kernel: remove linux 3.10 support

[openwrt/svn-archive/archive.git] / target / linux / generic / patches-3.10 / 065-iio_ad799x_backport_fixes.patch

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 (file)
index 41f88bf..0000000
--- 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);