Benjamin Gaignard | cdfbff7 | 2014-07-30 19:26:17 +0200 | [diff] [blame] | 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 | /* glue registers */ |
| 20 | #define TVO_CSC_MAIN_M0 0x000 |
| 21 | #define TVO_CSC_MAIN_M1 0x004 |
| 22 | #define TVO_CSC_MAIN_M2 0x008 |
| 23 | #define TVO_CSC_MAIN_M3 0x00c |
| 24 | #define TVO_CSC_MAIN_M4 0x010 |
| 25 | #define TVO_CSC_MAIN_M5 0x014 |
| 26 | #define TVO_CSC_MAIN_M6 0x018 |
| 27 | #define TVO_CSC_MAIN_M7 0x01c |
| 28 | #define TVO_MAIN_IN_VID_FORMAT 0x030 |
| 29 | #define TVO_CSC_AUX_M0 0x100 |
| 30 | #define TVO_CSC_AUX_M1 0x104 |
| 31 | #define TVO_CSC_AUX_M2 0x108 |
| 32 | #define TVO_CSC_AUX_M3 0x10c |
| 33 | #define TVO_CSC_AUX_M4 0x110 |
| 34 | #define TVO_CSC_AUX_M5 0x114 |
| 35 | #define TVO_CSC_AUX_M6 0x118 |
| 36 | #define TVO_CSC_AUX_M7 0x11c |
| 37 | #define TVO_AUX_IN_VID_FORMAT 0x130 |
| 38 | #define TVO_VIP_HDF 0x400 |
| 39 | #define TVO_HD_SYNC_SEL 0x418 |
| 40 | #define TVO_HD_DAC_CFG_OFF 0x420 |
| 41 | #define TVO_VIP_HDMI 0x500 |
| 42 | #define TVO_HDMI_FORCE_COLOR_0 0x504 |
| 43 | #define TVO_HDMI_FORCE_COLOR_1 0x508 |
| 44 | #define TVO_HDMI_CLIP_VALUE_B_CB 0x50c |
| 45 | #define TVO_HDMI_CLIP_VALUE_Y_G 0x510 |
| 46 | #define TVO_HDMI_CLIP_VALUE_R_CR 0x514 |
| 47 | #define TVO_HDMI_SYNC_SEL 0x518 |
| 48 | #define TVO_HDMI_DFV_OBS 0x540 |
| 49 | |
| 50 | #define TVO_IN_FMT_SIGNED BIT(0) |
| 51 | #define TVO_SYNC_EXT BIT(4) |
| 52 | |
| 53 | #define TVO_VIP_REORDER_R_SHIFT 24 |
| 54 | #define TVO_VIP_REORDER_G_SHIFT 20 |
| 55 | #define TVO_VIP_REORDER_B_SHIFT 16 |
| 56 | #define TVO_VIP_REORDER_MASK 0x3 |
| 57 | #define TVO_VIP_REORDER_Y_G_SEL 0 |
| 58 | #define TVO_VIP_REORDER_CB_B_SEL 1 |
| 59 | #define TVO_VIP_REORDER_CR_R_SEL 2 |
| 60 | |
| 61 | #define TVO_VIP_CLIP_SHIFT 8 |
| 62 | #define TVO_VIP_CLIP_MASK 0x7 |
| 63 | #define TVO_VIP_CLIP_DISABLED 0 |
| 64 | #define TVO_VIP_CLIP_EAV_SAV 1 |
| 65 | #define TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y 2 |
| 66 | #define TVO_VIP_CLIP_LIMITED_RANGE_CB_CR 3 |
| 67 | #define TVO_VIP_CLIP_PROG_RANGE 4 |
| 68 | |
| 69 | #define TVO_VIP_RND_SHIFT 4 |
| 70 | #define TVO_VIP_RND_MASK 0x3 |
| 71 | #define TVO_VIP_RND_8BIT_ROUNDED 0 |
| 72 | #define TVO_VIP_RND_10BIT_ROUNDED 1 |
| 73 | #define TVO_VIP_RND_12BIT_ROUNDED 2 |
| 74 | |
| 75 | #define TVO_VIP_SEL_INPUT_MASK 0xf |
| 76 | #define TVO_VIP_SEL_INPUT_MAIN 0x0 |
| 77 | #define TVO_VIP_SEL_INPUT_AUX 0x8 |
| 78 | #define TVO_VIP_SEL_INPUT_FORCE_COLOR 0xf |
| 79 | #define TVO_VIP_SEL_INPUT_BYPASS_MASK 0x1 |
| 80 | #define TVO_VIP_SEL_INPUT_BYPASSED 1 |
| 81 | |
| 82 | #define TVO_SYNC_MAIN_VTG_SET_REF 0x00 |
| 83 | #define TVO_SYNC_MAIN_VTG_SET_1 0x01 |
| 84 | #define TVO_SYNC_MAIN_VTG_SET_2 0x02 |
| 85 | #define TVO_SYNC_MAIN_VTG_SET_3 0x03 |
| 86 | #define TVO_SYNC_MAIN_VTG_SET_4 0x04 |
| 87 | #define TVO_SYNC_MAIN_VTG_SET_5 0x05 |
| 88 | #define TVO_SYNC_MAIN_VTG_SET_6 0x06 |
