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Date: Sun, 24 Nov 2013 17:49:30 +0100
From: Sebastian Reichel <sre@...ian.org>
To: Sebastian Reichel <sre@...g0.de>,
Anton Vorontsov <anton@...msg.org>,
David Woodhouse <dwmw2@...radead.org>
Cc: Rob Herring <rob.herring@...xeda.com>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Stephen Warren <swarren@...dotorg.org>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Rob Landley <rob@...dley.net>, linux-kernel@...r.kernel.org,
linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
Pali Rohár <pali.rohar@...il.com>,
freemangordon@....bg, aaro.koskinen@....fi, pavel@....cz,
Sebastian Reichel <sre@...ian.org>
Subject: [PATCH 2/3] bq2415x_charger: add DT support
This adds DT support to the bq2415x driver.
Signed-off-by: Sebastian Reichel <sre@...ian.org>
---
drivers/power/bq2415x_charger.c | 72 +++++++++++++++++++++++++++++------------
1 file changed, 52 insertions(+), 20 deletions(-)
diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c
index d89583d..76a140c 100644
--- a/drivers/power/bq2415x_charger.c
+++ b/drivers/power/bq2415x_charger.c
@@ -170,6 +170,7 @@ struct bq2415x_device {
struct bq2415x_platform_data init_data;
struct power_supply charger;
struct delayed_work work;
+ struct power_supply *notify_psy;
struct notifier_block nb;
enum bq2415x_mode reported_mode;/* mode reported by hook function */
enum bq2415x_mode mode; /* current configured mode */
@@ -806,7 +807,7 @@ static int bq2415x_notifier_call(struct notifier_block *nb,
if (val != PSY_EVENT_PROP_CHANGED)
return NOTIFY_OK;
- if (strcmp(psy->name, bq->init_data.notify_device) != 0)
+ if (psy != bq->notify_psy)
return NOTIFY_OK;
dev_dbg(bq->dev, "notifier call was called\n");
@@ -1538,10 +1539,11 @@ static int bq2415x_probe(struct i2c_client *client,
int num;
char *name;
struct bq2415x_device *bq;
- struct power_supply *psy;
+ struct device_node *np = client->dev.of_node;
+ struct bq2415x_platform_data *pdata = client->dev.platform_data;
- if (!client->dev.platform_data) {
- dev_err(&client->dev, "platform data not set\n");
+ if (!np && !pdata) {
+ dev_err(&client->dev, "platform data missing\n");
return -ENODEV;
}
@@ -1566,6 +1568,17 @@ static int bq2415x_probe(struct i2c_client *client,
goto error_2;
}
+ if (np) {
+ bq->notify_psy = power_supply_get_by_phandle(np, "ti,usb-charger-detection");
+
+ if (!bq->notify_psy)
+ return -EPROBE_DEFER;
+ }
+ else if (pdata->notify_device)
+ bq->notify_psy = power_supply_get_by_name(pdata->notify_device);
+ else
+ bq->notify_psy = NULL;
+
i2c_set_clientdata(client, bq);
bq->id = num;
@@ -1577,8 +1590,34 @@ static int bq2415x_probe(struct i2c_client *client,
bq->autotimer = 0;
bq->automode = 0;
- memcpy(&bq->init_data, client->dev.platform_data,
- sizeof(bq->init_data));
+ if (np) {
+ ret = of_property_read_u32(np, "ti,current-limit",
+ &bq->init_data.current_limit);
+ if (ret)
+ return ret;
+ ret = of_property_read_u32(np, "ti,weak-battery-voltage",
+ &bq->init_data.weak_battery_voltage);
+ if (ret)
+ return ret;
+ ret = of_property_read_u32(np, "ti,battery-regulation-voltage",
+ &bq->init_data.battery_regulation_voltage);
+ if (ret)
+ return ret;
+ ret = of_property_read_u32(np, "ti,charge-current",
+ &bq->init_data.charge_current);
+ if (ret)
+ return ret;
+ ret = of_property_read_u32(np, "ti,termination-current",
+ &bq->init_data.termination_current);
+ if (ret)
+ return ret;
+ ret = of_property_read_u32(np, "ti,resistor-sense",
+ &bq->init_data.resistor_sense);
+ if (ret)
+ return ret;
+ } else {
+ memcpy(&bq->init_data, pdata, sizeof(bq->init_data));
+ }
bq2415x_reset_chip(bq);
@@ -1600,25 +1639,18 @@ static int bq2415x_probe(struct i2c_client *client,
goto error_4;
}
- if (bq->init_data.notify_device) {
+ if (bq->notify_psy) {
bq->nb.notifier_call = bq2415x_notifier_call;
ret = power_supply_reg_notifier(&bq->nb);
if (ret) {
dev_err(bq->dev, "failed to reg notifier: %d\n", ret);
goto error_5;
}
- psy = power_supply_get_by_name(bq->init_data.notify_device);
- if (psy) {
- /* Query for initial reported_mode and set it */
- bq2415x_notifier_call(&bq->nb,
- PSY_EVENT_PROP_CHANGED, psy);
- bq2415x_set_mode(bq, bq->reported_mode);
- } else {
- dev_info(bq->dev, "notifier power supply device (%s) "
- "for automode is not registred yet... "
- "automode will not work without that device\n",
- bq->init_data.notify_device);
- }
+
+ /* Query for initial reported_mode and set it */
+ bq2415x_notifier_call(&bq->nb, PSY_EVENT_PROP_CHANGED, bq->notify_psy);
+ bq2415x_set_mode(bq, bq->reported_mode);
+
bq->automode = 1;
dev_info(bq->dev, "automode enabled\n");
} else {
@@ -1653,7 +1685,7 @@ static int bq2415x_remove(struct i2c_client *client)
{
struct bq2415x_device *bq = i2c_get_clientdata(client);
- if (bq->init_data.notify_device)
+ if (bq->notify_psy)
power_supply_unreg_notifier(&bq->nb);
bq2415x_sysfs_exit(bq);
--
1.8.4.3
--
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