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> |
| 31 | #include <linux/completion.h> |
| 32 | #include <linux/workqueue.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 33 | #include <linux/slab.h> |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 34 | #include <linux/mutex.h> |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 35 | |
| 36 | #include <plat/display.h> |
| 37 | |
| 38 | /* DSI Virtual channel. Hardcoded for now. */ |
| 39 | #define TCH 0 |
| 40 | |
| 41 | #define DCS_READ_NUM_ERRORS 0x05 |
| 42 | #define DCS_READ_POWER_MODE 0x0a |
| 43 | #define DCS_READ_MADCTL 0x0b |
| 44 | #define DCS_READ_PIXEL_FORMAT 0x0c |
| 45 | #define DCS_RDDSDR 0x0f |
| 46 | #define DCS_SLEEP_IN 0x10 |
| 47 | #define DCS_SLEEP_OUT 0x11 |
| 48 | #define DCS_DISPLAY_OFF 0x28 |
| 49 | #define DCS_DISPLAY_ON 0x29 |
| 50 | #define DCS_COLUMN_ADDR 0x2a |
| 51 | #define DCS_PAGE_ADDR 0x2b |
| 52 | #define DCS_MEMORY_WRITE 0x2c |
| 53 | #define DCS_TEAR_OFF 0x34 |
| 54 | #define DCS_TEAR_ON 0x35 |
| 55 | #define DCS_MEM_ACC_CTRL 0x36 |
| 56 | #define DCS_PIXEL_FORMAT 0x3a |
| 57 | #define DCS_BRIGHTNESS 0x51 |
| 58 | #define DCS_CTRL_DISPLAY 0x53 |
| 59 | #define DCS_WRITE_CABC 0x55 |
| 60 | #define DCS_READ_CABC 0x56 |
| 61 | #define DCS_GET_ID1 0xda |
| 62 | #define DCS_GET_ID2 0xdb |
| 63 | #define DCS_GET_ID3 0xdc |
| 64 | |
| 65 | /* #define TAAL_USE_ESD_CHECK */ |
| 66 | #define TAAL_ESD_CHECK_PERIOD msecs_to_jiffies(5000) |
| 67 | |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 68 | static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable); |
| 69 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 70 | struct taal_data { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 71 | struct mutex lock; |
| 72 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 73 | struct backlight_device *bldev; |
| 74 | |
| 75 | unsigned long hw_guard_end; /* next value of jiffies when we can |
| 76 | * issue the next sleep in/out command |
| 77 | */ |
| 78 | unsigned long hw_guard_wait; /* max guard time in jiffies */ |
| 79 | |
| 80 | struct omap_dss_device *dssdev; |
| 81 | |
| 82 | bool enabled; |
| 83 | u8 rotate; |
| 84 | bool mirror; |
| 85 | |
| 86 | bool te_enabled; |
| 87 | bool use_ext_te; |
| 88 | struct completion te_completion; |
| 89 | |
| 90 | bool use_dsi_bl; |
| 91 | |
| 92 | bool cabc_broken; |
| 93 | unsigned cabc_mode; |
| 94 | |
| 95 | bool intro_printed; |
| 96 | |
| 97 | struct workqueue_struct *esd_wq; |
| 98 | struct delayed_work esd_work; |
| 99 | }; |
| 100 | |
| 101 | static void taal_esd_work(struct work_struct *work); |
| 102 | |
| 103 | static void hw_guard_start(struct taal_data *td, int guard_msec) |
| 104 | { |
| 105 | td->hw_guard_wait = msecs_to_jiffies(guard_msec); |
| 106 | td->hw_guard_end = jiffies + td->hw_guard_wait; |
| 107 | } |
| 108 | |
| 109 | static void hw_guard_wait(struct taal_data *td) |
| 110 | { |
| 111 | unsigned long wait = td->hw_guard_end - jiffies; |
| 112 | |
| 113 | if ((long)wait > 0 && wait <= td->hw_guard_wait) { |
| 114 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 115 | schedule_timeout(wait); |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | static int taal_dcs_read_1(u8 dcs_cmd, u8 *data) |
| 120 | { |
| 121 | int r; |
| 122 | u8 buf[1]; |
| 123 | |
| 124 | r = dsi_vc_dcs_read(TCH, dcs_cmd, buf, 1); |
| 125 | |
| 126 | if (r < 0) |
| 127 | return r; |
| 128 | |
| 129 | *data = buf[0]; |
| 130 | |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | static int taal_dcs_write_0(u8 dcs_cmd) |
| 135 | { |
| 136 | return dsi_vc_dcs_write(TCH, &dcs_cmd, 1); |
| 137 | } |
| 138 | |
| 139 | static int taal_dcs_write_1(u8 dcs_cmd, u8 param) |
| 140 | { |
| 141 | u8 buf[2]; |
| 142 | buf[0] = dcs_cmd; |
| 143 | buf[1] = param; |
| 144 | return dsi_vc_dcs_write(TCH, buf, 2); |
| 145 | } |
| 146 | |
| 147 | static int taal_sleep_in(struct taal_data *td) |
| 148 | |
| 149 | { |
| 150 | u8 cmd; |
| 151 | int r; |
| 152 | |
| 153 | hw_guard_wait(td); |
| 154 | |
| 155 | cmd = DCS_SLEEP_IN; |
| 156 | r = dsi_vc_dcs_write_nosync(TCH, &cmd, 1); |
| 157 | if (r) |
| 158 | return r; |
| 159 | |
| 160 | hw_guard_start(td, 120); |
| 161 | |
| 162 | msleep(5); |
| 163 | |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | static int taal_sleep_out(struct taal_data *td) |
| 168 | { |
| 169 | int r; |
| 170 | |
| 171 | hw_guard_wait(td); |
| 172 | |
| 173 | r = taal_dcs_write_0(DCS_SLEEP_OUT); |
| 174 | if (r) |
| 175 | return r; |
| 176 | |
| 177 | hw_guard_start(td, 120); |
| 178 | |
| 179 | msleep(5); |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | static int taal_get_id(u8 *id1, u8 *id2, u8 *id3) |
| 185 | { |
| 186 | int r; |
| 187 | |
| 188 | r = taal_dcs_read_1(DCS_GET_ID1, id1); |
| 189 | if (r) |
| 190 | return r; |
| 191 | r = taal_dcs_read_1(DCS_GET_ID2, id2); |
| 192 | if (r) |
| 193 | return r; |
| 194 | r = taal_dcs_read_1(DCS_GET_ID3, id3); |
| 195 | if (r) |
| 196 | return r; |
| 197 | |
| 198 | return 0; |
| 199 | } |
| 200 | |
| 201 | static int taal_set_addr_mode(u8 rotate, bool mirror) |
| 202 | { |
| 203 | int r; |
| 204 | u8 mode; |
| 205 | int b5, b6, b7; |
| 206 | |
| 207 | r = taal_dcs_read_1(DCS_READ_MADCTL, &mode); |
| 208 | if (r) |
| 209 | return r; |
| 210 | |
| 211 | switch (rotate) { |
| 212 | default: |
| 213 | case 0: |
| 214 | b7 = 0; |
| 215 | b6 = 0; |
| 216 | b5 = 0; |
| 217 | break; |
| 218 | case 1: |
| 219 | b7 = 0; |
| 220 | b6 = 1; |
| 221 | b5 = 1; |
| 222 | break; |
| 223 | case 2: |
| 224 | b7 = 1; |
| 225 | b6 = 1; |
| 226 | b5 = 0; |
| 227 | break; |
| 228 | case 3: |
| 229 | b7 = 1; |
| 230 | b6 = 0; |
| 231 | b5 = 1; |
| 232 | break; |
| 233 | } |
| 234 | |
| 235 | if (mirror) |
| 236 | b6 = !b6; |
| 237 | |
| 238 | mode &= ~((1<<7) | (1<<6) | (1<<5)); |
| 239 | mode |= (b7 << 7) | (b6 << 6) | (b5 << 5); |
| 240 | |
| 241 | return taal_dcs_write_1(DCS_MEM_ACC_CTRL, mode); |
| 242 | } |
| 243 | |
| 244 | static int taal_set_update_window(u16 x, u16 y, u16 w, u16 h) |
| 245 | { |
| 246 | int r; |
| 247 | u16 x1 = x; |
