// SPDX-License-Identifier: GPL-2.0-only
/*
 * Ilitek ILI9341 TFT LCD drm_panel driver.
 *
 * This panel can be configured to support:
 * - 16-bit parallel RGB interface
 * - 18-bit parallel RGB interface
 * - 4-line serial spi interface
 *
 * Copyright (C) 2021 Dillon Min <dillon.minfei@gmail.com>
 *
 * For dbi+dpi part:
 * Derived from drivers/drm/gpu/panel/panel-ilitek-ili9322.c
 * the reuse of DBI abstraction part referred from Linus's patch
 * "drm/panel: s6e63m0: Switch to DBI abstraction for SPI"
 */

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

#include <video/mipi_display.h>

#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_dma.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_mipi_dbi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
#include <drm/drm_print.h>

#define ILI9341_RGB_INTERFACE  0xb0   /* RGB Interface Signal Control */
#define ILI9341_FRC            0xb1   /* Frame Rate Control register */
#define ILI9341_DFC            0xb6   /* Display Function Control register */
#define ILI9341_POWER1         0xc0   /* Power Control 1 register */
#define ILI9341_POWER2         0xc1   /* Power Control 2 register */
#define ILI9341_VCOM1          0xc5   /* VCOM Control 1 register */
#define ILI9341_VCOM2          0xc7   /* VCOM Control 2 register */
#define ILI9341_POWERA         0xcb   /* Power control A register */
#define ILI9341_POWERB         0xcf   /* Power control B register */
#define ILI9341_PGAMMA         0xe0   /* Positive Gamma Correction register */
#define ILI9341_NGAMMA         0xe1   /* Negative Gamma Correction register */
#define ILI9341_DTCA           0xe8   /* Driver timing control A */
#define ILI9341_DTCB           0xea   /* Driver timing control B */
#define ILI9341_POWER_SEQ      0xed   /* Power on sequence register */
#define ILI9341_3GAMMA_EN      0xf2   /* 3 Gamma enable register */
#define ILI9341_INTERFACE      0xf6   /* Interface control register */
#define ILI9341_PRC            0xf7   /* Pump ratio control register */
#define ILI9341_ETMOD          0xb7   /* Entry mode set */

#define ILI9341_MADCTL_BGR      BIT(3)
#define ILI9341_MADCTL_MV       BIT(5)
#define ILI9341_MADCTL_MX       BIT(6)
#define ILI9341_MADCTL_MY       BIT(7)

#define ILI9341_POWER_B_LEN     3
#define ILI9341_POWER_SEQ_LEN   4
#define ILI9341_DTCA_LEN        3
#define ILI9341_DTCB_LEN        2
#define ILI9341_POWER_A_LEN     5
#define ILI9341_DFC_1_LEN       2
#define ILI9341_FRC_LEN         2
#define ILI9341_VCOM_1_LEN      2
#define ILI9341_DFC_2_LEN       4
#define ILI9341_COLUMN_ADDR_LEN 4
#define ILI9341_PAGE_ADDR_LEN   4
#define ILI9341_INTERFACE_LEN   3
#define ILI9341_PGAMMA_LEN      15
#define ILI9341_NGAMMA_LEN      15
#define ILI9341_CA_LEN          3

#define ILI9341_PIXEL_DPI_16_BITS       (BIT(6) | BIT(4))
#define ILI9341_PIXEL_DPI_18_BITS       (BIT(6) | BIT(5))
#define ILI9341_GAMMA_CURVE_1           BIT(0)
#define ILI9341_IF_WE_MODE              BIT(0)
#define ILI9341_IF_BIG_ENDIAN           0x00
#define ILI9341_IF_DM_RGB               BIT(2)
#define ILI9341_IF_DM_INTERNAL          0x00
#define ILI9341_IF_DM_VSYNC             BIT(3)
#define ILI9341_IF_RM_RGB               BIT(1)
#define ILI9341_IF_RIM_RGB              0x00

