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-rw-r--r--drivers/amba/bus.c88
-rw-r--r--drivers/gpio/pl061.c4
-rw-r--r--drivers/leds/Kconfig9
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/leds-ns2.c338
-rw-r--r--drivers/media/video/Kconfig13
-rw-r--r--drivers/media/video/Makefile1
-rw-r--r--drivers/media/video/mx2_camera.c1513
-rw-r--r--drivers/misc/Kconfig10
-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/arm-charlcd.c396
-rw-r--r--drivers/mmc/host/mmci.c148
-rw-r--r--drivers/mmc/host/mmci.h39
-rw-r--r--drivers/mmc/host/mxcmmc.c48
-rw-r--r--drivers/mtd/nand/mxc_nand.c33
-rw-r--r--drivers/net/phy/marvell.c38
-rw-r--r--drivers/parisc/led.c6
-rw-r--r--drivers/rtc/rtc-pl031.c2
-rw-r--r--drivers/serial/amba-pl010.c2
-rw-r--r--drivers/serial/amba-pl011.c90
-rw-r--r--drivers/usb/gadget/at91_udc.c205
-rw-r--r--drivers/usb/gadget/at91_udc.h3
-rw-r--r--drivers/usb/gadget/fsl_mxc_udc.c2
-rw-r--r--drivers/usb/host/ehci-mxc.c2
-rw-r--r--drivers/video/imxfb.c72
-rw-r--r--drivers/video/omap2/vram.c33
26 files changed, 2821 insertions, 276 deletions
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index f60b2b6a0931..d31590e7011b 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -122,6 +122,31 @@ static int __init amba_init(void)
122 122
123postcore_initcall(amba_init); 123postcore_initcall(amba_init);
124 124
125static int amba_get_enable_pclk(struct amba_device *pcdev)
126{
127 struct clk *pclk = clk_get(&pcdev->dev, "apb_pclk");
128 int ret;
129
130 pcdev->pclk = pclk;
131
132 if (IS_ERR(pclk))
133 return PTR_ERR(pclk);
134
135 ret = clk_enable(pclk);
136 if (ret)
137 clk_put(pclk);
138
139 return ret;
140}
141
142static void amba_put_disable_pclk(struct amba_device *pcdev)
143{
144 struct clk *pclk = pcdev->pclk;
145
146 clk_disable(pclk);
147 clk_put(pclk);
148}
149
125/* 150/*
126 * These are the device model conversion veneers; they convert the 151 * These are the device model conversion veneers; they convert the
127 * device model structures to our more specific structures. 152 * device model structures to our more specific structures.
@@ -130,17 +155,33 @@ static int amba_probe(struct device *dev)
130{ 155{
131 struct amba_device *pcdev = to_amba_device(dev); 156 struct amba_device *pcdev = to_amba_device(dev);
132 struct amba_driver *pcdrv = to_amba_driver(dev->driver); 157 struct amba_driver *pcdrv = to_amba_driver(dev->driver);
133 struct amba_id *id; 158 struct amba_id *id = amba_lookup(pcdrv->id_table, pcdev);
159 int ret;
134 160
135 id = amba_lookup(pcdrv->id_table, pcdev); 161 do {
162 ret = amba_get_enable_pclk(pcdev);
163 if (ret)
164 break;
165
166 ret = pcdrv->probe(pcdev, id);
167 if (ret == 0)
168 break;
136 169
137 return pcdrv->probe(pcdev, id); 170 amba_put_disable_pclk(pcdev);
171 } while (0);
172
173 return ret;
138} 174}
139 175
140static int amba_remove(struct device *dev) 176static int amba_remove(struct device *dev)
141{ 177{
178 struct amba_device *pcdev = to_amba_device(dev);
142 struct amba_driver *drv = to_amba_driver(dev->driver); 179 struct amba_driver *drv = to_amba_driver(dev->driver);
143 return drv->remove(to_amba_device(dev)); 180 int ret = drv->remove(pcdev);
181
182 amba_put_disable_pclk(pcdev);
183
184 return ret;
144} 185}
145 186
146static void amba_shutdown(struct device *dev) 187static void amba_shutdown(struct device *dev)
@@ -203,7 +244,6 @@ static void amba_device_release(struct device *dev)
203 */ 244 */
204int amba_device_register(struct amba_device *dev, struct resource *parent) 245int amba_device_register(struct amba_device *dev, struct resource *parent)
205{ 246{
206 u32 pid, cid;
207 u32 size; 247 u32 size;
208 void __iomem *tmp; 248 void __iomem *tmp;
209 int i, ret; 249 int i, ret;
@@ -241,25 +281,35 @@ int amba_device_register(struct amba_device *dev, struct resource *parent)
241 goto err_release; 281 goto err_release;
242 } 282 }
243 283
244 /* 284 ret = amba_get_enable_pclk(dev);
245 * Read pid and cid based on size of resource 285 if (ret == 0) {
246 * they are located at end of region 286 u32 pid, cid;
247 */
248 for (pid = 0, i = 0; i < 4; i++)
249 pid |= (readl(tmp + size - 0x20 + 4 * i) & 255) << (i * 8);
250 for (cid = 0, i = 0; i < 4; i++)
251 cid |= (readl(tmp + size - 0x10 + 4 * i) & 255) << (i * 8);
252 287
253 iounmap(tmp); 288 /*
289 * Read pid and cid based on size of resource
290 * they are located at end of region
291 */
292 for (pid = 0, i = 0; i < 4; i++)
293 pid |= (readl(tmp + size - 0x20 + 4 * i) & 255) <<
294 (i * 8);
295 for (cid = 0, i = 0; i < 4; i++)
296 cid |= (readl(tmp + size - 0x10 + 4 * i) & 255) <<
297 (i * 8);
254 298
255 if (cid == 0xb105f00d) 299 amba_put_disable_pclk(dev);
256 dev->periphid = pid;
257 300
258 if (!dev->periphid) { 301 if (cid == 0xb105f00d)
259 ret = -ENODEV; 302 dev->periphid = pid;
260 goto err_release; 303
304 if (!dev->periphid)
305 ret = -ENODEV;
261 } 306 }
262 307
308 iounmap(tmp);
309
310 if (ret)
311 goto err_release;
312
263 ret = device_add(&dev->dev); 313 ret = device_add(&dev->dev);
264 if (ret) 314 if (ret)
265 goto err_release; 315 goto err_release;
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index ee568c8fcbd0..5005990f751f 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -232,7 +232,7 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc)
232 desc->chip->unmask(irq); 232 desc->chip->unmask(irq);
233} 233}
234 234
235static int __init pl061_probe(struct amba_device *dev, struct amba_id *id) 235static int pl061_probe(struct amba_device *dev, struct amba_id *id)
236{ 236{
237 struct pl061_platform_data *pdata; 237 struct pl061_platform_data *pdata;
238 struct pl061_gpio *chip; 238 struct pl061_gpio *chip;
@@ -333,7 +333,7 @@ free_mem:
333 return ret; 333 return ret;
334} 334}
335 335
336static struct amba_id pl061_ids[] __initdata = { 336static struct amba_id pl061_ids[] = {
337 { 337 {
338 .id = 0x00041061, 338 .id = 0x00041061,
339 .mask = 0x000fffff, 339 .mask = 0x000fffff,
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 81bf25e67ce1..e4112622e5a2 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -302,6 +302,15 @@ config LEDS_MC13783
302 This option enable support for on-chip LED drivers found 302 This option enable support for on-chip LED drivers found
303 on Freescale Semiconductor MC13783 PMIC. 303 on Freescale Semiconductor MC13783 PMIC.
304 304
305config LEDS_NS2
306 tristate "LED support for Network Space v2 GPIO LEDs"
307 depends on MACH_NETSPACE_V2 || MACH_INETSPACE_V2 || MACH_NETSPACE_MAX_V2
308 default y
309 help
310 This option enable support for the dual-GPIO LED found on the
311 Network Space v2 board (and parents). This include Internet Space v2,
312 Network Space (Max) v2 and d2 Network v2 boards.
313
305config LEDS_TRIGGERS 314config LEDS_TRIGGERS
306 bool "LED Trigger support" 315 bool "LED Trigger support"
307 help 316 help
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 2493de499374..7d6b95831f8e 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_LEDS_LT3593) += leds-lt3593.o
37obj-$(CONFIG_LEDS_ADP5520) += leds-adp5520.o 37obj-$(CONFIG_LEDS_ADP5520) += leds-adp5520.o
38obj-$(CONFIG_LEDS_DELL_NETBOOKS) += dell-led.o 38obj-$(CONFIG_LEDS_DELL_NETBOOKS) += dell-led.o
39obj-$(CONFIG_LEDS_MC13783) += leds-mc13783.o 39obj-$(CONFIG_LEDS_MC13783) += leds-mc13783.o
40obj-$(CONFIG_LEDS_NS2) += leds-ns2.o
40 41
41# LED SPI Drivers 42# LED SPI Drivers
42obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o 43obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c
new file mode 100644
index 000000000000..74dce4ba0262
--- /dev/null
+++ b/drivers/leds/leds-ns2.c
@@ -0,0 +1,338 @@
1/*
2 * leds-ns2.c - Driver for the Network Space v2 (and parents) dual-GPIO LED
3 *
4 * Copyright (C) 2010 LaCie
5 *
6 * Author: Simon Guinot <sguinot@lacie.com>
7 *
8 * Based on leds-gpio.c by Raphael Assenat <raph@8d.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25#include <linux/kernel.h>
26#include <linux/init.h>
27#include <linux/platform_device.h>
28#include <linux/slab.h>
29#include <linux/gpio.h>
30#include <linux/leds.h>
31#include <mach/leds-ns2.h>
32
33/*
34 * The Network Space v2 dual-GPIO LED is wired to a CPLD and can blink in
35 * relation with the SATA activity. This capability is exposed through the
36 * "sata" sysfs attribute.
37 *
38 * The following array detail the different LED registers and the combination
39 * of their possible values:
40 *
41 * cmd_led | slow_led | /SATA active | LED state
42 * | | |
43 * 1 | 0 | x | off
44 * - | 1 | x | on
45 * 0 | 0 | 1 | on
46 * 0 | 0 | 0 | blink (rate 300ms)
47 */
48
49enum ns2_led_modes {
50 NS_V2_LED_OFF,
51 NS_V2_LED_ON,
52 NS_V2_LED_SATA,
53};
54
55struct ns2_led_mode_value {
56 enum ns2_led_modes mode;
57 int cmd_level;
58 int slow_level;
59};
60
61static struct ns2_led_mode_value ns2_led_modval[] = {
62 { NS_V2_LED_OFF , 1, 0 },
63 { NS_V2_LED_ON , 0, 1 },
64 { NS_V2_LED_ON , 1, 1 },
65 { NS_V2_LED_SATA, 0, 0 },
66};
67
68struct ns2_led_data {
69 struct led_classdev cdev;
70 unsigned cmd;
71 unsigned slow;
72 unsigned char sata; /* True when SATA mode active. */
73 rwlock_t rw_lock; /* Lock GPIOs. */
74};
75
76static int ns2_led_get_mode(struct ns2_led_data *led_dat,
77 enum ns2_led_modes *mode)
78{
79 int i;
80 int ret = -EINVAL;
81 int cmd_level;
82 int slow_level;
83
84 read_lock(&led_dat->rw_lock);
85
86 cmd_level = gpio_get_value(led_dat->cmd);
87 slow_level = gpio_get_value(led_dat->slow);
88
89 for (i = 0; i < ARRAY_SIZE(ns2_led_modval); i++) {
90 if (cmd_level == ns2_led_modval[i].cmd_level &&
91 slow_level == ns2_led_modval[i].slow_level) {
92 *mode = ns2_led_modval[i].mode;
93 ret = 0;
94 break;
95 }
96 }
97
98 read_unlock(&led_dat->rw_lock);
99
100 return ret;
101}
102
103static void ns2_led_set_mode(struct ns2_led_data *led_dat,
104 enum ns2_led_modes mode)
105{
106 int i;
107
108 write_lock(&led_dat->rw_lock);
109
110 for (i = 0; i < ARRAY_SIZE(ns2_led_modval); i++) {
111 if (mode == ns2_led_modval[i].mode) {
112 gpio_set_value(led_dat->cmd,
113 ns2_led_modval[i].cmd_level);
114 gpio_set_value(led_dat->slow,
115 ns2_led_modval[i].slow_level);
116 }
117 }
118
119 write_unlock(&led_dat->rw_lock);
120}
121
122static void ns2_led_set(struct led_classdev *led_cdev,
123 enum led_brightness value)
124{
125 struct ns2_led_data *led_dat =
126 container_of(led_cdev, struct ns2_led_data, cdev);
127 enum ns2_led_modes mode;
128
129 if (value == LED_OFF)
130 mode = NS_V2_LED_OFF;
131 else if (led_dat->sata)
132 mode = NS_V2_LED_SATA;
133 else
134 mode = NS_V2_LED_ON;
135
136 ns2_led_set_mode(led_dat, mode);
137}
138
139static ssize_t ns2_led_sata_store(struct device *dev,
140 struct device_attribute *attr,
141 const char *buff, size_t count)
142{
143 int ret;
144 unsigned long enable;
145 enum ns2_led_modes mode;
146 struct ns2_led_data *led_dat = dev_get_drvdata(dev);
147
148 ret = strict_strtoul(buff, 10, &enable);
149 if (ret < 0)
150 return ret;
151
152 enable = !!enable;
153
154 if (led_dat->sata == enable)
155 return count;
156
157 ret = ns2_led_get_mode(led_dat, &mode);
158 if (ret < 0)
159 return ret;
160
161 if (enable && mode == NS_V2_LED_ON)
162 ns2_led_set_mode(led_dat, NS_V2_LED_SATA);
163 if (!enable && mode == NS_V2_LED_SATA)
164 ns2_led_set_mode(led_dat, NS_V2_LED_ON);
165
166 led_dat->sata = enable;
167
168 return count;
169}
170
171static ssize_t ns2_led_sata_show(struct device *dev,
172 struct device_attribute *attr, char *buf)
173{
174 struct ns2_led_data *led_dat = dev_get_drvdata(dev);
175
176 return sprintf(buf, "%d\n", led_dat->sata);
177}
178
179static DEVICE_ATTR(sata, 0644, ns2_led_sata_show, ns2_led_sata_store);
180
181static int __devinit
182create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat,
183 const struct ns2_led *template)
184{
185 int ret;
186 enum ns2_led_modes mode;
187
188 ret = gpio_request(template->cmd, template->name);
189 if (ret == 0) {
190 ret = gpio_direction_output(template->cmd,
191 gpio_get_value(template->cmd));
192 if (ret)
193 gpio_free(template->cmd);
194 }
195 if (ret) {
196 dev_err(&pdev->dev, "%s: failed to setup command GPIO\n",
197 template->name);
198 }
199
200 ret = gpio_request(template->slow, template->name);
201 if (ret == 0) {
202 ret = gpio_direction_output(template->slow,
203 gpio_get_value(template->slow));
204 if (ret)
205 gpio_free(template->slow);
206 }
207 if (ret) {
208 dev_err(&pdev->dev, "%s: failed to setup slow GPIO\n",
209 template->name);
210 goto err_free_cmd;
211 }
212
213 rwlock_init(&led_dat->rw_lock);
214
215 led_dat->cdev.name = template->name;
216 led_dat->cdev.default_trigger = template->default_trigger;
217 led_dat->cdev.blink_set = NULL;
218 led_dat->cdev.brightness_set = ns2_led_set;
219 led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
220 led_dat->cmd = template->cmd;
221 led_dat->slow = template->slow;
222
223 ret = ns2_led_get_mode(led_dat, &mode);
224 if (ret < 0)
225 goto err_free_slow;
226
227 /* Set LED initial state. */
228 led_dat->sata = (mode == NS_V2_LED_SATA) ? 1 : 0;
229 led_dat->cdev.brightness =
230 (mode == NS_V2_LED_OFF) ? LED_OFF : LED_FULL;
231
232 ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
233 if (ret < 0)
234 goto err_free_slow;
235
236 dev_set_drvdata(led_dat->cdev.dev, led_dat);
237 ret = device_create_file(led_dat->cdev.dev, &dev_attr_sata);
238 if (ret < 0)
239 goto err_free_cdev;
240
241 return 0;
242
243err_free_cdev:
244 led_classdev_unregister(&led_dat->cdev);
245err_free_slow:
246 gpio_free(led_dat->slow);
247err_free_cmd:
248 gpio_free(led_dat->cmd);
249
250 return ret;
251}
252
253static void __devexit delete_ns2_led(struct ns2_led_data *led_dat)
254{
255 device_remove_file(led_dat->cdev.dev, &dev_attr_sata);
256 led_classdev_unregister(&led_dat->cdev);
257 gpio_free(led_dat->cmd);
258 gpio_free(led_dat->slow);
259}
260
261static int __devinit ns2_led_probe(struct platform_device *pdev)
262{
263 struct ns2_led_platform_data *pdata = pdev->dev.platform_data;
264 struct ns2_led_data *leds_data;
265 int i;
266 int ret;
267
268 if (!pdata)
269 return -EINVAL;
270
271 leds_data = kzalloc(sizeof(struct ns2_led_data) *
272 pdata->num_leds, GFP_KERNEL);
273 if (!leds_data)
274 return -ENOMEM;
275
276 for (i = 0; i < pdata->num_leds; i++) {
277 ret = create_ns2_led(pdev, &leds_data[i], &pdata->leds[i]);
278 if (ret < 0)
279 goto err;
280
281 }
282
283 platform_set_drvdata(pdev, leds_data);
284
285 return 0;
286
287err:
288 for (i = i - 1; i >= 0; i--)
289 delete_ns2_led(&leds_data[i]);
290
291 kfree(leds_data);
292
293 return ret;
294}
295
296static int __devexit ns2_led_remove(struct platform_device *pdev)
297{
298 int i;
299 struct ns2_led_platform_data *pdata = pdev->dev.platform_data;
300 struct ns2_led_data *leds_data;
301
302 leds_data = platform_get_drvdata(pdev);
303
304 for (i = 0; i < pdata->num_leds; i++)
305 delete_ns2_led(&leds_data[i]);
306
307 kfree(leds_data);
308 platform_set_drvdata(pdev, NULL);
309
310 return 0;
311}
312
313static struct platform_driver ns2_led_driver = {
314 .probe = ns2_led_probe,
315 .remove = __devexit_p(ns2_led_remove),
316 .driver = {
317 .name = "leds-ns2",
318 .owner = THIS_MODULE,
319 },
320};
321MODULE_ALIAS("platform:leds-ns2");
322
323static int __init ns2_led_init(void)
324{
325 return platform_driver_register(&ns2_led_driver);
326}
327
328static void __exit ns2_led_exit(void)
329{
330 platform_driver_unregister(&ns2_led_driver);
331}
332
333module_init(ns2_led_init);
334module_exit(ns2_led_exit);
335
336MODULE_AUTHOR("Simon Guinot <sguinot@lacie.com>");
337MODULE_DESCRIPTION("Network Space v2 LED driver");
338MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index bdbc9d305419..27e2acce3c3a 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -969,6 +969,19 @@ config VIDEO_OMAP2
969 ---help--- 969 ---help---
970 This is a v4l2 driver for the TI OMAP2 camera capture interface 970 This is a v4l2 driver for the TI OMAP2 camera capture interface
971 971
972config VIDEO_MX2_HOSTSUPPORT
973 bool
974
975config VIDEO_MX2
976 tristate "i.MX27/i.MX25 Camera Sensor Interface driver"
977 depends on VIDEO_DEV && SOC_CAMERA && (MACH_MX27 || ARCH_MX25)
978 select VIDEOBUF_DMA_CONTIG
979 select VIDEO_MX2_HOSTSUPPORT
980 ---help---
981 This is a v4l2 driver for the i.MX27 and the i.MX25 Camera Sensor
982 Interface
983
984
972# 985#
973# USB Multimedia device configuration 986# USB Multimedia device configuration
974# 987#
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index cc93859d3164..b08bd2b65cd0 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -162,6 +162,7 @@ obj-$(CONFIG_SOC_CAMERA) += soc_camera.o soc_mediabus.o
162obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o 162obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o
163# soc-camera host drivers have to be linked after camera drivers 163# soc-camera host drivers have to be linked after camera drivers
164obj-$(CONFIG_VIDEO_MX1) += mx1_camera.o 164obj-$(CONFIG_VIDEO_MX1) += mx1_camera.o
165obj-$(CONFIG_VIDEO_MX2) += mx2_camera.o
165obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o 166obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o
166obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o 167obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o
167obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o 168obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o
diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c
new file mode 100644
index 000000000000..026bef0ba403
--- /dev/null
+++ b/drivers/media/video/mx2_camera.c
@@ -0,0 +1,1513 @@
1/*
2 * V4L2 Driver for i.MX27/i.MX25 camera host
3 *
4 * Copyright (C) 2008, Sascha Hauer, Pengutronix
5 * Copyright (C) 2010, Baruch Siach, Orex Computed Radiography
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/io.h>
