From patchwork Wed Oct 16 11:08:14 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Figa X-Patchwork-Id: 3052171 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 89A4BBF924 for ; Wed, 16 Oct 2013 11:32:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5CED120483 for ; Wed, 16 Oct 2013 11:32:54 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F034C203AD for ; Wed, 16 Oct 2013 11:32:52 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWP0D-0005qe-Ug; Wed, 16 Oct 2013 11:10:59 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWOzR-0004tp-Iz; Wed, 16 Oct 2013 11:10:09 +0000 Received: from mailout1.w1.samsung.com ([210.118.77.11]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWOyH-0004lU-MA for linux-arm-kernel@lists.infradead.org; Wed, 16 Oct 2013 11:08:58 +0000 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MUR00GEODLNYT70@mailout1.w1.samsung.com> for linux-arm-kernel@lists.infradead.org; Wed, 16 Oct 2013 12:08:26 +0100 (BST) X-AuditID: cbfec7f4-b7f0a6d000007b1b-41-525e73aa9b39 Received: from eusync4.samsung.com ( [203.254.199.214]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id BA.BA.31515.AA37E525; Wed, 16 Oct 2013 12:08:26 +0100 (BST) Received: from amdc1227.digital.local ([106.116.147.199]) by eusync4.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MUR00FDLDLXRKB0@eusync4.samsung.com>; Wed, 16 Oct 2013 12:08:26 +0100 (BST) From: Tomasz Figa To: linux-samsung-soc@vger.kernel.org Subject: [PATCH 5/9] clk: samsung: exynos5420: Move suspend/resume handling to SoC driver Date: Wed, 16 Oct 2013 13:08:14 +0200 Message-id: <1381921698-5060-6-git-send-email-t.figa@samsung.com> X-Mailer: git-send-email 1.8.3.2 In-reply-to: <1381921698-5060-1-git-send-email-t.figa@samsung.com> References: <1381921698-5060-1-git-send-email-t.figa@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupkluLIzCtJLcpLzFFi42I5/e/4Nd1VxXFBBh3nBS3+P3rNatG74Cqb xdmmN+wWmx5fY7WYcX4fk8XTCRfZLKYsOsxqsX7GaxaLYzOWMFq0/93LZjFn+jsmB26PO9f2 sHlsXlLv0bdlFaPH9mvzmD0+b5ILYI3isklJzcksSy3St0vgyrjWuIO94IxkxecFH5gaGA+L djFyckgImEi0LtzOCmGLSVy4t56ti5GLQ0hgKaPEwU3/2SGcPiaJX90nGEGq2ATUJD43PGID sUUEVCU+ty1gB7GZBeYwS5zepwFiCwtES+x4fQZsKgtQzZ7Dz8B6eQUcJdp/bWWC2KYgsezL WmYQm1PASeLSgylgNUJANUt/7WObwMi7gJFhFaNoamlyQXFSeq6hXnFibnFpXrpecn7uJkZI 8H3Zwbj4mNUhRgEORiUe3hNRsUFCrIllxZW5hxglOJiVRHgjguOChHhTEiurUovy44tKc1KL DzEycXBKNTAunarfbd2xueWyhNTrYwH5Uzft/lG1oc9sL6tA7p3139lEC/qkLhw9I3q+es1q 0UT9XDG9texll4/NyzL8WcMmeG7BLquKn6Hq1mx/JRQelmxUm13JyJt5a6p23qtf94uVA05E Ra3Yb2Jwyqf76dN1YWxMxxS4ZpxxjFKxSH9bOrWSVahGL1SJpTgj0VCLuag4EQAZvAHBHAIA AA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131016_070857_869096_A231137E X-CRM114-Status: GOOD ( 12.82 ) X-Spam-Score: -4.4 (----) Cc: Yadwinder Singh Brar , Kukjin Kim , Mike Turquette , Heiko Stuebner , Tomasz Figa , Kyungmin Park , Thomas Abraham , Tushar Behera , linux-arm-kernel@lists.infradead.org, Rahul Sharma 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=-1.7 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=no 