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 #include <linux/seq_file.h>
  16
  17 #include <drm/drmP.h>
  18 #include <drm/drm_crtc_helper.h>
  19
  20 #include "sti_crtc.h"
  21 #include "sti_vtg.h"
  22
  23 /* glue registers */
  24 #define TVO_CSC_MAIN_M0                  0x000
  25 #define TVO_CSC_MAIN_M1                  0x004
  26 #define TVO_CSC_MAIN_M2                  0x008
  27 #define TVO_CSC_MAIN_M3                  0x00c
  28 #define TVO_CSC_MAIN_M4                  0x010
  29 #define TVO_CSC_MAIN_M5                  0x014
  30 #define TVO_CSC_MAIN_M6                  0x018
  31 #define TVO_CSC_MAIN_M7                  0x01c
  32 #define TVO_MAIN_IN_VID_FORMAT           0x030
  33 #define TVO_CSC_AUX_M0                   0x100
  34 #define TVO_CSC_AUX_M1                   0x104
  35 #define TVO_CSC_AUX_M2                   0x108
  36 #define TVO_CSC_AUX_M3                   0x10c
  37 #define TVO_CSC_AUX_M4                   0x110
  38 #define TVO_CSC_AUX_M5                   0x114
  39 #define TVO_CSC_AUX_M6                   0x118
  40 #define TVO_CSC_AUX_M7                   0x11c
  41 #define TVO_AUX_IN_VID_FORMAT            0x130
  42 #define TVO_VIP_HDF                      0x400
  43 #define TVO_HD_SYNC_SEL                  0x418
  44 #define TVO_HD_DAC_CFG_OFF               0x420
  45 #define TVO_VIP_HDMI                     0x500
  46 #define TVO_HDMI_FORCE_COLOR_0           0x504
  47 #define TVO_HDMI_FORCE_COLOR_1           0x508
  48 #define TVO_HDMI_CLIP_VALUE_B_CB         0x50c
  49 #define TVO_HDMI_CLIP_VALUE_Y_G          0x510
  50 #define TVO_HDMI_CLIP_VALUE_R_CR         0x514
  51 #define TVO_HDMI_SYNC_SEL                0x518
  52 #define TVO_HDMI_DFV_OBS                 0x540
  53 #define TVO_VIP_DVO                      0x600
  54 #define TVO_DVO_SYNC_SEL                 0x618
  55 #define TVO_DVO_CONFIG                   0x620
  56
  57 #define TVO_IN_FMT_SIGNED                BIT(0)
  58 #define TVO_SYNC_EXT                     BIT(4)
  59
  60 #define TVO_VIP_REORDER_R_SHIFT          24
  61 #define TVO_VIP_REORDER_G_SHIFT          20
  62 #define TVO_VIP_REORDER_B_SHIFT          16
  63 #define TVO_VIP_REORDER_MASK             0x3
  64 #define TVO_VIP_REORDER_Y_G_SEL          0
  65 #define TVO_VIP_REORDER_CB_B_SEL         1
  66 #define TVO_VIP_REORDER_CR_R_SEL         2
  67
  68 #define TVO_VIP_CLIP_SHIFT               8
  69 #define TVO_VIP_CLIP_MASK                0x7
  70 #define TVO_VIP_CLIP_DISABLED            0
  71 #define TVO_VIP_CLIP_EAV_SAV             1
  72 #define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2
  73 #define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3
  74 #define TVO_VIP_CLIP_PROG_RANGE          4
  75
  76 #define TVO_VIP_RND_SHIFT                4
  77 #define TVO_VIP_RND_MASK                 0x3
  78 #define TVO_VIP_RND_8BIT_ROUNDED         0
  79 #define TVO_VIP_RND_10BIT_ROUNDED        1
  80 #define TVO_VIP_RND_12BIT_ROUNDED        2
  81
  82 #define TVO_VIP_SEL_INPUT_MASK           0xf
  83 #define TVO_VIP_SEL_INPUT_MAIN           0x0
  84 #define TVO_VIP_SEL_INPUT_AUX            0x8
  85 #define TVO_VIP_SEL_INPUT_FORCE_COLOR    0xf
  86 #define TVO_VIP_SEL_INPUT_BYPASS_MASK    0x1
  87 #define TVO_VIP_SEL_INPUT_BYPASSED       1
  88
  89 #define TVO_SYNC_MAIN_VTG_SET_REF        0x00
  90 #define TVO_SYNC_AUX_VTG_SET_REF         0x10
  91
  92 #define TVO_SYNC_HD_DCS_SHIFT            8
  93
  94 #define TVO_SYNC_DVO_PAD_HSYNC_SHIFT     8
  95 #define TVO_SYNC_DVO_PAD_VSYNC_SHIFT     16
  96
  97 #define ENCODER_CRTC_MASK                (BIT(0) | BIT(1))
  98
  99 #define TVO_MIN_HD_HEIGHT                720
 100
 101 /* enum listing the supported output data format */
 102 enum sti_tvout_video_out_type {
 103         STI_TVOUT_VIDEO_OUT_RGB,
 104         STI_TVOUT_VIDEO_OUT_YUV,
 105 };
 106
 107 struct sti_tvout {
 108         struct device *dev;
 109         struct drm_device *drm_dev;
 110         void __iomem *regs;
 111         struct reset_control *reset;
 112         struct drm_encoder *hdmi;
 113         struct drm_encoder *hda;
 114         struct drm_encoder *dvo;
 115         bool debugfs_registered;
 116 };
 117
 118 struct sti_tvout_encoder {
 119         struct drm_encoder encoder;