| 248 | u16 x2 = x + w - 1; |
| 249 | u16 y1 = y; |
| 250 | u16 y2 = y + h - 1; |
| 251 | |
| 252 | u8 buf[5]; |
| 253 | buf[0] = DCS_COLUMN_ADDR; |
| 254 | buf[1] = (x1 >> 8) & 0xff; |
| 255 | buf[2] = (x1 >> 0) & 0xff; |
| 256 | buf[3] = (x2 >> 8) & 0xff; |
| 257 | buf[4] = (x2 >> 0) & 0xff; |
| 258 | |
| 259 | r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); |
| 260 | if (r) |
| 261 | return r; |
| 262 | |
| 263 | buf[0] = DCS_PAGE_ADDR; |
| 264 | buf[1] = (y1 >> 8) & 0xff; |
| 265 | buf[2] = (y1 >> 0) & 0xff; |
| 266 | buf[3] = (y2 >> 8) & 0xff; |
| 267 | buf[4] = (y2 >> 0) & 0xff; |
| 268 | |
| 269 | r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); |
| 270 | if (r) |
| 271 | return r; |
| 272 | |
| 273 | dsi_vc_send_bta_sync(TCH); |
| 274 | |
| 275 | return r; |
| 276 | } |
| 277 | |
| 278 | static int taal_bl_update_status(struct backlight_device *dev) |
| 279 | { |
| 280 | struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev); |
| 281 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 282 | int r; |
| 283 | int level; |
| 284 | |
| 285 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| 286 | dev->props.power == FB_BLANK_UNBLANK) |
| 287 | level = dev->props.brightness; |
| 288 | else |
| 289 | level = 0; |
| 290 | |
| 291 | dev_dbg(&dssdev->dev, "update brightness to %d\n", level); |
| 292 | |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 293 | mutex_lock(&td->lock); |
| 294 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 295 | if (td->use_dsi_bl) { |
| 296 | if (td->enabled) { |
| 297 | dsi_bus_lock(); |
| 298 | r = taal_dcs_write_1(DCS_BRIGHTNESS, level); |
| 299 | dsi_bus_unlock(); |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 300 | } else { |
| 301 | r = 0; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 302 | } |
| 303 | } else { |
| 304 | if (!dssdev->set_backlight) |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 305 | r = -EINVAL; |
| 306 | else |
| 307 | r = dssdev->set_backlight(dssdev, level); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 308 | } |
| 309 | |
Tomi Valkeinen | 1cbc870 | 2010-04-15 16:41:07 +0300 | [diff] [blame] | 310 | mutex_unlock(&td->lock); |
| 311 | |
| 312 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | static int taal_bl_get_intensity(struct backlight_device *dev) |
| 316 | { |
| 317 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| 318 | dev->props.power == FB_BLANK_UNBLANK) |
| 319 | return dev->props.brightness; |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | static struct backlight_ops taal_bl_ops = { |
| 325 | .get_brightness = taal_bl_get_intensity, |
| 326 | .update_status = taal_bl_update_status, |
| 327 | }; |
| 328 | |
| 329 | static void taal_get_timings(struct omap_dss_device *dssdev, |
| 330 | struct omap_video_timings *timings) |
| 331 | { |
| 332 | *timings = dssdev->panel.timings; |
| 333 | } |
| 334 | |
| 335 | static void taal_get_resolution(struct omap_dss_device *dssdev, |
| 336 | u16 *xres, u16 *yres) |
| 337 | { |
| 338 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 339 | |
| 340 | if (td->rotate == 0 || td->rotate == 2) { |
| 341 | *xres = dssdev->panel.timings.x_res; |
| 342 | *yres = dssdev->panel.timings.y_res; |
| 343 | } else { |
| 344 | *yres = dssdev->panel.timings.x_res; |
| 345 | *xres = dssdev->panel.timings.y_res; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | static irqreturn_t taal_te_isr(int irq, void *data) |
| 350 | { |
| 351 | struct omap_dss_device *dssdev = data; |
| 352 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 353 | |
| 354 | complete_all(&td->te_completion); |
| 355 | |
| 356 | return IRQ_HANDLED; |
| 357 | } |
| 358 | |
| 359 | static ssize_t taal_num_errors_show(struct device *dev, |
| 360 | struct device_attribute *attr, char *buf) |
| 361 | { |
| 362 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 363 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 364 | u8 errors; |
| 365 | int r; |
| 366 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 367 | mutex_lock(&td->lock); |
| 368 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 369 | if (td->enabled) { |
| 370 | dsi_bus_lock(); |
| 371 | r = taal_dcs_read_1(DCS_READ_NUM_ERRORS, &errors); |
| 372 | dsi_bus_unlock(); |
| 373 | } else { |
| 374 | r = -ENODEV; |
| 375 | } |
| 376 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 377 | mutex_unlock(&td->lock); |
| 378 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 379 | if (r) |
| 380 | return r; |
| 381 | |
| 382 | return snprintf(buf, PAGE_SIZE, "%d\n", errors); |
| 383 | } |
| 384 | |
| 385 | static ssize_t taal_hw_revision_show(struct device *dev, |
| 386 | struct device_attribute *attr, char *buf) |
| 387 | { |
| 388 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 389 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 390 | u8 id1, id2, id3; |
| 391 | int r; |
| 392 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 393 | mutex_lock(&td->lock); |
| 394 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 395 | if (td->enabled) { |
| 396 | dsi_bus_lock(); |
| 397 | r = taal_get_id(&id1, &id2, &id3); |
| 398 | dsi_bus_unlock(); |
| 399 | } else { |
| 400 | r = -ENODEV; |
| 401 | } |
| 402 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 403 | mutex_unlock(&td->lock); |
| 404 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 405 | if (r) |
| 406 | return r; |
| 407 | |
| 408 | return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); |
| 409 | } |
| 410 | |
| 411 | static const char *cabc_modes[] = { |
| 412 | "off", /* used also always when CABC is not supported */ |
| 413 | "ui", |
| 414 | "still-image", |
| 415 | "moving-image", |
| 416 | }; |
| 417 | |
| 418 | static ssize_t show_cabc_mode(struct device *dev, |
| 419 | struct device_attribute *attr, |
| 420 | char *buf) |
| 421 | { |
| 422 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 423 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 424 | const char *mode_str; |
| 425 | int mode; |
| 426 | int len; |
| 427 | |
