diff options
author | Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com> | 2010-11-02 08:08:45 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-09 18:28:08 -0500 |
commit | eba499d3e376983f4d521bac05bf7e9a634ace2f (patch) | |
tree | 6bd271acab3fc51758284156caa040e58ffe0b39 /drivers/staging/ste_rmi4 | |
parent | 78fd115e21087133be74bc6dd7a9bc1969aea8f8 (diff) |
Staging: add Synaptics RMI4 touchpad driver support
Added the Synaptics RMI4 touchpad driver support.
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Christopher Heiny <cheiny@synaptics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/ste_rmi4')
-rw-r--r-- | drivers/staging/ste_rmi4/Kconfig | 9 | ||||
-rw-r--r-- | drivers/staging/ste_rmi4/Makefile | 4 | ||||
-rw-r--r-- | drivers/staging/ste_rmi4/TODO | 7 | ||||
-rw-r--r-- | drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c | 1179 | ||||
-rw-r--r-- | drivers/staging/ste_rmi4/synaptics_i2c_rmi4.h | 50 |
5 files changed, 1249 insertions, 0 deletions
diff --git a/drivers/staging/ste_rmi4/Kconfig b/drivers/staging/ste_rmi4/Kconfig new file mode 100644 index 00000000000..95fd5a915f0 --- /dev/null +++ b/drivers/staging/ste_rmi4/Kconfig | |||
@@ -0,0 +1,9 @@ | |||
1 | config TOUCHSCREEN_SYNAPTICS_I2C_RMI4 | ||
2 | tristate "Synaptics i2c rmi4 touchscreen" | ||
3 | depends on I2C | ||
4 | help | ||
5 | Say Y here if you have a Synaptics RMI4 and | ||
6 | want to enable support for the built-in touchscreen. | ||
7 | |||
8 | To compile this driver as a module, choose M here: the | ||
9 | module will be called synaptics_rmi4_ts. | ||
diff --git a/drivers/staging/ste_rmi4/Makefile b/drivers/staging/ste_rmi4/Makefile new file mode 100644 index 00000000000..6cce2ed187e --- /dev/null +++ b/drivers/staging/ste_rmi4/Makefile | |||
@@ -0,0 +1,4 @@ | |||
1 | # | ||
2 | # Makefile for the RMI4 touchscreen driver. | ||
3 | # | ||
4 | obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4) += synaptics_i2c_rmi4.o | ||
diff --git a/drivers/staging/ste_rmi4/TODO b/drivers/staging/ste_rmi4/TODO new file mode 100644 index 00000000000..9be2437da85 --- /dev/null +++ b/drivers/staging/ste_rmi4/TODO | |||
@@ -0,0 +1,7 @@ | |||
1 | TODO | ||
2 | ---- | ||
3 | |||
4 | Wait for the official upstream synaptics rmi4 clearpad drivers as promised over the past few months | ||
5 | Merge any device support needed from this driver into it | ||
6 | Delete this driver | ||
7 | |||
diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c new file mode 100644 index 00000000000..e8f047e86a3 --- /dev/null +++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c | |||
@@ -0,0 +1,1179 @@ | |||
1 | /** | ||
2 | * | ||
3 | * Synaptics Register Mapped Interface (RMI4) I2C Physical Layer Driver. | ||
4 | * Copyright (c) 2007-2010, Synaptics Incorporated | ||
5 | * | ||
6 | * Author: Js HA <js.ha@stericsson.com> for ST-Ericsson | ||
7 | * Author: Naveen Kumar G <naveen.gaddipati@stericsson.com> for ST-Ericsson | ||
8 | * Copyright 2010 (c) ST-Ericsson AB | ||
9 | */ | ||
10 | /* | ||
11 | * This file is licensed under the GPL2 license. | ||
12 | * | ||
13 | *############################################################################# | ||
14 | * GPL | ||
15 | * | ||
16 | * This program is free software; you can redistribute it and/or modify it | ||
17 | * under the terms of the GNU General Public License version 2 as published | ||
18 | * by the Free Software Foundation. | ||
19 | * | ||
20 | * This program is distributed in the hope that it will be useful, but | ||
21 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | ||
22 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
23 | * for more details. | ||
24 | * | ||
25 | *############################################################################# | ||
26 | */ | ||
27 | |||
28 | #include <linux/input.h> | ||
29 | #include <linux/slab.h> | ||
30 | #include <linux/i2c.h> | ||
31 | #include <linux/interrupt.h> | ||
32 | #include <linux/regulator/consumer.h> | ||
33 | #include "synaptics_i2c_rmi4.h" | ||
34 | |||
35 | /* TODO: for multiple device support will need a per-device mutex */ | ||
36 | #define DRIVER_NAME "synaptics_rmi4_i2c" | ||
37 | |||
38 | #define MAX_ERROR_REPORT 6 | ||
39 | #define MAX_TOUCH_MAJOR 15 | ||
40 | #define MAX_RETRY_COUNT 5 | ||
41 | #define STD_QUERY_LEN 21 | ||
42 | #define PAGE_LEN 2 | ||
43 | #define DATA_BUF_LEN 32 | ||
44 | #define BUF_LEN 37 | ||
45 | #define QUERY_LEN 9 | ||
46 | #define DATA_LEN 12 | ||
47 | #define HAS_TAP 0x01 | ||
48 | #define HAS_PALMDETECT 0x01 | ||
49 | #define HAS_ROTATE 0x02 | ||
50 | #define HAS_TAPANDHOLD 0x02 | ||
51 | #define HAS_DOUBLETAP 0x04 | ||
52 | #define HAS_EARLYTAP 0x08 | ||
53 | #define HAS_RELEASE 0x08 | ||
54 | #define HAS_FLICK 0x10 | ||
55 | #define HAS_PRESS 0x20 | ||
56 | #define HAS_PINCH 0x40 | ||
57 | |||
58 | #define MASK_16BIT 0xFFFF | ||
59 | #define MASK_8BIT 0xFF | ||
60 | #define MASK_7BIT 0x7F | ||
61 | #define MASK_5BIT 0x1F | ||
62 | #define MASK_4BIT 0x0F | ||
63 | #define MASK_3BIT 0x07 | ||
64 | #define MASK_2BIT 0x03 | ||
65 | #define TOUCHPAD_CTRL_INTR 0x8 | ||
66 | #define PDT_START_SCAN_LOCATION (0x00E9) | ||
67 | #define PDT_END_SCAN_LOCATION (0x000A) | ||
68 | #define PDT_ENTRY_SIZE (0x0006) | ||
69 | #define RMI4_NUMBER_OF_MAX_FINGERS (8) | ||
70 | #define SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM (0x11) | ||
71 | #define SYNAPTICS_RMI4_DEVICE_CONTROL_FUNC_NUM (0x01) | ||
72 | |||
73 | /** | ||
74 | * struct synaptics_rmi4_fn_desc - contains the funtion descriptor information | ||
75 | * @query_base_addr: base address for query | ||
76 | * @cmd_base_addr: base address for command | ||
77 | * @ctrl_base_addr: base address for control | ||
78 | * @data_base_addr: base address for data | ||
79 | * @intr_src_count: count for the interrupt source | ||
80 | * @fn_number: function number | ||
81 | * | ||
82 | * This structure is used to gives the function descriptor information | ||
83 | * of the particular functionality. | ||
84 | */ | ||
85 | struct synaptics_rmi4_fn_desc { | ||
86 | unsigned char query_base_addr; | ||
87 | unsigned char cmd_base_addr; | ||
88 | unsigned char ctrl_base_addr; | ||
89 | unsigned char data_base_addr; | ||
90 | unsigned char intr_src_count; | ||
91 | unsigned char fn_number; | ||
92 | }; | ||
93 | |||
94 | /** | ||
95 | * struct synaptics_rmi4_fn - contains the funtion information | ||
96 | * @fn_number: function number | ||
