From patchwork Thu Feb 6 18:16:53 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Figa X-Patchwork-Id: 3597651 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 C4537BF418 for ; Thu, 6 Feb 2014 18:21:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BE7C12012F for ; Thu, 6 Feb 2014 18:21:10 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (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 9A72320109 for ; Thu, 6 Feb 2014 18:21:09 +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 1WBTXK-0004fR-MO; Thu, 06 Feb 2014 18:18:55 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WBTWl-0007xd-TI; Thu, 06 Feb 2014 18:18:19 +0000 Received: from mailout2.w1.samsung.com ([210.118.77.12]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WBTVz-0007rP-4m for linux-arm-kernel@lists.infradead.org; Thu, 06 Feb 2014 18:17:36 +0000 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout2.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N0L00JM26SD6LA0@mailout2.w1.samsung.com> for linux-arm-kernel@lists.infradead.org; Thu, 06 Feb 2014 18:17:01 +0000 (GMT) X-AuditID: cbfec7f4-b7f796d000005a13-6d-52f3d1a1f364 Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 60.EB.23059.1A1D3F25; Thu, 06 Feb 2014 18:17:05 +0000 (GMT) Received: from AMDC1227.digital.local ([106.116.147.199]) by eusync1.samsung.com (Oracle Communications Messaging Server 7u4-23.01(7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0N0L00ISD6SBFN00@eusync1.samsung.com>; Thu, 06 Feb 2014 18:17:05 +0000 (GMT) From: Tomasz Figa To: linux-samsung-soc@vger.kernel.org Subject: [PATCH v2 6/9] clk: samsung: s3c64xx: Move suspend/resume handling to SoC driver Date: Thu, 06 Feb 2014 19:16:53 +0100 Message-id: <1391710616-14226-7-git-send-email-t.figa@samsung.com> X-Mailer: git-send-email 1.8.5.2 In-reply-to: <1391710616-14226-1-git-send-email-t.figa@samsung.com> References: <1391710616-14226-1-git-send-email-t.figa@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmphluLIzCtJLcpLzFFi42I5/e/4Zd2FFz8HGay5yG/x/9FrVoveBVfZ LM42vWG32PT4GqvFjPP7mCzWHrnLbvF0wkU2i4Uv4i3Wz3jNYnFsxhJGBy6PnbPusnvcubaH zWPzknqPvi2rGD22X5vH7PF5k1wAWxSXTUpqTmZZapG+XQJXxoXrIgUXFSpm7HjL3sD4V6qL kYNDQsBEovlXbBcjJ5ApJnHh3nq2LkYuDiGBpYwSX6+9YIJw+pgkXj/eyQZSxSagJvG54RGY LSKgKvG5bQE7SBGzwB8miVM37oIlhAWiJZ4f3sMGsoEFqKh9lihImFfASWLOm1XMEIsVJFZf FwIxOQWcJZ6eZwKpEAKqmP70KfsERt4FjAyrGEVTS5MLipPScw31ihNzi0vz0vWS83M3MUJC 7ssOxsXHrA4xCnAwKvHwnlj6OUiINbGsuDL3EKMEB7OSCK/mXqAQb0piZVVqUX58UWlOavEh RiYOTqkGxhWHFlZ2PLvp7yb+JSNjiugek/D4VZ4FwQe5LKPif9X0vLKTd1CujpsfK2DZdL1p 59Hwp/El86NYi+RtQpPksl6+03LZr3Iv7MT23XpZXZMDoj9ceKO4bsvJ1i/zrPTKVO+LxDYc aqg9dlty3cl9/Trbq6ftXfaB8/0svkV//wa9WpZR8Tf3vRJLcUaioRZzUXEiALK1Nb0XAgAA X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140206_131731_317022_DE3BC565 X-CRM114-Status: GOOD ( 12.55 ) X-Spam-Score: -7.4 (-------) Cc: Kukjin Kim , Mike Turquette , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Tomasz Figa , Kyungmin Park , Thomas Abraham , Rahul Sharma , linux-arm-kernel@lists.infradead.org, Marek Szyprowski 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=-4.