| 89 | #define TVO_SYNC_AUX_VTG_SET_REF 0x10 |
| 90 | #define TVO_SYNC_AUX_VTG_SET_1 0x11 |
| 91 | #define TVO_SYNC_AUX_VTG_SET_2 0x12 |
| 92 | #define TVO_SYNC_AUX_VTG_SET_3 0x13 |
| 93 | #define TVO_SYNC_AUX_VTG_SET_4 0x14 |
| 94 | #define TVO_SYNC_AUX_VTG_SET_5 0x15 |
| 95 | #define TVO_SYNC_AUX_VTG_SET_6 0x16 |
| 96 | |
| 97 | #define TVO_SYNC_HD_DCS_SHIFT 8 |
| 98 | |
| 99 | #define ENCODER_MAIN_CRTC_MASK BIT(0) |
| 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 | }; |
| 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 | * @cr_r: |
| 153 | * @y_g: |
| 154 | * @cb_b: |
| 155 | */ |
| 156 | static void tvout_vip_set_color_order(struct sti_tvout *tvout, |
| 157 | u32 cr_r, u32 y_g, u32 cb_b) |
| 158 | { |
| 159 | u32 val = tvout_read(tvout, TVO_VIP_HDMI); |
| 160 | |
| 161 | val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT); |
| 162 | val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT); |
| 163 | val &= ~(TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT); |
| 164 | val |= cr_r << TVO_VIP_REORDER_R_SHIFT; |
| 165 | val |= y_g << TVO_VIP_REORDER_G_SHIFT; |
| 166 | val |= cb_b << TVO_VIP_REORDER_B_SHIFT; |
| 167 | |
| 168 | tvout_write(tvout, val, TVO_VIP_HDMI); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Set the clipping mode of a VIP |
| 173 | * |
| 174 | * @tvout: tvout structure |
| 175 | * @range: clipping range |
| 176 | */ |
| 177 | static void tvout_vip_set_clip_mode(struct sti_tvout *tvout, u32 range) |
| 178 | { |
| 179 | u32 val = tvout_read(tvout, TVO_VIP_HDMI); |
| 180 | |
| 181 | val &= ~(TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT); |
| 182 | val |= range << TVO_VIP_CLIP_SHIFT; |
| 183 | tvout_write(tvout, val, TVO_VIP_HDMI); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Set the rounded value of a VIP |
| 188 | * |
| 189 | * @tvout: tvout structure |
| 190 | * @rnd: rounded val per component |
| 191 | */ |
| 192 | static void tvout_vip_set_rnd(struct sti_tvout *tvout, u32 rnd) |
| 193 | { |
| 194 | u32 val = tvout_read(tvout, TVO_VIP_HDMI); |
| 195 | |
| 196 | val &= ~(TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT); |
| 197 | val |= rnd << TVO_VIP_RND_SHIFT; |
| 198 | tvout_write(tvout, val, TVO_VIP_HDMI); |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Select the VIP input |
| 203 | * |
| 204 | * @tvout: tvout structure |
| 205 | * @sel_input: selected_input (main/aux + conv) |
| 206 | */ |
| 207 | static void tvout_vip_set_sel_input(struct sti_tvout *tvout, |
| 208 | bool main_path, |
| 209 | bool sel_input_logic_inverted, |
| 210 | enum sti_tvout_video_out_type video_out) |
| 211 | { |
| 212 | u32 sel_input; |
| 213 | u32 val = tvout_read(tvout, TVO_VIP_HDMI); |
| 214 | |
| 215 | if (main_path) |
| 216 | sel_input = TVO_VIP_SEL_INPUT_MAIN; |
| 217 | else |
| 218 | sel_input = TVO_VIP_SEL_INPUT_AUX; |
| 219 | |
| 220 | switch (video_out) { |
| 221 | case STI_TVOUT_VIDEO_OUT_RGB: |
