mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 00:21:59 +00:00
18cb680f1a
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>
102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
/*
|
|
* arch/arm/mach-imx/mm-imx27.c
|
|
*
|
|
* Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pinctrl/machine.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "common.h"
|
|
#include "devices/devices-common.h"
|
|
#include "hardware.h"
|
|
#include "iomux-v1.h"
|
|
|
|
/* MX27 memory map definition */
|
|
static struct map_desc imx27_io_desc[] __initdata = {
|
|
/*
|
|
* this fixed mapping covers:
|
|
* - AIPI1
|
|
* - AIPI2
|
|
* - AITC
|
|
* - ROM Patch
|
|
* - and some reserved space
|
|
*/
|
|
imx_map_entry(MX27, AIPI, MT_DEVICE),
|
|
/*
|
|
* this fixed mapping covers:
|
|
* - CSI
|
|
* - ATA
|
|
*/
|
|
imx_map_entry(MX27, SAHB1, MT_DEVICE),
|
|
/*
|
|
* this fixed mapping covers:
|
|
* - EMI
|
|
*/
|
|
imx_map_entry(MX27, X_MEMC, MT_DEVICE),
|
|
};
|
|
|
|
/*
|
|
* Initialize the memory map. It is called during the
|
|
* system startup to create static physical to virtual
|
|
* memory map for the IO modules.
|
|
*/
|
|
void __init mx27_map_io(void)
|
|
{
|
|
iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
|
|
}
|
|
|
|
void __init imx27_init_early(void)
|
|
{
|
|
mxc_set_cpu_type(MXC_CPU_MX27);
|
|
imx_iomuxv1_init(MX27_IO_ADDRESS(MX27_GPIO_BASE_ADDR),
|
|
MX27_NUM_GPIO_PORT);
|
|
}
|
|
|
|
void __init mx27_init_irq(void)
|
|
{
|
|
mxc_init_irq(MX27_IO_ADDRESS(MX27_AVIC_BASE_ADDR));
|
|
}
|
|
|
|
static const struct resource imx27_audmux_res[] __initconst = {
|
|
DEFINE_RES_MEM(MX27_AUDMUX_BASE_ADDR, SZ_4K),
|
|
};
|
|
|
|
void __init imx27_soc_init(void)
|
|
{
|
|
mxc_arch_reset_init(MX27_IO_ADDRESS(MX27_WDOG_BASE_ADDR));
|
|
mxc_device_init();
|
|
|
|
/* i.mx27 has the i.mx21 type gpio */
|
|
mxc_register_gpio("imx21-gpio", 0, MX27_GPIO1_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
|
|
mxc_register_gpio("imx21-gpio", 1, MX27_GPIO2_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
|
|
mxc_register_gpio("imx21-gpio", 2, MX27_GPIO3_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
|
|
mxc_register_gpio("imx21-gpio", 3, MX27_GPIO4_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
|
|
mxc_register_gpio("imx21-gpio", 4, MX27_GPIO5_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
|
|
mxc_register_gpio("imx21-gpio", 5, MX27_GPIO6_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
|
|
|
|
pinctrl_provide_dummies();
|
|
imx_add_imx_dma("imx27-dma", MX27_DMA_BASE_ADDR,
|
|
MX27_INT_DMACH0, 0); /* No ERR irq */
|
|
/* imx27 has the imx21 type audmux */
|
|
platform_device_register_simple("imx21-audmux", 0, imx27_audmux_res,
|
|
ARRAY_SIZE(imx27_audmux_res));
|
|
}
|