Panel support for PinePhone

16 files changed, 1137 insertions, 0 deletions

diff --git a/Add-support-for-PinePhone-LCD-panel.patch b/Add-support-for-PinePhone-LCD-panel.patch
new file mode 100644
index 000000000..a8cfd239a
--- /dev/null
+++ b/Add-support-for-PinePhone-LCD-panel.patch
@@ -0,0 +1,1121 @@
+From patchwork Mon Mar 16 13:35:00 2020
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+From: Icenowy Zheng <icenowy@aosc.io>
+To: Thierry Reding <thierry.reding@gmail.com>,
+ Sam Ravnborg <sam@ravnborg.org>,
+ Rob Herring <robh+dt@kernel.org>, Maxime Ripard <mripard@kernel.org>,
+ Chen-Yu Tsai <wens@csie.org>, Ondrej Jirman <megous@megous.com>
+Subject: [PATCH v2 2/5] dt-bindings: panel: add binding for Xingbangda XBD599
+ panel
+Date: Mon, 16 Mar 2020 21:35:00 +0800
+Message-Id: <20200316133503.144650-3-icenowy@aosc.io>
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+
+Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI LCD panel.
+
+Add its device tree binding.
+
+Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
+---
+Changes in v2:
+- Example fix.
+- Format fix.
+
+ .../display/panel/xingbangda,xbd599.yaml      | 50 +++++++++++++++++++
+ 1 file changed, 50 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/display/panel/xingbangda,xbd599.yaml
+
+diff --git a/Documentation/devicetree/bindings/display/panel/xingbangda,xbd599.yaml b/Documentation/devicetree/bindings/display/panel/xingbangda,xbd599.yaml
+new file mode 100644
+index 000000000000..b27bcf11198f
+--- /dev/null
++++ b/Documentation/devicetree/bindings/display/panel/xingbangda,xbd599.yaml
+@@ -0,0 +1,50 @@
++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/display/panel/xingbangda,xbd599.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Xingbangda XBD599 5.99in MIPI-DSI LCD panel
++
++maintainers:
++  - Icenowy Zheng <icenowy@aosc.io>
++
++allOf:
++  - $ref: panel-common.yaml#
++
++properties:
++  compatible:
++    const: xingbangda,xbd599
++  reg: true
++  backlight: true
++  reset-gpios: true
++  vcc-supply:
++    description: regulator that supplies the VCC voltage
++  iovcc-supply:
++    description: regulator that supplies the IOVCC voltage
++
++required:
++  - compatible
++  - reg
++  - backlight
++  - vcc-supply
++  - iovcc-supply
++
++additionalProperties: false
++
++examples:
++  - |
++    dsi {
++        #address-cells = <1>;
++        #size-cells = <0>;
++
++        panel@0 {
++            compatible = "xingbangda,xbd599";
++            reg = <0>;
++            backlight = <&backlight>;
++            iovcc-supply = <&reg_dldo2>;
++            vcc-supply = <&reg_ldo_io0>;
++        };
++    };
++
++...
+
+From patchwork Mon Mar 16 13:35:01 2020
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+To: Thierry Reding <thierry.reding@gmail.com>,
+ Sam Ravnborg <sam@ravnborg.org>,
+ Rob Herring <robh+dt@kernel.org>, Maxime Ripard <mripard@kernel.org>,
+ Chen-Yu Tsai <wens@csie.org>, Ondrej Jirman <megous@megous.com>
+Subject: [PATCH v2 3/5] drm: panel: add Xingbangda XBD599 panel
+Date: Mon, 16 Mar 2020 21:35:01 +0800
+Message-Id: <20200316133503.144650-4-icenowy@aosc.io>
+In-Reply-To: <20200316133503.144650-1-icenowy@aosc.io>
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+
+Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI IPS LCD panel made by
+Xingbangda, which is used on PinePhone final assembled phones.
+
+Add support for it.
+
+Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
+---
+Changes in v2:
+- Raised copyright info to 2020.
+- Sort panel operation functions.
+- Sort inclusion.
