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staging: nvec: move device tree parsing to its own function 

This moves device tree parsing to its own function so more stuff can
be cleanly added in the future.

Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marc Dietrich 2013-06-21 10:28:55 +02:00 committed by Greg Kroah-Hartman
parent 2c6cbdd0ef
commit 95cd1860b8
1 changed files with 24 additions and 11 deletions
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35
drivers/staging/nvec/nvec.c
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@ -771,6 +771,27 @@ static void nvec_power_off(void)
nvec_write_async(nvec_power_handle, ap_pwr_down, 2);
}
/*
* Parse common device tree data
*/
static int nvec_i2c_parse_dt_pdata(struct nvec_chip *nvec)
{
nvec->gpio = of_get_named_gpio(nvec->dev->of_node, "request-gpios", 0);
if (nvec->gpio < 0) {
dev_err(nvec->dev, "no gpio specified");
return -ENODEV;
}
if (of_property_read_u32(nvec->dev->of_node, "slave-addr",
&nvec->i2c_addr)) {
dev_err(nvec->dev, "no i2c address specified");
return -ENODEV;
}
return 0;
}
static int tegra_nvec_probe(struct platform_device *pdev)
{
int err, ret;
@ -796,17 +817,9 @@ static int tegra_nvec_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, nvec);
nvec->dev = &pdev->dev;
nvec->gpio = of_get_named_gpio(nvec->dev->of_node, "request-gpios", 0);
if (nvec->gpio < 0) {
dev_err(&pdev->dev, "no gpio specified");
return -ENODEV;
}
if (of_property_read_u32(nvec->dev->of_node, "slave-addr",
&nvec->i2c_addr)) {
dev_err(&pdev->dev, "no i2c address specified");
return -ENODEV;
}
err = nvec_i2c_parse_dt_pdata(nvec);
if (err < 0)
return err;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);