[PATCH 0/2] drm/msm: HDMI PHY rework for MSM8x94 support

[PATCH 0/2] drm/msm: HDMI PHY rework for MSM8x94 support

[Stephane Viau]

This it to follow up with my RFC sent a few days ago[1].

Since the RFC got discussed and approved through IRC, here are the actual
patches.

Rgds,
Stephane.

[1] http://lists.freedesktop.org/archives/dri-devel/2015-June/084788.html

Stephane Viau (2):
  drm/msm/hdmi: remove ->reset() from HDMI PHY
  drm/msm: Add support for msm8x94

 drivers/gpu/drm/msm/hdmi/hdmi.c           | 30 ++++++----
 drivers/gpu/drm/msm/hdmi/hdmi.h           |  1 -
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c    |  8 ++-
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 94 +++++++++++++++++++++++++------
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c  | 52 -----------------
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8x60.c  | 32 -----------
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c  | 57 -------------------
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c   | 73 +++++++++++++++++++++++-
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c   |  8 ++-
 9 files changed, 179 insertions(+), 176 deletions(-)

-- 
Qualcomm Innovation Center, Inc.

The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

[PATCH 1/2] drm/msm/hdmi: remove ->reset() from HDMI PHY

[Stephane Viau]

->reset() currently only accesses HDMI core registers, and yet it
is located in hdmi_phy*. Since no PHY registers are being
accessed during ->reset(), it would be better to bring that
function in hdmi core module where HDMI core registers are
usually being accessed.

This will also help for msm8x94 for which no PHY registers
accesses are done (->phy_init == NULL) but the HDMI PHY reset
from HDMI core still needs to be done.

Note:
SW_RESET_PLL bit is not written in hdmi_phy_8x60_reset(); this
write should not affect anything if the corresponding field is
not writable.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi.h           |  1 -
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 51 ++++++++++++++++++++++++++-
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c  | 52 ----------------------------
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8x60.c  | 32 -----------------
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c  | 57 -------------------------------
 5 files changed, 50 insertions(+), 143 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index 68fdfb3..a155c4a 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -117,7 +117,6 @@ static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg)
 
 struct hdmi_phy_funcs {
 	void (*destroy)(struct hdmi_phy *phy);
-	void (*reset)(struct hdmi_phy *phy);
 	void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock);
 	void (*powerdown)(struct hdmi_phy *phy);
 };
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index a1650f4..ece572d 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -28,6 +28,55 @@ struct hdmi_connector {
 };
 #define to_hdmi_connector(x) container_of(x, struct hdmi_connector, base)
 
+static void hdmi_phy_reset(struct hdmi *hdmi)
+{
+	unsigned int val;
+
+	val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL);
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET);
+	} else {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET);
+	}
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
+	} else {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET_PLL);
+	}
+
+	msleep(100);
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET);
+	} else {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET);
+	}
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET_PLL);
+	} else {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
+	}
+}
+
 static int gpio_config(struct hdmi *hdmi, bool on)
 {
 	struct device *dev = &hdmi->pdev->dev;
@@ -181,7 +230,7 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 	}
 
 	hdmi_set_mode(hdmi, false);
-	phy->funcs->reset(phy);
+	hdmi_phy_reset(hdmi);
 	hdmi_set_mode(hdmi, true);
 
 	hdmi_write(hdmi, REG_HDMI_USEC_REFTIMER, 0x0001001b);
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c
index 6997ec6..3a01cb5 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c
@@ -426,57 +426,6 @@ static void hdmi_phy_8960_destroy(struct hdmi_phy *phy)
 	kfree(phy_8960);
 }
 
