staging: fbtft: add fb_ili9340 driver (8f7fdaaf) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/staging/fbtft/Kconfig

+6 −0

Original line number	Original line	Diff line number	Diff line
	@@ -49,3 +49,9 @@ config FB_TFT_ILI9325
	depends on FB_TFT		depends on FB_TFT
	help		help
	Generic Framebuffer support for ILI9325		Generic Framebuffer support for ILI9325

			config FB_TFT_ILI9340
			tristate "FB driver for the ILI9340 LCD Controller"
			depends on FB_TFT
			help
			Generic Framebuffer support for ILI9340

drivers/staging/fbtft/Makefile

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -10,3 +10,4 @@ obj-$(CONFIG_FB_TFT_HX8347D) += fb_hx8347d.o
	obj-$(CONFIG_FB_TFT_HX8353D) += fb_hx8353d.o		obj-$(CONFIG_FB_TFT_HX8353D) += fb_hx8353d.o
	obj-$(CONFIG_FB_TFT_ILI9320) += fb_ili9320.o		obj-$(CONFIG_FB_TFT_ILI9320) += fb_ili9320.o
	obj-$(CONFIG_FB_TFT_ILI9325) += fb_ili9325.o		obj-$(CONFIG_FB_TFT_ILI9325) += fb_ili9325.o
			obj-$(CONFIG_FB_TFT_ILI9340) += fb_ili9340.o

drivers/staging/fbtft/fb_ili9340.c

0 → 100644

+163 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* FB driver for the ILI9340 LCD Controller
			*
			* 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.
			*
			* You should have received a copy of the GNU General Public License
			* along with this program; if not, write to the Free Software
			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
			*/

			#include <linux/module.h>
			#include <linux/kernel.h>
			#include <linux/init.h>
			#include <linux/gpio.h>
			#include <linux/delay.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)
			{
			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);

			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, 0x3A, 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 selected */
			write_reg(par, 0x26, 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);

			/* Sleep OUT */
			write_reg(par, 0x11);

			mdelay(120);

			/* Display ON */
			write_reg(par, 0x29);

			return 0;
			}

			static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
			{
			fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
			"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);

			/* Column address */
			write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);

			/* Row adress */
			write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);

			/* Memory write */
			write_reg(par, 0x2C);
			}

			#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;

			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);

			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, 0x36, 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");