[PATCH v13 0/9] MIPS: JZ4780 and CI20 HDMI

[PATCH v13 0/9] MIPS: JZ4780 and CI20 HDMI

[H. Nikolaus Schaller]

PATCH V13 2022-02-02 17:31:22:
* 7/9: remove call to gpiod_set_value() because of GPIOD_OUT_HIGH (by paul@crapouillou.net)
* 4/9: replace ".." by "." (by paul@crapouillou.net)
* 3/9: remove old hdmi-5v-power in the example (by paul@crapouillou.net)
* 2/9: disable handling of plane f0 only for jz4780 (by paul@crapouillou.net)

PATCH V12 2022-01-31 13:26:54:
This version reworks how hdmi ddc power is controlled by connector and not
by ddc/hdmi bridge driver.

Also some patches of the previous version of this series have been removed
since they are already applied to mips-next/linux/next/v5.17-rc1.

Fixes and changes:

- repair interworking of dw-hdmi with connector-hdmi (by hns@goldelico.com)
- fix JZ_REG_LCD_OSDC setup for jz4780 (by hns@goldelico.com and paul@crapouillou.net)
- adjustments for ci20.dts to use connector gpio for +5v (suggested by several)
- to add control of "ddc-en-gpios" to hdmi-connector driver (by hns@goldelico.com)
- regulator code removed because we now use the "ddc-en-gpios" of the connector
  driver (suggested by paul@crapouillou.net)
- bindings: addition of "ddc-i2c-bus" and "hdmi-5v-supply" removed (suggested by robh+dt@kernel.org)
- rebase on v5.17-rc2

PATCH V11 2021-12-02 19:39:52:
- patch 4/8: change devm_regulator_get_optional to devm_regulator_get and
             remove NULL check (requested by broonie@kernel.org)
- patch 3/8: make hdmi-5v-supply required (requested by broonie@kernel.org)

PATCH V10 2021-11-30 22:26:41:
- patch 3/8: fix $id and $ref paths (found by robh@kernel.org)

PATCH V9 2021-11-24 22:29:14:
- patch 6/8: remove optional <0> for assigned-clocks and unintentionally included "unwedge" setup (found by paul@crapouillou.net)
- patch 4/8: some cosmetics
             make regulator enable/disable only if not NULL (found by paul@crapouillou.net)
             simplify/fix error handling and driver cleanup on remove (proposed by paul@crapouillou.net)
- patch 3/8: fix #include path in example (found by paul@crapouillou.net)
             fix missing "i" in unevaluatedProperties (found by robh@kernel.org)
             fix 4 spaces indentation for required: property (found by robh@kernel.org)

PATCH V8 2021-11-23 19:14:00:
- fix a bad editing result from patch 2/8 (found by paul@crapouillou.net)

PATCH V7 2021-11-23 18:46:23:
- changed gpio polarity of hdmi_power to 0 (suggested by paul@crapouillou.net)
- fixed LCD1 irq number (bug found by paul@crapouillou.net)
- removed "- 4" for calculating max_register (suggested by paul@crapouillou.net)
- use unevaluatedPropertes instead of additionalProperties (suggested by robh@kernel.org)
- moved and renamed ingenic,jz4780-hdmi.yaml (suggested by robh@kernel.org)
- adjusted assigned-clocks changes to upstream which added some for SSI (by hns@goldelico.com)
- rebased and tested with v5.16-rc2 + patch set drm/ingenic by paul@crapouillou.net (by hns@goldelico.com)

PATCH V6 2021-11-10 20:43:33:
- changed CONFIG_DRM_INGENIC_DW_HDMI to "m" (by hns@goldelico.com)
- made ingenic-dw-hdmi an independent platform driver which can be compiled as module
  and removed error patch fixes for IPU (suggested by paul@crapouillou.net)
- moved assigned-clocks from jz4780.dtsi to ci20.dts (suggested by paul@crapouillou.net)
- fixed reg property in jz4780.dtsi to cover all registers incl. gamma and vee (by hns@goldelico.com)
- added a base patch to calculate regmap size from DTS reg property (requested by paul@crapouillou.net)
- restored resetting all bits except one in LCDOSDC (requested by paul@crapouillou.net)
- clarified setting of cpos (suggested by paul@crapouillou.net)
- moved bindings definition for ddc-i2c-bus (suggested by paul@crapouillou.net)
- simplified mask definitions for JZ_LCD_DESSIZE (requested by paul@crapouillou.net)
- removed setting alpha premultiplication (suggested by paul@crapouillou.net)
- removed some comments (suggested by paul@crapouillou.net)

PATCH V5 2021-10-05 14:28:44:
- dropped mode_fixup and timings support in dw-hdmi as it is no longer needed in this V5 (by hns@goldelico.com)
- dropped "drm/ingenic: add some jz4780 specific features" (stimulated by paul@crapouillou.net)
- fixed typo in commit subject: "synopsis" -> "synopsys" (by hns@goldelico.com)
- swapped clocks in jz4780.dtsi to match synopsys,dw-hdmi.yaml (by hns@goldelico.com)
- improved, simplified, fixed, dtbschecked ingenic-jz4780-hdmi.yaml and made dependent of bridge/synopsys,dw-hdmi.yaml (based on suggestions by maxime@cerno.tech)
- fixed binding vs. driver&DTS use of hdmi-5v regulator (suggested by maxime@cerno.tech)
- dropped "drm/bridge: synopsis: Fix to properly handle HPD" - was a no longer needed workaround for a previous version
  (suggested by maxime@cerno.tech)

PATCH V4 2021-09-27 18:44:38:
- fix setting output_port = 1 (issue found by paul@crapouillou.net)
- ci20.dts: convert to use hdmi-connector (by hns@goldelico.com)
- add a hdmi-regulator to control +5V power (by hns@goldelico.com)
- added a fix to dw-hdmi to call drm_kms_helper_hotplug_event on plugin event detection (by hns@goldelico.com)
- always allocate extended descriptor but initialize only for jz4780 (by hns@goldelico.com)
- updated to work on top of "[PATCH v3 0/6] drm/ingenic: Various improvements v3" (by paul@crapouillou.net)
- rebased to v5.13-rc3

PATCH V3 2021-08-08 07:10:50:
This series adds HDMI support for JZ4780 and CI20 board (and fixes one IPU related issue in registration error path)
- [patch 1/8] switched from mode_fixup to atomic_check (suggested by robert.foss@linaro.org)
  - the call to the dw-hdmi specialization is still called mode_fixup
- [patch 3/8] diverse fixes for ingenic-drm-drv (suggested by paul@crapouillou.net)
  - factor out some non-HDMI features of the jz4780 into a separate patch
  - multiple fixes around max height
  - do not change regmap config but a copy on stack
  - define some constants
  - factor out fixing of drm_init error path for IPU into separate patch
  - use FIELD_PREP()
- [patch 8/8] conversion to component framework dropped (suggested by Laurent.pinchart@ideasonboard.com and paul@crapouillou.net)

PATCH V2 2021-08-05 16:08:05:
- code and commit messages revisited for checkpatch warnings
- rebased on v5.14-rc4
- include (failed, hence RFC 8/8) attempt to convert to component framework
  (was suggested by Paul Cercueil <paul@crapouillou.net> a while ago)

This series adds HDMI support for JZ4780 and CI20 board



H. Nikolaus Schaller (5):
  drm/ingenic: prepare ingenic drm for later addition of JZ4780
  drm/synopsys+ingenic: repair hot plug detection
  dw-hdmi/ingenic-dw-hdmi: repair interworking with hdmi-connector
  drm/bridge: display-connector: add ddc-en gpio support
  MIPS: DTS: CI20: fix how ddc power is enabled

Paul Boddie (3):
  drm/ingenic: Add support for JZ4780 and HDMI output
  drm/ingenic: Add dw-hdmi driver specialization for jz4780
  [RFC] drm/ingenic: add some more features specific to jz4780

Sam Ravnborg (1):
  dt-bindings: display: Add ingenic,jz4780-dw-hdmi DT Schema

 .../display/bridge/ingenic,jz4780-hdmi.yaml   |  82 ++++++++++++++
 arch/mips/boot/dts/ingenic/ci20.dts           |  15 +--
 drivers/gpu/drm/bridge/display-connector.c    |  15 +++
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     |  13 ++-
 drivers/gpu/drm/ingenic/Kconfig               |   9 ++
 drivers/gpu/drm/ingenic/Makefile              |   1 +
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c     | 106 +++++++++++++++++-
 drivers/gpu/drm/ingenic/ingenic-drm.h         |  38 +++++++
 drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c     | 106 ++++++++++++++++++
 include/drm/bridge/dw_hdmi.h                  |   1 +
 10 files changed, 367 insertions(+), 19 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml
 create mode 100644 drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c

-- 
2.33.0

[PATCH v13 1/9] drm/ingenic: prepare ingenic drm for later addition of JZ4780

[H. Nikolaus Schaller]

This changes the way the regmap is allocated to prepare for the
later addition of the JZ4780 which has more registers and bits
than the others.

