diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2021-07-31 20:38:38 +0300 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2021-08-16 18:57:02 +0300 |
| commit | efe2175478d5237949e33c84d9a722fc084b218c (patch) | |
| tree | 1b7fb09b32517b39f6ef80c852c4c57b200e9326 /drivers/power/supply | |
| parent | 17e7bc532cd540d0e6e2fa1af19faf74ba252051 (diff) | |
| download | linux-efe2175478d5237949e33c84d9a722fc084b218c.tar.xz | |
power: supply: smb347-charger: Add missing pin control activation
Pin control needs to be activated by setting the enable bit, otherwise
hardware rejects all pin changes. Previously this stayed unnoticed on
Nexus 7 because pin control was enabled by default after rebooting from
downstream kernel, which uses driver that enables the bit and charger
registers are non-volatile until power supply (battery) is disconnected.
Configure the pin control enable bit. This fixes the potentially
never-enabled charging on devices that use pin control.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power/supply')
| -rw-r--r-- | drivers/power/supply/smb347-charger.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/power/supply/smb347-charger.c b/drivers/power/supply/smb347-charger.c index 27254e6efdde..1c9205ca0993 100644 --- a/drivers/power/supply/smb347-charger.c +++ b/drivers/power/supply/smb347-charger.c @@ -55,6 +55,7 @@ #define CFG_PIN_EN_CTRL_ACTIVE_LOW 0x60 #define CFG_PIN_EN_APSD_IRQ BIT(1) #define CFG_PIN_EN_CHARGER_ERROR BIT(2) +#define CFG_PIN_EN_CTRL BIT(4) #define CFG_THERM 0x07 #define CFG_THERM_SOFT_HOT_COMPENSATION_MASK 0x03 #define CFG_THERM_SOFT_HOT_COMPENSATION_SHIFT 0 @@ -726,6 +727,15 @@ static int smb347_hw_init(struct smb347_charger *smb) if (ret < 0) goto fail; + /* Activate pin control, making it writable. */ + switch (smb->enable_control) { + case SMB3XX_CHG_ENABLE_PIN_ACTIVE_LOW: + case SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH: + ret = regmap_set_bits(smb->regmap, CFG_PIN, CFG_PIN_EN_CTRL); + if (ret < 0) + goto fail; + } + /* * Make the charging functionality controllable by a write to the * command register unless pin control is specified in the platform |