16#include <linux/delay.h>
17#include <linux/slab.h>
18#include <linux/dma-mapping.h>
19#include <linux/errno.h>
20#include <linux/fs.h>
21#include <linux/interrupt.h>
22#include <linux/kernel.h>
23#include <linux/mm.h>
24#include <linux/moduleparam.h>
25#include <linux/time.h>
26#include <linux/version.h>
27#include <linux/device.h>
28#include <linux/platform_device.h>
29#include <linux/mutex.h>
30#include <linux/clk.h>
31
32#include <media/v4l2-common.h>
33#include <media/v4l2-dev.h>
34#include <media/videobuf-dma-contig.h>
35#include <media/soc_camera.h>
36#include <media/soc_mediabus.h>
37
38#include <linux/videodev2.h>
39
40#include <mach/mx2_cam.h>
41#ifdef CONFIG_MACH_MX27
42#include <mach/dma-mx1-mx2.h>
43#endif
44#include <mach/hardware.h>
45
46#include <asm/dma.h>
47
48#define MX2_CAM_DRV_NAME "mx2-camera"
49#define MX2_CAM_VERSION_CODE KERNEL_VERSION(0, 0, 5)
50#define MX2_CAM_DRIVER_DESCRIPTION "i.MX2x_Camera"
51
52/* reset values */
53#define CSICR1_RESET_VAL 0x40000800
54#define CSICR2_RESET_VAL 0x0
55#define CSICR3_RESET_VAL 0x0
56
57/* csi control reg 1 */
58#define CSICR1_SWAP16_EN (1 << 31)
59#define CSICR1_EXT_VSYNC (1 << 30)
60#define CSICR1_EOF_INTEN (1 << 29)
61#define CSICR1_PRP_IF_EN (1 << 28)
62#define CSICR1_CCIR_MODE (1 << 27)
63#define CSICR1_COF_INTEN (1 << 26)
64#define CSICR1_SF_OR_INTEN (1 << 25)
65#define CSICR1_RF_OR_INTEN (1 << 24)
66#define CSICR1_STATFF_LEVEL (3 << 22)
67#define CSICR1_STATFF_INTEN (1 << 21)
68#define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19) /* MX27 */
69#define CSICR1_FB2_DMA_INTEN (1 << 20) /* MX25 */
70#define CSICR1_FB1_DMA_INTEN (1 << 19) /* MX25 */
71#define CSICR1_RXFF_INTEN (1 << 18)
72#define CSICR1_SOF_POL (1 << 17)
73#define CSICR1_SOF_INTEN (1 << 16)
74#define CSICR1_MCLKDIV(d) (((d) & 0xF) << 12)
75#define CSICR1_HSYNC_POL (1 << 11)
76#define CSICR1_CCIR_EN (1 << 10)
77#define CSICR1_MCLKEN (1 << 9)
78#define CSICR1_FCC (1 << 8)
79#define CSICR1_PACK_DIR (1 << 7)
80#define CSICR1_CLR_STATFIFO (1 << 6)
81#define CSICR1_CLR_RXFIFO (1 << 5)
82#define CSICR1_GCLK_MODE (1 << 4)
83#define CSICR1_INV_DATA (1 << 3)
84#define CSICR1_INV_PCLK (1 << 2)
85#define CSICR1_REDGE (1 << 1)
86
87#define SHIFT_STATFF_LEVEL 22
88#define SHIFT_RXFF_LEVEL 19
89#define SHIFT_MCLKDIV 12
90
91/* control reg 3 */
92#define CSICR3_FRMCNT (0xFFFF << 16)
93#define CSICR3_FRMCNT_RST (1 << 15)
94#define CSICR3_DMA_REFLASH_RFF (1 << 14)
95#define CSICR3_DMA_REFLASH_SFF (1 << 13)
96#define CSICR3_DMA_REQ_EN_RFF (1 << 12)
97#define CSICR3_DMA_REQ_EN_SFF (1 << 11)
98#define CSICR3_RXFF_LEVEL(l) (((l) & 7) << 4) /* MX25 */
99#define CSICR3_CSI_SUP (1 << 3)
100#define CSICR3_ZERO_PACK_EN (1 << 2)
101#define CSICR3_ECC_INT_EN (1 << 1)
102#define CSICR3_ECC_AUTO_EN (1 << 0)
103
104#define SHIFT_FRMCNT 16
105
106/* csi status reg */
107#define CSISR_SFF_OR_INT (1 << 25)
108#define CSISR_RFF_OR_INT (1 << 24)
109#define CSISR_STATFF_INT (1 << 21)
110#define CSISR_DMA_TSF_FB2_INT (1 << 20) /* MX25 */
111#define CSISR_DMA_TSF_FB1_INT (1 << 19) /* MX25 */
112#define CSISR_RXFF_INT (1 << 18)
113#define CSISR_EOF_INT (1 << 17)
114#define CSISR_SOF_INT (1 << 16)
115#define CSISR_F2_INT (1 << 15)
116#define CSISR_F1_INT (1 << 14)
117#define CSISR_COF_INT (1 << 13)
118#define CSISR_ECC_INT (1 << 1)
119#define CSISR_DRDY (1 << 0)
120
121#define CSICR1 0x00
122#define CSICR2 0x04
123#define CSISR (cpu_is_mx27() ? 0x08 : 0x18)
124#define CSISTATFIFO 0x0c
125#define CSIRFIFO 0x10
126#define CSIRXCNT 0x14
127#define CSICR3 (cpu_is_mx27() ? 0x1C : 0x08)
128#define CSIDMASA_STATFIFO 0x20
129#define CSIDMATA_STATFIFO 0x24
130#define CSIDMASA_FB1 0x28
131#define CSIDMASA_FB2 0x2c
132#define CSIFBUF_PARA 0x30
133#define CSIIMAG_PARA 0x34
134
135/* EMMA PrP */
136#define PRP_CNTL 0x00
137#define PRP_INTR_CNTL 0x04
138#define PRP_INTRSTATUS 0x08
139#define PRP_SOURCE_Y_PTR 0x0c
140#define PRP_SOURCE_CB_PTR 0x10
141#define PRP_SOURCE_CR_PTR 0x14
142#define PRP_DEST_RGB1_PTR 0x18
143#define PRP_DEST_RGB2_PTR 0x1c
144#define PRP_DEST_Y_PTR 0x20
145#define PRP_DEST_CB_PTR 0x24
146#define PRP_DEST_CR_PTR 0x28
147#define PRP_SRC_FRAME_SIZE 0x2c
148#define PRP_DEST_CH1_LINE_STRIDE 0x30
149#define PRP_SRC_PIXEL_FORMAT_CNTL 0x34
150#define PRP_CH1_PIXEL_FORMAT_CNTL 0x38
151#define PRP_CH1_OUT_IMAGE_SIZE 0x3c
152#define PRP_CH2_OUT_IMAGE_SIZE 0x40
153#define PRP_SRC_LINE_STRIDE 0x44
154#define PRP_CSC_COEF_012 0x48
155#define PRP_CSC_COEF_345 0x4c
156#define PRP_CSC_COEF_678 0x50
157#define PRP_CH1_RZ_HORI_COEF1 0x54
158#define PRP_CH1_RZ_HORI_COEF2 0x58
159#define PRP_CH1_RZ_HORI_VALID 0x5c
160#define PRP_CH1_RZ_VERT_COEF1 0x60
161#define PRP_CH1_RZ_VERT_COEF2 0x64
162#define PRP_CH1_RZ_VERT_VALID 0x68
163#define PRP_CH2_RZ_HORI_COEF1 0x6c
164#define PRP_CH2_RZ_HORI_COEF2 0x70
165#define PRP_CH2_RZ_HORI_VALID 0x74
166#define PRP_CH2_RZ_VERT_COEF1 0x78
167#define PRP_CH2_RZ_VERT_COEF2 0x7c
168#define PRP_CH2_RZ_VERT_VALID 0x80
169
170#define PRP_CNTL_CH1EN (1 << 0)
171#define PRP_CNTL_CH2EN (1 << 1)
172#define PRP_CNTL_CSIEN (1 << 2)
173#define PRP_CNTL_DATA_IN_YUV420 (0 << 3)
174#define PRP_CNTL_DATA_IN_YUV422 (1 << 3)
175#define PRP_CNTL_DATA_IN_RGB16 (2 << 3)
176#define PRP_CNTL_DATA_IN_RGB32 (3 << 3)
177#define PRP_CNTL_CH1_OUT_RGB8 (0 << 5)
178#define PRP_CNTL_CH1_OUT_RGB16 (1 << 5)
179#define PRP_CNTL_CH1_OUT_RGB32 (2 << 5)
180#define PRP_CNTL_CH1_OUT_YUV422 (3 << 5)
181#define PRP_CNTL_CH2_OUT_YUV420 (0 << 7)
182#define PRP_CNTL_CH2_OUT_YUV422 (1 << 7)
183#define PRP_CNTL_CH2_OUT_YUV444 (2 << 7)
184#define PRP_CNTL_CH1_LEN (1 << 9)
185#define PRP_CNTL_CH2_LEN (1 << 10)
186#define PRP_CNTL_SKIP_FRAME (1 << 11)
187#define PRP_CNTL_SWRST (1 << 12)
188#define PRP_CNTL_CLKEN (1 << 13)
189#define PRP_CNTL_WEN (1 << 14)
190#define PRP_CNTL_CH1BYP (1 << 15)
191#define PRP_CNTL_IN_TSKIP(x) ((x) << 16)
192#define PRP_CNTL_CH1_TSKIP(x) ((x) << 19)
193#define PRP_CNTL_CH2_TSKIP(x) ((x) << 22)
194#define PRP_CNTL_INPUT_FIFO_LEVEL(x) ((x) << 25)
195#define PRP_CNTL_RZ_FIFO_LEVEL(x) ((x) << 27)
196#define PRP_CNTL_CH2B1EN (1 << 29)
197#define PRP_CNTL_CH2B2EN (1 << 30)
198#define PRP_CNTL_CH2FEN (1 << 31)
199
200/* IRQ Enable and status register */
201#define PRP_INTR_RDERR (1 << 0)
202#define PRP_INTR_CH1WERR (1 << 1)
203#define PRP_INTR_CH2WERR (1 << 2)
204#define PRP_INTR_CH1FC (1 << 3)
205#define PRP_INTR_CH2FC (1 << 5)
206#define PRP_INTR_LBOVF (1 << 7)
207#define PRP_INTR_CH2OVF (1 << 8)
208
209#define mx27_camera_emma(pcdev) (cpu_is_mx27() && pcdev->use_emma)
210
211#define MAX_VIDEO_MEM 16
212
213struct mx2_camera_dev {
214 struct device *dev;
215 struct soc_camera_host soc_host;
216 struct soc_camera_device *icd;
217 struct clk *clk_csi, *clk_emma;
218
219 unsigned int irq_csi, irq_emma;
220 void __iomem *base_csi, *base_emma;
221 unsigned long base_dma;
222
223 struct mx2_camera_platform_data *pdata;
224 struct resource *res_csi, *res_emma;
225 unsigned long platform_flags;
226
227 struct list_head capture;
228 struct list_head active_bufs;
229
230 spinlock_t lock;
231
232 int dma;
233 struct mx2_buffer *active;
234 struct mx2_buffer *fb1_active;
235 struct mx2_buffer *fb2_active;
236
237 int use_emma;
238
239 u32 csicr1;
240
241 void *discard_buffer;
242 dma_addr_t discard_buffer_dma;
243 size_t discard_size;
244};
245
246/* buffer for one video frame */
247struct mx2_buffer {
248 /* common v4l buffer stuff -- must be first */
249 struct videobuf_buffer vb;
250
251 enum v4l2_mbus_pixelcode code;
252
253 int bufnum;
254};
255
256static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev)
257{
258 unsigned long flags;
259
260 clk_disable(pcdev->clk_csi);
261 writel(0, pcdev->base_csi + CSICR1);
262 if (mx27_camera_emma(pcdev)) {
263 writel(0, pcdev->base_emma + PRP_CNTL);
264 } else if (cpu_is_mx25()) {
265 spin_lock_irqsave(&pcdev->lock, flags);
266 pcdev->fb1_active = NULL;
267 pcdev->fb2_active = NULL;
268 writel(0, pcdev->base_csi + CSIDMASA_FB1);
269 writel(0, pcdev->base_csi + CSIDMASA_FB2);
270 spin_unlock_irqrestore(&pcdev->lock, flags);
271 }
272}
273
274/*
275 * The following two functions absolutely depend on the fact, that
276 * there can be only one camera on mx2 camera sensor interface
277 */
278static int mx2_camera_add_device(struct soc_camera_device *icd)
279{
280 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
281 struct mx2_camera_dev *pcdev = ici->priv;
282 int ret;
283 u32 csicr1;
284
285 if (pcdev->icd)
286 return -EBUSY;
287
288 ret = clk_enable(pcdev->clk_csi);
289 if (ret < 0)
290 return ret;
291
292 csicr1 = CSICR1_MCLKEN;
293
294 if (mx27_camera_emma(pcdev)) {
295 csicr1 |= CSICR1_PRP_IF_EN | CSICR1_FCC |
296 CSICR1_RXFF_LEVEL(0);
297 } else if (cpu_is_mx27())
298 csicr1 |= CSICR1_SOF_INTEN | CSICR1_RXFF_LEVEL(2);
299
300 pcdev->csicr1 = csicr1;
301 writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
302
303 pcdev->icd = icd;
304
305 dev_info(icd->dev.parent, "Camera driver attached to camera %d\n",
306 icd->devnum);
307
308 return 0;
309}
310
311static void mx2_camera_remove_device(struct soc_camera_device *icd)
312{
313 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
314 struct mx2_camera_dev *pcdev = ici->priv;
315
316 BUG_ON(icd != pcdev->icd);
317
318 dev_info(icd->dev.parent, "Camera driver detached from camera %d\n",
319 icd->devnum);
320
321 mx2_camera_deactivate(pcdev);
322
323 if (pcdev->discard_buffer) {
324 dma_free_coherent(ici->v4l2_dev.dev, pcdev->discard_size,
325 pcdev->discard_buffer,
326 pcdev->discard_buffer_dma);
327 pcdev->discard_buffer = NULL;
328 }
329
330 pcdev->icd = NULL;
331}
332
333#ifdef CONFIG_MACH_MX27
334static void mx27_camera_dma_enable(struct mx2_camera_dev *pcdev)
335{
336 u32 tmp;
337
338 imx_dma_enable(pcdev->dma);
339
340 tmp = readl(pcdev->base_csi + CSICR1);
341 tmp |= CSICR1_RF_OR_INTEN;
342 writel(tmp, pcdev->base_csi + CSICR1);
343}
344
345static irqreturn_t mx27_camera_irq(int irq_csi, void *data)
346{
347 struct mx2_camera_dev *pcdev = data;
348 u32 status = readl(pcdev->base_csi + CSISR);
349
350 if (status & CSISR_SOF_INT && pcdev->active) {
351 u32 tmp;
352
353 tmp = readl(pcdev->base_csi + CSICR1);
354 writel(tmp | CSICR1_CLR_RXFIFO, pcdev->base_csi + CSICR1);
355 mx27_camera_dma_enable(pcdev);
356 }
357
358 writel(CSISR_SOF_INT | CSISR_RFF_OR_INT, pcdev->base_csi + CSISR);
359
360 return IRQ_HANDLED;
361}
362#else
363static irqreturn_t mx27_camera_irq(int irq_csi, void *data)
364{
365 return IRQ_NONE;
366}
367#endif /* CONFIG_MACH_MX27 */
368
369static void mx25_camera_frame_done(struct mx2_camera_dev *pcdev, int fb,
370 int state)
371{
372 struct videobuf_buffer *vb;
373 struct mx2_buffer *buf;
374 struct mx2_buffer **fb_active = fb == 1 ? &pcdev->fb1_active :
375 &pcdev->fb2_active;
376 u32 fb_reg = fb == 1 ? CSIDMASA_FB1 : CSIDMASA_FB2;
377 unsigned long flags;
378
379 spin_lock_irqsave(&pcdev->lock, flags);
380
381 vb = &(*fb_active)->vb;
382 dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
383 vb, vb->baddr, vb->bsize);
384
385 vb->state = state;
386 do_gettimeofday(&vb->ts);
387 vb->field_count++;
388
389 wake_up(&vb->done);
390
391 if (list_empty(&pcdev->capture)) {
392 buf = NULL;
393 writel(0, pcdev->base_csi + fb_reg);
394 } else {
395 buf = list_entry(pcdev->capture.next, struct mx2_buffer,
396 vb.queue);
397 vb = &buf->vb;
398 list_del(&vb->queue);
399 vb->state = VIDEOBUF_ACTIVE;
400 writel(videobuf_to_dma_contig(vb), pcdev->base_csi + fb_reg);
401 }
402
403 *fb_active = buf;
404
405 spin_unlock_irqrestore(&pcdev->lock, flags);
406}
407
408static irqreturn_t mx25_camera_irq(int irq_csi, void *data)
409{
410 struct mx2_camera_dev *pcdev = data;
411 u32 status = readl(pcdev->base_csi + CSISR);
412
413 if (status & CSISR_DMA_TSF_FB1_INT)
414 mx25_camera_frame_done(pcdev, 1, VIDEOBUF_DONE);
415 else if (status & CSISR_DMA_TSF_FB2_INT)
416 mx25_camera_frame_done(pcdev, 2, VIDEOBUF_DONE);
417
418 /* FIXME: handle CSISR_RFF_OR_INT */
419
420 writel(status, pcdev->base_csi + CSISR);
421
422 return IRQ_HANDLED;
423}
424
425/*
426 * Videobuf operations
427 */
428static int mx2_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
429 unsigned int *size)
430{
431 struct soc_camera_device *icd = vq->priv_data;
432 int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
433 icd->current_fmt->host_fmt);
434
435 dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size);
436
437 if (bytes_per_line < 0)
438 return bytes_per_line;
439
440 *size = bytes_per_line * icd->user_height;
441
442 if (0 == *count)
443 *count = 32;
444 if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024)
445 *count = (MAX_VIDEO_MEM * 1024 * 1024) / *size;
446
447 return 0;
448}
449
450static void free_buffer(struct videobuf_queue *vq, struct mx2_buffer *buf)
451{
452 struct soc_camera_device *icd = vq->priv_data;
453 struct videobuf_buffer *vb = &buf->vb;
454
455 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
456 vb, vb->baddr, vb->bsize);
457
458 /*
459 * This waits until this buffer is out of danger, i.e., until it is no
460 * longer in STATE_QUEUED or STATE_ACTIVE
461 */
462 videobuf_waiton(vb, 0, 0);
463
464 videobuf_dma_contig_free(vq, vb);
465 dev_dbg(&icd->dev, "%s freed\n", __func__);
466
467 vb->state = VIDEOBUF_NEEDS_INIT;
468}
469
470static int mx2_videobuf_prepare(struct videobuf_queue *vq,
471 struct videobuf_buffer *vb, enum v4l2_field field)
472{
473 struct soc_camera_device *icd = vq->priv_data;
474 struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb);
475 int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
476 icd->current_fmt->host_fmt);
477 int ret = 0;
478
479 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
480 vb, vb->baddr, vb->bsize);
481
482 if (bytes_per_line < 0)
483 return bytes_per_line;
484
485#ifdef DEBUG
486 /*
487 * This can be useful if you want to see if we actually fill
488 * the buffer with something
489 */
490 memset((void *)vb->baddr, 0xaa, vb->bsize);
491#endif
492
493 if (buf->code != icd->current_fmt->code ||
494 vb->width != icd->user_width ||
495 vb->height != icd->user_height ||
496 vb->field != field) {
497 buf->code = icd->current_fmt->code;
498 vb->width = icd->user_width;
499 vb->height = icd->user_height;
500 vb->field = field;
501 vb->state = VIDEOBUF_NEEDS_INIT;
502 }
503
504 vb->size = bytes_per_line * vb->height;
505 if (vb->baddr && vb->bsize < vb->size) {
506 ret = -EINVAL;
507 goto out;
508 }
509
510 if (vb->state == VIDEOBUF_NEEDS_INIT) {
511 ret = videobuf_iolock(vq, vb, NULL);
512 if (ret)
513 goto fail;
514
515 vb->state = VIDEOBUF_PREPARED;
516 }
517
518 return 0;
519
520fail:
521 free_buffer(vq, buf);
522out:
523 return ret;
524}
525
526static void mx2_videobuf_queue(struct videobuf_queue *vq,
527 struct videobuf_buffer *vb)
528{
529 struct soc_camera_device *icd = vq->priv_data;
530 struct soc_camera_host *ici =
531 to_soc_camera_host(icd->dev.parent);
532 struct mx2_camera_dev *pcdev = ici->priv;
533 struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb);
534 unsigned long flags;
535
536 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
537 vb, vb->baddr, vb->bsize);
538
539 spin_lock_irqsave(&pcdev->lock, flags);
540
541 vb->state = VIDEOBUF_QUEUED;
542 list_add_tail(&vb->queue, &pcdev->capture);
543
544 if (mx27_camera_emma(pcdev)) {
545 goto out;
546#ifdef CONFIG_MACH_MX27
547 } else if (cpu_is_mx27()) {
548 int ret;
549
550 if (pcdev->active == NULL) {
551 ret = imx_dma_setup_single(pcdev->dma,
552 videobuf_to_dma_contig(vb), vb->size,
553 (u32)pcdev->base_dma + 0x10,
554 DMA_MODE_READ);
555 if (ret) {
556 vb->state = VIDEOBUF_ERROR;
557 wake_up(&vb->done);
558 goto out;
559 }
560
561 vb->state = VIDEOBUF_ACTIVE;
562 pcdev->active = buf;
563 }
564#endif
565 } else { /* cpu_is_mx25() */
566 u32 csicr3, dma_inten = 0;
567
568 if (pcdev->fb1_active == NULL) {
569 writel(videobuf_to_dma_contig(vb),
570 pcdev->base_csi + CSIDMASA_FB1);
571 pcdev->fb1_active = buf;
572 dma_inten = CSICR1_FB1_DMA_INTEN;
573 } else if (pcdev->fb2_active == NULL) {
574 writel(videobuf_to_dma_contig(vb),
575 pcdev->base_csi + CSIDMASA_FB2);
576 pcdev->fb2_active = buf;
577 dma_inten = CSICR1_FB2_DMA_INTEN;
578 }
579
580 if (dma_inten) {
581 list_del(&vb->queue);
582 vb->state = VIDEOBUF_ACTIVE;
583
584 csicr3 = readl(pcdev->base_csi + CSICR3);
585
586 /* Reflash DMA */
587 writel(csicr3 | CSICR3_DMA_REFLASH_RFF,
588 pcdev->base_csi + CSICR3);
589
590 /* clear & enable interrupts */
591 writel(dma_inten, pcdev->base_csi + CSISR);
592 pcdev->csicr1 |= dma_inten;
593 writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
594
595 /* enable DMA */
596 csicr3 |= CSICR3_DMA_REQ_EN_RFF | CSICR3_RXFF_LEVEL(1);
597 writel(csicr3, pcdev->base_csi + CSICR3);
598 }
599 }
600
601out:
602 spin_unlock_irqrestore(&pcdev->lock, flags);
603}
604
605static void mx2_videobuf_release(struct videobuf_queue *vq,
606 struct videobuf_buffer *vb)
607{
608 struct soc_camera_device *icd = vq->priv_data;
609 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
610 struct mx2_camera_dev *pcdev = ici->priv;
611 struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb);
612 unsigned long flags;
613
614#ifdef DEBUG
615 dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
616 vb, vb->baddr, vb->bsize);
617
618 switch (vb->state) {
619 case VIDEOBUF_ACTIVE:
620 dev_info(&icd->dev, "%s (active)\n", __func__);
621 break;
622 case VIDEOBUF_QUEUED:
623 dev_info(&icd->dev, "%s (queued)\n", __func__);
624 break;
625 case VIDEOBUF_PREPARED:
626 dev_info(&icd->dev, "%s (prepared)\n", __func__);
627 break;
628 default:
629 dev_info(&icd->dev, "%s (unknown) %d\n", __func__,
630 vb->state);
631 break;
632 }
633#endif
634
635 /*
636 * Terminate only queued but inactive buffers. Active buffers are
637 * released when they become inactive after videobuf_waiton().
