lis3lv02d: make regulator API usage unconditional
The regulator API contains a range of features for stubbing itself out when not in use and for transparently restricting the actual effect of regulator API calls where they can't be supported on a particular system so that drivers don't need to individually implement this. Simplify the driver slightly by making use of this idiom. The only in tree user is ecovec24 which does not use the regulator API. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Éric Piel <eric.piel@tremplin-utc.net> Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -79,8 +79,7 @@ static int lis3_i2c_init(struct lis3lv02d *lis3)
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u8 reg;
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int ret;
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if (lis3->reg_ctrl)
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lis3_reg_ctrl(lis3, LIS3_REG_ON);
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lis3_reg_ctrl(lis3, LIS3_REG_ON);
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lis3->read(lis3, WHO_AM_I, ®);
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if (reg != lis3->whoami)
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@ -106,10 +105,6 @@ static int __devinit lis3lv02d_i2c_probe(struct i2c_client *client,
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struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
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if (pdata) {
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/* Regulator control is optional */
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if (pdata->driver_features & LIS3_USE_REGULATOR_CTRL)
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lis3_dev.reg_ctrl = lis3_reg_ctrl;
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if ((pdata->driver_features & LIS3_USE_BLOCK_READ) &&
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(i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_I2C_BLOCK)))
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@ -131,15 +126,13 @@ static int __devinit lis3lv02d_i2c_probe(struct i2c_client *client,
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goto fail;
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}
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if (lis3_dev.reg_ctrl) {
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lis3_dev.regulators[0].supply = reg_vdd;
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lis3_dev.regulators[1].supply = reg_vdd_io;
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ret = regulator_bulk_get(&client->dev,
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ARRAY_SIZE(lis3_dev.regulators),
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lis3_dev.regulators);
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if (ret < 0)
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goto fail;
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}
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lis3_dev.regulators[0].supply = reg_vdd;
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lis3_dev.regulators[1].supply = reg_vdd_io;
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ret = regulator_bulk_get(&client->dev,
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ARRAY_SIZE(lis3_dev.regulators),
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lis3_dev.regulators);
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if (ret < 0)
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goto fail;
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lis3_dev.pdata = pdata;
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lis3_dev.bus_priv = client;
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@ -153,13 +146,11 @@ static int __devinit lis3lv02d_i2c_probe(struct i2c_client *client,
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i2c_set_clientdata(client, &lis3_dev);
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/* Provide power over the init call */
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if (lis3_dev.reg_ctrl)
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lis3_reg_ctrl(&lis3_dev, LIS3_REG_ON);
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lis3_reg_ctrl(&lis3_dev, LIS3_REG_ON);
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ret = lis3lv02d_init_device(&lis3_dev);
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if (lis3_dev.reg_ctrl)
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lis3_reg_ctrl(&lis3_dev, LIS3_REG_OFF);
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lis3_reg_ctrl(&lis3_dev, LIS3_REG_OFF);
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if (ret)
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goto fail2;
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@ -185,9 +176,8 @@ static int __devexit lis3lv02d_i2c_remove(struct i2c_client *client)
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lis3lv02d_joystick_disable(lis3);
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lis3lv02d_remove_fs(&lis3_dev);
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if (lis3_dev.reg_ctrl)
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regulator_bulk_free(ARRAY_SIZE(lis3->regulators),
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lis3_dev.regulators);
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regulator_bulk_free(ARRAY_SIZE(lis3->regulators),
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lis3_dev.regulators);
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return 0;
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}
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@ -113,7 +113,6 @@ struct lis3lv02d_platform_data {
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s8 axis_x;
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s8 axis_y;
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s8 axis_z;
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#define LIS3_USE_REGULATOR_CTRL 0x01
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#define LIS3_USE_BLOCK_READ 0x02
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u16 driver_features;
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int default_rate;
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