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power: reset: qcom-pon: add support for pm8941-pon

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For PM8941 we don't have a defined field to store the reset reason.
Support wrapping pwrkey and resin, but without writing the reset
reason.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Dmitry Baryshkov 2023-06-09 05:25:51 +03:00 committed by Sebastian Reichel
parent 7a54cf02d7
commit 4dea2fd6e8
1 changed files with 15 additions and 7 deletions
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22
drivers/power/reset/qcom-pon.c
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@ -17,6 +17,8 @@
#define GEN1_REASON_SHIFT 2
#define GEN2_REASON_SHIFT 1
#define NO_REASON_SHIFT 0
struct pm8916_pon {
struct device *dev;
struct regmap *regmap;
@ -45,6 +47,7 @@ static int pm8916_reboot_mode_write(struct reboot_mode_driver *reboot,
static int pm8916_pon_probe(struct platform_device *pdev)
{
struct pm8916_pon *pon;
long reason_shift;
int error;
pon = devm_kzalloc(&pdev->dev, sizeof(*pon), GFP_KERNEL);
@ -64,13 +67,17 @@ static int pm8916_pon_probe(struct platform_device *pdev)
if (error)
return error;
pon->reboot_mode.dev = &pdev->dev;
pon->reason_shift = (long)of_device_get_match_data(&pdev->dev);
pon->reboot_mode.write = pm8916_reboot_mode_write;
error = devm_reboot_mode_register(&pdev->dev, &pon->reboot_mode);
if (error) {
dev_err(&pdev->dev, "can't register reboot mode\n");
return error;
reason_shift = (long)of_device_get_match_data(&pdev->dev);
if (reason_shift != NO_REASON_SHIFT) {
pon->reboot_mode.dev = &pdev->dev;
pon->reason_shift = reason_shift;
pon->reboot_mode.write = pm8916_reboot_mode_write;
error = devm_reboot_mode_register(&pdev->dev, &pon->reboot_mode);
if (error) {
dev_err(&pdev->dev, "can't register reboot mode\n");
return error;
}
}
platform_set_drvdata(pdev, pon);
@ -80,6 +87,7 @@ static int pm8916_pon_probe(struct platform_device *pdev)
static const struct of_device_id pm8916_pon_id_table[] = {
{ .compatible = "qcom,pm8916-pon", .data = (void *)GEN1_REASON_SHIFT },
{ .compatible = "qcom,pm8941-pon", .data = (void *)NO_REASON_SHIFT },
{ .compatible = "qcom,pms405-pon", .data = (void *)GEN1_REASON_SHIFT },
{ .compatible = "qcom,pm8998-pon", .data = (void *)GEN2_REASON_SHIFT },
{ .compatible = "qcom,pmk8350-pon", .data = (void *)GEN2_REASON_SHIFT },