+
+ drivers/gpu/drm/panel/Kconfig                 |   9 +
+ drivers/gpu/drm/panel/Makefile                |   1 +
+ .../gpu/drm/panel/panel-xingbangda-xbd599.c   | 366 ++++++++++++++++++
+ 3 files changed, 376 insertions(+)
+ create mode 100644 drivers/gpu/drm/panel/panel-xingbangda-xbd599.c
+
+diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
+index a1723c1b5fbf..cf0c59015a44 100644
+--- a/drivers/gpu/drm/panel/Kconfig
++++ b/drivers/gpu/drm/panel/Kconfig
+@@ -433,6 +433,15 @@ config DRM_PANEL_TRULY_NT35597_WQXGA
+ 	  Say Y here if you want to enable support for Truly NT35597 WQXGA Dual DSI
+ 	  Video Mode panel
+ 
++config DRM_PANEL_XINGBANGDA_XBD599
++	tristate "Xingbangda XBD599 panel"
++	depends on OF
++	depends on DRM_MIPI_DSI
++	depends on BACKLIGHT_CLASS_DEVICE
++	help
++	  Say Y here if you want to enable support for the Xingbangda XBD599
++	  MIPI DSI Video Mode panel.
++
+ config DRM_PANEL_XINPENG_XPP055C272
+ 	tristate "Xinpeng XPP055C272 panel driver"
+ 	depends on OF
+diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
+index 96a883cd6630..c84ed5215984 100644
+--- a/drivers/gpu/drm/panel/Makefile
++++ b/drivers/gpu/drm/panel/Makefile
+@@ -46,4 +46,5 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
+ obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
+ obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
+ obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
++obj-$(CONFIG_DRM_PANEL_XINGBANGDA_XBD599) += panel-xingbangda-xbd599.o
+ obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
+diff --git a/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c
+new file mode 100644
+index 000000000000..8d56b6579111
+--- /dev/null
++++ b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c
+@@ -0,0 +1,366 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Xingbangda XBD599 MIPI-DSI panel driver
++ *
++ * Copyright (C) 2019-2020 Icenowy Zheng <icenowy@aosc.io>
++ *
++ * Based on panel-rocktech-jh057n00900.c, which is:
++ *   Copyright (C) Purism SPC 2019
++ */
++
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/mod_devicetable.h>
++#include <linux/module.h>
++#include <linux/of_device.h>
++#include <linux/regulator/consumer.h>
++
++#include <drm/drm_mipi_dsi.h>
++#include <drm/drm_modes.h>
++#include <drm/drm_panel.h>
++#include <drm/drm_print.h>
++
++/* Manufacturer specific Commands send via DSI */
++#define ST7703_CMD_ALL_PIXEL_OFF 0x22
++#define ST7703_CMD_ALL_PIXEL_ON	 0x23
++#define ST7703_CMD_SETDISP	 0xB2
++#define ST7703_CMD_SETRGBIF	 0xB3
++#define ST7703_CMD_SETCYC	 0xB4
++#define ST7703_CMD_SETBGP	 0xB5
++#define ST7703_CMD_SETVCOM	 0xB6
++#define ST7703_CMD_SETOTP	 0xB7
++#define ST7703_CMD_SETPOWER_EXT	 0xB8
++#define ST7703_CMD_SETEXTC	 0xB9
++#define ST7703_CMD_SETMIPI	 0xBA
++#define ST7703_CMD_SETVDC	 0xBC
++#define ST7703_CMD_SETSCR	 0xC0
++#define ST7703_CMD_SETPOWER	 0xC1
++#define ST7703_CMD_UNK_C6	 0xC6
++#define ST7703_CMD_SETPANEL	 0xCC
++#define ST7703_CMD_SETGAMMA	 0xE0
++#define ST7703_CMD_SETEQ	 0xE3
++#define ST7703_CMD_SETGIP1	 0xE9
++#define ST7703_CMD_SETGIP2	 0xEA
++
++static const char * const regulator_names[] = {
++	"iovcc",
++	"vcc",
++};
++
++struct xbd599 {
++	struct device *dev;
++	struct drm_panel panel;
++	struct gpio_desc *reset_gpio;
++	struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)];
++	bool prepared;
++};
++
++static inline struct xbd599 *panel_to_xbd599(struct drm_panel *panel)
++{
++	return container_of(panel, struct xbd599, panel);
++}
++
++#define dsi_dcs_write_seq(dsi, cmd, seq...) do {			\
++		static const u8 d[] = { seq };				\
++		int ret;						\
++		ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d));	\
++		if (ret < 0)						\
++			return ret;					\
++	} while (0)
++
++static int xbd599_init_sequence(struct xbd599 *ctx)
++{
++	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
++	struct device *dev = ctx->dev;
++	int ret;
++
++	/*
++	 * Init sequence was supplied by the panel vendor.
