drivers/gpu/drm/sti/sti_tvout.c

   1 /*
   2  * Copyright (C) STMicroelectronics SA 2014
   3  * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
   4  *          Vincent Abriou <vincent.abriou@st.com>
   5  *          for STMicroelectronics.
   6  * License terms:  GNU General Public License (GPL), version 2
   7  */
   8
   9 #include <linux/clk.h>
  10 #include <linux/component.h>
  11 #include <linux/module.h>
  12 #include <linux/of_platform.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/reset.h>
  15
  16 #include <drm/drmP.h>
  17 #include <drm/drm_crtc_helper.h>
  18
  19 #include "sti_drm_crtc.h"
  20
  21 /* glue registers */
  22 #define TVO_CSC_MAIN_M0                  0x000
  23 #define TVO_CSC_MAIN_M1                  0x004
  24 #define TVO_CSC_MAIN_M2                  0x008
  25 #define TVO_CSC_MAIN_M3                  0x00c
  26 #define TVO_CSC_MAIN_M4                  0x010
  27 #define TVO_CSC_MAIN_M5                  0x014
  28 #define TVO_CSC_MAIN_M6                  0x018
  29 #define TVO_CSC_MAIN_M7                  0x01c
  30 #define TVO_MAIN_IN_VID_FORMAT           0x030
  31 #define TVO_CSC_AUX_M0                   0x100
  32 #define TVO_CSC_AUX_M1                   0x104
  33 #define TVO_CSC_AUX_M2                   0x108
  34 #define TVO_CSC_AUX_M3                   0x10c
  35 #define TVO_CSC_AUX_M4                   0x110
  36 #define TVO_CSC_AUX_M5                   0x114
  37 #define TVO_CSC_AUX_M6                   0x118
  38 #define TVO_CSC_AUX_M7                   0x11c
  39 #define TVO_AUX_IN_VID_FORMAT            0x130
  40 #define TVO_VIP_HDF                      0x400
  41 #define TVO_HD_SYNC_SEL                  0x418
  42 #define TVO_HD_DAC_CFG_OFF               0x420
  43 #define TVO_VIP_HDMI                     0x500
  44 #define TVO_HDMI_FORCE_COLOR_0           0x504
  45 #define TVO_HDMI_FORCE_COLOR_1           0x508
  46 #define TVO_HDMI_CLIP_VALUE_B_CB         0x50c
  47 #define TVO_HDMI_CLIP_VALUE_Y_G          0x510
  48 #define TVO_HDMI_CLIP_VALUE_R_CR         0x514
  49 #define TVO_HDMI_SYNC_SEL                0x518
  50 #define TVO_HDMI_DFV_OBS                 0x540
  51 #define TVO_VIP_DVO                      0x600
  52 #define TVO_DVO_SYNC_SEL                 0x618
  53 #define TVO_DVO_CONFIG                   0x620
  54
  55 #define TVO_IN_FMT_SIGNED                BIT(0)
  56 #define TVO_SYNC_EXT                     BIT(4)
  57
  58 #define TVO_VIP_REORDER_R_SHIFT          24
  59 #define TVO_VIP_REORDER_G_SHIFT          20
  60 #define TVO_VIP_REORDER_B_SHIFT          16
  61 #define TVO_VIP_REORDER_MASK             0x3
  62 #define TVO_VIP_REORDER_Y_G_SEL          0
  63 #define TVO_VIP_REORDER_CB_B_SEL         1
  64 #define TVO_VIP_REORDER_CR_R_SEL         2
  65
  66 #define TVO_VIP_CLIP_SHIFT               8
  67 #define TVO_VIP_CLIP_MASK                0x7
  68 #define TVO_VIP_CLIP_DISABLED            0
  69 #define TVO_VIP_CLIP_EAV_SAV             1
  70 #define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2
  71 #define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3
  72 #define TVO_VIP_CLIP_PROG_RANGE          4
  73
  74 #define TVO_VIP_RND_SHIFT                4
  75 #define TVO_VIP_RND_MASK                 0x3
  76 #define TVO_VIP_RND_8BIT_ROUNDED         0
  77 #define TVO_VIP_RND_10BIT_ROUNDED        1