97 | * @num_of_data_sources: number of data sources | ||
98 | * @num_of_data_points: number of fingers touched | ||
99 | * @size_of_data_register_block: data register block size | ||
100 | * @index_to_intr_reg: index for interrupt register | ||
101 | * @intr_mask: interrupt mask value | ||
102 | * @fn_desc: variable for function descriptor structure | ||
103 | * @link: linked list for function descriptors | ||
104 | * | ||
105 | * This structure gives information about the number of data sources and | ||
106 | * the number of data registers associated with the function. | ||
107 | */ | ||
108 | struct synaptics_rmi4_fn { | ||
109 | unsigned char fn_number; | ||
110 | unsigned char num_of_data_sources; | ||
111 | unsigned char num_of_data_points; | ||
112 | unsigned char size_of_data_register_block; | ||
113 | unsigned char index_to_intr_reg; | ||
114 | unsigned char intr_mask; | ||
115 | struct synaptics_rmi4_fn_desc fn_desc; | ||
116 | struct list_head link; | ||
117 | }; | ||
118 | |||
119 | /** | ||
120 | * struct synaptics_rmi4_device_info - contains the rmi4 device information | ||
121 | * @version_major: protocol major version number | ||
122 | * @version_minor: protocol minor version number | ||
123 | * @manufacturer_id: manufacturer identification byte | ||
124 | * @product_props: product properties information | ||
125 | * @product_info: product info array | ||
126 | * @date_code: device manufacture date | ||
127 | * @tester_id: tester id array | ||
128 | * @serial_number: serial number for that device | ||
129 | * @product_id_string: product id for the device | ||
130 | * @support_fn_list: linked list for device information | ||
131 | * | ||
132 | * This structure gives information about the number of data sources and | ||
133 | * the number of data registers associated with the function. | ||
134 | */ | ||
135 | struct synaptics_rmi4_device_info { | ||
136 | unsigned int version_major; | ||
137 | unsigned int version_minor; | ||
138 | unsigned char manufacturer_id; | ||
139 | unsigned char product_props; | ||
140 | unsigned char product_info[2]; | ||
141 | unsigned char date_code[3]; | ||
142 | unsigned short tester_id; | ||
143 | unsigned short serial_number; | ||
144 | unsigned char product_id_string[11]; | ||
145 | struct list_head support_fn_list; | ||
146 | }; | ||
147 | |||
148 | /** | ||
149 | * struct synaptics_rmi4_data - contains the rmi4 device data | ||
150 | * @rmi4_mod_info: structure variable for rmi4 device info | ||
151 | * @input_dev: pointer for input device | ||
152 | * @i2c_client: pointer for i2c client | ||
153 | * @board: constant pointer for touch platform data | ||
154 | * @fn_list_mutex: mutex for funtion list | ||
155 | * @rmi4_page_mutex: mutex for rmi4 page | ||
156 | * @current_page: variable for integer | ||
157 | * @number_of_interrupt_register: interrupt registers count | ||
158 | * @fn01_ctrl_base_addr: control base address for fn01 | ||
159 | * @fn01_query_base_addr: query base address for fn01 | ||
160 | * @fn01_data_base_addr: data base address for fn01 | ||
161 | * @sensor_max_x: sensor maximum x value | ||
162 | * @sensor_max_y: sensor maximum y value | ||
163 | * @regulator: pointer to the regulator structure | ||
164 | * @wait: wait queue structure variable | ||
165 | * @touch_stopped: flag to stop the thread function | ||
166 | * | ||
167 | * This structure gives the device data information. | ||
168 | */ | ||
169 | struct synaptics_rmi4_data { | ||
170 | struct synaptics_rmi4_device_info rmi4_mod_info; | ||
171 | struct input_dev *input_dev; | ||
172 | struct i2c_client *i2c_client; | ||
173 | const struct synaptics_rmi4_platform_data *board; | ||
174 | struct mutex fn_list_mutex; | ||
175 | struct mutex rmi4_page_mutex; | ||
176 | int current_page; | ||
177 | unsigned int number_of_interrupt_register; | ||
178 | unsigned short fn01_ctrl_base_addr; | ||
179 | unsigned short fn01_query_base_addr; | ||
180 | unsigned short fn01_data_base_addr; | ||
181 | int sensor_max_x; | ||
182 | int sensor_max_y; | ||
183 | struct regulator *regulator; | ||
184 | wait_queue_head_t wait; | ||
185 | bool touch_stopped; | ||
186 | }; | ||
187 | |||
188 | /** | ||
189 | * synaptics_rmi4_set_page() - sets the page | ||
190 | * @pdata: pointer to synaptics_rmi4_data structure | ||
191 | * @address: set the address of the page | ||
192 | * | ||
193 | * This function is used to set the page and returns integer. | ||
194 | */ | ||
195 | static int synaptics_rmi4_set_page(struct synaptics_rmi4_data *pdata, | ||
196 | unsigned int address) | ||
197 | { | ||
198 | unsigned char txbuf[PAGE_LEN]; | ||
199 | int retval; | ||
200 | unsigned int page; | ||
201 | struct i2c_client *i2c = pdata->i2c_client; | ||
202 | |||
203 | page = ((address >> 8) & MASK_8BIT); | ||
204 | if (page != pdata->current_page) { | ||
205 | txbuf[0] = MASK_8BIT; | ||
206 | txbuf[1] = page; | ||
207 | retval = i2c_master_send(i2c, txbuf, PAGE_LEN); | ||
208 | if (retval != PAGE_LEN) | ||
209 | dev_err(&i2c->dev, "%s:failed:%d\n", __func__, retval); | ||
210 | else | ||
211 | pdata->current_page = page; | ||
212 | } else | ||
213 | retval = PAGE_LEN; | ||
214 | return retval; | ||
215 | } | ||
216 | /** | ||
217 | * synaptics_rmi4_i2c_block_read() - read the block of data | ||
218 | * @pdata: pointer to synaptics_rmi4_data structure | ||
219 | * @address: read the block of data from this offset | ||
220 | * @valp: pointer to a buffer containing the data to be read | ||
221 | * @size: number of bytes to read | ||
222 | * | ||
223 | * This function is to read the block of data and returns integer. | ||
224 | */ | ||
225 | static int synaptics_rmi4_i2c_block_read(struct synaptics_rmi4_data *pdata, | ||
226 | unsigned short address, | ||
227 | unsigned char *valp, int size) | ||
228 | { | ||
229 | int retval = 0; | ||
230 | int retry_count = 0; | ||
231 | int index; | ||
232 | struct i2c_client *i2c = pdata->i2c_client; | ||
233 | |||
234 | mutex_lock(&(pdata->rmi4_page_mutex)); | ||
235 | retval = synaptics_rmi4_set_page(pdata, address); | ||
236 | if (retval != PAGE_LEN) | ||
237 | goto exit; | ||
238 | index = address & MASK_8BIT; | ||
239 | retry: | ||
240 | retval = i2c_smbus_read_i2c_block_data(i2c, index, size, valp); | ||
241 | if (retval != size) { | ||
242 | if (++retry_count == MAX_RETRY_COUNT) | ||
243 | dev_err(&i2c->dev, | ||
244 | "%s:address 0x%04x size %d failed:%d\n", | ||
245 | __func__, address, size, retval); | ||
246 | else { | ||
