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249 lines
5.9 KiB
249 lines
5.9 KiB
// 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/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/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 mt6323_keys_resources[] = { |
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DEFINE_RES_IRQ(MT6323_IRQ_STATUS_PWRKEY), |
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DEFINE_RES_IRQ(MT6323_IRQ_STATUS_FCHRKEY), |
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}; |
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static const struct resource mt6397_keys_resources[] = { |
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DEFINE_RES_IRQ(MT6397_IRQ_PWRKEY), |
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DEFINE_RES_IRQ(MT6397_IRQ_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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}; |
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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 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,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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