From patchwork Tue Nov 13 13:08:24 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Figa X-Patchwork-Id: 1733911 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 9633A3FCAE for ; Tue, 13 Nov 2012 13:11:50 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TYGFS-0001na-QS; Tue, 13 Nov 2012 13:09:50 +0000 Received: from mailout3.samsung.com ([203.254.224.33]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TYGFA-0001g0-Po for linux-arm-kernel@lists.infradead.org; Tue, 13 Nov 2012 13:09:37 +0000 Received: from epcpsbgm1.samsung.com (epcpsbgm1 [203.254.230.26]) by mailout3.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MDF0072EGJRRJF0@mailout3.samsung.com> for linux-arm-kernel@lists.infradead.org; Tue, 13 Nov 2012 22:09:31 +0900 (KST) X-AuditID: cbfee61a-b7fa66d0000004cf-f9-50a2468b412d Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 87.C1.01231.B8642A05; Tue, 13 Nov 2012 22:09:31 +0900 (KST) Received: from mcdsrvbld02.digital.local ([106.116.37.23]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MDF007RLGI5YYA0@mmp1.samsung.com> for linux-arm-kernel@lists.infradead.org; Tue, 13 Nov 2012 22:09:31 +0900 (KST) From: Tomasz Figa To: linux-samsung-soc@vger.kernel.org Subject: [PATCH v3 1/4] ARM: EXYNOS: pm_domain: Detect domain state on registration from DT Date: Tue, 13 Nov 2012 14:08:24 +0100 Message-id: <1352812107-8777-2-git-send-email-t.figa@samsung.com> X-Mailer: git-send-email 1.7.10 In-reply-to: <1352812107-8777-1-git-send-email-t.figa@samsung.com> References: <1352812107-8777-1-git-send-email-t.figa@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMJMWRmVeSWpSXmKPExsVy+t9jAd1ut0UBBhd+6VhsenyN1YHRY/OS +gDGKC6blNSczLLUIn27BK6Mx9sWsRd8Eqj4vn8CewPjH94uRk4OCQETic4H7WwQtpjEhXvr gWwuDiGBRYwSv5a0MUI4m5kk9jy8zwJSxSagJvG54RFYh4iAqsTntgXsIEXMAs8ZJfoWPAMr EhaIlTiy/iwjiM0CVLTl30lWEJtXwFGibfdcJoh18hJP7/eBDeIUcJI4/moBWL0QUE3j0gNs Exh5FzAyrGIUTS1ILihOSs811CtOzC0uzUvXS87P3cQI9vozqR2MKxssDjEKcDAq8fDecFkY IMSaWFZcmXuIUYKDWUmE10BqUYAQb0piZVVqUX58UWlOavEhRmkOFiVx3maPlAAhgfTEktTs 1NSC1CKYLBMHp1QDo+UPxnTuYyt5mAX2vMqffIJHkOXbUxHjYzPafv6znfgsXPTObr+eOuVP 7qs1vD+uP7Tl9J3jwZf+lXDlLD/ZoLxJ/7jCHnGt6Z/qW/ZvrhCxfxlzyutFNueK9parR+dN UrpdxF7cyn3S7ctdNsNNaa1X/abndRnF8MUZXJgvol0v3PNPTH7mdyWW4oxEQy3mouJEABgf WYb2AQAA X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20121113_080933_367580_E93882C4 X-CRM114-Status: GOOD ( 11.07 ) X-Spam-Score: -7.6 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [203.254.224.33 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: kgene.kim@samsung.com, linux-pm@vger.kernel.org, t.figa@samsung.com, tomasz.figa@gmail.com, rjw@sisk.pl, kyungmin.park@samsung.com, thomas.abraham@linaro.org, linux-arm-kernel@lists.infradead.org, m.szyprowski@samsung.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Initial state of power domains might vary on different boards and with different bootloaders. This patch adds detection of initial state of power domains when being registered from DT. Signed-off-by: Tomasz Figa Signed-off-by: Kyungmin Park --- Documentation/devicetree/bindings/arm/exynos/power_domain.txt | 4 ---- arch/arm/mach-exynos/pm_domains.c | 8 +++++--- 2 files changed, 5 insertions(+), 7 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt index 6528e21..843b546 100644 --- a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt +++ b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt @@ -9,10 +9,6 @@ Required Properties: - reg: physical base address of the controller and length of memory mapped region. -Optional Properties: -- samsung,exynos4210-pd-off: Specifies that the power domain is in turned-off - state during boot and remains to be turned-off until explicitly turned-on. - Example: lcd0: power-domain-lcd0 { diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index c0bc83a..d1abc1a 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -89,6 +89,7 @@ static __init int exynos_pm_dt_parse_domains(void) for_each_compatible_node(np, NULL, "samsung,exynos4210-pd") { struct exynos_pm_domain *pd; + int on; pd = kzalloc(sizeof(*pd), GFP_KERNEL); if (!pd) { @@ -97,14 +98,15 @@ static __init int exynos_pm_dt_parse_domains(void) return -ENOMEM; } - if (of_get_property(np, "samsung,exynos4210-pd-off", NULL)) - pd->is_off = true; pd->name = np->name; pd->base = of_iomap(np, 0); pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; pd->pd.of_node = np; - pm_genpd_init(&pd->pd, NULL, false); + + on = __raw_readl(pd->base + 0x4) & S5P_INT_LOCAL_PWR_EN; + + pm_genpd_init(&pd->pd, NULL, !on); } return 0; }