#define ILI9341_COLUMN_ADDR             0x00ef
#define ILI9341_PAGE_ADDR               0x013f

#define ILI9341_RGB_EPL                 BIT(0)
#define ILI9341_RGB_DPL                 BIT(1)
#define ILI9341_RGB_HSPL                BIT(2)
#define ILI9341_RGB_VSPL                BIT(3)
#define ILI9341_RGB_DE_MODE             BIT(6)
#define ILI9341_RGB_DISP_PATH_MEM       BIT(7)

#define ILI9341_DBI_VCOMH_4P6V          0x23
#define ILI9341_DBI_PWR_2_DEFAULT       0x10
#define ILI9341_DBI_PRC_NORMAL          0x20
#define ILI9341_DBI_VCOM_1_VMH_4P25V    0x3e
#define ILI9341_DBI_VCOM_1_VML_1P5V     0x28
#define ILI9341_DBI_VCOM_2_DEC_58       0x86
#define ILI9341_DBI_FRC_DIVA            0x00
#define ILI9341_DBI_FRC_RTNA            0x1b
#define ILI9341_DBI_EMS_GAS             BIT(0)
#define ILI9341_DBI_EMS_DTS             BIT(1)
#define ILI9341_DBI_EMS_GON             BIT(2)

/* struct ili9341_config - the system specific ILI9341 configuration */
struct ili9341_config {
        u32 max_spi_speed;
        /* mode: the drm display mode */
        const struct drm_display_mode mode;
        /* ca: TODO: need comments for this register */
        u8 ca[ILI9341_CA_LEN];
        /* power_b: Power control B (CFh) */
        u8 power_b[ILI9341_POWER_B_LEN];
        /* power_seq: Power on sequence control (EDh) */
        u8 power_seq[ILI9341_POWER_SEQ_LEN];
        /* dtca: Driver timing control A (E8h) */
        u8 dtca[ILI9341_DTCA_LEN];
        /* dtcb: Driver timing control B (EAh) */
        u8 dtcb[ILI9341_DTCB_LEN];
        /* power_a: Power control A (CBh) */
        u8 power_a[ILI9341_POWER_A_LEN];
        /* frc: Frame Rate Control (In Normal Mode/Full Colors) (B1h) */
        u8 frc[ILI9341_FRC_LEN];
        /* prc: Pump ratio control (F7h) */
        u8 prc;
        /* dfc_1: B6h DISCTRL (Display Function Control) */
        u8 dfc_1[ILI9341_DFC_1_LEN];
        /* power_1: Power Control 1 (C0h) */
        u8 power_1;
        /* power_2: Power Control 2 (C1h) */
        u8 power_2;
        /* vcom_1: VCOM Control 1(C5h) */
        u8 vcom_1[ILI9341_VCOM_1_LEN];
        /* vcom_2: VCOM Control 2(C7h) */
        u8 vcom_2;
        /* address_mode: Memory Access Control (36h) */
        u8 address_mode;
        /* g3amma_en: Enable 3G (F2h) */
        u8 g3amma_en;
        /* rgb_interface: RGB Interface Signal Control (B0h) */
        u8 rgb_interface;
        /* dfc_2: refer to dfc_1 */
        u8 dfc_2[ILI9341_DFC_2_LEN];
        /* column_addr: Column Address Set (2Ah) */
        u8 column_addr[ILI9341_COLUMN_ADDR_LEN];
        /* page_addr: Page Address Set (2Bh) */
        u8 page_addr[ILI9341_PAGE_ADDR_LEN];
        /* interface: Interface Control (F6h) */
        u8 interface[ILI9341_INTERFACE_LEN];
        /*
         * pixel_format: This command sets the pixel format for the RGB
         * image data used by
         */
        u8 pixel_format;
        /*
         * gamma_curve: This command is used to select the desired Gamma
         * curve for the
         */
        u8 gamma_curve;
        /* pgamma: Positive Gamma Correction (E0h) */
        u8 pgamma[ILI9341_PGAMMA_LEN];
        /* ngamma: Negative Gamma Correction (E1h) */
        u8 ngamma[ILI9341_NGAMMA_LEN];
};

struct ili9341 {
        const struct ili9341_config *conf;
        struct drm_panel panel;
        struct gpio_desc *reset_gpio;
        struct gpio_desc *dc_gpio;
        struct mipi_dbi *dbi;
        u32 max_spi_speed;
        struct regulator_bulk_data supplies[3];
};

