diff options
author | Yong Yao <yaoyong@marvell.com> | 2008-12-29 07:00:02 -0500 |
---|---|---|
committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2008-12-29 07:59:16 -0500 |
commit | e0ee629878d91da998fc26e8fa8b977177f70f39 (patch) | |
tree | 5d8b683198a05200d71874ed8011dce00a12b5c7 /drivers/input/keyboard | |
parent | 105ca2398f89d141b87542d3dd58df90bc539275 (diff) |
Input: add support for enhanced rotary controller on pxa930 and pxa935
Signed-off-by: Yong Yao <yaoyong@marvell.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/keyboard')
-rw-r--r-- | drivers/input/keyboard/Kconfig | 9 | ||||
-rw-r--r-- | drivers/input/keyboard/Makefile | 1 | ||||
-rw-r--r-- | drivers/input/keyboard/pxa930_rotary.c | 212 |
3 files changed, 222 insertions, 0 deletions
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index efd70a974591..35561689ff38 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig | |||
@@ -268,6 +268,15 @@ config KEYBOARD_PXA27x | |||
268 | To compile this driver as a module, choose M here: the | 268 | To compile this driver as a module, choose M here: the |
269 | module will be called pxa27x_keypad. | 269 | module will be called pxa27x_keypad. |
270 | 270 | ||
271 | config KEYBOARD_PXA930_ROTARY | ||
272 | tristate "PXA930/PXA935 Enhanced Rotary Controller Support" | ||
273 | depends on CPU_PXA930 || CPU_PXA935 | ||
274 | help | ||
275 | Enable support for PXA930/PXA935 Enhanced Rotary Controller. | ||
276 | |||
277 | To compile this driver as a module, choose M here: the | ||
278 | module will be called pxa930_rotary. | ||
279 | |||
271 | config KEYBOARD_AAED2000 | 280 | config KEYBOARD_AAED2000 |
272 | tristate "AAED-2000 keyboard" | 281 | tristate "AAED-2000 keyboard" |
273 | depends on MACH_AAED2000 | 282 | depends on MACH_AAED2000 |
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index 0edc8f285d1c..36351e1190f9 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile | |||
@@ -20,6 +20,7 @@ obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o | |||
20 | obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o | 20 | obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o |
21 | obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o | 21 | obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o |
22 | obj-$(CONFIG_KEYBOARD_PXA27x) += pxa27x_keypad.o | 22 | obj-$(CONFIG_KEYBOARD_PXA27x) += pxa27x_keypad.o |
23 | obj-$(CONFIG_KEYBOARD_PXA930_ROTARY) += pxa930_rotary.o | ||
23 | obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o | 24 | obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o |
24 | obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o | 25 | obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o |
25 | obj-$(CONFIG_KEYBOARD_HP6XX) += jornada680_kbd.o | 26 | obj-$(CONFIG_KEYBOARD_HP6XX) += jornada680_kbd.o |
diff --git a/drivers/input/keyboard/pxa930_rotary.c b/drivers/input/keyboard/pxa930_rotary.c new file mode 100644 index 000000000000..95fbba470e65 --- /dev/null +++ b/drivers/input/keyboard/pxa930_rotary.c | |||
@@ -0,0 +1,212 @@ | |||
1 | /* | ||
2 | * Driver for the enhanced rotary controller on pxa930 and pxa935 | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify | ||
5 | * it under the terms of the GNU General Public License version 2 as | ||
