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extcon: intel-mrfld: Sync hardware and software state on init

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commit ecb5bdff90 upstream.

extcon driver for Basin Cove PMIC shadows the switch status used for dwc3
DRD to detect a change in the switch position. This change initializes the
status at probe time.

Cc: stable@vger.kernel.org
Fixes: 492929c547 ("extcon: mrfld: Introduce extcon driver for Basin Cove PMIC")
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ferry Toth <ftoth@exalondelft.nl>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ferry Toth 2021-05-18 23:27:09 +02:00 committed by Greg Kroah-Hartman
parent af092ec16e
commit 418b333afb
1 changed files with 9 additions and 0 deletions
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9
drivers/extcon/extcon-intel-mrfld.c
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@ -197,6 +197,7 @@ static int mrfld_extcon_probe(struct platform_device *pdev)
struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent);
struct regmap *regmap = pmic->regmap;
struct mrfld_extcon_data *data;
unsigned int status;
unsigned int id;
int irq, ret;
@ -244,6 +245,14 @@ static int mrfld_extcon_probe(struct platform_device *pdev)
/* Get initial state */
mrfld_extcon_role_detect(data);
/*
* Cached status value is used for cable detection, see comments
* in mrfld_extcon_cable_detect(), we need to sync cached value
* with a real state of the hardware.
*/
regmap_read(regmap, BCOVE_SCHGRIRQ1, &status);
data->status = status;
mrfld_extcon_clear(data, BCOVE_MIRQLVL1, BCOVE_LVL1_CHGR);
mrfld_extcon_clear(data, BCOVE_MCHGRIRQ1, BCOVE_CHGRIRQ_ALL);