| 222 | sel_input |= TVO_VIP_SEL_INPUT_BYPASSED; |
| 223 | break; |
| 224 | case STI_TVOUT_VIDEO_OUT_YUV: |
| 225 | sel_input &= ~TVO_VIP_SEL_INPUT_BYPASSED; |
| 226 | break; |
| 227 | } |
| 228 | |
| 229 | /* on stih407 chip the sel_input bypass mode logic is inverted */ |
| 230 | if (sel_input_logic_inverted) |
| 231 | sel_input = sel_input ^ TVO_VIP_SEL_INPUT_BYPASS_MASK; |
| 232 | |
| 233 | val &= ~TVO_VIP_SEL_INPUT_MASK; |
| 234 | val |= sel_input; |
| 235 | tvout_write(tvout, val, TVO_VIP_HDMI); |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * Select the input video signed or unsigned |
| 240 | * |
| 241 | * @tvout: tvout structure |
| 242 | * @in_vid_signed: used video input format |
| 243 | */ |
| 244 | static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout, u32 in_vid_fmt) |
| 245 | { |
| 246 | u32 val = tvout_read(tvout, TVO_VIP_HDMI); |
| 247 | |
| 248 | val &= ~TVO_IN_FMT_SIGNED; |
| 249 | val |= in_vid_fmt; |
| 250 | tvout_write(tvout, val, TVO_MAIN_IN_VID_FORMAT); |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Start VIP block for HDMI output |
| 255 | * |
| 256 | * @tvout: pointer on tvout structure |
| 257 | * @main_path: true if main path has to be used in the vip configuration |
| 258 | * else aux path is used. |
| 259 | */ |
| 260 | static void tvout_hdmi_start(struct sti_tvout *tvout, bool main_path) |
| 261 | { |
| 262 | struct device_node *node = tvout->dev->of_node; |
| 263 | bool sel_input_logic_inverted = false; |
| 264 | |
| 265 | dev_dbg(tvout->dev, "%s\n", __func__); |
| 266 | |
| 267 | if (main_path) { |
| 268 | DRM_DEBUG_DRIVER("main vip for hdmi\n"); |
| 269 | /* select the input sync for hdmi = VTG set 1 */ |
| 270 | tvout_write(tvout, TVO_SYNC_MAIN_VTG_SET_1, TVO_HDMI_SYNC_SEL); |
| 271 | } else { |
| 272 | DRM_DEBUG_DRIVER("aux vip for hdmi\n"); |
| 273 | /* select the input sync for hdmi = VTG set 1 */ |
| 274 | tvout_write(tvout, TVO_SYNC_AUX_VTG_SET_1, TVO_HDMI_SYNC_SEL); |
| 275 | } |
| 276 | |
| 277 | /* set color channel order */ |
| 278 | tvout_vip_set_color_order(tvout, |
| 279 | TVO_VIP_REORDER_CR_R_SEL, |
| 280 | TVO_VIP_REORDER_Y_G_SEL, |
| 281 | TVO_VIP_REORDER_CB_B_SEL); |
| 282 | |
| 283 | /* set clipping mode (Limited range RGB/Y) */ |
| 284 | tvout_vip_set_clip_mode(tvout, TVO_VIP_CLIP_LIMITED_RANGE_RGB_Y); |
| 285 | |
| 286 | /* set round mode (rounded to 8-bit per component) */ |
| 287 | tvout_vip_set_rnd(tvout, TVO_VIP_RND_8BIT_ROUNDED); |
| 288 | |
| 289 | if (of_device_is_compatible(node, "st,stih407-tvout")) { |
| 290 | /* set input video format */ |
| 291 | tvout_vip_set_in_vid_fmt(tvout->regs + TVO_MAIN_IN_VID_FORMAT, |
| 292 | TVO_IN_FMT_SIGNED); |
| 293 | sel_input_logic_inverted = true; |
| 294 | } |
| 295 | |
| 296 | /* input selection */ |
| 297 | tvout_vip_set_sel_input(tvout, main_path, |
| 298 | sel_input_logic_inverted, STI_TVOUT_VIDEO_OUT_RGB); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Start HDF VIP and HD DAC |
