On 11/11/2013 05:37 PM, Prabhakar Lad wrote:
Hi Grygorii,
Thanks for the review.
On Mon, Nov 11, 2013 at 8:48 PM, Grygorii Strashko
<grygorii.strashko@xxxxxx> wrote:
On 11/08/2013 12:11 PM, Prabhakar Lad wrote:
[Snip]
@@ -134,6 +137,40 @@ davinci_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
writel((1 << offset), value ? &g->set_data : &g->clr_data);
}
+static struct davinci_gpio_platform_data *
+davinci_gpio_get_pdata(struct platform_device *pdev)
Minor: usually such functions have "_of" in their names:
davinci_gpio_of_get_pdata()
Ahh but actual this function is intended to get pdata in both the
cases DT and NON-DT, so kept it generic :)
np
+{
+ struct device_node *dn = pdev->dev.of_node;
+ struct davinci_gpio_platform_data *pdata;
+ int ret;
+ u32 val;
+
+ if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+ return pdev->dev.platform_data;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ ret = of_property_read_u32(dn, "ti,ngpio", &val);
+ if (ret)
+ goto of_err;
+
+ pdata->ngpio = val;
+
+ ret = of_property_read_u32(dn, "ti,davinci-gpio-unbanked", &val);
+ if (ret)
+ goto of_err;
+
+ pdata->gpio_unbanked = val;
+
+ return pdata;
+
+of_err:
+ dev_err(&pdev->dev, "Populating pdata from DT failed: err %d\n", ret);
+ return NULL;
+}
+
static int davinci_gpio_probe(struct platform_device *pdev)
{
int i, base;
@@ -144,12 +181,14 @@ static int davinci_gpio_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct resource *res;
- pdata = dev->platform_data;
+ pdata = davinci_gpio_get_pdata(pdev);
if (!pdata) {
dev_err(dev, "No platform data found\n");
return -EINVAL;
}
+ dev->platform_data = pdata;
+
Pls, add following code to GPIO chip initialization:
@@ -233,6 +245,9 @@ static int davinci_gpio_probe(struct platform_device *pdev)
chips[i].chip.ngpio = ngpio - base;
if (chips[i].chip.ngpio > 32)
chips[i].chip.ngpio = 32;
+#ifdef CONFIG_OF_GPIO
+ chips[i].chip.of_node = dev->of_node;
+#endif
OK
Regards,
--Prabhakar Lad
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