This patch prepares support for other devices in the act88xx family of PMUs manufactured by Active-Semi. http://www.active-semi.com/products/power-management-units/act88xx/ Signed-off-by: Beniamino Galvani <b.galvani@xxxxxxxxx> Tested-by: Wenyou Yang <wenyou.yang@xxxxxxxxx> --- drivers/regulator/act8865-regulator.c | 211 +++++++++++++-------------------- include/linux/regulator/act8865.h | 6 +- 2 files changed, 88 insertions(+), 129 deletions(-) diff --git a/drivers/regulator/act8865-regulator.c b/drivers/regulator/act8865-regulator.c index 52d1b6c..b26eaf7 100644 --- a/drivers/regulator/act8865-regulator.c +++ b/drivers/regulator/act8865-regulator.c @@ -1,6 +1,7 @@ /* - * act8865-regulator.c - Voltage regulation for the active-semi ACT8865 - * http://www.active-semi.com/sheets/ACT8865_Datasheet.pdf + * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs + * + * http://www.active-semi.com/products/power-management-units/act88xx/ * * Copyright (C) 2013 Atmel Corporation * @@ -70,7 +71,7 @@ static const struct regmap_config act8865_regmap_config = { .val_bits = 8, }; -static const struct regulator_linear_range act8865_volatge_ranges[] = { +static const struct regulator_linear_range act8865_voltage_ranges[] = { REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000), REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000), REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000), @@ -86,110 +87,35 @@ static struct regulator_ops act8865_ops = { .is_enabled = regulator_is_enabled_regmap, }; -static const struct regulator_desc act8865_reg[] = { - { - .name = "DCDC_REG1", - .id = ACT8865_ID_DCDC1, - .ops = &act8865_ops, - .type = REGULATOR_VOLTAGE, - .n_voltages = ACT8865_VOLTAGE_NUM, - .linear_ranges = act8865_volatge_ranges, - .n_linear_ranges = ARRAY_SIZE(act8865_volatge_ranges), - .vsel_reg = ACT8865_DCDC1_VSET1, - .vsel_mask = ACT8865_VSEL_MASK, - .enable_reg = ACT8865_DCDC1_CTRL, - .enable_mask = ACT8865_ENA, - .owner = THIS_MODULE, - }, - { - .name = "DCDC_REG2", - .id = ACT8865_ID_DCDC2, - .ops = &act8865_ops, - .type = REGULATOR_VOLTAGE, - .n_voltages = ACT8865_VOLTAGE_NUM, - .linear_ranges = act8865_volatge_ranges, - .n_linear_ranges = ARRAY_SIZE(act8865_volatge_ranges), - .vsel_reg = ACT8865_DCDC2_VSET1, - .vsel_mask = ACT8865_VSEL_MASK, - .enable_reg = ACT8865_DCDC2_CTRL, - .enable_mask = ACT8865_ENA, - .owner = THIS_MODULE, - }, - { - .name = "DCDC_REG3", - .id = ACT8865_ID_DCDC3, - .ops = &act8865_ops, - .type = REGULATOR_VOLTAGE, - .n_voltages = ACT8865_VOLTAGE_NUM, - .linear_ranges = act8865_volatge_ranges, - .n_linear_ranges = ARRAY_SIZE(act8865_volatge_ranges), - .vsel_reg = ACT8865_DCDC3_VSET1, - .vsel_mask = ACT8865_VSEL_MASK, - .enable_reg = ACT8865_DCDC3_CTRL, - .enable_mask = ACT8865_ENA, - .owner = THIS_MODULE, - }, - { - .name = "LDO_REG1", - .id = ACT8865_ID_LDO1, - .ops = &act8865_ops, - .type = REGULATOR_VOLTAGE, - .n_voltages = ACT8865_VOLTAGE_NUM, - .linear_ranges = act8865_volatge_ranges, - .n_linear_ranges = ARRAY_SIZE(act8865_volatge_ranges), - .vsel_reg = ACT8865_LDO1_VSET, - .vsel_mask = ACT8865_VSEL_MASK, - .enable_reg = ACT8865_LDO1_CTRL, - .enable_mask = ACT8865_ENA, - .owner = THIS_MODULE, - }, - { - .name = "LDO_REG2", - .id = ACT8865_ID_LDO2, - .ops = &act8865_ops, - .type = REGULATOR_VOLTAGE, - .n_voltages = ACT8865_VOLTAGE_NUM, - .linear_ranges = act8865_volatge_ranges, - .n_linear_ranges = ARRAY_SIZE(act8865_volatge_ranges), - .vsel_reg = ACT8865_LDO2_VSET, - .vsel_mask = ACT8865_VSEL_MASK, - .enable_reg = ACT8865_LDO2_CTRL, - .enable_mask = ACT8865_ENA, - .owner = THIS_MODULE, - }, - { - .name = "LDO_REG3", - .id = ACT8865_ID_LDO3, - .ops = &act8865_ops, - .type = REGULATOR_VOLTAGE, - .n_voltages = ACT8865_VOLTAGE_NUM, - .linear_ranges = act8865_volatge_ranges, - .n_linear_ranges = ARRAY_SIZE(act8865_volatge_ranges), - .vsel_reg = ACT8865_LDO3_VSET, - .vsel_mask = ACT8865_VSEL_MASK, - .enable_reg = ACT8865_LDO3_CTRL, - .enable_mask = ACT8865_ENA, - .owner = THIS_MODULE, - }, - { - .name = "LDO_REG4", - .id = ACT8865_ID_LDO4, - .ops = &act8865_ops, - .type = REGULATOR_VOLTAGE, - .n_voltages = ACT8865_VOLTAGE_NUM, - .linear_ranges = act8865_volatge_ranges, - .n_linear_ranges = ARRAY_SIZE(act8865_volatge_ranges), - .vsel_reg = ACT8865_LDO4_VSET, - .vsel_mask = ACT8865_VSEL_MASK, - .enable_reg = ACT8865_LDO4_CTRL, - .enable_mask = ACT8865_ENA, - .owner = THIS_MODULE, - }, +#define ACT88xx_REG(_name, _family, _id, _vsel_reg) \ + [_family##_ID_##_id] = { \ + .name = _name, \ + .id = _family##_ID_##_id, \ + .type = REGULATOR_VOLTAGE, \ + .ops = &act8865_ops, \ + .n_voltages = ACT8865_VOLTAGE_NUM, \ + .linear_ranges = act8865_voltage_ranges, \ + .n_linear_ranges = ARRAY_SIZE(act8865_voltage_ranges), \ + .vsel_reg = _family##_##_id##_##_vsel_reg, \ + .vsel_mask = ACT8865_VSEL_MASK, \ + .enable_reg = _family##_##_id##_CTRL, \ + .enable_mask = ACT8865_ENA, \ + .owner = THIS_MODULE, \ + } + +static const struct regulator_desc act8865_regulators[] = { + ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1), + ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1), + ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1), + ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET), + ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET), + ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET), + ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET), }; #ifdef CONFIG_OF static const struct of_device_id act8865_dt_ids[] = { - { .compatible = "active-semi,act8865" }, + { .compatible = "active-semi,act8865", .data = (void *)ACT8865 }, { } }; MODULE_DEVICE_TABLE(of, act8865_dt_ids); @@ -206,7 +132,9 @@ static struct of_regulator_match act8865_matches[] = { static int act8865_pdata_from_dt(struct device *dev, struct device_node **of_node, - struct act8865_platform_data *pdata) + struct act8865_platform_data *pdata, + struct of_regulator_match *matches, + int num_matches) { int matched, i; struct device_node *np; @@ -218,26 +146,25 @@ static int act8865_pdata_from_dt(struct device *dev, return -EINVAL; } - matched = of_regulator_match(dev, np, - act8865_matches, ARRAY_SIZE(act8865_matches)); + matched = of_regulator_match(dev, np, matches, num_matches); of_node_put(np); if (matched <= 0) return matched; pdata->regulators = devm_kzalloc(dev, - sizeof(struct act8865_regulator_data) * - ARRAY_SIZE(act8865_matches), GFP_KERNEL); + sizeof(struct act8865_regulator_data) * + num_matches, GFP_KERNEL); if (!pdata->regulators) return -ENOMEM; - pdata->num_regulators = ARRAY_SIZE(act8865_matches); + pdata->num_regulators = num_matches; regulator = pdata->regulators; - for (i = 0; i < ARRAY_SIZE(act8865_matches); i++) { + for (i = 0; i < num_matches; i++) { regulator->id = i; - regulator->name = act8865_matches[i].name; - regulator->platform_data = act8865_matches[i].init_data; - of_node[i] = act8865_matches[i].of_node; + regulator->name = matches[i].name; + regulator->platform_data = matches[i].init_data; + of_node[i] = matches[i].of_node; regulator++; } @@ -269,34 +196,59 @@ static struct regulator_init_data } static int act8865_pmic_probe(struct i2c_client *client, - const struct i2c_device_id *i2c_id) + const struct i2c_device_id *i2c_id) { - struct regulator_dev *rdev; + static const struct regulator_desc *regulators; + struct act8865_platform_data pdata_of, *pdata; + struct of_regulator_match *matches; struct device *dev = &client->dev; - struct act8865_platform_data *pdata = dev_get_platdata(dev); - struct regulator_config config = { }; + struct device_node **of_node; + int i, ret, num_regulators; struct act8865 *act8865; - struct device_node *of_node[ACT8865_REG_NUM]; - int i; - int ret; + unsigned long type; + + pdata = dev_get_platdata(dev); if (dev->of_node && !pdata) { const struct of_device_id *id; - struct act8865_platform_data pdata_of; id = of_match_device(of_match_ptr(act8865_dt_ids), dev); if (!id) return -ENODEV; - ret = act8865_pdata_from_dt(dev, of_node, &pdata_of); + type = (unsigned long) id->data; + } else { + type = i2c_id->driver_data; + } + + switch (type) { + case ACT8865: + matches = act8865_matches; + regulators = act8865_regulators; + num_regulators = ARRAY_SIZE(act8865_regulators); + break; + default: + dev_err(dev, "invalid device id %lu\n", type); + return -EINVAL; + } + + of_node = devm_kzalloc(dev, sizeof(struct device_node *) * + num_regulators, GFP_KERNEL); + if (!of_node) + return -ENOMEM; + + if (dev->of_node && !pdata) { + ret = act8865_pdata_from_dt(dev, of_node, &pdata_of, matches, + num_regulators); if (ret < 0) return ret; pdata = &pdata_of; } - if (pdata->num_regulators > ACT8865_REG_NUM) { - dev_err(dev, "Too many regulators found!\n"); + if (pdata->num_regulators > num_regulators) { + dev_err(dev, "too many regulators: %d\n", + pdata->num_regulators); return -EINVAL; } @@ -313,8 +265,10 @@ static int act8865_pmic_probe(struct i2c_client *client, } /* Finally register devices */ - for (i = 0; i < ACT8865_REG_NUM; i++) { - const struct regulator_desc *desc = &act8865_reg[i]; + for (i = 0; i < num_regulators; i++) { + const struct regulator_desc *desc = ®ulators[i]; + struct regulator_config config = { }; + struct regulator_dev *rdev; config.dev = dev; config.init_data = act8865_get_init_data(desc->id, pdata); @@ -330,12 +284,13 @@ static int act8865_pmic_probe(struct i2c_client *client, } i2c_set_clientdata(client, act8865); + devm_kfree(dev, of_node); return 0; } static const struct i2c_device_id act8865_ids[] = { - { "act8865", 0 }, + { .name = "act8865", .driver_data = ACT8865 }, { }, }; MODULE_DEVICE_TABLE(i2c, act8865_ids); @@ -351,6 +306,6 @@ static struct i2c_driver act8865_pmic_driver = { module_i2c_driver(act8865_pmic_driver); -MODULE_DESCRIPTION("active-semi act8865 voltage regulator driver"); +MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver"); MODULE_AUTHOR("Wenyou Yang <wenyou.yang@xxxxxxxxx>"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/regulator/act8865.h b/include/linux/regulator/act8865.h index 49206c1..b49be81 100644 --- a/include/linux/regulator/act8865.h +++ b/include/linux/regulator/act8865.h @@ -1,5 +1,5 @@ /* - * act8865.h -- Voltage regulation for the active-semi act8865 + * act8865.h -- Voltage regulation for active-semi act88xx PMUs * * Copyright (C) 2013 Atmel Corporation. * @@ -29,6 +29,10 @@ enum { ACT8865_REG_NUM, }; +enum { + ACT8865, +}; + /** * act8865_regulator_data - regulator data * @id: regulator id -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
