diff options
author | Joonyoung Shim <jy0922.shim@samsung.com> | 2009-09-18 01:35:45 -0400 |
---|---|---|
committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-09-18 02:24:03 -0400 |
commit | 38e783b38148531c0840ac130b97eb8158f84b48 (patch) | |
tree | 05a037b42cd196fb7d86603630f8fc6cbc01e008 /drivers/input | |
parent | 422b552debae59b4bebc0ea5fbb9c809d3dfd057 (diff) |
Input: add touchscreen driver for MELFAS MCS-5000 controller
The MELPAS MCS-5000 is the touchscreen controller. The overview of this
controller can see at the following website:
http://www.melfas.com/product/product01.asp?k_r=eng_
This driver is tested on s3c6410 NCP board and supports only the i2c
interface.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input')
-rw-r--r-- | drivers/input/touchscreen/Kconfig | 11 | ||||
-rw-r--r-- | drivers/input/touchscreen/Makefile | 1 | ||||
-rw-r--r-- | drivers/input/touchscreen/mcs5000_ts.c | 318 |
3 files changed, 330 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 5a252d449e55..6dfb0a2b0a7d 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig | |||
@@ -169,6 +169,17 @@ config TOUCHSCREEN_WACOM_W8001 | |||
169 | To compile this driver as a module, choose M here: the | 169 | To compile this driver as a module, choose M here: the |
170 | module will be called wacom_w8001. | 170 | module will be called wacom_w8001. |
171 | 171 | ||
172 | config TOUCHSCREEN_MCS5000 | ||
173 | tristate "MELFAS MCS-5000 touchscreen" | ||
174 | depends on I2C | ||
175 | help | ||
176 | Say Y here if you have the MELFAS MCS-5000 touchscreen controller | ||
177 | chip in your system. | ||
178 | |||
179 | If unsure, say N. | ||
180 | |||
181 | To compile this driver as a module, choose M here: the | ||
182 | module will be called mcs5000_ts. | ||
172 | 183 | ||
173 | config TOUCHSCREEN_MTOUCH | 184 | config TOUCHSCREEN_MTOUCH |
174 | tristate "MicroTouch serial touchscreens" | 185 | tristate "MicroTouch serial touchscreens" |
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 3e1c5e0b952f..a882ca16506b 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile | |||
@@ -17,6 +17,7 @@ obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o | |||
17 | obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o | 17 | obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o |
18 | obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o | 18 | obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o |
19 | obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o | 19 | obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o |
20 | obj-$(CONFIG_TOUCHSCREEN_MCS5000) += mcs5000_ts.o | ||
20 | obj-$(CONFIG_TOUCHSCREEN_MIGOR) += migor_ts.o | 21 | obj-$(CONFIG_TOUCHSCREEN_MIGOR) += migor_ts.o |
21 | obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o | 22 | obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o |
22 | obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o | 23 | obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o |
