Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Taal DSI command mode panel |
| 3 | * |
| 4 | * Copyright (C) 2009 Nokia Corporation |
| 5 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License version 2 as published by |
| 9 | * the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 14 | * more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along with |
| 17 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
| 20 | /*#define DEBUG*/ |
| 21 | |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/err.h> |
| 25 | #include <linux/jiffies.h> |
| 26 | #include <linux/sched.h> |
| 27 | #include <linux/backlight.h> |
| 28 | #include <linux/fb.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/gpio.h> |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 31 | #include <linux/workqueue.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 32 | #include <linux/slab.h> |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 33 | #include <linux/mutex.h> |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 34 | |
| 35 | #include <plat/display.h> |
| 36 | |
| 37 | /* DSI Virtual channel. Hardcoded for now. */ |
| 38 | #define TCH 0 |
| 39 | |
| 40 | #define DCS_READ_NUM_ERRORS 0x05 |
| 41 | #define DCS_READ_POWER_MODE 0x0a |
| 42 | #define DCS_READ_MADCTL 0x0b |
| 43 | #define DCS_READ_PIXEL_FORMAT 0x0c |
| 44 | #define DCS_RDDSDR 0x0f |
| 45 | #define DCS_SLEEP_IN 0x10 |
| 46 | #define DCS_SLEEP_OUT 0x11 |
| 47 | #define DCS_DISPLAY_OFF 0x28 |
| 48 | #define DCS_DISPLAY_ON 0x29 |
| 49 | #define DCS_COLUMN_ADDR 0x2a |
| 50 | #define DCS_PAGE_ADDR 0x2b |
| 51 | #define DCS_MEMORY_WRITE 0x2c |
| 52 | #define DCS_TEAR_OFF 0x34 |
| 53 | #define DCS_TEAR_ON 0x35 |
| 54 | #define DCS_MEM_ACC_CTRL 0x36 |
| 55 | #define DCS_PIXEL_FORMAT 0x3a |
| 56 | #define DCS_BRIGHTNESS 0x51 |
| 57 | #define DCS_CTRL_DISPLAY 0x53 |
| 58 | #define DCS_WRITE_CABC 0x55 |
| 59 | #define DCS_READ_CABC 0x56 |
| 60 | #define DCS_GET_ID1 0xda |
| 61 | #define DCS_GET_ID2 0xdb |
| 62 | #define DCS_GET_ID3 0xdc |
| 63 | |
| 64 | /* #define TAAL_USE_ESD_CHECK */ |
| 65 | #define TAAL_ESD_CHECK_PERIOD msecs_to_jiffies(5000) |
| 66 | |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 67 | static irqreturn_t taal_te_isr(int irq, void *data); |
| 68 | static void taal_te_timeout_work_callback(struct work_struct *work); |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 69 | static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable); |
| 70 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 71 | struct taal_data { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 72 | struct mutex lock; |
| 73 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 74 | struct backlight_device *bldev; |
| 75 | |
| 76 | unsigned long hw_guard_end; /* next value of jiffies when we can |
| 77 | * issue the next sleep in/out command |
| 78 | */ |
| 79 | unsigned long hw_guard_wait; /* max guard time in jiffies */ |
| 80 | |
| 81 | struct omap_dss_device *dssdev; |
| 82 | |
| 83 | bool enabled; |
| 84 | u8 rotate; |
| 85 | bool mirror; |
| 86 | |
| 87 | bool te_enabled; |
| 88 | bool use_ext_te; |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 89 | |
| 90 | atomic_t do_update; |
| 91 | struct { |
| 92 | u16 x; |
| 93 | u16 y; |
| 94 | u16 w; |
| 95 | u16 h; |
| 96 | } update_region; |
| 97 | struct delayed_work te_timeout_work; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 98 | |
| 99 | bool use_dsi_bl; |
| 100 | |
| 101 | bool cabc_broken; |
| 102 | unsigned cabc_mode; |
| 103 | |
| 104 | bool intro_printed; |
| 105 | |
| 106 | struct workqueue_struct *esd_wq; |
| 107 | struct delayed_work esd_work; |
| 108 | }; |
| 109 | |
| 110 | static void taal_esd_work(struct work_struct *work); |
| 111 | |
| 112 | static void hw_guard_start(struct taal_data *td, int guard_msec) |
| 113 | { |
| 114 | td->hw_guard_wait = msecs_to_jiffies(guard_msec); |
| 115 | td->hw_guard_end = jiffies + td->hw_guard_wait; |
| 116 | } |
| 117 | |
| 118 | static void hw_guard_wait(struct taal_data *td) |
| 119 | { |
| 120 | unsigned long wait = td->hw_guard_end - jiffies; |
| 121 | |
| 122 | if ((long)wait > 0 && wait <= td->hw_guard_wait) { |
| 123 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 124 | schedule_timeout(wait); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | static int taal_dcs_read_1(u8 dcs_cmd, u8 *data) |
| 129 | { |
| 130 | int r; |
| 131 | u8 buf[1]; |
| 132 | |
| 133 | r = dsi_vc_dcs_read(TCH, dcs_cmd, buf, 1); |
| 134 | |
| 135 | if (r < 0) |
| 136 | return r; |
| 137 | |
| 138 | *data = buf[0]; |
| 139 | |
| 140 | return 0; |
| 141 | } |
| 142 | |
| 143 | static int taal_dcs_write_0(u8 dcs_cmd) |
| 144 | { |
| 145 | return dsi_vc_dcs_write(TCH, &dcs_cmd, 1); |
| 146 | } |
| 147 | |
| 148 | static int taal_dcs_write_1(u8 dcs_cmd, u8 param) |
| 149 | { |
| 150 | u8 buf[2]; |
| 151 | buf[0] = dcs_cmd; |
| 152 | buf[1] = param; |
| 153 | return dsi_vc_dcs_write(TCH, buf, 2); |
| 154 | } |
| 155 | |
| 156 | static int taal_sleep_in(struct taal_data *td) |
| 157 | |
| 158 | { |
| 159 | u8 cmd; |
| 160 | int r; |
| 161 | |
| 162 | hw_guard_wait(td); |
| 163 | |
| 164 | cmd = DCS_SLEEP_IN; |
| 165 | r = dsi_vc_dcs_write_nosync(TCH, &cmd, 1); |
| 166 | if (r) |
| 167 | return r; |
| 168 | |
| 169 | hw_guard_start(td, 120); |
| 170 | |
| 171 | msleep(5); |
| 172 | |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | static int taal_sleep_out(struct taal_data *td) |
| 177 | { |
| 178 | int r; |
| 179 | |
| 180 | hw_guard_wait(td); |
| 181 | |
| 182 | r = taal_dcs_write_0(DCS_SLEEP_OUT); |
| 183 | if (r) |
| 184 | return r; |
| 185 | |
| 186 | hw_guard_start(td, 120); |
| 187 | |
| 188 | msleep(5); |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static int taal_get_id(u8 *id1, u8 *id2, u8 *id3) |
| 194 | { |
| 195 | int r; |
| 196 | |
| 197 | r = taal_dcs_read_1(DCS_GET_ID1, id1); |
| 198 | if (r) |
| 199 | return r; |
| 200 | r = taal_dcs_read_1(DCS_GET_ID2, id2); |
| 201 | if (r) |
| 202 | return r; |
| 203 | r = taal_dcs_read_1(DCS_GET_ID3, id3); |
| 204 | if (r) |
| 205 | return r; |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static int taal_set_addr_mode(u8 rotate, bool mirror) |
| 211 | { |
| 212 | int r; |
| 213 | u8 mode; |
| 214 | int b5, b6, b7; |
| 215 | |
| 216 | r = taal_dcs_read_1(DCS_READ_MADCTL, &mode); |
| 217 | if (r) |
| 218 | return r; |
| 219 | |
| 220 | switch (rotate) { |
| 221 | default: |
| 222 | case 0: |
| 223 | b7 = 0; |
| 224 | b6 = 0; |
| 225 | b5 = 0; |
| 226 | break; |
| 227 | case 1: |
| 228 | b7 = 0; |
| 229 | b6 = 1; |
| 230 | b5 = 1; |
| 231 | break; |
| 232 | case 2: |
| 233 | b7 = 1; |
| 234 | b6 = 1; |
| 235 | b5 = 0; |
| 236 | break; |
| 237 | case 3: |
| 238 | b7 = 1; |
| 239 | b6 = 0; |