| 428 | mode = td->cabc_mode; |
| 429 | |
| 430 | mode_str = "unknown"; |
| 431 | if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes)) |
| 432 | mode_str = cabc_modes[mode]; |
| 433 | len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str); |
| 434 | |
| 435 | return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1; |
| 436 | } |
| 437 | |
| 438 | static ssize_t store_cabc_mode(struct device *dev, |
| 439 | struct device_attribute *attr, |
| 440 | const char *buf, size_t count) |
| 441 | { |
| 442 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 443 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 444 | int i; |
| 445 | |
| 446 | for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { |
| 447 | if (sysfs_streq(cabc_modes[i], buf)) |
| 448 | break; |
| 449 | } |
| 450 | |
| 451 | if (i == ARRAY_SIZE(cabc_modes)) |
| 452 | return -EINVAL; |
| 453 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 454 | mutex_lock(&td->lock); |
| 455 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 456 | if (td->enabled) { |
| 457 | dsi_bus_lock(); |
| 458 | if (!td->cabc_broken) |
| 459 | taal_dcs_write_1(DCS_WRITE_CABC, i); |
| 460 | dsi_bus_unlock(); |
| 461 | } |
| 462 | |
| 463 | td->cabc_mode = i; |
| 464 | |
Jani Nikula | 6b31671 | 2010-04-28 11:15:18 +0300 | [diff] [blame] | 465 | mutex_unlock(&td->lock); |
| 466 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 467 | return count; |
| 468 | } |
| 469 | |
| 470 | static ssize_t show_cabc_available_modes(struct device *dev, |
| 471 | struct device_attribute *attr, |
| 472 | char *buf) |
| 473 | { |
| 474 | int len; |
| 475 | int i; |
| 476 | |
| 477 | for (i = 0, len = 0; |
| 478 | len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) |
| 479 | len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", |
| 480 | i ? " " : "", cabc_modes[i], |
| 481 | i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); |
| 482 | |
| 483 | return len < PAGE_SIZE ? len : PAGE_SIZE - 1; |
| 484 | } |
| 485 | |
| 486 | static DEVICE_ATTR(num_dsi_errors, S_IRUGO, taal_num_errors_show, NULL); |
| 487 | static DEVICE_ATTR(hw_revision, S_IRUGO, taal_hw_revision_show, NULL); |
| 488 | static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, |
| 489 | show_cabc_mode, store_cabc_mode); |
| 490 | static DEVICE_ATTR(cabc_available_modes, S_IRUGO, |
| 491 | show_cabc_available_modes, NULL); |
| 492 | |
| 493 | static struct attribute *taal_attrs[] = { |
| 494 | &dev_attr_num_dsi_errors.attr, |
| 495 | &dev_attr_hw_revision.attr, |
| 496 | &dev_attr_cabc_mode.attr, |
| 497 | &dev_attr_cabc_available_modes.attr, |
| 498 | NULL, |
| 499 | }; |
| 500 | |
| 501 | static struct attribute_group taal_attr_group = { |
| 502 | .attrs = taal_attrs, |
| 503 | }; |
| 504 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 505 | static void taal_hw_reset(struct omap_dss_device *dssdev) |
| 506 | { |
| 507 | if (dssdev->reset_gpio == -1) |
| 508 | return; |
| 509 | |
| 510 | gpio_set_value(dssdev->reset_gpio, 1); |
| 511 | udelay(10); |
| 512 | /* reset the panel */ |
| 513 | gpio_set_value(dssdev->reset_gpio, 0); |
| 514 | /* assert reset for at least 10us */ |
| 515 | udelay(10); |
| 516 | gpio_set_value(dssdev->reset_gpio, 1); |
| 517 | /* wait 5ms after releasing reset */ |
| 518 | msleep(5); |
| 519 | } |
| 520 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 521 | static int taal_probe(struct omap_dss_device *dssdev) |
| 522 | { |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 523 | struct backlight_properties props; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 524 | struct taal_data *td; |
| 525 | struct backlight_device *bldev; |
| 526 | int r; |
| 527 | |
| 528 | const struct omap_video_timings taal_panel_timings = { |
| 529 | .x_res = 864, |
| 530 | .y_res = 480, |
| 531 | }; |
| 532 | |
| 533 | dev_dbg(&dssdev->dev, "probe\n"); |
| 534 | |
| 535 | dssdev->panel.config = OMAP_DSS_LCD_TFT; |
| 536 | dssdev->panel.timings = taal_panel_timings; |
| 537 | dssdev->ctrl.pixel_size = 24; |
| 538 | |
| 539 | td = kzalloc(sizeof(*td), GFP_KERNEL); |
| 540 | if (!td) { |
| 541 | r = -ENOMEM; |
| 542 | goto err0; |
| 543 | } |
| 544 | td->dssdev = dssdev; |
| 545 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 546 | mutex_init(&td->lock); |
| 547 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 548 | td->esd_wq = create_singlethread_workqueue("taal_esd"); |
| 549 | if (td->esd_wq == NULL) { |
| 550 | dev_err(&dssdev->dev, "can't create ESD workqueue\n"); |
| 551 | r = -ENOMEM; |
Aaro Koskinen | 92fe0ff | 2009-12-09 17:26:25 +0100 | [diff] [blame] | 552 | goto err1; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 553 | } |
| 554 | INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); |
| 555 | |
| 556 | dev_set_drvdata(&dssdev->dev, td); |
| 557 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 558 | taal_hw_reset(dssdev); |
| 559 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 560 | /* if no platform set_backlight() defined, presume DSI backlight |
| 561 | * control */ |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 562 | memset(&props, 0, sizeof(struct backlight_properties)); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 563 | if (!dssdev->set_backlight) |
| 564 | td->use_dsi_bl = true; |
| 565 | |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 566 | if (td->use_dsi_bl) |
| 567 | props.max_brightness = 255; |
| 568 | else |
| 569 | props.max_brightness = 127; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 570 | bldev = backlight_device_register("taal", &dssdev->dev, dssdev, |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 571 | &taal_bl_ops, &props); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 572 | if (IS_ERR(bldev)) { |
| 573 | r = PTR_ERR(bldev); |
Aaro Koskinen | 92fe0ff | 2009-12-09 17:26:25 +0100 | [diff] [blame] | 574 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 575 | } |
| 576 | |
| 577 | td->bldev = bldev; |
| 578 | |
| 579 | bldev->props.fb_blank = FB_BLANK_UNBLANK; |
