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([2600:8803:e7e4:1d00:dc17:157d:e8b2:3ad6]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7308b314b5dsm377480a34.64.2025.04.29.10.22.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 29 Apr 2025 10:22:37 -0700 (PDT) Message-ID: Date: Tue, 29 Apr 2025 12:22:36 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 07/11] iio: adc: adi-axi-adc: add sync enable/disable 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 References: <20250425112538.59792-1-antoniu.miclaus@analog.com> <20250425112538.59792-8-antoniu.miclaus@analog.com> From: David Lechner Content-Language: en-US In-Reply-To: <20250425112538.59792-8-antoniu.miclaus@analog.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 4/25/25 6:25 AM, Antoniu Miclaus wrote: > Add support for enabling/disabling the sync process used for data > capture alignment. > > Signed-off-by: Antoniu Miclaus > --- > changes in v3: > - update the function to match the new backend interface. > drivers/iio/adc/adi-axi-adc.c | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c > index 2a3a6c3f5e59..9947be059f98 100644 > --- a/drivers/iio/adc/adi-axi-adc.c > +++ b/drivers/iio/adc/adi-axi-adc.c > @@ -44,6 +44,7 @@ > #define ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N BIT(7) > > #define ADI_AXI_ADC_REG_CTRL 0x0044 > +#define AXI_AD408X_CTRL_SYNC_MSK BIT(3) If this bit applies to AXI ADC in general, then it shouldn't have AD408X in the name. Or, if this is really specific to AD408X, then... > #define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1) > > #define ADI_AXI_ADC_REG_CNTRL_3 0x004c > @@ -416,6 +417,22 @@ static int axi_adc_ad408x_filter_type_set(struct iio_backend *back, > AXI_AD408X_CNTRL_3_FILTER_EN_MSK); > } > > +static int axi_adc_sync_enable(struct iio_backend *back) > +{ > + struct adi_axi_adc_state *st = iio_backend_get_priv(back); > + > + return regmap_set_bits(st->regmap, ADI_AXI_ADC_REG_CTRL, > + AXI_AD408X_CTRL_SYNC_MSK); > +} > + > +static int axi_adc_sync_disable(struct iio_backend *back) > +{ > + struct adi_axi_adc_state *st = iio_backend_get_priv(back); > + > + return regmap_clear_bits(st->regmap, ADI_AXI_ADC_REG_CTRL, > + AXI_AD408X_CTRL_SYNC_MSK); > +} ... these functions should have ad408x in the name to make that clear and ... > + > static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, > struct iio_dev *indio_dev) > { > @@ -559,6 +576,8 @@ static const struct iio_backend_ops adi_axi_adc_ops = { > .request_buffer = axi_adc_request_buffer, > .free_buffer = axi_adc_free_buffer, > .data_sample_trigger = axi_adc_data_sample_trigger, > + .data_alignment_enable = axi_adc_sync_enable, > + .data_alignment_disable = axi_adc_sync_disable, ... we shouldn't be adding them to the generic core ops. > .iodelay_set = axi_adc_iodelays_set, > .test_pattern_set = axi_adc_test_pattern_set, > .chan_status = axi_adc_chan_status, > @@ -605,6 +624,8 @@ static const struct iio_backend_ops adi_ad408x_ops = { > .free_buffer = axi_adc_free_buffer, > .data_sample_trigger = axi_adc_data_sample_trigger, > .filter_type_set = axi_adc_ad408x_filter_type_set, > + .data_alignment_enable = axi_adc_sync_enable, > + .data_alignment_disable = axi_adc_sync_disable, > .debugfs_reg_access = iio_backend_debugfs_ptr(axi_adc_reg_access), > .debugfs_print_chan_status = iio_backend_debugfs_ptr(axi_adc_debugfs_print_chan_status), > };