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authorManuel Lauss <manuel.lauss@googlemail.com>2009-10-04 08:55:29 -0400
committerRalf Baechle <ralf@linux-mips.org>2010-02-27 06:52:51 -0500
commit0273b4efccd3bc2b2ef5ea9778e71d8efbbb7ac7 (patch)
treec67c6fb5ff0aa4a0201676374b252ea60475235c /drivers
parent27dd65ac9afabc8e67ab73f7c2f575eddbb47167 (diff)
MIPS: Alchemy: XXS1500 PCMCIA driver rewrite
Rewritten XXS1500 PCMCIA socket driver, standalone (doesn't depend on au1000_generic.c) and added carddetect IRQ support. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Florian Fainelli <florian@openwrt.org> Cc: Linux-PCMCIA <linux-pcmcia@lists.infradead.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pcmcia/Kconfig10
-rw-r--r--drivers/pcmcia/Makefile3
-rw-r--r--drivers/pcmcia/au1000_xxs1500.c188
-rw-r--r--drivers/pcmcia/xxs1500_ss.c357
4 files changed, 369 insertions, 189 deletions
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index 7c16d35679a6..1e01578a0a77 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -185,6 +185,16 @@ config PCMCIA_ALCHEMY_DEVBOARD
185 185
186 This driver is also available as a module called db1xxx_ss.ko 186 This driver is also available as a module called db1xxx_ss.ko
187 187
188config PCMCIA_XXS1500
189 tristate "MyCable XXS1500 PCMCIA socket support"
190 depends on PCMCIA && MIPS_XXS1500
191 select 64BIT_PHYS_ADDR
192 help
193 Support for the PCMCIA/CF socket interface on MyCable XXS1500
194 systems.
195
196 This driver is also available as a module called xxs1500_ss.ko
197
188config PCMCIA_BCM63XX 198config PCMCIA_BCM63XX
189 tristate "bcm63xx pcmcia support" 199 tristate "bcm63xx pcmcia support"
190 depends on BCM63XX && PCMCIA 200 depends on BCM63XX && PCMCIA
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile
index f128d71c74c2..21ee96448b1e 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -39,7 +39,6 @@ obj-$(CONFIG_PCMCIA_ALCHEMY_DEVBOARD) += db1xxx_ss.o
39 39
40au1x00_ss-y += au1000_generic.o 40au1x00_ss-y += au1000_generic.o
41au1x00_ss-$(CONFIG_MIPS_PB1000) += au1000_pb1x00.o 41au1x00_ss-$(CONFIG_MIPS_PB1000) += au1000_pb1x00.o
42au1x00_ss-$(CONFIG_MIPS_XXS1500) += au1000_xxs1500.o
43 42
44sa1111_cs-y += sa1111_generic.o 43sa1111_cs-y += sa1111_generic.o
45sa1111_cs-$(CONFIG_ASSABET_NEPONSET) += sa1100_neponset.o 44sa1111_cs-$(CONFIG_ASSABET_NEPONSET) += sa1100_neponset.o
@@ -69,3 +68,5 @@ pxa2xx-obj-$(CONFIG_MACH_E740) += pxa2xx_e740.o
69pxa2xx-obj-$(CONFIG_MACH_STARGATE2) += pxa2xx_stargate2.o 68pxa2xx-obj-$(CONFIG_MACH_STARGATE2) += pxa2xx_stargate2.o
70 69
71obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_base.o $(pxa2xx-obj-y) 70obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_base.o $(pxa2xx-obj-y)
71
72obj-$(CONFIG_PCMCIA_XXS1500) += xxs1500_ss.o
diff --git a/drivers/pcmcia/au1000_xxs1500.c b/drivers/pcmcia/au1000_xxs1500.c
deleted file mode 100644
index b43d47b50819..000000000000
--- a/drivers/pcmcia/au1000_xxs1500.c
+++ /dev/null
@@ -1,188 +0,0 @@
1/*
2 *
3 * MyCable board specific pcmcia routines.
4 *
5 * Copyright 2003 MontaVista Software Inc.
6 * Author: Pete Popov, MontaVista Software, Inc.