| 580 | bldev->props.power = FB_BLANK_UNBLANK; |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 581 | if (td->use_dsi_bl) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 582 | bldev->props.brightness = 255; |
Matthew Garrett | a19a6ee | 2010-02-17 16:39:44 -0500 | [diff] [blame] | 583 | else |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 584 | bldev->props.brightness = 127; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 585 | |
| 586 | taal_bl_update_status(bldev); |
| 587 | |
| 588 | if (dssdev->phy.dsi.ext_te) { |
| 589 | int gpio = dssdev->phy.dsi.ext_te_gpio; |
| 590 | |
| 591 | r = gpio_request(gpio, "taal irq"); |
| 592 | if (r) { |
| 593 | dev_err(&dssdev->dev, "GPIO request failed\n"); |
| 594 | goto err3; |
| 595 | } |
| 596 | |
| 597 | gpio_direction_input(gpio); |
| 598 | |
| 599 | r = request_irq(gpio_to_irq(gpio), taal_te_isr, |
| 600 | IRQF_DISABLED | IRQF_TRIGGER_RISING, |
| 601 | "taal vsync", dssdev); |
| 602 | |
| 603 | if (r) { |
| 604 | dev_err(&dssdev->dev, "IRQ request failed\n"); |
| 605 | gpio_free(gpio); |
Jani Nikula | 2f1e5f6 | 2010-04-09 13:52:33 +0300 | [diff] [blame] | 606 | goto err4; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 607 | } |
| 608 | |
| 609 | init_completion(&td->te_completion); |
| 610 | |
| 611 | td->use_ext_te = true; |
| 612 | } |
| 613 | |
| 614 | r = sysfs_create_group(&dssdev->dev.kobj, &taal_attr_group); |
| 615 | if (r) { |
| 616 | dev_err(&dssdev->dev, "failed to create sysfs files\n"); |
Jani Nikula | 2f1e5f6 | 2010-04-09 13:52:33 +0300 | [diff] [blame] | 617 | goto err5; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 618 | } |
| 619 | |
| 620 | return 0; |
Jani Nikula | 2f1e5f6 | 2010-04-09 13:52:33 +0300 | [diff] [blame] | 621 | err5: |
| 622 | if (td->use_ext_te) |
| 623 | free_irq(gpio_to_irq(dssdev->phy.dsi.ext_te_gpio), dssdev); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 624 | err4: |
Jani Nikula | 2f1e5f6 | 2010-04-09 13:52:33 +0300 | [diff] [blame] | 625 | if (td->use_ext_te) |
| 626 | gpio_free(dssdev->phy.dsi.ext_te_gpio); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 627 | err3: |
| 628 | backlight_device_unregister(bldev); |
| 629 | err2: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 630 | destroy_workqueue(td->esd_wq); |
| 631 | err1: |
| 632 | kfree(td); |
| 633 | err0: |
| 634 | return r; |
| 635 | } |
| 636 | |
| 637 | static void taal_remove(struct omap_dss_device *dssdev) |
| 638 | { |
| 639 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 640 | struct backlight_device *bldev; |
| 641 | |
| 642 | dev_dbg(&dssdev->dev, "remove\n"); |
| 643 | |
| 644 | sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group); |
| 645 | |
| 646 | if (td->use_ext_te) { |
| 647 | int gpio = dssdev->phy.dsi.ext_te_gpio; |
| 648 | free_irq(gpio_to_irq(gpio), dssdev); |
| 649 | gpio_free(gpio); |
| 650 | } |
| 651 | |
| 652 | bldev = td->bldev; |
| 653 | bldev->props.power = FB_BLANK_POWERDOWN; |
| 654 | taal_bl_update_status(bldev); |
| 655 | backlight_device_unregister(bldev); |
| 656 | |
| 657 | cancel_delayed_work_sync(&td->esd_work); |
| 658 | destroy_workqueue(td->esd_wq); |
| 659 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 660 | /* reset, to be sure that the panel is in a valid state */ |
| 661 | taal_hw_reset(dssdev); |
| 662 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 663 | kfree(td); |
| 664 | } |
| 665 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 666 | static int taal_power_on(struct omap_dss_device *dssdev) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 667 | { |
| 668 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 669 | u8 id1, id2, id3; |
| 670 | int r; |
| 671 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 672 | /* it seems we have to wait a bit until taal is ready */ |
| 673 | msleep(5); |
| 674 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 675 | r = omapdss_dsi_display_enable(dssdev); |
| 676 | if (r) { |
| 677 | dev_err(&dssdev->dev, "failed to enable DSI\n"); |
| 678 | goto err0; |
| 679 | } |
| 680 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 681 | taal_hw_reset(dssdev); |
| 682 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 683 | omapdss_dsi_vc_enable_hs(TCH, false); |
| 684 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 685 | r = taal_sleep_out(td); |
| 686 | if (r) |
| 687 | goto err; |
| 688 | |
| 689 | r = taal_get_id(&id1, &id2, &id3); |
| 690 | if (r) |
| 691 | goto err; |
| 692 | |
| 693 | /* on early revisions CABC is broken */ |
| 694 | if (id2 == 0x00 || id2 == 0xff || id2 == 0x81) |
| 695 | td->cabc_broken = true; |
| 696 | |
Jani Nikula | f2a8b75 | 2010-04-09 14:15:12 +0300 | [diff] [blame] | 697 | r = taal_dcs_write_1(DCS_BRIGHTNESS, 0xff); |
| 698 | if (r) |
| 699 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 700 | |
Jani Nikula | f2a8b75 | 2010-04-09 14:15:12 +0300 | [diff] [blame] | 701 | r = taal_dcs_write_1(DCS_CTRL_DISPLAY, |
| 702 | (1<<2) | (1<<5)); /* BL | BCTRL */ |
| 703 | if (r) |
| 704 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 705 | |
Jani Nikula | f2a8b75 | 2010-04-09 14:15:12 +0300 | [diff] [blame] | 706 | r = taal_dcs_write_1(DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */ |
| 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_set_addr_mode(td->rotate, td->mirror); |
| 711 | if (r) |
| 712 | goto err; |
| 713 | |
| 714 | if (!td->cabc_broken) { |
| 715 | r = taal_dcs_write_1(DCS_WRITE_CABC, td->cabc_mode); |
| 716 | if (r) |
| 717 | goto err; |
| 718 | } |
| 719 | |
| 720 | r = taal_dcs_write_0(DCS_DISPLAY_ON); |
| 721 | if (r) |
| 722 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 723 | |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 724 | r = _taal_enable_te(dssdev, td->te_enabled); |
| 725 | if (r) |
| 726 | goto err; |
| 727 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 728 | #ifdef TAAL_USE_ESD_CHECK |
| 729 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
| 730 | #endif |
| 731 | |
