mtd: onenand: omap2: obtain memory from resource

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>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 16 insertions, 13 deletions

diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 398a82783848..3ff893d4e6ce 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);