[PATCH v2 00/11] Add PX30 LVDS support

[PATCH v2 00/11] Add PX30 LVDS support

[Miquel Raynal]

Hello,

This series aims at supporting LVDS on PX30.

A first couple of patches update the documentation with the new
compatible and the presence of a PHY. Then, the existing Rockchip
driver is cleaned and extended to support PX30 specificities. Finally,
the PX30 DTSI is updated with CRTC routes, the DSI DPHY and the LVDS
IP itself.

Cheers,
Miquèl

Changes since v1:
* Added Rob's Ack.
* Used "must" instead of "should" in the bindings.
* Precised that phy-names is an optional property in the case of
  PX30.
* Renamed the WRITE_EN macro into HIWORD_UPDATE to be aligned with
  other files.
* Removed extra configuration, not needed for generic panels (see
  Sandy Huang answer).
* Dropped the display-subsystem routes (useless).
* Merged two patches to avoid phandle interdependencies in graphs and
  intermediate build errors.

Miquel Raynal (11):
  dt-bindings: display: rockchip-lvds: Declare PX30 compatible
  dt-bindings: display: rockchip-lvds: Document PX30 PHY
  drm/rockchip: lvds: Fix indentation of a #define
  drm/rockchip: lvds: Harmonize function names
  drm/rockchip: lvds: Change platform data
  drm/rockchip: lvds: Create an RK3288 specific probe function
  drm/rockchip: lvds: Helpers should return decent values
  drm/rockchip: lvds: Pack functions together
  drm/rockchip: lvds: Add PX30 support
  arm64: dts: rockchip: Add PX30 DSI DPHY
  arm64: dts: rockchip: Add PX30 LVDS

 .../display/rockchip/rockchip-lvds.txt        |   4 +
 arch/arm64/boot/dts/rockchip/px30.dtsi        |  48 ++
 drivers/gpu/drm/rockchip/rockchip_lvds.c      | 486 ++++++++++++------
 drivers/gpu/drm/rockchip/rockchip_lvds.h      |  19 +-
 4 files changed, 401 insertions(+), 156 deletions(-)

-- 
2.20.1

[PATCH v2 01/11] dt-bindings: display: rockchip-lvds: Declare PX30 compatible

[Miquel Raynal]

Document the PX30 LVDS compatible.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/display/rockchip/rockchip-lvds.txt       | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
index 7849ff039229..aa5663a6fd42 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
@@ -4,6 +4,7 @@ Rockchip RK3288 LVDS interface
 Required properties:
 - compatible: matching the soc type, one of
 	- "rockchip,rk3288-lvds";
+	- "rockchip,px30-lvds";
 
 - reg: physical base address of the controller and length
 	of memory mapped region.
-- 
2.20.1

[PATCH v2 02/11] dt-bindings: display: rockchip-lvds: Document PX30 PHY

[Miquel Raynal]

PX30 SoCs use a single PHY shared by two display pipelines: MIPI DSI
and LVDS. In the case of the LVDS IP, document the possibility to fill
a PHY handle.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 .../devicetree/bindings/display/rockchip/rockchip-lvds.txt     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
index aa5663a6fd42..aaf8c44cf90f 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-lvds.txt
@@ -19,6 +19,9 @@ Required properties:
 - rockchip,grf: phandle to the general register files syscon
 - rockchip,output: "rgb", "lvds" or "duallvds", This describes the output interface
 
+- phys: LVDS/DSI DPHY (px30 only)
+- phy-names: name of the PHY, must be "dphy" (px30 only)
+
 Optional properties:
 - pinctrl-names: must contain a "lcdc" entry.
 - pinctrl-0: pin control group to be used for this controller.
-- 
2.20.1

[PATCH v2 03/11] drm/rockchip: lvds: Fix indentation of a #define

[Miquel Raynal]

Fix a #define indentation before adding more lines.

Fixes: 34cc0aa25456 ("drm/rockchip: Add support for Rockchip Soc LVDS")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/gpu/drm/rockchip/rockchip_lvds.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.h b/drivers/gpu/drm/rockchip/rockchip_lvds.h
index 029bad8e1a14..1387bcbc4bc0 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.h
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.h
@@ -70,7 +70,7 @@
 #define RK3288_LVDS_CFG_REG21			0x84
 #define RK3288_LVDS_CFG_REG21_TX_ENABLE		0x92
 #define RK3288_LVDS_CFG_REG21_TX_DISABLE	0x00
-#define RK3288_LVDS_CH1_OFFSET                 0x100
+#define RK3288_LVDS_CH1_OFFSET			0x100
 
 /* fbdiv value is split over 2 registers, with bit8 in reg2 */
 #define RK3288_LVDS_PLL_FBDIV_REG2(_fbd) \
-- 
2.20.1

[PATCH v2 04/11] drm/rockchip: lvds: Harmonize function names

[Miquel Raynal]

Prepare the introduction of PX30 support by clarifying the function
prefixes.

We continue to prefix with 'rockchip_lvds_' generic functions that are
not specific to a single hardware. Functions implying hardware
modifications are now prefixed with 'rk3288_lvds_'.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/gpu/drm/rockchip/rockchip_lvds.c | 138 ++++++++++++-----------
 1 file changed, 73 insertions(+), 65 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c
index 64aefa856896..3c08e50923ae 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
@@ -66,7 +66,8 @@ struct rockchip_lvds {
 	struct dev_pin_info *pins;
 };
 
-static inline void lvds_writel(struct rockchip_lvds *lvds, u32 offset, u32 val)
+static inline void rk3288_writel(struct rockchip_lvds *lvds, u32 offset,
+				 u32 val)
 {
 	writel_relaxed(val, lvds->regs + offset);
 	if (lvds->output == DISPLAY_OUTPUT_LVDS)
@@ -74,7 +75,7 @@ static inline void lvds_writel(struct rockchip_lvds *lvds, u32 offset, u32 val)
 	writel_relaxed(val, lvds->regs + offset + lvds->soc_data->ch1_offset);
 }
 
-static inline int lvds_name_to_format(const char *s)
+static inline int rockchip_lvds_name_to_format(const char *s)
 {
 	if (strncmp(s, "jeida-18", 8) == 0)
 		return LVDS_JEIDA_18;
@@ -86,7 +87,7 @@ static inline int lvds_name_to_format(const char *s)
 	return -EINVAL;
 }
 
-static inline int lvds_name_to_output(const char *s)
+static inline int rockchip_lvds_name_to_output(const char *s)
 {
 	if (strncmp(s, "rgb", 3) == 0)
 		return DISPLAY_OUTPUT_RGB;
@@ -98,7 +99,7 @@ static inline int lvds_name_to_output(const char *s)
 	return -EINVAL;
 }
 
