diff mbox series

[PATCHv2,08/12] power: supply: generic-adc-battery: use simple-battery API

Message ID 20230314225535.1321736-9-sre@kernel.org
State Accepted
Commit 1b27bf793fd46219c882b8e545ec736cfadc0841
Headers show
Series Add DT support for generic ADC battery | expand

Commit Message

Sebastian Reichel March 14, 2023, 10:55 p.m. UTC 
Use standard simple-battery API for constant battery
information like min and max voltage. This simplifies
the driver a lot and brings automatic support for DT.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
---
 drivers/power/supply/generic-adc-battery.c | 64 ++--------------------
 include/linux/power/generic-adc-battery.h  | 18 ------
 2 files changed, 4 insertions(+), 78 deletions(-)
 delete mode 100644 include/linux/power/generic-adc-battery.h

Comments

Matti Vaittinen March 16, 2023, 7:38 a.m. UTC | #1 
On 3/15/23 00:55, Sebastian Reichel wrote:
> Use standard simple-battery API for constant battery
> information like min and max voltage. This simplifies
> the driver a lot and brings automatic support for DT.
> 
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
> Signed-off-by: Sebastian Reichel <sre@kernel.org>
> ---
>   drivers/power/supply/generic-adc-battery.c | 64 ++--------------------
>   include/linux/power/generic-adc-battery.h  | 18 ------
>   2 files changed, 4 insertions(+), 78 deletions(-)
>   delete mode 100644 include/linux/power/generic-adc-battery.h
> 
> diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c
> index 771e5cfc49c3..d4f63d945b2c 100644
> --- a/drivers/power/supply/generic-adc-battery.c
> +++ b/drivers/power/supply/generic-adc-battery.c
> @@ -22,7 +22,6 @@
>   #include <linux/slab.h>
>   #include <linux/iio/consumer.h>
>   #include <linux/iio/types.h>
> -#include <linux/power/generic-adc-battery.h>
>   #include <linux/devm-helpers.h>
>   
>   #define JITTER_DEFAULT 10 /* hope 10ms is enough */
> @@ -48,9 +47,7 @@ struct gab {
>   	struct power_supply		*psy;
>   	struct power_supply_desc	psy_desc;
>   	struct iio_channel	*channel[GAB_MAX_CHAN_TYPE];
> -	struct gab_platform_data	*pdata;
>   	struct delayed_work bat_work;
> -	int	level;
>   	int	status;
>   	bool cable_plugged;
>   	struct gpio_desc *charge_finished;
> @@ -70,14 +67,6 @@ static void gab_ext_power_changed(struct power_supply *psy)
>   
>   static const enum power_supply_property gab_props[] = {
>   	POWER_SUPPLY_PROP_STATUS,
> -	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
> -	POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
> -	POWER_SUPPLY_PROP_VOLTAGE_NOW,
> -	POWER_SUPPLY_PROP_CURRENT_NOW,
> -	POWER_SUPPLY_PROP_TECHNOLOGY,
> -	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
> -	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
> -	POWER_SUPPLY_PROP_MODEL_NAME,
>   };
>   
>   /*
> @@ -97,17 +86,6 @@ static bool gab_charge_finished(struct gab *adc_bat)
>   	return gpiod_get_value(adc_bat->charge_finished);
>   }
>   
> -static int gab_get_status(struct gab *adc_bat)
> -{
> -	struct gab_platform_data *pdata = adc_bat->pdata;
> -	struct power_supply_info *bat_info;
> -
> -	bat_info = &pdata->battery_info;
> -	if (adc_bat->level == bat_info->charge_full_design)
> -		return POWER_SUPPLY_STATUS_FULL;

Not sure if this is intentional but I don't see the 
POWER_SUPPLY_STATUS_FULL being reported after applying your series. If 
this is intended, maybe it could be mentioned in commit log?

Other than that - this really cleans up the driver in a nice way!

Yours,
	-- Matti
Sebastian Reichel March 17, 2023, 9:58 p.m. UTC | #2 
Hi,

On Thu, Mar 16, 2023 at 09:38:21AM +0200, Matti Vaittinen wrote:
> On 3/15/23 00:55, Sebastian Reichel wrote:
> > Use standard simple-battery API for constant battery
> > information like min and max voltage. This simplifies
> > the driver a lot and brings automatic support for DT.
> > 
> > Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
> > Signed-off-by: Sebastian Reichel <sre@kernel.org>
> > ---
> >   drivers/power/supply/generic-adc-battery.c | 64 ++--------------------
> >   include/linux/power/generic-adc-battery.h  | 18 ------
> >   2 files changed, 4 insertions(+), 78 deletions(-)
> >   delete mode 100644 include/linux/power/generic-adc-battery.h
> > 
> > diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c
> > index 771e5cfc49c3..d4f63d945b2c 100644
> > --- a/drivers/power/supply/generic-adc-battery.c
> > +++ b/drivers/power/supply/generic-adc-battery.c
> > @@ -22,7 +22,6 @@
> >   #include <linux/slab.h>
> >   #include <linux/iio/consumer.h>
> >   #include <linux/iio/types.h>
> > -#include <linux/power/generic-adc-battery.h>
> >   #include <linux/devm-helpers.h>
> >   #define JITTER_DEFAULT 10 /* hope 10ms is enough */
> > @@ -48,9 +47,7 @@ struct gab {
> >   	struct power_supply		*psy;
> >   	struct power_supply_desc	psy_desc;
> >   	struct iio_channel	*channel[GAB_MAX_CHAN_TYPE];
> > -	struct gab_platform_data	*pdata;
> >   	struct delayed_work bat_work;
> > -	int	level;
> >   	int	status;
> >   	bool cable_plugged;
> >   	struct gpio_desc *charge_finished;
> > @@ -70,14 +67,6 @@ static void gab_ext_power_changed(struct power_supply *psy)
> >   static const enum power_supply_property gab_props[] = {
> >   	POWER_SUPPLY_PROP_STATUS,
> > -	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
> > -	POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
> > -	POWER_SUPPLY_PROP_VOLTAGE_NOW,
> > -	POWER_SUPPLY_PROP_CURRENT_NOW,
> > -	POWER_SUPPLY_PROP_TECHNOLOGY,
> > -	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
> > -	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
> > -	POWER_SUPPLY_PROP_MODEL_NAME,
> >   };
> >   /*
> > @@ -97,17 +86,6 @@ static bool gab_charge_finished(struct gab *adc_bat)
> >   	return gpiod_get_value(adc_bat->charge_finished);
> >   }
> > -static int gab_get_status(struct gab *adc_bat)
> > -{
> > -	struct gab_platform_data *pdata = adc_bat->pdata;
> > -	struct power_supply_info *bat_info;
> > -
> > -	bat_info = &pdata->battery_info;
> > -	if (adc_bat->level == bat_info->charge_full_design)
> > -		return POWER_SUPPLY_STATUS_FULL;
> 
> Not sure if this is intentional but I don't see the POWER_SUPPLY_STATUS_FULL
> being reported after applying your series. If this is intended, maybe it
> could be mentioned in commit log?

Right. I removed it, because 'level' is never written to and thus is
always 0. Apart from that the code needs to be a bit more flexible
anyways (i.e. should not just report full for exactly the same
value) and we currently do not have a way to calculate the current
charge value. Thus removing it makes sense at the moment. Something
better can be added once we have the required infrastructure.

-- Sebastian
diff mbox series

Patch

diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c
index 771e5cfc49c3..d4f63d945b2c 100644
--- a/drivers/power/supply/generic-adc-battery.c
+++ b/drivers/power/supply/generic-adc-battery.c
@@ -22,7 +22,6 @@ 
 #include <linux/slab.h>
 #include <linux/iio/consumer.h>
 #include <linux/iio/types.h>
-#include <linux/power/generic-adc-battery.h>
 #include <linux/devm-helpers.h>
 
 #define JITTER_DEFAULT 10 /* hope 10ms is enough */
@@ -48,9 +47,7 @@  struct gab {
 	struct power_supply		*psy;
 	struct power_supply_desc	psy_desc;
 	struct iio_channel	*channel[GAB_MAX_CHAN_TYPE];
-	struct gab_platform_data	*pdata;
 	struct delayed_work bat_work;
-	int	level;
 	int	status;
 	bool cable_plugged;
 	struct gpio_desc *charge_finished;
@@ -70,14 +67,6 @@  static void gab_ext_power_changed(struct power_supply *psy)
 
 static const enum power_supply_property gab_props[] = {
 	POWER_SUPPLY_PROP_STATUS,
-	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
-	POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
-	POWER_SUPPLY_PROP_VOLTAGE_NOW,
-	POWER_SUPPLY_PROP_CURRENT_NOW,
-	POWER_SUPPLY_PROP_TECHNOLOGY,
-	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
-	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
-	POWER_SUPPLY_PROP_MODEL_NAME,
 };
 
