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Message-Id: <20220531124959.202787-7-fparent@baylibre.com>
Date: Tue, 31 May 2022 14:49:58 +0200
From: Fabien Parent <fparent@...libre.com>
To: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>
Cc: Fabien Parent <fparent@...libre.com>, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org
Subject: [PATCH 6/7] regulator: add mt6357 regulator
Add regulator driver for the MT6357 PMIC.
Signed-off-by: Fabien Parent <fparent@...libre.com>
---
drivers/regulator/Kconfig | 9 +
drivers/regulator/Makefile | 1 +
drivers/regulator/mt6357-regulator.c | 485 +++++++++++++++++++++
include/linux/regulator/mt6357-regulator.h | 51 +++
4 files changed, 546 insertions(+)
create mode 100644 drivers/regulator/mt6357-regulator.c
create mode 100644 include/linux/regulator/mt6357-regulator.h
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index cbe0f96ca342..488752f9b762 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -777,6 +777,15 @@ config REGULATOR_MT6323
This driver supports the control of different power rails of device
through regulator interface.
+config REGULATOR_MT6357
+ tristate "MediaTek MT6357 PMIC"
+ depends on MFD_MT6397
+ help
+ Say y here to select this option to enable the power regulator of
+ MediaTek MT6357 PMIC.
+ This driver supports the control of different power rails of device
+ through regulator interface.
+
config REGULATOR_MT6358
tristate "MediaTek MT6358 PMIC"
depends on MFD_MT6397
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 8d3ee8b6d41d..b03780d8a52c 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -94,6 +94,7 @@ obj-$(CONFIG_REGULATOR_MPQ7920) += mpq7920.o
obj-$(CONFIG_REGULATOR_MT6311) += mt6311-regulator.o
obj-$(CONFIG_REGULATOR_MT6315) += mt6315-regulator.o
obj-$(CONFIG_REGULATOR_MT6323) += mt6323-regulator.o
+obj-$(CONFIG_REGULATOR_MT6357) += mt6357-regulator.o
obj-$(CONFIG_REGULATOR_MT6358) += mt6358-regulator.o
obj-$(CONFIG_REGULATOR_MT6359) += mt6359-regulator.o
obj-$(CONFIG_REGULATOR_MT6360) += mt6360-regulator.o
diff --git a/drivers/regulator/mt6357-regulator.c b/drivers/regulator/mt6357-regulator.c
new file mode 100644
index 000000000000..85856d59e050
--- /dev/null
+++ b/drivers/regulator/mt6357-regulator.c
@@ -0,0 +1,485 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Copyright (c) 2022 BayLibre, SAS.
+ * Author: Chen Zhong <chen.zhong@...iatek.com>
+ * Author: Fabien Parent <fparent@...libre.com>
+ *
+ * Based on mt6397-regulator.c
+ */
+
+#include <linux/module.h>
+#include <linux/linear_range.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/mt6397/core.h>
+#include <linux/mfd/mt6357/registers.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/mt6357-regulator.h>
+#include <linux/regulator/of_regulator.h>
+
+/*
+ * MT6357 regulators' information
+ *
+ * @desc: standard fields of regulator description.
+ * @vselon_reg: Register sections for hardware control mode of bucks
+ * @vselctrl_reg: Register for controlling the buck control mode.
+ * @vselctrl_mask: Mask for query buck's voltage control mode.