  78 #define TVO_VIP_RND_12BIT_ROUNDED        2
  79
  80 #define TVO_VIP_SEL_INPUT_MASK           0xf
  81 #define TVO_VIP_SEL_INPUT_MAIN           0x0
  82 #define TVO_VIP_SEL_INPUT_AUX            0x8
  83 #define TVO_VIP_SEL_INPUT_FORCE_COLOR    0xf
  84 #define TVO_VIP_SEL_INPUT_BYPASS_MASK    0x1
  85 #define TVO_VIP_SEL_INPUT_BYPASSED       1
  86
  87 #define TVO_SYNC_MAIN_VTG_SET_REF        0x00
  88 #define TVO_SYNC_MAIN_VTG_SET_1          0x01
  89 #define TVO_SYNC_MAIN_VTG_SET_2          0x02
  90 #define TVO_SYNC_MAIN_VTG_SET_3          0x03
  91 #define TVO_SYNC_MAIN_VTG_SET_4          0x04
  92 #define TVO_SYNC_MAIN_VTG_SET_5          0x05
  93 #define TVO_SYNC_MAIN_VTG_SET_6          0x06
  94 #define TVO_SYNC_AUX_VTG_SET_REF         0x10
  95 #define TVO_SYNC_AUX_VTG_SET_1           0x11
  96 #define TVO_SYNC_AUX_VTG_SET_2           0x12
  97 #define TVO_SYNC_AUX_VTG_SET_3           0x13
  98 #define TVO_SYNC_AUX_VTG_SET_4           0x14
  99 #define TVO_SYNC_AUX_VTG_SET_5           0x15
 100 #define TVO_SYNC_AUX_VTG_SET_6           0x16
 101
 102 #define TVO_SYNC_HD_DCS_SHIFT            8
 103
 104 #define TVO_SYNC_DVO_PAD_HSYNC_SHIFT     8
 105 #define TVO_SYNC_DVO_PAD_VSYNC_SHIFT     16
 106
 107 #define ENCODER_CRTC_MASK                (BIT(0) | BIT(1))
 108
 109 /* enum listing the supported output data format */
 110 enum sti_tvout_video_out_type {
 111         STI_TVOUT_VIDEO_OUT_RGB,
 112         STI_TVOUT_VIDEO_OUT_YUV,
 113 };
 114
 115 struct sti_tvout {
 116         struct device *dev;
 117         struct drm_device *drm_dev;
 118         void __iomem *regs;
 119         struct reset_control *reset;
 120         struct drm_encoder *hdmi;
 121         struct drm_encoder *hda;
 122         struct drm_encoder *dvo;
 123 };
 124
 125 struct sti_tvout_encoder {
 126         struct drm_encoder encoder;
 127         struct sti_tvout *tvout;
 128 };
 129
 130 #define to_sti_tvout_encoder(x) \
 131         container_of(x, struct sti_tvout_encoder, encoder)
 132
 133 #define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout
 134
 135 /* preformatter conversion matrix */
 136 static const u32 rgb_to_ycbcr_601[8] = {
 137         0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D,
 138         0x0000082E, 0x00002000, 0x00002000, 0x00000000
 139 };
 140
 141 /* 709 RGB to YCbCr */
 142 static const u32 rgb_to_ycbcr_709[8] = {
 143         0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20,
 144         0x0000082F, 0x00002000, 0x00002000, 0x00000000
 145 };
 146
 147 static u32 tvout_read(struct sti_tvout *tvout, int offset)
 148 {
 149         return readl(tvout->regs + offset);
 150 }
 151
 152 static void tvout_write(struct sti_tvout *tvout, u32 val, int offset)
 153 {
 154         writel(val, tvout->regs + offset);
 155 }
 156
 157 /**
 158  * Set the clipping mode of a VIP
 159  *
 160  * @tvout: tvout structure
 161  * @reg: register to set
 162  * @cr_r:
 163  * @y_g:
 164  * @cb_b:
 165  */
 166 static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg,
 167                                       u32 cr_r, u32 y_g, u32 cb_b)
 168 {
 169         u32 val = tvout_read(tvout, reg);
 170
 171         val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT);
 172         val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT);
 173         val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT);