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 Since there are multiple differences in how suspend/resume of particular Exynos SoCs must be handled, SoC driver is better place for suspend/resume handlers and so this patch moves them. Signed-off-by: Tomasz Figa Signed-off-by: Kyungmin Park --- drivers/clk/samsung/clk-exynos5420.c | 49 ++++++++++++++++++++++++++++++++---- 1 file changed, 44 insertions(+), 5 deletions(-) diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c index 48c4a93..4ef1ee4 100644 --- a/drivers/clk/samsung/clk-exynos5420.c +++ b/drivers/clk/samsung/clk-exynos5420.c @@ -15,6 +15,7 @@ #include #include #include +#include #include "clk.h" @@ -149,6 +150,11 @@ enum exynos5420_clks { nr_clks, }; +static void __iomem *reg_base; + +#ifdef CONFIG_PM_SLEEP +static struct samsung_clk_reg_dump *exynos5420_save; + /* * list of controller registers to be saved and restored during a * suspend/resume cycle. @@ -215,6 +221,41 @@ static unsigned long exynos5420_clk_regs[] __initdata = { DIV_KFC0, }; +static int exynos5420_clk_suspend(void) +{ + samsung_clk_save(reg_base, exynos5420_save, + ARRAY_SIZE(exynos5420_clk_regs)); + + return 0; +} + +static void exynos5420_clk_resume(void) +{ + samsung_clk_restore(reg_base, exynos5420_save, + ARRAY_SIZE(exynos5420_clk_regs)); +} + +static struct syscore_ops exynos5420_clk_syscore_ops = { + .suspend = exynos5420_clk_suspend, + .resume = exynos5420_clk_resume, +}; + +static void exynos5420_clk_sleep_init(void) +{ + exynos5420_save = samsung_clk_alloc_reg_dump(exynos5420_clk_regs, + ARRAY_SIZE(exynos5420_clk_regs)); + if (!exynos5420_save) { + pr_warn("%s: failed to allocate sleep save data, no sleep support!\n", + __func__); + return; + } + + register_syscore_ops(&exynos5420_clk_syscore_ops); +} +#else +static void exynos5420_clk_sleep_init(void) {} +#endif + /* list of all parent clocks */ PNAME(mspll_cpu_p) = { "sclk_cpll", "sclk_dpll", "sclk_mpll", "sclk_spll" }; @@ -767,8 +808,6 @@ static struct of_device_id ext_clk_match[] __initdata = { /* register exynos5420 clocks */ static void __init exynos5420_clk_init(struct device_node *np) { - void __iomem *reg_base; - if (np) { reg_base = of_iomap(np, 0); if (!reg_base) @@ -777,9 +816,7 @@ static void __init exynos5420_clk_init(struct device_node *np) panic("%s: unable to determine soc\n", __func__); } - samsung_clk_init(np, reg_base, nr_clks, - exynos5420_clk_regs, ARRAY_SIZE(exynos5420_clk_regs), - NULL, 0); + samsung_clk_init(np, reg_base, nr_clks, NULL, 0, NULL, 0); samsung_clk_of_register_fixed_ext(exynos5420_fixed_rate_ext_clks, ARRAY_SIZE(exynos5420_fixed_rate_ext_clks), ext_clk_match); @@ -795,5 +832,7 @@ static void __init exynos5420_clk_init(struct device_node *np) ARRAY_SIZE(exynos5420_div_clks)); samsung_clk_register_gate(exynos5420_gate_clks, ARRAY_SIZE(exynos5420_gate_clks)); + + exynos5420_clk_sleep_init(); } CLK_OF_DECLARE(exynos5420_clk, "samsung,exynos5420-clock", exynos5420_clk_init);