 120         struct sti_tvout *tvout;
 121 };
 122
 123 #define to_sti_tvout_encoder(x) \
 124         container_of(x, struct sti_tvout_encoder, encoder)
 125
 126 #define to_sti_tvout(x) to_sti_tvout_encoder(x)->tvout
 127
 128 /* preformatter conversion matrix */
 129 static const u32 rgb_to_ycbcr_601[8] = {
 130         0xF927082E, 0x04C9FEAB, 0x01D30964, 0xFA95FD3D,
 131         0x0000082E, 0x00002000, 0x00002000, 0x00000000
 132 };
 133
 134 /* 709 RGB to YCbCr */
 135 static const u32 rgb_to_ycbcr_709[8] = {
 136         0xF891082F, 0x0367FF40, 0x01280B71, 0xF9B1FE20,
 137         0x0000082F, 0x00002000, 0x00002000, 0x00000000
 138 };
 139
 140 static u32 tvout_read(struct sti_tvout *tvout, int offset)
 141 {
 142         return readl(tvout->regs + offset);
 143 }
 144
 145 static void tvout_write(struct sti_tvout *tvout, u32 val, int offset)
 146 {
 147         writel(val, tvout->regs + offset);
 148 }
 149
 150 /**
 151  * Set the clipping mode of a VIP
 152  *
 153  * @tvout: tvout structure
 154  * @reg: register to set
 155  * @cr_r:
 156  * @y_g:
 157  * @cb_b:
 158  */
 159 static void tvout_vip_set_color_order(struct sti_tvout *tvout, int reg,
 160                                       u32 cr_r, u32 y_g, u32 cb_b)
 161 {
 162         u32 val = tvout_read(tvout, reg);
 163
 164         val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT);
 165         val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT);
 166         val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT);
 167         val |= cr_r << TVO_VIP_REORDER_R_SHIFT;
 168         val |= y_g << TVO_VIP_REORDER_G_SHIFT;
 169         val |= cb_b << TVO_VIP_REORDER_B_SHIFT;
 170
 171         tvout_write(tvout, val, reg);
 172 }
 173
 174 /**
 175  * Set the clipping mode of a VIP
 176  *
 177  * @tvout: tvout structure
 178  * @reg: register to set
 179  * @range: clipping range
 180  */
 181 static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, int reg, u32 range)
 182 {
 183         u32 val = tvout_read(tvout, reg);
 184
 185         val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT);
 186         val |= range << TVO_VIP_CLIP_SHIFT;
 187         tvout_write(tvout, val, reg);
 188 }
 189
 190 /**
 191  * Set the rounded value of a VIP
 192  *
 193  * @tvout: tvout structure
 194  * @reg: register to set
 195  * @rnd: rounded val per component
 196  */
 197 static void tvout_vip_set_rnd(struct sti_tvout *tvout, int reg, u32 rnd)
 198 {
 199         u32 val = tvout_read(tvout, reg);
 200
 201         val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT);
 202         val |= rnd << TVO_VIP_RND_SHIFT;
 203         tvout_write(tvout, val, reg);
 204 }
 205
 206 /**
 207  * Select the VIP input
 208  *
 209  * @tvout: tvout structure
 210  * @reg: register to set
 211  * @main_path: main or auxiliary path
 212  * @sel_input_logic_inverted: need to invert the logic
 213  * @sel_input: selected_input (main/aux + conv)
 214  */
 215 static void tvout_vip_set_sel_input(struct sti_tvout *tvout,
 216                                     int reg,
 217                                     bool main_path,
 218                                     bool sel_input_logic_inverted,
 219                                     enum sti_tvout_video_out_type video_out)
 220 {
 221         u32 sel_input;
 222         u32 val = tvout_read(tvout, reg);
 223
 224         if (main_path)
 225                 sel_input = TVO_VIP_SEL_INPUT_MAIN;
 226         else
 227                 sel_input = TVO_VIP_SEL_INPUT_AUX;
 228
 229         switch (video_out) {
 230         case STI_TVOUT_VIDEO_OUT_RGB:
 231                 sel_input |= TVO_VIP_SEL_INPUT_BYPASSED;
 232                 break;
 233         case STI_TVOUT_VIDEO_OUT_YUV:
 234                 sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED;
 235                 break;
 236         }
 237
 238         /* on stih407 chip the sel_input bypass mode logic is inverted */
 239         if (sel_input_logic_inverted)
 240                 sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK;
 241
 242         val &= ~TVO_VIP_SEL_INPUT_MASK;
 243         val |= sel_input;
 244         tvout_write(tvout, val, reg);
 245 }
 246
 247 /**
 248  * Select the input video signed or unsigned
 249  *