638 *
639 * FIXME: implement forced termination of active buffers, so that the
640 * user won't get stuck in an uninterruptible state. This requires a
641 * specific handling for each of the three DMA types that this driver
642 * supports.
643 */
644 spin_lock_irqsave(&pcdev->lock, flags);
645 if (vb->state == VIDEOBUF_QUEUED) {
646 list_del(&vb->queue);
647 vb->state = VIDEOBUF_ERROR;
648 }
649 spin_unlock_irqrestore(&pcdev->lock, flags);
650
651 free_buffer(vq, buf);
652}
653
654static struct videobuf_queue_ops mx2_videobuf_ops = {
655 .buf_setup = mx2_videobuf_setup,
656 .buf_prepare = mx2_videobuf_prepare,
657 .buf_queue = mx2_videobuf_queue,
658 .buf_release = mx2_videobuf_release,
659};
660
661static void mx2_camera_init_videobuf(struct videobuf_queue *q,
662 struct soc_camera_device *icd)
663{
664 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
665 struct mx2_camera_dev *pcdev = ici->priv;
666
667 videobuf_queue_dma_contig_init(q, &mx2_videobuf_ops, pcdev->dev,
668 &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
669 V4L2_FIELD_NONE, sizeof(struct mx2_buffer), icd);
670}
671
672#define MX2_BUS_FLAGS (SOCAM_DATAWIDTH_8 | \
673 SOCAM_MASTER | \
674 SOCAM_VSYNC_ACTIVE_HIGH | \
675 SOCAM_VSYNC_ACTIVE_LOW | \
676 SOCAM_HSYNC_ACTIVE_HIGH | \
677 SOCAM_HSYNC_ACTIVE_LOW | \
678 SOCAM_PCLK_SAMPLE_RISING | \
679 SOCAM_PCLK_SAMPLE_FALLING | \
680 SOCAM_DATA_ACTIVE_HIGH | \
681 SOCAM_DATA_ACTIVE_LOW)
682
683static int mx27_camera_emma_prp_reset(struct mx2_camera_dev *pcdev)
684{
685 u32 cntl;
686 int count = 0;
687
688 cntl = readl(pcdev->base_emma + PRP_CNTL);
689 writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL);
690 while (count++ < 100) {
691 if (!(readl(pcdev->base_emma + PRP_CNTL) & PRP_CNTL_SWRST))
692 return 0;
693 barrier();
694 udelay(1);
695 }
696
697 return -ETIMEDOUT;
698}
699
700static void mx27_camera_emma_buf_init(struct soc_camera_device *icd,
701 int bytesperline)
702{
703 struct soc_camera_host *ici =
704 to_soc_camera_host(icd->dev.parent);
705 struct mx2_camera_dev *pcdev = ici->priv;
706
707 writel(pcdev->discard_buffer_dma,
708 pcdev->base_emma + PRP_DEST_RGB1_PTR);
709 writel(pcdev->discard_buffer_dma,
710 pcdev->base_emma + PRP_DEST_RGB2_PTR);
711
712 /*
713 * We only use the EMMA engine to get rid of the broken
714 * DMA Engine. No color space consversion at the moment.
715 * We adjust incoming and outgoing pixelformat to rgb16
716 * and adjust the bytesperline accordingly.
717 */
718 writel(PRP_CNTL_CH1EN |
719 PRP_CNTL_CSIEN |
720 PRP_CNTL_DATA_IN_RGB16 |
721 PRP_CNTL_CH1_OUT_RGB16 |
722 PRP_CNTL_CH1_LEN |
723 PRP_CNTL_CH1BYP |
724 PRP_CNTL_CH1_TSKIP(0) |
725 PRP_CNTL_IN_TSKIP(0),
726 pcdev->base_emma + PRP_CNTL);
727
728 writel(((bytesperline >> 1) << 16) | icd->user_height,
729 pcdev->base_emma + PRP_SRC_FRAME_SIZE);
730 writel(((bytesperline >> 1) << 16) | icd->user_height,
731 pcdev->base_emma + PRP_CH1_OUT_IMAGE_SIZE);
732 writel(bytesperline,
733 pcdev->base_emma + PRP_DEST_CH1_LINE_STRIDE);
734 writel(0x2ca00565, /* RGB565 */
735 pcdev->base_emma + PRP_SRC_PIXEL_FORMAT_CNTL);
736 writel(0x2ca00565, /* RGB565 */
737 pcdev->base_emma + PRP_CH1_PIXEL_FORMAT_CNTL);
738
739 /* Enable interrupts */
740 writel(PRP_INTR_RDERR |
741 PRP_INTR_CH1WERR |
742 PRP_INTR_CH2WERR |
743 PRP_INTR_CH1FC |
744 PRP_INTR_CH2FC |
745 PRP_INTR_LBOVF |
746 PRP_INTR_CH2OVF,
747 pcdev->base_emma + PRP_INTR_CNTL);
748}
749
750static int mx2_camera_set_bus_param(struct soc_camera_device *icd,
751 __u32 pixfmt)
752{
753 struct soc_camera_host *ici =
754 to_soc_camera_host(icd->dev.parent);
755 struct mx2_camera_dev *pcdev = ici->priv;
756 unsigned long camera_flags, common_flags;
757 int ret = 0;
758 int bytesperline;
759 u32 csicr1 = pcdev->csicr1;
760
761 camera_flags = icd->ops->query_bus_param(icd);
762
763 common_flags = soc_camera_bus_param_compatible(camera_flags,
764 MX2_BUS_FLAGS);
765 if (!common_flags)
766 return -EINVAL;
767
768 if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) &&
769 (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) {
770 if (pcdev->platform_flags & MX2_CAMERA_HSYNC_HIGH)
771 common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW;
772 else
773 common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH;
774 }
775
776 if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) &&
777 (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) {
778 if (pcdev->platform_flags & MX2_CAMERA_PCLK_SAMPLE_RISING)
779 common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING;
780 else
781 common_flags &= ~SOCAM_PCLK_SAMPLE_RISING;
782 }
783
784 ret = icd->ops->set_bus_param(icd, common_flags);
785 if (ret < 0)
786 return ret;
787
788 if (common_flags & SOCAM_PCLK_SAMPLE_FALLING)
789 csicr1 |= CSICR1_INV_PCLK;
790 if (common_flags & SOCAM_VSYNC_ACTIVE_HIGH)
791 csicr1 |= CSICR1_SOF_POL;
792 if (common_flags & SOCAM_HSYNC_ACTIVE_HIGH)
793 csicr1 |= CSICR1_HSYNC_POL;
794 if (pcdev->platform_flags & MX2_CAMERA_SWAP16)
795 csicr1 |= CSICR1_SWAP16_EN;
796 if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC)
797 csicr1 |= CSICR1_EXT_VSYNC;
798 if (pcdev->platform_flags & MX2_CAMERA_CCIR)
799 csicr1 |= CSICR1_CCIR_EN;
800 if (pcdev->platform_flags & MX2_CAMERA_CCIR_INTERLACE)
801 csicr1 |= CSICR1_CCIR_MODE;
802 if (pcdev->platform_flags & MX2_CAMERA_GATED_CLOCK)
803 csicr1 |= CSICR1_GCLK_MODE;
804 if (pcdev->platform_flags & MX2_CAMERA_INV_DATA)
805 csicr1 |= CSICR1_INV_DATA;
806 if (pcdev->platform_flags & MX2_CAMERA_PACK_DIR_MSB)
807 csicr1 |= CSICR1_PACK_DIR;
808
809 pcdev->csicr1 = csicr1;
810
811 bytesperline = soc_mbus_bytes_per_line(icd->user_width,
812 icd->current_fmt->host_fmt);
813 if (bytesperline < 0)
814 return bytesperline;
815
816 if (mx27_camera_emma(pcdev)) {
817 ret = mx27_camera_emma_prp_reset(pcdev);
818 if (ret)
819 return ret;
820
821 if (pcdev->discard_buffer)
822 dma_free_coherent(ici->v4l2_dev.dev,
823 pcdev->discard_size, pcdev->discard_buffer,
824 pcdev->discard_buffer_dma);
825
826 /*
827 * I didn't manage to properly enable/disable the prp
828 * on a per frame basis during running transfers,
829 * thus we allocate a buffer here and use it to
830 * discard frames when no buffer is available.
831 * Feel free to work on this ;)
832 */
833 pcdev->discard_size = icd->user_height * bytesperline;
834 pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev,
835 pcdev->discard_size, &pcdev->discard_buffer_dma,
836 GFP_KERNEL);
837 if (!pcdev->discard_buffer)
838 return -ENOMEM;
839
840 mx27_camera_emma_buf_init(icd, bytesperline);
841 } else if (cpu_is_mx25()) {
842 writel((bytesperline * icd->user_height) >> 2,
843 pcdev->base_csi + CSIRXCNT);
844 writel((bytesperline << 16) | icd->user_height,
845 pcdev->base_csi + CSIIMAG_PARA);
846 }
847
848 writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
849
850 return 0;
851}
852
853static int mx2_camera_set_crop(struct soc_camera_device *icd,
854 struct v4l2_crop *a)
855{
856 struct v4l2_rect *rect = &a->c;
857 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
858 struct v4l2_mbus_framefmt mf;
859 int ret;
860
861 soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096);
862 soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096);
863
864 ret = v4l2_subdev_call(sd, video, s_crop, a);
865 if (ret < 0)
866 return ret;
867
868 /* The capture device might have changed its output */
869 ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
870 if (ret < 0)
871 return ret;
872
873 dev_dbg(icd->dev.parent, "Sensor cropped %dx%d\n",
874 mf.width, mf.height);
875
876 icd->user_width = mf.width;
877 icd->user_height = mf.height;
878
879 return ret;
880}
881
882static int mx2_camera_set_fmt(struct soc_camera_device *icd,
883 struct v4l2_format *f)
884{
885 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
886 struct mx2_camera_dev *pcdev = ici->priv;
887 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
888 const struct soc_camera_format_xlate *xlate;
889 struct v4l2_pix_format *pix = &f->fmt.pix;
890 struct v4l2_mbus_framefmt mf;
891 int ret;
892
893 xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
894 if (!xlate) {
895 dev_warn(icd->dev.parent, "Format %x not found\n",
896 pix->pixelformat);
897 return -EINVAL;
898 }
899
900 /* eMMA can only do RGB565 */
901 if (mx27_camera_emma(pcdev) && pix->pixelformat != V4L2_PIX_FMT_RGB565)
902 return -EINVAL;
903
904 mf.width = pix->width;
905 mf.height = pix->height;
906 mf.field = pix->field;
907 mf.colorspace = pix->colorspace;
908 mf.code = xlate->code;
909
910 ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
911 if (ret < 0 && ret != -ENOIOCTLCMD)
912 return ret;
913
914 if (mf.code != xlate->code)
915 return -EINVAL;
916
917 pix->width = mf.width;
918 pix->height = mf.height;
919 pix->field = mf.field;
920 pix->colorspace = mf.colorspace;
921 icd->current_fmt = xlate;
922
923 return 0;
924}
925
926static int mx2_camera_try_fmt(struct soc_camera_device *icd,
927 struct v4l2_format *f)
928{
929 struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
930 struct mx2_camera_dev *pcdev = ici->priv;
931 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
932 const struct soc_camera_format_xlate *xlate;
933 struct v4l2_pix_format *pix = &f->fmt.pix;
934 struct v4l2_mbus_framefmt mf;
935 __u32 pixfmt = pix->pixelformat;
936 unsigned int width_limit;
937 int ret;
938
939 xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
940 if (pixfmt && !xlate) {
941 dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt);
942 return -EINVAL;
943 }
944
945 /* FIXME: implement MX27 limits */
946
947 /* eMMA can only do RGB565 */
948 if (mx27_camera_emma(pcdev) && pixfmt != V4L2_PIX_FMT_RGB565)
949 return -EINVAL;
950
951 /* limit to MX25 hardware capabilities */
952 if (cpu_is_mx25()) {
953 if (xlate->host_fmt->bits_per_sample <= 8)
954 width_limit = 0xffff * 4;
955 else
956 width_limit = 0xffff * 2;
957 /* CSIIMAG_PARA limit */
958 if (pix->width > width_limit)
959 pix->width = width_limit;
960 if (pix->height > 0xffff)
961 pix->height = 0xffff;
962
963 pix->bytesperline = soc_mbus_bytes_per_line(pix->width,
964 xlate->host_fmt);
965 if (pix->bytesperline < 0)
966 return pix->bytesperline;
967 pix->sizeimage = pix->height * pix->bytesperline;
968 if (pix->sizeimage > (4 * 0x3ffff)) { /* CSIRXCNT limit */
969 dev_warn(icd->dev.parent,
970 "Image size (%u) above limit\n",
971 pix->sizeimage);
972 return -EINVAL;
973 }
974 }
975
976 /* limit to sensor capabilities */
977 mf.width = pix->width;
978 mf.height = pix->height;
979 mf.field = pix->field;
980 mf.colorspace = pix->colorspace;
981 mf.code = xlate->code;
982
983 ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
984 if (ret < 0)
985 return ret;
986
987 if (mf.field == V4L2_FIELD_ANY)
988 mf.field = V4L2_FIELD_NONE;
989 if (mf.field != V4L2_FIELD_NONE) {
990 dev_err(icd->dev.parent, "Field type %d unsupported.\n",
991 mf.field);
992 return -EINVAL;
993 }
994
995 pix->width = mf.width;
996 pix->height = mf.height;
997 pix->field = mf.field;
998 pix->colorspace = mf.colorspace;
999
1000 return 0;
1001}
1002
1003static int mx2_camera_querycap(struct soc_camera_host *ici,
1004 struct v4l2_capability *cap)
1005{
1006 /* cap->name is set by the friendly caller:-> */
1007 strlcpy(cap->card, MX2_CAM_DRIVER_DESCRIPTION, sizeof(cap->card));
1008 cap->version = MX2_CAM_VERSION_CODE;
1009 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1010
1011 return 0;
1012}
1013
1014static int mx2_camera_reqbufs(struct soc_camera_file *icf,
1015 struct v4l2_requestbuffers *p)
1016{
1017 int i;
1018
1019 for (i = 0; i < p->count; i++) {
1020 struct mx2_buffer *buf = container_of(icf->vb_vidq.bufs[i],
1021 struct mx2_buffer, vb);
1022 INIT_LIST_HEAD(&buf->vb.queue);
1023 }
1024
1025 return 0;
1026}
1027
1028#ifdef CONFIG_MACH_MX27
1029static void mx27_camera_frame_done(struct mx2_camera_dev *pcdev, int state)
1030{
1031 struct videobuf_buffer *vb;
1032 struct mx2_buffer *buf;
1033 unsigned long flags;
1034 int ret;
1035
1036 spin_lock_irqsave(&pcdev->lock, flags);
1037
1038 if (!pcdev->active) {
1039 dev_err(pcdev->dev, "%s called with no active buffer!\n",
1040 __func__);
1041 goto out;
1042 }
1043
1044 vb = &pcdev->active->vb;
1045 buf = container_of(vb, struct mx2_buffer, vb);
1046 WARN_ON(list_empty(&vb->queue));
1047 dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
1048 vb, vb->baddr, vb->bsize);
1049
1050 /* _init is used to debug races, see comment in pxa_camera_reqbufs() */
1051 list_del_init(&vb->queue);
1052 vb->state = state;
1053 do_gettimeofday(&vb->ts);
1054 vb->field_count++;
1055
1056 wake_up(&vb->done);
1057
1058 if (list_empty(&pcdev->capture)) {
1059 pcdev->active = NULL;
1060 goto out;
1061 }
1062
1063 pcdev->active = list_entry(pcdev->capture.next,
1064 struct mx2_buffer, vb.queue);
1065
1066 vb = &pcdev->active->vb;
1067 vb->state = VIDEOBUF_ACTIVE;
1068
1069 ret = imx_dma_setup_single(pcdev->dma, videobuf_to_dma_contig(vb),
1070 vb->size, (u32)pcdev->base_dma + 0x10, DMA_MODE_READ);
1071
1072 if (ret) {
1073 vb->state = VIDEOBUF_ERROR;
1074 pcdev->active = NULL;
1075 wake_up(&vb->done);
1076 }
1077
1078out:
1079 spin_unlock_irqrestore(&pcdev->lock, flags);
1080}
1081
1082static void mx27_camera_dma_err_callback(int channel, void *data, int err)
1083{
1084 struct mx2_camera_dev *pcdev = data;
1085
1086 mx27_camera_frame_done(pcdev, VIDEOBUF_ERROR);
1087}
1088
1089static void mx27_camera_dma_callback(int channel, void *data)
1090{
1091 struct mx2_camera_dev *pcdev = data;
1092
1093 mx27_camera_frame_done(pcdev, VIDEOBUF_DONE);
1094}
1095
1096#define DMA_REQ_CSI_RX 31 /* FIXME: Add this to a resource */
1097
1098static int __devinit mx27_camera_dma_init(struct platform_device *pdev,
1099 struct mx2_camera_dev *pcdev)
1100{
1101 int err;
1102
1103 pcdev->dma = imx_dma_request_by_prio("CSI RX DMA", DMA_PRIO_HIGH);
1104 if (pcdev->dma < 0) {
1105 dev_err(&pdev->dev, "%s failed to request DMA channel\n",
1106 __func__);
1107 return pcdev->dma;
1108 }
1109
1110 err = imx_dma_setup_handlers(pcdev->dma, mx27_camera_dma_callback,
1111 mx27_camera_dma_err_callback, pcdev);
1112 if (err) {
1113 dev_err(&pdev->dev, "%s failed to set DMA callback\n",
1114 __func__);
1115 goto err_out;
1116 }
1117
1118 err = imx_dma_config_channel(pcdev->dma,
1119 IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_FIFO,
1120 IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
1121 DMA_REQ_CSI_RX, 1);
1122 if (err) {
1123 dev_err(&pdev->dev, "%s failed to config DMA channel\n",
1124 __func__);
1125 goto err_out;
1126 }
1127
1128 imx_dma_config_burstlen(pcdev->dma, 64);
1129
1130 return 0;
1131
1132err_out:
1133 imx_dma_free(pcdev->dma);
1134
1135 return err;
1136}
1137#endif /* CONFIG_MACH_MX27 */
1138
1139static unsigned int mx2_camera_poll(struct file *file, poll_table *pt)
1140{
1141 struct soc_camera_file *icf = file->private_data;
1142
1143 return videobuf_poll_stream(file, &icf->vb_vidq, pt);
1144}
1145
1146static struct soc_camera_host_ops mx2_soc_camera_host_ops = {
1147 .owner = THIS_MODULE,
1148 .add = mx2_camera_add_device,
1149 .remove = mx2_camera_remove_device,
1150 .set_fmt = mx2_camera_set_fmt,
1151 .set_crop = mx2_camera_set_crop,
1152 .try_fmt = mx2_camera_try_fmt,
1153 .init_videobuf = mx2_camera_init_videobuf,
1154 .reqbufs = mx2_camera_reqbufs,
1155 .poll = mx2_camera_poll,
1156 .querycap = mx2_camera_querycap,
1157 .set_bus_param = mx2_camera_set_bus_param,
1158};
1159
1160static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev,
1161 int bufnum, int state)
1162{
1163 struct mx2_buffer *buf;
1164 struct videobuf_buffer *vb;
1165 unsigned long phys;
1166
1167 if (!list_empty(&pcdev->active_bufs)) {
1168 buf = list_entry(pcdev->active_bufs.next,
1169 struct mx2_buffer, vb.queue);
1170
1171 BUG_ON(buf->bufnum != bufnum);
1172
1173 vb = &buf->vb;
1174#ifdef DEBUG
1175 phys = videobuf_to_dma_contig(vb);
1176 if (readl(pcdev->base_emma + PRP_DEST_RGB1_PTR + 4 * bufnum)
1177 != phys) {
1178 dev_err(pcdev->dev, "%p != %p\n", phys,
1179 readl(pcdev->base_emma +
1180 PRP_DEST_RGB1_PTR +
1181 4 * bufnum));
1182 }
1183#endif
1184 dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, vb,
1185 vb->baddr, vb->bsize);
1186
1187 list_del(&vb->queue);
1188 vb->state = state;
1189 do_gettimeofday(&vb->ts);
1190 vb->field_count++;
1191
1192 wake_up(&vb->done);
1193 }
1194
1195 if (list_empty(&pcdev->capture)) {
1196 writel(pcdev->discard_buffer_dma, pcdev->base_emma +
1197 PRP_DEST_RGB1_PTR + 4 * bufnum);
1198 return;
1199 }
1200
1201 buf = list_entry(pcdev->capture.next,
1202 struct mx2_buffer, vb.queue);
1203
1204 buf->bufnum = bufnum;
1205
1206 list_move_tail(pcdev->capture.next, &pcdev->active_bufs);
1207
1208 vb = &buf->vb;
1209 vb->state = VIDEOBUF_ACTIVE;
1210
1211 phys = videobuf_to_dma_contig(vb);
1212 writel(phys, pcdev->base_emma + PRP_DEST_RGB1_PTR + 4 * bufnum);
1213}
1214
1215static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data)
1216{
1217 struct mx2_camera_dev *pcdev = data;
1218 unsigned int status = readl(pcdev->base_emma + PRP_INTRSTATUS);
1219 struct mx2_buffer *buf;
1220
1221 if (status & (1 << 7)) { /* overflow */
1222 u32 cntl;
1223 /*
1224 * We only disable channel 1 here since this is the only
1225 * enabled channel
1226 *
1227 * FIXME: the correct DMA overflow handling should be resetting
1228 * the buffer, returning an error frame, and continuing with
1229 * the next one.