diff --git a/drivers/input/touchscreen/mcs5000_ts.c b/drivers/input/touchscreen/mcs5000_ts.c new file mode 100644 index 000000000000..4c28b89757f9 --- /dev/null +++ b/drivers/input/touchscreen/mcs5000_ts.c | |||
@@ -0,0 +1,318 @@ | |||
1 | /* | ||
2 | * mcs5000_ts.c - Touchscreen driver for MELFAS MCS-5000 controller | ||
3 | * | ||
4 | * Copyright (C) 2009 Samsung Electronics Co.Ltd | ||
5 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> | ||
6 | * | ||
7 | * Based on wm97xx-core.c | ||
8 | * | ||
9 | * This program is free software; you can redistribute it and/or modify it | ||
10 | * under the terms of the GNU General Public License as published by the | ||
11 | * Free Software Foundation; either version 2 of the License, or (at your | ||
12 | * option) any later version. | ||
13 | * | ||
14 | */ | ||
15 | |||
16 | #include <linux/module.h> | ||
17 | #include <linux/init.h> | ||
18 | #include <linux/i2c.h> | ||
19 | #include <linux/i2c/mcs5000_ts.h> | ||
20 | #include <linux/interrupt.h> | ||
21 | #include <linux/input.h> | ||
22 | #include <linux/irq.h> | ||
23 | |||
24 | /* Registers */ | ||
25 | #define MCS5000_TS_STATUS 0x00 | ||
26 | #define STATUS_OFFSET 0 | ||
27 | #define STATUS_NO (0 << STATUS_OFFSET) | ||
28 | #define STATUS_INIT (1 << STATUS_OFFSET) | ||
29 | #define STATUS_SENSING (2 << STATUS_OFFSET) | ||
30 | #define STATUS_COORD (3 << STATUS_OFFSET) | ||
31 | #define STATUS_GESTURE (4 << STATUS_OFFSET) | ||
32 | #define ERROR_OFFSET 4 | ||
33 | #define ERROR_NO (0 << ERROR_OFFSET) | ||
34 | #define ERROR_POWER_ON_RESET (1 << ERROR_OFFSET) | ||
35 | #define ERROR_INT_RESET (2 << ERROR_OFFSET) | ||
36 | #define ERROR_EXT_RESET (3 << ERROR_OFFSET) | ||
37 | #define ERROR_INVALID_REG_ADDRESS (8 << ERROR_OFFSET) | ||
38 | #define ERROR_INVALID_REG_VALUE (9 << ERROR_OFFSET) | ||
39 | |||
40 | #define MCS5000_TS_OP_MODE 0x01 | ||
41 | #define RESET_OFFSET 0 | ||
42 | #define RESET_NO (0 << RESET_OFFSET) | ||
43 | #define RESET_EXT_SOFT (1 << RESET_OFFSET) | ||
44 | #define OP_MODE_OFFSET 1 | ||
45 | #define OP_MODE_SLEEP (0 << OP_MODE_OFFSET) | ||
46 | #define OP_MODE_ACTIVE (1 << OP_MODE_OFFSET) | ||
47 | #define GESTURE_OFFSET 4 | ||
48 | #define GESTURE_DISABLE (0 << GESTURE_OFFSET) | ||
49 | #define GESTURE_ENABLE (1 << GESTURE_OFFSET) | ||
50 | #define PROXIMITY_OFFSET 5 | ||
51 | #define PROXIMITY_DISABLE (0 << PROXIMITY_OFFSET) | ||
52 | #define PROXIMITY_ENABLE (1 << PROXIMITY_OFFSET) | ||
53 | #define SCAN_MODE_OFFSET 6 | ||
54 | #define SCAN_MODE_INTERRUPT (0 << SCAN_MODE_OFFSET) | ||
55 | #define SCAN_MODE_POLLING (1 << SCAN_MODE_OFFSET) | ||
56 | #define REPORT_RATE_OFFSET 7 | ||
57 | #define REPORT_RATE_40 (0 << REPORT_RATE_OFFSET) | ||
58 | #define REPORT_RATE_80 (1 << REPORT_RATE_OFFSET) | ||
59 | |||
60 | #define MCS5000_TS_SENS_CTL 0x02 | ||
61 | #define MCS5000_TS_FILTER_CTL 0x03 | ||
62 | #define PRI_FILTER_OFFSET 0 | ||
