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authorAndrzej Hajda <a.hajda@samsung.com>2016-05-10 13:56:32 +0900
committerInki Dae <daeinki@gmail.com>2016-05-10 23:11:38 +0900
commit59b62d3c8bb8a5da351c5690f83b25c7e7252d94 (patch)
treee56149d63852ebf1e8391c2e2ec03e8bba41408b /drivers
parent2e726dc4b4e2dd3ae3fe675f9d3af88a2d593ee1 (diff)
drm/exynos/hdmi: expose HDMI-PHY clock as pipeline clock
HDMI-PHY clock should be accessible from other components in the pipeline. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/exynos/exynos_hdmi.c67
1 files changed, 48 insertions, 19 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 0f87acb4cf21..7de4dd5ab6e5 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -146,6 +146,7 @@ struct hdmi_context {
struct clk **clk_muxes;
struct regulator_bulk_data regul_bulk[ARRAY_SIZE(supply)];
struct regulator *reg_hdmi_en;
+ struct exynos_drm_clk phy_clk;
};
static inline struct hdmi_context *encoder_to_hdmi(struct drm_encoder *e)
@@ -1445,7 +1446,6 @@ static void hdmiphy_conf_apply(struct hdmi_context *hdata)
static void hdmi_conf_apply(struct hdmi_context *hdata)
{
- hdmiphy_conf_apply(hdata);
hdmi_start(hdata, false);
hdmi_conf_init(hdata);
hdmi_audio_init(hdata);
@@ -1478,10 +1478,8 @@ static void hdmi_set_refclk(struct hdmi_context *hdata, bool on)
SYSREG_HDMI_REFCLK_INT_CLK, on ? ~0 : 0);
}
-static void hdmi_enable(struct drm_encoder *encoder)
+static void hdmiphy_enable(struct hdmi_context *hdata)
{
- struct hdmi_context *hdata = encoder_to_hdmi(encoder);
-
if (hdata->powered)
return;
@@ -1497,11 +1495,40 @@ static void hdmi_enable(struct drm_encoder *encoder)
hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, 0, HDMI_PHY_POWER_OFF_EN);
- hdmi_conf_apply(hdata);
+ hdmiphy_conf_apply(hdata);
hdata->powered = true;
}
+static void hdmiphy_disable(struct hdmi_context *hdata)
+{
+ if (!hdata->powered)
+ return;
+
+ hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_EN);
+
+ hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, ~0, HDMI_PHY_POWER_OFF_EN);
+
+ hdmi_set_refclk(hdata, false);
+
+ regmap_update_bits(hdata->pmureg, PMU_HDMI_PHY_CONTROL,
+ PMU_HDMI_PHY_ENABLE_BIT, 0);
+
+ regulator_bulk_disable(ARRAY_SIZE(supply), hdata->regul_bulk);
+
+ pm_runtime_put_sync(hdata->dev);
+
+ hdata->powered = false;
+}
+
+static void hdmi_enable(struct drm_encoder *encoder)
+{
+ struct hdmi_context *hdata = encoder_to_hdmi(encoder);
+
+ hdmiphy_enable(hdata);
+ hdmi_conf_apply(hdata);
+}
+
static void hdmi_disable(struct drm_encoder *encoder)
{
struct hdmi_context *hdata = encoder_to_hdmi(encoder);
@@ -1525,22 +1552,9 @@ static void hdmi_disable(struct drm_encoder *encoder)
if (funcs && funcs->disable)
(*funcs->disable)(crtc);
- hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_EN);
-
cancel_delayed_work(&hdata->hotplug_work);
- hdmi_reg_writemask(hdata, HDMI_PHY_CON_0, ~0, HDMI_PHY_POWER_OFF_EN);
-
- hdmi_set_refclk(hdata, false);
-
- regmap_update_bits(hdata->pmureg, PMU_HDMI_PHY_CONTROL,
- PMU_HDMI_PHY_ENABLE_BIT, 0);
-
- regulator_bulk_disable(ARRAY_SIZE(supply), hdata->regul_bulk);
-
- pm_runtime_put_sync(hdata->dev);
-
- hdata->powered = false;
+ hdmiphy_disable(hdata);
}
static const struct drm_encoder_helper_funcs exynos_hdmi_encoder_helper_funcs = {
@@ -1625,6 +1639,17 @@ static int hdmi_clk_init(struct hdmi_context *hdata)
}
+static void hdmiphy_clk_enable(struct exynos_drm_clk *clk, bool enable)
+{
+ struct hdmi_context *hdata = container_of(clk, struct hdmi_context,
+ phy_clk);
+
+ if (enable)
+ hdmiphy_enable(hdata);
+ else
+ hdmiphy_disable(hdata);
+}
+
static int hdmi_resources_init(struct hdmi_context *hdata)
{
struct device *dev = hdata->dev;
@@ -1710,6 +1735,10 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
if (pipe < 0)
return pipe;
+ hdata->phy_clk.enable = hdmiphy_clk_enable;
+
+ exynos_drm_crtc_from_pipe(drm_dev, pipe)->pipe_clk = &hdata->phy_clk;
+
encoder->possible_crtcs = 1 << pipe;
DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);