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/of_graph.h> 39 #include <linux/component.h> 40 41 #include "omapdss.h" 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 91 struct 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 */ 134 static 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 */ 179 static 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 }; 222 223 static 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 }; 265 266 const struct videomode omap_dss_pal_vm = { 267 .hactive = 720, 268 .vactive = 574, 269 .pixelclock = 13500000, 270 .hsync_len = 64, 271 .hfront_porch = 12, 272 .hback_porch = 68, 273 .vsync_len = 5, 274 .vfront_porch = 5, 275 .vback_porch = 41, 276 277 .flags = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW | 278 DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH | 279 DISPLAY_FLAGS_PIXDATA_POSEDGE | 280 DISPLAY_FLAGS_SYNC_NEGEDGE, 281 }; 282 EXPORT_SYMBOL(omap_dss_pal_vm); 283 284 const struct videomode omap_dss_ntsc_vm = { 285 .hactive = 720, 286 .vactive = 482, 287 .pixelclock = 13500000, 288 .hsync_len = 64, 289 .hfront_porch = 16, 290 .hback_porch = 58, 291 .vsync_len = 6, 292 .vfront_porch = 6, 293 .vback_porch = 31, 294 295 .flags = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW | 296 DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH | 297 DISPLAY_FLAGS_PIXDATA_POSEDGE | 298 DISPLAY_FLAGS_SYNC_NEGEDGE, 299 }; 300 EXPORT_SYMBOL(omap_dss_ntsc_vm); 301 302 static struct { 303 struct platform_device *pdev; 304 void __iomem *base; 305 struct mutex venc_lock; 306 u32 wss_data; 307 struct regulator *vdda_dac_reg; 308 309 struct clk *tv_dac_clk; 310 311 struct videomode vm; 312 enum omap_dss_venc_type type; 313 bool invert_polarity; 314 315 struct omap_dss_device output; 316 } venc; 317 318 static inline void venc_write_reg(int idx, u32 val) 319 { 320 __raw_writel(val, venc.base + idx); 321 } 322 323 static inline u32 venc_read_reg(int idx) 324 { 325 u32 l = __raw_readl(venc.base + idx); 326 return l; 327 } 328 329 static void venc_write_config(const struct venc_config *config) 330 { 331 DSSDBG("write venc conf\n"); 332 333 venc_write_reg(VENC_LLEN, config->llen); 334 venc_write_reg(VENC_FLENS, config->flens); 335 venc_write_reg(VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr); 336 venc_write_reg(VENC_C_PHASE, config->c_phase); 337 venc_write_reg(VENC_GAIN_U, config->gain_u); 338 venc_write_reg(VENC_GAIN_V, config->gain_v); 339 venc_write_reg(VENC_GAIN_Y, config->gain_y); 340 venc_write_reg(VENC_BLACK_LEVEL, config->black_level); 341 venc_write_reg(VENC_BLANK_LEVEL, config->blank_level); 342 venc_write_reg(VENC_M_CONTROL, config->m_control); 343 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data | 344 venc.wss_data); 345 venc_write_reg(VENC_S_CARR, config->s_carr); 346 venc_write_reg(VENC_L21__WC_CTL, config->l21__wc_ctl); 347 venc_write_reg(VENC_SAVID__EAVID, config->savid__eavid); 348 venc_write_reg(VENC_FLEN__FAL, config->flen__fal); 349 venc_write_reg(VENC_LAL__PHASE_RESET, config->lal__phase_reset); 