#include "include.h"
#include "tft.h"

#define CommEnd()       tft_write_end()
#define WriteData(v)    tft_write_data(v)
#define WriteComm(v)    tft_write_cmd(v)

#define GUI_TFT_SCREEN_ID               0x30

#define GUI_SCREEN_OFS_X                0
#define GUI_SCREEN_OFS_Y                0

static void tft_gui_set_window(u16 x0, u16 y0, u16 x1, u16 y1)
{
    x0 += GUI_SCREEN_OFS_X;
    x1 += GUI_SCREEN_OFS_X;
    y0 += GUI_SCREEN_OFS_Y;
    y1 += GUI_SCREEN_OFS_Y;

    WriteComm(0x2A); // TFT_CASET
    WriteData(BYTE1(x0));
    WriteData(BYTE0(x0));
    WriteData(BYTE1(x1));
    WriteData(BYTE0(x1));

    WriteComm(0x2B); // TFT_PASET
    WriteData(BYTE1(y0));
    WriteData(BYTE0(y0));
    WriteData(BYTE1(y1));
    WriteData(BYTE0(y1));

    tft_write_end();
}

static void tft_read_id(uint8_t *buf)
{
    tft_read_id_cmd(0x04);

    /* dummy clock cycle */
    tft_dummy_clock();

    buf[0] = tft_spi_getbyte();
    buf[1] = tft_spi_getbyte();
    buf[2] = tft_spi_getbyte();
    tft_write_end();
}

static void tft_240_gcgd3030_init(void)
{
    printf("tft_gcgd3030_init\n");

    tft_hw_reset();

    WriteComm(0xFD);
    WriteData(0x06);
    WriteData(0x08);

    WriteComm(0x61);
    WriteData(0x07);
    WriteData(0x07);

    WriteComm(0x73);
    WriteData(0x70);
    WriteComm(0x73);
    WriteData(0x00);

    // bias
    WriteComm(0x62);
    WriteData(0x00); // 01
    WriteData(0x44); // 04 44
    WriteData(0x40); // 44 65 40
    WriteComm(0x63); // VGL
    WriteData(0x41);
    WriteData(0x07);
    WriteData(0x12);
    WriteData(0x12);

    // VSP
    WriteComm(0x65); // Pump1=4.7MHz //PUMP1 VSP
    WriteData(0x09); // D6-5:pump1_clk[1:0] clamp 28 2b
    WriteData(0x17); // 6.26
    WriteData(0x21);

    // VSN
    WriteComm(0x66); // pump=2 AVCL
    WriteData(0x09); // clamp 08 0b 09
    WriteData(0x17); // 10
    WriteData(0x21);

    // add source_neg_time
    WriteComm(0x67); // pump_sel
    WriteData(0x20); // 21 20
    WriteData(0x40);

    // gamma vap/van
    WriteComm(0x68); // gamma vap/van
    WriteData(0x5D);
    WriteData(0x4C);
    WriteData(0x1F); // VCOM
    WriteData(0x20);
    WriteComm(0xb1); // frame rate
    WriteData(0x3b); // 0x0f fr_h[5:0] 0F
    WriteData(0x2f); // 0x02 fr_v[4:0] 02
    WriteData(0x04); // 0x04 fr_div[2:0] 03
    WriteComm(0xB4);
    WriteData(0x01); // 00:column 01:dot

    ////porch
    WriteComm(0xB5);
    WriteData(0x02); // 0x02 vfp[6:0]
    WriteData(0x02); // 0x02 vbp[6:0]
    WriteData(0x0a); // 0x0A hfp[6:0]
    WriteData(0x14); // 0x14 hbp[6:0]
    WriteComm(0xB6);
    WriteData(0x44); // 04
    WriteData(0x01); // 01
    WriteData(0x9f); //
    WriteData(0x00); //
    WriteData(0x02); //

    ////gamme sel
    WriteComm(0xdf); //
    WriteData(0x11); // gofc_gamma_en_sel=1

