286 lines
7.0 KiB
C
286 lines
7.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2014 MediaTek Inc.
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* Author: Flora Fu, MediaTek
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*/
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of_irq.h>
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#include <linux/regmap.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/mt6323/core.h>
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#include <linux/mfd/mt6358/core.h>
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#include <linux/mfd/mt6359/core.h>
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#include <linux/mfd/mt6397/core.h>
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#include <linux/mfd/mt6323/registers.h>
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#include <linux/mfd/mt6358/registers.h>
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#include <linux/mfd/mt6359/registers.h>
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#include <linux/mfd/mt6397/registers.h>
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#define MT6323_RTC_BASE 0x8000
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#define MT6323_RTC_SIZE 0x40
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#define MT6358_RTC_BASE 0x0588
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#define MT6358_RTC_SIZE 0x3c
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#define MT6397_RTC_BASE 0xe000
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#define MT6397_RTC_SIZE 0x3e
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#define MT6323_PWRC_BASE 0x8000
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#define MT6323_PWRC_SIZE 0x40
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static const struct resource mt6323_rtc_resources[] = {
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DEFINE_RES_MEM(MT6323_RTC_BASE, MT6323_RTC_SIZE),
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DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
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};
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static const struct resource mt6358_rtc_resources[] = {
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DEFINE_RES_MEM(MT6358_RTC_BASE, MT6358_RTC_SIZE),
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DEFINE_RES_IRQ(MT6358_IRQ_RTC),
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};
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static const struct resource mt6397_rtc_resources[] = {
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DEFINE_RES_MEM(MT6397_RTC_BASE, MT6397_RTC_SIZE),
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DEFINE_RES_IRQ(MT6397_IRQ_RTC),
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};
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static const struct resource mt6358_keys_resources[] = {
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DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY, "powerkey"),
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DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY, "homekey"),
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DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY_R, "powerkey_r"),
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DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY_R, "homekey_r"),
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};
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static const struct resource mt6323_keys_resources[] = {
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DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_PWRKEY, "powerkey"),
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DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_FCHRKEY, "homekey"),
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};
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static const struct resource mt6397_keys_resources[] = {
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DEFINE_RES_IRQ_NAMED(MT6397_IRQ_PWRKEY, "powerkey"),
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DEFINE_RES_IRQ_NAMED(MT6397_IRQ_HOMEKEY, "homekey"),
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};
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static const struct resource mt6323_pwrc_resources[] = {
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DEFINE_RES_MEM(MT6323_PWRC_BASE, MT6323_PWRC_SIZE),
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};
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static const struct mfd_cell mt6323_devs[] = {
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{
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.name = "mt6323-rtc",
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.num_resources = ARRAY_SIZE(mt6323_rtc_resources),
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.resources = mt6323_rtc_resources,
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.of_compatible = "mediatek,mt6323-rtc",
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}, {
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.name = "mt6323-regulator",
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.of_compatible = "mediatek,mt6323-regulator"
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}, {
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.name = "mt6323-led",
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.of_compatible = "mediatek,mt6323-led"
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}, {
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.name = "mtk-pmic-keys",
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.num_resources = ARRAY_SIZE(mt6323_keys_resources),
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.resources = mt6323_keys_resources,
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.of_compatible = "mediatek,mt6323-keys"
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}, {
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.name = "mt6323-pwrc",
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.num_resources = ARRAY_SIZE(mt6323_pwrc_resources),
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.resources = mt6323_pwrc_resources,
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.of_compatible = "mediatek,mt6323-pwrc"
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},
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};
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static const struct mfd_cell mt6358_devs[] = {
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{
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.name = "mt6358-regulator",
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.of_compatible = "mediatek,mt6358-regulator"
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}, {
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.name = "mt6358-rtc",
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.num_resources = ARRAY_SIZE(mt6358_rtc_resources),
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.resources = mt6358_rtc_resources,
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.of_compatible = "mediatek,mt6358-rtc",
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}, {
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.name = "mt6358-sound",
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.of_compatible = "mediatek,mt6358-sound"
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}, {
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.name = "mt6358-keys",
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.num_resources = ARRAY_SIZE(mt6358_keys_resources),
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.resources = mt6358_keys_resources,
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.of_compatible = "mediatek,mt6358-keys"
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},
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};
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static const struct mfd_cell mt6359_devs[] = {
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{ .name = "mt6359-regulator", },
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{
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.name = "mt6359-rtc",
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.num_resources = ARRAY_SIZE(mt6358_rtc_resources),
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.resources = mt6358_rtc_resources,
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.of_compatible = "mediatek,mt6358-rtc",
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},
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{ .name = "mt6359-sound", },
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};
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static const struct mfd_cell mt6397_devs[] = {
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{
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.name = "mt6397-rtc",
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.num_resources = ARRAY_SIZE(mt6397_rtc_resources),
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.resources = mt6397_rtc_resources,
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.of_compatible = "mediatek,mt6397-rtc",
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}, {
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.name = "mt6397-regulator",
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.of_compatible = "mediatek,mt6397-regulator",
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}, {
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.name = "mt6397-codec",
