diff options
Diffstat (limited to 'drivers/video/display/panel-s6d6aa1.c')
| -rw-r--r-- | drivers/video/display/panel-s6d6aa1.c | 769 |
1 files changed, 769 insertions, 0 deletions
diff --git a/drivers/video/display/panel-s6d6aa1.c b/drivers/video/display/panel-s6d6aa1.c new file mode 100644 index 00000000000..d62def9204a --- /dev/null +++ b/drivers/video/display/panel-s6d6aa1.c @@ -0,0 +1,769 @@ +/* linux/drivers/video/backlight/s6d6aa1.c + * + * MIPI-DSI based s6d6aa1 TFT-LCD 4.77 inch panel driver. + * + * Joongmock Shin <jmock.shin@samsung.com> + * Eunchul Kim <chulspro.kim@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/kernel.h> + +#include <linux/backlight.h> +#include <linux/ctype.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/fb.h> +#include <linux/firmware.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/lcd.h> +#include <linux/mutex.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/wait.h> + +#include <video/display.h> +#include <video/mipi_display.h> +#include <video/of_videomode.h> +#include <video/panel-s6d6aa1.h> + +#define MAX_BRIGHTNESS 69 +#define DSCTL_VFLIP 1 << 7 +#define DSCTL_HFLIP 1 << 6 + +/* white magic mode */ +enum wm_mode { + WM_MODE_MIN = 0x00, + WM_MODE_NORMAL = WM_MODE_MIN, + WM_MODE_CONSERVATIVE, + WM_MODE_MEDIUM, + WM_MODE_AGGRESSIVE, + WM_MODE_OUTDOOR, + WM_MODE_MAX = WM_MODE_OUTDOOR +}; + +struct s6d6aa1 { + struct display_entity entity; + struct device *dev; + + struct s6d6aa1_platform_data *pdata; + struct backlight_device *bd; + struct regulator_bulk_data supplies[2]; + + unsigned int ver; + unsigned int power; + enum wm_mode wm_mode; + + unsigned int reset_gpio; +}; + +#define to_panel(p) container_of(p, struct s6d6aa1, entity) + +static void s6d6aa1_sleep_in(struct s6d6aa1 *lcd) +{ + static const unsigned char data_to_send[] = { + 0x10, 0x00, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_sleep_out(struct s6d6aa1 *lcd) +{ + static const unsigned char data_to_send[] = { + 0x11, 0x00, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_register_access_dis_1(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xF0, 0xA5, 0xA5 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_register_access_dis_2(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xF1, 0xA5, 0xA5 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_apply_level_1_key(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xF0, 0x5A, 0x5A + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_apply_level_2_key(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xF1, 0x5A, 0x5A + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_read_id(struct s6d6aa1 *lcd, u8 *mtp_id) +{ + dsi_dcs_read(lcd->entity.source, 0, + 0xDA, &mtp_id[0], 1); + dsi_dcs_read(lcd->entity.source, 0, + 0xDB, &mtp_id[1], 1); + dsi_dcs_read(lcd->entity.source, 0, + 0xDC, &mtp_id[2], 1); +} + +static void s6d6aa1_write_ddb(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xB4, 0x59, 0x10, 0x10, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_bcm_mode(struct s6d6aa1 *lcd) +{ + static const unsigned char data_to_send[] = { + 0xC1, 0x03, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_wrbl_ctl(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xC3, 0x7C, 0x00, 0x22 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_sony_ip_setting(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send1[] = { + 0xC4, 0x7C, 0xE6, 0x7C, 0xE6, 0x7C, 0xE6, 0x7C, + 0x7C, 0x05, 0x0F, 0x1F, 0x01, 0x00, 0x00, + }; + const unsigned char data_to_send2[] = { + 0xC5, 0x80, 0x80, 0x80, 0x41, 0x43, 