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Diffstat (limited to 'drivers/regulator/tps6586x-regulator.c')
-rw-r--r--drivers/regulator/tps6586x-regulator.c542
1 files changed, 542 insertions, 0 deletions
diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c
new file mode 100644
index 000000000..18bf4b885
--- /dev/null
+++ b/drivers/regulator/tps6586x-regulator.c
@@ -0,0 +1,542 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Regulator driver for TI TPS6586x
+ *
+ * Copyright (C) 2010 Compulab Ltd.
+ * Author: Mike Rapoport <mike@compulab.co.il>
+ *
+ * Based on da903x
+ * Copyright (C) 2006-2008 Marvell International Ltd.
+ * Copyright (C) 2008 Compulab Ltd.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/mfd/tps6586x.h>
+
+/* supply control and voltage setting */
+#define TPS6586X_SUPPLYENA 0x10
+#define TPS6586X_SUPPLYENB 0x11
+#define TPS6586X_SUPPLYENC 0x12
+#define TPS6586X_SUPPLYEND 0x13
+#define TPS6586X_SUPPLYENE 0x14
+#define TPS6586X_VCC1 0x20
+#define TPS6586X_VCC2 0x21
+#define TPS6586X_SM1V1 0x23
+#define TPS6586X_SM1V2 0x24
+#define TPS6586X_SM1SL 0x25
+#define TPS6586X_SM0V1 0x26
+#define TPS6586X_SM0V2 0x27
+#define TPS6586X_SM0SL 0x28
+#define TPS6586X_LDO2AV1 0x29
+#define TPS6586X_LDO2AV2 0x2A
+#define TPS6586X_LDO2BV1 0x2F
+#define TPS6586X_LDO2BV2 0x30
+#define TPS6586X_LDO4V1 0x32
+#define TPS6586X_LDO4V2 0x33
+
+/* converter settings */
+#define TPS6586X_SUPPLYV1 0x41
+#define TPS6586X_SUPPLYV2 0x42
+#define TPS6586X_SUPPLYV3 0x43
+#define TPS6586X_SUPPLYV4 0x44
+#define TPS6586X_SUPPLYV5 0x45
+#define TPS6586X_SUPPLYV6 0x46
+#define TPS6586X_SMODE1 0x47
+#define TPS6586X_SMODE2 0x48
+
+struct tps6586x_regulator {
+ struct regulator_desc desc;
+
+ int enable_bit[2];
+ int enable_reg[2];
+};
+
+static const struct regulator_ops tps6586x_rw_regulator_ops = {
+ .list_voltage = regulator_list_voltage_table,
+ .map_voltage = regulator_map_voltage_ascend,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
+static const struct regulator_ops tps6586x_rw_linear_regulator_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
+static const struct regulator_ops tps6586x_ro_regulator_ops = {
+ .list_voltage = regulator_list_voltage_table,
+ .map_voltage = regulator_map_voltage_ascend,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
+static const struct regulator_ops tps6586x_sys_regulator_ops = {
+};
+
+static const unsigned int tps6586x_ldo0_voltages[] = {
+ 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
+};
+
+static const unsigned int tps6586x_ldo_voltages[] = {
+ 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
+};
+
+static const unsigned int tps658640_rtc_voltages[] = {
+ 2500000, 2850000, 3100000, 3300000,
+};
+
+#define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \
+ ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
+ .desc = { \
+ .supply_name = _pin_name, \
+ .name = "REG-" #_id, \
+ .ops = &tps6586x_## _ops ## _regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = TPS6586X_ID_##_id, \
+ .n_voltages = ARRAY_SIZE(vdata##_voltages), \
+ .volt_table = vdata##_voltages, \
+ .owner = THIS_MODULE, \
+ .enable_reg = TPS6586X_SUPPLY##ereg0, \
+ .enable_mask = 1 << (ebit0), \
+ .vsel_reg = TPS6586X_##vreg, \
+ .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
+ .apply_reg = (goreg), \
+ .apply_bit = (gobit), \
+ }, \
+ .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
+ .enable_bit[0] = (ebit0), \
+ .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
+ .enable_bit[1] = (ebit1),
+
+#define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \
+ uv_step, vreg, shift, nbits, ereg0, \
+ ebit0, ereg1, ebit1, goreg, gobit) \
+ .desc = { \
+ .supply_name = _pin_name, \
+ .name = "REG-" #_id, \
+ .ops = &tps6586x_## _ops ## _regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = TPS6586X_ID_##_id, \
+ .n_voltages = n_volt, \
+ .min_uV = min_uv, \
+ .uV_step = uv_step, \
+ .owner = THIS_MODULE, \
+ .enable_reg = TPS6586X_SUPPLY##ereg0, \
+ .enable_mask = 1 << (ebit0), \
+ .vsel_reg = TPS6586X_##vreg, \
+ .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
+ .apply_reg = (goreg), \
+ .apply_bit = (gobit), \
+ }, \
+ .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
+ .enable_bit[0] = (ebit0), \
+ .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
+ .enable_bit[1] = (ebit1),
+
+#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
+ ereg0, ebit0, ereg1, ebit1) \
+{ \
+ TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \
+ ereg0, ebit0, ereg1, ebit1, 0, 0) \
+}
+
+#define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \
+ shift, nbits, ereg0, ebit0, ereg1, ebit1) \
+{ \
+ TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
+ min_uv, uv_step, vreg, shift, nbits, \
+ ereg0, ebit0, ereg1, ebit1, 0, 0) \
+}
+
+#define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \
+ ereg0, ebit0, ereg1, ebit1) \
+{ \
+ TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \
+ ereg0, ebit0, ereg1, ebit1, 0, 0) \
+}
+
