On 09/25/14 18:03, Thierry Reding wrote:
On Thu, Sep 25, 2014 at 05:23:32PM +0900, Kukjin Kim wrote:
On 09/24/14 21:24, Bartlomiej Zolnierkiewicz wrote:
On some platforms (i.e. EXYNOS ones) more than one idle mode is available and we need to distinguish them in firmware do_idle method.
Add mode parameter to do_idle firmware method and AFTR mode support to EXYNOS do_idle implementation.
This change is a preparation for adding secure firmware support to EXYNOS cpuidle driver.
This patch shouldn't cause any functionality changes.
Signed-off-by: Bartlomiej Zolnierkiewiczb.zolnierkie@samsung.com Acked-by: Kyungmin Parkkyungmin.park@samsung.com
v7:
fixed build on Tegra
updated summary line
arch/arm/include/asm/firmware.h | 2 +- arch/arm/mach-exynos/common.h | 5 +++++ arch/arm/mach-exynos/firmware.c | 10 ++++++++-- arch/arm/mach-tegra/cpuidle-tegra114.c | 2 +- 4 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/arch/arm/include/asm/firmware.h b/arch/arm/include/asm/firmware.h index 5904f59..89aefe1 100644 --- a/arch/arm/include/asm/firmware.h +++ b/arch/arm/include/asm/firmware.h @@ -28,7 +28,7 @@ struct firmware_ops { /* * Enters CPU idle mode */
- int (*do_idle)(void);
- int (*do_idle)(unsigned long mode); /*
*/
- Sets boot address of specified physical CPU
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h index c218200..2d830df 100644 --- a/arch/arm/mach-exynos/common.h +++ b/arch/arm/mach-exynos/common.h @@ -119,6 +119,11 @@ extern void __iomem *sysram_base_addr; extern void __iomem *pmu_base_addr; void exynos_sysram_init(void);
+enum {
- FW_DO_IDLE_SLEEP,
- FW_DO_IDLE_AFTR,
+};
void exynos_firmware_init(void);
extern u32 exynos_get_eint_wake_mask(void);
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index f5e626d..e57b7c3 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -28,9 +28,15 @@ #define EXYNOS_BOOT_ADDR 0x8 #define EXYNOS_BOOT_FLAG 0xc
-static int exynos_do_idle(void) +static int exynos_do_idle(unsigned long mode) {
- exynos_smc(SMC_CMD_SLEEP, 0, 0, 0);
- switch (mode) {
- case FW_DO_IDLE_AFTR:
exynos_smc(SMC_CMD_CPU0AFTR, 0, 0, 0);break;- case FW_DO_IDLE_SLEEP:
exynos_smc(SMC_CMD_SLEEP, 0, 0, 0);- } return 0; }
diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c index e3ebdce..425b6c8 100644 --- a/arch/arm/mach-tegra/cpuidle-tegra114.c +++ b/arch/arm/mach-tegra/cpuidle-tegra114.c @@ -49,7 +49,7 @@ static int tegra114_idle_power_down(struct cpuidle_device *dev, call_firmware_op(prepare_idle);
/* Do suspend by ourselves if the firmware does not implement it */
- if (call_firmware_op(do_idle) == -ENOSYS)
if (call_firmware_op(do_idle, 0) == -ENOSYS) cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT,&dev->cpu);
- Thierry(using nvidia.com e-mail address)
Hi Thierry,
For supporting AFTR mode in call_firmware_op(do_idle), need to modify tegra stuff as you can see. The functionality will be same with before. Is it OK to you? If you have no objection, I'd like to take this series into samsung tree.
I'm only aware of any devices using TrustedFirmware on Tegra, which is what the above code handles. The implementation for TrustedFirmware does not implement do_idle() (yet?) so I don't think this patch would cause any damage.
Acked-by: Thierry Redingtreding@nvidia.com
Thanks, I've applied this whole series.
- Kukjin