// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2019, The Linux Foundation. All rights reserved.
 */

#include <linux/delay.h>
#include <linux/module.h>
#include <linux/property.h>
#include <linux/mod_devicetable.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>

#include <video/mipi_display.h>

#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>

struct visionox_rm69299_panel_desc {
	const struct drm_display_mode *mode;
	const u8 *init_seq;
	unsigned int init_seq_len;
};

struct visionox_rm69299 {
	struct drm_panel panel;
	struct regulator_bulk_data *supplies;
	struct gpio_desc *reset_gpio;
	struct mipi_dsi_device *dsi;
	const struct visionox_rm69299_panel_desc *desc;
};

static const struct regulator_bulk_data visionox_rm69299_supplies[] = {
	{ .supply = "vdda", .init_load_uA = 32000 },
	{ .supply = "vdd3p3", .init_load_uA = 13200 },
};

static const u8 visionox_rm69299_1080x2248_60hz_init_seq[][2] = {
	{ 0xfe, 0x00 }, { 0xc2, 0x08 }, { 0x35, 0x00 }, { 0x51, 0xff },
};

static const u8 visionox_rm69299_1080x2160_60hz_init_seq[][2] = {
	{ 0xfe, 0x40 }, { 0x05, 0x04 }, { 0x06, 0x08 }, { 0x08, 0x04 },
	{ 0x09, 0x08 }, { 0x0a, 0x07 }, { 0x0b, 0xcc }, { 0x0c, 0x07 },
	{ 0x0d, 0x90 }, { 0x0f, 0x87 }, { 0x20, 0x8d }, { 0x21, 0x8d },
	{ 0x24, 0x05 }, { 0x26, 0x05 }, { 0x28, 0x05 }, { 0x2a, 0x05 },
	{ 0x2d, 0x28 }, { 0x2f, 0x28 }, { 0x30, 0x32 }, { 0x31, 0x32 },
	{ 0x37, 0x80 }, { 0x38, 0x30 }, { 0x39, 0xa8 }, { 0x46, 0x48 },
	{ 0x47, 0x48 }, { 0x6b, 0x10 }, { 0x6f, 0x02 }, { 0x74, 0x2b },
	{ 0x80, 0x1a }, { 0xfe, 0x40 }, { 0x93, 0x10 }, { 0x16, 0x00 },
	{ 0x85, 0x07 }, { 0x84, 0x01 }, { 0x86, 0x0f }, { 0x87, 0x05 },
	{ 0x8c, 0x00 }, { 0x88, 0x2e }, { 0x89, 0x2e }, { 0x8b, 0x09 },
	{ 0x95, 0x00 }, { 0x91, 0x00 }, { 0x90, 0x00 }, { 0x8d, 0xd0 },
	{ 0x8a, 0x03 }, { 0xfe, 0xa0 }, { 0x13, 0x00 }, { 0x33, 0x00 },
	{ 0x0b, 0x33 }, { 0x36, 0x1e }, { 0x31, 0x88 }, { 0x32, 0x88 },
	{ 0x37, 0xf1 }, { 0xfe, 0x50 }, { 0x00, 0x00 }, { 0x01, 0x00 },
	{ 0x02, 0x00 }, { 0x03, 0xe9 }, { 0x04, 0x00 }, { 0x05, 0xf6 },
