[PATCH v5 08/10] drm/panel: Add Ilitek ILI9805 panel driver
Neil Armstrong
neil.armstrong at linaro.org
Mon Dec 11 08:31:04 UTC 2023
On 07/12/2023 15:16, Dario Binacchi wrote:
> From: Michael Trimarchi <michael at amarulasolutions.com>
>
> The GPM1790A0 panel is based on the Ilitek ILI9805 Controller.
> Add a driver for it.
>
> Signed-off-by: Michael Trimarchi <michael at amarulasolutions.com>
> Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
>
> ---
>
> (no changes since v4)
>
> Changes in v4:
> - Remove duplicated code for prepare/unprepare callbacks
>
> MAINTAINERS | 6 +
> drivers/gpu/drm/panel/Kconfig | 9 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-ilitek-ili9805.c | 353 +++++++++++++++++++
> 4 files changed, 369 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9805.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index b82dc141d209..4dccc72a0ed6 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -6646,6 +6646,12 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
> F: Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
> F: drivers/gpu/drm/tiny/ili9486.c
>
> +DRM DRIVER FOR ILITEK ILI9805 PANELS
> +M: Michael Trimarchi <michael at amarulasolutions.com>
> +S: Maintained
> +F: Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
> +F: drivers/gpu/drm/panel/panel-ilitek-ili9805.c
> +
> DRM DRIVER FOR JADARD JD9365DA-H3 MIPI-DSI LCD PANELS
> M: Jagan Teki <jagan at edgeble.ai>
> S: Maintained
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index d018702be3dc..dad938cf6dec 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -194,6 +194,15 @@ config DRM_PANEL_ILITEK_ILI9341
> QVGA (240x320) RGB panels. support serial & parallel rgb
> interface.
>
> +config DRM_PANEL_ILITEK_ILI9805
> + tristate "Ilitek ILI9805-based panels"
> + 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
> + Ilitek ILI9805 controller.
> +
> config DRM_PANEL_ILITEK_ILI9881C
> tristate "Ilitek ILI9881C-based panels"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index f267d932c2b5..d94a644d0a6c 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d
> obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o
> obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
> obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o
> +obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9805) += panel-ilitek-ili9805.o
> obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
> obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9882T) += panel-ilitek-ili9882t.o
> obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o
> diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9805.c b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
> new file mode 100644
> index 000000000000..e36984b46e14
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
> @@ -0,0 +1,353 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2020 BSH Hausgerate GmbH
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/device.h>
> +#include <linux/err.h>
> +#include <linux/errno.h>
> +#include <linux/fb.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include <drm/drm_mipi_dsi.h>
> +#include <drm/drm_modes.h>
> +#include <drm/drm_panel.h>
> +
> +#include <video/mipi_display.h>
> +
> +#define ILI9805_EXTCMD_CMD_SET_ENABLE_REG (0xff)
> +#define ILI9805_SETEXTC_PARAMETER1 (0xff)
> +#define ILI9805_SETEXTC_PARAMETER2 (0x98)
> +#define ILI9805_SETEXTC_PARAMETER3 (0x05)
> +
> +#define ILI9805_INSTR(_delay, ...) { \
> + .delay = (_delay), \
> + .len = sizeof((u8[]) {__VA_ARGS__}), \
> + .data = (u8[]){__VA_ARGS__} \
> + }
> +
> +struct ili9805_instr {
> + size_t len;
> + const u8 *data;
> + u32 delay;
> +};
> +
> +struct ili9805_desc {
> + const char *name;
> + const struct ili9805_instr *init;
> + const size_t init_length;
> + const struct drm_display_mode *mode;
> + u32 width_mm;
> + u32 height_mm;
> +};
> +
> +struct ili9805 {
> + struct drm_panel panel;
> + struct mipi_dsi_device *dsi;
> + const struct ili9805_desc *desc;
> +
