1/* 2 * linux/drivers/video/omap2/dss/venc.c 3 * 4 * Copyright (C) 2009 Nokia Corporation 5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> 6 * 7 * VENC settings from TI's DSS driver 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License version 2 as published by 11 * the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but WITHOUT 14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 16 * more details. 17 * 18 * You should have received a copy of the GNU General Public License along with 19 * this program. If not, see <http://www.gnu.org/licenses/>. 20 */ 21 22#define DSS_SUBSYS_NAME "VENC" 23 24#include <linux/kernel.h> 25#include <linux/module.h> 26#include <linux/clk.h> 27#include <linux/err.h> 28#include <linux/io.h> 29#include <linux/mutex.h> 30#include <linux/completion.h> 31#include <linux/delay.h> 32#include <linux/string.h> 33#include <linux/seq_file.h> 34#include <linux/platform_device.h> 35#include <linux/regulator/consumer.h> 36#include <linux/pm_runtime.h> 37#include <linux/of.h> 38#include <linux/component.h> 39 40#include <video/omapdss.h> 41 42#include "dss.h" 43#include "dss_features.h" 44 45/* Venc registers */ 46#define VENC_REV_ID 0x00 47#define VENC_STATUS 0x04 48#define VENC_F_CONTROL 0x08 49#define VENC_VIDOUT_CTRL 0x10 50#define VENC_SYNC_CTRL 0x14 51#define VENC_LLEN 0x1C 52#define VENC_FLENS 0x20 53#define VENC_HFLTR_CTRL 0x24 54#define VENC_CC_CARR_WSS_CARR 0x28 55#define VENC_C_PHASE 0x2C 56#define VENC_GAIN_U 0x30 57#define VENC_GAIN_V 0x34 58#define VENC_GAIN_Y 0x38 59#define VENC_BLACK_LEVEL 0x3C 60#define VENC_BLANK_LEVEL 0x40 61#define VENC_X_COLOR 0x44 62#define VENC_M_CONTROL 0x48 63#define VENC_BSTAMP_WSS_DATA 0x4C 64#define VENC_S_CARR 0x50 65#define VENC_LINE21 0x54 66#define VENC_LN_SEL 0x58 67#define VENC_L21__WC_CTL 0x5C 68#define VENC_HTRIGGER_VTRIGGER 0x60 69#define VENC_SAVID__EAVID 0x64 70#define VENC_FLEN__FAL 0x68 71#define VENC_LAL__PHASE_RESET 0x6C 72#define VENC_HS_INT_START_STOP_X 0x70 73#define VENC_HS_EXT_START_STOP_X 0x74 74#define VENC_VS_INT_START_X 0x78 75#define VENC_VS_INT_STOP_X__VS_INT_START_Y 0x7C 76#define VENC_VS_INT_STOP_Y__VS_EXT_START_X 0x80 77#define VENC_VS_EXT_STOP_X__VS_EXT_START_Y 0x84 78#define VENC_VS_EXT_STOP_Y 0x88 79#define VENC_AVID_START_STOP_X 0x90 80#define VENC_AVID_START_STOP_Y 0x94 81#define VENC_FID_INT_START_X__FID_INT_START_Y 0xA0 82#define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X 0xA4 83#define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y 0xA8 84#define VENC_TVDETGP_INT_START_STOP_X 0xB0 85#define VENC_TVDETGP_INT_START_STOP_Y 0xB4 86#define VENC_GEN_CTRL 0xB8 87#define VENC_OUTPUT_CONTROL 0xC4 88#define VENC_OUTPUT_TEST 0xC8 89#define VENC_DAC_B__DAC_C 0xC8 90 91struct venc_config { 92 u32 f_control; 93 u32 vidout_ctrl; 94 u32 sync_ctrl; 95 u32 llen; 96 u32 flens; 97 u32 hfltr_ctrl; 98 u32 cc_carr_wss_carr; 99 u32 c_phase; 100 u32 gain_u; 101 u32 gain_v; 102 u32 gain_y; 103 u32 black_level; 104 u32 blank_level; 105 u32 x_color; 106 u32 m_control; 107 u32 bstamp_wss_data; 108 u32 s_carr; 109 u32 line21; 110 u32 ln_sel; 111 u32 l21__wc_ctl; 112 u32 htrigger_vtrigger; 113 u32 savid__eavid; 114 u32 flen__fal; 115 u32 lal__phase_reset; 116 u32 hs_int_start_stop_x; 117 u32 hs_ext_start_stop_x; 118 u32 vs_int_start_x; 119 