drivers/video/omap2/dss/dss_features.c

   1 /*
   2  * linux/drivers/video/omap2/dss/dss_features.c
   3  *
   4  * Copyright (C) 2010 Texas Instruments
   5  * Author: Archit Taneja <archit@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/types.h>
  22 #include <linux/err.h>
  23 #include <linux/slab.h>
  24
  25 #include <video/omapdss.h>
  26 #include <plat/cpu.h>
  27
  28 #include "dss.h"
  29 #include "dss_features.h"
  30
  31 /* Defines a generic omap register field */
  32 struct dss_reg_field {
  33         u8 start, end;
  34 };
  35
  36 struct dss_param_range {
  37         int min, max;
  38 };
  39
  40 struct omap_dss_features {
  41         const struct dss_reg_field *reg_fields;
  42         const int num_reg_fields;
  43
  44         const u32 has_feature;
  45
  46         const int num_mgrs;
  47         const int num_ovls;
  48         const enum omap_display_type *supported_displays;
  49         const enum omap_color_mode *supported_color_modes;
  50         const char * const *clksrc_names;
  51         const struct dss_param_range *dss_params;
  52
  53         const u32 buffer_size_unit;
  54         const u32 burst_size_unit;
  55 };
  56
  57 /* This struct is assigned to one of the below during initialization */
  58 static const struct omap_dss_features *omap_current_dss_features;
  59
  60 static const struct dss_reg_field omap2_dss_reg_fields[] = {
  61         [FEAT_REG_FIRHINC]                      = { 11, 0 },
  62         [FEAT_REG_FIRVINC]                      = { 27, 16 },
  63         [FEAT_REG_FIFOLOWTHRESHOLD]             = { 8, 0 },
  64         [FEAT_REG_FIFOHIGHTHRESHOLD]            = { 24, 16 },
  65         [FEAT_REG_FIFOSIZE]                     = { 8, 0 },
  66         [FEAT_REG_HORIZONTALACCU]               = { 9, 0 },
  67         [FEAT_REG_VERTICALACCU]                 = { 25, 16 },
  68         [FEAT_REG_DISPC_CLK_SWITCH]             = { 0, 0 },
  69         [FEAT_REG_DSIPLL_REGN]                  = { 0, 0 },
  70         [FEAT_REG_DSIPLL_REGM]                  = { 0, 0 },
  71         [FEAT_REG_DSIPLL_REGM_DISPC]            = { 0, 0 },
  72         [FEAT_REG_DSIPLL_REGM_DSI]              = { 0, 0 },
  73 };
  74
  75 static const struct dss_reg_field omap3_dss_reg_fields[] = {
  76         [FEAT_REG_FIRHINC]                      = { 12, 0 },
  77         [FEAT_REG_FIRVINC]                      = { 28, 16 },
  78         [FEAT_REG_FIFOLOWTHRESHOLD]             = { 11, 0 },
  79         [FEAT_REG_FIFOHIGHTHRESHOLD]            = { 27, 16 },
  80         [FEAT_REG_FIFOSIZE]                     = { 10, 0 },
  81         [FEAT_REG_HORIZONTALACCU]               = { 9, 0 },
  82         [FEAT_REG_VERTICALACCU]                 = { 25, 16 },
  83         [FEAT_REG_DISPC_CLK_SWITCH]             = { 0, 0 },
  84         [FEAT_REG_DSIPLL_REGN]                  = { 7, 1 },
  85         [FEAT_REG_DSIPLL_REGM]                  = { 18, 8 },
  86         [FEAT_REG_DSIPLL_REGM_DISPC]            = { 22, 19 },
  87         [FEAT_REG_DSIPLL_REGM_DSI]              = { 26, 23 },
  88 };
  89
  90 static const struct dss_reg_field omap4_dss_reg_fields[] = {
  91         [FEAT_REG_FIRHINC]                      = { 12, 0 },
  92         [FEAT_REG_FIRVINC]                      = { 28, 16 },