> + struct regulator *dvdd;
> + struct regulator *avdd;
> + struct gpio_desc *reset_gpio;
> +};
> +
> +static const struct ili9805_instr gpm1780a0_init[] = {
> + ILI9805_INSTR(100, ILI9805_EXTCMD_CMD_SET_ENABLE_REG, ILI9805_SETEXTC_PARAMETER1,
> + ILI9805_SETEXTC_PARAMETER2, ILI9805_SETEXTC_PARAMETER3),
> + ILI9805_INSTR(100, 0xFD, 0x0F, 0x10, 0x44, 0x00),
> + ILI9805_INSTR(0, 0xf8, 0x18, 0x02, 0x02, 0x18, 0x02, 0x02, 0x30, 0x00,
> + 0x00, 0x30, 0x00, 0x00, 0x30, 0x00, 0x00),
> + ILI9805_INSTR(0, 0xB8, 0x62),
> + ILI9805_INSTR(0, 0xF1, 0x00),
> + ILI9805_INSTR(0, 0xF2, 0x00, 0x58, 0x40),
> + ILI9805_INSTR(0, 0xF3, 0x60, 0x83, 0x04),
> + ILI9805_INSTR(0, 0xFC, 0x04, 0x0F, 0x01),
> + ILI9805_INSTR(0, 0xEB, 0x08, 0x0F),
> + ILI9805_INSTR(0, 0xe0, 0x00, 0x08, 0x0d, 0x0e, 0x0e, 0x0d, 0x0a, 0x08, 0x04,
> + 0x08, 0x0d, 0x0f, 0x0b, 0x1c, 0x14, 0x0a),
> + ILI9805_INSTR(0, 0xe1, 0x00, 0x08, 0x0d, 0x0e, 0x0e, 0x0d, 0x0a, 0x08, 0x04,
> + 0x08, 0x0d, 0x0f, 0x0b, 0x1c, 0x14, 0x0a),
> + ILI9805_INSTR(10, 0xc1, 0x13, 0x39, 0x19, 0x06),
> + ILI9805_INSTR(10, 0xc7, 0xe5),
> + ILI9805_INSTR(10, 0xB1, 0x00, 0x12, 0x14),
> + ILI9805_INSTR(10, 0xB4, 0x02),
> + ILI9805_INSTR(0, 0xBB, 0x14, 0x55),
> + ILI9805_INSTR(0, MIPI_DCS_SET_ADDRESS_MODE, 0x08),
> + ILI9805_INSTR(0, MIPI_DCS_SET_PIXEL_FORMAT, 0x77),
> + ILI9805_INSTR(0, 0x20),
> + ILI9805_INSTR(0, 0xB0, 0x01),
> + ILI9805_INSTR(0, 0xB6, 0x31, 0x00, 0xef),
> + ILI9805_INSTR(0, 0xDF, 0x23),
> + ILI9805_INSTR(0, 0xB9, 0x02, 0x00),
> +};
> +
> +static inline struct ili9805 *panel_to_ili9805(struct drm_panel *panel)
> +{
> + return container_of(panel, struct ili9805, panel);
> +}
> +
> +static int ili9805_power_on(struct ili9805 *ctx)
> +{
> + struct mipi_dsi_device *dsi = ctx->dsi;
> + struct device *dev = &dsi->dev;
> + int ret;
> +
> + ret = regulator_enable(ctx->avdd);
> + if (ret) {
> + dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret);
> + return ret;
> + }
> +
> + ret = regulator_enable(ctx->dvdd);
> + if (ret) {
> + dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret);
> + regulator_disable(ctx->avdd);
> + return ret;
> + }
> +
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(5000, 10000);
> + gpiod_set_value(ctx->reset_gpio, 1);
> + msleep(120);
> +
> + return 0;
> +}
> +
> +static int ili9805_power_off(struct ili9805 *ctx)
> +{
> + gpiod_set_value(ctx->reset_gpio, 0);
> + regulator_disable(ctx->dvdd);
> + regulator_disable(ctx->avdd);
> +
> + return 0;
> +}
> +
> +static int ili9805_activate(struct ili9805 *ctx)
> +{
> + struct mipi_dsi_device *dsi = ctx->dsi;
> + struct device *dev = &dsi->dev;
> + int i, ret;
> +
> + for (i = 0; i < ctx->desc->init_length; i++) {
> + const struct ili9805_instr *instr = &ctx->desc->init[i];
> +
> + ret = mipi_dsi_dcs_write_buffer(ctx->dsi, instr->data, instr->len);
> + if (ret < 0)
> + return ret;
> +
> + if (instr->delay > 0)
> + msleep(instr->delay);
> + }
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
> + if (ret) {
> + dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
> + return ret;
> + }
> +
> + usleep_range(5000, 6000);
> +
> + ret = mipi_dsi_dcs_set_display_on(ctx->dsi);
> + if (ret) {
> + dev_err(dev, "Failed to set display ON (%d)\n", ret);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int ili9805_prepare(struct drm_panel *panel)
> +{
> + struct ili9805 *ctx = panel_to_ili9805(panel);
> + int ret;
> +
> + ret = ili9805_power_on(ctx);
> + if (ret)
> + return ret;
> +
> + ret = ili9805_activate(ctx);
> + if (ret) {
> + ili9805_power_off(ctx);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int ili9805_deactivate(struct ili9805 *ctx)
> +{
> + struct mipi_dsi_device *dsi = ctx->dsi;
> + struct device *dev = &dsi->dev;
> + int ret;
> +
> + ret = mipi_dsi_dcs_set_display_off(ctx->dsi);
> + if (ret < 0) {
> + dev_err(dev, "Failed to set display OFF (%d)\n", ret);
> + return ret;
> + }
> +
> + usleep_range(5000, 10000);
> +
> + ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