-static void hdmi_phy_8960_reset(struct hdmi_phy *phy)
-{
-	struct hdmi_phy_8960 *phy_8960 = to_hdmi_phy_8960(phy);
-	struct hdmi *hdmi = phy_8960->hdmi;
-	unsigned int val;
-
-	val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL);
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET);
-	} else {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET);
-	}
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
-	} else {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET_PLL);
-	}
-
-	msleep(100);
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET);
-	} else {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET);
-	}
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET_PLL);
-	} else {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
-	}
-}
-
 static void hdmi_phy_8960_powerup(struct hdmi_phy *phy,
 		unsigned long int pixclock)
 {
@@ -511,7 +460,6 @@ static void hdmi_phy_8960_powerdown(struct hdmi_phy *phy)
 
 static const struct hdmi_phy_funcs hdmi_phy_8960_funcs = {
 		.destroy = hdmi_phy_8960_destroy,
-		.reset = hdmi_phy_8960_reset,
 		.powerup = hdmi_phy_8960_powerup,
 		.powerdown = hdmi_phy_8960_powerdown,
 };
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x60.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x60.c
index 391433c..cb01421 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x60.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x60.c
@@ -29,37 +29,6 @@ static void hdmi_phy_8x60_destroy(struct hdmi_phy *phy)
 	kfree(phy_8x60);
 }
 
-static void hdmi_phy_8x60_reset(struct hdmi_phy *phy)
-{
-	struct hdmi_phy_8x60 *phy_8x60 = to_hdmi_phy_8x60(phy);
-	struct hdmi *hdmi = phy_8x60->hdmi;
-	unsigned int val;
-
-	val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL);
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET);
-	} else {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET);
-	}
-
-	msleep(100);
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET);
-	} else {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET);
-	}
-}
-
 static void hdmi_phy_8x60_powerup(struct hdmi_phy *phy,
 		unsigned long int pixclock)
 {
@@ -182,7 +151,6 @@ static void hdmi_phy_8x60_powerdown(struct hdmi_phy *phy)
 
 static const struct hdmi_phy_funcs hdmi_phy_8x60_funcs = {
 		.destroy = hdmi_phy_8x60_destroy,
-		.reset = hdmi_phy_8x60_reset,
 		.powerup = hdmi_phy_8x60_powerup,
 		.powerdown = hdmi_phy_8x60_powerdown,
 };
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c
index 59fa6cd..56ab891 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c
@@ -19,7 +19,6 @@
 
 struct hdmi_phy_8x74 {
 	struct hdmi_phy base;
-	struct hdmi *hdmi;
 	void __iomem *mmio;
 };
 #define to_hdmi_phy_8x74(x) container_of(x, struct hdmi_phy_8x74, base)
@@ -41,59 +40,6 @@ static void hdmi_phy_8x74_destroy(struct hdmi_phy *phy)
 	kfree(phy_8x74);
 }
 
-static void hdmi_phy_8x74_reset(struct hdmi_phy *phy)
-{
-	struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
-	struct hdmi *hdmi = phy_8x74->hdmi;
-	unsigned int val;
-
-	/* NOTE that HDMI_PHY_CTL is in core mmio, not phy mmio: */
-
-	val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL);
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET);
-	} else {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET);
-	}
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
-	} else {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET_PLL);
-	}
-
-	msleep(100);
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET);
-	} else {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET);
-	}
-
-	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
-		/* pull high */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val | HDMI_PHY_CTRL_SW_RESET_PLL);
-	} else {
-		/* pull low */
-		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
-				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
-	}
-}
-
 static void hdmi_phy_8x74_powerup(struct hdmi_phy *phy,
 		unsigned long int pixclock)
 {
@@ -117,7 +63,6 @@ static void hdmi_phy_8x74_powerdown(struct hdmi_phy *phy)
 
 static const struct hdmi_phy_funcs hdmi_phy_8x74_funcs = {
 		.destroy = hdmi_phy_8x74_destroy,
-		.reset = hdmi_phy_8x74_reset,
 		.powerup = hdmi_phy_8x74_powerup,
 		.powerdown = hdmi_phy_8x74_powerdown,
 };
@@ -138,8 +83,6 @@ struct hdmi_phy *hdmi_phy_8x74_init(struct hdmi *hdmi)
 
 	phy->funcs = &hdmi_phy_8x74_funcs;
 
-	phy_8x74->hdmi = hdmi;
-
 	/* for 8x74, the phy mmio is mapped separately: */
 	phy_8x74->mmio = msm_ioremap(hdmi->pdev,
 			"phy_physical", "HDMI_8x74");
-- 
Qualcomm Innovation Center, Inc.