 250  * @tvout: tvout structure
 251  * @reg: register to set
 252  * @in_vid_signed: used video input format
 253  */
 254 static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout,
 255                 int reg, u32 in_vid_fmt)
 256 {
 257         u32 val = tvout_read(tvout, reg);
 258
 259         val &= ~TVO_IN_FMT_SIGNED;
 260         val |= in_vid_fmt;
 261         tvout_write(tvout, val, reg);
 262 }
 263
 264 /**
 265  * Set preformatter matrix
 266  *
 267  * @tvout: tvout structure
 268  * @mode: display mode structure
 269  */
 270 static void tvout_preformatter_set_matrix(struct sti_tvout *tvout,
 271                                           struct drm_display_mode *mode)
 272 {
 273         unsigned int i;
 274         const u32 *pf_matrix;
 275
 276         if (mode->vdisplay >= TVO_MIN_HD_HEIGHT)
 277                 pf_matrix = rgb_to_ycbcr_709;
 278         else
 279                 pf_matrix = rgb_to_ycbcr_601;
 280
 281         for (i = 0; i < 8; i++) {
 282                 tvout_write(tvout, *(pf_matrix + i),
 283                             TVO_CSC_MAIN_M0 + (i * 4));
 284                 tvout_write(tvout, *(pf_matrix + i),
 285                             TVO_CSC_AUX_M0 + (i * 4));
 286         }
 287 }
 288
 289 /**
 290  * Start VIP block for DVO output
 291  *
 292  * @tvout: pointer on tvout structure
 293  * @main_path: true if main path has to be used in the vip configuration
 294  *        else aux path is used.
 295  */
 296 static void tvout_dvo_start(struct sti_tvout *tvout, bool main_path)
 297 {
 298         struct device_node *node = tvout->dev->of_node;
 299         bool sel_input_logic_inverted = false;
 300         u32 tvo_in_vid_format;
 301         int val, tmp;
 302
 303         dev_dbg(tvout->dev, "%s\n", __func__);
 304
 305         if (main_path) {
 306                 DRM_DEBUG_DRIVER("main vip for DVO\n");
 307                 /* Select the input sync for dvo */
 308                 tmp = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_DVO;
 309                 val  = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
 310                 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
 311                 val |= tmp;
 312                 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
 313                 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
 314         } else {
 315                 DRM_DEBUG_DRIVER("aux vip for DVO\n");
 316                 /* Select the input sync for dvo */
 317                 tmp = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_DVO;
 318                 val  = tmp << TVO_SYNC_DVO_PAD_VSYNC_SHIFT;
 319                 val |= tmp << TVO_SYNC_DVO_PAD_HSYNC_SHIFT;
 320                 val |= tmp;
 321                 tvout_write(tvout, val, TVO_DVO_SYNC_SEL);
 322                 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
 323         }
 324
 325         /* Set color channel order */
 326         tvout_vip_set_color_order(tvout, TVO_VIP_DVO,
 327                                   TVO_VIP_REORDER_CR_R_SEL,
 328                                   TVO_VIP_REORDER_Y_G_SEL,
 329                                   TVO_VIP_REORDER_CB_B_SEL);
 330
 331         /* Set clipping mode */
 332         tvout_vip_set_clip_mode(tvout, TVO_VIP_DVO, TVO_VIP_CLIP_DISABLED);
 333
 334         /* Set round mode (rounded to 8-bit per component) */
 335         tvout_vip_set_rnd(tvout, TVO_VIP_DVO, TVO_VIP_RND_8BIT_ROUNDED);
 336
 337         if (of_device_is_compatible(node, "st,stih407-tvout")) {
 338                 /* Set input video format */
 339                 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format,
 340                                          TVO_IN_FMT_SIGNED);
 341                 sel_input_logic_inverted = true;
 342         }
 343
 344         /* Input selection */
 345         tvout_vip_set_sel_input(tvout, TVO_VIP_DVO, main_path,
 346                                 sel_input_logic_inverted,
 347                                 STI_TVOUT_VIDEO_OUT_RGB);
 348 }
 349
 350 /**
 351  * Start VIP block for HDMI output
 352  *
 353  * @tvout: pointer on tvout structure
 354  * @main_path: true if main path has to be used in the vip configuration
 355  *        else aux path is used.
