// SPDX-License-Identifier: GPL-2.0-only /* * Rockchip IO Voltage Domain driver * * Copyright 2014 MundoReader S.L. * Copyright 2014 Google, Inc. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/err.h> #include <linux/mfd/syscon.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #define MAX_SUPPLIES … /* * The max voltage for 1.8V and 3.3V come from the Rockchip datasheet under * "Recommended Operating Conditions" for "Digital GPIO". When the typical * is 3.3V the max is 3.6V. When the typical is 1.8V the max is 1.98V. * * They are used like this: * - If the voltage on a rail is above the "1.8" voltage (1.98V) we'll tell the * SoC we're at 3.3. * - If the voltage on a rail is above the "3.3" voltage (3.6V) we'll consider * that to be an error. */ #define MAX_VOLTAGE_1_8 … #define MAX_VOLTAGE_3_3 … #define PX30_IO_VSEL … #define PX30_IO_VSEL_VCCIO6_SRC … #define PX30_IO_VSEL_VCCIO6_SUPPLY_NUM … #define RK3288_SOC_CON2 … #define RK3288_SOC_CON2_FLASH0 … #define RK3288_SOC_FLASH_SUPPLY_NUM … #define RK3328_SOC_CON4 … #define RK3328_SOC_CON4_VCCIO2 … #define RK3328_SOC_VCCIO2_SUPPLY_NUM … #define RK3368_SOC_CON15 … #define RK3368_SOC_CON15_FLASH0 … #define RK3368_SOC_FLASH_SUPPLY_NUM … #define RK3399_PMUGRF_CON0 … #define RK3399_PMUGRF_CON0_VSEL … #define RK3399_PMUGRF_VSEL_SUPPLY_NUM … #define RK3568_PMU_GRF_IO_VSEL0 … #define RK3568_PMU_GRF_IO_VSEL1 … #define RK3568_PMU_GRF_IO_VSEL2 … struct rockchip_iodomain; struct rockchip_iodomain_supply { … }; struct rockchip_iodomain_soc_data { … }; struct rockchip_iodomain { … }; static int rk3568_iodomain_write(struct rockchip_iodomain_supply *supply, int uV) { … } static int rockchip_iodomain_write(struct rockchip_iodomain_supply *supply, int uV) { … } static int rockchip_iodomain_notify(struct notifier_block *nb, unsigned long event, void *data) { … } static void px30_iodomain_init(struct rockchip_iodomain *iod) { … } static void rk3288_iodomain_init(struct rockchip_iodomain *iod) { … } static void rk3328_iodomain_init(struct rockchip_iodomain *iod) { … } static void rk3368_iodomain_init(struct rockchip_iodomain *iod) { … } static void rk3399_pmu_iodomain_init(struct rockchip_iodomain *iod) { … } static const struct rockchip_iodomain_soc_data soc_data_px30 = …; static const struct rockchip_iodomain_soc_data soc_data_px30_pmu = …; /* * On the rk3188 the io-domains are handled by a shared register with the * lower 8 bits being still being continuing drive-strength settings. */ static const struct rockchip_iodomain_soc_data soc_data_rk3188 = …; static const struct rockchip_iodomain_soc_data soc_data_rk3228 = …; static const struct rockchip_iodomain_soc_data soc_data_rk3288 = …; static const struct rockchip_iodomain_soc_data soc_data_rk3328 = …; static const struct rockchip_iodomain_soc_data soc_data_rk3368 = …; static const struct rockchip_iodomain_soc_data soc_data_rk3368_pmu = …; static const struct rockchip_iodomain_soc_data soc_data_rk3399 = …; static const struct rockchip_iodomain_soc_data soc_data_rk3399_pmu = …; static const struct rockchip_iodomain_soc_data soc_data_rk3568_pmu = …; static const struct rockchip_iodomain_soc_data soc_data_rv1108 = …; static const struct rockchip_iodomain_soc_data soc_data_rv1108_pmu = …; static const struct rockchip_iodomain_soc_data soc_data_rv1126_pmu = …; static const struct of_device_id rockchip_iodomain_match[] = …; MODULE_DEVICE_TABLE(of, rockchip_iodomain_match); static int rockchip_iodomain_probe(struct platform_device *pdev) { … } static void rockchip_iodomain_remove(struct platform_device *pdev) { … } static struct platform_driver rockchip_iodomain_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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