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