u32 vs_int_stop_x__vs_int_start_y; 120 u32 vs_int_stop_y__vs_ext_start_x; 121 u32 vs_ext_stop_x__vs_ext_start_y; 122 u32 vs_ext_stop_y; 123 u32 avid_start_stop_x; 124 u32 avid_start_stop_y; 125 u32 fid_int_start_x__fid_int_start_y; 126 u32 fid_int_offset_y__fid_ext_start_x; 127 u32 fid_ext_start_y__fid_ext_offset_y; 128 u32 tvdetgp_int_start_stop_x; 129 u32 tvdetgp_int_start_stop_y; 130 u32 gen_ctrl; 131}; 132 133/* from TRM */ 134static const struct venc_config venc_config_pal_trm = { 135 .f_control = 0, 136 .vidout_ctrl = 1, 137 .sync_ctrl = 0x40, 138 .llen = 0x35F, /* 863 */ 139 .flens = 0x270, /* 624 */ 140 .hfltr_ctrl = 0, 141 .cc_carr_wss_carr = 0x2F7225ED, 142 .c_phase = 0, 143 .gain_u = 0x111, 144 .gain_v = 0x181, 145 .gain_y = 0x140, 146 .black_level = 0x3B, 147 .blank_level = 0x3B, 148 .x_color = 0x7, 149 .m_control = 0x2, 150 .bstamp_wss_data = 0x3F, 151 .s_carr = 0x2A098ACB, 152 .line21 = 0, 153 .ln_sel = 0x01290015, 154 .l21__wc_ctl = 0x0000F603, 155 .htrigger_vtrigger = 0, 156 157 .savid__eavid = 0x06A70108, 158 .flen__fal = 0x00180270, 159 .lal__phase_reset = 0x00040135, 160 .hs_int_start_stop_x = 0x00880358, 161 .hs_ext_start_stop_x = 0x000F035F, 162 .vs_int_start_x = 0x01A70000, 163 .vs_int_stop_x__vs_int_start_y = 0x000001A7, 164 .vs_int_stop_y__vs_ext_start_x = 0x01AF0000, 165 .vs_ext_stop_x__vs_ext_start_y = 0x000101AF, 166 .vs_ext_stop_y = 0x00000025, 167 .avid_start_stop_x = 0x03530083, 168 .avid_start_stop_y = 0x026C002E, 169 .fid_int_start_x__fid_int_start_y = 0x0001008A, 170 .fid_int_offset_y__fid_ext_start_x = 0x002E0138, 171 .fid_ext_start_y__fid_ext_offset_y = 0x01380001, 172 173 .tvdetgp_int_start_stop_x = 0x00140001, 174 .tvdetgp_int_start_stop_y = 0x00010001, 175 .gen_ctrl = 0x00FF0000, 176}; 177 178/* from TRM */ 179static const struct venc_config venc_config_ntsc_trm = { 180 .f_control = 0, 181 .vidout_ctrl = 1, 182 .sync_ctrl = 0x8040, 183 .llen = 0x359, 184 .flens = 0x20C, 185 .hfltr_ctrl = 0, 186 .cc_carr_wss_carr = 0x043F2631, 187 .c_phase = 0, 188 .gain_u = 0x102, 189 .gain_v = 0x16C, 190 .gain_y = 0x12F, 191 .black_level = 0x43, 192 .blank_level = 0x38, 193 .x_color = 0x7, 194 .m_control = 0x1, 195 .bstamp_wss_data = 0x38, 196 .s_carr = 0x21F07C1F, 197 .line21 = 0, 198 .ln_sel = 0x01310011, 199 .l21__wc_ctl = 0x0000F003, 200 .htrigger_vtrigger = 0, 201 202 .savid__eavid = 0x069300F4, 203 .flen__fal = 0x0016020C, 204 .lal__phase_reset = 0x00060107, 205 .hs_int_start_stop_x = 0x008E0350, 206 .hs_ext_start_stop_x = 0x000F0359, 207 .vs_int_start_x = 0x01A00000, 208 .vs_int_stop_x__vs_int_start_y = 0x020701A0, 209 .vs_int_stop_y__vs_ext_start_x = 0x01AC0024, 210 .vs_ext_stop_x__vs_ext_start_y = 0x020D01AC, 211 .vs_ext_stop_y = 0x00000006, 212 .avid_start_stop_x = 0x03480078, 213 .avid_start_stop_y = 0x02060024, 214 .fid_int_start_x__fid_int_start_y = 0x0001008A, 215 .fid_int_offset_y__fid_ext_start_x = 0x01AC0106, 216 .fid_ext_start_y__fid_ext_offset_y = 0x01060006, 217 218 .tvdetgp_int_start_stop_x = 0x00140001, 219 .tvdetgp_int_start_stop_y = 0x00010001, 220 .gen_ctrl = 0x00F90000, 221}; 222 223static const struct venc_config venc_config_pal_bdghi = { 224 .f_control = 0, 225 .vidout_ctrl = 0, 226 .sync_ctrl = 0, 227 .hfltr_ctrl = 0, 228 .x_color = 0, 229 .line21 = 0, 230 .ln_sel = 21, 231 .htrigger_vtrigger = 