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> |
| 33 | |
| 34 | #include <plat/display.h> |
| 35 | |
| 36 | /* DSI Virtual channel. Hardcoded for now. */ |
| 37 | #define TCH 0 |
| 38 | |
| 39 | #define DCS_READ_NUM_ERRORS 0x05 |
| 40 | #define DCS_READ_POWER_MODE 0x0a |
| 41 | #define DCS_READ_MADCTL 0x0b |
| 42 | #define DCS_READ_PIXEL_FORMAT 0x0c |
| 43 | #define DCS_RDDSDR 0x0f |
| 44 | #define DCS_SLEEP_IN 0x10 |
| 45 | #define DCS_SLEEP_OUT 0x11 |
| 46 | #define DCS_DISPLAY_OFF 0x28 |
| 47 | #define DCS_DISPLAY_ON 0x29 |
| 48 | #define DCS_COLUMN_ADDR 0x2a |
| 49 | #define DCS_PAGE_ADDR 0x2b |
| 50 | #define DCS_MEMORY_WRITE 0x2c |
| 51 | #define DCS_TEAR_OFF 0x34 |
| 52 | #define DCS_TEAR_ON 0x35 |
| 53 | #define DCS_MEM_ACC_CTRL 0x36 |
| 54 | #define DCS_PIXEL_FORMAT 0x3a |
| 55 | #define DCS_BRIGHTNESS 0x51 |
| 56 | #define DCS_CTRL_DISPLAY 0x53 |
| 57 | #define DCS_WRITE_CABC 0x55 |
| 58 | #define DCS_READ_CABC 0x56 |
| 59 | #define DCS_GET_ID1 0xda |
| 60 | #define DCS_GET_ID2 0xdb |
| 61 | #define DCS_GET_ID3 0xdc |
| 62 | |
| 63 | /* #define TAAL_USE_ESD_CHECK */ |
| 64 | #define TAAL_ESD_CHECK_PERIOD msecs_to_jiffies(5000) |
| 65 | |
| 66 | struct taal_data { |
| 67 | struct backlight_device *bldev; |
| 68 | |
| 69 | unsigned long hw_guard_end; /* next value of jiffies when we can |
| 70 | * issue the next sleep in/out command |
| 71 | */ |
| 72 | unsigned long hw_guard_wait; /* max guard time in jiffies */ |
| 73 | |
| 74 | struct omap_dss_device *dssdev; |
| 75 | |
| 76 | bool enabled; |
| 77 | u8 rotate; |
| 78 | bool mirror; |
| 79 | |
| 80 | bool te_enabled; |
| 81 | bool use_ext_te; |
| 82 | struct completion te_completion; |
| 83 | |
| 84 | bool use_dsi_bl; |
| 85 | |
| 86 | bool cabc_broken; |
| 87 | unsigned cabc_mode; |
| 88 | |
| 89 | bool intro_printed; |
| 90 | |
| 91 | struct workqueue_struct *esd_wq; |
| 92 | struct delayed_work esd_work; |
| 93 | }; |
| 94 | |
| 95 | static void taal_esd_work(struct work_struct *work); |
| 96 | |
| 97 | static void hw_guard_start(struct taal_data *td, int guard_msec) |
| 98 | { |
| 99 | td->hw_guard_wait = msecs_to_jiffies(guard_msec); |
| 100 | td->hw_guard_end = jiffies + td->hw_guard_wait; |
| 101 | } |
| 102 | |
| 103 | static void hw_guard_wait(struct taal_data *td) |
| 104 | { |
| 105 | unsigned long wait = td->hw_guard_end - jiffies; |
| 106 | |
| 107 | if ((long)wait > 0 && wait <= td->hw_guard_wait) { |
| 108 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 109 | schedule_timeout(wait); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | static int taal_dcs_read_1(u8 dcs_cmd, u8 *data) |
| 114 | { |
| 115 | int r; |
| 116 | u8 buf[1]; |
| 117 | |
| 118 | r = dsi_vc_dcs_read(TCH, dcs_cmd, buf, 1); |
| 119 | |
| 120 | if (r < 0) |
| 121 | return r; |
| 122 | |
| 123 | *data = buf[0]; |
| 124 | |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | static int taal_dcs_write_0(u8 dcs_cmd) |
| 129 | { |
| 130 | return dsi_vc_dcs_write(TCH, &dcs_cmd, 1); |
| 131 | } |
| 132 | |
| 133 | static int taal_dcs_write_1(u8 dcs_cmd, u8 param) |
| 134 | { |
| 135 | u8 buf[2]; |
| 136 | buf[0] = dcs_cmd; |
| 137 | buf[1] = param; |
| 138 | return dsi_vc_dcs_write(TCH, buf, 2); |
| 139 | } |
| 140 | |
| 141 | static int taal_sleep_in(struct taal_data *td) |
| 142 | |
| 143 | { |
| 144 | u8 cmd; |
| 145 | int r; |
| 146 | |
| 147 | hw_guard_wait(td); |
| 148 | |
| 149 | cmd = DCS_SLEEP_IN; |
| 150 | r = dsi_vc_dcs_write_nosync(TCH, &cmd, 1); |
| 151 | if (r) |
| 152 | return r; |
| 153 | |
| 154 | hw_guard_start(td, 120); |
| 155 | |
| 156 | msleep(5); |
| 157 | |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static int taal_sleep_out(struct taal_data *td) |
| 162 | { |
| 163 | int r; |
| 164 | |
| 165 | hw_guard_wait(td); |
| 166 | |
| 167 | r = taal_dcs_write_0(DCS_SLEEP_OUT); |
| 168 | if (r) |
| 169 | return r; |
| 170 | |
| 171 | hw_guard_start(td, 120); |
| 172 | |
| 173 | msleep(5); |
| 174 | |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | static int taal_get_id(u8 *id1, u8 *id2, u8 *id3) |
| 179 | { |
| 180 | int r; |
| 181 | |
| 182 | r = taal_dcs_read_1(DCS_GET_ID1, id1); |
| 183 | if (r) |
| 184 | return r; |
| 185 | r = taal_dcs_read_1(DCS_GET_ID2, id2); |
| 186 | if (r) |
| 187 | return r; |
| 188 | r = taal_dcs_read_1(DCS_GET_ID3, id3); |
| 189 | if (r) |
| 190 | return r; |
| 191 | |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | static int taal_set_addr_mode(u8 rotate, bool mirror) |
| 196 | { |
| 197 | int r; |
| 198 | u8 mode; |
| 199 | int b5, b6, b7; |
| 200 | |
| 201 | r = taal_dcs_read_1(DCS_READ_MADCTL, &mode); |