  93         [FEAT_REG_FIFOLOWTHRESHOLD]             = { 15, 0 },
  94         [FEAT_REG_FIFOHIGHTHRESHOLD]            = { 31, 16 },
  95         [FEAT_REG_FIFOSIZE]                     = { 15, 0 },
  96         [FEAT_REG_HORIZONTALACCU]               = { 10, 0 },
  97         [FEAT_REG_VERTICALACCU]                 = { 26, 16 },
  98         [FEAT_REG_DISPC_CLK_SWITCH]             = { 9, 8 },
  99         [FEAT_REG_DSIPLL_REGN]                  = { 8, 1 },
 100         [FEAT_REG_DSIPLL_REGM]                  = { 20, 9 },
 101         [FEAT_REG_DSIPLL_REGM_DISPC]            = { 25, 21 },
 102         [FEAT_REG_DSIPLL_REGM_DSI]              = { 30, 26 },
 103 };
 104
 105 static const enum omap_display_type omap2_dss_supported_displays[] = {
 106         /* OMAP_DSS_CHANNEL_LCD */
 107         OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI,
 108
 109         /* OMAP_DSS_CHANNEL_DIGIT */
 110         OMAP_DISPLAY_TYPE_VENC,
 111 };
 112
 113 static const enum omap_display_type omap3430_dss_supported_displays[] = {
 114         /* OMAP_DSS_CHANNEL_LCD */
 115         OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
 116         OMAP_DISPLAY_TYPE_SDI | OMAP_DISPLAY_TYPE_DSI,
 117
 118         /* OMAP_DSS_CHANNEL_DIGIT */
 119         OMAP_DISPLAY_TYPE_VENC,
 120 };
 121
 122 static const enum omap_display_type omap3630_dss_supported_displays[] = {
 123         /* OMAP_DSS_CHANNEL_LCD */
 124         OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
 125         OMAP_DISPLAY_TYPE_DSI,
 126
 127         /* OMAP_DSS_CHANNEL_DIGIT */
 128         OMAP_DISPLAY_TYPE_VENC,
 129 };
 130
 131 static const enum omap_display_type omap4_dss_supported_displays[] = {
 132         /* OMAP_DSS_CHANNEL_LCD */
 133         OMAP_DISPLAY_TYPE_DBI | OMAP_DISPLAY_TYPE_DSI,
 134
 135         /* OMAP_DSS_CHANNEL_DIGIT */
 136         OMAP_DISPLAY_TYPE_VENC | OMAP_DISPLAY_TYPE_HDMI,
 137
 138         /* OMAP_DSS_CHANNEL_LCD2 */
 139         OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
 140         OMAP_DISPLAY_TYPE_DSI,
 141 };
 142
 143 static const enum omap_color_mode omap2_dss_supported_color_modes[] = {
 144         /* OMAP_DSS_GFX */
 145         OMAP_DSS_COLOR_CLUT1 | OMAP_DSS_COLOR_CLUT2 |
 146         OMAP_DSS_COLOR_CLUT4 | OMAP_DSS_COLOR_CLUT8 |
 147         OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_RGB16 |
 148         OMAP_DSS_COLOR_RGB24U | OMAP_DSS_COLOR_RGB24P,
 149
 150         /* OMAP_DSS_VIDEO1 */
 151         OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U |
 152         OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_YUV2 |
 153         OMAP_DSS_COLOR_UYVY,
 154
 155         /* OMAP_DSS_VIDEO2 */
 156         OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U |
 157         OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_YUV2 |
 158         OMAP_DSS_COLOR_UYVY,
 159 };
 160
 161 static const enum omap_color_mode omap3_dss_supported_color_modes[] = {
 162         /* OMAP_DSS_GFX */
 163         OMAP_DSS_COLOR_CLUT1 | OMAP_DSS_COLOR_CLUT2 |
 164         OMAP_DSS_COLOR_CLUT4 | OMAP_DSS_COLOR_CLUT8 |
 165         OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_ARGB16 |
 166         OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U |
 167         OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_ARGB32 |
