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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>
This commit is contained in:
Afzal Mohammed 2012-08-30 12:53:23 -07:00 committed by Tony Lindgren
parent 681988ba0c
commit 9c4c2f8b91
2 changed files with 15 additions and 5 deletions
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1
arch/arm/plat-omap/include/plat/nand.h
View File

@ -26,7 +26,6 @@ struct omap_nand_platform_data {
bool dev_ready;
int gpmc_irq;
enum nand_io xfer_type;
unsigned long phys_base;
int devsize;
enum omap_ecc ecc_opt;
struct gpmc_nand_regs reg;

19
drivers/mtd/nand/omap2.c
View File

@ -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);