| Message ID | 1400048825-6052-15-git-send-email-yj44.cho@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 05/14/2014 08:27 AM, YoungJun Cho wrote: > This patch adds MIPI-DSI command mode based S6E3FA0 AMOLED LCD Panel driver. > > Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> > Acked-by: Inki Dae <inki.dae@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Few nitpicks, beside them. Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> > --- > drivers/gpu/drm/panel/Kconfig | 7 + > drivers/gpu/drm/panel/Makefile | 1 + > drivers/gpu/drm/panel/panel-s6e3fa0.c | 570 +++++++++++++++++++++++++++++++++ > 3 files changed, 578 insertions(+) > create mode 100644 drivers/gpu/drm/panel/panel-s6e3fa0.c > > diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig > index 4ec874d..fa51237 100644 > --- a/drivers/gpu/drm/panel/Kconfig > +++ b/drivers/gpu/drm/panel/Kconfig > @@ -30,4 +30,11 @@ config DRM_PANEL_S6E8AA0 > select DRM_MIPI_DSI > select VIDEOMODE_HELPERS > > +config DRM_PANEL_S6E3FA0 > + tristate "S6E3FA0 DSI command mode panel" > + depends on DRM && DRM_PANEL > + depends on OF > + select DRM_MIPI_DSI > + select CMDMODE_HELPERS > + > endmenu > diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile > index 8b92921..85c6738 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_S6E3FA0) += panel-s6e3fa0.o > diff --git a/drivers/gpu/drm/panel/panel-s6e3fa0.c b/drivers/gpu/drm/panel/panel-s6e3fa0.c > new file mode 100644 > index 0000000..a3b2d7e > --- /dev/null > +++ b/drivers/gpu/drm/panel/panel-s6e3fa0.c > @@ -0,0 +1,570 @@ > +/* > + * MIPI-DSI based s6e3fa0 AMOLED LCD 5.7 inch panel driver. > + * > + * Copyright (c) 2014 Samsung Electronics Co., Ltd > + * > + * YoungJun Cho <yj44.cho@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/gpio/consumer.h> > +#include <linux/regulator/consumer.h> > + > +#include <video/mipi_display.h> > +#include <video/of_cmdmode.h> > +#include <video/cmdmode.h> > + > +/* Manufacturer Command Set */ > +#define MCS_GLOBAL_PARAMETER 0xb0 > +#define MCS_AID 0xb2 > +#define MCS_ELVSSOPT 0xb6 > +#define MCS_TEMPERATURE_SET 0xb8 > +#define MCS_PENTILE_CTRL 0xc0 > +#define MCS_GAMMA_MODE 0xca > +#define MCS_VDDM 0xd7 > +#define MCS_ALS 0xe3 > +#define MCS_ERR_FG 0xed > +#define MCS_KEY_LEV1 0xf0 > +#define MCS_PANEL_UPDATE 0xf7 > +#define MCS_KEY_LEV2 0xfc > +#define MCS_RE 0xfe > +#define MCS_TOUT2_HSYNC 0xff > + > +/* Content Adaptive Brightness Control */ > +#define DCS_WRITE_CABC 0x55 > + > +#define MTP_ID_LEN 3 > +#define GAMMA_LEVEL_NUM 30 > + > +#define DEFAULT_VDDM_VAL 0x15 > + > +struct s6e3fa0 { > + struct device *dev; > + struct drm_panel panel; > + > + struct regulator_bulk_data supplies[2]; > + struct gpio_desc *reset_gpio; > + struct gpio_desc *det_gpio; > + struct gpio_desc *te_gpio; > + struct cmdmode cm; > + > + unsigned int power_on_delay; > + unsigned int reset_delay; > + unsigned int init_delay; > + unsigned int width_mm; > + unsigned int height_mm; > + > + unsigned char id; > + unsigned char vddm; > + unsigned int brightness; > +}; > + > +#define panel_to_s6e3fa0(p) container_of(p, struct s6e3fa0, panel) > + > +/* VDD Memory Lookup Table contains paires of {ReadValue, WriteValue} */ s/paires/pairs/ > +static const unsigned char s6e3fa0_vddm_lut[][2] = { > + {0x00, 0x0d}, {0x01, 0x0d}, {0x02, 0x0e}, {0x03, 0x0f}, {0x04, 0x10}, > + {0x05, 0x11}, {0x06, 0x12}, {0x07, 0x13}, {0x08, 0x14}, {0x09, 0x15}, > + {0x0a, 0x16}, {0x0b, 0x17}, {0x0c, 0x18}, {0x0d, 0x19}, {0x0e, 0x1a}, > + {0x0f, 0x1b}, {0x10, 0x1c}, {0x11, 0x1d}, {0x12, 0x1e}, {0x13, 0x1f}, > + {0x14, 0x20}, {0x15, 0x21}, {0x16, 0x22}, {0x17, 0x23}, {0x18, 0x24}, > + {0x19, 0x25}, {0x1a, 0x26}, {0x1b, 0x27}, {0x1c, 0x28}, {0x1d, 0x29}, > + {0x1e, 0x2a}, {0x1f, 0x2b}, {0x20, 0x2c}, {0x21, 0x2d}, {0x22, 0x2e}, > + {0x23, 0x2f}, {0x24, 0x30}, {0x25, 0x31}, {0x26, 0x32}, {0x27, 0x33}, > + {0x28, 0x34}, {0x29, 