drivers/video/omap2/dss/venc.c

   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
  38 #include <video/omapdss.h>
  39 #include <plat/cpu.h>
  40
  41 #include "dss.h"
  42 #include "dss_features.h"
  43
  44 /* Venc registers */
  45 #define VENC_REV_ID                             0x00
  46 #define VENC_STATUS                             0x04
  47 #define VENC_F_CONTROL                          0x08
  48 #define VENC_VIDOUT_CTRL                        0x10
  49 #define VENC_SYNC_CTRL                          0x14
  50 #define VENC_LLEN                               0x1C
  51 #define VENC_FLENS                              0x20
  52 #define VENC_HFLTR_CTRL                         0x24
  53 #define VENC_CC_CARR_WSS_CARR                   0x28
  54 #define VENC_C_PHASE                            0x2C
  55 #define VENC_GAIN_U                             0x30
  56 #define VENC_GAIN_V                             0x34
  57 #define VENC_GAIN_Y                             0x38
  58 #define VENC_BLACK_LEVEL                        0x3C
  59 #define VENC_BLANK_LEVEL                        0x40
  60 #define VENC_X_COLOR                            0x44
  61 #define VENC_M_CONTROL                          0x48
  62 #define VENC_BSTAMP_WSS_DATA                    0x4C
  63 #define VENC_S_CARR                             0x50
  64 #define VENC_LINE21                             0x54
  65 #define VENC_LN_SEL                             0x58
  66 #define VENC_L21__WC_CTL                        0x5C
  67 #define VENC_HTRIGGER_VTRIGGER                  0x60
  68 #define VENC_SAVID__EAVID                       0x64
  69 #define VENC_FLEN__FAL                          0x68
  70 #define VENC_LAL__PHASE_RESET                   0x6C
  71 #define VENC_HS_INT_START_STOP_X                0x70
  72 #define VENC_HS_EXT_START_STOP_X                0x74
  73 #define VENC_VS_INT_START_X                     0x78
  74 #define VENC_VS_INT_STOP_X__VS_INT_START_Y      0x7C
  75 #define VENC_VS_INT_STOP_Y__VS_EXT_START_X      0x80
  76 #define VENC_VS_EXT_STOP_X__VS_EXT_START_Y      0x84
  77 #define VENC_VS_EXT_STOP_Y                      0x88
  78 #define VENC_AVID_START_STOP_X                  0x90
  79 #define VENC_AVID_START_STOP_Y                  0x94
  80 #define VENC_FID_INT_START_X__FID_INT_START_Y   0xA0
  81 #define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X  0xA4
  82 #define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y  0xA8
  83 #define VENC_TVDETGP_INT_START_STOP_X           0xB0
  84 #define VENC_TVDETGP_INT_START_STOP_Y           0xB4
  85 #define VENC_GEN_CTRL                           0xB8
  86 #define VENC_OUTPUT_CONTROL                     0xC4
  87 #define VENC_OUTPUT_TEST                        0xC8
  88 #define VENC_DAC_B__DAC_C                       0xC8
  89
  90 struct venc_config {
  91         u32 f_control;
  92         u32 vidout_ctrl;
  93         u32 sync_ctrl;
  94         u32 llen;
  95         u32 flens;
  96         u32 hfltr_ctrl;
  97         u32 cc_carr_wss_carr;
  98         u32 c_phase;
  99         u32 gain_u;
 100         u32 gain_v;
 101         u32 gain_y;
 102         u32 black_level;
 103         u32 blank_level;
 104         u32 x_color;
 105         u32 m_control;
 106         u32 bstamp_wss_data;
 107         u32 s_carr;
 108         u32 line21;
 109         u32 ln_sel;
 110         u32 l21__wc_ctl;
 111         u32 htrigger_vtrigger;
 112         u32 savid__eavid;
 113         u32 flen__fal;
 114         u32 lal__phase_reset;
 115         u32 hs_int_start_stop_x;
 116         u32 hs_ext_start_stop_x;
 117         u32 vs_int_start_x;
 118         u32 vs_int_stop_x__vs_int_start_y;
 119         u32 vs_int_stop_y__vs_ext_start_x;
 120         u32 vs_ext_stop_x__vs_ext_start_y;
 121         u32 vs_ext_stop_y;
 122         u32 avid_start_stop_x;
 123         u32 avid_start_stop_y;
 124         u32 fid_int_start_x__fid_int_start_y;
 125         u32 fid_int_offset_y__fid_ext_start_x;
 126         u32 fid_ext_start_y__fid_ext_offset_y;
 127         u32 tvdetgp_int_start_stop_x;
 128         u32 tvdetgp_int_start_stop_y;
 129         u32 gen_ctrl;
 130 };
 131
 132 /* from TRM */
 133 static const struct venc_config venc_config_pal_trm = {
 134         .f_control                              = 0,
