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SH Driver Update for v3.16

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* PM Runtime enhancements targeted for use with
   ARM-based Renesas R-Car Gen2 SoCs
 * Restrict INTC_USERIMASK to SH4A as it is only used there
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Merge tag 'renesas-sh-drivers-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next

Pull SH driver update from Simon Horman:

 - PM Runtime enhancements targeted for use with ARM-based Renesas R-Car
   Gen2 SoCs

 - Restrict INTC_USERIMASK to SH4A as it is only used there

* tag 'renesas-sh-drivers-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  drivers: sh: Enable PM runtime for new R-Car Gen2 SoCs
  drivers: sh: pm_runtime implementation needs to suspend and resume devices
  drivers: sh: Restrict INTC_USERIMASK to SH4A
  drivers: sh: pm_runtime does not need idle callback
This commit is contained in:
Linus Torvalds 2014-06-06 11:44:09 -07:00
commit 75bcc84445
2 changed files with 35 additions and 7 deletions
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2
drivers/sh/intc/Kconfig
View file

@ -6,7 +6,7 @@ comment "Interrupt controller options"
config INTC_USERIMASK
bool "Userspace interrupt masking support"
depends on ARCH_SHMOBILE || (SUPERH && CPU_SH4A) || COMPILE_TEST
depends on (SUPERH && CPU_SH4A) || COMPILE_TEST
help
This enables support for hardware-assisted userspace hardirq
masking.

40
drivers/sh/pm_runtime.c
View file

@ -21,18 +21,43 @@
#include <linux/slab.h>
#ifdef CONFIG_PM_RUNTIME
static int default_platform_runtime_idle(struct device *dev)
static int sh_pm_runtime_suspend(struct device *dev)
{
/* suspend synchronously to disable clocks immediately */
int ret;
ret = pm_generic_runtime_suspend(dev);
if (ret) {
dev_err(dev, "failed to suspend device\n");
return ret;
}
ret = pm_clk_suspend(dev);
if (ret) {
dev_err(dev, "failed to suspend clock\n");
pm_generic_runtime_resume(dev);
return ret;
}
return 0;
}
static int sh_pm_runtime_resume(struct device *dev)
{
int ret;
ret = pm_clk_resume(dev);
if (ret) {
dev_err(dev, "failed to resume clock\n");
return ret;
}
return pm_generic_runtime_resume(dev);
}
static struct dev_pm_domain default_pm_domain = {
.ops = {
.runtime_suspend = pm_clk_suspend,
.runtime_resume = pm_clk_resume,
.runtime_idle = default_platform_runtime_idle,
.runtime_suspend = sh_pm_runtime_suspend,
.runtime_resume = sh_pm_runtime_resume,
USE_PLATFORM_PM_SLEEP_OPS
},
};
@ -63,6 +88,9 @@ static int __init sh_pm_runtime_init(void)
!of_machine_is_compatible("renesas,r8a7779") &&
!of_machine_is_compatible("renesas,r8a7790") &&
!of_machine_is_compatible("renesas,r8a7791") &&
!of_machine_is_compatible("renesas,r8a7792") &&
!of_machine_is_compatible("renesas,r8a7793") &&
!of_machine_is_compatible("renesas,r8a7794") &&
!of_machine_is_compatible("renesas,sh7372") &&
!of_machine_is_compatible("renesas,sh73a0"))
return 0;