 356  */
 357 static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path)
 358 {
 359         struct device_node *node = tvout->dev->of_node;
 360         bool sel_input_logic_inverted = false;
 361         u32 tvo_in_vid_format;
 362
 363         dev_dbg(tvout->dev, "%s\n", __func__);
 364
 365         if (main_path) {
 366                 DRM_DEBUG_DRIVER("main vip for hdmi\n");
 367                 /* select the input sync for hdmi */
 368                 tvout_write(tvout,
 369                             TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDMI,
 370                             TVO_HDMI_SYNC_SEL);
 371                 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
 372         } else {
 373                 DRM_DEBUG_DRIVER("aux vip for hdmi\n");
 374                 /* select the input sync for hdmi */
 375                 tvout_write(tvout,
 376                             TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDMI,
 377                             TVO_HDMI_SYNC_SEL);
 378                 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
 379         }
 380
 381         /* set color channel order */
 382         tvout_vip_set_color_order(tvout, TVO_VIP_HDMI,
 383                                   TVO_VIP_REORDER_CR_R_SEL,
 384                                   TVO_VIP_REORDER_Y_G_SEL,
 385                                   TVO_VIP_REORDER_CB_B_SEL);
 386
 387         /* set clipping mode */
 388         tvout_vip_set_clip_mode(tvout, TVO_VIP_HDMI, TVO_VIP_CLIP_DISABLED);
 389
 390         /* set round mode (rounded to 8-bit per component) */
 391         tvout_vip_set_rnd(tvout, TVO_VIP_HDMI, TVO_VIP_RND_8BIT_ROUNDED);
 392
 393         if (of_device_is_compatible(node, "st,stih407-tvout")) {
 394                 /* set input video format */
 395                 tvout_vip_set_in_vid_fmt(tvout, tvo_in_vid_format,
 396                                         TVO_IN_FMT_SIGNED);
 397                 sel_input_logic_inverted = true;
 398         }
 399
 400         /* input selection */
 401         tvout_vip_set_sel_input(tvout, TVO_VIP_HDMI, main_path,
 402                         sel_input_logic_inverted, STI_TVOUT_VIDEO_OUT_RGB);
 403 }
 404
 405 /**
 406  * Start HDF VIP and HD DAC
 407  *
 408  * @tvout: pointer on tvout structure
 409  * @main_path: true if main path has to be used in the vip configuration
 410  *        else aux path is used.
 411  */
 412 static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
 413 {
 414         struct device_node *node = tvout->dev->of_node;
 415         bool sel_input_logic_inverted = false;
 416         u32 tvo_in_vid_format;
 417         int val;
 418
 419         dev_dbg(tvout->dev, "%s\n", __func__);
 420
 421         if (main_path) {
 422                 DRM_DEBUG_DRIVER("main vip for HDF\n");
 423                 /* Select the input sync for HD analog and HD DCS */
 424                 val  = TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
 425                 val  = val << TVO_SYNC_HD_DCS_SHIFT;
 426                 val |= TVO_SYNC_MAIN_VTG_SET_REF | VTG_SYNC_ID_HDF;
 427                 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
 428                 tvo_in_vid_format = TVO_MAIN_IN_VID_FORMAT;
 429         } else {
 430                 DRM_DEBUG_DRIVER("aux vip for HDF\n");
 431                 /* Select the input sync for HD analog and HD DCS */
 432                 val  = TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDDCS;
 433                 val  = val << TVO_SYNC_HD_DCS_SHIFT;
 434                 val |= TVO_SYNC_AUX_VTG_SET_REF | VTG_SYNC_ID_HDF;
 435                 tvout_write(tvout, val, TVO_HD_SYNC_SEL);
 436                 tvo_in_vid_format = TVO_AUX_IN_VID_FORMAT;
 437         }
 438
 439         /* set color channel order */
 440         tvout_vip_set_color_order(tvout, TVO_VIP_HDF,
 441                                   TVO_VIP_REORDER_CR_R_SEL,
 442                                   TVO_VIP_REORDER_Y_G_SEL,
 443                                   TVO_VIP_REORDER_CB_B_SEL);
 444
 445         /* set clipping mode */
 446         tvout_vip_set_clip_mode(tvout, TVO_VIP_HDF, TVO_VIP_CLIP_DISABLED);
 447
 448         /* set round mode (rounded to 10-bit per component) */
 449         tvout_vip_set_rnd(tvout, TVO_VIP_HDF, TVO_VIP_RND_10BIT_ROUNDED);
 450
