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Input: pm8941-pwrkey - add support for PMK8350 PON_HLOS PMIC peripheral

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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@codeaurora.org>
Signed-off-by: satya priya <skakit@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1620630064-16354-2-git-send-email-skakit@codeaurora.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
David Collins 2021-06-01 21:34:16 -07:00 committed by Dmitry Torokhov
parent 595c238a8c
commit 2fcbda9a82
1 changed files with 70 additions and 29 deletions
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99
drivers/input/misc/pm8941-pwrkey.c
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@ -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";
pwrkey->input->name = pwrkey->data->name;
pwrkey->input->phys = pwrkey->data->phys;
req_delay = (req_delay << 6) / USEC_PER_SEC;
req_delay = ilog2(req_delay);
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_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);