| Message ID | 1421653953-8187-2-git-send-email-human.hwang@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Jan 19, 2015 at 04:52:32PM +0900, Hyungwon Hwang wrote: > From: Inki Dae <inki.dae@samsung.com> > > This patch adds MIPI-DSI based S6E63J0X03 AMOLED LCD panel driver > which uses mipi_dsi bus to communicate with panel. The panel has > 320×320 resolution in 1.63-inch physical panel. This panel is used in > Samsung Galaxy Gear 2. > > Signed-off-by: Inki Dae <inki.dae@samsung.com> > Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> > --- > Changes for v2: > - Change the gamma table to 2-dimensional array > - Change the way to make index for brightness > - Make command functions to an array so that it can be called simply > - Change command id for reading device ID > - Change the way to handle the error condition > - Remove power variable, and use the same name variable in bl_dev > - Add the state FB_BLANK_NORMAL to represent the state which the panel > is working but blanked > - Miscellaneous changes to increase the readability and follow the > coding-style standard > Changes for v3: > - Add DT binding documentation > - Add the code getting DT properties of 'panel-width-mm' and 'panel-height-mm' > - Remove the code getting unnecessary DT properties flip-* > .../bindings/panel/samsung,s6e63j0x03.txt | 55 +++ > drivers/gpu/drm/panel/Kconfig | 6 + > drivers/gpu/drm/panel/Makefile | 1 + > drivers/gpu/drm/panel/panel-s6e63j0x03.c | 546 +++++++++++++++++++++ > 4 files changed, 608 insertions(+) > create mode 100644 Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt > create mode 100644 drivers/gpu/drm/panel/panel-s6e63j0x03.c I have pretty much the same comments as for the SA6E3HA2 panel driver that I reviewed earlier. Thierry
Please ignore this mail. I didn't know that "git send *" includes all files in the subdirectories. I am very sorry for disturbing you. Best regards, Hyungwon Hwang On Fri, 12 Jun 2015 21:59:17 +0900 Hyungwon Hwang <human.hwang@samsung.com> wrote: > From: Inki Dae <inki.dae@samsung.com> > > This patch adds MIPI-DSI based S6E63J0X03 AMOLED LCD panel driver > which uses mipi_dsi bus to communicate with panel. The panel has > 320×320 resolution in 1.63-inch physical panel. This panel is used in > Samsung Galaxy Gear 2. > > Signed-off-by: Inki Dae <inki.dae@samsung.com> > Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> > > --- > Changes for v2: > - Change the gamma table to 2-dimensional array > - Change the way to make index for brightness > - Make command functions to an array so that it can be called simply > - Change command id for reading device ID > - Change the way to handle the error condition > - Remove power variable, and use the same name variable in bl_dev > - Add the state FB_BLANK_NORMAL to represent the state which the panel > is working but blanked > - Miscellaneous changes to increase the readability and follow the > coding-style standard > Changes for v3: > - Add DT binding documentation > - Add the code getting DT properties of 'panel-width-mm' and > 'panel-height-mm' > - Remove the code getting unnecessary DT properties flip-* > .../bindings/panel/samsung,s6e63j0x03.txt | 55 +++ > drivers/gpu/drm/panel/Kconfig | 6 + > drivers/gpu/drm/panel/Makefile | 1 + > drivers/gpu/drm/panel/panel-s6e63j0x03.c | 546 > +++++++++++++++++++++ 4 files changed, 608 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt create > mode 100644 drivers/gpu/drm/panel/panel-s6e63j0x03.c > > -- > 1.9.1 > > diff --git > a/Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt > b/Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt new > file mode 100644 index 0000000..f8215e4 --- /dev/null > +++ b/Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt > @@ -0,0 +1,55 @@ > +Samsung S6E63J0X03 1.63" 320x320 TFT LCD panel > + > +Required properties: > + - compatible: "samsung,s6e63j0x03" > + - reg: the virtual channel number of a DSI peripheral > + - vdd3-supply: core voltage supply > + - vci-supply: voltage