* [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-06-27 2:11 ` Hoegeun Kwon
0 siblings, 0 replies; 19+ messages in thread
From: Hoegeun Kwon @ 2017-06-27 2:11 UTC (permalink / raw)
To: linux-arm-kernel
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" 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>
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
---
drivers/gpu/drm/panel/Kconfig | 7 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
3 files changed, 548 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 3e29a99..3f4afde 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
depends on DRM_MIPI_DSI
select VIDEOMODE_HELPERS
+config DRM_PANEL_SAMSUNG_S6E63J0X03
+ tristate "Samsung S6E63J0X03 DSI command mode panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ select VIDEOMODE_HELPERS
+
config DRM_PANEL_SAMSUNG_S6E8AA0
tristate "Samsung S6E8AA0 DSI video mode panel"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 292b3c7..f028269 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
+obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
new file mode 100644
index 0000000..c3d1b5d
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
@@ -0,0 +1,540 @@
+/*
+ * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
+ *
+ * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
+ *
+ * Inki Dae <inki.dae@samsung.com>
+ * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <video/mipi_display.h>
+
+#define MCS_LEVEL2_KEY 0xf0
+#define MCS_MTP_KEY 0xf1
+#define MCS_MTP_SET3 0xd4
+
+#define MAX_BRIGHTNESS 100
+#define DEFAULT_BRIGHTNESS 80
+
+#define NUM_GAMMA_STEPS 9
+#define GAMMA_CMD_CNT 28
+
+#define FIRST_COLUMN 20
+
+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;
+};
+
+static const struct drm_display_mode default_mode = {
+ .clock = 4649,
+ .hdisplay = 320,
+ .hsync_start = 320 + 1,
+ .hsync_end = 320 + 1 + 1,
+ .htotal = 320 + 1 + 1 + 1,
+ .vdisplay = 320,
+ .vsync_start = 320 + 150,
+ .vsync_end = 320 + 150 + 1,
+ .vtotal = 320 + 150 + 1 + 2,
+ .vrefresh = 30,
+ .flags = 0,
+};
+
+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 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 void *seq, size_t len)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+ return mipi_dsi_dcs_write_buffer(dsi, seq, len);
+}
+
+#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
+ do { \
+ static const u8 d[] = { seq }; \
+ ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
+ } while (0)
+
+static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
+{
+ int ret;
+
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
+ return ret;
+}
+
+static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
+{
+ int ret;
+
+ if (on)
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MCS_MTP_KEY, 0x5a, 0x5a);
+ else
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MCS_MTP_KEY, 0xa5, 0xa5);
+
+ return ret;
+}
+
+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(30);
+
+ gpiod_set_value(ctx->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ gpiod_set_value(ctx->reset_gpio, 0);
+ usleep_range(5000, 6000);
+
+ return 0;
+}
+
+static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
+{
+ return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+}
+
+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;
+ unsigned int index = s6e63j0x03_get_brightness_index(brightness);
+ int ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, true);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
+ unsigned int brightness = bl_dev->props.brightness;
+
+ return s6e63j0x03_update_gamma(ctx, brightness);
+}
+
+static const struct backlight_ops s6e63j0x03_bl_ops = {
+ .update_status = s6e63j0x03_set_brightness,
+};
+
+static int s6e63j0x03_disable(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0)
+ return ret;
+
+ ctx->bl_dev->props.power = FB_BLANK_NORMAL;
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0)
+ return ret;
+
+ msleep(120);
+
+ return 0;
+}
+
+static int s6e63j0x03_unprepare(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ int ret;
+
+ ret = s6e63j0x03_power_off(ctx);
+ if (ret < 0)
+ return ret;
+
+ ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
+
+ return 0;
+}
+
+static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ ret = s6e63j0x03_enable_lv2_command(ctx);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, true);
+ if (ret < 0)
+ return ret;
+
+ /* set porch adjustment */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
+ if (ret < 0)
+ return ret;
+
+ /* set frame freq */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
+ if (ret < 0)
+ return ret;
+
+ /* set caset, paset */
+ ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
+ default_mode.hdisplay - 1 + FIRST_COLUMN);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
+ if (ret < 0)
+ return ret;
+
+ /* set ltps timming 0, 1 */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
+ 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
+ if (ret < 0)
+ return ret;
+
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
+ if (ret < 0)
+ return ret;
+
+ /* set param pos te_edge */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
+ if (ret < 0)
+ return ret;
+
+ /* set te rising edge */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
+ if (ret < 0)
+ return ret;
+
+ /* set param pos default */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, false);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int s6e63j0x03_prepare(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ int ret;
+
+ ret = s6e63j0x03_power_on(ctx);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_panel_init(ctx);
+ if (ret < 0)
+ goto err;
+
+ ctx->bl_dev->props.power = FB_BLANK_NORMAL;
+
+ return 0;
+
+err:
+ s6e63j0x03_power_off(ctx);
+ return ret;
+}
+
+static int s6e63j0x03_enable(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ msleep(120);
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, true);
+ if (ret < 0)
+ return ret;
+
+ /* set elvss_cond */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
+ if (ret < 0)
+ return ret;
+
+ /* set pos */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MIPI_DCS_SET_ADDRESS_MODE, 0x40);
+ if (ret < 0)
+ return ret;
+
+ /* set default white brightness */
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
+ if (ret < 0)
+ return ret;
+
+ /* set whilte ctrl */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+ if (ret < 0)
+ return ret;
+
+ /* set acl off */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, false);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0)
+ return ret;
+
+ ctx->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 drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(panel->drm, &default_mode);
+ if (!mode) {
+ DRM_ERROR("failed to add mode %ux%ux@%u\n",
+ default_mode.hdisplay, default_mode.vdisplay,
+ default_mode.vrefresh);
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_probed_add(connector, mode);
+
+ connector->display_info.width_mm = 29;
+ connector->display_info.height_mm = 29;
+
+ 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_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;
+
+ 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_LOW);
+ 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_samsung_s6e63j0x03",
+ .of_match_table = s6e63j0x03_of_match,
+ },
+};
+module_mipi_dsi_driver(s6e63j0x03_driver);
+
+MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
+MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon@samsung.com>");
+MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
+MODULE_LICENSE("GPL v2");
--
1.9.1
^ permalink raw reply related [flat|nested] 19+ messages in thread* [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-06-27 2:11 ` Hoegeun Kwon
0 siblings, 0 replies; 19+ messages in thread
From: Hoegeun Kwon @ 2017-06-27 2:11 UTC (permalink / raw)
To: thierry.reding-Re5JQEeQqe8AvxtiuMwx3w, airlied-cv59FeDIM0c,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A, mark.rutland-5wv7dgnIgG8,
catalin.marinas-5wv7dgnIgG8, will.deacon-5wv7dgnIgG8,
kgene-DgEjT+Ai2ygdnm+yROfE0A, krzk-DgEjT+Ai2ygdnm+yROfE0A
Cc: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
javier-JPH+aEBZ4P+UEJcrhfAQsw, a.hajda-Sze3O3UU22JBDgjK7y7TUQ,
inki.dae-Sze3O3UU22JBDgjK7y7TUQ, Hoegeun Kwon, Hyungwon Hwang
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" physical panel. This panel is used in
Samsung Galaxy Gear 2.
