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([2001:818:ea8e:7f00:2575:914:eedd:620e]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38bf3275995sm2864100f8f.74.2025.01.17.08.08.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jan 2025 08:08:48 -0800 (PST) Message-ID: <0d917148509217f3fab95b4cf2e7f14b4c3c0dd1.camel@gmail.com> Subject: Re: [PATCH v10 1/8] iio: backend: add API for interface get From: Nuno =?ISO-8859-1?Q?S=E1?= To: Antoniu Miclaus , jic23@kernel.org, robh@kernel.org, conor+dt@kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org Cc: David Lechner Date: Fri, 17 Jan 2025 16:08:49 +0000 In-Reply-To: <20250117130702.22588-2-antoniu.miclaus@analog.com> References: <20250117130702.22588-1-antoniu.miclaus@analog.com> <20250117130702.22588-2-antoniu.miclaus@analog.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.3 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Fri, 2025-01-17 at 15:06 +0200, Antoniu Miclaus wrote: > Add backend support for obtaining the interface type used. >=20 > Reviewed-by: David Lechner > Signed-off-by: Antoniu Miclaus > --- Reviewed-by: Nuno Sa > no changes in v10. > =C2=A0drivers/iio/industrialio-backend.c | 24 ++++++++++++++++++++++++ > =C2=A0include/linux/iio/backend.h=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 | 11 +++++++++++ > =C2=A02 files changed, 35 insertions(+) >=20 > diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industriali= o- > backend.c > index 363281272035..8bf3d570da1b 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, > =C2=A0} > =C2=A0EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, "IIO_BACKEND"); > =C2=A0 > +/** > + * 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, > + =C2=A0=C2=A0 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"); > + > =C2=A0/** > =C2=A0 * iio_backend_extend_chan_spec - Extend an IIO channel > =C2=A0 * @back: Backend device > diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h > index 10be00f3b120..a0ea6c29d7ba 100644 > --- a/include/linux/iio/backend.h > +++ b/include/linux/iio/backend.h > @@ -70,6 +70,12 @@ enum iio_backend_sample_trigger { > =C2=A0 IIO_BACKEND_SAMPLE_TRIGGER_MAX > =C2=A0}; > =C2=A0 > +enum iio_backend_interface_type { > + IIO_BACKEND_INTERFACE_SERIAL_LVDS, > + IIO_BACKEND_INTERFACE_SERIAL_CMOS, > + IIO_BACKEND_INTERFACE_MAX > +}; > + > =C2=A0/** > =C2=A0 * struct iio_backend_ops - operations structure for an iio_backend > =C2=A0 * @enable: Enable backend. > @@ -88,6 +94,7 @@ enum iio_backend_sample_trigger { > =C2=A0 * @extend_chan_spec: Extend an IIO channel. > =C2=A0 * @ext_info_set: Extended info setter. > =C2=A0 * @ext_info_get: Extended info getter. > + * @interface_type_get: Interface type. > =C2=A0 * @read_raw: Read a channel attribute from a backend device > =C2=A0 * @debugfs_print_chan_status: Print channel status into a buffer. > =C2=A0 * @debugfs_reg_access: Read or write register value of backend. > @@ -128,6 +135,8 @@ struct iio_backend_ops { > =C2=A0 =C2=A0=C2=A0=C2=A0 const char *buf, size_t len); > =C2=A0 int (*ext_info_get)(struct iio_backend *back, uintptr_t private, > =C2=A0 =C2=A0=C2=A0=C2=A0 const struct iio_chan_spec *chan, char *buf); > + int (*interface_type_get)(struct iio_backend *back, > + =C2=A0 enum iio_backend_interface_type *type); > =C2=A0 int (*read_raw)(struct iio_backend *back, > =C2=A0 struct iio_chan_spec const *chan, int *val, int > *val2, > =C2=A0 long mask); > @@ -186,6 +195,8 @@ ssize_t iio_backend_ext_info_set(struct iio_dev > *indio_dev, uintptr_t private, > =C2=A0 const char *buf, size_t len); > =C2=A0ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr= _t > private, > =C2=A0 const struct iio_chan_spec *chan, char > *buf); > +int iio_backend_interface_type_get(struct iio_backend *back, > + =C2=A0=C2=A0 enum iio_backend_interface_type *type); > =C2=A0int iio_backend_read_raw(struct iio_backend *back, > =C2=A0 struct iio_chan_spec const *chan, int *val, int > *val2, > =C2=A0 long mask);