// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2022 Konrad Dybcio <konrad.dybcio@somainline.org>
 *
 * Generated with linux-mdss-dsi-panel-driver-generator with a
 * substantial amount of manual adjustments.
 *
 * SONY Downstream kernel calls this one:
 * - "JDI ID3" for Akari  (XZ2)
 * - "JDI ID4" for Apollo (XZ2 Compact)
 */

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.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>

enum {
        TYPE_TAMA_60HZ,
        /*
         * Leaving room for expansion - SONY very often uses
         * *truly reliably* overclockable panels on their flagships!
         */
};

struct sony_td4353_jdi {
        struct drm_panel panel;
        struct mipi_dsi_device *dsi;
        struct regulator_bulk_data supplies[3];
        struct gpio_desc *panel_reset_gpio;
        struct gpio_desc *touch_reset_gpio;
        int type;
};

static inline struct sony_td4353_jdi *to_sony_td4353_jdi(struct drm_panel *panel)
{
        return container_of(panel, struct sony_td4353_jdi, panel);
}

static int sony_td4353_jdi_on(struct sony_td4353_jdi *ctx)
{
        struct mipi_dsi_device *dsi = ctx->dsi;
        struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };

        dsi->mode_flags |= MIPI_DSI_MODE_LPM;

        mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 1080 - 1);
        mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 2160 - 1);
        mipi_dsi_dcs_set_tear_scanline_multi(&dsi_ctx, 0);
        mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);

        mipi_dsi_dcs_set_pixel_format_multi(&dsi_ctx, 0x77);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_PARTIAL_ROWS,
                                     0x00, 0x00, 0x08, 0x6f);

        mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
        mipi_dsi_msleep(&dsi_ctx, 70);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_MEMORY_START);
        mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);

        return dsi_ctx.accum_err;
}

static void sony_td4353_jdi_off(struct sony_td4353_jdi *ctx)
{
        struct mipi_dsi_device *dsi = ctx->dsi;
        struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };

        dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

        mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
        mipi_dsi_msleep(&dsi_ctx, 22);
        mipi_dsi_dcs_set_tear_off_multi(&dsi_ctx);
        mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
        mipi_dsi_msleep(&dsi_ctx, 80);
}

static void sony_td4353_assert_reset_gpios(struct sony_td4353_jdi *ctx, int mode)
{
        gpiod_set_value_cansleep(ctx->touch_reset_gpio, mode);
        gpiod_set_value_cansleep(ctx->panel_reset_gpio, mode);
        usleep_range(5000, 5100);
}

static int sony_td4353_jdi_prepare(struct drm_panel *panel)
{
        struct sony_td4353_jdi *ctx = to_sony_td4353_jdi(panel);
        int ret;

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

        msleep(100);

        sony_td4353_assert_reset_gpios(ctx, 1);

        ret = sony_td4353_jdi_on(ctx);
        if (ret < 0) {
                sony_td4353_assert_reset_gpios(ctx, 0);
                regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
                return ret;
        }

        return 0;
}

static int sony_td4353_jdi_unprepare(struct drm_panel *panel)
{
        struct sony_td4353_jdi *ctx = to_sony_td4353_jdi(panel);

        sony_td4353_jdi_off(ctx);

        sony_td4353_assert_reset_gpios(ctx, 0);
        regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);

        return 0;
}

static const struct drm_display_mode sony_td4353_jdi_mode_tama_60hz = {
        .clock = (1080 + 4 + 8 + 8) * (2160 + 259 + 8 + 8) * 60 / 1000,
        .hdisplay = 1080,
        .hsync_start = 1080 + 4,
        .hsync_end = 1080 + 4 + 8,
        .htotal = 1080 + 4 + 8 + 8,
        .vdisplay = 2160,
        .vsync_start = 2160 + 259,
        .vsync_end = 2160 + 259 + 8,
        .vtotal = 2160 + 259 + 8 + 8,
        .width_mm = 64,
        .height_mm = 128,
};

static int sony_td4353_jdi_get_modes(struct drm_panel *panel,
                                   struct drm_connector *connector)
{
        struct sony_td4353_jdi *ctx = to_sony_td4353_jdi(panel);
        struct drm_display_mode *mode = NULL;

        if (ctx->type == TYPE_TAMA_60HZ)
                mode = drm_mode_duplicate(connector->dev, &sony_td4353_jdi_mode_tama_60hz);
        else
                return -EINVAL;

        if (!mode)
                return -ENOMEM;

        drm_mode_set_name(mode);

