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gpu/drm: panel: Add Sharp LQ079L1SX01 panel support
This panel requires dual-channel mode. The device accepts video-mode data on 8 lanes and will therefore need a dual-channel DSI controller. The two interfaces that make up this device need to be instantiated in the controllers that gang up to provide the dual-channel DSI host. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20250919153839.236241-3-clamor95@gmail.com
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‎drivers/gpu/drm/panel/Kconfig‎

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@@ -888,6 +888,21 @@ config DRM_PANEL_SEIKO_43WVF1G
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Say Y here if you want to enable support for the Seiko
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43WVF1G controller for 800x480 LCD panels
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config DRM_PANEL_SHARP_LQ079L1SX01
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tristate "Sharp LQ079L1SX01 panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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select VIDEOMODE_HELPERS
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help
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Say Y here if you want to enable support for Sharp LQ079L1SX01
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TFT-LCD modules. The panel has a 2560x1600 resolution and uses
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24 bit RGB per pixel. It provides a dual MIPI DSI interface to
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the host.
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To compile this driver as a module, choose M here: the module
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will be called panel-sharp-lq079l1sx01.
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config DRM_PANEL_SHARP_LQ101R1SX01
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tristate "Sharp LQ101R1SX01 panel"
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depends on OF

‎drivers/gpu/drm/panel/Makefile‎

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@@ -91,6 +91,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA5X01_AMS561RA01) += panel-samsung-s6e8aa5x01-ams561ra01.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_SOFEF00) += panel-samsung-sofef00.o
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obj-$(CONFIG_DRM_PANEL_SEIKO_43WVF1G) += panel-seiko-43wvf1g.o
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obj-$(CONFIG_DRM_PANEL_SHARP_LQ079L1SX01) += panel-sharp-lq079l1sx01.o
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obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
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obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
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obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o

