diff options
| author | Darren Etheridge <detheridge@ti.com> | 2013-06-21 22:52:22 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2013-06-28 03:12:13 +0400 |
| commit | 6bf02c66b97379609a05bc715b96f874f2cefb33 (patch) | |
| tree | 9174541584ce379ce530c646546b57f4929cbc3a /drivers/gpu/drm/tilcdc | |
| parent | abbee6238775c6633a3779962e9e5b5cb9823749 (diff) | |
| download | linux-6bf02c66b97379609a05bc715b96f874f2cefb33.tar.xz | |
drm/tilcdc: support pixel widths greater than 1024
TI LCD controller version 2 has an extended eleventh
bit that enables horizontal resolutions greater than
1024 pixels to be specified (upto 2048). This patch
adds support for setting this bit on LCDC V2.
Signed-off-by: Darren Etheridge <detheridge@ti.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/tilcdc')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 15 | ||||
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_regs.h | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 4de3fb4246fc..5b68fe59e437 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -310,6 +310,21 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc, ((vsw & 0x3f) << 10); tilcdc_write(dev, LCDC_RASTER_TIMING_1_REG, reg); + /* + * be sure to set Bit 10 for the V2 LCDC controller, + * otherwise limited to 1024 pixels width, stopping + * 1920x1080 being suppoted. + */ + if (priv->rev == 2) { + if ((mode->vdisplay - 1) & 0x400) { + tilcdc_set(dev, LCDC_RASTER_TIMING_2_REG, + LCDC_LPP_B10); + } else { + tilcdc_clear(dev, LCDC_RASTER_TIMING_2_REG, + LCDC_LPP_B10); + } + } + /* Configure display type: */ reg = tilcdc_read(dev, LCDC_RASTER_CTRL_REG) & ~(LCDC_TFT_MODE | LCDC_MONO_8BIT_MODE | LCDC_MONOCHROME_MODE | diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h index 17fd1b45428a..1bf5e2553acc 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h @@ -80,6 +80,7 @@ #define LCDC_INVERT_PIXEL_CLOCK BIT(22) #define LCDC_INVERT_HSYNC BIT(21) #define LCDC_INVERT_VSYNC BIT(20) +#define LCDC_LPP_B10 BIT(26) /* LCDC Block */ #define LCDC_PID_REG 0x0 |