	{ 0x06, 0x01 }, { 0x07, 0x2c }, { 0x08, 0x01 }, { 0x09, 0x62 },
	{ 0x0a, 0x01 }, { 0x0b, 0x98 }, { 0x0c, 0x01 }, { 0x0d, 0xbf },
	{ 0x0e, 0x01 }, { 0x0f, 0xf6 }, { 0x10, 0x02 }, { 0x11, 0x24 },
	{ 0x12, 0x02 }, { 0x13, 0x4e }, { 0x14, 0x02 }, { 0x15, 0x70 },
	{ 0x16, 0x02 }, { 0x17, 0xaf }, { 0x18, 0x02 }, { 0x19, 0xe2 },
	{ 0x1a, 0x03 }, { 0x1b, 0x1f }, { 0x1c, 0x03 }, { 0x1d, 0x52 },
	{ 0x1e, 0x03 }, { 0x1f, 0x82 }, { 0x20, 0x03 }, { 0x21, 0xb6 },
	{ 0x22, 0x03 }, { 0x23, 0xf0 }, { 0x24, 0x04 }, { 0x25, 0x1f },
	{ 0x26, 0x04 }, { 0x27, 0x37 }, { 0x28, 0x04 }, { 0x29, 0x59 },
	{ 0x2a, 0x04 }, { 0x2b, 0x68 }, { 0x30, 0x04 }, { 0x31, 0x85 },
	{ 0x32, 0x04 }, { 0x33, 0xa2 }, { 0x34, 0x04 }, { 0x35, 0xbc },
	{ 0x36, 0x04 }, { 0x37, 0xd8 }, { 0x38, 0x04 }, { 0x39, 0xf4 },
	{ 0x3a, 0x05 }, { 0x3b, 0x0e }, { 0x40, 0x05 }, { 0x41, 0x13 },
	{ 0x42, 0x05 }, { 0x43, 0x1f }, { 0x44, 0x05 }, { 0x45, 0x1f },
	{ 0x46, 0x00 }, { 0x47, 0x00 }, { 0x48, 0x01 }, { 0x49, 0x43 },
	{ 0x4a, 0x01 }, { 0x4b, 0x4c }, { 0x4c, 0x01 }, { 0x4d, 0x6f },
	{ 0x4e, 0x01 }, { 0x4f, 0x92 }, { 0x50, 0x01 }, { 0x51, 0xb5 },
	{ 0x52, 0x01 }, { 0x53, 0xd4 }, { 0x58, 0x02 }, { 0x59, 0x06 },
	{ 0x5a, 0x02 }, { 0x5b, 0x33 }, { 0x5c, 0x02 }, { 0x5d, 0x59 },
	{ 0x5e, 0x02 }, { 0x5f, 0x7d }, { 0x60, 0x02 }, { 0x61, 0xbd },
	{ 0x62, 0x02 }, { 0x63, 0xf7 }, { 0x64, 0x03 }, { 0x65, 0x31 },
	{ 0x66, 0x03 }, { 0x67, 0x63 }, { 0x68, 0x03 }, { 0x69, 0x9d },
	{ 0x6a, 0x03 }, { 0x6b, 0xd2 }, { 0x6c, 0x04 }, { 0x6d, 0x05 },
	{ 0x6e, 0x04 }, { 0x6f, 0x38 }, { 0x70, 0x04 }, { 0x71, 0x51 },
	{ 0x72, 0x04 }, { 0x73, 0x70 }, { 0x74, 0x04 }, { 0x75, 0x85 },
	{ 0x76, 0x04 }, { 0x77, 0xa1 }, { 0x78, 0x04 }, { 0x79, 0xc0 },
	{ 0x7a, 0x04 }, { 0x7b, 0xd8 }, { 0x7c, 0x04 }, { 0x7d, 0xf2 },
	{ 0x7e, 0x05 }, { 0x7f, 0x10 }, { 0x80, 0x05 }, { 0x81, 0x21 },
	{ 0x82, 0x05 }, { 0x83, 0x2e }, { 0x84, 0x05 }, { 0x85, 0x3a },
	{ 0x86, 0x05 }, { 0x87, 0x3e }, { 0x88, 0x00 }, { 0x89, 0x00 },
	{ 0x8a, 0x01 }, { 0x8b, 0x86 }, { 0x8c, 0x01 }, { 0x8d, 0x8f },