63 | #define SEC_FILTER_OFFSET 4 | ||
64 | |||
65 | #define MCS5000_TS_X_SIZE_UPPER 0x08 | ||
66 | #define MCS5000_TS_X_SIZE_LOWER 0x09 | ||
67 | #define MCS5000_TS_Y_SIZE_UPPER 0x0A | ||
68 | #define MCS5000_TS_Y_SIZE_LOWER 0x0B | ||
69 | |||
70 | #define MCS5000_TS_INPUT_INFO 0x10 | ||
71 | #define INPUT_TYPE_OFFSET 0 | ||
72 | #define INPUT_TYPE_NONTOUCH (0 << INPUT_TYPE_OFFSET) | ||
73 | #define INPUT_TYPE_SINGLE (1 << INPUT_TYPE_OFFSET) | ||
74 | #define INPUT_TYPE_DUAL (2 << INPUT_TYPE_OFFSET) | ||
75 | #define INPUT_TYPE_PALM (3 << INPUT_TYPE_OFFSET) | ||
76 | #define INPUT_TYPE_PROXIMITY (7 << INPUT_TYPE_OFFSET) | ||
77 | #define GESTURE_CODE_OFFSET 3 | ||
78 | #define GESTURE_CODE_NO (0 << GESTURE_CODE_OFFSET) | ||
79 | |||
80 | #define MCS5000_TS_X_POS_UPPER 0x11 | ||
81 | #define MCS5000_TS_X_POS_LOWER 0x12 | ||
82 | #define MCS5000_TS_Y_POS_UPPER 0x13 | ||
83 | #define MCS5000_TS_Y_POS_LOWER 0x14 | ||
84 | #define MCS5000_TS_Z_POS 0x15 | ||
85 | #define MCS5000_TS_WIDTH 0x16 | ||
86 | #define MCS5000_TS_GESTURE_VAL 0x17 | ||
87 | #define MCS5000_TS_MODULE_REV 0x20 | ||
88 | #define MCS5000_TS_FIRMWARE_VER 0x21 | ||
89 | |||
90 | /* Touchscreen absolute values */ | ||
91 | #define MCS5000_MAX_XC 0x3ff | ||
92 | #define MCS5000_MAX_YC 0x3ff | ||
93 | |||
94 | enum mcs5000_ts_read_offset { | ||
95 | READ_INPUT_INFO, | ||
96 | READ_X_POS_UPPER, | ||
97 | READ_X_POS_LOWER, | ||
98 | READ_Y_POS_UPPER, | ||
99 | READ_Y_POS_LOWER, | ||
100 | READ_BLOCK_SIZE, | ||
101 | }; | ||
102 | |||
103 | /* Each client has this additional data */ | ||
104 | struct mcs5000_ts_data { | ||
105 | struct i2c_client *client; | ||
106 | struct input_dev *input_dev; | ||
107 | const struct mcs5000_ts_platform_data *platform_data; | ||
108 | }; | ||
109 | |||
110 | static irqreturn_t mcs5000_ts_interrupt(int irq, void *dev_id) | ||
111 | { | ||
112 | struct mcs5000_ts_data *data = dev_id; | ||
113 | struct i2c_client *client = data->client; | ||
114 | u8 buffer[READ_BLOCK_SIZE]; | ||
115 | int err; | ||
116 | int x; | ||
117 | int y; | ||
118 | |||
119 | err = i2c_smbus_read_i2c_block_data(client, MCS5000_TS_INPUT_INFO, | ||
120 | READ_BLOCK_SIZE, buffer); | ||
121 | if (err < 0) { | ||
122 | dev_err(&client->dev, "%s, err[%d]\n", __func__, err); | ||
123 | goto out; | ||
124 | } | ||
125 | |||
126 | switch (buffer[READ_INPUT_INFO]) { | ||
127 | case INPUT_TYPE_NONTOUCH: | ||
128 | input_report_key(data->input_dev, BTN_TOUCH, 0); | ||
129 | input_sync(data->input_dev); | ||
130 | break; | ||
131 | |||
132 | case INPUT_TYPE_SINGLE: | ||
133 | x = (buffer[READ_X_POS_UPPER] << 8) | buffer[READ_X_POS_LOWER]; | ||
134 | y = (buffer[READ_Y_POS_UPPER] << 8) | buffer[READ_Y_POS_LOWER]; | ||
135 | |||
136 | input_report_key(data->input_dev, BTN_TOUCH, 1); | ||
137 | input_report_abs(data->input_dev, ABS_X, x); | ||
138 | input_report_abs(data->input_dev, ABS_Y, y); | ||
139 | input_sync(data->input_dev); | ||
140 | break; | ||
141 | |||
