Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / wireless / ti / wl18xx / io.c

diff --git a/kernel/drivers/net/wireless/ti/wl18xx/io.c b/kernel/drivers/net/wireless/ti/wl18xx/io.c
new file mode 100644 (file)
index 0000000..f0abf3e
--- /dev/null
+++ b/kernel/drivers/net/wireless/ti/wl18xx/io.c
@@ -0,0 +1,75 @@
+/*
+ * 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"
+
+int wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val)
+{
+       u32 tmp;
+       int ret;
+
+       if (WARN_ON(addr % 2))
+               return -EINVAL;
+
+       if ((addr % 4) == 0) {
+               ret = wlcore_read32(wl, addr, &tmp);
+               if (ret < 0)
+                       goto out;
+
+               tmp = (tmp & 0xffff0000) | val;
+               ret = wlcore_write32(wl, addr, tmp);
+       } else {
+               ret = wlcore_read32(wl, addr - 2, &tmp);
+               if (ret < 0)
+                       goto out;
+
+               tmp = (tmp & 0xffff) | (val << 16);
+               ret = wlcore_write32(wl, addr - 2, tmp);
+       }
+
+out:
+       return ret;
+}
+
+int wl18xx_top_reg_read(struct wl1271 *wl, int addr, u16 *out)
+{
+       u32 val = 0;
+       int ret;
+
+       if (WARN_ON(addr % 2))
+               return -EINVAL;
+
+       if ((addr % 4) == 0) {
+               /* address is 4-bytes aligned */
+               ret = wlcore_read32(wl, addr, &val);
+               if (ret >= 0 && out)
+                       *out = val & 0xffff;
+       } else {
+               ret = wlcore_read32(wl, addr - 2, &val);
+               if (ret >= 0 && out)
+                       *out = (val & 0xffff0000) >> 16;
+       }
+
+       return ret;
+}