mfd: hi655x: Add MFD driver for hi655x
Add PMIC MFD driver to support hisilicon hi665x. Signed-off-by: Chen Feng <puck.chen@hisilicon.com> Signed-off-by: Fei Wang <w.f@huawei.com> Signed-off-by: Xinwei Kong <kong.kongxinwei@hisilicon.com> Reviewed-by: Haojian Zhuang <haojian.zhuang@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Chen Feng
Lee Jones
parent
68b21094ef
commit
b52207ef4e
|
|
@ -319,6 +319,16 @@ 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 ARCH_HISI || COMPILE_TEST
|
||||
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
|
||||
|
|
|
|||
|
|
@ -196,6 +196,7 @@ 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
|
||||
|
|
|
|||
|
|
@ -0,0 +1,162 @@
|
|||
/*
|
||||
* Device driver for MFD hi655x PMIC
|
||||
*
|
||||
* Copyright (c) 2016 Hisilicon.
|
||||
*
|
||||
* Authors:
|
||||
* Chen Feng <puck.chen@hisilicon.com>
|
||||
* Fei Wang <w.f@huawei.com>
|
||||
*
|
||||
* 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 <linux/gpio.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/mfd/core.h>
|
||||
#include <linux/mfd/hi655x-pmic.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of_gpio.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/regmap.h>
|
||||
|
||||
static const struct mfd_cell hi655x_pmic_devs[] = {
|
||||
{ .name = "hi655x-regulator", },
|
||||
};
|
||||
|
||||
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 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)
|
||||
{
|
||||
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 *dev = &pdev->dev;
|
||||
struct device_node *np = dev->of_node;
|
||||
void __iomem *base;
|
||||
|
||||
pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
|
||||
if (!pmic)
|
||||
return -ENOMEM;
|
||||
pmic->dev = dev;
|
||||
|
||||
pmic->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!pmic->res)
|
||||
return -ENOENT;
|
||||
|
||||
base = devm_ioremap_resource(dev, pmic->res);
|
||||
if (!base)
|
||||
return -ENOMEM;
|
||||
|
||||
pmic->regmap = devm_regmap_init_mmio_clk(dev, NULL, base,
|
||||
&hi655x_regmap_config);
|
||||
|
||||
regmap_read(pmic->regmap, HI655X_BUS_ADDR(HI655X_VER_REG), &pmic->ver);
|
||||
if ((pmic->ver < PMU_VER_START) || (pmic->ver > PMU_VER_END)) {
|
||||
dev_warn(dev, "PMU version %d unsupported\n", pmic->ver);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
hi655x_local_irq_clear(pmic->regmap);
|
||||
|
||||
pmic->gpio = of_get_named_gpio(np, "pmic-gpios", 0);
|
||||
if (!gpio_is_valid(pmic->gpio)) {
|
||||
dev_err(dev, "Failed to get the pmic-gpios\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ret = devm_gpio_request_one(dev, 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;
|
||||
}
|
||||
|
||||
ret = regmap_add_irq_chip(pmic->regmap, gpio_to_irq(pmic->gpio),
|
||||
IRQF_TRIGGER_LOW | IRQF_NO_SUSPEND, 0,
|
||||
&hi655x_irq_chip, &pmic->irq_data);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to obtain 'hi655x_pmic_irq' %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, pmic);
|
||||
|
||||
ret = mfd_add_devices(dev, PLATFORM_DEVID_AUTO, hi655x_pmic_devs,
|
||||
ARRAY_SIZE(hi655x_pmic_devs), NULL, 0, NULL);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to register device %d\n", ret);
|
||||
regmap_del_irq_chip(gpio_to_irq(pmic->gpio), pmic->irq_data);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hi655x_pmic_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct hi655x_pmic *pmic = platform_get_drvdata(pdev);
|
||||
|
||||
regmap_del_irq_chip(gpio_to_irq(pmic->gpio), pmic->irq_data);
|
||||
mfd_remove_devices(&pdev->dev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id hi655x_pmic_match[] = {
|
||||
{ .compatible = "hisilicon,hi655x-pmic", },
|
||||
{},
|
||||
};
|
||||
|
||||
static struct platform_driver hi655x_pmic_driver = {
|
||||
.driver = {
|
||||
.name = "hi655x-pmic",
|
||||
.of_match_table = of_match_ptr(hi655x_pmic_match),
|
||||
},
|
||||
.probe = hi655x_pmic_probe,
|
||||
.remove = hi655x_pmic_remove,
|
||||
};
|
||||
module_platform_driver(hi655x_pmic_driver);
|
||||
|
||||
MODULE_AUTHOR("Chen Feng <puck.chen@hisilicon.com>");
|
||||
MODULE_DESCRIPTION("Hisilicon hi655x PMIC driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -0,0 +1,55 @@
|
|||
/*
|
||||
* Device driver for regulators in hi655x IC
|
||||
*
|
||||
* Copyright (c) 2016 Hisilicon.
|
||||
*
|
||||
* Authors:
|
||||
* Chen Feng <puck.chen@hisilicon.com>
|
||||
* Fei Wang <w.f@huawei.com>
|
||||
*
|
||||
* 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;
|
||||
int gpio;
|
||||
unsigned int ver;
|
||||
struct regmap_irq_chip_data *irq_data;
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue