kernel-ark/arch/arm/mach-imx/mm-imx1.c
Shawn Guo 18cb680f1a ARM: imx: move clk_prepare() out from mxc_restart()
It's inappropriate to call clk_prepare() in mxc_restart(), because the
restart routine could be called in atomic context.  Move clk_get() and
clk_prepare() into mxc_arch_reset_init() and only have the atomic part
clk_enable() be called in mxc_restart().

As a result, mxc_arch_reset_init() needs to be called after clk gets
initialized.

While there, it also changes printk(KERN_ERR ...) to pr_err() and adds
__init annotation for mxc_arch_reset_init().

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-06-17 15:45:10 +08:00

68 lines
1.8 KiB
C

/*
* author: Sascha Hauer
* Created: april 20th, 2004
* Copyright: Synertronixx GmbH
*
* Common code for i.MX1 machines
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/pinctrl/machine.h>
#include <asm/mach/map.h>
#include "common.h"
#include "devices/devices-common.h"
#include "hardware.h"
#include "iomux-v1.h"
static struct map_desc imx_io_desc[] __initdata = {
imx_map_entry(MX1, IO, MT_DEVICE),
};
void __init mx1_map_io(void)
{
iotable_init(imx_io_desc, ARRAY_SIZE(imx_io_desc));
}
void __init imx1_init_early(void)
{
mxc_set_cpu_type(MXC_CPU_MX1);
imx_iomuxv1_init(MX1_IO_ADDRESS(MX1_GPIO_BASE_ADDR),
MX1_NUM_GPIO_PORT);
}
void __init mx1_init_irq(void)
{
mxc_init_irq(MX1_IO_ADDRESS(MX1_AVIC_BASE_ADDR));
}
void __init imx1_soc_init(void)
{
mxc_arch_reset_init(MX1_IO_ADDRESS(MX1_WDT_BASE_ADDR));
mxc_device_init();
mxc_register_gpio("imx1-gpio", 0, MX1_GPIO1_BASE_ADDR, SZ_256,
MX1_GPIO_INT_PORTA, 0);
mxc_register_gpio("imx1-gpio", 1, MX1_GPIO2_BASE_ADDR, SZ_256,
MX1_GPIO_INT_PORTB, 0);
mxc_register_gpio("imx1-gpio", 2, MX1_GPIO3_BASE_ADDR, SZ_256,
MX1_GPIO_INT_PORTC, 0);
mxc_register_gpio("imx1-gpio", 3, MX1_GPIO4_BASE_ADDR, SZ_256,
MX1_GPIO_INT_PORTD, 0);
imx_add_imx_dma("imx1-dma", MX1_DMA_BASE_ADDR,
MX1_DMA_INT, MX1_DMA_ERR);
pinctrl_provide_dummies();
}