Signed-off-by: Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Signed-off-by: Hyungwon Hwang <human.hwang-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Signed-off-by: Hoegeun Kwon <hoegeun.kwon-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/gpu/drm/panel/Kconfig | 7 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
3 files changed, 548 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 3e29a99..3f4afde 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
depends on DRM_MIPI_DSI
select VIDEOMODE_HELPERS
+config DRM_PANEL_SAMSUNG_S6E63J0X03
+ tristate "Samsung S6E63J0X03 DSI command mode panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ select VIDEOMODE_HELPERS
+
config DRM_PANEL_SAMSUNG_S6E8AA0
tristate "Samsung S6E8AA0 DSI video mode panel"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 292b3c7..f028269 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
+obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
new file mode 100644
index 0000000..c3d1b5d
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
@@ -0,0 +1,540 @@
+/*
+ * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
+ *
+ * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
+ *
+ * Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
+ * Hoegeun Kwon <hoegeun.kwon-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
+ *
+ * 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/backlight.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <video/mipi_display.h>
+
+#define MCS_LEVEL2_KEY 0xf0
+#define MCS_MTP_KEY 0xf1
+#define MCS_MTP_SET3 0xd4
+
+#define MAX_BRIGHTNESS 100
+#define DEFAULT_BRIGHTNESS 80
+
+#define NUM_GAMMA_STEPS 9
+#define GAMMA_CMD_CNT 28
+
+#define FIRST_COLUMN 20
+
+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;
+};
+
+static const struct drm_display_mode default_mode = {
+ .clock = 4649,
+ .hdisplay = 320,
+ .hsync_start = 320 + 1,
+ .hsync_end = 320 + 1 + 1,
+ .htotal = 320 + 1 + 1 + 1,
+ .vdisplay = 320,
+ .vsync_start = 320 + 150,
+ .vsync_end = 320 + 150 + 1,
+ .vtotal = 320 + 150 + 1 + 2,
+ .vrefresh = 30,
+ .flags = 0,
+};
+
+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 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 void *seq, size_t len)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+ return mipi_dsi_dcs_write_buffer(dsi, seq, len);
+}
+
+#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
+ do { \
+ static const u8 d[] = { seq }; \
+ ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
+ } while (0)
+
+static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
+{
+ int ret;
+
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
+ return ret;
+}
+
+static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
+{
+ int ret;
+
+ if (on)
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MCS_MTP_KEY, 0x5a, 0x5a);
+ else
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MCS_MTP_KEY, 0xa5, 0xa5);
+
+ return ret;
+}
+
+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(30);
+
+ gpiod_set_value(ctx->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ gpiod_set_value(ctx->reset_gpio, 0);
+ usleep_range(5000, 6000);
+
+ return 0;
+}
+
+static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
+{
+ return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+}
+
+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;
+ unsigned int index = s6e63j0x03_get_brightness_index(brightness);
+ int ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, true);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
+ unsigned int brightness = bl_dev->props.brightness;
+
+ return s6e63j0x03_update_gamma(ctx, brightness);
+}
+
+static const struct backlight_ops s6e63j0x03_bl_ops = {
+ .update_status = s6e63j0x03_set_brightness,
+};
+
+static int s6e63j0x03_disable(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0)
+ return ret;
+
+ ctx->bl_dev->props.power = FB_BLANK_NORMAL;
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0)
+ return ret;
+
+ msleep(120);
+
+ return 0;
+}
+
+static int s6e63j0x03_unprepare(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ int ret;
+
+ ret = s6e63j0x03_power_off(ctx);
+ if (ret < 0)
+ return ret;
+
+ ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
+
+ return 0;
+}
+
+static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ ret = s6e63j0x03_enable_lv2_command(ctx);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, true);
+ if (ret < 0)
+ return ret;
+
+ /* set porch adjustment */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
+ if (ret < 0)
+ return ret;
+
+ /* set frame freq */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
+ if (ret < 0)
+ return ret;
+
+ /* set caset, paset */
+ ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
+ default_mode.hdisplay - 1 + FIRST_COLUMN);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
+ if (ret < 0)
+ return ret;
+
+ /* set ltps timming 0, 1 */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
+ 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
+ if (ret < 0)
+ return ret;
+
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
+ if (ret < 0)
+ return ret;
+
+ /* set param pos te_edge */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
+ if (ret < 0)
+ return ret;
+
+ /* set te rising edge */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
+ if (ret < 0)
+ return ret;
+
+ /* set param pos default */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, false);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int s6e63j0x03_prepare(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ int ret;
+
+ ret = s6e63j0x03_power_on(ctx);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_panel_init(ctx);
+ if (ret < 0)
+ goto err;
+
+ ctx->bl_dev->props.power = FB_BLANK_NORMAL;
+
+ return 0;
+
+err:
+ s6e63j0x03_power_off(ctx);
+ return ret;
+}
+
+static int s6e63j0x03_enable(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ msleep(120);
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, true);
+ if (ret < 0)
+ return ret;
+
+ /* set elvss_cond */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
+ if (ret < 0)
+ return ret;
+
+ /* set pos */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MIPI_DCS_SET_ADDRESS_MODE, 0x40);
+ if (ret < 0)
+ return ret;
+
+ /* set default white brightness */
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
+ if (ret < 0)
+ return ret;
+
+ /* set whilte ctrl */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+ if (ret < 0)
+ return ret;
+
+ /* set acl off */
+ s6e63j0x03_dcs_write_seq_static(ret, ctx,
+ MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+ if (ret < 0)
+ return ret;
+
+ ret = s6e63j0x03_apply_mtp_key(ctx, false);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0)
+ return ret;
+
+ ctx->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 drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(panel->drm, &default_mode);
+ if (!mode) {
+ DRM_ERROR("failed to add mode %ux%ux@%u\n",
+ default_mode.hdisplay, default_mode.vdisplay,
+ default_mode.vrefresh);
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_probed_add(connector, mode);
+
+ connector->display_info.width_mm = 29;
+ connector->display_info.height_mm = 29;
+
+ 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_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;
+
+ 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_LOW);
+ 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_samsung_s6e63j0x03",
+ .of_match_table = s6e63j0x03_of_match,
+ },
+};
+module_mipi_dsi_driver(s6e63j0x03_driver);
+
+MODULE_AUTHOR("Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>");
+MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>");
+MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
+MODULE_LICENSE("GPL v2");
--
1.9.1
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^ permalink raw reply related [flat|nested] 19+ messages in thread* Re: [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
2017-06-27 2:11 ` Hoegeun Kwon
(?)
@ 2017-07-12 8:35 ` Hoegeun Kwon
-1 siblings, 0 replies; 19+ messages in thread
From: Hoegeun Kwon @ 2017-07-12 8:35 UTC (permalink / raw)
To: thierry.reding, airlied, robh+dt, mark.rutland, catalin.marinas,
will.deacon, kgene, krzk, a.hajda
Cc: dri-devel, devicetree, linux-arm-kernel, linux-samsung-soc,
linux-kernel, javier, inki.dae, Hyungwon Hwang, Hoegeun Kwon
Hi Andrzej,
Could you please check this patch?