+#define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \
+ nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
+{ \
+ TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
+ min_uv, uv_step, vreg, shift, nbits, \
+ ereg0, ebit0, ereg1, ebit1, goreg, \
+ gobit) \
+}
+
+#define TPS6586X_SYS_REGULATOR() \
+{ \
+ .desc = { \
+ .supply_name = "sys", \
+ .name = "REG-SYS", \
+ .ops = &tps6586x_sys_regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = TPS6586X_ID_SYS, \
+ .owner = THIS_MODULE, \
+ }, \
+}
+
+static struct tps6586x_regulator tps6586x_regulator[] = {
+ TPS6586X_SYS_REGULATOR(),
+ TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
+ END, 0),
+ TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
+ END, 2),
+ TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
+ ENE, 6),
+ TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
+ END, 4),
+ TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
+ END, 5),
+ TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
+ END, 6),
+ TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
+ ENE, 7),
+ TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
+ V4, 7),
+ TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1,
+ 0, 5, ENC, 1, END, 1),
+ TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2,
+ 0, 5, ENC, 7, END, 7),
+ TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5,
+ ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)),
+ TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5,
+ ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)),
+ TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5,
+ ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)),
+ TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5,
+ ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)),
+};
+
+static struct tps6586x_regulator tps658623_regulator[] = {
+ TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2,
+ 0, 5, ENC, 7, END, 7),
+};
+
+static struct tps6586x_regulator tps658640_regulator[] = {
+ TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3,
+ ENC, 2, END, 2),
+ TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3,
+ ENE, 6, ENE, 6),
+ TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3,
+ ENC, 4, END, 4),
+ TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3,
+ ENC, 5, END, 5),
+ TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3,
+ ENC, 6, END, 6),
+ TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3,
+ ENE, 7, ENE, 7),
+ TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2,
+ 0, 5, ENC, 7, END, 7),
+
+ TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2,
+ V4, 7, V4, 7),
+};
+
+static struct tps6586x_regulator tps658643_regulator[] = {
+ TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2,
+ 0, 5, ENC, 7, END, 7),
+};
+
+/*
+ * TPS6586X has 2 enable bits that are OR'ed to determine the actual
+ * regulator state. Clearing one of this bits allows switching
+ * regulator on and of with single register write.
+ */
+static inline int tps6586x_regulator_preinit(struct device *parent,
+ struct tps6586x_regulator *ri)
+{
+ uint8_t val1, val2;
+ int ret;
+
+ if (ri->enable_reg[0] == ri->enable_reg[1] &&
+ ri->enable_bit[0] == ri->enable_bit[1])
+ return 0;
+
+ ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
+ if (ret)
+ return ret;
+
+ ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
+ if (ret)
+ return ret;
+
+ if (!(val2 & (1 << ri->enable_bit[1])))
+ return 0;
+
+ /*
+ * The regulator is on, but it's enabled with the bit we don't
+ * want to use, so we switch the enable bits
+ */
+ if (!(val1 & (1 << ri->enable_bit[0]))) {
+ ret = tps6586x_set_bits(parent, ri->enable_reg[0],
+ 1 << ri->enable_bit[0]);
+ if (ret)
+ return ret;
+ }
+
+ return tps6586x_clr_bits(parent, ri->enable_reg[1],
+ 1 << ri->enable_bit[1]);
+}
+
+static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
+ int id, struct regulator_init_data *p)
+{
+ struct device *parent = pdev->dev.parent;
+ struct tps6586x_settings *setting = p->driver_data;
+ uint8_t reg;
+
+ if (setting == NULL)
+ return 0;
+
+ if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
+ return 0;
+
+ /* only SM0 and SM1 can have the slew rate settings */
+ switch (id) {
+ case TPS6586X_ID_SM_0:
+ reg = TPS6586X_SM0SL;
+ break;
+ case TPS6586X_ID_SM_1:
+ reg = TPS6586X_SM1SL;
+ break;
+ default:
+ dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
+ return -EINVAL;
+ }
+
+ return tps6586x_write(parent, reg,
+ setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
+}
+
+static struct tps6586x_regulator *find_regulator_info(int id, int version)
+{
+ struct tps6586x_regulator *ri;
+ struct tps6586x_regulator *table = NULL;
+ int num;
+ int i;
+
+ switch (version) {
+ case TPS658623:
+ case TPS658624:
+ table = tps658623_regulator;
+ num = ARRAY_SIZE(tps658623_regulator);
+ break;
+ case TPS658640:
+ case TPS658640v2:
+ table = tps658640_regulator;
+ num = ARRAY_SIZE(tps658640_regulator);
+ break;
+ case TPS658643:
+ table = tps658643_regulator;
+ num = ARRAY_SIZE(tps658643_regulator);