‎drivers/gpu/drm/panel/panel-sharp-lq079l1sx01.c‎

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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2016 XiaoMi, Inc.
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* Copyright (c) 2024 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_graph.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.h>
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#include <drm/drm_connector.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_device.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_probe_helper.h>
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static const struct regulator_bulk_data sharp_supplies[] = {
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{ .supply = "avdd" }, { .supply = "vddio" },
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{ .supply = "vsp" }, { .supply = "vsn" },
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};
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struct sharp_panel {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi[2];
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struct gpio_desc *reset_gpio;
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struct regulator_bulk_data *supplies;
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const struct drm_display_mode *mode;
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};
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static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct sharp_panel, panel);
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}
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static void sharp_panel_reset(struct sharp_panel *sharp)
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{
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gpiod_set_value_cansleep(sharp->reset_gpio, 1);
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usleep_range(2000, 3000);
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gpiod_set_value_cansleep(sharp->reset_gpio, 0);
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usleep_range(2000, 3000);
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}
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static int sharp_panel_prepare(struct drm_panel *panel)
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{
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struct sharp_panel *sharp = to_sharp_panel(panel);
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struct device *dev = panel->dev;
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struct mipi_dsi_device *dsi0 = sharp->dsi[0];
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struct mipi_dsi_device *dsi1 = sharp->dsi[1];
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL };
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int ret;
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ret = regulator_bulk_enable(ARRAY_SIZE(sharp_supplies), sharp->supplies);
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if (ret) {
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dev_err(dev, "error enabling regulators (%d)\n", ret);
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return ret;
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}
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msleep(24);
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if (sharp->reset_gpio)
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sharp_panel_reset(sharp);
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msleep(32);
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mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_EXIT_SLEEP_MODE);
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mipi_dsi_msleep(&dsi_ctx, 120);
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mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,
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MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0xff);
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mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,
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MIPI_DCS_WRITE_POWER_SAVE, 0x01);
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mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,
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MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x2c);
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mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_ON);
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return 0;
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}
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static int sharp_panel_unprepare(struct drm_panel *panel)
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{
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struct sharp_panel *sharp = to_sharp_panel(panel);
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struct mipi_dsi_device *dsi0 = sharp->dsi[0];
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struct mipi_dsi_device *dsi1 = sharp->dsi[1];
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL };
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mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_OFF);
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mipi_dsi_msleep(&dsi_ctx, 100);
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mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_ENTER_SLEEP_MODE);
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mipi_dsi_msleep(&dsi_ctx, 150);
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if (sharp->reset_gpio)
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gpiod_set_value_cansleep(sharp->reset_gpio, 1);
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return regulator_bulk_disable(ARRAY_SIZE(sharp_supplies), sharp->supplies);
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}
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static const struct drm_display_mode default_mode = {
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.clock = (1536 + 136 + 28 + 28) * (2048 + 14 + 8 + 2) * 60 / 1000,
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.hdisplay = 1536,
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.hsync_start = 1536 + 136,
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.hsync_end = 1536 + 136 + 28,
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.htotal = 1536 + 136 + 28 + 28,
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.vdisplay = 2048,
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.vsync_start = 2048 + 14,
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.vsync_end = 2048 + 14 + 8,
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.vtotal = 2048 + 14 + 8 + 2,
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.width_mm = 120,
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.height_mm = 160,
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.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
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};
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static int sharp_panel_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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return drm_connector_helper_get_modes_fixed(connector, &default_mode);
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}
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static const struct drm_panel_funcs sharp_panel_funcs = {
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.unprepare = sharp_panel_unprepare,
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.prepare = sharp_panel_prepare,
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.get_modes = sharp_panel_get_modes,
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};
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static int sharp_panel_probe(struct mipi_dsi_device *dsi)
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{
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const struct mipi_dsi_device_info info = { "sharp-link1", 0, NULL };
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struct device *dev = &dsi->dev;
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struct device_node *dsi_r;
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struct mipi_dsi_host *dsi_r_host;
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struct sharp_panel *sharp;
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int i, ret;
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sharp = devm_drm_panel_alloc(dev, struct sharp_panel, panel,
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&sharp_panel_funcs, DRM_MODE_CONNECTOR_DSI);
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if (IS_ERR(sharp))
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return PTR_ERR(sharp);
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ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(sharp_supplies),
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sharp_supplies, &sharp->supplies);
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if (ret)
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return dev_err_probe(dev, ret, "failed to get supplies\n");
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sharp->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(sharp->reset_gpio))
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return dev_err_probe(dev, PTR_ERR(sharp->reset_gpio),
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"failed to get reset GPIO\n");
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/* Panel is always connected to two DSI hosts, DSI0 is left, DSI1 is right */
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dsi_r = of_graph_get_remote_node(dsi->dev.of_node, 1, -1);
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if (!dsi_r)
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return dev_err_probe(dev, -ENODEV, "failed to find second DSI host node\n");
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dsi_r_host = of_find_mipi_dsi_host_by_node(dsi_r);
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of_node_put(dsi_r);
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if (!dsi_r_host)
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return dev_err_probe(dev, -EPROBE_DEFER, "cannot get secondary DSI host\n");
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sharp->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi_r_host, &info);
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if (IS_ERR(sharp->dsi[1]))
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return dev_err_probe(dev, PTR_ERR(sharp->dsi[1]),
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"second link registration failed\n");
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sharp->dsi[0] = dsi;
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mipi_dsi_set_drvdata(dsi, sharp);
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ret = drm_panel_of_backlight(&sharp->panel);
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if (ret)
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return dev_err_probe(dev, ret, "Failed to get backlight\n");
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drm_panel_add(&sharp->panel);
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for (i = 0; i < ARRAY_SIZE(sharp->dsi); i++) {
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if (!sharp->dsi[i])
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continue;
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sharp->dsi[i]->lanes = 4;
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sharp->dsi[i]->format = MIPI_DSI_FMT_RGB888;
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sharp->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM;
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ret = devm_mipi_dsi_attach(dev, sharp->dsi[i]);
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if (ret < 0) {
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drm_panel_remove(&sharp->panel);
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return dev_err_probe(dev, ret, "failed to attach to DSI%d\n", i);
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}
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}
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return 0;
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}
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static void sharp_panel_remove(struct mipi_dsi_device *dsi)
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{
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struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
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drm_panel_remove(&sharp->panel);
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}
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static const struct of_device_id sharp_of_match[] = {
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{ .compatible = "sharp,lq079l1sx01" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, sharp_of_match);
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static struct mipi_dsi_driver sharp_panel_driver = {
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.driver = {
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.name = "panel-sharp-lq079l1sx01",
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.of_match_table = sharp_of_match,
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},
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.probe = sharp_panel_probe,
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.remove = sharp_panel_remove,
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};
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module_mipi_dsi_driver(sharp_panel_driver);
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MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
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MODULE_DESCRIPTION("Sharp LQ079L1SX01 panel driver");
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MODULE_LICENSE("GPL");

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