 451         if (of_device_is_compatible(node, "st,stih407-tvout")) {
 452                 /* set input video format */
 453                 tvout_vip_set_in_vid_fmt(tvout,
 454                         tvo_in_vid_format, TVO_IN_FMT_SIGNED);
 455                 sel_input_logic_inverted = true;
 456         }
 457
 458         /* Input selection */
 459         tvout_vip_set_sel_input(tvout, TVO_VIP_HDF, main_path,
 460                                 sel_input_logic_inverted,
 461                                 STI_TVOUT_VIDEO_OUT_YUV);
 462
 463         /* power up HD DAC */
 464         tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
 465 }
 466
 467 #define DBGFS_DUMP(reg) seq_printf(s, "\n  %-25s 0x%08X", #reg, \
 468                                    readl(tvout->regs + reg))
 469
 470 static void tvout_dbg_vip(struct seq_file *s, int val)
 471 {
 472         int r, g, b, tmp, mask;
 473         char *const reorder[] = {"Y_G", "Cb_B", "Cr_R"};
 474         char *const clipping[] = {"No", "EAV/SAV", "Limited range RGB/Y",
 475                                   "Limited range Cb/Cr", "decided by register"};
 476         char *const round[] = {"8-bit", "10-bit", "12-bit"};
 477         char *const input_sel[] = {"Main (color matrix enabled)",
 478                                    "Main (color matrix by-passed)",
 479                                    "", "", "", "", "", "",
 480                                    "Aux (color matrix enabled)",
 481                                    "Aux (color matrix by-passed)",
 482                                    "", "", "", "", "", "Force value"};
 483
 484         seq_puts(s, "\t");
 485         mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT;
 486         r = (val & mask) >> TVO_VIP_REORDER_R_SHIFT;
 487         mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT;
 488         g = (val & mask) >> TVO_VIP_REORDER_G_SHIFT;
 489         mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT;
 490         b = (val & mask) >> TVO_VIP_REORDER_B_SHIFT;
 491         seq_printf(s, "%-24s %s->%s %s->%s %s->%s\n", "Reorder:",
 492                    reorder[r], reorder[TVO_VIP_REORDER_CR_R_SEL],
 493                    reorder[g], reorder[TVO_VIP_REORDER_Y_G_SEL],
 494                    reorder[b], reorder[TVO_VIP_REORDER_CB_B_SEL]);
 495         seq_puts(s, "\t\t\t\t\t");
 496         mask = TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT;
 497         tmp = (val & mask) >> TVO_VIP_CLIP_SHIFT;
 498         seq_printf(s, "%-24s %s\n", "Clipping:", clipping[tmp]);
 499         seq_puts(s, "\t\t\t\t\t");
 500         mask = TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT;
 501         tmp = (val & mask) >> TVO_VIP_RND_SHIFT;
 502         seq_printf(s, "%-24s input data rounded to %s per component\n",
 503                    "Round:", round[tmp]);
 504         seq_puts(s, "\t\t\t\t\t");
 505         tmp = (val & TVO_VIP_SEL_INPUT_MASK);
 506         seq_printf(s, "%-24s %s", "Input selection:", input_sel[tmp]);
 507 }
 508
 509 static void tvout_dbg_hd_dac_cfg(struct seq_file *s, int val)
 510 {
 511         seq_printf(s, "\t%-24s %s", "HD DAC:",
 512                    val & 1 ? "disabled" : "enabled");
 513 }
 514
 515 static int tvout_dbg_show(struct seq_file *s, void *data)
 516 {
 517         struct drm_info_node *node = s->private;
 518         struct sti_tvout *tvout = (struct sti_tvout *)node->info_ent->data;
 519         struct drm_crtc *crtc;
 520
 521         seq_printf(s, "TVOUT: (vaddr = 0x%p)", tvout->regs);
 522
 523         seq_puts(s, "\n\n  HDMI encoder: ");
 524         crtc = tvout->hdmi->crtc;
 525         if (crtc) {
 526                 seq_printf(s, "connected to %s path",
 527                            sti_crtc_is_main(crtc) ? "main" : "aux");
 528                 DBGFS_DUMP(TVO_HDMI_SYNC_SEL);
 529                 DBGFS_DUMP(TVO_VIP_HDMI);
 530                 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDMI));
 531         } else {
 532                 seq_puts(s, "disabled");
 533         }
 534
 535         seq_puts(s, "\n\n  DVO encoder: ");
 536         crtc = tvout->dvo->crtc;
 537         if (crtc) {
 538                 seq_printf(s, "connected to %s path",
 539                            sti_crtc_is_main(crtc) ? "main" : "aux");
 540                 DBGFS_DUMP(TVO_DVO_SYNC_SEL);
 541                 DBGFS_DUMP(TVO_DVO_CONFIG);