-static int rockchip_lvds_poweron(struct rockchip_lvds *lvds)
+static int rk3288_lvds_poweron(struct rockchip_lvds *lvds)
 {
 	int ret;
 	u32 val;
@@ -120,63 +121,70 @@ static int rockchip_lvds_poweron(struct rockchip_lvds *lvds)
 	if (lvds->output == DISPLAY_OUTPUT_RGB) {
 		val |= RK3288_LVDS_CH0_REG0_TTL_EN |
 			RK3288_LVDS_CH0_REG0_LANECK_EN;
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG0, val);
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
-			    RK3288_LVDS_PLL_FBDIV_REG2(0x46));
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG4,
-			    RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE |
-			    RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE |
-			    RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE |
-			    RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE |
-			    RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE |
-			    RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE);
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG5,
-			    RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA |
-			    RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA |
-			    RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA |
-			    RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA |
-			    RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA |
-			    RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA);
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val);
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG2,
+			      RK3288_LVDS_PLL_FBDIV_REG2(0x46));
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG4,
+			      RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE |
+			      RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE |
+			      RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE |
+			      RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE |
+			      RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE |
+			      RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE);
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG5,
+			      RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA |
+			      RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA |
+			      RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA |
+			      RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA |
+			      RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA |
+			      RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA);
 	} else {
 		val |= RK3288_LVDS_CH0_REG0_LVDS_EN |
 			    RK3288_LVDS_CH0_REG0_LANECK_EN;
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG0, val);
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG1,
-			    RK3288_LVDS_CH0_REG1_LANECK_BIAS |
-			    RK3288_LVDS_CH0_REG1_LANE4_BIAS |
-			    RK3288_LVDS_CH0_REG1_LANE3_BIAS |
-			    RK3288_LVDS_CH0_REG1_LANE2_BIAS |
-			    RK3288_LVDS_CH0_REG1_LANE1_BIAS |
-			    RK3288_LVDS_CH0_REG1_LANE0_BIAS);
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
-			    RK3288_LVDS_CH0_REG2_RESERVE_ON |
-			    RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE |
-			    RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE |
-			    RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE |
-			    RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE |
-			    RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE |
-			    RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE |
-			    RK3288_LVDS_PLL_FBDIV_REG2(0x46));
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00);
-		lvds_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00);
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val);
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG1,
+			      RK3288_LVDS_CH0_REG1_LANECK_BIAS |
+			      RK3288_LVDS_CH0_REG1_LANE4_BIAS |
+			      RK3288_LVDS_CH0_REG1_LANE3_BIAS |
+			      RK3288_LVDS_CH0_REG1_LANE2_BIAS |
+			      RK3288_LVDS_CH0_REG1_LANE1_BIAS |
+			      RK3288_LVDS_CH0_REG1_LANE0_BIAS);
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG2,
+			      RK3288_LVDS_CH0_REG2_RESERVE_ON |
+			      RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE |
+			      RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE |
+			      RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE |
+			      RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE |
+			      RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE |
+			      RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE |
+			      RK3288_LVDS_PLL_FBDIV_REG2(0x46));
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00);
+		rk3288_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00);
 	}
-	lvds_writel(lvds, RK3288_LVDS_CH0_REG3, RK3288_LVDS_PLL_FBDIV_REG3(0x46));
-	lvds_writel(lvds, RK3288_LVDS_CH0_REGD, RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
-	lvds_writel(lvds, RK3288_LVDS_CH0_REG20, RK3288_LVDS_CH0_REG20_LSB);
+	rk3288_writel(lvds, RK3288_LVDS_CH0_REG3,
+		      RK3288_LVDS_PLL_FBDIV_REG3(0x46));
+	rk3288_writel(lvds, RK3288_LVDS_CH0_REGD,
+		      RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
+	rk3288_writel(lvds, RK3288_LVDS_CH0_REG20,
+		      RK3288_LVDS_CH0_REG20_LSB);
 
-	lvds_writel(lvds, RK3288_LVDS_CFG_REGC, RK3288_LVDS_CFG_REGC_PLL_ENABLE);
-	lvds_writel(lvds, RK3288_LVDS_CFG_REG21, RK3288_LVDS_CFG_REG21_TX_ENABLE);
+	rk3288_writel(lvds, RK3288_LVDS_CFG_REGC,
+		      RK3288_LVDS_CFG_REGC_PLL_ENABLE);
+	rk3288_writel(lvds, RK3288_LVDS_CFG_REG21,
+		      RK3288_LVDS_CFG_REG21_TX_ENABLE);
 
 	return 0;
 }
 
-static void rockchip_lvds_poweroff(struct rockchip_lvds *lvds)
+static void rk3288_lvds_poweroff(struct rockchip_lvds *lvds)
 {
 	int ret;
 	u32 val;
 
-	lvds_writel(lvds, RK3288_LVDS_CFG_REG21, RK3288_LVDS_CFG_REG21_TX_ENABLE);
-	lvds_writel(lvds, RK3288_LVDS_CFG_REGC, RK3288_LVDS_CFG_REGC_PLL_ENABLE);
+	rk3288_writel(lvds, RK3288_LVDS_CFG_REG21,
+		      RK3288_LVDS_CFG_REG21_TX_ENABLE);
+	rk3288_writel(lvds, RK3288_LVDS_CFG_REGC,
+		      RK3288_LVDS_CFG_REGC_PLL_ENABLE);
 	val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN;
 	val |= val << 16;
 	ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
@@ -208,8 +216,8 @@ struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
 	.get_modes = rockchip_lvds_connector_get_modes,
 };
 
-static void rockchip_lvds_grf_config(struct drm_encoder *encoder,
-				     struct drm_display_mode *mode)
+static void rk3288_lvds_grf_config(struct drm_encoder *encoder,
+				   struct drm_display_mode *mode)
 {
 	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
 	u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;
@@ -240,8 +248,8 @@ static void rockchip_lvds_grf_config(struct drm_encoder *encoder,
 	}
 }
 
-static int rockchip_lvds_set_vop_source(struct rockchip_lvds *lvds,
-					struct drm_encoder *encoder)
+static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds,
+				      struct drm_encoder *encoder)
 {
 	u32 val;
 	int ret;
@@ -277,36 +285,36 @@ rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder,
 	return 0;
 }
 
-static void rockchip_lvds_encoder_enable(struct drm_encoder *encoder)
+static void rk3288_lvds_encoder_enable(struct drm_encoder *encoder)
 {
 	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
 	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
 	int ret;
 
 	drm_panel_prepare(lvds->panel);
-	ret = rockchip_lvds_poweron(lvds);
+	ret = rk3288_lvds_poweron(lvds);
 	if (ret < 0) {
 		DRM_DEV_ERROR(lvds->dev, "failed to power on lvds: %d\n", ret);
 		drm_panel_unprepare(lvds->panel);
 	}
-	rockchip_lvds_grf_config(encoder, mode);
-	rockchip_lvds_set_vop_source(lvds, encoder);
+	rk3288_lvds_grf_config(encoder, mode);
+	rk3288_lvds_set_vop_source(lvds, encoder);
 	drm_panel_enable(lvds->panel);
 }
 