Therefore we make the regmap as big as the reg property in
the device tree tells.

Suggested-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index b4943a56be09b..9c60fc4605e4b 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -173,7 +173,6 @@ static const struct regmap_config ingenic_drm_regmap_config = {
 	.val_bits = 32,
 	.reg_stride = 4,
 
-	.max_register = JZ_REG_LCD_SIZE1,
 	.writeable_reg = ingenic_drm_writeable_reg,
 };
 
@@ -1011,6 +1010,8 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 	struct ingenic_drm_bridge *ib;
 	struct drm_device *drm;
 	void __iomem *base;
+	struct resource *res;
+	struct regmap_config regmap_config;
 	long parent_rate;
 	unsigned int i, clone_mask = 0;
 	int ret, irq;
@@ -1056,14 +1057,16 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 	drm->mode_config.funcs = &ingenic_drm_mode_config_funcs;
 	drm->mode_config.helper_private = &ingenic_drm_mode_config_helpers;
 
-	base = devm_platform_ioremap_resource(pdev, 0);
+	base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(base)) {
 		dev_err(dev, "Failed to get memory resource\n");
 		return PTR_ERR(base);
 	}
 
+	regmap_config = ingenic_drm_regmap_config;
+	regmap_config.max_register = res->end - res->start;
 	priv->map = devm_regmap_init_mmio(dev, base,
-					  &ingenic_drm_regmap_config);
+					  &regmap_config);
 	if (IS_ERR(priv->map)) {
 		dev_err(dev, "Failed to create regmap\n");
 		return PTR_ERR(priv->map);
-- 
2.33.0

[PATCH v13 2/9] drm/ingenic: Add support for JZ4780 and HDMI output

[H. Nikolaus Schaller]

From: Paul Boddie <paul@boddie.org.uk>

Add support for the LCD controller present on JZ4780 SoCs.
This SoC uses 8-byte descriptors which extend the current
4-byte descriptors used for other Ingenic SoCs.

Tested on MIPS Creator CI20 board.

Signed-off-by: Paul Boddie <paul@boddie.org.uk>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 63 ++++++++++++++++++++++-
 drivers/gpu/drm/ingenic/ingenic-drm.h     | 38 ++++++++++++++
 2 files changed, 100 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 9c60fc4605e4b..caa70fdd45466 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -6,6 +6,7 @@
 
 #include "ingenic-drm.h"
 
+#include <linux/bitfield.h>
 #include <linux/component.h>
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
@@ -49,6 +50,11 @@ struct ingenic_dma_hwdesc {
 	u32 addr;
 	u32 id;
 	u32 cmd;
+	/* extended hw descriptor for jz4780 */
+	u32 offsize;
+	u32 pagewidth;
+	u32 cpos;
+	u32 dessize;
 } __aligned(16);
 
 struct ingenic_dma_hwdescs {
@@ -59,7 +65,10 @@ struct ingenic_dma_hwdescs {
 struct jz_soc_info {
 	bool needs_dev_clk;
 	bool has_osd;
+	bool has_alpha;
 	bool map_noncoherent;
+	bool use_extended_hwdesc;
+	bool plane_f0_not_working;
 	unsigned int max_width, max_height;
 	const u32 *formats_f0, *formats_f1;
 	unsigned int num_formats_f0, num_formats_f1;
@@ -446,6 +455,9 @@ static int ingenic_drm_plane_atomic_check(struct drm_plane *plane,
 	if (!crtc)
 		return 0;
 
+	if (priv->soc_info->plane_f0_not_working && plane == &priv->f0)
+		return -EINVAL;
+
 	crtc_state = drm_atomic_get_existing_crtc_state(state,
 							crtc);
 	if (WARN_ON(!crtc_state))
@@ -662,6 +674,33 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane,
 		hwdesc->cmd = JZ_LCD_CMD_EOF_IRQ | (width * height * cpp / 4);
 		hwdesc->next = dma_hwdesc_addr(priv, next_id);
 
+		if (priv->soc_info->use_extended_hwdesc) {
+			hwdesc->cmd |= JZ_LCD_CMD_FRM_ENABLE;
+
+			/* Extended 8-byte descriptor */
+			hwdesc->cpos = 0;
+			hwdesc->offsize = 0;
+			hwdesc->pagewidth = 0;
+
+			switch (newstate->fb->format->format) {
+			case DRM_FORMAT_XRGB1555:
+				hwdesc->cpos |= JZ_LCD_CPOS_RGB555;
+				fallthrough;
+			case DRM_FORMAT_RGB565:
+				hwdesc->cpos |= JZ_LCD_CPOS_BPP_15_16;
+				break;
+			case DRM_FORMAT_XRGB8888:
+				hwdesc->cpos |= JZ_LCD_CPOS_BPP_18_24;
+				break;
+			}
+			hwdesc->cpos |= (JZ_LCD_CPOS_COEFFICIENT_1 <<
+					 JZ_LCD_CPOS_COEFFICIENT_OFFSET);
+			hwdesc->dessize =
+				(0xff << JZ_LCD_DESSIZE_ALPHA_OFFSET) |
+				FIELD_PREP(JZ_LCD_DESSIZE_HEIGHT_MASK, height - 1) |
+				FIELD_PREP(JZ_LCD_DESSIZE_WIDTH_MASK, width - 1);
+		}
+
 		if (drm_atomic_crtc_needs_modeset(crtc_state)) {
 			fourcc = newstate->fb->format->format;
 
@@ -693,6 +732,9 @@ static void ingenic_drm_encoder_atomic_mode_set(struct drm_encoder *encoder,
 		    | JZ_LCD_CFG_SPL_DISABLE | JZ_LCD_CFG_REV_DISABLE;
 	}
 
+	if (priv->soc_info->use_extended_hwdesc)
+		cfg |= JZ_LCD_CFG_DESCRIPTOR_8;
+
 	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
 		cfg |= JZ_LCD_CFG_HSYNC_ACTIVE_LOW;
 	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
@@ -1015,6 +1057,7 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 	long parent_rate;
 	unsigned int i, clone_mask = 0;
 	int ret, irq;
+	u32 osdc = 0;
 
 	soc_info = of_device_get_match_data(dev);
 	if (!soc_info) {
@@ -1272,7 +1315,10 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 
 	/* Enable OSD if available */
 	if (soc_info->has_osd)
-		regmap_write(priv->map, JZ_REG_LCD_OSDC, JZ_LCD_OSDC_OSDEN);
+		osdc |= JZ_LCD_OSDC_OSDEN;
+	if (soc_info->has_alpha)
+		osdc |= JZ_LCD_OSDC_ALPHAEN;
+	regmap_write(priv->map, JZ_REG_LCD_OSDC, osdc);
 
 	mutex_init(&priv->clk_mutex);
 	priv->clock_nb.notifier_call = ingenic_drm_update_pixclk;
@@ -1468,10 +1514,25 @@ static const struct jz_soc_info jz4770_soc_info = {
 	.num_formats_f0 = ARRAY_SIZE(jz4770_formats_f0),
 };
 