/*
 * The Stm32f429-disco board has a panel ili9341 connected to ltdc controller
 */
static const struct ili9341_config ili9341_stm32f429_disco_data = {
        .max_spi_speed = 10000000,
        .mode = {
                .clock = 6100,
                .hdisplay = 240,
                .hsync_start = 240 + 10,/* hfp 10 */
                .hsync_end = 240 + 10 + 10,/* hsync 10 */
                .htotal = 240 + 10 + 10 + 20,/* hbp 20 */
                .vdisplay = 320,
                .vsync_start = 320 + 4,/* vfp 4 */
                .vsync_end = 320 + 4 + 2,/* vsync 2 */
                .vtotal = 320 + 4 + 2 + 2,/* vbp 2 */
                .flags = 0,
                .width_mm = 65,
                .height_mm = 50,
                .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
        },
        .ca = {0xc3, 0x08, 0x50},
        .power_b = {0x00, 0xc1, 0x30},
        .power_seq = {0x64, 0x03, 0x12, 0x81},
        .dtca = {0x85, 0x00, 0x78},
        .power_a = {0x39, 0x2c, 0x00, 0x34, 0x02},
        .prc = 0x20,
        .dtcb = {0x00, 0x00},
        /* 0x00 fosc, 0x1b 70hz */
        .frc = {0x00, 0x1b},
        /*
         * 0x0a Interval scan, AGND AGND AGND AGND
         * 0xa2 Normally white, G1 -> G320, S720 -> S1,
         *      Scan Cycle 5 frames,85ms
         */
        .dfc_1 = {0x0a, 0xa2},
        /* 0x10 3.65v */
        .power_1 = 0x10,
        /* 0x10 AVDD=vci*2, VGH=vci*7, VGL=-vci*4 */
        .power_2 = 0x10,
        /* 0x45 VCOMH 4.425v, 0x15 VCOML -1.975*/
        .vcom_1 = {0x45, 0x15},
        /* 0x90 offset voltage, VMH-48, VML-48 */
        .vcom_2 = 0x90,
        /*
         * 0xc8 Row Address Order, Column Address Order
         * BGR 1
         */
        .address_mode = 0xc8,
        .g3amma_en = 0x00,
        /*
         * 0xc2
         * Display Data Path: Memory
         * RGB: DE mode
         * DOTCLK polarity set (data fetched at the falling time)
         */
        .rgb_interface = ILI9341_RGB_DISP_PATH_MEM |
                        ILI9341_RGB_DE_MODE |
                        ILI9341_RGB_DPL,
        /*
         * 0x0a
         * Gate outputs in non-display area: Interval scan
         * Determine source/VCOM output in a non-display area in the partial
         * display mode: AGND AGND AGND AGND
         *
         * 0xa7
         * Scan Cycle: 15 frames
         * fFLM = 60Hz: 255ms
         * Liquid crystal type: Normally white
         * Gate Output Scan Direction: G1 -> G320
         * Source Output Scan Direction: S720 -> S1
         *
         * 0x27
         * LCD Driver Line: 320 lines
         *
         * 0x04
         * PCDIV: 4
         */
        .dfc_2 = {0x0a, 0xa7, 0x27, 0x04},
        /* column address: 240 */
        .column_addr = {0x00, 0x00, (ILI9341_COLUMN_ADDR >> 4) & 0xff,
                                ILI9341_COLUMN_ADDR & 0xff},
        /* page address: 320 */
        .page_addr = {0x00, 0x00, (ILI9341_PAGE_ADDR >> 4) & 0xff,
                                ILI9341_PAGE_ADDR & 0xff},
        /*
         * Memory write control: When the transfer number of data exceeds
         * (EC-SC+1)*(EP-SP+1), the column and page number will be
         * reset, and the exceeding data will be written into the following
         * column and page.
         * Display Operation Mode: RGB Interface Mode
         * Interface for RAM Access: RGB interface
         * 16- bit RGB interface (1 transfer/pixel)
         */
        .interface = {ILI9341_IF_WE_MODE, 0x00,
                        ILI9341_IF_DM_RGB | ILI9341_IF_RM_RGB},
        /* DPI: 16 bits / pixel */
        .pixel_format = ILI9341_PIXEL_DPI_16_BITS,
        /* Curve Selected: Gamma curve 1 (G2.2) */
        .gamma_curve = ILI9341_GAMMA_CURVE_1,
        .pgamma = {0x0f, 0x29, 0x24, 0x0c, 0x0e,
                        0x09, 0x4e, 0x78, 0x3c, 0x09,
                        0x13, 0x05, 0x17, 0x11, 0x00},
        .ngamma = {0x00, 0x16, 0x1b, 0x04, 0x11,
                        0x07, 0x31, 0x33, 0x42, 0x05,
                        0x0c, 0x0a, 0x28, 0x2f, 0x0f},
};