 174         val |= cr_r << TVO_VIP_REORDER_R_SHIFT;
 175         val |= y_g << TVO_VIP_REORDER_G_SHIFT;
 176         val |= cb_b << TVO_VIP_REORDER_B_SHIFT;
 177
 178         tvout_write(tvout, val, reg);
 179 }
 180
 181 /**
 182  * Set the clipping mode of a VIP
 183  *
 184  * @tvout: tvout structure
 185  * @reg: register to set
 186  * @range: clipping range
 187  */
 188 static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range)
 189 {
 190         u32 val = tvout_read(tvout, reg);
 191
 192         val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
 193         val |= range << TVO_VIP_CLIP_SHIFT;
 194         tvout_write(tvout, val, reg);
 195 }
 196
 197 /**
 198  * Set the rounded value of a VIP
 199  *
 200  * @tvout: tvout structure
 201  * @reg: register to set
 202  * @rnd: rounded val per component
 203  */
 204 static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd)
 205 {
 206         u32 val = tvout_read(tvout, reg);
 207
 208         val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
 209         val |= rnd << TVO_VIP_RND_SHIFT;
 210         tvout_write(tvout, val, reg);
 211 }
 212
 213 /**
 214  * Select the VIP input
 215  *
 216  * @tvout: tvout structure
 217  * @reg: register to set
 218  * @main_path: main or auxiliary path
 219  * @sel_input_logic_inverted: need to invert the logic
 220  * @sel_input: selected_input (main/aux + conv)
 221  */
 222 static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
 223                                     int reg,
 224                                     bool main_path,
 225                                     bool sel_input_logic_inverted,
 226                                     enum sti_tvout_video_out_type video_out)
 227 {
 228         u32 sel_input;
 229         u32 val = tvout_read(tvout, reg);
 230
 231         if (main_path)
 232                 sel_input = TVO_VIP_SEL_INPUT_MAIN;
 233         else
 234                 sel_input = TVO_VIP_SEL_INPUT_AUX;
 235
 236         switch (video_out) {
 237         case STI_TVOUT_VIDEO_OUT_RGB:
 238                 sel_input |= TVO_VIP_SEL_INPUT_BYPASSED;
 239                 break;
 240         case STI_TVOUT_VIDEO_OUT_YUV:
 241                 sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED;
 242                 break;
 243         }
 244
 245         /* on stih407 chip the sel_input bypass mode logic is inverted */
 246         if (sel_input_logic_inverted)
 247                 sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK;
 248
 249         val &= ~TVO_VIP_SEL_INPUT_MASK;
 250         val |= sel_input;
 251         tvout_write(tvout, val, reg);
 252 }
 253
 254 /**
 255  * Select the input video signed or unsigned
 256  *
 257  * @tvout: tvout structure
 258  * @reg: register to set
 259  * @in_vid_signed: used video input format
 260  */
 261 static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout,
 262                 int reg, u32 in_vid_fmt)
 263 {
 264         u32 val = tvout_read(tvout, reg);
 265
 266         val &= ~TVO_IN_FMT_SIGNED;
 267         val |= in_vid_fmt;
 268         tvout_write(tvout, val, reg);
 269 }
 270
 271 /**
 272  * Start VIP block for DVO output
 273  *
 274  * @tvout: pointer on tvout structure
 275  * @main_path: true if main path has to be used in the vip configuration
 276  *        else aux path is used.
