ARM: OMAP2+: gpmc-onenand: provide memory as resource

Currently omap onenand driver invokes gpmc_cs_request, obtains address
space allocated by gpmc to onenand. Remove this, instead use resource
structure; this is now updated with address space for onenand by gpmc
initialization with the help of gpmc_cs_request. And remove usage of
gpmc_cs_request in onenand driver.

This helps in smooth migration of gpmc to driver.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c
index a0fa9bb..71d7c07 100644 (file)
--- a/arch/arm/mach-omap2/gpmc-onenand.c
+++ b/arch/arm/mach-omap2/gpmc-onenand.c
@@ -23,11 +23,19 @@
 #include <plat/board.h>
 #include <plat/gpmc.h>
 
+#define        ONENAND_IO_SIZE SZ_128K
+
 static struct omap_onenand_platform_data *gpmc_onenand_data;
 
+static struct resource gpmc_onenand_resource = {
+       .flags          = IORESOURCE_MEM,
+};
+
 static struct platform_device gpmc_onenand_device = {
        .name           = "omap2-onenand",
        .id             = -1,
+       .num_resources  = 1,
+       .resource       = &gpmc_onenand_resource,
 };
 
 static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base)
@@ -390,6 +398,8 @@ static int gpmc_onenand_setup(void __iomem *onenand_base, int *freq_ptr)
 
 void __init gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data)
 {
+       int err;
+
        gpmc_onenand_data = _onenand_data;
        gpmc_onenand_data->onenand_setup = gpmc_onenand_setup;
        gpmc_onenand_device.dev.platform_data = gpmc_onenand_data;
@@ -401,8 +411,19 @@ void __init gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data)
                gpmc_onenand_data->flags |= ONENAND_SYNC_READ;
        }
 
+       err = gpmc_cs_request(gpmc_onenand_data->cs, ONENAND_IO_SIZE,
+                               (unsigned long *)&gpmc_onenand_resource.start);
+       if (err < 0) {
+               pr_err("%s: Cannot request GPMC CS\n", __func__);
+               return;
+       }
+
+       gpmc_onenand_resource.end = gpmc_onenand_resource.start +
+                                                       ONENAND_IO_SIZE - 1;
+
        if (platform_device_register(&gpmc_onenand_device) < 0) {
-               printk(KERN_ERR "Unable to register OneNAND device\n");
+               pr_err("%s: Unable to register OneNAND device\n", __func__);
+               gpmc_cs_free(gpmc_onenand_data->cs);
                return;
        }
 }