49475ed0cb
This patch makes use of the standard MIPI Display Command Set to remove some of the magic constants found in source code. Signed-off-by: Priit Laes <plaes@plaes.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/*
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* FB driver for the ILI9486 LCD Controller
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*
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* Copyright (C) 2014 Noralf Tronnes
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <video/mipi_display.h>
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#include "fbtft.h"
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#define DRVNAME "fb_ili9486"
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#define WIDTH 320
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#define HEIGHT 480
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/* this init sequence matches PiScreen */
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static int default_init_sequence[] = {
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/* Interface Mode Control */
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-1, 0xb0, 0x0,
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-1, MIPI_DCS_EXIT_SLEEP_MODE,
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-2, 250,
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/* Interface Pixel Format */
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-1, MIPI_DCS_SET_PIXEL_FORMAT, 0x55,
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/* Power Control 3 */
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-1, 0xC2, 0x44,
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/* VCOM Control 1 */
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-1, 0xC5, 0x00, 0x00, 0x00, 0x00,
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/* PGAMCTRL(Positive Gamma Control) */
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-1, 0xE0, 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
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0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00,
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/* NGAMCTRL(Negative Gamma Control) */
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-1, 0xE1, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
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0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
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/* Digital Gamma Control 1 */
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-1, 0xE2, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
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0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
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-1, MIPI_DCS_EXIT_SLEEP_MODE,
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-1, MIPI_DCS_SET_DISPLAY_ON,
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/* end marker */
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-3
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};
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static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
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{
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write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
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xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
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write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS,
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ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
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write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
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}
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static int set_var(struct fbtft_par *par)
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{
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switch (par->info->var.rotate) {
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case 0:
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write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
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0x80 | (par->bgr << 3));
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break;
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case 90:
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write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
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0x20 | (par->bgr << 3));
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break;
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case 180:
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write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
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0x40 | (par->bgr << 3));
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break;
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case 270:
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write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
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0xE0 | (par->bgr << 3));
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break;
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default:
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break;
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}
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return 0;
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}
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static struct fbtft_display display = {
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.regwidth = 8,
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.width = WIDTH,
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.height = HEIGHT,
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.init_sequence = default_init_sequence,
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.fbtftops = {
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.set_addr_win = set_addr_win,
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.set_var = set_var,
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},
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};
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FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9486", &display);
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MODULE_ALIAS("spi:" DRVNAME);
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MODULE_ALIAS("platform:" DRVNAME);
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MODULE_ALIAS("spi:ili9486");
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MODULE_ALIAS("platform:ili9486");
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MODULE_DESCRIPTION("FB driver for the ILI9486 LCD Controller");
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MODULE_AUTHOR("Noralf Tronnes");
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MODULE_LICENSE("GPL");
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