| 240 | b5 = 1; |
| 241 | break; |
| 242 | } |
| 243 | |
| 244 | if (mirror) |
| 245 | b6 = !b6; |
| 246 | |
| 247 | mode &= ~((1<<7) | (1<<6) | (1<<5)); |
| 248 | mode |= (b7 << 7) | (b6 << 6) | (b5 << 5); |
| 249 | |
| 250 | return taal_dcs_write_1(DCS_MEM_ACC_CTRL, mode); |
| 251 | } |
| 252 | |
| 253 | static int taal_set_update_window(u16 x, u16 y, u16 w, u16 h) |
| 254 | { |
| 255 | int r; |
| 256 | u16 x1 = x; |
| 257 | u16 x2 = x + w - 1; |
| 258 | u16 y1 = y; |
| 259 | u16 y2 = y + h - 1; |
| 260 | |
| 261 | u8 buf[5]; |
| 262 | buf[0] = DCS_COLUMN_ADDR; |
| 263 | buf[1] = (x1 >> 8) & 0xff; |
| 264 | buf[2] = (x1 >> 0) & 0xff; |
| 265 | buf[3] = (x2 >> 8) & 0xff; |
| 266 | buf[4] = (x2 >> 0) & 0xff; |
| 267 | |
| 268 | r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); |
| 269 | if (r) |
| 270 | return r; |
| 271 | |
| 272 | buf[0] = DCS_PAGE_ADDR; |
| 273 | buf[1] = (y1 >> 8) & 0xff; |
| 274 | buf[2] = (y1 >> 0) & 0xff; |
| 275 | buf[3] = (y2 >> 8) & 0xff; |
| 276 | buf[4] = (y2 >> 0) & 0xff; |
| 277 | |
| 278 | r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); |
| 279 | if (r) |
| 280 | return r; |
| 281 | |
| 282 | dsi_vc_send_bta_sync(TCH); |
| 283 | |
| 284 | return r; |
| 285 | } |
| 286 | |
| 287 | static int taal_bl_update_status(struct backlight_device *dev) |
| 288 | { |
| 289 | struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev); |
| 290 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 291 | int r; |
| 292 | int level; |
| 293 | |
| 294 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| 295 | dev->props.power == FB_BLANK_UNBLANK) |
| 296 | level = dev->props.brightness; |
| 297 | else |
| 298 | level = 0; |
| 299 | |
| 300 | dev_dbg(&dssdev->dev, "update brightness to %d\n", level); |
| 301 | |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 302 | mutex_lock(&td->lock); |
| 303 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 304 | if (td->use_dsi_bl) { |
| 305 | if (td->enabled) { |
| 306 | dsi_bus_lock(); |
| 307 | r = taal_dcs_write_1(DCS_BRIGHTNESS, level); |
| 308 | dsi_bus_unlock(); |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 309 | } else { |
| 310 | r = 0; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 311 | } |
| 312 | } else { |
| 313 | if (!dssdev->set_backlight) |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 314 | r = -EINVAL; |
| 315 | else |
| 316 | r = dssdev->set_backlight(dssdev, level); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 317 | } |
| 318 | |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 319 | mutex_unlock(&td->lock); |
| 320 | |
| 321 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | static int taal_bl_get_intensity(struct backlight_device *dev) |
| 325 | { |
| 326 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| 327 | dev->props.power == FB_BLANK_UNBLANK) |
| 328 | return dev->props.brightness; |
| 329 | |
| 330 | return 0; |
| 331 | } |
| 332 | |
| 333 | static struct backlight_ops taal_bl_ops = { |
| 334 | .get_brightness = taal_bl_get_intensity, |
| 335 | .update_status = taal_bl_update_status, |
| 336 | }; |
| 337 | |
| 338 | static void taal_get_timings(struct omap_dss_device *dssdev, |
| 339 | struct omap_video_timings *timings) |
| 340 | { |
| 341 | *timings = dssdev->panel.timings; |
| 342 | } |
| 343 | |
| 344 | static void taal_get_resolution(struct omap_dss_device *dssdev, |
| 345 | u16 *xres, u16 *yres) |
| 346 | { |
| 347 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 348 | |
| 349 | if (td->rotate == 0 || td->rotate == 2) { |
| 350 | *xres = dssdev->panel.timings.x_res; |
| 351 | *yres = dssdev->panel.timings.y_res; |
| 352 | } else { |
| 353 | *yres = dssdev->panel.timings.x_res; |
| 354 | *xres = dssdev->panel.timings.y_res; |
| 355 | } |
| 356 | } |
| 357 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 358 | static ssize_t taal_num_errors_show(struct device *dev, |
| 359 | struct device_attribute *attr, char *buf) |
| 360 | { |
| 361 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 362 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 363 | u8 errors; |
| 364 | int r; |
| 365 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 366 | mutex_lock(&td->lock); |
| 367 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 368 | if (td->enabled) { |
| 369 | dsi_bus_lock(); |
| 370 | r = taal_dcs_read_1(DCS_READ_NUM_ERRORS, &errors); |
| 371 | dsi_bus_unlock(); |
| 372 | } else { |
| 373 | r = -ENODEV; |
| 374 | } |
| 375 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 376 | mutex_unlock(&td->lock); |
| 377 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 378 | if (r) |
| 379 | return r; |
| 380 | |
| 381 | return snprintf(buf, PAGE_SIZE, "%d\n", errors); |
| 382 | } |
| 383 | |
| 384 | static ssize_t taal_hw_revision_show(struct device *dev, |
| 385 | struct device_attribute *attr, char *buf) |
| 386 | { |
| 387 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 388 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 389 | u8 id1, id2, id3; |
| 390 | int r; |
| 391 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 392 | mutex_lock(&td->lock); |
| 393 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 394 | if (td->enabled) { |
| 395 | dsi_bus_lock(); |
| 396 | r = taal_get_id(&id1, &id2, &id3); |
| 397 | dsi_bus_unlock(); |
| 398 | } else { |
| 399 | r = -ENODEV; |
| 400 | } |
| 401 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 402 | mutex_unlock(&td->lock); |
| 403 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 404 | if (r) |
| 405 | return r; |
| 406 | |
| 407 | return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); |
| 408 | } |
| 409 | |
| 410 | static const char *cabc_modes[] = { |
| 411 | "off", /* used also always when CABC is not supported */ |
| 412 | "ui", |
| 413 | "still-image", |
| 414 | "moving-image", |
| 415 | }; |
| 416 | |
| 417 | static ssize_t show_cabc_mode(struct device *dev, |
| 418 | struct device_attribute *attr, |
| 419 | char *buf) |
| 420 | { |
| 421 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 422 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 423 | const char *mode_str; |
| 424 | int mode; |
| 425 | int len; |
| 426 | |
| 427 | mode = td->cabc_mode; |
| 428 | |
| 429 | mode_str = "unknown"; |
| 430 | if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes)) |
| 431 | mode_str = cabc_modes[mode]; |
| 432 | len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str); |
| 433 | |
| 434 | return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1; |
| 435 | } |
| 436 | |
| 437 | static ssize_t store_cabc_mode(struct device *dev, |
| 438 | struct device_attribute *attr, |
| 439 | const char *buf, size_t count) |
| 440 | { |