 277  */
 278 static void tvout_dvo_start(struct sti_tvout *tvout, bool main_path)
 279 {
 280         struct device_node *node = tvout->dev->of_node;
 281         bool sel_input_logic_inverted = false;
 282         u32 tvo_in_vid_format;
 283         int val;
 284
 285         dev_dbg(tvout->dev, "%s\n", __func__);
 286
 287         if (main_path) {
 288                 DRM_DEBUG_DRIVER("main vip for DVO\n");
 289                 /* Select the input sync for dvo = VTG set 4 */
 290                 val  = TVO_SYNC_MAIN_VTG_SET_4 << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
 291                 val |= TVO_SYNC_MAIN_VTG_SET_4 << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
 292                 val |= TVO_SYNC_MAIN_VTG_SET_4;
 293                 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
 294                 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
 295         } else {
 296                 DRM_DEBUG_DRIVER("aux vip for DVO\n");
 297                 /* Select the input sync for dvo = VTG set 4 */
 298                 val  = TVO_SYNC_AUX_VTG_SET_4 << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
 299                 val |= TVO_SYNC_AUX_VTG_SET_4 << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
 300                 val |= TVO_SYNC_AUX_VTG_SET_4;
 301                 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
 302                 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
 303         }
 304
 305         /* Set color channel order */
 306         tvout_vip_set_color_order(tvout, TVO_VIP_DVO,
 307                                   TVO_VIP_REORDER_CR_R_SEL,
 308                                   TVO_VIP_REORDER_Y_G_SEL,
 309                                   TVO_VIP_REORDER_CB_B_SEL);
 310
 311         /* Set clipping mode (Limited range RGB/Y) */
 312         tvout_vip_set_clip_mode(tvout, TVO_VIP_DVO,
 313                                 TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y);
 314
 315         /* Set round mode (rounded to 8-bit per component) */
 316         tvout_vip_set_rnd(tvout, TVO_VIP_DVO, TVO_VIP_RND_8BIT_ROUNDED);
 317
 318         if (of_device_is_compatible(node, "st,stih407-tvout")) {
 319                 /* Set input video format */
 320                 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format,
 321                                          TVO_IN_FMT_SIGNED);
 322                 sel_input_logic_inverted = true;
 323         }
 324
 325         /* Input selection */
 326         tvout_vip_set_sel_input(tvout, TVO_VIP_DVO, main_path,
 327                                 sel_input_logic_inverted,
 328                                 STI_TVOUT_VIDEO_OUT_RGB);
 329 }
 330
 331 /**
 332  * Start VIP block for HDMI output
 333  *
 334  * @tvout: pointer on tvout structure
 335  * @main_path: true if main path has to be used in the vip configuration
 336  *        else aux path is used.
 337  */
 338 static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path)
 339 {
 340         struct device_node *node = tvout->dev->of_node;
 341         bool sel_input_logic_inverted = false;
 342         u32 tvo_in_vid_format;
 343
 344         dev_dbg(tvout->dev, "%s\n", __func__);
 345
 346         if (main_path) {
 347                 DRM_DEBUG_DRIVER("main vip for hdmi\n");
 348                 /* select the input sync for hdmi = VTG set 1 */
 349                 tvout_write(tvout, TVO_SYNC_MAIN_VTG_SET_1, TVO_HDMI_SYNC_SEL);
 350                 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
 351         } else {
 352                 DRM_DEBUG_DRIVER("aux vip for hdmi\n");
 353                 /* select the input sync for hdmi = VTG set 1 */
 354                 tvout_write(tvout, TVO_SYNC_AUX_VTG_SET_1, TVO_HDMI_SYNC_SEL);
 355                 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
 356         }
 357
 358         /* set color channel order */
 359         tvout_vip_set_color_order(tvout, TVO_VIP_HDMI,
 360                                   TVO_VIP_REORDER_CR_R_SEL,
 361                                   TVO_VIP_REORDER_Y_G_SEL,
 362                                   TVO_VIP_REORDER_CB_B_SEL);
 363
 364         /* set clipping mode (Limited range RGB/Y) */
 365         tvout_vip_set_clip_mode(tvout, TVO_VIP_HDMI,
 366                         TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y);
 367
 368         /* set round mode (rounded to 8-bit per component) */
 369         tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, TVO_VIP_RND_8BIT_ROUNDED);
 370
 371         if (of_device_is_compatible(node, "st,stih407-tvout")) {
 372                 /* set input video format */
 373                 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format,
 374                                         TVO_IN_FMT_SIGNED);
 375                 sel_input_logic_inverted = true;
 376         }
 377
 378         /* input selection */
 379         tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, main_path,
 380                         sel_input_logic_inverted, STI_TVOUT_VIDEO_OUT_RGB);
 381 }
 382
 383 /**
 384  * Start HDF VIP and HD DAC
 385  *
 386  * @tvout: pointer on tvout structure
 387  * @main_path: true if main path has to be used in the vip configuration
 388  *        else aux path is used.