| 303 | * |
| 304 | * @tvout: pointer on tvout structure |
| 305 | * @main_path: true if main path has to be used in the vip configuration |
| 306 | * else aux path is used. |
| 307 | */ |
| 308 | static void tvout_hda_start(struct sti_tvout *tvout, bool main_path) |
| 309 | { |
| 310 | struct device_node *node = tvout->dev->of_node; |
| 311 | bool sel_input_logic_inverted = false; |
| 312 | |
| 313 | dev_dbg(tvout->dev, "%s\n", __func__); |
| 314 | |
| 315 | if (!main_path) { |
| 316 | DRM_ERROR("HD Analog on aux not implemented\n"); |
| 317 | return; |
| 318 | } |
| 319 | |
| 320 | DRM_DEBUG_DRIVER("main vip for HDF\n"); |
| 321 | |
| 322 | /* set color channel order */ |
| 323 | tvout_vip_set_color_order(tvout->regs + TVO_VIP_HDF, |
| 324 | TVO_VIP_REORDER_CR_R_SEL, |
| 325 | TVO_VIP_REORDER_Y_G_SEL, |
| 326 | TVO_VIP_REORDER_CB_B_SEL); |
| 327 | |
| 328 | /* set clipping mode (Limited range RGB/Y) */ |
| 329 | tvout_vip_set_clip_mode(tvout->regs + TVO_VIP_HDF, |
| 330 | TVO_VIP_CLIP_LIMITED_RANGE_CB_CR); |
| 331 | |
| 332 | /* set round mode (rounded to 10-bit per component) */ |
| 333 | tvout_vip_set_rnd(tvout->regs + TVO_VIP_HDF, TVO_VIP_RND_10BIT_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_FMT_SIGNED); |
| 338 | sel_input_logic_inverted = true; |
| 339 | } |
| 340 | |
| 341 | /* Input selection */ |
| 342 | tvout_vip_set_sel_input(tvout->regs + TVO_VIP_HDF, |
| 343 | main_path, |
| 344 | sel_input_logic_inverted, |
| 345 | STI_TVOUT_VIDEO_OUT_YUV); |
| 346 | |
| 347 | /* select the input sync for HD analog = VTG set 3 |
| 348 | * and HD DCS = VTG set 2 */ |
| 349 | tvout_write(tvout, |
| 350 | (TVO_SYNC_MAIN_VTG_SET_2 << TVO_SYNC_HD_DCS_SHIFT) |
| 351 | | TVO_SYNC_MAIN_VTG_SET_3, |
| 352 | TVO_HD_SYNC_SEL); |
| 353 | |
| 354 | /* power up HD DAC */ |
| 355 | tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF); |
| 356 | } |
| 357 | |
| 358 | static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 359 | { |
| 360 | } |
| 361 | |
| 362 | static bool sti_tvout_encoder_mode_fixup(struct drm_encoder *encoder, |
| 363 | const struct drm_display_mode *mode, |
| 364 | struct drm_display_mode *adjusted_mode) |
| 365 | { |
| 366 | return true; |
| 367 | } |
| 368 | |
| 369 | static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder, |
| 370 | struct drm_display_mode *mode, |
| 371 | struct drm_display_mode *adjusted_mode) |
| 372 | { |
| 373 | } |
| 374 | |
| 375 | static void sti_tvout_encoder_prepare(struct drm_encoder *encoder) |
| 376 | { |
| 377 | } |
| 378 | |
| 379 | static void sti_tvout_encoder_destroy(struct drm_encoder *encoder) |
| 380 | { |
| 381 | struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder); |
| 382 | |
| 383 | drm_encoder_cleanup(encoder); |
| 384 | kfree(sti_encoder); |
| 385 | } |
| 386 | |
| 387 | static const struct drm_encoder_funcs sti_tvout_encoder_funcs = { |
