Added missing tegra files.HEADmaster

1 files changed, 61 insertions, 0 deletions

diff --git a/arch/mips/bcm47xx/gpio.c b/arch/mips/bcm47xx/gpio.c
new file mode 100644
index 00000000000..e4a5ee9c972
--- /dev/null
+++ b/arch/mips/bcm47xx/gpio.c
@@ -0,0 +1,61 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
+ */
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_driver_chipcommon.h>
+#include <linux/ssb/ssb_driver_extif.h>
+#include <asm/mach-bcm47xx/bcm47xx.h>
+#include <asm/mach-bcm47xx/gpio.h>
+
+#if (BCM47XX_CHIPCO_GPIO_LINES > BCM47XX_EXTIF_GPIO_LINES)
+static DECLARE_BITMAP(gpio_in_use, BCM47XX_CHIPCO_GPIO_LINES);
+#else
+static DECLARE_BITMAP(gpio_in_use, BCM47XX_EXTIF_GPIO_LINES);
+#endif
+
+int gpio_request(unsigned gpio, const char *tag)
+{
+        if (ssb_chipco_available(&ssb_bcm47xx.chipco) &&
+            ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
+                return -EINVAL;
+
+        if (ssb_extif_available(&ssb_bcm47xx.extif) &&
+            ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
+                return -EINVAL;
+
+        if (test_and_set_bit(gpio, gpio_in_use))
+                return -EBUSY;
+
+        return 0;
+}
+EXPORT_SYMBOL(gpio_request);
+
+void gpio_free(unsigned gpio)
+{
+        if (ssb_chipco_available(&ssb_bcm47xx.chipco) &&
+            ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
+                return;
+
+        if (ssb_extif_available(&ssb_bcm47xx.extif) &&
+            ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
+                return;
+
+        clear_bit(gpio, gpio_in_use);
+}
+EXPORT_SYMBOL(gpio_free);
+
+int gpio_to_irq(unsigned gpio)
+{
+        if (ssb_chipco_available(&ssb_bcm47xx.chipco))
+                return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2;
+        else if (ssb_extif_available(&ssb_bcm47xx.extif))
+                return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2;
+        else
+                return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(gpio_to_irq);