[PATCH v2 07/10] mtd: onenand: omap2: obtain memory from resource

Afzal Mohammed
2012-06-13T11:49:17Z

gpmc initialization for onenand done by platform code now provides
onenand address space as memory resource. Hence remove usage of
gpmc_cs_request in onenand driver and obtain memory details from
resource structure.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
---
drivers/mtd/onenand/omap2.c | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 398a827..3ff893d 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -48,13 +48,13 @@

#define DRIVER_NAME "omap2-onenand"

-#define ONENAND_IO_SIZE SZ_128K
#define ONENAND_BUFRAM_SIZE (1024 * 5)

struct omap2_onenand {
struct platform_device *pdev;
int gpmc_cs;
unsigned long phys_base;
+ unsigned int mem_size;
int gpio_irq;
struct mtd_info mtd;
struct onenand_chip onenand;
@@ -626,6 +626,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
struct omap2_onenand *c;
struct onenand_chip *this;
int r;
+ struct resource *res;

pdata = pdev->dev.platform_data;
if (pdata == NULL) {
@@ -647,20 +648,24 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
c->gpio_irq = 0;
}

- r = gpmc_cs_request(c->gpmc_cs, ONENAND_IO_SIZE, &c->phys_base);
- if (r < 0) {
- dev_err(&pdev->dev, "Cannot request GPMC CS\n");
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ r = -EINVAL;
+ dev_err(&pdev->dev, "error getting memory resource\n");
goto err_kfree;
}

- if (request_mem_region(c->phys_base, ONENAND_IO_SIZE,
+ c->phys_base = res->start;
+ c->mem_size = resource_size(res);
+
+ if (request_mem_region(c->phys_base, c->mem_size,
pdev->dev.driver->name) == NULL) {
- dev_err(&pdev->dev, "Cannot reserve memory region at 0x%08lx, "
- "size: 0x%x\n", c->phys_base, ONENAND_IO_SIZE);
+ dev_err(&pdev->dev, "Cannot reserve memory region at 0x%08lx, size: 0x%x\n",
+ c->phys_base, c->mem_size);
r = -EBUSY;
- goto err_free_cs;
+ goto err_kfree;
}
- c->onenand.base = ioremap(c->phys_base, ONENAND_IO_SIZE);
+ c->onenand.base = ioremap(c->phys_base, c->mem_size);
if (c->onenand.base == NULL) {
r = -ENOMEM;
goto err_release_mem_region;
@@ -776,9 +781,7 @@ err_release_gpio:
err_iounmap:
iounmap(c->onenand.base);
err_release_mem_region:
- release_mem_region(c->phys_base, ONENAND_IO_SIZE);
-err_free_cs:
- gpmc_cs_free(c->gpmc_cs);
+ release_mem_region(c->phys_base, c->mem_size);
err_kfree:
kfree(c);

@@ -800,7 +803,7 @@ static int __devexit omap2_onenand_remove(struct platform_device *pdev)
gpio_free(c->gpio_irq);
}
iounmap(c->onenand.base);
- release_mem_region(c->phys_base, ONENAND_IO_SIZE);
+ release_mem_region(c->phys_base, c->mem_size);
gpmc_cs_free(c->gpmc_cs);
kfree(c);

--
1.7.10.2