From patchwork Wed Dec 7 13:53:18 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Liu X-Patchwork-Id: 5527 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id 6747123E03 for ; Wed, 7 Dec 2011 13:53:47 +0000 (UTC) Received: from mail-ey0-f180.google.com (mail-ey0-f180.google.com [209.85.215.180]) by fiordland.canonical.com (Postfix) with ESMTP id 5B679A18C9E for ; Wed, 7 Dec 2011 13:53:47 +0000 (UTC) Received: by eaac11 with SMTP id c11so575379eaa.11 for ; Wed, 07 Dec 2011 05:53:47 -0800 (PST) Received: by 10.213.33.203 with SMTP id i11mr3475889ebd.32.1323266027112; Wed, 07 Dec 2011 05:53:47 -0800 (PST) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.205.129.2 with SMTP id hg2cs71154bkc; Wed, 7 Dec 2011 05:53:46 -0800 (PST) Received: by 10.236.190.130 with SMTP id e2mr26616027yhn.107.1323266024290; Wed, 07 Dec 2011 05:53:44 -0800 (PST) Received: from mail-yx0-f178.google.com (mail-yx0-f178.google.com [209.85.213.178]) by mx.google.com with ESMTPS id l30si1397126yhm.123.2011.12.07.05.53.43 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 07 Dec 2011 05:53:44 -0800 (PST) Received-SPF: neutral (google.com: 209.85.213.178 is neither permitted nor denied by best guess record for domain of paul.liu@linaro.org) client-ip=209.85.213.178; Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.213.178 is neither permitted nor denied by best guess record for domain of paul.liu@linaro.org) smtp.mail=paul.liu@linaro.org Received: by mail-yx0-f178.google.com with SMTP id m5so531731yen.37 for ; Wed, 07 Dec 2011 05:53:43 -0800 (PST) Received: by 10.236.190.197 with SMTP id e45mr27203289yhn.101.1323266023319; Wed, 07 Dec 2011 05:53:43 -0800 (PST) Received: from freya.lan (host-77.138-185-111.static.totalbb.net.tw. [111.185.138.77]) by mx.google.com with ESMTPS id q16sm5141914anb.19.2011.12.07.05.53.38 (version=SSLv3 cipher=OTHER); Wed, 07 Dec 2011 05:53:41 -0800 (PST) From: "Ying-Chun Liu (PaulLiu)" To: linux-kernel@vger.kernel.org, linaro-dev@lists.linaro.org Cc: patches@linaro.org, eric.miao@linaro.org, broonie@opensource.wolfsonmicro.com, "Ying-Chun Liu (PaulLiu)" , Nancy Chen , Liam Girdwood Subject: [PATCH] Regulator: Add Anatop regulator driver Date: Wed, 7 Dec 2011 21:53:18 +0800 Message-Id: <1323265998-29088-2-git-send-email-paul.liu@linaro.org> X-Mailer: git-send-email 1.7.7.3 In-Reply-To: <1323265998-29088-1-git-send-email-paul.liu@linaro.org> References: <1323265998-29088-1-git-send-email-paul.liu@linaro.org> From: "Ying-Chun Liu (PaulLiu)" Anatop regulator driver is used by i.MX6 SoC. This patch adds the Anatop regulator driver. Signed-off-by: Nancy Chen Signed-off-by: Ying-Chun Liu (PaulLiu) Cc: Mark Brown Cc: Liam Girdwood --- drivers/regulator/Kconfig | 7 + drivers/regulator/Makefile | 1 + drivers/regulator/anatop-regulator.c | 236 ++++++++++++++++++++++++++++ include/linux/regulator/anatop-regulator.h | 82 ++++++++++ 4 files changed, 326 insertions(+), 0 deletions(-) create mode 100644 drivers/regulator/anatop-regulator.c create mode 100644 include/linux/regulator/anatop-regulator.h diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 9713b1b..790eca5 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -327,5 +327,12 @@ config REGULATOR_AAT2870 If you have a AnalogicTech AAT2870 say Y to enable the regulator driver. +config REGULATOR_ANATOP + tristate "ANATOP LDO regulators" + depends on ARCH_MX6 + default y if ARCH_MX6 + help + Say y here to support ANATOP LDOs regulators. + endif diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 93a6318..990c332 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -46,5 +46,6 @@ obj-$(CONFIG_REGULATOR_AB8500) += ab8500.o obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o +obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c new file mode 100644 index 0000000..61ad1c2 --- /dev/null +++ b/drivers/regulator/anatop-regulator.c @@ -0,0 +1,236 @@ +/* + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +static int anatop_set_voltage(struct regulator_dev *reg, int min_uV, + int max_uV, unsigned *selector) +{ + struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg); + + if (anatop_reg->rdata->set_voltage) + return anatop_reg->rdata->set_voltage(anatop_reg, max_uV); + else + return -ENOTSUPP; +} + +static int anatop_get_voltage(struct regulator_dev *reg) +{ + struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg); + + if (anatop_reg->rdata->get_voltage) + return anatop_reg->rdata->get_voltage(anatop_reg); + else + return -ENOTSUPP; +} + +static int anatop_enable(struct regulator_dev *reg) +{ + struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg); + + return anatop_reg->rdata->enable(anatop_reg); +} + +static int anatop_disable(struct regulator_dev *reg) +{ + struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg); + + return anatop_reg->rdata->disable(anatop_reg); +} + +static int anatop_is_enabled(struct regulator_dev *reg) +{ + struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg); + + return anatop_reg->rdata->is_enabled(anatop_reg); +} + +static struct regulator_ops anatop_rops = { + .set_voltage = anatop_set_voltage, + .get_voltage = anatop_get_voltage, + .enable = anatop_enable, + .disable = anatop_disable, + .is_enabled = anatop_is_enabled, +}; + +static struct regulator_desc anatop_reg_desc[] = { + { + .name = "vddpu", + .id = ANATOP_VDDPU, + .ops = &anatop_rops, + .irq = 0, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE + }, + { + .name = "vddcore", + .id = ANATOP_VDDCORE, + .ops = &anatop_rops, + .irq = 0, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE + }, + { + .name = "vddsoc", + .id = ANATOP_VDDSOC, + .ops = &anatop_rops, + .irq = 0, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE + }, + { + .name = "vdd2p5", + .id = ANATOP_VDD2P5, + .ops = &anatop_rops, + .irq = 0, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE + }, + { + .name = "vdd1p1", + .id = ANATOP_VDD1P1, + .ops = &anatop_rops, + .irq = 0, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE + }, + { + .name = "vdd3p0", + .id = ANATOP_VDD3P0, + .ops = &anatop_rops, + .irq = 0, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE + }, +}; + +int anatop_regulator_probe(struct platform_device *pdev) +{ + struct regulator_desc *rdesc; + struct regulator_dev *rdev; + struct anatop_regulator *sreg; + struct regulator_init_data *initdata; + + sreg = platform_get_drvdata(pdev); + initdata = pdev->dev.platform_data; + sreg->cur_current = 0; + sreg->next_current = 0; + sreg->cur_voltage = 0; + + init_waitqueue_head(&sreg->wait_q); + spin_lock_init(&sreg->lock); + + if (pdev->id > ANATOP_SUPPLY_NUM) { + rdesc = kzalloc(sizeof(struct regulator_desc), GFP_KERNEL); + memcpy(rdesc, &anatop_reg_desc[ANATOP_SUPPLY_NUM], + sizeof(struct regulator_desc)); + rdesc->name = kstrdup(sreg->rdata->name, GFP_KERNEL); + } else + rdesc = &anatop_reg_desc[pdev->id]; + + pr_debug("probing regulator %s %s %d\n", + sreg->rdata->name, + rdesc->name, + pdev->id); + + /* register