247 | synaptics_rmi4_set_page(pdata, address); | ||
248 | goto retry; | ||
249 | } | ||
250 | } | ||
251 | exit: | ||
252 | mutex_unlock(&(pdata->rmi4_page_mutex)); | ||
253 | return retval; | ||
254 | } | ||
255 | |||
256 | /** | ||
257 | * synaptics_rmi4_i2c_byte_write() - write the single byte data | ||
258 | * @pdata: pointer to synaptics_rmi4_data structure | ||
259 | * @address: write the block of data from this offset | ||
260 | * @data: data to be write | ||
261 | * | ||
262 | * This function is to write the single byte data and returns integer. | ||
263 | */ | ||
264 | static int synaptics_rmi4_i2c_byte_write(struct synaptics_rmi4_data *pdata, | ||
265 | unsigned short address, | ||
266 | unsigned char data) | ||
267 | { | ||
268 | unsigned char txbuf[2]; | ||
269 | int retval = 0; | ||
270 | struct i2c_client *i2c = pdata->i2c_client; | ||
271 | |||
272 | /* Can't have anyone else changing the page behind our backs */ | ||
273 | mutex_lock(&(pdata->rmi4_page_mutex)); | ||
274 | |||
275 | retval = synaptics_rmi4_set_page(pdata, address); | ||
276 | if (retval != PAGE_LEN) | ||
277 | goto exit; | ||
278 | txbuf[0] = address & MASK_8BIT; | ||
279 | txbuf[1] = data; | ||
280 | retval = i2c_master_send(pdata->i2c_client, txbuf, 2); | ||
281 | /* Add in retry on writes only in certian error return values */ | ||
282 | if (retval != 2) { | ||
283 | dev_err(&i2c->dev, "%s:failed:%d\n", __func__, retval); | ||
284 | retval = -EIO; | ||
285 | } else | ||
286 | retval = 1; | ||
287 | exit: | ||
288 | mutex_unlock(&(pdata->rmi4_page_mutex)); | ||
289 | return retval; | ||
290 | } | ||
291 | |||
292 | /** | ||
293 | * synpatics_rmi4_touchpad_report() - reports for the rmi4 touchpad device | ||
294 | * @pdata: pointer to synaptics_rmi4_data structure | ||
295 | * @rfi: pointer to synaptics_rmi4_fn structure | ||
296 | * | ||
297 | * This function calls to reports for the rmi4 touchpad device | ||
298 | */ | ||
299 | static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, | ||
300 | struct synaptics_rmi4_fn *rfi) | ||
301 | { | ||
302 | /* number of touch points - fingers down in this case */ | ||
303 | int touch_count = 0; | ||
304 | int finger; | ||
305 | int fingers_supported; | ||
306 | int finger_registers; | ||
307 | int reg; | ||
308 | int finger_shift; | ||
309 | int finger_status; | ||
310 | int retval; | ||
311 | unsigned short data_base_addr; | ||
312 | unsigned short data_offset; | ||
313 | unsigned char data_reg_blk_size; | ||
314 | unsigned char values[2]; | ||
315 | unsigned char data[DATA_LEN]; | ||
316 | int x[RMI4_NUMBER_OF_MAX_FINGERS]; | ||
317 | int y[RMI4_NUMBER_OF_MAX_FINGERS]; | ||
318 | int wx[RMI4_NUMBER_OF_MAX_FINGERS]; | ||
319 | int wy[RMI4_NUMBER_OF_MAX_FINGERS]; | ||
320 | struct i2c_client *client = pdata->i2c_client; | ||
321 | |||
322 | /* get 2D sensor finger data */ | ||
323 | /* | ||
324 | * First get the finger status field - the size of the finger status | ||
325 | * field is determined by the number of finger supporte - 2 bits per | ||
326 | * finger, so the number of registers to read is: | ||
327 | * registerCount = ceil(numberOfFingers/4). | ||
328 | * Read the required number of registers and check each 2 bit field to | ||
329 | * determine if a finger is down: | ||
330 | * 00 = finger not present, | ||
331 | * 01 = finger present and data accurate, | ||
332 | * 10 = finger present but data may not be accurate, | ||
333 | * 11 = reserved for product use. | ||
334 | */ | ||
335 | fingers_supported = rfi->num_of_data_points; | ||
336 | finger_registers = (fingers_supported + 3)/4; | ||
337 | data_base_addr = rfi->fn_desc.data_base_addr; | ||
338 | retval = synaptics_rmi4_i2c_block_read(pdata, data_base_addr, values, | ||
339 | finger_registers); | ||
340 | if (retval != finger_registers) { | ||
341 | dev_err(&client->dev, "%s:read status registers failed\n", | ||
342 | __func__); | ||
343 | return 0; | ||
344 | } | ||
345 | /* | ||
346 | * For each finger present, read the proper number of registers | ||
347 | * to get absolute data. | ||
348 | */ | ||
349 | data_reg_blk_size = rfi->size_of_data_register_block; | ||
350 | for (finger = 0; finger < fingers_supported; finger++) { | ||
351 | /* determine which data byte the finger status is in */ | ||
352 | reg = finger/4; | ||
353 | /* bit shift to get finger's status */ | ||
354 | finger_shift = (finger % 4) * 2; | ||
355 | finger_status = (values[reg] >> finger_shift) & 3; | ||
356 | /* | ||
357 | * if finger status indicates a finger is present then | ||
358 | * read the finger data and report it | ||
359 | */ | ||
360 | if (finger_status == 1 || finger_status == 2) { | ||
361 | /* Read the finger data */ | ||
362 | data_offset = data_base_addr + | ||
363 | ((finger * data_reg_blk_size) + | ||
364 | finger_registers); | ||
365 | retval = synaptics_rmi4_i2c_block_read(pdata, | ||
366 | data_offset, data, | ||
367 | data_reg_blk_size); | ||
368 | if (retval != data_reg_blk_size) { | ||
369 | printk(KERN_ERR "%s:read data failed\n", | ||
370 | __func__); | ||
371 | return 0; | ||
372 | } else { | ||
373 | x[touch_count] = | ||
374 | (data[0] << 4) | (data[2] & MASK_4BIT); | ||
375 | y[touch_count] = | ||
376 | (data[1] << 4) | | ||
377 | ((data[2] >> 4) & MASK_4BIT); | ||
378 | wy[touch_count] = | ||
379 | (data[3] >> 4) & MASK_4BIT; | ||
380 | wx[touch_count] = | ||
381 | (data[3] & MASK_4BIT); | ||
382 | |||
383 | if (pdata->board->x_flip) | ||
384 | x[touch_count] = | ||
385 | pdata->sensor_max_x - | ||
386 | x[touch_count]; | ||
387 | if (pdata->board->y_flip) | ||
388 | y[touch_count] = | ||
389 | pdata->sensor_max_y - | ||
390 | y[touch_count]; | ||
391 | } | ||
392 | /* number of active touch points */ | ||
393 | touch_count++; | ||
394 | } | ||
395 | } | ||
396 | |||
397 | /* report to input subsystem */ | ||
398 | if (touch_count) { | ||
399 | for (finger = 0; finger < touch_count; finger++) { | ||
400 | input_report_abs(pdata->input_dev, ABS_MT_TOUCH_MAJOR, | ||
401 | max(wx[finger] , wy[finger])); | ||
402 | input_report_abs(pdata->input_dev, ABS_MT_POSITION_X, | ||
403 | x[finger]); | ||
404 | input_report_abs(pdata->input_dev, ABS_MT_POSITION_Y, | ||
405 | y[finger]); | ||
406 | input_mt_sync(pdata->input_dev); | ||
407 | } | ||
408 | } else | ||
409 | input_mt_sync(pdata->input_dev); | ||
410 | |||
411 | /* sync after groups of events */ | ||
412 | input_sync(pdata->input_dev); | ||
413 | /* return the number of touch points */ | ||