350 venc_write_reg(VENC_HS_INT_START_STOP_X, config->hs_int_start_stop_x); 351 venc_write_reg(VENC_HS_EXT_START_STOP_X, config->hs_ext_start_stop_x); 352 venc_write_reg(VENC_VS_INT_START_X, config->vs_int_start_x); 353 venc_write_reg(VENC_VS_INT_STOP_X__VS_INT_START_Y, 354 config->vs_int_stop_x__vs_int_start_y); 355 venc_write_reg(VENC_VS_INT_STOP_Y__VS_EXT_START_X, 356 config->vs_int_stop_y__vs_ext_start_x); 357 venc_write_reg(VENC_VS_EXT_STOP_X__VS_EXT_START_Y, 358 config->vs_ext_stop_x__vs_ext_start_y); 359 venc_write_reg(VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y); 360 venc_write_reg(VENC_AVID_START_STOP_X, config->avid_start_stop_x); 361 venc_write_reg(VENC_AVID_START_STOP_Y, config->avid_start_stop_y); 362 venc_write_reg(VENC_FID_INT_START_X__FID_INT_START_Y, 363 config->fid_int_start_x__fid_int_start_y); 364 venc_write_reg(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X, 365 config->fid_int_offset_y__fid_ext_start_x); 366 venc_write_reg(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y, 367 config->fid_ext_start_y__fid_ext_offset_y); 368 369 venc_write_reg(VENC_DAC_B__DAC_C, venc_read_reg(VENC_DAC_B__DAC_C)); 370 venc_write_reg(VENC_VIDOUT_CTRL, config->vidout_ctrl); 371 venc_write_reg(VENC_HFLTR_CTRL, config->hfltr_ctrl); 372 venc_write_reg(VENC_X_COLOR, config->x_color); 373 venc_write_reg(VENC_LINE21, config->line21); 374 venc_write_reg(VENC_LN_SEL, config->ln_sel); 375 venc_write_reg(VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger); 376 venc_write_reg(VENC_TVDETGP_INT_START_STOP_X, 377 config->tvdetgp_int_start_stop_x); 378 venc_write_reg(VENC_TVDETGP_INT_START_STOP_Y, 379 config->tvdetgp_int_start_stop_y); 380 venc_write_reg(VENC_GEN_CTRL, config->gen_ctrl); 381 venc_write_reg(VENC_F_CONTROL, config->f_control); 382 venc_write_reg(VENC_SYNC_CTRL, config->sync_ctrl); 383 } 384 385 static void venc_reset(void) 386 { 387 int t = 1000; 388 389 venc_write_reg(VENC_F_CONTROL, 1<<8); 390 while (venc_read_reg(VENC_F_CONTROL) & (1<<8)) { 391 if (--t == 0) { 392 DSSERR("Failed to reset venc\n"); 393 return; 394 } 395 } 396 397 #ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET 398 /* the magical sleep that makes things work */ 399 /* XXX more info? What bug this circumvents? */ 400 msleep(20); 401 #endif 402 } 403 404 static int venc_runtime_get(void) 405 { 406 int r; 407 408 DSSDBG("venc_runtime_get\n"); 409 410 r = pm_runtime_get_sync(&venc.pdev->dev); 411 WARN_ON(r < 0); 412 return r < 0 ? r : 0; 413 } 414 415 static void venc_runtime_put(void) 416 { 417 int r; 418 419 DSSDBG("venc_runtime_put\n"); 420 421 r = pm_runtime_put_sync(&venc.pdev->dev); 422 WARN_ON(r < 0 && r != -ENOSYS); 423 } 424 425 static const struct venc_config *venc_timings_to_config(struct videomode *vm) 426 { 427 if (memcmp(&omap_dss_pal_vm, vm, sizeof(*vm)) == 0) 428 return &venc_config_pal_trm; 429 430 if (memcmp(&omap_dss_ntsc_vm, vm, sizeof(*vm)) == 0) 431 return &venc_config_ntsc_trm; 432 433 BUG(); 434 return