drm/nv50: fix iommu errors caused by device reading from address 0
[safe/jmp/linux-2.6] / drivers / regulator / tps6507x-regulator.c
index ea44741..14b4576 100644 (file)
@@ -22,7 +22,6 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
-#include <linux/i2c.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/mfd/tps6507x.h>
@@ -104,22 +103,67 @@ struct tps_info {
        const u16 *table;
 };
 
+static const struct tps_info tps6507x_pmic_regs[] = {
+       {
+               .name = "VDCDC1",
+               .min_uV = 725000,
+               .max_uV = 3300000,
+               .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+               .table = VDCDCx_VSEL_table,
+       },
+       {
+               .name = "VDCDC2",
+               .min_uV = 725000,
+               .max_uV = 3300000,
+               .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+               .table = VDCDCx_VSEL_table,
+       },
+       {
+               .name = "VDCDC3",
+               .min_uV = 725000,
+               .max_uV = 3300000,
+               .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+               .table = VDCDCx_VSEL_table,
+       },
+       {
+               .name = "LDO1",
+               .min_uV = 1000000,
+               .max_uV = 3300000,
+               .table_len = ARRAY_SIZE(LDO1_VSEL_table),
+               .table = LDO1_VSEL_table,
+       },
+       {
+               .name = "LDO2",
+               .min_uV = 725000,
+               .max_uV = 3300000,
+               .table_len = ARRAY_SIZE(LDO2_VSEL_table),
+               .table = LDO2_VSEL_table,
+       },
+};
+
 struct tps6507x_pmic {
        struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
-       struct i2c_client *client;
+       struct tps6507x_dev *mfd;
        struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
        const struct tps_info *info[TPS6507X_NUM_REGULATOR];
        struct mutex io_lock;
 };
-
 static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
 {
-       return i2c_smbus_read_byte_data(tps->client, reg);
+       u8 val;
+       int err;
+
+       err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
+
+       if (err)
+               return err;
+
+       return val;
 }
 
 static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
 {
-       return i2c_smbus_write_byte_data(tps->client, reg, val);
+       return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
 }
 
 static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
@@ -130,7 +174,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
 
        data = tps6507x_pmic_read(tps, reg);
        if (data < 0) {
-               dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+               dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
                err = data;
                goto out;
        }
@@ -138,7 +182,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
        data |= mask;
        err = tps6507x_pmic_write(tps, reg, data);
        if (err)
-               dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+               dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
 
 out:
        mutex_unlock(&tps->io_lock);
@@ -153,7 +197,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
 
        data = tps6507x_pmic_read(tps, reg);
        if (data < 0) {
-               dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+               dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
                err = data;
                goto out;
        }
@@ -161,7 +205,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
        data &= ~mask;
        err = tps6507x_pmic_write(tps, reg, data);
        if (err)
-               dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+               dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
 
 out:
        mutex_unlock(&tps->io_lock);
@@ -176,7 +220,7 @@ static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
 
        data = tps6507x_pmic_read(tps, reg);
        if (data < 0)
-               dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+               dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
 
        mutex_unlock(&tps->io_lock);
        return data;
@@ -190,7 +234,7 @@ static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
 
        err = tps6507x_pmic_write(tps, reg, val);
        if (err < 0)
-               dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+               dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
 
        mutex_unlock(&tps->io_lock);
        return err;
@@ -483,11 +527,12 @@ static struct regulator_ops tps6507x_pmic_ldo_ops = {
        .list_voltage = tps6507x_pmic_ldo_list_voltage,
 };
 
-static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
-                                    const struct i2c_device_id *id)
+static __devinit
+int tps6507x_pmic_probe(struct platform_device *pdev)
 {
+       struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
        static int desc_id;
-       const struct tps_info *info = (void *)id->driver_data;
+       const struct tps_info *info = &tps6507x_pmic_regs[0];
        struct regulator_init_data *init_data;
        struct regulator_dev *rdev;
        struct tps6507x_pmic *tps;
@@ -495,16 +540,12 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
        int i;
        int error;
 
-       if (!i2c_check_functionality(client->adapter,
-                               I2C_FUNC_SMBUS_BYTE_DATA))
-               return -EIO;
-
        /**
         * tps_board points to pmic related constants
         * coming from the board-evm file.
         */
 
-       tps_board = dev_get_platdata(&client->dev);
+       tps_board = dev_get_platdata(tps6507x_dev->dev);
        if (!tps_board)
                return -EINVAL;
 