1230 */
1231 cntl = readl(pcdev->base_emma + PRP_CNTL);
1232 writel(cntl & ~PRP_CNTL_CH1EN, pcdev->base_emma + PRP_CNTL);
1233 writel(cntl, pcdev->base_emma + PRP_CNTL);
1234 }
1235 if ((status & (3 << 5)) == (3 << 5)
1236 && !list_empty(&pcdev->active_bufs)) {
1237 /*
1238 * Both buffers have triggered, process the one we're expecting
1239 * to first
1240 */
1241 buf = list_entry(pcdev->active_bufs.next,
1242 struct mx2_buffer, vb.queue);
1243 mx27_camera_frame_done_emma(pcdev, buf->bufnum, VIDEOBUF_DONE);
1244 status &= ~(1 << (6 - buf->bufnum)); /* mark processed */
1245 }
1246 if (status & (1 << 6))
1247 mx27_camera_frame_done_emma(pcdev, 0, VIDEOBUF_DONE);
1248 if (status & (1 << 5))
1249 mx27_camera_frame_done_emma(pcdev, 1, VIDEOBUF_DONE);
1250
1251 writel(status, pcdev->base_emma + PRP_INTRSTATUS);
1252
1253 return IRQ_HANDLED;
1254}
1255
1256static int __devinit mx27_camera_emma_init(struct mx2_camera_dev *pcdev)
1257{
1258 struct resource *res_emma = pcdev->res_emma;
1259 int err = 0;
1260
1261 if (!request_mem_region(res_emma->start, resource_size(res_emma),
1262 MX2_CAM_DRV_NAME)) {
1263 err = -EBUSY;
1264 goto out;
1265 }
1266
1267 pcdev->base_emma = ioremap(res_emma->start, resource_size(res_emma));
1268 if (!pcdev->base_emma) {
1269 err = -ENOMEM;
1270 goto exit_release;
1271 }
1272
1273 err = request_irq(pcdev->irq_emma, mx27_camera_emma_irq, 0,
1274 MX2_CAM_DRV_NAME, pcdev);
1275 if (err) {
1276 dev_err(pcdev->dev, "Camera EMMA interrupt register failed \n");
1277 goto exit_iounmap;
1278 }
1279
1280 pcdev->clk_emma = clk_get(NULL, "emma");
1281 if (IS_ERR(pcdev->clk_emma)) {
1282 err = PTR_ERR(pcdev->clk_emma);
1283 goto exit_free_irq;
1284 }
1285
1286 clk_enable(pcdev->clk_emma);
1287
1288 err = mx27_camera_emma_prp_reset(pcdev);
1289 if (err)
1290 goto exit_clk_emma_put;
1291
1292 return err;
1293
1294exit_clk_emma_put:
1295 clk_disable(pcdev->clk_emma);
1296 clk_put(pcdev->clk_emma);
1297exit_free_irq:
1298 free_irq(pcdev->irq_emma, pcdev);
1299exit_iounmap:
1300 iounmap(pcdev->base_emma);
1301exit_release:
1302 release_mem_region(res_emma->start, resource_size(res_emma));
1303out:
1304 return err;
1305}
1306
1307static int __devinit mx2_camera_probe(struct platform_device *pdev)
1308{
1309 struct mx2_camera_dev *pcdev;
1310 struct resource *res_csi, *res_emma;
1311 void __iomem *base_csi;
1312 int irq_csi, irq_emma;
1313 irq_handler_t mx2_cam_irq_handler = cpu_is_mx25() ? mx25_camera_irq
1314 : mx27_camera_irq;
1315 int err = 0;
1316
1317 dev_dbg(&pdev->dev, "initialising\n");
1318
1319 res_csi = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1320 irq_csi = platform_get_irq(pdev, 0);
1321 if (res_csi == NULL || irq_csi < 0) {
1322 dev_err(&pdev->dev, "Missing platform resources data\n");
1323 err = -ENODEV;
1324 goto exit;
1325 }
1326
1327 pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
1328 if (!pcdev) {
1329 dev_err(&pdev->dev, "Could not allocate pcdev\n");
1330 err = -ENOMEM;
1331 goto exit;
1332 }
1333
1334 pcdev->clk_csi = clk_get(&pdev->dev, NULL);
1335 if (IS_ERR(pcdev->clk_csi)) {
1336 err = PTR_ERR(pcdev->clk_csi);
1337 goto exit_kfree;
1338 }
1339
1340 dev_dbg(&pdev->dev, "Camera clock frequency: %ld\n",
1341 clk_get_rate(pcdev->clk_csi));
1342
1343 /* Initialize DMA */
1344#ifdef CONFIG_MACH_MX27
1345 if (cpu_is_mx27()) {
1346 err = mx27_camera_dma_init(pdev, pcdev);
1347 if (err)
1348 goto exit_clk_put;
1349 }
1350#endif /* CONFIG_MACH_MX27 */
1351
1352 pcdev->res_csi = res_csi;
1353 pcdev->pdata = pdev->dev.platform_data;
1354 if (pcdev->pdata) {
1355 long rate;
1356
1357 pcdev->platform_flags = pcdev->pdata->flags;
1358
1359 rate = clk_round_rate(pcdev->clk_csi, pcdev->pdata->clk * 2);
1360 if (rate <= 0) {
1361 err = -ENODEV;
1362 goto exit_dma_free;
1363 }
1364 err = clk_set_rate(pcdev->clk_csi, rate);
1365 if (err < 0)
1366 goto exit_dma_free;
1367 }
1368
1369 INIT_LIST_HEAD(&pcdev->capture);
1370 INIT_LIST_HEAD(&pcdev->active_bufs);
1371 spin_lock_init(&pcdev->lock);
1372
1373 /*
1374 * Request the regions.
1375 */
1376 if (!request_mem_region(res_csi->start, resource_size(res_csi),
1377 MX2_CAM_DRV_NAME)) {
1378 err = -EBUSY;
1379 goto exit_dma_free;
1380 }
1381
1382 base_csi = ioremap(res_csi->start, resource_size(res_csi));
1383 if (!base_csi) {
1384 err = -ENOMEM;
1385 goto exit_release;
1386 }
1387 pcdev->irq_csi = irq_csi;
1388 pcdev->base_csi = base_csi;
1389 pcdev->base_dma = res_csi->start;
1390 pcdev->dev = &pdev->dev;
1391
1392 err = request_irq(pcdev->irq_csi, mx2_cam_irq_handler, 0,
1393 MX2_CAM_DRV_NAME, pcdev);
1394 if (err) {
1395 dev_err(pcdev->dev, "Camera interrupt register failed \n");
1396 goto exit_iounmap;
1397 }
1398
1399 if (cpu_is_mx27()) {
1400 /* EMMA support */
1401 res_emma = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1402 irq_emma = platform_get_irq(pdev, 1);
1403
1404 if (res_emma && irq_emma >= 0) {
1405 dev_info(&pdev->dev, "Using EMMA\n");
1406 pcdev->use_emma = 1;
1407 pcdev->res_emma = res_emma;
1408 pcdev->irq_emma = irq_emma;
1409 if (mx27_camera_emma_init(pcdev))
1410 goto exit_free_irq;
1411 }
1412 }
1413
1414 pcdev->soc_host.drv_name = MX2_CAM_DRV_NAME,
1415 pcdev->soc_host.ops = &mx2_soc_camera_host_ops,
1416 pcdev->soc_host.priv = pcdev;
1417 pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
1418 pcdev->soc_host.nr = pdev->id;
1419 err = soc_camera_host_register(&pcdev->soc_host);
1420 if (err)
1421 goto exit_free_emma;
1422
1423 return 0;
1424
1425exit_free_emma:
1426 if (mx27_camera_emma(pcdev)) {
1427 free_irq(pcdev->irq_emma, pcdev);
1428 clk_disable(pcdev->clk_emma);
1429 clk_put(pcdev->clk_emma);
1430 iounmap(pcdev->base_emma);
1431 release_mem_region(res_emma->start, resource_size(res_emma));
1432 }
1433exit_free_irq:
1434 free_irq(pcdev->irq_csi, pcdev);
1435exit_iounmap:
1436 iounmap(base_csi);
1437exit_release:
1438 release_mem_region(res_csi->start, resource_size(res_csi));
1439exit_dma_free:
1440#ifdef CONFIG_MACH_MX27
1441 if (cpu_is_mx27())
1442 imx_dma_free(pcdev->dma);
1443exit_clk_put:
1444 clk_put(pcdev->clk_csi);
1445#endif /* CONFIG_MACH_MX27 */
1446exit_kfree:
1447 kfree(pcdev);
1448exit:
1449 return err;
1450}
1451
1452static int __devexit mx2_camera_remove(struct platform_device *pdev)
1453{
1454 struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
1455 struct mx2_camera_dev *pcdev = container_of(soc_host,
1456 struct mx2_camera_dev, soc_host);
1457 struct resource *res;
1458
1459 clk_put(pcdev->clk_csi);
1460#ifdef CONFIG_MACH_MX27
1461 if (cpu_is_mx27())
1462 imx_dma_free(pcdev->dma);
1463#endif /* CONFIG_MACH_MX27 */
1464 free_irq(pcdev->irq_csi, pcdev);
1465 if (mx27_camera_emma(pcdev))
1466 free_irq(pcdev->irq_emma, pcdev);
1467
1468 soc_camera_host_unregister(&pcdev->soc_host);
1469
1470 iounmap(pcdev->base_csi);
1471
1472 if (mx27_camera_emma(pcdev)) {
1473 clk_disable(pcdev->clk_emma);
1474 clk_put(pcdev->clk_emma);
1475 iounmap(pcdev->base_emma);
1476 res = pcdev->res_emma;
1477 release_mem_region(res->start, resource_size(res));
1478 }
1479
1480 res = pcdev->res_csi;
1481 release_mem_region(res->start, resource_size(res));
1482
1483 kfree(pcdev);
1484
1485 dev_info(&pdev->dev, "MX2 Camera driver unloaded\n");
1486
1487 return 0;
1488}
1489
1490static struct platform_driver mx2_camera_driver = {
1491 .driver = {
1492 .name = MX2_CAM_DRV_NAME,
1493 },
1494 .remove = __devexit_p(mx2_camera_remove),
1495};
1496
1497
1498static int __init mx2_camera_init(void)
1499{
1500 return platform_driver_probe(&mx2_camera_driver, &mx2_camera_probe);
1501}
1502
1503static void __exit mx2_camera_exit(void)
1504{
1505 return platform_driver_unregister(&mx2_camera_driver);
1506}
1507
1508module_init(mx2_camera_init);
1509module_exit(mx2_camera_exit);
1510
1511MODULE_DESCRIPTION("i.MX27/i.MX25 SoC Camera Host driver");
1512MODULE_AUTHOR("Sascha Hauer <sha@pengutronix.de>");
1513MODULE_LICENSE("GPL");
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 26386a92f5aa..9b089dfb173e 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -353,6 +353,16 @@ config VMWARE_BALLOON
353 To compile this driver as a module, choose M here: the 353 To compile this driver as a module, choose M here: the
354 module will be called vmware_balloon. 354 module will be called vmware_balloon.
355 355
356config ARM_CHARLCD
357 bool "ARM Ltd. Character LCD Driver"
358 depends on PLAT_VERSATILE
359 help
360 This is a driver for the character LCD found on the ARM Ltd.
361 Versatile and RealView Platform Baseboards. It doesn't do
362 very much more than display the text "ARM Linux" on the first
363 line and the Linux version on the second line, but that's
364 still useful.
365
356source "drivers/misc/c2port/Kconfig" 366source "drivers/misc/c2port/Kconfig"
357source "drivers/misc/eeprom/Kconfig" 367source "drivers/misc/eeprom/Kconfig"
358source "drivers/misc/cb710/Kconfig" 368source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 6ed06a19474a..67552d6e9327 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -31,3 +31,4 @@ obj-$(CONFIG_IWMC3200TOP) += iwmc3200top/
31obj-y += eeprom/ 31obj-y += eeprom/
32obj-y += cb710/ 32obj-y += cb710/
33obj-$(CONFIG_VMWARE_BALLOON) += vmware_balloon.o 33obj-$(CONFIG_VMWARE_BALLOON) += vmware_balloon.o
34obj-$(CONFIG_ARM_CHARLCD) += arm-charlcd.o
diff --git a/drivers/misc/arm-charlcd.c b/drivers/misc/arm-charlcd.c
new file mode 100644
index 000000000000..9e3879ef58f2
--- /dev/null
+++ b/drivers/misc/arm-charlcd.c
@@ -0,0 +1,396 @@
1/*
2 * Driver for the on-board character LCD found on some ARM reference boards
3 * This is basically an Hitachi HD44780 LCD with a custom IP block to drive it
4 * http://en.wikipedia.org/wiki/HD44780_Character_LCD
5 * Currently it will just display the text "ARM Linux" and the linux version
6 *
7 * License terms: GNU General Public License (GPL) version 2
8 * Author: Linus Walleij <triad@df.lth.se>
9 */
10#include <linux/init.h>
11#include <linux/module.h>
12#include <linux/interrupt.h>
13#include <linux/platform_device.h>
14#include <linux/completion.h>
15#include <linux/delay.h>
16#include <linux/io.h>
17#include <linux/slab.h>
18#include <linux/workqueue.h>
19#include <generated/utsrelease.h>
20
21#define DRIVERNAME "arm-charlcd"
22#define CHARLCD_TIMEOUT (msecs_to_jiffies(1000))
23
24/* Offsets to registers */
25#define CHAR_COM 0x00U
26#define CHAR_DAT 0x04U
27#define CHAR_RD 0x08U
28#define CHAR_RAW 0x0CU
29#define CHAR_MASK 0x10U
30#define CHAR_STAT 0x14U
31
32#define CHAR_RAW_CLEAR 0x00000000U
33#define CHAR_RAW_VALID 0x00000100U
34
35/* Hitachi HD44780 display commands */
36#define HD_CLEAR 0x01U
37#define HD_HOME 0x02U
38#define HD_ENTRYMODE 0x04U
39#define HD_ENTRYMODE_INCREMENT 0x02U
40#define HD_ENTRYMODE_SHIFT 0x01U
41#define HD_DISPCTRL 0x08U
42#define HD_DISPCTRL_ON 0x04U
43#define HD_DISPCTRL_CURSOR_ON 0x02U
44#define HD_DISPCTRL_CURSOR_BLINK 0x01U
45#define HD_CRSR_SHIFT 0x10U
46#define HD_CRSR_SHIFT_DISPLAY 0x08U
47#define HD_CRSR_SHIFT_DISPLAY_RIGHT 0x04U
48#define HD_FUNCSET 0x20U
49#define HD_FUNCSET_8BIT 0x10U
50#define HD_FUNCSET_2_LINES 0x08U
51#define HD_FUNCSET_FONT_5X10 0x04U
52#define HD_SET_CGRAM 0x40U
53#define HD_SET_DDRAM 0x80U
54#define HD_BUSY_FLAG 0x80U
55
56/**
57 * @dev: a pointer back to containing device
58 * @phybase: the offset to the controller in physical memory
59 * @physize: the size of the physical page
60 * @virtbase: the offset to the controller in virtual memory
61 * @irq: reserved interrupt number
62 * @complete: completion structure for the last LCD command
63 */
64struct charlcd {
65 struct device *dev;
66 u32 phybase;
67 u32 physize;
68 void __iomem *virtbase;
69 int irq;
70 struct completion complete;
71 struct delayed_work init_work;
72};
73
74static irqreturn_t charlcd_interrupt(int irq, void *data)
75{
76 struct charlcd *lcd = data;
77 u8 status;
78
79 status = readl(lcd->virtbase + CHAR_STAT) & 0x01;
80 /* Clear IRQ */
81 writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
82 if (status)
83 complete(&lcd->complete);
84 else
85 dev_info(lcd->dev, "Spurious IRQ (%02x)\n", status);
86 return IRQ_HANDLED;
87}
88
89
90static void charlcd_wait_complete_irq(struct charlcd *lcd)
91{
92 int ret;
93
94 ret = wait_for_completion_interruptible_timeout(&lcd->complete,
95 CHARLCD_TIMEOUT);
96 /* Disable IRQ after completion */
97 writel(0x00, lcd->virtbase + CHAR_MASK);
98
99 if (ret < 0) {
100 dev_err(lcd->dev,
101 "wait_for_completion_interruptible_timeout() "
102 "returned %d waiting for ready\n", ret);
103 return;
104 }
105
106 if (ret == 0) {
107 dev_err(lcd->dev, "charlcd controller timed out "
108 "waiting for ready\n");
109 return;
110 }
111}
112
113static u8 charlcd_4bit_read_char(struct charlcd *lcd)
114{
115 u8 data;
116 u32 val;
117 int i;
118
119 /* If we can, use an IRQ to wait for the data, else poll */
120 if (lcd->irq >= 0)
121 charlcd_wait_complete_irq(lcd);
122 else {
123 i = 0;
124 val = 0;
125 while (!(val & CHAR_RAW_VALID) && i < 10) {
126 udelay(100);
127 val = readl(lcd->virtbase + CHAR_RAW);
128 i++;
129 }
130
131 writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
132 }
133 msleep(1);
134
135 /* Read the 4 high bits of the data */
136 data = readl(lcd->virtbase + CHAR_RD) & 0xf0;
137
138 /*
139 * The second read for the low bits does not trigger an IRQ
140 * so in this case we have to poll for the 4 lower bits
141 */
142 i = 0;
143 val = 0;
144 while (!(val & CHAR_RAW_VALID) && i < 10) {
145 udelay(100);
146 val = readl(lcd->virtbase + CHAR_RAW);
147 i++;
148 }
149 writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
150 msleep(1);
151
152 /* Read the 4 low bits of the data */
153 data |= (readl(lcd->virtbase + CHAR_RD) >> 4) & 0x0f;
154
155 return data;
156}
157
158static bool charlcd_4bit_read_bf(struct charlcd *lcd)
159{
160 if (lcd->irq >= 0) {
161 /*
162 * If we'll use IRQs to wait for the busyflag, clear any
163 * pending flag and enable IRQ
164 */
165 writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
166 init_completion(&lcd->complete);
167 writel(0x01, lcd->virtbase + CHAR_MASK);
168 }
169 readl(lcd->virtbase + CHAR_COM);
170 return charlcd_4bit_read_char(lcd) & HD_BUSY_FLAG ? true : false;
171}
172
173static void charlcd_4bit_wait_busy(struct charlcd *lcd)
174{
175 int retries = 50;
176
177 udelay(100);
178 while (charlcd_4bit_read_bf(lcd) && retries)
179 retries--;
180 if (!retries)
181 dev_err(lcd->dev, "timeout waiting for busyflag\n");
182}
183
184static void charlcd_4bit_command(struct charlcd *lcd, u8 cmd)
185{
186 u32 cmdlo = (cmd << 4) & 0xf0;
187 u32 cmdhi = (cmd & 0xf0);
188
189 writel(cmdhi, lcd->virtbase + CHAR_COM);
190 udelay(10);
191 writel(cmdlo, lcd->virtbase + CHAR_COM);
192 charlcd_4bit_wait_busy(lcd);
193}
194
195static void charlcd_4bit_char(struct charlcd *lcd, u8 ch)
196{
197 u32 chlo = (ch << 4) & 0xf0;
198 u32 chhi = (ch & 0xf0);
199
200 writel(chhi, lcd->virtbase + CHAR_DAT);
201 udelay(10);
202 writel(chlo, lcd->virtbase + CHAR_DAT);
203 charlcd_4bit_wait_busy(lcd);
204}
205
206static void charlcd_4bit_print(struct charlcd *lcd, int line, const char *str)
207{
208 u8 offset;
209 int i;
210
211 /*
212 * We support line 0, 1
213 * Line 1 runs from 0x00..0x27
214 * Line 2 runs from 0x28..0x4f
215 */
216 if (line == 0)
217 offset = 0;
218 else if (line == 1)
219 offset = 0x28;
220 else
221 return;
222
223 /* Set offset */
224 charlcd_4bit_command(lcd, HD_SET_DDRAM | offset);
225
226 /* Send string */
227 for (i = 0; i < strlen(str) && i < 0x28; i++)
228 charlcd_4bit_char(lcd, str[i]);
229}
230
231static void charlcd_4bit_init(struct charlcd *lcd)
232{
233 /* These commands cannot be checked with the busy flag */
234 writel(HD_FUNCSET | HD_FUNCSET_8BIT, lcd->virtbase + CHAR_COM);
235 msleep(5);
236 writel(HD_FUNCSET | HD_FUNCSET_8BIT, lcd->virtbase + CHAR_COM);
237 udelay(100);
238 writel(HD_FUNCSET | HD_FUNCSET_8BIT, lcd->virtbase + CHAR_COM);
239 udelay(100);
240 /* Go to 4bit mode */
241 writel(HD_FUNCSET, lcd->virtbase + CHAR_COM);
242 udelay(100);
243 /*
244 * 4bit mode, 2 lines, 5x8 font, after this the number of lines
245 * and the font cannot be changed until the next initialization sequence
246 */
247 charlcd_4bit_command(lcd, HD_FUNCSET | HD_FUNCSET_2_LINES);
248 charlcd_4bit_command(lcd, HD_DISPCTRL | HD_DISPCTRL_ON);
249 charlcd_4bit_command(lcd, HD_ENTRYMODE | HD_ENTRYMODE_INCREMENT);
250 charlcd_4bit_command(lcd, HD_CLEAR);
251 charlcd_4bit_command(lcd, HD_HOME);
252 /* Put something useful in the display */
253 charlcd_4bit_print(lcd, 0, "ARM Linux");
254 charlcd_4bit_print(lcd, 1, UTS_RELEASE);
255}
256
257static void charlcd_init_work(struct work_struct *work)
258{
259 struct charlcd *lcd =
260 container_of(work, struct charlcd, init_work.work);
261
262 charlcd_4bit_init(lcd);
263}
264
265static int __init charlcd_probe(struct platform_device *pdev)
266{
267 int ret;
268 struct charlcd *lcd;
269 struct resource *res;
270
271 lcd = kzalloc(sizeof(struct charlcd), GFP_KERNEL);
272 if (!lcd)
273 return -ENOMEM;
274
275 lcd->dev = &pdev->dev;
276
277 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
278 if (!res) {
279 ret = -ENOENT;
280 goto out_no_resource;
281 }
282 lcd->phybase = res->start;
283 lcd->physize = resource_size(res);
284
285 if (request_mem_region(lcd->phybase, lcd->physize,
286 DRIVERNAME) == NULL) {
287 ret = -EBUSY;
288 goto out_no_memregion;
289 }
290
291 lcd->virtbase = ioremap(lcd->phybase, lcd->physize);
292 if (!lcd->virtbase) {
293 ret = -ENOMEM;
294 goto out_no_remap;
295 }
296
297 lcd->irq = platform_get_irq(pdev, 0);
298 /* If no IRQ is supplied, we'll survive without it */
299 if (lcd->irq >= 0) {
300 if (request_irq(lcd->irq, charlcd_interrupt, IRQF_DISABLED,
301 DRIVERNAME, lcd)) {
302 ret = -EIO;
303 goto out_no_irq;
304 }
305 }
306
307 platform_set_drvdata(pdev, lcd);
308
309 /*
310 * Initialize the display in a delayed work, because
311 * it is VERY slow and would slow down the boot of the system.
