// SPDX-License-Identifier: GPL-2.0-only
// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
//   Copyright (c) 2013, The Linux Foundation. All rights reserved.
//   Copyright (c) 2024, Neil Armstrong <neil.armstrong@linaro.org>

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

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

struct boe_tv101wum_ll2 {
        struct drm_panel panel;
        struct mipi_dsi_device *dsi;
        struct gpio_desc *reset_gpio;
        struct regulator_bulk_data *supplies;
};

static const struct regulator_bulk_data boe_tv101wum_ll2_supplies[] = {
        { .supply = "vsp" },
        { .supply = "vsn" },
};

static inline struct boe_tv101wum_ll2 *to_boe_tv101wum_ll2(struct drm_panel *panel)
{
        return container_of(panel, struct boe_tv101wum_ll2, panel);
}

static void boe_tv101wum_ll2_reset(struct boe_tv101wum_ll2 *ctx)
{
        gpiod_set_value_cansleep(ctx->reset_gpio, 0);
        usleep_range(5000, 6000);
        gpiod_set_value_cansleep(ctx->reset_gpio, 1);
        usleep_range(5000, 6000);
        gpiod_set_value_cansleep(ctx->reset_gpio, 0);

        msleep(120);
}

static int boe_tv101wum_ll2_on(struct boe_tv101wum_ll2 *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_exit_sleep_mode_multi(&dsi_ctx);

        mipi_dsi_msleep(&dsi_ctx, 120);

        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0e);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0xff, 0x81, 0x68, 0x6c, 0x22,
                                     0x6d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x23);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x00, 0x00);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x94, 0x2c, 0x00);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x19);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xa2, 0x38);

        mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0c);
        mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x80, 0xfd);
        mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x00);

        mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);

        mipi_dsi_msleep(&dsi_ctx, 20);

        return dsi_ctx.accum_err;
}

static void boe_tv101wum_ll2_off(struct boe_tv101wum_ll2 *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, 70);

        mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);

        mipi_dsi_msleep(&dsi_ctx, 20);

        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x5a);
        mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x05, 0x5a);

        mipi_dsi_msleep(&dsi_ctx, 150);
}

static int boe_tv101wum_ll2_prepare(struct drm_panel *panel)
{
        struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);
        int ret;

        ret = regulator_bulk_enable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
                                    ctx->supplies);
        if (ret < 0)
                return ret;

        boe_tv101wum_ll2_reset(ctx);

        ret = boe_tv101wum_ll2_on(ctx);
        if (ret < 0) {
                gpiod_set_value_cansleep(ctx->reset_gpio, 1);
                regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
                                       ctx->supplies);
                return ret;
        }

        return 0;
}

static int boe_tv101wum_ll2_unprepare(struct drm_panel *panel)
{
        struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);

        /* Ignore errors on failure, in any case set gpio and disable regulators */
        boe_tv101wum_ll2_off(ctx);

        gpiod_set_value_cansleep(ctx->reset_gpio, 1);

        regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),
                               ctx->supplies);

        return 0;
}

static const struct drm_display_mode boe_tv101wum_ll2_mode = {
        .clock = (1200 + 27 + 8 + 12) * (1920 + 155 + 8 + 32) * 60 / 1000,
        .hdisplay = 1200,
        .hsync_start = 1200 + 27,
        .hsync_end = 1200 + 27 + 8,
        .htotal = 1200 + 27 + 8 + 12,
        .vdisplay = 1920,
        .vsync_start = 1920 + 155,
        .vsync_end = 1920 + 155 + 8,
        .vtotal = 1920 + 155 + 8 + 32,
        .width_mm = 136,
        .height_mm = 217,
        .type = DRM_MODE_TYPE_DRIVER,
};

static int boe_tv101wum_ll2_get_modes(struct drm_panel *panel,
                                      struct drm_connector *connector)
{
        /* We do not set display_info.bpc since unset value is bpc=8 by default */
        return drm_connector_helper_get_modes_fixed(connector, &boe_tv101wum_ll2_mode);
}

static const struct drm_panel_funcs boe_tv101wum_ll2_panel_funcs = {
        .prepare = boe_tv101wum_ll2_prepare,
        .unprepare = boe_tv101wum_ll2_unprepare,
        .get_modes = boe_tv101wum_ll2_get_modes,
};

static int boe_tv101wum_ll2_probe(struct mipi_dsi_device *dsi)
{
        struct device *dev = &dsi->dev;
        struct boe_tv101wum_ll2 *ctx;
        int ret;

        ctx = devm_drm_panel_alloc(dev, struct boe_tv101wum_ll2, panel,
                                   &boe_tv101wum_ll2_panel_funcs,
                                   DRM_MODE_CONNECTOR_DSI);
        if (IS_ERR(ctx))
                return PTR_ERR(ctx);

        ret = devm_regulator_bulk_get_const(&dsi->dev,
                                        ARRAY_SIZE(boe_tv101wum_ll2_supplies),
                                        boe_tv101wum_ll2_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))
                return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
                                     "Failed to get 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_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
                          MIPI_DSI_MODE_VIDEO_HSE;

        ctx->panel.prepare_prev_first = true;

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

        drm_panel_add(&ctx->panel);

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

        return 0;
}

static void boe_tv101wum_ll2_remove(struct mipi_dsi_device *dsi)
{
        struct boe_tv101wum_ll2 *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 boe_tv101wum_ll2_of_match[] = {
        { .compatible = "boe,tv101wum-ll2" },
        { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, boe_tv101wum_ll2_of_match);

static struct mipi_dsi_driver boe_tv101wum_ll2_driver = {
        .probe = boe_tv101wum_ll2_probe,
        .remove = boe_tv101wum_ll2_remove,
        .driver = {
                .name = "panel-boe-tv101wum_ll2",
                .of_match_table = boe_tv101wum_ll2_of_match,
        },
};
module_mipi_dsi_driver(boe_tv101wum_ll2_driver);

MODULE_DESCRIPTION("DRM driver for BOE TV101WUM-LL2 Panel");
MODULE_LICENSE("GPL");