@@ -523,7 +564,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
        mutex_init(&tps->io_lock);
 
        /* common for all regulators */
-       tps->client = client;
+       tps->mfd = tps6507x_dev;
 
        for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
                /* Register the regulators */
@@ -537,10 +578,11 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
                tps->desc[i].owner = THIS_MODULE;
 
                rdev = regulator_register(&tps->desc[i],
-                                       &client->dev, init_data, tps);
+                                       tps6507x_dev->dev, init_data, tps);
                if (IS_ERR(rdev)) {
-                       dev_err(&client->dev, "failed to register %s\n",
-                               id->name);
+                       dev_err(tps6507x_dev->dev,
+                               "failed to register %s regulator\n",
+                               pdev->name);
                        error = PTR_ERR(rdev);
                        goto fail;
                }
@@ -549,7 +591,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
                tps->rdev[i] = rdev;
        }
 
-       i2c_set_clientdata(client, tps);
+       tps6507x_dev->pmic = tps;
 
        return 0;
 
@@ -567,14 +609,12 @@ fail:
  *
  * Unregister TPS driver as an i2c client device driver
  */
-static int __devexit tps6507x_pmic_remove(struct i2c_client *client)
+static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
 {
-       struct tps6507x_pmic *tps = i2c_get_clientdata(client);
+       struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
+       struct tps6507x_pmic *tps = tps6507x_dev->pmic;
        int i;
 
-       /* clear the client data in i2c */
-       i2c_set_clientdata(client, NULL);
-
        for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
                regulator_unregister(tps->rdev[i]);
 
@@ -583,59 +623,13 @@ static int __devexit tps6507x_pmic_remove(struct i2c_client *client)
        return 0;
 }
 
-static const struct tps_info tps6507x_pmic_regs[] = {
-       {
-               .name = "VDCDC1",
-               .min_uV = 725000,
-               .max_uV = 3300000,
-               .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
-               .table = VDCDCx_VSEL_table,
-       },
-       {
-               .name = "VDCDC2",
-               .min_uV = 725000,
-               .max_uV = 3300000,
-               .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
-               .table = VDCDCx_VSEL_table,
-       },
-       {
-               .name = "VDCDC3",
-               .min_uV = 725000,
-               .max_uV = 3300000,
-               .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
-               .table = VDCDCx_VSEL_table,
-       },
-       {
-               .name = "LDO1",
-               .min_uV = 1000000,
-               .max_uV = 3300000,
-               .table_len = ARRAY_SIZE(LDO1_VSEL_table),
-               .table = LDO1_VSEL_table,
-       },
-       {
-               .name = "LDO2",
-               .min_uV = 725000,
-               .max_uV = 3300000,
-               .table_len = ARRAY_SIZE(LDO2_VSEL_table),
-               .table = LDO2_VSEL_table,
-       },
-};
-
-static const struct i2c_device_id tps6507x_pmic_id[] = {
-       {.name = "tps6507x",
-       .driver_data = (unsigned long) tps6507x_pmic_regs,},
-       { },
-};
-MODULE_DEVICE_TABLE(i2c, tps6507x_pmic_id);
-
-static struct i2c_driver tps6507x_i2c_driver = {
+static struct platform_driver tps6507x_pmic_driver = {
        .driver = {
-               .name = "tps6507x",
+               .name = "tps6507x-pmic",
                .owner = THIS_MODULE,
        },
        .probe = tps6507x_pmic_probe,
        .remove = __devexit_p(tps6507x_pmic_remove),
-       .id_table = tps6507x_pmic_id,
 };
 
 /**
@@ -645,7 +639,7 @@ static struct i2c_driver tps6507x_i2c_driver = {
  */
 static int __init tps6507x_pmic_init(void)
 {
-       return i2c_add_driver(&tps6507x_i2c_driver);
+       return platform_driver_register(&tps6507x_pmic_driver);
 }
 subsys_initcall(tps6507x_pmic_init);
 
@@ -656,10 +650,11 @@ subsys_initcall(tps6507x_pmic_init);
  */
 static void __exit tps6507x_pmic_cleanup(void)
 {
-       i2c_del_driver(&tps6507x_i2c_driver);
+       platform_driver_unregister(&tps6507x_pmic_driver);
 }
 module_exit(tps6507x_pmic_cleanup);
 
 MODULE_AUTHOR("Texas Instruments");
 MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
 MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:tps6507x-pmic");