supply for analog circuits > + - reset-gpios: a GPIO spec for the reset pin > + - te-gpios: a GPIO spec for the tearing effect synchronization > signal gpio pin + > +Optional properties: > + - display-timings: timings for the connected panel as described by > [1] > + - power-on-delay: delay after turning regulators on [ms] > + - power-off-delay: delay after turning regulators off [ms] > + - reset-delay: delay after reset sequence [ms] > + - panel-width-mm: physical panel width [mm] > + - panel-height-mm: physical panel height [mm] > + > +The device node can contain one 'port' child node with one child > +'endpoint' node, according to the bindings defined in [2]. This > +node should describe panel's video bus. > + > +[1]: Documentation/devicetree/bindings/video/display-timing.txt > +[2]: Documentation/devicetree/bindings/media/video-interfaces.txt > + > +Example: > + > +panel@0 { > + compatible = "samsung,s6e63j0x03"; > + reg = <0>; > + vdd3-supply = <&ldo16_reg>; > + vci-supply = <&ldo20_reg>; > + reset-gpios = <&gpe0 1 0>; > + te-gpios = <&gpx0 6 0>; > + power-on-delay= <30>; > + power-off-delay= <120>; > + reset-delay = <5>; > + init-delay = <100>; > + panel-width-mm = <29>; > + panel-height-mm = <29>; > + > + display-timings { > + timing-0 { > + clock-frequency = <0>; > + hactive = <320>; > + vactive = <320>; > + hfront-porch = <1>; > + hback-porch = <1>; > + hsync-len = <1>; > + vfront-porch = <150>; > + vback-porch = <1>; > + vsync-len = <2>; > + }; > + }; > +}; > diff --git a/drivers/gpu/drm/panel/Kconfig > b/drivers/gpu/drm/panel/Kconfig index 3df9b9b..8fa7610 100644 > --- a/drivers/gpu/drm/panel/Kconfig > +++ b/drivers/gpu/drm/panel/Kconfig > @@ -46,4 +46,10 @@ config DRM_PANEL_S6E3HA2 > select DRM_MIPI_DSI > select VIDEOMODE_HELPERS > > +config DRM_PANEL_S6E63J0X03 > + tristate "S6E63J0X03 DSI video mode panel" > + depends on OF > + select DRM_MIPI_DSI > + select VIDEOMODE_HELPERS > + > endmenu > diff --git a/drivers/gpu/drm/panel/Makefile > b/drivers/gpu/drm/panel/Makefile index 16ff312..9054da1 100644 > --- a/drivers/gpu/drm/panel/Makefile > +++ b/drivers/gpu/drm/panel/Makefile > @@ -3,3 +3,4 @@ obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o > obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o > obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += > panel-sharp-lq101r1sx01.o obj-$(CONFIG_DRM_PANEL_S6E3HA2) += > panel-s6e3ha2.o +obj-$(CONFIG_DRM_PANEL_S6E63J0X03) += > panel-s6e63j0x03.o diff --git > a/drivers/gpu/drm/panel/panel-s6e63j0x03.c > b/drivers/gpu/drm/panel/panel-s6e63j0x03.c new file mode 100644 index > 0000000..51cf1f6 --- /dev/null > +++ b/drivers/gpu/drm/panel/panel-s6e63j0x03.c > @@ -0,0 +1,546 @@ > +/* > + * 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 <linux/backlight.h> > + > +#include <video/mipi_display.h> > +#include <video/of_videomode.h> > +#include <video/videomode.h> > + > +#define READ_ID1 0xDA > +#define READ_ID2 0xDB > +#define READ_ID3 0xDC > + > +#define MCS_LEVEL2_KEY 0xf0 > +#define MCS_MTP_KEY 0xf1 > +#define MCS_MTP_SET3 0xd4 > + > +#define MIN_BRIGHTNESS 0 > +#define MAX_BRIGHTNESS 100 > +#define DEFAULT_BRIGHTNESS 80 > + > +#define GAMMA_LEVEL_NUM 30 > +#define NUM_GAMMA_STEPS 9 > +#define GAMMA_CMD_CNT 28 > + > +struct s6e63j0x03 { > + struct device *dev; > + struct drm_panel panel; > + struct backlight_device *bl_dev; > + > + struct regulator_bulk_data supplies[2]; > + struct gpio_desc *reset_gpio; > + u32 power_on_delay; > + u32 power_off_delay; > + u32 reset_delay; > + u32 init_delay; > + struct videomode vm; > + unsigned int width_mm; > + unsigned int height_mm; > +}; > + > +static const unsigned char gamma_tbl[NUM_GAMMA_STEPS][GAMMA_CMD_CNT] > = { > + { /* Gamma 10 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x7f, 0x7f, 0x7f, 0x52, 0x6b, > 0x6f, 0x26, > + 0x28, 0x2d, 0x28, 0x26, 0x27, 0x33, 0x34, 0x32, > 0x36, 0x36, > + 0x35, 0x00, 0xab, 0x00, 0xae, 0x00, 0xbf > + }, > + { /* gamma 30 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x70, 0x7f, 