Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 1 | /* |
| 2 | * shmob_drm_crtc.c -- SH Mobile DRM CRTCs |
| 3 | * |
Laurent Pinchart | 9588b82 | 2014-02-06 18:13:52 +0100 | [diff] [blame] | 4 | * Copyright (C) 2012 Renesas Electronics Corporation |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 5 | * |
| 6 | * Laurent Pinchart (laurent.pinchart@ideasonboard.com) |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/backlight.h> |
| 15 | #include <linux/clk.h> |
| 16 | |
| 17 | #include <drm/drmP.h> |
| 18 | #include <drm/drm_crtc.h> |
| 19 | #include <drm/drm_crtc_helper.h> |
| 20 | #include <drm/drm_fb_cma_helper.h> |
| 21 | #include <drm/drm_gem_cma_helper.h> |
Daniel Vetter | 3cb9ae4 | 2014-10-29 10:03:57 +0100 | [diff] [blame] | 22 | #include <drm/drm_plane_helper.h> |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 23 | |
| 24 | #include <video/sh_mobile_meram.h> |
| 25 | |
| 26 | #include "shmob_drm_backlight.h" |
| 27 | #include "shmob_drm_crtc.h" |
| 28 | #include "shmob_drm_drv.h" |
| 29 | #include "shmob_drm_kms.h" |
| 30 | #include "shmob_drm_plane.h" |
| 31 | #include "shmob_drm_regs.h" |
| 32 | |
| 33 | /* |
| 34 | * TODO: panel support |
| 35 | */ |
| 36 | |
| 37 | /* ----------------------------------------------------------------------------- |
| 38 | * Clock management |
| 39 | */ |
| 40 | |
Laurent Pinchart | c0c72a8 | 2013-12-02 01:52:20 +0100 | [diff] [blame] | 41 | static int shmob_drm_clk_on(struct shmob_drm_device *sdev) |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 42 | { |
Laurent Pinchart | c0c72a8 | 2013-12-02 01:52:20 +0100 | [diff] [blame] | 43 | int ret; |
| 44 | |
| 45 | if (sdev->clock) { |
| 46 | ret = clk_prepare_enable(sdev->clock); |
| 47 | if (ret < 0) |
| 48 | return ret; |
| 49 | } |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 50 | #if 0 |
| 51 | if (sdev->meram_dev && sdev->meram_dev->pdev) |
| 52 | pm_runtime_get_sync(&sdev->meram_dev->pdev->dev); |
| 53 | #endif |
Laurent Pinchart | c0c72a8 | 2013-12-02 01:52:20 +0100 | [diff] [blame] | 54 | |
| 55 | return 0; |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | static void shmob_drm_clk_off(struct shmob_drm_device *sdev) |
| 59 | { |
| 60 | #if 0 |
| 61 | if (sdev->meram_dev && sdev->meram_dev->pdev) |
| 62 | pm_runtime_put_sync(&sdev->meram_dev->pdev->dev); |
| 63 | #endif |
| 64 | if (sdev->clock) |
Laurent Pinchart | 8d01e1e | 2013-10-28 23:49:22 +0100 | [diff] [blame] | 65 | clk_disable_unprepare(sdev->clock); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 66 | } |
| 67 | |
| 68 | /* ----------------------------------------------------------------------------- |
| 69 | * CRTC |
| 70 | */ |
| 71 | |
| 72 | static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc) |
| 73 | { |
| 74 | struct drm_crtc *crtc = &scrtc->crtc; |
| 75 | struct shmob_drm_device *sdev = crtc->dev->dev_private; |
| 76 | const struct shmob_drm_interface_data *idata = &sdev->pdata->iface; |
| 77 | const struct drm_display_mode *mode = &crtc->mode; |
| 78 | u32 value; |
| 79 | |
| 80 | value = sdev->ldmt1r |
| 81 | | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL) |
| 82 | | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL) |
| 83 | | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0) |
| 84 | | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0) |
| 85 | | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0) |
| 86 | | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0) |
| 87 | | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0); |
| 88 | lcdc_write(sdev, LDMT1R, value); |
| 89 | |
| 90 | if (idata->interface >= SHMOB_DRM_IFACE_SYS8A && |
