mxc: iomux v3: remove resource handling
The current model does not allow to put a pad into different modes
once a pins is allocated. Remove the resource handling.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/plat-mxc/iomux-v3.c b/arch/arm/plat-mxc/iomux-v3.c
index 851ca99..b318c6a 100644
--- a/arch/arm/plat-mxc/iomux-v3.c
+++ b/arch/arm/plat-mxc/iomux-v3.c
@@ -31,19 +31,11 @@
static void __iomem *base;
-static unsigned long iomux_v3_pad_alloc_map[0x200 / BITS_PER_LONG];
-
/*
- * 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, base + pad->mux_ctrl_ofs);
@@ -66,37 +58,13 @@
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)
-{
- struct pad_desc *p = pad_list;
- int i;
-
- for (i = 0; i < count; i++) {
- mxc_iomux_v3_release_pad(p);
- p++;
- }
-}
-EXPORT_SYMBOL(mxc_iomux_v3_release_multiple_pads);
-
void mxc_iomux_v3_init(void __iomem *iomux_v3_base)
{
base = iomux_v3_base;