312 */
313 INIT_DELAYED_WORK(&lcd->init_work, charlcd_init_work);
314 schedule_delayed_work(&lcd->init_work, 0);
315
316 dev_info(&pdev->dev, "initalized ARM character LCD at %08x\n",
317 lcd->phybase);
318
319 return 0;
320
321out_no_irq:
322 iounmap(lcd->virtbase);
323out_no_remap:
324 platform_set_drvdata(pdev, NULL);
325out_no_memregion:
326 release_mem_region(lcd->phybase, SZ_4K);
327out_no_resource:
328 kfree(lcd);
329 return ret;
330}
331
332static int __exit charlcd_remove(struct platform_device *pdev)
333{
334 struct charlcd *lcd = platform_get_drvdata(pdev);
335
336 if (lcd) {
337 free_irq(lcd->irq, lcd);
338 iounmap(lcd->virtbase);
339 release_mem_region(lcd->phybase, lcd->physize);
340 platform_set_drvdata(pdev, NULL);
341 kfree(lcd);
342 }
343
344 return 0;
345}
346
347static int charlcd_suspend(struct device *dev)
348{
349 struct platform_device *pdev = to_platform_device(dev);
350 struct charlcd *lcd = platform_get_drvdata(pdev);
351
352 /* Power the display off */
353 charlcd_4bit_command(lcd, HD_DISPCTRL);
354 return 0;
355}
356
357static int charlcd_resume(struct device *dev)
358{
359 struct platform_device *pdev = to_platform_device(dev);
360 struct charlcd *lcd = platform_get_drvdata(pdev);
361
362 /* Turn the display back on */
363 charlcd_4bit_command(lcd, HD_DISPCTRL | HD_DISPCTRL_ON);
364 return 0;
365}
366
367static const struct dev_pm_ops charlcd_pm_ops = {
368 .suspend = charlcd_suspend,
369 .resume = charlcd_resume,
370};
371
372static struct platform_driver charlcd_driver = {
373 .driver = {
374 .name = DRIVERNAME,
375 .owner = THIS_MODULE,
376 .pm = &charlcd_pm_ops,
377 },
378 .remove = __exit_p(charlcd_remove),
379};
380
381static int __init charlcd_init(void)
382{
383 return platform_driver_probe(&charlcd_driver, charlcd_probe);
384}
385
386static void __exit charlcd_exit(void)
387{
388 platform_driver_unregister(&charlcd_driver);
389}
390
391module_init(charlcd_init);
392module_exit(charlcd_exit);
393
394MODULE_AUTHOR("Linus Walleij <triad@df.lth.se>");
395MODULE_DESCRIPTION("ARM Character LCD Driver");
396MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 2ed435bd4b6c..840b301b5671 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -26,7 +26,6 @@
26#include <linux/amba/mmci.h> 26#include <linux/amba/mmci.h>
27#include <linux/regulator/consumer.h> 27#include <linux/regulator/consumer.h>
28 28
29#include <asm/cacheflush.h>
30#include <asm/div64.h> 29#include <asm/div64.h>
31#include <asm/io.h> 30#include <asm/io.h>
32#include <asm/sizes.h> 31#include <asm/sizes.h>
@@ -37,12 +36,39 @@
37 36
38static unsigned int fmax = 515633; 37static unsigned int fmax = 515633;
39 38
39/**
40 * struct variant_data - MMCI variant-specific quirks
41 * @clkreg: default value for MCICLOCK register
42 * @clkreg_enable: enable value for MMCICLOCK register
43 * @datalength_bits: number of bits in the MMCIDATALENGTH register
44 */
45struct variant_data {
46 unsigned int clkreg;
47 unsigned int clkreg_enable;
48 unsigned int datalength_bits;
49};
50
51static struct variant_data variant_arm = {
52 .datalength_bits = 16,
53};
54
55static struct variant_data variant_u300 = {
56 .clkreg_enable = 1 << 13, /* HWFCEN */
57 .datalength_bits = 16,
58};
59
60static struct variant_data variant_ux500 = {
61 .clkreg = MCI_CLK_ENABLE,
62 .clkreg_enable = 1 << 14, /* HWFCEN */
63 .datalength_bits = 24,
64};
40/* 65/*
41 * This must be called with host->lock held 66 * This must be called with host->lock held
42 */ 67 */
43static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired) 68static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
44{ 69{
45 u32 clk = 0; 70 struct variant_data *variant = host->variant;
71 u32 clk = variant->clkreg;
46 72
47 if (desired) { 73 if (desired) {
48 if (desired >= host->mclk) { 74 if (desired >= host->mclk) {
@@ -54,8 +80,8 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
54 clk = 255; 80 clk = 255;
55 host->cclk = host->mclk / (2 * (clk + 1)); 81 host->cclk = host->mclk / (2 * (clk + 1));
56 } 82 }
57 if (host->hw_designer == AMBA_VENDOR_ST) 83
58 clk |= MCI_ST_FCEN; /* Bug fix in ST IP block */ 84 clk |= variant->clkreg_enable;
59 clk |= MCI_CLK_ENABLE; 85 clk |= MCI_CLK_ENABLE;
60 /* This hasn't proven to be worthwhile */ 86 /* This hasn't proven to be worthwhile */
61 /* clk |= MCI_CLK_PWRSAVE; */ 87 /* clk |= MCI_CLK_PWRSAVE; */
@@ -98,6 +124,18 @@ static void mmci_stop_data(struct mmci_host *host)
98 host->data = NULL; 124 host->data = NULL;
99} 125}
100 126
127static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
128{
129 unsigned int flags = SG_MITER_ATOMIC;
130
131 if (data->flags & MMC_DATA_READ)
132 flags |= SG_MITER_TO_SG;
133 else
134 flags |= SG_MITER_FROM_SG;
135
136 sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
137}
138
101static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) 139static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
102{ 140{
103 unsigned int datactrl, timeout, irqmask; 141 unsigned int datactrl, timeout, irqmask;
@@ -109,7 +147,7 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
109 data->blksz, data->blocks, data->flags); 147 data->blksz, data->blocks, data->flags);
110 148
111 host->data = data; 149 host->data = data;
112 host->size = data->blksz; 150 host->size = data->blksz * data->blocks;
113 host->data_xfered = 0; 151 host->data_xfered = 0;
114 152
115 mmci_init_sg(host, data); 153 mmci_init_sg(host, data);
@@ -210,8 +248,17 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
210 * We hit an error condition. Ensure that any data 248 * We hit an error condition. Ensure that any data
211 * partially written to a page is properly coherent. 249 * partially written to a page is properly coherent.
212 */ 250 */
213 if (host->sg_len && data->flags & MMC_DATA_READ) 251 if (data->flags & MMC_DATA_READ) {
214 flush_dcache_page(sg_page(host->sg_ptr)); 252 struct sg_mapping_iter *sg_miter = &host->sg_miter;
253 unsigned long flags;
254
255 local_irq_save(flags);
256 if (sg_miter_next(sg_miter)) {
257 flush_dcache_page(sg_miter->page);
258 sg_miter_stop(sg_miter);
259 }
260 local_irq_restore(flags);
261 }
215 } 262 }
216 if (status & MCI_DATAEND) { 263 if (status & MCI_DATAEND) {
217 mmci_stop_data(host); 264 mmci_stop_data(host);
@@ -314,15 +361,18 @@ static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int rem
314static irqreturn_t mmci_pio_irq(int irq, void *dev_id) 361static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
315{ 362{
316 struct mmci_host *host = dev_id; 363 struct mmci_host *host = dev_id;
364 struct sg_mapping_iter *sg_miter = &host->sg_miter;
317 void __iomem *base = host->base; 365 void __iomem *base = host->base;
366 unsigned long flags;
318 u32 status; 367 u32 status;
319 368
320 status = readl(base + MMCISTATUS); 369 status = readl(base + MMCISTATUS);
321 370
322 dev_dbg(mmc_dev(host->mmc), "irq1 (pio) %08x\n", status); 371 dev_dbg(mmc_dev(host->mmc), "irq1 (pio) %08x\n", status);
323 372
373 local_irq_save(flags);
374
324 do { 375 do {
325 unsigned long flags;
326 unsigned int remain, len; 376 unsigned int remain, len;
327 char *buffer; 377 char *buffer;
328 378
@@ -336,11 +386,11 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
336 if (!(status & (MCI_TXFIFOHALFEMPTY|MCI_RXDATAAVLBL))) 386 if (!(status & (MCI_TXFIFOHALFEMPTY|MCI_RXDATAAVLBL)))
337 break; 387 break;
338 388
339 /* 389 if (!sg_miter_next(sg_miter))
340 * Map the current scatter buffer. 390 break;
341 */ 391
342 buffer = mmci_kmap_atomic(host, &flags) + host->sg_off; 392 buffer = sg_miter->addr;
343 remain = host->sg_ptr->length - host->sg_off; 393 remain = sg_miter->length;
344 394
345 len = 0; 395 len = 0;
346 if (status & MCI_RXACTIVE) 396 if (status & MCI_RXACTIVE)
@@ -348,31 +398,24 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
348 if (status & MCI_TXACTIVE) 398 if (status & MCI_TXACTIVE)
349 len = mmci_pio_write(host, buffer, remain, status); 399 len = mmci_pio_write(host, buffer, remain, status);
350 400
351 /* 401 sg_miter->consumed = len;
352 * Unmap the buffer.
353 */
354 mmci_kunmap_atomic(host, buffer, &flags);
355 402
356 host->sg_off += len;
357 host->size -= len; 403 host->size -= len;
358 remain -= len; 404 remain -= len;
359 405
360 if (remain) 406 if (remain)
361 break; 407 break;
362 408
363 /*
364 * If we were reading, and we have completed this
365 * page, ensure that the data cache is coherent.
366 */
367 if (status & MCI_RXACTIVE) 409 if (status & MCI_RXACTIVE)
368 flush_dcache_page(sg_page(host->sg_ptr)); 410 flush_dcache_page(sg_miter->page);
369
370 if (!mmci_next_sg(host))
371 break;
372 411
373 status = readl(base + MMCISTATUS); 412 status = readl(base + MMCISTATUS);
374 } while (1); 413 } while (1);
375 414
415 sg_miter_stop(sg_miter);
416
417 local_irq_restore(flags);
418
376 /* 419 /*
377 * If we're nearing the end of the read, switch to 420 * If we're nearing the end of the read, switch to
378 * "any data available" mode. 421 * "any data available" mode.
@@ -477,16 +520,9 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
477 /* This implicitly enables the regulator */ 520 /* This implicitly enables the regulator */
478 mmc_regulator_set_ocr(host->vcc, ios->vdd); 521 mmc_regulator_set_ocr(host->vcc, ios->vdd);
479#endif 522#endif
480 /* 523 if (host->plat->vdd_handler)
481 * The translate_vdd function is not used if you have 524 pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd,
482 * an external regulator, or your design is really weird. 525 ios->power_mode);
483 * Using it would mean sending in power control BOTH using
484 * a regulator AND the 4 MMCIPWR bits. If we don't have
485 * a regulator, we might have some other platform specific
486 * power control behind this translate function.
487 */
488 if (!host->vcc && host->plat->translate_vdd)
489 pwr |= host->plat->translate_vdd(mmc_dev(mmc), ios->vdd);
490 /* The ST version does not have this, fall through to POWER_ON */ 526 /* The ST version does not have this, fall through to POWER_ON */
491 if (host->hw_designer != AMBA_VENDOR_ST) { 527 if (host->hw_designer != AMBA_VENDOR_ST) {
492 pwr |= MCI_PWR_UP; 528 pwr |= MCI_PWR_UP;
@@ -555,21 +591,10 @@ static const struct mmc_host_ops mmci_ops = {
555 .get_cd = mmci_get_cd, 591 .get_cd = mmci_get_cd,
556}; 592};
557 593
558static void mmci_check_status(unsigned long data)
559{
560 struct mmci_host *host = (struct mmci_host *)data;
561 unsigned int status = mmci_get_cd(host->mmc);
562
563 if (status ^ host->oldstat)
564 mmc_detect_change(host->mmc, 0);
565
566 host->oldstat = status;
567 mod_timer(&host->timer, jiffies + HZ);
568}
569
570static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id) 594static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
571{ 595{
572 struct mmci_platform_data *plat = dev->dev.platform_data; 596 struct mmci_platform_data *plat = dev->dev.platform_data;
597 struct variant_data *variant = id->data;
573 struct mmci_host *host; 598 struct mmci_host *host;
574 struct mmc_host *mmc; 599 struct mmc_host *mmc;
575 int ret; 600 int ret;
@@ -613,6 +638,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
613 goto clk_free; 638 goto clk_free;
614 639
615 host->plat = plat; 640 host->plat = plat;
641 host->variant = variant;
616 host->mclk = clk_get_rate(host->clk); 642 host->mclk = clk_get_rate(host->clk);
617 /* 643 /*
618 * According to the spec, mclk is max 100 MHz, 644 * According to the spec, mclk is max 100 MHz,
@@ -673,6 +699,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
673 if (host->vcc == NULL) 699 if (host->vcc == NULL)
674 mmc->ocr_avail = plat->ocr_mask; 700 mmc->ocr_avail = plat->ocr_mask;
675 mmc->caps = plat->capabilities; 701 mmc->caps = plat->capabilities;
702 mmc->caps |= MMC_CAP_NEEDS_POLL;
676 703
677 /* 704 /*
678 * We can do SGIO 705 * We can do SGIO
@@ -681,10 +708,11 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
681 mmc->max_phys_segs = NR_SG; 708 mmc->max_phys_segs = NR_SG;
682 709
683 /* 710 /*
684 * Since we only have a 16-bit data length register, we must 711 * Since only a certain number of bits are valid in the data length
685 * ensure that we don't exceed 2^16-1 bytes in a single request. 712 * register, we must ensure that we don't exceed 2^num-1 bytes in a
713 * single request.
686 */ 714 */
687 mmc->max_req_size = 65535; 715 mmc->max_req_size = (1 << variant->datalength_bits) - 1;
688 716
689 /* 717 /*
690 * Set the maximum segment size. Since we aren't doing DMA 718 * Set the maximum segment size. Since we aren't doing DMA
@@ -738,7 +766,6 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
738 writel(MCI_IRQENABLE, host->base + MMCIMASK0); 766 writel(MCI_IRQENABLE, host->base + MMCIMASK0);
739 767
740 amba_set_drvdata(dev, mmc); 768 amba_set_drvdata(dev, mmc);
741 host->oldstat = mmci_get_cd(host->mmc);
742 769
743 mmc_add_host(mmc); 770 mmc_add_host(mmc);
744 771
@@ -746,12 +773,6 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
746 mmc_hostname(mmc), amba_rev(dev), amba_config(dev), 773 mmc_hostname(mmc), amba_rev(dev), amba_config(dev),
747 (unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]); 774 (unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]);
748 775
749 init_timer(&host->timer);
750 host->timer.data = (unsigned long)host;
751 host->timer.function = mmci_check_status;
752 host->timer.expires = jiffies + HZ;
753 add_timer(&host->timer);
754
755 return 0; 776 return 0;
756 777
757 irq0_free: 778 irq0_free:
@@ -785,8 +806,6 @@ static int __devexit mmci_remove(struct amba_device *dev)
785 if (mmc) { 806 if (mmc) {
786 struct mmci_host *host = mmc_priv(mmc); 807 struct mmci_host *host = mmc_priv(mmc);
787 808
788 del_timer_sync(&host->timer);
789
790 mmc_remove_host(mmc); 809 mmc_remove_host(mmc);
791 810
792 writel(0, host->base + MMCIMASK0); 811 writel(0, host->base + MMCIMASK0);
@@ -860,19 +879,28 @@ static struct amba_id mmci_ids[] = {
860 { 879 {
861 .id = 0x00041180, 880 .id = 0x00041180,
862 .mask = 0x000fffff, 881 .mask = 0x000fffff,
882 .data = &variant_arm,
863 }, 883 },
864 { 884 {
865 .id = 0x00041181, 885 .id = 0x00041181,
866 .mask = 0x000fffff, 886 .mask = 0x000fffff,
887 .data = &variant_arm,
867 }, 888 },
868 /* ST Micro variants */ 889 /* ST Micro variants */
869 { 890 {
870 .id = 0x00180180, 891 .id = 0x00180180,
871 .mask = 0x00ffffff, 892 .mask = 0x00ffffff,
893 .data = &variant_u300,
872 }, 894 },
873 { 895 {
874 .id = 0x00280180, 896 .id = 0x00280180,
875 .mask = 0x00ffffff, 897 .mask = 0x00ffffff,
898 .data = &variant_u300,
899 },
900 {
901 .id = 0x00480180,
902 .mask = 0x00ffffff,
903 .data = &variant_ux500,
876 }, 904 },
877 { 0, 0 }, 905 { 0, 0 },
878}; 906};
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index d77062e5e3af..68970cfb81e1 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -28,8 +28,6 @@
28#define MCI_4BIT_BUS (1 << 11) 28#define MCI_4BIT_BUS (1 << 11)
29/* 8bit wide buses supported in ST Micro versions */ 29/* 8bit wide buses supported in ST Micro versions */
30#define MCI_ST_8BIT_BUS (1 << 12) 30#define MCI_ST_8BIT_BUS (1 << 12)
31/* HW flow control on the ST Micro version */
32#define MCI_ST_FCEN (1 << 13)
33 31
34#define MMCIARGUMENT 0x008 32#define MMCIARGUMENT 0x008
35#define MMCICOMMAND 0x00c 33#define MMCICOMMAND 0x00c
@@ -145,6 +143,7 @@
145#define NR_SG 16 143#define NR_SG 16
146 144
147struct clk; 145struct clk;
146struct variant_data;
148 147
149struct mmci_host { 148struct mmci_host {
150 void __iomem *base; 149 void __iomem *base;
@@ -164,6 +163,7 @@ struct mmci_host {
164 unsigned int cclk; 163 unsigned int cclk;
165 u32 pwr; 164 u32 pwr;
166 struct mmci_platform_data *plat; 165 struct mmci_platform_data *plat;
166 struct variant_data *variant;
167 167
168 u8 hw_designer; 168 u8 hw_designer;
169 u8 hw_revision:4; 169 u8 hw_revision:4;
@@ -171,42 +171,9 @@ struct mmci_host {
171 struct timer_list timer; 171 struct timer_list timer;
172 unsigned int oldstat; 172 unsigned int oldstat;
173 173
174 unsigned int sg_len;
175
176 /* pio stuff */ 174 /* pio stuff */
177 struct scatterlist *sg_ptr; 175 struct sg_mapping_iter sg_miter;
178 unsigned int sg_off;
179 unsigned int size; 176 unsigned int size;
180 struct regulator *vcc; 177 struct regulator *vcc;
181}; 178};
182 179
183static inline void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
184{
185 /*
186 * Ideally, we want the higher levels to pass us a scatter list.