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 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 Acked-by: Kyungmin Park --- drivers/clk/samsung/clk-s3c64xx.c | 79 +++++++++++++++++++++++++++++++++------ 1 file changed, 68 insertions(+), 11 deletions(-) diff --git a/drivers/clk/samsung/clk-s3c64xx.c b/drivers/clk/samsung/clk-s3c64xx.c index 8e27aee..d3fbfa5 100644 --- a/drivers/clk/samsung/clk-s3c64xx.c +++ b/drivers/clk/samsung/clk-s3c64xx.c @@ -13,6 +13,7 @@ #include #include #include +#include #include @@ -61,6 +62,13 @@ enum s3c64xx_plls { apll, mpll, epll, }; +static void __iomem *reg_base; +static bool is_s3c6400; + +#ifdef CONFIG_PM_SLEEP +static struct samsung_clk_reg_dump *s3c64xx_save_common; +static struct samsung_clk_reg_dump *s3c64xx_save_soc; + /* * List of controller registers to be saved and restored during * a suspend/resume cycle. @@ -87,6 +95,60 @@ static unsigned long s3c6410_clk_regs[] __initdata = { MEM0_GATE, }; +static int s3c64xx_clk_suspend(void) +{ + samsung_clk_save(reg_base, s3c64xx_save_common, + ARRAY_SIZE(s3c64xx_clk_regs)); + + if (!is_s3c6400) + samsung_clk_save(reg_base, s3c64xx_save_soc, + ARRAY_SIZE(s3c6410_clk_regs)); + + return 0; +} + +static void s3c64xx_clk_resume(void) +{ + samsung_clk_restore(reg_base, s3c64xx_save_common, + ARRAY_SIZE(s3c64xx_clk_regs)); + + if (!is_s3c6400) + samsung_clk_restore(reg_base, s3c64xx_save_soc, + ARRAY_SIZE(s3c6410_clk_regs)); +} + +static struct syscore_ops s3c64xx_clk_syscore_ops = { + .suspend = s3c64xx_clk_suspend, + .resume = s3c64xx_clk_resume, +}; + +static void s3c64xx_clk_sleep_init(void) +{ + s3c64xx_save_common = samsung_clk_alloc_reg_dump(s3c64xx_clk_regs, + ARRAY_SIZE(s3c64xx_clk_regs)); + if (!s3c64xx_save_common) + goto err_warn; + + if (!is_s3c6400) { + s3c64xx_save_soc = samsung_clk_alloc_reg_dump(s3c6410_clk_regs, + ARRAY_SIZE(s3c6410_clk_regs)); + if (!s3c64xx_save_soc) + goto err_soc; + } + + register_syscore_ops(&s3c64xx_clk_syscore_ops); + return; + +err_soc: + kfree(s3c64xx_save_common); +err_warn: + pr_warn("%s: failed to allocate sleep save data, no sleep support!\n", + __func__); +} +#else +static void s3c64xx_clk_sleep_init(void) {} +#endif + /* List of parent clocks common for all S3C64xx SoCs. */ PNAME(spi_mmc_p) = { "mout_epll", "dout_mpll", "fin_pll", "clk27m" }; PNAME(uart_p) = { "mout_epll", "dout_mpll" }; @@ -391,11 +453,11 @@ static void __init s3c64xx_clk_register_fixed_ext(unsigned long fin_pll_f, /* Register s3c64xx clocks. */ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f, - unsigned long xusbxti_f, bool is_s3c6400, - void __iomem *reg_base) + unsigned long xusbxti_f, bool s3c6400, + void __iomem *base) { - unsigned long *soc_regs = NULL; - unsigned long nr_soc_regs = 0; + reg_base = base; + is_s3c6400 = s3c6400; if (np) { reg_base = of_iomap(np, 0); @@ -403,13 +465,7 @@ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f, panic("%s: failed to map registers\n", __func__); } - if (!is_s3c6400) { - soc_regs = s3c6410_clk_regs; - nr_soc_regs = ARRAY_SIZE(s3c6410_clk_regs); - } - - samsung_clk_init(np, reg_base, NR_CLKS, s3c64xx_clk_regs, - ARRAY_SIZE(s3c64xx_clk_regs), soc_regs, nr_soc_regs); + samsung_clk_init(np, reg_base, NR_CLKS, NULL, 0, NULL, 0); /* Register external clocks. */ if (!np) @@ -452,6 +508,7 @@ void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f, samsung_clk_register_alias(s3c64xx_clock_aliases, ARRAY_SIZE(s3c64xx_clock_aliases)); + s3c64xx_clk_sleep_init(); pr_info("%s clocks: apll = %lu, mpll = %lu\n" "\tepll = %lu, arm_clk = %lu\n",