0x34, + 0x80, 0x80, 0x01, 0xFF, 0x25, 0x58, 0x50, + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send1, ARRAY_SIZE(data_to_send1)); + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send2, ARRAY_SIZE(data_to_send2)); +} + +static void s6d6aa1_disp_ctl(struct s6d6aa1 *lcd) +{ + static unsigned char data_to_send[3] = { + 0x36, 0x00, 0x00 + }; + + if (lcd->pdata->flip_vertical) + data_to_send[1] |= DSCTL_VFLIP; + + if (lcd->pdata->flip_horizontal) + data_to_send[1] |= DSCTL_HFLIP; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_source_ctl(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xF2, 0x03, 0x03, 0x91, 0x85 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_pwr_ctl(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send[] = { + 0xF4, 0x04, 0x0B, 0x07, 0x07, 0x10, 0x14, 0x0D, 0x0C, + 0xAD, 0x00, 0x33, 0x33 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_panel_ctl(struct s6d6aa1 *lcd, int high_freq) +{ + const unsigned char data_to_send[] = { + 0xF6, 0x0B, 0x11, 0x0F, 0x25, 0x0A, 0x00, 0x13, 0x22, + 0x1B, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x03, + 0x12, 0x32, 0x51 + }; + + /* ToDo : Low requency control */ + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_mount_ctl(struct s6d6aa1 *lcd) +{ + static const unsigned char data_to_send[] = { + 0xF7, 0x00, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static int s6d6aa1_gamma_ctrl(struct s6d6aa1 *lcd) +{ + const unsigned char data_to_send1[] = { + 0xFA, 0x9C, 0xBF, 0x1A, 0xD6, 0xE3, 0xE3, 0x1B, + 0xDA, 0x9B, 0x16, 0x51, 0x12, 0x15, 0xD9, 0x9B, + 0x1A, 0xDD, 0x62, 0x2D, 0x79, 0x6A, 0x2C, 0x7F, + 0x11, 0x09, 0x53, 0x91, 0x09, 0x08, 0xCA, 0x06, + 0x07, 0x89, 0x0D, 0x52, 0xD5, 0x16, 0xD9, 0x1C, + 0x1E, 0x9E, 0xC1, 0x0F, 0xFF, 0xD7, 0x53, 0x61, + 0xE2, 0x5A, 0x9A, 0xDC, 0x5A, 0x97, 0x99, 0x5D, + 0x21, 0xE5, 0x26, 0xE9, 0x2C, 0x2A, 0x2A, 0x4F, + }; + + const unsigned char data_to_send2[] = { + 0xFB, 0x9C, 0xBF, 0x1A, 0xD6, 0xE3, 0xE3, 0x1B, + 0xDA, 0x9B, 0x16, 0x51, 0x12, 0x15, 0xD9, 0x9B, + 0x1A, 0xDD, 0x62, 0x2D, 0x79, 0x6A, 0x2C, 0x7F, + 0x11, 0x09, 0x53, 0x91, 0x09, 0x08, 0xCA, 0x06, + 0x07, 0x89, 0x0D, 0x52, 0xD5, 0x16, 0xD9, 0x1C, + 0x1E, 0x9E, 0xC1, 0x0F, 0xFF, 0xD7, 0x53, 0x61, + 0xE2, 0x5A, 0x9A, 0xDC, 0x5A, 0x97, 0x99, 0x5D, + 0x21, 0xE5, 0x26, 0xE9, 0x2C, 0x2A, 0x2A, 0x4F, + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send1, ARRAY_SIZE(data_to_send1)); + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send2, ARRAY_SIZE(data_to_send2)); + + return 0; +} + +static int s6d6aa1_panel_init(struct s6d6aa1 *lcd) +{ + s6d6aa1_sleep_out(lcd); + + msleep(140); + + s6d6aa1_write_ddb(lcd); + s6d6aa1_bcm_mode(lcd); + s6d6aa1_wrbl_ctl(lcd); + s6d6aa1_sony_ip_setting(lcd); + s6d6aa1_disp_ctl(lcd); + s6d6aa1_source_ctl(lcd); + s6d6aa1_pwr_ctl(lcd); + s6d6aa1_panel_ctl(lcd, 1); + s6d6aa1_mount_ctl(lcd); + + s6d6aa1_gamma_ctrl(lcd); + + return 0; +} + +static void s6d6aa1_write_disbv(struct s6d6aa1 *lcd, + unsigned int brightness) +{ + static unsigned char data_to_send[3] = { + 0x51, 0x00, 0x00 + }; + + data_to_send[1] = brightness; + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_write_ctrld(struct s6d6aa1 *lcd) +{ + static const unsigned char data_to_send[] = { + 0x53, 0x2C, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_write_cabc(struct s6d6aa1 *lcd, + enum wm_mode wm_mode) +{ + static unsigned char data_to_send[3] = { + 0x55, 0x00, 0x00 + }; + + data_to_send[1] = wm_mode; + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_display_on(struct s6d6aa1 *lcd) +{ + static