regulator */ + rdev = regulator_register(rdesc, &pdev->dev, + initdata, sreg); + + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, "failed to register %s\n", + rdesc->name); + return PTR_ERR(rdev); + } + + return 0; +} + + +int anatop_regulator_remove(struct platform_device *pdev) +{ + struct regulator_dev *rdev = platform_get_drvdata(pdev); + + regulator_unregister(rdev); + + return 0; + +} + +int anatop_register_regulator( + struct anatop_regulator *reg_data, int reg, + struct regulator_init_data *initdata) +{ + struct platform_device *pdev; + int ret; + + pdev = platform_device_alloc("anatop_reg", reg); + if (!pdev) + return -ENOMEM; + + pdev->dev.platform_data = initdata; + + platform_set_drvdata(pdev, reg_data); + ret = platform_device_add(pdev); + + if (ret != 0) { + pr_debug("Failed to register regulator %d: %d\n", + reg, ret); + platform_device_del(pdev); + } + pr_debug("register regulator %s, %d: %d\n", + reg_data->rdata->name, reg, ret); + + return ret; +} +EXPORT_SYMBOL_GPL(anatop_register_regulator); + +struct platform_driver anatop_reg = { + .driver = { + .name = "anatop_reg", + }, + .probe = anatop_regulator_probe, + .remove = anatop_regulator_remove, +}; + +int anatop_regulator_init(void) +{ + return platform_driver_register(&anatop_reg); +} + +void anatop_regulator_exit(void) +{ + platform_driver_unregister(&anatop_reg); +} + +postcore_initcall(anatop_regulator_init); +module_exit(anatop_regulator_exit); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("ANATOP Regulator driver"); +MODULE_LICENSE("GPL"); + diff --git a/include/linux/regulator/anatop-regulator.h b/include/linux/regulator/anatop-regulator.h new file mode 100644 index 0000000..a1d98ed --- /dev/null +++ b/include/linux/regulator/anatop-regulator.h @@ -0,0 +1,82 @@ +/* + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef __ANATOP_REGULATOR_H +#define __ANATOP_REGULATOR_H +#include + +/* regulator supplies for Anatop */ +enum anatop_regulator_supplies { + ANATOP_VDDPU, + ANATOP_VDDCORE, + ANATOP_VDDSOC, + ANATOP_VDD2P5, + ANATOP_VDD1P1, + ANATOP_VDD3P0, + ANATOP_SUPPLY_NUM +}; + +struct anatop_regulator { + struct regulator_desc regulator; + struct anatop_regulator *parent; + struct anatop_regulator_data *rdata; + struct completion done; + + spinlock_t lock; + wait_queue_head_t wait_q; + struct notifier_block nb; + + int mode; + int cur_voltage; + int cur_current; + int next_current; +}; + + +struct anatop_regulator_data { + char name[80]; + char *parent_name; + int (*reg_register)(struct anatop_regulator *sreg); + int (*set_voltage)(struct anatop_regulator *sreg, int uv); + int (*get_voltage)(struct anatop_regulator *sreg); + int (*set_current)(struct anatop_regulator *sreg, int uA); + int (*get_current)(struct anatop_regulator *sreg); + int (*enable)(struct anatop_regulator *sreg); + int (*disable)(struct anatop_regulator *sreg); + int (*is_enabled)(struct anatop_regulator *sreg); + int (*set_mode)(struct anatop_regulator *sreg, int mode); + int (*get_mode)(struct anatop_regulator *sreg); + int (*get_optimum_mode)(struct anatop_regulator *sreg, + int input_uV, int output_uV, int load_uA); + u32 control_reg; + int vol_bit_shift; + int vol_bit_mask; + int min_bit_val; + int min_voltage; + int max_voltage; + int max_current; + struct regulation_constraints *cnstraints; +}; + +int anatop_register_regulator( + struct anatop_regulator *reg_data, int reg, + struct regulator_init_data *initdata); + +#endif /* __ANATOP_REGULATOR_H */