davinci: cpuidle: move mapping of DDR2 controller registers out of driver

When suspend is supported, both cpuidle and suspend code
need to work on DDR2 registers. Instead of mapping the
DDR2 registers twice, do it once outside of cpuidle
driver and let cpuidle driver get the virtual base address
of DDR2 registers.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 4 insertions, 29 deletions

diff --git a/arch/arm/mach-davinci/cpuidle.c b/arch/arm/mach-davinci/cpuidle.c
index beda3b579688..bd59f31b8a95 100644
--- a/arch/arm/mach-davinci/cpuidle.c
+++ b/arch/arm/mach-davinci/cpuidle.c
@@ -106,8 +106,6 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
 	int ret;
 	struct cpuidle_device *device;
 	struct davinci_cpuidle_config *pdata = pdev->dev.platform_data;
-	struct resource *ddr2_regs;
-	resource_size_t len;
 
 	device = &per_cpu(davinci_cpuidle_device, smp_processor_id());
 
@@ -116,28 +114,12 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
 		return -ENOENT;
 	}
 
-	ddr2_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!ddr2_regs) {
-		dev_err(&pdev->dev, "cannot get DDR2 controller register base");
-		return -ENODEV;
-	}
-
-	len = resource_size(ddr2_regs);
-
-	ddr2_regs = request_mem_region(ddr2_regs->start, len, ddr2_regs->name);
-	if (!ddr2_regs)
-		return -EBUSY;
-
-	ddr2_reg_base = ioremap(ddr2_regs->start, len);
-	if (!ddr2_reg_base) {
-		ret = -ENOMEM;
-		goto ioremap_fail;
-	}
+	ddr2_reg_base = pdata->ddr2_ctlr_base;
 
 	ret = cpuidle_register_driver(&davinci_idle_driver);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register driver\n");
-		goto driver_register_fail;
+		return ret;
 	}
 
 	/* Wait for interrupt state */
@@ -164,18 +146,11 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
 	ret = cpuidle_register_device(device);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register device\n");
-		goto device_register_fail;
+		cpuidle_unregister_driver(&davinci_idle_driver);
+		return ret;
 	}
 
 	return 0;
-
-device_register_fail:
-	cpuidle_unregister_driver(&davinci_idle_driver);
-driver_register_fail:
-	iounmap(ddr2_reg_base);
-ioremap_fail:
-	release_mem_region(ddr2_regs->start, len);
-	return ret;
 }
 
 static struct platform_driver davinci_cpuidle_driver = {