| 91 | idata->interface <= SHMOB_DRM_IFACE_SYS24) { |
| 92 | /* Setup SYS bus. */ |
| 93 | value = (idata->sys.cs_setup << LDMT2R_CSUP_SHIFT) |
| 94 | | (idata->sys.vsync_active_high ? LDMT2R_RSV : 0) |
| 95 | | (idata->sys.vsync_dir_input ? LDMT2R_VSEL : 0) |
| 96 | | (idata->sys.write_setup << LDMT2R_WCSC_SHIFT) |
| 97 | | (idata->sys.write_cycle << LDMT2R_WCEC_SHIFT) |
| 98 | | (idata->sys.write_strobe << LDMT2R_WCLW_SHIFT); |
| 99 | lcdc_write(sdev, LDMT2R, value); |
| 100 | |
| 101 | value = (idata->sys.read_latch << LDMT3R_RDLC_SHIFT) |
| 102 | | (idata->sys.read_setup << LDMT3R_RCSC_SHIFT) |
| 103 | | (idata->sys.read_cycle << LDMT3R_RCEC_SHIFT) |
| 104 | | (idata->sys.read_strobe << LDMT3R_RCLW_SHIFT); |
| 105 | lcdc_write(sdev, LDMT3R, value); |
| 106 | } |
| 107 | |
| 108 | value = ((mode->hdisplay / 8) << 16) /* HDCN */ |
| 109 | | (mode->htotal / 8); /* HTCN */ |
| 110 | lcdc_write(sdev, LDHCNR, value); |
| 111 | |
| 112 | value = (((mode->hsync_end - mode->hsync_start) / 8) << 16) /* HSYNW */ |
| 113 | | (mode->hsync_start / 8); /* HSYNP */ |
| 114 | lcdc_write(sdev, LDHSYNR, value); |
| 115 | |
| 116 | value = ((mode->hdisplay & 7) << 24) | ((mode->htotal & 7) << 16) |
| 117 | | (((mode->hsync_end - mode->hsync_start) & 7) << 8) |
| 118 | | (mode->hsync_start & 7); |
| 119 | lcdc_write(sdev, LDHAJR, value); |
| 120 | |
| 121 | value = ((mode->vdisplay) << 16) /* VDLN */ |
| 122 | | mode->vtotal; /* VTLN */ |
| 123 | lcdc_write(sdev, LDVLNR, value); |
| 124 | |
| 125 | value = ((mode->vsync_end - mode->vsync_start) << 16) /* VSYNW */ |
| 126 | | mode->vsync_start; /* VSYNP */ |
| 127 | lcdc_write(sdev, LDVSYNR, value); |
| 128 | } |
| 129 | |
| 130 | static void shmob_drm_crtc_start_stop(struct shmob_drm_crtc *scrtc, bool start) |
| 131 | { |
| 132 | struct shmob_drm_device *sdev = scrtc->crtc.dev->dev_private; |
| 133 | u32 value; |
| 134 | |
| 135 | value = lcdc_read(sdev, LDCNT2R); |
| 136 | if (start) |
| 137 | lcdc_write(sdev, LDCNT2R, value | LDCNT2R_DO); |
| 138 | else |
| 139 | lcdc_write(sdev, LDCNT2R, value & ~LDCNT2R_DO); |
| 140 | |
| 141 | /* Wait until power is applied/stopped. */ |
| 142 | while (1) { |
| 143 | value = lcdc_read(sdev, LDPMR) & LDPMR_LPS; |
| 144 | if ((start && value) || (!start && !value)) |
| 145 | break; |
| 146 | |
| 147 | cpu_relax(); |
| 148 | } |
| 149 | |
| 150 | if (!start) { |
| 151 | /* Stop the dot clock. */ |
| 152 | lcdc_write(sdev, LDDCKSTPR, LDDCKSTPR_DCKSTP); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | /* |
| 157 | * shmob_drm_crtc_start - Configure and start the LCDC |
| 158 | * @scrtc: the SH Mobile CRTC |
| 159 | * |
| 160 | * Configure and start the LCDC device. External devices (clocks, MERAM, panels, |
| 161 | * ...) are not touched by this function. |
| 162 | */ |
| 163 | static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc) |
| 164 | { |
| 165 | struct drm_crtc *crtc = &scrtc->crtc; |
| 166 | struct shmob_drm_device *sdev = crtc->dev->dev_private; |
| 167 | const struct shmob_drm_interface_data *idata = &sdev->pdata->iface; |
| 168 | const struct shmob_drm_format_info *format; |
| 169 | struct drm_device *dev = sdev->ddev; |
| 170 | struct drm_plane *plane; |
| 171 | u32 value; |
Laurent Pinchart | c0c72a8 | 2013-12-02 01:52:20 +0100 | [diff] [blame] | 172 | int ret; |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 173 | |
| 174 | if (scrtc->started) |
| 175 | return; |
| 176 | |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 177 | format = shmob_drm_format_info(crtc->primary->fb->pixel_format); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 178 | if (WARN_ON(format == NULL)) |
| 179 | return; |
| 180 | |