+static const struct jz_soc_info jz4780_soc_info = {
+	.needs_dev_clk = true,
+	.has_osd = true,
+	.has_alpha = true,
+	.use_extended_hwdesc = true,
+	.plane_f0_not_working = true,	/* REVISIT */
+	.max_width = 4096,
+	.max_height = 2048,
+	.formats_f1 = jz4770_formats_f1,
+	.num_formats_f1 = ARRAY_SIZE(jz4770_formats_f1),
+	.formats_f0 = jz4770_formats_f0,
+	.num_formats_f0 = ARRAY_SIZE(jz4770_formats_f0),
+};
+
 static const struct of_device_id ingenic_drm_of_match[] = {
 	{ .compatible = "ingenic,jz4740-lcd", .data = &jz4740_soc_info },
 	{ .compatible = "ingenic,jz4725b-lcd", .data = &jz4725b_soc_info },
 	{ .compatible = "ingenic,jz4770-lcd", .data = &jz4770_soc_info },
+	{ .compatible = "ingenic,jz4780-lcd", .data = &jz4780_soc_info },
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, ingenic_drm_of_match);
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.h b/drivers/gpu/drm/ingenic/ingenic-drm.h
index 22654ac1dde1c..cb1d09b625881 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm.h
+++ b/drivers/gpu/drm/ingenic/ingenic-drm.h
@@ -44,8 +44,11 @@
 #define JZ_REG_LCD_XYP1				0x124
 #define JZ_REG_LCD_SIZE0			0x128
 #define JZ_REG_LCD_SIZE1			0x12c
+#define JZ_REG_LCD_PCFG				0x2c0
 
 #define JZ_LCD_CFG_SLCD				BIT(31)
+#define JZ_LCD_CFG_DESCRIPTOR_8			BIT(28)
+#define JZ_LCD_CFG_RECOVER_FIFO_UNDERRUN	BIT(25)
 #define JZ_LCD_CFG_PS_DISABLE			BIT(23)
 #define JZ_LCD_CFG_CLS_DISABLE			BIT(22)
 #define JZ_LCD_CFG_SPL_DISABLE			BIT(21)
@@ -63,6 +66,7 @@
 #define JZ_LCD_CFG_DE_ACTIVE_LOW		BIT(9)
 #define JZ_LCD_CFG_VSYNC_ACTIVE_LOW		BIT(8)
 #define JZ_LCD_CFG_18_BIT			BIT(7)
+#define JZ_LCD_CFG_24_BIT			BIT(6)
 #define JZ_LCD_CFG_PDW				(BIT(5) | BIT(4))
 
 #define JZ_LCD_CFG_MODE_GENERIC_16BIT		0
@@ -132,6 +136,7 @@
 #define JZ_LCD_CMD_SOF_IRQ			BIT(31)
 #define JZ_LCD_CMD_EOF_IRQ			BIT(30)
 #define JZ_LCD_CMD_ENABLE_PAL			BIT(28)
+#define JZ_LCD_CMD_FRM_ENABLE			BIT(26)
 
 #define JZ_LCD_SYNC_MASK			0x3ff
 
@@ -153,6 +158,7 @@
 #define JZ_LCD_RGBC_EVEN_BGR			(0x5 << 0)
 
 #define JZ_LCD_OSDC_OSDEN			BIT(0)
+#define JZ_LCD_OSDC_ALPHAEN			BIT(2)
 #define JZ_LCD_OSDC_F0EN			BIT(3)
 #define JZ_LCD_OSDC_F1EN			BIT(4)
 
@@ -176,6 +182,38 @@
 #define JZ_LCD_SIZE01_WIDTH_LSB			0
 #define JZ_LCD_SIZE01_HEIGHT_LSB		16
 
+#define JZ_LCD_DESSIZE_ALPHA_OFFSET		24
+#define JZ_LCD_DESSIZE_HEIGHT_MASK		GENMASK(23, 12)
+#define JZ_LCD_DESSIZE_WIDTH_MASK		GENMASK(11, 0)
+
+#define JZ_LCD_CPOS_BPP_15_16			(4 << 27)
+#define JZ_LCD_CPOS_BPP_18_24			(5 << 27)
+#define JZ_LCD_CPOS_BPP_30			(7 << 27)
+#define JZ_LCD_CPOS_RGB555			BIT(30)
+#define JZ_LCD_CPOS_PREMULTIPLY_LCD		BIT(26)
+#define JZ_LCD_CPOS_COEFFICIENT_OFFSET		24
+#define JZ_LCD_CPOS_COEFFICIENT_0		0
+#define JZ_LCD_CPOS_COEFFICIENT_1		1
+#define JZ_LCD_CPOS_COEFFICIENT_ALPHA1		2
+#define JZ_LCD_CPOS_COEFFICIENT_1_ALPHA1	3
+
+#define JZ_LCD_RGBC_RGB_PADDING			BIT(15)
+#define JZ_LCD_RGBC_RGB_PADDING_FIRST		BIT(14)
+#define JZ_LCD_RGBC_422				BIT(8)
+#define JZ_LCD_RGBC_RGB_FORMAT_ENABLE		BIT(7)
+
+#define JZ_LCD_PCFG_PRI_MODE			BIT(31)
+#define JZ_LCD_PCFG_HP_BST_4			(0 << 28)
+#define JZ_LCD_PCFG_HP_BST_8			(1 << 28)
+#define JZ_LCD_PCFG_HP_BST_16			(2 << 28)
+#define JZ_LCD_PCFG_HP_BST_32			(3 << 28)
+#define JZ_LCD_PCFG_HP_BST_64			(4 << 28)
+#define JZ_LCD_PCFG_HP_BST_16_CONT		(5 << 28)
+#define JZ_LCD_PCFG_HP_BST_DISABLE		(7 << 28)
+#define JZ_LCD_PCFG_THRESHOLD2_OFFSET		18
+#define JZ_LCD_PCFG_THRESHOLD1_OFFSET		9
+#define JZ_LCD_PCFG_THRESHOLD0_OFFSET		0
+
 struct device;
 struct drm_plane;
 struct drm_plane_state;
-- 
2.33.0

[PATCH v13 3/9] dt-bindings: display: Add ingenic,jz4780-dw-hdmi DT Schema

[H. Nikolaus Schaller]

From: Sam Ravnborg <sam@ravnborg.org>

Add DT bindings for the hdmi driver for the Ingenic JZ4780 SoC.
Based on .txt binding from Zubair Lutfullah Kakakhel

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../display/bridge/ingenic,jz4780-hdmi.yaml   | 82 +++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml b/Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml
new file mode 100644
index 0000000000000..b8219eab4475a
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ingenic,jz4780-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bindings for Ingenic JZ4780 HDMI Transmitter
+
+maintainers:
+  - H. Nikolaus Schaller <hns@goldelico.com>
+
+description: |
+  The HDMI Transmitter in the Ingenic JZ4780 is a Synopsys DesignWare HDMI 1.4
+  TX controller IP with accompanying PHY IP.
+
+allOf:
+  - $ref: synopsys,dw-hdmi.yaml#
+
+properties:
+  compatible:
+    const: ingenic,jz4780-dw-hdmi
+
+  reg-io-width:
+    const: 4
+
+  clocks:
+    maxItems: 2
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Input from LCD controller output.
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Link to the HDMI connector.
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - ports
+  - reg-io-width
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
+
+    hdmi: hdmi@10180000 {
+        compatible = "ingenic,jz4780-dw-hdmi";
+        reg = <0x10180000 0x8000>;
+        reg-io-width = <4>;
+        ddc-i2c-bus = <&i2c4>;
+        interrupt-parent = <&intc>;
+        interrupts = <3>;
+        clocks = <&cgu JZ4780_CLK_AHB0>, <&cgu JZ4780_CLK_HDMI>;
+        clock-names = "iahb", "isfr";
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            hdmi_in: port@0 {
+                reg = <0>;
+                dw_hdmi_in: endpoint {
+                    remote-endpoint = <&jz4780_lcd_out>;
+                };
+            };
+            hdmi_out: port@1 {
+                reg = <1>;
+                dw_hdmi_out: endpoint {
+                    remote-endpoint = <&hdmi_con>;
+                };
+            };
+        };
+    };
+
+...
-- 
2.33.0

[PATCH v13 4/9] drm/ingenic: Add dw-hdmi driver specialization for jz4780

[H. Nikolaus Schaller]

From: Paul Boddie <paul@boddie.org.uk>

A specialisation of the generic Synopsys HDMI driver is employed for
JZ4780 HDMI support. This requires a new driver, plus device tree and
configuration modifications.

