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Date: Mon, 7 Jan 2008 01:53:06 +0300
From: Anton Vorontsov <cbouatmailru@...il.com>
To: Dmitry Baryshkov <dbaryshkov@...il.com>
Cc: linux-kernel@...r.kernel.org, cbou@...l.ru, dwmw2@...radead.org
Subject: Re: [PATCH 3/3]
On Sun, Jan 06, 2008 at 03:30:16PM +0300, Dmitry Baryshkov wrote:
> Support using VOLTAGE_* properties for apm calculations. It's pretty
> dummy, but useful for batteries for which we can only get voltages.
Here Signed-off-by: line is missing, please provide one so I could
apply the patch.
Thanks!
> diff --git a/drivers/power/apm_power.c b/drivers/power/apm_power.c
> index bbf3ee1..526c96e 100644
> --- a/drivers/power/apm_power.c
> +++ b/drivers/power/apm_power.c
> @@ -13,6 +13,12 @@
> #include <linux/power_supply.h>
> #include <linux/apm-emulation.h>
>
> +typedef enum {
> + SOURCE_ENERGY,
> + SOURCE_CHARGE,
> + SOURCE_VOLTAGE,
> +} apm_source;
> +
> #define PSY_PROP(psy, prop, val) psy->get_property(psy, \
> POWER_SUPPLY_PROP_##prop, val)
>
> @@ -87,7 +93,7 @@ static void find_main_battery(void)
> }
> }
>
> -static int calculate_time(int status, int using_charge)
> +static int calculate_time(int status, apm_source source)
> {
> union power_supply_propval full;
> union power_supply_propval empty;
> @@ -106,20 +112,34 @@ static int calculate_time(int status, int using_charge)
> return -1;
> }
>
> - if (using_charge) {
> + switch (source) {
> + case SOURCE_CHARGE:
> full_prop = POWER_SUPPLY_PROP_CHARGE_FULL;
> full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN;
> empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
> empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
> cur_avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG;
> cur_now_prop = POWER_SUPPLY_PROP_CHARGE_NOW;
> - } else {
> + break;
> + case SOURCE_ENERGY:
> full_prop = POWER_SUPPLY_PROP_ENERGY_FULL;
> full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN;
> empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY;
> empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
> cur_avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG;
> cur_now_prop = POWER_SUPPLY_PROP_ENERGY_NOW;
> + break;
> + case SOURCE_VOLTAGE:
> + full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX;
> + full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN;
> + empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN;
> + empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN;
> + cur_avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG;
> + cur_now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW;
> + break;
> + default:
> + printk(KERN_ERR "Unsupported source: %d\n", source);
> + return -1;
> }
>
> if (_MPSY_PROP(full_prop, &full)) {
> @@ -146,7 +166,7 @@ static int calculate_time(int status, int using_charge)
> return -((cur.intval - empty.intval) * 60L) / I.intval;
> }
>
> -static int calculate_capacity(int using_charge)
> +static int calculate_capacity(apm_source source)
> {
> enum power_supply_property full_prop, empty_prop;
> enum power_supply_property full_design_prop, empty_design_prop;
> @@ -154,20 +174,33 @@ static int calculate_capacity(int using_charge)
> union power_supply_propval empty, full, cur;
> int ret;
>
> - if (using_charge) {
> + switch (source) {
> + case SOURCE_CHARGE:
> full_prop = POWER_SUPPLY_PROP_CHARGE_FULL;
> empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
> full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN;
> empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN;
> now_prop = POWER_SUPPLY_PROP_CHARGE_NOW;
> avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG;
> - } else {
> + break;
> + case SOURCE_ENERGY:
> full_prop = POWER_SUPPLY_PROP_ENERGY_FULL;
> empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY;
> full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN;
> empty_design_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN;
> now_prop = POWER_SUPPLY_PROP_ENERGY_NOW;
> avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG;
> + case SOURCE_VOLTAGE:
> + full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX;
> + empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN;
> + full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN;
> + empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN;
> + now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW;
> + avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG;
> + break;
> + default:
> + printk(KERN_ERR "Unsupported source: %d\n", source);
> + return -1;
> }
>
> if (_MPSY_PROP(full_prop, &full)) {
> @@ -234,10 +267,12 @@ static void apm_battery_apm_get_power_status(struct apm_power_info *info)
> info->battery_life = capacity.intval;
> } else {
> /* try calculate using energy */
> - info->battery_life = calculate_capacity(0);
> + info->battery_life = calculate_capacity(SOURCE_ENERGY);
> /* if failed try calculate using charge instead */
> if (info->battery_life == -1)
> - info->battery_life = calculate_capacity(1);
> + info->battery_life = calculate_capacity(SOURCE_CHARGE);
> + if (info->battery_life == -1)
> + info->battery_life = calculate_capacity(SOURCE_VOLTAGE);
> }
>
> /* charging status */
> @@ -263,18 +298,22 @@ static void apm_battery_apm_get_power_status(struct apm_power_info *info)
> !MPSY_PROP(TIME_TO_FULL_NOW, &time_to_full)) {
> info->time = time_to_full.intval / 60;
> } else {
> - info->time = calculate_time(status.intval, 0);
> + info->time = calculate_time(status.intval, SOURCE_ENERGY);
> if (info->time == -1)
> - info->time = calculate_time(status.intval, 1);
> + info->time = calculate_time(status.intval, SOURCE_CHARGE);
> + if (info->time == -1)
> + info->time = calculate_time(status.intval, SOURCE_VOLTAGE);
> }
> } else {
> if (!MPSY_PROP(TIME_TO_EMPTY_AVG, &time_to_empty) ||
> !MPSY_PROP(TIME_TO_EMPTY_NOW, &time_to_empty)) {
> info->time = time_to_empty.intval / 60;
> } else {
> - info->time = calculate_time(status.intval, 0);
> + info->time = calculate_time(status.intval, SOURCE_ENERGY);
> + if (info->time == -1)
> + info->time = calculate_time(status.intval, SOURCE_CHARGE);
> if (info->time == -1)
> - info->time = calculate_time(status.intval, 1);
> + info->time = calculate_time(status.intval, SOURCE_VOLTAGE);
> }
> }
>
> --
> With best wishes
> Dmitry
>
--
Anton Vorontsov
email: cbou@...l.ru
backup email: ya-cbou@...dex.ru
irc://irc.freenode.net/bd2
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