| 441 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 442 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 443 | int i; |
| 444 | |
| 445 | for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { |
| 446 | if (sysfs_streq(cabc_modes[i], buf)) |
| 447 | break; |
| 448 | } |
| 449 | |
| 450 | if (i == ARRAY_SIZE(cabc_modes)) |
| 451 | return -EINVAL; |
| 452 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 453 | mutex_lock(&td->lock); |
| 454 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 455 | if (td->enabled) { |
| 456 | dsi_bus_lock(); |
| 457 | if (!td->cabc_broken) |
| 458 | taal_dcs_write_1(DCS_WRITE_CABC, i); |
| 459 | dsi_bus_unlock(); |
| 460 | } |
| 461 | |
| 462 | td->cabc_mode = i; |
| 463 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 464 | mutex_unlock(&td->lock); |
| 465 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 466 | return count; |
| 467 | } |
| 468 | |
| 469 | static ssize_t show_cabc_available_modes(struct device *dev, |
| 470 | struct device_attribute *attr, |
| 471 | char *buf) |
| 472 | { |
| 473 | int len; |
| 474 | int i; |
| 475 | |
| 476 | for (i = 0, len = 0; |
| 477 | len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) |
| 478 | len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", |
| 479 | i ? " " : "", cabc_modes[i], |
| 480 | i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); |
| 481 | |
| 482 | return len < PAGE_SIZE ? len : PAGE_SIZE - 1; |
| 483 | } |
| 484 | |
| 485 | static DEVICE_ATTR(num_dsi_errors, S_IRUGO, taal_num_errors_show, NULL); |
| 486 | static DEVICE_ATTR(hw_revision, S_IRUGO, taal_hw_revision_show, NULL); |
| 487 | static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, |
| 488 | show_cabc_mode, store_cabc_mode); |
| 489 | static DEVICE_ATTR(cabc_available_modes, S_IRUGO, |
| 490 | show_cabc_available_modes, NULL); |
| 491 | |
| 492 | static struct attribute *taal_attrs[] = { |
| 493 | &dev_attr_num_dsi_errors.attr, |
| 494 | &dev_attr_hw_revision.attr, |
| 495 | &dev_attr_cabc_mode.attr, |
| 496 | &dev_attr_cabc_available_modes.attr, |
| 497 | NULL, |
| 498 | }; |
| 499 | |
| 500 | static struct attribute_group taal_attr_group = { |
| 501 | .attrs = taal_attrs, |
| 502 | }; |
| 503 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 504 | static void taal_hw_reset(struct omap_dss_device *dssdev) |
| 505 | { |
| 506 | if (dssdev->reset_gpio == -1) |
| 507 | return; |
| 508 | |
| 509 | gpio_set_value(dssdev->reset_gpio, 1); |
| 510 | udelay(10); |
| 511 | /* reset the panel */ |
| 512 | gpio_set_value(dssdev->reset_gpio, 0); |
| 513 | /* assert reset for at least 10us */ |
| 514 | udelay(10); |
| 515 | gpio_set_value(dssdev->reset_gpio, 1); |
| 516 | /* wait 5ms after releasing reset */ |
| 517 | msleep(5); |
| 518 | } |
| 519 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 520 | static int taal_probe(struct omap_dss_device *dssdev) |
| 521 | { |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 522 | struct backlight_properties props; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 523 | struct taal_data *td; |
| 524 | struct backlight_device *bldev; |
| 525 | int r; |
| 526 | |
| 527 | const struct omap_video_timings taal_panel_timings = { |
| 528 | .x_res = 864, |
| 529 | .y_res = 480, |
| 530 | }; |
| 531 | |
| 532 | dev_dbg(&dssdev->dev, "probe\n"); |
| 533 | |
| 534 | dssdev->panel.config = OMAP_DSS_LCD_TFT; |
| 535 | dssdev->panel.timings = taal_panel_timings; |
| 536 | dssdev->ctrl.pixel_size = 24; |
| 537 | |
| 538 | td = kzalloc(sizeof(*td), GFP_KERNEL); |
| 539 | if (!td) { |
| 540 | r = -ENOMEM; |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 541 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 542 | } |
| 543 | td->dssdev = dssdev; |
| 544 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 545 | mutex_init(&td->lock); |
| 546 | |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 547 | atomic_set(&td->do_update, 0); |
| 548 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 549 | td->esd_wq = create_singlethread_workqueue("taal_esd"); |
| 550 | if (td->esd_wq == NULL) { |
| 551 | dev_err(&dssdev->dev, "can't create ESD workqueue\n"); |
| 552 | r = -ENOMEM; |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 553 | goto err_wq; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 554 | } |
| 555 | INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); |
| 556 | |
| 557 | dev_set_drvdata(&dssdev->dev, td); |
| 558 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 559 | taal_hw_reset(dssdev); |
| 560 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 561 | /* if no platform set_backlight() defined, presume DSI backlight |
| 562 | * control */ |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 563 | memset(&props, 0, sizeof(struct backlight_properties)); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 564 | if (!dssdev->set_backlight) |
| 565 | td->use_dsi_bl = true; |
| 566 | |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 567 | if (td->use_dsi_bl) |
| 568 | props.max_brightness = 255; |
| 569 | else |
| 570 | props.max_brightness = 127; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 571 | bldev = backlight_device_register("taal", &dssdev->dev, dssdev, |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 572 | &taal_bl_ops, &props); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 573 | if (IS_ERR(bldev)) { |
| 574 | r = PTR_ERR(bldev); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 575 | goto err_bl; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 576 | } |
| 577 | |
| 578 | td->bldev = bldev; |
| 579 | |
| 580 | bldev->props.fb_blank = FB_BLANK_UNBLANK; |
| 581 | bldev->props.power = FB_BLANK_UNBLANK; |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 582 | if (td->use_dsi_bl) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 583 | bldev->props.brightness = 255; |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 584 | else |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 585 | bldev->props.brightness = 127; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 586 | |
| 587 | taal_bl_update_status(bldev); |
| 588 | |
| 589 | if (dssdev->phy.dsi.ext_te) { |
| 590 | int gpio = dssdev->phy.dsi.ext_te_gpio; |
| 591 | |
| 592 | r = gpio_request(gpio, "taal irq"); |
| 593 | if (r) { |
| 594 | dev_err(&dssdev->dev, "GPIO request failed\n"); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 595 | goto err_gpio; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | gpio_direction_input(gpio); |
| 599 | |
| 600 | r = request_irq(gpio_to_irq(gpio), taal_te_isr, |
| 601 | IRQF_DISABLED | IRQF_TRIGGER_RISING, |
| 602 | "taal vsync", dssdev); |
| 603 | |
| 604 | if (r) { |
| 605 | dev_err(&dssdev->dev, "IRQ request failed\n"); |