187 */
188 host->sg_len = data->sg_len;
189 host->sg_ptr = data->sg;
190 host->sg_off = 0;
191}
192
193static inline int mmci_next_sg(struct mmci_host *host)
194{
195 host->sg_ptr++;
196 host->sg_off = 0;
197 return --host->sg_len;
198}
199
200static inline char *mmci_kmap_atomic(struct mmci_host *host, unsigned long *flags)
201{
202 struct scatterlist *sg = host->sg_ptr;
203
204 local_irq_save(*flags);
205 return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
206}
207
208static inline void mmci_kunmap_atomic(struct mmci_host *host, void *buffer, unsigned long *flags)
209{
210 kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
211 local_irq_restore(*flags);
212}
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index d9d4a72e0ec7..350f78e86245 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -119,6 +119,7 @@ struct mxcmci_host {
119 int detect_irq; 119 int detect_irq;
120 int dma; 120 int dma;
121 int do_dma; 121 int do_dma;
122 int default_irq_mask;
122 int use_sdio; 123 int use_sdio;
123 unsigned int power_mode; 124 unsigned int power_mode;
124 struct imxmmc_platform_data *pdata; 125 struct imxmmc_platform_data *pdata;
@@ -228,7 +229,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
228static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd, 229static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
229 unsigned int cmdat) 230 unsigned int cmdat)
230{ 231{
231 u32 int_cntr; 232 u32 int_cntr = host->default_irq_mask;
232 unsigned long flags; 233 unsigned long flags;
233 234
234 WARN_ON(host->cmd != NULL); 235 WARN_ON(host->cmd != NULL);
@@ -275,7 +276,7 @@ static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
275static void mxcmci_finish_request(struct mxcmci_host *host, 276static void mxcmci_finish_request(struct mxcmci_host *host,
276 struct mmc_request *req) 277 struct mmc_request *req)
277{ 278{
278 u32 int_cntr = 0; 279 u32 int_cntr = host->default_irq_mask;
279 unsigned long flags; 280 unsigned long flags;
280 281
281 spin_lock_irqsave(&host->lock, flags); 282 spin_lock_irqsave(&host->lock, flags);
@@ -585,6 +586,9 @@ static irqreturn_t mxcmci_irq(int irq, void *devid)
585 (stat & (STATUS_DATA_TRANS_DONE | STATUS_WRITE_OP_DONE))) 586 (stat & (STATUS_DATA_TRANS_DONE | STATUS_WRITE_OP_DONE)))
586 mxcmci_data_done(host, stat); 587 mxcmci_data_done(host, stat);
587#endif 588#endif
589 if (host->default_irq_mask &&
590 (stat & (STATUS_CARD_INSERTION | STATUS_CARD_REMOVAL)))
591 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
588 return IRQ_HANDLED; 592 return IRQ_HANDLED;
589} 593}
590 594
@@ -809,6 +813,12 @@ static int mxcmci_probe(struct platform_device *pdev)
809 else 813 else
810 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; 814 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
811 815
816 if (host->pdata && host->pdata->dat3_card_detect)
817 host->default_irq_mask =
818 INT_CARD_INSERTION_EN | INT_CARD_REMOVAL_EN;
819 else
820 host->default_irq_mask = 0;
821
812 host->res = r; 822 host->res = r;
813 host->irq = irq; 823 host->irq = irq;
814 824
@@ -835,7 +845,7 @@ static int mxcmci_probe(struct platform_device *pdev)
835 /* recommended in data sheet */ 845 /* recommended in data sheet */
836 writew(0x2db4, host->base + MMC_REG_READ_TO); 846 writew(0x2db4, host->base + MMC_REG_READ_TO);
837 847
838 writel(0, host->base + MMC_REG_INT_CNTR); 848 writel(host->default_irq_mask, host->base + MMC_REG_INT_CNTR);
839 849
840#ifdef HAS_DMA 850#ifdef HAS_DMA
841 host->dma = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_LOW); 851 host->dma = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_LOW);
@@ -926,43 +936,47 @@ static int mxcmci_remove(struct platform_device *pdev)
926} 936}
927 937
928#ifdef CONFIG_PM 938#ifdef CONFIG_PM
929static int mxcmci_suspend(struct platform_device *dev, pm_message_t state) 939static int mxcmci_suspend(struct device *dev)
930{ 940{
931 struct mmc_host *mmc = platform_get_drvdata(dev); 941 struct mmc_host *mmc = dev_get_drvdata(dev);
942 struct mxcmci_host *host = mmc_priv(mmc);
932 int ret = 0; 943 int ret = 0;
933 944
934 if (mmc) 945 if (mmc)
935 ret = mmc_suspend_host(mmc); 946 ret = mmc_suspend_host(mmc);
947 clk_disable(host->clk);
936 948
937 return ret; 949 return ret;
938} 950}
939 951
940static int mxcmci_resume(struct platform_device *dev) 952static int mxcmci_resume(struct device *dev)
941{ 953{
942 struct mmc_host *mmc = platform_get_drvdata(dev); 954 struct mmc_host *mmc = dev_get_drvdata(dev);
943 struct mxcmci_host *host; 955 struct mxcmci_host *host = mmc_priv(mmc);
944 int ret = 0; 956 int ret = 0;
945 957
946 if (mmc) { 958 clk_enable(host->clk);
947 host = mmc_priv(mmc); 959 if (mmc)
948 ret = mmc_resume_host(mmc); 960 ret = mmc_resume_host(mmc);
949 }
950 961
951 return ret; 962 return ret;
952} 963}
953#else 964
954#define mxcmci_suspend NULL 965static const struct dev_pm_ops mxcmci_pm_ops = {
955#define mxcmci_resume NULL 966 .suspend = mxcmci_suspend,
956#endif /* CONFIG_PM */ 967 .resume = mxcmci_resume,
968};
969#endif
957 970
958static struct platform_driver mxcmci_driver = { 971static struct platform_driver mxcmci_driver = {
959 .probe = mxcmci_probe, 972 .probe = mxcmci_probe,
960 .remove = mxcmci_remove, 973 .remove = mxcmci_remove,
961 .suspend = mxcmci_suspend,
962 .resume = mxcmci_resume,
963 .driver = { 974 .driver = {
964 .name = DRIVER_NAME, 975 .name = DRIVER_NAME,
965 .owner = THIS_MODULE, 976 .owner = THIS_MODULE,
977#ifdef CONFIG_PM
978 .pm = &mxcmci_pm_ops,
979#endif
966 } 980 }
967}; 981};
968 982
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 82e94389824e..0d76b169482f 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -623,8 +623,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
623 else 623 else
624 host->buf_start = column + mtd->writesize; 624 host->buf_start = column + mtd->writesize;
625 625
626 if (mtd->writesize > 512) 626 command = NAND_CMD_READ0; /* only READ0 is valid */
627 command = NAND_CMD_READ0; /* only READ0 is valid */
628 627
629 send_cmd(host, command, false); 628 send_cmd(host, command, false);
630 mxc_do_addr_cycle(mtd, column, page_addr); 629 mxc_do_addr_cycle(mtd, column, page_addr);
@@ -639,31 +638,11 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
639 break; 638 break;
640 639
641 case NAND_CMD_SEQIN: 640 case NAND_CMD_SEQIN:
642 if (column >= mtd->writesize) { 641 if (column >= mtd->writesize)
643 /* 642 /* call ourself to read a page */
644 * FIXME: before send SEQIN command for write OOB, 643 mxc_nand_command(mtd, NAND_CMD_READ0, 0, page_addr);
645 * We must read one page out.
646 * For K9F1GXX has no READ1 command to set current HW
647 * pointer to spare area, we must write the whole page
648 * including OOB together.
649 */
650 if (mtd->writesize > 512)
651 /* call ourself to read a page */
652 mxc_nand_command(mtd, NAND_CMD_READ0, 0,
653 page_addr);
654
655 host->buf_start = column;
656
657 /* Set program pointer to spare region */
658 if (mtd->writesize == 512)
659 send_cmd(host, NAND_CMD_READOOB, false);
660 } else {
661 host->buf_start = column;
662 644
663 /* Set program pointer to page start */ 645 host->buf_start = column;
664 if (mtd->writesize == 512)
665 send_cmd(host, NAND_CMD_READ0, false);
666 }
667 646
668 send_cmd(host, command, false); 647 send_cmd(host, command, false);
669 mxc_do_addr_cycle(mtd, column, page_addr); 648 mxc_do_addr_cycle(mtd, column, page_addr);
@@ -853,6 +832,8 @@ static int __init mxcnd_probe(struct platform_device *pdev)
853 parse_mtd_partitions(mtd, part_probes, &host->parts, 0); 832 parse_mtd_partitions(mtd, part_probes, &host->parts, 0);
854 if (nr_parts > 0) 833 if (nr_parts > 0)
855 add_mtd_partitions(mtd, host->parts, nr_parts); 834 add_mtd_partitions(mtd, host->parts, nr_parts);
835 else if (pdata->parts)
836 add_mtd_partitions(mtd, pdata->parts, pdata->nr_parts);
856 else 837 else
857#endif 838#endif
858 { 839 {
diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 78b74e83ce5d..5a1bd5db2a93 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -29,6 +29,7 @@
29#include <linux/mii.h> 29#include <linux/mii.h>
30#include <linux/ethtool.h> 30#include <linux/ethtool.h>
31#include <linux/phy.h> 31#include <linux/phy.h>
32#include <linux/marvell_phy.h>
32 33
33#include <asm/io.h> 34#include <asm/io.h>
34#include <asm/irq.h> 35#include <asm/irq.h>
@@ -48,8 +49,6 @@
48#define MII_M1145_RGMII_RX_DELAY 0x0080 49#define MII_M1145_RGMII_RX_DELAY 0x0080
49#define MII_M1145_RGMII_TX_DELAY 0x0002 50#define MII_M1145_RGMII_TX_DELAY 0x0002
50 51
51#define M1145_DEV_FLAGS_RESISTANCE 0x00000001
52
53#define MII_M1111_PHY_LED_CONTROL 0x18 52#define MII_M1111_PHY_LED_CONTROL 0x18
54#define MII_M1111_PHY_LED_DIRECT 0x4100 53#define MII_M1111_PHY_LED_DIRECT 0x4100
55#define MII_M1111_PHY_LED_COMBINE 0x411c 54#define MII_M1111_PHY_LED_COMBINE 0x411c
@@ -350,7 +349,10 @@ static int m88e1118_config_init(struct phy_device *phydev)
350 return err; 349 return err;
351 350
352 /* Adjust LED Control */ 351 /* Adjust LED Control */
353 err = phy_write(phydev, 0x10, 0x021e); 352 if (phydev->dev_flags & MARVELL_PHY_M1118_DNS323_LEDS)
353 err = phy_write(phydev, 0x10, 0x1100);
354 else
355 err = phy_write(phydev, 0x10, 0x021e);
354 if (err < 0) 356 if (err < 0)
355 return err; 357 return err;
356 358
@@ -398,7 +400,7 @@ static int m88e1145_config_init(struct phy_device *phydev)
398 if (err < 0) 400 if (err < 0)
399 return err; 401 return err;
400 402
401 if (phydev->dev_flags & M1145_DEV_FLAGS_RESISTANCE) { 403 if (phydev->dev_flags & MARVELL_PHY_M1145_FLAGS_RESISTANCE) {
402 err = phy_write(phydev, 0x1d, 0x0012); 404 err = phy_write(phydev, 0x1d, 0x0012);
403 if (err < 0) 405 if (err < 0)
404 return err; 406 return err;
@@ -529,8 +531,8 @@ static int m88e1121_did_interrupt(struct phy_device *phydev)
529 531
530static struct phy_driver marvell_drivers[] = { 532static struct phy_driver marvell_drivers[] = {
531 { 533 {
532 .phy_id = 0x01410c60, 534 .phy_id = MARVELL_PHY_ID_88E1101,
533 .phy_id_mask = 0xfffffff0, 535 .phy_id_mask = MARVELL_PHY_ID_MASK,
534 .name = "Marvell 88E1101", 536 .name = "Marvell 88E1101",
535 .features = PHY_GBIT_FEATURES, 537 .features = PHY_GBIT_FEATURES,
536 .flags = PHY_HAS_INTERRUPT, 538 .flags = PHY_HAS_INTERRUPT,
@@ -541,8 +543,8 @@ static struct phy_driver marvell_drivers[] = {
541 .driver = { .owner = THIS_MODULE }, 543 .driver = { .owner = THIS_MODULE },
542 }, 544 },
543 { 545 {
544 .phy_id = 0x01410c90, 546 .phy_id = MARVELL_PHY_ID_88E1112,
545 .phy_id_mask = 0xfffffff0, 547 .phy_id_mask = MARVELL_PHY_ID_MASK,
546 .name = "Marvell 88E1112", 548 .name = "Marvell 88E1112",
547 .features = PHY_GBIT_FEATURES, 549 .features = PHY_GBIT_FEATURES,
548 .flags = PHY_HAS_INTERRUPT, 550 .flags = PHY_HAS_INTERRUPT,
@@ -554,8 +556,8 @@ static struct phy_driver marvell_drivers[] = {
554 .driver = { .owner = THIS_MODULE }, 556 .driver = { .owner = THIS_MODULE },
555 }, 557 },
556 { 558 {
557 .phy_id = 0x01410cc0, 559 .phy_id = MARVELL_PHY_ID_88E1111,
558 .phy_id_mask = 0xfffffff0, 560 .phy_id_mask = MARVELL_PHY_ID_MASK,
559 .name = "Marvell 88E1111", 561 .name = "Marvell 88E1111",
560 .features = PHY_GBIT_FEATURES, 562 .features = PHY_GBIT_FEATURES,
561 .flags = PHY_HAS_INTERRUPT, 563 .flags = PHY_HAS_INTERRUPT,
@@ -567,8 +569,8 @@ static struct phy_driver marvell_drivers[] = {
567 .driver = { .owner = THIS_MODULE }, 569 .driver = { .owner = THIS_MODULE },
568 }, 570 },
569 { 571 {
570 .phy_id = 0x01410e10, 572 .phy_id = MARVELL_PHY_ID_88E1118,
571 .phy_id_mask = 0xfffffff0, 573 .phy_id_mask = MARVELL_PHY_ID_MASK,
572 .name = "Marvell 88E1118", 574 .name = "Marvell 88E1118",
573 .features = PHY_GBIT_FEATURES, 575 .features = PHY_GBIT_FEATURES,
574 .flags = PHY_HAS_INTERRUPT, 576 .flags = PHY_HAS_INTERRUPT,
@@ -580,8 +582,8 @@ static struct phy_driver marvell_drivers[] = {
580 .driver = {.owner = THIS_MODULE,}, 582 .driver = {.owner = THIS_MODULE,},
581 }, 583 },
582 { 584 {
583 .phy_id = 0x01410cb0, 585 .phy_id = MARVELL_PHY_ID_88E1121R,
584 .phy_id_mask = 0xfffffff0, 586 .phy_id_mask = MARVELL_PHY_ID_MASK,
585 .name = "Marvell 88E1121R", 587 .name = "Marvell 88E1121R",
586 .features = PHY_GBIT_FEATURES, 588 .features = PHY_GBIT_FEATURES,
587 .flags = PHY_HAS_INTERRUPT, 589 .flags = PHY_HAS_INTERRUPT,
@@ -593,8 +595,8 @@ static struct phy_driver marvell_drivers[] = {
593 .driver = { .owner = THIS_MODULE }, 595 .driver = { .owner = THIS_MODULE },
594 }, 596 },
595 { 597 {
596 .phy_id = 0x01410cd0, 598 .phy_id = MARVELL_PHY_ID_88E1145,
597 .phy_id_mask = 0xfffffff0, 599 .phy_id_mask = MARVELL_PHY_ID_MASK,
598 .name = "Marvell 88E1145", 600 .name = "Marvell 88E1145",
599 .features = PHY_GBIT_FEATURES, 601 .features = PHY_GBIT_FEATURES,
600 .flags = PHY_HAS_INTERRUPT, 602 .flags = PHY_HAS_INTERRUPT,
@@ -606,8 +608,8 @@ static struct phy_driver marvell_drivers[] = {
606 .driver = { .owner = THIS_MODULE }, 608 .driver = { .owner = THIS_MODULE },
607 }, 609 },
608 { 610 {
609 .phy_id = 0x01410e30, 611 .phy_id = MARVELL_PHY_ID_88E1240,
610 .phy_id_mask = 0xfffffff0, 612 .phy_id_mask = MARVELL_PHY_ID_MASK,
611 .name = "Marvell 88E1240", 613 .name = "Marvell 88E1240",
612 .features = PHY_GBIT_FEATURES, 614 .features = PHY_GBIT_FEATURES,
613 .flags = PHY_HAS_INTERRUPT, 615 .flags = PHY_HAS_INTERRUPT,
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 188bc8496a26..d02be78a4138 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -176,16 +176,18 @@ static ssize_t led_proc_write(struct file *file, const char *buf,
176 size_t count, loff_t *pos) 176 size_t count, loff_t *pos)
177{ 177{
178 void *data = PDE(file->f_path.dentry->d_inode)->data; 178 void *data = PDE(file->f_path.dentry->d_inode)->data;
179 char *cur, lbuf[count + 1]; 179 char *cur, lbuf[32];
180 int d; 180 int d;
181 181
182 if (!capable(CAP_SYS_ADMIN)) 182 if (!capable(CAP_SYS_ADMIN))
183 return -EACCES; 183 return -EACCES;
184 184
185 memset(lbuf, 0, count + 1); 185 if (count >= sizeof(lbuf))
186 count = sizeof(lbuf)-1;
186 187
187 if (copy_from_user(lbuf, buf, count)) 188 if (copy_from_user(lbuf, buf, count))
188 return -EFAULT; 189 return -EFAULT;
190 lbuf[count] = 0;
189 191
190 cur = lbuf; 192 cur = lbuf;
191 193
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 3587d9922f28..71bbefc3544e 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -456,7 +456,7 @@ static struct rtc_class_ops stv2_pl031_ops = {
456 .irq_set_freq = pl031_irq_set_freq, 456 .irq_set_freq = pl031_irq_set_freq,
457}; 457};
458 458
459static struct amba_id pl031_ids[] __initdata = { 459static struct amba_id pl031_ids[] = {
460 { 460 {
461 .id = 0x00041031, 461 .id = 0x00041031,
462 .mask = 0x000fffff, 462 .mask = 0x000fffff,
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index b09a638d051f..50441ffe8e38 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -782,7 +782,7 @@ static int pl010_resume(struct amba_device *dev)
782 return 0; 782 return 0;
783} 783}
784 784
785static struct amba_id pl010_ids[] __initdata = { 785static struct amba_id pl010_ids[] = {
786 { 786 {
787 .id = 0x00041010, 787 .id = 0x00041010,
788 .mask = 0x000fffff, 788 .mask = 0x000fffff,
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index eb4cb480b93e..6ca7a44f29c2 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -69,9 +69,12 @@
69struct uart_amba_port { 69struct uart_amba_port {
70 struct uart_port port; 70 struct uart_port port;
71 struct clk *clk; 71 struct clk *clk;
72 unsigned int im; /* interrupt mask */ 72 unsigned int im; /* interrupt mask */
73 unsigned int old_status; 73 unsigned int old_status;
74 unsigned int ifls; /* vendor-specific */ 74 unsigned int ifls; /* vendor-specific */
75 unsigned int lcrh_tx; /* vendor-specific */
76 unsigned int lcrh_rx; /* vendor-specific */
77 bool oversampling; /* vendor-specific */
75 bool autorts; 78 bool autorts;
76}; 79};
77 80
@@ -79,16 +82,25 @@ struct uart_amba_port {
79struct vendor_data { 82struct vendor_data {
80 unsigned int ifls; 83 unsigned int ifls;
81 unsigned int fifosize; 84 unsigned int fifosize;
85 unsigned int lcrh_tx;
86 unsigned int lcrh_rx;
87 bool oversampling;
82}; 88};
83 89
84static struct vendor_data vendor_arm = { 90static struct vendor_data vendor_arm = {
85 .ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8, 91 .ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8,
86 .fifosize = 16, 92 .fifosize = 16,
93 .lcrh_tx = UART011_LCRH,
94 .lcrh_rx = UART011_LCRH,
95 .oversampling = false,
87}; 96};
88 97
89static struct vendor_data vendor_st = { 98static struct vendor_data vendor_st = {
90 .ifls = UART011_IFLS_RX_HALF|UART011_IFLS_TX_HALF, 99 .ifls = UART011_IFLS_RX_HALF|UART011_IFLS_TX_HALF,
91 .fifosize = 64, 100 .fifosize = 64,
101 .lcrh_tx = ST_UART011_LCRH_TX,
102 .lcrh_rx = ST_UART011_LCRH_RX,
103 .oversampling = true,
92}; 104};
93 105
94static void pl011_stop_tx(struct uart_port *port) 106static void pl011_stop_tx(struct uart_port *port)
@@ -327,12 +339,12 @@ static void pl011_break_ctl(struct uart_port *port, int break_state)
327 unsigned int lcr_h; 339 unsigned int lcr_h;
328 340
329 spin_lock_irqsave(&uap->port.lock, flags); 341 spin_lock_irqsave(&uap->port.lock, flags);
330 lcr_h = readw(uap->port.membase + UART011_LCRH); 342 lcr_h = readw(uap->port.membase + uap->lcrh_tx);
331 if (break_state == -1) 343 if (break_state == -1)
332 lcr_h |= UART01x_LCRH_BRK; 344 lcr_h |= UART01x_LCRH_BRK;
333 else 345 else
334 lcr_h &= ~UART01x_LCRH_BRK; 346 lcr_h &= ~UART01x_LCRH_BRK;
335 writew(lcr_h, uap->port.membase + UART011_LCRH); 347 writew(lcr_h, uap->port.membase + uap->lcrh_tx);
336 spin_unlock_irqrestore(&uap->port.lock, flags); 348 spin_unlock_irqrestore(&uap->port.lock, flags);
337} 349}
338 350
@@ -393,7 +405,17 @@ static int pl011_startup(struct uart_port *port)
393 writew(cr, uap->port.membase + UART011_CR); 405 writew(cr, uap->port.membase + UART011_CR);
394 writew(0, uap->port.membase + UART011_FBRD); 406 writew(0, uap->port.membase + UART011_FBRD);
395 writew(1, uap->port.membase + UART011_IBRD); 407 writew(1, uap->port.membase + UART011_IBRD);
396 writew(0, uap->port.membase + UART011_LCRH); 408 writew(0, uap->port.membase + uap->lcrh_rx);
409 if (uap->lcrh_tx != uap->lcrh_rx) {
410 int i;
411 /*
412 * Wait 10 PCLKs before writing LCRH_TX register,
413 * to get this delay write read only register 10 times
414 */
415 for (i = 0; i < 10; ++i)
416 writew(0xff, uap->port.membase + UART011_MIS);
417 writew(0, uap->port.membase + uap->lcrh_tx);
418 }
397 writew(0, uap->port.membase + UART01x_DR); 419 writew(0, uap->port.membase + UART01x_DR);
398 while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY) 420 while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
399 barrier(); 421 barrier();
@@ -422,10 +444,19 @@ static int pl011_startup(struct uart_port *port)
422 return retval; 444 return retval;
423} 445}
424 446
447static void pl011_shutdown_channel(struct uart_amba_port *uap,
448 unsigned int lcrh)
449{
450 unsigned long val;
451
452 val = readw(uap->port.membase + lcrh);
453 val &= ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN);
454 writew(val, uap->port.membase + lcrh);
455}
456
425static void pl011_shutdown(struct uart_port *port) 457static void pl011_shutdown(struct uart_port *port)
426{ 458{
427 struct uart_amba_port *uap = (struct uart_amba_port *)port; 459 struct uart_amba_port *uap = (struct uart_amba_port *)port;
428 unsigned long val;
429 460
430 /* 461 /*
431 * disable all interrupts 462 * disable all interrupts
@@ -450,9 +481,9 @@ static void pl011_shutdown(struct uart_port *port)
450 /* 481 /*
451 * disable break condition and fifos 482 * disable break condition and fifos
452 */ 483 */
453 val = readw(uap->port.membase + UART011_LCRH); 484 pl011_shutdown_channel(uap, uap->lcrh_rx);
454 val &= ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN); 485 if (uap->lcrh_rx != uap->lcrh_tx)
455 writew(val, uap->port.membase + UART011_LCRH); 486 pl011_shutdown_channel(uap, uap->lcrh_tx);
456 487
457 /* 488 /*
458 * Shut down the clock producer 489 * Shut down the clock producer
@@ -472,8 +503,13 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
472 /* 503 /*
473 * Ask the core to calculate the divisor for us. 504 * Ask the core to calculate the divisor for us.
