From mboxrd@z Thu Jan 1 00:00:00 1970 From: b.zolnierkie@samsung.com (Bartlomiej Zolnierkiewicz) Date: Mon, 05 May 2014 12:57:15 +0200 Subject: [PATCH 3/7] ARM: EXYNOS: add AFTR mode support to firmware do_idle method In-Reply-To: <1399287439-31376-1-git-send-email-b.zolnierkie@samsung.com> References: <1399287439-31376-1-git-send-email-b.zolnierkie@samsung.com> Message-ID: <1399287439-31376-4-git-send-email-b.zolnierkie@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 (please note that do_idle firmware method is unused currently). Signed-off-by: Bartlomiej Zolnierkiewicz --- arch/arm/include/asm/firmware.h | 7 ++++++- arch/arm/mach-exynos/firmware.c | 10 ++++++++-- 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/arch/arm/include/asm/firmware.h b/arch/arm/include/asm/firmware.h index 70883c7..63989c3 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)(int mode); /* * Sets boot address of specified physical CPU */ @@ -47,6 +47,11 @@ struct firmware_ops { int (*c15resume)(u32 *regs); }; +enum { + FW_DO_IDLE_NORMAL, + FW_DO_IDLE_AFTR, +}; + /* Global pointer for current firmware_ops structure, can't be NULL. */ extern const struct firmware_ops *firmware_ops; diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index 581c7bf..71fe169 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -20,9 +20,15 @@ #include "smc.h" -static int exynos_do_idle(void) +static int exynos_do_idle(int 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_NORMAL: + exynos_smc(SMC_CMD_SLEEP, 0, 0, 0); + } return 0; } -- 1.8.2.3