From: Darren Etheridge Date: Fri, 21 Jun 2013 18:52:22 +0000 (-0500) Subject: drm/tilcdc: support pixel widths greater than 1024 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6bf02c66b97379609a05bc715b96f874f2cefb33;p=linux-beck.git 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 Acked-by: Rob Clark Signed-off-by: Dave Airlie --- 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