Linux 2.6.31 Release for Digi ConnectCore Wi-i.MX boards2.6.31-digi-201102101717

1 files changed, 9 insertions, 36 deletions

diff --git a/arch/arm/plat-mxc/iomux-v3.c b/arch/arm/plat-mxc/iomux-v3.c
index 77a078f9513f..b318c6a222d5 100644
--- a/arch/arm/plat-mxc/iomux-v3.c
+++ b/arch/arm/plat-mxc/iomux-v3.c
@@ -29,30 +29,22 @@
 #include <asm/mach/map.h>
 #include <mach/iomux-v3.h>
 
-#define IOMUX_BASE	IO_ADDRESS(IOMUXC_BASE_ADDR)
-
-static unsigned long iomux_v3_pad_alloc_map[0x200 / BITS_PER_LONG];
+static void __iomem *base;
 
 /*
- * setups a single pin:
- * 	- reserves the pin so that it is not claimed by another driver
- * 	- setups the iomux according to the configuration
+ * setups a single pad in the iomuxer
  */
 int mxc_iomux_v3_setup_pad(struct pad_desc *pad)
 {
-	unsigned int pad_ofs = pad->pad_ctrl_ofs;
-
-	if (test_and_set_bit(pad_ofs >> 2, iomux_v3_pad_alloc_map))
-		return -EBUSY;
 	if (pad->mux_ctrl_ofs)
-		__raw_writel(pad->mux_mode, IOMUX_BASE + pad->mux_ctrl_ofs);
+		__raw_writel(pad->mux_mode, base + pad->mux_ctrl_ofs);
 
 	if (pad->select_input_ofs)
 		__raw_writel(pad->select_input,
-				IOMUX_BASE + pad->select_input_ofs);
+				base + pad->select_input_ofs);
 
-	if (!(pad->pad_ctrl & NO_PAD_CTRL))
-		__raw_writel(pad->pad_ctrl, IOMUX_BASE + pad->pad_ctrl_ofs);
+	if (!(pad->pad_ctrl & NO_PAD_CTRL) && pad->pad_ctrl_ofs)
+		__raw_writel(pad->pad_ctrl, base + pad->pad_ctrl_ofs);
 	return 0;
 }
 EXPORT_SYMBOL(mxc_iomux_v3_setup_pad);
@@ -66,33 +58,14 @@ int mxc_iomux_v3_setup_multiple_pads(struct pad_desc *pad_list, unsigned count)
 	for (i = 0; i < count; i++) {
 		ret = mxc_iomux_v3_setup_pad(p);
 		if (ret)
-			goto setup_error;
+			return ret;
 		p++;
 	}
 	return 0;
-
-setup_error:
-	mxc_iomux_v3_release_multiple_pads(pad_list, i);
-	return ret;
 }
 EXPORT_SYMBOL(mxc_iomux_v3_setup_multiple_pads);
 
-void mxc_iomux_v3_release_pad(struct pad_desc *pad)
-{
-	unsigned int pad_ofs = pad->pad_ctrl_ofs;
-
-	clear_bit(pad_ofs >> 2, iomux_v3_pad_alloc_map);
-}
-EXPORT_SYMBOL(mxc_iomux_v3_release_pad);
-
-void mxc_iomux_v3_release_multiple_pads(struct pad_desc *pad_list, int count)
+void mxc_iomux_v3_init(void __iomem *iomux_v3_base)
 {
-	struct pad_desc *p = pad_list;
-	int i;
-
-	for (i = 0; i < count; i++) {
-		mxc_iomux_v3_release_pad(p);
-		p++;
-	}
+	base = iomux_v3_base;
 }
-EXPORT_SYMBOL(mxc_iomux_v3_release_multiple_pads);