	{ 0x8e, 0x01 }, { 0x8f, 0xb3 }, { 0x90, 0x01 }, { 0x91, 0xd7 },
	{ 0x92, 0x01 }, { 0x93, 0xfb }, { 0x94, 0x02 }, { 0x95, 0x18 },
	{ 0x96, 0x02 }, { 0x97, 0x4f }, { 0x98, 0x02 }, { 0x99, 0x7e },
	{ 0x9a, 0x02 }, { 0x9b, 0xa6 }, { 0x9c, 0x02 }, { 0x9d, 0xcf },
	{ 0x9e, 0x03 }, { 0x9f, 0x14 }, { 0xa4, 0x03 }, { 0xa5, 0x52 },
	{ 0xa6, 0x03 }, { 0xa7, 0x93 }, { 0xac, 0x03 }, { 0xad, 0xcf },
	{ 0xae, 0x04 }, { 0xaf, 0x08 }, { 0xb0, 0x04 }, { 0xb1, 0x42 },
	{ 0xb2, 0x04 }, { 0xb3, 0x7f }, { 0xb4, 0x04 }, { 0xb5, 0xb4 },
	{ 0xb6, 0x04 }, { 0xb7, 0xcc }, { 0xb8, 0x04 }, { 0xb9, 0xf2 },
	{ 0xba, 0x05 }, { 0xbb, 0x0c }, { 0xbc, 0x05 }, { 0xbd, 0x26 },
	{ 0xbe, 0x05 }, { 0xbf, 0x4b }, { 0xc0, 0x05 }, { 0xc1, 0x64 },
	{ 0xc2, 0x05 }, { 0xc3, 0x83 }, { 0xc4, 0x05 }, { 0xc5, 0xa1 },
	{ 0xc6, 0x05 }, { 0xc7, 0xba }, { 0xc8, 0x05 }, { 0xc9, 0xc4 },
	{ 0xca, 0x05 }, { 0xcb, 0xd5 }, { 0xcc, 0x05 }, { 0xcd, 0xd5 },
	{ 0xce, 0x00 }, { 0xcf, 0xce }, { 0xd0, 0x00 }, { 0xd1, 0xdb },
	{ 0xd2, 0x01 }, { 0xd3, 0x32 }, { 0xd4, 0x01 }, { 0xd5, 0x3b },
	{ 0xd6, 0x01 }, { 0xd7, 0x74 }, { 0xd8, 0x01 }, { 0xd9, 0x7d },
	{ 0xfe, 0x60 }, { 0x00, 0xcc }, { 0x01, 0x0f }, { 0x02, 0xff },
	{ 0x03, 0x01 }, { 0x04, 0x00 }, { 0x05, 0x02 }, { 0x06, 0x00 },
	{ 0x07, 0x00 }, { 0x09, 0xc4 }, { 0x0a, 0x00 }, { 0x0b, 0x04 },
	{ 0x0c, 0x01 }, { 0x0d, 0x00 }, { 0x0e, 0x04 }, { 0x0f, 0x00 },
	{ 0x10, 0x71 }, { 0x12, 0xc4 }, { 0x13, 0x00 }, { 0x14, 0x04 },
	{ 0x15, 0x01 }, { 0x16, 0x00 }, { 0x17, 0x06 }, { 0x18, 0x00 },
	{ 0x19, 0x71 }, { 0x1b, 0xc4 }, { 0x1c, 0x00 }, { 0x1d, 0x02 },
	{ 0x1e, 0x00 }, { 0x1f, 0x00 }, { 0x20, 0x08 }, { 0x21, 0x66 },
	{ 0x22, 0xb4 }, { 0x24, 0xc4 }, { 0x25, 0x00 }, { 0x26, 0x02 },
	{ 0x27, 0x00 }, { 0x28, 0x00 }, { 0x29, 0x07 }, { 0x2a, 0x66 },
	{ 0x2b, 0xb4 }, { 0x2f, 0xc4 }, { 0x30, 0x00 }, { 0x31, 0x04 },
	{ 0x32, 0x01 }, { 0x33, 0x00 }, { 0x34, 0x03 }, { 0x35, 0x00 },
	{ 0x36, 0x71 }, { 0x38, 0xc4 }, { 0x39, 0x00 }, { 0x3a, 0x04 },
	{ 0x3b, 0x01 }, { 0x3d, 0x00 }, { 0x3f, 0x05 }, { 0x40, 0x00 },