| 181 | /* Enable clocks before accessing the hardware. */ |
Laurent Pinchart | c0c72a8 | 2013-12-02 01:52:20 +0100 | [diff] [blame] | 182 | ret = shmob_drm_clk_on(sdev); |
| 183 | if (ret < 0) |
| 184 | return; |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 185 | |
| 186 | /* Reset and enable the LCDC. */ |
| 187 | lcdc_write(sdev, LDCNT2R, lcdc_read(sdev, LDCNT2R) | LDCNT2R_BR); |
| 188 | lcdc_wait_bit(sdev, LDCNT2R, LDCNT2R_BR, 0); |
| 189 | lcdc_write(sdev, LDCNT2R, LDCNT2R_ME); |
| 190 | |
| 191 | /* Stop the LCDC first and disable all interrupts. */ |
| 192 | shmob_drm_crtc_start_stop(scrtc, false); |
| 193 | lcdc_write(sdev, LDINTR, 0); |
| 194 | |
| 195 | /* Configure power supply, dot clocks and start them. */ |
| 196 | lcdc_write(sdev, LDPMR, 0); |
| 197 | |
| 198 | value = sdev->lddckr; |
| 199 | if (idata->clk_div) { |
| 200 | /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider |
| 201 | * denominator. |
| 202 | */ |
| 203 | lcdc_write(sdev, LDDCKPAT1R, 0); |
| 204 | lcdc_write(sdev, LDDCKPAT2R, (1 << (idata->clk_div / 2)) - 1); |
| 205 | |
| 206 | if (idata->clk_div == 1) |
| 207 | value |= LDDCKR_MOSEL; |
| 208 | else |
| 209 | value |= idata->clk_div; |
| 210 | } |
| 211 | |
| 212 | lcdc_write(sdev, LDDCKR, value); |
| 213 | lcdc_write(sdev, LDDCKSTPR, 0); |
| 214 | lcdc_wait_bit(sdev, LDDCKSTPR, ~0, 0); |
| 215 | |
| 216 | /* TODO: Setup SYS panel */ |
| 217 | |
| 218 | /* Setup geometry, format, frame buffer memory and operation mode. */ |
| 219 | shmob_drm_crtc_setup_geometry(scrtc); |
| 220 | |
| 221 | /* TODO: Handle YUV colorspaces. Hardcode REC709 for now. */ |
| 222 | lcdc_write(sdev, LDDFR, format->lddfr | LDDFR_CF1); |
| 223 | lcdc_write(sdev, LDMLSR, scrtc->line_size); |
| 224 | lcdc_write(sdev, LDSA1R, scrtc->dma[0]); |
| 225 | if (format->yuv) |
| 226 | lcdc_write(sdev, LDSA2R, scrtc->dma[1]); |
| 227 | lcdc_write(sdev, LDSM1R, 0); |
| 228 | |
| 229 | /* Word and long word swap. */ |
| 230 | switch (format->fourcc) { |
| 231 | case DRM_FORMAT_RGB565: |
| 232 | case DRM_FORMAT_NV21: |
| 233 | case DRM_FORMAT_NV61: |
| 234 | case DRM_FORMAT_NV42: |
| 235 | value = LDDDSR_LS | LDDDSR_WS; |
| 236 | break; |
| 237 | case DRM_FORMAT_RGB888: |
| 238 | case DRM_FORMAT_NV12: |
| 239 | case DRM_FORMAT_NV16: |
| 240 | case DRM_FORMAT_NV24: |
| 241 | value = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS; |
| 242 | break; |
| 243 | case DRM_FORMAT_ARGB8888: |
| 244 | default: |
| 245 | value = LDDDSR_LS; |
| 246 | break; |
| 247 | } |
| 248 | lcdc_write(sdev, LDDDSR, value); |
| 249 | |
| 250 | /* Setup planes. */ |
Matt Roper | 2b79dc1 | 2014-04-01 15:22:33 -0700 | [diff] [blame] | 251 | drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) { |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 252 | if (plane->crtc == crtc) |
| 253 | shmob_drm_plane_setup(plane); |
| 254 | } |
| 255 | |
| 256 | /* Enable the display output. */ |
| 257 | lcdc_write(sdev, LDCNT1R, LDCNT1R_DE); |
| 258 | |
| 259 | shmob_drm_crtc_start_stop(scrtc, true); |
| 260 | |
| 261 | scrtc->started = true; |
| 262 | } |
| 263 | |
| 264 | static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc) |
| 265 | { |
| 266 | struct drm_crtc *crtc = &scrtc->crtc; |
| 267 | struct shmob_drm_device *sdev = crtc->dev->dev_private; |
| 268 | |
| 269 | if (!scrtc->started) |
| 270 | return; |
| 271 | |
| 272 | /* Disable the MERAM cache. */ |
| 273 | if (scrtc->cache) { |
| 274 | sh_mobile_meram_cache_free(sdev->meram, scrtc->cache); |
| 275 | scrtc->cache = NULL; |
| 276 | } |
| 277 | |
| 278 | /* Stop the LCDC. */ |
| 279 | shmob_drm_crtc_start_stop(scrtc, false); |
| 280 | |
| 281 | /* Disable the display output. */ |
