swh:1:snp:c3bf2749e3476071fa748f67b0ffa2fdc5fe49d9
Tip revision: 9ff01193a20d391e8dbce4403dd5ef87c7eaaca6 authored by Linus Torvalds on 18 November 2018, 21:33:44 UTC
Linux 4.20-rc3
Linux 4.20-rc3
Tip revision: 9ff0119
fb_ili9486.c
// SPDX-License-Identifier: GPL-2.0+
/*
* FB driver for the ILI9486 LCD Controller
*
* Copyright (C) 2014 Noralf Tronnes
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <video/mipi_display.h>
#include "fbtft.h"
#define DRVNAME "fb_ili9486"
#define WIDTH 320
#define HEIGHT 480
/* this init sequence matches PiScreen */
static const s16 default_init_sequence[] = {
/* Interface Mode Control */
-1, 0xb0, 0x0,
-1, MIPI_DCS_EXIT_SLEEP_MODE,
-2, 250,
/* Interface Pixel Format */
-1, MIPI_DCS_SET_PIXEL_FORMAT, 0x55,
/* Power Control 3 */
-1, 0xC2, 0x44,
/* VCOM Control 1 */
-1, 0xC5, 0x00, 0x00, 0x00, 0x00,
/* PGAMCTRL(Positive Gamma Control) */
-1, 0xE0, 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00,
/* NGAMCTRL(Negative Gamma Control) */
-1, 0xE1, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
/* Digital Gamma Control 1 */
-1, 0xE2, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
-1, MIPI_DCS_EXIT_SLEEP_MODE,
-1, MIPI_DCS_SET_DISPLAY_ON,
/* end marker */
-3
};
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);
}
static int set_var(struct fbtft_par *par)
{
switch (par->info->var.rotate) {
case 0:
write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
0x80 | (par->bgr << 3));
break;
case 90:
write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
0x20 | (par->bgr << 3));
break;
case 180:
write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
0x40 | (par->bgr << 3));
break;
case 270:
write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
0xE0 | (par->bgr << 3));
break;
default:
break;
}
return 0;
}
static struct fbtft_display display = {
.regwidth = 8,
.width = WIDTH,
.height = HEIGHT,
.init_sequence = default_init_sequence,
.fbtftops = {
.set_addr_win = set_addr_win,
.set_var = set_var,
},
};
FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9486", &display);
MODULE_ALIAS("spi:" DRVNAME);
MODULE_ALIAS("platform:" DRVNAME);
MODULE_ALIAS("spi:ili9486");
MODULE_ALIAS("platform:ili9486");
MODULE_DESCRIPTION("FB driver for the ILI9486 LCD Controller");
MODULE_AUTHOR("Noralf Tronnes");
MODULE_LICENSE("GPL");