Best regards,
Hoegeun
On 06/27/2017 11:11 AM, Hoegeun Kwon wrote:
> 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" 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>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
> ---
> drivers/gpu/drm/panel/Kconfig | 7 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
> 3 files changed, 548 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 3e29a99..3f4afde 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
> depends on DRM_MIPI_DSI
> select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_SAMSUNG_S6E63J0X03
> + tristate "Samsung S6E63J0X03 DSI command mode panel"
> + depends on OF
> + depends on DRM_MIPI_DSI
> + depends on BACKLIGHT_CLASS_DEVICE
> + select VIDEOMODE_HELPERS
> +
> config DRM_PANEL_SAMSUNG_S6E8AA0
> tristate "Samsung S6E8AA0 DSI video mode panel"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 292b3c7..f028269 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> new file mode 100644
> index 0000000..c3d1b5d
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> @@ -0,0 +1,540 @@
> +/*
> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
> + *
> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
> + *
> + * Inki Dae <inki.dae@samsung.com>
> + * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +#include <video/mipi_display.h>
> +
> +#define MCS_LEVEL2_KEY 0xf0
> +#define MCS_MTP_KEY 0xf1
> +#define MCS_MTP_SET3 0xd4
> +
> +#define MAX_BRIGHTNESS 100
> +#define DEFAULT_BRIGHTNESS 80
> +
> +#define NUM_GAMMA_STEPS 9
> +#define GAMMA_CMD_CNT 28
> +
> +#define FIRST_COLUMN 20
> +
> +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;
> +};
> +
> +static const struct drm_display_mode default_mode = {
> + .clock = 4649,
> + .hdisplay = 320,
> + .hsync_start = 320 + 1,
> + .hsync_end = 320 + 1 + 1,
> + .htotal = 320 + 1 + 1 + 1,
> + .vdisplay = 320,
> + .vsync_start = 320 + 150,
> + .vsync_end = 320 + 150 + 1,
> + .vtotal = 320 + 150 + 1 + 2,
> + .vrefresh = 30,
> + .flags = 0,
> +};
> +
> +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 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 void *seq, size_t len)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +
> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
> +}
> +
> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
> + do { \
> + static const u8 d[] = { seq }; \
> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> + } while (0)
> +
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + int ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
> + return ret;
> +}
> +
> +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
> +{
> + int ret;
> +
> + if (on)
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0x5a, 0x5a);
> + else
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0xa5, 0xa5);
> +
> + return ret;
> +}
> +
> +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(30);
> +
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(1000, 2000);
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(5000, 6000);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
> +{
> + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +}
> +
> +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;
> + unsigned int index = s6e63j0x03_get_brightness_index(brightness);
> + int ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
> + unsigned int brightness = bl_dev->props.brightness;
> +
> + return s6e63j0x03_update_gamma(ctx, brightness);
> +}
> +
> +static const struct backlight_ops s6e63j0x03_bl_ops = {
> + .update_status = s6e63j0x03_set_brightness,
> +};
> +
> +static int s6e63j0x03_disable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = mipi_dsi_dcs_set_display_off(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + msleep(120);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_unprepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_off(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = s6e63j0x03_enable_lv2_command(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set porch adjustment */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
> + if (ret < 0)
> + return ret;
> +
> + /* set frame freq */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + /* set caset, paset */
> + ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
> + default_mode.hdisplay - 1 + FIRST_COLUMN);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
> + if (ret < 0)
> + return ret;
> +
> + /* set ltps timming 0, 1 */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
> + 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos te_edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
> + if (ret < 0)
> + return ret;
> +
> + /* set te rising edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos default */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_prepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_on(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_panel_init(ctx);
> + if (ret < 0)
> + goto err;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + return 0;
> +
> +err:
> + s6e63j0x03_power_off(ctx);
> + return ret;
> +}
> +
> +static int s6e63j0x03_enable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + msleep(120);
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set elvss_cond */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
> + if (ret < 0)
> + return ret;
> +
> + /* set pos */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_SET_ADDRESS_MODE, 0x40);
> + if (ret < 0)
> + return ret;
> +
> + /* set default white brightness */
> + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
> + if (ret < 0)
> + return ret;
> +
> + /* set whilte ctrl */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> + if (ret < 0)
> + return ret;
> +
> + /* set acl off */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_POWER_SAVE, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_display_on(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->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 drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(panel->drm, &default_mode);
> + if (!mode) {
> + DRM_ERROR("failed to add mode %ux%ux@%u\n",
> + default_mode.hdisplay, default_mode.vdisplay,
> + default_mode.vrefresh);
> + return -ENOMEM;
> + }
> +
> + drm_mode_set_name(mode);
> +
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + drm_mode_probed_add(connector, mode);
> +
> + connector->display_info.width_mm = 29;
> + connector->display_info.height_mm = 29;
> +
> + 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_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;
> +
> + 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_LOW);
> + 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_samsung_s6e63j0x03",
> + .of_match_table = s6e63j0x03_of_match,
> + },
> +};
> +module_mipi_dsi_driver(s6e63j0x03_driver);
> +
> +MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
> +MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon@samsung.com>");
> +MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
> +MODULE_LICENSE("GPL v2");
^ permalink raw reply [flat|nested] 19+ messages in thread* [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-07-12 8:35 ` Hoegeun Kwon
0 siblings, 0 replies; 19+ messages in thread
From: Hoegeun Kwon @ 2017-07-12 8:35 UTC (permalink / raw)
To: linux-arm-kernel
Hi Andrzej,
Could you please check this patch?
Best regards,
Hoegeun
On 06/27/2017 11:11 AM, Hoegeun Kwon wrote:
> 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" 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>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
> ---
> drivers/gpu/drm/panel/Kconfig | 7 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
> 3 files changed, 548 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 3e29a99..3f4afde 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
> depends on DRM_MIPI_DSI
> select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_SAMSUNG_S6E63J0X03
> + tristate "Samsung S6E63J0X03 DSI command mode panel"
> + depends on OF
> + depends on DRM_MIPI_DSI
> + depends on BACKLIGHT_CLASS_DEVICE
> + select VIDEOMODE_HELPERS
> +
> config DRM_PANEL_SAMSUNG_S6E8AA0
> tristate "Samsung S6E8AA0 DSI video mode panel"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 292b3c7..f028269 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> new file mode 100644
> index 0000000..c3d1b5d
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> @@ -0,0 +1,540 @@
> +/*
> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
> + *
> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
> + *
> + * Inki Dae <inki.dae@samsung.com>
> + * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +#include <video/mipi_display.h>
> +
> +#define MCS_LEVEL2_KEY 0xf0
> +#define MCS_MTP_KEY 0xf1
> +#define MCS_MTP_SET3 0xd4
> +
> +#define MAX_BRIGHTNESS 100
> +#define DEFAULT_BRIGHTNESS 80
> +
> +#define NUM_GAMMA_STEPS 9
> +#define GAMMA_CMD_CNT 28
> +
> +#define FIRST_COLUMN 20
> +
> +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;
> +};
> +
> +static const struct drm_display_mode default_mode = {
> + .clock = 4649,
> + .hdisplay = 320,
> + .hsync_start = 320 + 1,
> + .hsync_end = 320 + 1 + 1,
> + .htotal = 320 + 1 + 1 + 1,
> + .vdisplay = 320,
> + .vsync_start = 320 + 150,
> + .vsync_end = 320 + 150 + 1,
> + .vtotal = 320 + 150 + 1 + 2,
> + .vrefresh = 30,
> + .flags = 0,
> +};
> +
> +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 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 void *seq, size_t len)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +
> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
> +}
> +
> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
> + do { \
> + static const u8 d[] = { seq }; \
> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> + } while (0)
> +
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + int ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
> + return ret;
> +}
> +
> +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
> +{
> + int ret;
> +
> + if (on)
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0x5a, 0x5a);
> + else
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0xa5, 0xa5);
> +
> + return ret;
> +}
> +
> +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(30);
> +
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(1000, 2000);
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(5000, 6000);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
> +{
> + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +}
> +
> +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;
> + unsigned int index = s6e63j0x03_get_brightness_index(brightness);
> + int ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
> + unsigned int brightness = bl_dev->props.brightness;
> +
> + return s6e63j0x03_update_gamma(ctx, brightness);
> +}
> +
> +static const struct backlight_ops s6e63j0x03_bl_ops = {
> + .update_status = s6e63j0x03_set_brightness,
> +};
> +