| 282 | lcdc_write(sdev, LDCNT1R, 0); |
| 283 | |
| 284 | /* Stop clocks. */ |
| 285 | shmob_drm_clk_off(sdev); |
| 286 | |
| 287 | scrtc->started = false; |
| 288 | } |
| 289 | |
| 290 | void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc) |
| 291 | { |
| 292 | shmob_drm_crtc_stop(scrtc); |
| 293 | } |
| 294 | |
| 295 | void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc) |
| 296 | { |
| 297 | if (scrtc->dpms != DRM_MODE_DPMS_ON) |
| 298 | return; |
| 299 | |
| 300 | shmob_drm_crtc_start(scrtc); |
| 301 | } |
| 302 | |
| 303 | static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc, |
| 304 | int x, int y) |
| 305 | { |
| 306 | struct drm_crtc *crtc = &scrtc->crtc; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 307 | struct drm_framebuffer *fb = crtc->primary->fb; |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 308 | struct shmob_drm_device *sdev = crtc->dev->dev_private; |
| 309 | struct drm_gem_cma_object *gem; |
| 310 | unsigned int bpp; |
| 311 | |
| 312 | bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp; |
| 313 | gem = drm_fb_cma_get_gem_obj(fb, 0); |
| 314 | scrtc->dma[0] = gem->paddr + fb->offsets[0] |
| 315 | + y * fb->pitches[0] + x * bpp / 8; |
| 316 | |
| 317 | if (scrtc->format->yuv) { |
| 318 | bpp = scrtc->format->bpp - 8; |
| 319 | gem = drm_fb_cma_get_gem_obj(fb, 1); |
| 320 | scrtc->dma[1] = gem->paddr + fb->offsets[1] |
| 321 | + y / (bpp == 4 ? 2 : 1) * fb->pitches[1] |
| 322 | + x * (bpp == 16 ? 2 : 1); |
| 323 | } |
| 324 | |
| 325 | if (scrtc->cache) |
| 326 | sh_mobile_meram_cache_update(sdev->meram, scrtc->cache, |
| 327 | scrtc->dma[0], scrtc->dma[1], |
| 328 | &scrtc->dma[0], &scrtc->dma[1]); |
| 329 | } |
| 330 | |
| 331 | static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc) |
| 332 | { |
| 333 | struct drm_crtc *crtc = &scrtc->crtc; |
| 334 | struct shmob_drm_device *sdev = crtc->dev->dev_private; |
| 335 | |
| 336 | shmob_drm_crtc_compute_base(scrtc, crtc->x, crtc->y); |
| 337 | |
| 338 | lcdc_write_mirror(sdev, LDSA1R, scrtc->dma[0]); |
| 339 | if (scrtc->format->yuv) |
| 340 | lcdc_write_mirror(sdev, LDSA2R, scrtc->dma[1]); |
| 341 | |
| 342 | lcdc_write(sdev, LDRCNTR, lcdc_read(sdev, LDRCNTR) ^ LDRCNTR_MRS); |
| 343 | } |
| 344 | |
| 345 | #define to_shmob_crtc(c) container_of(c, struct shmob_drm_crtc, crtc) |
| 346 | |
| 347 | static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int mode) |
| 348 | { |
| 349 | struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc); |
| 350 | |
| 351 | if (scrtc->dpms == mode) |
| 352 | return; |
| 353 | |
| 354 | if (mode == DRM_MODE_DPMS_ON) |
| 355 | shmob_drm_crtc_start(scrtc); |
| 356 | else |
| 357 | shmob_drm_crtc_stop(scrtc); |
| 358 | |
| 359 | scrtc->dpms = mode; |
| 360 | } |
| 361 | |
| 362 | static bool shmob_drm_crtc_mode_fixup(struct drm_crtc *crtc, |
| 363 | const struct drm_display_mode *mode, |
| 364 | struct drm_display_mode *adjusted_mode) |
| 365 | { |
| 366 | return true; |
| 367 | } |
| 368 | |
| 369 | static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc) |
| 370 | { |
| 371 | shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); |
| 372 | } |
| 373 | |
| 374 | static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc, |
| 375 | struct drm_display_mode *mode, |
| 376 | struct drm_display_mode *adjusted_mode, |
| 377 | int x, int y, |
| 378 | struct drm_framebuffer *old_fb) |
| 379 | { |
| 380 | struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc); |
| 381 | struct shmob_drm_device *sdev = crtc->dev->dev_private; |
| 382 | const struct sh_mobile_meram_cfg *mdata = sdev->pdata->meram; |
| 383 | const struct shmob_drm_format_info *format; |
