Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751881AbaBGEf5 (ORCPT ); Thu, 6 Feb 2014 23:35:57 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:14033 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751739AbaBGEfz (ORCPT ); Thu, 6 Feb 2014 23:35:55 -0500 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Thu, 06 Feb 2014 20:33:50 -0800 From: Alexandre Courbot To: Stephen Warren , Thierry Reding , Russell King , Tomasz Figa CC: Olof Johansson , , , , , Alexandre Courbot Subject: [PATCH v2 5/6] ARM: trusted_foundations: implement prepare_idle() Date: Fri, 7 Feb 2014 13:35:05 +0900 Message-ID: <1391747706-1847-6-git-send-email-acourbot@nvidia.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1391747706-1847-1-git-send-email-acourbot@nvidia.com> References: <1391747706-1847-1-git-send-email-acourbot@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Support the prepare_idle() firmware call, which is necessary to properly support CPU idling. Signed-off-by: Alexandre Courbot --- arch/arm/firmware/trusted_foundations.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/arch/arm/firmware/trusted_foundations.c b/arch/arm/firmware/trusted_foundations.c index ef1e3d8f4af0..3fb1b5a1dce9 100644 --- a/arch/arm/firmware/trusted_foundations.c +++ b/arch/arm/firmware/trusted_foundations.c @@ -22,6 +22,15 @@ #define TF_SET_CPU_BOOT_ADDR_SMC 0xfffff200 +#define TF_CPU_PM 0xfffffffc +#define TF_CPU_PM_S3 0xffffffe3 +#define TF_CPU_PM_S2 0xffffffe6 +#define TF_CPU_PM_S2_NO_MC_CLK 0xffffffe5 +#define TF_CPU_PM_S1 0xffffffe4 +#define TF_CPU_PM_S1_NOFLUSH_L2 0xffffffe7 + +static unsigned long cpu_boot_addr; + static void __naked tf_generic_smc(u32 type, u32 arg1, u32 arg2) { asm volatile( @@ -41,13 +50,22 @@ static void __naked tf_generic_smc(u32 type, u32 arg1, u32 arg2) static int tf_set_cpu_boot_addr(int cpu, unsigned long boot_addr) { - tf_generic_smc(TF_SET_CPU_BOOT_ADDR_SMC, boot_addr, 0); + cpu_boot_addr = boot_addr; + tf_generic_smc(TF_SET_CPU_BOOT_ADDR_SMC, cpu_boot_addr, 0); + + return 0; +} + +static int tf_prepare_idle(void) +{ + tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S1_NOFLUSH_L2, cpu_boot_addr); return 0; } static const struct firmware_ops trusted_foundations_ops = { .set_cpu_boot_addr = tf_set_cpu_boot_addr, + .prepare_idle = tf_prepare_idle, }; void register_trusted_foundations(struct trusted_foundations_platform_data *pd) -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/