Here we add Kconfig DRM_INGENIC_DW_HDMI, Makefile and driver code.

Signed-off-by: Paul Boddie <paul@boddie.org.uk>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/gpu/drm/ingenic/Kconfig           |   9 ++
 drivers/gpu/drm/ingenic/Makefile          |   1 +
 drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c | 104 ++++++++++++++++++++++
 3 files changed, 114 insertions(+)
 create mode 100644 drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c

diff --git a/drivers/gpu/drm/ingenic/Kconfig b/drivers/gpu/drm/ingenic/Kconfig
index 001f59fb06d56..090830bcbde7f 100644
--- a/drivers/gpu/drm/ingenic/Kconfig
+++ b/drivers/gpu/drm/ingenic/Kconfig
@@ -24,4 +24,13 @@ config DRM_INGENIC_IPU
 
 	  The Image Processing Unit (IPU) will appear as a second primary plane.
 
+config DRM_INGENIC_DW_HDMI
+	tristate "Ingenic specific support for Synopsys DW HDMI"
+	depends on MACH_JZ4780
+	select DRM_DW_HDMI
+	help
+	  Choose this option to enable Synopsys DesignWare HDMI based driver.
+	  If you want to enable HDMI on Ingenic JZ4780 based SoC, you should
+	  select this option.
+
 endif
diff --git a/drivers/gpu/drm/ingenic/Makefile b/drivers/gpu/drm/ingenic/Makefile
index d313326bdddbb..f10cc1c5a5f22 100644
--- a/drivers/gpu/drm/ingenic/Makefile
+++ b/drivers/gpu/drm/ingenic/Makefile
@@ -1,3 +1,4 @@
 obj-$(CONFIG_DRM_INGENIC) += ingenic-drm.o
 ingenic-drm-y = ingenic-drm-drv.o
 ingenic-drm-$(CONFIG_DRM_INGENIC_IPU) += ingenic-ipu.o
+obj-$(CONFIG_DRM_INGENIC_DW_HDMI) += ingenic-dw-hdmi.o
diff --git a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
new file mode 100644
index 0000000000000..34e986dd606cf
--- /dev/null
+++ b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2019, 2020 Paul Boddie <paul@boddie.org.uk>
+ *
+ * Derived from dw_hdmi-imx.c with i.MX portions removed.
+ * Probe and remove operations derived from rcar_dw_hdmi.c.
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+
+#include <drm/bridge/dw_hdmi.h>
+#include <drm/drm_of.h>
+#include <drm/drm_print.h>
+
+static const struct dw_hdmi_mpll_config ingenic_mpll_cfg[] = {
+	{ 45250000,  { { 0x01e0, 0x0000 }, { 0x21e1, 0x0000 }, { 0x41e2, 0x0000 } } },
+	{ 92500000,  { { 0x0140, 0x0005 }, { 0x2141, 0x0005 }, { 0x4142, 0x0005 } } },
+	{ 148500000, { { 0x00a0, 0x000a }, { 0x20a1, 0x000a }, { 0x40a2, 0x000a } } },
+	{ 216000000, { { 0x00a0, 0x000a }, { 0x2001, 0x000f }, { 0x4002, 0x000f } } },
+	{ ~0UL,      { { 0x0000, 0x0000 }, { 0x0000, 0x0000 }, { 0x0000, 0x0000 } } }
+};
+
+static const struct dw_hdmi_curr_ctrl ingenic_cur_ctr[] = {
+	/*pixelclk     bpp8    bpp10   bpp12 */
+	{ 54000000,  { 0x091c, 0x091c, 0x06dc } },
+	{ 58400000,  { 0x091c, 0x06dc, 0x06dc } },
+	{ 72000000,  { 0x06dc, 0x06dc, 0x091c } },
+	{ 74250000,  { 0x06dc, 0x0b5c, 0x091c } },
+	{ 118800000, { 0x091c, 0x091c, 0x06dc } },
+	{ 216000000, { 0x06dc, 0x0b5c, 0x091c } },
+	{ ~0UL,      { 0x0000, 0x0000, 0x0000 } },
+};
+
+/*
+ * Resistance term 133Ohm Cfg
+ * PREEMP config 0.00
+ * TX/CK level 10
+ */
+static const struct dw_hdmi_phy_config ingenic_phy_config[] = {
+	/*pixelclk   symbol   term   vlev */
+	{ 216000000, 0x800d, 0x0005, 0x01ad},
+	{ ~0UL,      0x0000, 0x0000, 0x0000}
+};
+
+static enum drm_mode_status
+ingenic_dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
+			   const struct drm_display_info *info,
+			   const struct drm_display_mode *mode)
+{
+	if (mode->clock < 13500)
+		return MODE_CLOCK_LOW;
+	/* FIXME: Hardware is capable of 270MHz, but setup data is missing. */
+	if (mode->clock > 216000)
+		return MODE_CLOCK_HIGH;
+
+	return MODE_OK;
+}
+
+static struct dw_hdmi_plat_data ingenic_dw_hdmi_plat_data = {
+	.mpll_cfg   = ingenic_mpll_cfg,
+	.cur_ctr    = ingenic_cur_ctr,
+	.phy_config = ingenic_phy_config,
+	.mode_valid = ingenic_dw_hdmi_mode_valid,
+	.output_port	= 1,
+};
+
+static const struct of_device_id ingenic_dw_hdmi_dt_ids[] = {
+	{ .compatible = "ingenic,jz4780-dw-hdmi" },
+	{ /* Sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, ingenic_dw_hdmi_dt_ids);
+
+static void ingenic_dw_hdmi_cleanup(void *data)
+{
+	struct dw_hdmi *hdmi = (struct dw_hdmi *)data;
+
+	dw_hdmi_remove(hdmi);
+}
+
+static int ingenic_dw_hdmi_probe(struct platform_device *pdev)
+{
+	struct dw_hdmi *hdmi;
+
+	hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data);
+	if (IS_ERR(hdmi))
+		return PTR_ERR(hdmi);
+
+	return devm_add_action_or_reset(&pdev->dev, ingenic_dw_hdmi_cleanup, hdmi);
+}
+
+static struct platform_driver ingenic_dw_hdmi_driver = {
+	.probe  = ingenic_dw_hdmi_probe,
+	.driver = {
+		.name = "dw-hdmi-ingenic",
+		.of_match_table = ingenic_dw_hdmi_dt_ids,
+	},
+};
+module_platform_driver(ingenic_dw_hdmi_driver);
+
+MODULE_DESCRIPTION("JZ4780 Specific DW-HDMI Driver Extension");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:dwhdmi-ingenic");
-- 
2.33.0

[PATCH v13 5/9] drm/synopsys+ingenic: repair hot plug detection

[H. Nikolaus Schaller]

so that it calls drm_kms_helper_hotplug_event().