0, 232 .tvdetgp_int_start_stop_x = 0x00140001, 233 .tvdetgp_int_start_stop_y = 0x00010001, 234 .gen_ctrl = 0x00FB0000, 235 236 .llen = 864-1, 237 .flens = 625-1, 238 .cc_carr_wss_carr = 0x2F7625ED, 239 .c_phase = 0xDF, 240 .gain_u = 0x111, 241 .gain_v = 0x181, 242 .gain_y = 0x140, 243 .black_level = 0x3e, 244 .blank_level = 0x3e, 245 .m_control = 0<<2 | 1<<1, 246 .bstamp_wss_data = 0x42, 247 .s_carr = 0x2a098acb, 248 .l21__wc_ctl = 0<<13 | 0x16<<8 | 0<<0, 249 .savid__eavid = 0x06A70108, 250 .flen__fal = 23<<16 | 624<<0, 251 .lal__phase_reset = 2<<17 | 310<<0, 252 .hs_int_start_stop_x = 0x00920358, 253 .hs_ext_start_stop_x = 0x000F035F, 254 .vs_int_start_x = 0x1a7<<16, 255 .vs_int_stop_x__vs_int_start_y = 0x000601A7, 256 .vs_int_stop_y__vs_ext_start_x = 0x01AF0036, 257 .vs_ext_stop_x__vs_ext_start_y = 0x27101af, 258 .vs_ext_stop_y = 0x05, 259 .avid_start_stop_x = 0x03530082, 260 .avid_start_stop_y = 0x0270002E, 261 .fid_int_start_x__fid_int_start_y = 0x0005008A, 262 .fid_int_offset_y__fid_ext_start_x = 0x002E0138, 263 .fid_ext_start_y__fid_ext_offset_y = 0x01380005, 264}; 265 266const struct omap_video_timings omap_dss_pal_timings = { 267 .x_res = 720, 268 .y_res = 574, 269 .pixelclock = 13500000, 270 .hsw = 64, 271 .hfp = 12, 272 .hbp = 68, 273 .vsw = 5, 274 .vfp = 5, 275 .vbp = 41, 276 277 .interlace = true, 278 279 .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, 280 .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, 281 .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, 282 .de_level = OMAPDSS_SIG_ACTIVE_HIGH, 283 .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, 284}; 285EXPORT_SYMBOL(omap_dss_pal_timings); 286 287const struct omap_video_timings omap_dss_ntsc_timings = { 288 .x_res = 720, 289 .y_res = 482, 290 .pixelclock = 13500000, 291 .hsw = 64, 292 .hfp = 16, 293 .hbp = 58, 294 .vsw = 6, 295 .vfp = 6, 296 .vbp = 31, 297 298 .interlace = true, 299 300 .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, 301 .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, 302 .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, 303 .de_level = OMAPDSS_SIG_ACTIVE_HIGH, 304 .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, 305}; 306EXPORT_SYMBOL(omap_dss_ntsc_timings); 307 308static struct { 309 struct platform_device *pdev; 310 void __iomem *base; 311 struct mutex venc_lock; 312 u32 wss_data; 313 struct regulator *vdda_dac_reg; 314 315 struct clk *tv_dac_clk; 316 317 struct omap_video_timings timings; 318 enum omap_dss_venc_type type; 319 bool invert_polarity; 320 321 struct omap_dss_device output; 322} venc; 323 324static inline void venc_write_reg(int idx, u32 val) 325{ 326 __raw_writel(val, venc.base + idx); 327} 328 329static inline u32 venc_read_reg(int idx) 330{ 331 u32 l = __raw_readl(venc.base + idx); 332 return l; 333} 334 335static void venc_write_config(const struct venc_config *config) 336{ 337 DSSDBG("write venc conf\n"); 338 339 venc_write_reg(VENC_LLEN, config->llen); 340 venc_write_reg(VENC_FLENS, config->flens); 341 venc_write_reg(VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr); 342 venc_write_reg(VENC_C_PHASE, config->c_phase); 343 venc_write_reg(VENC_GAIN_U, config->gain_u); 344 venc_write_reg(VENC_GAIN_V, config->gain_v); 345 venc_write_reg(VENC_GAIN_Y, config->gain_y); 346 