NULL; 435 } 436 437 static int venc_power_on(struct omap_dss_device *dssdev) 438 { 439 enum omap_channel channel = dssdev->dispc_channel; 440 u32 l; 441 int r; 442 443 r = venc_runtime_get(); 444 if (r) 445 goto err0; 446 447 venc_reset(); 448 venc_write_config(venc_timings_to_config(&venc.vm)); 449 450 dss_set_venc_output(venc.type); 451 dss_set_dac_pwrdn_bgz(1); 452 453 l = 0; 454 455 if (venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE) 456 l |= 1 << 1; 457 else /* S-Video */ 458 l |= (1 << 0) | (1 << 2); 459 460 if (venc.invert_polarity == false) 461 l |= 1 << 3; 462 463 venc_write_reg(VENC_OUTPUT_CONTROL, l); 464 465 dss_mgr_set_timings(channel, &venc.vm); 466 467 r = regulator_enable(venc.vdda_dac_reg); 468 if (r) 469 goto err1; 470 471 r = dss_mgr_enable(channel); 472 if (r) 473 goto err2; 474 475 return 0; 476 477 err2: 478 regulator_disable(venc.vdda_dac_reg); 479 err1: 480 venc_write_reg(VENC_OUTPUT_CONTROL, 0); 481 dss_set_dac_pwrdn_bgz(0); 482 483 venc_runtime_put(); 484 err0: 485 return r; 486 } 487 488 static void venc_power_off(struct omap_dss_device *dssdev) 489 { 490 enum omap_channel channel = dssdev->dispc_channel; 491 492 venc_write_reg(VENC_OUTPUT_CONTROL, 0); 493 dss_set_dac_pwrdn_bgz(0); 494 495 dss_mgr_disable(channel); 496 497 regulator_disable(venc.vdda_dac_reg); 498 499 venc_runtime_put(); 500 } 501 502 static int venc_display_enable(struct omap_dss_device *dssdev) 503 { 504 struct omap_dss_device *out = &venc.output; 505 int r; 506 507 DSSDBG("venc_display_enable\n"); 508 509 mutex_lock(&venc.venc_lock); 510 511 if (!out->dispc_channel_connected) { 512 DSSERR("Failed to enable display: no output/manager\n"); 513 r = -ENODEV; 514 goto err0; 515 } 516 517 r = venc_power_on(dssdev); 518 if (r) 519 goto err0; 520 521 venc.wss_data = 0; 522 523 mutex_unlock(&venc.venc_lock); 524 525 return 0; 526 err0: 527 mutex_unlock(&venc.venc_lock); 528 return r; 529 } 530 531 static void venc_display_disable(struct omap_dss_device *dssdev) 532 { 533 DSSDBG("venc_display_disable\n"); 534 535 mutex_lock(&venc.venc_lock); 536 537 venc_power_off(dssdev); 538 539 mutex_unlock(&venc.venc_lock); 540 } 541 542 static void venc_set_timings(struct omap_dss_device *dssdev, 543 struct videomode *vm) 544 { 545 DSSDBG("venc_set_timings\n"); 546 547 mutex_lock(&venc.venc_lock); 548 549 /* Reset WSS data when the TV standard changes. */ 550 if (memcmp(&venc.vm, vm, sizeof(*vm))) 551 venc.wss_data = 0; 552 553 venc.vm = *vm; 554 555 dispc_set_tv_pclk(13500000); 556 557 mutex_unlock(&venc.venc_lock); 558 } 559 560 static int venc_check_timings(struct omap_dss_device *dssdev, 561 struct videomode *vm) 562 { 563 DSSDBG("venc_check_timings\n"); 564 565 if (memcmp(&omap_dss_pal_vm, vm, sizeof(*vm)) == 0) 566 return 0; 567 568 if (memcmp(&omap_dss_ntsc_vm, vm, sizeof(*vm)) == 0) 569 return 0; 570 571 return -EINVAL; 572 } 573 574 static void venc_get_timings(struct omap_dss_device *dssdev, 575 struct videomode *vm) 576 { 577 mutex_lock(&venc.venc_lock); 578 579 *vm = venc.vm; 580 581 mutex_unlock(&venc.venc_lock); 582 } 583 584 static u32 venc_get_wss(struct omap_dss_device *dssdev) 585 { 586 /* Invert due to VENC_L21_WC_CTL:INV=1 */ 587 return (venc.wss_data >> 8) ^ 0xfffff; 588 } 589 590 static int venc_set_wss(struct omap_dss_device *dssdev, u32 wss) 591 { 592 const struct venc_config *config; 593 int r; 594 595 DSSDBG("venc_set_wss\n"); 596 597 mutex_lock(&venc.venc_lock); 598 599 config = venc_timings_to_config(&venc.vm); 600 601 /* Invert due to VENC_L21_WC_CTL:INV=1 */ 602 venc.wss_data = (wss ^ 0xfffff) << 8; 603 604 r = venc_runtime_get(); 605 if (r) 606 goto err; 607 608 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data | 609 venc.wss_data); 610 611 venc_runtime_put(); 612 613 err: 614 mutex_unlock(&venc.venc_lock); 615 616 return r; 617 } 618 619 static int venc_init_regulator(void) 620 { 621 struct regulator *vdda_dac; 622 623 if (venc.vdda_dac_reg != NULL) 624 return 0; 625 626 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda"); 627 if (IS_ERR(vdda_dac)) { 628 if (PTR_ERR(vdda_dac) != -EPROBE_DEFER) 629 DSSERR("can't get VDDA_DAC regulator\n"); 630 return PTR_ERR(vdda_dac); 631 } 632 633 venc.vdda_dac_reg = vdda_dac; 634 635 return 0; 636 } 637 638 static void venc_dump_regs(struct seq_file *s) 639 { 640 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(r)) 641 642 if (venc_runtime_get()) 643 return; 644 645 DUMPREG(VENC_F_CONTROL); 646 DUMPREG(VENC_VIDOUT_CTRL); 647 DUMPREG(VENC_SYNC_CTRL); 648 DUMPREG(VENC_LLEN); 649 DUMPREG(VENC_FLENS); 650 DUMPREG(VENC_HFLTR_CTRL); 651 DUMPREG(VENC_CC_CARR_WSS_CARR); 652 DUMPREG(VENC_C_PHASE); 653 DUMPREG(VENC_GAIN_U); 654 DUMPREG(VENC_GAIN_V); 655 DUMPREG(VENC_GAIN_Y); 656 DUMPREG(VENC_BLACK_LEVEL); 657 DUMPREG(VENC_BLANK_LEVEL); 658 DUMPREG(VENC_X_COLOR); 659 DUMPREG(VENC_M_CONTROL); 660 DUMPREG(VENC_BSTAMP_WSS_DATA); 661 DUMPREG(VENC_S_CARR); 662 DUMPREG(VENC_LINE21); 663 DUMPREG(VENC_LN_SEL); 664 DUMPREG(VENC_L21__WC_CTL); 665 DUMPREG(VENC_HTRIGGER_VTRIGGER); 666 DUMPREG(VENC_SAVID__EAVID); 667 DUMPREG(VENC_FLEN__FAL); 668 DUMPREG(VENC_LAL__PHASE_RESET); 669 DUMPREG(VENC_HS_INT_START_STOP_X); 670 DUMPREG(VENC_HS_EXT_START_STOP_X); 671 DUMPREG(VENC_VS_INT_START_X); 672 DUMPREG(VENC_VS_INT_STOP_X__VS_INT_START_Y); 673 DUMPREG(VENC_VS_INT_STOP_Y__VS_EXT_START_X); 674 DUMPREG(VENC_VS_EXT_STOP_X__VS_EXT_START_Y); 675 DUMPREG(VENC_VS_EXT_STOP_Y); 676 DUMPREG(VENC_AVID_START_STOP_X); 677 DUMPREG(VENC_AVID_START_STOP_Y); 678 DUMPREG(VENC_FID_INT_START_X__FID_INT_START_Y); 679 DUMPREG(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X); 680 DUMPREG(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y); 681 DUMPREG(VENC_TVDETGP_INT_START_STOP_X); 682 DUMPREG(VENC_TVDETGP_INT_START_STOP_Y); 683 DUMPREG(VENC_GEN_CTRL); 684 DUMPREG(VENC_OUTPUT_CONTROL); 685 DUMPREG(VENC_OUTPUT_TEST); 686 687 venc_runtime_put(); 688 689 #undef DUMPREG 690 } 691 692 static int venc_get_clocks(struct platform_device *pdev) 693 { 694 struct clk *clk; 695 696 