| 388 | .destroy = sti_tvout_encoder_destroy, |
| 389 | }; |
| 390 | |
| 391 | static void sti_hda_encoder_commit(struct drm_encoder *encoder) |
| 392 | { |
| 393 | struct sti_tvout *tvout = to_sti_tvout(encoder); |
| 394 | |
| 395 | tvout_hda_start(tvout, true); |
| 396 | } |
| 397 | |
| 398 | static void sti_hda_encoder_disable(struct drm_encoder *encoder) |
| 399 | { |
| 400 | struct sti_tvout *tvout = to_sti_tvout(encoder); |
| 401 | |
| 402 | /* reset VIP register */ |
| 403 | tvout_write(tvout, 0x0, TVO_VIP_HDF); |
| 404 | |
| 405 | /* power down HD DAC */ |
| 406 | tvout_write(tvout, 1, TVO_HD_DAC_CFG_OFF); |
| 407 | } |
| 408 | |
| 409 | static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = { |
| 410 | .dpms = sti_tvout_encoder_dpms, |
| 411 | .mode_fixup = sti_tvout_encoder_mode_fixup, |
| 412 | .mode_set = sti_tvout_encoder_mode_set, |
| 413 | .prepare = sti_tvout_encoder_prepare, |
| 414 | .commit = sti_hda_encoder_commit, |
| 415 | .disable = sti_hda_encoder_disable, |
| 416 | }; |
| 417 | |
| 418 | static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev, |
| 419 | struct sti_tvout *tvout) |
| 420 | { |
| 421 | struct sti_tvout_encoder *encoder; |
| 422 | struct drm_encoder *drm_encoder; |
| 423 | |
| 424 | encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL); |
| 425 | if (!encoder) |
| 426 | return NULL; |
| 427 | |
| 428 | encoder->tvout = tvout; |
| 429 | |
| 430 | drm_encoder = (struct drm_encoder *) encoder; |
| 431 | |
| 432 | drm_encoder->possible_crtcs = ENCODER_MAIN_CRTC_MASK; |
| 433 | drm_encoder->possible_clones = 1 << 0; |
| 434 | |
| 435 | drm_encoder_init(dev, drm_encoder, |
| 436 | &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_DAC); |
| 437 | |
| 438 | drm_encoder_helper_add(drm_encoder, &sti_hda_encoder_helper_funcs); |
| 439 | |
| 440 | return drm_encoder; |
| 441 | } |
| 442 | |
| 443 | static void sti_hdmi_encoder_commit(struct drm_encoder *encoder) |
| 444 | { |
| 445 | struct sti_tvout *tvout = to_sti_tvout(encoder); |
| 446 | |
| 447 | tvout_hdmi_start(tvout, true); |
| 448 | } |
| 449 | |
| 450 | static void sti_hdmi_encoder_disable(struct drm_encoder *encoder) |
| 451 | { |
| 452 | struct sti_tvout *tvout = to_sti_tvout(encoder); |
| 453 | |
| 454 | /* reset VIP register */ |
| 455 | tvout_write(tvout, 0x0, TVO_VIP_HDMI); |
| 456 | } |
| 457 | |
| 458 | static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = { |
| 459 | .dpms = sti_tvout_encoder_dpms, |
| 460 | .mode_fixup = sti_tvout_encoder_mode_fixup, |
| 461 | .mode_set = sti_tvout_encoder_mode_set, |
| 462 | .prepare = sti_tvout_encoder_prepare, |
| 463 | .commit = sti_hdmi_encoder_commit, |
| 464 | .disable = sti_hdmi_encoder_disable, |
| 465 | }; |
| 466 | |
| 467 | static struct drm_encoder *sti_tvout_create_hdmi_encoder(struct drm_device *dev, |
| 468 | struct sti_tvout *tvout) |
| 469 | { |
