// SPDX-License-Identifier: GPL-2.0-only /* * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver. * * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd * * Inki Dae <inki.dae@samsung.com> * Hoegeun Kwon <hoegeun.kwon@samsung.com> #include <linux/backlight.h>#include <linux/delay.h>#include <linux/gpio/consumer.h>#include <linux/mod_devicetable.h>#include <linux/module.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>#define MCS_LEVEL2_KEY 0xf0#define MCS_MTP_KEY 0xf1#define MCS_MTP_SET3 0xd4#define MAX_BRIGHTNESS 100#define DEFAULT_BRIGHTNESS 80#define NUM_GAMMA_STEPS 9#define GAMMA_CMD_CNT 28#define FIRST_COLUMN 20struct s6e63j0x03 {struct device *dev;struct drm_panel panel;struct backlight_device *bl_dev;struct regulator_bulk_data supplies[2];struct gpio_desc *reset_gpio;static const struct drm_display_mode default_mode = {static const unsigned char gamma_tbl[NUM_GAMMA_STEPS][GAMMA_CMD_CNT] = {/* Gamma 10 */ /* gamma 30 */ /* gamma 60 */ /* gamma 90 */ /* gamma 120 */ /* gamma 150 */ /* gamma 200 */ /* gamma 240 */ /* gamma 300 */ static inline struct s6e63j0x03 *panel_to_s6e63j0x03(struct drm_panel *panel)return container_of(panel, struct s6e63j0x03, panel);static inline ssize_t s6e63j0x03_dcs_write_seq(struct s6e63j0x03 *ctx,const void *seq, size_t len)struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);return mipi_dsi_dcs_write_buffer(dsi, seq, len);#define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \static const u8 d[] = { seq }; \static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)return s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)if (on)return s6e63j0x03_dcs_write_seq_static(ctx,return s6e63j0x03_dcs_write_seq_static(ctx, MCS_MTP_KEY, 0xa5, 0xa5);static int s6e63j0x03_power_on(struct s6e63j0x03 *ctx)int ret;if (ret < 0)return ret;return 0;static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);static unsigned int s6e63j0x03_get_brightness_index(unsigned int brightness)unsigned int index;if (index >= NUM_GAMMA_STEPS)return index;static int s6e63j0x03_update_gamma(struct s6e63j0x03 *ctx,unsigned int brightness)struct backlight_device *bl_dev = ctx->bl_dev;unsigned int index = s6e63j0x03_get_brightness_index(brightness);int ret;true );if (ret < 0)return ret;if (ret < 0)return ret;false );if (ret < 0)return ret;return 0;static int s6e63j0x03_set_brightness(struct backlight_device *bl_dev)struct s6e63j0x03 *ctx = bl_get_data(bl_dev);unsigned int brightness = bl_dev->props.brightness;return s6e63j0x03_update_gamma(ctx, brightness);static const struct backlight_ops s6e63j0x03_bl_ops = {static int s6e63j0x03_disable(struct drm_panel *panel)struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);int ret;if (ret < 0)return ret;if (ret < 0)return ret;return 0;static int s6e63j0x03_unprepare(struct drm_panel *panel)struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);int ret;if (ret < 0)return ret;return 0;static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);int ret;if (ret < 0)return ret;true );if (ret < 0)return ret;/* set porch adjustment */ if (ret < 0)return ret;/* set frame freq */ if (ret < 0)return ret;/* set caset, paset */ if (ret < 0)return ret;if (ret < 0)return ret;/* set ltps timming 0, 1 */ if (ret < 0)return ret;if (ret < 0)return ret;/* set param pos te_edge */ if (ret < 0)return ret;/* set te rising edge */ if (ret < 0)return ret;/* set param pos default */ if (ret < 0)return ret;if (ret < 0)return ret;false );if (ret < 0)return ret;return 0;static int s6e63j0x03_prepare(struct drm_panel *panel)struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);int ret;if (ret < 0)return ret;if (ret < 0)goto err;return 0;return ret;static int s6e63j0x03_enable(struct drm_panel *panel)struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);int ret;true );if (ret < 0)return ret;/* set elvss_cond */ if (ret < 0)return ret;/* set pos */ if (ret < 0)return ret;/* set default white brightness */ if (ret < 0)return ret;/* set white ctrl */ if (ret < 0)return ret;/* set acl off */ if (ret < 0)return ret;if (ret < 0)return ret;false );if (ret < 0)return ret;if (ret < 0)return ret;return 0;static int s6e63j0x03_get_modes(struct drm_panel *panel,struct drm_connector *connector)struct drm_display_mode *mode;if (!mode) {"failed to add mode %ux%u@%u\n" ,return -ENOMEM;return 1;static const struct drm_panel_funcs s6e63j0x03_funcs = {static int s6e63j0x03_probe(struct mipi_dsi_device *dsi)struct device *dev = &dsi->dev;struct s6e63j0x03 *ctx;int ret;struct s6e63j0x03, panel,if (IS_ERR(ctx))return PTR_ERR(ctx);"vdd3" ;"vci" ;if (ret < 0)return dev_err_probe(dev, ret, "failed to get regulators\n" );"reset" , GPIOD_OUT_LOW);if (IS_ERR(ctx->reset_gpio))return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),"cannot get reset-gpio\n" );true ;"s6e63j0x03" , dev, ctx,if (IS_ERR(ctx->bl_dev))return dev_err_probe(dev, PTR_ERR(ctx->bl_dev),"failed to register backlight device\n" );if (ret < 0)goto remove_panel;return ret;return ret;static void s6e63j0x03_remove(struct mipi_dsi_device *dsi)struct s6e63j0x03 *ctx = mipi_dsi_get_drvdata(dsi);static const struct of_device_id s6e63j0x03_of_match[] = {"samsung,s6e63j0x03" },static struct mipi_dsi_driver s6e63j0x03_driver = {"panel_samsung_s6e63j0x03" ,"Inki Dae " );"Hoegeun Kwon " );"MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver" );"GPL v2" );
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