Feiyang FY07024DI26A30-D is 1024x600, 4-lane MIPI-DSI LCD panel.

Add panel driver for it.

Signed-off-by: Jagan Teki jagan@amarulasolutions.com Reviewed-by: Sam Ravnborg sam@ravnborg.org Tested-by: Bhushan Shah bshah@kde.org Tested-by: Merlijn Wajer merlijn@wizzup.org --- Changes for v7: - rebase on master - collect Merlijn Tested-by - add tabs about drm timings Changes for v6: - add space b/w msleep and comment line - use multi comment line style - add sentinel - collect Sam Ravnborg Reviewed-by Changes for v5: - drop drmP.h header - order include files - add empty line after kzalloc() - drop gpio set for reset - drop backlight put_device from probe() - drop backlight put_device from remove() - collect Tested-by from Bhushan Shah Changes for v4: - rebase on master - adjust the hporch values to satisfy the refresh Changes for v3: - use simple structure for command init - update proper comments on power, reset delay sequnce - fix to use set_display_off in disable function - move mode type to structure - drop refres rate value, let drm compute Changes for v2: - new patch, derived from another dsi series

MAINTAINERS | 6 + drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + .../drm/panel/panel-feiyang-fy07024di26a30d.c | 272 ++++++++++++++++++ 4 files changed, 288 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c

diff --git a/MAINTAINERS b/MAINTAINERS index d69a86052c4f..75cfda73df61 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4879,6 +4879,12 @@ T: git git://anongit.freedesktop.org/drm/drm-misc S: Maintained F: drivers/gpu/drm/tve200/

+DRM DRIVER FOR FEIYANG FY07024DI26A30-D MIPI-DSI LCD PANELS +M: Jagan Teki jagan@amarulasolutions.com +S: Maintained +F: drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c +F: Documentation/devicetree/bindings/display/panel/feiyang,fy07024di26a30d.txt + DRM DRIVER FOR ILITEK ILI9225 PANELS M: David Lechner david@lechnology.com S: Maintained diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 3e070153ef21..2754ac11f9be 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -38,6 +38,15 @@ config DRM_PANEL_SIMPLE that it can be automatically turned off when the panel goes into a low power state.