| 202 | if (r) |
| 203 | return r; |
| 204 | |
| 205 | switch (rotate) { |
| 206 | default: |
| 207 | case 0: |
| 208 | b7 = 0; |
| 209 | b6 = 0; |
| 210 | b5 = 0; |
| 211 | break; |
| 212 | case 1: |
| 213 | b7 = 0; |
| 214 | b6 = 1; |
| 215 | b5 = 1; |
| 216 | break; |
| 217 | case 2: |
| 218 | b7 = 1; |
| 219 | b6 = 1; |
| 220 | b5 = 0; |
| 221 | break; |
| 222 | case 3: |
| 223 | b7 = 1; |
| 224 | b6 = 0; |
| 225 | b5 = 1; |
| 226 | break; |
| 227 | } |
| 228 | |
| 229 | if (mirror) |
| 230 | b6 = !b6; |
| 231 | |
| 232 | mode &= ~((1<<7) | (1<<6) | (1<<5)); |
| 233 | mode |= (b7 << 7) | (b6 << 6) | (b5 << 5); |
| 234 | |
| 235 | return taal_dcs_write_1(DCS_MEM_ACC_CTRL, mode); |
| 236 | } |
| 237 | |
| 238 | static int taal_set_update_window(u16 x, u16 y, u16 w, u16 h) |
| 239 | { |
| 240 | int r; |
| 241 | u16 x1 = x; |
| 242 | u16 x2 = x + w - 1; |
| 243 | u16 y1 = y; |
| 244 | u16 y2 = y + h - 1; |
| 245 | |
| 246 | u8 buf[5]; |
| 247 | buf[0] = DCS_COLUMN_ADDR; |
| 248 | buf[1] = (x1 >> 8) & 0xff; |
| 249 | buf[2] = (x1 >> 0) & 0xff; |
| 250 | buf[3] = (x2 >> 8) & 0xff; |
| 251 | buf[4] = (x2 >> 0) & 0xff; |
| 252 | |
| 253 | r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); |
| 254 | if (r) |
| 255 | return r; |
| 256 | |
| 257 | buf[0] = DCS_PAGE_ADDR; |
| 258 | buf[1] = (y1 >> 8) & 0xff; |
| 259 | buf[2] = (y1 >> 0) & 0xff; |
| 260 | buf[3] = (y2 >> 8) & 0xff; |
| 261 | buf[4] = (y2 >> 0) & 0xff; |
| 262 | |
| 263 | r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf)); |
| 264 | if (r) |
| 265 | return r; |
| 266 | |
| 267 | dsi_vc_send_bta_sync(TCH); |
| 268 | |
| 269 | return r; |
| 270 | } |
| 271 | |
| 272 | static int taal_bl_update_status(struct backlight_device *dev) |
| 273 | { |
| 274 | struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev); |
| 275 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 276 | int r; |
| 277 | int level; |
| 278 | |
| 279 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| 280 | dev->props.power == FB_BLANK_UNBLANK) |
| 281 | level = dev->props.brightness; |
| 282 | else |
| 283 | level = 0; |
| 284 | |
| 285 | dev_dbg(&dssdev->dev, "update brightness to %d\n", level); |
| 286 | |
| 287 | if (td->use_dsi_bl) { |
| 288 | if (td->enabled) { |
| 289 | dsi_bus_lock(); |
| 290 | r = taal_dcs_write_1(DCS_BRIGHTNESS, level); |
| 291 | dsi_bus_unlock(); |
| 292 | if (r) |
| 293 | return r; |
| 294 | } |
| 295 | } else { |
| 296 | if (!dssdev->set_backlight) |
| 297 | return -EINVAL; |
| 298 | |
| 299 | r = dssdev->set_backlight(dssdev, level); |
| 300 | if (r) |
| 301 | return r; |
| 302 | } |
| 303 | |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | static int taal_bl_get_intensity(struct backlight_device *dev) |
| 308 | { |
| 309 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && |
| 310 | dev->props.power == FB_BLANK_UNBLANK) |
| 311 | return dev->props.brightness; |
| 312 | |
| 313 | return 0; |
| 314 | } |
| 315 | |
| 316 | static struct backlight_ops taal_bl_ops = { |
| 317 | .get_brightness = taal_bl_get_intensity, |
| 318 | .update_status = taal_bl_update_status, |
| 319 | }; |
| 320 | |
| 321 | static void taal_get_timings(struct omap_dss_device *dssdev, |
| 322 | struct omap_video_timings *timings) |
| 323 | { |
| 324 | *timings = dssdev->panel.timings; |
| 325 | } |
| 326 | |
| 327 | static void taal_get_resolution(struct omap_dss_device *dssdev, |
| 328 | u16 *xres, u16 *yres) |
| 329 | { |
| 330 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 331 | |
| 332 | if (td->rotate == 0 || td->rotate == 2) { |
| 333 | *xres = dssdev->panel.timings.x_res; |
| 334 | *yres = dssdev->panel.timings.y_res; |
| 335 | } else { |
| 336 | *yres = dssdev->panel.timings.x_res; |
| 337 | *xres = dssdev->panel.timings.y_res; |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | static irqreturn_t taal_te_isr(int irq, void *data) |
| 342 | { |
| 343 | struct omap_dss_device *dssdev = data; |
| 344 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 345 | |
| 346 | complete_all(&td->te_completion); |
| 347 | |
| 348 | return IRQ_HANDLED; |
| 349 | } |
| 350 | |
| 351 | static ssize_t taal_num_errors_show(struct device *dev, |
| 352 | struct device_attribute *attr, char *buf) |
| 353 | { |
| 354 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 355 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 356 | u8 errors; |
| 357 | int r; |
| 358 | |
| 359 | if (td->enabled) { |
| 360 | dsi_bus_lock(); |
| 361 | r = taal_dcs_read_1(DCS_READ_NUM_ERRORS, &errors); |
| 362 | dsi_bus_unlock(); |
| 363 | } else { |