 389  */
 390 static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
 391 {
 392         struct device_node *node = tvout->dev->of_node;
 393         bool sel_input_logic_inverted = false;
 394         u32 tvo_in_vid_format;
 395         int val;
 396
 397         dev_dbg(tvout->dev, "%s\n", __func__);
 398
 399         if (main_path) {
 400                 val = TVO_SYNC_MAIN_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT;
 401                 val |= TVO_SYNC_MAIN_VTG_SET_3;
 402                 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
 403                 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
 404         } else {
 405                 val = TVO_SYNC_AUX_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT;
 406                 val |= TVO_SYNC_AUX_VTG_SET_3;
 407                 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
 408                 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
 409         }
 410
 411         /* set color channel order */
 412         tvout_vip_set_color_order(tvout, TVO_VIP_HDF,
 413                                   TVO_VIP_REORDER_CR_R_SEL,
 414                                   TVO_VIP_REORDER_Y_G_SEL,
 415                                   TVO_VIP_REORDER_CB_B_SEL);
 416
 417         /* set clipping mode (EAV/SAV clipping) */
 418         tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_EAV_SAV);
 419
 420         /* set round mode (rounded to 10-bit per component) */
 421         tvout_vip_set_rnd(tvout, TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED);
 422
 423         if (of_device_is_compatible(node, "st,stih407-tvout")) {
 424                 /* set input video format */
 425                 tvout_vip_set_in_vid_fmt(tvout,
 426                         tvo_in_vid_format, TVO_IN_FMT_SIGNED);
 427                 sel_input_logic_inverted = true;
 428         }
 429
 430         /* Input selection */
 431         tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path,
 432                                 sel_input_logic_inverted,
 433                                 STI_TVOUT_VIDEO_OUT_YUV);
 434
 435         /* power up HD DAC */
 436         tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
 437 }
 438
 439 static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
 440 {
 441 }
 442
 443 static bool sti_tvout_encoder_mode_fixup(struct drm_encoder *encoder,
 444                                        const struct drm_display_mode *mode,
 445                                        struct drm_display_mode *adjusted_mode)
 446 {
 447         return true;
 448 }
 449
 450 static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder,
 451                                        struct drm_display_mode *mode,
 452                                        struct drm_display_mode *adjusted_mode)
 453 {
 454 }
 455
 456 static void sti_tvout_encoder_prepare(struct drm_encoder *encoder)
 457 {
 458 }
 459
 460 static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)
 461 {
 462         struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
 463
 464         drm_encoder_cleanup(encoder);
 465         kfree(sti_encoder);
 466 }
 467
 468 static const struct drm_encoder_funcs sti_tvout_encoder_funcs = {
 469         .destroy = sti_tvout_encoder_destroy,
 470 };
 471
 472 static void sti_dvo_encoder_commit(struct drm_encoder *encoder)
 473 {
 474         struct sti_tvout *tvout = to_sti_tvout(encoder);
 475
 476         tvout_dvo_start(tvout, sti_drm_crtc_is_main(encoder->crtc));
 477 }
 478
 479 static void sti_dvo_encoder_disable(struct drm_encoder *encoder)
 480 {
 481         struct sti_tvout *tvout = to_sti_tvout(encoder);
 482
 483         /* Reset VIP register */
 484         tvout_write(tvout, 0x0, TVO_VIP_DVO);
 485 }
 486
 487 static const struct drm_encoder_helper_funcs sti_dvo_encoder_helper_funcs = {
 488         .dpms = sti_tvout_encoder_dpms,
 489         .mode_fixup = sti_tvout_encoder_mode_fixup,
 490         .mode_set = sti_tvout_encoder_mode_set,
 491         .prepare = sti_tvout_encoder_prepare,
 492         .commit = sti_dvo_encoder_commit,
 493         .disable = sti_dvo_encoder_disable,
 494 };
 495
 496 static struct drm_encoder *
 497 sti_tvout_create_dvo_encoder(struct drm_device *dev,
 498                              struct sti_tvout *tvout)
 499 {
 500         struct sti_tvout_encoder *encoder;
 501         struct drm_encoder *drm_encoder;
 502
 503         encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
 504         if (!encoder)
 505                 return NULL;
 506
