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From:   Konrad Dybcio <konrad.dybcio@somainline.org>
To:     ~postmarketos/upstreaming@lists.sr.ht
Cc:     martin.botka@somainline.org,
        angelogioacchino.delregno@somainline.org,
        marijn.suijten@somainline.org, jamipkettunen@somainline.org,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        Thierry Reding <thierry.reding@gmail.com>,
        Sam Ravnborg <sam@ravnborg.org>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>, linux-kernel@vger.kernel.org,
        dri-devel@lists.freedesktop.org
Subject: [PATCH v2 2/2] gpu/drm/panel: Add Sony TD4353 JDI panel driver
Date:   Thu, 22 Sep 2022 15:59:00 +0200
Message-Id: <20220922135902.129760-2-konrad.dybcio@somainline.org>
In-Reply-To: <20220922135902.129760-1-konrad.dybcio@somainline.org>
References: <20220922135902.129760-1-konrad.dybcio@somainline.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Add support for the Sony TD4353 JDI 2160x1080 display panel used in
some Sony Xperia XZ2 and XZ2 Compact smartphones. Due to the specifics
of smartphone manufacturing, it is impossible to retrieve a better name
for this panel.

This revision adds support for the default 60 Hz configuration, however
there could possibly be some room for expansion, as the display panels
used on Sony devices have historically been capable of >2x refresh rate
overclocking.
---
Changes since v1:
- introduce a helper for flipping the reset pins
- make the order of flipping the pins and regulators consistent
(this may cause issues in general, as the panels nowadays are
super duper high tech but it does not seem to have an effect on
these ones)
- remove akari/apollo specific compatibles and default to the
bigger size (adjusted in DT)
- use common mipi_dsi_dcs_write_seq


 drivers/gpu/drm/panel/Kconfig                 |  10 +
 drivers/gpu/drm/panel/Makefile                |   1 +
 drivers/gpu/drm/panel/panel-sony-td4353-jdi.c | 328 ++++++++++++++++++
 3 files changed, 339 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-sony-td4353-jdi.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index a582ddd583c2..6ef1b48169b5 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -637,6 +637,16 @@ config DRM_PANEL_SONY_ACX565AKM
 	  Say Y here if you want to enable support for the Sony ACX565AKM
 	  800x600 3.5" panel (found on the Nokia N900).
 