+ */
+struct mt6357_regulator_info {
+ struct regulator_desc desc;
+ const u32 *index_table;
+ unsigned int n_table;
+ u32 vsel_shift;
+ u32 da_vsel_reg;
+ u32 da_vsel_mask;
+ u32 da_vsel_shift;
+};
+
+#define MT6357_BUCK(match, vreg, min, max, step, \
+ volt_ranges, vosel_reg, vosel_mask, _da_vsel_mask) \
+[MT6357_ID_##vreg] = { \
+ .desc = { \
+ .name = #vreg, \
+ .of_match = of_match_ptr(match), \
+ .regulators_node = "regulators", \
+ .ops = &mt6357_volt_range_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = MT6357_ID_##vreg, \
+ .owner = THIS_MODULE, \
+ .n_voltages = ((max) - (min)) / (step) + 1, \
+ .linear_ranges = volt_ranges, \
+ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \
+ .vsel_reg = vosel_reg, \
+ .vsel_mask = vosel_mask, \
+ .enable_reg = MT6357_BUCK_##vreg##_CON0, \
+ .enable_mask = BIT(0), \
+ }, \
+ .da_vsel_reg = MT6357_BUCK_##vreg##_DBG0, \
+ .da_vsel_mask = vosel_mask, \
+ .da_vsel_shift = 0, \
+}
+
+#define MT6357_LDO(match, vreg, ldo_volt_table, \
+ ldo_index_table, enreg, vosel, \
+ vosel_mask) \
+[MT6357_ID_##vreg] = { \
+ .desc = { \
+ .name = #vreg, \
+ .of_match = of_match_ptr(match), \
+ .regulators_node = "regulators", \
+ .ops = &mt6357_volt_table_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = MT6357_ID_##vreg, \
+ .owner = THIS_MODULE, \
+ .n_voltages = ARRAY_SIZE(ldo_volt_table), \
+ .volt_table = ldo_volt_table, \
+ .vsel_reg = vosel, \
+ .vsel_mask = vosel_mask << 8, \
+ .enable_reg = enreg, \
+ .enable_mask = BIT(0), \
+ }, \
+ .index_table = ldo_index_table, \
+ .n_table = ARRAY_SIZE(ldo_index_table), \
+}
+
+#define MT6357_LDO1(match, vreg, min, max, step, volt_ranges, \
+ enreg, vosel, vosel_mask) \
+[MT6357_ID_##vreg] = { \
+ .desc = { \
+ .name = #vreg, \
+ .of_match = of_match_ptr(match), \
+ .regulators_node = "regulators", \
+ .ops = &mt6357_volt_range_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = MT6357_ID_##vreg, \
+ .owner = THIS_MODULE, \
+ .n_voltages = ((max) - (min)) / (step) + 1, \
+ .linear_ranges = volt_ranges, \
+ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \
+ .vsel_reg = vosel, \
+ .vsel_mask = vosel_mask, \
+ .enable_reg = enreg, \
+ .enable_mask = BIT(0), \
+ }, \
+ .da_vsel_reg = MT6357_LDO_##vreg##_DBG0, \
+ .da_vsel_mask = 0x7f, \
+ .da_vsel_shift = 8, \
+}
+
+#define MT6357_REG_FIXED(match, vreg, volt) \
+[MT6357_ID_##vreg] = { \
+ .desc = { \
+ .name = #vreg, \
+ .of_match = of_match_ptr(match), \
+ .regulators_node = "regulators", \
+ .ops = &mt6357_volt_fixed_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = MT6357_ID_##vreg, \
+ .owner = THIS_MODULE, \
+ .n_voltages = 1, \
+ .enable_reg = MT6357_LDO_##vreg##_CON0, \
+ .enable_mask = BIT(0), \
+ .min_uV = volt, \
+ }, \
+}
+
+static int mt6357_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ int idx, ret;
+ const u32 *pvol;
+ struct mt6357_regulator_info *info = rdev_get_drvdata(rdev);
+
+ pvol = info->index_table;
+
+ idx = pvol[selector];
+ ret = regmap_update_bits(rdev->regmap, info->desc.vsel_reg,
+ info->desc.vsel_mask,
+ idx << 8);
+
+ return ret;
+}
+
+static int mt6357_get_voltage_sel(struct regulator_dev *rdev)
+{
