Messages in this thread | | | Date | Tue, 30 Jun 2015 17:24:31 +0100 | From | Sudeep Holla <> | Subject | Re: [PATCH v2 5/5] cpuidle: ARM: Add cpuidle driver for K1879XB1YA |
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On 30/06/15 16:15, Andrew Andrianov wrote: > Signed-off-by: Andrew Andrianov <andrew@ncrmnt.org> > --- > drivers/cpuidle/Kconfig.arm | 6 +++++ > drivers/cpuidle/Makefile | 1 + > drivers/cpuidle/cpuidle-rcm-k1879xb1.c | 48 ++++++++++++++++++++++++++++++++++ > 3 files changed, 55 insertions(+) > create mode 100644 drivers/cpuidle/cpuidle-rcm-k1879xb1.c > > diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm > index 21340e0..988bfa3 100644 > --- a/drivers/cpuidle/Kconfig.arm > +++ b/drivers/cpuidle/Kconfig.arm > @@ -74,3 +74,9 @@ config ARM_MVEBU_V7_CPUIDLE > depends on ARCH_MVEBU && !ARM64 > help > Select this to enable cpuidle on Armada 370, 38x and XP processors. > + > +config ARM_RCM_K1879XB1_CPUIDLE > + bool "CPU Idle Driver for RC Module's K1879XB1YA SoC" > + depends on ARCH_RCM_K1879XB1 && !ARM64 > + help > + Select this to enable cpuidle on K1879XB1YA SoC. > diff --git a/drivers/cpuidle/Makefile b/drivers/cpuidle/Makefile > index 3ba81b1..71b7e16 100644 > --- a/drivers/cpuidle/Makefile > +++ b/drivers/cpuidle/Makefile > @@ -17,6 +17,7 @@ obj-$(CONFIG_ARM_ZYNQ_CPUIDLE) += cpuidle-zynq.o > obj-$(CONFIG_ARM_U8500_CPUIDLE) += cpuidle-ux500.o > obj-$(CONFIG_ARM_AT91_CPUIDLE) += cpuidle-at91.o > obj-$(CONFIG_ARM_EXYNOS_CPUIDLE) += cpuidle-exynos.o > +obj-$(CONFIG_ARM_RCM_K1879XB1_CPUIDLE) += cpuidle-rcm-k1879xb1.o > obj-$(CONFIG_ARM_CPUIDLE) += cpuidle-arm.o > > ############################################################################### > diff --git a/drivers/cpuidle/cpuidle-rcm-k1879xb1.c b/drivers/cpuidle/cpuidle-rcm-k1879xb1.c > new file mode 100644 > index 0000000..7c621b6 > --- /dev/null > +++ b/drivers/cpuidle/cpuidle-rcm-k1879xb1.c > @@ -0,0 +1,48 @@ > +/* > + * CPU idle for RC Module K1879XB1YA SoC > + * > + * Copyright (C) 2015 RC Module. > + * http://www.module.ru/ > + * > + * Andrew Andrianov <andrew@ncrmnt.org> > + * > + * Based on Davinci CPU idle code > + * (arch/arm/mach-davinci/cpuidle.c) > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + */ > + > +#include <linux/io.h> > +#include <linux/platform_device.h> > +#include <linux/cpuidle.h> > +#include <asm/cpuidle.h> > + > +/* > + * We only enable WFI here, since DDR will enter self-refresh > + * on it's own when it can (bootloader takes care to configure that) > + */ > + > +static struct cpuidle_driver rcm_idle_driver = { > + .name = "rcm_k1879xb1_idle", > + .states[0] = ARM_CPUIDLE_WFI_STATE,
Do you plan to add more states in future ? Otherwise default_idle_call will be sufficient to enter WFI and you need not register any cpuidle driver.
Regards, Sudeep
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