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

        return 1;
}

static const struct drm_panel_funcs sony_td4353_jdi_panel_funcs = {
        .prepare = sony_td4353_jdi_prepare,
        .unprepare = sony_td4353_jdi_unprepare,
        .get_modes = sony_td4353_jdi_get_modes,
};

static int sony_td4353_jdi_probe(struct mipi_dsi_device *dsi)
{
        struct device *dev = &dsi->dev;
        struct sony_td4353_jdi *ctx;
        int ret;

        ctx = devm_drm_panel_alloc(dev, struct sony_td4353_jdi, panel,
                                   &sony_td4353_jdi_panel_funcs,
                                   DRM_MODE_CONNECTOR_DSI);
        if (IS_ERR(ctx))
                return PTR_ERR(ctx);

        ctx->type = (uintptr_t)of_device_get_match_data(dev);

        ctx->supplies[0].supply = "vddio";
        ctx->supplies[1].supply = "vsp";
        ctx->supplies[2].supply = "vsn";
        ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
                                      ctx->supplies);
        if (ret < 0)
                return dev_err_probe(dev, ret, "Failed to get regulators\n");

        ctx->panel_reset_gpio = devm_gpiod_get(dev, "panel-reset", GPIOD_ASIS);
        if (IS_ERR(ctx->panel_reset_gpio))
                return dev_err_probe(dev, PTR_ERR(ctx->panel_reset_gpio),
                                     "Failed to get panel-reset-gpios\n");

        ctx->touch_reset_gpio = devm_gpiod_get(dev, "touch-reset", GPIOD_ASIS);
        if (IS_ERR(ctx->touch_reset_gpio))
                return dev_err_probe(dev, PTR_ERR(ctx->touch_reset_gpio),
                                     "Failed to get touch-reset-gpios\n");

        ctx->dsi = dsi;
        mipi_dsi_set_drvdata(dsi, ctx);

        dsi->lanes = 4;
        dsi->format = MIPI_DSI_FMT_RGB888;
        dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS;

        ret = drm_panel_of_backlight(&ctx->panel);
        if (ret)
                return dev_err_probe(dev, ret, "Failed to get backlight\n");

        ctx->panel.prepare_prev_first = true;

        drm_panel_add(&ctx->panel);

        ret = mipi_dsi_attach(dsi);
        if (ret < 0) {
                dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
                drm_panel_remove(&ctx->panel);
                return ret;
        }

        return 0;
}

static void sony_td4353_jdi_remove(struct mipi_dsi_device *dsi)
{
        struct sony_td4353_jdi *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 of_device_id sony_td4353_jdi_of_match[] = {
        { .compatible = "sony,td4353-jdi-tama", .data = (void *)TYPE_TAMA_60HZ },
        { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sony_td4353_jdi_of_match);

static struct mipi_dsi_driver sony_td4353_jdi_driver = {
        .probe = sony_td4353_jdi_probe,
        .remove = sony_td4353_jdi_remove,
        .driver = {
                .name = "panel-sony-td4353-jdi",
                .of_match_table = sony_td4353_jdi_of_match,
        },
};
module_mipi_dsi_driver(sony_td4353_jdi_driver);

MODULE_AUTHOR("Konrad Dybcio <konrad.dybcio@somainline.org>");
MODULE_DESCRIPTION("DRM panel driver for SONY Xperia XZ2/XZ2c JDI panel");
MODULE_LICENSE("GPL");