diff options
Diffstat (limited to 'drivers/mfd/mt6397-core.c')
| -rw-r--r-- | drivers/mfd/mt6397-core.c | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c new file mode 100644 index 000000000..f6c1f80f9 --- /dev/null +++ b/drivers/mfd/mt6397-core.c @@ -0,0 +1,389 @@ +// 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/mt6331/core.h> +#include <linux/mfd/mt6357/core.h> +#include <linux/mfd/mt6358/core.h> +#include <linux/mfd/mt6359/core.h> +#include <linux/mfd/mt6397/core.h> +#include <linux/mfd/mt6323/registers.h> +#include <linux/mfd/mt6331/registers.h> +#include <linux/mfd/mt6357/registers.h> +#include <linux/mfd/mt6358/registers.h> +#include <linux/mfd/mt6359/registers.h> +#include <linux/mfd/mt6397/registers.h> + +#define MT6323_RTC_BASE 0x8000 +#define MT6323_RTC_SIZE 0x40 + +#define MT6357_RTC_BASE 0x0588 +#define MT6357_RTC_SIZE 0x3c + +#define MT6331_RTC_BASE 0x4000 +#define MT6331_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 mt6357_rtc_resources[] = { + DEFINE_RES_MEM(MT6357_RTC_BASE, MT6357_RTC_SIZE), + DEFINE_RES_IRQ(MT6357_IRQ_RTC), +}; + +static const struct resource mt6331_rtc_resources[] = { + DEFINE_RES_MEM(MT6331_RTC_BASE, MT6331_RTC_SIZE), + DEFINE_RES_IRQ(MT6331_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 mt6358_keys_resources[] = { + DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY, "homekey"), + DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY_R, "powerkey_r"), + DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY_R, "homekey_r"), +}; + +static const struct resource mt6359_keys_resources[] = { + DEFINE_RES_IRQ_NAMED(MT6359_IRQ_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6359_IRQ_HOMEKEY, "homekey"), + DEFINE_RES_IRQ_NAMED(MT6359_IRQ_PWRKEY_R, "powerkey_r"), + DEFINE_RES_IRQ_NAMED(MT6359_IRQ_HOMEKEY_R, "homekey_r"), +}; + +static const struct resource mt6323_keys_resources[] = { + DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_FCHRKEY, "homekey"), +}; + +static const struct resource mt6357_keys_resources[] = { + DEFINE_RES_IRQ_NAMED(MT6357_IRQ_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6357_IRQ_HOMEKEY, "homekey"), + DEFINE_RES_IRQ_NAMED(MT6357_IRQ_PWRKEY_R, "powerkey_r"), + DEFINE_RES_IRQ_NAMED(MT6357_IRQ_HOMEKEY_R, "homekey_r"), +}; + +static const struct resource mt6331_keys_resources[] = { + DEFINE_RES_IRQ_NAMED(MT6331_IRQ_STATUS_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6331_IRQ_STATUS_HOMEKEY, "homekey"), +}; + +static const struct resource mt6397_keys_resources[] = { + DEFINE_RES_IRQ_NAMED(MT6397_IRQ_PWRKEY, "powerkey"), + DEFINE_RES_IRQ_NAMED(MT6397_IRQ_HOMEKEY, "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 mt6357_devs[] = { + { + .name = "mt6357-regulator", + }, { + .name = "mt6357-rtc", + .num_resources = ARRAY_SIZE(mt6357_rtc_resources), + .resources = mt6357_rtc_resources, + .of_compatible = "mediatek,mt6357-rtc", + }, { + .name = "mtk-pmic-keys", + .num_resources = ARRAY_SIZE(mt6357_keys_resources), + .resources = mt6357_keys_resources, + .of_compatible = "mediatek,mt6357-keys" + }, +}; + +/* MT6331 is always used in combination with MT6332 */ +static const struct mfd_cell mt6331_mt6332_devs[] = { + { + .name = "mt6331-rtc", + .num_resources = ARRAY_SIZE(mt6331_rtc_resources), + .resources = mt6331_rtc_resources, + .of_compatible = "mediatek,mt6331-rtc", + }, { + .name = "mt6331-regulator", + .of_compatible = "mediatek,mt6331-regulator" + }, { + .name = "mt6332-regulator", + .of_compatible = "mediatek,mt6332-regulator" + }, { + .name = "mtk-pmic-keys", + .num_resources = ARRAY_SIZE(mt6331_keys_resources), + .resources = mt6331_keys_resources, + .of_compatible = "mediatek,mt6331-keys" + }, +}; + +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" + }, { + .name = "mt6358-keys", + .num_resources = ARRAY_SIZE(mt6358_keys_resources), + .resources = mt6358_keys_resources, + .of_compatible = "mediatek,mt6358-keys" + }, +}; + +static const struct mfd_cell mt6359_devs[] = { + { .name = "mt6359-regulator", }, + { + .name = "mt6359-rtc", + .num_resources = ARRAY_SIZE(mt6358_rtc_resources), + .resources = mt6358_rtc_resources, + .of_compatible = "mediatek,mt6358-rtc", + }, + { .name = "mt6359-sound", }, + { + .name = "mtk-pmic-keys", + .num_resources = ARRAY_SIZE(mt6359_keys_resources), + .resources = mt6359_keys_resources, + .of_compatible = "mediatek,mt6359-keys" + }, +}; + +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 mt6357_core = { + .cid_addr = MT6357_SWCID, + .cid_shift = 8, + .cells = mt6357_devs, + .cell_size = ARRAY_SIZE(mt6357_devs), + .irq_init = mt6358_irq_init, +}; + +static const struct chip_data mt6331_mt6332_core = { + .cid_addr = MT6331_HWCID, + .cid_shift = 0, + .cells = mt6331_mt6332_devs, + .cell_size = ARRAY_SIZE(mt6331_mt6332_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 mt6359_core = { + .cid_addr = MT6359_SWCID, + .cid_shift = 8, + .cells = mt6359_devs, + .cell_size = ARRAY_SIZE(mt6359_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,mt6331", + .data = &mt6331_mt6332_core, + }, { + .compatible = "mediatek,mt6357", + .data = &mt6357_core, + }, { + .compatible = "mediatek,mt6358", + .data = &mt6358_core, + }, { + .compatible = "mediatek,mt6359", + .data = &mt6359_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 = 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"); |