Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Thomas Petazzoni | 586 | 97.67% | 1 | 25.00% |
Priit Laes | 12 | 2.00% | 1 | 25.00% |
Greg Kroah-Hartman | 2 | 0.33% | 2 | 50.00% |
Total | 600 | 4 |
// SPDX-License-Identifier: GPL-2.0+ /* * FB driver for the ILI9340 LCD Controller * * Copyright (C) 2013 Noralf Tronnes */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> #include <video/mipi_display.h> #include "fbtft.h" #define DRVNAME "fb_ili9340" #define WIDTH 240 #define HEIGHT 320 /* Init sequence taken from: Arduino Library for the Adafruit 2.2" display */ static int init_display(struct fbtft_par *par) { par->fbtftops.reset(par); write_reg(par, 0xEF, 0x03, 0x80, 0x02); write_reg(par, 0xCF, 0x00, 0XC1, 0X30); write_reg(par, 0xED, 0x64, 0x03, 0X12, 0X81); write_reg(par, 0xE8, 0x85, 0x00, 0x78); write_reg(par, 0xCB, 0x39, 0x2C, 0x00, 0x34, 0x02); write_reg(par, 0xF7, 0x20); write_reg(par, 0xEA, 0x00, 0x00); /* Power Control 1 */ write_reg(par, 0xC0, 0x23); /* Power Control 2 */ write_reg(par, 0xC1, 0x10); /* VCOM Control 1 */ write_reg(par, 0xC5, 0x3e, 0x28); /* VCOM Control 2 */ write_reg(par, 0xC7, 0x86); /* COLMOD: Pixel Format Set */ /* 16 bits/pixel */ write_reg(par, MIPI_DCS_SET_PIXEL_FORMAT, 0x55); /* Frame Rate Control */ /* Division ratio = fosc, Frame Rate = 79Hz */ write_reg(par, 0xB1, 0x00, 0x18); /* Display Function Control */ write_reg(par, 0xB6, 0x08, 0x82, 0x27); /* Gamma Function Disable */ write_reg(par, 0xF2, 0x00); /* Gamma curve selection */ write_reg(par, MIPI_DCS_SET_GAMMA_CURVE, 0x01); /* Positive Gamma Correction */ write_reg(par, 0xE0, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00); /* Negative Gamma Correction */ write_reg(par, 0xE1, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F); write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE); mdelay(120); write_reg(par, MIPI_DCS_SET_DISPLAY_ON); return 0; } static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) { write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF); write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF); write_reg(par, MIPI_DCS_WRITE_MEMORY_START); } #define ILI9340_MADCTL_MV 0x20 #define ILI9340_MADCTL_MX 0x40 #define ILI9340_MADCTL_MY 0x80 static int set_var(struct fbtft_par *par) { u8 val; switch (par->info->var.rotate) { case 270: val = ILI9340_MADCTL_MV; break; case 180: val = ILI9340_MADCTL_MY; break; case 90: val = ILI9340_MADCTL_MV | ILI9340_MADCTL_MY | ILI9340_MADCTL_MX; break; default: val = ILI9340_MADCTL_MX; break; } /* Memory Access Control */ write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, val | (par->bgr << 3)); return 0; } static struct fbtft_display display = { .regwidth = 8, .width = WIDTH, .height = HEIGHT, .fbtftops = { .init_display = init_display, .set_addr_win = set_addr_win, .set_var = set_var, }, }; FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9340", &display); MODULE_ALIAS("spi:" DRVNAME); MODULE_ALIAS("platform:" DRVNAME); MODULE_ALIAS("spi:ili9340"); MODULE_ALIAS("platform:ili9340"); MODULE_DESCRIPTION("FB driver for the ILI9340 LCD Controller"); MODULE_AUTHOR("Noralf Tronnes"); MODULE_LICENSE("GPL");
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