On Wednesday 01 of May 2013 21:06:09 Tomasz Figa wrote:
This patch modifies the driver to perform two stage parsing of video timings from device tree, to get timing information as struct videomode, which contains more data than struct fb_videomode.
Thanks to this change, information about polarity of control signals (VSYNC, HSYNC, VDEN, VCLK) can be retrieved, in addition to standard video timings.
Signed-off-by: Tomasz Figa tomasz.figa@gmail.com
drivers/gpu/drm/exynos/exynos_drm_fimd.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index a1669d4..9023efa 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -21,7 +21,9 @@ #include <linux/pm_runtime.h>
#include <video/of_display_timing.h> +#include <video/of_videomode.h> #include <video/samsung_fimd.h> +#include <video/videomode.h> #include <drm/exynos_drm.h>
#include "exynos_drm_drv.h" @@ -928,18 +930,30 @@ static int fimd_probe(struct platform_device *pdev) DRM_DEBUG_KMS("%s\n", __FILE__);
if (pdev->dev.of_node) {
struct videomode vm;- pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { DRM_ERROR("memory allocation for pdata failed\n"); return -ENOMEM; }
ret = of_get_fb_videomode(dev->of_node, &pdata-panel.timing,
OF_USE_NATIVE_MODE);
ret = of_get_videomode(dev->of_node, &vm,
OF_USE_NATIVE_MODE);
if (ret) { DRM_ERROR("failed: of_get_fb_videomode() : %d\n",
ret);
return ret; }
fb_videomode_from_videomode(&vm, &pdata->panel.timing);if (vm.flags & DISPLAY_FLAGS_VSYNC_LOW)pdata->vidcon1 |= VIDCON1_INV_VSYNC;if (vm.flags & DISPLAY_FLAGS_HSYNC_LOW)pdata->vidcon1 |= VIDCON1_INV_HSYNC;if (vm.flags & DISPLAY_FLAGS_DE_LOW)pdata->vidcon1 |= VIDCON1_INV_VDEN;if (vm.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)pdata->vidcon1 |= VIDCON1_INV_VCLK;
Ping.
Best regards, Tomasz