| 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 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 761 | cancel_delayed_work(&td->esd_work); |
| 762 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 763 | r = taal_dcs_write_0(DCS_DISPLAY_OFF); |
| 764 | if (!r) { |
| 765 | r = taal_sleep_in(td); |
| 766 | /* wait a bit so that the message goes through */ |
| 767 | msleep(10); |
| 768 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 769 | |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 770 | if (r) { |
| 771 | dev_err(&dssdev->dev, |
| 772 | "error disabling panel, issuing HW reset\n"); |
| 773 | taal_hw_reset(dssdev); |
| 774 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 775 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 776 | omapdss_dsi_display_disable(dssdev); |
| 777 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 778 | td->enabled = 0; |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | static int taal_enable(struct omap_dss_device *dssdev) |
| 782 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 783 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 784 | int r; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 785 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 786 | dev_dbg(&dssdev->dev, "enable\n"); |
| 787 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 788 | mutex_lock(&td->lock); |
| 789 | |
| 790 | if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) { |
| 791 | r = -EINVAL; |
| 792 | goto err; |
| 793 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 794 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 795 | dsi_bus_lock(); |
| 796 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 797 | r = taal_power_on(dssdev); |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 798 | |
| 799 | dsi_bus_unlock(); |
| 800 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 801 | if (r) |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 802 | goto err; |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 803 | |
| 804 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
| 805 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 806 | mutex_unlock(&td->lock); |
| 807 | |
| 808 | return 0; |
| 809 | err: |
| 810 | dev_dbg(&dssdev->dev, "enable failed\n"); |
| 811 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 812 | return r; |
| 813 | } |
| 814 | |
| 815 | static void taal_disable(struct omap_dss_device *dssdev) |
| 816 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 817 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 818 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 819 | dev_dbg(&dssdev->dev, "disable\n"); |
| 820 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 821 | mutex_lock(&td->lock); |
| 822 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 823 | dsi_bus_lock(); |
| 824 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 825 | if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) |
| 826 | taal_power_off(dssdev); |
| 827 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 828 | dsi_bus_unlock(); |
| 829 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 830 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 831 | |
| 832 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | static int taal_suspend(struct omap_dss_device *dssdev) |
| 836 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 837 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 838 | int r; |
| 839 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 840 | dev_dbg(&dssdev->dev, "suspend\n"); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 841 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 842 | mutex_lock(&td->lock); |
| 843 | |
| 844 | if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) { |
| 845 | r = -EINVAL; |
| 846 | goto err; |
| 847 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 848 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 849 | dsi_bus_lock(); |
| 850 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 851 | taal_power_off(dssdev); |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 852 | |
| 853 | dsi_bus_unlock(); |
| 854 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 855 | dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 856 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 857 | mutex_unlock(&td->lock); |
| 858 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 859 | return 0; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 860 | err: |
| 861 | mutex_unlock(&td->lock); |
| 862 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 863 | } |
| 864 | |
| 865 | static int taal_resume(struct omap_dss_device *dssdev) |
| 866 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 867 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 868 | int r; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 869 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 870 | dev_dbg(&dssdev->dev, "resume\n"); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 871 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 872 | mutex_lock(&td->lock); |
| 873 | |
| 874 | if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) { |
| 875 | r = -EINVAL; |
| 876 | goto err; |
| 877 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 878 | |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 879 | dsi_bus_lock(); |
| 880 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 881 | r = taal_power_on(dssdev); |
Jani Nikula | 2c2fc15 | 2010-04-12 10:06:14 +0300 | [diff] [blame] | 882 | |
| 883 | dsi_bus_unlock(); |
| 884 | |
Jani Nikula | fed44b7 | 2010-04-12 10:25:21 +0300 | [diff] [blame^] | 885 | if (r) |
| 886 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
| 887 | else |
| 888 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 889 | |
| 890 | mutex_unlock(&td->lock); |
| 891 | |
| 892 | return r; |
| 893 | err: |
| 894 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 895 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 896 | } |
| 897 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 898 | static void taal_framedone_cb(int err, void *data) |
