On Wed, May 01, 2013 at 09:06:09PM +0200, 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@xxxxxxxxx>
Since the drm mode struct also contains flags for sync polarity ... why is
there no direct of -> drm_mode function? Going through an fb videomode in
a kms drm driver looks _really_ backwards to me.
Cc'in Dave for the fun of it ;-)
Cheers, Daniel
> ---
> 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;
> } else {
> pdata = pdev->dev.platform_data;
> if (!pdata) {
> --
> 1.8.2.1
>
> _______________________________________________
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> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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