 542                 DBGFS_DUMP(TVO_VIP_DVO);
 543                 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_DVO));
 544         } else {
 545                 seq_puts(s, "disabled");
 546         }
 547
 548         seq_puts(s, "\n\n  HDA encoder: ");
 549         crtc = tvout->hda->crtc;
 550         if (crtc) {
 551                 seq_printf(s, "connected to %s path",
 552                            sti_crtc_is_main(crtc) ? "main" : "aux");
 553                 DBGFS_DUMP(TVO_HD_SYNC_SEL);
 554                 DBGFS_DUMP(TVO_HD_DAC_CFG_OFF);
 555                 tvout_dbg_hd_dac_cfg(s,
 556                                      readl(tvout->regs + TVO_HD_DAC_CFG_OFF));
 557                 DBGFS_DUMP(TVO_VIP_HDF);
 558                 tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDF));
 559         } else {
 560                 seq_puts(s, "disabled");
 561         }
 562
 563         seq_puts(s, "\n\n  main path configuration");
 564         DBGFS_DUMP(TVO_CSC_MAIN_M0);
 565         DBGFS_DUMP(TVO_CSC_MAIN_M1);
 566         DBGFS_DUMP(TVO_CSC_MAIN_M2);
 567         DBGFS_DUMP(TVO_CSC_MAIN_M3);
 568         DBGFS_DUMP(TVO_CSC_MAIN_M4);
 569         DBGFS_DUMP(TVO_CSC_MAIN_M5);
 570         DBGFS_DUMP(TVO_CSC_MAIN_M6);
 571         DBGFS_DUMP(TVO_CSC_MAIN_M7);
 572         DBGFS_DUMP(TVO_MAIN_IN_VID_FORMAT);
 573
 574         seq_puts(s, "\n\n  auxiliary path configuration");
 575         DBGFS_DUMP(TVO_CSC_AUX_M0);
 576         DBGFS_DUMP(TVO_CSC_AUX_M2);
 577         DBGFS_DUMP(TVO_CSC_AUX_M3);
 578         DBGFS_DUMP(TVO_CSC_AUX_M4);
 579         DBGFS_DUMP(TVO_CSC_AUX_M5);
 580         DBGFS_DUMP(TVO_CSC_AUX_M6);
 581         DBGFS_DUMP(TVO_CSC_AUX_M7);
 582         DBGFS_DUMP(TVO_AUX_IN_VID_FORMAT);
 583         seq_puts(s, "\n");
 584
 585         return 0;
 586 }
 587
 588 static struct drm_info_list tvout_debugfs_files[] = {
 589         { "tvout", tvout_dbg_show, 0, NULL },
 590 };
 591
 592 static void tvout_debugfs_exit(struct sti_tvout *tvout, struct drm_minor *minor)
 593 {
 594         drm_debugfs_remove_files(tvout_debugfs_files,
 595                                  ARRAY_SIZE(tvout_debugfs_files),
 596                                  minor);
 597 }
 598
 599 static int tvout_debugfs_init(struct sti_tvout *tvout, struct drm_minor *minor)
 600 {
 601         unsigned int i;
 602
 603         for (i = 0; i < ARRAY_SIZE(tvout_debugfs_files); i++)
 604                 tvout_debugfs_files[i].data = tvout;
 605
 606         return drm_debugfs_create_files(tvout_debugfs_files,
 607                                         ARRAY_SIZE(tvout_debugfs_files),
 608                                         minor->debugfs_root, minor);
 609 }
 610
 611 static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
 612 {
 613 }
 614
 615 static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder,
 616                                        struct drm_display_mode *mode,
 617                                        struct drm_display_mode *adjusted_mode)
 618 {
 619 }
 620
 621 static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)
 622 {
 623         struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
 624
 625         drm_encoder_cleanup(encoder);
 626         kfree(sti_encoder);
 627 }
 628
 629 static int sti_tvout_late_register(struct drm_encoder *encoder)
 630 {
 631         struct sti_tvout *tvout = to_sti_tvout(encoder);
 632         int ret;
 633
 634         if (tvout->debugfs_registered)
 635                 return 0;
 636
 637         ret = tvout_debugfs_init(tvout, encoder->dev->primary);
 638         if (ret)
 639                 return ret;
 640
 641         tvout->debugfs_registered = true;
 642         return 0;
 643 }
 644
 645 static void sti_tvout_early_unregister(struct drm_encoder *encoder)
 646 {
 647         struct sti_tvout *tvout = to_sti_tvout(encoder);
 648
 649         if (!tvout->debugfs_registered)
 650                 return;
 651
 652         tvout_debugfs_exit(tvout, encoder->dev->primary);
 653         tvout->debugfs_registered = false;
 654 }
 655
 656 static const struct drm_encoder_funcs sti_tvout_encoder_funcs = {
 657         .destroy = sti_tvout_encoder_destroy,
 658         .late_register = sti_tvout_late_register,
 659         .early_unregister = sti_tvout_early_unregister,
 660 };
 661
 662 static void sti_dvo_encoder_enable(struct drm_encoder *encoder)
 663 {
