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Fri, 1 Nov 2024 07:24:33 -0400 From: Antoniu Miclaus To: , , , , , , CC: Antoniu Miclaus Subject: [PATCH v5 3/6] iio: adc: adi-axi-adc: add interface type Date: Fri, 1 Nov 2024 13:23:55 +0200 Message-ID: <20241101112358.22996-4-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-ORIG-GUID: NYunHcw4MYJB1ijZLIU6nAURlnem5WRp X-Proofpoint-GUID: NYunHcw4MYJB1ijZLIU6nAURlnem5WRp 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 spamscore=0 mlxlogscore=999 lowpriorityscore=0 clxscore=1015 suspectscore=0 bulkscore=0 priorityscore=1501 mlxscore=0 malwarescore=0 phishscore=0 impostorscore=0 adultscore=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 support for getting the interface (CMOS or LVDS) used by the AXI ADC IP. Signed-off-by: Antoniu Miclaus Reviewed-by: David Lechner --- changes in v5: - use IIO_BACKEND_INTERFACE_SERIAL_CMOS and IIO_BACKEND_INTERFACE_SERIAL_L= VDS drivers/iio/adc/adi-axi-adc.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 5c8c87eb36d1..f6475bc93796 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -39,6 +39,9 @@ #define ADI_AXI_REG_RSTN_MMCM_RSTN BIT(1) #define ADI_AXI_REG_RSTN_RSTN BIT(0) =20 +#define ADI_AXI_ADC_REG_CONFIG 0x000c +#define ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N BIT(7) + #define ADI_AXI_ADC_REG_CTRL 0x0044 #define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1) =20 @@ -290,6 +293,25 @@ static int axi_adc_chan_disable(struct iio_backend *ba= ck, unsigned int chan) ADI_AXI_REG_CHAN_CTRL_ENABLE); } =20 +static int axi_adc_interface_type_get(struct iio_backend *back, + enum iio_backend_interface_type *type) +{ + struct adi_axi_adc_state *st =3D iio_backend_get_priv(back); + unsigned int val; + int ret; + + ret =3D regmap_read(st->regmap, ADI_AXI_ADC_REG_CONFIG, &val); + if (ret) + return ret; + + if (val & ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N) + *type =3D IIO_BACKEND_INTERFACE_SERIAL_CMOS; + else + *type =3D IIO_BACKEND_INTERFACE_SERIAL_LVDS; + + return 0; +} + static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, struct iio_dev *indio_dev) { @@ -337,6 +359,7 @@ static const struct iio_backend_ops adi_axi_adc_ops =3D= { .iodelay_set =3D axi_adc_iodelays_set, .test_pattern_set =3D axi_adc_test_pattern_set, .chan_status =3D axi_adc_chan_status, + .interface_type_get =3D axi_adc_interface_type_get, .debugfs_reg_access =3D iio_backend_debugfs_ptr(axi_adc_reg_access), .debugfs_print_chan_status =3D iio_backend_debugfs_ptr(axi_adc_debugfs_pr= int_chan_status), }; --=20 2.47.0