| 470 | struct sti_tvout_encoder *encoder; |
| 471 | struct drm_encoder *drm_encoder; |
| 472 | |
| 473 | encoder = devm_kzalloc(tvout->dev, sizeof(*encoder), GFP_KERNEL); |
| 474 | if (!encoder) |
| 475 | return NULL; |
| 476 | |
| 477 | encoder->tvout = tvout; |
| 478 | |
| 479 | drm_encoder = (struct drm_encoder *) encoder; |
| 480 | |
| 481 | drm_encoder->possible_crtcs = ENCODER_MAIN_CRTC_MASK; |
| 482 | drm_encoder->possible_clones = 1 << 1; |
| 483 | |
| 484 | drm_encoder_init(dev, drm_encoder, |
| 485 | &sti_tvout_encoder_funcs, DRM_MODE_ENCODER_TMDS); |
| 486 | |
| 487 | drm_encoder_helper_add(drm_encoder, &sti_hdmi_encoder_helper_funcs); |
| 488 | |
| 489 | return drm_encoder; |
| 490 | } |
| 491 | |
| 492 | static void sti_tvout_create_encoders(struct drm_device *dev, |
| 493 | struct sti_tvout *tvout) |
| 494 | { |
| 495 | tvout->hdmi = sti_tvout_create_hdmi_encoder(dev, tvout); |
| 496 | tvout->hda = sti_tvout_create_hda_encoder(dev, tvout); |
| 497 | } |
| 498 | |
| 499 | static void sti_tvout_destroy_encoders(struct sti_tvout *tvout) |
| 500 | { |
| 501 | if (tvout->hdmi) |
| 502 | drm_encoder_cleanup(tvout->hdmi); |
| 503 | tvout->hdmi = NULL; |
| 504 | |
| 505 | if (tvout->hda) |
| 506 | drm_encoder_cleanup(tvout->hda); |
| 507 | tvout->hda = NULL; |
| 508 | } |
| 509 | |
| 510 | static int sti_tvout_bind(struct device *dev, struct device *master, void *data) |
| 511 | { |
| 512 | struct sti_tvout *tvout = dev_get_drvdata(dev); |
| 513 | struct drm_device *drm_dev = data; |
| 514 | unsigned int i; |
| 515 | int ret; |
| 516 | |
| 517 | tvout->drm_dev = drm_dev; |
| 518 | |
| 519 | /* set preformatter matrix */ |
| 520 | for (i = 0; i < 8; i++) { |
| 521 | tvout_write(tvout, rgb_to_ycbcr_601[i], |
| 522 | TVO_CSC_MAIN_M0 + (i * 4)); |
| 523 | tvout_write(tvout, rgb_to_ycbcr_601[i], |
| 524 | TVO_CSC_AUX_M0 + (i * 4)); |
| 525 | } |
| 526 | |
| 527 | sti_tvout_create_encoders(drm_dev, tvout); |
| 528 | |
| 529 | ret = component_bind_all(dev, drm_dev); |
| 530 | if (ret) |
| 531 | sti_tvout_destroy_encoders(tvout); |
| 532 | |
| 533 | return ret; |
| 534 | } |
| 535 | |
| 536 | static void sti_tvout_unbind(struct device *dev, struct device *master, |
| 537 | void *data) |
| 538 | { |
| 539 | /* do nothing */ |
| 540 | } |
| 541 | |
| 542 | static const struct component_ops sti_tvout_ops = { |
| 543 | .bind = sti_tvout_bind, |
| 544 | .unbind = sti_tvout_unbind, |
| 545 | }; |
| 546 | |
| 547 | static int compare_of(struct device *dev, void *data) |
| 548 | { |
| 549 | return dev->of_node == data; |
| 550 | } |
| 551 | |
| 552 | static int sti_tvout_master_bind(struct device *dev) |
| 553 | { |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | static void sti_tvout_master_unbind(struct device *dev) |
| 558 | { |
| 559 | /* do nothing */ |
| 560 | } |
| 561 | |
| 562 | static const struct component_master_ops sti_tvout_master_ops = { |
| 563 | .bind = sti_tvout_master_bind, |