static inline struct ili9341 *panel_to_ili9341(struct drm_panel *panel)
{
        return container_of(panel, struct ili9341, panel);
}

static void ili9341_dpi_init(struct ili9341 *ili)
{
        struct device *dev = (&ili->panel)->dev;
        struct mipi_dbi *dbi = ili->dbi;
        struct ili9341_config *cfg = (struct ili9341_config *)ili->conf;

        /* Power Control */
        mipi_dbi_command_stackbuf(dbi, 0xca, cfg->ca, ILI9341_CA_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_POWERB, cfg->power_b,
                                  ILI9341_POWER_B_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_POWER_SEQ, cfg->power_seq,
                                  ILI9341_POWER_SEQ_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_DTCA, cfg->dtca,
                                  ILI9341_DTCA_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_POWERA, cfg->power_a,
                                  ILI9341_POWER_A_LEN);
        mipi_dbi_command(ili->dbi, ILI9341_PRC, cfg->prc);
        mipi_dbi_command_stackbuf(dbi, ILI9341_DTCB, cfg->dtcb,
                                  ILI9341_DTCB_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_FRC, cfg->frc, ILI9341_FRC_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_DFC, cfg->dfc_1,
                                  ILI9341_DFC_1_LEN);
        mipi_dbi_command(dbi, ILI9341_POWER1, cfg->power_1);
        mipi_dbi_command(dbi, ILI9341_POWER2, cfg->power_2);

        /* VCOM */
        mipi_dbi_command_stackbuf(dbi, ILI9341_VCOM1, cfg->vcom_1,
                                  ILI9341_VCOM_1_LEN);
        mipi_dbi_command(dbi, ILI9341_VCOM2, cfg->vcom_2);
        mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, cfg->address_mode);

        /* Gamma */
        mipi_dbi_command(dbi, ILI9341_3GAMMA_EN, cfg->g3amma_en);
        mipi_dbi_command(dbi, ILI9341_RGB_INTERFACE, cfg->rgb_interface);
        mipi_dbi_command_stackbuf(dbi, ILI9341_DFC, cfg->dfc_2,
                                  ILI9341_DFC_2_LEN);

        /* Colomn address set */
        mipi_dbi_command_stackbuf(dbi, MIPI_DCS_SET_COLUMN_ADDRESS,
                                  cfg->column_addr, ILI9341_COLUMN_ADDR_LEN);

        /* Page address set */
        mipi_dbi_command_stackbuf(dbi, MIPI_DCS_SET_PAGE_ADDRESS,
                                  cfg->page_addr, ILI9341_PAGE_ADDR_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_INTERFACE, cfg->interface,
                                  ILI9341_INTERFACE_LEN);

