This commit adds the fb_ili9481 driver from the fbtft project at https://github.com/notro/fbtft. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx> --- drivers/staging/fbtft/Kconfig | 6 ++ drivers/staging/fbtft/Makefile | 1 + drivers/staging/fbtft/fb_ili9481.c | 117 +++++++++++++++++++++++++++++++++++++ 3 files changed, 124 insertions(+) create mode 100644 drivers/staging/fbtft/fb_ili9481.c diff --git a/drivers/staging/fbtft/Kconfig b/drivers/staging/fbtft/Kconfig index ee09e9d..86a1bee 100644 --- a/drivers/staging/fbtft/Kconfig +++ b/drivers/staging/fbtft/Kconfig @@ -61,3 +61,9 @@ config FB_TFT_ILI9341 depends on FB_TFT help Generic Framebuffer support for ILI9341 + +config FB_TFT_ILI9481 + tristate "FB driver for the ILI9481 LCD Controller" + depends on FB_TFT + help + Generic Framebuffer support for ILI9481 diff --git a/drivers/staging/fbtft/Makefile b/drivers/staging/fbtft/Makefile index a83a685..0740641 100644 --- a/drivers/staging/fbtft/Makefile +++ b/drivers/staging/fbtft/Makefile @@ -12,3 +12,4 @@ obj-$(CONFIG_FB_TFT_ILI9320) += fb_ili9320.o obj-$(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 diff --git a/drivers/staging/fbtft/fb_ili9481.c b/drivers/staging/fbtft/fb_ili9481.c new file mode 100644 index 0000000..725157a --- /dev/null +++ b/drivers/staging/fbtft/fb_ili9481.c @@ -0,0 +1,117 @@ +/* + * FB driver for the ILI9481 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. + * + * 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/delay.h> + +#include "fbtft.h" + +#define DRVNAME "fb_ili9481" +#define WIDTH 320 +#define HEIGHT 480 + +static int default_init_sequence[] = { + + /* SLP_OUT - Sleep out */ + -1, 0x11, + -2, 50, + /* Power setting */ + -1, 0xD0, 0x07, 0x42, 0x18, + /* VCOM */ + -1, 0xD1, 0x00, 0x07, 0x10, + /* Power setting for norm. mode */ + -1, 0xD2, 0x01, 0x02, + /* Panel driving setting */ + -1, 0xC0, 0x10, 0x3B, 0x00, 0x02, 0x11, + /* Frame rate & inv. */ + -1, 0xC5, 0x03, + /* Pixel format */ + -1, 0x3A, 0x55, + /* Gamma */ + -1, 0xC8, 0x00, 0x32, 0x36, 0x45, 0x06, 0x16, + 0x37, 0x75, 0x77, 0x54, 0x0C, 0x00, + /* DISP_ON */ + -1, 0x29, + -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); +} + +#define HFLIP 0x01 +#define VFLIP 0x02 +#define ROWxCOL 0x20 +static int set_var(struct fbtft_par *par) +{ + fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); + + switch (par->info->var.rotate) { + case 270: + write_reg(par, 0x36, ROWxCOL | HFLIP | VFLIP | (par->bgr << 3)); + break; + case 180: + write_reg(par, 0x36, VFLIP | (par->bgr << 3)); + break; + case 90: + write_reg(par, 0x36, ROWxCOL | (par->bgr << 3)); + break; + default: + write_reg(par, 0x36, HFLIP | (par->bgr << 3)); + 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,ili9481", &display); + +MODULE_ALIAS("spi:" DRVNAME); +MODULE_ALIAS("platform:" DRVNAME); +MODULE_ALIAS("spi:ili9481"); +MODULE_ALIAS("platform:ili9481"); + +MODULE_DESCRIPTION("FB driver for the ILI9481 LCD Controller"); +MODULE_AUTHOR("Petr Olivka"); +MODULE_LICENSE("GPL"); -- 2.1.0 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
