From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933326AbbLOM6O (ORCPT ); Tue, 15 Dec 2015 07:58:14 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:41626 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932095AbbLOM6M (ORCPT ); Tue, 15 Dec 2015 07:58:12 -0500 From: Chen Feng To: , , , , , , , , , , , , , , , , , , , CC: , , , Subject: [PATCH v3 3/5] mfd: hi655x: Add hi665x pmic driver Date: Tue, 15 Dec 2015 20:54:14 +0800 Message-ID: <1450184056-79851-4-git-send-email-puck.chen@hisilicon.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1450184056-79851-1-git-send-email-puck.chen@hisilicon.com> References: <1450184056-79851-1-git-send-email-puck.chen@hisilicon.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.184.163.62] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020205.56700D88.0181,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 632638d681e0323d5670e8dcaffb4733 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add mfd driver to support hisilicon hi665x PMIC. Signed-off-by: Chen Feng Signed-off-by: Fei Wang Tested-by: Xinwei Kong --- drivers/mfd/Kconfig | 9 +++ drivers/mfd/Makefile | 1 + drivers/mfd/hi655x-pmic.c | 170 ++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/hi655x-pmic.h | 56 +++++++++++++ 4 files changed, 236 insertions(+) create mode 100644 drivers/mfd/hi655x-pmic.c create mode 100644 include/linux/mfd/hi655x-pmic.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 4d92df6..cb70b53 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -284,6 +284,15 @@ config MFD_HI6421_PMIC menus in order to enable them. We communicate with the Hi6421 via memory-mapped I/O. +config MFD_HI655X_PMIC + tristate "HiSilicon Hi655X series PMU/Codec IC" + depends on OF + select MFD_CORE + select REGMAP_MMIO + select REGMAP_IRQ + help + Select this option to enable Hisilicon hi655x series pmic driver. + config HTC_EGPIO bool "HTC EGPIO support" depends on GPIOLIB && ARM diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index a8b76b8..6a7b0e1 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -186,6 +186,7 @@ obj-$(CONFIG_MFD_STW481X) += stw481x.o obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o +obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o obj-$(CONFIG_MFD_DLN2) += dln2.o obj-$(CONFIG_MFD_RT5033) += rt5033.o obj-$(CONFIG_MFD_SKY81452) += sky81452.o diff --git a/drivers/mfd/hi655x-pmic.c b/drivers/mfd/hi655x-pmic.c new file mode 100644 index 0000000..2ee455e --- /dev/null +++ b/drivers/mfd/hi655x-pmic.c @@ -0,0 +1,170 @@ +/* + * Device driver for PMIC DRIVER in HI655X IC + * + * Copyright (c) 2015 Hisilicon Co. Ltd + * + * Chen Feng + * Fei Wang + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +static const struct of_device_id of_hi655x_pmic_child_match_tbl[] = { + { .compatible = "hisilicon,hi655x-regulator-pmic", }, + {}, +}; + +static const struct of_device_id of_hi655x_pmic_match_tbl[] = { + { .compatible = "hisilicon,hi655x-pmic", }, + {}, +}; + +static const struct regmap_irq hi655x_irqs[] = { + { .reg_offset = 0, .mask = OTMP_D1R_INT }, + { .reg_offset = 0, .mask = VSYS_2P5_R_INT }, + { .reg_offset = 0, .mask = VSYS_UV_D3R_INT }, + { .reg_offset = 0, .mask = VSYS_6P0_D200UR_INT }, + { .reg_offset = 0, .mask = PWRON_D4SR_INT }, + { .reg_offset = 0, .mask = PWRON_D20F_INT }, + { .reg_offset = 0, .mask = PWRON_D20R_INT }, + { .reg_offset = 0, .mask = RESERVE_INT }, +}; + +static const struct regmap_irq_chip hi655x_irq_chip = { + .name = "hi655x-pmic", + .irqs = hi655x_irqs, + .num_regs = 1, + .num_irqs = ARRAY_SIZE(hi655x_irqs), + .status_base = HI655X_IRQ_STAT_BASE, + .mask_base = HI655X_IRQ_MASK_BASE, +}; + +static unsigned int hi655x_pmic_get_version(struct hi655x_pmic *pmic) +{ + u32 val; + + regmap_read(pmic->regmap, + HI655X_BUS_ADDR(HI655X_VER_REG), &val); + + return val; +} + +static struct regmap_config hi655x_regmap_config = { + .reg_bits = 32, + .reg_stride = HI655X_STRIDE, + .val_bits = 8, + .max_register = HI655X_BUS_ADDR(0xFFF), +}; + +static void hi655x_local_irq_clear(struct regmap *map) +{ + unsigned int i; + + regmap_write(map, HI655X_ANA_IRQM_BASE, HI655X_IRQ_CLR); + for (i = 0; i < HI655X_IRQ_ARRAY; i++) { + regmap_write(map, HI655X_IRQ_STAT_BASE + i * HI655X_STRIDE, + HI655X_IRQ_CLR); + } +} + +static int hi655x_pmic_probe(struct platform_device *pdev) +{ + int ret; + struct hi655x_pmic *pmic; + struct device_node *gpio_np; + + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + void __iomem *base; + + pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); + pmic->dev = dev; + + pmic->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!pmic->res) { + dev_err(dev, "platform_get_resource err\n"); + return -ENOENT; + } + base = devm_ioremap_resource(&pdev->dev, pmic->res); + if (!base) { + dev_err(dev, "cannot map register memory\n"); + return -ENOMEM; + } + pmic->regmap = devm_regmap_init_mmio_clk(dev, NULL, base, + &hi655x_regmap_config); + + pmic->ver = hi655x_pmic_get_version(pmic); + if ((pmic->ver < PMU_VER_START) || (pmic->ver > PMU_VER_END)) { + dev_warn(dev, "it is wrong pmu version\n"); + return -EINVAL; + } + + hi655x_local_irq_clear(pmic->regmap); + + gpio_np = of_parse_phandle(np, "pmic-gpios", 0); + if (!gpio_np) { + dev_err(dev, "can't parse property\n"); + ret = -EPROBE_DEFER; + return ret; + } + + ret = gpio_request_one(pmic->gpio, GPIOF_IN, "hi655x_pmic_irq"); + if (ret < 0) { + dev_err(dev, "failed to request gpio %d ret = %d\n", + pmic->gpio, ret); + return ret; + } + pmic->irq = gpio_to_irq(pmic->gpio); + + ret = regmap_add_irq_chip(pmic->regmap, pmic->irq, + IRQF_TRIGGER_LOW | IRQF_NO_SUSPEND, 0, + &hi655x_irq_chip, &pmic->irq_data); + if (ret) { + gpio_free(pmic->gpio); + return ret; + } + + platform_set_drvdata(pdev, pmic); + + /** + * populate sub nodes + */ + ret = of_platform_populate(np, of_hi655x_pmic_child_match_tbl, + NULL, dev); + if (ret) { + gpio_free(pmic->gpio); + regmap_del_irq_chip(pmic->irq, pmic->irq_data); + return ret; + } + + return 0; +} + +static struct platform_driver hi655x_pmic_driver = { + .driver = { + .name = "hi655x-pmic", + .owner = THIS_MODULE, + .of_match_table = of_hi655x_pmic_match_tbl, + }, + .probe = hi655x_pmic_probe, +}; +module_platform_driver(hi655x_pmic_driver); + +MODULE_AUTHOR("Chen Feng "); +MODULE_DESCRIPTION("Hisilicon hi655x pmic driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/hi655x-pmic.h b/include/linux/mfd/hi655x-pmic.h new file mode 100644 index 0000000..9b677f92 --- /dev/null +++ b/include/linux/mfd/hi655x-pmic.h @@ -0,0 +1,56 @@ +/* + * Header file for device driver Hi655X PMIC + * + * Copyright (C) 2015 Hisilicon Co. Ltd. + * + * Chen Feng + * Fei Wang + * + * 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. + */ + +#ifndef __HI655X_PMIC_H +#define __HI655X_PMIC_H + +/* Hi655x registers are mapped to memory bus in 4 bytes stride */ +#define HI655X_STRIDE (4) +#define HI655X_BUS_ADDR(x) ((x) << 2) + +#define HI655X_BITS (8) + +#define HI655X_NR_IRQ (32) + +#define HI655X_IRQ_STAT_BASE (0x003 << 2) +#define HI655X_IRQ_MASK_BASE (0x007 << 2) +#define HI655X_ANA_IRQM_BASE (0x1b5 << 2) +#define HI655X_IRQ_ARRAY (4) +#define HI655X_IRQ_MASK (0xFF) +#define HI655X_IRQ_CLR (0xFF) +#define HI655X_VER_REG (0x00) + +#define PMU_VER_START (0x10) +#define PMU_VER_END (0x38) + +#define RESERVE_INT (BIT(7)) +#define PWRON_D20R_INT (BIT(6)) +#define PWRON_D20F_INT (BIT(5)) +#define PWRON_D4SR_INT (BIT(4)) +#define VSYS_6P0_D200UR_INT (BIT(3)) +#define VSYS_UV_D3R_INT (BIT(2)) +#define VSYS_2P5_R_INT (BIT(1)) +#define OTMP_D1R_INT (BIT(0)) + +struct hi655x_pmic { + struct resource *res; + struct device *dev; + struct regmap *regmap; + struct clk *clk; + int irq; + int gpio; + unsigned int ver; + struct regmap_irq_chip_data *irq_data; +}; + +#endif -- 1.9.1