| 606 | gpio_free(gpio); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 607 | goto err_irq; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 608 | } |
| 609 | |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 610 | INIT_DELAYED_WORK_DEFERRABLE(&td->te_timeout_work, |
| 611 | taal_te_timeout_work_callback); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 612 | |
| 613 | td->use_ext_te = true; |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 614 | |
| 615 | dev_dbg(&dssdev->dev, "Using GPIO TE\n"); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | r = sysfs_create_group(&dssdev->dev.kobj, &taal_attr_group); |
| 619 | if (r) { |
| 620 | dev_err(&dssdev->dev, "failed to create sysfs files\n"); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 621 | goto err_sysfs; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | return 0; |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 625 | err_sysfs: |
Jani Nikula | 2f1e5f6 | 2010-04-09 13:52:33 +0300 | [diff] [blame] | 626 | if (td->use_ext_te) |
| 627 | free_irq(gpio_to_irq(dssdev->phy.dsi.ext_te_gpio), dssdev); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 628 | err_irq: |
Jani Nikula | 2f1e5f6 | 2010-04-09 13:52:33 +0300 | [diff] [blame] | 629 | if (td->use_ext_te) |
| 630 | gpio_free(dssdev->phy.dsi.ext_te_gpio); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 631 | err_gpio: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 632 | backlight_device_unregister(bldev); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 633 | err_bl: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 634 | destroy_workqueue(td->esd_wq); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 635 | err_wq: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 636 | kfree(td); |
Jani Nikula | d2b6578 | 2010-04-15 12:24:36 +0300 | [diff] [blame] | 637 | err: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 638 | return r; |
| 639 | } |
| 640 | |
| 641 | static void taal_remove(struct omap_dss_device *dssdev) |
| 642 | { |
| 643 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 644 | struct backlight_device *bldev; |
| 645 | |
| 646 | dev_dbg(&dssdev->dev, "remove\n"); |
| 647 | |
| 648 | sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group); |
| 649 | |
| 650 | if (td->use_ext_te) { |
| 651 | int gpio = dssdev->phy.dsi.ext_te_gpio; |
| 652 | free_irq(gpio_to_irq(gpio), dssdev); |
| 653 | gpio_free(gpio); |
| 654 | } |
| 655 | |
| 656 | bldev = td->bldev; |
| 657 | bldev->props.power = FB_BLANK_POWERDOWN; |
| 658 | taal_bl_update_status(bldev); |
| 659 | backlight_device_unregister(bldev); |
| 660 | |
Jani Nikula | 4571a02 | 2010-04-12 10:23:46 +0300 | [diff] [blame] | 661 | cancel_delayed_work(&td->esd_work); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 662 | destroy_workqueue(td->esd_wq); |
| 663 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 664 | /* reset, to be sure that the panel is in a valid state */ |
| 665 | taal_hw_reset(dssdev); |
| 666 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 667 | kfree(td); |
| 668 | } |
| 669 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 670 | static int taal_power_on(struct omap_dss_device *dssdev) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 671 | { |
| 672 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 673 | u8 id1, id2, id3; |
| 674 | int r; |
| 675 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 676 | /* it seems we have to wait a bit until taal is ready */ |
| 677 | msleep(5); |
| 678 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 679 | r = omapdss_dsi_display_enable(dssdev); |
| 680 | if (r) { |
| 681 | dev_err(&dssdev->dev, "failed to enable DSI\n"); |
| 682 | goto err0; |
| 683 | } |
| 684 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 685 | taal_hw_reset(dssdev); |
| 686 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 687 | omapdss_dsi_vc_enable_hs(TCH, false); |
| 688 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 689 | r = taal_sleep_out(td); |
| 690 | if (r) |
| 691 | goto err; |
| 692 | |
| 693 | r = taal_get_id(&id1, &id2, &id3); |
| 694 | if (r) |
| 695 | goto err; |
| 696 | |
| 697 | /* on early revisions CABC is broken */ |
| 698 | if (id2 == 0x00 || id2 == 0xff || id2 == 0x81) |
| 699 | td->cabc_broken = true; |
| 700 | |
Jani Nikula | f2a8b75 | 2010-04-09 14:15:12 +0300 | [diff] [blame] | 701 | r = taal_dcs_write_1(DCS_BRIGHTNESS, 0xff); |
| 702 | if (r) |
| 703 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 704 | |
Jani Nikula | f2a8b75 | 2010-04-09 14:15:12 +0300 | [diff] [blame] | 705 | r = taal_dcs_write_1(DCS_CTRL_DISPLAY, |
| 706 | (1<<2) | (1<<5)); /* BL | BCTRL */ |
| 707 | if (r) |
| 708 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 709 | |
Jani Nikula | f2a8b75 | 2010-04-09 14:15:12 +0300 | [diff] [blame] | 710 | r = taal_dcs_write_1(DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */ |
| 711 | if (r) |
| 712 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 713 | |
Jani Nikula | f2a8b75 | 2010-04-09 14:15:12 +0300 | [diff] [blame] | 714 | r = taal_set_addr_mode(td->rotate, td->mirror); |
| 715 | if (r) |
| 716 | goto err; |
| 717 | |
| 718 | if (!td->cabc_broken) { |
| 719 | r = taal_dcs_write_1(DCS_WRITE_CABC, td->cabc_mode); |
| 720 | if (r) |
| 721 | goto err; |
| 722 | } |
| 723 | |
| 724 | r = taal_dcs_write_0(DCS_DISPLAY_ON); |
| 725 | if (r) |
| 726 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 727 | |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 728 | r = _taal_enable_te(dssdev, td->te_enabled); |
| 729 | if (r) |
| 730 | goto err; |
| 731 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 732 | td->enabled = 1; |
| 733 | |
| 734 | if (!td->intro_printed) { |
| 735 | dev_info(&dssdev->dev, "revision %02x.%02x.%02x\n", |
| 736 | id1, id2, id3); |
| 737 | if (td->cabc_broken) |
| 738 | dev_info(&dssdev->dev, |
| 739 | "old Taal version, CABC disabled\n"); |
| 740 | td->intro_printed = true; |
| 741 | } |
| 742 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 743 | omapdss_dsi_vc_enable_hs(TCH, true); |
| 744 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 745 | return 0; |
| 746 | err: |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 747 | dev_err(&dssdev->dev, "error while enabling panel, issuing HW reset\n"); |
| 748 | |
| 749 | taal_hw_reset(dssdev); |
| 750 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 751 | omapdss_dsi_display_disable(dssdev); |
| 752 | err0: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 753 | return r; |
| 754 | } |
| 755 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 756 | static void taal_power_off(struct omap_dss_device *dssdev) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 757 | { |