474 */ 505 */
475 baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); 506 baud = uart_get_baud_rate(port, termios, old, 0,
476 quot = port->uartclk * 4 / baud; 507 port->uartclk/(uap->oversampling ? 8 : 16));
508
509 if (baud > port->uartclk/16)
510 quot = DIV_ROUND_CLOSEST(port->uartclk * 8, baud);
511 else
512 quot = DIV_ROUND_CLOSEST(port->uartclk * 4, baud);
477 513
478 switch (termios->c_cflag & CSIZE) { 514 switch (termios->c_cflag & CSIZE) {
479 case CS5: 515 case CS5:
@@ -552,6 +588,13 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
552 uap->autorts = false; 588 uap->autorts = false;
553 } 589 }
554 590
591 if (uap->oversampling) {
592 if (baud > port->uartclk/16)
593 old_cr |= ST_UART011_CR_OVSFACT;
594 else
595 old_cr &= ~ST_UART011_CR_OVSFACT;
596 }
597
555 /* Set baud rate */ 598 /* Set baud rate */
556 writew(quot & 0x3f, port->membase + UART011_FBRD); 599 writew(quot & 0x3f, port->membase + UART011_FBRD);
557 writew(quot >> 6, port->membase + UART011_IBRD); 600 writew(quot >> 6, port->membase + UART011_IBRD);
@@ -561,7 +604,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
561 * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L 604 * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
562 * ----------^----------^----------^----------^----- 605 * ----------^----------^----------^----------^-----
563 */ 606 */
564 writew(lcr_h, port->membase + UART011_LCRH); 607 writew(lcr_h, port->membase + uap->lcrh_rx);
608 if (uap->lcrh_rx != uap->lcrh_tx) {
609 int i;
610 /*
611 * Wait 10 PCLKs before writing LCRH_TX register,
612 * to get this delay write read only register 10 times
613 */
614 for (i = 0; i < 10; ++i)
615 writew(0xff, uap->port.membase + UART011_MIS);
616 writew(lcr_h, port->membase + uap->lcrh_tx);
617 }
565 writew(old_cr, port->membase + UART011_CR); 618 writew(old_cr, port->membase + UART011_CR);
566 619
567 spin_unlock_irqrestore(&port->lock, flags); 620 spin_unlock_irqrestore(&port->lock, flags);
@@ -688,7 +741,7 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud,
688 if (readw(uap->port.membase + UART011_CR) & UART01x_CR_UARTEN) { 741 if (readw(uap->port.membase + UART011_CR) & UART01x_CR_UARTEN) {
689 unsigned int lcr_h, ibrd, fbrd; 742 unsigned int lcr_h, ibrd, fbrd;
690 743
691 lcr_h = readw(uap->port.membase + UART011_LCRH); 744 lcr_h = readw(uap->port.membase + uap->lcrh_tx);
692 745
693 *parity = 'n'; 746 *parity = 'n';
694 if (lcr_h & UART01x_LCRH_PEN) { 747 if (lcr_h & UART01x_LCRH_PEN) {
@@ -707,6 +760,12 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud,
707 fbrd = readw(uap->port.membase + UART011_FBRD); 760 fbrd = readw(uap->port.membase + UART011_FBRD);
708 761
709 *baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd); 762 *baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd);
763
764 if (uap->oversampling) {
765 if (readw(uap->port.membase + UART011_CR)
766 & ST_UART011_CR_OVSFACT)
767 *baud *= 2;
768 }
710 } 769 }
711} 770}
712 771
@@ -800,6 +859,9 @@ static int pl011_probe(struct amba_device *dev, struct amba_id *id)
800 } 859 }
801 860
802 uap->ifls = vendor->ifls; 861 uap->ifls = vendor->ifls;
862 uap->lcrh_rx = vendor->lcrh_rx;
863 uap->lcrh_tx = vendor->lcrh_tx;
864 uap->oversampling = vendor->oversampling;
803 uap->port.dev = &dev->dev; 865 uap->port.dev = &dev->dev;
804 uap->port.mapbase = dev->res.start; 866 uap->port.mapbase = dev->res.start;
805 uap->port.membase = base; 867 uap->port.membase = base;
@@ -868,7 +930,7 @@ static int pl011_resume(struct amba_device *dev)
868} 930}
869#endif 931#endif
870 932
871static struct amba_id pl011_ids[] __initdata = { 933static struct amba_id pl011_ids[] = {
872 { 934 {
873 .id = 0x00041011, 935 .id = 0x00041011,
874 .mask = 0x000fffff, 936 .mask = 0x000fffff,
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index eaa79c8a9b8c..93ead19507b6 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -76,11 +76,12 @@
76static const char driver_name [] = "at91_udc"; 76static const char driver_name [] = "at91_udc";
77static const char ep0name[] = "ep0"; 77static const char ep0name[] = "ep0";
78 78
79#define VBUS_POLL_TIMEOUT msecs_to_jiffies(1000)
79 80
80#define at91_udp_read(dev, reg) \ 81#define at91_udp_read(udc, reg) \
81 __raw_readl((dev)->udp_baseaddr + (reg)) 82 __raw_readl((udc)->udp_baseaddr + (reg))
82#define at91_udp_write(dev, reg, val) \ 83#define at91_udp_write(udc, reg, val) \
83 __raw_writel((val), (dev)->udp_baseaddr + (reg)) 84 __raw_writel((val), (udc)->udp_baseaddr + (reg))
84 85
85/*-------------------------------------------------------------------------*/ 86/*-------------------------------------------------------------------------*/
86 87
@@ -102,8 +103,9 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep)
102 u32 csr; 103 u32 csr;
103 struct at91_request *req; 104 struct at91_request *req;
104 unsigned long flags; 105 unsigned long flags;
106 struct at91_udc *udc = ep->udc;
105 107
106 local_irq_save(flags); 108 spin_lock_irqsave(&udc->lock, flags);
107 109
108 csr = __raw_readl(ep->creg); 110 csr = __raw_readl(ep->creg);
109 111
@@ -147,7 +149,7 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep)
147 &req->req, length, 149 &req->req, length,
148 req->req.length, req->req.buf); 150 req->req.length, req->req.buf);
149 } 151 }
150 local_irq_restore(flags); 152 spin_unlock_irqrestore(&udc->lock, flags);
151} 153}
152 154
153static void proc_irq_show(struct seq_file *s, const char *label, u32 mask) 155static void proc_irq_show(struct seq_file *s, const char *label, u32 mask)
@@ -272,7 +274,9 @@ static void done(struct at91_ep *ep, struct at91_request *req, int status)
272 VDBG("%s done %p, status %d\n", ep->ep.name, req, status); 274 VDBG("%s done %p, status %d\n", ep->ep.name, req, status);
273 275
274 ep->stopped = 1; 276 ep->stopped = 1;
277 spin_unlock(&udc->lock);
275 req->req.complete(&ep->ep, &req->req); 278 req->req.complete(&ep->ep, &req->req);
279 spin_lock(&udc->lock);
276 ep->stopped = stopped; 280 ep->stopped = stopped;
277 281
278 /* ep0 is always ready; other endpoints need a non-empty queue */ 282 /* ep0 is always ready; other endpoints need a non-empty queue */
@@ -472,7 +476,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
472 const struct usb_endpoint_descriptor *desc) 476 const struct usb_endpoint_descriptor *desc)
473{ 477{
474 struct at91_ep *ep = container_of(_ep, struct at91_ep, ep); 478 struct at91_ep *ep = container_of(_ep, struct at91_ep, ep);
475 struct at91_udc *dev = ep->udc; 479 struct at91_udc *udc = ep->udc;
476 u16 maxpacket; 480 u16 maxpacket;
477 u32 tmp; 481 u32 tmp;
478 unsigned long flags; 482 unsigned long flags;
@@ -487,7 +491,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
487 return -EINVAL; 491 return -EINVAL;
488 } 492 }
489 493
490 if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) { 494 if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) {
491 DBG("bogus device state\n"); 495 DBG("bogus device state\n");
492 return -ESHUTDOWN; 496 return -ESHUTDOWN;
493 } 497 }
@@ -521,7 +525,7 @@ bogus_max:
521 } 525 }
522 526
523ok: 527ok:
524 local_irq_save(flags); 528 spin_lock_irqsave(&udc->lock, flags);
525 529
526 /* initialize endpoint to match this descriptor */ 530 /* initialize endpoint to match this descriptor */
527 ep->is_in = usb_endpoint_dir_in(desc); 531 ep->is_in = usb_endpoint_dir_in(desc);
@@ -540,10 +544,10 @@ ok:
540 * reset/init endpoint fifo. NOTE: leaves fifo_bank alone, 544 * reset/init endpoint fifo. NOTE: leaves fifo_bank alone,
541 * since endpoint resets don't reset hw pingpong state. 545 * since endpoint resets don't reset hw pingpong state.
542 */ 546 */
543 at91_udp_write(dev, AT91_UDP_RST_EP, ep->int_mask); 547 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask);
544 at91_udp_write(dev, AT91_UDP_RST_EP, 0); 548 at91_udp_write(udc, AT91_UDP_RST_EP, 0);
545 549
546 local_irq_restore(flags); 550 spin_unlock_irqrestore(&udc->lock, flags);
547 return 0; 551 return 0;
548} 552}
549 553
@@ -556,7 +560,7 @@ static int at91_ep_disable (struct usb_ep * _ep)
556 if (ep == &ep->udc->ep[0]) 560 if (ep == &ep->udc->ep[0])
557 return -EINVAL; 561 return -EINVAL;
558 562
559 local_irq_save(flags); 563 spin_lock_irqsave(&udc->lock, flags);
560 564
561 nuke(ep, -ESHUTDOWN); 565 nuke(ep, -ESHUTDOWN);
562 566
@@ -571,7 +575,7 @@ static int at91_ep_disable (struct usb_ep * _ep)
571 __raw_writel(0, ep->creg); 575 __raw_writel(0, ep->creg);
572 } 576 }
573 577
574 local_irq_restore(flags); 578 spin_unlock_irqrestore(&udc->lock, flags);
575 return 0; 579 return 0;
576} 580}
577 581
@@ -607,7 +611,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
607{ 611{
608 struct at91_request *req; 612 struct at91_request *req;
609 struct at91_ep *ep; 613 struct at91_ep *ep;
610 struct at91_udc *dev; 614 struct at91_udc *udc;
611 int status; 615 int status;
612 unsigned long flags; 616 unsigned long flags;
613 617
@@ -625,9 +629,9 @@ static int at91_ep_queue(struct usb_ep *_ep,
625 return -EINVAL; 629 return -EINVAL;
626 } 630 }
627 631
628 dev = ep->udc; 632 udc = ep->udc;
629 633
630 if (!dev || !dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) { 634 if (!udc || !udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) {
631 DBG("invalid device\n"); 635 DBG("invalid device\n");
632 return -EINVAL; 636 return -EINVAL;
633 } 637 }
@@ -635,7 +639,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
635 _req->status = -EINPROGRESS; 639 _req->status = -EINPROGRESS;
636 _req->actual = 0; 640 _req->actual = 0;
637 641
638 local_irq_save(flags); 642 spin_lock_irqsave(&udc->lock, flags);
639 643
640 /* try to kickstart any empty and idle queue */ 644 /* try to kickstart any empty and idle queue */
641 if (list_empty(&ep->queue) && !ep->stopped) { 645 if (list_empty(&ep->queue) && !ep->stopped) {
@@ -653,7 +657,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
653 if (is_ep0) { 657 if (is_ep0) {
654 u32 tmp; 658 u32 tmp;
655 659
656 if (!dev->req_pending) { 660 if (!udc->req_pending) {
657 status = -EINVAL; 661 status = -EINVAL;
658 goto done; 662 goto done;
659 } 663 }
@@ -662,11 +666,11 @@ static int at91_ep_queue(struct usb_ep *_ep,
662 * defer changing CONFG until after the gadget driver 666 * defer changing CONFG until after the gadget driver
663 * reconfigures the endpoints. 667 * reconfigures the endpoints.
664 */ 668 */
665 if (dev->wait_for_config_ack) { 669 if (udc->wait_for_config_ack) {
666 tmp = at91_udp_read(dev, AT91_UDP_GLB_STAT); 670 tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT);
667 tmp ^= AT91_UDP_CONFG; 671 tmp ^= AT91_UDP_CONFG;
668 VDBG("toggle config\n"); 672 VDBG("toggle config\n");
669 at91_udp_write(dev, AT91_UDP_GLB_STAT, tmp); 673 at91_udp_write(udc, AT91_UDP_GLB_STAT, tmp);
670 } 674 }
671 if (req->req.length == 0) { 675 if (req->req.length == 0) {
672ep0_in_status: 676ep0_in_status:
@@ -676,7 +680,7 @@ ep0_in_status:
676 tmp &= ~SET_FX; 680 tmp &= ~SET_FX;
677 tmp |= CLR_FX | AT91_UDP_TXPKTRDY; 681 tmp |= CLR_FX | AT91_UDP_TXPKTRDY;
678 __raw_writel(tmp, ep->creg); 682 __raw_writel(tmp, ep->creg);
679 dev->req_pending = 0; 683 udc->req_pending = 0;
680 goto done; 684 goto done;
681 } 685 }
682 } 686 }
@@ -695,31 +699,40 @@ ep0_in_status:
695 699
696 if (req && !status) { 700 if (req && !status) {
697 list_add_tail (&req->queue, &ep->queue); 701 list_add_tail (&req->queue, &ep->queue);
698 at91_udp_write(dev, AT91_UDP_IER, ep->int_mask); 702 at91_udp_write(udc, AT91_UDP_IER, ep->int_mask);
699 } 703 }
700done: 704done:
701 local_irq_restore(flags); 705 spin_unlock_irqrestore(&udc->lock, flags);
702 return (status < 0) ? status : 0; 706 return (status < 0) ? status : 0;
703} 707}
704 708
705static int at91_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) 709static int at91_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
706{ 710{
707 struct at91_ep *ep; 711 struct at91_ep *ep;
708 struct at91_request *req; 712 struct at91_request *req;
713 unsigned long flags;
714 struct at91_udc *udc;
709 715
710 ep = container_of(_ep, struct at91_ep, ep); 716 ep = container_of(_ep, struct at91_ep, ep);
711 if (!_ep || ep->ep.name == ep0name) 717 if (!_ep || ep->ep.name == ep0name)
712 return -EINVAL; 718 return -EINVAL;
713 719
720 udc = ep->udc;
721
722 spin_lock_irqsave(&udc->lock, flags);
723
714 /* make sure it's actually queued on this endpoint */ 724 /* make sure it's actually queued on this endpoint */
715 list_for_each_entry (req, &ep->queue, queue) { 725 list_for_each_entry (req, &ep->queue, queue) {
716 if (&req->req == _req) 726 if (&req->req == _req)
717 break; 727 break;
718 } 728 }
719 if (&req->req != _req) 729 if (&req->req != _req) {
730 spin_unlock_irqrestore(&udc->lock, flags);
720 return -EINVAL; 731 return -EINVAL;
732 }
721 733
722 done(ep, req, -ECONNRESET); 734 done(ep, req, -ECONNRESET);
735 spin_unlock_irqrestore(&udc->lock, flags);
723 return 0; 736 return 0;
724} 737}
725 738
@@ -736,7 +749,7 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value)
736 return -EINVAL; 749 return -EINVAL;
737 750
738 creg = ep->creg; 751 creg = ep->creg;
739 local_irq_save(flags); 752 spin_lock_irqsave(&udc->lock, flags);
740 753
741 csr = __raw_readl(creg); 754 csr = __raw_readl(creg);
742 755
@@ -761,7 +774,7 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value)
761 __raw_writel(csr, creg); 774 __raw_writel(csr, creg);
762 } 775 }
763 776
764 local_irq_restore(flags); 777 spin_unlock_irqrestore(&udc->lock, flags);
765 return status; 778 return status;
766} 779}
767 780
@@ -795,7 +808,7 @@ static int at91_wakeup(struct usb_gadget *gadget)
795 unsigned long flags; 808 unsigned long flags;
796 809
797 DBG("%s\n", __func__ ); 810 DBG("%s\n", __func__ );
798 local_irq_save(flags); 811 spin_lock_irqsave(&udc->lock, flags);
799 812
800 if (!udc->clocked || !udc->suspended) 813 if (!udc->clocked || !udc->suspended)
801 goto done; 814 goto done;
@@ -809,7 +822,7 @@ static int at91_wakeup(struct usb_gadget *gadget)
809 at91_udp_write(udc, AT91_UDP_GLB_STAT, glbstate); 822 at91_udp_write(udc, AT91_UDP_GLB_STAT, glbstate);
810 823
811done: 824done:
812 local_irq_restore(flags); 825 spin_unlock_irqrestore(&udc->lock, flags);
813 return status; 826 return status;
814} 827}
815 828
@@ -851,8 +864,11 @@ static void stop_activity(struct at91_udc *udc)
851 ep->stopped = 1; 864 ep->stopped = 1;
852 nuke(ep, -ESHUTDOWN); 865 nuke(ep, -ESHUTDOWN);
853 } 866 }
854 if (driver) 867 if (driver) {
868 spin_unlock(&udc->lock);
855 driver->disconnect(&udc->gadget); 869 driver->disconnect(&udc->gadget);
870 spin_lock(&udc->lock);
871 }
856 872
857 udc_reinit(udc); 873 udc_reinit(udc);
858} 874}
@@ -935,13 +951,13 @@ static int at91_vbus_session(struct usb_gadget *gadget, int is_active)
935 unsigned long flags; 951 unsigned long flags;
936 952
937 // VDBG("vbus %s\n", is_active ? "on" : "off"); 953 // VDBG("vbus %s\n", is_active ? "on" : "off");
938 local_irq_save(flags); 954 spin_lock_irqsave(&udc->lock, flags);
939 udc->vbus = (is_active != 0); 955 udc->vbus = (is_active != 0);
940 if (udc->driver) 956 if (udc->driver)
941 pullup(udc, is_active); 957 pullup(udc, is_active);
942 else 958 else
943 pullup(udc, 0); 959 pullup(udc, 0);
944 local_irq_restore(flags); 960 spin_unlock_irqrestore(&udc->lock, flags);
945 return 0; 961 return 0;
946} 962}
947 963
@@ -950,10 +966,10 @@ static int at91_pullup(struct usb_gadget *gadget, int is_on)
950 struct at91_udc *udc = to_udc(gadget); 966 struct at91_udc *udc = to_udc(gadget);
951 unsigned long flags; 967 unsigned long flags;
952 968
953 local_irq_save(flags); 969 spin_lock_irqsave(&udc->lock, flags);
954 udc->enabled = is_on = !!is_on; 970 udc->enabled = is_on = !!is_on;
955 pullup(udc, is_on); 971 pullup(udc, is_on);
956 local_irq_restore(flags); 972 spin_unlock_irqrestore(&udc->lock, flags);
957 return 0; 973 return 0;
958} 974}
959 975
@@ -962,9 +978,9 @@ static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on)
962 struct at91_udc *udc = to_udc(gadget); 978 struct at91_udc *udc = to_udc(gadget);
963 unsigned long flags; 979 unsigned long flags;
964 980
965 local_irq_save(flags); 981 spin_lock_irqsave(&udc->lock, flags);
966 udc->selfpowered = (is_on != 0); 982 udc->selfpowered = (is_on != 0);
967 local_irq_restore(flags); 983 spin_unlock_irqrestore(&udc->lock, flags);
968 return 0; 984 return 0;
969} 985}
970 986
@@ -1226,8 +1242,11 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr)
1226#undef w_length 1242#undef w_length
1227 1243
1228 /* pass request up to the gadget driver */ 1244 /* pass request up to the gadget driver */
1229 if (udc->driver) 1245 if (udc->driver) {
1246 spin_unlock(&udc->lock);
1230 status = udc->driver->setup(&udc->gadget, &pkt.r); 1247 status = udc->driver->setup(&udc->gadget, &pkt.r);
1248 spin_lock(&udc->lock);
1249 }
1231 else 1250 else
1232 status = -ENODEV; 1251 status = -ENODEV;
1233 if (status < 0) { 1252 if (status < 0) {
@@ -1378,6 +1397,9 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
1378 struct at91_udc *udc = _udc; 1397 struct at91_udc *udc = _udc;
1379 u32 rescans = 5; 1398 u32 rescans = 5;
1380 int disable_clock = 0; 1399 int disable_clock = 0;
1400 unsigned long flags;
1401
1402 spin_lock_irqsave(&udc->lock, flags);
1381 1403
1382 if (!udc->clocked) { 1404 if (!udc->clocked) {
1383 clk_on(udc); 1405 clk_on(udc);
@@ -1433,8 +1455,11 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
1433 * and then into standby to avoid drawing more than 1455 * and then into standby to avoid drawing more than
1434 * 500uA power (2500uA for some high-power configs). 1456 * 500uA power (2500uA for some high-power configs).
1435 */ 1457 */
1436 if (udc->driver && udc->driver->suspend) 1458 if (udc->driver && udc->driver->suspend) {
1459 spin_unlock(&udc->lock);
1437 udc->driver->suspend(&udc->gadget); 1460 udc->driver->suspend(&udc->gadget);
1461 spin_lock(&udc->lock);
1462 }
1438 1463
1439 /* host initiated resume */ 1464 /* host initiated resume */
1440 } else if (status & AT91_UDP_RXRSM) { 1465 } else if (status & AT91_UDP_RXRSM) {
@@ -1451,8 +1476,11 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
1451 * would normally want to switch out of slow clock 1476 * would normally want to switch out of slow clock
1452 * mode into normal mode. 1477 * mode into normal mode.