| 899 | { |
| 900 | struct omap_dss_device *dssdev = data; |
| 901 | dev_dbg(&dssdev->dev, "framedone, err %d\n", err); |
| 902 | dsi_bus_unlock(); |
| 903 | } |
| 904 | |
| 905 | static int taal_update(struct omap_dss_device *dssdev, |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 906 | u16 x, u16 y, u16 w, u16 h) |
| 907 | { |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 908 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 909 | int r; |
| 910 | |
| 911 | dev_dbg(&dssdev->dev, "update %d, %d, %d x %d\n", x, y, w, h); |
| 912 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 913 | mutex_lock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 914 | dsi_bus_lock(); |
| 915 | |
| 916 | if (!td->enabled) { |
| 917 | r = 0; |
| 918 | goto err; |
| 919 | } |
| 920 | |
| 921 | r = omap_dsi_prepare_update(dssdev, &x, &y, &w, &h); |
| 922 | if (r) |
| 923 | goto err; |
| 924 | |
| 925 | r = taal_set_update_window(x, y, w, h); |
| 926 | if (r) |
| 927 | goto err; |
| 928 | |
| 929 | r = omap_dsi_update(dssdev, TCH, x, y, w, h, |
| 930 | taal_framedone_cb, dssdev); |
| 931 | if (r) |
| 932 | goto err; |
| 933 | |
| 934 | /* note: no bus_unlock here. unlock is in framedone_cb */ |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 935 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 936 | return 0; |
| 937 | err: |
| 938 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 939 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 940 | return r; |
| 941 | } |
| 942 | |
| 943 | static int taal_sync(struct omap_dss_device *dssdev) |
| 944 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 945 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 946 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 947 | dev_dbg(&dssdev->dev, "sync\n"); |
| 948 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 949 | mutex_lock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 950 | dsi_bus_lock(); |
| 951 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 952 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 953 | |
| 954 | dev_dbg(&dssdev->dev, "sync done\n"); |
| 955 | |
| 956 | return 0; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 957 | } |
| 958 | |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 959 | static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 960 | { |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 961 | int r; |
| 962 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 963 | if (enable) |
| 964 | r = taal_dcs_write_1(DCS_TEAR_ON, 0); |
| 965 | else |
| 966 | r = taal_dcs_write_0(DCS_TEAR_OFF); |
| 967 | |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 968 | omapdss_dsi_enable_te(dssdev, enable); |
| 969 | |
| 970 | /* XXX for some reason, DSI TE breaks if we don't wait here. |
| 971 | * Panel bug? Needs more studying */ |
| 972 | msleep(100); |
| 973 | |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 974 | return r; |
| 975 | } |
| 976 | |
| 977 | static int taal_enable_te(struct omap_dss_device *dssdev, bool enable) |
| 978 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 979 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 980 | int r; |
| 981 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 982 | mutex_lock(&td->lock); |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 983 | dsi_bus_lock(); |
| 984 | |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 985 | if (td->enabled) { |
| 986 | r = _taal_enable_te(dssdev, enable); |
| 987 | if (r) |
| 988 | goto err; |
| 989 | } |
Tomi Valkeinen | 21df20f | 2010-03-02 12:13:55 +0200 | [diff] [blame] | 990 | |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 991 | td->te_enabled = enable; |
| 992 | |
| 993 | dsi_bus_unlock(); |
| 994 | mutex_unlock(&td->lock); |
| 995 | |
| 996 | return 0; |
| 997 | err: |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 998 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 999 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1000 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1001 | return r; |
| 1002 | } |
| 1003 | |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1004 | static int taal_get_te(struct omap_dss_device *dssdev) |
| 1005 | { |
| 1006 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1007 | int r; |
| 1008 | |
| 1009 | mutex_lock(&td->lock); |
| 1010 | r = td->te_enabled; |
| 1011 | mutex_unlock(&td->lock); |
| 1012 | |
| 1013 | return r; |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1014 | } |
| 1015 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1016 | static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate) |
| 1017 | { |
| 1018 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 1019 | int r; |
| 1020 | |
| 1021 | dev_dbg(&dssdev->dev, "rotate %d\n", rotate); |
| 1022 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1023 | mutex_lock(&td->lock); |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1024 | dsi_bus_lock(); |
| 1025 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1026 | if (td->enabled) { |
| 1027 | r = taal_set_addr_mode(rotate, td->mirror); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1028 | if (r) |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1029 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1030 | } |
| 1031 | |
| 1032 | td->rotate = rotate; |
| 1033 | |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1034 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1035 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1036 | return 0; |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1037 | err: |
| 1038 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1039 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 1040 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1041 | } |
| 1042 | |
| 1043 | static u8 taal_get_rotate(struct omap_dss_device *dssdev) |
| 1044 | { |
| 1045 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1046 | int r; |
| 1047 | |
| 1048 | mutex_lock(&td->lock); |
| 1049 | r = td->rotate; |