> +static int s6e63j0x03_disable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = mipi_dsi_dcs_set_display_off(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + msleep(120);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_unprepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_off(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = s6e63j0x03_enable_lv2_command(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set porch adjustment */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
> + if (ret < 0)
> + return ret;
> +
> + /* set frame freq */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + /* set caset, paset */
> + ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
> + default_mode.hdisplay - 1 + FIRST_COLUMN);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
> + if (ret < 0)
> + return ret;
> +
> + /* set ltps timming 0, 1 */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
> + 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos te_edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
> + if (ret < 0)
> + return ret;
> +
> + /* set te rising edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos default */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_prepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_on(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_panel_init(ctx);
> + if (ret < 0)
> + goto err;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + return 0;
> +
> +err:
> + s6e63j0x03_power_off(ctx);
> + return ret;
> +}
> +
> +static int s6e63j0x03_enable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + msleep(120);
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set elvss_cond */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
> + if (ret < 0)
> + return ret;
> +
> + /* set pos */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_SET_ADDRESS_MODE, 0x40);
> + if (ret < 0)
> + return ret;
> +
> + /* set default white brightness */
> + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
> + if (ret < 0)
> + return ret;
> +
> + /* set whilte ctrl */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> + if (ret < 0)
> + return ret;
> +
> + /* set acl off */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_POWER_SAVE, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_display_on(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->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 drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(panel->drm, &default_mode);
> + if (!mode) {
> + DRM_ERROR("failed to add mode %ux%ux@%u\n",
> + default_mode.hdisplay, default_mode.vdisplay,
> + default_mode.vrefresh);
> + return -ENOMEM;
> + }
> +
> + drm_mode_set_name(mode);
> +
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + drm_mode_probed_add(connector, mode);
> +
> + connector->display_info.width_mm = 29;
> + connector->display_info.height_mm = 29;
> +
> + 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_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;
> +
> + 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_LOW);
> + 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_samsung_s6e63j0x03",
> + .of_match_table = s6e63j0x03_of_match,
> + },
> +};
> +module_mipi_dsi_driver(s6e63j0x03_driver);
> +
> +MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
> +MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon@samsung.com>");
> +MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
> +MODULE_LICENSE("GPL v2");
^ permalink raw reply [flat|nested] 19+ messages in thread* Re: [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-07-12 8:35 ` Hoegeun Kwon
0 siblings, 0 replies; 19+ messages in thread
From: Hoegeun Kwon @ 2017-07-12 8:35 UTC (permalink / raw)
To: thierry.reding, airlied, robh+dt, mark.rutland, catalin.marinas,
will.deacon, kgene, krzk, a.hajda
Cc: devicetree, linux-samsung-soc, linux-kernel, dri-devel, javier,
Hyungwon Hwang, Hoegeun Kwon, linux-arm-kernel
Hi Andrzej,
Could you please check this patch?
Best regards,
Hoegeun
On 06/27/2017 11:11 AM, Hoegeun Kwon wrote:
> 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" 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>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
> ---
> drivers/gpu/drm/panel/Kconfig | 7 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
> 3 files changed, 548 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 3e29a99..3f4afde 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
> depends on DRM_MIPI_DSI
> select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_SAMSUNG_S6E63J0X03
> + tristate "Samsung S6E63J0X03 DSI command mode panel"
> + depends on OF
> + depends on DRM_MIPI_DSI
> + depends on BACKLIGHT_CLASS_DEVICE
> + select VIDEOMODE_HELPERS
> +
> config DRM_PANEL_SAMSUNG_S6E8AA0
> tristate "Samsung S6E8AA0 DSI video mode panel"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 292b3c7..f028269 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> new file mode 100644
> index 0000000..c3d1b5d
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> @@ -0,0 +1,540 @@
> +/*
> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
> + *
> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
> + *
> + * Inki Dae <inki.dae@samsung.com>
> + * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +#include <video/mipi_display.h>
> +
> +#define MCS_LEVEL2_KEY 0xf0
> +#define MCS_MTP_KEY 0xf1
> +#define MCS_MTP_SET3 0xd4
> +
> +#define MAX_BRIGHTNESS 100
> +#define DEFAULT_BRIGHTNESS 80
> +
> +#define NUM_GAMMA_STEPS 9
> +#define GAMMA_CMD_CNT 28
> +
> +#define FIRST_COLUMN 20
> +
> +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;
> +};
> +
> +static const struct drm_display_mode default_mode = {
> + .clock = 4649,
> + .hdisplay = 320,
> + .hsync_start = 320 + 1,
> + .hsync_end = 320 + 1 + 1,
> + .htotal = 320 + 1 + 1 + 1,
> + .vdisplay = 320,
> + .vsync_start = 320 + 150,
> + .vsync_end = 320 + 150 + 1,
> + .vtotal = 320 + 150 + 1 + 2,
> + .vrefresh = 30,
> + .flags = 0,
> +};
> +
> +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 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 void *seq, size_t len)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +
> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
> +}
> +
> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
> + do { \
> + static const u8 d[] = { seq }; \
> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> + } while (0)
> +
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + int ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
> + return ret;
> +}
> +
> +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
> +{
> + int ret;
> +
> + if (on)
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0x5a, 0x5a);
> + else
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0xa5, 0xa5);
> +
> + return ret;
> +}
> +
> +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(30);
> +
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(1000, 2000);
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(5000, 6000);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
> +{
> + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +}
> +
> +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;
> + unsigned int index = s6e63j0x03_get_brightness_index(brightness);
> + int ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
> + unsigned int brightness = bl_dev->props.brightness;
> +
> + return s6e63j0x03_update_gamma(ctx, brightness);
> +}
> +
> +static const struct backlight_ops s6e63j0x03_bl_ops = {
> + .update_status = s6e63j0x03_set_brightness,
> +};
> +
> +static int s6e63j0x03_disable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = mipi_dsi_dcs_set_display_off(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + msleep(120);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_unprepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_off(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = s6e63j0x03_enable_lv2_command(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set porch adjustment */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
> + if (ret < 0)
> + return ret;
> +
> + /* set frame freq */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + /* set caset, paset */
> + ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
> + default_mode.hdisplay - 1 + FIRST_COLUMN);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
> + if (ret < 0)
> + return ret;
> +
> + /* set ltps timming 0, 1 */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
> + 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos te_edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
> + if (ret < 0)
> + return ret;
> +
> + /* set te rising edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos default */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_prepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_on(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_panel_init(ctx);
> + if (ret < 0)
> + goto err;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + return 0;
> +
> +err:
> + s6e63j0x03_power_off(ctx);
> + return ret;
> +}
> +
> +static int s6e63j0x03_enable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + msleep(120);
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set elvss_cond */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
> + if (ret < 0)
> + return ret;
> +
> + /* set pos */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_SET_ADDRESS_MODE, 0x40);
> + if (ret < 0)
> + return ret;
> +
> + /* set default white brightness */
> + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
> + if (ret < 0)
> + return ret;
> +
> + /* set whilte ctrl */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> + if (ret < 0)
> + return ret;
> +
> + /* set acl off */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_POWER_SAVE, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_display_on(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->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 drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(panel->drm, &default_mode);
> + if (!mode) {
> + DRM_ERROR("failed to add mode %ux%ux@%u\n",
> + default_mode.hdisplay, default_mode.vdisplay,
> + default_mode.vrefresh);
> + return -ENOMEM;
> + }
> +
> + drm_mode_set_name(mode);
> +
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + drm_mode_probed_add(connector, mode);
> +
> + connector->display_info.width_mm = 29;
> + connector->display_info.height_mm = 29;
> +
> + 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_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;
> +
> + 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_LOW);
> + 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_samsung_s6e63j0x03",
> + .of_match_table = s6e63j0x03_of_match,
> + },
> +};
> +module_mipi_dsi_driver(s6e63j0x03_driver);
> +
> +MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
> +MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon@samsung.com>");
> +MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
> +MODULE_LICENSE("GPL v2");