 664         struct sti_tvout *tvout = to_sti_tvout(encoder);
 665
 666         tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
 667
 668         tvout_dvo_start(tvout, sti_crtc_is_main(encoder->crtc));
 669 }
 670
 671 static void sti_dvo_encoder_disable(struct drm_encoder *encoder)
 672 {
 673         struct sti_tvout *tvout = to_sti_tvout(encoder);
 674
 675         /* Reset VIP register */
 676         tvout_write(tvout, 0x0, TVO_VIP_DVO);
 677 }
 678
 679 static const struct drm_encoder_helper_funcs sti_dvo_encoder_helper_funcs = {
 680         .dpms = sti_tvout_encoder_dpms,
 681         .mode_set = sti_tvout_encoder_mode_set,
 682         .enable = sti_dvo_encoder_enable,
 683         .disable = sti_dvo_encoder_disable,
 684 };
 685
 686 static struct drm_encoder *
 687 sti_tvout_create_dvo_encoder(struct drm_device *dev,
 688                              struct sti_tvout *tvout)
 689 {
 690         struct sti_tvout_encoder *encoder;
 691         struct drm_encoder *drm_encoder;
 692
 693         encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
 694         if (!encoder)
 695                 return NULL;
 696
 697         encoder->tvout = tvout;
 698
 699         drm_encoder = (struct drm_encoder *)encoder;
 700
 701         drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
 702         drm_encoder->possible_clones = 1 << 0;
 703
 704         drm_encoder_init(dev, drm_encoder,
 705                          &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_LVDS,
 706                          NULL);
 707
 708         drm_encoder_helper_add(drm_encoder, &sti_dvo_encoder_helper_funcs);
 709
 710         return drm_encoder;
 711 }
 712
 713 static void sti_hda_encoder_enable(struct drm_encoder *encoder)
 714 {
 715         struct sti_tvout *tvout = to_sti_tvout(encoder);
 716
 717         tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
 718
 719         tvout_hda_start(tvout, sti_crtc_is_main(encoder->crtc));
 720 }
 721
 722 static void sti_hda_encoder_disable(struct drm_encoder *encoder)
 723 {
 724         struct sti_tvout *tvout = to_sti_tvout(encoder);
 725
 726         /* reset VIP register */
 727         tvout_write(tvout, 0x0, TVO_VIP_HDF);
 728
 729         /* power down HD DAC */
 730         tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF);
 731 }
 732
 733 static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {
 734         .dpms = sti_tvout_encoder_dpms,
 735         .mode_set = sti_tvout_encoder_mode_set,
 736         .commit = sti_hda_encoder_enable,
 737         .disable = sti_hda_encoder_disable,
 738 };
 739
 740 static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev,
 741                 struct sti_tvout *tvout)
 742 {
 743         struct sti_tvout_encoder *encoder;
 744         struct drm_encoder *drm_encoder;
 745
 746         encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
 747         if (!encoder)
 748                 return NULL;
 749
 750         encoder->tvout = tvout;
 751
 752         drm_encoder = (struct drm_encoder *) encoder;
 753
 754         drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
 755         drm_encoder->possible_clones = 1 << 0;
 756
 757         drm_encoder_init(dev, drm_encoder,
 758                         &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC, NULL);
 759
 760         drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs);
 761
 762         return drm_encoder;
 763 }
 764
 765 static void sti_hdmi_encoder_enable(struct drm_encoder *encoder)
 766 {
 767         struct sti_tvout *tvout = to_sti_tvout(encoder);
 768
 769         tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);
 770
 771         tvout_hdmi_start(tvout, sti_crtc_is_main(encoder->crtc));
 772 }
 773
 774 static void sti_hdmi_encoder_disable(struct drm_encoder *encoder)
 775 {
 776         struct sti_tvout *tvout = to_sti_tvout(encoder);
 777
 778         /* reset VIP register */
 779         tvout_write(tvout, 0x0, TVO_VIP_HDMI);
 780 }
 781
 782 static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {
 783         .dpms = sti_tvout_encoder_dpms,
 784         .mode_set = sti_tvout_encoder_mode_set,
 785         .commit = sti_hdmi_encoder_enable,
 786         .disable = sti_hdmi_encoder_disable,
 787 };
 788
 789 static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev,
 790                 struct sti_tvout *tvout)
 791 {