7 * ppopov@mvista.com or source@mvista.com
8 *
9 * ########################################################################
10 *
11 * This program is free software; you can distribute it and/or modify it
12 * under the terms of the GNU General Public License (Version 2) as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 * for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 *
24 * ########################################################################
25 *
26 *
27 */
28#include <linux/module.h>
29#include <linux/init.h>
30#include <linux/delay.h>
31#include <linux/ioport.h>
32#include <linux/kernel.h>
33#include <linux/timer.h>
34#include <linux/mm.h>
35#include <linux/proc_fs.h>
36#include <linux/types.h>
37
38#include <pcmcia/cs_types.h>
39#include <pcmcia/cs.h>
40#include <pcmcia/ss.h>
41#include <pcmcia/cistpl.h>
42#include <pcmcia/bus_ops.h>
43
44#include <asm/io.h>
45#include <asm/irq.h>
46#include <asm/system.h>
47
48#include <asm/au1000.h>
49#include <asm/au1000_pcmcia.h>
50
51#define PCMCIA_MAX_SOCK 0
52#define PCMCIA_NUM_SOCKS (PCMCIA_MAX_SOCK + 1)
53#define PCMCIA_IRQ AU1000_GPIO_4
54
55#if 0
56#define DEBUG(x, args...) printk(__func__ ": " x, ##args)
57#else
58#define DEBUG(x,args...)
59#endif
60
61static int xxs1500_pcmcia_init(struct pcmcia_init *init)
62{
63 return PCMCIA_NUM_SOCKS;
64}
65
66static int xxs1500_pcmcia_shutdown(void)
67{
68 /* turn off power */
69 au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30),
70 GPIO2_OUTPUT);
71 au_sync_delay(100);
72
73 /* assert reset */
74 au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20),
75 GPIO2_OUTPUT);
76 au_sync_delay(100);
77 return 0;
78}
79
80
81static int
82xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
83{
84 u32 inserted; u32 vs;
85 unsigned long gpio, gpio2;
86
87 if(sock > PCMCIA_MAX_SOCK) return -1;
88
89 gpio = au_readl(SYS_PINSTATERD);
90 gpio2 = au_readl(GPIO2_PINSTATE);
91
92 vs = gpio2 & ((1<<8) | (1<<9));
93 inserted = (!(gpio & 0x1) && !(gpio & 0x2));
94
95 state->ready = 0;
96 state->vs_Xv = 0;
97 state->vs_3v = 0;
98 state->detect = 0;
99
100 if (inserted) {
101 switch (vs) {
102 case 0:
103 case 1:
104 case 2:
105 state->vs_3v=1;
106 break;
107 case 3: /* 5V */
108 default:
109 /* return without setting 'detect' */
110 printk(KERN_ERR "au1x00_cs: unsupported VS\n",
111 vs);
112 return;
113 }
114 state->detect = 1;
115 }
116
117 if (state->detect) {
118 state->ready = 1;
119 }
120
121 state->bvd1= gpio2 & (1<<10);
122 state->bvd2 = gpio2 & (1<<11);
123 state->wrprot=0;
124 return 1;
125}
126
127
128static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
129{
130
131 if(info->sock > PCMCIA_MAX_SOCK) return -1;
132 info->irq = PCMCIA_IRQ;
133 return 0;
134}
135
136
137static int
138xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure)
139{
140
141 if(configure->sock > PCMCIA_MAX_SOCK) return -1;
142
143 DEBUG("Vcc %dV Vpp %dV, reset %d\n",
144 configure->vcc, configure->vpp, configure->reset);
145
146 switch(configure->vcc){
147 case 33: /* Vcc 3.3V */
148 /* turn on power */
149 DEBUG("turn on power\n");
150 au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30),
151 GPIO2_OUTPUT);
152 au_sync_delay(100);
153 break;
154 case 50: /* Vcc 5V */
155 default: /* what's this ? */
156 printk(KERN_ERR "au1x00_cs: unsupported VCC\n");
157 case 0: /* Vcc 0 */
158 /* turn off power */
159 au_sync_delay(100);
160 au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30),
161 GPIO2_OUTPUT);
162 break;
163 }
164
165 if (!configure->reset) {
166 DEBUG("deassert reset\n");
167 au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20),
168 GPIO2_OUTPUT);
169 au_sync_delay(100);
170 au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21),
171 GPIO2_OUTPUT);
172 }
173 else {
174 DEBUG("assert reset\n");
175 au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20),
176 GPIO2_OUTPUT);
177 }
178 au_sync_delay(100);
179 return 0;
180}
181
182struct pcmcia_low_level xxs1500_pcmcia_ops = {
183 xxs1500_pcmcia_init,
184 xxs1500_pcmcia_shutdown,
185 xxs1500_pcmcia_socket_state,
186 xxs1500_pcmcia_get_irq_info,
187 xxs1500_pcmcia_configure_socket
188};
diff --git a/drivers/pcmcia/xxs1500_ss.c b/drivers/pcmcia/xxs1500_ss.c
new file mode 100644
index 000000000000..4e36930b51ce
--- /dev/null
+++ b/drivers/pcmcia/xxs1500_ss.c
@@ -0,0 +1,357 @@
1/*
2 * PCMCIA socket code for the MyCable XXS1500 system.