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.of_compatible = "mediatek,mt6397-codec",
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}, {
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.name = "mt6397-clk",
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.of_compatible = "mediatek,mt6397-clk",
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}, {
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.name = "mt6397-pinctrl",
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.of_compatible = "mediatek,mt6397-pinctrl",
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}, {
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.name = "mtk-pmic-keys",
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.num_resources = ARRAY_SIZE(mt6397_keys_resources),
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.resources = mt6397_keys_resources,
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.of_compatible = "mediatek,mt6397-keys"
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}
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};
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struct chip_data {
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u32 cid_addr;
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u32 cid_shift;
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const struct mfd_cell *cells;
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int cell_size;
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int (*irq_init)(struct mt6397_chip *chip);
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};
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static const struct chip_data mt6323_core = {
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.cid_addr = MT6323_CID,
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.cid_shift = 0,
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.cells = mt6323_devs,
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.cell_size = ARRAY_SIZE(mt6323_devs),
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.irq_init = mt6397_irq_init,
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};
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static const struct chip_data mt6358_core = {
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.cid_addr = MT6358_SWCID,
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.cid_shift = 8,
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.cells = mt6358_devs,
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.cell_size = ARRAY_SIZE(mt6358_devs),
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.irq_init = mt6358_irq_init,
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};
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static const struct chip_data mt6359_core = {
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.cid_addr = MT6359_SWCID,
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.cid_shift = 8,
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.cells = mt6359_devs,
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.cell_size = ARRAY_SIZE(mt6359_devs),
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.irq_init = mt6358_irq_init,
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};
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static const struct chip_data mt6397_core = {
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.cid_addr = MT6397_CID,
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.cid_shift = 0,
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.cells = mt6397_devs,
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.cell_size = ARRAY_SIZE(mt6397_devs),
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.irq_init = mt6397_irq_init,
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};
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static int mt6397_probe(struct platform_device *pdev)
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{
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int ret;
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unsigned int id = 0;
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struct mt6397_chip *pmic;
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const struct chip_data *pmic_core;
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pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
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if (!pmic)
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return -ENOMEM;
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pmic->dev = &pdev->dev;
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/*
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* mt6397 MFD is child device of soc pmic wrapper.
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* Regmap is set from its parent.
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*/
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pmic->regmap = dev_get_regmap(pdev->dev.parent, NULL);
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if (!pmic->regmap)
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return -ENODEV;
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pmic_core = of_device_get_match_data(&pdev->dev);
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if (!pmic_core)
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return -ENODEV;
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ret = regmap_read(pmic->regmap, pmic_core->cid_addr, &id);
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if (ret) {
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dev_err(&pdev->dev, "Failed to read chip id: %d\n", ret);
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return ret;
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}
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pmic->chip_id = (id >> pmic_core->cid_shift) & 0xff;
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platform_set_drvdata(pdev, pmic);
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pmic->irq = platform_get_irq(pdev, 0);
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if (pmic->irq <= 0)
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return pmic->irq;
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ret = pmic_core->irq_init(pmic);
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if (ret)
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return ret;
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ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
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pmic_core->cells, pmic_core->cell_size,
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NULL, 0, pmic->irq_domain);
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if (ret) {
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irq_domain_remove(pmic->irq_domain);
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dev_err(&pdev->dev, "failed to add child devices: %d\n", ret);
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}
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return ret;
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}
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static const struct of_device_id mt6397_of_match[] = {
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{
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.compatible = "mediatek,mt6323",
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.data = &mt6323_core,
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}, {
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.compatible = "mediatek,mt6358",
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.data = &mt6358_core,
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}, {
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.compatible = "mediatek,mt6359",
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.data = &mt6359_core,
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}, {
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.compatible = "mediatek,mt6397",
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.data = &mt6397_core,
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}, {
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/* sentinel */
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}
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};
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MODULE_DEVICE_TABLE(of, mt6397_of_match);
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static const struct platform_device_id mt6397_id[] = {
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{ "mt6397", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(platform, mt6397_id);
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static struct platform_driver mt6397_driver = {
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.probe = mt6397_probe,
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.driver = {
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.name = "mt6397",
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.of_match_table = mt6397_of_match,
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},
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.id_table = mt6397_id,
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};
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module_platform_driver(mt6397_driver);
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MODULE_AUTHOR("Flora Fu, MediaTek");
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MODULE_DESCRIPTION("Driver for MediaTek MT6397 PMIC");
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MODULE_LICENSE("GPL");
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