--- /dev/null
+/*
+ * ROHM BD9571MWV-M regulator driver
+ *
+ * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.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 TPS65086 driver
+ *
+ * NOTE: VD09 is missing
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+
+#include <linux/mfd/bd9571mwv.h>
+
+enum bd9571mwv_regulators { VD09, VD18, VD25, VD33, DVFS };
+
+#define BD9571MWV_REG(_name, _of, _id, _ops, _vr, _vm, _nv, _min, _step, _lmin)\
+ { \
+ .name = _name, \
+ .of_match = of_match_ptr(_of), \
+ .regulators_node = "regulators", \
+ .id = _id, \
+ .ops = &_ops, \
+ .n_voltages = _nv, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = _vr, \
+ .vsel_mask = _vm, \
+ .min_uV = _min, \
+ .uV_step = _step, \
+ .linear_min_sel = _lmin, \
+ }
+
+int bd9571mwv_avs_get_moni_state(struct regulator_dev *rdev)
+{
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(rdev->regmap, BD9571MWV_AVS_SET_MONI, &val);
+ if (ret != 0)
+ return ret;
+
+ return val & BD9571MWV_AVS_SET_MONI_MASK;
+}
+
+int bd9571mwv_avs_set_voltage_sel_regmap(struct regulator_dev *rdev,
+ unsigned int sel)
+{
+ int ret;
+
+ ret = bd9571mwv_avs_get_moni_state(rdev);
+ if (ret < 0)
+ return ret;
+
+ return regmap_write_bits(rdev->regmap, BD9571MWV_AVS_VD09_VID(ret),
+ rdev->desc->vsel_mask, sel);
+}
+
+int bd9571mwv_avs_get_voltage_sel_regmap(struct regulator_dev *rdev)
+{
+ unsigned int val;
+ int ret;
+
+ ret = bd9571mwv_avs_get_moni_state(rdev);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_read(rdev->regmap, BD9571MWV_AVS_VD09_VID(ret), &val);
+ if (ret != 0)
+ return ret;
+
+ val &= rdev->desc->vsel_mask;
+ val >>= ffs(rdev->desc->vsel_mask) - 1;
+
+ return val;
+}
+
+int bd9571mwv_reg_set_voltage_sel_regmap(struct regulator_dev *rdev,
+ unsigned int sel)
+{
+ return regmap_write_bits(rdev->regmap, BD9571MWV_DVFS_SETVID,
+ rdev->desc->vsel_mask, sel);
+}
+
+/* Operations permitted on AVS voltage regulator */
+static struct regulator_ops avs_ops = {
+ .set_voltage_sel = bd9571mwv_avs_set_voltage_sel_regmap,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = bd9571mwv_avs_get_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+};
+
+/* Operations permitted on voltage regulators */
+static struct regulator_ops reg_ops = {
+ .set_voltage_sel = bd9571mwv_reg_set_voltage_sel_regmap,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+};
+
+/* Operations permitted on voltage monitors */
+static struct regulator_ops vid_ops = {
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+};
+
+static struct regulator_desc regulators[] = {
+ BD9571MWV_REG("VD09", "vd09", VD09, avs_ops, 0, 0x7f,
+ 0x80, 600000, 10000, 0x3c),
+ BD9571MWV_REG("VD18", "vd18", VD18, vid_ops, BD9571MWV_VD18_VID, 0xf,
+ 16, 1625000, 25000, 0),
+ BD9571MWV_REG("VD25", "vd25", VD25, vid_ops, BD9571MWV_VD25_VID, 0xf,
+ 16, 2150000, 50000, 0),
+ BD9571MWV_REG("VD33", "vd33", VD33, vid_ops, BD9571MWV_VD33_VID, 0xf,
+ 11, 2800000, 100000, 0),
+ BD9571MWV_REG("DVFS", "dvfs", DVFS, reg_ops,
+ BD9571MWV_DVFS_MONIVDAC, 0x7f,
+ 0x80, 600000, 10000, 0x3c),
+};
+
+static int bd9571mwv_regulator_probe(struct platform_device *pdev)
+{
+ struct bd9571mwv *bd = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+ int i;
+
+ platform_set_drvdata(pdev, bd);
+
+ config.dev = &pdev->dev;
+ config.dev->of_node = bd->dev->of_node;
+ config.driver_data = bd;
+ config.regmap = bd->regmap;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+ rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(bd->dev, "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id bd9571mwv_regulator_id_table[] = {
+ { "bd9571mwv-regulator", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, bd9571mwv_regulator_id_table);
+
+static struct platform_driver bd9571mwv_regulator_driver = {
+ .driver = {
+ .name = "bd9571mwv-regulator",
+ },
+ .probe = bd9571mwv_regulator_probe,
+ .id_table = bd9571mwv_regulator_id_table,
+};
+module_platform_driver(bd9571mwv_regulator_driver);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut+renesas@gmail.com>");
+MODULE_DESCRIPTION("BD9571MWV Regulator driver");
+MODULE_LICENSE("GPL v2");
projects / mirror_ubuntu-hirsute-kernel.git / commitdiff