 135         .vidout_ctrl                            = 1,
 136         .sync_ctrl                              = 0x40,
 137         .llen                                   = 0x35F, /* 863 */
 138         .flens                                  = 0x270, /* 624 */
 139         .hfltr_ctrl                             = 0,
 140         .cc_carr_wss_carr                       = 0x2F7225ED,
 141         .c_phase                                = 0,
 142         .gain_u                                 = 0x111,
 143         .gain_v                                 = 0x181,
 144         .gain_y                                 = 0x140,
 145         .black_level                            = 0x3B,
 146         .blank_level                            = 0x3B,
 147         .x_color                                = 0x7,
 148         .m_control                              = 0x2,
 149         .bstamp_wss_data                        = 0x3F,
 150         .s_carr                                 = 0x2A098ACB,
 151         .line21                                 = 0,
 152         .ln_sel                                 = 0x01290015,
 153         .l21__wc_ctl                            = 0x0000F603,
 154         .htrigger_vtrigger                      = 0,
 155
 156         .savid__eavid                           = 0x06A70108,
 157         .flen__fal                              = 0x00180270,
 158         .lal__phase_reset                       = 0x00040135,
 159         .hs_int_start_stop_x                    = 0x00880358,
 160         .hs_ext_start_stop_x                    = 0x000F035F,
 161         .vs_int_start_x                         = 0x01A70000,
 162         .vs_int_stop_x__vs_int_start_y          = 0x000001A7,
 163         .vs_int_stop_y__vs_ext_start_x          = 0x01AF0000,
 164         .vs_ext_stop_x__vs_ext_start_y          = 0x000101AF,
 165         .vs_ext_stop_y                          = 0x00000025,
 166         .avid_start_stop_x                      = 0x03530083,
 167         .avid_start_stop_y                      = 0x026C002E,
 168         .fid_int_start_x__fid_int_start_y       = 0x0001008A,
 169         .fid_int_offset_y__fid_ext_start_x      = 0x002E0138,
 170         .fid_ext_start_y__fid_ext_offset_y      = 0x01380001,
 171
 172         .tvdetgp_int_start_stop_x               = 0x00140001,
 173         .tvdetgp_int_start_stop_y               = 0x00010001,
 174         .gen_ctrl                               = 0x00FF0000,
 175 };
 176
 177 /* from TRM */
 178 static const struct venc_config venc_config_ntsc_trm = {
 179         .f_control                              = 0,
 180         .vidout_ctrl                            = 1,
 181         .sync_ctrl                              = 0x8040,
 182         .llen                                   = 0x359,
 183         .flens                                  = 0x20C,
 184         .hfltr_ctrl                             = 0,
 185         .cc_carr_wss_carr                       = 0x043F2631,
 186         .c_phase                                = 0,
 187         .gain_u                                 = 0x102,
 188         .gain_v                                 = 0x16C,
 189         .gain_y                                 = 0x12F,
 190         .black_level                            = 0x43,
 191         .blank_level                            = 0x38,
 192         .x_color                                = 0x7,
 193         .m_control                              = 0x1,
 194         .bstamp_wss_data                        = 0x38,
 195         .s_carr                                 = 0x21F07C1F,
 196         .line21                                 = 0,
 197         .ln_sel                                 = 0x01310011,
 198         .l21__wc_ctl                            = 0x0000F003,
 199         .htrigger_vtrigger                      = 0,
 200
 201         .savid__eavid                           = 0x069300F4,
 202         .flen__fal                              = 0x0016020C,
 203         .lal__phase_reset                       = 0x00060107,
 204         .hs_int_start_stop_x                    = 0x008E0350,
 205         .hs_ext_start_stop_x                    = 0x000F0359,
 206         .vs_int_start_x                         = 0x01A00000,