| 364 | r = -ENODEV; |
| 365 | } |
| 366 | |
| 367 | if (r) |
| 368 | return r; |
| 369 | |
| 370 | return snprintf(buf, PAGE_SIZE, "%d\n", errors); |
| 371 | } |
| 372 | |
| 373 | static ssize_t taal_hw_revision_show(struct device *dev, |
| 374 | struct device_attribute *attr, char *buf) |
| 375 | { |
| 376 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 377 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 378 | u8 id1, id2, id3; |
| 379 | int r; |
| 380 | |
| 381 | if (td->enabled) { |
| 382 | dsi_bus_lock(); |
| 383 | r = taal_get_id(&id1, &id2, &id3); |
| 384 | dsi_bus_unlock(); |
| 385 | } else { |
| 386 | r = -ENODEV; |
| 387 | } |
| 388 | |
| 389 | if (r) |
| 390 | return r; |
| 391 | |
| 392 | return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); |
| 393 | } |
| 394 | |
| 395 | static const char *cabc_modes[] = { |
| 396 | "off", /* used also always when CABC is not supported */ |
| 397 | "ui", |
| 398 | "still-image", |
| 399 | "moving-image", |
| 400 | }; |
| 401 | |
| 402 | static ssize_t show_cabc_mode(struct device *dev, |
| 403 | struct device_attribute *attr, |
| 404 | char *buf) |
| 405 | { |
| 406 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 407 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 408 | const char *mode_str; |
| 409 | int mode; |
| 410 | int len; |
| 411 | |
| 412 | mode = td->cabc_mode; |
| 413 | |
| 414 | mode_str = "unknown"; |
| 415 | if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes)) |
| 416 | mode_str = cabc_modes[mode]; |
| 417 | len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str); |
| 418 | |
| 419 | return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1; |
| 420 | } |
| 421 | |
| 422 | static ssize_t store_cabc_mode(struct device *dev, |
| 423 | struct device_attribute *attr, |
| 424 | const char *buf, size_t count) |
| 425 | { |
| 426 | struct omap_dss_device *dssdev = to_dss_device(dev); |
| 427 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 428 | int i; |
| 429 | |
| 430 | for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { |
| 431 | if (sysfs_streq(cabc_modes[i], buf)) |
| 432 | break; |
| 433 | } |
| 434 | |
| 435 | if (i == ARRAY_SIZE(cabc_modes)) |
| 436 | return -EINVAL; |
| 437 | |
| 438 | if (td->enabled) { |
| 439 | dsi_bus_lock(); |
| 440 | if (!td->cabc_broken) |
| 441 | taal_dcs_write_1(DCS_WRITE_CABC, i); |
| 442 | dsi_bus_unlock(); |
| 443 | } |
| 444 | |
| 445 | td->cabc_mode = i; |
| 446 | |
| 447 | return count; |
| 448 | } |
| 449 | |
| 450 | static ssize_t show_cabc_available_modes(struct device *dev, |
| 451 | struct device_attribute *attr, |
| 452 | char *buf) |
| 453 | { |
| 454 | int len; |
| 455 | int i; |
| 456 | |
| 457 | for (i = 0, len = 0; |
| 458 | len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) |
| 459 | len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", |
| 460 | i ? " " : "", cabc_modes[i], |
| 461 | i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); |
| 462 | |
| 463 | return len < PAGE_SIZE ? len : PAGE_SIZE - 1; |
| 464 | } |
| 465 | |
| 466 | static DEVICE_ATTR(num_dsi_errors, S_IRUGO, taal_num_errors_show, NULL); |
| 467 | static DEVICE_ATTR(hw_revision, S_IRUGO, taal_hw_revision_show, NULL); |
| 468 | static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, |
| 469 | show_cabc_mode, store_cabc_mode); |
| 470 | static DEVICE_ATTR(cabc_available_modes, S_IRUGO, |
| 471 | show_cabc_available_modes, NULL); |
| 472 | |
| 473 | static struct attribute *taal_attrs[] = { |
| 474 | &dev_attr_num_dsi_errors.attr, |
| 475 | &dev_attr_hw_revision.attr, |
| 476 | &dev_attr_cabc_mode.attr, |
| 477 | &dev_attr_cabc_available_modes.attr, |
| 478 | NULL, |
| 479 | }; |
| 480 | |
| 481 | static struct attribute_group taal_attr_group = { |
| 482 | .attrs = taal_attrs, |
| 483 | }; |
| 484 | |
| 485 | static int taal_probe(struct omap_dss_device *dssdev) |
| 486 | { |
| 487 | struct taal_data *td; |
| 488 | struct backlight_device *bldev; |
| 489 | int r; |
| 490 | |
| 491 | const struct omap_video_timings taal_panel_timings = { |
| 492 | .x_res = 864, |
| 493 | .y_res = 480, |
| 494 | }; |
| 495 | |
| 496 | dev_dbg(&dssdev->dev, "probe\n"); |
| 497 | |
| 498 | dssdev->panel.config = OMAP_DSS_LCD_TFT; |
| 499 | dssdev->panel.timings = taal_panel_timings; |
| 500 | dssdev->ctrl.pixel_size = 24; |
| 501 | |
| 502 | td = kzalloc(sizeof(*td), GFP_KERNEL); |
| 503 | if (!td) { |
| 504 | r = -ENOMEM; |
| 505 | goto err0; |
| 506 | } |
| 507 | td->dssdev = dssdev; |
| 508 | |
| 509 | td->esd_wq = create_singlethread_workqueue("taal_esd"); |
| 510 | if (td->esd_wq == NULL) { |