0x35}, {0x2a, 0x36}, {0x2b, 0x37}, {0x2c, 0x38}, > + {0x2d, 0x39}, {0x2e, 0x3a}, {0x2f, 0x3b}, {0x30, 0x3c}, {0x31, 0x3d}, > + {0x32, 0x3e}, {0x33, 0x3f}, {0x34, 0x3f}, {0x35, 0x3f}, {0x36, 0x3f}, > + {0x37, 0x3f}, {0x38, 0x3f}, {0x39, 0x3f}, {0x3a, 0x3f}, {0x3b, 0x3f}, > + {0x3c, 0x3f}, {0x3d, 0x3f}, {0x3e, 0x3f}, {0x3f, 0x3f}, {0x40, 0x0c}, > + {0x41, 0x0b}, {0x42, 0x0a}, {0x43, 0x09}, {0x44, 0x08}, {0x45, 0x07}, > + {0x46, 0x06}, {0x47, 0x05}, {0x48, 0x04}, {0x49, 0x03}, {0x4a, 0x02}, > + {0x4b, 0x01}, {0x4c, 0x40}, {0x4d, 0x41}, {0x4e, 0x42}, {0x4f, 0x43}, > + {0x50, 0x44}, {0x51, 0x45}, {0x52, 0x46}, {0x53, 0x47}, {0x54, 0x48}, > + {0x55, 0x49}, {0x56, 0x4a}, {0x57, 0x4b}, {0x58, 0x4c}, {0x59, 0x4d}, > + {0x5a, 0x4e}, {0x5b, 0x4f}, {0x5c, 0x50}, {0x5d, 0x51}, {0x5e, 0x52}, > + {0x5f, 0x53}, {0x60, 0x54}, {0x61, 0x55}, {0x62, 0x56}, {0x63, 0x57}, > + {0x64, 0x58}, {0x65, 0x59}, {0x66, 0x5a}, {0x67, 0x5b}, {0x68, 0x5c}, > + {0x69, 0x5d}, {0x6a, 0x5e}, {0x6b, 0x5f}, {0x6c, 0x60}, {0x6d, 0x61}, > + {0x6e, 0x62}, {0x6f, 0x63}, {0x70, 0x64}, {0x71, 0x65}, {0x72, 0x66}, > + {0x73, 0x67}, {0x74, 0x68}, {0x75, 0x69}, {0x76, 0x6a}, {0x77, 0x6b}, > + {0x78, 0x6c}, {0x79, 0x6d}, {0x7a, 0x6e}, {0x7b, 0x6f}, {0x7c, 0x70}, > + {0x7d, 0x71}, {0x7e, 0x72}, {0x7f, 0x73}, > +}; > + > +static int s6e3fa0_dcs_read(struct s6e3fa0 *ctx, unsigned char cmd, > + void *data, size_t len) > +{ > + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); > + > + return mipi_dsi_dcs_read(dsi, dsi->channel, cmd, data, len); > +} > + > +static void s6e3fa0_dcs_write(struct s6e3fa0 *ctx, const void *data, size_t len) > +{ > + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); > + > + mipi_dsi_dcs_write(dsi, dsi->channel, data, len); > +} > + > +#define s6e3fa0_dcs_write_seq(ctx, seq...) \ > +do { \ > + const unsigned char d[] = { seq }; \ > + BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "too big seq for stack"); \ > + s6e3fa0_dcs_write(ctx, d, ARRAY_SIZE(d)); \ > +} while (0) > + > +#define s6e3fa0_dcs_write_seq_static(ctx, seq...) \ > +do { \ > + static const unsigned char d[] = { seq }; \ > + s6e3fa0_dcs_write(ctx, d, ARRAY_SIZE(d)); \ > +} while (0) > + > +static void s6e3fa0_apply_level_1_key(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV1, 0x5a, 0x5a); > +} > + > +static void s6e3fa0_apply_level_2_key(struct s6e3fa0 *ctx, bool on) > +{ > + if (on) > + s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV2, 0x5a, 0x5a); > + else > + s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV2, 0xa5, 0xa5); > +} > + > +static void s6e3fa0_set_maximum_return_packet_size(struct s6e3fa0 *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 s6e3fa0_read_mtp_id(struct s6e3fa0 *ctx) > +{ > + unsigned char id[MTP_ID_LEN]; > + int ret; > + > + s6e3fa0_set_maximum_return_packet_size(ctx, MTP_ID_LEN); > + ret = s6e3fa0_dcs_read(ctx, MIPI_DCS_GET_DISPLAY_ID, id, MTP_ID_LEN); > + if (ret < MTP_ID_LEN || id[0] == 0x00) { > + dev_err(ctx->dev, "failed to read id\n"); > + return; > + } > + > + dev_info(ctx->dev, "ID: 0x%02x, 0x%02x, 0x%02x\n", id[0], id[1], id[2]); > + > + ctx->id = id[2]; > +} > + > +static void s6e3fa0_read_vddm(struct s6e3fa0 *ctx) > +{ > + unsigned char vddm; > + int ret; > + > + s6e3fa0_apply_level_2_key(ctx, true); > + s6e3fa0_dcs_write_seq_static(ctx, MCS_GLOBAL_PARAMETER, 0x16); > + s6e3fa0_set_maximum_return_packet_size(ctx, 1); > + ret = s6e3fa0_dcs_read(ctx, MCS_VDDM, &vddm, 1); > + s6e3fa0_apply_level_2_key(ctx, false); > + > + if (ret < 1 || vddm > 0x7f) { > + dev_err(ctx->dev, "failed to read vddm, use default val.