| 384 | void *cache; |
| 385 | |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 386 | format = shmob_drm_format_info(crtc->primary->fb->pixel_format); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 387 | if (format == NULL) { |
| 388 | dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n", |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 389 | crtc->primary->fb->pixel_format); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 390 | return -EINVAL; |
| 391 | } |
| 392 | |
| 393 | scrtc->format = format; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 394 | scrtc->line_size = crtc->primary->fb->pitches[0]; |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 395 | |
| 396 | if (sdev->meram) { |
| 397 | /* Enable MERAM cache if configured. We need to de-init |
| 398 | * configured ICBs before we can re-initialize them. |
| 399 | */ |
| 400 | if (scrtc->cache) { |
| 401 | sh_mobile_meram_cache_free(sdev->meram, scrtc->cache); |
| 402 | scrtc->cache = NULL; |
| 403 | } |
| 404 | |
| 405 | cache = sh_mobile_meram_cache_alloc(sdev->meram, mdata, |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 406 | crtc->primary->fb->pitches[0], |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 407 | adjusted_mode->vdisplay, |
| 408 | format->meram, |
| 409 | &scrtc->line_size); |
| 410 | if (!IS_ERR(cache)) |
| 411 | scrtc->cache = cache; |
| 412 | } |
| 413 | |
| 414 | shmob_drm_crtc_compute_base(scrtc, x, y); |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc) |
| 420 | { |
| 421 | shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON); |
| 422 | } |
| 423 | |
| 424 | static int shmob_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, |
| 425 | struct drm_framebuffer *old_fb) |
| 426 | { |
| 427 | shmob_drm_crtc_update_base(to_shmob_crtc(crtc)); |
| 428 | |
| 429 | return 0; |
| 430 | } |
| 431 | |
| 432 | static const struct drm_crtc_helper_funcs crtc_helper_funcs = { |
| 433 | .dpms = shmob_drm_crtc_dpms, |
| 434 | .mode_fixup = shmob_drm_crtc_mode_fixup, |
| 435 | .prepare = shmob_drm_crtc_mode_prepare, |
| 436 | .commit = shmob_drm_crtc_mode_commit, |
| 437 | .mode_set = shmob_drm_crtc_mode_set, |
| 438 | .mode_set_base = shmob_drm_crtc_mode_set_base, |
| 439 | }; |
| 440 | |
| 441 | void shmob_drm_crtc_cancel_page_flip(struct shmob_drm_crtc *scrtc, |
| 442 | struct drm_file *file) |
| 443 | { |
| 444 | struct drm_pending_vblank_event *event; |
| 445 | struct drm_device *dev = scrtc->crtc.dev; |
| 446 | unsigned long flags; |
| 447 | |
| 448 | /* Destroy the pending vertical blanking event associated with the |
| 449 | * pending page flip, if any, and disable vertical blanking interrupts. |
| 450 | */ |
| 451 | spin_lock_irqsave(&dev->event_lock, flags); |
| 452 | event = scrtc->event; |
| 453 | if (event && event->base.file_priv == file) { |
| 454 | scrtc->event = NULL; |
| 455 | event->base.destroy(&event->base); |
| 456 | drm_vblank_put(dev, 0); |
| 457 | } |
| 458 | spin_unlock_irqrestore(&dev->event_lock, flags); |
| 459 | } |
| 460 | |
| 461 | void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc) |
| 462 | { |
| 463 | struct drm_pending_vblank_event *event; |
| 464 | struct drm_device *dev = scrtc->crtc.dev; |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 465 | unsigned long flags; |
| 466 | |
| 467 | spin_lock_irqsave(&dev->event_lock, flags); |
| 468 | event = scrtc->event; |
| 469 | scrtc->event = NULL; |
Rob Clark | f7e96d7 | 2012-10-08 19:50:45 +0000 | [diff] [blame] | 470 | if (event) { |
| 471 | drm_send_vblank_event(dev, 0, event); |
| 472 | drm_vblank_put(dev, 0); |