142 | case INPUT_TYPE_DUAL: | ||
143 | /* TODO */ | ||
144 | break; | ||
145 | |||
146 | case INPUT_TYPE_PALM: | ||
147 | /* TODO */ | ||
148 | break; | ||
149 | |||
150 | case INPUT_TYPE_PROXIMITY: | ||
151 | /* TODO */ | ||
152 | break; | ||
153 | |||
154 | default: | ||
155 | dev_err(&client->dev, "Unknown ts input type %d\n", | ||
156 | buffer[READ_INPUT_INFO]); | ||
157 | break; | ||
158 | } | ||
159 | |||
160 | out: | ||
161 | return IRQ_HANDLED; | ||
162 | } | ||
163 | |||
164 | static void mcs5000_ts_phys_init(struct mcs5000_ts_data *data) | ||
165 | { | ||
166 | const struct mcs5000_ts_platform_data *platform_data = | ||
167 | data->platform_data; | ||
168 | struct i2c_client *client = data->client; | ||
169 | |||
170 | /* Touch reset & sleep mode */ | ||
171 | i2c_smbus_write_byte_data(client, MCS5000_TS_OP_MODE, | ||
172 | RESET_EXT_SOFT | OP_MODE_SLEEP); | ||
173 | |||
174 | /* Touch size */ | ||
175 | i2c_smbus_write_byte_data(client, MCS5000_TS_X_SIZE_UPPER, | ||
176 | platform_data->x_size >> 8); | ||
177 | i2c_smbus_write_byte_data(client, MCS5000_TS_X_SIZE_LOWER, | ||
178 | platform_data->x_size & 0xff); | ||
179 | i2c_smbus_write_byte_data(client, MCS5000_TS_Y_SIZE_UPPER, | ||
180 | platform_data->y_size >> 8); | ||
181 | i2c_smbus_write_byte_data(client, MCS5000_TS_Y_SIZE_LOWER, | ||
182 | platform_data->y_size & 0xff); | ||
183 | |||
184 | /* Touch active mode & 80 report rate */ | ||
185 | i2c_smbus_write_byte_data(data->client, MCS5000_TS_OP_MODE, | ||
186 | OP_MODE_ACTIVE | REPORT_RATE_80); | ||
187 | } | ||
188 | |||
189 | static int __devinit mcs5000_ts_probe(struct i2c_client *client, | ||
190 | const struct i2c_device_id *id) | ||
191 | { | ||
192 | struct mcs5000_ts_data *data; | ||
193 | struct input_dev *input_dev; | ||
194 | int ret; | ||
195 | |||
196 | if (!client->dev.platform_data) | ||
197 | return -EINVAL; | ||
198 | |||
199 | data = kzalloc(sizeof(struct mcs5000_ts_data), GFP_KERNEL); | ||
200 | input_dev = input_allocate_device(); | ||
201 | if (!data || !input_dev) { | ||
202 | dev_err(&client->dev, "Failed to allocate memory\n"); | ||
203 | ret = -ENOMEM; | ||
204 | goto err_free_mem; | ||
205 | } | ||
206 | |||
207 | data->client = client; | ||
208 | data->input_dev = input_dev; | ||
209 | data->platform_data = client->dev.platform_data; | ||
210 | |||
211 | input_dev->name = "MELPAS MCS-5000 Touchscreen"; | ||
212 | input_dev->id.bustype = BUS_I2C; | ||
213 | input_dev->dev.parent = &client->dev; | ||
214 | |||
215 | __set_bit(EV_ABS, input_dev->evbit); | ||
216 | __set_bit(EV_KEY, input_dev->evbit); | ||
217 | __set_bit(BTN_TOUCH, input_dev->keybit); | ||
218 | input_set_abs_params(input_dev, ABS_X, 0, MCS5000_MAX_XC, 0, 0); | ||
219 | input_set_abs_params(input_dev, ABS_Y, 0, MCS5000_MAX_YC, 0, 0); | ||
220 | |||
221 | input_set_drvdata(input_dev, data); | ||
222 | |||
223 | if (data->platform_data->cfg_pin) | ||
224 | data->platform_data->cfg_pin(); | ||
225 | |||
