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power_supply: Add battery health reporting for WM8350

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Implement support for reporting battery health in the WM8350 battery
interface. Since we are now able to report this via the classs remove
the diagnostics from the interrupt handler.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
Mark Brown 2008-11-30 22:45:14 +01:00 committed by Samuel Ortiz
parent 7e386e6e0e
commit 4008e879e1
3 changed files with 33 additions and 9 deletions
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2
drivers/mfd/wm8350-regmap.c
View File

@ -1314,7 +1314,7 @@ const struct wm8350_reg_access wm8350_reg_io_map[] = {
{ 0xFFFF, 0xFFFF, 0xFFFF }, /* R223 */
{ 0x0000, 0x0000, 0x0000 }, /* R224 */
{ 0x8F3F, 0x0000, 0xFFFF }, /* R225 - DCDC/LDO status */
{ 0x0000, 0x0000, 0x0000 }, /* R226 */
{ 0x0000, 0x0000, 0xFFFF }, /* R226 - Charger status */
{ 0x0000, 0x0000, 0xFFFF }, /* R227 */
{ 0x0000, 0x0000, 0x0000 }, /* R228 */
{ 0x0000, 0x0000, 0x0000 }, /* R229 */

33
drivers/power/wm8350_power.c
View File

@ -190,22 +190,18 @@ static void wm8350_charger_handler(struct wm8350 *wm8350, int irq, void *data)
struct wm8350_charger_policy *policy = power->policy;
switch (irq) {
case WM8350_IRQ_CHG_BAT_HOT:
dev_err(wm8350->dev, "battery too hot\n");
break;
case WM8350_IRQ_CHG_BAT_COLD:
dev_err(wm8350->dev, "battery too cold\n");
break;
case WM8350_IRQ_CHG_BAT_FAIL:
dev_err(wm8350->dev, "battery failed\n");
break;
case WM8350_IRQ_CHG_TO:
dev_err(wm8350->dev, "charger timeout\n");
break;
case WM8350_IRQ_CHG_END:
power_supply_changed(&power->battery);
break;
case WM8350_IRQ_CHG_BAT_HOT:
case WM8350_IRQ_CHG_BAT_COLD:
case WM8350_IRQ_CHG_START:
case WM8350_IRQ_CHG_END:
power_supply_changed(&power->battery);
break;
@ -308,6 +304,23 @@ static enum power_supply_property wm8350_usb_props[] = {
* Battery properties
*********************************************************************/
static int wm8350_bat_check_health(struct wm8350 *wm8350)
{
u16 reg;
if (wm8350_read_battery_uvolts(wm8350) < 2850000)
return POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
reg = wm8350_reg_read(wm8350, WM8350_CHARGER_OVERRIDES);
if (reg & WM8350_CHG_BATT_HOT_OVRDE)
return POWER_SUPPLY_HEALTH_OVERHEAT;
if (reg & WM8350_CHG_BATT_COLD_OVRDE)
return POWER_SUPPLY_HEALTH_COLD;
return POWER_SUPPLY_HEALTH_GOOD;
}
static int wm8350_bat_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@ -326,6 +339,9 @@ static int wm8350_bat_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = wm8350_read_battery_uvolts(wm8350);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = wm8350_bat_check_health(wm8350);
break;
default:
ret = -EINVAL;
break;
@ -338,6 +354,7 @@ static enum power_supply_property wm8350_bat_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_HEALTH,
};
/*********************************************************************

7
include/linux/mfd/wm8350/core.h
View File

@ -58,6 +58,7 @@
#define WM8350_OVER_CURRENT_INT_STATUS_MASK 0x25
#define WM8350_GPIO_INT_STATUS_MASK 0x26
#define WM8350_COMPARATOR_INT_STATUS_MASK 0x27
#define WM8350_CHARGER_OVERRIDES 0xE2
#define WM8350_MISC_OVERRIDES 0xE3
#define WM8350_COMPARATOR_OVERRIDES 0xE7
#define WM8350_STATE_MACHINE_STATUS 0xE9
@ -532,6 +533,12 @@
#define WM8350_DC2_STS 0x0002
#define WM8350_DC1_STS 0x0001
/*
* R226 (0xE2) - Charger status
*/
#define WM8350_CHG_BATT_HOT_OVRDE 0x8000
#define WM8350_CHG_BATT_COLD_OVRDE 0x4000
/*
* R227 (0xE3) - Misc Overrides
*/