From patchwork Fri Jun 24 11:05:58 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benoit Cousson X-Patchwork-Id: 915852 X-Patchwork-Delegate: b-cousson@ti.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p5OB6HgU010552 for ; Fri, 24 Jun 2011 11:06:37 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755257Ab1FXLGf (ORCPT ); Fri, 24 Jun 2011 07:06:35 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:35175 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755219Ab1FXLGe (ORCPT ); Fri, 24 Jun 2011 07:06:34 -0400 Received: from dlep34.itg.ti.com ([157.170.170.115]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id p5OB6VrJ000638 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 24 Jun 2011 06:06:31 -0500 Received: from dlep26.itg.ti.com (smtp-le.itg.ti.com [157.170.170.27]) by dlep34.itg.ti.com (8.13.7/8.13.8) with ESMTP id p5OB6VuC000259; Fri, 24 Jun 2011 06:06:31 -0500 (CDT) Received: from dlee73.ent.ti.com (localhost [127.0.0.1]) by dlep26.itg.ti.com (8.13.8/8.13.8) with ESMTP id p5OB6V5b006213; Fri, 24 Jun 2011 06:06:31 -0500 (CDT) Received: from dlelxv22.itg.ti.com (172.17.1.197) by DLEE73.ent.ti.com (157.170.170.88) with Microsoft SMTP Server id 8.3.106.1; Fri, 24 Jun 2011 06:06:30 -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 p5OB62v1024325; Fri, 24 Jun 2011 06:06:29 -0500 From: Benoit Cousson To: CC: rnayak@ti.com, santosh.shilimkar@ti.com, linux-omap@vger.kernel.org, Benoit Cousson Subject: [PATCH 12/14] OMAP4: cm: Add two new APIs for modulemode control Date: Fri, 24 Jun 2011 13:05:58 +0200 Message-ID: <1308913560-333-13-git-send-email-b-cousson@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Fri, 24 Jun 2011 11:06:37 +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 83498c1..3176ea6 100644 --- a/arch/arm/mach-omap2/cminst44xx.c +++ b/arch/arm/mach-omap2/cminst44xx.c @@ -263,3 +263,41 @@ 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, cdoffs + clkctrl_offs); + v &= ~OMAP4430_MODULEMODE_MASK; + v |= mode << OMAP4430_MODULEMODE_SHIFT; + omap4_cminst_write_inst_reg(v, part, inst, cdoffs + 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, cdoffs + clkctrl_offs); + v &= ~OMAP4430_MODULEMODE_MASK; + omap4_cminst_write_inst_reg(v, part, inst, cdoffs + 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