 207         .vs_int_stop_x__vs_int_start_y          = 0x020701A0,
 208         .vs_int_stop_y__vs_ext_start_x          = 0x01AC0024,
 209         .vs_ext_stop_x__vs_ext_start_y          = 0x020D01AC,
 210         .vs_ext_stop_y                          = 0x00000006,
 211         .avid_start_stop_x                      = 0x03480078,
 212         .avid_start_stop_y                      = 0x02060024,
 213         .fid_int_start_x__fid_int_start_y       = 0x0001008A,
 214         .fid_int_offset_y__fid_ext_start_x      = 0x01AC0106,
 215         .fid_ext_start_y__fid_ext_offset_y      = 0x01060006,
 216
 217         .tvdetgp_int_start_stop_x               = 0x00140001,
 218         .tvdetgp_int_start_stop_y               = 0x00010001,
 219         .gen_ctrl                               = 0x00F90000,
 220 };
 221
 222 static const struct venc_config venc_config_pal_bdghi = {
 223         .f_control                              = 0,
 224         .vidout_ctrl                            = 0,
 225         .sync_ctrl                              = 0,
 226         .hfltr_ctrl                             = 0,
 227         .x_color                                = 0,
 228         .line21                                 = 0,
 229         .ln_sel                                 = 21,
 230         .htrigger_vtrigger                      = 0,
 231         .tvdetgp_int_start_stop_x               = 0x00140001,
 232         .tvdetgp_int_start_stop_y               = 0x00010001,
 233         .gen_ctrl                               = 0x00FB0000,
 234
 235         .llen                                   = 864-1,
 236         .flens                                  = 625-1,
 237         .cc_carr_wss_carr                       = 0x2F7625ED,
 238         .c_phase                                = 0xDF,
 239         .gain_u                                 = 0x111,
 240         .gain_v                                 = 0x181,
 241         .gain_y                                 = 0x140,
 242         .black_level                            = 0x3e,
 243         .blank_level                            = 0x3e,
 244         .m_control                              = 0<<2 | 1<<1,
 245         .bstamp_wss_data                        = 0x42,
 246         .s_carr                                 = 0x2a098acb,
 247         .l21__wc_ctl                            = 0<<13 | 0x16<<8 | 0<<0,
 248         .savid__eavid                           = 0x06A70108,
 249         .flen__fal                              = 23<<16 | 624<<0,
 250         .lal__phase_reset                       = 2<<17 | 310<<0,
 251         .hs_int_start_stop_x                    = 0x00920358,
 252         .hs_ext_start_stop_x                    = 0x000F035F,
 253         .vs_int_start_x                         = 0x1a7<<16,
 254         .vs_int_stop_x__vs_int_start_y          = 0x000601A7,
 255         .vs_int_stop_y__vs_ext_start_x          = 0x01AF0036,
 256         .vs_ext_stop_x__vs_ext_start_y          = 0x27101af,
 257         .vs_ext_stop_y                          = 0x05,
 258         .avid_start_stop_x                      = 0x03530082,
 259         .avid_start_stop_y                      = 0x0270002E,
 260         .fid_int_start_x__fid_int_start_y       = 0x0005008A,
 261         .fid_int_offset_y__fid_ext_start_x      = 0x002E0138,
 262         .fid_ext_start_y__fid_ext_offset_y      = 0x01380005,
 263 };
 264
 265 const struct omap_video_timings omap_dss_pal_timings = {
 266         .x_res          = 720,
 267         .y_res          = 574,
 268         .pixel_clock    = 13500,
 269         .hsw            = 64,
 270         .hfp            = 12,
 271         .hbp            = 68,
 272         .vsw            = 5,
 273         .vfp            = 5,
 274         .vbp            = 41,
 275 };
 276 EXPORT_SYMBOL(omap_dss_pal_timings);
 277
 278 const struct omap_video_timings omap_dss_ntsc_timings = {
 279         .x_res          = 720,
 280         .y_res          = 482,
 281         .pixel_clock    = 13500,
 282         .hsw            = 64,
 283         .hfp            = 16,
 284         .hbp            = 58,
 285         .vsw            = 6,
 286         .vfp            = 6,
 287         .vbp            = 31,
 288 };
 289 EXPORT_SYMBOL(omap_dss_ntsc_timings);
 290
 291 static struct {
 292         struct platform_device *pdev;