414 | return touch_count; | ||
415 | } | ||
416 | |||
417 | /** | ||
418 | * synaptics_rmi4_report_device() - reports the rmi4 device | ||
419 | * @pdata: pointer to synaptics_rmi4_data structure | ||
420 | * @rfi: pointer to synaptics_rmi4_fn | ||
421 | * | ||
422 | * This function is used to call the report function of the rmi4 device. | ||
423 | */ | ||
424 | static int synaptics_rmi4_report_device(struct synaptics_rmi4_data *pdata, | ||
425 | struct synaptics_rmi4_fn *rfi) | ||
426 | { | ||
427 | int touch = 0; | ||
428 | struct i2c_client *client = pdata->i2c_client; | ||
429 | static int num_error_reports; | ||
430 | if (rfi->fn_number != SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM) { | ||
431 | num_error_reports++; | ||
432 | if (num_error_reports < MAX_ERROR_REPORT) | ||
433 | dev_err(&client->dev, "%s:report not supported\n", | ||
434 | __func__); | ||
435 | } else | ||
436 | touch = synpatics_rmi4_touchpad_report(pdata, rfi); | ||
437 | return touch; | ||
438 | } | ||
439 | /** | ||
440 | * synaptics_rmi4_sensor_report() - reports to input subsystem | ||
441 | * @pdata: pointer to synaptics_rmi4_data structure | ||
442 | * | ||
443 | * This function is used to reads in all data sources and reports | ||
444 | * them to the input subsystem. | ||
445 | */ | ||
446 | static int synaptics_rmi4_sensor_report(struct synaptics_rmi4_data *pdata) | ||
447 | { | ||
448 | unsigned char intr_status[4]; | ||
449 | /* number of touch points - fingers or buttons */ | ||
450 | int touch = 0; | ||
451 | unsigned int retval; | ||
452 | struct synaptics_rmi4_fn *rfi; | ||
453 | struct synaptics_rmi4_device_info *rmi; | ||
454 | struct i2c_client *client = pdata->i2c_client; | ||
455 | |||
456 | /* | ||
457 | * Get the interrupt status from the function $01 | ||
458 | * control register+1 to find which source(s) were interrupting | ||
459 | * so we can read the data from the source(s) (2D sensor, buttons..) | ||
460 | */ | ||
461 | retval = synaptics_rmi4_i2c_block_read(pdata, | ||
462 | pdata->fn01_data_base_addr + 1, | ||
463 | intr_status, | ||
464 | pdata->number_of_interrupt_register); | ||
465 | if (retval != pdata->number_of_interrupt_register) { | ||
466 | dev_err(&client->dev, | ||
467 | "could not read interrupt status registers\n"); | ||
468 | return 0; | ||
469 | } | ||
470 | /* | ||
471 | * check each function that has data sources and if the interrupt for | ||
472 | * that triggered then call that RMI4 functions report() function to | ||
473 | * gather data and report it to the input subsystem | ||
474 | */ | ||
475 | rmi = &(pdata->rmi4_mod_info); | ||
476 | list_for_each_entry(rfi, &rmi->support_fn_list, link) { | ||
477 | if (rfi->num_of_data_sources) { | ||
478 | if (intr_status[rfi->index_to_intr_reg] & | ||
479 | rfi->intr_mask) | ||
480 | touch = synaptics_rmi4_report_device(pdata, | ||
481 | rfi); | ||
482 | } | ||
483 | } | ||
484 | /* return the number of touch points */ | ||
485 | return touch; | ||
486 | } | ||
487 | |||
488 | /** | ||
489 | * synaptics_rmi4_irq() - thread function for rmi4 attention line | ||
490 | * @irq: irq value | ||
491 | * @data: void pointer | ||
492 | * | ||
493 | * This function is interrupt thread function. It just notifies the | ||
494 | * application layer that attention is required. | ||
495 | */ | ||
496 | static irqreturn_t synaptics_rmi4_irq(int irq, void *data) | ||
497 | { | ||
498 | struct synaptics_rmi4_data *pdata = data; | ||
499 | int touch_count; | ||
500 | do { | ||
501 | touch_count = synaptics_rmi4_sensor_report(pdata); | ||
502 | if (touch_count) | ||
503 | wait_event_timeout(pdata->wait, pdata->touch_stopped, | ||
504 | msecs_to_jiffies(1)); | ||
505 | else | ||
506 | break; | ||
507 | } while (!pdata->touch_stopped); | ||
508 | return IRQ_HANDLED; | ||
509 | } | ||
510 | |||
511 | /** | ||
512 | * synpatics_rmi4_touchpad_detect() - detects the rmi4 touchpad device | ||
513 | * @pdata: pointer to synaptics_rmi4_data structure | ||
514 | * @rfi: pointer to synaptics_rmi4_fn structure | ||
515 | * @fd: pointer to synaptics_rmi4_fn_desc structure | ||
516 | * @interruptcount: count the number of interrupts | ||
517 | * | ||
518 | * This function calls to detects the rmi4 touchpad device | ||
519 | */ | ||
520 | static int synpatics_rmi4_touchpad_detect(struct synaptics_rmi4_data *pdata, | ||
521 | struct synaptics_rmi4_fn *rfi, | ||
522 | struct synaptics_rmi4_fn_desc *fd, | ||
523 | unsigned int interruptcount) | ||
524 | { | ||
525 | unsigned char queries[QUERY_LEN]; | ||
526 | unsigned short intr_offset; | ||
527 | unsigned char abs_data_size; | ||
528 | unsigned char abs_data_blk_size; | ||
529 | unsigned char egr_0, egr_1; | ||
530 | unsigned int all_data_blk_size; | ||
531 | int has_pinch, has_flick, has_tap; | ||
532 | int has_tapandhold, has_doubletap; | ||
533 | int has_earlytap, has_press; | ||
534 | int has_palmdetect, has_rotate; | ||
535 | int has_rel; | ||
536 | int i; | ||
537 | int retval; | ||
538 | struct i2c_client *client = pdata->i2c_client; | ||
539 | |||
540 | rfi->fn_desc.query_base_addr = fd->query_base_addr; | ||
541 | rfi->fn_desc.data_base_addr = fd->data_base_addr; | ||
542 | rfi->fn_desc.intr_src_count = fd->intr_src_count; | ||
543 | rfi->fn_desc.fn_number = fd->fn_number; | ||
544 | rfi->fn_number = fd->fn_number; | ||
545 | rfi->num_of_data_sources = fd->intr_src_count; | ||
546 | rfi->fn_desc.ctrl_base_addr = fd->ctrl_base_addr; | ||
547 | rfi->fn_desc.cmd_base_addr = fd->cmd_base_addr; | ||
548 | |||
549 | /* | ||
550 | * need to get number of fingers supported, data size, etc. | ||
551 | * to be used when getting data since the number of registers to | ||
552 | * read depends on the number of fingers supported and data size. | ||
553 | */ | ||
554 | retval = synaptics_rmi4_i2c_block_read(pdata, fd->query_base_addr, | ||
555 | queries, | ||
556 | sizeof(queries)); | ||
557 | if (retval != sizeof(queries)) { | ||
558 | dev_err(&client->dev, "%s:read function query registers\n", | ||
559 | __func__); | ||
560 | return retval; | ||
561 | } | ||
562 | /* | ||
563 | * 2D data sources have only 3 bits for the number of fingers | ||
564 | * supported - so the encoding is a bit wierd. | ||
565 | */ | ||
566 | if ((queries[1] & MASK_3BIT) <= 4) | ||
567 | /* add 1 since zero based */ | ||
568 | rfi->num_of_data_points = (queries[1] & MASK_3BIT) + 1; | ||
569 | else { | ||
570 | /* | ||