venc_write_reg(VENC_BLACK_LEVEL, config->black_level); 347 venc_write_reg(VENC_BLANK_LEVEL, config->blank_level); 348 venc_write_reg(VENC_M_CONTROL, config->m_control); 349 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data | 350 venc.wss_data); 351 venc_write_reg(VENC_S_CARR, config->s_carr); 352 venc_write_reg(VENC_L21__WC_CTL, config->l21__wc_ctl); 353 venc_write_reg(VENC_SAVID__EAVID, config->savid__eavid); 354 venc_write_reg(VENC_FLEN__FAL, config->flen__fal); 355 venc_write_reg(VENC_LAL__PHASE_RESET, config->lal__phase_reset); 356 venc_write_reg(VENC_HS_INT_START_STOP_X, config->hs_int_start_stop_x); 357 venc_write_reg(VENC_HS_EXT_START_STOP_X, config->hs_ext_start_stop_x); 358 venc_write_reg(VENC_VS_INT_START_X, config->vs_int_start_x); 359 venc_write_reg(VENC_VS_INT_STOP_X__VS_INT_START_Y, 360 config->vs_int_stop_x__vs_int_start_y); 361 venc_write_reg(VENC_VS_INT_STOP_Y__VS_EXT_START_X, 362 config->vs_int_stop_y__vs_ext_start_x); 363 venc_write_reg(VENC_VS_EXT_STOP_X__VS_EXT_START_Y, 364 config->vs_ext_stop_x__vs_ext_start_y); 365 venc_write_reg(VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y); 366 venc_write_reg(VENC_AVID_START_STOP_X, config->avid_start_stop_x); 367 venc_write_reg(VENC_AVID_START_STOP_Y, config->avid_start_stop_y); 368 venc_write_reg(VENC_FID_INT_START_X__FID_INT_START_Y, 369 config->fid_int_start_x__fid_int_start_y); 370 venc_write_reg(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X, 371 config->fid_int_offset_y__fid_ext_start_x); 372 venc_write_reg(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y, 373 config->fid_ext_start_y__fid_ext_offset_y); 374 375 venc_write_reg(VENC_DAC_B__DAC_C, venc_read_reg(VENC_DAC_B__DAC_C)); 376 venc_write_reg(VENC_VIDOUT_CTRL, config->vidout_ctrl); 377 venc_write_reg(VENC_HFLTR_CTRL, config->hfltr_ctrl); 378 venc_write_reg(VENC_X_COLOR, config->x_color); 379 venc_write_reg(VENC_LINE21, config->line21); 380 venc_write_reg(VENC_LN_SEL, config->ln_sel); 381 venc_write_reg(VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger); 382 venc_write_reg(VENC_TVDETGP_INT_START_STOP_X, 383 config->tvdetgp_int_start_stop_x); 384 venc_write_reg(VENC_TVDETGP_INT_START_STOP_Y, 385 config->tvdetgp_int_start_stop_y); 386 venc_write_reg(VENC_GEN_CTRL, config->gen_ctrl); 387 venc_write_reg(VENC_F_CONTROL, config->f_control); 388 venc_write_reg(VENC_SYNC_CTRL, config->sync_ctrl); 389} 390 391static void venc_reset(void) 392{ 393 int t = 1000; 394 395 venc_write_reg(VENC_F_CONTROL, 1<<8); 396 while (venc_read_reg(VENC_F_CONTROL) & (1<<8)) { 397 if (--t == 0) { 398 DSSERR("Failed to reset venc\n"); 399 return; 400 } 401 } 402 403#ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET 404 /* the magical sleep that makes things work */ 405 /* XXX more info? What bug this circumvents? */ 406 msleep(20); 407#endif 408} 409 410static int venc_runtime_get(void) 411{ 412 int r; 413 414 DSSDBG("venc_runtime_get\n"); 415 416 r = pm_runtime_get_sync(&venc.pdev->dev); 417 WARN_ON(r < 0); 418 return r < 0 ? r : 0; 419} 420 421static void venc_runtime_put(void) 422{ 423 int r; 424 425 DSSDBG("venc_runtime_put\n"); 426 427 r = pm_runtime_put_sync(&venc.pdev->dev); 428 WARN_ON(r < 0 && r != -ENOSYS); 429} 430 431static const struct venc_config *venc_timings_to_config( 432 struct omap_video_timings *timings) 433{ 434 if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0) 435 return &venc_config_pal_trm; 436 437 if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0) 438 return &venc_config_ntsc_trm; 439 440 BUG(); 441 return NULL; 442} 443 444static int venc_power_on(struct omap_dss_device *dssdev) 445{ 446 struct omap_overlay_manager *mgr = venc.output.manager; 447 u32 l; 448 int r; 449 450 r = venc_runtime_get(); 451 if (r) 452 goto err0; 453 454 venc_reset(); 455 venc_write_config(venc_timings_to_config(&venc.timings)); 456 457 dss_set_venc_output(venc.type); 458 dss_set_dac_pwrdn_bgz(1); 459 460 l = 0; 461 462 if (venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE) 463 l |= 1 << 1; 464 else /* S-Video */ 465 l |= (1 << 0) | (1 << 2); 466 467 if (venc.invert_polarity == false) 468 l |= 1 << 3; 469 470 venc_write_reg(VENC_OUTPUT_CONTROL, l); 471 472 dss_mgr_set_timings(mgr, &venc.timings); 473 474 r = regulator_enable(venc.vdda_dac_reg); 475 if (r) 476 goto err1; 477 478 r = dss_mgr_enable(mgr); 479 if (r) 480 goto err2; 481 482 return 0; 483 484err2: 485 regulator_disable(venc.vdda_dac_reg); 486err1: 487 venc_write_reg(VENC_OUTPUT_CONTROL, 0); 488 dss_set_dac_pwrdn_bgz(0); 489 490 venc_runtime_put(); 491err0: 492 return r; 493} 494 495static void venc_power_off(struct omap_dss_device *dssdev) 496{ 497 struct omap_overlay_manager *mgr = venc.output.manager; 498 499 venc_write_reg(VENC_OUTPUT_CONTROL, 0); 500 dss_set_dac_pwrdn_bgz(0); 501 502 dss_mgr_disable(mgr); 503 504 regulator_disable(venc.vdda_dac_reg); 505 506 venc_runtime_put(); 507} 508 509static int venc_display_enable(struct omap_dss_device *dssdev) 510{ 511 struct omap_dss_device *out = &venc.output; 512 int r; 513 514 DSSDBG("venc_display_enable\n"); 515 516 mutex_lock(&venc.venc_lock); 517 518 if (out == NULL || out->manager == NULL) { 519 DSSERR("Failed to enable display: no output/manager\n"); 520 r = -ENODEV; 521 goto err0; 522 } 523 524 r = venc_power_on(dssdev); 525 if (r) 526 goto err0; 527 528 venc.wss_data = 0; 529 530 mutex_unlock(&venc.venc_lock); 531 532 return 0; 533err0: 534 mutex_unlock(&venc.venc_lock); 535 return r; 536} 537 538static void venc_display_disable(struct omap_dss_device *dssdev) 539{ 540 DSSDBG("venc_display_disable\n"); 541 542 mutex_lock(&venc.venc_lock); 543 544 venc_power_off(dssdev); 545 546 mutex_unlock(&venc.venc_lock); 547} 548 549static void venc_set_timings(struct omap_dss_device *dssdev, 550 struct omap_video_timings *timings) 551{ 552 DSSDBG("venc_set_timings\n"); 553 554 mutex_lock(&venc.venc_lock); 555 556 /* Reset WSS data when the TV standard changes. */ 557 if (memcmp(&venc.timings, timings, sizeof(*timings))) 558 venc.wss_data = 0; 559 560 venc.timings = *timings; 561 562 dispc_set_tv_pclk(13500000); 563 564 mutex_unlock(&venc.venc_lock); 565} 566 567static int venc_check_timings(struct omap_dss_device *dssdev, 568 struct omap_video_timings *timings) 569{ 570 DSSDBG("venc_check_timings\n"); 571 572 if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0) 573 return 0; 574 575 if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0) 576 return 0; 577 578 return -EINVAL; 579} 580 581static void venc_get_timings(struct omap_dss_device *dssdev, 582 struct omap_video_timings *timings) 583{ 584 mutex_lock(&venc.venc_lock); 