-static void rockchip_lvds_encoder_disable(struct drm_encoder *encoder)
+static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder)
 {
 	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
 
 	drm_panel_disable(lvds->panel);
-	rockchip_lvds_poweroff(lvds);
+	rk3288_lvds_poweroff(lvds);
 	drm_panel_unprepare(lvds->panel);
 }
 
 static const
-struct drm_encoder_helper_funcs rockchip_lvds_encoder_helper_funcs = {
-	.enable = rockchip_lvds_encoder_enable,
-	.disable = rockchip_lvds_encoder_disable,
+struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
+	.enable = rk3288_lvds_encoder_enable,
+	.disable = rk3288_lvds_encoder_disable,
 	.atomic_check = rockchip_lvds_encoder_atomic_check,
 };
 
@@ -377,7 +385,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
 		/* default set it as output rgb */
 		lvds->output = DISPLAY_OUTPUT_RGB;
 	else
-		lvds->output = lvds_name_to_output(name);
+		lvds->output = rockchip_lvds_name_to_output(name);
 
 	if (lvds->output < 0) {
 		DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name);
@@ -389,7 +397,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
 		/* default set it as format vesa 18 */
 		lvds->format = LVDS_VESA_18;
 	else
-		lvds->format = lvds_name_to_format(name);
+		lvds->format = rockchip_lvds_name_to_format(name);
 
 	if (lvds->format < 0) {
 		DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name);
@@ -409,7 +417,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
 		goto err_put_remote;
 	}
 
-	drm_encoder_helper_add(encoder, &rockchip_lvds_encoder_helper_funcs);
+	drm_encoder_helper_add(encoder, &rk3288_lvds_encoder_helper_funcs);
 
 	if (lvds->panel) {
 		connector = &lvds->connector;
@@ -471,7 +479,7 @@ static void rockchip_lvds_unbind(struct device *dev, struct device *master,
 {
 	struct rockchip_lvds *lvds = dev_get_drvdata(dev);
 
-	rockchip_lvds_encoder_disable(&lvds->encoder);
+	rk3288_lvds_encoder_disable(&lvds->encoder);
 	if (lvds->panel)
 		drm_panel_detach(lvds->panel);
 	pm_runtime_disable(dev);
-- 
2.20.1

[PATCH v2 05/11] drm/rockchip: lvds: Change platform data

[Miquel Raynal]

Prepare the introduction of PX30 support by using
drm_encoder_helper_funcs as platform data instead of multiple register
names which are specific to rk3288 and not generic to all Rockchip
IPs. This way adding support for a new flavor of a similar IP will be
a matter of adding the relevant helper funcs.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/gpu/drm/rockchip/rockchip_lvds.c | 32 ++++++++----------------
 drivers/gpu/drm/rockchip/rockchip_lvds.h |  3 +++
 2 files changed, 14 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c
index 3c08e50923ae..271e126476e1 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
@@ -38,16 +38,10 @@
 
 /**
  * rockchip_lvds_soc_data - rockchip lvds Soc private data
- * @ch1_offset: lvds channel 1 registe offset
- * grf_soc_con6: general registe offset for LVDS contrl
- * grf_soc_con7: general registe offset for LVDS contrl
- * has_vop_sel: to indicate whether need to choose from different VOP.
+ * @helper_funcs: LVDS connector helper functions
  */
 struct rockchip_lvds_soc_data {
-	u32 ch1_offset;
-	int grf_soc_con6;
-	int grf_soc_con7;
-	bool has_vop_sel;
+	const struct drm_encoder_helper_funcs *helper_funcs;
 };
 
 struct rockchip_lvds {
@@ -72,7 +66,7 @@ static inline void rk3288_writel(struct rockchip_lvds *lvds, u32 offset,
 	writel_relaxed(val, lvds->regs + offset);
 	if (lvds->output == DISPLAY_OUTPUT_LVDS)
 		return;
-	writel_relaxed(val, lvds->regs + offset + lvds->soc_data->ch1_offset);
+	writel_relaxed(val, lvds->regs + offset + RK3288_LVDS_CH1_OFFSET);
 }
 
 static inline int rockchip_lvds_name_to_format(const char *s)
@@ -187,7 +181,7 @@ static void rk3288_lvds_poweroff(struct rockchip_lvds *lvds)
 		      RK3288_LVDS_CFG_REGC_PLL_ENABLE);
 	val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN;
 	val |= val << 16;
-	ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
+	ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val);
 	if (ret != 0)
 		DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);
 
@@ -241,7 +235,7 @@ static void rk3288_lvds_grf_config(struct drm_encoder *encoder,
 
 	val |= (pin_dclk << 8) | (pin_hsync << 9);
 	val |= (0xffff << 16);
-	ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
+	ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val);
 	if (ret != 0) {
 		DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);
 		return;
@@ -254,9 +248,6 @@ static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds,
 	u32 val;
 	int ret;
 
-	if (!lvds->soc_data->has_vop_sel)
-		return 0;
-
 	ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
 	if (ret < 0)
 		return ret;
@@ -265,7 +256,7 @@ static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds,
 	if (ret)
 		val |= RK3288_LVDS_SOC_CON6_SEL_VOP_LIT;
 
-	ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con6, val);
+	ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON6, val);
 	if (ret < 0)
 		return ret;
 
@@ -323,10 +314,7 @@ static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
 };
 
 static const struct rockchip_lvds_soc_data rk3288_lvds_data = {
-	.ch1_offset = 0x100,
-	.grf_soc_con6 = 0x025c,
-	.grf_soc_con7 = 0x0260,
-	.has_vop_sel = true,
+	.helper_funcs = &rk3288_lvds_encoder_helper_funcs,
 };
 
 static const struct of_device_id rockchip_lvds_dt_ids[] = {
@@ -417,7 +405,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
 		goto err_put_remote;
 	}
 
-	drm_encoder_helper_add(encoder, &rk3288_lvds_encoder_helper_funcs);
+	drm_encoder_helper_add(encoder, lvds->soc_data->helper_funcs);
 
 	if (lvds->panel) {
 		connector = &lvds->connector;
@@ -478,8 +466,10 @@ static void rockchip_lvds_unbind(struct device *dev, struct device *master,
 				void *data)
 {
 	struct rockchip_lvds *lvds = dev_get_drvdata(dev);
+	const struct drm_encoder_helper_funcs *encoder_funcs;
 