571 | * a value of 5 is up to 10 fingers - 6 and 7 are reserved | ||
572 | * (shouldn't get these i int retval;n a normal 2D source). | ||
573 | */ | ||
574 | if ((queries[1] & MASK_3BIT) == 5) | ||
575 | rfi->num_of_data_points = 10; | ||
576 | } | ||
577 | /* Need to get interrupt info for handling interrupts */ | ||
578 | rfi->index_to_intr_reg = (interruptcount + 7)/8; | ||
579 | if (rfi->index_to_intr_reg != 0) | ||
580 | rfi->index_to_intr_reg -= 1; | ||
581 | /* | ||
582 | * loop through interrupts for each source in fn $11 | ||
583 | * and or in a bit to the interrupt mask for each. | ||
584 | */ | ||
585 | intr_offset = interruptcount % 8; | ||
586 | rfi->intr_mask = 0; | ||
587 | for (i = intr_offset; | ||
588 | i < ((fd->intr_src_count & MASK_3BIT) + intr_offset); i++) | ||
589 | rfi->intr_mask |= 1 << i; | ||
590 | |||
591 | /* Size of just the absolute data for one finger */ | ||
592 | abs_data_size = queries[5] & MASK_2BIT; | ||
593 | /* One each for X and Y, one for LSB for X & Y, one for W, one for Z */ | ||
594 | abs_data_blk_size = 3 + (2 * (abs_data_size == 0 ? 1 : 0)); | ||
595 | rfi->size_of_data_register_block = abs_data_blk_size; | ||
596 | |||
597 | /* | ||
598 | * need to determine the size of data to read - this depends on | ||
599 | * conditions such as whether Relative data is reported and if Gesture | ||
600 | * data is reported. | ||
601 | */ | ||
602 | egr_0 = queries[7]; | ||
603 | egr_1 = queries[8]; | ||
604 | |||
605 | /* | ||
606 | * Get info about what EGR data is supported, whether it has | ||
607 | * Relative data supported, etc. | ||
608 | */ | ||
609 | has_pinch = egr_0 & HAS_PINCH; | ||
610 | has_flick = egr_0 & HAS_FLICK; | ||
611 | has_tap = egr_0 & HAS_TAP; | ||
612 | has_earlytap = egr_0 & HAS_EARLYTAP; | ||
613 | has_press = egr_0 & HAS_PRESS; | ||
614 | has_rotate = egr_1 & HAS_ROTATE; | ||
615 | has_rel = queries[1] & HAS_RELEASE; | ||
616 | has_tapandhold = egr_0 & HAS_TAPANDHOLD; | ||
617 | has_doubletap = egr_0 & HAS_DOUBLETAP; | ||
618 | has_palmdetect = egr_1 & HAS_PALMDETECT; | ||
619 | |||
620 | /* | ||
621 | * Size of all data including finger status, absolute data for each | ||
622 | * finger, relative data and EGR data | ||
623 | */ | ||
624 | all_data_blk_size = | ||
625 | /* finger status, four fingers per register */ | ||
626 | ((rfi->num_of_data_points + 3) / 4) + | ||
627 | /* absolute data, per finger times number of fingers */ | ||
628 | (abs_data_blk_size * rfi->num_of_data_points) + | ||
629 | /* | ||
630 | * two relative registers (if relative is being reported) | ||
631 | */ | ||
632 | 2 * has_rel + | ||
633 | /* | ||
634 | * F11_2D_data8 is only present if the egr_0 | ||
635 | * register is non-zero. | ||
636 | */ | ||
637 | !!(egr_0) + | ||
638 | /* | ||
639 | * F11_2D_data9 is only present if either egr_0 or | ||
640 | * egr_1 registers are non-zero. | ||
641 | */ | ||
642 | (egr_0 || egr_1) + | ||
643 | /* | ||
644 | * F11_2D_data10 is only present if EGR_PINCH or EGR_FLICK of | ||
645 | * egr_0 reports as 1. | ||
646 | */ | ||
647 | !!(has_pinch | has_flick) + | ||
648 | /* | ||
649 | * F11_2D_data11 and F11_2D_data12 are only present if | ||
650 | * EGR_FLICK of egr_0 reports as 1. | ||
651 | */ | ||
652 | 2 * !!(has_flick); | ||
653 | return retval; | ||
654 | } | ||
655 | |||
656 | /** | ||
657 | * synpatics_rmi4_touchpad_config() - confiures the rmi4 touchpad device | ||
658 | * @pdata: pointer to synaptics_rmi4_data structure | ||
659 | * @rfi: pointer to synaptics_rmi4_fn structure | ||
660 | * | ||
661 | * This function calls to confiures the rmi4 touchpad device | ||
662 | */ | ||
663 | int synpatics_rmi4_touchpad_config(struct synaptics_rmi4_data *pdata, | ||
664 | struct synaptics_rmi4_fn *rfi) | ||
665 | { | ||
666 | /* | ||
667 | * For the data source - print info and do any | ||
668 | * source specific configuration. | ||
669 | */ | ||
670 | unsigned char data[BUF_LEN]; | ||
671 | int retval = 0; | ||
672 | struct i2c_client *client = pdata->i2c_client; | ||
673 | |||
674 | /* Get and print some info about the data source... */ | ||
675 | /* To Query 2D devices we need to read from the address obtained | ||
676 | * from the function descriptor stored in the RMI function info. | ||
677 | */ | ||
678 | retval = synaptics_rmi4_i2c_block_read(pdata, | ||
679 | rfi->fn_desc.query_base_addr, | ||
680 | data, QUERY_LEN); | ||
681 | if (retval != QUERY_LEN) | ||
682 | dev_err(&client->dev, "%s:read query registers failed\n", | ||
683 | __func__); | ||
684 | else { | ||
685 | retval = synaptics_rmi4_i2c_block_read(pdata, | ||
686 | rfi->fn_desc.ctrl_base_addr, | ||
687 | data, DATA_BUF_LEN); | ||
688 | if (retval != DATA_BUF_LEN) { | ||
689 | dev_err(&client->dev, | ||
690 | "%s:read control registers failed\n", | ||
691 | __func__); | ||
692 | return retval; | ||
693 | } | ||
694 | /* Store these for use later*/ | ||
695 | pdata->sensor_max_x = ((data[6] & MASK_8BIT) << 0) | | ||
696 | ((data[7] & MASK_4BIT) << 8); | ||
697 | pdata->sensor_max_y = ((data[8] & MASK_5BIT) << 0) | | ||
698 | ((data[9] & MASK_4BIT) << 8); | ||
699 | } | ||
700 | return retval; | ||
701 | } | ||
702 | |||
703 | /** | ||
704 | * synaptics_rmi4_i2c_query_device() - query the rmi4 device | ||
705 | * @pdata: pointer to synaptics_rmi4_data structure | ||
706 | * | ||
707 | * This function is used to query the rmi4 device. | ||
708 | */ | ||
709 | static int synaptics_rmi4_i2c_query_device(struct synaptics_rmi4_data *pdata) | ||
710 | { | ||
711 | int i; | ||
712 | int retval; | ||
713 | unsigned char std_queries[STD_QUERY_LEN]; | ||
714 | unsigned char intr_count = 0; | ||
715 | int data_sources = 0; | ||
716 | unsigned int ctrl_offset; | ||
717 | struct synaptics_rmi4_fn *rfi; | ||
718 | struct synaptics_rmi4_fn_desc rmi_fd; | ||
719 | struct synaptics_rmi4_device_info *rmi; | ||
720 | struct i2c_client *client = pdata->i2c_client; | ||
721 | |||
722 | /* | ||
723 | * init the physical drivers RMI module | ||
724 | * info list of functions | ||
725 | */ | ||
726 | INIT_LIST_HEAD(&pdata->rmi4_mod_info.support_fn_list); | ||
727 | |||
728 | /* | ||
729 | * Read the Page Descriptor Table to determine what functions | ||
730 | * are present | ||
731 | */ | ||
732 | for (i = PDT_START_SCAN_LOCATION; i > PDT_END_SCAN_LOCATION; | ||
733 | i -= PDT_ENTRY_SIZE) { | ||
734 | retval = synaptics_rmi4_i2c_block_read(pdata, i, | ||
735 | (unsigned char *)&rmi_fd, | ||
736 | sizeof(rmi_fd)); | ||
