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Subject[PATCHv2 2/3] drm: exynos: hdmi: use hdmiphy as PHY
Date
The HDMIPHY (physical interface) is controlled by a single
bit in a power controller's regiter. It was implemented
as clock. It was a simple but effective hack.

This patch makes HDMI driver to control HDMIPHY via PHY interface.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 9a6d652..ef1cdd0 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -36,6 +36,7 @@
#include <linux/i2c.h>
#include <linux/of_gpio.h>
#include <linux/hdmi.h>
+#include <linux/phy/phy.h>

#include <drm/exynos_drm.h>

@@ -74,8 +75,8 @@ struct hdmi_resources {
struct clk *sclk_hdmi;
struct clk *sclk_pixel;
struct clk *sclk_hdmiphy;
- struct clk *hdmiphy;
struct clk *mout_hdmi;
+ struct phy *hdmiphy;
struct regulator_bulk_data *regul_bulk;
int regul_count;
};
@@ -1854,7 +1855,7 @@ static void hdmi_poweron(struct exynos_drm_display *display)
if (regulator_bulk_enable(res->regul_count, res->regul_bulk))
DRM_DEBUG_KMS("failed to enable regulator bulk\n");

- clk_prepare_enable(res->hdmiphy);
+ phy_power_on(res->hdmiphy);
clk_prepare_enable(res->hdmi);
clk_prepare_enable(res->sclk_hdmi);

@@ -1881,7 +1882,7 @@ static void hdmi_poweroff(struct exynos_drm_display *display)

clk_disable_unprepare(res->sclk_hdmi);
clk_disable_unprepare(res->hdmi);
- clk_disable_unprepare(res->hdmiphy);
+ phy_power_off(res->hdmiphy);
regulator_bulk_disable(res->regul_count, res->regul_bulk);

pm_runtime_put_sync(hdata->dev);
@@ -1977,9 +1978,9 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
DRM_ERROR("failed to get clock 'sclk_hdmiphy'\n");
goto fail;
}
- res->hdmiphy = devm_clk_get(dev, "hdmiphy");
+ res->hdmiphy = devm_phy_get(dev, "hdmiphy");
if (IS_ERR(res->hdmiphy)) {
- DRM_ERROR("failed to get clock 'hdmiphy'\n");
+ DRM_ERROR("failed to get phy 'hdmiphy'\n");
goto fail;
}
res->mout_hdmi = devm_clk_get(dev, "mout_hdmi");
--
1.7.9.5


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