The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

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[PATCH 2/2] drm/msm: Add support for msm8x94

[Stephane Viau]

This change adds the MDP and HDMI support for msm8x94.
Note that HDMI PHY registers are not being accessed anymore from
the driver.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c           | 30 ++++++++-----
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c    |  8 +++-
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 43 +++++++++++-------
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c   | 73 ++++++++++++++++++++++++++++++-
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c   |  8 ++--
 5 files changed, 129 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 8145362..4d73a69 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -89,16 +89,15 @@ static struct hdmi *hdmi_init(struct platform_device *pdev)
 	hdmi->config = config;
 
 	/* not sure about which phy maps to which msm.. probably I miss some */
-	if (config->phy_init)
+	if (config->phy_init) {
 		hdmi->phy = config->phy_init(hdmi);
-	else
-		hdmi->phy = ERR_PTR(-ENXIO);
 
-	if (IS_ERR(hdmi->phy)) {
-		ret = PTR_ERR(hdmi->phy);
-		dev_err(&pdev->dev, "failed to load phy: %d\n", ret);
-		hdmi->phy = NULL;
-		goto fail;
+		if (IS_ERR(hdmi->phy)) {
+			ret = PTR_ERR(hdmi->phy);
+			dev_err(&pdev->dev, "failed to load phy: %d\n", ret);
+			hdmi->phy = NULL;
+			goto fail;
+		}
 	}
 
 	hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
@@ -330,7 +329,19 @@ static struct hdmi_platform_config hdmi_tx_8084_config = {
 		.hpd_freq      = hpd_clk_freq_8x74,
 };
 
+static const char *hpd_reg_names_8x94[] = {};
+
+static struct hdmi_platform_config hdmi_tx_8x94_config = {
+		.phy_init = NULL, /* nothing to do for this HDMI PHY 20nm */
+		HDMI_CFG(pwr_reg, 8x74),
+		HDMI_CFG(hpd_reg, 8x94),
+		HDMI_CFG(pwr_clk, 8x74),
+		HDMI_CFG(hpd_clk, 8x74),
+		.hpd_freq      = hpd_clk_freq_8x74,
+};
+
 static const struct of_device_id dt_match[] = {
+	{ .compatible = "qcom,hdmi-tx-8x94", .data = &hdmi_tx_8x94_config },
 	{ .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
 	{ .compatible = "qcom,hdmi-tx-8074", .data = &hdmi_tx_8074_config },
 	{ .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
@@ -347,8 +358,7 @@ static int get_gpio(struct device *dev, struct device_node *of_node, const char
 		snprintf(name2, sizeof(name2), "%s-gpio", name);
 		gpio = of_get_named_gpio(of_node, name2, 0);
 		if (gpio < 0) {
-			dev_err(dev, "failed to get gpio: %s (%d)\n",
-					name, gpio);
+			DBG("failed to get gpio: %s (%d)", name, gpio);
 			gpio = -1;
 		}
 	}
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index a7a1d82..00cec41 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -100,7 +100,9 @@ static void hdmi_bridge_pre_enable(struct drm_bridge *bridge)
 		hdmi_audio_update(hdmi);
 	}
 
-	phy->funcs->powerup(phy, hdmi->pixclock);
+	if (phy)
+		phy->funcs->powerup(phy, hdmi->pixclock);
+
 	hdmi_set_mode(hdmi, true);
 }
 
@@ -120,7 +122,9 @@ static void hdmi_bridge_post_disable(struct drm_bridge *bridge)
 