585 586 *timings = venc.timings; 587 588 mutex_unlock(&venc.venc_lock); 589} 590 591static u32 venc_get_wss(struct omap_dss_device *dssdev) 592{ 593 /* Invert due to VENC_L21_WC_CTL:INV=1 */ 594 return (venc.wss_data >> 8) ^ 0xfffff; 595} 596 597static int venc_set_wss(struct omap_dss_device *dssdev, u32 wss) 598{ 599 const struct venc_config *config; 600 int r; 601 602 DSSDBG("venc_set_wss\n"); 603 604 mutex_lock(&venc.venc_lock); 605 606 config = venc_timings_to_config(&venc.timings); 607 608 /* Invert due to VENC_L21_WC_CTL:INV=1 */ 609 venc.wss_data = (wss ^ 0xfffff) << 8; 610 611 r = venc_runtime_get(); 612 if (r) 613 goto err; 614 615 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data | 616 venc.wss_data); 617 618 venc_runtime_put(); 619 620err: 621 mutex_unlock(&venc.venc_lock); 622 623 return r; 624} 625 626static void venc_set_type(struct omap_dss_device *dssdev, 627 enum omap_dss_venc_type type) 628{ 629 mutex_lock(&venc.venc_lock); 630 631 venc.type = type; 632 633 mutex_unlock(&venc.venc_lock); 634} 635 636static void venc_invert_vid_out_polarity(struct omap_dss_device *dssdev, 637 bool invert_polarity) 638{ 639 mutex_lock(&venc.venc_lock); 640 641 venc.invert_polarity = invert_polarity; 642 643 mutex_unlock(&venc.venc_lock); 644} 645 646static int venc_init_regulator(void) 647{ 648 struct regulator *vdda_dac; 649 650 if (venc.vdda_dac_reg != NULL) 651 return 0; 652 653 if (venc.pdev->dev.of_node) 654 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda"); 655 else 656 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda_dac"); 657 658 if (IS_ERR(vdda_dac)) { 659 if (PTR_ERR(vdda_dac) != -EPROBE_DEFER) 660 DSSERR("can't get VDDA_DAC regulator\n"); 661 return PTR_ERR(vdda_dac); 662 } 663 664 venc.vdda_dac_reg = vdda_dac; 665 666 return 0; 667} 668 669static void venc_dump_regs(struct seq_file *s) 670{ 671#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(r)) 672 673 if (venc_runtime_get()) 674 return; 675 676 DUMPREG(VENC_F_CONTROL); 677 DUMPREG(VENC_VIDOUT_CTRL); 678 DUMPREG(VENC_SYNC_CTRL); 679 DUMPREG(VENC_LLEN); 680 DUMPREG(VENC_FLENS); 681 DUMPREG(VENC_HFLTR_CTRL); 682 DUMPREG(VENC_CC_CARR_WSS_CARR); 683 DUMPREG(VENC_C_PHASE); 684 DUMPREG(VENC_GAIN_U); 685 DUMPREG(VENC_GAIN_V); 686 DUMPREG(VENC_GAIN_Y); 687 DUMPREG(VENC_BLACK_LEVEL); 688 DUMPREG(VENC_BLANK_LEVEL); 689 DUMPREG(VENC_X_COLOR); 690 DUMPREG(VENC_M_CONTROL); 691 DUMPREG(VENC_BSTAMP_WSS_DATA); 692 DUMPREG(VENC_S_CARR); 693 DUMPREG(VENC_LINE21); 694 DUMPREG(VENC_LN_SEL); 695 DUMPREG(VENC_L21__WC_CTL); 696 DUMPREG(VENC_HTRIGGER_VTRIGGER); 697 DUMPREG(VENC_SAVID__EAVID); 698 DUMPREG(VENC_FLEN__FAL); 699 DUMPREG(VENC_LAL__PHASE_RESET); 700 DUMPREG(VENC_HS_INT_START_STOP_X); 701 DUMPREG(VENC_HS_EXT_START_STOP_X); 702 DUMPREG(VENC_VS_INT_START_X); 703 DUMPREG(VENC_VS_INT_STOP_X__VS_INT_START_Y); 704 DUMPREG(VENC_VS_INT_STOP_Y__VS_EXT_START_X); 705 DUMPREG(VENC_VS_EXT_STOP_X__VS_EXT_START_Y); 706 DUMPREG(VENC_VS_EXT_STOP_Y); 707 DUMPREG(VENC_AVID_START_STOP_X); 708 DUMPREG(VENC_AVID_START_STOP_Y); 709 DUMPREG(VENC_FID_INT_START_X__FID_INT_START_Y); 710 DUMPREG(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X); 711 DUMPREG(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y); 712 DUMPREG(VENC_TVDETGP_INT_START_STOP_X); 713 DUMPREG(VENC_TVDETGP_INT_START_STOP_Y); 