if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK)) { 697 clk = devm_clk_get(&pdev->dev, "tv_dac_clk"); 698 if (IS_ERR(clk)) { 699 DSSERR("can't get tv_dac_clk\n"); 700 return PTR_ERR(clk); 701 } 702 } else { 703 clk = NULL; 704 } 705 706 venc.tv_dac_clk = clk; 707 708 return 0; 709 } 710 711 static int venc_connect(struct omap_dss_device *dssdev, 712 struct omap_dss_device *dst) 713 { 714 enum omap_channel channel = dssdev->dispc_channel; 715 int r; 716 717 r = venc_init_regulator(); 718 if (r) 719 return r; 720 721 r = dss_mgr_connect(channel, dssdev); 722 if (r) 723 return r; 724 725 r = omapdss_output_set_device(dssdev, dst); 726 if (r) { 727 DSSERR("failed to connect output to new device: %s\n", 728 dst->name); 729 dss_mgr_disconnect(channel, dssdev); 730 return r; 731 } 732 733 return 0; 734 } 735 736 static void venc_disconnect(struct omap_dss_device *dssdev, 737 struct omap_dss_device *dst) 738 { 739 enum omap_channel channel = dssdev->dispc_channel; 740 741 WARN_ON(dst != dssdev->dst); 742 743 if (dst != dssdev->dst) 744 return; 745 746 omapdss_output_unset_device(dssdev); 747 748 dss_mgr_disconnect(channel, dssdev); 749 } 750 751 static const struct omapdss_atv_ops venc_ops = { 752 .connect = venc_connect, 753 .disconnect = venc_disconnect, 754 755 .enable = venc_display_enable, 756 .disable = venc_display_disable, 757 758 .check_timings = venc_check_timings, 759 .set_timings = venc_set_timings, 760 .get_timings = venc_get_timings, 761 762 .set_wss = venc_set_wss, 763 .get_wss = venc_get_wss, 764 }; 765 766 static void venc_init_output(struct platform_device *pdev) 767 { 768 struct omap_dss_device *out = &venc.output; 769 770 out->dev = &pdev->dev; 771 out->id = OMAP_DSS_OUTPUT_VENC; 772 out->output_type = OMAP_DISPLAY_TYPE_VENC; 773 out->name = "venc.0"; 774 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; 775 out->ops.atv = &venc_ops; 776 out->owner = THIS_MODULE; 777 778 omapdss_register_output(out); 779 } 780 781 static void venc_uninit_output(struct platform_device *pdev) 782 { 783 struct omap_dss_device *out = &venc.output; 784 785 omapdss_unregister_output(out); 786 } 787 788 static int venc_probe_of(struct platform_device *pdev) 789 { 790 struct device_node *node = pdev->dev.of_node; 791 struct device_node *ep; 792 u32 channels; 793 int r; 794 795 ep = of_graph_get_endpoint_by_regs(node, 0, 0); 796 if (!ep) 797 return 0; 798 799 venc.invert_polarity = of_property_read_bool(ep, "ti,invert-polarity"); 800 801 r = of_property_read_u32(ep, "ti,channels", &channels); 802 if (r) { 803 dev_err(&pdev->dev, 804 "failed to read property 'ti,channels': %d\n", r); 805 goto err; 806 } 807 808 switch (channels) { 809 case 1: 810 venc.type = OMAP_DSS_VENC_TYPE_COMPOSITE; 811 break; 812 case 2: 813 venc.type = OMAP_DSS_VENC_TYPE_SVIDEO; 814 break; 815 default: 816 dev_err(&pdev->dev, "bad channel propert '%d'\n", channels); 817 r = -EINVAL; 818 goto err; 819 } 820 821 of_node_put(ep); 822 823 return 0; 824 err: 825 of_node_put(ep); 826 827 return 0; 828 } 829 830 /* VENC HW