+ break;
+ }
+
+ /* Search version specific table first */
+ if (table) {
+ for (i = 0; i < num; i++) {
+ ri = &table[i];
+ if (ri->desc.id == id)
+ return ri;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
+ ri = &tps6586x_regulator[i];
+ if (ri->desc.id == id)
+ return ri;
+ }
+ return NULL;
+}
+
+#ifdef CONFIG_OF
+static struct of_regulator_match tps6586x_matches[] = {
+ { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
+ { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
+ { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
+ { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
+ { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
+ { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
+ { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
+ { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
+ { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
+ { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
+ { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
+ { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
+ { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
+ { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
+ { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
+};
+
+static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
+ struct platform_device *pdev,
+ struct of_regulator_match **tps6586x_reg_matches)
+{
+ const unsigned int num = ARRAY_SIZE(tps6586x_matches);
+ struct device_node *np = pdev->dev.parent->of_node;
+ struct device_node *regs;
+ const char *sys_rail = NULL;
+ unsigned int i;
+ struct tps6586x_platform_data *pdata;
+ int err;
+
+ regs = of_get_child_by_name(np, "regulators");
+ if (!regs) {
+ dev_err(&pdev->dev, "regulator node not found\n");
+ return NULL;
+ }
+
+ err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
+ of_node_put(regs);
+ if (err < 0) {
+ dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
+ return NULL;
+ }
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ for (i = 0; i < num; i++) {
+ uintptr_t id;
+ if (!tps6586x_matches[i].init_data)
+ continue;
+
+ pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
+ id = (uintptr_t)tps6586x_matches[i].driver_data;
+ if (id == TPS6586X_ID_SYS)
+ sys_rail = pdata->reg_init_data[i]->constraints.name;
+
+ if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
+ pdata->reg_init_data[i]->supply_regulator = sys_rail;
+ }
+ *tps6586x_reg_matches = tps6586x_matches;
+ return pdata;
+}
+#else
+static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
+ struct platform_device *pdev,
+ struct of_regulator_match **tps6586x_reg_matches)
+{
+ *tps6586x_reg_matches = NULL;
+ return NULL;
+}
+#endif
+
+static int tps6586x_regulator_probe(struct platform_device *pdev)
+{
+ struct tps6586x_regulator *ri = NULL;
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+ struct regulator_init_data *reg_data;
+ struct tps6586x_platform_data *pdata;
+ struct of_regulator_match *tps6586x_reg_matches = NULL;
+ int version;
+ int id;
+ int err;
+
+ dev_dbg(&pdev->dev, "Probing regulator\n");
+
+ pdata = dev_get_platdata(pdev->dev.parent);
+ if ((!pdata) && (pdev->dev.parent->of_node))
+ pdata = tps6586x_parse_regulator_dt(pdev,
+ &tps6586x_reg_matches);
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "Platform data not available, exiting\n");
+ return -ENODEV;
+ }
+
+ version = tps6586x_get_version(pdev->dev.parent);
+
+ for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
+ reg_data = pdata->reg_init_data[id];
+
+ ri = find_regulator_info(id, version);
+
+ if (!ri) {
+ dev_err(&pdev->dev, "invalid regulator ID specified\n");
+ return -EINVAL;
+ }
+
+ err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
+ if (err) {
+ dev_err(&pdev->dev,
+ "regulator %d preinit failed, e %d\n", id, err);
+ return err;
+ }
+
+ config.dev = pdev->dev.parent;
+ config.init_data = reg_data;
+ config.driver_data = ri;
+
+ if (tps6586x_reg_matches)
+ config.of_node = tps6586x_reg_matches[id].of_node;
+
+ rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ ri->desc.name);
+ return PTR_ERR(rdev);
+ }
+
+ if (reg_data) {
+ err = tps6586x_regulator_set_slew_rate(pdev, id,
+ reg_data);
+ if (err < 0) {
+ dev_err(&pdev->dev,
+ "Slew rate config failed, e %d\n", err);
+ return err;
+ }
+ }
+ }
+
+ platform_set_drvdata(pdev, rdev);
+ return 0;
+}
+
+static struct platform_driver tps6586x_regulator_driver = {
+ .driver = {
+ .name = "tps6586x-regulator",
+ },
+ .probe = tps6586x_regulator_probe,
+};
+
+static int __init tps6586x_regulator_init(void)
+{
+ return platform_driver_register(&tps6586x_regulator_driver);
+}
+subsys_initcall(tps6586x_regulator_init);
+
+static void __exit tps6586x_regulator_exit(void)
+{
+ platform_driver_unregister(&tps6586x_regulator_driver);
+}
+module_exit(tps6586x_regulator_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
+MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
+MODULE_ALIAS("platform:tps6586x-regulator");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 02:08:48 +0000