+ int idx, ret;
+ u32 selector;
+ struct mt6357_regulator_info *info = rdev_get_drvdata(rdev);
+ const u32 *pvol;
+
+ ret = regmap_read(rdev->regmap, info->desc.vsel_reg, &selector);
+ if (ret != 0) {
+ dev_info(&rdev->dev,
+ "Failed to get mt6357 %s vsel reg: %d\n",
+ info->desc.name, ret);
+ return ret;
+ }
+
+ selector = (selector & info->desc.vsel_mask) >> 8;
+ pvol = info->index_table;
+ for (idx = 0; idx < info->desc.n_voltages; idx++) {
+ if (pvol[idx] == selector)
+ return idx;
+ }
+
+ return -EINVAL;
+}
+
+static int mt6357_get_buck_voltage_sel(struct regulator_dev *rdev)
+{
+ int ret, regval;
+ struct mt6357_regulator_info *info = rdev_get_drvdata(rdev);
+
+ ret = regmap_read(rdev->regmap, info->da_vsel_reg, ®val);
+ if (ret != 0) {
+ dev_err(&rdev->dev,
+ "Failed to get mt6357 Buck %s vsel reg: %d\n",
+ info->desc.name, ret);
+ return ret;
+ }
+
+ ret = (regval & info->da_vsel_mask) >> info->da_vsel_shift;
+
+ return ret;
+}
+
+static const struct regulator_ops mt6357_volt_range_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = mt6357_get_buck_voltage_sel,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static const struct regulator_ops mt6357_volt_table_ops = {
+ .list_voltage = regulator_list_voltage_table,
+ .map_voltage = regulator_map_voltage_iterate,
+ .set_voltage_sel = mt6357_set_voltage_sel,
+ .get_voltage_sel = mt6357_get_voltage_sel,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static const struct regulator_ops mt6357_volt_fixed_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static const int vxo22_voltages[] = {
+ 2200000,
+ 2400000,
+};
+
+static const int vefuse_voltages[] = {
+ 1200000,
+ 1300000,
+ 1500000,
+ 1800000,
+ 2800000,
+ 2900000,
+ 3000000,
+ 3300000,
+};
+
+static const int vcn33_voltages[] = {
+ 3300000,
+ 3400000,
+ 3500000,
+};
+
+static const int vcama_voltages[] = {
+ 2500000,
+ 2800000,
+};
+
+static const int vcamd_voltages[] = {
+ 1000000,
+ 1100000,
+ 1200000,
+ 1300000,
+ 1500000,
+ 1800000,
+};
+
+static const int vldo28_voltages[] = {
+ 2800000,
+ 3000000,
+};
+
+static const int vdram_voltages[] = {
+ 1100000,
+ 1200000,
+};
+
+static const int vsim_voltages[] = {
+ 1700000,
+ 1800000,
+ 2700000,
+ 3000000,
+ 3100000,
+};
+
+static const int vibr_voltages[] = {
+ 1200000,
+ 1300000,
+ 1500000,
+ 1800000,
+ 2000000,
+ 2800000,
+ 3000000,
+ 3300000,
+};
+
+static const int vmc_voltages[] = {
+ 1800000,
+ 2900000,
+ 3000000,
+ 3300000,
+};
+
+static const int vmch_voltages[] = {
+ 2900000,
+ 3000000,
+ 3300000,
+};
+
+static const int vemc_voltages[] = {
+ 2900000,
+ 3000000,
+ 3300000,
+};
+
+static const int vusb_voltages[] = {
+ 3000000,
+ 3100000,
+};
+
+static const int vmc_idx[] = {
+ 4, 10, 11, 13,
+};
+
+static const int vmch_idx[] = {
+ 2, 3, 5,
+};
+
+static const int vemc_idx[] = {
+ 2, 3, 5,
+};
+
+static const int vusb_idx[] = {
+ 3, 4,
+};
+
+static const int vxo22_idx[] = {
+ 0, 2,
+};
+
+static const int vefuse_idx[] = {
+ 0, 1, 2, 4, 9, 10, 11, 13,
+};
+
+static const int vcn33_idx[] = {
+ 1, 2, 3,
+};
+
+static const int vcama_idx[] = {
+ 7, 10,
+};
+
+static const int vcamd_idx[] = {
+ 4, 5, 6, 7, 9, 12,
+};
+
