From 438c0f85cbbe6e7025e2375f97f5223b6eac5cd7 Mon Sep 17 00:00:00 2001 From: Rahul Sharma Date: Tue, 15 Jan 2013 08:11:05 -0500 Subject: [PATCH] drm/exynos: add display-mode-check operation to exynos_mixer_ops struct This patch adds the display mode check operation to exynos_mixer_ops in drm-common-hdmi. In Exynos SoCs, mixer IP can put certain restrictions on the proposed display modes. These restriction needs to be considered during mode negotiation, which happens immediately after edid parsing. Both, mixer check-mode and hdmi check-timing callbacks are called one after another and ANDed result is returned back. Signed-off-by: Rahul Sharma Reviewed-by: Sean Paul Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_hdmi.c | 12 ++++++++++++ drivers/gpu/drm/exynos/exynos_drm_hdmi.h | 5 ++++- drivers/gpu/drm/exynos/exynos_hdmi.c | 13 ++++++------- 3 files changed, 22 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c index 28644539b305..7c27df03c9ff 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c @@ -124,9 +124,21 @@ static struct edid *drm_hdmi_get_edid(struct device *dev, static int drm_hdmi_check_timing(struct device *dev, void *timing) { struct drm_hdmi_context *ctx = to_context(dev); + int ret = 0; DRM_DEBUG_KMS("%s\n", __FILE__); + /* + * Both, mixer and hdmi should be able to handle the requested mode. + * If any of the two fails, return mode as BAD. + */ + + if (mixer_ops && mixer_ops->check_timing) + ret = mixer_ops->check_timing(ctx->mixer_ctx->ctx, timing); + + if (ret) + return ret; + if (hdmi_ops && hdmi_ops->check_timing) return hdmi_ops->check_timing(ctx->hdmi_ctx->ctx, timing); diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h index d80516fc9ed7..b7faa3662307 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_hdmi.h +++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.h @@ -32,7 +32,7 @@ struct exynos_hdmi_ops { bool (*is_connected)(void *ctx); struct edid *(*get_edid)(void *ctx, struct drm_connector *connector); - int (*check_timing)(void *ctx, void *timing); + int (*check_timing)(void *ctx, struct fb_videomode *timing); int (*power_on)(void *ctx, int mode); /* manager */ @@ -58,6 +58,9 @@ struct exynos_mixer_ops { void (*win_mode_set)(void *ctx, struct exynos_drm_overlay *overlay); void (*win_commit)(void *ctx, int zpos); void (*win_disable)(void *ctx, int zpos); + + /* display */ + int (*check_timing)(void *ctx, struct fb_videomode *timing); }; void exynos_hdmi_drv_attach(struct exynos_drm_hdmi_context *ctx); diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index fbab3c468603..ba3301575525 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -1457,21 +1457,20 @@ static int hdmi_v14_check_timing(struct fb_videomode *check_timing) return -EINVAL; } -static int hdmi_check_timing(void *ctx, void *timing) +static int hdmi_check_timing(void *ctx, struct fb_videomode *timing) { struct hdmi_context *hdata = ctx; - struct fb_videomode *check_timing = timing; DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); - DRM_DEBUG_KMS("[%d]x[%d] [%d]Hz [%x]\n", check_timing->xres, - check_timing->yres, check_timing->refresh, - check_timing->vmode); + DRM_DEBUG_KMS("[%d]x[%d] [%d]Hz [%x]\n", timing->xres, + timing->yres, timing->refresh, + timing->vmode); if (hdata->type == HDMI_TYPE13) - return hdmi_v13_check_timing(check_timing); + return hdmi_v13_check_timing(timing); else - return hdmi_v14_check_timing(check_timing); + return hdmi_v14_check_timing(timing); } static void hdmi_set_acr(u32 freq, u8 *acr) -- 2.30.2