leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
drivers/input/misc/pm8941-pwrkey.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only // 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. * Copyright (c) 2014, Sony Mobile Communications Inc.
*/ */
@ -22,6 +22,8 @@
#define PON_RT_STS 0x10 #define PON_RT_STS 0x10
#define PON_KPDPWR_N_SET BIT(0) #define PON_KPDPWR_N_SET BIT(0)
#define PON_RESIN_N_SET BIT(1) #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_CTL 0x5a
#define PON_PS_HOLD_RST_CTL2 0x5b #define PON_PS_HOLD_RST_CTL2 0x5b
@ -40,6 +42,10 @@
struct pm8941_data { struct pm8941_data {
unsigned int pull_up_bit; unsigned int pull_up_bit;
unsigned int status_bit; unsigned int status_bit;
bool supports_ps_hold_poff_config;
bool supports_debounce_config;
const char *name;
const char *phys;
}; };
struct pm8941_pwrkey { struct pm8941_pwrkey {
@ -231,9 +237,10 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev)
input_set_capability(pwrkey->input, EV_KEY, pwrkey->code); input_set_capability(pwrkey->input, EV_KEY, pwrkey->code);
pwrkey->input->name = "pm8941_pwrkey"; pwrkey->input->name = pwrkey->data->name;
pwrkey->input->phys = "pm8941_pwrkey/input0"; pwrkey->input->phys = pwrkey->data->phys;
if (pwrkey->data->supports_debounce_config) {
req_delay = (req_delay << 6) / USEC_PER_SEC; req_delay = (req_delay << 6) / USEC_PER_SEC;
req_delay = ilog2(req_delay); req_delay = ilog2(req_delay);
@ -242,23 +249,28 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev)
PON_DBC_DELAY_MASK, PON_DBC_DELAY_MASK,
req_delay); req_delay);
if (error) { if (error) {
dev_err(&pdev->dev, "failed to set debounce: %d\n", error); dev_err(&pdev->dev, "failed to set debounce: %d\n",
error);
return error; return error;
} }
}
if (pwrkey->data->pull_up_bit) {
error = regmap_update_bits(pwrkey->regmap, error = regmap_update_bits(pwrkey->regmap,
pwrkey->baseaddr + PON_PULL_CTL, pwrkey->baseaddr + PON_PULL_CTL,
pwrkey->data->pull_up_bit, pwrkey->data->pull_up_bit,
pull_up ? pwrkey->data->pull_up_bit : 0); pull_up ? pwrkey->data->pull_up_bit :
0);
if (error) { if (error) {
dev_err(&pdev->dev, "failed to set pull: %d\n", error); dev_err(&pdev->dev, "failed to set pull: %d\n", error);
return error; return error;
} }
}
error = devm_request_threaded_irq(&pdev->dev, pwrkey->irq, error = devm_request_threaded_irq(&pdev->dev, pwrkey->irq,
NULL, pm8941_pwrkey_irq, NULL, pm8941_pwrkey_irq,
IRQF_ONESHOT, IRQF_ONESHOT,
"pm8941_pwrkey", pwrkey); pwrkey->data->name, pwrkey);
if (error) { if (error) {
dev_err(&pdev->dev, "failed requesting IRQ: %d\n", error); dev_err(&pdev->dev, "failed requesting IRQ: %d\n", error);
return error; return error;
@ -271,6 +283,7 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev)
return error; return error;
} }
if (pwrkey->data->supports_ps_hold_poff_config) {
pwrkey->reboot_notifier.notifier_call = pm8941_reboot_notify, pwrkey->reboot_notifier.notifier_call = pm8941_reboot_notify,
error = register_reboot_notifier(&pwrkey->reboot_notifier); error = register_reboot_notifier(&pwrkey->reboot_notifier);
if (error) { if (error) {
@ -278,6 +291,7 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev)
error); error);
return error; return error;
} }
}
platform_set_drvdata(pdev, pwrkey); platform_set_drvdata(pdev, pwrkey);
device_init_wakeup(&pdev->dev, 1); device_init_wakeup(&pdev->dev, 1);
@ -289,6 +303,7 @@ static int pm8941_pwrkey_remove(struct platform_device *pdev)
{ {
struct pm8941_pwrkey *pwrkey = platform_get_drvdata(pdev); struct pm8941_pwrkey *pwrkey = platform_get_drvdata(pdev);
if (pwrkey->data->supports_ps_hold_poff_config)
unregister_reboot_notifier(&pwrkey->reboot_notifier); unregister_reboot_notifier(&pwrkey->reboot_notifier);
return 0; return 0;
@ -297,16 +312,42 @@ static int pm8941_pwrkey_remove(struct platform_device *pdev)
static const struct pm8941_data pwrkey_data = { static const struct pm8941_data pwrkey_data = {
.pull_up_bit = PON_KPDPWR_PULL_UP, .pull_up_bit = PON_KPDPWR_PULL_UP,
.status_bit = PON_KPDPWR_N_SET, .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 = { static const struct pm8941_data resin_data = {
.pull_up_bit = PON_RESIN_PULL_UP, .pull_up_bit = PON_RESIN_PULL_UP,
.status_bit = PON_RESIN_N_SET, .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[] = { static const struct of_device_id pm8941_pwr_key_id_table[] = {
{ .compatible = "qcom,pm8941-pwrkey", .data = &pwrkey_data }, { .compatible = "qcom,pm8941-pwrkey", .data = &pwrkey_data },
{ .compatible = "qcom,pm8941-resin", .data = &resin_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); MODULE_DEVICE_TABLE(of, pm8941_pwr_key_id_table);