From: "Guido Günther" <agx@sigxcpu.org>
To: Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Pavel Machek <pavel@ucw.cz>, Dan Murphy <dmurphy@ti.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/6] leds: lm3692x: Allow to configure over voltage protection
Date: Wed, 25 Dec 2019 12:07:15 +0100 [thread overview]
Message-ID: <5ee465d90bb71dc63e9fb2b794fd898eb6726fc4.1577271823.git.agx@sigxcpu.org> (raw)
In-Reply-To: <cover.1577271823.git.agx@sigxcpu.org>
Overvoltage protection is currently using the default of 29V. Make it
configurable via DT.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
---
drivers/leds/leds-lm3692x.c | 34 ++++++++++++++++++++++++++++++----
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index 8b408102e138..28973cc5a6cc 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -114,6 +114,8 @@ struct lm3692x_led {
struct regulator *regulator;
int led_enable;
int model_id;
+
+ u8 boost_ctrl;
};
static const struct reg_default lm3692x_reg_defs[] = {
@@ -249,10 +251,7 @@ static int lm3692x_init(struct lm3692x_led *led)
if (ret)
goto out;
- ret = regmap_write(led->regmap, LM3692X_BOOST_CTRL,
- LM3692X_BOOST_SW_1MHZ |
- LM3692X_BOOST_SW_NO_SHIFT |
- LM3692X_OCP_PROT_1_5A);
+ ret = regmap_write(led->regmap, LM3692X_BOOST_CTRL, led->boost_ctrl);
if (ret)
goto out;
@@ -326,6 +325,7 @@ static int lm3692x_probe_dt(struct lm3692x_led *led)
{
struct fwnode_handle *child = NULL;
struct led_init_data init_data = {};
+ u32 ovp;
int ret;
led->enable_gpio = devm_gpiod_get_optional(&led->client->dev,
@@ -350,6 +350,32 @@ static int lm3692x_probe_dt(struct lm3692x_led *led)
led->regulator = NULL;
}
+ led->boost_ctrl = LM3692X_BOOST_SW_1MHZ |
+ LM3692X_BOOST_SW_NO_SHIFT |
+ LM3692X_OCP_PROT_1_5A;
+ ret = device_property_read_u32(&led->client->dev,
+ "ti,ovp-microvolt", &ovp);
+ if (ret) {
+ led->boost_ctrl |= LM3692X_OVP_29V;
+ } else {
+ switch (ovp) {
+ case 17000000:
+ break;
+ case 21000000:
+ led->boost_ctrl |= LM3692X_OVP_21V;
+ break;
+ case 25000000:
+ led->boost_ctrl |= LM3692X_OVP_25V;
+ break;
+ case 29000000:
+ led->boost_ctrl |= LM3692X_OVP_29V;
+ break;
+ default:
+ dev_err(&led->client->dev, "Invalid OVP %d\n", ovp);
+ return -EINVAL;
+ }
+ }
+
child = device_get_next_child_node(&led->client->dev, child);
if (!child) {
dev_err(&led->client->dev, "No LED Child node\n");
--
2.23.0
next prev parent reply other threads:[~2019-12-25 11:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-25 11:07 [PATCH v2 0/6] leds: lm3692x: Allow to set ovp and brigthness mode Guido Günther
2019-12-25 11:07 ` [PATCH v2 1/6] dt: bindings: lm3692x: Add ti,ovp-microvolt property Guido Günther
2019-12-26 10:06 ` Pavel Machek
2019-12-27 12:17 ` Guido Günther
2019-12-25 11:07 ` Guido Günther [this message]
2019-12-26 10:07 ` [PATCH v2 2/6] leds: lm3692x: Allow to configure over voltage protection Pavel Machek
2019-12-25 11:07 ` [PATCH v2 3/6] dt: bindings: lm3692x: Add ti,brightness-mapping-exponential property Guido Günther
2019-12-25 11:07 ` [PATCH v2 4/6] leds: lm3692x: Allow to configure brigthness mode Guido Günther
2019-12-25 11:07 ` [PATCH v2 5/6] dt: bindings: lm3692x: Add led-max-microamp property Guido Günther
2019-12-26 10:08 ` Pavel Machek
2019-12-25 11:07 ` [PATCH v2 6/6] leds: lm3692x: Make sure we don't exceed the maximum led current Guido Günther
2019-12-26 10:13 ` Pavel Machek
2019-12-27 12:59 ` Guido Günther
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