From 8d64b032aa71963da8e69ab2780947207c36a799 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 31 Dec 2014 10:11:20 +0100 Subject: [PATCH] staging: fbtft: add fb_ili9486 driver This commit adds the fb_ili9486 driver from the fbtft project at https://github.com/notro/fbtft. Signed-off-by: Thomas Petazzoni Signed-off-by: Noralf Tronnes Signed-off-by: Greg Kroah-Hartman --- drivers/staging/fbtft/Kconfig | 6 ++ drivers/staging/fbtft/Makefile | 1 + drivers/staging/fbtft/fb_ili9486.c | 121 +++++++++++++++++++++++++++++ 3 files changed, 128 insertions(+) create mode 100644 drivers/staging/fbtft/fb_ili9486.c diff --git a/drivers/staging/fbtft/Kconfig b/drivers/staging/fbtft/Kconfig index 86a1beeb0abd..ca7353771163 100644 --- a/drivers/staging/fbtft/Kconfig +++ b/drivers/staging/fbtft/Kconfig @@ -67,3 +67,9 @@ config FB_TFT_ILI9481 depends on FB_TFT help Generic Framebuffer support for ILI9481 + +config FB_TFT_ILI9486 + tristate "FB driver for the ILI9486 LCD Controller" + depends on FB_TFT + help + Generic Framebuffer support for ILI9486 diff --git a/drivers/staging/fbtft/Makefile b/drivers/staging/fbtft/Makefile index 0740641eaf33..8e633cf11269 100644 --- a/drivers/staging/fbtft/Makefile +++ b/drivers/staging/fbtft/Makefile @@ -13,3 +13,4 @@ obj-$(CONFIG_FB_TFT_ILI9325) += fb_ili9325.o obj-$(CONFIG_FB_TFT_ILI9340) += fb_ili9340.o obj-$(CONFIG_FB_TFT_ILI9341) += fb_ili9341.o obj-$(CONFIG_FB_TFT_ILI9481) += fb_ili9481.o +obj-$(CONFIG_FB_TFT_ILI9486) += fb_ili9486.o diff --git a/drivers/staging/fbtft/fb_ili9486.c b/drivers/staging/fbtft/fb_ili9486.c new file mode 100644 index 000000000000..95b89999d32a --- /dev/null +++ b/drivers/staging/fbtft/fb_ili9486.c @@ -0,0 +1,121 @@ +/* + * FB driver for the ILI9486 LCD Controller + * + * Copyright (C) 2014 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 +#include +#include + +#include "fbtft.h" + +#define DRVNAME "fb_ili9486" +#define WIDTH 320 +#define HEIGHT 480 + + +/* this init sequence matches PiScreen */ +static int default_init_sequence[] = { + /* Interface Mode Control */ + -1, 0xb0, 0x0, + /* Sleep OUT */ + -1, 0x11, + -2, 250, + /* Interface Pixel Format */ + -1, 0x3A, 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, + /* Sleep OUT */ + -1, 0x11, + /* Display ON */ + -1, 0x29, + /* end marker */ + -3 +}; + +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); +} + +static int set_var(struct fbtft_par *par) +{ + fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); + + switch (par->info->var.rotate) { + case 0: + write_reg(par, 0x36, 0x80 | (par->bgr << 3)); + break; + case 90: + write_reg(par, 0x36, 0x20 | (par->bgr << 3)); + break; + case 180: + write_reg(par, 0x36, 0x40 | (par->bgr << 3)); + break; + case 270: + write_reg(par, 0x36, 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"); -- 2.20.1