[PATCH v4 22/29] drm/rockchip: inno_hdmi: Split power mode setting

Alex Bee
2023-12-22T17:44:48Z

This splits setting the power mode of the controller / phy in two
functions. It's done in preparation of setting up the phy based on the
pixelclock.

No functional changes intended.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
---
changes in v3:
- new patch

changes in v4:
- none

drivers/gpu/drm/rockchip/inno_hdmi.c | 54 +++++++++++++---------------
drivers/gpu/drm/rockchip/inno_hdmi.h | 5 ---
2 files changed, 24 insertions(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index 52b49f44a4f4..44c311e7e2d3 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -154,38 +154,31 @@ static void inno_hdmi_sys_power(struct inno_hdmi *hdmi, bool enable)
hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF);
}

-static void inno_hdmi_set_pwr_mode(struct inno_hdmi *hdmi, int mode)
+static void inno_hdmi_standby(struct inno_hdmi *hdmi)
{
- switch (mode) {
- case NORMAL:
- inno_hdmi_sys_power(hdmi, false);
+ inno_hdmi_sys_power(hdmi, false);

- hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x6f);
- hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0xbb);
-
- hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
- hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x14);
- hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x10);
- hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f);
- hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00);
- hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01);
-
- inno_hdmi_sys_power(hdmi, true);
- break;
+ hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0x00);
+ hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x00);
+ hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x00);
+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
+};

- case LOWER_PWR:
- inno_hdmi_sys_power(hdmi, false);
- hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0x00);
- hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x00);
- hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x00);
- hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
+static void inno_hdmi_power_up(struct inno_hdmi *hdmi)
+{
+ inno_hdmi_sys_power(hdmi, false);

- break;
+ hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x6f);
+ hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0xbb);
+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x14);
+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x10);
+ hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f);
+ hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00);
+ hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01);

- default:
- DRM_DEV_ERROR(hdmi->dev, "Unknown power mode %d\n", mode);
- }
-}
+ inno_hdmi_sys_power(hdmi, true);
+};

static void inno_hdmi_reset(struct inno_hdmi *hdmi)
{
@@ -202,7 +195,7 @@ static void inno_hdmi_reset(struct inno_hdmi *hdmi)
val = v_REG_CLK_INV | v_REG_CLK_SOURCE_SYS | v_PWR_ON | v_INT_POL_HIGH;
hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val);

- inno_hdmi_set_pwr_mode(hdmi, LOWER_PWR);
+ inno_hdmi_standby(hdmi);
}

static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi,
@@ -441,6 +434,8 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
v_AUDIO_MUTE(0) | v_VIDEO_MUTE(0));

+ inno_hdmi_power_up(hdmi);
+
return 0;
}

@@ -460,7 +455,6 @@ static void inno_hdmi_encoder_enable(struct drm_encoder *encoder,
return;

inno_hdmi_setup(hdmi, &crtc_state->adjusted_mode);
- inno_hdmi_set_pwr_mode(hdmi, NORMAL);
}

static void inno_hdmi_encoder_disable(struct drm_encoder *encoder,
@@ -468,7 +462,7 @@ static void inno_hdmi_encoder_disable(struct drm_encoder *encoder,
{
struct inno_hdmi *hdmi = encoder_to_inno_hdmi(encoder);

- inno_hdmi_set_pwr_mode(hdmi, LOWER_PWR);
+ inno_hdmi_standby(hdmi);
}

static int
diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.h b/drivers/gpu/drm/rockchip/inno_hdmi.h
index 93245b55f967..a7edf3559e60 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.h
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.h
@@ -10,11 +10,6 @@

#define DDC_SEGMENT_ADDR 0x30

-enum PWR_MODE {
- NORMAL,
- LOWER_PWR,
-};
-
#define HDMI_SCL_RATE (100*1000)
#define DDC_BUS_FREQ_L 0x4b
#define DDC_BUS_FREQ_H 0x4c