| 473 | } |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 474 | spin_unlock_irqrestore(&dev->event_lock, flags); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc, |
| 478 | struct drm_framebuffer *fb, |
Keith Packard | ed8d197 | 2013-07-22 18:49:58 -0700 | [diff] [blame] | 479 | struct drm_pending_vblank_event *event, |
| 480 | uint32_t page_flip_flags) |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 481 | { |
| 482 | struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc); |
| 483 | struct drm_device *dev = scrtc->crtc.dev; |
| 484 | unsigned long flags; |
| 485 | |
| 486 | spin_lock_irqsave(&dev->event_lock, flags); |
| 487 | if (scrtc->event != NULL) { |
| 488 | spin_unlock_irqrestore(&dev->event_lock, flags); |
| 489 | return -EBUSY; |
| 490 | } |
| 491 | spin_unlock_irqrestore(&dev->event_lock, flags); |
| 492 | |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 493 | crtc->primary->fb = fb; |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 494 | shmob_drm_crtc_update_base(scrtc); |
| 495 | |
| 496 | if (event) { |
| 497 | event->pipe = 0; |
Laurent Pinchart | 17f0efc | 2013-03-12 15:38:43 +0100 | [diff] [blame] | 498 | drm_vblank_get(dev, 0); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 499 | spin_lock_irqsave(&dev->event_lock, flags); |
| 500 | scrtc->event = event; |
| 501 | spin_unlock_irqrestore(&dev->event_lock, flags); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static const struct drm_crtc_funcs crtc_funcs = { |
| 508 | .destroy = drm_crtc_cleanup, |
| 509 | .set_config = drm_crtc_helper_set_config, |
| 510 | .page_flip = shmob_drm_crtc_page_flip, |
| 511 | }; |
| 512 | |
| 513 | int shmob_drm_crtc_create(struct shmob_drm_device *sdev) |
| 514 | { |
| 515 | struct drm_crtc *crtc = &sdev->crtc.crtc; |
| 516 | int ret; |
| 517 | |
| 518 | sdev->crtc.dpms = DRM_MODE_DPMS_OFF; |
| 519 | |
| 520 | ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs); |
| 521 | if (ret < 0) |
| 522 | return ret; |
| 523 | |
| 524 | drm_crtc_helper_add(crtc, &crtc_helper_funcs); |
| 525 | |
| 526 | return 0; |
| 527 | } |
| 528 | |
| 529 | /* ----------------------------------------------------------------------------- |
| 530 | * Encoder |
| 531 | */ |
| 532 | |
| 533 | #define to_shmob_encoder(e) \ |
| 534 | container_of(e, struct shmob_drm_encoder, encoder) |
| 535 | |
| 536 | static void shmob_drm_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 537 | { |
| 538 | struct shmob_drm_encoder *senc = to_shmob_encoder(encoder); |
| 539 | struct shmob_drm_device *sdev = encoder->dev->dev_private; |
| 540 | struct shmob_drm_connector *scon = &sdev->connector; |
| 541 | |
| 542 | if (senc->dpms == mode) |
| 543 | return; |
| 544 | |
| 545 | shmob_drm_backlight_dpms(scon, mode); |
| 546 | |
| 547 | senc->dpms = mode; |
| 548 | } |
| 549 | |
| 550 | static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder, |
| 551 | const struct drm_display_mode *mode, |
| 552 | struct drm_display_mode *adjusted_mode) |
| 553 | { |
| 554 | struct drm_device *dev = encoder->dev; |
| 555 | struct shmob_drm_device *sdev = dev->dev_private; |
| 556 | struct drm_connector *connector = &sdev->connector.connector; |
| 557 | const struct drm_display_mode *panel_mode; |
| 558 | |
| 559 | if (list_empty(&connector->modes)) { |
| 560 | dev_dbg(dev->dev, "mode_fixup: empty modes list\n"); |
| 561 | return false; |
| 562 | } |
| 563 | |
| 564 | /* The flat panel mode is fixed, just copy it to the adjusted mode. */ |
| 565 | panel_mode = list_first_entry(&connector->modes, |
| 566 | struct drm_display_mode, head); |
| 567 | drm_mode_copy(adjusted_mode, panel_mode); |
| 568 | |
| 569 | return true; |
| 570 | } |
| 571 | |