	{ 0x41, 0x71 }, { 0x83, 0xce }, { 0x84, 0x02 }, { 0x85, 0x20 },
	{ 0x86, 0xdc }, { 0x87, 0x00 }, { 0x88, 0x04 }, { 0x89, 0x00 },
	{ 0x8a, 0xbb }, { 0x8b, 0x80 }, { 0xc7, 0x0e }, { 0xc8, 0x05 },
	{ 0xc9, 0x1f }, { 0xca, 0x06 }, { 0xcb, 0x00 }, { 0xcc, 0x03 },
	{ 0xcd, 0x04 }, { 0xce, 0x1f }, { 0xcf, 0x1f }, { 0xd0, 0x1f },
	{ 0xd1, 0x1f }, { 0xd2, 0x1f }, { 0xd3, 0x1f }, { 0xd4, 0x1f },
	{ 0xd5, 0x1f }, { 0xd6, 0x1f }, { 0xd7, 0x17 }, { 0xd8, 0x1f },
	{ 0xd9, 0x16 }, { 0xda, 0x1f }, { 0xdb, 0x0e }, { 0xdc, 0x01 },
	{ 0xdd, 0x1f }, { 0xde, 0x02 }, { 0xdf, 0x00 }, { 0xe0, 0x03 },
	{ 0xe1, 0x04 }, { 0xe2, 0x1f }, { 0xe3, 0x1f }, { 0xe4, 0x1f },
	{ 0xe5, 0x1f }, { 0xe6, 0x1f }, { 0xe7, 0x1f }, { 0xe8, 0x1f },
	{ 0xe9, 0x1f }, { 0xea, 0x1f }, { 0xeb, 0x17 }, { 0xec, 0x1f },
	{ 0xed, 0x16 }, { 0xee, 0x1f }, { 0xef, 0x03 }, { 0xfe, 0x70 },
	{ 0x5a, 0x0b }, { 0x5b, 0x0b }, { 0x5c, 0x55 }, { 0x5d, 0x24 },
	{ 0xfe, 0x90 }, { 0x12, 0x24 }, { 0x13, 0x49 }, { 0x14, 0x92 },
	{ 0x15, 0x86 }, { 0x16, 0x61 }, { 0x17, 0x18 }, { 0x18, 0x24 },
	{ 0x19, 0x49 }, { 0x1a, 0x92 }, { 0x1b, 0x86 }, { 0x1c, 0x61 },
	{ 0x1d, 0x18 }, { 0x1e, 0x24 }, { 0x1f, 0x49 }, { 0x20, 0x92 },
	{ 0x21, 0x86 }, { 0x22, 0x61 }, { 0x23, 0x18 }, { 0xfe, 0x40 },
	{ 0x0e, 0x10 }, { 0xfe, 0xa0 }, { 0x04, 0x80 }, { 0x16, 0x00 },
	{ 0x26, 0x10 }, { 0x2f, 0x37 }, { 0xfe, 0xd0 }, { 0x06, 0x0f },
	{ 0x4b, 0x00 }, { 0x56, 0x4a }, { 0xfe, 0x00 }, { 0xc2, 0x09 },
	{ 0x35, 0x00 }, { 0xfe, 0x70 }, { 0x7d, 0x61 }, { 0x7f, 0x00 },
	{ 0x7e, 0x4e }, { 0x52, 0x2c }, { 0x49, 0x00 }, { 0x4a, 0x00 },
	{ 0x4b, 0x00 }, { 0x4c, 0x00 }, { 0x4d, 0xe8 }, { 0x4e, 0x25 },
	{ 0x4f, 0x6e }, { 0x50, 0xae }, { 0x51, 0x2f }, { 0xad, 0xf4 },
	{ 0xae, 0x8f }, { 0xaf, 0x00 }, { 0xb0, 0x54 }, { 0xb1, 0x3a },
	{ 0xb2, 0x00 }, { 0xb3, 0x00 }, { 0xb4, 0x00 }, { 0xb5, 0x00 },
	{ 0xb6, 0x18 }, { 0xb7, 0x30 }, { 0xb8, 0x4a }, { 0xb9, 0x98 },
	{ 0xba, 0x30 }, { 0xbb, 0x60 }, { 0xbc, 0x50 }, { 0xbd, 0x00 },
	{ 0xbe, 0x00 }, { 0xbf, 0x39 }, { 0xfe, 0x00 }, { 0x51, 0x66 },
};

