This patch adds the implementation of check_timing callback in the mixer
driver. Based on the mixer version, correct set of restrictions will be
exposed by the mixer driver. A resolution will be acceptable only if passes
the criteria set by mixer and hdmi IPs.
Signed-off-by: Rahul Sharma <rahul.sharma@xxxxxxxxxxx>
Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_mixer.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index c187ea3..e569395 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -811,6 +811,29 @@ static void mixer_win_disable(void *ctx, int win)
mixer_ctx->win_data[win].enabled = false;
}
+int mixer_check_timing(void *ctx, struct fb_videomode *timing)
+{
+ struct mixer_context *mixer_ctx = ctx;
+ u32 w, h;
+
+ w = timing->xres;
+ h = timing->yres;
+
+ DRM_DEBUG_KMS("%s : xres=%d, yres=%d, refresh=%d, intl=%d\n",
+ __func__, timing->xres, timing->yres,
+ timing->refresh, (timing->vmode &
+ FB_VMODE_INTERLACED) ? true : false);
+
+ if (mixer_ctx->mxr_ver == MXR_VER_0_0_0_16)
+ return 0;
+
+ if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
+ (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
+ (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
+ return 0;
+
+ return -EINVAL;
+}
static void mixer_wait_for_vblank(void *ctx)
{
struct mixer_context *mixer_ctx = ctx;
@@ -948,6 +971,9 @@ static struct exynos_mixer_ops mixer_ops = {
.win_mode_set = mixer_win_mode_set,
.win_commit = mixer_win_commit,
.win_disable = mixer_win_disable,
+
+ /* display */
+ .check_timing = mixer_check_timing,
};
static irqreturn_t mixer_irq_handler(int irq, void *arg)
--
1.8.0
--
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