 293         void __iomem *base;
 294         struct mutex venc_lock;
 295         u32 wss_data;
 296         struct regulator *vdda_dac_reg;
 297
 298         struct clk      *tv_dac_clk;
 299 } venc;
 300
 301 static inline void venc_write_reg(int idx, u32 val)
 302 {
 303         __raw_writel(val, venc.base + idx);
 304 }
 305
 306 static inline u32 venc_read_reg(int idx)
 307 {
 308         u32 l = __raw_readl(venc.base + idx);
 309         return l;
 310 }
 311
 312 static void venc_write_config(const struct venc_config *config)
 313 {
 314         DSSDBG("write venc conf\n");
 315
 316         venc_write_reg(VENC_LLEN, config->llen);
 317         venc_write_reg(VENC_FLENS, config->flens);
 318         venc_write_reg(VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr);
 319         venc_write_reg(VENC_C_PHASE, config->c_phase);
 320         venc_write_reg(VENC_GAIN_U, config->gain_u);
 321         venc_write_reg(VENC_GAIN_V, config->gain_v);
 322         venc_write_reg(VENC_GAIN_Y, config->gain_y);
 323         venc_write_reg(VENC_BLACK_LEVEL, config->black_level);
 324         venc_write_reg(VENC_BLANK_LEVEL, config->blank_level);
 325         venc_write_reg(VENC_M_CONTROL, config->m_control);
 326         venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
 327                         venc.wss_data);
 328         venc_write_reg(VENC_S_CARR, config->s_carr);
 329         venc_write_reg(VENC_L21__WC_CTL, config->l21__wc_ctl);
 330         venc_write_reg(VENC_SAVID__EAVID, config->savid__eavid);
 331         venc_write_reg(VENC_FLEN__FAL, config->flen__fal);
 332         venc_write_reg(VENC_LAL__PHASE_RESET, config->lal__phase_reset);
 333         venc_write_reg(VENC_HS_INT_START_STOP_X, config->hs_int_start_stop_x);
 334         venc_write_reg(VENC_HS_EXT_START_STOP_X, config->hs_ext_start_stop_x);
 335         venc_write_reg(VENC_VS_INT_START_X, config->vs_int_start_x);
 336         venc_write_reg(VENC_VS_INT_STOP_X__VS_INT_START_Y,
 337                        config->vs_int_stop_x__vs_int_start_y);
 338         venc_write_reg(VENC_VS_INT_STOP_Y__VS_EXT_START_X,
 339                        config->vs_int_stop_y__vs_ext_start_x);
 340         venc_write_reg(VENC_VS_EXT_STOP_X__VS_EXT_START_Y,
 341                        config->vs_ext_stop_x__vs_ext_start_y);
 342         venc_write_reg(VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y);
 343         venc_write_reg(VENC_AVID_START_STOP_X, config->avid_start_stop_x);
 344         venc_write_reg(VENC_AVID_START_STOP_Y, config->avid_start_stop_y);
 345         venc_write_reg(VENC_FID_INT_START_X__FID_INT_START_Y,
 346                        config->fid_int_start_x__fid_int_start_y);
 347         venc_write_reg(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X,
 348                        config->fid_int_offset_y__fid_ext_start_x);
 349         venc_write_reg(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y,
 350                        config->fid_ext_start_y__fid_ext_offset_y);
 351
 352         venc_write_reg(VENC_DAC_B__DAC_C,  venc_read_reg(VENC_DAC_B__DAC_C));
 353         venc_write_reg(VENC_VIDOUT_CTRL, config->vidout_ctrl);
 354         venc_write_reg(VENC_HFLTR_CTRL, config->hfltr_ctrl);
 355         venc_write_reg(VENC_X_COLOR, config->x_color);
 356         venc_write_reg(VENC_LINE21, config->line21);
 357         venc_write_reg(VENC_LN_SEL, config->ln_sel);
 358         venc_write_reg(VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger);
 359         venc_write_reg(VENC_TVDETGP_INT_START_STOP_X,
 360                        config->tvdetgp_int_start_stop_x);
 361         venc_write_reg(VENC_TVDETGP_INT_START_STOP_Y,
 362                        config->tvdetgp_int_start_stop_y);
 363         venc_write_reg(VENC_GEN_CTRL, config->gen_ctrl);
 364         venc_write_reg(VENC_F_CONTROL, config->f_control);
 365         venc_write_reg(VENC_SYNC_CTRL, config->sync_ctrl);
 366 }
 367
 368 static void venc_reset(void)
 369 {
 370         int t = 1000;
 371
 372         venc_write_reg(VENC_F_CONTROL, 1<<8);
 373         while (venc_read_reg(VENC_F_CONTROL) & (1<<8)) {
 374                 if (--t == 0) {
 375                         DSSERR("Failed to reset venc\n");
 376                         return;
 377                 }