\n"); > + vddm = DEFAULT_VDDM_VAL; > + } > + > + ctx->vddm = s6e3fa0_vddm_lut[vddm][1]; > +} > + > +static void s6e3fa0_set_pentile_control(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_PENTILE_CTRL, 0x00, 0x02, 0x03, > + 0x32, 0x03, 0x44, 0x44, 0xc0, 0x00, > + 0x1c, 0x20, 0xe8); > +} > + > +static void s6e3fa0_write_ambient_light_sensor(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_ALS, 0xff, 0xff, 0xff, 0xff); > +} > + > +static void s6e3fa0_set_readability_enhancement(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_RE, 0x00, 0x03, > + MCS_GLOBAL_PARAMETER, 0x2b, > + MCS_RE, 0xe4); > +} > + > +static void s6e3fa0_set_common_control(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_set_pentile_control(ctx); > + s6e3fa0_write_ambient_light_sensor(ctx); > + s6e3fa0_set_readability_enhancement(ctx); > +} > + > +static void s6e3fa0_set_gamma(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_GAMMA_MODE, 0x01, 0x00, 0x01, > + 0x00, 0x01, 0x00, 0x80, 0x80, 0x80, > + 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, > + 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, > + 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, > + 0x80, 0x80, 0x00, 0x00, 0x00); > +} > + > +static void s6e3fa0_set_amoled_impulse_driving(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_AID, 0x00, 0x06, 0x00, 0x06); > +} > + > +static void s6e3fa0_set_elvss(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_ELVSSOPT, 0x88, 0x0a); > +} > + > +static void s6e3fa0_update_panel(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_PANEL_UPDATE, 0x03); > +} > + > +static void s6e3fa0_write_automatic_current_limit(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, DCS_WRITE_CABC, 0x02); > +} > + > +static void s6e3fa0_set_brightness_control(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_set_gamma(ctx); > + s6e3fa0_set_amoled_impulse_driving(ctx); > + s6e3fa0_set_elvss(ctx); > + s6e3fa0_update_panel(ctx); > + s6e3fa0_write_automatic_current_limit(ctx); > +} > + > +static void s6e3fa0_set_temperature(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MCS_GLOBAL_PARAMETER, 0x05, > + MCS_TEMPERATURE_SET, 0x19); > +} > + > +static void s6e3fa0_set_elvss_control(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_set_temperature(ctx); > + s6e3fa0_set_elvss(ctx); > +} > + > +static void s6e3fa0_set_te_on(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_TEAR_ON, 0x00); > +} > + > +static void s6e3fa0_set_etc_and_write_vddm(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_apply_level_2_key(ctx, true); > + s6e3fa0_dcs_write_seq(ctx, MCS_ERR_FG, 0x0c, 0x04, > + MCS_TOUT2_HSYNC, 0x01, > + MCS_GLOBAL_PARAMETER, 0x16, > + MCS_VDDM, ctx->vddm); > + s6e3fa0_apply_level_2_key(ctx, false); > +} > + > +static void s6e3fa0_set_etc_condition(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_set_te_on(ctx); > + s6e3fa0_set_etc_and_write_vddm(ctx); > +} > + > +static void s6e3fa0_panel_init(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_set_common_control(ctx); > + s6e3fa0_set_brightness_control(ctx); > + s6e3fa0_set_elvss_control(ctx); > + s6e3fa0_set_etc_condition(ctx); > + > + msleep(ctx->init_delay); > +} > + > +static int s6e3fa0_power_off(struct s6e3fa0 *ctx) > +{ > + gpiod_set_value(ctx->reset_gpio, 0); > + > + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); > +} > + > +static int s6e3fa0_power_on(struct s6e3fa0 *ctx) > +{ > + int ret; > + > + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); > + if (ret) > + return ret; > + > + msleep(ctx->power_on_delay); > + > + gpiod_set_value(ctx->reset_gpio, 1); > + gpiod_set_value(ctx->reset_gpio, 0); > + usleep_range(1000, 2000); > + gpiod_set_value(ctx->reset_gpio, 1); > + > + msleep(ctx->reset_delay); > + > + return 0; > +} > + > +static void s6e3fa0_set_sequence(struct s6e3fa0 *ctx) > +{ > + s6e3fa0_apply_level_1_key(ctx); > + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE); > + msleep(20); > + > + s6e3fa0_read_mtp_id(ctx); > + s6e3fa0_read_vddm(ctx); > + > + s6e3fa0_panel_init(ctx); > + > + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON); > +} > + > +static int s6e3fa0_disable(struct drm_panel *panel) > +{ > + struct s6e3fa0 *ctx = panel_to_s6e3fa0(panel); > + > + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE); > + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF); > + msleep(35); > + > + return s6e3fa0_power_off(ctx); > +} > + > +static int s6e3fa0_enable(struct drm_panel *panel) > +{ > + struct s6e3fa0 *ctx = panel_to_s6e3fa0(panel); > + int ret; > + > + ret = s6e3fa0_power_on(ctx); > + if (ret) > + return ret; > + > + s6e3fa0_set_sequence(ctx); > + > + return ret; > +} > + > +static int s6e3fa0_get_modes(struct drm_panel *panel) > +{ > + struct drm_connector *connector = panel->connector; > + struct s6e3fa0 *ctx = panel_to_s6e3fa0(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_cmdmode(&ctx->cm, 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 s6e3fa0_drm_funcs = { > + .disable = s6e3fa0_disable, > + .enable = s6e3fa0_enable, > + .get_modes = s6e3fa0_get_modes, > +}; > + > +static int s6e3fa0_parse_dt(struct s6e3fa0 *ctx) > +{ > + struct device *dev = ctx->dev; > + int ret; > + > + ret = of_get_cmdmode(dev->of_node, &ctx->cm, 0); > + if (ret) { > + dev_err(dev, "failed to get command mode: %d\n", ret); > + return ret; > + } > + > + return ret; > +} > + > +irqreturn_t s6e3fa0_det_interrupt(int irq, void *dev_id) > +{ > + /* TODO */ > + return IRQ_HANDLED; > +} > + > +irqreturn_t s6e3fa0_te_interrupt(int irq, void *dev_id) > +{ > + struct s6e3fa0 *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 s6e3fa0_probe(struct mipi_dsi_device *dsi) > +{ > + struct device *dev = &dsi->dev; > + struct s6e3fa0 *ctx; > + int ret; > + > + ctx = devm_kzalloc(dev, sizeof(struct s6e3fa0), GFP_KERNEL); > + if (!ctx) { > + dev_err(dev, "failed to allocate s6e3fa0 structure.\n"); Error message is not necessary, core prints stack trace already. Regards Andrzej > + return -ENOMEM; > + } > + > + mipi_dsi_set_drvdata(dsi, ctx); > + > + ctx->dev = dev; > + > + dsi->lanes = 4; > + dsi->format = MIPI_DSI_FMT_RGB888; > + > + ret = s6e3fa0_parse_dt(ctx); > + if (ret) > + 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) { > + dev_err(dev, "failed to get regulators: %d\n", ret); > + return ret; > + } > + > + ctx->reset_gpio = devm_gpiod_get(dev, "reset"); > + if (IS_ERR(ctx->reset_gpio)) { > + dev_err(dev, "failed to get reset gpio: %ld\n", > + PTR_ERR(ctx->reset_gpio)); > + return PTR_ERR(ctx->reset_gpio); > + } > + ret = gpiod_direction_output(ctx->reset_gpio, 1); > + if (ret < 0) { > + dev_err(dev, "failed to configure reset gpio: %d\n", ret); > + return ret; > + } > + > + ctx->det_gpio = devm_gpiod_get(dev, "det"); > + if (IS_ERR(ctx->det_gpio)) { > + dev_err(dev, "failed to get det gpio: %ld\n", > + PTR_ERR(ctx->det_gpio)); > + return PTR_ERR(ctx->det_gpio); > + } > + ret = gpiod_direction_input(ctx->det_gpio); > + if (ret < 0) { > + dev_err(dev, "failed to configure det gpio: %d\n", ret); > + return ret; > + } > + ret = devm_request_irq(dev, gpiod_to_irq(ctx->det_gpio), > + s6e3fa0_det_interrupt, > + IRQF_TRIGGER_FALLING, > + "oled-det", ctx); > + if (ret) { > + dev_err(dev, "failed to request det irq: %d\n", ret); > + return ret; > + } > + > + ctx->te_gpio = devm_gpiod_get(dev, "te"); > + if (IS_ERR(ctx->te_gpio)) { > + dev_err(dev, "failed to get te gpio: %ld\n", > + PTR_ERR(ctx->te_gpio)); > + return PTR_ERR(ctx->te_gpio); > + } > + ret = gpiod_direction_input(ctx->te_gpio); > + if (ret < 0) { > + dev_err(dev, "failed to configure te gpio: %d\n", ret); > + return ret; > + } > + ret = devm_request_irq(dev, gpiod_to_irq(ctx->te_gpio), > + s6e3fa0_te_interrupt, > + IRQF_TRIGGER_RISING, > + "TE", ctx); > + if (ret) { > + dev_err(dev, "failed to request det irq: %d\n", ret); > + return ret; > + } > + > + ctx->power_on_delay = 10; > + ctx->reset_delay = 5; > + ctx->init_delay = 120; > + ctx->width_mm = 71; > + ctx->height_mm = 126; > + > + ctx->brightness = GAMMA_LEVEL_NUM - 