714 DUMPREG(VENC_GEN_CTRL); 715 DUMPREG(VENC_OUTPUT_CONTROL); 716 DUMPREG(VENC_OUTPUT_TEST); 717 718 venc_runtime_put(); 719 720#undef DUMPREG 721} 722 723static int venc_get_clocks(struct platform_device *pdev) 724{ 725 struct clk *clk; 726 727 if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK)) { 728 clk = devm_clk_get(&pdev->dev, "tv_dac_clk"); 729 if (IS_ERR(clk)) { 730 DSSERR("can't get tv_dac_clk\n"); 731 return PTR_ERR(clk); 732 } 733 } else { 734 clk = NULL; 735 } 736 737 venc.tv_dac_clk = clk; 738 739 return 0; 740} 741 742static int venc_connect(struct omap_dss_device *dssdev, 743 struct omap_dss_device *dst) 744{ 745 struct omap_overlay_manager *mgr; 746 int r; 747 748 r = venc_init_regulator(); 749 if (r) 750 return r; 751 752 mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel); 753 if (!mgr) 754 return -ENODEV; 755 756 r = dss_mgr_connect(mgr, dssdev); 757 if (r) 758 return r; 759 760 r = omapdss_output_set_device(dssdev, dst); 761 if (r) { 762 DSSERR("failed to connect output to new device: %s\n", 763 dst->name); 764 dss_mgr_disconnect(mgr, dssdev); 765 return r; 766 } 767 768 return 0; 769} 770 771static void venc_disconnect(struct omap_dss_device *dssdev, 772 struct omap_dss_device *dst) 773{ 774 WARN_ON(dst != dssdev->dst); 775 776 if (dst != dssdev->dst) 777 return; 778 779 omapdss_output_unset_device(dssdev); 780 781 if (dssdev->manager) 782 dss_mgr_disconnect(dssdev->manager, dssdev); 783} 784 785static const struct omapdss_atv_ops venc_ops = { 786 .connect = venc_connect, 787 .disconnect = venc_disconnect, 788 789 .enable = venc_display_enable, 790 .disable = venc_display_disable, 791 792 .check_timings = venc_check_timings, 793 .set_timings = venc_set_timings, 794 .get_timings = venc_get_timings, 795 796 .set_type = venc_set_type, 797 .invert_vid_out_polarity = venc_invert_vid_out_polarity, 798 799 .set_wss = venc_set_wss, 800 .get_wss = venc_get_wss, 801}; 802 803static void venc_init_output(struct platform_device *pdev) 804{ 805 struct omap_dss_device *out = &venc.output; 806 807 out->dev = &pdev->dev; 808 out->id = OMAP_DSS_OUTPUT_VENC; 809 out->output_type = OMAP_DISPLAY_TYPE_VENC; 810 out->name = "venc.0"; 811 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; 812 out->ops.atv = &venc_ops; 813 out->owner = THIS_MODULE; 814 815 omapdss_register_output(out); 816} 817 818static void venc_uninit_output(struct platform_device *pdev) 819{ 820 struct omap_dss_device *out = &venc.output; 821 822 omapdss_unregister_output(out); 823} 824 825static int venc_probe_of(struct platform_device *pdev) 826{ 827 struct device_node *node = pdev->dev.of_node; 828 struct device_node *ep; 829 u32 channels; 830 int r; 831 832 ep = omapdss_of_get_first_endpoint(node); 833 if (!ep) 834 return 0; 835 836 venc.invert_polarity = of_property_read_bool(ep, "ti,invert-polarity"); 837 838 r = of_property_read_u32(ep, "ti,channels", &channels); 839 if (r) { 840 dev_err(&pdev->dev, 841 "failed to read property 'ti,channels': %d\n", r); 842 goto err; 843 } 844 845 switch (channels) { 846 case 1: 847 venc.type = OMAP_DSS_VENC_TYPE_COMPOSITE; 848 break; 849 case 2: 850 venc.type = OMAP_DSS_VENC_TYPE_SVIDEO; 851 break; 852 default: 853 dev_err(&pdev->dev, "bad channel propert '%d'\n", channels); 854 r = -EINVAL; 855 goto err; 