From patchwork Mon Dec 20 16:59:13 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 421591 X-Patchwork-Delegate: khilman@deeprootsystems.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oBKGxY5w009219 for ; Mon, 20 Dec 2010 16:59:40 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932883Ab0LTQ7g (ORCPT ); Mon, 20 Dec 2010 11:59:36 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:52038 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932876Ab0LTQ7g (ORCPT ); Mon, 20 Dec 2010 11:59:36 -0500 Received: from dbdp31.itg.ti.com ([172.24.170.98]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id oBKGxQkk023153 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 20 Dec 2010 10:59:28 -0600 Received: from localhost.localdomain (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id oBKGxJua025246; Mon, 20 Dec 2010 22:29:24 +0530 (IST) From: Thara Gopinath To: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: khilman@deeprootsystems.com, paul@pwsan.com, b-cousson@ti.com, vishwanath.bs@ti.com, sawant@ti.com, nm@ti.com, Thara Gopinath Subject: [PATCH v6 06/10] OMAP3: PM: Adding smartreflex class3 driver Date: Mon, 20 Dec 2010 22:29:13 +0530 Message-Id: <1292864357-13939-7-git-send-email-thara@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1292864357-13939-1-git-send-email-thara@ti.com> References: <1292864357-13939-1-git-send-email-thara@ti.com> 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-4.2.3 (demeter1.kernel.org [140.211.167.41]); Mon, 20 Dec 2010 16:59:41 +0000 (UTC) diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 4e6adbd..1963f9e 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -62,6 +62,7 @@ obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o voltage.o \ obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o pm_bus.o obj-$(CONFIG_PM_DEBUG) += pm-debug.o obj-$(CONFIG_OMAP_SMARTREFLEX) += sr_device.o smartreflex.o +obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3) += smartreflex-class3.o AFLAGS_sleep24xx.o :=-Wa,-march=armv6 AFLAGS_sleep34xx.o :=-Wa,-march=armv7-a diff --git a/arch/arm/mach-omap2/smartreflex-class3.c b/arch/arm/mach-omap2/smartreflex-class3.c new file mode 100644 index 0000000..60e7055 --- /dev/null +++ b/arch/arm/mach-omap2/smartreflex-class3.c @@ -0,0 +1,59 @@ +/* + * Smart reflex Class 3 specific implementations + * + * Author: Thara Gopinath + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Thara Gopinath + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include + +static int sr_class3_enable(struct voltagedomain *voltdm) +{ + unsigned long volt = omap_voltage_get_nom_volt(voltdm); + + if (!volt) { + pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n", + __func__, voltdm->name); + return -ENODATA; + } + + omap_vp_enable(voltdm); + return sr_enable(voltdm, volt); +} + +static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset) +{ + omap_vp_disable(voltdm); + sr_disable(voltdm); + if (is_volt_reset) + omap_voltage_reset(voltdm); + + return 0; +} + +static int sr_class3_configure(struct voltagedomain *voltdm) +{ + return sr_configure_errgen(voltdm); +} + +/* SR class3 structure */ +static struct omap_sr_class_data class3_data = { + .enable = sr_class3_enable, + .disable = sr_class3_disable, + .configure = sr_class3_configure, + .class_type = SR_CLASS3, +}; + +/* Smartreflex Class3 init API to be called from board file */ +static int __init sr_class3_init(void) +{ + pr_info("SmartReflex Class3 initialized\n"); + return sr_register_class(&class3_data); +} +late_initcall(sr_class3_init); diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig index 95ceca0..4029e6a 100644 --- a/arch/arm/plat-omap/Kconfig +++ b/arch/arm/plat-omap/Kconfig @@ -57,6 +57,15 @@ config OMAP_SMARTREFLEX by default during system init via the enable_on_init flag which an be passed as platform data to the smartreflex driver. +config OMAP_SMARTREFLEX_CLASS3 + bool "Class 3 mode of Smartreflex Implementation" + depends on OMAP_SMARTREFLEX && TWL4030_CORE + help + Say Y to enable Class 3 implementation of Smartreflex + + Class 3 implementation of Smartreflex employs continuous hardware + voltage calibration. + config OMAP_RESET_CLOCKS bool "Reset unused clocks during boot" depends on ARCH_OMAP