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authorRoland Stigge <stigge@antcom.de>2012-11-15 14:59:40 +0100
committerLinus Walleij <linus.walleij@linaro.org>2012-11-17 21:21:08 +0100
commit8754fccbae661a0020923cffd63e21de36d51e2e (patch)
tree13ce37d4afc0173e30d01d0c6ec9e1d29a40a4c6 /drivers/gpio
parent9859eb99e9212339e2009b98c396b08260276edf (diff)
gpio: gpio-max710x: Support device tree probing
For probing via device tree, we need to support the case without platform_data. In this case, chip.base is set to -1 for automatic numbering. Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-max730x.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-max730x.c b/drivers/gpio/gpio-max730x.c
index 05e2dac60b3..c4bf86abd4d 100644
--- a/drivers/gpio/gpio-max730x.c
+++ b/drivers/gpio/gpio-max730x.c
@@ -167,10 +167,6 @@ int __devinit __max730x_probe(struct max7301 *ts)
int i, ret;
pdata = dev->platform_data;
- if (!pdata || !pdata->base) {
- dev_err(dev, "incorrect or missing platform data\n");
- return -EINVAL;
- }
mutex_init(&ts->lock);
dev_set_drvdata(dev, ts);
@@ -178,7 +174,12 @@ int __devinit __max730x_probe(struct max7301 *ts)
/* Power up the chip and disable IRQ output */
ts->write(dev, 0x04, 0x01);
- ts->input_pullup_active = pdata->input_pullup_active;
+ if (pdata) {
+ ts->input_pullup_active = pdata->input_pullup_active;
+ ts->chip.base = pdata->base;
+ } else {
+ ts->chip.base = -1;
+ }
ts->chip.label = dev->driver->name;
ts->chip.direction_input = max7301_direction_input;
@@ -186,7 +187,6 @@ int __devinit __max730x_probe(struct max7301 *ts)
ts->chip.direction_output = max7301_direction_output;
ts->chip.set = max7301_set;
- ts->chip.base = pdata->base;
ts->chip.ngpio = PIN_NUMBER;
ts->chip.can_sleep = 1;
ts->chip.dev = dev;