From patchwork Fri Jul 1 21:09:17 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benoit Cousson X-Patchwork-Id: 938182 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p61LPZkC005436 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 1 Jul 2011 21:25:55 GMT Received: from canuck.infradead.org ([134.117.69.58]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Qcl1C-0002ut-5M; Fri, 01 Jul 2011 21:12:54 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1Qcl1A-00085M-FB; Fri, 01 Jul 2011 21:12:52 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Qcky8-0007I9-Hk for linux-arm-kernel@lists.infradead.org; Fri, 01 Jul 2011 21:09:48 +0000 Received: from dlep35.itg.ti.com ([157.170.170.118]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id p61L9hvi018714 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 1 Jul 2011 16:09:43 -0500 Received: from dlep26.itg.ti.com (smtp-le.itg.ti.com [157.170.170.27]) by dlep35.itg.ti.com (8.13.7/8.13.8) with ESMTP id p61L9hZ1008424; Fri, 1 Jul 2011 16:09:43 -0500 (CDT) Received: from dlee74.ent.ti.com (localhost [127.0.0.1]) by dlep26.itg.ti.com (8.13.8/8.13.8) with ESMTP id p61L9hst013009; Fri, 1 Jul 2011 16:09:43 -0500 (CDT) Received: from dlelxv22.itg.ti.com (172.17.1.197) by dlee74.ent.ti.com (157.170.170.8) with Microsoft SMTP Server id 8.3.106.1; Fri, 1 Jul 2011 16:09:43 -0500 Received: from localhost.localdomain (lncpu04.tif.ti.com [137.167.102.15]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id p61L9ORR016360; Fri, 1 Jul 2011 16:09:41 -0500 From: Benoit Cousson To: Subject: [PATCH v3 12/13] OMAP4: cm: Add two new APIs for modulemode control Date: Fri, 1 Jul 2011 23:09:17 +0200 Message-ID: <1309554558-19819-13-git-send-email-b-cousson@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1309554558-19819-1-git-send-email-b-cousson@ti.com> References: <1309554558-19819-1-git-send-email-b-cousson@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110701_170944_874046_549D3E3A X-CRM114-Status: GOOD ( 13.80 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [198.47.26.153 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain Cc: linux-omap@vger.kernel.org, rnayak@ti.com, Benoit Cousson , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Fri, 01 Jul 2011 21:25:55 +0000 (UTC) In OMAP4, a new programming model based on module control instead of clock control was introduced. Expose two APIs to allow the upper layer (omap_hwmod) to control the module mode independently of the parent clocks management. Signed-off-by: Benoit Cousson Cc: Paul Walmsley Cc: Rajendra Nayak --- arch/arm/mach-omap2/cminst44xx.c | 38 ++++++++++++++++++++++++++++++++++++++ arch/arm/mach-omap2/cminst44xx.h | 3 +++ 2 files changed, 41 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/cminst44xx.c b/arch/arm/mach-omap2/cminst44xx.c index fa44ff5..70f55a3 100644 --- a/arch/arm/mach-omap2/cminst44xx.c +++ b/arch/arm/mach-omap2/cminst44xx.c @@ -269,3 +269,41 @@ int omap4_cm_wait_module_idle(u8 part, u16 inst, s16 cdoffs, u16 clkctrl_offs) return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY; } + +/** + * omap4_cm_module_enable - Enable the modulemode inside CLKCTRL + * @mode: Module mode (SW or HW) + * @part: PRCM partition ID that the CM_CLKCTRL register exists in + * @inst: CM instance register offset (*_INST macro) + * @cdoffs: Clockdomain register offset (*_CDOFFS macro) + * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) + * No return value. + */ +void omap4_cm_module_enable(u8 mode, u8 part, u16 inst, s16 cdoffs, + u16 clkctrl_offs) +{ + u32 v; + + v = omap4_cminst_read_inst_reg(part, inst, clkctrl_offs); + v &= ~OMAP4430_MODULEMODE_MASK; + v |= mode << OMAP4430_MODULEMODE_SHIFT; + omap4_cminst_write_inst_reg(v, part, inst, clkctrl_offs); +} + +/** + * omap4_cm_module_disable - Disable the module inside CLKCTRL + * @part: PRCM partition ID that the CM_CLKCTRL register exists in + * @inst: CM instance register offset (*_INST macro) + * @cdoffs: Clockdomain register offset (*_CDOFFS macro) + * @clkctrl_offs: Module clock control register offset (*_CLKCTRL macro) + * No return value. + */ +void omap4_cm_module_disable(u8 part, u16 inst, s16 cdoffs, + u16 clkctrl_offs) +{ + u32 v; + + v = omap4_cminst_read_inst_reg(part, inst, clkctrl_offs); + v &= ~OMAP4430_MODULEMODE_MASK; + omap4_cminst_write_inst_reg(v, part, inst, clkctrl_offs); +} diff --git a/arch/arm/mach-omap2/cminst44xx.h b/arch/arm/mach-omap2/cminst44xx.h index 4c5da7d..8034e5c 100644 --- a/arch/arm/mach-omap2/cminst44xx.h +++ b/arch/arm/mach-omap2/cminst44xx.h @@ -20,6 +20,9 @@ extern void omap4_cminst_clkdm_force_wakeup(u8 part, s16 inst, u16 cdoffs); extern int omap4_cm_wait_module_ready(u8 part, u16 inst, s16 cdoffs, u16 clkctrl_offs); extern int omap4_cm_wait_module_idle(u8 part, u16 inst, s16 cdoffs, u16 clkctrl_offs); +extern void omap4_cm_module_enable(u8 mode, u8 part, u16 inst, s16 cdoffs, u16 clkctrl_offs); +extern void omap4_cm_module_disable(u8 part, u16 inst, s16 cdoffs, u16 clkctrl_offs); + /* * In an ideal world, we would not export these low-level functions, * but this will probably take some time to fix properly