-	rk3288_lvds_encoder_disable(&lvds->encoder);
+	encoder_funcs = lvds->soc_data->helper_funcs;
+	encoder_funcs->disable(&lvds->encoder);
 	if (lvds->panel)
 		drm_panel_detach(lvds->panel);
 	pm_runtime_disable(dev);
diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.h b/drivers/gpu/drm/rockchip/rockchip_lvds.h
index 1387bcbc4bc0..e41e9ab3c306 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.h
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.h
@@ -72,6 +72,9 @@
 #define RK3288_LVDS_CFG_REG21_TX_DISABLE	0x00
 #define RK3288_LVDS_CH1_OFFSET			0x100
 
+#define RK3288_LVDS_GRF_SOC_CON6		0x025C
+#define RK3288_LVDS_GRF_SOC_CON7		0x0260
+
 /* fbdiv value is split over 2 registers, with bit8 in reg2 */
 #define RK3288_LVDS_PLL_FBDIV_REG2(_fbd) \
 		(_fbd & BIT(8) ? RK3288_LVDS_CH0_REG2_PLL_FBDIV8 : 0)
-- 
2.20.1

[PATCH v2 06/11] drm/rockchip: lvds: Create an RK3288 specific probe function

[Miquel Raynal]

The probe function is highly tighten to the RK3288 specificities, move
all specific bits into an "rk3288_probe" function, also part of the
platform data.

The goal is to ease the addition of new flavors of Rockchip LVDS IPs.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/gpu/drm/rockchip/rockchip_lvds.c | 94 ++++++++++++++----------
 1 file changed, 57 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c
index 271e126476e1..731aba25bec5 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
@@ -30,6 +30,8 @@
 #define DISPLAY_OUTPUT_LVDS		1
 #define DISPLAY_OUTPUT_DUAL_LVDS	2
 
+struct rockchip_lvds;
+
 #define connector_to_lvds(c) \
 		container_of(c, struct rockchip_lvds, connector)
 
@@ -38,9 +40,11 @@
 
 /**
  * rockchip_lvds_soc_data - rockchip lvds Soc private data
+ * @probe: LVDS platform probe function
  * @helper_funcs: LVDS connector helper functions
  */
 struct rockchip_lvds_soc_data {
+	int (*probe)(struct platform_device *pdev, struct rockchip_lvds *lvds);
 	const struct drm_encoder_helper_funcs *helper_funcs;
 };
 
@@ -302,6 +306,52 @@ static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder)
 	drm_panel_unprepare(lvds->panel);
 }
 
+static int rk3288_lvds_probe(struct platform_device *pdev,
+			     struct rockchip_lvds *lvds)
+{
+	struct resource *res;
+	int ret;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	lvds->regs = devm_ioremap_resource(lvds->dev, res);
+	if (IS_ERR(lvds->regs))
+		return PTR_ERR(lvds->regs);
+
+	lvds->pclk = devm_clk_get(lvds->dev, "pclk_lvds");
+	if (IS_ERR(lvds->pclk)) {
+		DRM_DEV_ERROR(lvds->dev, "could not get pclk_lvds\n");
+		return PTR_ERR(lvds->pclk);
+	}
+
+	lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins),
+				  GFP_KERNEL);
+	if (!lvds->pins)
+		return -ENOMEM;
+
+	lvds->pins->p = devm_pinctrl_get(lvds->dev);
+	if (IS_ERR(lvds->pins->p)) {
+		DRM_DEV_ERROR(lvds->dev, "no pinctrl handle\n");
+		devm_kfree(lvds->dev, lvds->pins);
+		lvds->pins = NULL;
+	} else {
+		lvds->pins->default_state =
+			pinctrl_lookup_state(lvds->pins->p, "lcdc");
+		if (IS_ERR(lvds->pins->default_state)) {
+			DRM_DEV_ERROR(lvds->dev, "no default pinctrl state\n");
+			devm_kfree(lvds->dev, lvds->pins);
+			lvds->pins = NULL;
+		}
+	}
+
+	ret = clk_prepare(lvds->pclk);
+	if (ret < 0) {
+		DRM_DEV_ERROR(lvds->dev, "failed to prepare pclk_lvds\n");
+		return ret;
+	}
+
+	return 0;
+}
+
 static const
 struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
 	.enable = rk3288_lvds_encoder_enable,
@@ -314,6 +364,7 @@ static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
 };
 
 static const struct rockchip_lvds_soc_data rk3288_lvds_data = {
+	.probe = rk3288_lvds_probe,
 	.helper_funcs = &rk3288_lvds_encoder_helper_funcs,
 };
 
@@ -487,7 +538,6 @@ static int rockchip_lvds_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct rockchip_lvds *lvds;
 	const struct of_device_id *match;
-	struct resource *res;
 	int ret;
 
 	if (!dev->of_node)
@@ -503,37 +553,6 @@ static int rockchip_lvds_probe(struct platform_device *pdev)
 		return -ENODEV;
 	lvds->soc_data = match->data;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	lvds->regs = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(lvds->regs))
-		return PTR_ERR(lvds->regs);
-
-	lvds->pclk = devm_clk_get(&pdev->dev, "pclk_lvds");
-	if (IS_ERR(lvds->pclk)) {
-		DRM_DEV_ERROR(dev, "could not get pclk_lvds\n");
-		return PTR_ERR(lvds->pclk);
-	}
-
-	lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins),
-				  GFP_KERNEL);
-	if (!lvds->pins)
-		return -ENOMEM;
-
-	lvds->pins->p = devm_pinctrl_get(lvds->dev);
-	if (IS_ERR(lvds->pins->p)) {
-		DRM_DEV_ERROR(dev, "no pinctrl handle\n");
-		devm_kfree(lvds->dev, lvds->pins);
-		lvds->pins = NULL;
-	} else {
-		lvds->pins->default_state =
-			pinctrl_lookup_state(lvds->pins->p, "lcdc");
-		if (IS_ERR(lvds->pins->default_state)) {
-			DRM_DEV_ERROR(dev, "no default pinctrl state\n");
-			devm_kfree(lvds->dev, lvds->pins);
-			lvds->pins = NULL;
-		}
-	}
-
 	lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
 						    "rockchip,grf");
 	if (IS_ERR(lvds->grf)) {
@@ -541,13 +560,14 @@ static int rockchip_lvds_probe(struct platform_device *pdev)
 		return PTR_ERR(lvds->grf);
 	}
 
+	ret = lvds->soc_data->probe(pdev, lvds);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "Platform initialization failed\n");
+		return ret;
+	}
+
 	dev_set_drvdata(dev, lvds);
 
-	ret = clk_prepare(lvds->pclk);
-	if (ret < 0) {
-		DRM_DEV_ERROR(dev, "failed to prepare pclk_lvds\n");
-		return ret;
-	}
 	ret = component_add(&pdev->dev, &rockchip_lvds_component_ops);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev, "failed to add component\n");
-- 
2.20.1

[PATCH v2 07/11] drm/rockchip: lvds: Helpers should return decent values

[Miquel Raynal]

