Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754500AbaFBMgV (ORCPT ); Mon, 2 Jun 2014 08:36:21 -0400 Received: from mailout3.samsung.com ([203.254.224.33]:44562 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754434AbaFBMgR (ORCPT ); Mon, 2 Jun 2014 08:36:17 -0400 X-AuditID: cbfee61b-b7fbb6d000001be3-2f-538c6fbf3072 From: Bartlomiej Zolnierkiewicz To: Kukjin Kim Cc: Daniel Lezcano , Tomasz Figa , Sachin Kamat , Viresh Kumar , "Rafael J. Wysocki" , Kyungmin Park , linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org, b.zolnierkie@samsung.com Subject: [PATCH v2 2/7] ARM: EXYNOS: add support for firmware-assisted c15resume Date: Mon, 02 Jun 2014 14:35:38 +0200 Message-id: <1401712543-14281-3-git-send-email-b.zolnierkie@samsung.com> X-Mailer: git-send-email 1.7.10.4 In-reply-to: <1401712543-14281-1-git-send-email-b.zolnierkie@samsung.com> References: <1401712543-14281-1-git-send-email-b.zolnierkie@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrKLMWRmVeSWpSXmKPExsVy+t9jQd39+T3BBre+WlpsnLGe1WLeZ1mL 3gVX2SzONr1ht3h/6BmzxabH11gtLu+aw2bxufcIo8WM8/uYLM6cvsRqcfJPL6PF+hmvWSw2 fvVw4PW4c20Pm8fmJfUet/89ZvbYcrWdxaNvyypGj8+b5ALYorhsUlJzMstSi/TtErgyljy6 yF4wn7fiyYWXrA2MfdxdjJwcEgImEp+3rWeEsMUkLtxbz9bFyMUhJDCdUaLv+l9GCKeLSeLN jIlgVWwCVhIT21eB2SICahI9i7eCFTEL7GWWWNq9iR0kISwQIHH8WBOYzSKgKrF+1iQmEJtX wENifccCqHWKEt3PJrCB2JwCnhIr7z1kBbGFgGr2vdrFNIGRdwEjwypG0dSC5ILipPRcI73i xNzi0rx0veT83E2M4MB8Jr2DcVWDxSFGAQ5GJR7eH+o9wUKsiWXFlbmHGCU4mJVEeJdaAIV4 UxIrq1KL8uOLSnNSiw8xSnOwKInzHmy1DhQSSE8sSc1OTS1ILYLJMnFwSjUwbj1y3ch5j4Yc 7/3SBfKWkfP5HnFx/eow+Zyf8fCS5Lx9pyet7b9588KLoxt9b7d1CW7yzhA8mt/i+e+tq8o/ 1dv7mqfF8Wr1FEhN1HYz042/POFV2i+TQ2U3bP5N+yR8sfnWhE+V0T7Bs0/vMssoyjustfbi Kq56nUYWn9pT62zWzVfysH8hrsRSnJFoqMVcVJwIAJrpZsVIAgAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tomasz Figa 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: Tomasz Figa [bzolnier: splitted out from bigger patch] Acked-by: Kyungmin Park Signed-off-by: Bartlomiej Zolnierkiewicz --- arch/arm/include/asm/firmware.h | 4 ++++ arch/arm/mach-exynos/firmware.c | 8 ++++++++ 2 files changed, 12 insertions(+) diff --git a/arch/arm/include/asm/firmware.h b/arch/arm/include/asm/firmware.h index c72ec47..70883c7 100644 --- a/arch/arm/include/asm/firmware.h +++ b/arch/arm/include/asm/firmware.h @@ -41,6 +41,10 @@ struct firmware_ops { * Initializes L2 cache */ int (*l2x0_init)(void); + /* + * Restores coprocessor 15 registers + */ + int (*c15resume)(u32 *regs); }; /* Global pointer for current firmware_ops structure, can't be NULL. */ diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index eb91d23..195b65c 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -64,10 +64,18 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) return 0; } +static int exynos_c15resume(u32 *regs) +{ + exynos_smc(SMC_CMD_C15RESUME, regs[0], regs[1], 0); + + return 0; +} + static const struct firmware_ops exynos_firmware_ops = { .do_idle = exynos_do_idle, .set_cpu_boot_addr = exynos_set_cpu_boot_addr, .cpu_boot = exynos_cpu_boot, + .c15resume = exynos_c15resume, }; void __init exynos_firmware_init(void) -- 1.8.2.3 -- 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/