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extcon: intel-cht-wc: Use new cht_wc_model intel_soc_pmic field

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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>
This commit is contained in:
Hans de Goede 2022-02-01 14:07:02 +01:00 committed by Sebastian Reichel
parent 4b32649140
commit b910a9cea8
1 changed files with 21 additions and 14 deletions
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35
drivers/extcon/extcon-intel-cht-wc.c
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@ -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);