We need to set .poll_enabled but that struct component
can only be accessed in the core code. Hence we add a public
setter function.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 9 +++++++++
 drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c | 2 ++
 include/drm/bridge/dw_hdmi.h              | 1 +
 3 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 54d8fdad395f5..52e7cd2e020d3 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -3216,6 +3216,15 @@ static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi)
 	return 0;
 }
 
+void dw_hdmi_enable_poll(struct dw_hdmi *hdmi, bool enable)
+{
+	if (hdmi->bridge.dev)
+		hdmi->bridge.dev->mode_config.poll_enabled = enable;
+	else
+		dev_warn(hdmi->dev, "no hdmi->bridge.dev");
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_enable_poll);
+
 struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
 			      const struct dw_hdmi_plat_data *plat_data)
 {
diff --git a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
index 34e986dd606cf..90547a28dc5c7 100644
--- a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
+++ b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
@@ -55,6 +55,8 @@ ingenic_dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
 	if (mode->clock > 216000)
 		return MODE_CLOCK_HIGH;
 
+	dw_hdmi_enable_poll(hdmi, true);
+
 	return MODE_OK;
 }
 
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 2a1f85f9a8a3f..963960794b40e 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -196,5 +196,6 @@ enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi,
 void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data,
 			    bool force, bool disabled, bool rxsense);
 void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data);
+void dw_hdmi_enable_poll(struct dw_hdmi *hdmi, bool enable);
 
 #endif /* __IMX_HDMI_H__ */
-- 
2.33.0

[PATCH v13 6/9] dw-hdmi/ingenic-dw-hdmi: repair interworking with hdmi-connector

[H. Nikolaus Schaller]

Commit 7cd70656d1285b ("drm/bridge: display-connector: implement bus fmts callbacks")

introduced a new mechanism to negotiate bus formats between hdmi connector
and the synopsys hdmi driver inside the jz4780.

By this, the dw-hdmi is no longer the only bridge and sets up a list
of formats in dw_hdmi_bridge_atomic_get_output_bus_fmts().

This includes MEDIA_BUS_FMT_UYVY8_1X16 which is chosen for the jz4780 but only
produces a black screen.

This fix is based on the observation that max_bpc = 0 when running this
function while info->bpc = 8. Since the formats checks before this always test
for max_bpc >= info->pbc indirectly my assumption is that we must check it
here as well.

Adding the proposed patch makes the CI20/jz4780 panel work again in
MEDIA_BUS_FMT_RGB888_1X24 mode.

Fixes: 7cd70656d1285b ("drm/bridge: display-connector: implement bus fmts callbacks")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 52e7cd2e020d3..34703a15ee4ff 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2620,10 +2620,10 @@ static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
 		output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
 	}
 
-	if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
+	if (max_bpc >= info->bpc && info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
 		output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
 
-	if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
+	if (max_bpc >= info->bpc && info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
 		output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
 
 	/* Default 8bit RGB fallback */
-- 
2.33.0

[PATCH v13 7/9] drm/bridge: display-connector: add ddc-en gpio support

[H. Nikolaus Schaller]

"hdmi-connector.yaml" bindings defines an optional property
"ddc-en-gpios" for a single gpio to enable DDC operation.

Usually this controls +5V power on the HDMI connector.
This +5V may also be needed for HPD.

This was not reflected in code.

Now, the driver activates the ddc gpio after probe and
deactivates after remove so it is "almost on".

But only if this driver is loaded (and not e.g. blacklisted
as module).

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/gpu/drm/bridge/display-connector.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/bridge/display-connector.c b/drivers/gpu/drm/bridge/display-connector.c
index d24f5b90feabf..e4d52a7e31b71 100644
--- a/drivers/gpu/drm/bridge/display-connector.c
+++ b/drivers/gpu/drm/bridge/display-connector.c
@@ -24,6 +24,7 @@ struct display_connector {
 	int			hpd_irq;
 
 	struct regulator	*dp_pwr;
+	struct gpio_desc	*ddc_en;
 };
 
 static inline struct display_connector *
@@ -345,6 +346,17 @@ static int display_connector_probe(struct platform_device *pdev)
 		}
 	}
 
+	/* enable DDC */
+	if (type == DRM_MODE_CONNECTOR_HDMIA) {
+		conn->ddc_en = devm_gpiod_get_optional(&pdev->dev, "ddc-en",
+						       GPIOD_OUT_HIGH);
+
+		if (IS_ERR(conn->ddc_en)) {
+			dev_err(&pdev->dev, "Couldn't get ddc-en gpio\n");
+			return PTR_ERR(conn->ddc_en);
+		}
+	}
+
 	conn->bridge.funcs = &display_connector_bridge_funcs;
 	conn->bridge.of_node = pdev->dev.of_node;
 
@@ -373,6 +385,9 @@ static int display_connector_remove(struct platform_device *pdev)
 {
 	struct display_connector *conn = platform_get_drvdata(pdev);
 
+	if (conn->ddc_en)
+		gpiod_set_value(conn->ddc_en, 0);
+
 	if (conn->dp_pwr)
 		regulator_disable(conn->dp_pwr);
 
-- 
2.33.0

[PATCH v13 8/9] MIPS: DTS: CI20: fix how ddc power is enabled

[H. Nikolaus Schaller]

Originally we proposed a new hdmi-5v-supply regulator reference
for CI20 device tree but that was superseded by a better idea to use
the already defined "ddc-en-gpios" property of the "hdmi-connector".

Since "MIPS: DTS: CI20: Add DT nodes for HDMI setup" has already
been applied to v5.17-rc1, we add this on top.

Fixes: ae1b8d2c2de9 ("MIPS: DTS: CI20: Add DT nodes for HDMI setup")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 3e336b3dbb109..ab6e3dc0bc1d0 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -83,6 +83,8 @@ hdmi_out: connector {
 		label = "HDMI OUT";
 		type = "a";
 
+		ddc-en-gpios = <&gpa 25 GPIO_ACTIVE_HIGH>;
+
 		port {
 			hdmi_con: endpoint {
 				remote-endpoint = <&dw_hdmi_out>;
@@ -114,17 +116,6 @@ otg_power: fixedregulator@2 {
 		gpio = <&gpf 14 GPIO_ACTIVE_LOW>;
 		enable-active-high;
 	};
-
-	hdmi_power: fixedregulator@3 {
-		compatible = "regulator-fixed";
-
-		regulator-name = "hdmi_power";
-		regulator-min-microvolt = <5000000>;
-		regulator-max-microvolt = <5000000>;
-
-		gpio = <&gpa 25 0>;
-		enable-active-high;
-	};
 };
 
 &ext {
@@ -576,8 +567,6 @@ &hdmi {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pins_hdmi_ddc>;
 
-	hdmi-5v-supply = <&hdmi_power>;
-
 	ports {
 		#address-cells = <1>;
 		#size-cells = <0>;
-- 
2.33.0

Re: [PATCH v13 0/9] MIPS: JZ4780 and CI20 HDMI

[Paul Cercueil]

Hi Nikolaus,

I tried applying patches 1-2, but they don't apply cleanly on top of 
drm-misc/drm-misc-next.

Could you rebase on top of that tree?

