1 files changed, 150 insertions, 0 deletions

diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
new file mode 100644
index 000000000000..001ad554ac62
--- /dev/null
+++ b/drivers/regulator/tps65090-regulator.c
@@ -0,0 +1,150 @@
+/*
+ * Regulator driver for tps65090 power management chip.
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
+
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/tps65090.h>
+#include <linux/regulator/tps65090-regulator.h>
+
+struct tps65090_regulator {
+        int             id;
+        /* used by regulator core */
+        struct regulator_desc   desc;
+
+        /* Device */
+        struct device           *dev;
+};
+
+static struct regulator_ops tps65090_ops = {
+        .enable = regulator_enable_regmap,
+        .disable = regulator_disable_regmap,
+        .is_enabled = regulator_is_enabled_regmap,
+};
+
+#define tps65090_REG(_id)                               \
+{                                                       \
+        .id             = TPS65090_ID_##_id,            \
+        .desc = {                                       \
+                .name = tps65090_rails(_id),            \
+                .id = TPS65090_ID_##_id,                \
+                .ops = &tps65090_ops,                   \
+                .type = REGULATOR_VOLTAGE,              \
+                .owner = THIS_MODULE,                   \
+                .enable_reg = (TPS65090_ID_##_id) + 12, \
+                .enable_mask = BIT(0),                  \
+        },                                              \
+}
+
+static struct tps65090_regulator TPS65090_regulator[] = {
+        tps65090_REG(DCDC1),
+        tps65090_REG(DCDC2),
+        tps65090_REG(DCDC3),
+        tps65090_REG(FET1),
+        tps65090_REG(FET2),
+        tps65090_REG(FET3),
+        tps65090_REG(FET4),
+        tps65090_REG(FET5),
+        tps65090_REG(FET6),
+        tps65090_REG(FET7),
+};
+
+static inline struct tps65090_regulator *find_regulator_info(int id)
+{
+        struct tps65090_regulator *ri;
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(TPS65090_regulator); i++) {
+                ri = &TPS65090_regulator[i];
+                if (ri->desc.id == id)
+                        return ri;
+        }
+        return NULL;
+}
+
+static int __devinit tps65090_regulator_probe(struct platform_device *pdev)
+{
+        struct tps65090 *tps65090_mfd = dev_get_drvdata(pdev->dev.parent);
+        struct tps65090_regulator *ri = NULL;
+        struct regulator_config config = { };
+        struct regulator_dev *rdev;
+        struct tps65090_regulator_platform_data *tps_pdata;
+        int id = pdev->id;
+
+        dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
+
+        ri = find_regulator_info(id);
+        if (ri == NULL) {
+                dev_err(&pdev->dev, "invalid regulator ID specified\n");
+                return -EINVAL;
+        }
+        tps_pdata = pdev->dev.platform_data;
+        ri->dev = &pdev->dev;
+
+        config.dev = &pdev->dev;
+        config.init_data = &tps_pdata->regulator;
+        config.driver_data = ri;
+        config.regmap = tps65090_mfd->rmap;
+
+        rdev = regulator_register(&ri->desc, &config);
+        if (IS_ERR(rdev)) {
+                dev_err(&pdev->dev, "failed to register regulator %s\n",
+                                ri->desc.name);
+                return PTR_ERR(rdev);
+        }
+
+        platform_set_drvdata(pdev, rdev);
+        return 0;
+}
+
+static int __devexit tps65090_regulator_remove(struct platform_device *pdev)
+{
+        struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+        regulator_unregister(rdev);
+        return 0;
+}
+
+static struct platform_driver tps65090_regulator_driver = {
+        .driver = {
+                .name   = "tps65090-regulator",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = tps65090_regulator_probe,
+        .remove         = __devexit_p(tps65090_regulator_remove),
+};
+
+static int __init tps65090_regulator_init(void)
+{
+        return platform_driver_register(&tps65090_regulator_driver);
+}
+subsys_initcall(tps65090_regulator_init);
+
+static void __exit tps65090_regulator_exit(void)
+{
+        platform_driver_unregister(&tps65090_regulator_driver);
+}
+module_exit(tps65090_regulator_exit);
+
+MODULE_DESCRIPTION("tps65090 regulator driver");
+MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
+MODULE_LICENSE("GPL v2");