| 758 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 759 | int r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 760 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 761 | r = taal_dcs_write_0(DCS_DISPLAY_OFF); |
| 762 | if (!r) { |
| 763 | r = taal_sleep_in(td); |
| 764 | /* wait a bit so that the message goes through */ |
| 765 | msleep(10); |
| 766 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 767 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 768 | if (r) { |
| 769 | dev_err(&dssdev->dev, |
| 770 | "error disabling panel, issuing HW reset\n"); |
| 771 | taal_hw_reset(dssdev); |
| 772 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 773 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 774 | omapdss_dsi_display_disable(dssdev); |
| 775 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 776 | td->enabled = 0; |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 777 | } |
| 778 | |
| 779 | static int taal_enable(struct omap_dss_device *dssdev) |
| 780 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 781 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 782 | int r; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 783 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 784 | dev_dbg(&dssdev->dev, "enable\n"); |
| 785 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 786 | mutex_lock(&td->lock); |
| 787 | |
| 788 | if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) { |
| 789 | r = -EINVAL; |
| 790 | goto err; |
| 791 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 792 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 793 | dsi_bus_lock(); |
| 794 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 795 | r = taal_power_on(dssdev); |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 796 | |
| 797 | dsi_bus_unlock(); |
| 798 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 799 | if (r) |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 800 | goto err; |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 801 | |
Jani Nikula | 4571a02 | 2010-04-12 10:23:46 +0300 | [diff] [blame] | 802 | #ifdef TAAL_USE_ESD_CHECK |
| 803 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
| 804 | #endif |
| 805 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 806 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
| 807 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 808 | mutex_unlock(&td->lock); |
| 809 | |
| 810 | return 0; |
| 811 | err: |
| 812 | dev_dbg(&dssdev->dev, "enable failed\n"); |
| 813 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 814 | return r; |
| 815 | } |
| 816 | |
| 817 | static void taal_disable(struct omap_dss_device *dssdev) |
| 818 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 819 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 820 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 821 | dev_dbg(&dssdev->dev, "disable\n"); |
| 822 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 823 | mutex_lock(&td->lock); |
| 824 | |
Jani Nikula | 4571a02 | 2010-04-12 10:23:46 +0300 | [diff] [blame] | 825 | cancel_delayed_work(&td->esd_work); |
| 826 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 827 | dsi_bus_lock(); |
| 828 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 829 | if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) |
| 830 | taal_power_off(dssdev); |
| 831 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 832 | dsi_bus_unlock(); |
| 833 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 834 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 835 | |
| 836 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 837 | } |
| 838 | |
| 839 | static int taal_suspend(struct omap_dss_device *dssdev) |
| 840 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 841 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 842 | int r; |
| 843 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 844 | dev_dbg(&dssdev->dev, "suspend\n"); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 845 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 846 | mutex_lock(&td->lock); |
| 847 | |
| 848 | if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) { |
| 849 | r = -EINVAL; |
| 850 | goto err; |
| 851 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 852 | |
Jani Nikula | 4571a02 | 2010-04-12 10:23:46 +0300 | [diff] [blame] | 853 | cancel_delayed_work(&td->esd_work); |
| 854 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 855 | dsi_bus_lock(); |
| 856 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 857 | taal_power_off(dssdev); |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 858 | |
| 859 | dsi_bus_unlock(); |
| 860 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 861 | dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 862 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 863 | mutex_unlock(&td->lock); |
| 864 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 865 | return 0; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 866 | err: |
| 867 | mutex_unlock(&td->lock); |
| 868 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 869 | } |
| 870 | |
| 871 | static int taal_resume(struct omap_dss_device *dssdev) |
| 872 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 873 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 874 | int r; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 875 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 876 | dev_dbg(&dssdev->dev, "resume\n"); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 877 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 878 | mutex_lock(&td->lock); |
| 879 | |
| 880 | if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) { |
| 881 | r = -EINVAL; |
| 882 | goto err; |
| 883 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 884 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 885 | dsi_bus_lock(); |
| 886 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 887 | r = taal_power_on(dssdev); |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 888 | |
| 889 | dsi_bus_unlock(); |
| 890 | |
Jani Nikula | 4571a02 | 2010-04-12 10:23:46 +0300 | [diff] [blame] | 891 | if (r) { |
Jani Nikula | fed44b7 | 2010-04-12 10:25:21 +0300 | [diff] [blame] | 892 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
Jani Nikula | 4571a02 | 2010-04-12 10:23:46 +0300 | [diff] [blame] | 893 | } else { |
Jani Nikula | fed44b7 | 2010-04-12 10:25:21 +0300 | [diff] [blame] | 894 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
Jani Nikula | 4571a02 | 2010-04-12 10:23:46 +0300 | [diff] [blame] | 895 | #ifdef TAAL_USE_ESD_CHECK |
| 896 | queue_delayed_work(td->esd_wq, &td->esd_work, |
| 897 | TAAL_ESD_CHECK_PERIOD); |
| 898 | #endif |