 168         OMAP_DSS_COLOR_RGBA32 | OMAP_DSS_COLOR_RGBX32,
 169
 170         /* OMAP_DSS_VIDEO1 */
 171         OMAP_DSS_COLOR_RGB24U | OMAP_DSS_COLOR_RGB24P |
 172         OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_RGB16 |
 173         OMAP_DSS_COLOR_YUV2 | OMAP_DSS_COLOR_UYVY,
 174
 175         /* OMAP_DSS_VIDEO2 */
 176         OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_ARGB16 |
 177         OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U |
 178         OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_YUV2 |
 179         OMAP_DSS_COLOR_UYVY | OMAP_DSS_COLOR_ARGB32 |
 180         OMAP_DSS_COLOR_RGBA32 | OMAP_DSS_COLOR_RGBX32,
 181 };
 182
 183 static const enum omap_color_mode omap4_dss_supported_color_modes[] = {
 184         /* OMAP_DSS_GFX */
 185         OMAP_DSS_COLOR_CLUT1 | OMAP_DSS_COLOR_CLUT2 |
 186         OMAP_DSS_COLOR_CLUT4 | OMAP_DSS_COLOR_CLUT8 |
 187         OMAP_DSS_COLOR_RGB12U | OMAP_DSS_COLOR_ARGB16 |
 188         OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB24U |
 189         OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_ARGB32 |
 190         OMAP_DSS_COLOR_RGBA32 | OMAP_DSS_COLOR_RGBX32 |
 191         OMAP_DSS_COLOR_ARGB16_1555,
 192
 193         /* OMAP_DSS_VIDEO1 */
 194         OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB12U |
 195         OMAP_DSS_COLOR_YUV2 | OMAP_DSS_COLOR_ARGB16_1555 |
 196         OMAP_DSS_COLOR_RGBA32 | OMAP_DSS_COLOR_NV12 |
 197         OMAP_DSS_COLOR_RGBA16 | OMAP_DSS_COLOR_RGB24U |
 198         OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_UYVY |
 199         OMAP_DSS_COLOR_ARGB16 | OMAP_DSS_COLOR_XRGB16_1555 |
 200         OMAP_DSS_COLOR_ARGB32 | OMAP_DSS_COLOR_RGBX16 |
 201         OMAP_DSS_COLOR_RGBX32,
 202
 203        /* OMAP_DSS_VIDEO2 */
 204         OMAP_DSS_COLOR_RGB16 | OMAP_DSS_COLOR_RGB12U |
 205         OMAP_DSS_COLOR_YUV2 | OMAP_DSS_COLOR_ARGB16_1555 |
 206         OMAP_DSS_COLOR_RGBA32 | OMAP_DSS_COLOR_NV12 |
 207         OMAP_DSS_COLOR_RGBA16 | OMAP_DSS_COLOR_RGB24U |
 208         OMAP_DSS_COLOR_RGB24P | OMAP_DSS_COLOR_UYVY |
 209         OMAP_DSS_COLOR_ARGB16 | OMAP_DSS_COLOR_XRGB16_1555 |
 210         OMAP_DSS_COLOR_ARGB32 | OMAP_DSS_COLOR_RGBX16 |
 211         OMAP_DSS_COLOR_RGBX32,
 212 };
 213
 214 static const char * const omap2_dss_clk_source_names[] = {
 215         [OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC]  = "N/A",
 216         [OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI]    = "N/A",
 217         [OMAP_DSS_CLK_SRC_FCK]                  = "DSS_FCLK1",
 218 };
 219
 220 static const char * const omap3_dss_clk_source_names[] = {
 221         [OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC]  = "DSI1_PLL_FCLK",
 222         [OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI]    = "DSI2_PLL_FCLK",
 223         [OMAP_DSS_CLK_SRC_FCK]                  = "DSS1_ALWON_FCLK",
 224 };
 225
 226 static const char * const omap4_dss_clk_source_names[] = {
 227         [OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC]  = "PLL1_CLK1",
 228         [OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI]    = "PLL1_CLK2",
 229         [OMAP_DSS_CLK_SRC_FCK]                  = "DSS_FCLK",