| 572 | static void shmob_drm_encoder_mode_prepare(struct drm_encoder *encoder) |
| 573 | { |
| 574 | /* No-op, everything is handled in the CRTC code. */ |
| 575 | } |
| 576 | |
| 577 | static void shmob_drm_encoder_mode_set(struct drm_encoder *encoder, |
| 578 | struct drm_display_mode *mode, |
| 579 | struct drm_display_mode *adjusted_mode) |
| 580 | { |
| 581 | /* No-op, everything is handled in the CRTC code. */ |
| 582 | } |
| 583 | |
| 584 | static void shmob_drm_encoder_mode_commit(struct drm_encoder *encoder) |
| 585 | { |
| 586 | /* No-op, everything is handled in the CRTC code. */ |
| 587 | } |
| 588 | |
| 589 | static const struct drm_encoder_helper_funcs encoder_helper_funcs = { |
| 590 | .dpms = shmob_drm_encoder_dpms, |
| 591 | .mode_fixup = shmob_drm_encoder_mode_fixup, |
| 592 | .prepare = shmob_drm_encoder_mode_prepare, |
| 593 | .commit = shmob_drm_encoder_mode_commit, |
| 594 | .mode_set = shmob_drm_encoder_mode_set, |
| 595 | }; |
| 596 | |
| 597 | static void shmob_drm_encoder_destroy(struct drm_encoder *encoder) |
| 598 | { |
| 599 | drm_encoder_cleanup(encoder); |
| 600 | } |
| 601 | |
| 602 | static const struct drm_encoder_funcs encoder_funcs = { |
| 603 | .destroy = shmob_drm_encoder_destroy, |
| 604 | }; |
| 605 | |
| 606 | int shmob_drm_encoder_create(struct shmob_drm_device *sdev) |
| 607 | { |
| 608 | struct drm_encoder *encoder = &sdev->encoder.encoder; |
| 609 | int ret; |
| 610 | |
| 611 | sdev->encoder.dpms = DRM_MODE_DPMS_OFF; |
| 612 | |
| 613 | encoder->possible_crtcs = 1; |
| 614 | |
| 615 | ret = drm_encoder_init(sdev->ddev, encoder, &encoder_funcs, |
| 616 | DRM_MODE_ENCODER_LVDS); |
| 617 | if (ret < 0) |
| 618 | return ret; |
| 619 | |
| 620 | drm_encoder_helper_add(encoder, &encoder_helper_funcs); |
| 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev, bool enable) |
| 626 | { |
| 627 | unsigned long flags; |
| 628 | u32 ldintr; |
| 629 | |
| 630 | /* Be careful not to acknowledge any pending interrupt. */ |
| 631 | spin_lock_irqsave(&sdev->irq_lock, flags); |
| 632 | ldintr = lcdc_read(sdev, LDINTR) | LDINTR_STATUS_MASK; |
| 633 | if (enable) |
| 634 | ldintr |= LDINTR_VEE; |
| 635 | else |
| 636 | ldintr &= ~LDINTR_VEE; |
| 637 | lcdc_write(sdev, LDINTR, ldintr); |
| 638 | spin_unlock_irqrestore(&sdev->irq_lock, flags); |
| 639 | } |
| 640 | |
| 641 | /* ----------------------------------------------------------------------------- |
| 642 | * Connector |
| 643 | */ |
| 644 | |
| 645 | #define to_shmob_connector(c) \ |
| 646 | container_of(c, struct shmob_drm_connector, connector) |
| 647 | |
| 648 | static int shmob_drm_connector_get_modes(struct drm_connector *connector) |
| 649 | { |
| 650 | struct shmob_drm_device *sdev = connector->dev->dev_private; |
| 651 | struct drm_display_mode *mode; |
| 652 | |
| 653 | mode = drm_mode_create(connector->dev); |
| 654 | if (mode == NULL) |
| 655 | return 0; |
| 656 | |
| 657 | mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER; |
| 658 | mode->clock = sdev->pdata->panel.mode.clock; |
| 659 | mode->hdisplay = sdev->pdata->panel.mode.hdisplay; |
| 660 | mode->hsync_start = sdev->pdata->panel.mode.hsync_start; |
| 661 | mode->hsync_end = sdev->pdata->panel.mode.hsync_end; |
| 662 | mode->htotal = sdev->pdata->panel.mode.htotal; |
| 663 | mode->vdisplay = sdev->pdata->panel.mode.vdisplay; |
| 664 | mode->vsync_start = sdev->pdata->panel.mode.vsync_start; |
| 665 | mode->vsync_end = sdev->pdata->panel.mode.vsync_end; |
| 666 | mode->vtotal = sdev->pdata->panel.mode.vtotal; |
| 667 | mode->flags = sdev->pdata->panel.mode.flags; |
| 668 | |
| 669 | drm_mode_set_name(mode); |
| 670 | drm_mode_probed_add(connector, mode); |
| 671 | |
