From: David Collins <collinsd@xxxxxxxxxxxxxx>
On Qualcomm Technologies, Inc. PMIC PMK8350, the PON peripheral
is split into two peripherals: PON_HLOS and PON_PBS. The
application processor only has write access to PON_HLOS which
limits it to only receiving PON interrupts.
Add support for the PMK8350 PON_HLOS peripheral so that its
KPDPWR_N and RESIN_N interrupts can be used to detect key
presses.
Signed-off-by: David Collins <collinsd@xxxxxxxxxxxxxx>
Signed-off-by: satya priya <skakit@xxxxxxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
Changes in V2:
- No change.
Changes in V3:
- No change.
Changes in V4:
- No change.
drivers/input/misc/pm8941-pwrkey.c | 103 ++++++++++++++++++++++++++-----------
1 file changed, 72 insertions(+), 31 deletions(-)
diff --git a/drivers/input/misc/pm8941-pwrkey.c b/drivers/input/misc/pm8941-pwrkey.c
index cf81044..10e3fc0 100644
--- a/drivers/input/misc/pm8941-pwrkey.c
+++ b/drivers/input/misc/pm8941-pwrkey.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2010-2011, 2020-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2014, Sony Mobile Communications Inc.
*/
@@ -22,6 +22,8 @@
#define PON_RT_STS 0x10
#define PON_KPDPWR_N_SET BIT(0)
#define PON_RESIN_N_SET BIT(1)
+#define PON_GEN3_RESIN_N_SET BIT(6)
+#define PON_GEN3_KPDPWR_N_SET BIT(7)
#define PON_PS_HOLD_RST_CTL 0x5a
#define PON_PS_HOLD_RST_CTL2 0x5b
@@ -38,8 +40,12 @@
#define PON_DBC_DELAY_MASK 0x7
struct pm8941_data {
- unsigned int pull_up_bit;
- unsigned int status_bit;
+ unsigned int pull_up_bit;
+ unsigned int status_bit;
+ bool supports_ps_hold_poff_config;
+ bool supports_debounce_config;
+ const char *name;
+ const char *phys;
};
struct pm8941_pwrkey {
@@ -231,34 +237,40 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev)
input_set_capability(pwrkey->input, EV_KEY, pwrkey->code);
- pwrkey->input->name = "pm8941_pwrkey";
- pwrkey->input->phys = "pm8941_pwrkey/input0";
-
- req_delay = (req_delay << 6) / USEC_PER_SEC;
- req_delay = ilog2(req_delay);
-
- error = regmap_update_bits(pwrkey->regmap,
- pwrkey->baseaddr + PON_DBC_CTL,
- PON_DBC_DELAY_MASK,
- req_delay);
- if (error) {
- dev_err(&pdev->dev, "failed to set debounce: %d\n", error);
- return error;
+ pwrkey->input->name = pwrkey->data->name;
+ pwrkey->input->phys = pwrkey->data->phys;
+
+ if (pwrkey->data->supports_debounce_config) {
+ req_delay = (req_delay << 6) / USEC_PER_SEC;
+ req_delay = ilog2(req_delay);
+
+ error = regmap_update_bits(pwrkey->regmap,
+ pwrkey->baseaddr + PON_DBC_CTL,
+ PON_DBC_DELAY_MASK,
+ req_delay);
+ if (error) {
+ dev_err(&pdev->dev, "failed to set debounce: %d\n",
+ error);
+ return error;
+ }
}
- error = regmap_update_bits(pwrkey->regmap,
- pwrkey->baseaddr + PON_PULL_CTL,
- pwrkey->data->pull_up_bit,
- pull_up ? pwrkey->data->pull_up_bit : 0);
- if (error) {
- dev_err(&pdev->dev, "failed to set pull: %d\n", error);
- return error;
+ if (pwrkey->data->pull_up_bit) {
+ error = regmap_update_bits(pwrkey->regmap,