static inline struct visionox_rm69299 *panel_to_ctx(struct drm_panel *panel)
{
	return container_of(panel, struct visionox_rm69299, panel);
}

static int visionox_rm69299_power_on(struct visionox_rm69299 *ctx)
{
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(visionox_rm69299_supplies),
				    ctx->supplies);
	if (ret < 0)
		return ret;

	/*
	 * Reset sequence of visionox panel requires the panel to be
	 * out of reset for 10ms, followed by being held in reset
	 * for 10ms and then out again
	 */
	gpiod_set_value(ctx->reset_gpio, 1);
	usleep_range(10000, 20000);
	gpiod_set_value(ctx->reset_gpio, 0);
	usleep_range(10000, 20000);
	gpiod_set_value(ctx->reset_gpio, 1);
	usleep_range(10000, 20000);

	return 0;
}

static int visionox_rm69299_power_off(struct visionox_rm69299 *ctx)
{
	gpiod_set_value(ctx->reset_gpio, 0);

	return regulator_bulk_disable(ARRAY_SIZE(visionox_rm69299_supplies),
				      ctx->supplies);
}

static int visionox_rm69299_unprepare(struct drm_panel *panel)
{
	struct visionox_rm69299 *ctx = panel_to_ctx(panel);
	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };

	ctx->dsi->mode_flags = 0;

	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);

	/* 120ms delay required here as per DCS spec */
	mipi_dsi_msleep(&dsi_ctx, 120);

	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);

	return visionox_rm69299_power_off(ctx);
}

static int visionox_rm69299_prepare(struct drm_panel *panel)
{
	struct visionox_rm69299 *ctx = panel_to_ctx(panel);
	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
	int ret, i;

	ret = visionox_rm69299_power_on(ctx);
	if (ret < 0)
		return ret;

	ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;

	for (i = 0; i < ctx->desc->init_seq_len; i++)
		mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, &ctx->desc->init_seq[i * 2], 2);

	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);

	/* Per DSI spec wait 120ms after sending exit sleep DCS command */
	mipi_dsi_msleep(&dsi_ctx, 120);

	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);

	/* Per DSI spec wait 120ms after sending set_display_on DCS command */
	mipi_dsi_msleep(&dsi_ctx, 120);

	return dsi_ctx.accum_err;
}

static const struct drm_display_mode visionox_rm69299_1080x2248_60hz = {
	.name = "1080x2248",
	.clock = 158695,
	.hdisplay = 1080,
	.hsync_start = 1080 + 26,
	.hsync_end = 1080 + 26 + 2,
	.htotal = 1080 + 26 + 2 + 36,
	.vdisplay = 2248,
	.vsync_start = 2248 + 56,
	.vsync_end = 2248 + 56 + 4,
	.vtotal = 2248 + 56 + 4 + 4,
	.flags = 0,
};

static const struct drm_display_mode visionox_rm69299_1080x2160_60hz = {
	.clock = 158695,
	.hdisplay = 1080,
	.hsync_start = 1080 + 26,
	.hsync_end = 1080 + 26 + 2,
	.htotal = 1080 + 26 + 2 + 36,
	.vdisplay = 2160,
	.vsync_start = 2160 + 8,
	.vsync_end = 2160 + 8 + 4,
	.vtotal = 2160 + 8 + 4 + 4,
	.flags = 0,
};