| 1050 | mutex_unlock(&td->lock); |
| 1051 | |
| 1052 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | static int taal_mirror(struct omap_dss_device *dssdev, bool enable) |
| 1056 | { |
| 1057 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 1058 | int r; |
| 1059 | |
| 1060 | dev_dbg(&dssdev->dev, "mirror %d\n", enable); |
| 1061 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1062 | mutex_lock(&td->lock); |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1063 | dsi_bus_lock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1064 | if (td->enabled) { |
| 1065 | r = taal_set_addr_mode(td->rotate, enable); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1066 | if (r) |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1067 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1068 | } |
| 1069 | |
| 1070 | td->mirror = enable; |
| 1071 | |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1072 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1073 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1074 | return 0; |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1075 | err: |
| 1076 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1077 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 1078 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1079 | } |
| 1080 | |
| 1081 | static bool taal_get_mirror(struct omap_dss_device *dssdev) |
| 1082 | { |
| 1083 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1084 | int r; |
| 1085 | |
| 1086 | mutex_lock(&td->lock); |
| 1087 | r = td->mirror; |
| 1088 | mutex_unlock(&td->lock); |
| 1089 | |
| 1090 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1091 | } |
| 1092 | |
| 1093 | static int taal_run_test(struct omap_dss_device *dssdev, int test_num) |
| 1094 | { |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1095 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1096 | u8 id1, id2, id3; |
| 1097 | int r; |
| 1098 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1099 | mutex_lock(&td->lock); |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1100 | |
| 1101 | if (!td->enabled) { |
| 1102 | r = -ENODEV; |
| 1103 | goto err1; |
| 1104 | } |
| 1105 | |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1106 | dsi_bus_lock(); |
| 1107 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1108 | r = taal_dcs_read_1(DCS_GET_ID1, &id1); |
| 1109 | if (r) |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1110 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1111 | r = taal_dcs_read_1(DCS_GET_ID2, &id2); |
| 1112 | if (r) |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1113 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1114 | r = taal_dcs_read_1(DCS_GET_ID3, &id3); |
| 1115 | if (r) |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1116 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1117 | |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1118 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1119 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1120 | return 0; |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1121 | err2: |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1122 | dsi_bus_unlock(); |
Jani Nikula | ee52c0a | 2010-04-12 09:36:05 +0300 | [diff] [blame] | 1123 | err1: |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1124 | mutex_unlock(&td->lock); |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 1125 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1126 | } |
| 1127 | |
| 1128 | static int taal_memory_read(struct omap_dss_device *dssdev, |
| 1129 | void *buf, size_t size, |
| 1130 | u16 x, u16 y, u16 w, u16 h) |
| 1131 | { |
| 1132 | int r; |
| 1133 | int first = 1; |
| 1134 | int plen; |
| 1135 | unsigned buf_used = 0; |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1136 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 1137 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1138 | if (size < w * h * 3) |
| 1139 | return -ENOMEM; |
| 1140 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1141 | mutex_lock(&td->lock); |
| 1142 | |
| 1143 | if (!td->enabled) { |
| 1144 | r = -ENODEV; |
| 1145 | goto err1; |
| 1146 | } |
| 1147 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1148 | size = min(w * h * 3, |
| 1149 | dssdev->panel.timings.x_res * |
| 1150 | dssdev->panel.timings.y_res * 3); |
| 1151 | |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1152 | dsi_bus_lock(); |
| 1153 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1154 | /* plen 1 or 2 goes into short packet. until checksum error is fixed, |
| 1155 | * use short packets. plen 32 works, but bigger packets seem to cause |
| 1156 | * an error. */ |
| 1157 | if (size % 2) |
| 1158 | plen = 1; |
| 1159 | else |
| 1160 | plen = 2; |
| 1161 | |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1162 | taal_set_update_window(x, y, w, h); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1163 | |
| 1164 | r = dsi_vc_set_max_rx_packet_size(TCH, plen); |
| 1165 | if (r) |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1166 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1167 | |
| 1168 | while (buf_used < size) { |
| 1169 | u8 dcs_cmd = first ? 0x2e : 0x3e; |
| 1170 | first = 0; |
| 1171 | |
| 1172 | r = dsi_vc_dcs_read(TCH, dcs_cmd, |
| 1173 | buf + buf_used, size - buf_used); |
| 1174 | |
| 1175 | if (r < 0) { |
| 1176 | dev_err(&dssdev->dev, "read error\n"); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1177 | goto err3; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1178 | } |
| 1179 | |
| 1180 | buf_used += r; |
| 1181 | |
| 1182 | if (r < plen) { |
| 1183 | dev_err(&dssdev->dev, "short read\n"); |
| 1184 | break; |
| 1185 | } |
| 1186 | |
| 1187 | if (signal_pending(current)) { |
| 1188 | dev_err(&dssdev->dev, "signal pending, " |
| 1189 | "aborting memory read\n"); |
| 1190 | r = -ERESTARTSYS; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1191 | goto err3; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1192 | } |
| 1193 | } |
| 1194 | |
