LXR uboot/arch/arm/cpu/armv7/exynos/system.c

   1/*
   2 * Copyright (C) 2012 Samsung Electronics
   3 * Donghwa Lee <dh09.lee@samsung.com>
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24#include <common.h>
  25#include <asm/io.h>
  26#include <asm/arch/system.h>
  27
  28static void exynos5_set_usbhost_mode(unsigned int mode)
  29{
  30        struct exynos5_sysreg *sysreg =
  31                (struct exynos5_sysreg *)samsung_get_base_sysreg();
  32
  33        /* Setting USB20PHY_CONFIG register to USB 2.0 HOST link */
  34        if (mode == USB20_PHY_CFG_HOST_LINK_EN) {
  35                setbits_le32(&sysreg->usb20phy_cfg,
  36                                USB20_PHY_CFG_HOST_LINK_EN);
  37        } else {
  38                clrbits_le32(&sysreg->usb20phy_cfg,
  39                                USB20_PHY_CFG_HOST_LINK_EN);
  40        }
  41}
  42
  43void set_usbhost_mode(unsigned int mode)
  44{
  45        if (cpu_is_exynos5())
  46                exynos5_set_usbhost_mode(mode);
  47}
  48
  49static void exynos4_set_system_display(void)
  50{
  51        struct exynos4_sysreg *sysreg =
  52            (struct exynos4_sysreg *)samsung_get_base_sysreg();
  53        unsigned int cfg = 0;
  54
  55        /*
  56         * system register path set
  57         * 0: MIE/MDNIE
  58         * 1: FIMD Bypass
  59         */
  60        cfg = readl(&sysreg->display_ctrl);
  61        cfg |= (1 << 1);
  62        writel(cfg, &sysreg->display_ctrl);
  63}
  64
  65static void exynos5_set_system_display(void)
  66{
  67        struct exynos5_sysreg *sysreg =
  68            (struct exynos5_sysreg *)samsung_get_base_sysreg();
  69        unsigned int cfg = 0;
  70
  71        /*
  72         * system register path set
  73         * 0: MIE/MDNIE
  74         * 1: FIMD Bypass
  75         */
  76        cfg = readl(&sysreg->disp1blk_cfg);
  77        cfg |= (1 << 15);
  78        writel(cfg, &sysreg->disp1blk_cfg);
  79}
  80
  81void set_system_display_ctrl(void)
  82{
  83        if (cpu_is_exynos4())
  84                exynos4_set_system_display();
  85        else
  86                exynos5_set_system_display();
  87}
  88