1; > + > + drm_panel_init(&ctx->panel); > + ctx->panel.dev = dev; > + ctx->panel.funcs = &s6e3fa0_drm_funcs; > + > + ret = drm_panel_add(&ctx->panel); > + if (ret) > + return ret; > + > + ret = mipi_dsi_attach(dsi); > + if (ret) > + drm_panel_remove(&ctx->panel); > + > + return ret; > +} > + > +static int s6e3fa0_remove(struct mipi_dsi_device *dsi) > +{ > + struct s6e3fa0 *ctx = mipi_dsi_get_drvdata(dsi); > + > + mipi_dsi_detach(dsi); > + drm_panel_remove(&ctx->panel); > + > + return 0; > +} > + > +static struct of_device_id s6e3fa0_of_match[] = { > + { .compatible = "samsung,s6e3fa0" }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, s6e3fa0_of_match); > + > +static struct mipi_dsi_driver s6e3fa0_driver = { > + .probe = s6e3fa0_probe, > + .remove = s6e3fa0_remove, > + .driver = { > + .name = "panel_s6e3fa0", > + .owner = THIS_MODULE, > + .of_match_table = s6e3fa0_of_match, > + }, > +}; > +module_mipi_dsi_driver(s6e3fa0_driver); > + > +MODULE_AUTHOR("YoungJun Cho <yj44.cho@samsung.com>"); > +MODULE_DESCRIPTION("MIPI-DSI based s6e3fa0 AMOLED LCD Panel Driver"); > +MODULE_LICENSE("GPL v2"); -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 4ec874d..fa51237 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -30,4 +30,11 @@ config DRM_PANEL_S6E8AA0 select DRM_MIPI_DSI select VIDEOMODE_HELPERS +config DRM_PANEL_S6E3FA0 + tristate "S6E3FA0 DSI command mode panel" + depends on DRM && DRM_PANEL + depends on OF + select DRM_MIPI_DSI + select CMDMODE_HELPERS + endmenu diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 8b92921..85c6738 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_S6E3FA0) += panel-s6e3fa0.o diff --git a/drivers/gpu/drm/panel/panel-s6e3fa0.c b/drivers/gpu/drm/panel/panel-s6e3fa0.c new file mode 100644 index 0000000..a3b2d7e --- /dev/null +++ b/drivers/gpu/drm/panel/panel-s6e3fa0.c @@ -0,0 +1,570 @@ +/* + * MIPI-DSI based s6e3fa0 AMOLED LCD 5.7 inch panel driver. + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd + * + * YoungJun Cho <yj44.cho@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/gpio/consumer.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> +#include <video/of_cmdmode.h> +#include <video/cmdmode.h> + +/* Manufacturer Command Set */ +#define MCS_GLOBAL_PARAMETER 0xb0 +#define MCS_AID 0xb2 +#define MCS_ELVSSOPT 0xb6 +#define MCS_TEMPERATURE_SET 0xb8 +#define MCS_PENTILE_CTRL 0xc0 +#define MCS_GAMMA_MODE 0xca +#define MCS_VDDM 0xd7 +#define MCS_ALS 0xe3 +#define MCS_ERR_FG 0xed +#define MCS_KEY_LEV1 0xf0 +#define MCS_PANEL_UPDATE 0xf7 +#define MCS_KEY_LEV2 0xfc +#define MCS_RE 0xfe +#define MCS_TOUT2_HSYNC 0xff + +/* Content Adaptive Brightness Control */ +#define DCS_WRITE_CABC 0x55 + +#define MTP_ID_LEN 3 +#define GAMMA_LEVEL_NUM 30 + +#define DEFAULT_VDDM_VAL 0x15 + +struct s6e3fa0 { + struct device *dev; + struct drm_panel panel; + + struct regulator_bulk_data supplies[2]; + struct gpio_desc *reset_gpio; + struct gpio_desc *det_gpio; + struct gpio_desc *te_gpio; + struct cmdmode cm; + + unsigned int power_on_delay; + unsigned int reset_delay; + unsigned int init_delay; + unsigned int width_mm; + unsigned int height_mm; + + unsigned char id; + unsigned char vddm; + unsigned int brightness; +}; + +#define panel_to_s6e3fa0(p) container_of(p, struct s6e3fa0, panel) + +/* VDD Memory Lookup Table contains paires of {ReadValue, WriteValue} */ +static const unsigned char s6e3fa0_vddm_lut[][2] = { + {0x00, 0x0d}, {0x01, 0x0d}, {0x02, 0x0e}, {0x03, 0x0f}, {0x04, 0x10}, + {0x05, 0x11}, {0x06, 0x12}, {0x07, 0x13}, {0x08, 0x14}, {0x09, 0x15}, + {0x0a, 0x16}, {0x0b, 0x17}, {0x0c, 0x18}, {0x0d, 0x19}, {0x0e, 0x1a}, + {0x0f, 0x1b}, {0x10, 0x1c}, {0x11, 0x1d}, {0x12, 0x1e}, {0x13, 0x1f}, + {0x14, 0x20}, {0x15, 0x21}, {0x16, 0x22}, {0x17, 0x23}, {0x18, 0x24}, + {0x19, 0x25}, {0x1a, 0x26}, {0x1b, 0x27}, {0x1c, 0x28}, {0x1d, 0x29}, + {0x1e, 0x2a}, {0x1f, 0x2b}, {0x20, 0x2c}, {0x21, 0x2d}, {0x22, 