 230         [OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC] = "PLL2_CLK1",
 231         [OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI]   = "PLL2_CLK2",
 232 };
 233
 234 static const struct dss_param_range omap2_dss_param_range[] = {
 235         [FEAT_PARAM_DSS_FCK]                    = { 0, 173000000 },
 236         [FEAT_PARAM_DSIPLL_REGN]                = { 0, 0 },
 237         [FEAT_PARAM_DSIPLL_REGM]                = { 0, 0 },
 238         [FEAT_PARAM_DSIPLL_REGM_DISPC]          = { 0, 0 },
 239         [FEAT_PARAM_DSIPLL_REGM_DSI]            = { 0, 0 },
 240         [FEAT_PARAM_DSIPLL_FINT]                = { 0, 0 },
 241         [FEAT_PARAM_DSIPLL_LPDIV]               = { 0, 0 },
 242 };
 243
 244 static const struct dss_param_range omap3_dss_param_range[] = {
 245         [FEAT_PARAM_DSS_FCK]                    = { 0, 173000000 },
 246         [FEAT_PARAM_DSIPLL_REGN]                = { 0, (1 << 7) - 1 },
 247         [FEAT_PARAM_DSIPLL_REGM]                = { 0, (1 << 11) - 1 },
 248         [FEAT_PARAM_DSIPLL_REGM_DISPC]          = { 0, (1 << 4) - 1 },
 249         [FEAT_PARAM_DSIPLL_REGM_DSI]            = { 0, (1 << 4) - 1 },
 250         [FEAT_PARAM_DSIPLL_FINT]                = { 750000, 2100000 },
 251         [FEAT_PARAM_DSIPLL_LPDIV]               = { 1, (1 << 13) - 1},
 252 };
 253
 254 static const struct dss_param_range omap4_dss_param_range[] = {
 255         [FEAT_PARAM_DSS_FCK]                    = { 0, 186000000 },
 256         [FEAT_PARAM_DSIPLL_REGN]                = { 0, (1 << 8) - 1 },
 257         [FEAT_PARAM_DSIPLL_REGM]                = { 0, (1 << 12) - 1 },
 258         [FEAT_PARAM_DSIPLL_REGM_DISPC]          = { 0, (1 << 5) - 1 },
 259         [FEAT_PARAM_DSIPLL_REGM_DSI]            = { 0, (1 << 5) - 1 },
 260         [FEAT_PARAM_DSIPLL_FINT]                = { 500000, 2500000 },
 261         [FEAT_PARAM_DSIPLL_LPDIV]               = { 0, (1 << 13) - 1 },
 262 };
 263
 264 /* OMAP2 DSS Features */
 265 static const struct omap_dss_features omap2_dss_features = {
 266         .reg_fields = omap2_dss_reg_fields,
 267         .num_reg_fields = ARRAY_SIZE(omap2_dss_reg_fields),
 268
 269         .has_feature    =
 270                 FEAT_LCDENABLEPOL | FEAT_LCDENABLESIGNAL |
 271                 FEAT_PCKFREEENABLE | FEAT_FUNCGATED |
 272                 FEAT_ROWREPEATENABLE | FEAT_RESIZECONF,
 273
 274         .num_mgrs = 2,
 275         .num_ovls = 3,
 276         .supported_displays = omap2_dss_supported_displays,
 277         .supported_color_modes = omap2_dss_supported_color_modes,
 278         .clksrc_names = omap2_dss_clk_source_names,
 279         .dss_params = omap2_dss_param_range,
 280         .buffer_size_unit = 1,
 281         .burst_size_unit = 8,
 282 };
 283
 284 /* OMAP3 DSS Features */
 285 static const struct omap_dss_features omap3430_dss_features = {
 286         .reg_fields = omap3_dss_reg_fields,
 287         .num_reg_fields = ARRAY_SIZE(omap3_dss_reg_fields),
 288
 289         .has_feature    =
 290                 FEAT_GLOBAL_ALPHA | FEAT_LCDENABLEPOL |
 291                 FEAT_LCDENABLESIGNAL | FEAT_PCKFREEENABLE |
 292                 FEAT_FUNCGATED | FEAT_ROWREPEATENABLE |
 293                 FEAT_LINEBUFFERSPLIT | FEAT_RESIZECONF |
 294                 FEAT_DSI_PLL_FREQSEL | FEAT_DSI_REVERSE_TXCLKESC |
