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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2012-07-05 01:25:58 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-07-06 20:40:17 +0200 |
| commit | 8459293c27bcd13aabacb7ee8097f6818f2ceedb (patch) | |
| tree | d61c97e8d9b81ffe57df0d2c39d4ebdecda8b642 /arch/arm | |
| parent | 444c5ed8d746140cd8f5591f708e5f1f84a9876e (diff) | |
| download | talos-op-linux-8459293c27bcd13aabacb7ee8097f6818f2ceedb.tar.gz talos-op-linux-8459293c27bcd13aabacb7ee8097f6818f2ceedb.zip | |
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-shmobile/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/include/mach/r8a7740.h | 6 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/pm-r8a7740.c | 30 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/setup-r8a7740.c | 5 |
4 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile index 3ffe4126922f..0df5ae6740c6 100644 --- a/arch/arm/mach-shmobile/Makefile +++ b/arch/arm/mach-shmobile/Makefile @@ -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 diff --git a/arch/arm/mach-shmobile/include/mach/r8a7740.h b/arch/arm/mach-shmobile/include/mach/r8a7740.h index 8bd7b9c136a1..e8c87e92a60d 100644 --- a/arch/arm/mach-shmobile/include/mach/r8a7740.h +++ b/arch/arm/mach-shmobile/include/mach/r8a7740.h @@ -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__ */ diff --git a/arch/arm/mach-shmobile/pm-r8a7740.c b/arch/arm/mach-shmobile/pm-r8a7740.c new file mode 100644 index 000000000000..d2fe81570a74 --- /dev/null +++ b/arch/arm/mach-shmobile/pm-r8a7740.c @@ -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 */ diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c index 48d7bbf0d2e2..c37ad75151f3 100644 --- a/arch/arm/mach-shmobile/setup-r8a7740.c +++ b/arch/arm/mach-shmobile/setup-r8a7740.c @@ -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, |
