From 59b62d3c8bb8a5da351c5690f83b25c7e7252d94 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Tue, 10 May 2016 13:56:32 +0900 Subject: [PATCH] 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 Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_hdmi.c | 67 ++++++++++++++++++++++++++---------- 1 file changed, 48 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 0f87acb..7de4dd5 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); -- 2.7.4