856 } 857 858 of_node_put(ep); 859 860 return 0; 861err: 862 of_node_put(ep); 863 864 return 0; 865} 866 867/* VENC HW IP initialisation */ 868static int venc_bind(struct device *dev, struct device *master, void *data) 869{ 870 struct platform_device *pdev = to_platform_device(dev); 871 u8 rev_id; 872 struct resource *venc_mem; 873 int r; 874 875 venc.pdev = pdev; 876 877 mutex_init(&venc.venc_lock); 878 879 venc.wss_data = 0; 880 881 venc_mem = platform_get_resource(venc.pdev, IORESOURCE_MEM, 0); 882 if (!venc_mem) { 883 DSSERR("can't get IORESOURCE_MEM VENC\n"); 884 return -EINVAL; 885 } 886 887 venc.base = devm_ioremap(&pdev->dev, venc_mem->start, 888 resource_size(venc_mem)); 889 if (!venc.base) { 890 DSSERR("can't ioremap VENC\n"); 891 return -ENOMEM; 892 } 893 894 r = venc_get_clocks(pdev); 895 if (r) 896 return r; 897 898 pm_runtime_enable(&pdev->dev); 899 900 r = venc_runtime_get(); 901 if (r) 902 goto err_runtime_get; 903 904 rev_id = (u8)(venc_read_reg(VENC_REV_ID) & 0xff); 905 dev_dbg(&pdev->dev, "OMAP VENC rev %d\n", rev_id); 906 907 venc_runtime_put(); 908 909 if (pdev->dev.of_node) { 910 r = venc_probe_of(pdev); 911 if (r) { 912 DSSERR("Invalid DT data\n"); 913 goto err_probe_of; 914 } 915 } 916 917 dss_debugfs_create_file("venc", venc_dump_regs); 918 919 venc_init_output(pdev); 920 921 return 0; 922 923err_probe_of: 924err_runtime_get: 925 pm_runtime_disable(&pdev->dev); 926 return r; 927} 928 929static void venc_unbind(struct device *dev, struct device *master, void *data) 930{ 931 struct platform_device *pdev = to_platform_device(dev); 932 933 venc_uninit_output(pdev); 934 935 pm_runtime_disable(&pdev->dev); 936} 937 938static const struct component_ops venc_component_ops = { 939 .bind = venc_bind, 940 .unbind = venc_unbind, 941}; 942 943static int venc_probe(struct platform_device *pdev) 944{ 945 return component_add(&pdev->dev, &venc_component_ops); 946} 947 948static int venc_remove(struct platform_device *pdev) 949{ 950 component_del(&pdev->dev, &venc_component_ops); 951 return 0; 952} 953 954static int venc_runtime_suspend(struct device *dev) 955{ 956 if (venc.tv_dac_clk) 957 clk_disable_unprepare(venc.tv_dac_clk); 958 959 dispc_runtime_put(); 960 961 return 0; 962} 963 964static int venc_runtime_resume(struct device *dev) 965{ 966 int r; 967 968 r = dispc_runtime_get(); 969 if (r < 0) 970 return r; 971 972 if (venc.tv_dac_clk) 973 clk_prepare_enable(venc.tv_dac_clk); 974 975 return 0; 976} 977 978static const struct dev_pm_ops venc_pm_ops = { 979 .runtime_suspend = venc_runtime_suspend, 980 .runtime_resume = venc_runtime_resume, 981}; 982 983static const struct of_device_id venc_of_match[] = { 984 { .compatible = "ti,omap2-venc", }, 985 { .compatible = "ti,omap3-venc", }, 986 { .compatible = "ti,omap4-venc", }, 987 {}, 988}; 989 990static struct platform_driver omap_venchw_driver = { 991 .probe = venc_probe, 992 .remove = venc_remove, 993 .driver = { 994 .name = "omapdss_venc", 995 .pm = &venc_pm_ops, 996 .of_match_table = venc_of_match, 997 .suppress_bind_attrs = true, 998 }, 999}; 1000 1001int __init venc_init_platform_driver(void) 1002{ 1003 return platform_driver_register(&omap_venchw_driver); 1004} 1005 1006void venc_uninit_platform_driver(void) 1007{ 1008 platform_driver_unregister(&omap_venchw_driver); 1009} 1010