0x7f, 0x4e, 0x64, > 0x69, 0x26, > + 0x27, 0x2a, 0x28, 0x29, 0x27, 0x31, 0x32, 0x31, > 0x35, 0x34, > + 0x35, 0x00, 0xc4, 0x00, 0xca, 0x00, 0xdc > + }, > + { /* gamma 60 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x65, 0x7b, 0x7d, 0x5f, 0x67, > 0x68, 0x2a, > + 0x28, 0x29, 0x28, 0x2a, 0x27, 0x31, 0x2f, 0x30, > 0x34, 0x33, > + 0x34, 0x00, 0xd9, 0x00, 0xe4, 0x00, 0xf5 > + }, > + { /* gamma 90 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x4d, 0x6f, 0x71, 0x67, 0x6a, > 0x6c, 0x29, > + 0x28, 0x28, 0x28, 0x29, 0x27, 0x30, 0x2e, 0x30, > 0x32, 0x31, > + 0x31, 0x00, 0xea, 0x00, 0xf6, 0x01, 0x09 > + }, > + { /* gamma 120 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x3d, 0x66, 0x68, 0x69, 0x69, > 0x69, 0x28, > + 0x28, 0x27, 0x28, 0x28, 0x27, 0x30, 0x2e, 0x2f, > 0x31, 0x31, > + 0x30, 0x00, 0xf9, 0x01, 0x05, 0x01, 0x1b > + }, > + { /* gamma 150 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x31, 0x51, 0x53, 0x66, 0x66, > 0x67, 0x28, > + 0x29, 0x27, 0x28, 0x27, 0x27, 0x2e, 0x2d, 0x2e, > 0x31, 0x31, > + 0x30, 0x01, 0x04, 0x01, 0x11, 0x01, 0x29 > + }, > + { /* gamma 200 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x2f, 0x4f, 0x51, 0x67, 0x65, > 0x65, 0x29, > + 0x2a, 0x28, 0x27, 0x25, 0x26, 0x2d, 0x2c, 0x2c, > 0x30, 0x30, > + 0x30, 0x01, 0x14, 0x01, 0x23, 0x01, 0x3b > + }, > + { /* gamma 240 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x2c, 0x4d, 0x50, 0x65, 0x63, > 0x64, 0x2a, > + 0x2c, 0x29, 0x26, 0x24, 0x25, 0x2c, 0x2b, 0x2b, > 0x30, 0x30, > + 0x30, 0x01, 0x1e, 0x01, 0x2f, 0x01, 0x47 > + }, > + { /* gamma 300 */ > + MCS_MTP_SET3, > + 0x00, 0x00, 0x00, 0x38, 0x61, 0x64, 0x65, 0x63, > 0x64, 0x28, > + 0x2a, 0x27, 0x26, 0x23, 0x25, 0x2b, 0x2b, 0x2a, > 0x30, 0x2f, > + 0x30, 0x01, 0x2d, 0x01, 0x3f, 0x01, 0x57 > + } > +}; > + > +static const unsigned char prepare_cmds1[][15] = { > + { 3, 0xf2, 0x1c, 0x28 }, /* porch_adjustment > */ > + { 4, 0xb5, 0x00, 0x02, 0x00 }, /* frame_freq > */ > + { 5, 0x2a, 0x00, 0x14, 0x01, 0x53 }, /* > mem_addr_set_0 */ > + { 5, 0x2b, 0x00, 0x00, 0x01, 0x3f }, /* > mem_addr_set_1 */ > + { 14, 0xf8, 0x08, 0x08, 0x08, 0x17, /* > ltps_timming_set_0_60hz */ > + 0x00, 0x2a, 0x02, 0x26, > + 0x00, 0x00, 0x02, 0x00, 0x00 }, > + { 2, 0xf7, 0x02 }, /* > ltps_timming_set_1 */ > + { 2, 0xb0, 0x01 }, /* > param_pos_te_edge */ > + { 2, 0xe2, 0x0f }, /* te_rising_edge > */ > + { 2, 0xb0, 0x00 }, /* > param_pos_default */ > + { 1, MIPI_DCS_EXIT_SLEEP_MODE }, > +}; > + > +static const unsigned char prepare_cmds2[][4] = { > + { 3, 0xb1, 0x00, 0x09 }, /* elvss_cond */ > + { 2, 0x36, 0x40 }, /* set_pos */ > + { 2, 0x51, 0xff }, /* > white_brightness_default */ > + { 2, 0x53, 0x20 }, /* white_ctrl */ > + { 2, 0x55, 0x00 }, /* acl_off */ > + { 1, MIPI_DCS_SET_TEAR_ON }, > +}; > + > + > +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 u8 *seq, const > unsigned char len) +{ > + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); > + > + return mipi_dsi_dcs_write(dsi, seq, len); > +} > + > +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 > *ctx) +{ > + unsigned char seq[] = { MCS_LEVEL2_KEY, 0x5a, 0x5a }; > + > + return s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); > +} > + > +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, > bool on) +{ > + unsigned char seq1[3] = { MCS_MTP_KEY, 0x5a, 0x5a }; > + unsigned char seq2[3] = { MCS_MTP_KEY, 0xa5, 0xa5 }; > + > + return s6e63j0x03_dcs_write_seq(ctx, on ? seq1 : seq2, > + ARRAY_SIZE(seq1)); > +} > + > +static int s6e63j0x03_read_mtp_id(struct s6e63j0x03 *ctx) > +{ > + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); > + unsigned char cmds[3] = { READ_ID1, READ_ID2, READ_ID3 }; > + unsigned char id[3]; > + int ret; > + int i; > + > + for (i = 0; i < 3; i++) { > + ret = mipi_dsi_dcs_read(dsi, cmds[i], &id[i], 1); > + > + if (ret < 0) > + return ret; > + } > + > + dev_info(ctx->dev, "ID: 0x%02x, 0x%02x, 0x%02x\n", id[0], > id[1], id[2]); + > + return 0; > +} > + > +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; > + > + msleep(ctx->power_on_delay); > + > + gpiod_set_value(ctx->reset_gpio, 