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>
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 52fc089..3578c63 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -134,6 +134,7 @@
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 @@
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 @@
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 @@
/* 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 @@
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);