From: Luca Weiss <luca@z3ntu.xyz>
To: ~postmarketos/upstreaming@lists.sr.ht,
phone-devel@vger.kernel.org,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Sebastian Reichel <sre@kernel.org>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Brian Masney <masneyb@onstation.org>
Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Luca Weiss <luca@z3ntu.xyz>
Subject: [PATCH 3/4] Input: pwm-vibra - add support for enable GPIO
Date: Thu, 27 Apr 2023 22:34:28 +0200 [thread overview]
Message-ID: <20230427-hammerhead-vibra-v1-3-e87eeb94da51@z3ntu.xyz> (raw)
In-Reply-To: <20230427-hammerhead-vibra-v1-0-e87eeb94da51@z3ntu.xyz>
Some pwm vibrators have a dedicated enable GPIO that needs to be set
high so that the vibrator works. Add support for that optionally.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
drivers/input/misc/pwm-vibra.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/input/misc/pwm-vibra.c b/drivers/input/misc/pwm-vibra.c
index c08971c97ad6..2ba035299db8 100644
--- a/drivers/input/misc/pwm-vibra.c
+++ b/drivers/input/misc/pwm-vibra.c
@@ -11,6 +11,7 @@
* Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
*/
+#include <linux/gpio/consumer.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -23,6 +24,7 @@
struct pwm_vibrator {
struct input_dev *input;
+ struct gpio_desc *enable_gpio;
struct pwm_device *pwm;
struct pwm_device *pwm_dir;
struct regulator *vcc;
@@ -48,6 +50,8 @@ static int pwm_vibrator_start(struct pwm_vibrator *vibrator)
vibrator->vcc_on = true;
}
+ gpiod_set_value_cansleep(vibrator->enable_gpio, 1);
+
pwm_get_state(vibrator->pwm, &state);
pwm_set_relative_duty_cycle(&state, vibrator->level, 0xffff);
state.enabled = true;
@@ -80,6 +84,8 @@ static void pwm_vibrator_stop(struct pwm_vibrator *vibrator)
pwm_disable(vibrator->pwm_dir);
pwm_disable(vibrator->pwm);
+ gpiod_set_value_cansleep(vibrator->enable_gpio, 0);
+
if (vibrator->vcc_on) {
regulator_disable(vibrator->vcc);
vibrator->vcc_on = false;
@@ -142,6 +148,16 @@ static int pwm_vibrator_probe(struct platform_device *pdev)
return err;
}
+ vibrator->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable",
+ GPIOD_OUT_LOW);
+ err = PTR_ERR_OR_ZERO(vibrator->enable_gpio);
+ if (err) {
+ if (err != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "Failed to request enable gpio: %d\n",
+ err);
+ return err;
+ }
+
vibrator->pwm = devm_pwm_get(&pdev->dev, "enable");
err = PTR_ERR_OR_ZERO(vibrator->pwm);
if (err) {
--
2.40.0
next prev parent reply other threads:[~2023-04-27 20:35 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-27 20:34 [PATCH 0/4] Add haptics support to Nexus 5 using pwm-vibra driver Luca Weiss
2023-04-27 20:34 ` [PATCH 1/4] dt-bindings: input: pwm-vibrator: Add enable-gpio Luca Weiss
2023-04-27 23:29 ` Brian Masney
2023-04-28 10:10 ` Caleb Connolly
2023-04-29 19:44 ` Sebastian Reichel
2023-05-01 6:48 ` Krzysztof Kozlowski
2023-04-27 20:34 ` [PATCH 2/4] Input: pwm-vibra - add newline to dev_err prints Luca Weiss
2023-04-27 23:30 ` Brian Masney
2023-04-28 10:10 ` Caleb Connolly
2023-04-29 19:45 ` Sebastian Reichel
2023-04-27 20:34 ` Luca Weiss [this message]
2023-04-27 23:29 ` [PATCH 3/4] Input: pwm-vibra - add support for enable GPIO Brian Masney
2023-04-28 16:06 ` Luca Weiss
2023-04-28 16:11 ` Brian Masney
2023-05-02 10:39 ` Konrad Dybcio
2023-05-02 15:24 ` Luca Weiss
2023-04-28 10:11 ` Caleb Connolly
2023-04-29 19:47 ` Sebastian Reichel
2023-05-02 0:47 ` Dmitry Torokhov
2023-05-02 15:35 ` Luca Weiss
2023-04-27 20:34 ` [PATCH 4/4] ARM: dts: qcom: msm8974-hammerhead: Add vibrator Luca Weiss
2023-04-27 23:34 ` Brian Masney
2023-04-28 10:11 ` Caleb Connolly
2023-05-02 10:40 ` Konrad Dybcio
2023-05-02 15:28 ` Luca Weiss
2023-05-02 15:31 ` Konrad Dybcio
2023-05-08 16:44 ` [PATCH 0/4] Add haptics support to Nexus 5 using pwm-vibra driver Dmitry Torokhov
2023-05-25 4:54 ` (subset) " Bjorn Andersson
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