+config DRM_PANEL_FEIYANG_FY07024DI26A30D + tristate "Feiyang FY07024DI26A30-D MIPI-DSI LCD panel" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y if you want to enable support for panels based on the + Feiyang FY07024DI26A30-D MIPI-DSI interface. + config DRM_PANEL_ILITEK_IL9322 tristate "Ilitek ILI9322 320x240 QVGA panels" depends on OF && SPI diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index e7ab71968bbf..3a39628894d0 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_DRM_PANEL_ARM_VERSATILE) += panel-arm-versatile.o obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o +obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o diff --git a/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c new file mode 100644 index 000000000000..dabf59e0f56f --- /dev/null +++ b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c @@ -0,0 +1,272 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018 Amarula Solutions + * Author: Jagan Teki jagan@amarulasolutions.com + */ + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_print.h> + +#include <linux/backlight.h> +#include <linux/gpio/consumer.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regulator/consumer.h> + +#define FEIYANG_INIT_CMD_LEN 2 + +struct feiyang { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + + struct backlight_device *backlight; + struct regulator *dvdd; + struct regulator *avdd; + struct gpio_desc *reset; +}; + +static inline struct feiyang *panel_to_feiyang(struct drm_panel *panel) +{ + return container_of(panel, struct feiyang, panel); +} + +struct feiyang_init_cmd { + u8 data[FEIYANG_INIT_CMD_LEN]; +}; + +static const struct feiyang_init_cmd feiyang_init_cmds[] = { + { .data = { 0x80, 0x58 } }, + { .data = { 0x81, 0x47 } }, + { .data = { 0x82, 0xD4 } }, + { .data = { 0x83, 0x88 } }, + { .data = { 0x84, 0xA9 } }, + { .data = { 0x85, 0xC3 } }, + { .data = { 0x86, 0x82 } }, +}; + +static int feiyang_prepare(struct drm_panel *panel) +{ + struct feiyang *ctx = panel_to_feiyang(panel); + struct mipi_dsi_device *dsi = ctx->dsi; + unsigned int i; + int ret; + + ret = regulator_enable(ctx->dvdd); + if (ret) + return ret; + + /* T1 (dvdd start + dvdd rise) 0 < T1 <= 10ms */ + msleep(10); + + ret = regulator_enable(ctx->avdd); + if (ret) + return ret; + + /* T3 (dvdd rise + avdd start + avdd rise) T3 >= 20ms */ + msleep(20); + + gpiod_set_value(ctx->reset, 0); + + /* + * T5 + T6 (avdd rise + video & logic signal rise) + * T5 >= 10ms, 0 < T6 <= 10ms + */ + msleep(20); + + gpiod_set_value(ctx->reset, 1); + + /* T12 (video & logic signal rise + backlight rise) T12 >= 200ms */ + msleep(200); + + for (i = 0; i < ARRAY_SIZE(feiyang_init_cmds); i++) { + const struct feiyang_init_cmd *cmd = + &feiyang_init_cmds[i]; + + ret = mipi_dsi_dcs_write_buffer(dsi, cmd->data, + FEIYANG_INIT_CMD_LEN); + if (ret < 0) + return ret; + } + + return 0; +} + +static int feiyang_enable(struct drm_panel *panel) +{ + struct feiyang *ctx = panel_to_feiyang(panel); + + /* T12 (video & logic signal rise + backlight rise) T12 >= 200ms */ + msleep(200); + + mipi_dsi_dcs_set_display_on(ctx->dsi); + backlight_enable(ctx->backlight); + + return 0; +} + +static int feiyang_disable(struct drm_panel *panel) +{ + struct feiyang *ctx = panel_to_feiyang(panel); + + backlight_disable(ctx->backlight); + return mipi_dsi_dcs_set_display_off(ctx->dsi); +} + +static int feiyang_unprepare(struct drm_panel *panel) +{ + struct feiyang *ctx = panel_to_feiyang(panel); + int ret; + + ret = mipi_dsi_dcs_set_display_off(ctx->dsi); + if (ret < 0) + DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n", + ret); + + ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi); + if (ret < 0) + DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n", + ret); + + /* T13 (backlight fall + video & logic signal fall) T13 >= 200ms */ + msleep(200); + + gpiod_set_value(ctx->reset, 0); + + regulator_disable(ctx->avdd); + + /* T11 (dvdd rise to fall) 0 < T11 <= 10ms */ + msleep(10); + + regulator_disable(ctx->dvdd); + + return 0; +} + +static const struct drm_display_mode feiyang_default_mode = { + .clock = 55000, + + .hdisplay = 1024, + .hsync_start = 1024 + 310, + .hsync_end = 1024 + 310 + 20, + .htotal = 1024 + 310 + 20 + 90, + + .vdisplay = 600, + .vsync_start = 600 + 12, + .vsync_end = 600 + 12 + 2, + .vtotal = 600 + 12 + 2 + 21, + .vrefresh = 60, + + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, +}; + +static int feiyang_get_modes(struct drm_panel *panel) +{ + struct drm_connector *connector = panel->connector; + struct feiyang *ctx = panel_to_feiyang(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &feiyang_default_mode); + if (!mode) { + DRM_DEV_ERROR(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n", + feiyang_default_mode.hdisplay, + feiyang_default_mode.vdisplay, + feiyang_default_mode.vrefresh); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + drm_mode_probed_add(connector, mode); + + return 1; +} + +static const struct drm_panel_funcs feiyang_funcs = { + .disable = feiyang_disable, + .unprepare = feiyang_unprepare, + .prepare = feiyang_prepare, + .enable = feiyang_enable, + .get_modes = feiyang_get_modes, +}; + +static int feiyang_dsi_probe(struct mipi_dsi_device *dsi) +{ + struct feiyang *ctx; + int ret; + + ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + mipi_dsi_set_drvdata(dsi, ctx); + ctx->dsi = dsi; + + drm_panel_init(&ctx->panel); + ctx->panel.dev = &dsi->dev; + ctx->panel.funcs = &feiyang_funcs; + + ctx->dvdd = devm_regulator_get(&dsi->dev, "dvdd"); + if (IS_ERR(ctx->dvdd)) { + DRM_DEV_ERROR(&dsi->dev, "Couldn't get dvdd regulator\n"); + return PTR_ERR(ctx->dvdd); + } + + ctx->avdd = devm_regulator_get(&dsi->dev, "avdd"); + if (IS_ERR(ctx->avdd)) { + DRM_DEV_ERROR(&dsi->dev, "Couldn't get avdd regulator\n"); + return PTR_ERR(ctx->avdd); + } + + ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset)) { + DRM_DEV_ERROR(&dsi->dev, "Couldn't get our reset GPIO\n"); + return PTR_ERR(ctx->reset); + } + + ctx->backlight = devm_of_find_backlight(&dsi->dev); + if (IS_ERR(ctx->backlight)) + return PTR_ERR(ctx->backlight); + + ret = drm_panel_add(&ctx->panel); + if (ret < 0) + return ret; + + dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->lanes = 4; + + return mipi_dsi_attach(dsi); +} + +static int feiyang_dsi_remove(struct mipi_dsi_device *dsi) +{ + struct feiyang *ctx = mipi_dsi_get_drvdata(dsi); + + mipi_dsi_detach(dsi); + drm_panel_remove(&ctx->panel); + + return 0; +} + +static const struct of_device_id feiyang_of_match[] = { + { .compatible = "feiyang,fy07024di26a30d", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, feiyang_of_match); + +static struct mipi_dsi_driver feiyang_driver = { + .probe = feiyang_dsi_probe, + .remove = feiyang_dsi_remove, + .driver = { + .name = "feiyang-fy07024di26a30d", + .of_match_table = feiyang_of_match, + }, +}; +module_mipi_dsi_driver(feiyang_driver); + +MODULE_AUTHOR("Jagan Teki jagan@amarulasolutions.com"); +MODULE_DESCRIPTION("Feiyang FY07024DI26A30-D MIPI-DSI LCD panel"); +MODULE_LICENSE("GPL");