diff options
Diffstat (limited to 'target/linux/generic/patches-3.10/065-iio_ad799x_backport_fixes.patch')
| -rw-r--r-- | target/linux/generic/patches-3.10/065-iio_ad799x_backport_fixes.patch | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/target/linux/generic/patches-3.10/065-iio_ad799x_backport_fixes.patch b/target/linux/generic/patches-3.10/065-iio_ad799x_backport_fixes.patch deleted file mode 100644 index 41f88bf586..0000000000 --- a/target/linux/generic/patches-3.10/065-iio_ad799x_backport_fixes.patch +++ /dev/null @@ -1,157 +0,0 @@ -Backport essential fixes from 3.15 - -From Linux 3.10 on this driver required platform data to load, which makes it -unusable in OpenWRT. This commit backports the following fixes: - * Move to regulator framework for scaling - * Set endianness of the ADC to Big endian - * Fix device-removal path -This commit should not be moved to newer kernel versions! - -Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> ---- ---- a/drivers/staging/iio/adc/ad799x_core.c -+++ b/drivers/staging/iio/adc/ad799x_core.c -@@ -163,7 +163,6 @@ static int ad799x_read_raw(struct iio_de - { - int ret; - struct ad799x_state *st = iio_priv(indio_dev); -- unsigned int scale_uv; - - switch (m) { - case IIO_CHAN_INFO_RAW: -@@ -180,10 +179,12 @@ static int ad799x_read_raw(struct iio_de - RES_MASK(chan->scan_type.realbits); - return IIO_VAL_INT; - case IIO_CHAN_INFO_SCALE: -- scale_uv = (st->int_vref_mv * 1000) >> chan->scan_type.realbits; -- *val = scale_uv / 1000; -- *val2 = (scale_uv % 1000) * 1000; -- return IIO_VAL_INT_PLUS_MICRO; -+ ret = regulator_get_voltage(st->vref); -+ if (ret < 0) -+ return ret; -+ *val = ret / 1000; -+ *val2 = chan->scan_type.realbits; -+ return IIO_VAL_FRACTIONAL_LOG2; - } - return -EINVAL; - } -@@ -474,7 +475,13 @@ static const struct iio_info ad7993_4_7_ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ - .scan_index = (_index), \ -- .scan_type = IIO_ST('u', _realbits, 16, 12 - (_realbits)), \ -+ .scan_type = { \ -+ .sign = 'u', \ -+ .realbits = (_realbits), \ -+ .storagebits = 16, \ -+ .shift = 12 - (_realbits), \ -+ .endianness = IIO_BE, \ -+ }, \ - .event_mask = (_evmask), \ - } - -@@ -584,7 +591,6 @@ static int ad799x_probe(struct i2c_clien - const struct i2c_device_id *id) - { - int ret; -- struct ad799x_platform_data *pdata = client->dev.platform_data; - struct ad799x_state *st; - struct iio_dev *indio_dev = iio_device_alloc(sizeof(*st)); - -@@ -601,17 +607,21 @@ static int ad799x_probe(struct i2c_clien - - /* TODO: Add pdata options for filtering and bit delay */ - -- if (!pdata) -- return -EINVAL; -- -- st->int_vref_mv = pdata->vref_mv; -- -- st->reg = regulator_get(&client->dev, "vcc"); -- if (!IS_ERR(st->reg)) { -- ret = regulator_enable(st->reg); -- if (ret) -- goto error_put_reg; -+ st->reg = devm_regulator_get(&client->dev, "vcc"); -+ if (IS_ERR(st->reg)) -+ return PTR_ERR(st->reg); -+ ret = regulator_enable(st->reg); -+ if (ret) -+ return ret; -+ st->vref = devm_regulator_get(&client->dev, "vref"); -+ if (IS_ERR(st->vref)) { -+ ret = PTR_ERR(st->vref); -+ goto error_disable_reg; - } -+ ret = regulator_enable(st->vref); -+ if (ret) -+ goto error_disable_reg; -+ - st->client = client; - - indio_dev->dev.parent = &client->dev; -@@ -624,7 +634,7 @@ static int ad799x_probe(struct i2c_clien - - ret = ad799x_register_ring_funcs_and_init(indio_dev); - if (ret) -- goto error_disable_reg; -+ goto error_disable_vref; - - if (client->irq > 0) { - ret = request_threaded_irq(client->irq, -@@ -648,12 +658,10 @@ error_free_irq: - free_irq(client->irq, indio_dev); - error_cleanup_ring: - ad799x_ring_cleanup(indio_dev); -+error_disable_vref: -+ regulator_disable(st->vref); - error_disable_reg: -- if (!IS_ERR(st->reg)) -- regulator_disable(st->reg); --error_put_reg: -- if (!IS_ERR(st->reg)) -- regulator_put(st->reg); -+ regulator_disable(st->reg); - iio_device_free(indio_dev); - - return ret; -@@ -669,10 +677,8 @@ static int ad799x_remove(struct i2c_clie - free_irq(client->irq, indio_dev); - - ad799x_ring_cleanup(indio_dev); -- if (!IS_ERR(st->reg)) { -- regulator_disable(st->reg); -- regulator_put(st->reg); -- } -+ regulator_disable(st->vref); -+ regulator_disable(st->reg); - kfree(st->rx_buf); - iio_device_free(indio_dev); - ---- a/drivers/staging/iio/adc/ad799x.h -+++ b/drivers/staging/iio/adc/ad799x.h -@@ -103,7 +103,7 @@ struct ad799x_state { - struct i2c_client *client; - const struct ad799x_chip_info *chip_info; - struct regulator *reg; -- u16 int_vref_mv; -+ struct regulator *vref; - unsigned id; - u16 config; - -@@ -111,14 +111,6 @@ struct ad799x_state { - unsigned int transfer_size; - }; - --/* -- * TODO: struct ad799x_platform_data needs to go into include/linux/iio -- */ -- --struct ad799x_platform_data { -- u16 vref_mv; --}; -- - #ifdef CONFIG_AD799X_RING_BUFFER - int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev); - void ad799x_ring_cleanup(struct iio_dev *indio_dev); |