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drm/exynos: add error messages if clks failed to get enabled

Browse source 
Check error and call DRM_ERROR if clk_prepare_enable() fails.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Gustavo Padovan 2015-06-03 17:17:16 -03:00 committed by Inki Dae
parent 1e5507cecb
commit 38000dbb71
3 changed files with 62 additions and 11 deletions
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28
drivers/gpu/drm/exynos/exynos7_drm_decon.c
View file

@ -606,6 +606,7 @@ static void decon_init(struct decon_context *ctx)
static void decon_enable(struct exynos_drm_crtc *crtc)
{
struct decon_context *ctx = crtc->ctx;
int ret;
if (!ctx->suspended)
return;
@ -614,10 +615,29 @@ static void decon_enable(struct exynos_drm_crtc *crtc)
pm_runtime_get_sync(ctx->dev);
clk_prepare_enable(ctx->pclk);
clk_prepare_enable(ctx->aclk);
clk_prepare_enable(ctx->eclk);
clk_prepare_enable(ctx->vclk);
ret = clk_prepare_enable(ctx->pclk);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the pclk [%d]\n", ret);
return;
}
ret = clk_prepare_enable(ctx->aclk);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the aclk [%d]\n", ret);
return;
}
ret = clk_prepare_enable(ctx->eclk);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the eclk [%d]\n", ret);
return;
}
ret = clk_prepare_enable(ctx->vclk);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the vclk [%d]\n", ret);
return;
}
decon_init(ctx);

14
drivers/gpu/drm/exynos/exynos_drm_fimd.c
View file

@ -808,6 +808,7 @@ static void fimd_apply(struct fimd_context *ctx)
static void fimd_enable(struct exynos_drm_crtc *crtc)
{
struct fimd_context *ctx = crtc->ctx;
int ret;
if (!ctx->suspended)
return;
@ -816,8 +817,17 @@ static void fimd_enable(struct exynos_drm_crtc *crtc)
pm_runtime_get_sync(ctx->dev);
clk_prepare_enable(ctx->bus_clk);
clk_prepare_enable(ctx->lcd_clk);
ret = clk_prepare_enable(ctx->bus_clk);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the bus clk [%d]\n", ret);
return;
}
ret = clk_prepare_enable(ctx->lcd_clk);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the lcd clk [%d]\n", ret);
return;
}
/* if vblank was enabled status, enable it again. */
if (test_and_clear_bit(0, &ctx->irq_flags))

31
drivers/gpu/drm/exynos/exynos_mixer.c
View file

@ -1031,6 +1031,7 @@ static void mixer_enable(struct exynos_drm_crtc *crtc)
{
struct mixer_context *ctx = crtc->ctx;
struct mixer_resources *res = &ctx->mixer_res;
int ret;
mutex_lock(&ctx->mixer_mutex);
if (ctx->powered) {
@ -1042,12 +1043,32 @@ static void mixer_enable(struct exynos_drm_crtc *crtc)
pm_runtime_get_sync(ctx->dev);
clk_prepare_enable(res->mixer);
clk_prepare_enable(res->hdmi);
ret = clk_prepare_enable(res->mixer);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret);
return;
}
ret = clk_prepare_enable(res->hdmi);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret);
return;
}
if (ctx->vp_enabled) {
clk_prepare_enable(res->vp);
if (ctx->has_sclk)
clk_prepare_enable(res->sclk_mixer);
ret = clk_prepare_enable(res->vp);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n",
ret);
return;
}
if (ctx->has_sclk) {
ret = clk_prepare_enable(res->sclk_mixer);
if (ret < 0) {
DRM_ERROR("Failed to prepare_enable the " \
"sclk_mixer clk [%d]\n",
ret);
return;
}
}
}
mutex_lock(&ctx->mixer_mutex);