mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
2b91c28f2a
This adds support for the MediaTek MT6358 PMIC. This is a multifunction device with the following sub modules: - Regulator - RTC - Codec - Interrupt It is interfaced to the host controller using SPI interface by a proprietary hardware called PMIC wrapper or pwrap. MT6358 MFD is a child device of the pwrap. Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
250 lines
5.9 KiB
C
250 lines
5.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (c) 2014 MediaTek Inc.
|
|
* Author: Flora Fu, MediaTek
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/mt6323/core.h>
|
|
#include <linux/mfd/mt6358/core.h>
|
|
#include <linux/mfd/mt6397/core.h>
|
|
#include <linux/mfd/mt6323/registers.h>
|
|
#include <linux/mfd/mt6358/registers.h>
|
|
#include <linux/mfd/mt6397/registers.h>
|
|
|
|
#define MT6323_RTC_BASE 0x8000
|
|
#define MT6323_RTC_SIZE 0x40
|
|
|
|
#define MT6358_RTC_BASE 0x0588
|
|
#define MT6358_RTC_SIZE 0x3c
|
|
|
|
#define MT6397_RTC_BASE 0xe000
|
|
#define MT6397_RTC_SIZE 0x3e
|
|
|
|
#define MT6323_PWRC_BASE 0x8000
|
|
#define MT6323_PWRC_SIZE 0x40
|
|
|
|
static const struct resource mt6323_rtc_resources[] = {
|
|
DEFINE_RES_MEM(MT6323_RTC_BASE, MT6323_RTC_SIZE),
|
|
DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
|
|
};
|
|
|
|
static const struct resource mt6358_rtc_resources[] = {
|
|
DEFINE_RES_MEM(MT6358_RTC_BASE, MT6358_RTC_SIZE),
|
|
DEFINE_RES_IRQ(MT6358_IRQ_RTC),
|
|
};
|
|
|
|
static const struct resource mt6397_rtc_resources[] = {
|
|
DEFINE_RES_MEM(MT6397_RTC_BASE, MT6397_RTC_SIZE),
|
|
DEFINE_RES_IRQ(MT6397_IRQ_RTC),
|
|
};
|
|
|
|
static const struct resource mt6323_keys_resources[] = {
|
|
DEFINE_RES_IRQ(MT6323_IRQ_STATUS_PWRKEY),
|
|
DEFINE_RES_IRQ(MT6323_IRQ_STATUS_FCHRKEY),
|
|
};
|
|
|
|
static const struct resource mt6397_keys_resources[] = {
|
|
DEFINE_RES_IRQ(MT6397_IRQ_PWRKEY),
|
|
DEFINE_RES_IRQ(MT6397_IRQ_HOMEKEY),
|
|
};
|
|
|
|
static const struct resource mt6323_pwrc_resources[] = {
|
|
DEFINE_RES_MEM(MT6323_PWRC_BASE, MT6323_PWRC_SIZE),
|
|
};
|
|
|
|
static const struct mfd_cell mt6323_devs[] = {
|
|
{
|
|
.name = "mt6323-rtc",
|
|
.num_resources = ARRAY_SIZE(mt6323_rtc_resources),
|
|
.resources = mt6323_rtc_resources,
|
|
.of_compatible = "mediatek,mt6323-rtc",
|
|
}, {
|
|
.name = "mt6323-regulator",
|
|
.of_compatible = "mediatek,mt6323-regulator"
|
|
}, {
|
|
.name = "mt6323-led",
|
|
.of_compatible = "mediatek,mt6323-led"
|
|
}, {
|
|
.name = "mtk-pmic-keys",
|
|
.num_resources = ARRAY_SIZE(mt6323_keys_resources),
|
|
.resources = mt6323_keys_resources,
|
|
.of_compatible = "mediatek,mt6323-keys"
|
|
}, {
|
|
.name = "mt6323-pwrc",
|
|
.num_resources = ARRAY_SIZE(mt6323_pwrc_resources),
|
|
.resources = mt6323_pwrc_resources,
|
|
.of_compatible = "mediatek,mt6323-pwrc"
|
|
},
|
|
};
|
|
|
|
static const struct mfd_cell mt6358_devs[] = {
|
|
{
|
|
.name = "mt6358-regulator",
|
|
.of_compatible = "mediatek,mt6358-regulator"
|
|
}, {
|
|
.name = "mt6358-rtc",
|
|
.num_resources = ARRAY_SIZE(mt6358_rtc_resources),
|
|
.resources = mt6358_rtc_resources,
|
|
.of_compatible = "mediatek,mt6358-rtc",
|
|
}, {
|
|
.name = "mt6358-sound",
|
|
.of_compatible = "mediatek,mt6358-sound"
|
|
},
|
|
};
|
|
|
|
static const struct mfd_cell mt6397_devs[] = {
|
|
{
|
|
.name = "mt6397-rtc",
|
|
.num_resources = ARRAY_SIZE(mt6397_rtc_resources),
|
|
.resources = mt6397_rtc_resources,
|
|
.of_compatible = "mediatek,mt6397-rtc",
|
|
}, {
|
|
.name = "mt6397-regulator",