| 672 | connector->display_info.width_mm = sdev->pdata->panel.width_mm; |
| 673 | connector->display_info.height_mm = sdev->pdata->panel.height_mm; |
| 674 | |
| 675 | return 1; |
| 676 | } |
| 677 | |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 678 | static struct drm_encoder * |
| 679 | shmob_drm_connector_best_encoder(struct drm_connector *connector) |
| 680 | { |
| 681 | struct shmob_drm_connector *scon = to_shmob_connector(connector); |
| 682 | |
| 683 | return scon->encoder; |
| 684 | } |
| 685 | |
| 686 | static const struct drm_connector_helper_funcs connector_helper_funcs = { |
| 687 | .get_modes = shmob_drm_connector_get_modes, |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 688 | .best_encoder = shmob_drm_connector_best_encoder, |
| 689 | }; |
| 690 | |
| 691 | static void shmob_drm_connector_destroy(struct drm_connector *connector) |
| 692 | { |
| 693 | struct shmob_drm_connector *scon = to_shmob_connector(connector); |
| 694 | |
| 695 | shmob_drm_backlight_exit(scon); |
Thomas Wood | 34ea3d3 | 2014-05-29 16:57:41 +0100 | [diff] [blame] | 696 | drm_connector_unregister(connector); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 697 | drm_connector_cleanup(connector); |
| 698 | } |
| 699 | |
| 700 | static enum drm_connector_status |
| 701 | shmob_drm_connector_detect(struct drm_connector *connector, bool force) |
| 702 | { |
| 703 | return connector_status_connected; |
| 704 | } |
| 705 | |
| 706 | static const struct drm_connector_funcs connector_funcs = { |
| 707 | .dpms = drm_helper_connector_dpms, |
| 708 | .detect = shmob_drm_connector_detect, |
| 709 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 710 | .destroy = shmob_drm_connector_destroy, |
| 711 | }; |
| 712 | |
| 713 | int shmob_drm_connector_create(struct shmob_drm_device *sdev, |
| 714 | struct drm_encoder *encoder) |
| 715 | { |
| 716 | struct drm_connector *connector = &sdev->connector.connector; |
| 717 | int ret; |
| 718 | |
| 719 | sdev->connector.encoder = encoder; |
| 720 | |
| 721 | connector->display_info.width_mm = sdev->pdata->panel.width_mm; |
| 722 | connector->display_info.height_mm = sdev->pdata->panel.height_mm; |
| 723 | |
| 724 | ret = drm_connector_init(sdev->ddev, connector, &connector_funcs, |
| 725 | DRM_MODE_CONNECTOR_LVDS); |
| 726 | if (ret < 0) |
| 727 | return ret; |
| 728 | |
| 729 | drm_connector_helper_add(connector, &connector_helper_funcs); |
Thomas Wood | 34ea3d3 | 2014-05-29 16:57:41 +0100 | [diff] [blame] | 730 | ret = drm_connector_register(connector); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 731 | if (ret < 0) |
| 732 | goto err_cleanup; |
| 733 | |
| 734 | ret = shmob_drm_backlight_init(&sdev->connector); |
| 735 | if (ret < 0) |
| 736 | goto err_sysfs; |
| 737 | |
| 738 | ret = drm_mode_connector_attach_encoder(connector, encoder); |
| 739 | if (ret < 0) |
| 740 | goto err_backlight; |
| 741 | |
| 742 | connector->encoder = encoder; |
| 743 | |
| 744 | drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); |
Rob Clark | c708a56 | 2012-10-11 20:45:53 -0500 | [diff] [blame] | 745 | drm_object_property_set_value(&connector->base, |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 746 | sdev->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF); |
| 747 | |
| 748 | return 0; |
| 749 | |
| 750 | err_backlight: |
| 751 | shmob_drm_backlight_exit(&sdev->connector); |
| 752 | err_sysfs: |
Thomas Wood | 34ea3d3 | 2014-05-29 16:57:41 +0100 | [diff] [blame] | 753 | drm_connector_unregister(connector); |
Laurent Pinchart | 51c1327 | 2012-04-26 13:53:59 +0200 | [diff] [blame] | 754 | err_cleanup: |
| 755 | drm_connector_cleanup(connector); |
| 756 | return ret; |
| 757 | } |