0); > + usleep_range(1000, 2000); > + gpiod_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; > + > + gpiod_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_get_brightness(struct backlight_device *bl_dev) > +{ > + return bl_dev->props.brightness; > +} > + > +static unsigned int s6e63j0x03_get_brightness_index(unsigned int > brightness) +{ > + unsigned int index; > + > + index = brightness / (MAX_BRIGHTNESS / NUM_GAMMA_STEPS); > + > + if (index >= NUM_GAMMA_STEPS) > + index = NUM_GAMMA_STEPS - 1; > + > + return index; > +} > + > +static int s6e63j0x03_update_gamma(struct s6e63j0x03 *ctx, > + unsigned int brightness) > +{ > + struct backlight_device *bl_dev = ctx->bl_dev; > + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); > + unsigned int index = > s6e63j0x03_get_brightness_index(brightness); > + int ret; > + > + ret = s6e63j0x03_apply_mtp_key(ctx, true); > + if (ret < 0) > + return ret; > + > + ret = mipi_dsi_dcs_write(dsi, gamma_tbl[index], > GAMMA_CMD_CNT); > + if (ret < 0) > + return ret; > + > + ret = s6e63j0x03_apply_mtp_key(ctx, false); > + if (ret < 0) > + return ret; > + > + bl_dev->props.brightness = brightness; > + > + return 0; > +} > + > +static int s6e63j0x03_set_brightness(struct backlight_device *bl_dev) > +{ > + struct s6e63j0x03 *ctx = (struct s6e63j0x03 > *)bl_get_data(bl_dev); > + unsigned int brightness = bl_dev->props.brightness; > + int ret; > + > + if (brightness < MIN_BRIGHTNESS || > + brightness > bl_dev->props.max_brightness) { > + dev_err(ctx->dev, "Invalid brightness: %u\n", > brightness); > + return -EINVAL; > + } > + > + if (bl_dev->props.power > FB_BLANK_NORMAL) { > + dev_err(ctx->dev, > + "panel must be at least in fb blank normal > state\n"); > + return -EPERM; > + } > + > + ret = s6e63j0x03_update_gamma(ctx, brightness); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static const struct backlight_ops s6e63j0x03_bl_ops = { > + .get_brightness = s6e63j0x03_get_brightness, > + .update_status = s6e63j0x03_set_brightness, > +}; > + > +static int s6e63j0x03_disable(struct drm_panel *panel) > +{ > + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); > + struct backlight_device *bl_dev = ctx->bl_dev; > + u8 seq[] = { MIPI_DCS_SET_DISPLAY_OFF }; > + int ret; > + > + ret = s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); > + if (ret > 0) > + bl_dev->props.power = FB_BLANK_NORMAL; > + > + return 0; > +} > + > +static int s6e63j0x03_unprepare(struct drm_panel *panel) > +{ > + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); > + struct backlight_device *bl_dev = ctx->bl_dev; > + u8 seq[] = { MIPI_DCS_ENTER_SLEEP_MODE }; > + int ret; > + > + ret = s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); > + if (ret < 0) > + return ret; > + > + msleep(ctx->power_off_delay); > + > + ret = s6e63j0x03_power_off(ctx); > + if (ret < 0) > + return ret; > + > + bl_dev->props.power = FB_BLANK_POWERDOWN; > + > + return 0; > +} > + > +static int s6e63j0x03_prepare(struct drm_panel *panel) > +{ > + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); > + struct backlight_device *bl_dev = ctx->bl_dev; > + int ret; > + int i; > + > + ret = s6e63j0x03_power_on(ctx); > + if (ret < 0) > + return ret; > + > + ret = s6e63j0x03_enable_lv2_command(ctx); > + if (ret < 0) > + return ret; > + > + ret = s6e63j0x03_apply_mtp_key(ctx, true); > + if (ret < 0) > + return ret; > + > + ret = s6e63j0x03_read_mtp_id(ctx); > + if (ret < 0) > + return ret; > + > + for (i = 0; i < ARRAY_SIZE(prepare_cmds1); i++) { > + ret = s6e63j0x03_dcs_write_seq(ctx, > &prepare_cmds1[i][1], > + > prepare_cmds1[i][0]); > + if (ret < 0) > + return ret; > + } > + > + msleep(120); > + > + for (i = 0; i < ARRAY_SIZE(prepare_cmds2); i++) { > + ret = s6e63j0x03_dcs_write_seq(ctx, > &prepare_cmds2[i][1], > + > prepare_cmds2[i][0]); > + if (ret < 0) > + return ret; > + } > + > + ret = s6e63j0x03_apply_mtp_key(ctx, false); > + if (ret < 0) > + return