6 | * published by the Free Software Foundation. | ||
7 | */ | ||
8 | |||
9 | #include <linux/kernel.h> | ||
10 | #include <linux/module.h> | ||
11 | #include <linux/init.h> | ||
12 | #include <linux/interrupt.h> | ||
13 | #include <linux/input.h> | ||
14 | #include <linux/platform_device.h> | ||
15 | #include <linux/io.h> | ||
16 | |||
17 | #include <mach/pxa930_rotary.h> | ||
18 | |||
19 | #define SBCR (0x04) | ||
20 | #define ERCR (0x0c) | ||
21 | |||
22 | #define SBCR_ERSB (1 << 5) | ||
23 | |||
24 | struct pxa930_rotary { | ||
25 | struct input_dev *input_dev; | ||
26 | void __iomem *mmio_base; | ||
27 | int last_ercr; | ||
28 | |||
29 | struct pxa930_rotary_platform_data *pdata; | ||
30 | }; | ||
31 | |||
32 | static void clear_sbcr(struct pxa930_rotary *r) | ||
33 | { | ||
34 | uint32_t sbcr = __raw_readl(r->mmio_base + SBCR); | ||
35 | |||
36 | __raw_writel(sbcr | SBCR_ERSB, r->mmio_base + SBCR); | ||
37 | __raw_writel(sbcr & ~SBCR_ERSB, r->mmio_base + SBCR); | ||
38 | } | ||
39 | |||
40 | static irqreturn_t rotary_irq(int irq, void *dev_id) | ||
41 | { | ||
42 | struct pxa930_rotary *r = dev_id; | ||
43 | struct pxa930_rotary_platform_data *pdata = r->pdata; | ||
44 | int ercr, delta, key; | ||
45 | |||
46 | ercr = __raw_readl(r->mmio_base + ERCR) & 0xf; | ||
47 | clear_sbcr(r); | ||
48 | |||
49 | delta = ercr - r->last_ercr; | ||
50 | if (delta == 0) | ||
51 | return IRQ_HANDLED; | ||
52 | |||
53 | r->last_ercr = ercr; | ||
54 | |||
55 | if (pdata->up_key && pdata->down_key) { | ||
56 | key = (delta > 0) ? pdata->up_key : pdata->down_key; | ||
57 | input_report_key(r->input_dev, key, 1); | ||
58 | input_sync(r->input_dev); | ||
59 | input_report_key(r->input_dev, key, 0); | ||
60 | } else | ||
61 | input_report_rel(r->input_dev, pdata->rel_code, delta); | ||
62 | |||
63 | input_sync(r->input_dev); | ||
64 | |||
65 | return IRQ_HANDLED; | ||
66 | } | ||
67 | |||
68 | static int pxa930_rotary_open(struct input_dev *dev) | ||
69 | { | ||
70 | struct pxa930_rotary *r = input_get_drvdata(dev); | ||
71 | |||
72 | clear_sbcr(r); | ||
73 | |||
74 | return 0; | ||
75 | } | ||
76 | |||
77 | static void pxa930_rotary_close(struct input_dev *dev) | ||
78 | { | ||
79 | struct pxa930_rotary *r = input_get_drvdata(dev); | ||
80 | |||
81 | clear_sbcr(r); | ||
82 | } | ||
83 | |||
84 | static int __devinit pxa930_rotary_probe(struct platform_device *pdev) | ||
85 | { | ||
86 | struct pxa930_rotary_platform_data *pdata = pdev->dev.platform_data; | ||
87 | struct pxa930_rotary *r; | ||
88 | struct input_dev *input_dev; | ||
89 | struct resource *res; | ||
90 | int irq; | ||
91 | int err; | ||
92 | |||
93 | irq = platform_get_irq(pdev, 0); | ||
94 | if (irq < 0) { | ||
95 | dev_err(&pdev->dev, "no irq for rotary controller\n"); | ||
96 | return -ENXIO; | ||
97 | } | ||
98 | |||
99 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
100 | if (!res) { | ||
101 | dev_err(&pdev->dev, "no I/O memory defined\n"); | ||
102 | return -ENXIO; | ||
103 | } | ||
104 | |||
105 | if (!pdata) { | ||
106 | dev_err(&pdev->dev, "no platform data defined\n"); | ||
107 | return -EINVAL; | ||
108 | } | ||
109 | |||
110 | r = kzalloc(sizeof(struct pxa930_rotary), GFP_KERNEL); | ||
111 | if (!r) | ||
112 | return -ENOMEM; | ||
113 | |||
114 | r->mmio_base = ioremap_nocache(res->start, resource_size(res)); | ||