Return errors instead of returning void from internal helpers. When
these helpers are called, check the returned value and print an error
message in this case.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/gpu/drm/rockchip/rockchip_lvds.c | 31 ++++++++++++++++++------
 1 file changed, 23 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c
index 731aba25bec5..40fa49fe9fa5 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
@@ -214,8 +214,8 @@ struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
 	.get_modes = rockchip_lvds_connector_get_modes,
 };
 
-static void rk3288_lvds_grf_config(struct drm_encoder *encoder,
-				   struct drm_display_mode *mode)
+static int rk3288_lvds_grf_config(struct drm_encoder *encoder,
+				  struct drm_display_mode *mode)
 {
 	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
 	u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;
@@ -240,10 +240,10 @@ static void rk3288_lvds_grf_config(struct drm_encoder *encoder,
 	val |= (pin_dclk << 8) | (pin_hsync << 9);
 	val |= (0xffff << 16);
 	ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val);
-	if (ret != 0) {
+	if (ret)
 		DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);
-		return;
-	}
+
+	return ret;
 }
 
 static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds,
@@ -287,13 +287,28 @@ static void rk3288_lvds_encoder_enable(struct drm_encoder *encoder)
 	int ret;
 
 	drm_panel_prepare(lvds->panel);
+
 	ret = rk3288_lvds_poweron(lvds);
 	if (ret < 0) {
-		DRM_DEV_ERROR(lvds->dev, "failed to power on lvds: %d\n", ret);
+		DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret);
 		drm_panel_unprepare(lvds->panel);
+		return;
 	}
-	rk3288_lvds_grf_config(encoder, mode);
-	rk3288_lvds_set_vop_source(lvds, encoder);
+
+	ret = rk3288_lvds_grf_config(encoder, mode);
+	if (ret) {
+		DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret);
+		drm_panel_unprepare(lvds->panel);
+		return;
+	}
+
+	ret = rk3288_lvds_set_vop_source(lvds, encoder);
+	if (ret) {
+		DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret);
+		drm_panel_unprepare(lvds->panel);
+		return;
+	}
+
 	drm_panel_enable(lvds->panel);
 }
 
-- 
2.20.1

[PATCH v2 08/11] drm/rockchip: lvds: Pack functions together

[Miquel Raynal]

Reorganize a bit the functions order to clarify the driver. This
change only moves functions around, there is no functional change.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/gpu/drm/rockchip/rockchip_lvds.c | 90 ++++++++++++------------
 1 file changed, 45 insertions(+), 45 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c
index 40fa49fe9fa5..f2ece09e4e24 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
@@ -97,6 +97,40 @@ static inline int rockchip_lvds_name_to_output(const char *s)
 	return -EINVAL;
 }
 
+static const struct drm_connector_funcs rockchip_lvds_connector_funcs = {
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.reset = drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int rockchip_lvds_connector_get_modes(struct drm_connector *connector)
+{
+	struct rockchip_lvds *lvds = connector_to_lvds(connector);
+	struct drm_panel *panel = lvds->panel;
+
+	return drm_panel_get_modes(panel);
+}
+
+static const
+struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
+	.get_modes = rockchip_lvds_connector_get_modes,
+};
+
+static int
+rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder,
+				   struct drm_crtc_state *crtc_state,
+				   struct drm_connector_state *conn_state)
+{
+	struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
+
+	s->output_mode = ROCKCHIP_OUT_MODE_P888;
+	s->output_type = DRM_MODE_CONNECTOR_LVDS;
+
+	return 0;
+}
+
 static int rk3288_lvds_poweron(struct rockchip_lvds *lvds)
 {
 	int ret;
@@ -193,27 +227,6 @@ static void rk3288_lvds_poweroff(struct rockchip_lvds *lvds)
 	clk_disable(lvds->pclk);
 }
 
-static const struct drm_connector_funcs rockchip_lvds_connector_funcs = {
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.reset = drm_atomic_helper_connector_reset,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int rockchip_lvds_connector_get_modes(struct drm_connector *connector)
-{
-	struct rockchip_lvds *lvds = connector_to_lvds(connector);
-	struct drm_panel *panel = lvds->panel;
-
-	return drm_panel_get_modes(panel);
-}
-
-static const
-struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
-	.get_modes = rockchip_lvds_connector_get_modes,
-};
-
 static int rk3288_lvds_grf_config(struct drm_encoder *encoder,
 				  struct drm_display_mode *mode)
 {
@@ -267,19 +280,6 @@ static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds,
 	return 0;
 }
 
-static int
-rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder,
-				   struct drm_crtc_state *crtc_state,
-				   struct drm_connector_state *conn_state)
-{
-	struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
-
-	s->output_mode = ROCKCHIP_OUT_MODE_P888;
-	s->output_type = DRM_MODE_CONNECTOR_LVDS;
-
-	return 0;
-}
-
 static void rk3288_lvds_encoder_enable(struct drm_encoder *encoder)
 {
 	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
@@ -321,6 +321,17 @@ static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder)
 	drm_panel_unprepare(lvds->panel);
 }
 
+static const
+struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
+	.enable = rk3288_lvds_encoder_enable,
+	.disable = rk3288_lvds_encoder_disable,
+	.atomic_check = rockchip_lvds_encoder_atomic_check,
+};
+
+static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
 static int rk3288_lvds_probe(struct platform_device *pdev,
 			     struct rockchip_lvds *lvds)
 {
@@ -367,17 +378,6 @@ static int rk3288_lvds_probe(struct platform_device *pdev,
 	return 0;
 }
 
-static const
-struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
-	.enable = rk3288_lvds_encoder_enable,
-	.disable = rk3288_lvds_encoder_disable,
-	.atomic_check = rockchip_lvds_encoder_atomic_check,
-};
-
-static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
 static const struct rockchip_lvds_soc_data rk3288_lvds_data = {
 	.probe = rk3288_lvds_probe,
 	.helper_funcs = &rk3288_lvds_encoder_helper_funcs,
-- 
2.20.1

[PATCH v2 09/11] drm/rockchip: lvds: Add PX30 support

[Miquel Raynal]

Introduce PX30 LVDS support. This means adding the relevant helper
functions, a specific probe and also the initialization of a specific
PHY.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/gpu/drm/rockchip/rockchip_lvds.c | 143 +++++++++++++++++++++++
 drivers/gpu/drm/rockchip/rockchip_lvds.h |  14 +++
 2 files changed, 157 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c
index f2ece09e4e24..d762cdd114f9 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
@@ -10,6 +10,7 @@
 #include <linux/component.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of_graph.h>
+#include <linux/phy/phy.h>
 #include <linux/pinctrl/devinfo.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
@@ -53,6 +54,7 @@ struct rockchip_lvds {
 	void __iomem *regs;
 	struct regmap *grf;
 	struct clk *pclk;
+	struct phy *dphy;
 	const struct rockchip_lvds_soc_data *soc_data;
 	int output; /* rgb lvds or dual lvds output */
 	int format; /* vesa or jeida format */
@@ -321,6 +323,103 @@ static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder)
 	drm_panel_unprepare(lvds->panel);
 }
 