| 1195 | r = buf_used; |
| 1196 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1197 | err3: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1198 | dsi_vc_set_max_rx_packet_size(TCH, 1); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1199 | err2: |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1200 | dsi_bus_unlock(); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1201 | err1: |
| 1202 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1203 | return r; |
| 1204 | } |
| 1205 | |
| 1206 | static void taal_esd_work(struct work_struct *work) |
| 1207 | { |
| 1208 | struct taal_data *td = container_of(work, struct taal_data, |
| 1209 | esd_work.work); |
| 1210 | struct omap_dss_device *dssdev = td->dssdev; |
| 1211 | u8 state1, state2; |
| 1212 | int r; |
| 1213 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1214 | mutex_lock(&td->lock); |
| 1215 | |
| 1216 | if (!td->enabled) { |
| 1217 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1218 | return; |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1219 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1220 | |
| 1221 | dsi_bus_lock(); |
| 1222 | |
| 1223 | r = taal_dcs_read_1(DCS_RDDSDR, &state1); |
| 1224 | if (r) { |
| 1225 | dev_err(&dssdev->dev, "failed to read Taal status\n"); |
| 1226 | goto err; |
| 1227 | } |
| 1228 | |
| 1229 | /* Run self diagnostics */ |
| 1230 | r = taal_sleep_out(td); |
| 1231 | if (r) { |
| 1232 | dev_err(&dssdev->dev, "failed to run Taal self-diagnostics\n"); |
| 1233 | goto err; |
| 1234 | } |
| 1235 | |
| 1236 | r = taal_dcs_read_1(DCS_RDDSDR, &state2); |
| 1237 | if (r) { |
| 1238 | dev_err(&dssdev->dev, "failed to read Taal status\n"); |
| 1239 | goto err; |
| 1240 | } |
| 1241 | |
| 1242 | /* Each sleep out command will trigger a self diagnostic and flip |
| 1243 | * Bit6 if the test passes. |
| 1244 | */ |
| 1245 | if (!((state1 ^ state2) & (1 << 6))) { |
| 1246 | dev_err(&dssdev->dev, "LCD self diagnostics failed\n"); |
| 1247 | goto err; |
| 1248 | } |
| 1249 | /* Self-diagnostics result is also shown on TE GPIO line. We need |
| 1250 | * to re-enable TE after self diagnostics */ |
Tomi Valkeinen | 1189b7f | 2010-03-01 13:52:10 +0200 | [diff] [blame] | 1251 | if (td->use_ext_te && td->te_enabled) { |
| 1252 | r = taal_dcs_write_1(DCS_TEAR_ON, 0); |
| 1253 | if (r) |
| 1254 | goto err; |
| 1255 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1256 | |
| 1257 | dsi_bus_unlock(); |
| 1258 | |
| 1259 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
| 1260 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1261 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1262 | return; |
| 1263 | err: |
| 1264 | dev_err(&dssdev->dev, "performing LCD reset\n"); |
| 1265 | |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1266 | taal_power_off(dssdev); |
Jani Nikula | 006db7b | 2010-04-09 12:25:59 +0300 | [diff] [blame] | 1267 | taal_hw_reset(dssdev); |
Tomi Valkeinen | a3201a0 | 2010-03-03 14:31:45 +0200 | [diff] [blame] | 1268 | taal_power_on(dssdev); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1269 | |
| 1270 | dsi_bus_unlock(); |
| 1271 | |
| 1272 | 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] | 1273 | |
| 1274 | mutex_unlock(&td->lock); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1275 | } |
| 1276 | |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 1277 | static int taal_set_update_mode(struct omap_dss_device *dssdev, |
| 1278 | enum omap_dss_update_mode mode) |
| 1279 | { |
| 1280 | if (mode != OMAP_DSS_UPDATE_MANUAL) |
| 1281 | return -EINVAL; |
| 1282 | return 0; |
| 1283 | } |
| 1284 | |
| 1285 | static enum omap_dss_update_mode taal_get_update_mode( |
| 1286 | struct omap_dss_device *dssdev) |
| 1287 | { |
| 1288 | return OMAP_DSS_UPDATE_MANUAL; |
| 1289 | } |
| 1290 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1291 | static struct omap_dss_driver taal_driver = { |
| 1292 | .probe = taal_probe, |
| 1293 | .remove = taal_remove, |
| 1294 | |
| 1295 | .enable = taal_enable, |
| 1296 | .disable = taal_disable, |
| 1297 | .suspend = taal_suspend, |
| 1298 | .resume = taal_resume, |
| 1299 | |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 1300 | .set_update_mode = taal_set_update_mode, |
| 1301 | .get_update_mode = taal_get_update_mode, |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 1302 | |
| 1303 | .update = taal_update, |
| 1304 | .sync = taal_sync, |
| 1305 | |
Tomi Valkeinen | 96adcec | 2010-01-11 13:54:33 +0200 | [diff] [blame] | 1306 | .get_resolution = taal_get_resolution, |
Tomi Valkeinen | a269950 | 2010-01-11 14:33:40 +0200 | [diff] [blame] | 1307 | .get_recommended_bpp = omapdss_default_get_recommended_bpp, |
| 1308 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1309 | .enable_te = taal_enable_te, |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1310 | .get_te = taal_get_te, |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1311 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1312 | .set_rotate = taal_rotate, |
| 1313 | .get_rotate = taal_get_rotate, |
| 1314 | .set_mirror = taal_mirror, |
| 1315 | .get_mirror = taal_get_mirror, |
| 1316 | .run_test = taal_run_test, |
| 1317 | .memory_read = taal_memory_read, |
| 1318 | |
Tomi Valkeinen | 69b2048 | 2010-01-20 12:11:25 +0200 | [diff] [blame] | 1319 | .get_timings = taal_get_timings, |
| 1320 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1321 | .driver = { |
| 1322 | .name = "taal", |
| 1323 | .owner = THIS_MODULE, |
| 1324 | }, |
| 1325 | }; |
| 1326 | |
| 1327 | static int __init taal_init(void) |
| 1328 | { |
| 1329 | omap_dss_register_driver(&taal_driver); |
| 1330 | |
| 1331 | return 0; |
| 1332 | } |
| 1333 | |
| 1334 | static void __exit taal_exit(void) |
| 1335 | { |
| 1336 | omap_dss_unregister_driver(&taal_driver); |
| 1337 | } |
| 1338 | |
| 1339 | module_init(taal_init); |
| 1340 | module_exit(taal_exit); |
| 1341 | |
| 1342 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); |
| 1343 | MODULE_DESCRIPTION("Taal Driver"); |
| 1344 | MODULE_LICENSE("GPL"); |