 295                 FEAT_VENC_REQUIRES_TV_DAC_CLK | FEAT_CPR | FEAT_PRELOAD |
 296                 FEAT_FIR_COEF_V,
 297
 298         .num_mgrs = 2,
 299         .num_ovls = 3,
 300         .supported_displays = omap3430_dss_supported_displays,
 301         .supported_color_modes = omap3_dss_supported_color_modes,
 302         .clksrc_names = omap3_dss_clk_source_names,
 303         .dss_params = omap3_dss_param_range,
 304         .buffer_size_unit = 1,
 305         .burst_size_unit = 8,
 306 };
 307
 308 static const struct omap_dss_features omap3630_dss_features = {
 309         .reg_fields = omap3_dss_reg_fields,
 310         .num_reg_fields = ARRAY_SIZE(omap3_dss_reg_fields),
 311
 312         .has_feature    =
 313                 FEAT_GLOBAL_ALPHA | FEAT_LCDENABLEPOL |
 314                 FEAT_LCDENABLESIGNAL | FEAT_PCKFREEENABLE |
 315                 FEAT_PRE_MULT_ALPHA | FEAT_FUNCGATED |
 316                 FEAT_ROWREPEATENABLE | FEAT_LINEBUFFERSPLIT |
 317                 FEAT_RESIZECONF | FEAT_DSI_PLL_PWR_BUG |
 318                 FEAT_DSI_PLL_FREQSEL | FEAT_CPR | FEAT_PRELOAD |
 319                 FEAT_FIR_COEF_V,
 320
 321         .num_mgrs = 2,
 322         .num_ovls = 3,
 323         .supported_displays = omap3630_dss_supported_displays,
 324         .supported_color_modes = omap3_dss_supported_color_modes,
 325         .clksrc_names = omap3_dss_clk_source_names,
 326         .dss_params = omap3_dss_param_range,
 327         .buffer_size_unit = 1,
 328         .burst_size_unit = 8,
 329 };
 330
 331 /* OMAP4 DSS Features */
 332 /* For OMAP4430 ES 1.0 revision */
 333 static const struct omap_dss_features omap4430_es1_0_dss_features  = {
 334         .reg_fields = omap4_dss_reg_fields,
 335         .num_reg_fields = ARRAY_SIZE(omap4_dss_reg_fields),
 336
 337         .has_feature    =
 338                 FEAT_GLOBAL_ALPHA | FEAT_PRE_MULT_ALPHA |
 339                 FEAT_MGR_LCD2 | FEAT_GLOBAL_ALPHA_VID1 |
 340                 FEAT_CORE_CLK_DIV | FEAT_LCD_CLK_SRC |
 341                 FEAT_DSI_DCS_CMD_CONFIG_VC | FEAT_DSI_VC_OCP_WIDTH |
 342                 FEAT_DSI_GNQ | FEAT_HANDLE_UV_SEPARATE | FEAT_ATTR2 |
 343                 FEAT_CPR | FEAT_PRELOAD | FEAT_FIR_COEF_V,
 344
 345         .num_mgrs = 3,
 346         .num_ovls = 3,
 347         .supported_displays = omap4_dss_supported_displays,
 348         .supported_color_modes = omap4_dss_supported_color_modes,
 349         .clksrc_names = omap4_dss_clk_source_names,
 350         .dss_params = omap4_dss_param_range,
 351         .buffer_size_unit = 16,
 352         .burst_size_unit = 16,
 353 };
 354
 355 /* For all the other OMAP4 versions */
 356 static const struct omap_dss_features omap4_dss_features = {
 357         .reg_fields = omap4_dss_reg_fields,
 358         .num_reg_fields = ARRAY_SIZE(omap4_dss_reg_fields),
 359
 360         .has_feature    =
 361                 FEAT_GLOBAL_ALPHA | FEAT_PRE_MULT_ALPHA |
 362                 FEAT_MGR_LCD2 | FEAT_GLOBAL_ALPHA_VID1 |
 363                 FEAT_CORE_CLK_DIV | FEAT_LCD_CLK_SRC |
 364                 FEAT_DSI_DCS_CMD_CONFIG_VC | FEAT_DSI_VC_OCP_WIDTH |
 365                 FEAT_DSI_GNQ | FEAT_HDMI_CTS_SWMODE |
 366                 FEAT_HANDLE_UV_SEPARATE | FEAT_ATTR2 | FEAT_CPR |