3 *
4 * Copyright (c) 2009 Manuel Lauss <manuel.lauss@gmail.com>
5 *
6 */
7
8#include <linux/delay.h>
9#include <linux/gpio.h>
10#include <linux/interrupt.h>
11#include <linux/io.h>
12#include <linux/ioport.h>
13#include <linux/mm.h>
14#include <linux/platform_device.h>
15#include <linux/pm.h>
16#include <linux/resource.h>
17#include <linux/spinlock.h>
18
19#include <pcmcia/cs_types.h>
20#include <pcmcia/cs.h>
21#include <pcmcia/ss.h>
22#include <pcmcia/cistpl.h>
23
24#include <asm/irq.h>
25#include <asm/system.h>
26#include <asm/mach-au1x00/au1000.h>
27
28#define MEM_MAP_SIZE 0x400000
29#define IO_MAP_SIZE 0x1000
30
31
32/*
33 * 3.3V cards only; all interfacing is done via gpios:
34 *
35 * 0/1: carddetect (00 = card present, xx = huh)
36 * 4: card irq
37 * 204: reset (high-act)
38 * 205: buffer enable (low-act)
39 * 208/209: card voltage key (00,01,10,11)
40 * 210: battwarn
41 * 211: batdead
42 * 214: power (low-act)
43 */
44#define GPIO_CDA 0
45#define GPIO_CDB 1
46#define GPIO_CARDIRQ 4
47#define GPIO_RESET 204
48#define GPIO_OUTEN 205
49#define GPIO_VSL 208
50#define GPIO_VSH 209
51#define GPIO_BATTDEAD 210
52#define GPIO_BATTWARN 211
53#define GPIO_POWER 214
54
55struct xxs1500_pcmcia_sock {
56 struct pcmcia_socket socket;
57 void *virt_io;
58
59 /* the "pseudo" addresses of the PCMCIA space. */
60 unsigned long phys_io;
61 unsigned long phys_attr;
62 unsigned long phys_mem;
63
64 /* previous flags for set_socket() */
65 unsigned int old_flags;
66};
67
68#define to_xxs_socket(x) container_of(x, struct xxs1500_pcmcia_sock, socket)
69
70static irqreturn_t cdirq(int irq, void *data)
71{
72 struct xxs1500_pcmcia_sock *sock = data;
73
74 pcmcia_parse_events(&sock->socket, SS_DETECT);
75
76 return IRQ_HANDLED;
77}
78
79static int xxs1500_pcmcia_configure(struct pcmcia_socket *skt,
80 struct socket_state_t *state)
81{
82 struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt);
83 unsigned int changed;
84
85 /* power control */
86 switch (state->Vcc) {
87 case 0:
88 gpio_set_value(GPIO_POWER, 1); /* power off */
89 break;
90 case 33:
91 gpio_set_value(GPIO_POWER, 0); /* power on */
92 break;
93 case 50:
94 default:
95 return -EINVAL;
96 }
97
98 changed = state->flags ^ sock->old_flags;
99
100 if (changed & SS_RESET) {
101 if (state->flags & SS_RESET) {
102 gpio_set_value(GPIO_RESET, 1); /* assert reset */
103 gpio_set_value(GPIO_OUTEN, 1); /* buffers off */
104 } else {
105 gpio_set_value(GPIO_RESET, 0); /* deassert reset */
106 gpio_set_value(GPIO_OUTEN, 0); /* buffers on */
107 msleep(500);
108 }
109 }
110
111 sock->old_flags = state->flags;
112
113 return 0;
114}
115
116static int xxs1500_pcmcia_get_status(struct pcmcia_socket *skt,
117 unsigned int *value)
118{
119 unsigned int status;
120 int i;
121
122 status = 0;
123
124 /* check carddetects: GPIO[0:1] must both be low */
125 if (!gpio_get_value(GPIO_CDA) && !gpio_get_value(GPIO_CDB))
126 status |= SS_DETECT;
127
128 /* determine card voltage: GPIO[208:209] binary value */
129 i = (!!gpio_get_value(GPIO_VSL)) | ((!!gpio_get_value(GPIO_VSH)) << 1);
130
131 switch (i) {
132 case 0:
133 case 1:
134 case 2:
135 status |= SS_3VCARD; /* 3V card */
136 break;
137 case 3: /* 5V card, unsupported */
138 default:
139 status |= SS_XVCARD; /* treated as unsupported in core */
140 }
141
142 /* GPIO214: low active power switch */
143 status |= gpio_get_value(GPIO_POWER) ? 0 : SS_POWERON;
144
145 /* GPIO204: high-active reset line */
146 status |= gpio_get_value(GPIO_RESET) ? SS_RESET : SS_READY;
147
148 /* other stuff */
149 status |= gpio_get_value(GPIO_BATTDEAD) ? 0 : SS_BATDEAD;
150 status |= gpio_get_value(GPIO_BATTWARN) ? 0 : SS_BATWARN;
151
152 *value = status;
153
154 return 0;
155}
156
157static int xxs1500_pcmcia_sock_init(struct pcmcia_socket *skt)
158{
159 gpio_direction_input(GPIO_CDA);
160 gpio_direction_input(GPIO_CDB);
161 gpio_direction_input(GPIO_VSL);
162 gpio_direction_input(GPIO_VSH);
163 gpio_direction_input(GPIO_BATTDEAD);
164 gpio_direction_input(GPIO_BATTWARN);
165 gpio_direction_output(GPIO_RESET, 1); /* assert reset */
166 gpio_direction_output(GPIO_OUTEN, 1); /* disable buffers */
167 gpio_direction_output(GPIO_POWER, 1); /* power off */
168
169 return 0;
170}
171
172static int xxs1500_pcmcia_sock_suspend(struct pcmcia_socket *skt)
173{
174 return 0;
175}
176
177static int au1x00_pcmcia_set_io_map(struct pcmcia_socket *skt,
178 struct pccard_io_map *map)
179{
180 struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt);
181
182 map->start = (u32)sock->virt_io;
183 map->stop = map->start + IO_MAP_SIZE;
184
185 return 0;
186}
187
188static int au1x00_pcmcia_set_mem_map(struct pcmcia_socket *skt,
189 struct pccard_mem_map *map)
190{
191 struct xxs1500_pcmcia_sock *sock = to_xxs_socket(skt);
192
193 if (map->flags & MAP_ATTRIB)
194 map->static_start = sock->phys_attr + map->card_start;
195 else
196 map->static_start = sock->phys_mem + map->card_start;
197
198 return 0;
199}
200
201static struct pccard_operations xxs1500_pcmcia_operations = {
202 .init = xxs1500_pcmcia_sock_init,
203 .suspend = xxs1500_pcmcia_sock_suspend,
204 .get_status = xxs1500_pcmcia_get_status,
205 .set_socket = xxs1500_pcmcia_configure,
206 .set_io_map = au1x00_pcmcia_set_io_map,
207 .set_mem_map = au1x00_pcmcia_set_mem_map,
208};
209
210static int __devinit xxs1500_pcmcia_probe(struct platform_device *pdev)
211{
212 struct xxs1500_pcmcia_sock *sock;
213 struct resource *r;
214 phys_t physio;
215 int ret, irq;
216
217 sock = kzalloc(sizeof(struct xxs1500_pcmcia_sock), GFP_KERNEL);
218 if (!sock)
219 return -ENOMEM;
220
221 ret = -ENODEV;
222
223 /*
224 * pseudo-attr: The 32bit address of the PCMCIA attribute space
225 * for this socket (usually the 36bit address shifted 4 to the
226 * right).
227 */
228 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pseudo-attr");
229 if (!r) {
230 dev_err(&pdev->dev, "missing 'pseudo-attr' resource!\n");
231 goto out0;
232 }
233 sock->phys_attr = r->start;
234
235 /*
236 * pseudo-mem: The 32bit address of the PCMCIA memory space for
237 * this socket (usually the 36bit address shifted 4 to the right)
238 */
239 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pseudo-mem");
240 if (!r) {
241 dev_err(&pdev->dev, "missing 'pseudo-mem' resource!\n");
242 goto out0;
243 }
244 sock->phys_mem = r->start;
245
246 /*
247 * pseudo-io: The 32bit address of the PCMCIA IO space for this
248 * socket (usually the 36bit address shifted 4 to the right).
