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iio: adc: sc27xx_adc: Re-use generic struct u32_fract

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Instead of a pair of u32 re-use generic struct u32_fract.
No functional changes intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Cixi Geng <cixi.geng1@unisoc.com>
Link: https://lore.kernel.org/r/20220530180910.2533-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Andy Shevchenko 2022-05-30 21:09:10 +03:00 committed by Jonathan Cameron
parent 754d013433
commit 5a3ec28ada
1 changed files with 7 additions and 8 deletions
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15
drivers/iio/adc/sc27xx_adc.c
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@ -579,15 +579,14 @@ unlock_adc:
return ret; return ret;
} }
static void sc27xx_adc_volt_ratio(struct sc27xx_adc_data *data, static void sc27xx_adc_volt_ratio(struct sc27xx_adc_data *data, int channel, int scale,
int channel, int scale, struct u32_fract *fract)
u32 *div_numerator, u32 *div_denominator)
{ {
u32 ratio; u32 ratio;
ratio = data->var_data->get_ratio(channel, scale); ratio = data->var_data->get_ratio(channel, scale);
*div_numerator = ratio >> SC27XX_RATIO_NUMERATOR_OFFSET; fract->numerator = ratio >> SC27XX_RATIO_NUMERATOR_OFFSET;
*div_denominator = ratio & SC27XX_RATIO_DENOMINATOR_MASK; fract->denominator = ratio & SC27XX_RATIO_DENOMINATOR_MASK;
} }
static int adc_to_volt(struct sc27xx_adc_linear_graph *graph, static int adc_to_volt(struct sc27xx_adc_linear_graph *graph,
@ -615,7 +614,7 @@ static int sc27xx_adc_to_volt(struct sc27xx_adc_linear_graph *graph,
static int sc27xx_adc_convert_volt(struct sc27xx_adc_data *data, int channel, static int sc27xx_adc_convert_volt(struct sc27xx_adc_data *data, int channel,
int scale, int raw_adc) int scale, int raw_adc)
{ {
u32 numerator, denominator; struct u32_fract fract;
u32 volt; u32 volt;
/* /*
@ -637,9 +636,9 @@ static int sc27xx_adc_convert_volt(struct sc27xx_adc_data *data, int channel,
break; break;
} }
sc27xx_adc_volt_ratio(data, channel, scale, &numerator, &denominator); sc27xx_adc_volt_ratio(data, channel, scale, &fract);
return DIV_ROUND_CLOSEST(volt * denominator, numerator); return DIV_ROUND_CLOSEST(volt * fract.denominator, fract.numerator);
} }
static int sc27xx_adc_read_processed(struct sc27xx_adc_data *data, static int sc27xx_adc_read_processed(struct sc27xx_adc_data *data,