 507         encoder->tvout = tvout;
 508
 509         drm_encoder = (struct drm_encoder *)encoder;
 510
 511         drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
 512         drm_encoder->possible_clones = 1 << 0;
 513
 514         drm_encoder_init(dev, drm_encoder,
 515                          &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_LVDS);
 516
 517         drm_encoder_helper_add(drm_encoder, &sti_dvo_encoder_helper_funcs);
 518
 519         return drm_encoder;
 520 }
 521
 522 static void sti_hda_encoder_commit(struct drm_encoder *encoder)
 523 {
 524         struct sti_tvout *tvout = to_sti_tvout(encoder);
 525
 526         tvout_hda_start(tvout, sti_drm_crtc_is_main(encoder->crtc));
 527 }
 528
 529 static void sti_hda_encoder_disable(struct drm_encoder *encoder)
 530 {
 531         struct sti_tvout *tvout = to_sti_tvout(encoder);
 532
 533         /* reset VIP register */
 534         tvout_write(tvout, 0x0, TVO_VIP_HDF);
 535
 536         /* power down HD DAC */
 537         tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF);
 538 }
 539
 540 static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {
 541         .dpms = sti_tvout_encoder_dpms,
 542         .mode_fixup = sti_tvout_encoder_mode_fixup,
 543         .mode_set = sti_tvout_encoder_mode_set,
 544         .prepare = sti_tvout_encoder_prepare,
 545         .commit = sti_hda_encoder_commit,
 546         .disable = sti_hda_encoder_disable,
 547 };
 548
 549 static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev,
 550                 struct sti_tvout *tvout)
 551 {
 552         struct sti_tvout_encoder *encoder;
 553         struct drm_encoder *drm_encoder;
 554
 555         encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
 556         if (!encoder)
 557                 return NULL;
 558
 559         encoder->tvout = tvout;
 560
 561         drm_encoder = (struct drm_encoder *) encoder;
 562
 563         drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
 564         drm_encoder->possible_clones = 1 << 0;
 565
 566         drm_encoder_init(dev, drm_encoder,
 567                         &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC);
 568
 569         drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs);
 570
 571         return drm_encoder;
 572 }
 573
 574 static void sti_hdmi_encoder_commit(struct drm_encoder *encoder)
 575 {
 576         struct sti_tvout *tvout = to_sti_tvout(encoder);
 577
 578         tvout_hdmi_start(tvout, sti_drm_crtc_is_main(encoder->crtc));
 579 }
 580
 581 static void sti_hdmi_encoder_disable(struct drm_encoder *encoder)
 582 {
 583         struct sti_tvout *tvout = to_sti_tvout(encoder);
 584
 585         /* reset VIP register */
 586         tvout_write(tvout, 0x0, TVO_VIP_HDMI);
 587 }
 588
 589 static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {
 590         .dpms = sti_tvout_encoder_dpms,
 591         .mode_fixup = sti_tvout_encoder_mode_fixup,
 592         .mode_set = sti_tvout_encoder_mode_set,
 593         .prepare = sti_tvout_encoder_prepare,
 594         .commit = sti_hdmi_encoder_commit,
 595         .disable = sti_hdmi_encoder_disable,
 596 };
 597
 598 static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev,
 599                 struct sti_tvout *tvout)
 600 {
 601         struct sti_tvout_encoder *encoder;
 602         struct drm_encoder *drm_encoder;
 603
 604         encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
 605         if (!encoder)
 606                 return NULL;
 607
 608         encoder->tvout = tvout;
 609
 610         drm_encoder = (struct drm_encoder *) encoder;
 611
 612         drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
 613         drm_encoder->possible_clones = 1 << 1;
 614
 615         drm_encoder_init(dev, drm_encoder,
 616                         &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS);
 617
 618         drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs);
 619
 620         return drm_encoder;
 621 }
 622
 623 static void sti_tvout_create_encoders(struct drm_device *dev,
 624                 struct sti_tvout *tvout)
 625 {
 626         tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout);
 627         tvout->hda = sti_tvout_create_hda_encoder(dev, tvout);
 628         tvout->dvo = sti_tvout_create_dvo_encoder(dev, tvout);
 629 }
 630
 631 static void sti_tvout_destroy_encoders(struct sti_tvout *tvout)
 632 {
 633         if (tvout->hdmi)
 634                 drm_encoder_cleanup(tvout->hdmi);
 635         tvout->hdmi = NULL;
 636
 637         if (tvout->hda)