const unsigned char data_to_send[] = { + 0x29, 0x00, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_display_off(struct s6d6aa1 *lcd) +{ + static const unsigned char data_to_send[] = { + 0x28, 0x00, 0x00 + }; + + dsi_dcs_write(lcd->entity.source, 0, + data_to_send, ARRAY_SIZE(data_to_send)); +} + +static void s6d6aa1_brightness_ctrl(struct s6d6aa1 *lcd, + unsigned int brightness) +{ + const unsigned int convert_table[] = { + 8, 9, 11, 13, 15, 17, 19, 21, 23, 25, + 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, + 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, + 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, + 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, + 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, + 127, 130, 133, 136, 139, 142, 145, 149, 152, 155, + 158, 161, 164, 167, 170, 173, 176, 179, 182, 185, + 189, 192, 195, 198, 201, 204, 207, 210, 213, 216, + 219, 222, 225, 228, 232, 235, 238, 241, 244, 247, + 250, + }; + + if (brightness > ARRAY_SIZE(convert_table)-1) + brightness = convert_table[ARRAY_SIZE(convert_table)-1]; + else + brightness = convert_table[brightness]; + + s6d6aa1_write_disbv(lcd, brightness); +} + +static int s6d6aa1_get_brightness(struct backlight_device *bd) +{ + return bd->props.brightness; +} + +static int s6d6aa1_set_brightness(struct backlight_device *bd) +{ + int brightness = bd->props.brightness; + struct s6d6aa1 *lcd = bl_get_data(bd); + enum display_entity_state state; + int ret; + + if (bd->props.power == FB_BLANK_POWERDOWN + || bd->props.state & BL_CORE_SUSPENDED) + state = DISPLAY_ENTITY_STATE_OFF; + else if (bd->props.power != FB_BLANK_UNBLANK) + state = DISPLAY_ENTITY_STATE_STANDBY; + else + state = DISPLAY_ENTITY_STATE_ON; + + if (brightness < 0 || brightness > bd->props.max_brightness) { + dev_err(lcd->dev, + "lcd brightness should be between 0 and %d.\n", + MAX_BRIGHTNESS); + return -EINVAL; + } + + ret = display_entity_set_state(&lcd->entity, state); + if (ret) + return ret; + + if (state == DISPLAY_ENTITY_STATE_OFF) + return 0; + + s6d6aa1_brightness_ctrl(lcd, brightness); + + return 0; +} + +static const struct backlight_ops s6d6aa1_backlight_ops = { + .options = BL_CORE_SUSPENDRESUME, + .get_brightness = s6d6aa1_get_brightness, + .update_status = s6d6aa1_set_brightness, +}; + +static int s6d6aa1_check_mtp(struct s6d6aa1 *lcd) +{ + u8 mtp_id[3] = {0, }; + + s6d6aa1_apply_level_1_key(lcd); + s6d6aa1_apply_level_2_key(lcd); + + s6d6aa1_read_id(lcd, mtp_id); + if (mtp_id[0] == 0x00) { + dev_err(lcd->dev, "read id failed\n"); + return -EIO; + } + + s6d6aa1_register_access_dis_1(lcd); + s6d6aa1_register_access_dis_2(lcd); + + lcd->ver = mtp_id[1]; + dev_info(lcd->dev, "Read ID : 0x%2x, 0x%2x, 0x%2x\n", + mtp_id[0], mtp_id[1], mtp_id[2]); + + return 0; +} + +static void s6d6aa1_set_sequence(struct s6d6aa1 *lcd) +{ + struct backlight_device *bd = lcd->bd; + int brightness = bd->props.brightness; + + s6d6aa1_check_mtp(lcd); + s6d6aa1_panel_init(lcd); + s6d6aa1_brightness_ctrl(lcd, brightness); + s6d6aa1_write_ctrld(lcd); + s6d6aa1_write_cabc(lcd, lcd->wm_mode); + s6d6aa1_display_on(lcd); + + dev_info(lcd->dev, "%s:done.\n", __func__); +} + +#ifdef CONFIG_OF +static int s6d6aa1_generic_reset(struct device *dev) +{ + struct s6d6aa1 *lcd = dev_get_drvdata(dev); + + gpio_set_value(lcd->reset_gpio, 1); + usleep_range(1000, 2000); + gpio_set_value(lcd->reset_gpio, 0); + usleep_range(1000, 2000); + gpio_set_value(lcd->reset_gpio, 1); + + return 0; +} + +static struct s6d6aa1_platform_data *s6d6aa1_parse_dt(struct s6d6aa1 *lcd) +{ + struct device_node *node = lcd->dev->of_node; + struct s6d6aa1_platform_data *data; + const __be32 *prop_data; + int ret; + + data = devm_kzalloc(lcd->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + dev_err(lcd->dev, "failed to allocate platform data.