+static const int vldo28_idx[] = {
+ 1, 3,
+};
+
+static const int vdram_idx[] = {
+ 1, 2,
+};
+
+static const int vsim_idx[] = {
+ 3, 4, 8, 11, 12,
+};
+
+static const int vibr_idx[] = {
+ 0, 1, 2, 4, 5, 9, 11, 13,
+};
+
+static const struct linear_range buck_volt_range1[] = {
+ REGULATOR_LINEAR_RANGE(518750, 0, 0x7f, 6250),
+};
+
+static const struct linear_range buck_volt_range2[] = {
+ REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250),
+};
+
+static const struct linear_range buck_volt_range3[] = {
+ REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000),
+};
+
+static const struct linear_range buck_volt_range4[] = {
+ REGULATOR_LINEAR_RANGE(1200000, 0, 0x7f, 12500),
+};
+
+/* The array is indexed by id(MT6357_ID_XXX) */
+static struct mt6357_regulator_info mt6357_regulators[] = {
+ /* Bucks */
+ MT6357_BUCK("buck-vcore", VCORE, 518750, 1312500, 6250,
+ buck_volt_range1, MT6357_BUCK_VCORE_ELR0, 0x7f, 0x7f),
+ MT6357_BUCK("buck-vproc", VPROC, 518750, 1312500, 6250,
+ buck_volt_range1, MT6357_BUCK_VPROC_ELR0, 0x7f, 0x7f),
+ MT6357_BUCK("buck-vmodem", VMODEM, 500000, 1293750, 6250,
+ buck_volt_range2, MT6357_BUCK_VMODEM_ELR0, 0x7f, 0x7f),
+ MT6357_BUCK("buck-vpa", VPA, 500000, 3650000, 50000,
+ buck_volt_range3, MT6357_BUCK_VPA_CON1, 0x3f, 0x3f),
+ MT6357_BUCK("buck-vs1", VS1, 1200000, 2787500, 12500,
+ buck_volt_range4, MT6357_BUCK_VS1_ELR0, 0x7f, 0x7f),
+
+ /* LDOs */
+ MT6357_LDO("ldo-vcama", VCAMA, vcama_voltages, vcama_idx,
+ MT6357_LDO_VCAMA_CON0, MT6357_VCAMA_ANA_CON0, 0xf),
+ MT6357_LDO("ldo-vcamd", VCAMD, vcamd_voltages, vcamd_idx,
+ MT6357_LDO_VCAMD_CON0, MT6357_VCAMD_ANA_CON0, 0xf),
+ MT6357_LDO("ldo-vcn33-bt", VCN33_BT, vcn33_voltages, vcn33_idx,
+ MT6357_LDO_VCN33_CON0_0, MT6357_VCN33_ANA_CON0, 0x3),
+ MT6357_LDO("ldo-vcn33-wifi", VCN33_WIFI, vcn33_voltages, vcn33_idx,
+ MT6357_LDO_VCN33_CON0_1, MT6357_VCN33_ANA_CON0, 0x3),
+ MT6357_LDO("ldo-vdram", VDRAM, vdram_voltages, vdram_idx,
+ MT6357_LDO_VDRAM_CON0, MT6357_VDRAM_ELR_2, 0x3),
+ MT6357_LDO("ldo-vefuse", VEFUSE, vefuse_voltages, vefuse_idx,
+ MT6357_LDO_VEFUSE_CON0, MT6357_VEFUSE_ANA_CON0, 0xf),
+ MT6357_LDO("ldo-vemc", VEMC, vemc_voltages, vemc_idx,
+ MT6357_LDO_VEMC_CON0, MT6357_VEMC_ANA_CON0, 0x7),
+ MT6357_LDO("ldo-vibr", VIBR, vibr_voltages, vibr_idx,
+ MT6357_LDO_VIBR_CON0, MT6357_VIBR_ANA_CON0, 0xf),
+ MT6357_LDO("ldo-vldo28", VLDO28, vldo28_voltages, vldo28_idx,
+ MT6357_LDO_VLDO28_CON0_0, MT6357_VLDO28_ANA_CON0, 0x3),
+ MT6357_LDO("ldo-vmc", VMC, vmc_voltages, vmc_idx,
+ MT6357_LDO_VMC_CON0, MT6357_VMC_ANA_CON0, 0xf),
+ MT6357_LDO("ldo-vmch", VMCH, vmch_voltages, vmch_idx,
+ MT6357_LDO_VMCH_CON0, MT6357_VMCH_ANA_CON0, 0x7),
+ MT6357_LDO("ldo-vsim1", VSIM1, vsim_voltages, vsim_idx,
+ MT6357_LDO_VSIM1_CON0, MT6357_VSIM1_ANA_CON0, 0xf),
+ MT6357_LDO("ldo-vsim2", VSIM2, vsim_voltages, vsim_idx,
+ MT6357_LDO_VSIM2_CON0, MT6357_VSIM2_ANA_CON0, 0xf),
+ MT6357_LDO("ldo-vusb33", VUSB33, vusb_voltages, vusb_idx,
+ MT6357_LDO_VUSB33_CON0_0, MT6357_VUSB33_ANA_CON0, 0x7),
+ MT6357_LDO("ldo-vxo22", VXO22, vxo22_voltages, vxo22_idx,
+ MT6357_LDO_VXO22_CON0, MT6357_VXO22_ANA_CON0, 0x3),
+
+ MT6357_LDO1("ldo-vsram-proc", VSRAM_PROC, 518750, 1312500, 6250,