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^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-07-12 13:25 ` Andrzej Hajda
0 siblings, 0 replies; 19+ messages in thread
From: Andrzej Hajda @ 2017-07-12 13:25 UTC (permalink / raw)
To: Hoegeun Kwon, thierry.reding, airlied, robh+dt, mark.rutland,
catalin.marinas, will.deacon, kgene, krzk
Cc: dri-devel, devicetree, linux-arm-kernel, linux-samsung-soc,
linux-kernel, javier, inki.dae, Hyungwon Hwang
On 27.06.2017 04:11, Hoegeun Kwon wrote:
> 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" 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>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
> ---
> drivers/gpu/drm/panel/Kconfig | 7 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
> 3 files changed, 548 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 3e29a99..3f4afde 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
> depends on DRM_MIPI_DSI
> select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_SAMSUNG_S6E63J0X03
> + tristate "Samsung S6E63J0X03 DSI command mode panel"
> + depends on OF
> + depends on DRM_MIPI_DSI
> + depends on BACKLIGHT_CLASS_DEVICE
> + select VIDEOMODE_HELPERS
> +
> config DRM_PANEL_SAMSUNG_S6E8AA0
> tristate "Samsung S6E8AA0 DSI video mode panel"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 292b3c7..f028269 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> new file mode 100644
> index 0000000..c3d1b5d
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> @@ -0,0 +1,540 @@
> +/*
> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
> + *
> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
> + *
> + * Inki Dae <inki.dae@samsung.com>
> + * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +#include <video/mipi_display.h>
> +
> +#define MCS_LEVEL2_KEY 0xf0
> +#define MCS_MTP_KEY 0xf1
> +#define MCS_MTP_SET3 0xd4
> +
> +#define MAX_BRIGHTNESS 100
> +#define DEFAULT_BRIGHTNESS 80
> +
> +#define NUM_GAMMA_STEPS 9
> +#define GAMMA_CMD_CNT 28
> +
> +#define FIRST_COLUMN 20
> +
> +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;
> +};
> +
> +static const struct drm_display_mode default_mode = {
> + .clock = 4649,
> + .hdisplay = 320,
> + .hsync_start = 320 + 1,
> + .hsync_end = 320 + 1 + 1,
> + .htotal = 320 + 1 + 1 + 1,
> + .vdisplay = 320,
> + .vsync_start = 320 + 150,
> + .vsync_end = 320 + 150 + 1,
> + .vtotal = 320 + 150 + 1 + 2,
> + .vrefresh = 30,
> + .flags = 0,
> +};
> +
> +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 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 void *seq, size_t len)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +
> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
> +}
> +
> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
> + do { \
> + static const u8 d[] = { seq }; \
> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> + } while (0)
I think better would be to use statement expression here [1]:
#define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \
({ \
static const u8 d[] = { seq }; \
s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
})
This way instead of passing ret by reference you can use return value.
[1]: https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
> +
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + int ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
> + return ret;
> +}
With the construct above this function can be simplified to:
+static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
+}
Similarly other functions.
> +
> +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
> +{
> + int ret;
> +
> + if (on)
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0x5a, 0x5a);
> + else
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0xa5, 0xa5);
> +
> + return ret;
> +}
> +
> +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(30);
> +
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(1000, 2000);
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(5000, 6000);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
> +{
> + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +}
> +
> +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;
> + unsigned int index = s6e63j0x03_get_brightness_index(brightness);
> + int ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
> + unsigned int brightness = bl_dev->props.brightness;
> +
> + return s6e63j0x03_update_gamma(ctx, brightness);
> +}
> +
> +static const struct backlight_ops s6e63j0x03_bl_ops = {
> + .update_status = s6e63j0x03_set_brightness,
> +};
> +
> +static int s6e63j0x03_disable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = mipi_dsi_dcs_set_display_off(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + msleep(120);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_unprepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_off(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = s6e63j0x03_enable_lv2_command(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set porch adjustment */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
> + if (ret < 0)
> + return ret;
> +
> + /* set frame freq */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + /* set caset, paset */
> + ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
> + default_mode.hdisplay - 1 + FIRST_COLUMN);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
> + if (ret < 0)
> + return ret;
> +
> + /* set ltps timming 0, 1 */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
> + 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos te_edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
> + if (ret < 0)
> + return ret;
> +
> + /* set te rising edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos default */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_prepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_on(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_panel_init(ctx);
> + if (ret < 0)
> + goto err;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + return 0;
> +
> +err:
> + s6e63j0x03_power_off(ctx);
> + return ret;
> +}
> +
> +static int s6e63j0x03_enable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + msleep(120);
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set elvss_cond */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
> + if (ret < 0)
> + return ret;
> +
> + /* set pos */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_SET_ADDRESS_MODE, 0x40);
> + if (ret < 0)
> + return ret;
> +
> + /* set default white brightness */
> + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
> + if (ret < 0)
> + return ret;
> +
> + /* set whilte ctrl */
s/whilte/white/
With above comments addressed, you can add:
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
--
Regards
Andrzej
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> + if (ret < 0)
> + return ret;
> +
> + /* set acl off */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_POWER_SAVE, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_display_on(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->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 drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(panel->drm, &default_mode);
> + if (!mode) {
> + DRM_ERROR("failed to add mode %ux%ux@%u\n",
> + default_mode.hdisplay, default_mode.vdisplay,
> + default_mode.vrefresh);
> + return -ENOMEM;
> + }
> +
> + drm_mode_set_name(mode);
> +
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + drm_mode_probed_add(connector, mode);
> +
> + connector->display_info.width_mm = 29;
> + connector->display_info.height_mm = 29;
> +
> + 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_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;
> +
> + 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_LOW);
> + 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_samsung_s6e63j0x03",
> + .of_match_table = s6e63j0x03_of_match,
> + },
> +};
> +module_mipi_dsi_driver(s6e63j0x03_driver);
> +
> +MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
> +MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon@samsung.com>");
> +MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
> +MODULE_LICENSE("GPL v2");
^ permalink raw reply [flat|nested] 19+ messages in thread* [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-07-12 13:25 ` Andrzej Hajda
0 siblings, 0 replies; 19+ messages in thread
From: Andrzej Hajda @ 2017-07-12 13:25 UTC (permalink / raw)
To: linux-arm-kernel
On 27.06.2017 04:11, Hoegeun Kwon wrote:
> 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" 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>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
> ---
> drivers/gpu/drm/panel/Kconfig | 7 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
> 3 files changed, 548 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 3e29a99..3f4afde 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
> depends on DRM_MIPI_DSI
> select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_SAMSUNG_S6E63J0X03
> + tristate "Samsung S6E63J0X03 DSI command mode panel"
> + depends on OF
> + depends on DRM_MIPI_DSI
> + depends on BACKLIGHT_CLASS_DEVICE
> + select VIDEOMODE_HELPERS
> +
> config DRM_PANEL_SAMSUNG_S6E8AA0
> tristate "Samsung S6E8AA0 DSI video mode panel"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 292b3c7..f028269 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> new file mode 100644
> index 0000000..c3d1b5d
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> @@ -0,0 +1,540 @@
> +/*
> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
> + *
> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
> + *
> + * Inki Dae <inki.dae@samsung.com>
> + * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +#include <video/mipi_display.h>
> +
> +#define MCS_LEVEL2_KEY 0xf0
> +#define MCS_MTP_KEY 0xf1
> +#define MCS_MTP_SET3 0xd4
> +
> +#define MAX_BRIGHTNESS 100
> +#define DEFAULT_BRIGHTNESS 80
> +
> +#define NUM_GAMMA_STEPS 9
> +#define GAMMA_CMD_CNT 28
> +
> +#define FIRST_COLUMN 20
> +
> +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;
> +};
> +
> +static const struct drm_display_mode default_mode = {
> + .clock = 4649,
> + .hdisplay = 320,
> + .hsync_start = 320 + 1,
> + .hsync_end = 320 + 1 + 1,
> + .htotal = 320 + 1 + 1 + 1,
> + .vdisplay = 320,
> + .vsync_start = 320 + 150,
> + .vsync_end = 320 + 150 + 1,
> + .vtotal = 320 + 150 + 1 + 2,
> + .vrefresh = 30,
> + .flags = 0,
> +};
> +
> +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 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 void *seq, size_t len)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +
> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
> +}
> +
> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
> + do { \
> + static const u8 d[] = { seq }; \
> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> + } while (0)
I think better would be to use statement expression here [1]:
#define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \
({ \
static const u8 d[] = { seq }; \
s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
})
This way instead of passing ret by reference you can use return value.