 378         }
 379
 380 #ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET
 381         /* the magical sleep that makes things work */
 382         /* XXX more info? What bug this circumvents? */
 383         msleep(20);
 384 #endif
 385 }
 386
 387 static int venc_runtime_get(void)
 388 {
 389         int r;
 390
 391         DSSDBG("venc_runtime_get\n");
 392
 393         r = pm_runtime_get_sync(&venc.pdev->dev);
 394         WARN_ON(r < 0);
 395         return r < 0 ? r : 0;
 396 }
 397
 398 static void venc_runtime_put(void)
 399 {
 400         int r;
 401
 402         DSSDBG("venc_runtime_put\n");
 403
 404         r = pm_runtime_put_sync(&venc.pdev->dev);
 405         WARN_ON(r < 0);
 406 }
 407
 408 static const struct venc_config *venc_timings_to_config(
 409                 struct omap_video_timings *timings)
 410 {
 411         if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0)
 412                 return &venc_config_pal_trm;
 413
 414         if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0)
 415                 return &venc_config_ntsc_trm;
 416
 417         BUG();
 418 }
 419
 420 static void venc_power_on(struct omap_dss_device *dssdev)
 421 {
 422         u32 l;
 423
 424         venc_reset();
 425         venc_write_config(venc_timings_to_config(&dssdev->panel.timings));
 426
 427         dss_set_venc_output(dssdev->phy.venc.type);
 428         dss_set_dac_pwrdn_bgz(1);
 429
 430         l = 0;
 431
 432         if (dssdev->phy.venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE)
 433                 l |= 1 << 1;
 434         else /* S-Video */
 435                 l |= (1 << 0) | (1 << 2);
 436
 437         if (dssdev->phy.venc.invert_polarity == false)
 438                 l |= 1 << 3;
 439
 440         venc_write_reg(VENC_OUTPUT_CONTROL, l);
 441
 442         dispc_set_digit_size(dssdev->panel.timings.x_res,
 443                         dssdev->panel.timings.y_res/2);
 444
 445         regulator_enable(venc.vdda_dac_reg);
 446
 447         if (dssdev->platform_enable)
 448                 dssdev->platform_enable(dssdev);
 449
 450         dssdev->manager->enable(dssdev->manager);
 451 }
 452
 453 static void venc_power_off(struct omap_dss_device *dssdev)
 454 {
 455         venc_write_reg(VENC_OUTPUT_CONTROL, 0);
 456         dss_set_dac_pwrdn_bgz(0);
 457
 458         dssdev->manager->disable(dssdev->manager);
 459
 460         if (dssdev->platform_disable)
 461                 dssdev->platform_disable(dssdev);
 462
 463         regulator_disable(venc.vdda_dac_reg);
 464 }
 465
 466 unsigned long venc_get_pixel_clock(void)
 467 {
 468         /* VENC Pixel Clock in Mhz */
 469         return 13500000;
 470 }
 471
 472 static ssize_t display_venc_type_show(struct device *dev,
 473                 struct device_attribute *attr, char *buf)
 474 {
 475         struct omap_dss_device *dssdev = to_dss_device(dev);
 476         const char *ret;
 477
 478         switch (dssdev->phy.venc.type) {
 479         case OMAP_DSS_VENC_TYPE_COMPOSITE:
 480                 ret = "composite";
 481                 break;
 482         case OMAP_DSS_VENC_TYPE_SVIDEO:
 483                 ret = "svideo";
 484                 break;
 485         default:
 486                 ret = "unknown";
 487                 break;
 488         }
 489
 490         return snprintf(buf, PAGE_SIZE, "%s\n", ret);
 491 }
 492
 493 static ssize_t display_venc_type_store(struct device *dev,
 494                 struct device_attribute *attr, const char *buf, size_t size)
 495 {
 496         struct omap_dss_device *dssdev = to_dss_device(dev);
 497         enum omap_dss_venc_type new_type;
 498
 499         if (strncmp("composite", buf, 9) == 0)
 500                 new_type = OMAP_DSS_VENC_TYPE_COMPOSITE;
 501         else if (strncmp("svideo", buf, 6) == 0)
 502                 new_type = OMAP_DSS_VENC_TYPE_SVIDEO;
 503         else
 504                 return -EINVAL;
 505
 506         mutex_lock(&venc.venc_lock);
 507
 508         if (dssdev->phy.venc.type != new_type) {
 509                 dssdev->phy.venc.type = new_type;
 510                 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
 511                         venc_power_off(dssdev);
 512                         venc_power_on(dssdev);