249 */
250 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pseudo-io");
251 if (!r) {
252 dev_err(&pdev->dev, "missing 'pseudo-io' resource!\n");
253 goto out0;
254 }
255 sock->phys_io = r->start;
256
257
258 /* for io must remap the full 36bit address (for reference see
259 * alchemy/common/setup.c::__fixup_bigphys_addr)
260 */
261 physio = ((phys_t)sock->phys_io) << 4;
262
263 /*
264 * PCMCIA client drivers use the inb/outb macros to access
265 * the IO registers. Since mips_io_port_base is added
266 * to the access address of the mips implementation of
267 * inb/outb, we need to subtract it here because we want
268 * to access the I/O or MEM address directly, without
269 * going through this "mips_io_port_base" mechanism.
270 */
271 sock->virt_io = (void *)(ioremap(physio, IO_MAP_SIZE) -
272 mips_io_port_base);
273
274 if (!sock->virt_io) {
275 dev_err(&pdev->dev, "cannot remap IO area\n");
276 ret = -ENOMEM;
277 goto out0;
278 }
279
280 sock->socket.ops = &xxs1500_pcmcia_operations;
281 sock->socket.owner = THIS_MODULE;
282 sock->socket.pci_irq = gpio_to_irq(GPIO_CARDIRQ);
283 sock->socket.features = SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
284 sock->socket.map_size = MEM_MAP_SIZE;
285 sock->socket.io_offset = (unsigned long)sock->virt_io;
286 sock->socket.dev.parent = &pdev->dev;
287 sock->socket.resource_ops = &pccard_static_ops;
288
289 platform_set_drvdata(pdev, sock);
290
291 /* setup carddetect irq: use one of the 2 GPIOs as an
292 * edge detector.
293 */
294 irq = gpio_to_irq(GPIO_CDA);
295 set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
296 ret = request_irq(irq, cdirq, 0, "pcmcia_carddetect", sock);
297 if (ret) {
298 dev_err(&pdev->dev, "cannot setup cd irq\n");
299 goto out1;
300 }
301
302 ret = pcmcia_register_socket(&sock->socket);
303 if (ret) {
304 dev_err(&pdev->dev, "failed to register\n");
305 goto out2;
306 }
307
308 printk(KERN_INFO "MyCable XXS1500 PCMCIA socket services\n");
309
310 return 0;
311
312out2:
313 free_irq(gpio_to_irq(GPIO_CDA), sock);
314out1:
315 iounmap((void *)(sock->virt_io + (u32)mips_io_port_base));
316out0:
317 kfree(sock);
318 return ret;
319}
320
321static int __devexit xxs1500_pcmcia_remove(struct platform_device *pdev)
322{
323 struct xxs1500_pcmcia_sock *sock = platform_get_drvdata(pdev);
324
325 pcmcia_unregister_socket(&sock->socket);
326 free_irq(gpio_to_irq(GPIO_CDA), sock);
327 iounmap((void *)(sock->virt_io + (u32)mips_io_port_base));
328 kfree(sock);
329
330 return 0;
331}
332
333static struct platform_driver xxs1500_pcmcia_socket_driver = {
334 .driver = {
335 .name = "xxs1500_pcmcia",
336 .owner = THIS_MODULE,
337 },
338 .probe = xxs1500_pcmcia_probe,
339 .remove = __devexit_p(xxs1500_pcmcia_remove),
340};
341
342int __init xxs1500_pcmcia_socket_load(void)
343{
344 return platform_driver_register(&xxs1500_pcmcia_socket_driver);
345}
346
347void __exit xxs1500_pcmcia_socket_unload(void)
348{
349 platform_driver_unregister(&xxs1500_pcmcia_socket_driver);
350}
351
352module_init(xxs1500_pcmcia_socket_load);
353module_exit(xxs1500_pcmcia_socket_unload);
354
355MODULE_LICENSE("GPL");
356MODULE_DESCRIPTION("PCMCIA Socket Services for MyCable XXS1500 systems");
357MODULE_AUTHOR("Manuel Lauss");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-14 22:54:32 -0500