diff options
Diffstat (limited to 'drivers/iio/industrialio-backend.c')
| -rw-r--r-- | drivers/iio/industrialio-backend.c | 130 |
1 files changed, 104 insertions, 26 deletions
diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c index 20b3b5212da7..363281272035 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -230,7 +230,7 @@ void iio_backend_debugfs_add(struct iio_backend *back, debugfs_create_file("name", 0400, back_d, back, &iio_backend_debugfs_name_fops); } -EXPORT_SYMBOL_NS_GPL(iio_backend_debugfs_add, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_debugfs_add, "IIO_BACKEND"); /** * iio_backend_debugfs_print_chan_status - Print channel status @@ -256,7 +256,7 @@ ssize_t iio_backend_debugfs_print_chan_status(struct iio_backend *back, return iio_backend_op_call(back, debugfs_print_chan_status, chan, buf, len); } -EXPORT_SYMBOL_NS_GPL(iio_backend_debugfs_print_chan_status, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_debugfs_print_chan_status, "IIO_BACKEND"); /** * iio_backend_chan_enable - Enable a backend channel @@ -270,7 +270,7 @@ int iio_backend_chan_enable(struct iio_backend *back, unsigned int chan) { return iio_backend_op_call(back, chan_enable, chan); } -EXPORT_SYMBOL_NS_GPL(iio_backend_chan_enable, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_chan_enable, "IIO_BACKEND"); /** * iio_backend_chan_disable - Disable a backend channel @@ -284,7 +284,7 @@ int iio_backend_chan_disable(struct iio_backend *back, unsigned int chan) { return iio_backend_op_call(back, chan_disable, chan); } -EXPORT_SYMBOL_NS_GPL(iio_backend_chan_disable, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_chan_disable, "IIO_BACKEND"); static void __iio_backend_disable(void *back) { @@ -299,7 +299,7 @@ void iio_backend_disable(struct iio_backend *back) { __iio_backend_disable(back); } -EXPORT_SYMBOL_NS_GPL(iio_backend_disable, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_disable, "IIO_BACKEND"); /** * iio_backend_enable - Backend enable @@ -312,7 +312,7 @@ int iio_backend_enable(struct iio_backend *back) { return iio_backend_op_call(back, enable); } -EXPORT_SYMBOL_NS_GPL(iio_backend_enable, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_enable, "IIO_BACKEND"); /** * devm_iio_backend_enable - Device managed backend enable @@ -332,7 +332,7 @@ int devm_iio_backend_enable(struct device *dev, struct iio_backend *back) return devm_add_action_or_reset(dev, __iio_backend_disable, back); } -EXPORT_SYMBOL_NS_GPL(devm_iio_backend_enable, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(devm_iio_backend_enable, "IIO_BACKEND"); /** * iio_backend_data_format_set - Configure the channel data format @@ -354,7 +354,7 @@ int iio_backend_data_format_set(struct iio_backend *back, unsigned int chan, return iio_backend_op_call(back, data_format_set, chan, data); } -EXPORT_SYMBOL_NS_GPL(iio_backend_data_format_set, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_data_format_set, "IIO_BACKEND"); /** * iio_backend_data_source_set - Select data source @@ -376,7 +376,7 @@ int iio_backend_data_source_set(struct iio_backend *back, unsigned int chan, return iio_backend_op_call(back, data_source_set, chan, data); } -EXPORT_SYMBOL_NS_GPL(iio_backend_data_source_set, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_data_source_set, "IIO_BACKEND"); /** * iio_backend_set_sampling_freq - Set channel sampling rate @@ -392,7 +392,7 @@ int iio_backend_set_sampling_freq(struct iio_backend *back, unsigned int chan, { return iio_backend_op_call(back, set_sample_rate, chan, sample_rate_hz); } -EXPORT_SYMBOL_NS_GPL(iio_backend_set_sampling_freq, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_set_sampling_freq, "IIO_BACKEND"); /** * iio_backend_test_pattern_set - Configure a test pattern @@ -415,7 +415,7 @@ int iio_backend_test_pattern_set(struct iio_backend *back, return iio_backend_op_call(back, test_pattern_set, chan, pattern); } -EXPORT_SYMBOL_NS_GPL(iio_backend_test_pattern_set, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_test_pattern_set, "IIO_BACKEND"); /** * iio_backend_chan_status - Get the channel status @@ -434,7 +434,7 @@ int iio_backend_chan_status(struct iio_backend *back, unsigned int chan, { return iio_backend_op_call(back, chan_status, chan, error); } -EXPORT_SYMBOL_NS_GPL(iio_backend_chan_status, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_chan_status, "IIO_BACKEND"); /** * iio_backend_iodelay_set - Set digital I/O delay @@ -457,7 +457,7 @@ int iio_backend_iodelay_set(struct iio_backend *back, unsigned int lane, { return iio_backend_op_call(back, iodelay_set, lane, taps); } -EXPORT_SYMBOL_NS_GPL(iio_backend_iodelay_set, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_iodelay_set, "IIO_BACKEND"); /** * iio_backend_data_sample_trigger - Control when to sample data @@ -478,7 +478,7 @@ int iio_backend_data_sample_trigger(struct iio_backend *back, return iio_backend_op_call(back, data_sample_trigger, trigger); } -EXPORT_SYMBOL_NS_GPL(iio_backend_data_sample_trigger, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_data_sample_trigger, "IIO_BACKEND"); static void iio_backend_free_buffer(void *arg) { @@ -523,7 +523,7 @@ int devm_iio_backend_request_buffer(struct device *dev, return devm_add_action_or_reset(dev, iio_backend_free_buffer, pair); } -EXPORT_SYMBOL_NS_GPL(devm_iio_backend_request_buffer, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(devm_iio_backend_request_buffer, "IIO_BACKEND"); /** * iio_backend_read_raw - Read a channel attribute from a backend device. @@ -542,7 +542,7 @@ int iio_backend_read_raw(struct iio_backend *back, { return iio_backend_op_call(back, read_raw, chan, val, val2, mask); } -EXPORT_SYMBOL_NS_GPL(iio_backend_read_raw, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_read_raw, "IIO_BACKEND"); static struct iio_backend *iio_backend_from_indio_dev_parent(const struct device *dev) { @@ -604,7 +604,7 @@ ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private, return iio_backend_op_call(back, ext_info_get, private, chan, buf); } -EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_get, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_get, "IIO_BACKEND"); /** * iio_backend_ext_info_set - IIO ext_info write callback @@ -634,7 +634,7 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private, return iio_backend_op_call(back, ext_info_set, private, chan, buf, len); } -EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, "IIO_BACKEND"); /** * iio_backend_extend_chan_spec - Extend an IIO channel @@ -677,7 +677,7 @@ int iio_backend_extend_chan_spec(struct iio_backend *back, return 0; } -EXPORT_SYMBOL_NS_GPL(iio_backend_extend_chan_spec, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_extend_chan_spec, "IIO_BACKEND"); static void iio_backend_release(void *arg) { @@ -718,6 +718,84 @@ static int __devm_iio_backend_get(struct device *dev, struct iio_backend *back) return 0; } +/** + * iio_backend_ddr_enable - Enable interface DDR (Double Data Rate) mode + * @back: Backend device + * + * Enable DDR, data is generated by the IP at each front (raising and falling) + * of the bus clock signal. + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_ddr_enable(struct iio_backend *back) +{ + return iio_backend_op_call(back, ddr_enable); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_ddr_enable, "IIO_BACKEND"); + +/** + * iio_backend_ddr_disable - Disable interface DDR (Double Data Rate) mode + * @back: Backend device + * + * Disable DDR, setting into SDR mode (Single Data