+ pwrkey->baseaddr + PON_PULL_CTL,
+ pwrkey->data->pull_up_bit,
+ pull_up ? pwrkey->data->pull_up_bit :
+ 0);
+ if (error) {
+ dev_err(&pdev->dev, "failed to set pull: %d\n", error);
+ return error;
+ }
}
error = devm_request_threaded_irq(&pdev->dev, pwrkey->irq,
NULL, pm8941_pwrkey_irq,
IRQF_ONESHOT,
- "pm8941_pwrkey", pwrkey);
+ pwrkey->data->name, pwrkey);
if (error) {
dev_err(&pdev->dev, "failed requesting IRQ: %d\n", error);
return error;
@@ -271,12 +283,14 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev)
return error;
}
- pwrkey->reboot_notifier.notifier_call = pm8941_reboot_notify,
- error = register_reboot_notifier(&pwrkey->reboot_notifier);
- if (error) {
- dev_err(&pdev->dev, "failed to register reboot notifier: %d\n",
- error);
- return error;
+ if (pwrkey->data->supports_ps_hold_poff_config) {
+ pwrkey->reboot_notifier.notifier_call = pm8941_reboot_notify,
+ error = register_reboot_notifier(&pwrkey->reboot_notifier);
+ if (error) {
+ dev_err(&pdev->dev, "failed to register reboot notifier: %d\n",
+ error);
+ return error;
+ }
}
platform_set_drvdata(pdev, pwrkey);
@@ -289,7 +303,8 @@ static int pm8941_pwrkey_remove(struct platform_device *pdev)
{
struct pm8941_pwrkey *pwrkey = platform_get_drvdata(pdev);
- unregister_reboot_notifier(&pwrkey->reboot_notifier);
+ if (pwrkey->data->supports_ps_hold_poff_config)
+ unregister_reboot_notifier(&pwrkey->reboot_notifier);
return 0;
}
@@ -297,16 +312,42 @@ static int pm8941_pwrkey_remove(struct platform_device *pdev)
static const struct pm8941_data pwrkey_data = {
.pull_up_bit = PON_KPDPWR_PULL_UP,
.status_bit = PON_KPDPWR_N_SET,
+ .name = "pm8941_pwrkey",
+ .phys = "pm8941_pwrkey/input0",
+ .supports_ps_hold_poff_config = true,
+ .supports_debounce_config = true,
};
static const struct pm8941_data resin_data = {
.pull_up_bit = PON_RESIN_PULL_UP,
.status_bit = PON_RESIN_N_SET,
+ .name = "pm8941_resin",
+ .phys = "pm8941_resin/input0",
+ .supports_ps_hold_poff_config = true,
+ .supports_debounce_config = true,
+};
+
+static const struct pm8941_data pon_gen3_pwrkey_data = {
+ .status_bit = PON_GEN3_KPDPWR_N_SET,
+ .name = "pmic_pwrkey",
+ .phys = "pmic_pwrkey/input0",
+ .supports_ps_hold_poff_config = false,
+ .supports_debounce_config = false,
+};
+
+static const struct pm8941_data pon_gen3_resin_data = {
+ .status_bit = PON_GEN3_RESIN_N_SET,
+ .name = "pmic_resin",
+ .phys = "pmic_resin/input0",
+ .supports_ps_hold_poff_config = false,
+ .supports_debounce_config = false,
};
static const struct of_device_id pm8941_pwr_key_id_table[] = {
{ .compatible = "qcom,pm8941-pwrkey", .data = &pwrkey_data },
{ .compatible = "qcom,pm8941-resin", .data = &resin_data },
+ { .compatible = "qcom,pmk8350-pwrkey", .data = &pon_gen3_pwrkey_data },
+ { .compatible = "qcom,pmk8350-resin", .data = &pon_gen3_resin_data },
{ }
};
MODULE_DEVICE_TABLE(of, pm8941_pwr_key_id_table);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