 513                 }
 514         }
 515
 516         mutex_unlock(&venc.venc_lock);
 517
 518         return size;
 519 }
 520
 521 static DEVICE_ATTR(venc_type, S_IRUGO | S_IWUSR,
 522                 display_venc_type_show, display_venc_type_store);
 523
 524 /* driver */
 525 static int venc_panel_probe(struct omap_dss_device *dssdev)
 526 {
 527         dssdev->panel.timings = omap_dss_pal_timings;
 528
 529         return device_create_file(&dssdev->dev, &dev_attr_venc_type);
 530 }
 531
 532 static void venc_panel_remove(struct omap_dss_device *dssdev)
 533 {
 534         device_remove_file(&dssdev->dev, &dev_attr_venc_type);
 535 }
 536
 537 static int venc_panel_enable(struct omap_dss_device *dssdev)
 538 {
 539         int r = 0;
 540
 541         DSSDBG("venc_enable_display\n");
 542
 543         mutex_lock(&venc.venc_lock);
 544
 545         r = omap_dss_start_device(dssdev);
 546         if (r) {
 547                 DSSERR("failed to start device\n");
 548                 goto err0;
 549         }
 550
 551         if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
 552                 r = -EINVAL;
 553                 goto err1;
 554         }
 555
 556         r = venc_runtime_get();
 557         if (r)
 558                 goto err1;
 559
 560         venc_power_on(dssdev);
 561
 562         venc.wss_data = 0;
 563
 564         dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 565
 566         mutex_unlock(&venc.venc_lock);
 567         return 0;
 568 err1:
 569         omap_dss_stop_device(dssdev);
 570 err0:
 571         mutex_unlock(&venc.venc_lock);
 572
 573         return r;
 574 }
 575
 576 static void venc_panel_disable(struct omap_dss_device *dssdev)
 577 {
 578         DSSDBG("venc_disable_display\n");
 579
 580         mutex_lock(&venc.venc_lock);
 581
 582         if (dssdev->state == OMAP_DSS_DISPLAY_DISABLED)
 583                 goto end;
 584
 585         if (dssdev->state == OMAP_DSS_DISPLAY_SUSPENDED) {
 586                 /* suspended is the same as disabled with venc */
 587                 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 588                 goto end;
 589         }
 590
 591         venc_power_off(dssdev);
 592
 593         venc_runtime_put();
 594
 595         dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 596
 597         omap_dss_stop_device(dssdev);
 598 end:
 599         mutex_unlock(&venc.venc_lock);
 600 }
 601
 602 static int venc_panel_suspend(struct omap_dss_device *dssdev)
 603 {
 604         venc_panel_disable(dssdev);
 605         return 0;
 606 }
 607
 608 static int venc_panel_resume(struct omap_dss_device *dssdev)
 609 {
 610         return venc_panel_enable(dssdev);
 611 }
 612
 613 static void venc_set_timings(struct omap_dss_device *dssdev,
 614                         struct omap_video_timings *timings)
 615 {
 616         DSSDBG("venc_set_timings\n");
 617
 618         /* Reset WSS data when the TV standard changes. */
 619         if (memcmp(&dssdev->panel.timings, timings, sizeof(*timings)))
 620                 venc.wss_data = 0;
 621
 622         dssdev->panel.timings = *timings;
 623         if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
 624                 /* turn the venc off and on to get new timings to use */
 625                 venc_panel_disable(dssdev);
 626                 venc_panel_enable(dssdev);
 627         }
 628 }
 629
 630 static int venc_check_timings(struct omap_dss_device *dssdev,
 631                         struct omap_video_timings *timings)
 632 {
 633         DSSDBG("venc_check_timings\n");
 634
 635         if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0)
 636                 return 0;
 637
 638         if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0)
 639                 return 0;
 640
 641         return -EINVAL;
 642 }
 643
 644 static u32 venc_get_wss(struct omap_dss_device *dssdev)
 645 {
 646         /* Invert due to VENC_L21_WC_CTL:INV=1 */
 647         return (venc.wss_data >> 8) ^ 0xfffff;
 648 }
 649
 650 static int venc_set_wss(struct omap_dss_device *dssdev, u32 wss)
 651 {
 652         const struct venc_config *config;
 653         int r;
 654
 655         DSSDBG("venc_set_wss\n");
 656
 657         mutex_lock(&venc.venc_lock);
 658