737 | if (retval != sizeof(rmi_fd)) { | ||
738 | /* failed to read next PDT entry */ | ||
739 | dev_err(&client->dev, "%s: read error\n", __func__); | ||
740 | return -EIO; | ||
741 | } | ||
742 | rfi = NULL; | ||
743 | if (rmi_fd.fn_number) { | ||
744 | switch (rmi_fd.fn_number & MASK_8BIT) { | ||
745 | case SYNAPTICS_RMI4_DEVICE_CONTROL_FUNC_NUM: | ||
746 | pdata->fn01_query_base_addr = | ||
747 | rmi_fd.query_base_addr; | ||
748 | pdata->fn01_ctrl_base_addr = | ||
749 | rmi_fd.ctrl_base_addr; | ||
750 | pdata->fn01_data_base_addr = | ||
751 | rmi_fd.data_base_addr; | ||
752 | break; | ||
753 | case SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM: | ||
754 | if (rmi_fd.intr_src_count) { | ||
755 | rfi = kmalloc(sizeof(*rfi), | ||
756 | GFP_KERNEL); | ||
757 | if (!rfi) { | ||
758 | dev_err(&client->dev, | ||
759 | "%s:kmalloc failed\n", | ||
760 | __func__); | ||
761 | return -ENOMEM; | ||
762 | } | ||
763 | retval = synpatics_rmi4_touchpad_detect | ||
764 | (pdata, rfi, | ||
765 | &rmi_fd, | ||
766 | intr_count); | ||
767 | if (retval < 0) | ||
768 | return retval; | ||
769 | } | ||
770 | break; | ||
771 | } | ||
772 | /* interrupt count for next iteration */ | ||
773 | intr_count += (rmi_fd.intr_src_count & MASK_3BIT); | ||
774 | /* | ||
775 | * We only want to add functions to the list | ||
776 | * that have data associated with them. | ||
777 | */ | ||
778 | if (rfi && rmi_fd.intr_src_count) { | ||
779 | /* link this function info to the RMI module */ | ||
780 | mutex_lock(&(pdata->fn_list_mutex)); | ||
781 | list_add_tail(&rfi->link, | ||
782 | &pdata->rmi4_mod_info.support_fn_list); | ||
783 | mutex_unlock(&(pdata->fn_list_mutex)); | ||
784 | } | ||
785 | } else { | ||
786 | /* | ||
787 | * A zero in the function number | ||
788 | * signals the end of the PDT | ||
789 | */ | ||
790 | dev_dbg(&client->dev, | ||
791 | "%s:end of PDT\n", __func__); | ||
792 | break; | ||
793 | } | ||
794 | } | ||
795 | /* | ||
796 | * calculate the interrupt register count - used in the | ||
797 | * ISR to read the correct number of interrupt registers | ||
798 | */ | ||
799 | pdata->number_of_interrupt_register = (intr_count + 7) / 8; | ||
800 | /* | ||
801 | * Function $01 will be used to query the product properties, | ||
802 | * and product ID so we had to read the PDT above first to get | ||
803 | * the Fn $01 query address and prior to filling in the product | ||
804 | * info. NOTE: Even an unflashed device will still have FN $01. | ||
805 | */ | ||
806 | |||
807 | /* Load up the standard queries and get the RMI4 module info */ | ||
808 | retval = synaptics_rmi4_i2c_block_read(pdata, | ||
809 | pdata->fn01_query_base_addr, | ||
810 | std_queries, | ||
811 | sizeof(std_queries)); | ||
812 | if (retval != sizeof(std_queries)) { | ||
813 | dev_err(&client->dev, "%s:Failed reading queries\n", | ||
814 | __func__); | ||
815 | return -EIO; | ||
816 | } | ||
817 | |||
818 | /* Currently supported RMI version is 4.0 */ | ||
819 | pdata->rmi4_mod_info.version_major = 4; | ||
820 | pdata->rmi4_mod_info.version_minor = 0; | ||
821 | /* | ||
822 | * get manufacturer id, product_props, product info, | ||
823 | * date code, tester id, serial num and product id (name) | ||
824 | */ | ||
825 | pdata->rmi4_mod_info.manufacturer_id = std_queries[0]; | ||
826 | pdata->rmi4_mod_info.product_props = std_queries[1]; | ||
827 | pdata->rmi4_mod_info.product_info[0] = std_queries[2]; | ||
828 | pdata->rmi4_mod_info.product_info[1] = std_queries[3]; | ||
829 | /* year - 2001-2032 */ | ||
830 | pdata->rmi4_mod_info.date_code[0] = std_queries[4] & MASK_5BIT; | ||
831 | /* month - 1-12 */ | ||
832 | pdata->rmi4_mod_info.date_code[1] = std_queries[5] & MASK_4BIT; | ||
833 | /* day - 1-31 */ | ||
834 | pdata->rmi4_mod_info.date_code[2] = std_queries[6] & MASK_5BIT; | ||
835 | pdata->rmi4_mod_info.tester_id = ((std_queries[7] & MASK_7BIT) << 8) | | ||
836 | (std_queries[8] & MASK_7BIT); | ||
837 | pdata->rmi4_mod_info.serial_number = | ||
838 | ((std_queries[9] & MASK_7BIT) << 8) | | ||
839 | (std_queries[10] & MASK_7BIT); | ||
840 | memcpy(pdata->rmi4_mod_info.product_id_string, &std_queries[11], 10); | ||
841 | |||
842 | /* Check if this is a Synaptics device - report if not. */ | ||
843 | if (pdata->rmi4_mod_info.manufacturer_id != 1) | ||
844 | dev_err(&client->dev, "%s: non-Synaptics mfg id:%d\n", | ||
845 | __func__, pdata->rmi4_mod_info.manufacturer_id); | ||
846 | |||
847 | list_for_each_entry(rfi, &pdata->rmi4_mod_info.support_fn_list, link) | ||
848 | data_sources += rfi->num_of_data_sources; | ||
849 | if (data_sources) { | ||
850 | rmi = &(pdata->rmi4_mod_info); | ||
851 | list_for_each_entry(rfi, &rmi->support_fn_list, link) { | ||
852 | if (rfi->num_of_data_sources) { | ||
853 | if (rfi->fn_number == | ||
854 | SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM) { | ||
855 | retval = synpatics_rmi4_touchpad_config | ||
856 | (pdata, rfi); | ||
857 | if (retval < 0) | ||
858 | return retval; | ||
859 | } else | ||
860 | dev_err(&client->dev, | ||
861 | "%s:fn_number not supported\n", | ||
862 | __func__); | ||
863 | /* | ||
864 | * Turn on interrupts for this | ||
865 | * function's data sources. | ||
866 | */ | ||
867 | ctrl_offset = pdata->fn01_ctrl_base_addr + 1 + | ||
868 | rfi->index_to_intr_reg; | ||
869 | retval = synaptics_rmi4_i2c_byte_write(pdata, | ||
870 | ctrl_offset, | ||
871 | rfi->intr_mask); | ||
872 | if (retval < 0) | ||
873 | return retval; | ||
874 | } | ||
875 | } | ||
876 | } | ||
877 | return 0; | ||
878 | } | ||
879 | |||
880 | /** | ||
881 | * synaptics_rmi4_probe() - Initialze the i2c-client touchscreen driver | ||
882 | * @i2c: i2c client structure pointer | ||
883 | * @id:i2c device id pointer | ||
884 | * | ||
885 | * This function will allocate and initialize the instance | ||
886 | * data and request the irq and set the instance data as the clients | ||
887 | * platform data then register the physical driver which will do a scan of | ||
888 | * the rmi4 Physical Device Table and enumerate any rmi4 functions that | ||
889 | * have data sources associated with them. | ||
890 | */ | ||
891 | static int __devinit synaptics_rmi4_probe | ||
892 | (struct i2c_client *client, const struct i2c_device_id *dev_id) | ||
893 | { | ||
894 | int retval; | ||
895 | unsigned char intr_status[4]; | ||
896 | struct synaptics_rmi4_data *rmi4_data; | ||
897 | const struct synaptics_rmi4_platform_data *platformdata = | ||