+static int px30_lvds_poweron(struct rockchip_lvds *lvds)
+{
+	int ret;
+
+	ret = pm_runtime_get_sync(lvds->dev);
+	if (ret < 0) {
+		DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret);
+		return ret;
+	}
+
+	/* Enable LVDS mode */
+	return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
+				  PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),
+				  PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1));
+}
+
+static void px30_lvds_poweroff(struct rockchip_lvds *lvds)
+{
+	regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
+			   PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),
+			   PX30_LVDS_MODE_EN(0) | PX30_LVDS_P2S_EN(0));
+
+	pm_runtime_put(lvds->dev);
+}
+
+static int px30_lvds_grf_config(struct drm_encoder *encoder,
+				struct drm_display_mode *mode)
+{
+	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
+
+	if (lvds->output != DISPLAY_OUTPUT_LVDS) {
+		DRM_DEV_ERROR(lvds->dev, "Unsupported display output %d\n",
+			      lvds->output);
+		return -EINVAL;
+	}
+
+	/* Set format */
+	return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
+				  PX30_LVDS_FORMAT(lvds->format),
+				  PX30_LVDS_FORMAT(lvds->format));
+}
+
+static int px30_lvds_set_vop_source(struct rockchip_lvds *lvds,
+				    struct drm_encoder *encoder)
+{
+	int vop;
+
+	vop = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
+	if (vop < 0)
+		return vop;
+
+	return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
+				  PX30_LVDS_VOP_SEL(1),
+				  PX30_LVDS_VOP_SEL(vop));
+}
+
+static void px30_lvds_encoder_enable(struct drm_encoder *encoder)
+{
+	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
+	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+	int ret;
+
+	drm_panel_prepare(lvds->panel);
+
+	ret = px30_lvds_poweron(lvds);
+	if (ret) {
+		DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret);
+		drm_panel_unprepare(lvds->panel);
+		return;
+	}
+
+	ret = px30_lvds_grf_config(encoder, mode);
+	if (ret) {
+		DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret);
+		drm_panel_unprepare(lvds->panel);
+		return;
+	}
+
+	ret = px30_lvds_set_vop_source(lvds, encoder);
+	if (ret) {
+		DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret);
+		drm_panel_unprepare(lvds->panel);
+		return;
+	}
+
+	drm_panel_enable(lvds->panel);
+}
+
+static void px30_lvds_encoder_disable(struct drm_encoder *encoder)
+{
+	struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
+
+	drm_panel_disable(lvds->panel);
+	px30_lvds_poweroff(lvds);
+	drm_panel_unprepare(lvds->panel);
+}
+
 static const
 struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
 	.enable = rk3288_lvds_encoder_enable,
@@ -328,6 +427,13 @@ struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
 	.atomic_check = rockchip_lvds_encoder_atomic_check,
 };
 
+static const
+struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = {
+	.enable = px30_lvds_encoder_enable,
+	.disable = px30_lvds_encoder_disable,
+	.atomic_check = rockchip_lvds_encoder_atomic_check,
+};
+
 static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
 	.destroy = drm_encoder_cleanup,
 };
@@ -378,16 +484,53 @@ static int rk3288_lvds_probe(struct platform_device *pdev,
 	return 0;
 }
 
+static int px30_lvds_probe(struct platform_device *pdev,
+			   struct rockchip_lvds *lvds)
+{
+	int ret;
+
+	/* MSB */
+	ret =  regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
+				  PX30_LVDS_MSBSEL(1),
+				  PX30_LVDS_MSBSEL(1));
+	if (ret)
+		return ret;
+
+	/* PHY */
+	lvds->dphy = devm_phy_get(&pdev->dev, "dphy");
+	if (IS_ERR(lvds->dphy))
+		return PTR_ERR(lvds->dphy);
+
+	phy_init(lvds->dphy);
+	if (ret)
+		return ret;
+
+	phy_set_mode(lvds->dphy, PHY_MODE_LVDS);
+	if (ret)
+		return ret;
+
+	return phy_power_on(lvds->dphy);
+}
+
 static const struct rockchip_lvds_soc_data rk3288_lvds_data = {
 	.probe = rk3288_lvds_probe,
 	.helper_funcs = &rk3288_lvds_encoder_helper_funcs,
 };
 
+static const struct rockchip_lvds_soc_data px30_lvds_data = {
+	.probe = px30_lvds_probe,
+	.helper_funcs = &px30_lvds_encoder_helper_funcs,
+};
+
 static const struct of_device_id rockchip_lvds_dt_ids[] = {
 	{
 		.compatible = "rockchip,rk3288-lvds",
 		.data = &rk3288_lvds_data
 	},
+	{
+		.compatible = "rockchip,px30-lvds",
+		.data = &px30_lvds_data
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids);
diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.h b/drivers/gpu/drm/rockchip/rockchip_lvds.h
index e41e9ab3c306..ff3cffc4770d 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.h
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.h
@@ -106,4 +106,18 @@
 #define LVDS_VESA_18				2
 #define LVDS_JEIDA_18				3
 
+#define HIWORD_UPDATE(v, h, l)  ((GENMASK(h, l) << 16) | (v << l))
+
+#define PX30_LVDS_GRF_PD_VO_CON0		0x434
+#define   PX30_LVDS_TIE_CLKS(val)		HIWORD_UPDATE(val,  8,  8)
+#define   PX30_LVDS_INVERT_CLKS(val)		HIWORD_UPDATE(val,  9,  9)
+#define   PX30_LVDS_INVERT_DCLK(val)		HIWORD_UPDATE(val,  5,  5)
+
+#define PX30_LVDS_GRF_PD_VO_CON1		0x438
+#define   PX30_LVDS_FORMAT(val)			HIWORD_UPDATE(val, 14, 13)
+#define   PX30_LVDS_MODE_EN(val)		HIWORD_UPDATE(val, 12, 12)
+#define   PX30_LVDS_MSBSEL(val)			HIWORD_UPDATE(val, 11, 11)
+#define   PX30_LVDS_P2S_EN(val)			HIWORD_UPDATE(val,  6,  6)
+#define   PX30_LVDS_VOP_SEL(val)		HIWORD_UPDATE(val,  1,  1)
+
 #endif /* _ROCKCHIP_LVDS_ */
-- 
2.20.1

[PATCH v2 10/11] arm64: dts: rockchip: Add PX30 DSI DPHY

[Miquel Raynal]