[1]: https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
> +
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + int ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
> + return ret;
> +}
With the construct above this function can be simplified to:
+static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
+}
Similarly other functions.
> +
> +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
> +{
> + int ret;
> +
> + if (on)
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0x5a, 0x5a);
> + else
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0xa5, 0xa5);
> +
> + return ret;
> +}
> +
> +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(30);
> +
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(1000, 2000);
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(5000, 6000);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
> +{
> + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +}
> +
> +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;
> + unsigned int index = s6e63j0x03_get_brightness_index(brightness);
> + int ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
> + unsigned int brightness = bl_dev->props.brightness;
> +
> + return s6e63j0x03_update_gamma(ctx, brightness);
> +}
> +
> +static const struct backlight_ops s6e63j0x03_bl_ops = {
> + .update_status = s6e63j0x03_set_brightness,
> +};
> +
> +static int s6e63j0x03_disable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = mipi_dsi_dcs_set_display_off(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + msleep(120);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_unprepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_off(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = s6e63j0x03_enable_lv2_command(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set porch adjustment */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
> + if (ret < 0)
> + return ret;
> +
> + /* set frame freq */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + /* set caset, paset */
> + ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
> + default_mode.hdisplay - 1 + FIRST_COLUMN);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
> + if (ret < 0)
> + return ret;
> +
> + /* set ltps timming 0, 1 */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
> + 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos te_edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
> + if (ret < 0)
> + return ret;
> +
> + /* set te rising edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos default */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_prepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_on(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_panel_init(ctx);
> + if (ret < 0)
> + goto err;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + return 0;
> +
> +err:
> + s6e63j0x03_power_off(ctx);
> + return ret;
> +}
> +
> +static int s6e63j0x03_enable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + msleep(120);
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set elvss_cond */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
> + if (ret < 0)
> + return ret;
> +
> + /* set pos */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_SET_ADDRESS_MODE, 0x40);
> + if (ret < 0)
> + return ret;
> +
> + /* set default white brightness */
> + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
> + if (ret < 0)
> + return ret;
> +
> + /* set whilte ctrl */
s/whilte/white/
With above comments addressed, you can add:
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
--
Regards
Andrzej
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> + if (ret < 0)
> + return ret;
> +
> + /* set acl off */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_POWER_SAVE, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_display_on(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->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 drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(panel->drm, &default_mode);
> + if (!mode) {
> + DRM_ERROR("failed to add mode %ux%ux@%u\n",
> + default_mode.hdisplay, default_mode.vdisplay,
> + default_mode.vrefresh);
> + return -ENOMEM;
> + }
> +
> + drm_mode_set_name(mode);
> +
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + drm_mode_probed_add(connector, mode);
> +
> + connector->display_info.width_mm = 29;
> + connector->display_info.height_mm = 29;
> +
> + 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_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;
> +
> + 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_LOW);
> + 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_samsung_s6e63j0x03",
> + .of_match_table = s6e63j0x03_of_match,
> + },
> +};
> +module_mipi_dsi_driver(s6e63j0x03_driver);
> +
> +MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
> +MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon@samsung.com>");
> +MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
> +MODULE_LICENSE("GPL v2");
^ permalink raw reply [flat|nested] 19+ messages in thread* Re: [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-07-12 13:25 ` Andrzej Hajda
0 siblings, 0 replies; 19+ messages in thread
From: Andrzej Hajda @ 2017-07-12 13:25 UTC (permalink / raw)
To: Hoegeun Kwon, thierry.reding-Re5JQEeQqe8AvxtiuMwx3w,
airlied-cv59FeDIM0c, robh+dt-DgEjT+Ai2ygdnm+yROfE0A,
mark.rutland-5wv7dgnIgG8, catalin.marinas-5wv7dgnIgG8,
will.deacon-5wv7dgnIgG8, kgene-DgEjT+Ai2ygdnm+yROfE0A,
krzk-DgEjT+Ai2ygdnm+yROfE0A
Cc: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
javier-JPH+aEBZ4P+UEJcrhfAQsw, inki.dae-Sze3O3UU22JBDgjK7y7TUQ,
Hyungwon Hwang
On 27.06.2017 04:11, Hoegeun Kwon wrote:
> 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" physical panel. This panel is used in
> Samsung Galaxy Gear 2.