Cheers,
-Paul


Le mer., févr. 2 2022 at 17:31:14 +0100, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> PATCH V13 2022-02-02 17:31:22:
> * 7/9: remove call to gpiod_set_value() because of GPIOD_OUT_HIGH (by 
> paul@crapouillou.net)
> * 4/9: replace ".." by "." (by paul@crapouillou.net)
> * 3/9: remove old hdmi-5v-power in the example (by 
> paul@crapouillou.net)
> * 2/9: disable handling of plane f0 only for jz4780 (by 
> paul@crapouillou.net)
> 
> PATCH V12 2022-01-31 13:26:54:
> This version reworks how hdmi ddc power is controlled by connector 
> and not
> by ddc/hdmi bridge driver.
> 
> Also some patches of the previous version of this series have been 
> removed
> since they are already applied to mips-next/linux/next/v5.17-rc1.
> 
> Fixes and changes:
> 
> - repair interworking of dw-hdmi with connector-hdmi (by 
> hns@goldelico.com)
> - fix JZ_REG_LCD_OSDC setup for jz4780 (by hns@goldelico.com and 
> paul@crapouillou.net)
> - adjustments for ci20.dts to use connector gpio for +5v (suggested 
> by several)
> - to add control of "ddc-en-gpios" to hdmi-connector driver (by 
> hns@goldelico.com)
> - regulator code removed because we now use the "ddc-en-gpios" of the 
> connector
>   driver (suggested by paul@crapouillou.net)
> - bindings: addition of "ddc-i2c-bus" and "hdmi-5v-supply" removed 
> (suggested by robh+dt@kernel.org)
> - rebase on v5.17-rc2
> 
> PATCH V11 2021-12-02 19:39:52:
> - patch 4/8: change devm_regulator_get_optional to devm_regulator_get 
> and
>              remove NULL check (requested by broonie@kernel.org)
> - patch 3/8: make hdmi-5v-supply required (requested by 
> broonie@kernel.org)
> 
> PATCH V10 2021-11-30 22:26:41:
> - patch 3/8: fix $id and $ref paths (found by robh@kernel.org)
> 
> PATCH V9 2021-11-24 22:29:14:
> - patch 6/8: remove optional <0> for assigned-clocks and 
> unintentionally included "unwedge" setup (found by 
> paul@crapouillou.net)
> - patch 4/8: some cosmetics
>              make regulator enable/disable only if not NULL (found by 
> paul@crapouillou.net)
>              simplify/fix error handling and driver cleanup on remove 
> (proposed by paul@crapouillou.net)
> - patch 3/8: fix #include path in example (found by 
> paul@crapouillou.net)
>              fix missing "i" in unevaluatedProperties (found by 
> robh@kernel.org)
>              fix 4 spaces indentation for required: property (found 
> by robh@kernel.org)
> 
> PATCH V8 2021-11-23 19:14:00:
> - fix a bad editing result from patch 2/8 (found by 
> paul@crapouillou.net)
> 
> PATCH V7 2021-11-23 18:46:23:
> - changed gpio polarity of hdmi_power to 0 (suggested by 
> paul@crapouillou.net)
> - fixed LCD1 irq number (bug found by paul@crapouillou.net)
> - removed "- 4" for calculating max_register (suggested by 
> paul@crapouillou.net)
> - use unevaluatedPropertes instead of additionalProperties (suggested 
> by robh@kernel.org)
> - moved and renamed ingenic,jz4780-hdmi.yaml (suggested by 
> robh@kernel.org)
> - adjusted assigned-clocks changes to upstream which added some for 
> SSI (by hns@goldelico.com)
> - rebased and tested with v5.16-rc2 + patch set drm/ingenic by 
> paul@crapouillou.net (by hns@goldelico.com)
> 
> PATCH V6 2021-11-10 20:43:33:
> - changed CONFIG_DRM_INGENIC_DW_HDMI to "m" (by hns@goldelico.com)
> - made ingenic-dw-hdmi an independent platform driver which can be 
> compiled as module
>   and removed error patch fixes for IPU (suggested by 
> paul@crapouillou.net)
> - moved assigned-clocks from jz4780.dtsi to ci20.dts (suggested by 
> paul@crapouillou.net)
> - fixed reg property in jz4780.dtsi to cover all registers incl. 
> gamma and vee (by hns@goldelico.com)
> - added a base patch to calculate regmap size from DTS reg property 
> (requested by paul@crapouillou.net)
> - restored resetting all bits except one in LCDOSDC (requested by 
> paul@crapouillou.net)
> - clarified setting of cpos (suggested by paul@crapouillou.net)
> - moved bindings definition for ddc-i2c-bus (suggested by 
> paul@crapouillou.net)
> - simplified mask definitions for JZ_LCD_DESSIZE (requested by 
> paul@crapouillou.net)
> - removed setting alpha premultiplication (suggested by 
> paul@crapouillou.net)
> - removed some comments (suggested by paul@crapouillou.net)
> 
> PATCH V5 2021-10-05 14:28:44:
> - dropped mode_fixup and timings support in dw-hdmi as it is no 
> longer needed in this V5 (by hns@goldelico.com)
> - dropped "drm/ingenic: add some jz4780 specific features" 
> (stimulated by paul@crapouillou.net)
> - fixed typo in commit subject: "synopsis" -> "synopsys" (by 
> hns@goldelico.com)
> - swapped clocks in jz4780.dtsi to match synopsys,dw-hdmi.yaml (by 
> hns@goldelico.com)
> - improved, simplified, fixed, dtbschecked ingenic-jz4780-hdmi.yaml 
> and made dependent of bridge/synopsys,dw-hdmi.yaml (based on 
> suggestions by maxime@cerno.tech)
> - fixed binding vs. driver&DTS use of hdmi-5v regulator (suggested by 
> maxime@cerno.tech)
> - dropped "drm/bridge: synopsis: Fix to properly handle HPD" - was a 
> no longer needed workaround for a previous version
>   (suggested by maxime@cerno.tech)
> 
> PATCH V4 2021-09-27 18:44:38:
> - fix setting output_port = 1 (issue found by paul@crapouillou.net)
> - ci20.dts: convert to use hdmi-connector (by hns@goldelico.com)
> - add a hdmi-regulator to control +5V power (by hns@goldelico.com)
> - added a fix to dw-hdmi to call drm_kms_helper_hotplug_event on 
> plugin event detection (by hns@goldelico.com)
> - always allocate extended descriptor but initialize only for jz4780 
> (by hns@goldelico.com)
> - updated to work on top of "[PATCH v3 0/6] drm/ingenic: Various 
> improvements v3" (by paul@crapouillou.net)
> - rebased to v5.13-rc3
> 
> PATCH V3 2021-08-08 07:10:50:
> This series adds HDMI support for JZ4780 and CI20 board (and fixes 
> one IPU related issue in registration error path)
> - [patch 1/8] switched from mode_fixup to atomic_check (suggested by 
> robert.foss@linaro.org)
>   - the call to the dw-hdmi specialization is still called mode_fixup
> - [patch 3/8] diverse fixes for ingenic-drm-drv (suggested by 
> paul@crapouillou.net)
>   - factor out some non-HDMI features of the jz4780 into a separate 
> patch
>   - multiple fixes around max height
>   - do not change regmap config but a copy on stack
>   - define some constants
>   - factor out fixing of drm_init error path for IPU into separate 
> patch
>   - use FIELD_PREP()
> - [patch 8/8] conversion to component framework dropped (suggested by 
> Laurent.pinchart@ideasonboard.com and paul@crapouillou.net)
> 
> PATCH V2 2021-08-05 16:08:05:
> - code and commit messages revisited for checkpatch warnings
> - rebased on v5.14-rc4
> - include (failed, hence RFC 8/8) attempt to convert to component 
> framework
>   (was suggested by Paul Cercueil <paul@crapouillou.net> a while ago)
> 
> This series adds HDMI support for JZ4780 and CI20 board
> 
> 
> 
> H. Nikolaus Schaller (5):
>   drm/ingenic: prepare ingenic drm for later addition of JZ4780
>   drm/synopsys+ingenic: repair hot plug detection
>   dw-hdmi/ingenic-dw-hdmi: repair interworking with hdmi-connector
>   drm/bridge: display-connector: add ddc-en gpio support
>   MIPS: DTS: CI20: fix how ddc power is enabled
> 
> Paul Boddie (3):
>   drm/ingenic: Add support for JZ4780 and HDMI output
>   drm/ingenic: Add dw-hdmi driver specialization for jz4780
>   [RFC] drm/ingenic: add some more features specific to jz4780
> 
> Sam Ravnborg (1):
>   dt-bindings: display: Add ingenic,jz4780-dw-hdmi DT Schema
> 
>  .../display/bridge/ingenic,jz4780-hdmi.yaml   |  82 ++++++++++++++
>  arch/mips/boot/dts/ingenic/ci20.dts           |  15 +--
>  drivers/gpu/drm/bridge/display-connector.c    |  15 +++
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     |  13 ++-
>  drivers/gpu/drm/ingenic/Kconfig               |   9 ++
>  drivers/gpu/drm/ingenic/Makefile              |   1 +
>  drivers/gpu/drm/ingenic/ingenic-drm-drv.c     | 106 
> +++++++++++++++++-
>  drivers/gpu/drm/ingenic/ingenic-drm.h         |  38 +++++++
>  drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c     | 106 
> ++++++++++++++++++
>  include/drm/bridge/dw_hdmi.h                  |   1 +
>  10 files changed, 367 insertions(+), 19 deletions(-)
>  create mode 100644 
> Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml
>  create mode 100644 drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
> 
> --
> 2.33.0
> 