Add the PHY which outputs MIPI DSI and LVDS.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 arch/arm64/boot/dts/rockchip/px30.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/px30.dtsi b/arch/arm64/boot/dts/rockchip/px30.dtsi
index b2af0f02ecbe..672a3a2f42b9 100644
--- a/arch/arm64/boot/dts/rockchip/px30.dtsi
+++ b/arch/arm64/boot/dts/rockchip/px30.dtsi
@@ -849,6 +849,17 @@
 		};
 	};
 
+	dsi_dphy: phy@ff2e0000 {
+		compatible = "rockchip,px30-dsi-dphy";
+		reg = <0x0 0xff2e0000 0x0 0x10000>;
+		clocks = <&pmucru SCLK_MIPIDSIPHY_REF>, <&cru PCLK_MIPIDSIPHY>;
+		clock-names = "ref", "pclk";
+		resets = <&cru SRST_MIPIDSIPHY_P>;
+		reset-names = "apb";
+		#phy-cells = <0>;
+		status = "disabled";
+	};
+
 	usb20_otg: usb@ff300000 {
 		compatible = "rockchip,px30-usb", "rockchip,rk3066-usb",
 			     "snps,dwc2";
-- 
2.20.1

[PATCH v2 11/11] arm64: dts: rockchip: Add PX30 LVDS

[Miquel Raynal]

Describe LVDS IP. Add the CRTC and LVDS relevant endpoints so they can
be linked together.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 arch/arm64/boot/dts/rockchip/px30.dtsi | 37 ++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/px30.dtsi b/arch/arm64/boot/dts/rockchip/px30.dtsi
index 672a3a2f42b9..f99988b08244 100644
--- a/arch/arm64/boot/dts/rockchip/px30.dtsi
+++ b/arch/arm64/boot/dts/rockchip/px30.dtsi
@@ -439,6 +439,33 @@
 			compatible = "rockchip,px30-io-voltage-domain";
 			status = "disabled";
 		};
+
+		lvds: lvds {
+			compatible = "rockchip,px30-lvds";
+			rockchip,grf = <&grf>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			phys = <&dsi_dphy>;
+			phy-names = "dphy";
+			rockchip,output = "lvds";
+			status = "disabled";
+
+			port@0 {
+				reg = <0>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				lvds_vopb_in: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&vopb_out_lvds>;
+				};
+
+				lvds_vopl_in: endpoint@1 {
+					reg = <1>;
+					remote-endpoint = <&vopl_out_lvds>;
+				};
+			};
+		};
 	};
 
 	uart1: serial@ff158000 {
@@ -987,6 +1014,11 @@
 		vopb_out: port {
 			#address-cells = <1>;
 			#size-cells = <0>;
+
+			vopb_out_lvds: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&lvds_vopb_in>;
+			};
 		};
 	};
 
@@ -1019,6 +1051,11 @@
 		vopl_out: port {
 			#address-cells = <1>;
 			#size-cells = <0>;
+
+			vopl_out_lvds: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&lvds_vopl_in>;
+			};
 		};
 	};
 
-- 
2.20.1

Re: [PATCH v2 10/11] arm64: dts: rockchip: Add PX30 DSI DPHY

[Heiko Stuebner]

Am Dienstag, 24. Dezember 2019, 15:38:59 CET schrieb Miquel Raynal:
> Add the PHY which outputs MIPI DSI and LVDS.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

applied for 5.6 (picked early due to it being shared between lvds and dsi)

Thanks
Heiko

Re: [PATCH v2 10/11] arm64: dts: rockchip: Add PX30 DSI DPHY

[Heiko Stuebner]

Am Dienstag, 31. Dezember 2019, 12:56:14 CET schrieb Heiko Stuebner:
> Am Dienstag, 24. Dezember 2019, 15:38:59 CET schrieb Miquel Raynal:
> > Add the PHY which outputs MIPI DSI and LVDS.
> > 
> > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> 
> applied for 5.6 (picked early due to it being shared between lvds and dsi)

and I've just added the VO powerdomain to the dsi-dphy node.

While the TRM is not really forthcoming in telling me if the dphy needs
the power-domain as well, the vendor kernel does, so we should probably
just follow their example ;-) .


Heiko

Re: [PATCH v2 10/11] arm64: dts: rockchip: Add PX30 DSI DPHY

[Miquel Raynal]

Hi Heiko,

Heiko Stuebner <heiko@sntech.de> wrote on Tue, 31 Dec 2019 13:14:02
+0100:

> Am Dienstag, 31. Dezember 2019, 12:56:14 CET schrieb Heiko Stuebner:
> > Am Dienstag, 24. Dezember 2019, 15:38:59 CET schrieb Miquel Raynal:  
> > > Add the PHY which outputs MIPI DSI and LVDS.
> > > 
> > > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>  
> > 
> > applied for 5.6 (picked early due to it being shared between lvds and dsi)  
> 
> and I've just added the VO powerdomain to the dsi-dphy node.
> 
> While the TRM is not really forthcoming in telling me if the dphy needs
> the power-domain as well, the vendor kernel does, so we should probably
> just follow their example ;-) .

Agreed!

Miquèl

Re: [PATCH v2 02/11] dt-bindings: display: rockchip-lvds: Document PX30 PHY

[Rob Herring]

On Tue, 24 Dec 2019 15:38:51 +0100, Miquel Raynal wrote:
> PX30 SoCs use a single PHY shared by two display pipelines: MIPI DSI
> and LVDS. In the case of the LVDS IP, document the possibility to fill
> a PHY handle.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  .../devicetree/bindings/display/rockchip/rockchip-lvds.txt     | 3 +++
>  1 file changed, 3 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH v2 00/11] Add PX30 LVDS support

[Heiko Stuebner]

Am Dienstag, 24. Dezember 2019, 15:38:49 CET schrieb Miquel Raynal:
> Hello,
> 
> This series aims at supporting LVDS on PX30.
> 
> A first couple of patches update the documentation with the new
> compatible and the presence of a PHY. Then, the existing Rockchip
> driver is cleaned and extended to support PX30 specificities. Finally,
> the PX30 DTSI is updated with CRTC routes, the DSI DPHY and the LVDS
> IP itself.
> 
> Cheers,
> Miquèl
> 
> Changes since v1:
> * Added Rob's Ack.
> * Used "must" instead of "should" in the bindings.
> * Precised that phy-names is an optional property in the case of
>   PX30.
> * Renamed the WRITE_EN macro into HIWORD_UPDATE to be aligned with
>   other files.
> * Removed extra configuration, not needed for generic panels (see
>   Sandy Huang answer).
> * Dropped the display-subsystem routes (useless).
> * Merged two patches to avoid phandle interdependencies in graphs and
>   intermediate build errors.
> 
> Miquel Raynal (11):
>   dt-bindings: display: rockchip-lvds: Declare PX30 compatible
>   dt-bindings: display: rockchip-lvds: Document PX30 PHY
>   drm/rockchip: lvds: Fix indentation of a #define
>   drm/rockchip: lvds: Harmonize function names
>   drm/rockchip: lvds: Change platform data
>   drm/rockchip: lvds: Create an RK3288 specific probe function
>   drm/rockchip: lvds: Helpers should return decent values
>   drm/rockchip: lvds: Pack functions together

applied patches 1-8 to drm-misc-next

>   drm/rockchip: lvds: Add PX30 support

drm-misc-next is currently still at 5.4-rc4, so I'll need to find out how
to get newer kernel changes in there, as right now we're missing
the PHY_MODE_LVDS constant.


