diff options
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r-- | drivers/gpu/drm/panel/Kconfig | 9 | ||||
-rw-r--r-- | drivers/gpu/drm/panel/Makefile | 1 | ||||
-rw-r--r-- | drivers/gpu/drm/panel/panel-s6e63j0x03.c | 525 |
3 files changed, 535 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index a54d89b5f55..46e1e5ae7ab 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -32,4 +32,13 @@ config DRM_PANEL_S6E8AA0 select BACKLIGHT_LCD_SUPPORT select BACKLIGHT_CLASS_DEVICE +config DRM_PANEL_S6E63J0x03 + tristate "S6E63J0x03 DSI command mode panel" + depends on DRM && DRM_PANEL + depends on OF + select DRM_MIPI_DSI + select VIDEOMODE_HELPERS + select BACKLIGHT_LCD_SUPPORT + select BACKLIGHT_CLASS_DEVICE + endmenu diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 8b929212fad..74b9c97fe2d 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o +obj-$(CONFIG_DRM_PANEL_S6E63J0x03) += panel-s6e63j0x03.o
\ No newline at end of file diff --git a/drivers/gpu/drm/panel/panel-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-s6e63j0x03.c new file mode 100644 index 00000000000..9f16075e9da --- /dev/null +++ b/drivers/gpu/drm/panel/panel-s6e63j0x03.c @@ -0,0 +1,525 @@ +/* + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver. + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd + * + * Inki Dae, <inki.dae@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 <drm/drmP.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.h> + +#include <linux/of_gpio.h> +#include <linux/gpio.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> +#include <video/of_videomode.h> +#include <video/videomode.h> + +#define GAMMA_LEVEL_NUM 30 +#define MTP_ID_LEN 6 +/* Manufacturer Command Set */ +#define MCS_MTP_ID 0xD3 + +struct s6e63j0x03 { + struct device *dev; + struct drm_panel panel; + + struct regulator_bulk_data supplies[2]; + int reset_gpio; + int te_gpio; + u32 power_on_delay; + u32 power_off_delay; + u32 reset_delay; + u32 init_delay; + bool flip_horizontal; + bool flip_vertical; + struct videomode vm; + u32 width_mm; + u32 height_mm; + + int brightness; + + /* This field is tested by functions directly accessing DSI bus before + * transfer, transfer is skipped if it is set. In case of transfer + * failure or unexpected response the field is set to error value. + * Such construct allows to eliminate many checks in higher level + * functions. + */ + int error; +}; + +static inline struct s6e63j0x03 *panel_to_s6e63j0x03(struct drm_panel *panel) +{ + return container_of(panel, struct s6e63j0x03, panel); +} + +static int s6e63j0x03_clear_error(struct s6e63j0x03 *ctx) +{ + int ret = ctx->error; + + ctx->error = 0; + return ret; +} + +static void s6e63j0x03_dcs_write(struct s6e63j0x03 *ctx, const void *data, size_t len) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + int ret; + + if (ctx->error < 0) + return; + + ret = mipi_dsi_dcs_write(dsi, dsi->channel, data, len); + if (ret < 0) { + dev_err(ctx->dev, "error %d writing dcs seq: %*ph\n", ret, len, + data); + ctx->error = ret; + } +} + +static int s6e63j0x03_dcs_read(struct s6e63j0x03 *ctx, u8 cmd, void *data, size_t len) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + int ret; + + if (ctx->error < 0) + return ctx->error; + + ret = mipi_dsi_dcs_read(dsi, dsi->channel, cmd, data, len); + if (ret < 0) { + dev_err(ctx->dev, "error %d reading dcs seq(%#x)\n", ret, cmd); + ctx->error = ret; + } + + return ret; +} + +#define s6e63j0x03_dcs_write_seq(ctx, seq...) \ +({\ + const u8 d[] = { seq };\ + BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "DCS sequence too big for stack");\ + s6e63j0x03_dcs_write(ctx, d, ARRAY_SIZE(d));\ +}) + +#define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \ +({\ + static const u8 d[] = { seq };\ + s6e63j0x03_dcs_write(ctx, d, ARRAY_SIZE(d));\ +}) + +static void s6e63j0x03_test_level_1_key_on(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a); +} + +static void s6e63j0x03_test_level_2_key_on(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xf1, 0x5a, 0x5a); +} + +static void s6e63j0x03_porch_adjustment(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xf2, 0x1c, 0x28); +} + +static void s6e63j0x03_frame_freq(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xb5, 0x00, 0x01, 0x00); +} + +static void s6e63j0x03_mem_addr_set_0(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0x2a, 0x00, 0x14, 0x01, 0x53); +} + +static void s6e63j0x03_mem_addr_set_1(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0x2b, 0x00, 0x00, 0x01, 0x3f); +} + +static