From patchwork Mon Jun 2 12:35:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartlomiej Zolnierkiewicz X-Patchwork-Id: 4281501 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 41F25BEEA7 for ; Mon, 2 Jun 2014 12:38:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 82829203B0 for ; Mon, 2 Jun 2014 12:38:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A1AD5203AB for ; Mon, 2 Jun 2014 12:38:08 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WrRTZ-0006mz-LA; Mon, 02 Jun 2014 12:36:29 +0000 Received: from mailout3.samsung.com ([203.254.224.33]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WrRTM-0006b3-PY for linux-arm-kernel@lists.infradead.org; Mon, 02 Jun 2014 12:36:17 +0000 Received: from epcpsbgm2.samsung.com (epcpsbgm2 [203.254.230.27]) by mailout3.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N6J001X1KCFRNC0@mailout3.samsung.com> for linux-arm-kernel@lists.infradead.org; Mon, 02 Jun 2014 21:36:16 +0900 (KST) X-AuditID: cbfee61b-b7fbb6d000001be3-2f-538c6fbf3072 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id 02.C2.07139.FBF6C835; Mon, 02 Jun 2014 21:36:15 +0900 (KST) Received: from mcdsrvbld02.digital.local ([106.116.37.23]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0N6J007MFKBF0910@mmp2.samsung.com>; Mon, 02 Jun 2014 21:36:15 +0900 (KST) From: Bartlomiej Zolnierkiewicz To: Kukjin Kim 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140602_053616_989703_61862899 X-CRM114-Status: GOOD ( 12.08 ) X-Spam-Score: -5.7 (-----) Cc: linux-samsung-soc@vger.kernel.org, linux-pm@vger.kernel.org, Sachin Kamat , Viresh Kumar , Tomasz Figa , Daniel Lezcano , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, Kyungmin Park , linaro-kernel@lists.linaro.org, linux-arm-kernel@lists.infradead.org, b.zolnierkie@samsung.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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)