        /* Format */
        mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, cfg->pixel_format);
        mipi_dbi_command(dbi, MIPI_DCS_WRITE_MEMORY_START);
        msleep(200);
        mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, cfg->gamma_curve);
        mipi_dbi_command_stackbuf(dbi, ILI9341_PGAMMA, cfg->pgamma,
                                  ILI9341_PGAMMA_LEN);
        mipi_dbi_command_stackbuf(dbi, ILI9341_NGAMMA, cfg->ngamma,
                                  ILI9341_NGAMMA_LEN);
        mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
        msleep(200);
        mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
        mipi_dbi_command(dbi, MIPI_DCS_WRITE_MEMORY_START);

        dev_info(dev, "Initialized display rgb interface\n");
}

static int ili9341_dpi_power_on(struct ili9341 *ili)
{
        struct device *dev = (&ili->panel)->dev;
        int ret = 0;

        /* Assert RESET */
        gpiod_set_value(ili->reset_gpio, 1);

        /* Enable power */
        ret = regulator_bulk_enable(ARRAY_SIZE(ili->supplies),
                                    ili->supplies);
        if (ret < 0) {
                dev_err(dev, "unable to enable vcc\n");
                return ret;
        }
        msleep(20);

        /* De-assert RESET */
        gpiod_set_value(ili->reset_gpio, 0);
        msleep(20);

        return 0;
}

static int ili9341_dpi_power_off(struct ili9341 *ili)
{
        /* Assert RESET */
        gpiod_set_value(ili->reset_gpio, 1);

        /* Disable power */
        return regulator_bulk_disable(ARRAY_SIZE(ili->supplies),
                                      ili->supplies);
}

static int ili9341_dpi_disable(struct drm_panel *panel)
{
        struct ili9341 *ili = panel_to_ili9341(panel);

        mipi_dbi_command(ili->dbi, MIPI_DCS_SET_DISPLAY_OFF);
        return 0;
}

static int ili9341_dpi_unprepare(struct drm_panel *panel)
{
        struct ili9341 *ili = panel_to_ili9341(panel);

        return ili9341_dpi_power_off(ili);
}

static int ili9341_dpi_prepare(struct drm_panel *panel)
{
        struct ili9341 *ili = panel_to_ili9341(panel);
        int ret;

        ret = ili9341_dpi_power_on(ili);
        if (ret < 0)
                return ret;

        ili9341_dpi_init(ili);

        return 0;
}

static int ili9341_dpi_enable(struct drm_panel *panel)
{
        struct ili9341 *ili = panel_to_ili9341(panel);

        mipi_dbi_command(ili->dbi, MIPI_DCS_SET_DISPLAY_ON);
        return 0;
}

static int ili9341_dpi_get_modes(struct drm_panel *panel,
                                 struct drm_connector *connector)
{
        struct ili9341 *ili = panel_to_ili9341(panel);
        struct drm_device *drm = connector->dev;
        struct drm_display_mode *mode;
        struct drm_display_info *info;

        info = &connector->display_info;
        info->width_mm = ili->conf->mode.width_mm;
        info->height_mm = ili->conf->mode.height_mm;

        if (ili->conf->rgb_interface & ILI9341_RGB_DPL)
                info->bus_flags |= DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE;
        else
                info->bus_flags |= DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE;

        if (ili->conf->rgb_interface & ILI9341_RGB_EPL)
                info->bus_flags |= DRM_BUS_FLAG_DE_LOW;
        else
                info->bus_flags |= DRM_BUS_FLAG_DE_HIGH;

        mode = drm_mode_duplicate(drm, &ili->conf->mode);
        if (!mode) {
                drm_err(drm, "bad mode or failed to add mode\n");
                return -EINVAL;
        }
        drm_mode_set_name(mode);