 	DBG("power down");
 	hdmi_set_mode(hdmi, false);
-	phy->funcs->powerdown(phy);
+
+	if (phy)
+		phy->funcs->powerdown(phy);
 
 	if (hdmi->power_on) {
 		power_off(bridge);
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index ece572d..cdc818c 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -84,21 +84,25 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 	int ret;
 
 	if (on) {
-		ret = gpio_request(config->ddc_clk_gpio, "HDMI_DDC_CLK");
-		if (ret) {
-			dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
-				"HDMI_DDC_CLK", config->ddc_clk_gpio, ret);
-			goto error1;
+		if (config->ddc_clk_gpio != -1) {
+			ret = gpio_request(config->ddc_clk_gpio, "HDMI_DDC_CLK");
+			if (ret) {
+				dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
+					"HDMI_DDC_CLK", config->ddc_clk_gpio, ret);
+				goto error1;
+			}
+			gpio_set_value_cansleep(config->ddc_clk_gpio, 1);
 		}
-		gpio_set_value_cansleep(config->ddc_clk_gpio, 1);
 
-		ret = gpio_request(config->ddc_data_gpio, "HDMI_DDC_DATA");
-		if (ret) {
-			dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
-				"HDMI_DDC_DATA", config->ddc_data_gpio, ret);
-			goto error2;
+		if (config->ddc_data_gpio != -1) {
+			ret = gpio_request(config->ddc_data_gpio, "HDMI_DDC_DATA");
+			if (ret) {
+				dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
+					"HDMI_DDC_DATA", config->ddc_data_gpio, ret);
+				goto error2;
+			}
+			gpio_set_value_cansleep(config->ddc_data_gpio, 1);
 		}
-		gpio_set_value_cansleep(config->ddc_data_gpio, 1);
 
 		ret = gpio_request(config->hpd_gpio, "HDMI_HPD");
 		if (ret) {
@@ -143,8 +147,12 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 		}
 		DBG("gpio on");
 	} else {
-		gpio_free(config->ddc_clk_gpio);
-		gpio_free(config->ddc_data_gpio);
+		if (config->ddc_clk_gpio != -1)
+			gpio_free(config->ddc_clk_gpio);
+
+		if (config->ddc_data_gpio != -1)
+			gpio_free(config->ddc_data_gpio);
+
 		gpio_free(config->hpd_gpio);
 
 		if (config->mux_en_gpio != -1) {
@@ -175,9 +183,11 @@ error5:
 error4:
 	gpio_free(config->hpd_gpio);
 error3:
-	gpio_free(config->ddc_data_gpio);
+	if (config->ddc_data_gpio != -1)
+		gpio_free(config->ddc_data_gpio);
 error2:
-	gpio_free(config->ddc_clk_gpio);
+	if (config->ddc_clk_gpio != -1)
+		gpio_free(config->ddc_clk_gpio);
 error1:
 	return ret;
 }
@@ -187,7 +197,6 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 	struct hdmi *hdmi = hdmi_connector->hdmi;
 	const struct hdmi_platform_config *config = hdmi->config;
 	struct device *dev = &hdmi->pdev->dev;
-	struct hdmi_phy *phy = hdmi->phy;
 	uint32_t hpd_ctrl;
 	int i, ret;
 
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
index 9ff25a3..8d4757c 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
@@ -203,14 +203,85 @@ const struct mdp5_cfg_hw msm8x16_config = {
 	.max_clk = 320000000,
 };
 