++	 */
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC,
++			  0xF1, 0x12, 0x83);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI,
++			  0x33, 0x81, 0x05, 0xF9, 0x0E, 0x0E, 0x20, 0x00,
++			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25,
++			  0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4F, 0x11,
++			  0x00, 0x00, 0x37);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT,
++			  0x25, 0x22, 0x20, 0x03);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF,
++			  0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00,
++			  0x00, 0x00);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR,
++			  0x73, 0x73, 0x50, 0x50, 0x00, 0xC0, 0x08, 0x70,
++			  0x00);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0xF0);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ,
++			  0x00, 0x00, 0x0B, 0x0B, 0x10, 0x10, 0x00, 0x00,
++			  0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10);
++	dsi_dcs_write_seq(dsi, 0xC6, 0x01, 0x00, 0xFF, 0xFF, 0x00);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER,
++			  0x74, 0x00, 0x32, 0x32, 0x77, 0xF1, 0xFF, 0xFF,
++			  0xCC, 0xCC, 0x77, 0x77);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x07, 0x07);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x2C, 0x2C);
++	dsi_dcs_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00);
++
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1,
++			  0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12,
++			  0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
++			  0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,
++			  0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,
++			  0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,
++			  0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
++			  0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2,
++			  0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++			  0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,
++			  0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,
++			  0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
++			  0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,
++			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
++			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0A,
++			  0xA5, 0x00, 0x00, 0x00, 0x00);
++	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA,
++			  0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35,
++			  0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12,
++			  0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41,
++			  0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12,
++			  0x12, 0x18);
++	msleep(20);
++
++	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
++	if (ret < 0) {
++		DRM_DEV_ERROR(dev, "Failed to exit sleep mode\n");
++		return ret;
++	}
++	msleep(250);
++
++	ret = mipi_dsi_dcs_set_display_on(dsi);
++	if (ret)
++		return ret;
++	msleep(50);
++
++	DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
++	return 0;
++}
++
++static int xbd599_prepare(struct drm_panel *panel)
++{
++	struct xbd599 *ctx = panel_to_xbd599(panel);
++	int ret;
++
++	if (ctx->prepared)
++		return 0;
++
++	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
++	if (ret)
++		return ret;
++
++	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
++	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
++	usleep_range(20, 40);
++	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
++	msleep(20);
++
++	ctx->prepared = true;
++
++	return 0;
++}
++
++static int xbd599_enable(struct drm_panel *panel)
++{
++	struct xbd599 *ctx = panel_to_xbd599(panel);
++	int ret;
++
++	ret = xbd599_init_sequence(ctx);
++	if (ret < 0) {
++		DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
++			      ret);
++		return ret;
++	}
++
++	return 0;
++}
++
++static int xbd599_disable(struct drm_panel *panel)
++{
++	struct xbd599 *ctx = panel_to_xbd599(panel);
++	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
++
++	return mipi_dsi_dcs_set_display_off(dsi);
++}
++
++static int xbd599_unprepare(struct drm_panel *panel)
++{
++	struct xbd599 *ctx = panel_to_xbd599(panel);
++
++	if (!ctx->prepared)
++		return 0;
++
++	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
++	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
++	ctx->prepared = false;
++
++	return 0;
++}
++
++static const struct drm_display_mode xbd599_default_mode = {
++	.hdisplay    = 720,
++	.hsync_start = 720 + 40,
++	.hsync_end   = 720 + 40 + 40,
++	.htotal	     = 720 + 40 + 40 + 40,
++	.vdisplay    = 1440,
++	.vsync_start = 1440 + 18,
++	.vsync_end   = 1440 + 18 + 10,
++	.vtotal	     = 1440 + 18 + 10 + 17,
++	.vrefresh    = 60,
++	.clock	     = 69000,
++	.flags	     = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
++
++	.width_mm    = 68,
++	.height_mm   = 136,