        /* Set up the polarity */
        if (ili->conf->rgb_interface & ILI9341_RGB_HSPL)
                mode->flags |= DRM_MODE_FLAG_PHSYNC;
        else
                mode->flags |= DRM_MODE_FLAG_NHSYNC;

        if (ili->conf->rgb_interface & ILI9341_RGB_VSPL)
                mode->flags |= DRM_MODE_FLAG_PVSYNC;
        else
                mode->flags |= DRM_MODE_FLAG_NVSYNC;

        drm_mode_probed_add(connector, mode);

        return 1; /* Number of modes */
}

static const struct drm_panel_funcs ili9341_dpi_funcs = {
        .disable = ili9341_dpi_disable,
        .unprepare = ili9341_dpi_unprepare,
        .prepare = ili9341_dpi_prepare,
        .enable = ili9341_dpi_enable,
        .get_modes = ili9341_dpi_get_modes,
};

static int ili9341_dpi_probe(struct spi_device *spi, struct gpio_desc *dc,
                             struct gpio_desc *reset)
{
        struct device *dev = &spi->dev;
        struct ili9341 *ili;
        int ret;

        ili = devm_drm_panel_alloc(dev, struct ili9341, panel,
                                   &ili9341_dpi_funcs,
                                   DRM_MODE_CONNECTOR_DPI);
        if (IS_ERR(ili))
                return PTR_ERR(ili);

        ili->dbi = devm_kzalloc(dev, sizeof(struct mipi_dbi),
                                GFP_KERNEL);
        if (!ili->dbi)
                return -ENOMEM;

        ili->supplies[0].supply = "vci";
        ili->supplies[1].supply = "vddi";
        ili->supplies[2].supply = "vddi-led";
        ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ili->supplies),
                                      ili->supplies);
        if (ret < 0) {
                dev_err(dev, "failed to get regulators: %d\n", ret);
                return ret;
        }

        ret = mipi_dbi_spi_init(spi, ili->dbi, dc);
        if (ret)
                return ret;

        spi_set_drvdata(spi, ili);
        ili->reset_gpio = reset;
        /*
         * Every new incarnation of this display must have a unique
         * data entry for the system in this driver.
         */
        ili->conf = device_get_match_data(dev);
        if (!ili->conf) {
                dev_err(dev, "missing device configuration\n");
                return -ENODEV;
        }

        ili->max_spi_speed = ili->conf->max_spi_speed;
        drm_panel_add(&ili->panel);

        return 0;
}

static int ili9341_probe(struct spi_device *spi)
{
        struct device *dev = &spi->dev;
        struct gpio_desc *dc;
        struct gpio_desc *reset;

        reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
        if (IS_ERR(reset))
                return dev_err_probe(dev, PTR_ERR(reset), "Failed to get gpio 'reset'\n");

        dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
        if (IS_ERR(dc))
                return dev_err_probe(dev, PTR_ERR(dc), "Failed to get gpio 'dc'\n");

        return ili9341_dpi_probe(spi, dc, reset);
}

static void ili9341_remove(struct spi_device *spi)
{
        struct ili9341 *ili = spi_get_drvdata(spi);

        ili9341_dpi_power_off(ili);
        drm_panel_remove(&ili->panel);
}

static const struct of_device_id ili9341_of_match[] = {
        {
                .compatible = "st,sf-tc240t-9370-t",
                .data = &ili9341_stm32f429_disco_data,
        },
        { }
};
MODULE_DEVICE_TABLE(of, ili9341_of_match);

static const struct spi_device_id ili9341_id[] = {
        { "sf-tc240t-9370-t", 0 },
        { }
};
MODULE_DEVICE_TABLE(spi, ili9341_id);

static struct spi_driver ili9341_driver = {
        .probe = ili9341_probe,
        .remove = ili9341_remove,
        .id_table = ili9341_id,
        .driver = {
                .name = "panel-ilitek-ili9341",
                .of_match_table = ili9341_of_match,
        },
};
module_spi_driver(ili9341_driver);

MODULE_AUTHOR("Dillon Min <dillon.minfei@gmail.com>");
MODULE_DESCRIPTION("ILI9341 LCD panel driver");
MODULE_LICENSE("GPL v2");