|
|
.of_compatible = "mediatek,mt6397-regulator",
|
|
}, {
|
|
.name = "mt6397-codec",
|
|
.of_compatible = "mediatek,mt6397-codec",
|
|
}, {
|
|
.name = "mt6397-clk",
|
|
.of_compatible = "mediatek,mt6397-clk",
|
|
}, {
|
|
.name = "mt6397-pinctrl",
|
|
.of_compatible = "mediatek,mt6397-pinctrl",
|
|
}, {
|
|
.name = "mtk-pmic-keys",
|
|
.num_resources = ARRAY_SIZE(mt6397_keys_resources),
|
|
.resources = mt6397_keys_resources,
|
|
.of_compatible = "mediatek,mt6397-keys"
|
|
}
|
|
};
|
|
|
|
struct chip_data {
|
|
u32 cid_addr;
|
|
u32 cid_shift;
|
|
const struct mfd_cell *cells;
|
|
int cell_size;
|
|
int (*irq_init)(struct mt6397_chip *chip);
|
|
};
|
|
|
|
static const struct chip_data mt6323_core = {
|
|
.cid_addr = MT6323_CID,
|
|
.cid_shift = 0,
|
|
.cells = mt6323_devs,
|
|
.cell_size = ARRAY_SIZE(mt6323_devs),
|
|
.irq_init = mt6397_irq_init,
|
|
};
|
|
|
|
static const struct chip_data mt6358_core = {
|
|
.cid_addr = MT6358_SWCID,
|
|
.cid_shift = 8,
|
|
.cells = mt6358_devs,
|
|
.cell_size = ARRAY_SIZE(mt6358_devs),
|
|
.irq_init = mt6358_irq_init,
|
|
};
|
|
|
|
static const struct chip_data mt6397_core = {
|
|
.cid_addr = MT6397_CID,
|
|
.cid_shift = 0,
|
|
.cells = mt6397_devs,
|
|
.cell_size = ARRAY_SIZE(mt6397_devs),
|
|
.irq_init = mt6397_irq_init,
|
|
};
|
|
|
|
static int mt6397_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
unsigned int id = 0;
|
|
struct mt6397_chip *pmic;
|
|
const struct chip_data *pmic_core;
|
|
|
|
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
|
|
if (!pmic)
|
|
return -ENOMEM;
|
|
|
|
pmic->dev = &pdev->dev;
|
|
|
|
/*
|
|
* mt6397 MFD is child device of soc pmic wrapper.
|
|
* Regmap is set from its parent.
|
|
*/
|
|
pmic->regmap = dev_get_regmap(pdev->dev.parent, NULL);
|
|
if (!pmic->regmap)
|
|
return -ENODEV;
|
|
|
|
pmic_core = of_device_get_match_data(&pdev->dev);
|
|
if (!pmic_core)
|
|
return -ENODEV;
|
|
|
|
ret = regmap_read(pmic->regmap, pmic_core->cid_addr, &id);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Failed to read chip id: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
pmic->chip_id = (id >> pmic_core->cid_shift) & 0xff;
|
|
|
|
platform_set_drvdata(pdev, pmic);
|
|
|
|
pmic->irq = platform_get_irq(pdev, 0);
|
|
if (pmic->irq <= 0)
|
|
return pmic->irq;
|
|
|
|
ret = pmic_core->irq_init(pmic);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
|
|
pmic_core->cells, pmic_core->cell_size,
|
|
NULL, 0, pmic->irq_domain);
|
|
if (ret) {
|
|
irq_domain_remove(pmic->irq_domain);
|
|
dev_err(&pdev->dev, "failed to add child devices: %d\n", ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct of_device_id mt6397_of_match[] = {
|
|
{
|
|
.compatible = "mediatek,mt6323",
|
|
.data = &mt6323_core,
|
|
}, {
|
|
.compatible = "mediatek,mt6358",
|
|
.data = &mt6358_core,
|
|
}, {
|
|
.compatible = "mediatek,mt6397",
|
|
.data = &mt6397_core,
|
|
}, {
|
|
/* sentinel */
|
|
}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mt6397_of_match);
|
|
|
|
static const struct platform_device_id mt6397_id[] = {
|
|
{ "mt6397", 0 },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, mt6397_id);
|
|
|
|
static struct platform_driver mt6397_driver = {
|
|
.probe = mt6397_probe,
|
|
.driver = {
|
|
.name = "mt6397",
|
|
.of_match_table = of_match_ptr(mt6397_of_match),
|
|
},
|
|
.id_table = mt6397_id,
|
|
};
|
|
|
|
module_platform_driver(mt6397_driver);
|
|
|
|
MODULE_AUTHOR("Flora Fu, MediaTek");
|
|
MODULE_DESCRIPTION("Driver for MediaTek MT6397 PMIC");
|
|
MODULE_LICENSE("GPL");
|