[PATCH v1 4/5] iio: adc: qcom-vadc-common: Re-use generic struct u32_fract

Andy Shevchenko
2022-01-10T18:17:19Z

Instead of custom data type re-use generic struct u32_fract.
No changes intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/iio/adc/qcom-pm8xxx-xoadc.c | 2 +-
drivers/iio/adc/qcom-spmi-vadc.c | 2 +-
drivers/iio/adc/qcom-vadc-common.c | 48 ++++++++++++------------
include/linux/iio/adc/qcom-vadc-common.h | 15 ++------
4 files changed, 29 insertions(+), 38 deletions(-)

diff --git a/drivers/iio/adc/qcom-pm8xxx-xoadc.c b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
index 21d7eff645c3..ef249d745d85 100644
--- a/drivers/iio/adc/qcom-pm8xxx-xoadc.c
+++ b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
@@ -175,7 +175,7 @@ struct xoadc_channel {
const char *datasheet_name;
u8 pre_scale_mux:2;
u8 amux_channel:4;
- const struct vadc_prescale_ratio prescale;
+ const struct u32_fract prescale;
enum iio_chan_type type;
enum vadc_scale_fn_type scale_fn_type;
u8 amux_ip_rsv:3;
diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
index 07b1a99381d9..69733564fa42 100644
--- a/drivers/iio/adc/qcom-spmi-vadc.c
+++ b/drivers/iio/adc/qcom-spmi-vadc.c
@@ -122,7 +122,7 @@ struct vadc_priv {
struct mutex lock;
};

-static const struct vadc_prescale_ratio vadc_prescale_ratios[] = {
+static const struct u32_fract vadc_prescale_ratios[] = {
{.num = 1, .den = 1},
{.num = 1, .den = 3},
{.num = 1, .den = 4},
diff --git a/drivers/iio/adc/qcom-vadc-common.c b/drivers/iio/adc/qcom-vadc-common.c
index 14723896aab2..ec177360a354 100644
--- a/drivers/iio/adc/qcom-vadc-common.c
+++ b/drivers/iio/adc/qcom-vadc-common.c
@@ -289,7 +289,7 @@ static const struct vadc_map_pt adcmap7_100k[] = {
{ 2420, 130048 }
};

-static const struct vadc_prescale_ratio adc5_prescale_ratios[] = {
+static const struct u32_fract adc5_prescale_ratios[] = {
{.num = 1, .den = 1},
{.num = 1, .den = 3},
{.num = 1, .den = 4},
@@ -302,31 +302,31 @@ static const struct vadc_prescale_ratio adc5_prescale_ratios[] = {
};

static int qcom_vadc_scale_hw_calib_volt(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_uv);
static int qcom_vadc_scale_hw_calib_therm(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec);
static int qcom_vadc7_scale_hw_calib_therm(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec);
static int qcom_vadc_scale_hw_smb_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec);
static int qcom_vadc_scale_hw_chg5_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec);
static int qcom_vadc_scale_hw_calib_die_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec);
static int qcom_vadc7_scale_hw_calib_die_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec);

@@ -406,7 +406,7 @@ static void qcom_vadc_scale_calib(const struct vadc_linear_graph *calib_graph,
}

static int qcom_vadc_scale_volt(const struct vadc_linear_graph *calib_graph,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
bool absolute, u16 adc_code,
int *result_uv)
{
@@ -422,7 +422,7 @@ static int qcom_vadc_scale_volt(const struct vadc_linear_graph *calib_graph,
}

static int qcom_vadc_scale_therm(const struct vadc_linear_graph *calib_graph,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
bool absolute, u16 adc_code,
int *result_mdec)
{
@@ -444,7 +444,7 @@ static int qcom_vadc_scale_therm(const struct vadc_linear_graph *calib_graph,
}

static int qcom_vadc_scale_die_temp(const struct vadc_linear_graph *calib_graph,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
bool absolute,
u16 adc_code, int *result_mdec)
{
@@ -467,7 +467,7 @@ static int qcom_vadc_scale_die_temp(const struct vadc_linear_graph *calib_graph,
}

static int qcom_vadc_scale_chg_temp(const struct vadc_linear_graph *calib_graph,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
bool absolute,
u16 adc_code, int *result_mdec)
{
@@ -487,7 +487,7 @@ static int qcom_vadc_scale_chg_temp(const struct vadc_linear_graph *calib_graph,

/* convert voltage to ADC code, using 1.875V reference */
static u16 qcom_vadc_scale_voltage_code(s32 voltage,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const u32 full_scale_code_volt,
unsigned int factor)
{
@@ -501,7 +501,7 @@ static u16 qcom_vadc_scale_voltage_code(s32 voltage,
}

static int qcom_vadc_scale_code_voltage_factor(u16 adc_code,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
unsigned int factor)
{
@@ -531,7 +531,7 @@ static int qcom_vadc_scale_code_voltage_factor(u16 adc_code,
}

static int qcom_vadc7_scale_hw_calib_therm(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec)
{
@@ -557,7 +557,7 @@ static int qcom_vadc7_scale_hw_calib_therm(
}

static int qcom_vadc_scale_hw_calib_volt(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_uv)
{
@@ -568,7 +568,7 @@ static int qcom_vadc_scale_hw_calib_volt(
}

static int qcom_vadc_scale_hw_calib_therm(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec)
{
@@ -584,7 +584,7 @@ static int qcom_vadc_scale_hw_calib_therm(
}

static int qcom_vadc_scale_hw_calib_die_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec)
{
@@ -596,7 +596,7 @@ static int qcom_vadc_scale_hw_calib_die_temp(
}

static int qcom_vadc7_scale_hw_calib_die_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec)
{
@@ -611,7 +611,7 @@ static int qcom_vadc7_scale_hw_calib_die_temp(
}

static int qcom_vadc_scale_hw_smb_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec)
{
@@ -623,7 +623,7 @@ static int qcom_vadc_scale_hw_smb_temp(
}

static int qcom_vadc_scale_hw_chg5_temp(
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
const struct adc5_data *data,
u16 adc_code, int *result_mdec)
{
@@ -636,7 +636,7 @@ static int qcom_vadc_scale_hw_chg5_temp(

int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
const struct vadc_linear_graph *calib_graph,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
bool absolute,
u16 adc_code, int *result)
{
@@ -667,7 +667,7 @@ EXPORT_SYMBOL(qcom_vadc_scale);
u16 qcom_adc_tm5_temp_volt_scale(unsigned int prescale_ratio,
u32 full_scale_code_volt, int temp)
{
- const struct vadc_prescale_ratio *prescale = &adc5_prescale_ratios[prescale_ratio];
+ const struct u32_fract *prescale = &adc5_prescale_ratios[prescale_ratio];
s32 voltage;

voltage = qcom_vadc_map_temp_voltage(adcmap_100k_104ef_104fb_1875_vref,
@@ -682,7 +682,7 @@ int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype,
const struct adc5_data *data,
u16 adc_code, int *result)
{
- const struct vadc_prescale_ratio *prescale = &adc5_prescale_ratios[prescale_ratio];
+ const struct u32_fract *prescale = &adc5_prescale_ratios[prescale_ratio];

if (!(scaletype >= SCALE_HW_CALIB_DEFAULT &&
scaletype < SCALE_HW_CALIB_INVALID)) {
diff --git a/include/linux/iio/adc/qcom-vadc-common.h b/include/linux/iio/adc/qcom-vadc-common.h
index 33f60f43e1aa..ce78d4804994 100644
--- a/include/linux/iio/adc/qcom-vadc-common.h
+++ b/include/linux/iio/adc/qcom-vadc-common.h
@@ -6,6 +6,7 @@
#ifndef QCOM_VADC_COMMON_H
#define QCOM_VADC_COMMON_H

+#include <linux/math.h>
#include <linux/types.h>

#define VADC_CONV_TIME_MIN_US 2000
@@ -79,16 +80,6 @@ struct vadc_linear_graph {
s32 gnd;
};

-/**
- * struct vadc_prescale_ratio - Represent scaling ratio for ADC input.
- * @num: the inverse numerator of the gain applied to the input channel.
- * @den: the inverse denominator of the gain applied to the input channel.
- */
-struct vadc_prescale_ratio {
- u32 num;
- u32 den;
-};
-
/**
* enum vadc_scale_fn_type - Scaling function to convert ADC code to
* physical scaled units for the channel.
@@ -144,12 +135,12 @@ struct adc5_data {

int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
const struct vadc_linear_graph *calib_graph,
- const struct vadc_prescale_ratio *prescale,
+ const struct u32_fract *prescale,
bool absolute,
u16 adc_code, int *result_mdec);

struct qcom_adc5_scale_type {
- int (*scale_fn)(const struct vadc_prescale_ratio *prescale,
+ int (*scale_fn)(const struct u32_fract *prescale,
const struct adc5_data *data, u16 adc_code, int *result);
};

--
2.34.1