| 511 | dev_err(&dssdev->dev, "can't create ESD workqueue\n"); |
| 512 | r = -ENOMEM; |
Aaro Koskinen | 92fe0ff | 2009-12-09 17:26:25 +0100 | [diff] [blame] | 513 | goto err1; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 514 | } |
| 515 | INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); |
| 516 | |
| 517 | dev_set_drvdata(&dssdev->dev, td); |
| 518 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 519 | /* if no platform set_backlight() defined, presume DSI backlight |
| 520 | * control */ |
| 521 | if (!dssdev->set_backlight) |
| 522 | td->use_dsi_bl = true; |
| 523 | |
| 524 | bldev = backlight_device_register("taal", &dssdev->dev, dssdev, |
| 525 | &taal_bl_ops); |
| 526 | if (IS_ERR(bldev)) { |
| 527 | r = PTR_ERR(bldev); |
Aaro Koskinen | 92fe0ff | 2009-12-09 17:26:25 +0100 | [diff] [blame] | 528 | goto err2; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 529 | } |
| 530 | |
| 531 | td->bldev = bldev; |
| 532 | |
| 533 | bldev->props.fb_blank = FB_BLANK_UNBLANK; |
| 534 | bldev->props.power = FB_BLANK_UNBLANK; |
| 535 | if (td->use_dsi_bl) { |
| 536 | bldev->props.max_brightness = 255; |
| 537 | bldev->props.brightness = 255; |
| 538 | } else { |
| 539 | bldev->props.max_brightness = 127; |
| 540 | bldev->props.brightness = 127; |
| 541 | } |
| 542 | |
| 543 | taal_bl_update_status(bldev); |
| 544 | |
| 545 | if (dssdev->phy.dsi.ext_te) { |
| 546 | int gpio = dssdev->phy.dsi.ext_te_gpio; |
| 547 | |
| 548 | r = gpio_request(gpio, "taal irq"); |
| 549 | if (r) { |
| 550 | dev_err(&dssdev->dev, "GPIO request failed\n"); |
| 551 | goto err3; |
| 552 | } |
| 553 | |
| 554 | gpio_direction_input(gpio); |
| 555 | |
| 556 | r = request_irq(gpio_to_irq(gpio), taal_te_isr, |
| 557 | IRQF_DISABLED | IRQF_TRIGGER_RISING, |
| 558 | "taal vsync", dssdev); |
| 559 | |
| 560 | if (r) { |
| 561 | dev_err(&dssdev->dev, "IRQ request failed\n"); |
| 562 | gpio_free(gpio); |
| 563 | goto err3; |
| 564 | } |
| 565 | |
| 566 | init_completion(&td->te_completion); |
| 567 | |
| 568 | td->use_ext_te = true; |
| 569 | } |
| 570 | |
| 571 | r = sysfs_create_group(&dssdev->dev.kobj, &taal_attr_group); |
| 572 | if (r) { |
| 573 | dev_err(&dssdev->dev, "failed to create sysfs files\n"); |
| 574 | goto err4; |
| 575 | } |
| 576 | |
| 577 | return 0; |
| 578 | err4: |
| 579 | if (td->use_ext_te) { |
| 580 | int gpio = dssdev->phy.dsi.ext_te_gpio; |
| 581 | free_irq(gpio_to_irq(gpio), dssdev); |
| 582 | gpio_free(gpio); |
| 583 | } |
| 584 | err3: |
| 585 | backlight_device_unregister(bldev); |
| 586 | err2: |
| 587 | cancel_delayed_work_sync(&td->esd_work); |
| 588 | destroy_workqueue(td->esd_wq); |
| 589 | err1: |
| 590 | kfree(td); |
| 591 | err0: |
| 592 | return r; |
| 593 | } |
| 594 | |
| 595 | static void taal_remove(struct omap_dss_device *dssdev) |
| 596 | { |
| 597 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 598 | struct backlight_device *bldev; |
| 599 | |
| 600 | dev_dbg(&dssdev->dev, "remove\n"); |
| 601 | |
| 602 | sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group); |
| 603 | |
| 604 | if (td->use_ext_te) { |
| 605 | int gpio = dssdev->phy.dsi.ext_te_gpio; |
| 606 | free_irq(gpio_to_irq(gpio), dssdev); |
| 607 | gpio_free(gpio); |
| 608 | } |
| 609 | |
| 610 | bldev = td->bldev; |
| 611 | bldev->props.power = FB_BLANK_POWERDOWN; |
| 612 | taal_bl_update_status(bldev); |
| 613 | backlight_device_unregister(bldev); |
| 614 | |
| 615 | cancel_delayed_work_sync(&td->esd_work); |
| 616 | destroy_workqueue(td->esd_wq); |
| 617 | |
| 618 | kfree(td); |
| 619 | } |
| 620 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 621 | static int taal_power_on(struct omap_dss_device *dssdev) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 622 | { |
| 623 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 624 | u8 id1, id2, id3; |
| 625 | int r; |
| 626 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 627 | if (dssdev->platform_enable) { |
| 628 | r = dssdev->platform_enable(dssdev); |
| 629 | if (r) |
| 630 | return r; |
| 631 | } |
| 632 | |
| 633 | /* it seems we have to wait a bit until taal is ready */ |
| 634 | msleep(5); |
| 635 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 636 | dsi_bus_lock(); |
| 637 | |
| 638 | r = omapdss_dsi_display_enable(dssdev); |
| 639 | if (r) { |
| 640 | dev_err(&dssdev->dev, "failed to enable DSI\n"); |
| 641 | goto err0; |
| 642 | } |
| 643 | |
| 644 | omapdss_dsi_vc_enable_hs(TCH, false); |
| 645 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 646 | r = taal_sleep_out(td); |
| 647 | if (r) |
| 648 | goto err; |
| 649 | |