++	.type        = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
++};
++
++static int xbd599_get_modes(struct drm_panel *panel,
++			    struct drm_connector *connector)
++{
++	struct xbd599 *ctx = panel_to_xbd599(panel);
++	struct drm_display_mode *mode;
++
++	mode = drm_mode_duplicate(connector->dev, &xbd599_default_mode);
++	if (!mode) {
++		DRM_DEV_ERROR(ctx->dev, "Failed to add mode\n");
++		return -ENOMEM;
++	}
++
++	drm_mode_set_name(mode);
++
++	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
++	connector->display_info.width_mm = mode->width_mm;
++	connector->display_info.height_mm = mode->height_mm;
++	drm_mode_probed_add(connector, mode);
++
++	return 1;
++}
++
++static const struct drm_panel_funcs xbd599_drm_funcs = {
++	.prepare   = xbd599_prepare,
++	.enable    = xbd599_enable,
++	.disable   = xbd599_disable,
++	.unprepare = xbd599_unprepare,
++	.get_modes = xbd599_get_modes,
++};
++
++static int xbd599_probe(struct mipi_dsi_device *dsi)
++{
++	struct device *dev = &dsi->dev;
++	struct xbd599 *ctx;
++	int i, ret;
++
++	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++
++	for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++)
++		ctx->supplies[i].supply = regulator_names[i];
++
++	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
++				      ctx->supplies);
++	if (ret < 0) {
++		DRM_DEV_ERROR(&dsi->dev, "cannot get regulators\n");
++		return ret;
++	}
++
++	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
++	if (IS_ERR(ctx->reset_gpio)) {
++		DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
++		return PTR_ERR(ctx->reset_gpio);
++	}
++
++	mipi_dsi_set_drvdata(dsi, ctx);
++
++	ctx->dev = dev;
++
++	dsi->lanes = 4;
++	dsi->format = MIPI_DSI_FMT_RGB888;
++	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
++
++	drm_panel_init(&ctx->panel, &dsi->dev, &xbd599_drm_funcs,
++		       DRM_MODE_CONNECTOR_DSI);
++
++	ret = drm_panel_of_backlight(&ctx->panel);
++	if (ret)
++		return ret;
++
++	drm_panel_add(&ctx->panel);
++
++	ret = mipi_dsi_attach(dsi);
++	if (ret < 0) {
++		DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?\n");
++		drm_panel_remove(&ctx->panel);
++		return ret;
++	}
++
++	DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
++		     xbd599_default_mode.hdisplay,
++		     xbd599_default_mode.vdisplay,
++		     xbd599_default_mode.vrefresh,
++		     mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
++
++	return 0;
++}
++
++static void xbd599_shutdown(struct mipi_dsi_device *dsi)
++{
++	struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi);
++	int ret;
++
++	ret = drm_panel_unprepare(&ctx->panel);
++	if (ret < 0)
++		DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
++			      ret);
++}
++
++static int xbd599_remove(struct mipi_dsi_device *dsi)
++{
++	struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi);
++	int ret;
++
++	xbd599_shutdown(dsi);
++
++	ret = mipi_dsi_detach(dsi);
++	if (ret < 0)
++		DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
++			      ret);
++
++	drm_panel_remove(&ctx->panel);
++
++	return 0;
++}
++
++static const struct of_device_id xbd599_of_match[] = {
++	{ .compatible = "xingbangda,xbd599", },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, xbd599_of_match);
++
++static struct mipi_dsi_driver xbd599_driver = {
++	.probe	= xbd599_probe,
++	.remove = xbd599_remove,
++	.shutdown = xbd599_shutdown,
++	.driver = {
++		.name = "panel-xingbangda-xbd599",
++		.of_match_table = xbd599_of_match,
++	},
++};
++module_mipi_dsi_driver(xbd599_driver);
++
++MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");
++MODULE_DESCRIPTION("DRM driver for Xingbangda XBD599 MIPI DSI panel");
++MODULE_LICENSE("GPL v2");
+
+From patchwork Mon Mar 16 13:35:02 2020
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+From: Icenowy Zheng <icenowy@aosc.io>
+To: Thierry Reding <thierry.reding@gmail.com>,
+ Sam Ravnborg <sam@ravnborg.org>,
+ Rob Herring <robh+dt@kernel.org>, Maxime Ripard <mripard@kernel.org>,
+ Chen-Yu Tsai <wens@csie.org>, Ondrej Jirman <megous@megous.com>
+Subject: [PATCH v2 4/5] drm/sun4i: sun6i_mipi_dsi: fix horizontal timing
+ calculation
+Date: Mon, 16 Mar 2020 21:35:02 +0800
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+ <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
+ <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
+Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
+ dri-devel@lists.freedesktop.org, linux-sunxi@googlegroups.com,
+ linux-arm-kernel@lists.infradead.org, Icenowy Zheng <icenowy@aosc.io>
+Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
+Errors-To: 
+ linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
+
+The max() function call in horizontal timing calculation shouldn't pad a
+length already subtracted with overhead to overhead, instead it should
+only prevent the set timing to underflow.