 /*
@@ -97,17 +86,6 @@  static bool gab_charge_finished(struct gab *adc_bat)
 	return gpiod_get_value(adc_bat->charge_finished);
 }
 
-static int gab_get_status(struct gab *adc_bat)
-{
-	struct gab_platform_data *pdata = adc_bat->pdata;
-	struct power_supply_info *bat_info;
-
-	bat_info = &pdata->battery_info;
-	if (adc_bat->level == bat_info->charge_full_design)
-		return POWER_SUPPLY_STATUS_FULL;
-	return adc_bat->status;
-}
-
 static enum gab_chan_type gab_prop_to_chan(enum power_supply_property psp)
 {
 	switch (psp) {
@@ -144,27 +122,12 @@  static int read_channel(struct gab *adc_bat, enum power_supply_property psp,
 static int gab_get_property(struct power_supply *psy,
 		enum power_supply_property psp, union power_supply_propval *val)
 {
-	struct gab *adc_bat;
-	struct gab_platform_data *pdata;
-	struct power_supply_info *bat_info;
-	int result = 0;
-	int ret = 0;
-
-	adc_bat = to_generic_bat(psy);
-	if (!adc_bat) {
-		dev_err(&psy->dev, "no battery infos ?!\n");
-		return -EINVAL;
-	}
-	pdata = adc_bat->pdata;
-	bat_info = &pdata->battery_info;
+	struct gab *adc_bat = to_generic_bat(psy);
 
 	switch (psp) {
 	case POWER_SUPPLY_PROP_STATUS:
-		val->intval = gab_get_status(adc_bat);
-		break;
-	case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
-		val->intval = 0;
-		break;
+		val->intval = adc_bat->status;
+		return 0;
 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
 	case POWER_SUPPLY_PROP_POWER_NOW:
@@ -173,26 +136,9 @@  static int gab_get_property(struct power_supply *psy,
 			goto err;
 		val->intval = result;
 		break;
-	case POWER_SUPPLY_PROP_TECHNOLOGY:
-		val->intval = bat_info->technology;
-		break;
-	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
-		val->intval = bat_info->voltage_min_design;
-		break;
-	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
-		val->intval = bat_info->voltage_max_design;
-		break;
-	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
-		val->intval = bat_info->charge_full_design;
-		break;
-	case POWER_SUPPLY_PROP_MODEL_NAME:
-		val->strval = bat_info->name;
-		break;
 	default:
 		return -EINVAL;
 	}
-err:
-	return ret;
 }
 
 static void gab_work(struct work_struct *work)
@@ -235,7 +181,6 @@  static int gab_probe(struct platform_device *pdev)
 	struct gab *adc_bat;
 	struct power_supply_desc *psy_desc;
 	struct power_supply_config psy_cfg = {};
-	struct gab_platform_data *pdata = pdev->dev.platform_data;
 	enum power_supply_property *properties;
 	int ret = 0;
 	int chan;
@@ -248,7 +193,7 @@  static int gab_probe(struct platform_device *pdev)
 
 	psy_cfg.drv_data = adc_bat;
 	psy_desc = &adc_bat->psy_desc;
-	psy_desc->name = pdata->battery_info.name;
+	psy_desc->name = dev_name(&pdev->dev);
 
 	/* bootup default values for the battery */
 	adc_bat->cable_plugged = false;
@@ -256,7 +201,6 @@  static int gab_probe(struct platform_device *pdev)
 	psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
 	psy_desc->get_property = gab_get_property;
 	psy_desc->external_power_changed = gab_ext_power_changed;
-	adc_bat->pdata = pdata;
 
 	/*
 	 * copying the static properties and allocating extra memory for holding
diff --git a/include/linux/power/generic-adc-battery.h b/include/linux/power/generic-adc-battery.h
deleted file mode 100644
index 54434e4304d3..000000000000
--- a/include/linux/power/generic-adc-battery.h
+++ /dev/null
@@ -1,18 +0,0 @@ 
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2012, Anish Kumar <anish198519851985@gmail.com>
- */
-
-#ifndef GENERIC_ADC_BATTERY_H
-#define GENERIC_ADC_BATTERY_H
-
-/**
- * struct gab_platform_data - platform_data for generic adc iio battery driver.
- * @battery_info:         recommended structure to specify static power supply
- *			   parameters
- */
-struct gab_platform_data {
-	struct power_supply_info battery_info;
-};
-
-#endif /* GENERIC_ADC_BATTERY_H */