| 650 | r = taal_get_id(&id1, &id2, &id3); |
| 651 | if (r) |
| 652 | goto err; |
| 653 | |
| 654 | /* on early revisions CABC is broken */ |
| 655 | if (id2 == 0x00 || id2 == 0xff || id2 == 0x81) |
| 656 | td->cabc_broken = true; |
| 657 | |
| 658 | taal_dcs_write_1(DCS_BRIGHTNESS, 0xff); |
| 659 | taal_dcs_write_1(DCS_CTRL_DISPLAY, (1<<2) | (1<<5)); /* BL | BCTRL */ |
| 660 | |
| 661 | taal_dcs_write_1(DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */ |
| 662 | |
| 663 | taal_set_addr_mode(td->rotate, td->mirror); |
| 664 | if (!td->cabc_broken) |
| 665 | taal_dcs_write_1(DCS_WRITE_CABC, td->cabc_mode); |
| 666 | |
| 667 | taal_dcs_write_0(DCS_DISPLAY_ON); |
| 668 | |
| 669 | #ifdef TAAL_USE_ESD_CHECK |
| 670 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
| 671 | #endif |
| 672 | |
| 673 | td->enabled = 1; |
| 674 | |
| 675 | if (!td->intro_printed) { |
| 676 | dev_info(&dssdev->dev, "revision %02x.%02x.%02x\n", |
| 677 | id1, id2, id3); |
| 678 | if (td->cabc_broken) |
| 679 | dev_info(&dssdev->dev, |
| 680 | "old Taal version, CABC disabled\n"); |
| 681 | td->intro_printed = true; |
| 682 | } |
| 683 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 684 | omapdss_dsi_vc_enable_hs(TCH, true); |
| 685 | |
| 686 | dsi_bus_unlock(); |
| 687 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 688 | return 0; |
| 689 | err: |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 690 | dsi_bus_unlock(); |
| 691 | |
| 692 | omapdss_dsi_display_disable(dssdev); |
| 693 | err0: |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 694 | if (dssdev->platform_disable) |
| 695 | dssdev->platform_disable(dssdev); |
| 696 | |
| 697 | return r; |
| 698 | } |
| 699 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 700 | static void taal_power_off(struct omap_dss_device *dssdev) |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 701 | { |
| 702 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 703 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 704 | dsi_bus_lock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 705 | |
| 706 | cancel_delayed_work(&td->esd_work); |
| 707 | |
| 708 | taal_dcs_write_0(DCS_DISPLAY_OFF); |
| 709 | taal_sleep_in(td); |
| 710 | |
| 711 | /* wait a bit so that the message goes through */ |
| 712 | msleep(10); |
| 713 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 714 | omapdss_dsi_display_disable(dssdev); |
| 715 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 716 | if (dssdev->platform_disable) |
| 717 | dssdev->platform_disable(dssdev); |
| 718 | |
| 719 | td->enabled = 0; |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 720 | |
| 721 | dsi_bus_unlock(); |
| 722 | } |
| 723 | |
| 724 | static int taal_enable(struct omap_dss_device *dssdev) |
| 725 | { |
| 726 | int r; |
| 727 | dev_dbg(&dssdev->dev, "enable\n"); |
| 728 | |
| 729 | if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) |
| 730 | return -EINVAL; |
| 731 | |
| 732 | r = taal_power_on(dssdev); |
| 733 | if (r) |
| 734 | return r; |
| 735 | |
| 736 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
| 737 | |
| 738 | return r; |
| 739 | } |
| 740 | |
| 741 | static void taal_disable(struct omap_dss_device *dssdev) |
| 742 | { |
| 743 | dev_dbg(&dssdev->dev, "disable\n"); |
| 744 | |
| 745 | if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) |
| 746 | taal_power_off(dssdev); |
| 747 | |
| 748 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 749 | } |
| 750 | |
| 751 | static int taal_suspend(struct omap_dss_device *dssdev) |
| 752 | { |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 753 | dev_dbg(&dssdev->dev, "suspend\n"); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 754 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 755 | if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) |
| 756 | return -EINVAL; |
| 757 | |
| 758 | taal_power_off(dssdev); |
| 759 | dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 760 | |
| 761 | return 0; |
| 762 | } |
| 763 | |
| 764 | static int taal_resume(struct omap_dss_device *dssdev) |
| 765 | { |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 766 | int r; |
| 767 | dev_dbg(&dssdev->dev, "resume\n"); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 768 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 769 | if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) |
| 770 | return -EINVAL; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 771 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 772 | r = taal_power_on(dssdev); |
| 773 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