 659         config = venc_timings_to_config(&dssdev->panel.timings);
 660
 661         /* Invert due to VENC_L21_WC_CTL:INV=1 */
 662         venc.wss_data = (wss ^ 0xfffff) << 8;
 663
 664         r = venc_runtime_get();
 665         if (r)
 666                 goto err;
 667
 668         venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
 669                         venc.wss_data);
 670
 671         venc_runtime_put();
 672
 673 err:
 674         mutex_unlock(&venc.venc_lock);
 675
 676         return r;
 677 }
 678
 679 static struct omap_dss_driver venc_driver = {
 680         .probe          = venc_panel_probe,
 681         .remove         = venc_panel_remove,
 682
 683         .enable         = venc_panel_enable,
 684         .disable        = venc_panel_disable,
 685         .suspend        = venc_panel_suspend,
 686         .resume         = venc_panel_resume,
 687
 688         .get_resolution = omapdss_default_get_resolution,
 689         .get_recommended_bpp = omapdss_default_get_recommended_bpp,
 690
 691         .set_timings    = venc_set_timings,
 692         .check_timings  = venc_check_timings,
 693
 694         .get_wss        = venc_get_wss,
 695         .set_wss        = venc_set_wss,
 696
 697         .driver         = {
 698                 .name   = "venc",
 699                 .owner  = THIS_MODULE,
 700         },
 701 };
 702 /* driver end */
 703
 704 int venc_init_display(struct omap_dss_device *dssdev)
 705 {
 706         DSSDBG("init_display\n");
 707
 708         if (venc.vdda_dac_reg == NULL) {
 709                 struct regulator *vdda_dac;
 710
 711                 vdda_dac = regulator_get(&venc.pdev->dev, "vdda_dac");
 712
 713                 if (IS_ERR(vdda_dac)) {
 714                         DSSERR("can't get VDDA_DAC regulator\n");
 715                         return PTR_ERR(vdda_dac);
 716                 }
 717
 718                 venc.vdda_dac_reg = vdda_dac;
 719         }
 720
 721         return 0;
 722 }
 723
 724 void venc_dump_regs(struct seq_file *s)
 725 {
 726 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(r))
 727
 728         if (cpu_is_omap44xx()) {
 729                 seq_printf(s, "VENC currently disabled on OMAP44xx\n");
 730                 return;
 731         }
 732
 733         if (venc_runtime_get())
 734                 return;
 735
 736         DUMPREG(VENC_F_CONTROL);
 737         DUMPREG(VENC_VIDOUT_CTRL);
 738         DUMPREG(VENC_SYNC_CTRL);
 739         DUMPREG(VENC_LLEN);
 740         DUMPREG(VENC_FLENS);
 741         DUMPREG(VENC_HFLTR_CTRL);
 742         DUMPREG(VENC_CC_CARR_WSS_CARR);
 743         DUMPREG(VENC_C_PHASE);
 744         DUMPREG(VENC_GAIN_U);
 745         DUMPREG(VENC_GAIN_V);
 746         DUMPREG(VENC_GAIN_Y);
 747         DUMPREG(VENC_BLACK_LEVEL);
 748         DUMPREG(VENC_BLANK_LEVEL);
 749         DUMPREG(VENC_X_COLOR);
 750         DUMPREG(VENC_M_CONTROL);
 751         DUMPREG(VENC_BSTAMP_WSS_DATA);
 752         DUMPREG(VENC_S_CARR);
 753         DUMPREG(VENC_LINE21);
 754         DUMPREG(VENC_LN_SEL);
 755         DUMPREG(VENC_L21__WC_CTL);
 756         DUMPREG(VENC_HTRIGGER_VTRIGGER);
 757         DUMPREG(VENC_SAVID__EAVID);
 758         DUMPREG(VENC_FLEN__FAL);
 759         DUMPREG(VENC_LAL__PHASE_RESET);
 760         DUMPREG(VENC_HS_INT_START_STOP_X);
 761         DUMPREG(VENC_HS_EXT_START_STOP_X);
 762         DUMPREG(VENC_VS_INT_START_X);
 763         DUMPREG(VENC_VS_INT_STOP_X__VS_INT_START_Y);
 764         DUMPREG(VENC_VS_INT_STOP_Y__VS_EXT_START_X);
 765         DUMPREG(VENC_VS_EXT_STOP_X__VS_EXT_START_Y);
 766         DUMPREG(VENC_VS_EXT_STOP_Y);
 767         DUMPREG(VENC_AVID_START_STOP_X);
 768         DUMPREG(VENC_AVID_START_STOP_Y);
 769         DUMPREG(VENC_FID_INT_START_X__FID_INT_START_Y);
 770         DUMPREG(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X);
 771         DUMPREG(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y);
 772         DUMPREG(VENC_TVDETGP_INT_START_STOP_X);
 773         DUMPREG(VENC_TVDETGP_INT_START_STOP_Y);
 774         DUMPREG(VENC_GEN_CTRL);
 775         DUMPREG(VENC_OUTPUT_CONTROL);
 776         DUMPREG(VENC_OUTPUT_TEST);
 777
 778         venc_runtime_put();
 779
 780 #undef DUMPREG
 781 }
 782
 783 static int venc_get_clocks(struct platform_device *pdev)
 784 {
