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Commit 74a74ff4 authored by Andrzej Hajda's avatar Andrzej Hajda Committed by Inki Dae
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drm/exynos/hdmi: simplify HDMI-PHY power sequence 

Currently driver tries to set specific HDMI-PHY registers in three situations:
- before reset,
- before power off,
- after applying HDMI-PHY configuration.

First two cases seems to be unnecessary - register contents will be lost
anyway. The third case can be merged with HDMI-PHY configuration by fixing
the last byte of configuration data.

The patch has been tested with following platforms:
- exynos4210-universal_c210,
- exynos4412-odroidu3,
- exynos5422-odroidxu3.
Signed-off-by: default avatarAndrzej Hajda <a.hajda@samsung.com>
Reviewed-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 8eb6d4ec
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Showing with 8 additions and 85 deletions
drivers/gpu/drm/exynos/exynos_hdmi.c
View file @ 74a74ff4
......@@ -148,7 +148,7 @@ static const struct hdmiphy_config hdmiphy_v13_configs[] = {
0x01, 0x05, 0x00, 0xD8, 0x10, 0x1C, 0x30, 0x40,
0x6B, 0x10, 0x02, 0x51, 0xDF, 0xF2, 0x54, 0x87,
0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
0x22, 0x40, 0xE3, 0x26, 0x00, 0x00, 0x00, 0x00,
0x22, 0x40, 0xE3, 0x26, 0x00, 0x00, 0x00, 0x80,
},
},
{
......@@ -157,7 +157,7 @@ static const struct hdmiphy_config hdmiphy_v13_configs[] = {
0x01, 0x05, 0x00, 0xD4, 0x10, 0x9C, 0x09, 0x64,
0x6B, 0x10, 0x02, 0x51, 0xDF, 0xF2, 0x54, 0x87,
0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
0x22, 0x40, 0xE3, 0x26, 0x00, 0x00, 0x00, 0x00,
0x22, 0x40, 0xE3, 0x26, 0x00, 0x00, 0x00, 0x80,
},
},
{
......@@ -166,7 +166,7 @@ static const struct hdmiphy_config hdmiphy_v13_configs[] = {
0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xef, 0x5B,
0x6D, 0x10, 0x01, 0x51, 0xef, 0xF3, 0x54, 0xb9,
0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
0x22, 0x40, 0xa5, 0x26, 0x01, 0x00, 0x00, 0x00,
0x22, 0x40, 0xa5, 0x26, 0x01, 0x00, 0x00, 0x80,
},
},
{
......@@ -175,7 +175,7 @@ static const struct hdmiphy_config hdmiphy_v13_configs[] = {
0x01, 0x05, 0x00, 0xd8, 0x10, 0x9c, 0xf8, 0x40,
0x6a, 0x10, 0x01, 0x51, 0xff, 0xf1, 0x54, 0xba,
0x84, 0x00, 0x10, 0x38, 0x00, 0x08, 0x10, 0xe0,
0x22, 0x40, 0xa4, 0x26, 0x01, 0x00, 0x00, 0x00,
0x22, 0x40, 0xa4, 0x26, 0x01, 0x00, 0x00, 0x80,
},
},
{
......@@ -184,7 +184,7 @@ static const struct hdmiphy_config hdmiphy_v13_configs[] = {
0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xf8, 0x40,
0x6A, 0x18, 0x00, 0x51, 0xff, 0xF1, 0x54, 0xba,
0x84, 0x00, 0x10, 0x38, 0x00, 0x08, 0x10, 0xE0,
0x22, 0x40, 0xa4, 0x26, 0x02, 0x00, 0x00, 0x00,
0x22, 0x40, 0xa4, 0x26, 0x02, 0x00, 0x00, 0x80,
},
},
};
......@@ -214,7 +214,7 @@ static const struct hdmiphy_config hdmiphy_v14_configs[] = {
0x01, 0xd1, 0x2d, 0x72, 0x40, 0x64, 0x12, 0x08,
0x43, 0xa0, 0x0e, 0xd9, 0x45, 0xa0, 0xac, 0x80,
0x08, 0x80, 0x11, 0x04, 0x02, 0x22, 0x44, 0x86,
0x54, 0xe3, 0x24, 0x00, 0x00, 0x00, 0x01, 0x00,
0x54, 0xe3, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
},
},
{
......@@ -277,7 +277,7 @@ static const struct hdmiphy_config hdmiphy_v14_configs[] = {
0x01, 0xd1, 0x1f, 0x10, 0x40, 0x40, 0xf8, 0x08,
0x81, 0xa0, 0xba, 0xd8, 0x45, 0xa0, 0xac, 0x80,
0x3c, 0x80, 0x11, 0x04, 0x02, 0x22, 0x44, 0x86,
0x54, 0xa5, 0x24, 0x01, 0x00, 0x00, 0x01, 0x00,