Rate). + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_ddr_disable(struct iio_backend *back) +{ + return iio_backend_op_call(back, ddr_disable); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_ddr_disable, "IIO_BACKEND"); + +/** + * iio_backend_data_stream_enable - Enable data stream + * @back: Backend device + * + * Enable data stream over the bus interface. + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_data_stream_enable(struct iio_backend *back) +{ + return iio_backend_op_call(back, data_stream_enable); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_data_stream_enable, "IIO_BACKEND"); + +/** + * iio_backend_data_stream_disable - Disable data stream + * @back: Backend device + * + * Disable data stream over the bus interface. + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_data_stream_disable(struct iio_backend *back) +{ + return iio_backend_op_call(back, data_stream_disable); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_data_stream_disable, "IIO_BACKEND"); + +/** + * iio_backend_data_transfer_addr - Set data address. + * @back: Backend device + * @address: Data register address + * + * Some devices may need to inform the backend about an address + * where to read or write the data. + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_data_transfer_addr(struct iio_backend *back, u32 address) +{ + return iio_backend_op_call(back, data_transfer_addr, address); +} +EXPORT_SYMBOL_NS_GPL(iio_backend_data_transfer_addr, "IIO_BACKEND"); + static struct iio_backend *__devm_iio_backend_fwnode_get(struct device *dev, const char *name, struct fwnode_handle *fwnode) { @@ -737,8 +815,8 @@ static struct iio_backend *__devm_iio_backend_fwnode_get(struct device *dev, con } fwnode_back = fwnode_find_reference(fwnode, "io-backends", index); - if (IS_ERR(fwnode)) - return dev_err_cast_probe(dev, fwnode, + if (IS_ERR(fwnode_back)) + return dev_err_cast_probe(dev, fwnode_back, "Cannot get Firmware reference\n"); guard(mutex)(&iio_back_lock); @@ -775,7 +853,7 @@ struct iio_backend *devm_iio_backend_get(struct device *dev, const char *name) { return __devm_iio_backend_fwnode_get(dev, name, dev_fwnode(dev)); } -EXPORT_SYMBOL_NS_GPL(devm_iio_backend_get, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(devm_iio_backend_get, "IIO_BACKEND"); /** * devm_iio_backend_fwnode_get - Device managed backend firmware node get @@ -794,7 +872,7 @@ struct iio_backend *devm_iio_backend_fwnode_get(struct device *dev, { return __devm_iio_backend_fwnode_get(dev, name, fwnode); } -EXPORT_SYMBOL_NS_GPL(devm_iio_backend_fwnode_get, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(devm_iio_backend_fwnode_get, "IIO_BACKEND"); /** * __devm_iio_backend_get_from_fwnode_lookup - Device managed fwnode backend device get @@ -829,7 +907,7 @@ __devm_iio_backend_get_from_fwnode_lookup(struct device *dev, return ERR_PTR(-EPROBE_DEFER); } -EXPORT_SYMBOL_NS_GPL(__devm_iio_backend_get_from_fwnode_lookup, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(__devm_iio_backend_get_from_fwnode_lookup, "IIO_BACKEND"); /** * iio_backend_get_priv - Get driver private data @@ -839,7 +917,7 @@ void *iio_backend_get_priv(const struct iio_backend *back) { return back->priv; } -EXPORT_SYMBOL_NS_GPL(iio_backend_get_priv, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(iio_backend_get_priv, "IIO_BACKEND"); static void iio_backend_unregister(void *arg) { @@ -888,7 +966,7 @@ int devm_iio_backend_register(struct device *dev, return devm_add_action_or_reset(dev, iio_backend_unregister, back); } -EXPORT_SYMBOL_NS_GPL(devm_iio_backend_register, IIO_BACKEND); +EXPORT_SYMBOL_NS_GPL(devm_iio_backend_register, "IIO_BACKEND"); MODULE_AUTHOR("Nuno Sa <[email protected]>"); MODULE_DESCRIPTION("Framework to handle complex IIO aggregate devices"); |