 785         struct clk *clk;
 786
 787         if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK)) {
 788                 clk = clk_get(&pdev->dev, "tv_dac_clk");
 789                 if (IS_ERR(clk)) {
 790                         DSSERR("can't get tv_dac_clk\n");
 791                         return PTR_ERR(clk);
 792                 }
 793         } else {
 794                 clk = NULL;
 795         }
 796
 797         venc.tv_dac_clk = clk;
 798
 799         return 0;
 800 }
 801
 802 static void venc_put_clocks(void)
 803 {
 804         if (venc.tv_dac_clk)
 805                 clk_put(venc.tv_dac_clk);
 806 }
 807
 808 /* VENC HW IP initialisation */
 809 static int omap_venchw_probe(struct platform_device *pdev)
 810 {
 811         u8 rev_id;
 812         struct resource *venc_mem;
 813         int r;
 814
 815         venc.pdev = pdev;
 816
 817         mutex_init(&venc.venc_lock);
 818
 819         venc.wss_data = 0;
 820
 821         venc_mem = platform_get_resource(venc.pdev, IORESOURCE_MEM, 0);
 822         if (!venc_mem) {
 823                 DSSERR("can't get IORESOURCE_MEM VENC\n");
 824                 r = -EINVAL;
 825                 goto err_ioremap;
 826         }
 827         venc.base = ioremap(venc_mem->start, resource_size(venc_mem));
 828         if (!venc.base) {
 829                 DSSERR("can't ioremap VENC\n");
 830                 r = -ENOMEM;
 831                 goto err_ioremap;
 832         }
 833
 834         r = venc_get_clocks(pdev);
 835         if (r)
 836                 goto err_get_clk;
 837
 838         pm_runtime_enable(&pdev->dev);
 839
 840         r = venc_runtime_get();
 841         if (r)
 842                 goto err_get_venc;
 843
 844         rev_id = (u8)(venc_read_reg(VENC_REV_ID) & 0xff);
 845         dev_dbg(&pdev->dev, "OMAP VENC rev %d\n", rev_id);
 846
 847         venc_runtime_put();
 848
 849         return omap_dss_register_driver(&venc_driver);
 850
 851 err_get_venc:
 852         pm_runtime_disable(&pdev->dev);
 853         venc_put_clocks();
 854 err_get_clk:
 855         iounmap(venc.base);
 856 err_ioremap:
 857         return r;
 858 }
 859
 860 static int omap_venchw_remove(struct platform_device *pdev)
 861 {
 862         if (venc.vdda_dac_reg != NULL) {
 863                 regulator_put(venc.vdda_dac_reg);
 864                 venc.vdda_dac_reg = NULL;
 865         }
 866         omap_dss_unregister_driver(&venc_driver);
 867
 868         pm_runtime_disable(&pdev->dev);
 869         venc_put_clocks();
 870
 871         iounmap(venc.base);
 872         return 0;
 873 }
 874
 875 static int venc_runtime_suspend(struct device *dev)
 876 {
 877         if (venc.tv_dac_clk)
 878                 clk_disable(venc.tv_dac_clk);
 879
 880         dispc_runtime_put();
 881         dss_runtime_put();
 882
 883         return 0;
 884 }
 885
 886 static int venc_runtime_resume(struct device *dev)
 887 {
 888         int r;
 889
 890         r = dss_runtime_get();
 891         if (r < 0)
 892                 goto err_get_dss;
 893
 894         r = dispc_runtime_get();
 895         if (r < 0)
 896                 goto err_get_dispc;
 897
 898         if (venc.tv_dac_clk)
 899                 clk_enable(venc.tv_dac_clk);
 900
 901         return 0;
 902
 903 err_get_dispc:
 904         dss_runtime_put();
 905 err_get_dss:
 906         return r;
 907 }
 908
 909 static const struct dev_pm_ops venc_pm_ops = {
 910         .runtime_suspend = venc_runtime_suspend,
 911         .runtime_resume = venc_runtime_resume,
 912 };
 913
 914 static struct platform_driver omap_venchw_driver = {
 915         .probe          = omap_venchw_probe,
 916         .remove         = omap_venchw_remove,
 917         .driver         = {
 918                 .name   = "omapdss_venc",
 919                 .owner  = THIS_MODULE,
 920                 .pm     = &venc_pm_ops,
 921         },
 922 };
 923
 924 int venc_init_platform_driver(void)
 925 {
 926         if (cpu_is_omap44xx())
 927                 return 0;
 928
 929         return platform_driver_register(&omap_venchw_driver);
 930 }
 931
 932 void venc_uninit_platform_driver(void)
 933 {
 934         if (cpu_is_omap44xx())
 935                 return;
 936
 937         return platform_driver_unregister(&omap_venchw_driver);
 938 }