diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2022-02-01 14:07:02 +0100 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2022-02-01 14:55:12 +0100 |
| commit | b910a9cea8aa54d39275ebee8d0f04ff9656ab80 (patch) | |
| tree | f7ade02cc12d000aa47790371971e00dbdd13af8 /drivers/extcon | |
| parent | 4b32649140a175fbda3cb8683faff16c3f390533 (diff) | |
| download | linux-b910a9cea8aa54d39275ebee8d0f04ff9656ab80.tar.gz | |
extcon: intel-cht-wc: Use new cht_wc_model intel_soc_pmic field
The CHT_WC_VBUS_GPIO_CTLO GPIO actually driving an external 5V Vboost converter for Vbus depends on the board on which the Cherry Trail - Whiskey Cove PMIC is actually used. Since the information about the exact PMIC setup is necessary in other places too, struct intel_soc_pmic now has a new cht_wc_model field indicating the board model. Only poke the CHT_WC_VBUS_GPIO_CTLO GPIO if this new field is set to INTEL_CHT_WC_GPD_WIN_POCKET, which indicates the Type-C (with PD and DP-altmode) setup used on the GPD pocket and GPD win; and on which this GPIO actually controls an external 5V Vboost converter. Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/extcon')
| -rw-r--r-- | drivers/extcon/extcon-intel-cht-wc.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/extcon/extcon-intel-cht-wc.c b/drivers/extcon/extcon-intel-cht-wc.c index 771f6f4cf92e..81cae8c75850 100644 --- a/drivers/extcon/extcon-intel-cht-wc.c +++ b/drivers/extcon/extcon-intel-cht-wc.c @@ -14,6 +14,7 @@ #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/regmap.h> #include <linux/slab.h> @@ -358,20 +359,26 @@ static int cht_wc_extcon_probe(struct platform_device *pdev) if (IS_ERR(ext->edev)) return PTR_ERR(ext->edev); - /* - * When a host-cable is detected the BIOS enables an external 5v boost - * converter to power connected devices there are 2 problems with this: - * 1) This gets seen by the external battery charger as a valid Vbus - * supply and it then tries to feed Vsys from this creating a - * feedback loop which causes aprox. 300 mA extra battery drain - * (and unless we drive the external-charger-disable pin high it - * also tries to charge the battery causing even more feedback). - * 2) This gets seen by the pwrsrc block as a SDP USB Vbus supply - * Since the external battery charger has its own 5v boost converter - * which does not have these issues, we simply turn the separate - * external 5v boost converter off and leave it off entirely. - */ - cht_wc_extcon_set_5v_boost(ext, false); + switch (pmic->cht_wc_model) { + case INTEL_CHT_WC_GPD_WIN_POCKET: + /* + * When a host-cable is detected the BIOS enables an external 5v boost + * converter to power connected devices there are 2 problems with this: + * 1) This gets seen by the external battery charger as a valid Vbus + * supply and it then tries to feed Vsys from this creating a + * feedback loop which causes aprox. 300 mA extra battery drain + * (and unless we drive the external-charger-disable pin high it + * also tries to charge the battery causing even more feedback). + * 2) This gets seen by the pwrsrc block as a SDP USB Vbus supply + * Since the external battery charger has its own 5v boost converter + * which does not have these issues, we simply turn the separate + * external 5v boost converter off and leave it off entirely. + */ + cht_wc_extcon_set_5v_boost(ext, false); + break; + default: + break; + } /* Enable sw control */ ret = cht_wc_extcon_sw_control(ext, true); |