| /* |
| * FB driver for the HX8353D LCD Controller |
| * |
| * Copyright (c) 2014 Petr Olivka |
| * Copyright (c) 2013 Noralf Tronnes |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #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_hx8353d" |
| #define DEFAULT_GAMMA "50 77 40 08 BF 00 03 0F 00 01 73 00 72 03 B0 0F 08 00 0F" |
| |
| static int init_display(struct fbtft_par *par) |
| { |
| par->fbtftops.reset(par); |
| mdelay(150); |
| |
| /* SETEXTC */ |
| write_reg(par, 0xB9, 0xFF, 0x83, 0x53); |
| |
| /* RADJ */ |
| write_reg(par, 0xB0, 0x3C, 0x01); |
| |
| /* VCOM */ |
| write_reg(par, 0xB6, 0x94, 0x6C, 0x50); |
| |
| /* PWR */ |
| write_reg(par, 0xB1, 0x00, 0x01, 0x1B, 0x03, 0x01, 0x08, 0x77, 0x89); |
| |
| /* COLMOD */ |
| write_reg(par, 0x3A, 0x05); |
| |
| /* MEM ACCESS */ |
| write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, 0xC0); |
| |
| /* SLPOUT - Sleep out & booster on */ |
| write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE); |
| mdelay(150); |
| |
| /* DISPON - Display On */ |
| write_reg(par, MIPI_DCS_SET_DISPLAY_ON); |
| |
| /* RGBSET */ |
| write_reg(par, MIPI_DCS_WRITE_LUT, |
| 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, |
| 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
| 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
| 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
| 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, |
| 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62); |
| |
| return 0; |
| }; |
| |
| static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) |
| { |
| /* column address */ |
| write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff); |
| |
| /* Row address */ |
| write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff); |
| |
| /* memory write */ |
| write_reg(par, 0x2c); |
| } |
| |
| #define my BIT(7) |
| #define mx BIT(6) |
| #define mv BIT(5) |
| static int set_var(struct fbtft_par *par) |
| { |
| /* |
| * madctl - memory data access control |
| * rgb/bgr: |
| * 1. mode selection pin srgb |
| * rgb h/w pin for color filter setting: 0=rgb, 1=bgr |
| * 2. madctl rgb bit |
| * rgb-bgr order color filter panel: 0=rgb, 1=bgr |
| */ |
| switch (par->info->var.rotate) { |
| case 0: |
| write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, |
| mx | my | (par->bgr << 3)); |
| break; |
| case 270: |
| write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, |
| my | mv | (par->bgr << 3)); |
| break; |
| case 180: |
| write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, |
| par->bgr << 3); |
| break; |
| case 90: |
| write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, |
| mx | mv | (par->bgr << 3)); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* gamma string format: */ |
| static int set_gamma(struct fbtft_par *par, unsigned long *curves) |
| { |
| write_reg(par, 0xE0, |
| curves[0], curves[1], curves[2], curves[3], |
| curves[4], curves[5], curves[6], curves[7], |
| curves[8], curves[9], curves[10], curves[11], |
| curves[12], curves[13], curves[14], curves[15], |
| curves[16], curves[17], curves[18]); |
| |
| return 0; |
| } |
| |
| static struct fbtft_display display = { |
| .regwidth = 8, |
| .width = 128, |
| .height = 160, |
| .gamma_num = 1, |
| .gamma_len = 19, |
| .gamma = DEFAULT_GAMMA, |
| .fbtftops = { |
| .init_display = init_display, |
| .set_addr_win = set_addr_win, |
| .set_var = set_var, |
| .set_gamma = set_gamma, |
| }, |
| }; |
| |
| FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8353d", &display); |
| |
| MODULE_ALIAS("spi:" DRVNAME); |
| MODULE_ALIAS("platform:" DRVNAME); |
| MODULE_ALIAS("spi:hx8353d"); |
| MODULE_ALIAS("platform:hx8353d"); |
| |
| MODULE_DESCRIPTION("FB driver for the HX8353D LCD Controller"); |
| MODULE_AUTHOR("Petr Olivka"); |
| MODULE_LICENSE("GPL"); |