 792         struct sti_tvout_encoder *encoder;
 793         struct drm_encoder *drm_encoder;
 794
 795         encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL);
 796         if (!encoder)
 797                 return NULL;
 798
 799         encoder->tvout = tvout;
 800
 801         drm_encoder = (struct drm_encoder *) encoder;
 802
 803         drm_encoder->possible_crtcs = ENCODER_CRTC_MASK;
 804         drm_encoder->possible_clones = 1 << 1;
 805
 806         drm_encoder_init(dev, drm_encoder,
 807                         &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS, NULL);
 808
 809         drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs);
 810
 811         return drm_encoder;
 812 }
 813
 814 static void sti_tvout_create_encoders(struct drm_device *dev,
 815                 struct sti_tvout *tvout)
 816 {
 817         tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout);
 818         tvout->hda = sti_tvout_create_hda_encoder(dev, tvout);
 819         tvout->dvo = sti_tvout_create_dvo_encoder(dev, tvout);
 820 }
 821
 822 static void sti_tvout_destroy_encoders(struct sti_tvout *tvout)
 823 {
 824         if (tvout->hdmi)
 825                 drm_encoder_cleanup(tvout->hdmi);
 826         tvout->hdmi = NULL;
 827
 828         if (tvout->hda)
 829                 drm_encoder_cleanup(tvout->hda);
 830         tvout->hda = NULL;
 831
 832         if (tvout->dvo)
 833                 drm_encoder_cleanup(tvout->dvo);
 834         tvout->dvo = NULL;
 835 }
 836
 837 static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
 838 {
 839         struct sti_tvout *tvout = dev_get_drvdata(dev);
 840         struct drm_device *drm_dev = data;
 841
 842         tvout->drm_dev = drm_dev;
 843
 844         sti_tvout_create_encoders(drm_dev, tvout);
 845
 846         return 0;
 847 }
 848
 849 static void sti_tvout_unbind(struct device *dev, struct device *master,
 850         void *data)
 851 {
 852         struct sti_tvout *tvout = dev_get_drvdata(dev);
 853
 854         sti_tvout_destroy_encoders(tvout);
 855 }
 856
 857 static const struct component_ops sti_tvout_ops = {
 858         .bind   = sti_tvout_bind,
 859         .unbind = sti_tvout_unbind,
 860 };
 861
 862 static int sti_tvout_probe(struct platform_device *pdev)
 863 {
 864         struct device *dev = &pdev->dev;
 865         struct device_node *node = dev->of_node;
 866         struct sti_tvout *tvout;
 867         struct resource *res;
 868
 869         DRM_INFO("%s\n", __func__);
 870
 871         if (!node)
 872                 return -ENODEV;
 873
 874         tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL);
 875         if (!tvout)
 876                 return -ENOMEM;
 877
 878         tvout->dev = dev;
 879
 880         /* get Memory ressources */
 881         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg");
 882         if (!res) {
 883                 DRM_ERROR("Invalid glue resource\n");
 884                 return -ENOMEM;
 885         }
 886         tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
 887         if (!tvout->regs)
 888                 return -ENOMEM;
 889
 890         /* get reset resources */
 891         tvout->reset = devm_reset_control_get(dev, "tvout");
 892         /* take tvout out of reset */
 893         if (!IS_ERR(tvout->reset))
 894                 reset_control_deassert(tvout->reset);
 895
 896         platform_set_drvdata(pdev, tvout);
 897
 898         return component_add(dev, &sti_tvout_ops);
 899 }
 900
 901 static int sti_tvout_remove(struct platform_device *pdev)
 902 {
 903         component_del(&pdev->dev, &sti_tvout_ops);
 904         return 0;
 905 }
 906
 907 static const struct of_device_id tvout_of_match[] = {
 908         { .compatible = "st,stih416-tvout", },
 909         { .compatible = "st,stih407-tvout", },
 910         { /* end node */ }
 911 };
 912 MODULE_DEVICE_TABLE(of, tvout_of_match);
 913
 914 struct platform_driver sti_tvout_driver = {
 915         .driver = {
 916                 .name = "sti-tvout",
 917                 .owner = THIS_MODULE,
 918                 .of_match_table = tvout_of_match,
 919         },
 920         .probe = sti_tvout_probe,
 921         .remove = sti_tvout_remove,
 922 };
 923
 924 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
 925 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
 926 MODULE_LICENSE("GPL");