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Fri, 4 Oct 2024 10:11:14 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Fri, 4 Oct 2024 10:11:13 -0400 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.173]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 494EAps1001773; Fri, 4 Oct 2024 10:10:54 -0400 From: Antoniu Miclaus To: Jonathan Cameron , Lars-Peter Clausen , Michael Hennerich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Nuno Sa , Olivier Moysan , =?utf-8?q?Uwe_Kleine-K=C3=B6ni?= =?utf-8?q?g?= , Andy Shevchenko , David Lechner , Marcelo Schmitt , Mike Looijmans , =?utf-8?q?Jo=C3=A3o_Paulo_Gon?= =?utf-8?q?=C3=A7alves?= , Dumitru Ceclan , AngeloGioacchino Del Regno , Alisa-Dariana Roman , Sergiu Cuciurean , Dragos Bogdan , Antoniu Miclaus , , , , Subject: [PATCH v2 1/7] iio: backend: add API for interface get Date: Fri, 4 Oct 2024 17:07:50 +0300 Message-ID: <20241004140922.233939-1-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.46.2 Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: 9kRTFBQLyZTItF8hinWGCXcJG6G0jQPk X-Proofpoint-GUID: 9kRTFBQLyZTItF8hinWGCXcJG6G0jQPk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 impostorscore=0 mlxscore=0 phishscore=0 adultscore=0 clxscore=1015 mlxlogscore=999 suspectscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410040099 Add backend support for obtaining the interface type used. Signed-off-by: Antoniu Miclaus --- changes in v2: - add IIO_BACKEND_INTERFACE_COUNT in enum. - add trailing commas where applies. drivers/iio/industrialio-backend.c | 24 ++++++++++++++++++++++++ include/linux/iio/backend.h | 11 +++++++++++ 2 files changed, 35 insertions(+) diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c index efe05be284b6..a322b0be7b2c 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -449,6 +449,30 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private, } EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, IIO_BACKEND); +/** + * iio_backend_interface_type_get - get the interace type used. + * @back: Backend device + * @type: Interface type + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_interface_type_get(struct iio_backend *back, + enum iio_backend_interface_type *type) +{ + int ret; + + ret = iio_backend_op_call(back, interface_type_get, type); + if (ret) + return ret; + + if (*type >= IIO_BACKEND_INTERFACE_COUNT) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(iio_backend_interface_type_get, IIO_BACKEND); + /** * iio_backend_extend_chan_spec - Extend an IIO channel * @indio_dev: IIO device diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index 8099759d7242..34fc76c99d8a 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -63,6 +63,12 @@ enum iio_backend_sample_trigger { IIO_BACKEND_SAMPLE_TRIGGER_MAX }; +enum iio_backend_interface_type { + IIO_BACKEND_INTERFACE_LVDS, + IIO_BACKEND_INTERFACE_CMOS, + IIO_BACKEND_INTERFACE_COUNT, +}; + /** * struct iio_backend_ops - operations structure for an iio_backend * @enable: Enable backend. @@ -81,6 +87,7 @@ enum iio_backend_sample_trigger { * @extend_chan_spec: Extend an IIO channel. * @ext_info_set: Extended info setter. * @ext_info_get: Extended info getter. + * @interface_type_get: Interface type. **/ struct iio_backend_ops { int (*enable)(struct iio_backend *back); @@ -113,6 +120,8 @@ struct iio_backend_ops { const char *buf, size_t len); int (*ext_info_get)(struct iio_backend *back, uintptr_t private, const struct iio_chan_spec *chan, char *buf); + int (*interface_type_get)(struct iio_backend *back, + enum iio_backend_interface_type *type); }; int iio_backend_chan_enable(struct iio_backend *back, unsigned int chan); @@ -142,6 +151,8 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private, ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private, const struct iio_chan_spec *chan, char *buf); +int iio_backend_interface_type_get(struct iio_backend *back, + enum iio_backend_interface_type *type); int iio_backend_extend_chan_spec(struct iio_dev *indio_dev, struct iio_backend *back, struct iio_chan_spec *chan);