+ buck_volt_range1, MT6357_LDO_VSRAM_PROC_CON0,
+ MT6357_LDO_VSRAM_CON0, 0x7f),
+ MT6357_LDO1("ldo-vsram-others", VSRAM_OTHERS, 518750, 1312500, 6250,
+ buck_volt_range1, MT6357_LDO_VSRAM_OTHERS_CON0,
+ MT6357_LDO_VSRAM_CON1, 0x7f),
+
+ MT6357_REG_FIXED("ldo-vaud28", VAUD28, 2800000),
+ MT6357_REG_FIXED("ldo-vaux18", VAUX18, 1800000),
+ MT6357_REG_FIXED("ldo-vcamio18", VCAMIO, 1800000),
+ MT6357_REG_FIXED("ldo-vcn18", VCN18, 1800000),
+ MT6357_REG_FIXED("ldo-vcn28", VCN28, 2800000),
+ MT6357_REG_FIXED("ldo-vfe28", VFE28, 2800000),
+ MT6357_REG_FIXED("ldo-vio18", VIO18, 1800000),
+ MT6357_REG_FIXED("ldo-vio28", VIO28, 2800000),
+ MT6357_REG_FIXED("ldo-vrf12", VRF12, 1200000),
+ MT6357_REG_FIXED("ldo-vrf18", VRF18, 1800000),
+};
+
+static int mt6357_regulator_probe(struct platform_device *pdev)
+{
+ struct mt6397_chip *mt6357 = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_config config = {};
+ struct regulator_dev *rdev;
+ int i;
+
+ pdev->dev.of_node = pdev->dev.parent->of_node;
+
+ for (i = 0; i < MT6357_MAX_REGULATOR; i++) {
+ config.dev = &pdev->dev;
+ config.driver_data = &mt6357_regulators[i];
+ config.regmap = mt6357->regmap;
+
+ rdev = devm_regulator_register(&pdev->dev,
+ &mt6357_regulators[i].desc,
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "failed to register %s\n",
+ mt6357_regulators[i].desc.name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id mt6357_platform_ids[] = {
+ { "mt6357-regulator" },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(platform, mt6357_platform_ids);
+
+static struct platform_driver mt6357_regulator_driver = {
+ .driver = {
+ .name = "mt6357-regulator",
+ },
+ .probe = mt6357_regulator_probe,
+ .id_table = mt6357_platform_ids,
+};
+
+module_platform_driver(mt6357_regulator_driver);
+
+MODULE_AUTHOR("Fabien Parent <fparent@...libre.com>");
+MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6357 PMIC");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/regulator/mt6357-regulator.h b/include/linux/regulator/mt6357-regulator.h
new file mode 100644
index 000000000000..238b1ee77ea6
--- /dev/null
+++ b/include/linux/regulator/mt6357-regulator.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ */
+
+#ifndef __LINUX_REGULATOR_MT6357_H
+#define __LINUX_REGULATOR_MT6357_H
+
+enum {
+ /* Bucks */
+ MT6357_ID_VCORE,
+ MT6357_ID_VMODEM,
+ MT6357_ID_VPA,
+ MT6357_ID_VPROC,
+ MT6357_ID_VS1,
+
+ /* LDOs */
+ MT6357_ID_VAUX18,
+ MT6357_ID_VAUD28,
+ MT6357_ID_VCAMA,
+ MT6357_ID_VCAMD,
+ MT6357_ID_VCAMIO,
+ MT6357_ID_VCN18,
+ MT6357_ID_VCN28,
+ MT6357_ID_VCN33_BT,
+ MT6357_ID_VCN33_WIFI,
+ MT6357_ID_VDRAM,
+ MT6357_ID_VEFUSE,
+ MT6357_ID_VEMC,
+ MT6357_ID_VFE28,
+ MT6357_ID_VIBR,
+ MT6357_ID_VIO18,
+ MT6357_ID_VIO28,
+ MT6357_ID_VLDO28,
+ MT6357_ID_VMC,
+ MT6357_ID_VMCH,
+ MT6357_ID_VRF12,
+ MT6357_ID_VRF18,
+ MT6357_ID_VSIM1,
+ MT6357_ID_VSIM2,
+ MT6357_ID_VSRAM_OTHERS,
+ MT6357_ID_VSRAM_PROC,
+ MT6357_ID_VUSB33,
+ MT6357_ID_VXO22,
+
+ MT6357_ID_RG_MAX,
+};
+
+#define MT6357_MAX_REGULATOR MT6357_ID_RG_MAX
+
+#endif /* __LINUX_REGULATOR_MT6357_H */
--
2.36.1
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