| 899 | } |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 900 | |
| 901 | mutex_unlock(&td->lock); |
| 902 | |
| 903 | return r; |
| 904 | err: |
| 905 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 906 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 907 | } |
| 908 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 909 | static void taal_framedone_cb(int err, void *data) |
| 910 | { |
| 911 | struct omap_dss_device *dssdev = data; |
| 912 | dev_dbg(&dssdev->dev, "framedone, err %d\n", err); |
| 913 | dsi_bus_unlock(); |
| 914 | } |
| 915 | |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 916 | static irqreturn_t taal_te_isr(int irq, void *data) |
| 917 | { |
| 918 | struct omap_dss_device *dssdev = data; |
| 919 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 920 | int old; |
| 921 | int r; |
| 922 | |
| 923 | old = atomic_cmpxchg(&td->do_update, 1, 0); |
| 924 | |
| 925 | if (old) { |
| 926 | cancel_delayed_work(&td->te_timeout_work); |
| 927 | |
| 928 | r = omap_dsi_update(dssdev, TCH, |
| 929 | td->update_region.x, |
| 930 | td->update_region.y, |
| 931 | td->update_region.w, |
| 932 | td->update_region.h, |
| 933 | taal_framedone_cb, dssdev); |
| 934 | if (r) |
| 935 | goto err; |
| 936 | } |
| 937 | |
| 938 | return IRQ_HANDLED; |
| 939 | err: |
| 940 | dev_err(&dssdev->dev, "start update failed\n"); |
| 941 | dsi_bus_unlock(); |
| 942 | return IRQ_HANDLED; |
| 943 | } |
| 944 | |
| 945 | static void taal_te_timeout_work_callback(struct work_struct *work) |
| 946 | { |
| 947 | struct taal_data *td = container_of(work, struct taal_data, |
| 948 | te_timeout_work.work); |
| 949 | struct omap_dss_device *dssdev = td->dssdev; |
| 950 | |
| 951 | dev_err(&dssdev->dev, "TE not received for 250ms!\n"); |
| 952 | |
| 953 | atomic_set(&td->do_update, 0); |
| 954 | dsi_bus_unlock(); |
| 955 | } |
| 956 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 957 | static int taal_update(struct omap_dss_device *dssdev, |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 958 | u16 x, u16 y, u16 w, u16 h) |
| 959 | { |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 960 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 961 | int r; |
| 962 | |
| 963 | dev_dbg(&dssdev->dev, "update %d, %d, %d x %d\n", x, y, w, h); |
| 964 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 965 | mutex_lock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 966 | dsi_bus_lock(); |
| 967 | |
| 968 | if (!td->enabled) { |
| 969 | r = 0; |
| 970 | goto err; |
| 971 | } |
| 972 | |
| 973 | r = omap_dsi_prepare_update(dssdev, &x, &y, &w, &h); |
| 974 | if (r) |
| 975 | goto err; |
| 976 | |
| 977 | r = taal_set_update_window(x, y, w, h); |
| 978 | if (r) |
| 979 | goto err; |
| 980 | |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 981 | if (td->te_enabled && td->use_ext_te) { |
| 982 | td->update_region.x = x; |
| 983 | td->update_region.y = y; |
| 984 | td->update_region.w = w; |
| 985 | td->update_region.h = h; |
| 986 | barrier(); |
| 987 | schedule_delayed_work(&td->te_timeout_work, |
| 988 | msecs_to_jiffies(250)); |
| 989 | atomic_set(&td->do_update, 1); |
| 990 | } else { |
| 991 | r = omap_dsi_update(dssdev, TCH, x, y, w, h, |
| 992 | taal_framedone_cb, dssdev); |
| 993 | if (r) |
| 994 | goto err; |
| 995 | } |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 996 | |
| 997 | /* note: no bus_unlock here. unlock is in framedone_cb */ |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 998 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 999 | return 0; |
| 1000 | err: |
| 1001 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1002 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 1003 | return r; |
| 1004 | } |
| 1005 | |
| 1006 | static int taal_sync(struct omap_dss_device *dssdev) |
| 1007 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1008 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 1009 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 1010 | dev_dbg(&dssdev->dev, "sync\n"); |
| 1011 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1012 | mutex_lock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 1013 | dsi_bus_lock(); |
| 1014 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1015 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 1016 | |
| 1017 | dev_dbg(&dssdev->dev, "sync done\n"); |
| 1018 | |
| 1019 | return 0; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1020 | } |
| 1021 | |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 1022 | static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1023 | { |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1024 | int r; |
| 1025 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1026 | if (enable) |
| 1027 | r = taal_dcs_write_1(DCS_TEAR_ON, 0); |
| 1028 | else |
| 1029 | r = taal_dcs_write_0(DCS_TEAR_OFF); |
| 1030 | |
Jani Nikula | 7ae2fb1 | 2010-04-13 10:57:52 +0300 | [diff] [blame^] | 1031 | if (!td->use_ext_te) |
| 1032 | omapdss_dsi_enable_te(dssdev, enable); |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1033 | |
| 1034 | /* XXX for some reason, DSI TE breaks if we don't wait here. |
| 1035 | * Panel bug? Needs more studying */ |
| 1036 | msleep(100); |
| 1037 | |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 1038 | return r; |
| 1039 | } |
| 1040 | |
| 1041 | static int taal_enable_te(struct omap_dss_device *dssdev, bool enable) |
| 1042 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1043 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 1044 | int r; |
| 1045 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1046 | mutex_lock(&td->lock); |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 1047 | dsi_bus_lock(); |
| 1048 | |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1049 | if (td->enabled) { |
| 1050 | r = _taal_enable_te(dssdev, enable); |
| 1051 | if (r) |
| 1052 | goto err; |
| 1053 | } |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 1054 | |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1055 | td->te_enabled = enable; |
| 1056 | |
| 1057 | dsi_bus_unlock(); |
| 1058 | mutex_unlock(&td->lock); |
| 1059 | |
| 1060 | return 0; |
| 1061 | err: |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1062 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1063 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1064 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1065 | return r; |
| 1066 | } |
| 1067 | |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1068 | static int taal_get_te(struct omap_dss_device *dssdev) |
| 1069 | { |
| 1070 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1071 | int r; |
| 1072 | |
| 1073 | mutex_lock(&td->lock); |
| 1074 | r = td->te_enabled; |
| 1075 | mutex_unlock(&td->lock); |
| 1076 | |