IP initialisation */ 831 static int venc_bind(struct device *dev, struct device *master, void *data) 832 { 833 struct platform_device *pdev = to_platform_device(dev); 834 u8 rev_id; 835 struct resource *venc_mem; 836 int r; 837 838 venc.pdev = pdev; 839 840 mutex_init(&venc.venc_lock); 841 842 venc.wss_data = 0; 843 844 venc_mem = platform_get_resource(venc.pdev, IORESOURCE_MEM, 0); 845 venc.base = devm_ioremap_resource(&pdev->dev, venc_mem); 846 if (IS_ERR(venc.base)) 847 return PTR_ERR(venc.base); 848 849 r = venc_get_clocks(pdev); 850 if (r) 851 return r; 852 853 pm_runtime_enable(&pdev->dev); 854 855 r = venc_runtime_get(); 856 if (r) 857 goto err_runtime_get; 858 859 rev_id = (u8)(venc_read_reg(VENC_REV_ID) & 0xff); 860 dev_dbg(&pdev->dev, "OMAP VENC rev %d\n", rev_id); 861 862 venc_runtime_put(); 863 864 r = venc_probe_of(pdev); 865 if (r) { 866 DSSERR("Invalid DT data\n"); 867 goto err_probe_of; 868 } 869 870 dss_debugfs_create_file("venc", venc_dump_regs); 871 872 venc_init_output(pdev); 873 874 return 0; 875 876 err_probe_of: 877 err_runtime_get: 878 pm_runtime_disable(&pdev->dev); 879 return r; 880 } 881 882 static void venc_unbind(struct device *dev, struct device *master, void *data) 883 { 884 struct platform_device *pdev = to_platform_device(dev); 885 886 venc_uninit_output(pdev); 887 888 pm_runtime_disable(&pdev->dev); 889 } 890 891 static const struct component_ops venc_component_ops = { 892 .bind = venc_bind, 893 .unbind = venc_unbind, 894 }; 895 896 static int venc_probe(struct platform_device *pdev) 897 { 898 return component_add(&pdev->dev, &venc_component_ops); 899 } 900 901 static int venc_remove(struct platform_device *pdev) 902 { 903 component_del(&pdev->dev, &venc_component_ops); 904 return 0; 905 } 906 907 static int venc_runtime_suspend(struct device *dev) 908 { 909 if (venc.tv_dac_clk) 910 clk_disable_unprepare(venc.tv_dac_clk); 911 912 dispc_runtime_put(); 913 914 return 0; 915 } 916 917 static int venc_runtime_resume(struct device *dev) 918 { 919 int r; 920 921 r = dispc_runtime_get(); 922 if (r < 0) 923 return r; 924 925 if (venc.tv_dac_clk) 926 clk_prepare_enable(venc.tv_dac_clk); 927 928 return 0; 929 } 930 931 static const struct dev_pm_ops venc_pm_ops = { 932 .runtime_suspend = venc_runtime_suspend, 933 .runtime_resume = venc_runtime_resume, 934 }; 935 936 static const struct of_device_id venc_of_match[] = { 937 { .compatible = "ti,omap2-venc", }, 938 { .compatible = "ti,omap3-venc", }, 939 { .compatible = "ti,omap4-venc", }, 940 {}, 941 }; 942 943 static struct platform_driver omap_venchw_driver = { 944 .probe = venc_probe, 945 .remove = venc_remove, 946 .driver = { 947 .name = "omapdss_venc", 948 .pm = &venc_pm_ops, 949 .of_match_table = venc_of_match, 950 .suppress_bind_attrs = true, 951 }, 952 }; 953 954 int __init venc_init_platform_driver(void) 955 { 956 return platform_driver_register(&omap_venchw_driver); 957 } 958 959 void venc_uninit_platform_driver(void) 960 { 961 platform_driver_unregister(&omap_venchw_driver); 962 } 963