ret; > + > + bl_dev->props.power = FB_BLANK_NORMAL; > + > + return 0; > +} > + > +static int s6e63j0x03_enable(struct drm_panel *panel) > +{ > + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); > + struct backlight_device *bl_dev = ctx->bl_dev; > + u8 seq[] = { MIPI_DCS_SET_DISPLAY_ON }; > + int ret; > + > + ret = s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); > + if (ret > 0) > + bl_dev->props.power = FB_BLANK_UNBLANK; > + > + return 0; > +} > + > +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_funcs = { > + .disable = s6e63j0x03_disable, > + .unprepare = s6e63j0x03_unprepare, > + .prepare = s6e63j0x03_prepare, > + .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); > + of_property_read_u32(np, "panel-width-mm", &ctx->width_mm); > + of_property_read_u32(np, "panel-height-mm", &ctx->height_mm); > + > + return ret; > +} > + > +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 = devm_gpiod_get(dev, "reset", > GPIOD_OUT_HIGH); > + if (IS_ERR(ctx->reset_gpio)) { > + dev_err(dev, "cannot get reset-gpio: %ld\n", > + PTR_ERR(ctx->reset_gpio)); > + return PTR_ERR(ctx->reset_gpio); > + } > + > + drm_panel_init(&ctx->panel); > + ctx->panel.dev = dev; > + ctx->panel.funcs = &s6e63j0x03_funcs; > + > + ctx->bl_dev = backlight_device_register("s6e63j0x03", dev, > ctx, > + &s6e63j0x03_bl_ops, > NULL); > + if (IS_ERR(ctx->bl_dev)) { > + dev_err(dev, "failed to register backlight > device\n"); > + return PTR_ERR(ctx->bl_dev); > + } > + > + ctx->bl_dev->props.max_brightness = MAX_BRIGHTNESS; > + ctx->bl_dev->props.brightness = DEFAULT_BRIGHTNESS; > + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN; > + > + > + ret = drm_panel_add(&ctx->panel); > + if (ret < 0) > + goto unregister_backlight; > + > + ret = mipi_dsi_attach(dsi); > + if (ret < 0) > + goto remove_panel; > + > + return ret; > + > +remove_panel: > + drm_panel_remove(&ctx->panel); > + > +unregister_backlight: > + backlight_device_unregister(ctx->bl_dev); > + > + 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); > + > + backlight_device_unregister(ctx->bl_dev); > + > + return 0; > +} > + > +static const 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", > + .of_match_table = s6e63j0x03_of_match, > + }, > +}; > +module_mipi_dsi_driver(s6e63j0x03_driver); > + > +MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); > +MODULE_DESCRIPTION("MIPI-DSI based s6e8aa0 AMOLED LCD Panel Driver"); > +MODULE_LICENSE("GPL v2");
diff --git a/Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt b/Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt new file mode 100644 index 0000000..f8215e4 --- /dev/null +++ b/Documentation/devicetree/bindings/panel/samsung,s6e63j0x03.txt @@ -0,0 +1,55 @@ +Samsung S6E63J0X03 1.63" 320x320 TFT LCD panel + +Required properties: + - compatible: "samsung,s6e63j0x03" + - reg: the virtual channel number of a DSI peripheral + - vdd3-supply: core voltage supply + - vci-supply: voltage supply for analog circuits + - reset-gpios: a GPIO spec for the reset pin + - te-gpios: a GPIO spec for the tearing effect synchronization signal gpio pin + +Optional properties: + - display-timings: timings for the connected panel as described by [1] + - power-on-delay: delay after turning regulators on [ms] + - power-off-delay: delay after turning regulators off [ms] + - reset-delay: delay after reset sequence [ms] + - panel-width-mm: physical panel width [mm] + - panel-height-mm: physical panel height [mm] + +The device node can contain one 'port' child node with one child +'endpoint' node, according to the bindings defined in [2]. This +node should describe panel's video bus. + +[1]: Documentation/devicetree/bindings/video/display-timing.txt +[2]: Documentation/devicetree/bindings/media/video-interfaces.txt + +Example: + +panel@0 { + compatible = "samsung,s6e63j0x03"; + reg = <0>; + vdd3-supply = <&ldo16_reg>; + vci-supply = <&ldo20_reg>; + reset-gpios = <&gpe0 1 0>; + te-gpios = <&gpx0 6 0>; + power-on-delay= <30>; + power-off-delay= <120>; + reset-delay = <5>; + init-delay = <100>; + panel-width-mm = <29>; + panel-height-mm = <29>; + + display-timings { + timing-0 { + clock-frequency = <0>; + hactive = <320>; + vactive = <320>; + hfront-porch = <1>; + hback-porch = <1>; + hsync-len = <1>; + vfront-porch = <150>; + vback-porch = <1>; + vsync-len = <2>; + }; + }; +}; diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 3df9b9b..8fa7610 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -46,4 +46,10 @@ config DRM_PANEL_S6E3HA2 select DRM_MIPI_DSI select VIDEOMODE_HELPERS +config DRM_PANEL_S6E63J0X03 + tristate "S6E63J0X03 DSI video mode panel" + depends on OF + select DRM_MIPI_DSI + select VIDEOMODE_HELPERS + endmenu diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 16ff312..9054da1 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o obj-$(CONFIG_DRM_PANEL_S6E3HA2) += panel-s6e3ha2.o +obj-$(CONFIG_DRM_PANEL_S6E63J0X03) += panel-s6e63j0x03.o diff --git a/drivers/gpu/drm/panel/panel-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-s6e63j0x03.c new file mode 100644 index 0000000..51cf1f6 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-s6e63j0x03.c @@ -0,0 +1,546 @@ +/* + * 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 <linux/backlight.h> + +#include <video/mipi_display.h> +#include <video/of_videomode.h> +#include <video/videomode.h> + +#define READ_ID1 0xDA +#define READ_ID2 0xDB +#define READ_ID3 0xDC + +#define MCS_LEVEL2_KEY 0xf0 +#define MCS_MTP_KEY 0xf1 +#define MCS_MTP_SET3 0xd4 + +#define MIN_BRIGHTNESS 0 +#define MAX_BRIGHTNESS 100 +#define DEFAULT_BRIGHTNESS 80 + +#define GAMMA_LEVEL_NUM 30 +#define NUM_GAMMA_STEPS 9 +#define GAMMA_CMD_CNT 28 + +struct s6e63j0x03 { + struct device *dev; + struct drm_panel panel; + struct backlight_device *bl_dev; + + struct regulator_bulk_data supplies[2]; + struct gpio_desc *reset_gpio; + u32 power_on_delay; + u32 power_off_delay; + u32 reset_delay; + u32 init_delay; + struct videomode vm; + unsigned int width_mm; + unsigned int height_mm; +}; + +static const unsigned char gamma_tbl[NUM_GAMMA_STEPS][GAMMA_CMD_CNT] = { + { /* Gamma 10 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x7f, 0x7f, 0x7f, 0x52, 0x6b, 0x6f, 0x26, + 0x28, 0x2d, 0x28, 0x26, 0x27, 0x33, 0x34, 0x32, 0x36, 0x36, + 0x35, 0x00, 0xab, 0x00, 0xae, 0x00, 0xbf + }, + { /* gamma 30 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x70, 0x7f, 0x7f, 0x4e, 0x64, 0x69, 0x26, + 0x27, 0x2a, 0x28, 0x29, 0x27, 0x31, 0x32, 0x31, 0x35, 0x34, + 0x35, 0x00, 0xc4, 0x00, 0xca, 0x00, 0xdc + }, + { /* gamma 60 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x65, 0x7b, 0x7d, 0x5f, 0x67, 0x68, 0x2a, + 0x28, 0x29, 0x28, 0x2a, 0x27, 0x31, 0x2f, 0x30, 0x34, 0x33, + 0x34, 0x00, 0xd9, 0x00, 0xe4, 0x00, 0xf5 + }, + { /* gamma 90 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x4d, 0x6f, 0x71, 0x67, 0x6a, 0x6c, 0x29, + 0x28, 0x28, 0x28, 0x29, 0x27, 0x30, 0x2e, 0x30, 0x32, 0x31, + 0x31, 0x00, 0xea, 0x00, 0xf6, 0x01, 0x09 + }, + { /* gamma 120 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x3d, 0x66, 0x68, 0x69, 0x69, 0x69, 0x28, + 0x28, 0x27, 0x28, 0x28, 0x27, 0x30, 0x2e, 0x2f, 0x31, 0x31, + 0x30, 0x00, 0xf9, 0x01, 0x05, 0x01, 0x1b + }, + { /* gamma 150 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x31, 0x51, 0x53, 0x66, 0x66, 0x67, 0x28, + 0x29, 0x27, 0x28, 0x27, 0x27, 0x2e, 0x2d, 0x2e, 0x31, 0x31, + 0x30, 0x01, 0x04, 0x01, 0x11, 0x01, 0x29 + }, + { /* gamma 200 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x2f, 0x4f, 0x51, 0x67, 0x65, 0x65, 0x29, + 0x2a, 0x28, 0x27, 0x25, 0x26, 0x2d, 0x2c, 0x2c, 0x30, 0x30, + 0x30, 0x01, 0x14, 0x01, 0x23, 0x01, 0x3b + }, + { /* gamma 240 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x2c, 0x4d, 0x50, 0x65, 0x63, 0x64, 0x2a, + 0x2c, 0x29, 0x26, 0x24, 0x25, 0x2c, 0x2b, 0x2b, 0x30, 0x30, + 0x30, 0x01, 0x1e, 0x01, 0x2f, 0x01, 0x47 + }, + { /* gamma 300 */ + MCS_MTP_SET3, + 0x00, 0x00, 0x00, 0x38, 0x61, 0x64, 0x65, 0x63, 0x64, 0x28, + 0x2a, 0x27, 0x26, 0x23, 0x25, 0x2b, 0x2b, 0x2a, 0x30, 0x2f, + 0x30, 