void s6e63j0x03_ltps_timming_set_0_60hz(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, + 0xf8, 0x08, 0x08, 0x08, 0x17, 0x00, 0x2a, 0x02, + 0x26, 0x00, 0x00, 0x02, 0x00, 0x00); +} + +static void s6e63j0x03_ltps_timming_set_1(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xf7, 0x02); +} + +static void s6e63j0x03_param_pos_te_edge(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xb0, 0x01); +} + +static void s6e63j0x03_te_rising_edge(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xe2, 0x0f); +} + +static void s6e63j0x03_param_pos_default(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xb0, 0x00); +} + +static void s6e63j0x03_elvss_cond(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xb1, 0x00, 0x09); +} + +static void s6e63j0x03_set_pos(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0x36, 0x40); +} + +static void s6e63j0x03_white_brightness_default(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0x51, 0xff); +} + +static void s6e63j0x03_white_ctrl(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0x53, 0x20); +} + +static void s6e63j0x03_acl_off(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0x55, 0x00); +} + +static void s6e63j0x03_test_level_2_key_off(struct s6e63j0x03 *ctx) +{ + s6e63j0x03_dcs_write_seq_static(ctx, 0xf1, 0xa5, 0xa5); +} + +static void s6e63j0x03_set_maximum_return_packet_size(struct s6e63j0x03 *ctx, + unsigned int size) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + const struct mipi_dsi_host_ops *ops = dsi->host->ops; + + if (ops && ops->transfer) { + unsigned char buf[] = {size, 0}; + struct mipi_dsi_msg msg = { + .channel = dsi->channel, + .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, + .tx_len = sizeof(buf), + .tx_buf = buf + }; + + ops->transfer(dsi->host, &msg); + } +} + +static void s6e63j0x03_read_mtp_id(struct s6e63j0x03 *ctx) +{ + unsigned char id[MTP_ID_LEN]; + int ret; + + s6e63j0x03_test_level_2_key_on(ctx); + + s6e63j0x03_set_maximum_return_packet_size(ctx, MTP_ID_LEN); + ret = s6e63j0x03_dcs_read(ctx, MCS_MTP_ID, id, MTP_ID_LEN); + + s6e63j0x03_test_level_2_key_off(ctx); + + if (ret < MTP_ID_LEN || id[3] != 0x22) { + dev_err(ctx->dev, "failed to read id,\n"); + return; + } + + dev_info(ctx->dev, "ID: 0x%02x, 0x%02x, 0x%02x\n", id[3], id[2], id[5]); +} + +static void s6e63j0x03_set_sequence(struct s6e63j0x03 *ctx) +{ + /* Test key enable */ + s6e63j0x03_test_level_1_key_on(ctx); + s6e63j0x03_test_level_2_key_on(ctx); + + s6e63j0x03_porch_adjustment(ctx); + s6e63j0x03_frame_freq(ctx); + s6e63j0x03_frame_freq(ctx); + s6e63j0x03_mem_addr_set_0(ctx); + s6e63j0x03_mem_addr_set_1(ctx); + + s6e63j0x03_ltps_timming_set_0_60hz(ctx); + s6e63j0x03_ltps_timming_set_1(ctx); + + s6e63j0x03_param_pos_te_edge(ctx); + s6e63j0x03_te_rising_edge(ctx); + s6e63j0x03_param_pos_default(ctx); + + s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE); + msleep(120); + + /* etc condition setting */ + s6e63j0x03_elvss_cond(ctx); + s6e63j0x03_set_pos(ctx); + + /* brightness setting */ + s6e63j0x03_white_brightness_default(ctx); + s6e63j0x03_white_ctrl(ctx); + s6e63j0x03_acl_off(ctx); + + s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_SET_TEAR_ON); + s6e63j0x03_test_level_2_key_off(ctx); + + /* display on */ + s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON); +} + +static int s6e63j0x03_power_on(struct s6e63j0x03 *ctx) +{ + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret < 0) + return ret; + + usleep_range(ctx->power_on_delay * 1000, + (ctx->power_on_delay + 1) * 1000); + + gpio_set_value(ctx->reset_gpio, 0); + usleep_range(1000, 2000); + gpio_set_value(ctx->reset_gpio, 1); + + usleep_range(ctx->reset_delay * 1000, + (ctx->reset_delay + 1) * 1000); + + return 0; +} + +static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx) +{ + int ret; + + gpio_set_value(ctx->reset_gpio, 0); + + ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret < 0) + return ret; + + return 0; +} + +static int s6e63j0x03_disable(struct drm_panel *panel) +{ + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); + + s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF); + s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE); + + s6e63j0x03_clear_error(ctx); + + usleep_range(ctx->power_off_delay * 1000, + (ctx->power_off_delay + 1) * 1000); + + return s6e63j0x03_power_off(ctx); +} + +static int s6e63j0x03_enable(struct drm_panel *panel) +{ + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); + int ret; + + ret = s6e63j0x03_power_on(ctx); + if (ret < 0) + return ret; + + s6e63j0x03_read_mtp_id(ctx); + + s6e63j0x03_set_sequence(ctx); + ret = ctx->error; + + if (ret < 0) + s6e63j0x03_disable(panel); + + return ret; +} + +static int s6e63j0x03_get_modes(struct drm_panel *panel) +{ + struct drm_connector *connector = panel->connector; + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); + struct drm_display_mode *mode; + + mode = drm_mode_create(connector->dev); + if (!mode) { + DRM_ERROR("failed to create a new display mode\n"); + return 0; + } + + drm_display_mode_from_videomode(&ctx->vm, mode); + mode->width_mm = ctx->width_mm; + mode->height_mm = ctx->height_mm; + connector->display_info.width_mm = mode->width_mm; + connector->display_info.height_mm = mode->height_mm; + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_probed_add(connector, mode); + + return 1; +} + +static const struct drm_panel_funcs s6e63j0x03_drm_funcs = { + .disable = s6e63j0x03_disable, + .enable = s6e63j0x03_enable, + .get_modes = s6e63j0x03_get_modes, +}; + +static int s6e63j0x03_parse_dt(struct s6e63j0x03 *ctx) +{ + struct device *dev = ctx->dev; + struct device_node *np = dev->of_node; + int ret; + + ret = of_get_videomode(np, &ctx->vm, 0); + if (ret < 0) + return ret; + + of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay); + of_property_read_u32(np, "power-off-delay", &ctx->power_off_delay); + of_property_read_u32(np, "reset-delay", &ctx->reset_delay); + of_property_read_u32(np, "init-delay", &ctx->init_delay); + + ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal"); + ctx->flip_vertical = of_property_read_bool(np, "flip-vertical"); + + + ctx->te_gpio = of_get_named_gpio(dev->of_node, "te-gpios", 0); + if (ctx->te_gpio < 0) + return ctx->te_gpio; + + ret = devm_gpio_request(dev, ctx->te_gpio, "te-gpio"); + if (ret) { + dev_err(dev, "failed to request te-gpio\n"); + return ret; + } + + return gpio_direction_input(ctx->te_gpio); +} + +irqreturn_t s6e63j0x03_te_interrupt(int irq, void *dev_id) +{ + struct s6e63j0x03 *ctx = dev_id; + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct mipi_dsi_host *host = dsi->host; + const struct mipi_dsi_host_ops *ops = host->ops; + + if (ops && ops->te_handler) + ops->te_handler(host); + + return IRQ_HANDLED; +} + +static int s6e63j0x03_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct s6e63j0x03 *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(struct s6e63j0x03), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->dev = dev; + + dsi->lanes = 1; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_EOT_PACKET | MIPI_DSI_MODE_VIDEO_BURST; + + ret = s6e63j0x03_parse_dt(ctx); + if (ret < 0) + return ret; + + ctx->supplies[0].supply = "vdd3"; + ctx->supplies[1].supply = "vci"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), + ctx->supplies); + if (ret < 0) { + dev_err(dev, "failed to get regulators: %d\n", ret); + return ret; + } + + ctx->reset_gpio = of_get_named_gpio(dev->of_node, "reset-gpios", 0); + if (ctx->reset_gpio < 0) { + dev_err(dev, "cannot get reset-gpios %d\n", + ctx->reset_gpio); + return ctx->reset_gpio; + } + + ret = devm_gpio_request(dev, ctx->reset_gpio, "reset-gpio"); + if (ret) { + dev_err(dev, "failed to request reset-gpio\n"); + return ret; + } + + ret = gpio_direction_output(ctx->reset_gpio, 1); + if (ret < 0) { + dev_err(dev, "cannot configure reset-gpios %d\n", ret); + return ret; + } + + ret = devm_request_irq(ctx->dev, gpio_to_irq(ctx->te_gpio), + s6e63j0x03_te_interrupt, + IRQF_TRIGGER_RISING, "TE", ctx); + if (ret < 0) { + dev_err(dev, "failed to request te irq.\n"); + return ret; + } + + ctx->brightness = GAMMA_LEVEL_NUM - 1; + + drm_panel_init(&ctx->panel); + ctx->panel.dev = dev; + ctx->panel.funcs = &s6e63j0x03_drm_funcs; + + ret = drm_panel_add(&ctx->panel); + if (ret < 0) + return ret; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) + drm_panel_remove(&ctx->panel); + + return ret; +} + +static int s6e63j0x03_remove(struct mipi_dsi_device *dsi) +{ + struct s6e63j0x03 *ctx = mipi_dsi_get_drvdata(dsi); + + mipi_dsi_detach(dsi); + drm_panel_remove(&ctx->panel); + + return 0; +} + +static struct of_device_id s6e63j0x03_of_match[] = { + { .compatible = "samsung,s6e63j0x03" }, + { } +}; +MODULE_DEVICE_TABLE(of, s6e63j0x03_of_match); + +static struct mipi_dsi_driver s6e63j0x03_driver = { + .probe = s6e63j0x03_probe, + .remove = s6e63j0x03_remove, + .driver = { + .name = "panel_s6e63j0x03", + .owner = THIS_MODULE, + .of_match_table = s6e63j0x03_of_match, + }, +}; +module_mipi_dsi_driver(s6e63j0x03_driver); |