226 | ret = request_threaded_irq(client->irq, NULL, mcs5000_ts_interrupt, | ||
227 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, "mcs5000_ts", data); | ||
228 | |||
229 | if (ret < 0) { | ||
230 | dev_err(&client->dev, "Failed to register interrupt\n"); | ||
231 | goto err_free_mem; | ||
232 | } | ||
233 | |||
234 | ret = input_register_device(data->input_dev); | ||
235 | if (ret < 0) | ||
236 | goto err_free_irq; | ||
237 | |||
238 | mcs5000_ts_phys_init(data); | ||
239 | i2c_set_clientdata(client, data); | ||
240 | |||
241 | return 0; | ||
242 | |||
243 | err_free_irq: | ||
244 | free_irq(client->irq, data); | ||
245 | err_free_mem: | ||
246 | input_free_device(input_dev); | ||
247 | kfree(data); | ||
248 | return ret; | ||
249 | } | ||
250 | |||
251 | static int __devexit mcs5000_ts_remove(struct i2c_client *client) | ||
252 | { | ||
253 | struct mcs5000_ts_data *data = i2c_get_clientdata(client); | ||
254 | |||
255 | free_irq(client->irq, data); | ||
256 | input_unregister_device(data->input_dev); | ||
257 | kfree(data); | ||
258 | i2c_set_clientdata(client, NULL); | ||
259 | |||
260 | return 0; | ||
261 | } | ||
262 | |||
263 | #ifdef CONFIG_PM | ||
264 | static int mcs5000_ts_suspend(struct i2c_client *client, pm_message_t mesg) | ||
265 | { | ||
266 | /* Touch sleep mode */ | ||
267 | i2c_smbus_write_byte_data(client, MCS5000_TS_OP_MODE, OP_MODE_SLEEP); | ||
268 | |||
269 | return 0; | ||
270 | } | ||
271 | |||
272 | static int mcs5000_ts_resume(struct i2c_client *client) | ||
273 | { | ||
274 | struct mcs5000_ts_data *data = i2c_get_clientdata(client); | ||
275 | |||
276 | mcs5000_ts_phys_init(data); | ||
277 | |||
278 | return 0; | ||
279 | } | ||
280 | #else | ||
281 | #define mcs5000_ts_suspend NULL | ||
282 | #define mcs5000_ts_resume NULL | ||
283 | #endif | ||
284 | |||
285 | static const struct i2c_device_id mcs5000_ts_id[] = { | ||
286 | { "mcs5000_ts", 0 }, | ||
287 | { } | ||
288 | }; | ||
289 | MODULE_DEVICE_TABLE(i2c, mcs5000_ts_id); | ||
290 | |||
291 | static struct i2c_driver mcs5000_ts_driver = { | ||
292 | .probe = mcs5000_ts_probe, | ||
293 | .remove = __devexit_p(mcs5000_ts_remove), | ||
294 | .suspend = mcs5000_ts_suspend, | ||
295 | .resume = mcs5000_ts_resume, | ||
296 | .driver = { | ||
297 | .name = "mcs5000_ts", | ||
298 | }, | ||
299 | .id_table = mcs5000_ts_id, | ||
300 | }; | ||
301 | |||
302 | static int __init mcs5000_ts_init(void) | ||
303 | { | ||
304 | return i2c_add_driver(&mcs5000_ts_driver); | ||
305 | } | ||
306 | |||
307 | static void __exit mcs5000_ts_exit(void) | ||
308 | { | ||
309 | i2c_del_driver(&mcs5000_ts_driver); | ||
310 | } | ||
311 | |||
312 | module_init(mcs5000_ts_init); | ||
313 | module_exit(mcs5000_ts_exit); | ||
314 | |||
315 | /* Module information */ | ||
316 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | ||
317 | MODULE_DESCRIPTION("Touchscreen driver for MELFAS MCS-5000 controller"); | ||
318 | MODULE_LICENSE("GPL"); | ||