1453 */ 1478 */
1454 if (udc->driver && udc->driver->resume) 1479 if (udc->driver && udc->driver->resume) {
1480 spin_unlock(&udc->lock);
1455 udc->driver->resume(&udc->gadget); 1481 udc->driver->resume(&udc->gadget);
1482 spin_lock(&udc->lock);
1483 }
1456 1484
1457 /* endpoint IRQs are cleared by handling them */ 1485 /* endpoint IRQs are cleared by handling them */
1458 } else { 1486 } else {
@@ -1474,6 +1502,8 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
1474 if (disable_clock) 1502 if (disable_clock)
1475 clk_off(udc); 1503 clk_off(udc);
1476 1504
1505 spin_unlock_irqrestore(&udc->lock, flags);
1506
1477 return IRQ_HANDLED; 1507 return IRQ_HANDLED;
1478} 1508}
1479 1509
@@ -1556,24 +1586,53 @@ static struct at91_udc controller = {
1556 /* ep6 and ep7 are also reserved (custom silicon might use them) */ 1586 /* ep6 and ep7 are also reserved (custom silicon might use them) */
1557}; 1587};
1558 1588
1589static void at91_vbus_update(struct at91_udc *udc, unsigned value)
1590{
1591 value ^= udc->board.vbus_active_low;
1592 if (value != udc->vbus)
1593 at91_vbus_session(&udc->gadget, value);
1594}
1595
1559static irqreturn_t at91_vbus_irq(int irq, void *_udc) 1596static irqreturn_t at91_vbus_irq(int irq, void *_udc)
1560{ 1597{
1561 struct at91_udc *udc = _udc; 1598 struct at91_udc *udc = _udc;
1562 unsigned value;
1563 1599
1564 /* vbus needs at least brief debouncing */ 1600 /* vbus needs at least brief debouncing */
1565 udelay(10); 1601 udelay(10);
1566 value = gpio_get_value(udc->board.vbus_pin); 1602 at91_vbus_update(udc, gpio_get_value(udc->board.vbus_pin));
1567 if (value != udc->vbus)
1568 at91_vbus_session(&udc->gadget, value);
1569 1603
1570 return IRQ_HANDLED; 1604 return IRQ_HANDLED;
1571} 1605}
1572 1606
1607static void at91_vbus_timer_work(struct work_struct *work)
1608{
1609 struct at91_udc *udc = container_of(work, struct at91_udc,
1610 vbus_timer_work);
1611
1612 at91_vbus_update(udc, gpio_get_value_cansleep(udc->board.vbus_pin));
1613
1614 if (!timer_pending(&udc->vbus_timer))
1615 mod_timer(&udc->vbus_timer, jiffies + VBUS_POLL_TIMEOUT);
1616}
1617
1618static void at91_vbus_timer(unsigned long data)
1619{
1620 struct at91_udc *udc = (struct at91_udc *)data;
1621
1622 /*
1623 * If we are polling vbus it is likely that the gpio is on an
1624 * bus such as i2c or spi which may sleep, so schedule some work
1625 * to read the vbus gpio
1626 */
1627 if (!work_pending(&udc->vbus_timer_work))
1628 schedule_work(&udc->vbus_timer_work);
1629}
1630
1573int usb_gadget_register_driver (struct usb_gadget_driver *driver) 1631int usb_gadget_register_driver (struct usb_gadget_driver *driver)
1574{ 1632{
1575 struct at91_udc *udc = &controller; 1633 struct at91_udc *udc = &controller;
1576 int retval; 1634 int retval;
1635 unsigned long flags;
1577 1636
1578 if (!driver 1637 if (!driver
1579 || driver->speed < USB_SPEED_FULL 1638 || driver->speed < USB_SPEED_FULL
@@ -1605,9 +1664,9 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
1605 return retval; 1664 return retval;
1606 } 1665 }
1607 1666
1608 local_irq_disable(); 1667 spin_lock_irqsave(&udc->lock, flags);
1609 pullup(udc, 1); 1668 pullup(udc, 1);
1610 local_irq_enable(); 1669 spin_unlock_irqrestore(&udc->lock, flags);
1611 1670
1612 DBG("bound to %s\n", driver->driver.name); 1671 DBG("bound to %s\n", driver->driver.name);
1613 return 0; 1672 return 0;
@@ -1617,15 +1676,16 @@ EXPORT_SYMBOL (usb_gadget_register_driver);
1617int usb_gadget_unregister_driver (struct usb_gadget_driver *driver) 1676int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
1618{ 1677{
1619 struct at91_udc *udc = &controller; 1678 struct at91_udc *udc = &controller;
1679 unsigned long flags;
1620 1680
1621 if (!driver || driver != udc->driver || !driver->unbind) 1681 if (!driver || driver != udc->driver || !driver->unbind)
1622 return -EINVAL; 1682 return -EINVAL;
1623 1683
1624 local_irq_disable(); 1684 spin_lock_irqsave(&udc->lock, flags);
1625 udc->enabled = 0; 1685 udc->enabled = 0;
1626 at91_udp_write(udc, AT91_UDP_IDR, ~0); 1686 at91_udp_write(udc, AT91_UDP_IDR, ~0);
1627 pullup(udc, 0); 1687 pullup(udc, 0);
1628 local_irq_enable(); 1688 spin_unlock_irqrestore(&udc->lock, flags);
1629 1689
1630 driver->unbind(&udc->gadget); 1690 driver->unbind(&udc->gadget);
1631 udc->gadget.dev.driver = NULL; 1691 udc->gadget.dev.driver = NULL;
@@ -1641,8 +1701,13 @@ EXPORT_SYMBOL (usb_gadget_unregister_driver);
1641 1701
1642static void at91udc_shutdown(struct platform_device *dev) 1702static void at91udc_shutdown(struct platform_device *dev)
1643{ 1703{
1704 struct at91_udc *udc = platform_get_drvdata(dev);
1705 unsigned long flags;
1706
1644 /* force disconnect on reboot */ 1707 /* force disconnect on reboot */
1708 spin_lock_irqsave(&udc->lock, flags);
1645 pullup(platform_get_drvdata(dev), 0); 1709 pullup(platform_get_drvdata(dev), 0);
1710 spin_unlock_irqrestore(&udc->lock, flags);
1646} 1711}
1647 1712
1648static int __init at91udc_probe(struct platform_device *pdev) 1713static int __init at91udc_probe(struct platform_device *pdev)
@@ -1683,6 +1748,7 @@ static int __init at91udc_probe(struct platform_device *pdev)
1683 udc->board = *(struct at91_udc_data *) dev->platform_data; 1748 udc->board = *(struct at91_udc_data *) dev->platform_data;
1684 udc->pdev = pdev; 1749 udc->pdev = pdev;
1685 udc->enabled = 0; 1750 udc->enabled = 0;
1751 spin_lock_init(&udc->lock);
1686 1752
1687 /* rm9200 needs manual D+ pullup; off by default */ 1753 /* rm9200 needs manual D+ pullup; off by default */
1688 if (cpu_is_at91rm9200()) { 1754 if (cpu_is_at91rm9200()) {
@@ -1763,13 +1829,23 @@ static int __init at91udc_probe(struct platform_device *pdev)
1763 * Get the initial state of VBUS - we cannot expect 1829 * Get the initial state of VBUS - we cannot expect
1764 * a pending interrupt. 1830 * a pending interrupt.
1765 */ 1831 */
1766 udc->vbus = gpio_get_value(udc->board.vbus_pin); 1832 udc->vbus = gpio_get_value_cansleep(udc->board.vbus_pin) ^
1767 if (request_irq(udc->board.vbus_pin, at91_vbus_irq, 1833 udc->board.vbus_active_low;
1768 IRQF_DISABLED, driver_name, udc)) { 1834
1769 DBG("request vbus irq %d failed\n", 1835 if (udc->board.vbus_polled) {
1770 udc->board.vbus_pin); 1836 INIT_WORK(&udc->vbus_timer_work, at91_vbus_timer_work);
1771 retval = -EBUSY; 1837 setup_timer(&udc->vbus_timer, at91_vbus_timer,
1772 goto fail3; 1838 (unsigned long)udc);
1839 mod_timer(&udc->vbus_timer,
1840 jiffies + VBUS_POLL_TIMEOUT);
1841 } else {
1842 if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
1843 IRQF_DISABLED, driver_name, udc)) {
1844 DBG("request vbus irq %d failed\n",
1845 udc->board.vbus_pin);
1846 retval = -EBUSY;
1847 goto fail3;
1848 }
1773 } 1849 }
1774 } else { 1850 } else {
1775 DBG("no VBUS detection, assuming always-on\n"); 1851 DBG("no VBUS detection, assuming always-on\n");
@@ -1804,13 +1880,16 @@ static int __exit at91udc_remove(struct platform_device *pdev)
1804{ 1880{
1805 struct at91_udc *udc = platform_get_drvdata(pdev); 1881 struct at91_udc *udc = platform_get_drvdata(pdev);
1806 struct resource *res; 1882 struct resource *res;
1883 unsigned long flags;
1807 1884
1808 DBG("remove\n"); 1885 DBG("remove\n");
1809 1886
1810 if (udc->driver) 1887 if (udc->driver)
1811 return -EBUSY; 1888 return -EBUSY;
1812 1889
1890 spin_lock_irqsave(&udc->lock, flags);
1813 pullup(udc, 0); 1891 pullup(udc, 0);
1892 spin_unlock_irqrestore(&udc->lock, flags);
1814 1893
1815 device_init_wakeup(&pdev->dev, 0); 1894 device_init_wakeup(&pdev->dev, 0);
1816 remove_debug_file(udc); 1895 remove_debug_file(udc);
@@ -1840,6 +1919,7 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
1840{ 1919{
1841 struct at91_udc *udc = platform_get_drvdata(pdev); 1920 struct at91_udc *udc = platform_get_drvdata(pdev);
1842 int wake = udc->driver && device_may_wakeup(&pdev->dev); 1921 int wake = udc->driver && device_may_wakeup(&pdev->dev);
1922 unsigned long flags;
1843 1923
1844 /* Unless we can act normally to the host (letting it wake us up 1924 /* Unless we can act normally to the host (letting it wake us up
1845 * whenever it has work for us) force disconnect. Wakeup requires 1925 * whenever it has work for us) force disconnect. Wakeup requires
@@ -1849,13 +1929,15 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
1849 if ((!udc->suspended && udc->addr) 1929 if ((!udc->suspended && udc->addr)
1850 || !wake 1930 || !wake
1851 || at91_suspend_entering_slow_clock()) { 1931 || at91_suspend_entering_slow_clock()) {
1932 spin_lock_irqsave(&udc->lock, flags);
1852 pullup(udc, 0); 1933 pullup(udc, 0);
1853 wake = 0; 1934 wake = 0;
1935 spin_unlock_irqrestore(&udc->lock, flags);
1854 } else 1936 } else
1855 enable_irq_wake(udc->udp_irq); 1937 enable_irq_wake(udc->udp_irq);
1856 1938
1857 udc->active_suspend = wake; 1939 udc->active_suspend = wake;
1858 if (udc->board.vbus_pin > 0 && wake) 1940 if (udc->board.vbus_pin > 0 && !udc->board.vbus_polled && wake)
1859 enable_irq_wake(udc->board.vbus_pin); 1941 enable_irq_wake(udc->board.vbus_pin);
1860 return 0; 1942 return 0;
1861} 1943}
@@ -1863,15 +1945,20 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
1863static int at91udc_resume(struct platform_device *pdev) 1945static int at91udc_resume(struct platform_device *pdev)
1864{ 1946{
1865 struct at91_udc *udc = platform_get_drvdata(pdev); 1947 struct at91_udc *udc = platform_get_drvdata(pdev);
1948 unsigned long flags;
1866 1949
1867 if (udc->board.vbus_pin > 0 && udc->active_suspend) 1950 if (udc->board.vbus_pin > 0 && !udc->board.vbus_polled &&
1951 udc->active_suspend)
1868 disable_irq_wake(udc->board.vbus_pin); 1952 disable_irq_wake(udc->board.vbus_pin);
1869 1953
1870 /* maybe reconnect to host; if so, clocks on */ 1954 /* maybe reconnect to host; if so, clocks on */
1871 if (udc->active_suspend) 1955 if (udc->active_suspend)
1872 disable_irq_wake(udc->udp_irq); 1956 disable_irq_wake(udc->udp_irq);
1873 else 1957 else {
1958 spin_lock_irqsave(&udc->lock, flags);
1874 pullup(udc, 1); 1959 pullup(udc, 1);
1960 spin_unlock_irqrestore(&udc->lock, flags);
1961 }
1875 return 0; 1962 return 0;
1876} 1963}
1877#else 1964#else
diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h
index c65d62295890..108ca54f9092 100644
--- a/drivers/usb/gadget/at91_udc.h
+++ b/drivers/usb/gadget/at91_udc.h
@@ -144,6 +144,9 @@ struct at91_udc {
144 struct proc_dir_entry *pde; 144 struct proc_dir_entry *pde;
145 void __iomem *udp_baseaddr; 145 void __iomem *udp_baseaddr;
146 int udp_irq; 146 int udp_irq;
147 spinlock_t lock;
148 struct timer_list vbus_timer;
149 struct work_struct vbus_timer_work;
147}; 150};
148 151
149static inline struct at91_udc *to_udc(struct usb_gadget *g) 152static inline struct at91_udc *to_udc(struct usb_gadget *g)
diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c
index d0b8bde59e59..eafa6d2c5ed7 100644
--- a/drivers/usb/gadget/fsl_mxc_udc.c
+++ b/drivers/usb/gadget/fsl_mxc_udc.c
@@ -30,7 +30,7 @@ int fsl_udc_clk_init(struct platform_device *pdev)
30 30
31 pdata = pdev->dev.platform_data; 31 pdata = pdev->dev.platform_data;
32 32
33 if (!cpu_is_mx35()) { 33 if (!cpu_is_mx35() && !cpu_is_mx25()) {
34 mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb"); 34 mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb");
35 if (IS_ERR(mxc_ahb_clk)) 35 if (IS_ERR(mxc_ahb_clk))
36 return PTR_ERR(mxc_ahb_clk); 36 return PTR_ERR(mxc_ahb_clk);
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index bd4027745aa7..a8ad8ac120a2 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -182,7 +182,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
182 } 182 }
183 clk_enable(priv->usbclk); 183 clk_enable(priv->usbclk);
184 184
185 if (!cpu_is_mx35()) { 185 if (!cpu_is_mx35() && !cpu_is_mx25()) {
186 priv->ahbclk = clk_get(dev, "usb_ahb"); 186 priv->ahbclk = clk_get(dev, "usb_ahb");
187 if (IS_ERR(priv->ahbclk)) { 187 if (IS_ERR(priv->ahbclk)) {
188 ret = PTR_ERR(priv->ahbclk); 188 ret = PTR_ERR(priv->ahbclk);
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index b4b6deceed15..43f0639b1c10 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -175,6 +175,7 @@ struct imxfb_info {
175 175
176 struct imx_fb_videomode *mode; 176 struct imx_fb_videomode *mode;
177 int num_modes; 177 int num_modes;
178 struct backlight_device *bl;
178 179
179 void (*lcd_power)(int); 180 void (*lcd_power)(int);
180 void (*backlight_power)(int); 181 void (*backlight_power)(int);
@@ -449,6 +450,73 @@ static int imxfb_set_par(struct fb_info *info)
449 return 0; 450 return 0;
450} 451}
451 452
453
454
455static int imxfb_bl_get_brightness(struct backlight_device *bl)
456{
457 struct imxfb_info *fbi = bl_get_data(bl);
458
459 return readl(fbi->regs + LCDC_PWMR) & 0xFF;
460}
461
462static int imxfb_bl_update_status(struct backlight_device *bl)
463{
464 struct imxfb_info *fbi = bl_get_data(bl);
465 int brightness = bl->props.brightness;
466
467 if (bl->props.power != FB_BLANK_UNBLANK)
468 brightness = 0;
469 if (bl->props.fb_blank != FB_BLANK_UNBLANK)
470 brightness = 0;
471
472 fbi->pwmr = (fbi->pwmr & ~0xFF) | brightness;
473
474 if (bl->props.fb_blank != FB_BLANK_UNBLANK)
475 clk_enable(fbi->clk);
476 writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
477 if (bl->props.fb_blank != FB_BLANK_UNBLANK)
478 clk_disable(fbi->clk);
479
480 return 0;
481}
482
483static const struct backlight_ops imxfb_lcdc_bl_ops = {
484 .update_status = imxfb_bl_update_status,
485 .get_brightness = imxfb_bl_get_brightness,
486};
487
488static void imxfb_init_backlight(struct imxfb_info *fbi)
489{
490 struct backlight_properties props;
491 struct backlight_device *bl;
492
493 if (fbi->bl)
494 return;
495
496 memset(&props, 0, sizeof(struct backlight_properties));
497 props.max_brightness = 0xff;
498 writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
499
500 bl = backlight_device_register("imxfb-bl", &fbi->pdev->dev, fbi,
501 &imxfb_lcdc_bl_ops, &props);
502 if (IS_ERR(bl)) {
503 dev_err(&fbi->pdev->dev, "error %ld on backlight register\n",
504 PTR_ERR(bl));
505 return;
506 }
507
508 fbi->bl = bl;
509 bl->props.power = FB_BLANK_UNBLANK;
510 bl->props.fb_blank = FB_BLANK_UNBLANK;
511 bl->props.brightness = imxfb_bl_get_brightness(bl);
512}
513
514static void imxfb_exit_backlight(struct imxfb_info *fbi)
515{
516 if (fbi->bl)
517 backlight_device_unregister(fbi->bl);
518}
519
452static void imxfb_enable_controller(struct imxfb_info *fbi) 520static void imxfb_enable_controller(struct imxfb_info *fbi)
453{ 521{
454 pr_debug("Enabling LCD controller\n"); 522 pr_debug("Enabling LCD controller\n");
@@ -579,7 +647,6 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
579 fbi->regs + LCDC_SIZE); 647 fbi->regs + LCDC_SIZE);
580 648
581 writel(fbi->pcr, fbi->regs + LCDC_PCR); 649 writel(fbi->pcr, fbi->regs + LCDC_PCR);
582 writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
583 writel(fbi->lscr1, fbi->regs + LCDC_LSCR1); 650 writel(fbi->lscr1, fbi->regs + LCDC_LSCR1);
584 writel(fbi->dmacr, fbi->regs + LCDC_DMACR); 651 writel(fbi->dmacr, fbi->regs + LCDC_DMACR);
585 652
@@ -779,6 +846,8 @@ static int __init imxfb_probe(struct platform_device *pdev)
779 } 846 }
780 847
781 imxfb_enable_controller(fbi); 848 imxfb_enable_controller(fbi);
849 fbi->pdev = pdev;
850 imxfb_init_backlight(fbi);
782 851
783 return 0; 852 return 0;
784 853
@@ -816,6 +885,7 @@ static int __devexit imxfb_remove(struct platform_device *pdev)
816 885
817 imxfb_disable_controller(fbi); 886 imxfb_disable_controller(fbi);
818 887
888 imxfb_exit_backlight(fbi);
819 unregister_framebuffer(info); 889 unregister_framebuffer(info);
820 890
821 pdata = pdev->dev.platform_data; 891 pdata = pdev->dev.platform_data;
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index 3b1237ad85ed..f6fdc2085f3e 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -25,7 +25,7 @@
25#include <linux/list.h> 25#include <linux/list.h>
26#include <linux/slab.h> 26#include <linux/slab.h>
27#include <linux/seq_file.h> 27#include <linux/seq_file.h>
28#include <linux/bootmem.h> 28#include <linux/memblock.h>
29#include <linux/completion.h> 29#include <linux/completion.h>
30#include <linux/debugfs.h> 30#include <linux/debugfs.h>
31#include <linux/jiffies.h> 31#include <linux/jiffies.h>
@@ -525,10 +525,8 @@ early_param("vram", omap_vram_early_vram);
525 * Called from map_io. We need to call to this early enough so that we 525 * Called from map_io. We need to call to this early enough so that we
526 * can reserve the fixed SDRAM regions before VM could get hold of them. 526 * can reserve the fixed SDRAM regions before VM could get hold of them.
527 */ 527 */
528void __init omap_vram_reserve_sdram(void) 528void __init omap_vram_reserve_sdram_memblock(void)
529{ 529{
530 struct bootmem_data *bdata;
531 unsigned long sdram_start, sdram_size;
532 u32 paddr; 530 u32 paddr;
533 u32 size = 0; 531 u32 size = 0;
534 532
@@ -555,29 +553,28 @@ void __init omap_vram_reserve_sdram(void)
555 553
556 size = PAGE_ALIGN(size); 554 size = PAGE_ALIGN(size);
557 555
558 bdata = NODE_DATA(0)->bdata;
559 sdram_start = bdata->node_min_pfn << PAGE_SHIFT;
560 sdram_size = (bdata->node_low_pfn << PAGE_SHIFT) - sdram_start;
561
562 if (paddr) { 556 if (paddr) {
563 if ((paddr & ~PAGE_MASK) || paddr < sdram_start || 557 struct memblock_property res;
564 paddr + size > sdram_start + sdram_size) { 558
559 res.base = paddr;
560 res.size = size;
561 if ((paddr & ~PAGE_MASK) || memblock_find(&res) ||
562 res.base != paddr || res.size != size) {
565 pr_err("Illegal SDRAM region for VRAM\n"); 563 pr_err("Illegal SDRAM region for VRAM\n");
566 return; 564 return;
567 } 565 }
568 566
569 if (reserve_bootmem(paddr, size, BOOTMEM_EXCLUSIVE) < 0) { 567 if (memblock_is_region_reserved(paddr, size)) {
570 pr_err("FB: failed to reserve VRAM\n"); 568 pr_err("FB: failed to reserve VRAM - busy\n");
571 return; 569 return;
572 } 570 }
573 } else { 571
574 if (size > sdram_size) { 572 if (memblock_reserve(paddr, size) < 0) {
575 pr_err("Illegal SDRAM size for VRAM\n"); 573 pr_err("FB: failed to reserve VRAM - no memory\n");
576 return; 574 return;
577 } 575 }
578 576 } else {
579 paddr = virt_to_phys(alloc_bootmem_pages(size)); 577 paddr = memblock_alloc_base(size, PAGE_SIZE, MEMBLOCK_REAL_LIMIT);
580 BUG_ON(paddr & ~PAGE_MASK);
581 } 578 }
582 579
583 omap_vram_add_region(paddr, size); 580 omap_vram_add_region(paddr, size);
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-24 20:21:27 -0500