From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756335AbaEEK7O (ORCPT ); Mon, 5 May 2014 06:59:14 -0400 Received: from mailout3.samsung.com ([203.254.224.33]:53373 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752582AbaEEK7I (ORCPT ); Mon, 5 May 2014 06:59:08 -0400 X-AuditID: cbfee61a-b7f2b6d000006c4d-b7-53676ef10155 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 2/7] ARM: EXYNOS: add support for firmware-assisted c15resume Date: Mon, 05 May 2014 12:57:14 +0200 Message-id: <1399287439-31376-3-git-send-email-b.zolnierkie@samsung.com> X-Mailer: git-send-email 1.7.10.4 In-reply-to: <1399287439-31376-1-git-send-email-b.zolnierkie@samsung.com> References: <1399287439-31376-1-git-send-email-b.zolnierkie@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrCLMWRmVeSWpSXmKPExsVy+t9jAd2PeenBBpP/6lhsnLGe1WLeZ1mL 3gVX2SzONr1ht3h/6BmzxabH11gtLu+aw2bxufcIo8WM8/uYLM6cvsRqcfJPL6PF+hmvWSw2 fvVw4PW4c20Pm8fmJfUet/89ZvbYcrWdxaNvyypGj8+b5ALYorhsUlJzMstSi/TtErgyVq99 z1Lwiqfi/ed+pgbGe1xdjJwcEgImEn1v7zBC2GISF+6tZ+ti5OIQEljEKNHfs5wdwulikti0 8jUbSBWbgJXExPZVYB0iAmoSPYu3MoIUMQvsZZZY2r2JHSQhLOAr8fXUJTCbRUBVYsvEj0BF HBy8Ah4SDcsEILYpSnQ/mwA2k1PAU2Lp5sfMILYQUMmGt+1sExh5FzAyrGIUTS1ILihOSs81 1CtOzC0uzUvXS87P3cQIDstnUjsYVzZYHGIU4GBU4uFNYE4PFmJNLCuuzD3EKMHBrCTCm50I FOJNSaysSi3Kjy8qzUktPsQozcGiJM57oNU6UEggPbEkNTs1tSC1CCbLxMEp1cA454B3/4VV U3Wcmr88ObFoz5PMswrt7Jem8E2Y1LHxotLEtcfLp35csCfBdwpnaeytqU+MUvZ8zFt89XRO xkrFQ2fMvjxbayayPn2uurZd6r/c+d8UWbOeSLWXdoY8Sns/T8iw5WL1QgHGv//3xXiZV2tb T1s0W85LT2vpS6YFwUUfvsxe5h9XrMRSnJFoqMVcVJwIAGf3/HpHAgAA 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] 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 932129e..581c7bf 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -40,10 +40,18 @@ 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