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mtd: plat_nand: add platform probe/remove callbacks

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Add optional probe and remove callbacks to the plat_nand driver.

Some platforms may require additional setup, such as configuring the
memory controller, before the nand device can be accessed.  This patch
provides an optional callback to handle this setup as well as a callback
to teardown the setup.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
H Hartley Sweeten
2009-05-12 13:46:58 -07:00
committed by David Woodhouse
parent 4d964824ec
commit bf95efd41b
2 changed files with 18 additions and 2 deletions
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13
drivers/mtd/nand/plat_nand.c
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@@ -72,6 +72,13 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
/* Handle any platform specific setup */
if (pdata->ctrl.probe) {
res = pdata->ctrl.probe(pdev);
if (res)
goto out;
}
/* Scan to find existance of the device */
if (nand_scan(&data->mtd, 1)) {
res = -ENXIO;
@@ -101,6 +108,8 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
nand_release(&data->mtd);
out:
if (pdata->ctrl.remove)
pdata->ctrl.remove(pdev);
platform_set_drvdata(pdev, NULL);
iounmap(data->io_base);
kfree(data);
@@ -113,15 +122,15 @@ out:
static int __devexit plat_nand_remove(struct platform_device *pdev)
{
struct plat_nand_data *data = platform_get_drvdata(pdev);
#ifdef CONFIG_MTD_PARTITIONS
struct platform_nand_data *pdata = pdev->dev.platform_data;
#endif
nand_release(&data->mtd);
#ifdef CONFIG_MTD_PARTITIONS
if (data->parts && data->parts != pdata->chip.partitions)
kfree(data->parts);
#endif
if (pdata->ctrl.remove)
pdata->ctrl.remove(pdev);
iounmap(data->io_base);
kfree(data);