| Message ID | 1590684869-15400-8-git-send-email-jprakash@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [V6,1/7] iio: adc: Convert the QCOM SPMI ADC bindings to .yaml format | expand |
On Thu, 28 May 2020 22:24:29 +0530 Jishnu Prakash <jprakash@codeaurora.org> wrote: > Add a common function used for read_raw callback for both PMIC5 > and PMIC7 ADCs. > > Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org> Hmm. I'm not completely sold on this one. Suggestions below. Jonathan > --- > drivers/iio/adc/qcom-spmi-adc5.c | 53 +++++++++++++++++++--------------------- > 1 file changed, 25 insertions(+), 28 deletions(-) > > diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c > index 0f9af66..fe49741 100644 > --- a/drivers/iio/adc/qcom-spmi-adc5.c > +++ b/drivers/iio/adc/qcom-spmi-adc5.c > @@ -449,6 +449,13 @@ static int adc7_do_conversion(struct adc5_chip *adc, > return ret; > } > > +struct adc_do_conversion { > + int (*adc_do_conversion)(struct adc5_chip *adc, > + struct adc5_channel_prop *prop, > + struct iio_chan_spec const *chan, > + u16 *data_volt, u16 *data_cur); Why use a structure for this? It's just a function pointer. If they form is too long you can always use a typedef. This is fine if you have other stuff coming shortly that will add to this structure but for now it's just a bit confusing. Directly passing the function pointer will reduce the amount of coded added here and make the argument in favour of refactoring rather stronger. > +}; > + > static irqreturn_t adc5_isr(int irq, void *dev_id) > { > struct adc5_chip *adc = dev_id; > @@ -487,9 +494,9 @@ static int adc7_of_xlate(struct iio_dev *indio_dev, > return -EINVAL; > } > > -static int adc5_read_raw(struct iio_dev *indio_dev, > +static int adc_read_raw_common(struct iio_dev *indio_dev, > struct iio_chan_spec const *chan, int *val, int *val2, > - long mask) > + long mask, struct adc_do_conversion do_conv) > { > struct adc5_chip *adc = iio_priv(indio_dev); > struct adc5_channel_prop *prop; > @@ -500,8 +507,8 @@ static int adc5_read_raw(struct iio_dev *indio_dev, > > switch (mask) { > case IIO_CHAN_INFO_PROCESSED: > - ret = adc5_do_conversion(adc, prop, chan, > - &adc_code_volt, &adc_code_cur); > + ret = do_conv.adc_do_conversion(adc, prop, chan, > + &adc_code_volt, &adc_code_cur); > if (ret) > return ret; > > @@ -518,36 +525,26 @@ static int adc5_read_raw(struct iio_dev *indio_dev, > } > } > > -static int adc7_read_raw(struct iio_dev *indio_dev, > +static int adc5_read_raw(struct iio_dev *indio_dev, > struct iio_chan_spec const *chan, int *val, int *val2, > long mask) > { > - struct adc5_chip *adc = iio_priv(indio_dev); > - struct adc5_channel_prop *prop; > - u16 adc_code_volt, adc_code_cur; > - int ret; > - > - prop = &adc->chan_props[chan->address]; > - > - switch (mask) { > - case IIO_CHAN_INFO_PROCESSED: > - ret = adc7_do_conversion(adc, prop, chan, > - &adc_code_volt, &adc_code_cur); > - if (ret) > - return ret; > + struct adc_do_conversion do_conv; > > - ret = qcom_adc5_hw_scale(prop->scale_fn_type, > - &adc5_prescale_ratios[prop->prescale], > - adc->data, > - adc_code_volt, val); > + do_conv.adc_do_conversion = adc5_do_conversion; > + return adc_read_raw_common(indio_dev, chan, val, val2, > + mask, do_conv); > +} > > - if (ret) > - return ret; > +static int adc7_read_raw(struct iio_dev *indio_dev, > + struct iio_chan_spec const *chan, int *val, int *val2, > + long mask) > +{ > + struct adc_do_conversion do_conv; > > - return IIO_VAL_INT; > - default: > - return -EINVAL; > - } > + do_conv.adc_do_conversion = adc7_do_conversion; > + return adc_read_raw_common(indio_dev, chan, val, val2, > + mask, do_conv); > } > > static const struct iio_info adc5_info = {
diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index 0f9af66..fe49741 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -449,6 +449,13 @@ static int adc7_do_conversion(struct adc5_chip *adc, return ret; } +struct adc_do_conversion { + int (*adc_do_conversion)(struct adc5_chip *adc, + struct adc5_channel_prop *prop, + struct iio_chan_spec const *chan, + u16 *data_volt, u16 *data_cur); +}; + static irqreturn_t adc5_isr(int irq, void *dev_id) { struct adc5_chip *adc = dev_id; @@ -487,9 +494,9 @@ static int adc7_of_xlate(struct iio_dev *indio_dev, return -EINVAL; } -static int adc5_read_raw(struct iio_dev *indio_dev, +static int adc_read_raw_common(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, - long mask) + long mask, struct adc_do_conversion do_conv) { struct adc5_chip *adc = iio_priv(indio_dev); struct adc5_channel_prop *prop; @@ -500,8 +507,8 @@ static int adc5_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_PROCESSED: - ret = adc5_do_conversion(adc, prop, chan, - &adc_code_volt, &adc_code_cur); + ret = do_conv.adc_do_conversion(adc, prop, chan, + &adc_code_volt, &adc_code_cur); if (ret) return ret; @@ -518,36 +525,26 @@ static int adc5_read_raw(struct iio_dev *indio_dev, } } -static int adc7_read_raw(struct iio_dev *indio_dev, +static int adc5_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { - struct adc5_chip *adc = iio_priv(indio_dev); - struct adc5_channel_prop *prop; - u16 adc_code_volt, adc_code_cur; - int ret; - - prop = &adc->chan_props[chan->address]; - - switch (mask) { - case IIO_CHAN_INFO_PROCESSED: - ret = adc7_do_conversion(adc, prop, chan, - &adc_code_volt, &adc_code_cur); - if (ret) - return ret; + struct adc_do_conversion do_conv; - ret = qcom_adc5_hw_scale(prop->scale_fn_type, - &adc5_prescale_ratios[prop->prescale], - adc->data, - adc_code_volt, val); + do_conv.adc_do_conversion = adc5_do_conversion; + return adc_read_raw_common(indio_dev, chan, val, val2, + mask, do_conv); +} - if (ret) - return ret; +static int adc7_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, int *val2, + long mask) +{ + struct adc_do_conversion do_conv; - return IIO_VAL_INT; - default: - return -EINVAL; - } + do_conv.adc_do_conversion = adc7_do_conversion; + return adc_read_raw_common(indio_dev, chan, val, val2, + mask, do_conv); } static const struct iio_info adc5_info = {
Add a common function used for read_raw callback for both PMIC5 and PMIC7 ADCs. Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org> --- drivers/iio/adc/qcom-spmi-adc5.c | 53 +++++++++++++++++++--------------------- 1 file changed, 25 insertions(+), 28 deletions(-)