+
+Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
+---
+No changes in v2.
+
+ drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+index 059939789730..5f2313c40328 100644
+--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
++++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+@@ -555,7 +555,7 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi,
+ 		 */
+ #define HSA_PACKET_OVERHEAD	10
+ 		hsa = max((unsigned int)HSA_PACKET_OVERHEAD,
+-			  (mode->hsync_end - mode->hsync_start) * Bpp - HSA_PACKET_OVERHEAD);
++			  (mode->hsync_end - mode->hsync_start) * Bpp) - HSA_PACKET_OVERHEAD;
+ 
+ 		/*
+ 		 * The backporch is set using a blanking packet (4
+@@ -564,7 +564,7 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi,
+ 		 */
+ #define HBP_PACKET_OVERHEAD	6
+ 		hbp = max((unsigned int)HBP_PACKET_OVERHEAD,
+-			  (mode->htotal - mode->hsync_end) * Bpp - HBP_PACKET_OVERHEAD);
++			  (mode->htotal - mode->hsync_end) * Bpp) - HBP_PACKET_OVERHEAD;
+ 
+ 		/*
+ 		 * The frontporch is set using a sync event (4 bytes)
+@@ -574,7 +574,7 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi,
+ 		 */
+ #define HFP_PACKET_OVERHEAD	16
+ 		hfp = max((unsigned int)HFP_PACKET_OVERHEAD,
+-			  (mode->hsync_start - mode->hdisplay) * Bpp - HFP_PACKET_OVERHEAD);
++			  (mode->hsync_start - mode->hdisplay) * Bpp) - HFP_PACKET_OVERHEAD;
+ 
+ 		/*
+ 		 * The blanking is set using a sync event (4 bytes)
+@@ -583,8 +583,8 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi,
+ 		 */
+ #define HBLK_PACKET_OVERHEAD	10
+ 		hblk = max((unsigned int)HBLK_PACKET_OVERHEAD,
+-			   (mode->htotal - (mode->hsync_end - mode->hsync_start)) * Bpp -
+-			   HBLK_PACKET_OVERHEAD);
++			   (mode->htotal - (mode->hsync_end - mode->hsync_start)) * Bpp) -
++			   HBLK_PACKET_OVERHEAD;
+ 
+ 		/*
+ 		 * And I'm not entirely sure what vblk is about. The driver in
+
+From patchwork Mon Mar 16 13:35:03 2020
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+From: Icenowy Zheng <icenowy@aosc.io>
+To: Thierry Reding <thierry.reding@gmail.com>,
+ Sam Ravnborg <sam@ravnborg.org>,
+ Rob Herring <robh+dt@kernel.org>, Maxime Ripard <mripard@kernel.org>,
+ Chen-Yu Tsai <wens@csie.org>, Ondrej Jirman <megous@megous.com>
+Subject: [PATCH v2 5/5] arm64: allwinner: dts: a64: add LCD-related device
+ nodes for PinePhone
+Date: Mon, 16 Mar 2020 21:35:03 +0800
+Message-Id: <20200316133503.144650-6-icenowy@aosc.io>
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+ dri-devel@lists.freedesktop.org, linux-sunxi@googlegroups.com,
+ linux-arm-kernel@lists.infradead.org, Icenowy Zheng <icenowy@aosc.io>
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+
+PinePhone uses PWM backlight and a XBD599 LCD panel over DSI for
+display.
