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authorAndrew F. Davis <afd@ti.com>2016-01-25 18:43:46 +0300
committerLee Jones <lee.jones@linaro.org>2016-02-11 19:31:06 +0300
commit33f9d8c0b49c1e63d6efc6e60a52afcf85f5de65 (patch)
tree7069c77515954927e93aecb054503f4babd94837 /drivers/regulator/tps65912-regulator.c
parent796f5692daac4ea47fa5252af742976cd1955f0b (diff)
downloadlinux-33f9d8c0b49c1e63d6efc6e60a52afcf85f5de65.tar.xz
regulator: tps65912: Add regulator driver for the TPS65912 PMIC
This patch adds support for TPS65912 PMIC regulators. The regulators set consists of 4 DCDCs and 10 LDOs. The output voltages are configurable and are meant to supply power to the main processor and other components. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/regulator/tps65912-regulator.c')
-rw-r--r--drivers/regulator/tps65912-regulator.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/drivers/regulator/tps65912-regulator.c b/drivers/regulator/tps65912-regulator.c
new file mode 100644
index 000000000000..a4921a70da55
--- /dev/null
+++ b/drivers/regulator/tps65912-regulator.c
@@ -0,0 +1,168 @@
+/*
+ * Regulator driver for TI TPS65912x PMICs
+ *
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ * Andrew F. Davis <afd@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65218 driver and the previous TPS65912 driver by
+ * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+
+#include <linux/mfd/tps65912.h>
+
+enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
+ LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
+
+#define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr) \
+ [_id] = { \
+ .name = _name, \
+ .of_match = _of_match, \
+ .regulators_node = "regulators", \
+ .id = _id, \
+ .ops = &_ops, \
+ .n_voltages = 64, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = _vr, \
+ .vsel_mask = 0x3f, \
+ .enable_reg = _er, \
+ .enable_mask = BIT(7), \
+ .volt_table = NULL, \
+ .linear_ranges = _lr, \
+ .n_linear_ranges = ARRAY_SIZE(_lr), \
+ }
+
+static const struct regulator_linear_range tps65912_dcdc_ranges[] = {
+ REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
+};
+
+static const struct regulator_linear_range tps65912_ldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
+ REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
+ REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
+};
+
+/* Operations permitted on DCDCx */
+static struct regulator_ops tps65912_ops_dcdc = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+};
+
+/* Operations permitted on LDOx */
+static struct regulator_ops tps65912_ops_ldo = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+};
+
+static const struct regulator_desc regulators[] = {
+ TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
+ TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
+ tps65912_dcdc_ranges),
+ TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
+ TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
+ tps65912_dcdc_ranges),
+ TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
+ TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
+ tps65912_dcdc_ranges),
+ TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
+ TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
+ tps65912_dcdc_ranges),
+ TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
+ TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
+ TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
+ TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
+ TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
+ TPS65912_LDO5, TPS65912_LDO5,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
+ TPS65912_LDO6, TPS65912_LDO6,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
+ TPS65912_LDO7, TPS65912_LDO7,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
+ TPS65912_LDO8, TPS65912_LDO8,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
+ TPS65912_LDO9, TPS65912_LDO9,
+ tps65912_ldo_ranges),
+ TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
+ TPS65912_LDO10, TPS65912_LDO10,
+ tps65912_ldo_ranges),
+};
+
+static int tps65912_regulator_probe(struct platform_device *pdev)
+{
+ struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+ int i;
+
+ platform_set_drvdata(pdev, tps);
+
+ config.dev = &pdev->dev;
+ config.driver_data = tps;
+ config.dev->of_node = tps->dev->of_node;
+ config.regmap = tps->regmap;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+ rdev = devm_regulator_register(&pdev->dev, &regulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(tps->dev, "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id tps65912_regulator_id_table[] = {
+ { "tps65912-regulator", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
+
+static struct platform_driver tps65912_regulator_driver = {
+ .driver = {
+ .name = "tps65912-regulator",
+ },
+ .probe = tps65912_regulator_probe,
+ .id_table = tps65912_regulator_id_table,
+};
+module_platform_driver(tps65912_regulator_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
+MODULE_LICENSE("GPL v2");