Heiko

>   arm64: dts: rockchip: Add PX30 DSI DPHY
>   arm64: dts: rockchip: Add PX30 LVDS
> 
>  .../display/rockchip/rockchip-lvds.txt        |   4 +
>  arch/arm64/boot/dts/rockchip/px30.dtsi        |  48 ++
>  drivers/gpu/drm/rockchip/rockchip_lvds.c      | 486 ++++++++++++------
>  drivers/gpu/drm/rockchip/rockchip_lvds.h      |  19 +-
>  4 files changed, 401 insertions(+), 156 deletions(-)
> 
> 

Re: [PATCH v2 00/11] Add PX30 LVDS support

[Heiko Stübner]

Am Sonntag, 5. Januar 2020, 15:05:26 CET schrieb Heiko Stuebner:
> Am Dienstag, 24. Dezember 2019, 15:38:49 CET schrieb Miquel Raynal:
> > Hello,
> > 
> > This series aims at supporting LVDS on PX30.
> > 
> > A first couple of patches update the documentation with the new
> > compatible and the presence of a PHY. Then, the existing Rockchip
> > driver is cleaned and extended to support PX30 specificities. Finally,
> > the PX30 DTSI is updated with CRTC routes, the DSI DPHY and the LVDS
> > IP itself.
> > 
> > Cheers,
> > Miquèl
> > 
> > Changes since v1:
> > * Added Rob's Ack.
> > * Used "must" instead of "should" in the bindings.
> > * Precised that phy-names is an optional property in the case of
> >   PX30.
> > * Renamed the WRITE_EN macro into HIWORD_UPDATE to be aligned with
> >   other files.
> > * Removed extra configuration, not needed for generic panels (see
> >   Sandy Huang answer).
> > * Dropped the display-subsystem routes (useless).
> > * Merged two patches to avoid phandle interdependencies in graphs and
> >   intermediate build errors.
> > 
> > Miquel Raynal (11):
> >   dt-bindings: display: rockchip-lvds: Declare PX30 compatible
> >   dt-bindings: display: rockchip-lvds: Document PX30 PHY
> >   drm/rockchip: lvds: Fix indentation of a #define
> >   drm/rockchip: lvds: Harmonize function names
> >   drm/rockchip: lvds: Change platform data
> >   drm/rockchip: lvds: Create an RK3288 specific probe function
> >   drm/rockchip: lvds: Helpers should return decent values
> >   drm/rockchip: lvds: Pack functions together
> 
> applied patches 1-8 to drm-misc-next
> 
> >   drm/rockchip: lvds: Add PX30 support
> 
> drm-misc-next is currently still at 5.4-rc4, so I'll need to find out how
> to get newer kernel changes in there, as right now we're missing
> the PHY_MODE_LVDS constant.

applied now to drm-misc-next as well, after drm-misc maintainers did the
requested back-merge to get that constant.

Heiko

Re: [PATCH v2 11/11] arm64: dts: rockchip: Add PX30 LVDS

[Heiko Stuebner]

Am Dienstag, 24. Dezember 2019, 15:39:00 CET schrieb Miquel Raynal:
> Describe LVDS IP. Add the CRTC and LVDS relevant endpoints so they can
> be linked together.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

> +
> +			vopb_out_lvds: endpoint@0 {
> +				reg = <0>;
> +				remote-endpoint = <&lvds_vopb_in>;
> +			};

> +
> +			vopl_out_lvds: endpoint@0 {
> +				reg = <0>;
> +				remote-endpoint = <&lvds_vopl_in>;
> +			};

applied for 5.6, with the endpoints becoming @1 after the dsi

Thanks
Heiko

Re: [PATCH v2 00/11] Add PX30 LVDS support

[Miquel Raynal]

Hi Heiko,

Heiko Stübner <heiko@sntech.de> wrote on Mon, 06 Jan 2020 12:09:19
+0100:

> Am Sonntag, 5. Januar 2020, 15:05:26 CET schrieb Heiko Stuebner:
> > Am Dienstag, 24. Dezember 2019, 15:38:49 CET schrieb Miquel Raynal:  
> > > Hello,
> > > 
> > > This series aims at supporting LVDS on PX30.
> > > 
> > > A first couple of patches update the documentation with the new
> > > compatible and the presence of a PHY. Then, the existing Rockchip
> > > driver is cleaned and extended to support PX30 specificities. Finally,
> > > the PX30 DTSI is updated with CRTC routes, the DSI DPHY and the LVDS
> > > IP itself.
> > > 
> > > Cheers,
> > > Miquèl
> > > 
> > > Changes since v1:
> > > * Added Rob's Ack.
> > > * Used "must" instead of "should" in the bindings.
> > > * Precised that phy-names is an optional property in the case of
> > >   PX30.
> > > * Renamed the WRITE_EN macro into HIWORD_UPDATE to be aligned with
> > >   other files.
> > > * Removed extra configuration, not needed for generic panels (see
> > >   Sandy Huang answer).
> > > * Dropped the display-subsystem routes (useless).
> > > * Merged two patches to avoid phandle interdependencies in graphs and
> > >   intermediate build errors.
> > > 
> > > Miquel Raynal (11):
> > >   dt-bindings: display: rockchip-lvds: Declare PX30 compatible
> > >   dt-bindings: display: rockchip-lvds: Document PX30 PHY
> > >   drm/rockchip: lvds: Fix indentation of a #define
> > >   drm/rockchip: lvds: Harmonize function names
> > >   drm/rockchip: lvds: Change platform data
> > >   drm/rockchip: lvds: Create an RK3288 specific probe function
> > >   drm/rockchip: lvds: Helpers should return decent values
> > >   drm/rockchip: lvds: Pack functions together  
> > 
> > applied patches 1-8 to drm-misc-next
> >   
> > >   drm/rockchip: lvds: Add PX30 support  
> > 
> > drm-misc-next is currently still at 5.4-rc4, so I'll need to find out how
> > to get newer kernel changes in there, as right now we're missing
> > the PHY_MODE_LVDS constant.  
> 
> applied now to drm-misc-next as well, after drm-misc maintainers did the
> requested back-merge to get that constant.

Great! Thanks a lot for your time!

Miquèl