0x54, 0xa5, 0x24, 0x01, 0x00, 0x00, 0x01, 0x80,
},
},
{
......@@ -340,7 +340,7 @@ static const struct hdmiphy_config hdmiphy_v14_configs[] = {
0x01, 0xd1, 0x1f, 0x00, 0x40, 0x40, 0xf8, 0x08,
0x81, 0xa0, 0xba, 0xd8, 0x45, 0xa0, 0xac, 0x80,
0x3c, 0x80, 0x11, 0x04, 0x02, 0x22, 0x44, 0x86,
0x54, 0x4b, 0x25, 0x03, 0x00, 0x00, 0x01, 0x00,
0x54, 0x4b, 0x25, 0x03, 0x00, 0x00, 0x01, 0x80,
},
},
};
......@@ -563,26 +563,6 @@ static inline void hdmi_reg_writemask(struct hdmi_context *hdata,
writel(value, hdata->regs + reg_id);
}
static int hdmiphy_reg_writeb(struct hdmi_context *hdata,
u32 reg_offset, u8 value)
{
if (hdata->hdmiphy_port) {
u8 buffer[2];
int ret;
buffer[0] = reg_offset;
buffer[1] = value;
ret = i2c_master_send(hdata->hdmiphy_port, buffer, 2);
if (ret == 2)
return 0;
return ret;
} else {
writeb(value, hdata->regs_hdmiphy + (reg_offset<<2));
return 0;
}
}
static int hdmiphy_reg_write_buf(struct hdmi_context *hdata,
u32 reg_offset, const u8 *buf, u32 len)
{
......@@ -1598,10 +1578,6 @@ static void hdmiphy_conf_reset(struct hdmi_context *hdata)
clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_pixel);
clk_prepare_enable(hdata->res.sclk_hdmi);
/* operation mode */
hdmiphy_reg_writeb(hdata, HDMIPHY_MODE_SET_DONE,
HDMI_PHY_ENABLE_MODE_SET);
/* reset hdmiphy */
hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT);
usleep_range(10000, 12000);
......@@ -1609,48 +1585,6 @@ static void hdmiphy_conf_reset(struct hdmi_context *hdata)
usleep_range(10000, 12000);
}
static void hdmiphy_poweron(struct hdmi_context *hdata)
{
if (hdata->drv_data->type != HDMI_TYPE14)
return;
DRM_DEBUG_KMS("\n");
/* For PHY Mode Setting */
hdmiphy_reg_writeb(hdata, HDMIPHY_MODE_SET_DONE,
HDMI_PHY_ENABLE_MODE_SET);
/* Phy Power On */
hdmiphy_reg_writeb(hdata, HDMIPHY_POWER,
HDMI_PHY_POWER_ON);
/* For PHY Mode Setting */
hdmiphy_reg_writeb(hdata, HDMIPHY_MODE_SET_DONE,
HDMI_PHY_DISABLE_MODE_SET);
/* PHY SW Reset */
hdmiphy_conf_reset(hdata);
}
static void hdmiphy_poweroff(struct hdmi_context *hdata)
{
if (hdata->drv_data->type != HDMI_TYPE14)
return;
DRM_DEBUG_KMS("\n");
/* PHY SW Reset */
hdmiphy_conf_reset(hdata);
/* For PHY Mode Setting */
hdmiphy_reg_writeb(hdata, HDMIPHY_MODE_SET_DONE,
HDMI_PHY_ENABLE_MODE_SET);
/* PHY Power Off */
hdmiphy_reg_writeb(hdata, HDMIPHY_POWER,
HDMI_PHY_POWER_OFF);
/* For PHY Mode Setting */
hdmiphy_reg_writeb(hdata, HDMIPHY_MODE_SET_DONE,
HDMI_PHY_DISABLE_MODE_SET);
}
static void hdmiphy_conf_apply(struct hdmi_context *hdata)
{
int ret;
......@@ -1671,14 +1605,6 @@ static void hdmiphy_conf_apply(struct hdmi_context *hdata)
}
usleep_range(10000, 12000);
ret = hdmiphy_reg_writeb(hdata, HDMIPHY_MODE_SET_DONE,
HDMI_PHY_DISABLE_MODE_SET);
if (ret) {
DRM_ERROR("failed to enable hdmiphy\n");
return;
}
}
static void hdmi_conf_apply(struct hdmi_context *hdata)
......@@ -1736,7 +1662,6 @@ static void hdmi_enable(struct drm_encoder *encoder)
clk_prepare_enable(res->hdmi);
clk_prepare_enable(res->sclk_hdmi);
hdmiphy_poweron(hdata);
hdmi_conf_apply(hdata);
}
......@@ -1767,8 +1692,6 @@ static void hdmi_disable(struct drm_encoder *encoder)
/* HDMI System Disable */
hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_EN);
hdmiphy_poweroff(hdata);
cancel_delayed_work(&hdata->hotplug_work);
clk_disable_unprepare(res->sclk_hdmi);
......
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