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ARM: shmobile: r8a7740: add A4S pm domain support 

This patch adds basic A4S pm domain support.
Now, below devices can be controled by PM

Common-SHwy, Common-HPB, BSC, MFI, MMFROM, HS-SHwy,
SYS-HPB, INTCA, DBSC, DDRPHY (Logic),
ATAPI, GbEther, AXI-bus

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Kuninori Morimoto 2012-07-05 01:25:58 -07:00 committed by Rafael J. Wysocki
parent 444c5ed8d7
commit 8459293c27
4 changed files with 42 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-shmobile/Makefile
View File

@ -41,6 +41,7 @@ obj-$(CONFIG_SUSPEND) += suspend.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_ARCH_SHMOBILE) += pm-rmobile.o
obj-$(CONFIG_ARCH_SH7372) += pm-sh7372.o sleep-sh7372.o
obj-$(CONFIG_ARCH_R8A7740) += pm-r8a7740.o
obj-$(CONFIG_ARCH_R8A7779) += pm-r8a7779.o
# Board objects

6
arch/arm/mach-shmobile/include/mach/r8a7740.h
View File

@ -19,6 +19,8 @@
#ifndef __ASM_R8A7740_H__
#define __ASM_R8A7740_H__
#include <mach/pm-rmobile.h>
/*
* MD_CKx pin
*/
@ -604,4 +606,8 @@ enum {
SHDMA_SLAVE_USBHS_RX,
};
#ifdef CONFIG_PM
extern struct rmobile_pm_domain r8a7740_pd_a4s;
#endif /* CONFIG_PM */
#endif /* __ASM_R8A7740_H__ */

30
arch/arm/mach-shmobile/pm-r8a7740.c Normal file
View File

@ -0,0 +1,30 @@
/*
* r8a7740 power management support
*
* Copyright (C) 2012 Renesas Solutions Corp.
* Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <mach/pm-rmobile.h>
#ifdef CONFIG_PM
static int r8a7740_pd_a4s_suspend(void)
{
/*
* The A4S domain contains the CPU core and therefore it should
* only be turned off if the CPU is in use.
*/
return -EBUSY;
}
struct rmobile_pm_domain r8a7740_pd_a4s = {
.genpd.name = "A4S",
.bit_shift = 10,
.gov = &pm_domain_always_on_gov,
.no_debug = true,
.suspend = r8a7740_pd_a4s_suspend,
};
#endif /* CONFIG_PM */

5
arch/arm/mach-shmobile/setup-r8a7740.c
View File

@ -29,6 +29,7 @@
#include <linux/dma-mapping.h>
#include <mach/dma-register.h>
#include <mach/r8a7740.h>
#include <mach/pm-rmobile.h>
#include <mach/common.h>
#include <mach/irqs.h>
#include <asm/mach-types.h>
@ -671,6 +672,10 @@ void __init r8a7740_add_standard_devices(void)
r8a7740_i2c_workaround(&i2c0_device);
r8a7740_i2c_workaround(&i2c1_device);
/* PM domain */
rmobile_init_pm_domain(&r8a7740_pd_a4s);
/* add devices */
platform_add_devices(r8a7740_early_devices,
ARRAY_SIZE(r8a7740_early_devices));
platform_add_devices(r8a7740_late_devices,