    WriteComm(0xE2);
    WriteData(0x0d); // vrp0[5:0] V63
    WriteData(0x0F); // vrp1[5:0] V62
    WriteData(0x11); // vrp2[5:0] V61
    WriteData(0x33); // vrp3[5:0] V2
    WriteData(0x36); // vrp4[5:0] V1
    WriteData(0x3f); // vrp5[5:0] V0
    WriteComm(0xE5);
    WriteData(0x3f); // vrn0[5:0] V0
    WriteData(0x37); // vrn1[5:0] V1
    WriteData(0x33); // vrn2[5:0] V2
    WriteData(0x12); // vrn3[5:0] V61
    WriteData(0x10); // vrn4[5:0] V62
    WriteData(0x04); // vrn5[5:0] V63
    WriteComm(0xE1);
    WriteData(0x2C); // prp0[6:0] V51
    WriteData(0x74); // prp1[6:0] V15
    WriteComm(0xE4);
    WriteData(0x74); // prn0[6:0] V15
    WriteData(0x2B); // prn1[6:0] V51
    WriteComm(0xE0);
    WriteData(0x08); // pkp0[4:0] V60
    WriteData(0x07); // pkp1[4:0] V56
    WriteData(0x0D); // pkp2[4:0] V45
    WriteData(0x13); // pkp3[4:0] V37
    WriteData(0x11); // pkp4[4:0] V29 //
    WriteData(0x13); // pkp5[4:0] V21
    WriteData(0x0E); // pkp6[4:0] V7
    WriteData(0x14); // pkp7[4:0] V3
    WriteComm(0xE3);
    WriteData(0x17); // pkn0[4:0] V3
    WriteData(0x0F); // pkn1[4:0] V7
    WriteData(0x14); // pkn2[4:0] V21
    WriteData(0x11); // pkn3[4:0] V29 //
    WriteData(0x13); // pkn4[4:0] V37
    WriteData(0x0C); // pkn5[4:0] V45
    WriteData(0x06); // pkn6[4:0] V56
    WriteData(0x04); // pkn7[4:0] V60

    // GAMMA---------------------------------/////////////
    WriteComm(0xE6);
    WriteData(0x00);
    WriteData(0xff); // SC_EN_START[7:0] f0
    WriteComm(0xE7);
    WriteData(0x01); // CS_START[3:0] 01
    WriteData(0x04); // scdt_inv_sel cs_vp_en
    WriteData(0x03); // CS1_WIDTH[7:0] 12
    WriteData(0x03); // CS2_WIDTH[7:0] 12
    WriteData(0x00); // PREC_START[7:0] 06
    WriteData(0x12); // PREC_WIDTH[7:0] 12
    WriteComm(0xE8); // source
    WriteData(0x00); // VCMP_OUT_EN 81-vcmp/vref_output
    WriteData(0x50); // chopper_sel[6:4]
    WriteData(0x00); // gchopper_sel[6:4] 60

    ////gate
    WriteComm(0xEc);
    WriteData(0x52); // 50
    WriteComm(0xF1);
    WriteData(0x01); // TE
    WriteData(0x6A);
    WriteData(0x6B);
    WriteComm(0xF6);
    WriteData(0x01);
    WriteData(0x30); // epf[1:0]
    WriteData(0x00);
    WriteData(0x00); // SPI2L: 40
    WriteComm(0xfd);
    WriteData(0xfa);
    WriteData(0xfc);
    WriteComm(0x3a);
    WriteData(0x55); // 565
    WriteComm(0x35);
    WriteData(0x00);
    WriteComm(0x36); // bgr_[3]
    WriteData(0x00); // c0
    WriteComm(0x11); // exit sleep
    delay_ms(200);
    WriteComm(0x29); // display on
    delay_ms(50);
}

tft_driver_t tft_driver_240_gcgd3030 = {
    .id = GUI_TFT_SCREEN_ID,
    .init = tft_240_gcgd3030_init,
    .read_id = tft_read_id,
    .set_window = tft_gui_set_window,
};