>
> Signed-off-by: Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Signed-off-by: Hyungwon Hwang <human.hwang-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
> drivers/gpu/drm/panel/Kconfig | 7 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
> 3 files changed, 548 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 3e29a99..3f4afde 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
> depends on DRM_MIPI_DSI
> select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_SAMSUNG_S6E63J0X03
> + tristate "Samsung S6E63J0X03 DSI command mode panel"
> + depends on OF
> + depends on DRM_MIPI_DSI
> + depends on BACKLIGHT_CLASS_DEVICE
> + select VIDEOMODE_HELPERS
> +
> config DRM_PANEL_SAMSUNG_S6E8AA0
> tristate "Samsung S6E8AA0 DSI video mode panel"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 292b3c7..f028269 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> new file mode 100644
> index 0000000..c3d1b5d
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
> @@ -0,0 +1,540 @@
> +/*
> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
> + *
> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
> + *
> + * Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> + * Hoegeun Kwon <hoegeun.kwon-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> + *
> + * 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/backlight.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +#include <video/mipi_display.h>
> +
> +#define MCS_LEVEL2_KEY 0xf0
> +#define MCS_MTP_KEY 0xf1
> +#define MCS_MTP_SET3 0xd4
> +
> +#define MAX_BRIGHTNESS 100
> +#define DEFAULT_BRIGHTNESS 80
> +
> +#define NUM_GAMMA_STEPS 9
> +#define GAMMA_CMD_CNT 28
> +
> +#define FIRST_COLUMN 20
> +
> +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;
> +};
> +
> +static const struct drm_display_mode default_mode = {
> + .clock = 4649,
> + .hdisplay = 320,
> + .hsync_start = 320 + 1,
> + .hsync_end = 320 + 1 + 1,
> + .htotal = 320 + 1 + 1 + 1,
> + .vdisplay = 320,
> + .vsync_start = 320 + 150,
> + .vsync_end = 320 + 150 + 1,
> + .vtotal = 320 + 150 + 1 + 2,
> + .vrefresh = 30,
> + .flags = 0,
> +};
> +
> +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 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 void *seq, size_t len)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +
> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
> +}
> +
> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
> + do { \
> + static const u8 d[] = { seq }; \
> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> + } while (0)
I think better would be to use statement expression here [1]:
#define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \
({ \
static const u8 d[] = { seq }; \
s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
})
This way instead of passing ret by reference you can use return value.
[1]: https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
> +
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + int ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
> + return ret;
> +}
With the construct above this function can be simplified to:
+static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
+}
Similarly other functions.
> +
> +static inline int s6e63j0x03_apply_mtp_key(struct s6e63j0x03 *ctx, bool on)
> +{
> + int ret;
> +
> + if (on)
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0x5a, 0x5a);
> + else
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MCS_MTP_KEY, 0xa5, 0xa5);
> +
> + return ret;
> +}
> +
> +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(30);
> +
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(1000, 2000);
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(5000, 6000);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
> +{
> + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +}
> +
> +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;
> + unsigned int index = s6e63j0x03_get_brightness_index(brightness);
> + int ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_dcs_write_seq(ctx, 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 = bl_get_data(bl_dev);
> + unsigned int brightness = bl_dev->props.brightness;
> +
> + return s6e63j0x03_update_gamma(ctx, brightness);
> +}
> +
> +static const struct backlight_ops s6e63j0x03_bl_ops = {
> + .update_status = s6e63j0x03_set_brightness,
> +};
> +
> +static int s6e63j0x03_disable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = mipi_dsi_dcs_set_display_off(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + msleep(120);
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_unprepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_off(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_panel_init(struct s6e63j0x03 *ctx)
> +{
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + ret = s6e63j0x03_enable_lv2_command(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set porch adjustment */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf2, 0x1c, 0x28);
> + if (ret < 0)
> + return ret;
> +
> + /* set frame freq */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb5, 0x00, 0x02, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + /* set caset, paset */
> + ret = mipi_dsi_dcs_set_column_address(dsi, FIRST_COLUMN,
> + default_mode.hdisplay - 1 + FIRST_COLUMN);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);
> + if (ret < 0)
> + return ret;
> +
> + /* set ltps timming 0, 1 */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf8, 0x08, 0x08, 0x08, 0x17,
> + 0x00, 0x2a, 0x02, 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xf7, 0x02);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos te_edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x01);
> + if (ret < 0)
> + return ret;
> +
> + /* set te rising edge */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xe2, 0x0f);
> + if (ret < 0)
> + return ret;
> +
> + /* set param pos default */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb0, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int s6e63j0x03_prepare(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + int ret;
> +
> + ret = s6e63j0x03_power_on(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_panel_init(ctx);
> + if (ret < 0)
> + goto err;
> +
> + ctx->bl_dev->props.power = FB_BLANK_NORMAL;
> +
> + return 0;
> +
> +err:
> + s6e63j0x03_power_off(ctx);
> + return ret;
> +}
> +
> +static int s6e63j0x03_enable(struct drm_panel *panel)
> +{
> + struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> + int ret;
> +
> + msleep(120);
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, true);
> + if (ret < 0)
> + return ret;
> +
> + /* set elvss_cond */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx, 0xb1, 0x00, 0x09);
> + if (ret < 0)
> + return ret;
> +
> + /* set pos */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_SET_ADDRESS_MODE, 0x40);
> + if (ret < 0)
> + return ret;
> +
> + /* set default white brightness */
> + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
> + if (ret < 0)
> + return ret;
> +
> + /* set whilte ctrl */
s/whilte/white/
With above comments addressed, you can add:
Reviewed-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
--
Regards
Andrzej
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> + if (ret < 0)
> + return ret;
> +
> + /* set acl off */
> + s6e63j0x03_dcs_write_seq_static(ret, ctx,
> + MIPI_DCS_WRITE_POWER_SAVE, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> + if (ret < 0)
> + return ret;
> +
> + ret = s6e63j0x03_apply_mtp_key(ctx, false);
> + if (ret < 0)
> + return ret;
> +
> + ret = mipi_dsi_dcs_set_display_on(dsi);
> + if (ret < 0)
> + return ret;
> +
> + ctx->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 drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(panel->drm, &default_mode);
> + if (!mode) {
> + DRM_ERROR("failed to add mode %ux%ux@%u\n",
> + default_mode.hdisplay, default_mode.vdisplay,
> + default_mode.vrefresh);
> + return -ENOMEM;
> + }
> +
> + drm_mode_set_name(mode);
> +
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + drm_mode_probed_add(connector, mode);
> +
> + connector->display_info.width_mm = 29;
> + connector->display_info.height_mm = 29;
> +
> + 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_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;
> +
> + 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_LOW);
> + 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_samsung_s6e63j0x03",
> + .of_match_table = s6e63j0x03_of_match,
> + },
> +};
> +module_mipi_dsi_driver(s6e63j0x03_driver);
> +
> +MODULE_AUTHOR("Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>");
> +MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>");
> +MODULE_DESCRIPTION("MIPI-DSI based s6e63j0x03 AMOLED LCD Panel Driver");
> +MODULE_LICENSE("GPL v2");
--
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^ permalink raw reply [flat|nested] 19+ messages in thread* Re: [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
2017-07-12 13:25 ` Andrzej Hajda
@ 2017-07-12 14:52 ` Andrzej Hajda
-1 siblings, 0 replies; 19+ messages in thread
From: Andrzej Hajda @ 2017-07-12 14:52 UTC (permalink / raw)