0x2e}, + {0x23, 0x2f}, {0x24, 0x30}, {0x25, 0x31}, {0x26, 0x32}, {0x27, 0x33}, + {0x28, 0x34}, {0x29, 0x35}, {0x2a, 0x36}, {0x2b, 0x37}, {0x2c, 0x38}, + {0x2d, 0x39}, {0x2e, 0x3a}, {0x2f, 0x3b}, {0x30, 0x3c}, {0x31, 0x3d}, + {0x32, 0x3e}, {0x33, 0x3f}, {0x34, 0x3f}, {0x35, 0x3f}, {0x36, 0x3f}, + {0x37, 0x3f}, {0x38, 0x3f}, {0x39, 0x3f}, {0x3a, 0x3f}, {0x3b, 0x3f}, + {0x3c, 0x3f}, {0x3d, 0x3f}, {0x3e, 0x3f}, {0x3f, 0x3f}, {0x40, 0x0c}, + {0x41, 0x0b}, {0x42, 0x0a}, {0x43, 0x09}, {0x44, 0x08}, {0x45, 0x07}, + {0x46, 0x06}, {0x47, 0x05}, {0x48, 0x04}, {0x49, 0x03}, {0x4a, 0x02}, + {0x4b, 0x01}, {0x4c, 0x40}, {0x4d, 0x41}, {0x4e, 0x42}, {0x4f, 0x43}, + {0x50, 0x44}, {0x51, 0x45}, {0x52, 0x46}, {0x53, 0x47}, {0x54, 0x48}, + {0x55, 0x49}, {0x56, 0x4a}, {0x57, 0x4b}, {0x58, 0x4c}, {0x59, 0x4d}, + {0x5a, 0x4e}, {0x5b, 0x4f}, {0x5c, 0x50}, {0x5d, 0x51}, {0x5e, 0x52}, + {0x5f, 0x53}, {0x60, 0x54}, {0x61, 0x55}, {0x62, 0x56}, {0x63, 0x57}, + {0x64, 0x58}, {0x65, 0x59}, {0x66, 0x5a}, {0x67, 0x5b}, {0x68, 0x5c}, + {0x69, 0x5d}, {0x6a, 0x5e}, {0x6b, 0x5f}, {0x6c, 0x60}, {0x6d, 0x61}, + {0x6e, 0x62}, {0x6f, 0x63}, {0x70, 0x64}, {0x71, 0x65}, {0x72, 0x66}, + {0x73, 0x67}, {0x74, 0x68}, {0x75, 0x69}, {0x76, 0x6a}, {0x77, 0x6b}, + {0x78, 0x6c}, {0x79, 0x6d}, {0x7a, 0x6e}, {0x7b, 0x6f}, {0x7c, 0x70}, + {0x7d, 0x71}, {0x7e, 0x72}, {0x7f, 0x73}, +}; + +static int s6e3fa0_dcs_read(struct s6e3fa0 *ctx, unsigned char cmd, + void *data, size_t len) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + return mipi_dsi_dcs_read(dsi, dsi->channel, cmd, data, len); +} + +static void s6e3fa0_dcs_write(struct s6e3fa0 *ctx, const void *data, size_t len) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + mipi_dsi_dcs_write(dsi, dsi->channel, data, len); +} + +#define s6e3fa0_dcs_write_seq(ctx, seq...) \ +do { \ + const unsigned char d[] = { seq }; \ + BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "too big seq for stack"); \ + s6e3fa0_dcs_write(ctx, d, ARRAY_SIZE(d)); \ +} while (0) + +#define s6e3fa0_dcs_write_seq_static(ctx, seq...) \ +do { \ + static const unsigned char d[] = { seq }; \ + s6e3fa0_dcs_write(ctx, d, ARRAY_SIZE(d)); \ +} while (0) + +static void s6e3fa0_apply_level_1_key(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV1, 0x5a, 0x5a); +} + +static void s6e3fa0_apply_level_2_key(struct s6e3fa0 *ctx, bool on) +{ + if (on) + s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV2, 0x5a, 0x5a); + else + s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV2, 0xa5, 0xa5); +} + +static void s6e3fa0_set_maximum_return_packet_size(struct s6e3fa0 *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 s6e3fa0_read_mtp_id(struct s6e3fa0 *ctx) +{ + unsigned char id[MTP_ID_LEN]; + int ret; + + s6e3fa0_set_maximum_return_packet_size(ctx, MTP_ID_LEN); + ret = s6e3fa0_dcs_read(ctx, MIPI_DCS_GET_DISPLAY_ID, id, MTP_ID_LEN); + if (ret < MTP_ID_LEN || id[0] == 0x00) { + dev_err(ctx->dev, "failed to read id\n"); + return; + } + + dev_info(ctx->dev, "ID: 0x%02x, 0x%02x, 0x%02x\n", id[0], id[1], id[2]); + + ctx->id = id[2]; +} + +static void s6e3fa0_read_vddm(struct s6e3fa0 *ctx) +{ + unsigned char vddm; + int ret; + + s6e3fa0_apply_level_2_key(ctx, true); + s6e3fa0_dcs_write_seq_static(ctx, MCS_GLOBAL_PARAMETER, 0x16); + s6e3fa0_set_maximum_return_packet_size(ctx, 1); + ret = s6e3fa0_dcs_read(ctx, MCS_VDDM, &vddm, 1); + s6e3fa0_apply_level_2_key(ctx, false); + + if (ret < 1 || vddm > 0x7f) { + dev_err(ctx->dev, "failed to read vddm, use default val.