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authorAfzal Mohammed <afzal@ti.com>2012-08-30 21:53:23 +0200
committerTony Lindgren <tony@atomide.com>2012-08-30 21:53:23 +0200
commit9c4c2f8b91a8bcc431d1c033e4d4455479b8183b (patch)
treeba37152e231c1bb3c3c33a50b304181a8c68ea5a /drivers
parentARM: OMAP2+: gpmc-onenand: provide memory as resource (diff)
downloadlinux-9c4c2f8b91a8bcc431d1c033e4d4455479b8183b.tar.xz
linux-9c4c2f8b91a8bcc431d1c033e4d4455479b8183b.zip
mtd: nand: omap2: obtain memory from resource
gpmc initialization done by platform code now updates struct resource with the address space alloted for nand. Use this interface to obtain memory rather than relying on platform data field - phys_base. Signed-off-by: Afzal Mohammed <afzal@ti.com> Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/nand/omap2.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 52fc089d5bcb..3578c633e97e 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -134,6 +134,7 @@ struct omap_nand_info {
int gpmc_cs;
unsigned long phys_base;
+ unsigned long mem_size;
struct completion comp;
struct dma_chan *dma;
int gpmc_irq;
@@ -1270,6 +1271,7 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
int i, offset;
dma_cap_mask_t mask;
unsigned sig;
+ struct resource *res;
pdata = pdev->dev.platform_data;
if (pdata == NULL) {
@@ -1289,7 +1291,6 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
info->pdev = pdev;
info->gpmc_cs = pdata->cs;
- info->phys_base = pdata->phys_base;
info->reg = pdata->reg;
info->mtd.priv = &info->nand;
@@ -1302,13 +1303,23 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
/* NAND write protect off */
gpmc_cs_configure(info->gpmc_cs, GPMC_CONFIG_WP, 0);
- if (!request_mem_region(info->phys_base, NAND_IO_SIZE,
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ err = -EINVAL;
+ dev_err(&pdev->dev, "error getting memory resource\n");
+ goto out_free_info;
+ }
+
+ info->phys_base = res->start;
+ info->mem_size = resource_size(res);
+
+ if (!request_mem_region(info->phys_base, info->mem_size,
pdev->dev.driver->name)) {
err = -EBUSY;
goto out_free_info;
}
- info->nand.IO_ADDR_R = ioremap(info->phys_base, NAND_IO_SIZE);
+ info->nand.IO_ADDR_R = ioremap(info->phys_base, info->mem_size);
if (!info->nand.IO_ADDR_R) {
err = -ENOMEM;
goto out_release_mem_region;
@@ -1479,7 +1490,7 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
out_release_mem_region:
if (info->dma)
dma_release_channel(info->dma);
- release_mem_region(info->phys_base, NAND_IO_SIZE);
+ release_mem_region(info->phys_base, info->mem_size);
out_free_info:
kfree(info);