| 1077 | return r; |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1078 | } |
| 1079 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1080 | static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate) |
| 1081 | { |
| 1082 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 1083 | int r; |
| 1084 | |
| 1085 | dev_dbg(&dssdev->dev, "rotate %d\n", rotate); |
| 1086 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1087 | mutex_lock(&td->lock); |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1088 | dsi_bus_lock(); |
| 1089 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1090 | if (td->enabled) { |
| 1091 | r = taal_set_addr_mode(rotate, td->mirror); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1092 | if (r) |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1093 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1094 | } |
| 1095 | |
| 1096 | td->rotate = rotate; |
| 1097 | |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1098 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1099 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1100 | return 0; |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1101 | err: |
| 1102 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1103 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1104 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1105 | } |
| 1106 | |
| 1107 | static u8 taal_get_rotate(struct omap_dss_device *dssdev) |
| 1108 | { |
| 1109 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1110 | int r; |
| 1111 | |
| 1112 | mutex_lock(&td->lock); |
| 1113 | r = td->rotate; |
| 1114 | mutex_unlock(&td->lock); |
| 1115 | |
| 1116 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | static int taal_mirror(struct omap_dss_device *dssdev, bool enable) |
| 1120 | { |
| 1121 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 1122 | int r; |
| 1123 | |
| 1124 | dev_dbg(&dssdev->dev, "mirror %d\n", enable); |
| 1125 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1126 | mutex_lock(&td->lock); |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1127 | dsi_bus_lock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1128 | if (td->enabled) { |
| 1129 | r = taal_set_addr_mode(td->rotate, enable); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1130 | if (r) |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1131 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1132 | } |
| 1133 | |
| 1134 | td->mirror = enable; |
| 1135 | |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1136 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1137 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1138 | return 0; |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1139 | err: |
| 1140 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1141 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1142 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1143 | } |
| 1144 | |
| 1145 | static bool taal_get_mirror(struct omap_dss_device *dssdev) |
| 1146 | { |
| 1147 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1148 | int r; |
| 1149 | |
| 1150 | mutex_lock(&td->lock); |
| 1151 | r = td->mirror; |
| 1152 | mutex_unlock(&td->lock); |
| 1153 | |
| 1154 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1155 | } |
| 1156 | |
| 1157 | static int taal_run_test(struct omap_dss_device *dssdev, int test_num) |
| 1158 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1159 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1160 | u8 id1, id2, id3; |
| 1161 | int r; |
| 1162 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1163 | mutex_lock(&td->lock); |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1164 | |
| 1165 | if (!td->enabled) { |
| 1166 | r = -ENODEV; |
| 1167 | goto err1; |
| 1168 | } |
| 1169 | |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1170 | dsi_bus_lock(); |
| 1171 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1172 | r = taal_dcs_read_1(DCS_GET_ID1, &id1); |
| 1173 | if (r) |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1174 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1175 | r = taal_dcs_read_1(DCS_GET_ID2, &id2); |
| 1176 | if (r) |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1177 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1178 | r = taal_dcs_read_1(DCS_GET_ID3, &id3); |
| 1179 | if (r) |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1180 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1181 | |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1182 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1183 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1184 | return 0; |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1185 | err2: |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1186 | dsi_bus_unlock(); |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1187 | err1: |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1188 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1189 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | static int taal_memory_read(struct omap_dss_device *dssdev, |
| 1193 | void *buf, size_t size, |
| 1194 | u16 x, u16 y, u16 w, u16 h) |
| 1195 | { |
| 1196 | int r; |
| 1197 | int first = 1; |
| 1198 | int plen; |
| 1199 | unsigned buf_used = 0; |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1200 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 1201 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1202 | if (size < w * h * 3) |
| 1203 | return -ENOMEM; |
| 1204 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1205 | mutex_lock(&td->lock); |
| 1206 | |
| 1207 | if (!td->enabled) { |
| 1208 | r = -ENODEV; |
| 1209 | goto err1; |
| 1210 | } |
| 1211 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1212 | size = min(w * h * 3, |
| 1213 | dssdev->panel.timings.x_res * |
| 1214 | dssdev->panel.timings.y_res * 3); |
| 1215 | |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1216 | dsi_bus_lock(); |
| 1217 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1218 | /* plen 1 or 2 goes into short packet. until checksum error is fixed, |
| 1219 | * use short packets. plen 32 works, but bigger packets seem to cause |
| 1220 | * an error. */ |
| 1221 | if (size % 2) |
| 1222 | plen = 1; |
| 1223 | else |
| 1224 | plen = 2; |
| 1225 | |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1226 | taal_set_update_window(x, y, w, h); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1227 | |
| 1228 | r = dsi_vc_set_max_rx_packet_size(TCH, plen); |
| 1229 | if (r) |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1230 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1231 | |
| 1232 | while (buf_used < size) { |
| 1233 | u8 dcs_cmd = first ? 0x2e : 0x3e; |