0x01, 0x2d, 0x01, 0x3f, 0x01, 0x57 + } +}; + +static const unsigned char prepare_cmds1[][15] = { + { 3, 0xf2, 0x1c, 0x28 }, /* porch_adjustment */ + { 4, 0xb5, 0x00, 0x02, 0x00 }, /* frame_freq */ + { 5, 0x2a, 0x00, 0x14, 0x01, 0x53 }, /* mem_addr_set_0 */ + { 5, 0x2b, 0x00, 0x00, 0x01, 0x3f }, /* mem_addr_set_1 */ + { 14, 0xf8, 0x08, 0x08, 0x08, 0x17, /* ltps_timming_set_0_60hz */ + 0x00, 0x2a, 0x02, 0x26, + 0x00, 0x00, 0x02, 0x00, 0x00 }, + { 2, 0xf7, 0x02 }, /* ltps_timming_set_1 */ + { 2, 0xb0, 0x01 }, /* param_pos_te_edge */ + { 2, 0xe2, 0x0f }, /* te_rising_edge */ + { 2, 0xb0, 0x00 }, /* param_pos_default */ + { 1, MIPI_DCS_EXIT_SLEEP_MODE }, +}; + +static const unsigned char prepare_cmds2[][4] = { + { 3, 0xb1, 0x00, 0x09 }, /* elvss_cond */ + { 2, 0x36, 0x40 }, /* set_pos */ + { 2, 0x51, 0xff }, /* white_brightness_default */ + { 2, 0x53, 0x20 }, /* white_ctrl */ + { 2, 0x55, 0x00 }, /* acl_off */ + { 1, MIPI_DCS_SET_TEAR_ON }, +}; + + +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 u8 *seq, const unsigned char len) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + return mipi_dsi_dcs_write(dsi, seq, len); +} + +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx) +{ + unsigned char seq[] = { MCS_LEVEL2_KEY, 0x5a, 0x5a }; + + return s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); +} + +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on) +{ + unsigned char seq1[3] = { MCS_MTP_KEY, 0x5a, 0x5a }; + unsigned char seq2[3] = { MCS_MTP_KEY, 0xa5, 0xa5 }; + + return s6e63j0x03_dcs_write_seq(ctx, on ? seq1 : seq2, + ARRAY_SIZE(seq1)); +} + +static int s6e63j0x03_read_mtp_id(struct s6e63j0x03 *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + unsigned char cmds[3] = { READ_ID1, READ_ID2, READ_ID3 }; + unsigned char id[3]; + int ret; + int i; + + for (i = 0; i < 3; i++) { + ret = mipi_dsi_dcs_read(dsi, cmds[i], &id[i], 1); + + if (ret < 0) + return ret; + } + + dev_info(ctx->dev, "ID: 0x%02x, 0x%02x, 0x%02x\n", id[0], id[1], id[2]); + + return 0; +} + +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; + + msleep(ctx->power_on_delay); + + gpiod_set_value(ctx->reset_gpio, 0); + usleep_range(1000, 2000); + gpiod_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; + + gpiod_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_get_brightness(struct backlight_device *bl_dev) +{ + return bl_dev->props.brightness; +} + +static unsigned int s6e63j0x03_get_brightness_index(unsigned int brightness) +{ + unsigned int index; + + index = brightness / (MAX_BRIGHTNESS / NUM_GAMMA_STEPS); + + if (index >= NUM_GAMMA_STEPS) + index = NUM_GAMMA_STEPS - 1; + + return index; +} + +static int s6e63j0x03_update_gamma(struct s6e63j0x03 *ctx, + unsigned int brightness) +{ + struct backlight_device *bl_dev = ctx->bl_dev; + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + unsigned int index = s6e63j0x03_get_brightness_index(brightness); + int ret; + + ret = s6e63j0x03_apply_mtp_key(ctx, true); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_write(dsi, gamma_tbl[index], GAMMA_CMD_CNT); + if (ret < 0) + return ret; + + ret = s6e63j0x03_apply_mtp_key(ctx, false); + if (ret < 0) + return ret; + + bl_dev->props.brightness = brightness; + + return 0; +} + +static int s6e63j0x03_set_brightness(struct backlight_device *bl_dev) +{ + struct s6e63j0x03 *ctx = (struct s6e63j0x03 *)bl_get_data(bl_dev); + unsigned int brightness = bl_dev->props.brightness; + int ret; + + if (brightness < MIN_BRIGHTNESS || + brightness > bl_dev->props.max_brightness) { + dev_err(ctx->dev, "Invalid brightness: %u\n", brightness); + return -EINVAL; + } + + if (bl_dev->props.power > FB_BLANK_NORMAL) { + dev_err(ctx->dev, + "panel must be at least in fb blank normal state\n"); + return -EPERM; + } + + ret = s6e63j0x03_update_gamma(ctx, brightness); + if (ret < 0) + return ret; + + return 0; +} + +static const struct backlight_ops s6e63j0x03_bl_ops = { + .get_brightness = s6e63j0x03_get_brightness, + .update_status = s6e63j0x03_set_brightness, +}; + +static