+const struct mdp5_cfg_hw msm8x94_config = {
+	.name = "msm8x94",
+	.mdp = {
+		.count = 1,
+		.base = { 0x01000 },
+	},
+	.smp = {
+		.mmb_count = 44,
+		.mmb_size = 8192,
+		.clients = {
+			[SSPP_VIG0] =  1, [SSPP_VIG1] =  4,
+			[SSPP_VIG2] =  7, [SSPP_VIG3] = 19,
+			[SSPP_DMA0] = 10, [SSPP_DMA1] = 13,
+			[SSPP_RGB0] = 16, [SSPP_RGB1] = 17,
+			[SSPP_RGB2] = 18, [SSPP_RGB3] = 22,
+		},
+		.reserved_state[0] = GENMASK(23, 0),	/* first 24 MMBs */
+		.reserved = {
+			 [1] = 1,  [4] = 1,  [7] = 1, [19] = 1,
+			[16] = 5, [17] = 5, [18] = 5, [22] = 5,
+		},
+	},
+	.ctl = {
+		.count = 5,
+		.base = { 0x02000, 0x02200, 0x02400, 0x02600, 0x02800 },
+		.flush_hw_mask = 0xf0ffffff,
+	},
+	.pipe_vig = {
+		.count = 4,
+		.base = { 0x05000, 0x07000, 0x09000, 0x0b000 },
+		/* TODO: add decimation bit */
+	},
+	.pipe_rgb = {
+		.count = 4,
+		.base = { 0x15000, 0x17000, 0x19000, 0x1b000 },
+		/* TODO: add decimation bit */
+	},
+	.pipe_dma = {
+		.count = 2,
+		.base = { 0x25000, 0x27000 },
+	},
+	.lm = {
+		.count = 6,
+		.base = { 0x45000, 0x46000, 0x47000, 0x48000, 0x49000, 0x4a000 },
+		.nb_stages = 8,
+	},
+	.dspp = {
+		.count = 4,
+		.base = { 0x55000, 0x57000, 0x59000, 0x5b000 },
+
+	},
+	.ad = {
+		.count = 3,
+		.base = { 0x79000, 0x79800, 0x7a000 },
+	},
+	.pp = {
+		.count = 4,
+		.base = { 0x71000, 0x71800, 0x72000, 0x72800 },
+	},
+	.intf = {
+		.base = { 0x6b000, 0x6b800, 0x6c000, 0x6c800, 0x6d000 },
+		.connect = {
+			[0] = INTF_DISABLED,
+			[1] = INTF_DSI,
+			[2] = INTF_DSI,
+			[3] = INTF_HDMI,
+		},
+	},
+	.max_clk = 320000000,
+};
+
 static const struct mdp5_cfg_handler cfg_handlers[] = {
 	{ .revision = 0, .config = { .hw = &msm8x74_config } },
 	{ .revision = 2, .config = { .hw = &msm8x74_config } },
 	{ .revision = 3, .config = { .hw = &apq8084_config } },
 	{ .revision = 6, .config = { .hw = &msm8x16_config } },
+	{ .revision = 9, .config = { .hw = &msm8x94_config } },
 };
 
-
 static struct mdp5_cfg_platform *mdp5_get_config(struct platform_device *dev);
 
 const struct mdp5_cfg_hw *mdp5_cfg_get_hw_config(struct mdp5_cfg_handler *cfg_handler)
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index f6c5896..97226a1 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -159,7 +159,8 @@ int mdp5_disable(struct mdp5_kms *mdp5_kms)
 	clk_disable_unprepare(mdp5_kms->ahb_clk);
 	clk_disable_unprepare(mdp5_kms->axi_clk);
 	clk_disable_unprepare(mdp5_kms->core_clk);
-	clk_disable_unprepare(mdp5_kms->lut_clk);
+	if (mdp5_kms->lut_clk)
+		clk_disable_unprepare(mdp5_kms->lut_clk);
 
 	return 0;
 }
@@ -171,7 +172,8 @@ int mdp5_enable(struct mdp5_kms *mdp5_kms)
 	clk_prepare_enable(mdp5_kms->ahb_clk);
 	clk_prepare_enable(mdp5_kms->axi_clk);
 	clk_prepare_enable(mdp5_kms->core_clk);
-	clk_prepare_enable(mdp5_kms->lut_clk);
+	if (mdp5_kms->lut_clk)
+		clk_prepare_enable(mdp5_kms->lut_clk);
 
 	return 0;
 }
@@ -471,7 +473,7 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev)
 		goto fail;
 	ret = get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk");
 	if (ret)
-		goto fail;
+		DBG("failed to get (optional) lut_clk clock");
 	ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk");
 	if (ret)
 		goto fail;
-- 
Qualcomm Innovation Center, Inc.

The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

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