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