omap4 hsmmc: Register offset handling

In OMAP4, as per new PM programming model, the legacy registers
which were there in OMAP3 are all shifted by 0x100 while new one's
are added from offset 0 to 0x10.
For OMAP4, the register offset appending of 0x100 done in devices.c
currently, is moved to driver file.This change fits in for current
implementation as well as once the driver undergoes hwmod adaptation.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Madhusudhan Chikkature <madhu.cr@ti.com>
Cc: Adrian Hunter <adrian.hunter@nokia.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

4 files changed, 12 insertions, 5 deletions

diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 9e5d51bee94a..9bd4b3452453 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -817,13 +817,13 @@ void __init omap2_init_mmc(struct omap_mmc_platform_data **mmc_data,
                 case 3:
                         if (!cpu_is_omap44xx())
                                 return;
-                        base = OMAP4_MMC4_BASE + OMAP4_MMC_REG_OFFSET;
+                        base = OMAP4_MMC4_BASE;
                         irq = OMAP44XX_IRQ_MMC4;
                         break;
                 case 4:
                         if (!cpu_is_omap44xx())
                                 return;
-                        base = OMAP4_MMC5_BASE + OMAP4_MMC_REG_OFFSET;
+                        base = OMAP4_MMC5_BASE;
                         irq = OMAP44XX_IRQ_MMC5;
                         break;
                 default:
@@ -834,10 +834,8 @@ void __init omap2_init_mmc(struct omap_mmc_platform_data **mmc_data,
                         size = OMAP2420_MMC_SIZE;
                         name = "mmci-omap";
                 } else if (cpu_is_omap44xx()) {
-                        if (i < 3) {
-                                base += OMAP4_MMC_REG_OFFSET;
+                        if (i < 3)
                                 irq += OMAP44XX_IRQ_GIC_START;
-                        }
                         size = OMAP4_HSMMC_SIZE;
                         name = "mmci-omap-hs";
                 } else {
diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c
index df1311d93eba..ab78a5a8d9b0 100644
--- a/arch/arm/mach-omap2/hsmmc.c
+++ b/arch/arm/mach-omap2/hsmmc.c
@@ -266,6 +266,10 @@ void __init omap2_hsmmc_init(struct omap2_hsmmc_info *controllers)
                 mmc->slots[0].caps = c->caps;
                 mmc->slots[0].internal_clock = !c->ext_clock;
                 mmc->dma_mask = 0xffffffff;
+                if (cpu_is_omap44xx())
+                        mmc->reg_offset = OMAP4_MMC_REG_OFFSET;
+                else
+                        mmc->reg_offset = 0;
 
                 mmc->get_context_loss_count = hsmmc_get_context_loss;
 
diff --git a/arch/arm/plat-omap/include/plat/mmc.h b/arch/arm/plat-omap/include/plat/mmc.h
index 2c4629a8d9f2..0ce3099b1eb0 100644
--- a/arch/arm/plat-omap/include/plat/mmc.h
+++ b/arch/arm/plat-omap/include/plat/mmc.h
@@ -71,6 +71,9 @@ struct omap_mmc_platform_data {
 
         u64 dma_mask;
 
+        /* Register offset deviation */
+        u16 reg_offset;
+
         struct omap_mmc_slot_data {
 
                 /* 4/8 wires and any additional host capabilities
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 69858e750203..dc95756fd95c 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2014,6 +2014,8 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
         if (res == NULL || irq < 0)
                 return -ENXIO;
 
+        res->start += pdata->reg_offset;
+        res->end += pdata->reg_offset;
         res = request_mem_region(res->start, res->end - res->start + 1,
                                                         pdev->name);
         if (res == NULL)