Re: [PATCH v13 5/9] drm/synopsys+ingenic: repair hot plug detection

[Paul Cercueil]

Hi Nikolaus,

Le mer., févr. 2 2022 at 17:31:19 +0100, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> so that it calls drm_kms_helper_hotplug_event().
> 
> We need to set .poll_enabled but that struct component
> can only be accessed in the core code. Hence we add a public
> setter function.
> 
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> ---
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 9 +++++++++
>  drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c | 2 ++
>  include/drm/bridge/dw_hdmi.h              | 1 +
>  3 files changed, 12 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c 
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 54d8fdad395f5..52e7cd2e020d3 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -3216,6 +3216,15 @@ static int dw_hdmi_parse_dt(struct dw_hdmi 
> *hdmi)
>  	return 0;
>  }
> 
> +void dw_hdmi_enable_poll(struct dw_hdmi *hdmi, bool enable)
> +{
> +	if (hdmi->bridge.dev)
> +		hdmi->bridge.dev->mode_config.poll_enabled = enable;
> +	else
> +		dev_warn(hdmi->dev, "no hdmi->bridge.dev");
> +}
> +EXPORT_SYMBOL_GPL(dw_hdmi_enable_poll);
> +
>  struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
>  			      const struct dw_hdmi_plat_data *plat_data)
>  {
> diff --git a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c 
> b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
> index 34e986dd606cf..90547a28dc5c7 100644
> --- a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
> +++ b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
> @@ -55,6 +55,8 @@ ingenic_dw_hdmi_mode_valid(struct dw_hdmi *hdmi, 
> void *data,
>  	if (mode->clock > 216000)
>  		return MODE_CLOCK_HIGH;
> 
> +	dw_hdmi_enable_poll(hdmi, true);
> +

It would be a better idea to move this patch before the patch that 
creates ingenic-dw-hdmi.c. Then you wouldn't have to patch a file that 
was just introduced.

As for the patch itself, I guess it's fine, but is that really needed? 
My understanding is that it's the hdmi-connector's job to poll.

Cheers,
-Paul

>  	return MODE_OK;
>  }
> 
> diff --git a/include/drm/bridge/dw_hdmi.h 
> b/include/drm/bridge/dw_hdmi.h
> index 2a1f85f9a8a3f..963960794b40e 100644
> --- a/include/drm/bridge/dw_hdmi.h
> +++ b/include/drm/bridge/dw_hdmi.h
> @@ -196,5 +196,6 @@ enum drm_connector_status 
> dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi,
>  void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data,
>  			    bool force, bool disabled, bool rxsense);
>  void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data);
> +void dw_hdmi_enable_poll(struct dw_hdmi *hdmi, bool enable);
> 
>  #endif /* __IMX_HDMI_H__ */
> --
> 2.33.0
> 

Re: [PATCH v13 6/9] dw-hdmi/ingenic-dw-hdmi: repair interworking with hdmi-connector

[Paul Cercueil]

Hi Nikolaus,

Le mer., févr. 2 2022 at 17:31:20 +0100, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> Commit 7cd70656d1285b ("drm/bridge: display-connector: implement bus 
> fmts callbacks")
> 
> introduced a new mechanism to negotiate bus formats between hdmi 
> connector
> and the synopsys hdmi driver inside the jz4780.
> 
> By this, the dw-hdmi is no longer the only bridge and sets up a list
> of formats in dw_hdmi_bridge_atomic_get_output_bus_fmts().
> 
> This includes MEDIA_BUS_FMT_UYVY8_1X16 which is chosen for the jz4780 
> but only
> produces a black screen.
> 
> This fix is based on the observation that max_bpc = 0 when running 
> this
> function while info->bpc = 8. Since the formats checks before this 
> always test
> for max_bpc >= info->pbc indirectly my assumption is that we must 
> check it
> here as well.

This fix looks really strange to me, so I'll let the DRM experts 
comment.

It would still be better to move the patch before the introduction of 
dw-ingenic-hdmi.c, so that once this one is introduced, everything 
works. This also enables bisectability.

Cheers,
-Paul


> 
> Adding the proposed patch makes the CI20/jz4780 panel work again in
> MEDIA_BUS_FMT_RGB888_1X24 mode.
> 
> Fixes: 7cd70656d1285b ("drm/bridge: display-connector: implement bus 
> fmts callbacks")
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> ---
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c 
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 52e7cd2e020d3..34703a15ee4ff 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -2620,10 +2620,10 @@ static u32 
> *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
>  		output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
>  	}
> 
> -	if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
> +	if (max_bpc >= info->bpc && info->color_formats & 
> DRM_COLOR_FORMAT_YCRCB422)
>  		output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
> 
> -	if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
> +	if (max_bpc >= info->bpc && info->color_formats & 
> DRM_COLOR_FORMAT_YCRCB444)
>  		output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
> 
>  	/* Default 8bit RGB fallback */
> --
> 2.33.0
> 

Re: [PATCH v13 8/9] MIPS: DTS: CI20: fix how ddc power is enabled

[Thomas Bogendoerfer]

On Wed, Feb 02, 2022 at 05:31:22PM +0100, H. Nikolaus Schaller wrote:
> Originally we proposed a new hdmi-5v-supply regulator reference
> for CI20 device tree but that was superseded by a better idea to use
> the already defined "ddc-en-gpios" property of the "hdmi-connector".
> 
> Since "MIPS: DTS: CI20: Add DT nodes for HDMI setup" has already
> been applied to v5.17-rc1, we add this on top.
> 
> Fixes: ae1b8d2c2de9 ("MIPS: DTS: CI20: Add DT nodes for HDMI setup")
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> Reviewed-by: Paul Cercueil <paul@crapouillou.net>
> ---
>  arch/mips/boot/dts/ingenic/ci20.dts | 15 ++-------------
>  1 file changed, 2 insertions(+), 13 deletions(-)

applied to mips-fixes.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]

Re: [PATCH v13 0/9] MIPS: JZ4780 and CI20 HDMI

[H. Nikolaus Schaller]

Paul,

> Am 09.02.2022 um 12:52 schrieb Paul Cercueil <paul@crapouillou.net>:
> 
> Hi Nikolaus,
> 
> I tried applying patches 1-2, but they don't apply cleanly on top of drm-misc/drm-misc-next.

Ok I had rebased to linux-next some days ago and it appears that patch 1/9 has now arrived in drm-misc/drm-misc-next.
So we can drop 1/9.

> 
> Could you rebase on top of that tree?

Sure.

Unfortunatley my v14 breaks the display again. It is not much fun to develop on top of such a moving target...
So I have to find out first what was broken this time before I can send out a new version.