\n"); + vddm = DEFAULT_VDDM_VAL; + } + + ctx->vddm = s6e3fa0_vddm_lut[vddm][1]; +} + +static void s6e3fa0_set_pentile_control(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_PENTILE_CTRL, 0x00, 0x02, 0x03, + 0x32, 0x03, 0x44, 0x44, 0xc0, 0x00, + 0x1c, 0x20, 0xe8); +} + +static void s6e3fa0_write_ambient_light_sensor(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_ALS, 0xff, 0xff, 0xff, 0xff); +} + +static void s6e3fa0_set_readability_enhancement(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_RE, 0x00, 0x03, + MCS_GLOBAL_PARAMETER, 0x2b, + MCS_RE, 0xe4); +} + +static void s6e3fa0_set_common_control(struct s6e3fa0 *ctx) +{ + s6e3fa0_set_pentile_control(ctx); + s6e3fa0_write_ambient_light_sensor(ctx); + s6e3fa0_set_readability_enhancement(ctx); +} + +static void s6e3fa0_set_gamma(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_GAMMA_MODE, 0x01, 0x00, 0x01, + 0x00, 0x01, 0x00, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x00, 0x00, 0x00); +} + +static void s6e3fa0_set_amoled_impulse_driving(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_AID, 0x00, 0x06, 0x00, 0x06); +} + +static void s6e3fa0_set_elvss(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_ELVSSOPT, 0x88, 0x0a); +} + +static void s6e3fa0_update_panel(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_PANEL_UPDATE, 0x03); +} + +static void s6e3fa0_write_automatic_current_limit(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, DCS_WRITE_CABC, 0x02); +} + +static void s6e3fa0_set_brightness_control(struct s6e3fa0 *ctx) +{ + s6e3fa0_set_gamma(ctx); + s6e3fa0_set_amoled_impulse_driving(ctx); + s6e3fa0_set_elvss(ctx); + s6e3fa0_update_panel(ctx); + s6e3fa0_write_automatic_current_limit(ctx); +} + +static void s6e3fa0_set_temperature(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MCS_GLOBAL_PARAMETER, 0x05, + MCS_TEMPERATURE_SET, 0x19); +} + +static void s6e3fa0_set_elvss_control(struct s6e3fa0 *ctx) +{ + s6e3fa0_set_temperature(ctx); + s6e3fa0_set_elvss(ctx); +} + +static void s6e3fa0_set_te_on(struct s6e3fa0 *ctx) +{ + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_TEAR_ON, 0x00); +} + +static void s6e3fa0_set_etc_and_write_vddm(struct s6e3fa0 *ctx) +{ + s6e3fa0_apply_level_2_key(ctx, true); + s6e3fa0_dcs_write_seq(ctx, MCS_ERR_FG, 0x0c, 0x04, + MCS_TOUT2_HSYNC, 0x01, + MCS_GLOBAL_PARAMETER, 0x16, + MCS_VDDM, ctx->vddm); + s6e3fa0_apply_level_2_key(ctx, false); +} + +static void s6e3fa0_set_etc_condition(struct s6e3fa0 *ctx) +{ + s6e3fa0_set_te_on(ctx); + s6e3fa0_set_etc_and_write_vddm(ctx); +} + +static void s6e3fa0_panel_init(struct s6e3fa0 *ctx) +{ + s6e3fa0_set_common_control(ctx); + s6e3fa0_set_brightness_control(ctx); + s6e3fa0_set_elvss_control(ctx); + s6e3fa0_set_etc_condition(ctx); + + msleep(ctx->init_delay); +} + +static int s6e3fa0_power_off(struct s6e3fa0 *ctx) +{ + gpiod_set_value(ctx->reset_gpio, 0); + + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); +} + +static int s6e3fa0_power_on(struct s6e3fa0 *ctx) +{ + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret) + return ret; + + msleep(ctx->power_on_delay); + + gpiod_set_value(ctx->reset_gpio, 1); + gpiod_set_value(ctx->reset_gpio, 0); + usleep_range(1000, 2000); + gpiod_set_value(ctx->reset_gpio, 1); + + msleep(ctx->reset_delay); + + return 0; +} + +static void s6e3fa0_set_sequence(struct s6e3fa0 *ctx) +{ + s6e3fa0_apply_level_1_key(ctx); + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE); + msleep(20); + + s6e3fa0_read_mtp_id(ctx); + s6e3fa0_read_vddm(ctx); + + s6e3fa0_panel_init(ctx); + + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON); +} + +static int s6e3fa0_disable(struct drm_panel *panel) +{ + struct s6e3fa0 *ctx = panel_to_s6e3fa0(panel); + + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE); + s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF); + msleep(35); + + return s6e3fa0_power_off(ctx); +} + +static int s6e3fa0_enable(struct drm_panel *panel) +{ + struct s6e3fa0 *ctx = panel_to_s6e3fa0(panel); + int ret; + + ret = s6e3fa0_power_on(ctx); + if (ret) + return ret; + + s6e3fa0_set_sequence(ctx); + + return ret; +} + +static int s6e3fa0_get_modes(struct drm_panel *panel) +{ + struct drm_connector *connector = panel->connector; + struct s6e3fa0 *ctx = panel_to_s6e3fa0(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_cmdmode(&ctx->cm, 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 s6e3fa0_drm_funcs = { + .disable = s6e3fa0_disable, + .enable = s6e3fa0_enable, + .get_modes = s6e3fa0_get_modes, +}; + +static int s6e3fa0_parse_dt(struct s6e3fa0 *ctx) +{ + struct device *dev = ctx->dev; + int ret; + + ret = of_get_cmdmode(dev->of_node, &ctx->cm, 0); + if (ret) { + dev_err(dev, "failed to get command mode: %d\n", ret); + return ret; + } + + return ret; +} + +irqreturn_t s6e3fa0_det_interrupt(int irq, void *dev_id) +{ + /* TODO */ + return IRQ_HANDLED; +} + +irqreturn_t s6e3fa0_te_interrupt(int irq, void *dev_id) +{ + struct s6e3fa0 *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 s6e3fa0_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct s6e3fa0 *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(struct s6e3fa0), GFP_KERNEL); + if (!ctx) { + dev_err(dev, "failed to allocate s6e3fa0 structure.\n"); + return -ENOMEM; + } + + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->dev = dev; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + + ret = s6e3fa0_parse_dt(ctx); + if (ret) + 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) { + dev_err(dev, "failed to get regulators: %d\n", ret); + return ret; + } + + ctx->reset_gpio = devm_gpiod_get(dev, "reset"); + if (IS_ERR(ctx->reset_gpio)) { + dev_err(dev, "failed to get reset gpio: %ld\n", + PTR_ERR(ctx->reset_gpio)); + return PTR_ERR(ctx->reset_gpio); + } + ret = gpiod_direction_output(ctx->reset_gpio, 1); + if (ret < 0) { + dev_err(dev, "failed to configure reset gpio: %d\n", ret); + return ret; + } + + ctx->det_gpio = devm_gpiod_get(dev, "det"); + if (IS_ERR(ctx->det_gpio)) { + dev_err(dev, "failed to get det gpio: %ld\n", + PTR_ERR(ctx->det_gpio)); + return PTR_ERR(ctx->det_gpio); + } + ret = gpiod_direction_input(ctx->det_gpio); + if (ret < 0) { + dev_err(dev, "failed to configure det gpio: %d\n", ret); + return ret; + } + ret = devm_request_irq(dev, gpiod_to_irq(ctx->det_gpio), + s6e3fa0_det_interrupt, + IRQF_TRIGGER_FALLING, + "oled-det", ctx); + if (ret) { + dev_err(dev, "failed to request det irq: %d\n", ret); + return ret; + } + + ctx->te_gpio = devm_gpiod_get(dev, "te"); + if (IS_ERR(ctx->te_gpio)) { + dev_err(dev, "failed to get te gpio: %ld\n", + PTR_ERR(ctx->te_gpio)); + return PTR_ERR(ctx->te_gpio); + } + ret = gpiod_direction_input(ctx->te_gpio); + if (ret < 0) { + dev_err(dev, "failed to configure te gpio: %d\n", ret); + return ret; + } + ret = devm_request_irq(dev, gpiod_to_irq(ctx->te_gpio), + s6e3fa0_te_interrupt, + IRQF_TRIGGER_RISING, + "TE", ctx); + if (ret) { + dev_err(dev, "failed to request det irq: %d\n", ret); + return ret; + } + + ctx->power_on_delay = 10; + ctx->reset_delay = 5; + ctx->init_delay = 120; + ctx->width_mm = 71; + ctx->height_mm = 126; + + ctx->brightness = GAMMA_LEVEL_NUM - 1; + + drm_panel_init(&ctx->panel); + ctx->panel.dev = dev; + ctx->panel.funcs = &s6e3fa0_drm_funcs; + + ret = drm_panel_add(&ctx->panel); + if (ret) + return ret; + + ret = mipi_dsi_attach(dsi); + if (ret) + drm_panel_remove(&ctx->panel); + + return ret; +} + +static int s6e3fa0_remove(struct mipi_dsi_device *dsi) +{ + struct s6e3fa0 *ctx = mipi_dsi_get_drvdata(dsi); + + mipi_dsi_detach(dsi); + drm_panel_remove(&ctx->panel); + + return 0; +} + +static struct of_device_id s6e3fa0_of_match[] = { + { .compatible = "samsung,s6e3fa0" }, + { } +}; +MODULE_DEVICE_TABLE(of, s6e3fa0_of_match); + +static struct mipi_dsi_driver s6e3fa0_driver = { + .probe = s6e3fa0_probe, + .remove = s6e3fa0_remove, + .driver = { + .name = "panel_s6e3fa0", + .owner = THIS_MODULE, + .of_match_table = s6e3fa0_of_match, + }, +}; +module_mipi_dsi_driver(s6e3fa0_driver); + +MODULE_AUTHOR("YoungJun Cho <yj44.cho@samsung.com>"); +MODULE_DESCRIPTION("MIPI-DSI based s6e3fa0 AMOLED LCD Panel Driver"); +MODULE_LICENSE("GPL v2");