| 774 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 775 | } |
| 776 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 777 | static void taal_framedone_cb(int err, void *data) |
| 778 | { |
| 779 | struct omap_dss_device *dssdev = data; |
| 780 | dev_dbg(&dssdev->dev, "framedone, err %d\n", err); |
| 781 | dsi_bus_unlock(); |
| 782 | } |
| 783 | |
| 784 | static int taal_update(struct omap_dss_device *dssdev, |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 785 | u16 x, u16 y, u16 w, u16 h) |
| 786 | { |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 787 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 788 | int r; |
| 789 | |
| 790 | dev_dbg(&dssdev->dev, "update %d, %d, %d x %d\n", x, y, w, h); |
| 791 | |
| 792 | dsi_bus_lock(); |
| 793 | |
| 794 | if (!td->enabled) { |
| 795 | r = 0; |
| 796 | goto err; |
| 797 | } |
| 798 | |
| 799 | r = omap_dsi_prepare_update(dssdev, &x, &y, &w, &h); |
| 800 | if (r) |
| 801 | goto err; |
| 802 | |
| 803 | r = taal_set_update_window(x, y, w, h); |
| 804 | if (r) |
| 805 | goto err; |
| 806 | |
| 807 | r = omap_dsi_update(dssdev, TCH, x, y, w, h, |
| 808 | taal_framedone_cb, dssdev); |
| 809 | if (r) |
| 810 | goto err; |
| 811 | |
| 812 | /* note: no bus_unlock here. unlock is in framedone_cb */ |
| 813 | return 0; |
| 814 | err: |
| 815 | dsi_bus_unlock(); |
| 816 | return r; |
| 817 | } |
| 818 | |
| 819 | static int taal_sync(struct omap_dss_device *dssdev) |
| 820 | { |
| 821 | dev_dbg(&dssdev->dev, "sync\n"); |
| 822 | |
| 823 | dsi_bus_lock(); |
| 824 | dsi_bus_unlock(); |
| 825 | |
| 826 | dev_dbg(&dssdev->dev, "sync done\n"); |
| 827 | |
| 828 | return 0; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 829 | } |
| 830 | |
| 831 | static int taal_enable_te(struct omap_dss_device *dssdev, bool enable) |
| 832 | { |
| 833 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 834 | int r; |
| 835 | |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 836 | dsi_bus_lock(); |
| 837 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 838 | td->te_enabled = enable; |
| 839 | |
| 840 | if (enable) |
| 841 | r = taal_dcs_write_1(DCS_TEAR_ON, 0); |
| 842 | else |
| 843 | r = taal_dcs_write_0(DCS_TEAR_OFF); |
| 844 | |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 845 | omapdss_dsi_enable_te(dssdev, enable); |
| 846 | |
| 847 | /* XXX for some reason, DSI TE breaks if we don't wait here. |
| 848 | * Panel bug? Needs more studying */ |
| 849 | msleep(100); |
| 850 | |
| 851 | dsi_bus_unlock(); |
| 852 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 853 | return r; |
| 854 | } |
| 855 | |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 856 | static int taal_get_te(struct omap_dss_device *dssdev) |
| 857 | { |
| 858 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 859 | return td->te_enabled; |
| 860 | } |
| 861 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 862 | static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate) |
| 863 | { |
| 864 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 865 | int r; |
| 866 | |
| 867 | dev_dbg(&dssdev->dev, "rotate %d\n", rotate); |
| 868 | |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 869 | dsi_bus_lock(); |
| 870 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 871 | if (td->enabled) { |
| 872 | r = taal_set_addr_mode(rotate, td->mirror); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 873 | if (r) |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 874 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | td->rotate = rotate; |
| 878 | |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 879 | dsi_bus_unlock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 880 | return 0; |
Tomi Valkeinen | 87424e1 | 2010-01-08 16:52:48 +0200 | [diff] [blame] | 881 | err: |
| 882 | dsi_bus_unlock(); |
| 883 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | static u8 taal_get_rotate(struct omap_dss_device *dssdev) |
| 887 | { |
| 888 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 889 | return td->rotate; |
| 890 | } |
| 891 | |
| 892 | static int taal_mirror(struct omap_dss_device *dssdev, bool enable) |
| 893 | { |
| 894 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 895 | int r; |
| 896 | |
| 897 | dev_dbg(&dssdev->dev, "mirror %d\n", enable); |
| 898 | |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 899 | dsi_bus_lock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 900 | if (td->enabled) { |
