* Re: [PATCH v2 2/3] drm/panel: add s6e63j0x03 LCD panel driver
2014-12-09 9:29 ` [PATCH v2 2/3] drm/panel: add s6e63j0x03 LCD panel driver Hyungwon Hwang
@ 2014-12-31 10:41 ` Inki Dae
2015-01-05 14:19 ` Thierry Reding
2015-01-05 15:28 ` [Resend][PATCH " Inki Dae
1 sibling, 1 reply; 10+ messages in thread
From: Inki Dae @ 2014-12-31 10:41 UTC (permalink / raw)
To: Hyungwon Hwang, Thierry Reding
Cc: mark.rutland, devicetree, linux-samsung-soc, pawel.moll,
ijc+devicetree, dri-devel, a.hajda, kyungmin.park, robh+dt, galak,
Kukjin Kim
Hi Thierry,
Ping~.
Or is it ok to pick up this patch to my tree, exynos-drm-next? It
doesn't seem to care for a long time.
Thanks,
Inki Dae
On 2014년 12월 09일 18:29, 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
>
> drivers/gpu/drm/panel/Kconfig | 6 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-s6e63j0x03.c | 549 +++++++++++++++++++++++++++++++
> 3 files changed, 556 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-s6e63j0x03.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index bee9f72..bc133e2 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -27,4 +27,10 @@ config DRM_PANEL_S6E8AA0
> 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 8b92921..7f36dc2 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
> diff --git a/drivers/gpu/drm/panel/panel-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-s6e63j0x03.c
> new file mode 100644
> index 0000000..28e4a51
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-s6e63j0x03.c
> @@ -0,0 +1,549 @@
> +/*
> + * 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;
> + bool flip_horizontal;
> + bool flip_vertical;
> + 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);
> +
> + ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal");
> + ctx->flip_vertical = of_property_read_bool(np, "flip-vertical");
> +
> + 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");
>
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^ permalink raw reply [flat|nested] 10+ messages in thread* [Resend][PATCH v2 2/3] drm/panel: add s6e63j0x03 LCD panel driver
2014-12-09 9:29 ` [PATCH v2 2/3] drm/panel: add s6e63j0x03 LCD panel driver Hyungwon Hwang
2014-12-31 10:41 ` Inki Dae
@ 2015-01-05 15:28 ` Inki Dae
2015-01-16 11:30 ` Thierry Reding
1 sibling, 1 reply; 10+ messages in thread
From: Inki Dae @ 2015-01-05 15:28 UTC (permalink / raw)
To: Thierry Reding, DRI mailing list
Cc: Mark Rutland, devicetree@vger.kernel.org,
linux-samsung-soc@vger.kernel.org, Pawel Moll, Ian Campbell,
Andrzej Hajda, Kyungmin Park, Rob Herring, Kumar Gala, Kukjin Kim
Just resend it with Thierry's request.
Thanks,
Inki Dae
-------- Original Message --------
Subject: [PATCH v2 2/3] drm/panel: add s6e63j0x03 LCD panel driver
Date: Tue, 09 Dec 2014 18:29:05 +0900
From: Hyungwon Hwang <human.hwang@samsung.com>
To: dri-devel@lists.freedesktop.org
CC: airlied@linux.ie, devicetree@vger.kernel.org, robh+dt@kernel.org,
pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk,
galak@codeaurora.org, linux-samsung-soc@vger.kernel.org,
kyungmin.park@samsung.com, inki.dae@samsung.com, a.hajda@samsung.com,
kgene.kim@samsung.com, thierry.reding@gmail.com, Hyungwon Hwang
<human.hwang@samsung.com>
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
drivers/gpu/drm/panel/Kconfig | 6 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-s6e63j0x03.c | 549
+++++++++++++++++++++++++++++++
3 files changed, 556 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-s6e63j0x03.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index bee9f72..bc133e2 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -27,4 +27,10 @@ config DRM_PANEL_S6E8AA0
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 8b92921..7f36dc2 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
diff --git a/drivers/gpu/drm/panel/panel-s6e63j0x03.c
b/drivers/gpu/drm/panel/panel-s6e63j0x03.c
new file mode 100644
index 0000000..28e4a51
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-s6e63j0x03.c
@@ -0,0 +1,549 @@
+/*
+ * 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;
+ bool flip_horizontal;
+ bool flip_vertical;
+ 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);
+
+ ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal");
+ ctx->flip_vertical = of_property_read_bool(np, "flip-vertical");
+
+ 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");
--
1.9.1
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