| 1234 | first = 0; |
| 1235 | |
| 1236 | r = dsi_vc_dcs_read(TCH, dcs_cmd, |
| 1237 | buf + buf_used, size - buf_used); |
| 1238 | |
| 1239 | if (r < 0) { |
| 1240 | dev_err(&dssdev->dev, "read error\n"); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1241 | goto err3; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1242 | } |
| 1243 | |
| 1244 | buf_used += r; |
| 1245 | |
| 1246 | if (r < plen) { |
| 1247 | dev_err(&dssdev->dev, "short read\n"); |
| 1248 | break; |
| 1249 | } |
| 1250 | |
| 1251 | if (signal_pending(current)) { |
| 1252 | dev_err(&dssdev->dev, "signal pending, " |
| 1253 | "aborting memory read\n"); |
| 1254 | r = -ERESTARTSYS; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1255 | goto err3; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | r = buf_used; |
| 1260 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1261 | err3: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1262 | dsi_vc_set_max_rx_packet_size(TCH, 1); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1263 | err2: |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1264 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1265 | err1: |
| 1266 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1267 | return r; |
| 1268 | } |
| 1269 | |
| 1270 | static void taal_esd_work(struct work_struct *work) |
| 1271 | { |
| 1272 | struct taal_data *td = container_of(work, struct taal_data, |
| 1273 | esd_work.work); |
| 1274 | struct omap_dss_device *dssdev = td->dssdev; |
| 1275 | u8 state1, state2; |
| 1276 | int r; |
| 1277 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1278 | mutex_lock(&td->lock); |
| 1279 | |
| 1280 | if (!td->enabled) { |
| 1281 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1282 | return; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1283 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1284 | |
| 1285 | dsi_bus_lock(); |
| 1286 | |
| 1287 | r = taal_dcs_read_1(DCS_RDDSDR, &state1); |
| 1288 | if (r) { |
| 1289 | dev_err(&dssdev->dev, "failed to read Taal status\n"); |
| 1290 | goto err; |
| 1291 | } |
| 1292 | |
| 1293 | /* Run self diagnostics */ |
| 1294 | r = taal_sleep_out(td); |
| 1295 | if (r) { |
| 1296 | dev_err(&dssdev->dev, "failed to run Taal self-diagnostics\n"); |
| 1297 | goto err; |
| 1298 | } |
| 1299 | |
| 1300 | r = taal_dcs_read_1(DCS_RDDSDR, &state2); |
| 1301 | if (r) { |
| 1302 | dev_err(&dssdev->dev, "failed to read Taal status\n"); |
| 1303 | goto err; |
| 1304 | } |
| 1305 | |
| 1306 | /* Each sleep out command will trigger a self diagnostic and flip |
| 1307 | * Bit6 if the test passes. |
| 1308 | */ |
| 1309 | if (!((state1 ^ state2) & (1 << 6))) { |
| 1310 | dev_err(&dssdev->dev, "LCD self diagnostics failed\n"); |
| 1311 | goto err; |
| 1312 | } |
| 1313 | /* Self-diagnostics result is also shown on TE GPIO line. We need |
| 1314 | * to re-enable TE after self diagnostics */ |
Tomi Valkeinen | 1189b7f | 2010-03-01 13:52:10 +0200 | [diff] [blame] | 1315 | if (td->use_ext_te && td->te_enabled) { |
| 1316 | r = taal_dcs_write_1(DCS_TEAR_ON, 0); |
| 1317 | if (r) |
| 1318 | goto err; |
| 1319 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1320 | |
| 1321 | dsi_bus_unlock(); |
| 1322 | |
| 1323 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
| 1324 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1325 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1326 | return; |
| 1327 | err: |
| 1328 | dev_err(&dssdev->dev, "performing LCD reset\n"); |
| 1329 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1330 | taal_power_off(dssdev); |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 1331 | taal_hw_reset(dssdev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1332 | taal_power_on(dssdev); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1333 | |
| 1334 | dsi_bus_unlock(); |
| 1335 | |
| 1336 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1337 | |
| 1338 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1339 | } |
| 1340 | |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 1341 | static int taal_set_update_mode(struct omap_dss_device *dssdev, |
| 1342 | enum omap_dss_update_mode mode) |
| 1343 | { |
| 1344 | if (mode != OMAP_DSS_UPDATE_MANUAL) |
| 1345 | return -EINVAL; |
| 1346 | return 0; |
| 1347 | } |
| 1348 | |
| 1349 | static enum omap_dss_update_mode taal_get_update_mode( |
| 1350 | struct omap_dss_device *dssdev) |
| 1351 | { |
| 1352 | return OMAP_DSS_UPDATE_MANUAL; |
| 1353 | } |
| 1354 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1355 | static struct omap_dss_driver taal_driver = { |
| 1356 | .probe = taal_probe, |
| 1357 | .remove = taal_remove, |
| 1358 | |
| 1359 | .enable = taal_enable, |
| 1360 | .disable = taal_disable, |
| 1361 | .suspend = taal_suspend, |
| 1362 | .resume = taal_resume, |
| 1363 | |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 1364 | .set_update_mode = taal_set_update_mode, |
| 1365 | .get_update_mode = taal_get_update_mode, |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 1366 | |
| 1367 | .update = taal_update, |
| 1368 | .sync = taal_sync, |
| 1369 | |
Tomi Valkeinen | 96adcec | 2010-01-11 13:54:33 +0200 | [diff] [blame] | 1370 | .get_resolution = taal_get_resolution, |
Tomi Valkeinen | a269950 | 2010-01-11 14:33:40 +0200 | [diff] [blame] | 1371 | .get_recommended_bpp = omapdss_default_get_recommended_bpp, |
| 1372 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1373 | .enable_te = taal_enable_te, |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1374 | .get_te = taal_get_te, |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1375 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1376 | .set_rotate = taal_rotate, |
| 1377 | .get_rotate = taal_get_rotate, |
| 1378 | .set_mirror = taal_mirror, |
| 1379 | .get_mirror = taal_get_mirror, |
| 1380 | .run_test = taal_run_test, |
| 1381 | .memory_read = taal_memory_read, |
| 1382 | |
Tomi Valkeinen | 69b2048 | 2010-01-20 12:11:25 +0200 | [diff] [blame] | 1383 | .get_timings = taal_get_timings, |
| 1384 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1385 | .driver = { |
| 1386 | .name = "taal", |
| 1387 | .owner = THIS_MODULE, |
| 1388 | }, |
| 1389 | }; |
| 1390 | |
| 1391 | static int __init taal_init(void) |
| 1392 | { |
| 1393 | omap_dss_register_driver(&taal_driver); |
| 1394 | |
| 1395 | return 0; |
| 1396 | } |
| 1397 | |
| 1398 | static void __exit taal_exit(void) |
| 1399 | { |
| 1400 | omap_dss_unregister_driver(&taal_driver); |
| 1401 | } |
| 1402 | |
| 1403 | module_init(taal_init); |
| 1404 | module_exit(taal_exit); |
| 1405 | |
| 1406 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); |
| 1407 | MODULE_DESCRIPTION("Taal Driver"); |
| 1408 | MODULE_LICENSE("GPL"); |