| 901 | r = taal_set_addr_mode(td->rotate, enable); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 902 | if (r) |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 903 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 904 | } |
| 905 | |
| 906 | td->mirror = enable; |
| 907 | |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 908 | dsi_bus_unlock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 909 | return 0; |
Tomi Valkeinen | 8d8aa61 | 2010-01-08 16:30:33 +0200 | [diff] [blame] | 910 | err: |
| 911 | dsi_bus_unlock(); |
| 912 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 913 | } |
| 914 | |
| 915 | static bool taal_get_mirror(struct omap_dss_device *dssdev) |
| 916 | { |
| 917 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 918 | return td->mirror; |
| 919 | } |
| 920 | |
| 921 | static int taal_run_test(struct omap_dss_device *dssdev, int test_num) |
| 922 | { |
| 923 | u8 id1, id2, id3; |
| 924 | int r; |
| 925 | |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 926 | dsi_bus_lock(); |
| 927 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 928 | r = taal_dcs_read_1(DCS_GET_ID1, &id1); |
| 929 | if (r) |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 930 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 931 | r = taal_dcs_read_1(DCS_GET_ID2, &id2); |
| 932 | if (r) |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 933 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 934 | r = taal_dcs_read_1(DCS_GET_ID3, &id3); |
| 935 | if (r) |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 936 | goto err; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 937 | |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 938 | dsi_bus_unlock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 939 | return 0; |
Tomi Valkeinen | 1a75ef4 | 2010-01-08 16:21:28 +0200 | [diff] [blame] | 940 | err: |
| 941 | dsi_bus_unlock(); |
| 942 | return r; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 943 | } |
| 944 | |
| 945 | static int taal_memory_read(struct omap_dss_device *dssdev, |
| 946 | void *buf, size_t size, |
| 947 | u16 x, u16 y, u16 w, u16 h) |
| 948 | { |
| 949 | int r; |
| 950 | int first = 1; |
| 951 | int plen; |
| 952 | unsigned buf_used = 0; |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 953 | struct taal_data *td = dev_get_drvdata(&dssdev->dev); |
| 954 | |
| 955 | if (!td->enabled) |
| 956 | return -ENODEV; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 957 | |
| 958 | if (size < w * h * 3) |
| 959 | return -ENOMEM; |
| 960 | |
| 961 | size = min(w * h * 3, |
| 962 | dssdev->panel.timings.x_res * |
| 963 | dssdev->panel.timings.y_res * 3); |
| 964 | |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 965 | dsi_bus_lock(); |
| 966 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 967 | /* plen 1 or 2 goes into short packet. until checksum error is fixed, |
| 968 | * use short packets. plen 32 works, but bigger packets seem to cause |
| 969 | * an error. */ |
| 970 | if (size % 2) |
| 971 | plen = 1; |
| 972 | else |
| 973 | plen = 2; |
| 974 | |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 975 | taal_set_update_window(x, y, w, h); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 976 | |
| 977 | r = dsi_vc_set_max_rx_packet_size(TCH, plen); |
| 978 | if (r) |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 979 | goto err0; |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 980 | |
| 981 | while (buf_used < size) { |
| 982 | u8 dcs_cmd = first ? 0x2e : 0x3e; |
| 983 | first = 0; |
| 984 | |
| 985 | r = dsi_vc_dcs_read(TCH, dcs_cmd, |
| 986 | buf + buf_used, size - buf_used); |
| 987 | |
| 988 | if (r < 0) { |
| 989 | dev_err(&dssdev->dev, "read error\n"); |
| 990 | goto err; |
| 991 | } |
| 992 | |
| 993 | buf_used += r; |
| 994 | |
| 995 | if (r < plen) { |
| 996 | dev_err(&dssdev->dev, "short read\n"); |
| 997 | break; |
| 998 | } |
| 999 | |
| 1000 | if (signal_pending(current)) { |
| 1001 | dev_err(&dssdev->dev, "signal pending, " |
| 1002 | "aborting memory read\n"); |
| 1003 | r = -ERESTARTSYS; |
| 1004 | goto err; |
| 1005 | } |
| 1006 | } |
| 1007 | |
| 1008 | r = buf_used; |
| 1009 | |
| 1010 | err: |
| 1011 | dsi_vc_set_max_rx_packet_size(TCH, 1); |
Tomi Valkeinen | c75d946 | 2010-01-08 16:56:44 +0200 | [diff] [blame] | 1012 | err0: |
| 1013 | dsi_bus_unlock(); |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1014 | return r; |
| 1015 | } |
| 1016 | |
| 1017 | static void taal_esd_work(struct work_struct *work) |
| 1018 | { |
| 1019 | struct taal_data *td = container_of(work, struct taal_data, |
| 1020 | esd_work.work); |
| 1021 | struct omap_dss_device *dssdev = td->dssdev; |
| 1022 | u8 state1, state2; |