115 | if (r->mmio_base == NULL) { | ||
116 | dev_err(&pdev->dev, "failed to remap IO memory\n"); | ||
117 | err = -ENXIO; | ||
118 | goto failed_free; | ||
119 | } | ||
120 | |||
121 | r->pdata = pdata; | ||
122 | platform_set_drvdata(pdev, r); | ||
123 | |||
124 | /* allocate and register the input device */ | ||
125 | input_dev = input_allocate_device(); | ||
126 | if (!input_dev) { | ||
127 | dev_err(&pdev->dev, "failed to allocate input device\n"); | ||
128 | err = -ENOMEM; | ||
129 | goto failed_free_io; | ||
130 | } | ||
131 | |||
132 | input_dev->name = pdev->name; | ||
133 | input_dev->id.bustype = BUS_HOST; | ||
134 | input_dev->open = pxa930_rotary_open; | ||
135 | input_dev->close = pxa930_rotary_close; | ||
136 | input_dev->dev.parent = &pdev->dev; | ||
137 | |||
138 | if (pdata->up_key && pdata->down_key) { | ||
139 | __set_bit(pdata->up_key, input_dev->keybit); | ||
140 | __set_bit(pdata->down_key, input_dev->keybit); | ||
141 | __set_bit(EV_KEY, input_dev->evbit); | ||
142 | } else { | ||
143 | __set_bit(pdata->rel_code, input_dev->relbit); | ||
144 | __set_bit(EV_REL, input_dev->evbit); | ||
145 | } | ||
146 | |||
147 | r->input_dev = input_dev; | ||
148 | input_set_drvdata(input_dev, r); | ||
149 | |||
150 | err = request_irq(irq, rotary_irq, IRQF_DISABLED, | ||
151 | "enhanced rotary", r); | ||
152 | if (err) { | ||
153 | dev_err(&pdev->dev, "failed to request IRQ\n"); | ||
154 | goto failed_free_input; | ||
155 | } | ||
156 | |||
157 | err = input_register_device(input_dev); | ||
158 | if (err) { | ||
159 | dev_err(&pdev->dev, "failed to register input device\n"); | ||
160 | goto failed_free_irq; | ||
161 | } | ||
162 | |||
163 | return 0; | ||
164 | |||
165 | failed_free_irq: | ||
166 | free_irq(irq, r); | ||
167 | failed_free_input: | ||
168 | input_free_device(input_dev); | ||
169 | failed_free_io: | ||
170 | iounmap(r->mmio_base); | ||
171 | failed_free: | ||
172 | kfree(r); | ||
173 | return err; | ||
174 | } | ||
175 | |||
176 | static int __devexit pxa930_rotary_remove(struct platform_device *pdev) | ||
177 | { | ||
178 | struct pxa930_rotary *r = platform_get_drvdata(pdev); | ||
179 | |||
180 | free_irq(platform_get_irq(pdev, 0), r); | ||
181 | input_unregister_device(r->input_dev); | ||
182 | iounmap(r->mmio_base); | ||
183 | platform_set_drvdata(pdev, NULL); | ||
184 | kfree(r); | ||
185 | |||
186 | return 0; | ||
187 | } | ||
188 | |||
189 | static struct platform_driver pxa930_rotary_driver = { | ||
190 | .driver = { | ||
191 | .name = "pxa930-rotary", | ||
192 | .owner = THIS_MODULE, | ||
193 | }, | ||
194 | .probe = pxa930_rotary_probe, | ||
195 | .remove = __devexit_p(pxa930_rotary_remove), | ||
196 | }; | ||
197 | |||
198 | static int __init pxa930_rotary_init(void) | ||
199 | { | ||
200 | return platform_driver_register(&pxa930_rotary_driver); | ||
201 | } | ||
202 | module_init(pxa930_rotary_init); | ||
203 | |||
204 | static void __exit pxa930_rotary_exit(void) | ||
205 | { | ||
206 | platform_driver_unregister(&pxa930_rotary_driver); | ||
207 | } | ||
208 | module_exit(pxa930_rotary_exit); | ||
209 | |||
210 | MODULE_LICENSE("GPL"); | ||
211 | MODULE_DESCRIPTION("Driver for PXA93x Enhanced Rotary Controller"); | ||
212 | MODULE_AUTHOR("Yao Yong <yaoyong@marvell.com>"); | ||