+config DRM_PANEL_SONY_TD4353_JDI
+	tristate "Sony TD4353 JDI panel"
+	depends on GPIOLIB && OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for the Sony Tama
+	  TD4353 JDI command mode panel as found on some Sony Xperia
+	  XZ2 and XZ2 Compact smartphones.
+
 config DRM_PANEL_SONY_TULIP_TRULY_NT35521
 	tristate "Sony Tulip Truly NT35521 panel"
 	depends on GPIOLIB && OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 8e71aa7581b8..8ef27bc86f94 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -64,6 +64,7 @@ obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
 obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
+obj-$(CONFIG_DRM_PANEL_SONY_TD4353_JDI) += panel-sony-td4353-jdi.o
 obj-$(CONFIG_DRM_PANEL_SONY_TULIP_TRULY_NT35521) += panel-sony-tulip-truly-nt35521.o
 obj-$(CONFIG_DRM_PANEL_TDO_TL070WSH30) += panel-tdo-tl070wsh30.o
 obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
diff --git a/drivers/gpu/drm/panel/panel-sony-td4353-jdi.c b/drivers/gpu/drm/panel/panel-sony-td4353-jdi.c
new file mode 100644
index 000000000000..9e4f48a5126b
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-sony-td4353-jdi.c
@@ -0,0 +1,328 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022 Konrad Dybcio <konrad.dybcio@somainline.org>
+ *
+ * Generated with linux-mdss-dsi-panel-driver-generator with a
+ * substantial amount of manual adjustments.
+ *
+ * SONY Downstream kernel calls this one:
+ * - "JDI ID3" for Akari  (XZ2)
+ * - "JDI ID4" for Apollo (XZ2 Compact)
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+enum {
+	TYPE_TAMA_60HZ,
+	/*
+	 * Leaving room for expansion - SONY very often uses
+	 * *truly reliably* overclockable panels on their flagships!
+	 */
+};
+
+struct sony_td4353_jdi {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+	struct regulator_bulk_data supplies[3];
+	struct gpio_desc *preset_gpio;
+	struct gpio_desc *treset_gpio;
+	bool prepared;
+	int type;
+};
+
+static inline struct sony_td4353_jdi *to_sony_td4353_jdi(struct drm_panel *panel)
+{
+	return container_of(panel, struct sony_td4353_jdi, panel);
+}
+
+static int sony_td4353_jdi_on(struct sony_td4353_jdi *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set column address: %d\n", ret);
+		return ret;
+	}
+
+	ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x086f);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set page address: %d\n", ret);
+		return ret;
+	}
+
+	ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set tear scanline: %d\n", ret);
+		return ret;
+	}
+
+	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set tear on: %d\n", ret);
+		return ret;
+	}
+
+	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
+
+	ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set pixel format: %d\n", ret);
+		return ret;
+	}
+
+	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_PARTIAL_ROWS,
+			  0x00, 0x00, 0x08, 0x6f);
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(70);
+
+	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_MEMORY_START);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to turn display on: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int sony_td4353_jdi_off(struct sony_td4353_jdi *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display off: %d\n", ret);
+		return ret;
+	}
+	msleep(22);
+
+	ret = mipi_dsi_dcs_set_tear_off(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set tear off: %d\n", ret);
+		return ret;
+	}
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(80);
+
+	return 0;
+}
+
+static void sony_td4353_assert_reset_gpios(struct sony_td4353_jdi *ctx, int mode) {
+	gpiod_set_value_cansleep(ctx->treset_gpio, mode);
+	gpiod_set_value_cansleep(ctx->preset_gpio, mode);
+	usleep_range(5000, 5100);
+}
+
+static int sony_td4353_jdi_prepare(struct drm_panel *panel)
+{
+	struct sony_td4353_jdi *ctx = to_sony_td4353_jdi(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enable regulators: %d\n", ret);
+		return ret;
+	}
+
+	msleep(100);
+
+	sony_td4353_assert_reset_gpios(ctx, 1);
+
+	ret = sony_td4353_jdi_on(ctx);
+	if (ret < 0) {
+		dev_err(dev, "Failed to power on panel: %d\n", ret);
+		sony_td4353_assert_reset_gpios(ctx, 0);
+		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+		return ret;
+	}
+
+	ctx->prepared = true;
+	return 0;
+}
+
+static int sony_td4353_jdi_unprepare(struct drm_panel *panel)
+{
+	struct sony_td4353_jdi *ctx = to_sony_td4353_jdi(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (!ctx->prepared)
+		return 0;
+
+	ret = sony_td4353_jdi_off(ctx);
+	if (ret < 0)
+		dev_err(dev, "Failed to power off panel: %d\n", ret);
+
+	sony_td4353_assert_reset_gpios(ctx, 0);
+	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+
+	ctx->prepared = false;
+	return 0;
+}
+
+static const struct drm_display_mode sony_td4353_jdi_mode_tama_60hz = {
+	.clock = (1080 + 4 + 8 + 8) * (2160 + 259 + 8 + 8) * 60 / 1000,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 4,
+	.hsync_end = 1080 + 4 + 8,
+	.htotal = 1080 + 4 + 8 + 8,
+	.vdisplay = 2160,
+	.vsync_start = 2160 + 259,
+	.vsync_end = 2160 + 259 + 8,
+	.vtotal = 2160 + 259 + 8 + 8,
+	.width_mm = 64,
+	.height_mm = 128,
+};
+
+static int sony_td4353_jdi_get_modes(struct drm_panel *panel,
+				   struct drm_connector *connector)
+{
+	struct sony_td4353_jdi *ctx = to_sony_td4353_jdi(panel);
+	struct drm_display_mode *mode = NULL;
+
+	if (ctx->type == TYPE_TAMA_60HZ)
+		mode = drm_mode_duplicate(connector->dev, &sony_td4353_jdi_mode_tama_60hz);
+	else
+		return -EINVAL;
+
+	if (!mode)
+		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 sony_td4353_jdi_panel_funcs = {
+	.prepare = sony_td4353_jdi_prepare,
+	.unprepare = sony_td4353_jdi_unprepare,
+	.get_modes = sony_td4353_jdi_get_modes,
+};
+
+static int sony_td4353_jdi_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct sony_td4353_jdi *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->type = (uintptr_t)of_device_get_match_data(dev);
+
+	ctx->supplies[0].supply = "vddio";
+	ctx->supplies[1].supply = "vsp";
+	ctx->supplies[2].supply = "vsn";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+				      ctx->supplies);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+	ctx->preset_gpio = devm_gpiod_get(dev, "preset", GPIOD_ASIS);
+	if (IS_ERR(ctx->preset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->preset_gpio),
+				     "Failed to get preset-gpios\n");
+
+	ctx->treset_gpio = devm_gpiod_get(dev, "treset", GPIOD_ASIS);
+	if (IS_ERR(ctx->treset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->treset_gpio),
+				     "Failed to get treset-gpios\n");
+
+	ctx->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	drm_panel_init(&ctx->panel, dev, &sony_td4353_jdi_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	ret = drm_panel_of_backlight(&ctx->panel);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get backlight\n");
+
+	drm_panel_add(&ctx->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+		drm_panel_remove(&ctx->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void sony_td4353_jdi_remove(struct mipi_dsi_device *dsi)
+{
+	struct sony_td4353_jdi *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+	drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id sony_td4353_jdi_of_match[] = {
+	{ .compatible = "sony,td4353-jdi-tama", .data = (void *)TYPE_TAMA_60HZ },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sony_td4353_jdi_of_match);
+
+static struct mipi_dsi_driver sony_td4353_jdi_driver = {
+	.probe = sony_td4353_jdi_probe,
+	.remove = sony_td4353_jdi_remove,
+	.driver = {
+		.name = "panel-sony-td4353-jdi",
+		.of_match_table = sony_td4353_jdi_of_match,
+	},
+};
+module_mipi_dsi_driver(sony_td4353_jdi_driver);
+
+MODULE_AUTHOR("Konrad Dybcio <konrad.dybcio@somainline.org>");
+MODULE_DESCRIPTION("DRM panel driver for SONY Xperia XZ2/XZ2c JDI panel");
+MODULE_LICENSE("GPL v2");
-- 
2.37.3