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path: root/drivers/net/wireless/ti/wl18xx/io.c
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Diffstat (limited to 'drivers/net/wireless/ti/wl18xx/io.c')
-rw-r--r--drivers/net/wireless/ti/wl18xx/io.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/net/wireless/ti/wl18xx/io.c b/drivers/net/wireless/ti/wl18xx/io.c
new file mode 100644
index 000000000000..598c057e722b
--- /dev/null
+++ b/drivers/net/wireless/ti/wl18xx/io.c
@@ -0,0 +1,60 @@
+/*
+ * This file is part of wl18xx
+ *
+ * Copyright (C) 2011 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include "../wlcore/wlcore.h"
+#include "../wlcore/io.h"
+
+#include "io.h"
+
+void wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val)
+{
+ u32 tmp;
+
+ if (WARN_ON(addr % 2))
+ return;
+
+ if ((addr % 4) == 0) {
+ tmp = wl1271_read32(wl, addr);
+ tmp = (tmp & 0xffff0000) | val;
+ wl1271_write32(wl, addr, tmp);
+ } else {
+ tmp = wl1271_read32(wl, addr - 2);
+ tmp = (tmp & 0xffff) | (val << 16);
+ wl1271_write32(wl, addr - 2, tmp);
+ }
+}
+
+u16 wl18xx_top_reg_read(struct wl1271 *wl, int addr)
+{
+ u32 val;
+
+ if (WARN_ON(addr % 2))
+ return 0;
+
+ if ((addr % 4) == 0) {
+ /* address is 4-bytes aligned */
+ val = wl1271_read32(wl, addr);
+ return val & 0xffff;
+ } else {
+ val = wl1271_read32(wl, addr - 2);
+ return (val & 0xffff0000) >> 16;
+ }
+}