> + if (ret < 0) {
> + dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int ili9805_unprepare(struct drm_panel *panel)
> +{
> + struct ili9805 *ctx = panel_to_ili9805(panel);
> +
> + ili9805_deactivate(ctx);
> + ili9805_power_off(ctx);
> +
> + return 0;
> +}
> +
> +static const struct drm_display_mode gpm1780a0_timing = {
> + .clock = 26227,
> +
> + .hdisplay = 480,
> + .hsync_start = 480 + 10,
> + .hsync_end = 480 + 10 + 2,
> + .htotal = 480 + 10 + 2 + 36,
> +
> + .vdisplay = 480,
> + .vsync_start = 480 + 2,
> + .vsync_end = 480 + 10 + 4,
> + .vtotal = 480 + 2 + 4 + 10,
> +};
> +
> +static int ili9805_get_modes(struct drm_panel *panel,
> + struct drm_connector *connector)
> +{
> + struct ili9805 *ctx = panel_to_ili9805(panel);
> + struct drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
> + if (!mode) {
> + dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
> + ctx->desc->mode->hdisplay,
> + ctx->desc->mode->vdisplay,
> + drm_mode_vrefresh(ctx->desc->mode));
> + 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 = mode->width_mm;
> + connector->display_info.height_mm = mode->height_mm;
> +
> + return 1;
> +}
> +
> +static const struct drm_panel_funcs ili9805_funcs = {
> + .prepare = ili9805_prepare,
> + .unprepare = ili9805_unprepare,
> + .get_modes = ili9805_get_modes,
> +};
> +
> +static int ili9805_dsi_probe(struct mipi_dsi_device *dsi)
> +{
> + struct ili9805 *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;
> + ctx->desc = of_device_get_match_data(&dsi->dev);
> +
> + dsi->format = MIPI_DSI_FMT_RGB888;
> + dsi->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
> + MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM |
> + MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_NO_EOT_PACKET;
> + dsi->lanes = 2;
> +
> + drm_panel_init(&ctx->panel, &dsi->dev, &ili9805_funcs,
> + DRM_MODE_CONNECTOR_DSI);
> +
> + ctx->dvdd = devm_regulator_get(&dsi->dev, "dvdd");
> + if (IS_ERR(ctx->dvdd))
> + return PTR_ERR(ctx->dvdd);
> + ctx->avdd = devm_regulator_get(&dsi->dev, "avdd");
> + if (IS_ERR(ctx->avdd))
> + return PTR_ERR(ctx->avdd);
> +
> + ctx->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
> + if (IS_ERR(ctx->reset_gpio)) {
> + dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
> + return PTR_ERR(ctx->reset_gpio);
> + }
> +
> + ctx->panel.prepare_prev_first = true;
> + ret = drm_panel_of_backlight(&ctx->panel);
> + if (ret)
> + return ret;
> +
> + drm_panel_add(&ctx->panel);
> +
> + ret = mipi_dsi_attach(dsi);
> + if (ret < 0) {
> + dev_err(&dsi->dev, "mipi_dsi_attach failed: %d\n", ret);
> + drm_panel_remove(&ctx->panel);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static void ili9805_dsi_remove(struct mipi_dsi_device *dsi)
> +{
> + struct ili9805 *ctx = mipi_dsi_get_drvdata(dsi);
> + int ret;
> +
> + ret = mipi_dsi_detach(dsi);
> + if (ret < 0)
> + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n",
> + ret);
> +
> + drm_panel_remove(&ctx->panel);
> +}
> +
> +static const struct ili9805_desc gpm1780a0_desc = {
> + .init = gpm1780a0_init,
> + .init_length = ARRAY_SIZE(gpm1780a0_init),
> + .mode = &gpm1780a0_timing,
> + .width_mm = 65,
> + .height_mm = 65,
> +};
> +
> +static const struct of_device_id ili9805_of_match[] = {
> + { .compatible = "giantplus,gpm1790a0", .data = &gpm1780a0_desc },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, ili9805_of_match);
> +
> +static struct mipi_dsi_driver ili9805_dsi_driver = {
> + .probe = ili9805_dsi_probe,
> + .remove = ili9805_dsi_remove,
> + .driver = {
> + .name = "ili9805-dsi",
> + .of_match_table = ili9805_of_match,
> + },
> +};
> +module_mipi_dsi_driver(ili9805_dsi_driver);
> +
> +MODULE_AUTHOR("Matthias Proske <Matthias.Proske at bshg.com>");
> +MODULE_AUTHOR("Michael Trimarchi <michael at amarulasolutions.com>");
> +MODULE_DESCRIPTION("Ilitek ILI9805 Controller Driver");
> +MODULE_LICENSE("GPL");
Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>
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