898 | client->dev.platform_data; | ||
899 | |||
900 | if (!i2c_check_functionality(client->adapter, | ||
901 | I2C_FUNC_SMBUS_BYTE_DATA)) { | ||
902 | dev_err(&client->dev, "i2c smbus byte data not supported\n"); | ||
903 | return -EIO; | ||
904 | } | ||
905 | |||
906 | if (!platformdata) { | ||
907 | dev_err(&client->dev, "%s: no platform data\n", __func__); | ||
908 | return -EINVAL; | ||
909 | } | ||
910 | |||
911 | /* Allocate and initialize the instance data for this client */ | ||
912 | rmi4_data = kzalloc(sizeof(struct synaptics_rmi4_data) * 2, | ||
913 | GFP_KERNEL); | ||
914 | if (!rmi4_data) { | ||
915 | dev_err(&client->dev, "%s: no memory allocated\n", __func__); | ||
916 | return -ENOMEM; | ||
917 | } | ||
918 | |||
919 | rmi4_data->input_dev = input_allocate_device(); | ||
920 | if (rmi4_data->input_dev == NULL) { | ||
921 | dev_err(&client->dev, "%s:input device alloc failed\n", | ||
922 | __func__); | ||
923 | retval = -ENOMEM; | ||
924 | goto err_input; | ||
925 | } | ||
926 | |||
927 | dev_set_name(&client->dev, platformdata->name); | ||
928 | |||
929 | if (platformdata->regulator_en) { | ||
930 | rmi4_data->regulator = regulator_get(&client->dev, "v-touch"); | ||
931 | if (IS_ERR(rmi4_data->regulator)) { | ||
932 | dev_err(&client->dev, "%s:get regulator failed\n", | ||
933 | __func__); | ||
934 | retval = PTR_ERR(rmi4_data->regulator); | ||
935 | goto err_regulator; | ||
936 | } | ||
937 | regulator_enable(rmi4_data->regulator); | ||
938 | } | ||
939 | |||
940 | init_waitqueue_head(&rmi4_data->wait); | ||
941 | /* | ||
942 | * Copy i2c_client pointer into RTID's i2c_client pointer for | ||
943 | * later use in rmi4_read, rmi4_write, etc. | ||
944 | */ | ||
945 | rmi4_data->i2c_client = client; | ||
946 | /* So we set the page correctly the first time */ | ||
947 | rmi4_data->current_page = MASK_16BIT; | ||
948 | rmi4_data->board = platformdata; | ||
949 | rmi4_data->touch_stopped = false; | ||
950 | |||
951 | /* init the mutexes for maintain the lists */ | ||
952 | mutex_init(&(rmi4_data->fn_list_mutex)); | ||
953 | mutex_init(&(rmi4_data->rmi4_page_mutex)); | ||
954 | |||
955 | /* | ||
956 | * Register physical driver - this will call the detect function that | ||
957 | * will then scan the device and determine the supported | ||
958 | * rmi4 functions. | ||
959 | */ | ||
960 | retval = synaptics_rmi4_i2c_query_device(rmi4_data); | ||
961 | if (retval) { | ||
962 | dev_err(&client->dev, "%s: rmi4 query device failed\n", | ||
963 | __func__); | ||
964 | goto err_query_dev; | ||
965 | } | ||
966 | |||
967 | /* Store the instance data in the i2c_client */ | ||
968 | i2c_set_clientdata(client, rmi4_data); | ||
969 | |||
970 | /*initialize the input device parameters */ | ||
971 | rmi4_data->input_dev->name = DRIVER_NAME; | ||
972 | rmi4_data->input_dev->phys = "Synaptics_Clearpad"; | ||
973 | rmi4_data->input_dev->id.bustype = BUS_I2C; | ||
974 | rmi4_data->input_dev->dev.parent = &client->dev; | ||
975 | input_set_drvdata(rmi4_data->input_dev, rmi4_data); | ||
976 | |||
977 | /* Initialize the function handlers for rmi4 */ | ||
978 | set_bit(EV_SYN, rmi4_data->input_dev->evbit); | ||
979 | set_bit(EV_KEY, rmi4_data->input_dev->evbit); | ||
980 | set_bit(EV_ABS, rmi4_data->input_dev->evbit); | ||
981 | |||
982 | input_set_abs_params(rmi4_data->input_dev, ABS_MT_POSITION_X, 0, | ||
983 | rmi4_data->sensor_max_x, 0, 0); | ||
984 | input_set_abs_params(rmi4_data->input_dev, ABS_MT_POSITION_Y, 0, | ||
985 | rmi4_data->sensor_max_y, 0, 0); | ||
986 | input_set_abs_params(rmi4_data->input_dev, ABS_MT_TOUCH_MAJOR, 0, | ||
987 | MAX_TOUCH_MAJOR, 0, 0); | ||
988 | |||
989 | retval = input_register_device(rmi4_data->input_dev); | ||
990 | if (retval) { | ||
991 | dev_err(&client->dev, "%s:input register failed\n", __func__); | ||
992 | goto err_input_register; | ||
993 | } | ||
994 | |||
995 | /* Clear interrupts */ | ||
996 | synaptics_rmi4_i2c_block_read(rmi4_data, | ||
997 | rmi4_data->fn01_data_base_addr + 1, intr_status, | ||
998 | rmi4_data->number_of_interrupt_register); | ||
999 | retval = request_threaded_irq(platformdata->irq_number, NULL, | ||
1000 | synaptics_rmi4_irq, | ||
1001 | platformdata->irq_type, | ||
1002 | platformdata->name, rmi4_data); | ||
1003 | if (retval) { | ||
1004 | dev_err(&client->dev, "%s:Unable to get attn irq %d\n", | ||
1005 | __func__, platformdata->irq_number); | ||
1006 | goto err_request_irq; | ||
1007 | } | ||
1008 | |||
1009 | return retval; | ||
1010 | |||
1011 | err_request_irq: | ||
1012 | free_irq(platformdata->irq_number, rmi4_data); | ||
1013 | input_unregister_device(rmi4_data->input_dev); | ||
1014 | err_input_register: | ||
1015 | i2c_set_clientdata(client, NULL); | ||
1016 | err_query_dev: | ||
1017 | if (platformdata->regulator_en) { | ||
1018 | regulator_disable(rmi4_data->regulator); | ||
1019 | regulator_put(rmi4_data->regulator); | ||
1020 | } | ||
1021 | err_regulator: | ||
1022 | input_free_device(rmi4_data->input_dev); | ||
1023 | rmi4_data->input_dev = NULL; | ||
1024 | err_input: | ||
1025 | kfree(rmi4_data); | ||
1026 | |||
1027 | return retval; | ||
1028 | } | ||
1029 | /** | ||
1030 | * synaptics_rmi4_remove() - Removes the i2c-client touchscreen driver | ||
1031 | * @client: i2c client structure pointer | ||
1032 | * | ||
1033 | * This funtion uses to remove the i2c-client | ||
1034 | * touchscreen driver and returns integer. | ||
1035 | */ | ||
1036 | static int __devexit synaptics_rmi4_remove(struct i2c_client *client) | ||
1037 | { | ||
1038 | struct synaptics_rmi4_data *rmi4_data = i2c_get_clientdata(client); | ||
1039 | const struct synaptics_rmi4_platform_data *pdata = rmi4_data->board; | ||
1040 | |||
1041 | rmi4_data->touch_stopped = true; | ||
1042 | wake_up(&rmi4_data->wait); | ||
1043 | free_irq(pdata->irq_number, rmi4_data); | ||
1044 | input_unregister_device(rmi4_data->input_dev); | ||
1045 | if (pdata->regulator_en) { | ||
1046 | regulator_disable(rmi4_data->regulator); | ||
1047 | regulator_put(rmi4_data->regulator); | ||
1048 | } | ||
1049 | kfree(rmi4_data); | ||
1050 | |||
1051 | return 0; | ||
1052 | } | ||
1053 | |||
1054 | #ifdef CONFIG_PM | ||
1055 | /** | ||
1056 | * synaptics_rmi4_suspend() - suspend the touch screen controller | ||
1057 | * @dev: pointer to device structure | ||
1058 | * | ||
1059 | * This funtion is used to suspend the | ||
1060 | * touch panel controller and returns integer | ||
1061 | */ | ||
