arch/arm/mach-s5pv210/setup-fb-24bpp.c

   1 /* linux/arch/arm/plat-s5pv210/setup-fb-24bpp.c
   2  *
   3  * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com/
   5  *
   6  * Base s5pv210 setup information for 24bpp LCD framebuffer
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/fb.h>
  16 #include <linux/gpio.h>
  17
  18 #include <mach/map.h>
  19 #include <plat/fb.h>
  20 #include <mach/regs-clock.h>
  21 #include <plat/gpio-cfg.h>
  22
  23 static void s5pv210_fb_cfg_gpios(unsigned int base, unsigned int nr)
  24 {
  25         s3c_gpio_cfgrange_nopull(base, nr, S3C_GPIO_SFN(2));
  26
  27         for (; nr > 0; nr--, base++)
  28                 s5p_gpio_set_drvstr(base, S5P_GPIO_DRVSTR_LV4);
  29 }
  30
  31
  32 void s5pv210_fb_gpio_setup_24bpp(void)
  33 {
  34         s5pv210_fb_cfg_gpios(S5PV210_GPF0(0), 8);
  35         s5pv210_fb_cfg_gpios(S5PV210_GPF1(0), 8);
  36         s5pv210_fb_cfg_gpios(S5PV210_GPF2(0), 8);
  37         s5pv210_fb_cfg_gpios(S5PV210_GPF3(0), 4);
  38
  39         /* Set DISPLAY_CONTROL register for Display path selection.
  40          *
  41          * ouput   |   RGB   |   I80   |   ITU
  42          * -----------------------------------
  43          *  00     |   MIE   |  FIMD   |  FIMD
  44          *  01     | MDNIE   | MDNIE   |  FIMD
  45          *  10     |  FIMD   |  FIMD   |  FIMD
  46          *  11     |  FIMD   |  FIMD   |  FIMD
  47          */
  48         writel(0x2, S5P_MDNIE_SEL);
  49 }