+
+Add its device nodes.
+
+Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
+---
+No changes in v2.
+
+ .../dts/allwinner/sun50i-a64-pinephone.dtsi   | 37 +++++++++++++++++++
+ 1 file changed, 37 insertions(+)
+
+diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+index cefda145c3c9..96d9150423e0 100644
+--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
++++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+@@ -16,6 +16,15 @@ aliases {
+ 		serial0 = &uart0;
+ 	};
+ 
++	backlight: backlight {
++		compatible = "pwm-backlight";
++		pwms = <&r_pwm 0 50000 PWM_POLARITY_INVERTED>;
++		brightness-levels = <0 16 18 20 22 24 26 29 32 35 38 42 46 51 56 62 68 75 83 91 100>;
++		default-brightness-level = <15>;
++		enable-gpios = <&pio 7 10 GPIO_ACTIVE_HIGH>; /* PH10 */
++		power-supply = <&reg_ldo_io0>;
++	};
++
+ 	chosen {
+ 		stdout-path = "serial0:115200n8";
+ 	};
+@@ -84,6 +93,30 @@ &dai {
+ 	status = "okay";
+ };
+ 
++&de {
++	status = "okay";
++};
++
++&dphy {
++	status = "okay";
++};
++
++&dsi {
++	vcc-dsi-supply = <&reg_dldo1>;
++	#address-cells = <1>;
++	#size-cells = <0>;
++	status = "okay";
++
++	panel@0 {
++		compatible = "xingbangda,xbd599";
++		reg = <0>;
++		reset-gpios = <&pio 3 23 GPIO_ACTIVE_LOW>; /* PD23 */
++		iovcc-supply = <&reg_dldo2>;
++		vcc-supply = <&reg_ldo_io0>;
++		backlight = <&backlight>;
++	};
++};
++
+ &ehci0 {
+ 	status = "okay";
+ };
+@@ -188,6 +221,10 @@ &r_pio {
+ 	 */
+ };
+ 
++&r_pwm {
++	status = "okay";
++};
++
+ &r_rsb {
+ 	status = "okay";
+ 
diff --git a/kernel-aarch64-debug-fedora.config b/kernel-aarch64-debug-fedora.config
index 4e98f11ba..517f4ac9c 100644
--- a/kernel-aarch64-debug-fedora.config
+++ b/kernel-aarch64-debug-fedora.config
@@ -1600,6 +1600,7 @@ CONFIG_DRM_PANEL_SITRONIX_ST7701=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 CONFIG_DRM_PANEL_TPO_TPG110=m
 CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA=m
+CONFIG_DRM_PANEL_XINGBANGDA_XBD599=m
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 CONFIG_DRM_PANFROST=m
diff --git a/kernel-aarch64-fedora.config b/kernel-aarch64-fedora.config
index 07ad8269b..a46de2b98 100644
--- a/kernel-aarch64-fedora.config
+++ b/kernel-aarch64-fedora.config
@@ -1592,6 +1592,7 @@ CONFIG_DRM_PANEL_SITRONIX_ST7701=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 CONFIG_DRM_PANEL_TPO_TPG110=m
 CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA=m
+CONFIG_DRM_PANEL_XINGBANGDA_XBD599=m
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 CONFIG_DRM_PANFROST=m
diff --git a/kernel-armv7hl-debug-fedora.config b/kernel-armv7hl-debug-fedora.config
index c66e1133c..b739293ff 100644
--- a/kernel-armv7hl-debug-fedora.config
+++ b/kernel-armv7hl-debug-fedora.config
@@ -1616,6 +1616,7 @@ CONFIG_DRM_PANEL_SITRONIX_ST7701=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 CONFIG_DRM_PANEL_TPO_TPG110=m
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 CONFIG_DRM_PANFROST=m
diff --git a/kernel-armv7hl-fedora.config b/kernel-armv7hl-fedora.config
index 6f058b1dd..3ade340f2 100644
--- a/kernel-armv7hl-fedora.config
+++ b/kernel-armv7hl-fedora.config
@@ -1609,6 +1609,7 @@ CONFIG_DRM_PANEL_SITRONIX_ST7701=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 CONFIG_DRM_PANEL_TPO_TPG110=m
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 CONFIG_DRM_PANFROST=m