BR,
Nikolaus

Re: [PATCH v13 5/9] drm/synopsys+ingenic: repair hot plug detection

[H. Nikolaus Schaller]

Hi Paul,

> Am 09.02.2022 um 13:01 schrieb Paul Cercueil <paul@crapouillou.net>:
> 
> Hi Nikolaus,
> 
> Le mer., févr. 2 2022 at 17:31:19 +0100, H. Nikolaus Schaller <hns@goldelico.com> a écrit :
>> so that it calls drm_kms_helper_hotplug_event().
>> We need to set .poll_enabled but that struct component
>> can only be accessed in the core code. Hence we add a public
>> setter function.
>> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
>> ---
>> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 9 +++++++++
>> drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c | 2 ++
>> include/drm/bridge/dw_hdmi.h              | 1 +
>> 3 files changed, 12 insertions(+)
>> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
>> index 54d8fdad395f5..52e7cd2e020d3 100644
>> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
>> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
>> @@ -3216,6 +3216,15 @@ static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi)
>> 	return 0;
>> }
>> +void dw_hdmi_enable_poll(struct dw_hdmi *hdmi, bool enable)
>> +{
>> +	if (hdmi->bridge.dev)
>> +		hdmi->bridge.dev->mode_config.poll_enabled = enable;
>> +	else
>> +		dev_warn(hdmi->dev, "no hdmi->bridge.dev");
>> +}
>> +EXPORT_SYMBOL_GPL(dw_hdmi_enable_poll);
>> +
>> struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
>> 			      const struct dw_hdmi_plat_data *plat_data)
>> {
>> diff --git a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
>> index 34e986dd606cf..90547a28dc5c7 100644
>> --- a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
>> +++ b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c
>> @@ -55,6 +55,8 @@ ingenic_dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
>> 	if (mode->clock > 216000)
>> 		return MODE_CLOCK_HIGH;
>> +	dw_hdmi_enable_poll(hdmi, true);
>> +
> 
> It would be a better idea to move this patch before the patch that creates ingenic-dw-hdmi.c. Then you wouldn't have to patch a file that was just introduced.

The main reason to have a separate patch was that I was not sure what is already merged somewhere and what is not.
And fixing something which is not yet introduced makes it quite difficult to explain, why it is needed at all...

So I would prefer to leave it as is until more comments arrive.

> 
> As for the patch itself, I guess it's fine, but is that really needed? My understanding is that it's the hdmi-connector's job to poll.

The hardware gpio that we can define for the hdmi-connector seems not to be available on all CI20 boards.

Hence we must trigger (enable) the poll logic of the dw-hdmi bridge from the SoC specialization.
This seems to be best done in the ingenic-dw-hdmi driver.

Unless someone has a better idea how the dw-hdmi driver could find out that it should poll if a connector is defined.
The base driver seems as if it has been developed long ago without connectors and bridge chains in mind.
Hence we are retrofitting fixes for changes introduced outside the drivers.

BR,
Nikolaus

Re: [PATCH v13 6/9] dw-hdmi/ingenic-dw-hdmi: repair interworking with hdmi-connector

[H. Nikolaus Schaller]

Hi Paul,

> Am 09.02.2022 um 13:18 schrieb Paul Cercueil <paul@crapouillou.net>:
> 
> Hi Nikolaus,
> 
> Le mer., févr. 2 2022 at 17:31:20 +0100, H. Nikolaus Schaller <hns@goldelico.com> a écrit :
>> Commit 7cd70656d1285b ("drm/bridge: display-connector: implement bus fmts callbacks")
>> introduced a new mechanism to negotiate bus formats between hdmi connector
>> and the synopsys hdmi driver inside the jz4780.
>> By this, the dw-hdmi is no longer the only bridge and sets up a list
>> of formats in dw_hdmi_bridge_atomic_get_output_bus_fmts().
>> This includes MEDIA_BUS_FMT_UYVY8_1X16 which is chosen for the jz4780 but only
>> produces a black screen.
>> This fix is based on the observation that max_bpc = 0 when running this
>> function while info->bpc = 8. Since the formats checks before this always test
>> for max_bpc >= info->pbc indirectly my assumption is that we must check it
>> here as well.
> 
> This fix looks really strange to me, so I'll let the DRM experts comment.

Well, yes. We should maybe look for comments by the synopsys/dw-hdmi specialists.

> 
> It would still be better to move the patch before the introduction of dw-ingenic-hdmi.c, so that once this one is introduced, everything works. This also enables bisectability.

Ok, good.

BR and thanks,
Nikolaus

> 
> Cheers,
> -Paul
> 
> 
>> Adding the proposed patch makes the CI20/jz4780 panel work again in
>> MEDIA_BUS_FMT_RGB888_1X24 mode.
>> Fixes: 7cd70656d1285b ("drm/bridge: display-connector: implement bus fmts callbacks")
>> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
>> ---
>> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
>> index 52e7cd2e020d3..34703a15ee4ff 100644
>> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
>> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
>> @@ -2620,10 +2620,10 @@ static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
>> 		output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
>> 	}
>> -	if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
>> +	if (max_bpc >= info->bpc && info->color_formats & DRM_COLOR_FORMAT_YCRCB422)
>> 		output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
>> -	if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
>> +	if (max_bpc >= info->bpc && info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
>> 		output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
>> 	/* Default 8bit RGB fallback */
>> --
>> 2.33.0
> 
> 

Re: [PATCH v13 0/9] MIPS: JZ4780 and CI20 HDMI

[Paul Cercueil]

Hi,

Le mer., févr. 9 2022 at 14:51:12 +0100, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> Paul,
> 
>>  Am 09.02.2022 um 12:52 schrieb Paul Cercueil <paul@crapouillou.net>:
>> 
>>  Hi Nikolaus,
>> 
>>  I tried applying patches 1-2, but they don't apply cleanly on top 
>> of drm-misc/drm-misc-next.
> 
> Ok I had rebased to linux-next some days ago and it appears that 
> patch 1/9 has now arrived in drm-misc/drm-misc-next.
> So we can drop 1/9.

Yes, some weeks ago I did apply patch 1/9 from one of your previous 
patchsets. Patch 2 was applied as well (commit b807fd2c43fe 
("drm/ingenic: Add support for JZ4780 and HDMI output")), but you then 
said that it didn't work and needed a fix.

For this patchset you should always base on top of 
drm-misc/drm-misc-next, and not on linux-next; they have different 
schedules. You can drop patch #1, and rework patch #2 so that it only 
fixes the previously incorrect behaviour.

> 
>> 
>>  Could you rebase on top of that tree?
> 
> Sure.
> 
> Unfortunatley my v14 breaks the display again. It is not much fun to 
> develop on top of such a moving target...

I can imagine...

Cheers,
-Paul

> So I have to find out first what was broken this time before I can 
> send out a new version.
> 
> BR,
> Nikolaus

Re: [PATCH v13 0/9] MIPS: JZ4780 and CI20 HDMI

[H. Nikolaus Schaller]

Hi,

> Am 09.02.2022 um 15:02 schrieb Paul Cercueil <paul@crapouillou.net>:
> 
> Hi,
> 
> Le mer., févr. 9 2022 at 14:51:12 +0100, H. Nikolaus Schaller <hns@goldelico.com> a écrit :
>> Paul,
>>> Am 09.02.2022 um 12:52 schrieb Paul Cercueil <paul@crapouillou.net>:
>>> Hi Nikolaus,
>>> I tried applying patches 1-2, but they don't apply cleanly on top of drm-misc/drm-misc-next.
>> Ok I had rebased to linux-next some days ago and it appears that patch 1/9 has now arrived in drm-misc/drm-misc-next.
>> So we can drop 1/9.
> 
> Yes, some weeks ago I did apply patch 1/9 from one of your previous patchsets. Patch 2 was applied as well (commit b807fd2c43fe ("drm/ingenic: Add support for JZ4780 and HDMI output")), but you then said that it didn't work and needed a fix.
> 
> For this patchset you should always base on top of drm-misc/drm-misc-next, and not on linux-next; they have different schedules. You can drop patch #1, and rework patch #2 so that it only fixes the previously incorrect behaviour.
> 
>>> Could you rebase on top of that tree?
>> Sure.
>> Unfortunatley my v14 breaks the display again. It is not much fun to develop on top of such a moving target...
> 
> I can imagine...

Have found it. Was a typo in a rebase conflict resolution...

So, v14 can come now.

BR and thanks,
Nikolaus