| 1023 | int r; |
| 1024 | |
| 1025 | if (!td->enabled) |
| 1026 | return; |
| 1027 | |
| 1028 | dsi_bus_lock(); |
| 1029 | |
| 1030 | r = taal_dcs_read_1(DCS_RDDSDR, &state1); |
| 1031 | if (r) { |
| 1032 | dev_err(&dssdev->dev, "failed to read Taal status\n"); |
| 1033 | goto err; |
| 1034 | } |
| 1035 | |
| 1036 | /* Run self diagnostics */ |
| 1037 | r = taal_sleep_out(td); |
| 1038 | if (r) { |
| 1039 | dev_err(&dssdev->dev, "failed to run Taal self-diagnostics\n"); |
| 1040 | goto err; |
| 1041 | } |
| 1042 | |
| 1043 | r = taal_dcs_read_1(DCS_RDDSDR, &state2); |
| 1044 | if (r) { |
| 1045 | dev_err(&dssdev->dev, "failed to read Taal status\n"); |
| 1046 | goto err; |
| 1047 | } |
| 1048 | |
| 1049 | /* Each sleep out command will trigger a self diagnostic and flip |
| 1050 | * Bit6 if the test passes. |
| 1051 | */ |
| 1052 | if (!((state1 ^ state2) & (1 << 6))) { |
| 1053 | dev_err(&dssdev->dev, "LCD self diagnostics failed\n"); |
| 1054 | goto err; |
| 1055 | } |
| 1056 | /* Self-diagnostics result is also shown on TE GPIO line. We need |
| 1057 | * to re-enable TE after self diagnostics */ |
Tomi Valkeinen | 1189b7f | 2010-03-01 13:52:10 +0200 | [diff] [blame^] | 1058 | if (td->use_ext_te && td->te_enabled) { |
| 1059 | r = taal_dcs_write_1(DCS_TEAR_ON, 0); |
| 1060 | if (r) |
| 1061 | goto err; |
| 1062 | } |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1063 | |
| 1064 | dsi_bus_unlock(); |
| 1065 | |
| 1066 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
| 1067 | |
| 1068 | return; |
| 1069 | err: |
| 1070 | dev_err(&dssdev->dev, "performing LCD reset\n"); |
| 1071 | |
| 1072 | taal_disable(dssdev); |
| 1073 | taal_enable(dssdev); |
| 1074 | |
| 1075 | dsi_bus_unlock(); |
| 1076 | |
| 1077 | queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD); |
| 1078 | } |
| 1079 | |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 1080 | static int taal_set_update_mode(struct omap_dss_device *dssdev, |
| 1081 | enum omap_dss_update_mode mode) |
| 1082 | { |
| 1083 | if (mode != OMAP_DSS_UPDATE_MANUAL) |
| 1084 | return -EINVAL; |
| 1085 | return 0; |
| 1086 | } |
| 1087 | |
| 1088 | static enum omap_dss_update_mode taal_get_update_mode( |
| 1089 | struct omap_dss_device *dssdev) |
| 1090 | { |
| 1091 | return OMAP_DSS_UPDATE_MANUAL; |
| 1092 | } |
| 1093 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1094 | static struct omap_dss_driver taal_driver = { |
| 1095 | .probe = taal_probe, |
| 1096 | .remove = taal_remove, |
| 1097 | |
| 1098 | .enable = taal_enable, |
| 1099 | .disable = taal_disable, |
| 1100 | .suspend = taal_suspend, |
| 1101 | .resume = taal_resume, |
| 1102 | |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 1103 | .set_update_mode = taal_set_update_mode, |
| 1104 | .get_update_mode = taal_get_update_mode, |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 1105 | |
| 1106 | .update = taal_update, |
| 1107 | .sync = taal_sync, |
| 1108 | |
Tomi Valkeinen | 96adcec | 2010-01-11 13:54:33 +0200 | [diff] [blame] | 1109 | .get_resolution = taal_get_resolution, |
Tomi Valkeinen | a269950 | 2010-01-11 14:33:40 +0200 | [diff] [blame] | 1110 | .get_recommended_bpp = omapdss_default_get_recommended_bpp, |
| 1111 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1112 | .enable_te = taal_enable_te, |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1113 | .get_te = taal_get_te, |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 1114 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1115 | .set_rotate = taal_rotate, |
| 1116 | .get_rotate = taal_get_rotate, |
| 1117 | .set_mirror = taal_mirror, |
| 1118 | .get_mirror = taal_get_mirror, |
| 1119 | .run_test = taal_run_test, |
| 1120 | .memory_read = taal_memory_read, |
| 1121 | |
Tomi Valkeinen | 69b2048 | 2010-01-20 12:11:25 +0200 | [diff] [blame] | 1122 | .get_timings = taal_get_timings, |
| 1123 | |
Tomi Valkeinen | f133a9d | 2009-10-28 11:31:05 +0200 | [diff] [blame] | 1124 | .driver = { |
| 1125 | .name = "taal", |
| 1126 | .owner = THIS_MODULE, |
| 1127 | }, |
| 1128 | }; |
| 1129 | |
| 1130 | static int __init taal_init(void) |
| 1131 | { |
| 1132 | omap_dss_register_driver(&taal_driver); |
| 1133 | |
| 1134 | return 0; |
| 1135 | } |
| 1136 | |
| 1137 | static void __exit taal_exit(void) |
| 1138 | { |
| 1139 | omap_dss_unregister_driver(&taal_driver); |
| 1140 | } |
| 1141 | |
| 1142 | module_init(taal_init); |
| 1143 | module_exit(taal_exit); |
| 1144 | |
| 1145 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); |
| 1146 | MODULE_DESCRIPTION("Taal Driver"); |
| 1147 | MODULE_LICENSE("GPL"); |