 367                 FEAT_PRELOAD | FEAT_FIR_COEF_V,
 368
 369         .num_mgrs = 3,
 370         .num_ovls = 3,
 371         .supported_displays = omap4_dss_supported_displays,
 372         .supported_color_modes = omap4_dss_supported_color_modes,
 373         .clksrc_names = omap4_dss_clk_source_names,
 374         .dss_params = omap4_dss_param_range,
 375         .buffer_size_unit = 16,
 376         .burst_size_unit = 16,
 377 };
 378
 379 /* Functions returning values related to a DSS feature */
 380 int dss_feat_get_num_mgrs(void)
 381 {
 382         return omap_current_dss_features->num_mgrs;
 383 }
 384
 385 int dss_feat_get_num_ovls(void)
 386 {
 387         return omap_current_dss_features->num_ovls;
 388 }
 389
 390 unsigned long dss_feat_get_param_min(enum dss_range_param param)
 391 {
 392         return omap_current_dss_features->dss_params[param].min;
 393 }
 394
 395 unsigned long dss_feat_get_param_max(enum dss_range_param param)
 396 {
 397         return omap_current_dss_features->dss_params[param].max;
 398 }
 399
 400 enum omap_display_type dss_feat_get_supported_displays(enum omap_channel channel)
 401 {
 402         return omap_current_dss_features->supported_displays[channel];
 403 }
 404
 405 enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane plane)
 406 {
 407         return omap_current_dss_features->supported_color_modes[plane];
 408 }
 409
 410 bool dss_feat_color_mode_supported(enum omap_plane plane,
 411                 enum omap_color_mode color_mode)
 412 {
 413         return omap_current_dss_features->supported_color_modes[plane] &
 414                         color_mode;
 415 }
 416
 417 const char *dss_feat_get_clk_source_name(enum omap_dss_clk_source id)
 418 {
 419         return omap_current_dss_features->clksrc_names[id];
 420 }
 421
 422 u32 dss_feat_get_buffer_size_unit(void)
 423 {
 424         return omap_current_dss_features->buffer_size_unit;
 425 }
 426
 427 u32 dss_feat_get_burst_size_unit(void)
 428 {
 429         return omap_current_dss_features->burst_size_unit;
 430 }
 431
 432 /* DSS has_feature check */
 433 bool dss_has_feature(enum dss_feat_id id)
 434 {
 435         return omap_current_dss_features->has_feature & id;
 436 }
 437
 438 void dss_feat_get_reg_field(enum dss_feat_reg_field id, u8 *start, u8 *end)
 439 {
 440         if (id >= omap_current_dss_features->num_reg_fields)
 441                 BUG();
 442
 443         *start = omap_current_dss_features->reg_fields[id].start;
 444         *end = omap_current_dss_features->reg_fields[id].end;
 445 }
 446
 447 void dss_features_init(void)
 448 {
 449         if (cpu_is_omap24xx())
 450                 omap_current_dss_features = &omap2_dss_features;
 451         else if (cpu_is_omap3630())
 452                 omap_current_dss_features = &omap3630_dss_features;
 453         else if (cpu_is_omap34xx())
 454                 omap_current_dss_features = &omap3430_dss_features;
 455         else if (omap_rev() == OMAP4430_REV_ES1_0)
 456                 omap_current_dss_features = &omap4430_es1_0_dss_features;
 457         else if (cpu_is_omap44xx())
 458                 omap_current_dss_features = &omap4_dss_features;
 459         else
 460                 DSSWARN("Unsupported OMAP version");
 461 }