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Fri, 1 Nov 2024 07:24:31 -0400 From: Antoniu Miclaus To: , , , , , , CC: Antoniu Miclaus Subject: [PATCH v5 1/6] iio: backend: add API for interface get Date: Fri, 1 Nov 2024 13:23:53 +0200 Message-ID: <20241101112358.22996-2-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241101112358.22996-1-antoniu.miclaus@analog.com> References: <20241101112358.22996-1-antoniu.miclaus@analog.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: pLLA_zUC0bw1_OMtuEW-EK82dRmvWcce X-Proofpoint-ORIG-GUID: pLLA_zUC0bw1_OMtuEW-EK82dRmvWcce 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 mlxscore=0 mlxlogscore=999 spamscore=0 impostorscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411010082 Content-Type: text/plain; charset="utf-8" Add backend support for obtaining the interface type used. Signed-off-by: Antoniu Miclaus Reviewed-by: David Lechner --- changes in v5: - drop IIO_BACKEND_INTERFACE_LVDS and IIO_BACKEND_INTERFACE_CMOS from enum 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 20b3b5212da7..c792cd1e24e8 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -636,6 +636,30 @@ 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); =20 +/** + * iio_backend_interface_type_get - get the interface 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 =3D iio_backend_op_call(back, interface_type_get, type); + if (ret) + return ret; + + if (*type >=3D IIO_BACKEND_INTERFACE_MAX) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(iio_backend_interface_type_get, IIO_BACKEND); + /** * iio_backend_extend_chan_spec - Extend an IIO channel * @back: Backend device diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index 37d56914d485..e5ea90f1c3e0 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -68,6 +68,12 @@ enum iio_backend_sample_trigger { IIO_BACKEND_SAMPLE_TRIGGER_MAX }; =20 +enum iio_backend_interface_type { + IIO_BACKEND_INTERFACE_SERIAL_LVDS, + IIO_BACKEND_INTERFACE_SERIAL_CMOS, + IIO_BACKEND_INTERFACE_MAX +}; + /** * struct iio_backend_ops - operations structure for an iio_backend * @enable: Enable backend. @@ -86,6 +92,7 @@ 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. * @read_raw: Read a channel attribute from a backend device * @debugfs_print_chan_status: Print channel status into a buffer. * @debugfs_reg_access: Read or write register value of backend. @@ -121,6 +128,8 @@ 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 (*read_raw)(struct iio_backend *back, struct iio_chan_spec const *chan, int *val, int *val2, long mask); @@ -169,6 +178,8 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio_= dev, uintptr_t private, const char *buf, size_t len); ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t priv= ate, 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_read_raw(struct iio_backend *back, struct iio_chan_spec const *chan, int *val, int *val2, long mask); --=20 2.47.0