u-boot/arch/arm/cpu/armv7/exynos/power.c
Rajeshwari Shinde c48ac11322 EXYNOS: Add power Enable/Disable for USB-EHCI
This patch adds functions to enable/disable the power of USB
host controller for EXYNOS5.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
2012-07-09 18:27:55 +02:00

76 lines
2.1 KiB
C

/*
* Copyright (C) 2012 Samsung Electronics
* Donghwa Lee <dh09.lee@samsung.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/power.h>
static void exynos4_mipi_phy_control(unsigned int dev_index,
unsigned int enable)
{
struct exynos4_power *pmu =
(struct exynos4_power *)samsung_get_base_power();
unsigned int addr, cfg = 0;
if (dev_index == 0)
addr = (unsigned int)&pmu->mipi_phy0_control;
else
addr = (unsigned int)&pmu->mipi_phy1_control;
cfg = readl(addr);
if (enable)
cfg |= (EXYNOS_MIPI_PHY_MRESETN | EXYNOS_MIPI_PHY_ENABLE);
else
cfg &= ~(EXYNOS_MIPI_PHY_MRESETN | EXYNOS_MIPI_PHY_ENABLE);
writel(cfg, addr);
}
void set_mipi_phy_ctrl(unsigned int dev_index, unsigned int enable)
{
if (cpu_is_exynos4())
exynos4_mipi_phy_control(dev_index, enable);
}
void exynos5_set_usbhost_phy_ctrl(unsigned int enable)
{
struct exynos5_power *power =
(struct exynos5_power *)samsung_get_base_power();
if (enable) {
/* Enabling USBHOST_PHY */
setbits_le32(&power->usbhost_phy_control,
POWER_USB_HOST_PHY_CTRL_EN);
} else {
/* Disabling USBHOST_PHY */
clrbits_le32(&power->usbhost_phy_control,
POWER_USB_HOST_PHY_CTRL_EN);
}
}
void set_usbhost_phy_ctrl(unsigned int enable)
{
if (cpu_is_exynos5())
exynos5_set_usbhost_phy_ctrl(enable);
}