\n"); + return NULL; + } + + ret = of_get_videomode(node, &data->mode, 0); + if (ret) { + dev_err(lcd->dev, "failed to read video mode from DT\n"); + return NULL; + } + + lcd->reset_gpio = of_get_named_gpio(node, "reset-gpio", 0); + if (lcd->reset_gpio < 0) + return NULL; + + prop_data = of_get_property(node, "reset-delay", NULL); + if (!prop_data) + return NULL; + data->reset_delay = be32_to_cpu(*prop_data); + + prop_data = of_get_property(node, "power-on-delay", NULL); + if (!prop_data) + return NULL; + data->power_on_delay = be32_to_cpu(*prop_data); + + if (of_find_property(node, "flip-horizontal", NULL)) + data->flip_horizontal = true; + + if (of_find_property(node, "flip-vertical", NULL)) + data->flip_vertical = true; + + data->reset = s6d6aa1_generic_reset; + + return data; +} + +static struct of_device_id s6d6aa1_of_match[] = { + { .compatible = "samsung,s6d6aa1" }, + { } +}; + +MODULE_DEVICE_TABLE(of, s6d6aa1_of_match); +#else +static struct s6d6aa1_platform_data *s6d6aa1_parse_dt(struct s6d6aa1 *lcd) +{ + return NULL; +} +#endif + +static const struct display_entity_interface_params s6d6aa1_params = { + .type = DISPLAY_ENTITY_INTERFACE_DSI, + .p.dsi = { + .format = DSI_FMT_RGB888, + .mode = DSI_MODE_VIDEO | DSI_MODE_VIDEO_BURST + | DSI_MODE_VIDEO_HFP | DSI_MODE_VIDEO_HBP + | DSI_MODE_VIDEO_HSA | DSI_MODE_EOT_PACKET + | DSI_MODE_VSYNC_FLUSH, + .data_lanes = 0xf, + .hs_clk_freq = 500000000, + .esc_clk_freq = 10000000, + }, +}; + +static void s6d6aa1_power_on(struct s6d6aa1 *panel) +{ + struct video_source *src = panel->entity.source; + + regulator_bulk_enable(ARRAY_SIZE(panel->supplies), + panel->supplies); + + msleep(panel->pdata->power_on_delay); + + /* lcd reset */ + if (panel->pdata->reset) + panel->pdata->reset(panel->dev); + + msleep(panel->pdata->reset_delay); + + src->ops.dsi->enable(src); + + s6d6aa1_set_sequence(panel); +} + +static void s6d6aa1_power_off(struct s6d6aa1 *panel) +{ + struct video_source *src = panel->entity.source; + + s6d6aa1_sleep_in(panel); + s6d6aa1_display_off(panel); + + src->ops.dsi->disable(src); + + regulator_bulk_disable(ARRAY_SIZE(panel->supplies), + panel->supplies); +} + +static int s6d6aa1_set_state(struct display_entity *entity, + enum display_entity_state state) +{ + struct s6d6aa1 *panel = to_panel(entity); + struct video_source *src = panel->entity.source; + + switch (state) { + case DISPLAY_ENTITY_STATE_OFF: + if (entity->state == DISPLAY_ENTITY_STATE_ON) + src->common_ops->set_stream(src, + DISPLAY_ENTITY_STREAM_STOPPED); + s6d6aa1_power_off(panel); + break; + + case DISPLAY_ENTITY_STATE_STANDBY: + if (entity->state == DISPLAY_ENTITY_STATE_OFF) + s6d6aa1_power_on(panel); + + s6d6aa1_display_off(panel); + s6d6aa1_sleep_in(panel); + msleep(30); + + if (entity->state == DISPLAY_ENTITY_STATE_ON) + src->common_ops->set_stream(src, + DISPLAY_ENTITY_STREAM_STOPPED); + break; + + case DISPLAY_ENTITY_STATE_ON: + if (entity->state == DISPLAY_ENTITY_STATE_OFF) + s6d6aa1_power_on(panel); + + src->common_ops->set_stream(src, + DISPLAY_ENTITY_STREAM_CONTINUOUS); + + if (entity->state == DISPLAY_ENTITY_STATE_STANDBY) { + s6d6aa1_sleep_out(panel); + s6d6aa1_display_on(panel); + } + break; + + default: + break; + } + + return 0; +} + +static int s6d6aa1_get_modes(struct display_entity *entity, + const struct videomode **modes) +{ + struct s6d6aa1 *panel = to_panel(entity); + + *modes = &panel->pdata->mode; + return 1; +} + +static int s6d6aa1_get_size(struct display_entity *entity, + unsigned int *width, unsigned int *height) +{ + struct s6d6aa1 *panel = to_panel(entity); + + *width = panel->pdata->width; + *height = panel->pdata->height; + return 0; +} + +static int s6d6aa1_get_params(struct display_entity *entity, + struct display_entity_interface_params *params) +{ + *params = s6d6aa1_params; + return 0; +} + +static const struct display_entity_control_ops s6d6aa1_control_ops = { + .set_state = s6d6aa1_set_state, + .get_modes = s6d6aa1_get_modes, + .get_size = s6d6aa1_get_size, + .get_params = s6d6aa1_get_params, +}; + +static void s6d6aa1_release(struct display_entity *entity) +{ + struct s6d6aa1 *panel = to_panel(entity); + + backlight_device_unregister(panel->bd); + regulator_bulk_free(ARRAY_SIZE(panel->supplies), panel->supplies); + kfree(panel); +} + +static int s6d6aa1_probe(struct platform_device *pdev) +{ + struct s6d6aa1 *lcd; + int ret; + + lcd = kzalloc(sizeof(struct s6d6aa1), GFP_KERNEL); + if (!lcd) { + dev_err(&pdev->dev, "failed to allocate s6d6aa1 structure.\n"); + return -ENOMEM; + } + + lcd->dev = &pdev->dev; + lcd->pdata = (struct s6d6aa1_platform_data *)pdev->dev.platform_data; + + if (!lcd->pdata) { + lcd->pdata = s6d6aa1_parse_dt(lcd); + if (!lcd->pdata) { + dev_err(&pdev->dev, "failed to find platform data\n"); + return -ENODEV; + } + } + + lcd->supplies[0].supply = "vddi"; + lcd->supplies[1].supply = "vdd"; + ret = regulator_bulk_get(&pdev->dev, + ARRAY_SIZE(lcd->supplies), lcd->supplies); + if (ret) { + dev_err(&pdev->dev, "Failed to get regulators: %d\n", ret); + goto err_regulator_bulk_get; + } + + lcd->bd = backlight_device_register("s6d6aa1", &pdev->dev, lcd, + &s6d6aa1_backlight_ops, NULL); + if (IS_ERR(lcd->bd)) { + dev_err(&pdev->dev, "failed to register backlight ops.\n"); + ret = PTR_ERR(lcd->bd); + goto err_backlight_register; + } + + lcd->wm_mode = WM_MODE_NORMAL; + + lcd->bd->props.max_brightness = MAX_BRIGHTNESS; + lcd->bd->props.brightness = MAX_BRIGHTNESS; + + lcd->entity.of_node = pdev->dev.of_node; + lcd->entity.dev = &pdev->dev; + lcd->entity.release = s6d6aa1_release; + lcd->entity.ops = &s6d6aa1_control_ops; + + platform_set_drvdata(pdev, lcd); + + ret = display_entity_register(&lcd->entity); + if (ret < 0) + goto err_display_register; + + display_entity_set_state(&lcd->entity, DISPLAY_ENTITY_STATE_ON); + + dev_dbg(&pdev->dev, "probed s6d6aa1 panel driver.\n"); + + return 0; + +err_display_register: + backlight_device_unregister(lcd->bd); +err_backlight_register: + regulator_bulk_free(ARRAY_SIZE(lcd->supplies), lcd->supplies); +err_regulator_bulk_get: + kfree(lcd); + + return ret; +} + +static int s6d6aa1_remove(struct platform_device *dev) +{ + struct s6d6aa1 *lcd = platform_get_drvdata(dev); + + platform_set_drvdata(dev, NULL); + display_entity_unregister(&lcd->entity); + + return 0; +} + +static struct platform_driver s6d6aa1_driver = { + .probe = s6d6aa1_probe, + .remove = s6d6aa1_remove, + .driver = { + .name = "panel_s6d6aa1", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(s6d6aa1_of_match), + }, +}; +module_platform_driver(s6d6aa1_driver); + +MODULE_AUTHOR("Joongmock Shin <jmock.shin@samsung.com>"); +MODULE_AUTHOR("Eunchul Kim <chulspro.kim@samsung.com>"); +MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>"); +MODULE_DESCRIPTION("MIPI-DSI based s6d6aa1 TFT-LCD Panel Driver"); +MODULE_LICENSE("GPL"); |