diff --git a/kernel-armv7hl-lpae-debug-fedora.config b/kernel-armv7hl-lpae-debug-fedora.config
index e544c48bb..dee41111b 100644
--- a/kernel-armv7hl-lpae-debug-fedora.config
+++ b/kernel-armv7hl-lpae-debug-fedora.config
@@ -1571,6 +1571,7 @@ CONFIG_DRM_PANEL_SITRONIX_ST7701=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 CONFIG_DRM_PANEL_TPO_TPG110=m
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 CONFIG_DRM_PANFROST=m
diff --git a/kernel-armv7hl-lpae-fedora.config b/kernel-armv7hl-lpae-fedora.config
index 226fb50a4..3c7a2ba7a 100644
--- a/kernel-armv7hl-lpae-fedora.config
+++ b/kernel-armv7hl-lpae-fedora.config
@@ -1564,6 +1564,7 @@ CONFIG_DRM_PANEL_SITRONIX_ST7701=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 CONFIG_DRM_PANEL_TPO_TPG110=m
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 CONFIG_DRM_PANFROST=m
diff --git a/kernel-i686-debug-fedora.config b/kernel-i686-debug-fedora.config
index b909e248e..2c0c7ec6a 100644
--- a/kernel-i686-debug-fedora.config
+++ b/kernel-i686-debug-fedora.config
@@ -1335,6 +1335,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel-i686-fedora.config b/kernel-i686-fedora.config
index cae2b33cb..0cf5f785a 100644
--- a/kernel-i686-fedora.config
+++ b/kernel-i686-fedora.config
@@ -1326,6 +1326,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel-ppc64le-debug-fedora.config b/kernel-ppc64le-debug-fedora.config
index 7f0f9e6e5..7488797de 100644
--- a/kernel-ppc64le-debug-fedora.config
+++ b/kernel-ppc64le-debug-fedora.config
@@ -1227,6 +1227,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel-ppc64le-fedora.config b/kernel-ppc64le-fedora.config
index 99c48050a..e59a04250 100644
--- a/kernel-ppc64le-fedora.config
+++ b/kernel-ppc64le-fedora.config
@@ -1218,6 +1218,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel-s390x-debug-fedora.config b/kernel-s390x-debug-fedora.config
index f8c8caebf..675cdacee 100644
--- a/kernel-s390x-debug-fedora.config
+++ b/kernel-s390x-debug-fedora.config
@@ -1233,6 +1233,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel-s390x-fedora.config b/kernel-s390x-fedora.config
index 23c26c31f..251997b4d 100644
--- a/kernel-s390x-fedora.config
+++ b/kernel-s390x-fedora.config
@@ -1224,6 +1224,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel-x86_64-debug-fedora.config b/kernel-x86_64-debug-fedora.config
index 148bd2342..c52f99776 100644
--- a/kernel-x86_64-debug-fedora.config
+++ b/kernel-x86_64-debug-fedora.config
@@ -1373,6 +1373,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel-x86_64-fedora.config b/kernel-x86_64-fedora.config
index 9b1a38246..24121b0e7 100644
--- a/kernel-x86_64-fedora.config
+++ b/kernel-x86_64-fedora.config
@@ -1364,6 +1364,7 @@ CONFIG_DRM_PANEL_SEIKO_43WVF1G=m
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
+# CONFIG_DRM_PANEL_XINGBANGDA_XBD599 is not set
 # CONFIG_DRM_PANEL_XINPENG_XPP055C272 is not set
 CONFIG_DRM_PANEL=y
 # CONFIG_DRM_PARADE_PS8622 is not set
diff --git a/kernel.spec b/kernel.spec
index 43a3eaeae..1ece43077 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -856,6 +856,8 @@ Patch343: Add-LCD-support-for-Pine64-Pinebook-1080p.patch
 Patch344: arm64-pine64-pinetab.patch
 # https://www.spinics.net/lists/arm-kernel/msg789135.html
 Patch345: arm64-pine64-pinephone.patch
+# https://patchwork.kernel.org/cover/11440399/
+Patch346: Add-support-for-PinePhone-LCD-panel.patch
 
 # 400 - IBM (ppc/s390x) patches