 638                 drm_encoder_cleanup(tvout->hda);
 639         tvout->hda = NULL;
 640 }
 641
 642 static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
 643 {
 644         struct sti_tvout *tvout = dev_get_drvdata(dev);
 645         struct drm_device *drm_dev = data;
 646         unsigned int i;
 647         int ret;
 648
 649         tvout->drm_dev = drm_dev;
 650
 651         /* set preformatter matrix */
 652         for (i = 0; i < 8; i++) {
 653                 tvout_write(tvout, rgb_to_ycbcr_601[i],
 654                         TVO_CSC_MAIN_M0 + (i * 4));
 655                 tvout_write(tvout, rgb_to_ycbcr_601[i],
 656                         TVO_CSC_AUX_M0 + (i * 4));
 657         }
 658
 659         sti_tvout_create_encoders(drm_dev, tvout);
 660
 661         ret = component_bind_all(dev, drm_dev);
 662         if (ret)
 663                 sti_tvout_destroy_encoders(tvout);
 664
 665         return ret;
 666 }
 667
 668 static void sti_tvout_unbind(struct device *dev, struct device *master,
 669         void *data)
 670 {
 671         /* do nothing */
 672 }
 673
 674 static const struct component_ops sti_tvout_ops = {
 675         .bind   = sti_tvout_bind,
 676         .unbind = sti_tvout_unbind,
 677 };
 678
 679 static int compare_of(struct device *dev, void *data)
 680 {
 681         return dev->of_node == data;
 682 }
 683
 684 static int sti_tvout_master_bind(struct device *dev)
 685 {
 686         return 0;
 687 }
 688
 689 static void sti_tvout_master_unbind(struct device *dev)
 690 {
 691         /* do nothing */
 692 }
 693
 694 static const struct component_master_ops sti_tvout_master_ops = {
 695         .bind = sti_tvout_master_bind,
 696         .unbind = sti_tvout_master_unbind,
 697 };
 698
 699 static int sti_tvout_probe(struct platform_device *pdev)
 700 {
 701         struct device *dev = &pdev->dev;
 702         struct device_node *node = dev->of_node;
 703         struct sti_tvout *tvout;
 704         struct resource *res;
 705         struct device_node *child_np;
 706         struct component_match *match = NULL;
 707
 708         DRM_INFO("%s\n", __func__);
 709
 710         if (!node)
 711                 return -ENODEV;
 712
 713         tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL);
 714         if (!tvout)
 715                 return -ENOMEM;
 716
 717         tvout->dev = dev;
 718
 719         /* get Memory ressources */
 720         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg");
 721         if (!res) {
 722                 DRM_ERROR("Invalid glue resource\n");
 723                 return -ENOMEM;
 724         }
 725         tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
 726         if (!tvout->regs)
 727                 return -ENOMEM;
 728
 729         /* get reset resources */
 730         tvout->reset = devm_reset_control_get(dev, "tvout");
 731         /* take tvout out of reset */
 732         if (!IS_ERR(tvout->reset))
 733                 reset_control_deassert(tvout->reset);
 734
 735         platform_set_drvdata(pdev, tvout);
 736
 737         of_platform_populate(node, NULL, NULL, dev);
 738
 739         child_np = of_get_next_available_child(node, NULL);
 740
 741         while (child_np) {
 742                 component_match_add(dev, &match, compare_of, child_np);
 743                 of_node_put(child_np);
 744                 child_np = of_get_next_available_child(node, child_np);
 745         }
 746
 747         component_master_add_with_match(dev, &sti_tvout_master_ops, match);
 748
 749         return component_add(dev, &sti_tvout_ops);
 750 }
 751
 752 static int sti_tvout_remove(struct platform_device *pdev)
 753 {
 754         component_master_del(&pdev->dev, &sti_tvout_master_ops);
 755         component_del(&pdev->dev, &sti_tvout_ops);
 756         return 0;
 757 }
 758
 759 static const struct of_device_id tvout_of_match[] = {
 760         { .compatible = "st,stih416-tvout", },
 761         { .compatible = "st,stih407-tvout", },
 762         { /* end node */ }
 763 };
 764 MODULE_DEVICE_TABLE(of, tvout_of_match);
 765
 766 struct platform_driver sti_tvout_driver = {
 767         .driver = {
 768                 .name = "sti-tvout",
 769                 .owner = THIS_MODULE,
 770                 .of_match_table = tvout_of_match,
 771         },
 772         .probe = sti_tvout_probe,
 773         .remove = sti_tvout_remove,
 774 };
 775
 776 module_platform_driver(sti_tvout_driver);
 777
 778 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
 779 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
 780 MODULE_LICENSE("GPL");