| 564 | .unbind = sti_tvout_master_unbind, |
| 565 | }; |
| 566 | |
| 567 | static int sti_tvout_probe(struct platform_device *pdev) |
| 568 | { |
| 569 | struct device *dev = &pdev->dev; |
| 570 | struct device_node *node = dev->of_node; |
| 571 | struct sti_tvout *tvout; |
| 572 | struct resource *res; |
| 573 | struct device_node *child_np; |
| 574 | struct component_match *match = NULL; |
| 575 | |
| 576 | DRM_INFO("%s\n", __func__); |
| 577 | |
| 578 | if (!node) |
| 579 | return -ENODEV; |
| 580 | |
| 581 | tvout = devm_kzalloc(dev, sizeof(*tvout), GFP_KERNEL); |
| 582 | if (!tvout) |
| 583 | return -ENOMEM; |
| 584 | |
| 585 | tvout->dev = dev; |
| 586 | |
| 587 | /* get Memory ressources */ |
| 588 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tvout-reg"); |
| 589 | if (!res) { |
| 590 | DRM_ERROR("Invalid glue resource\n"); |
| 591 | return -ENOMEM; |
| 592 | } |
| 593 | tvout->regs = devm_ioremap_nocache(dev, res->start, resource_size(res)); |
| 594 | if (IS_ERR(tvout->regs)) |
| 595 | return PTR_ERR(tvout->regs); |
| 596 | |
| 597 | /* get reset resources */ |
| 598 | tvout->reset = devm_reset_control_get(dev, "tvout"); |
| 599 | /* take tvout out of reset */ |
| 600 | if (!IS_ERR(tvout->reset)) |
| 601 | reset_control_deassert(tvout->reset); |
| 602 | |
| 603 | platform_set_drvdata(pdev, tvout); |
| 604 | |
| 605 | of_platform_populate(node, NULL, NULL, dev); |
| 606 | |
| 607 | child_np = of_get_next_available_child(node, NULL); |
| 608 | |
| 609 | while (child_np) { |
| 610 | component_match_add(dev, &match, compare_of, child_np); |
| 611 | of_node_put(child_np); |
| 612 | child_np = of_get_next_available_child(node, child_np); |
| 613 | } |
| 614 | |
| 615 | component_master_add_with_match(dev, &sti_tvout_master_ops, match); |
| 616 | |
| 617 | return component_add(dev, &sti_tvout_ops); |
| 618 | } |
| 619 | |
| 620 | static int sti_tvout_remove(struct platform_device *pdev) |
| 621 | { |
| 622 | component_master_del(&pdev->dev, &sti_tvout_master_ops); |
| 623 | component_del(&pdev->dev, &sti_tvout_ops); |
| 624 | return 0; |
| 625 | } |
| 626 | |
| 627 | static struct of_device_id tvout_of_match[] = { |
| 628 | { .compatible = "st,stih416-tvout", }, |
| 629 | { .compatible = "st,stih407-tvout", }, |
| 630 | { /* end node */ } |
| 631 | }; |
| 632 | MODULE_DEVICE_TABLE(of, tvout_of_match); |
| 633 | |
| 634 | struct platform_driver sti_tvout_driver = { |
| 635 | .driver = { |
| 636 | .name = "sti-tvout", |
| 637 | .owner = THIS_MODULE, |
| 638 | .of_match_table = tvout_of_match, |
| 639 | }, |
| 640 | .probe = sti_tvout_probe, |
| 641 | .remove = sti_tvout_remove, |
| 642 | }; |
| 643 | |
| 644 | module_platform_driver(sti_tvout_driver); |
| 645 | |
| 646 | MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>"); |
| 647 | MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver"); |
| 648 | MODULE_LICENSE("GPL"); |