1062 | static int synaptics_rmi4_suspend(struct device *dev) | ||
1063 | { | ||
1064 | /* Touch sleep mode */ | ||
1065 | int retval; | ||
1066 | unsigned char intr_status; | ||
1067 | struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); | ||
1068 | const struct synaptics_rmi4_platform_data *pdata = rmi4_data->board; | ||
1069 | |||
1070 | rmi4_data->touch_stopped = true; | ||
1071 | disable_irq(pdata->irq_number); | ||
1072 | |||
1073 | retval = synaptics_rmi4_i2c_block_read(rmi4_data, | ||
1074 | rmi4_data->fn01_data_base_addr + 1, | ||
1075 | &intr_status, | ||
1076 | rmi4_data->number_of_interrupt_register); | ||
1077 | if (retval < 0) | ||
1078 | return retval; | ||
1079 | |||
1080 | retval = synaptics_rmi4_i2c_byte_write(rmi4_data, | ||
1081 | rmi4_data->fn01_ctrl_base_addr + 1, | ||
1082 | (intr_status & ~TOUCHPAD_CTRL_INTR)); | ||
1083 | if (retval < 0) | ||
1084 | return retval; | ||
1085 | |||
1086 | if (pdata->regulator_en) | ||
1087 | regulator_disable(rmi4_data->regulator); | ||
1088 | |||
1089 | return 0; | ||
1090 | } | ||
1091 | /** | ||
1092 | * synaptics_rmi4_resume() - resume the touch screen controller | ||
1093 | * @dev: pointer to device structure | ||
1094 | * | ||
1095 | * This funtion is used to resume the touch panel | ||
1096 | * controller and returns integer. | ||
1097 | */ | ||
1098 | static int synaptics_rmi4_resume(struct device *dev) | ||
1099 | { | ||
1100 | int retval; | ||
1101 | unsigned char intr_status; | ||
1102 | struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); | ||
1103 | const struct synaptics_rmi4_platform_data *pdata = rmi4_data->board; | ||
1104 | |||
1105 | if (pdata->regulator_en) | ||
1106 | regulator_enable(rmi4_data->regulator); | ||
1107 | |||
1108 | enable_irq(pdata->irq_number); | ||
1109 | rmi4_data->touch_stopped = false; | ||
1110 | |||
1111 | retval = synaptics_rmi4_i2c_block_read(rmi4_data, | ||
1112 | rmi4_data->fn01_data_base_addr + 1, | ||
1113 | &intr_status, | ||
1114 | rmi4_data->number_of_interrupt_register); | ||
1115 | if (retval < 0) | ||
1116 | return retval; | ||
1117 | |||
1118 | retval = synaptics_rmi4_i2c_byte_write(rmi4_data, | ||
1119 | rmi4_data->fn01_ctrl_base_addr + 1, | ||
1120 | (intr_status | TOUCHPAD_CTRL_INTR)); | ||
1121 | if (retval < 0) | ||
1122 | return retval; | ||
1123 | |||
1124 | return 0; | ||
1125 | } | ||
1126 | |||
1127 | static const struct dev_pm_ops synaptics_rmi4_dev_pm_ops = { | ||
1128 | .suspend = synaptics_rmi4_suspend, | ||
1129 | .resume = synaptics_rmi4_resume, | ||
1130 | }; | ||
1131 | #endif | ||
1132 | |||
1133 | static const struct i2c_device_id synaptics_rmi4_id_table[] = { | ||
1134 | { DRIVER_NAME, 0 }, | ||
1135 | { }, | ||
1136 | }; | ||
1137 | MODULE_DEVICE_TABLE(i2c, synaptics_rmi4_id_table); | ||
1138 | |||
1139 | static struct i2c_driver synaptics_rmi4_driver = { | ||
1140 | .driver = { | ||
1141 | .name = DRIVER_NAME, | ||
1142 | .owner = THIS_MODULE, | ||
1143 | #ifdef CONFIG_PM | ||
1144 | .pm = &synaptics_rmi4_dev_pm_ops, | ||
1145 | #endif | ||
1146 | }, | ||
1147 | .probe = synaptics_rmi4_probe, | ||
1148 | .remove = __devexit_p(synaptics_rmi4_remove), | ||
1149 | .id_table = synaptics_rmi4_id_table, | ||
1150 | }; | ||
1151 | /** | ||
1152 | * synaptics_rmi4_init() - Initialize the touchscreen driver | ||
1153 | * | ||
1154 | * This funtion uses to initializes the synaptics | ||
1155 | * touchscreen driver and returns integer. | ||
1156 | */ | ||
1157 | static int __init synaptics_rmi4_init(void) | ||
1158 | { | ||
1159 | return i2c_add_driver(&synaptics_rmi4_driver); | ||
1160 | } | ||
1161 | /** | ||
1162 | * synaptics_rmi4_exit() - De-initialize the touchscreen driver | ||
1163 | * | ||
1164 | * This funtion uses to de-initialize the synaptics | ||
1165 | * touchscreen driver and returns none. | ||
1166 | */ | ||
1167 | static void __exit synaptics_rmi4_exit(void) | ||
1168 | { | ||
1169 | i2c_del_driver(&synaptics_rmi4_driver); | ||
1170 | } | ||
1171 | |||
1172 | |||
1173 | module_init(synaptics_rmi4_init); | ||
1174 | module_exit(synaptics_rmi4_exit); | ||
1175 | |||
1176 | MODULE_LICENSE("GPL v2"); | ||
1177 | MODULE_AUTHOR("naveen.gaddipati@stericsson.com, js.ha@stericsson.com"); | ||
1178 | MODULE_DESCRIPTION("synaptics rmi4 i2c touch Driver"); | ||
1179 | MODULE_ALIAS("i2c:synaptics_rmi4_ts"); | ||
diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.h b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.h new file mode 100644 index 00000000000..820ae275fa2 --- /dev/null +++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.h | |||
@@ -0,0 +1,50 @@ | |||
1 | /** | ||
2 | * | ||
3 | * Synaptics Register Mapped Interface (RMI4) I2C Physical Layer Driver. | ||
4 | * Copyright (c) 2007-2010, Synaptics Incorporated | ||
5 | * | ||
6 | * Author: Js HA <js.ha@stericsson.com> for ST-Ericsson | ||
7 | * Author: Naveen Kumar G <naveen.gaddipati@stericsson.com> for ST-Ericsson | ||
8 | * Copyright 2010 (c) ST-Ericsson AB | ||
9 | */ | ||
10 | /* | ||
11 | * This file is licensed under the GPL2 license. | ||
12 | * | ||
13 | *############################################################################# | ||
14 | * GPL | ||
15 | * | ||
16 | * This program is free software; you can redistribute it and/or modify it | ||
17 | * under the terms of the GNU General Public License version 2 as published | ||
18 | * by the Free Software Foundation. | ||
19 | * | ||
20 | * This program is distributed in the hope that it will be useful, but | ||
21 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | ||
22 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
23 | * for more details. | ||
24 | * | ||
25 | *############################################################################# | ||
26 | */ | ||
27 | |||
28 | #ifndef _SYNAPTICS_RMI4_H_INCLUDED_ | ||
29 | #define _SYNAPTICS_RMI4_H_INCLUDED_ | ||
30 | |||
31 | /** | ||
32 | * struct synaptics_rmi4_platform_data - contains the rmi4 platform data | ||
33 | * @irq_number: irq number | ||
34 | * @irq_type: irq type | ||
35 | * @x flip: x flip flag | ||
36 | * @y flip: y flip flag | ||
37 | * @regulator_en: regulator enable flag | ||
38 | * | ||
39 | * This structure gives platform data for rmi4. | ||
40 | */ | ||
41 | struct synaptics_rmi4_platform_data { | ||
42 | const char *name; | ||
43 | int irq_number; | ||
44 | int irq_type; | ||
45 | bool x_flip; | ||
46 | bool y_flip; | ||
47 | bool regulator_en; | ||
48 | }; | ||
49 | |||
50 | #endif | ||