2013/3/1 Vikas Sajjan <vikas.sajjan@xxxxxxxxxx>:
> Add support for parsing the display-timing node using video helper
> function.
>
> The DT node parsing is done only if 'dev.of_node'
> exists and the NON-DT logic is still maintained under the 'else' part.
>
> Signed-off-by: Leela Krishna Amudala <l.krishna@xxxxxxxxxxx>
> Signed-off-by: Vikas Sajjan <vikas.sajjan@xxxxxxxxxx>
> Acked-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/exynos/exynos_drm_fimd.c | 24 ++++++++++++++++++++----
> 1 file changed, 20 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index 9537761..e323cf9 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -20,6 +20,7 @@
> #include <linux/of_device.h>
> #include <linux/pm_runtime.h>
>
> +#include <video/of_display_timing.h>
> #include <video/samsung_fimd.h>
> #include <drm/exynos_drm.h>
>
> @@ -883,10 +884,25 @@ static int fimd_probe(struct platform_device *pdev)
>
> DRM_DEBUG_KMS("%s\n", __FILE__);
>
> - pdata = pdev->dev.platform_data;
> - if (!pdata) {
> - dev_err(dev, "no platform data specified\n");
> - return -EINVAL;
> + if (pdev->dev.of_node) {
> + 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);
Add "select OF_VIDEOMODE" and "select FB_MODE_HELPERS" to
drivers/gpu/drm/exynos/Kconfig. When EXYNOS_DRM_FIMD config is
selected, these two configs should also be selected.
Thanks,
Inki Dae
> + if (ret) {
> + DRM_ERROR("failed: of_get_fb_videomode() : %d\n", ret);
> + return ret;
> + }
> + } else {
> + pdata = pdev->dev.platform_data;
> + if (!pdata) {
> + DRM_ERROR("no platform data specified\n");
> + return -EINVAL;
> + }
> }
>
> panel = &pdata->panel;
> --
> 1.7.9.5
>
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