To: Hoegeun Kwon, thierry.reding, airlied, robh+dt, mark.rutland,
catalin.marinas, will.deacon, kgene, krzk
Cc: devicetree, linux-samsung-soc, linux-kernel, dri-devel, javier,
Hyungwon Hwang, linux-arm-kernel
On 12.07.2017 15:25, Andrzej Hajda wrote:
> On 27.06.2017 04:11, Hoegeun Kwon wrote:
>> 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" 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>
>> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
>> ---
>> drivers/gpu/drm/panel/Kconfig | 7 +
>> drivers/gpu/drm/panel/Makefile | 1 +
>> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
>> 3 files changed, 548 insertions(+)
>> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>>
>> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
>> index 3e29a99..3f4afde 100644
>> --- a/drivers/gpu/drm/panel/Kconfig
>> +++ b/drivers/gpu/drm/panel/Kconfig
>> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
>> depends on DRM_MIPI_DSI
>> select VIDEOMODE_HELPERS
>>
>> +config DRM_PANEL_SAMSUNG_S6E63J0X03
>> + tristate "Samsung S6E63J0X03 DSI command mode panel"
>> + depends on OF
>> + depends on DRM_MIPI_DSI
>> + depends on BACKLIGHT_CLASS_DEVICE
>> + select VIDEOMODE_HELPERS
>> +
>> config DRM_PANEL_SAMSUNG_S6E8AA0
>> tristate "Samsung S6E8AA0 DSI video mode panel"
>> depends on OF
>> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
>> index 292b3c7..f028269 100644
>> --- a/drivers/gpu/drm/panel/Makefile
>> +++ b/drivers/gpu/drm/panel/Makefile
>> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
>> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
>> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
>> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
>> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
>> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
>> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
>> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
>> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>> new file mode 100644
>> index 0000000..c3d1b5d
>> --- /dev/null
>> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>> @@ -0,0 +1,540 @@
>> +/*
>> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
>> + *
>> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
>> + *
>> + * Inki Dae <inki.dae@samsung.com>
>> + * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
>> +#include <linux/gpio/consumer.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <video/mipi_display.h>
>> +
>> +#define MCS_LEVEL2_KEY 0xf0
>> +#define MCS_MTP_KEY 0xf1
>> +#define MCS_MTP_SET3 0xd4
>> +
>> +#define MAX_BRIGHTNESS 100
>> +#define DEFAULT_BRIGHTNESS 80
>> +
>> +#define NUM_GAMMA_STEPS 9
>> +#define GAMMA_CMD_CNT 28
>> +
>> +#define FIRST_COLUMN 20
>> +
>> +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;
>> +};
>> +
>> +static const struct drm_display_mode default_mode = {
>> + .clock = 4649,
>> + .hdisplay = 320,
>> + .hsync_start = 320 + 1,
>> + .hsync_end = 320 + 1 + 1,
>> + .htotal = 320 + 1 + 1 + 1,
>> + .vdisplay = 320,
>> + .vsync_start = 320 + 150,
>> + .vsync_end = 320 + 150 + 1,
>> + .vtotal = 320 + 150 + 1 + 2,
>> + .vrefresh = 30,
>> + .flags = 0,
>> +};
>> +
>> +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 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 void *seq, size_t len)
>> +{
>> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
>> +
>> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
>> +}
>> +
>> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
>> + do { \
>> + static const u8 d[] = { seq }; \
>> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
>> + } while (0)
> I think better would be to use statement expression here [1]:
> #define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \
> ({ \
> static const u8 d[] = { seq }; \
> s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> })
>
> This way instead of passing ret by reference you can use return value.
>
> [1]: https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
>
>> +
>> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
>> +{
>> + int ret;
>> +
>> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
>> + return ret;
>> +}
> With the construct above this function can be simplified to:
>
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
Ups, should be:
return s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
Regards
Andrzej
> +}
>
>
^ permalink raw reply [flat|nested] 19+ messages in thread* [PATCH v3 2/3] drm/panel: Add support for s6e63j0x03 panel driver
@ 2017-07-12 14:52 ` Andrzej Hajda
0 siblings, 0 replies; 19+ messages in thread
From: Andrzej Hajda @ 2017-07-12 14:52 UTC (permalink / raw)
To: linux-arm-kernel
On 12.07.2017 15:25, Andrzej Hajda wrote:
> On 27.06.2017 04:11, Hoegeun Kwon wrote:
>> 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" 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>
>> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
>> ---
>> drivers/gpu/drm/panel/Kconfig | 7 +
>> drivers/gpu/drm/panel/Makefile | 1 +
>> drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c | 540 +++++++++++++++++++++++
>> 3 files changed, 548 insertions(+)
>> create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>>
>> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
>> index 3e29a99..3f4afde 100644
>> --- a/drivers/gpu/drm/panel/Kconfig
>> +++ b/drivers/gpu/drm/panel/Kconfig
>> @@ -68,6 +68,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
>> depends on DRM_MIPI_DSI
>> select VIDEOMODE_HELPERS
>>
>> +config DRM_PANEL_SAMSUNG_S6E63J0X03
>> + tristate "Samsung S6E63J0X03 DSI command mode panel"
>> + depends on OF
>> + depends on DRM_MIPI_DSI
>> + depends on BACKLIGHT_CLASS_DEVICE
>> + select VIDEOMODE_HELPERS
>> +
>> config DRM_PANEL_SAMSUNG_S6E8AA0
>> tristate "Samsung S6E8AA0 DSI video mode panel"
>> depends on OF
>> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
>> index 292b3c7..f028269 100644
>> --- a/drivers/gpu/drm/panel/Makefile
>> +++ b/drivers/gpu/drm/panel/Makefile
>> @@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
>> obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
>> obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
>> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
>> +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
>> obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
>> obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
>> obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
>> diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>> new file mode 100644
>> index 0000000..c3d1b5d
>> --- /dev/null
>> +++ b/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
>> @@ -0,0 +1,540 @@
>> +/*
>> + * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
>> + *
>> + * Copyright (c) 2014-2017 Samsung Electronics Co., Ltd
>> + *
>> + * Inki Dae <inki.dae@samsung.com>
>> + * Hoegeun Kwon <hoegeun.kwon@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/backlight.h>
>> +#include <linux/gpio/consumer.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <video/mipi_display.h>
>> +
>> +#define MCS_LEVEL2_KEY 0xf0
>> +#define MCS_MTP_KEY 0xf1
>> +#define MCS_MTP_SET3 0xd4
>> +
>> +#define MAX_BRIGHTNESS 100
>> +#define DEFAULT_BRIGHTNESS 80
>> +
>> +#define NUM_GAMMA_STEPS 9
>> +#define GAMMA_CMD_CNT 28
>> +
>> +#define FIRST_COLUMN 20
>> +
>> +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;
>> +};
>> +
>> +static const struct drm_display_mode default_mode = {
>> + .clock = 4649,
>> + .hdisplay = 320,
>> + .hsync_start = 320 + 1,
>> + .hsync_end = 320 + 1 + 1,
>> + .htotal = 320 + 1 + 1 + 1,
>> + .vdisplay = 320,
>> + .vsync_start = 320 + 150,
>> + .vsync_end = 320 + 150 + 1,
>> + .vtotal = 320 + 150 + 1 + 2,
>> + .vrefresh = 30,
>> + .flags = 0,
>> +};
>> +
>> +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 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 void *seq, size_t len)
>> +{
>> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
>> +
>> + return mipi_dsi_dcs_write_buffer(dsi, seq, len);
>> +}
>> +
>> +#define s6e63j0x03_dcs_write_seq_static(ret, ctx, seq...) \
>> + do { \
>> + static const u8 d[] = { seq }; \
>> + ret = s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
>> + } while (0)
> I think better would be to use statement expression here [1]:
> #define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \
> ({ \
> static const u8 d[] = { seq }; \
> s6e63j0x03_dcs_write_seq(ctx, d, ARRAY_SIZE(d)); \
> })
>
> This way instead of passing ret by reference you can use return value.
>
> [1]: https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
>
>> +
>> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
>> +{
>> + int ret;
>> +
>> + s6e63j0x03_dcs_write_seq_static(ret, ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
>> + return ret;
>> +}
> With the construct above this function can be simplified to:
>
> +static inline int s6e63j0x03_enable_lv2_command(struct s6e63j0x03 *ctx)
> +{
> + s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
Ups, should be:
return s6e63j0x03_dcs_write_seq_static(ctx, MCS_LEVEL2_KEY, 0x5a, 0x5a);
Regards
Andrzej
> +}
>
>
^ permalink raw reply [flat|nested] 19+ messages in thread