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power: supply: twl4030_charger: disable eoc interrupt on linear charge

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This avoids getting woken up from suspend after power interruptions
when the bci wrongly thinks the battery is full just because
of input current going low because of low input power

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Andreas Kemnade 2018-09-17 07:00:07 +02:00 committed by Sebastian Reichel
parent 8314c212f9
commit 079cdff3d0
1 changed files with 26 additions and 1 deletions
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27
drivers/power/supply/twl4030_charger.c
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@ -440,6 +440,7 @@ static void twl4030_current_worker(struct work_struct *data)
static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable)
{
int ret;
u32 reg;
if (bci->usb_mode == CHARGE_OFF)
enable = false;
@ -453,14 +454,38 @@ static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable)
bci->usb_enabled = 1;
}
if (bci->usb_mode == CHARGE_AUTO)
if (bci->usb_mode == CHARGE_AUTO) {
/* Enable interrupts now. */
reg = ~(u32)(TWL4030_ICHGLOW | TWL4030_ICHGEOC |
TWL4030_TBATOR2 | TWL4030_TBATOR1 |
TWL4030_BATSTS);
ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
TWL4030_INTERRUPTS_BCIIMR1A);
if (ret < 0) {
dev_err(bci->dev,
"failed to unmask interrupts: %d\n",
ret);
return ret;
}
/* forcing the field BCIAUTOUSB (BOOT_BCI[1]) to 1 */
ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOUSB);
}
/* forcing USBFASTMCHG(BCIMFSTS4[2]) to 1 */
ret = twl4030_clear_set(TWL_MODULE_MAIN_CHARGE, 0,
TWL4030_USBFASTMCHG, TWL4030_BCIMFSTS4);
if (bci->usb_mode == CHARGE_LINEAR) {
/* Enable interrupts now. */
reg = ~(u32)(TWL4030_ICHGLOW | TWL4030_TBATOR2 |
TWL4030_TBATOR1 | TWL4030_BATSTS);
ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
TWL4030_INTERRUPTS_BCIIMR1A);
if (ret < 0) {
dev_err(bci->dev,
"failed to unmask interrupts: %d\n",
ret);
return ret;
}
twl4030_clear_set_boot_bci(TWL4030_BCIAUTOAC|TWL4030_CVENAC, 0);
/* Watch dog key: WOVF acknowledge */
ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x33,