int s6e63j0x03_disable(struct drm_panel *panel) +{ + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); + struct backlight_device *bl_dev = ctx->bl_dev; + u8 seq[] = { MIPI_DCS_SET_DISPLAY_OFF }; + int ret; + + ret = s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); + if (ret > 0) + bl_dev->props.power = FB_BLANK_NORMAL; + + return 0; +} + +static int s6e63j0x03_unprepare(struct drm_panel *panel) +{ + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); + struct backlight_device *bl_dev = ctx->bl_dev; + u8 seq[] = { MIPI_DCS_ENTER_SLEEP_MODE }; + int ret; + + ret = s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); + if (ret < 0) + return ret; + + msleep(ctx->power_off_delay); + + ret = s6e63j0x03_power_off(ctx); + if (ret < 0) + return ret; + + bl_dev->props.power = FB_BLANK_POWERDOWN; + + return 0; +} + +static int s6e63j0x03_prepare(struct drm_panel *panel) +{ + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); + struct backlight_device *bl_dev = ctx->bl_dev; + int ret; + int i; + + ret = s6e63j0x03_power_on(ctx); + if (ret < 0) + return ret; + + ret = s6e63j0x03_enable_lv2_command(ctx); + if (ret < 0) + return ret; + + ret = s6e63j0x03_apply_mtp_key(ctx, true); + if (ret < 0) + return ret; + + ret = s6e63j0x03_read_mtp_id(ctx); + if (ret < 0) + return ret; + + for (i = 0; i < ARRAY_SIZE(prepare_cmds1); i++) { + ret = s6e63j0x03_dcs_write_seq(ctx, &prepare_cmds1[i][1], + prepare_cmds1[i][0]); + if (ret < 0) + return ret; + } + + msleep(120); + + for (i = 0; i < ARRAY_SIZE(prepare_cmds2); i++) { + ret = s6e63j0x03_dcs_write_seq(ctx, &prepare_cmds2[i][1], + prepare_cmds2[i][0]); + if (ret < 0) + return ret; + } + + ret = s6e63j0x03_apply_mtp_key(ctx, false); + if (ret < 0) + return ret; + + bl_dev->props.power = FB_BLANK_NORMAL; + + return 0; +} + +static int s6e63j0x03_enable(struct drm_panel *panel) +{ + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel); + struct backlight_device *bl_dev = ctx->bl_dev; + u8 seq[] = { MIPI_DCS_SET_DISPLAY_ON }; + int ret; + + ret = s6e63j0x03_dcs_write_seq(ctx, seq, ARRAY_SIZE(seq)); + if (ret > 0) + bl_dev->props.power = FB_BLANK_UNBLANK; + + return 0; +} + +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_funcs = { + .disable = s6e63j0x03_disable, + .unprepare = s6e63j0x03_unprepare, + .prepare = s6e63j0x03_prepare, + .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); + of_property_read_u32(np, "panel-width-mm", &ctx->width_mm); + of_property_read_u32(np, "panel-height-mm", &ctx->height_mm); + + return ret; +} + +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 = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ctx->reset_gpio)) { + dev_err(dev, "cannot get reset-gpio: %ld\n", + PTR_ERR(ctx->reset_gpio)); + return PTR_ERR(ctx->reset_gpio); + } + + drm_panel_init(&ctx->panel); + ctx->panel.dev = dev; + ctx->panel.funcs = &s6e63j0x03_funcs; + + ctx->bl_dev = backlight_device_register("s6e63j0x03", dev, ctx, + &s6e63j0x03_bl_ops, NULL); + if (IS_ERR(ctx->bl_dev)) { + dev_err(dev, "failed to register backlight device\n"); + return PTR_ERR(ctx->bl_dev); + } + + ctx->bl_dev->props.max_brightness = MAX_BRIGHTNESS; + ctx->bl_dev->props.brightness = DEFAULT_BRIGHTNESS; + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN; + + + ret = drm_panel_add(&ctx->panel); + if (ret < 0) + goto unregister_backlight; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) + goto remove_panel; + + return ret; + +remove_panel: + drm_panel_remove(&ctx->panel); + +unregister_backlight: + backlight_device_unregister(ctx->bl_dev); + + 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); + + backlight_device_unregister(ctx->bl_dev); + + return 0; +} + +static const 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", + .of_match_table = s6e63j0x03_of_match, + }, +}; +module_mipi_dsi_driver(s6e63j0x03_driver); + +MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); +MODULE_DESCRIPTION("MIPI-DSI based s6e8aa0 AMOLED LCD Panel Driver"); +MODULE_LICENSE("GPL v2");