static int visionox_rm69299_get_modes(struct drm_panel *panel,
				      struct drm_connector *connector)
{
	struct visionox_rm69299 *ctx = panel_to_ctx(panel);
	struct drm_display_mode *mode;

	mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
	if (!mode) {
		dev_err(ctx->panel.dev, "failed to create a new display mode\n");
		return 0;
	}

	connector->display_info.width_mm = 74;
	connector->display_info.height_mm = 131;
	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
	drm_mode_probed_add(connector, mode);

	return 1;
}

static const struct drm_panel_funcs visionox_rm69299_drm_funcs = {
	.unprepare = visionox_rm69299_unprepare,
	.prepare = visionox_rm69299_prepare,
	.get_modes = visionox_rm69299_get_modes,
};

static int visionox_rm69299_probe(struct mipi_dsi_device *dsi)
{
	struct device *dev = &dsi->dev;
	struct visionox_rm69299 *ctx;
	int ret;

	ctx = devm_drm_panel_alloc(dev, struct visionox_rm69299, panel,
				   &visionox_rm69299_drm_funcs,
				   DRM_MODE_CONNECTOR_DSI);
	if (IS_ERR(ctx))
		return PTR_ERR(ctx);

	ctx->desc = device_get_match_data(dev);
	if (!ctx->desc)
		return -EINVAL;

	mipi_dsi_set_drvdata(dsi, ctx);

	ctx->dsi = dsi;

	ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(visionox_rm69299_supplies),
					    visionox_rm69299_supplies, &ctx->supplies);
	if (ret < 0)
		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_add(&ctx->panel);

	dsi->lanes = 4;
	dsi->format = MIPI_DSI_FMT_RGB888;
	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM |
			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
	ret = mipi_dsi_attach(dsi);
	if (ret < 0) {
		dev_err(dev, "dsi attach failed ret = %d\n", ret);
		goto err_dsi_attach;
	}

	return 0;

err_dsi_attach:
	drm_panel_remove(&ctx->panel);
	return ret;
}

static void visionox_rm69299_remove(struct mipi_dsi_device *dsi)
{
	struct visionox_rm69299 *ctx = mipi_dsi_get_drvdata(dsi);

	mipi_dsi_detach(ctx->dsi);
	drm_panel_remove(&ctx->panel);
}

const struct visionox_rm69299_panel_desc visionox_rm69299_1080p_display_desc = {
	.mode = &visionox_rm69299_1080x2248_60hz,
	.init_seq = (const u8 *)visionox_rm69299_1080x2248_60hz_init_seq,
	.init_seq_len = ARRAY_SIZE(visionox_rm69299_1080x2248_60hz_init_seq),
};

const struct visionox_rm69299_panel_desc visionox_rm69299_shift_desc = {
	.mode = &visionox_rm69299_1080x2160_60hz,
	.init_seq = (const u8 *)visionox_rm69299_1080x2160_60hz_init_seq,
	.init_seq_len = ARRAY_SIZE(visionox_rm69299_1080x2160_60hz_init_seq),
};

static const struct of_device_id visionox_rm69299_of_match[] = {
	{ .compatible = "visionox,rm69299-1080p-display",
	  .data = &visionox_rm69299_1080p_display_desc },
	{ .compatible = "visionox,rm69299-shift",
	  .data = &visionox_rm69299_shift_desc },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, visionox_rm69299_of_match);

static struct mipi_dsi_driver visionox_rm69299_driver = {
	.driver = {
		.name = "panel-visionox-rm69299",
		.of_match_table = visionox_rm69299_of_match,
	},
	.probe = visionox_rm69299_probe,
	.remove = visionox_rm69299_remove,
};
module_mipi_dsi_driver(visionox_rm69299_driver);

MODULE_DESCRIPTION("Visionox RM69299 DSI Panel Driver");
MODULE_LICENSE("GPL v2");