1 files changed, 121 insertions, 0 deletions

diff --git a/drivers/media/video/bt8xx/bttv-if.c b/drivers/media/video/bt8xx/bttv-if.c
new file mode 100644
index 00000000000..a6a540dc9e4
--- /dev/null
+++ b/drivers/media/video/bt8xx/bttv-if.c
@@ -0,0 +1,121 @@
+/*
+
+    bttv-if.c  --  old gpio interface to other kernel modules
+                   don't use in new code, will go away in 2.7
+                   have a look at bttv-gpio.c instead.
+
+    bttv - Bt848 frame grabber driver
+
+    Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
+                           & Marcus Metzler (mocm@thp.uni-koeln.de)
+    (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+#include "bttvp.h"
+
+EXPORT_SYMBOL(bttv_get_pcidev);
+EXPORT_SYMBOL(bttv_gpio_enable);
+EXPORT_SYMBOL(bttv_read_gpio);
+EXPORT_SYMBOL(bttv_write_gpio);
+
+/* ----------------------------------------------------------------------- */
+/* Exported functions - for other modules which want to access the         */
+/*                      gpio ports (IR for example)                        */
+/*                      see bttv.h for comments                            */
+
+struct pci_dev* bttv_get_pcidev(unsigned int card)
+{
+        if (card >= bttv_num)
+                return NULL;
+        if (!bttvs[card])
+                return NULL;
+
+        return bttvs[card]->c.pci;
+}
+
+
+int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)
+{
+        struct bttv *btv;
+
+        if (card >= bttv_num) {
+                return -EINVAL;
+        }
+
+        btv = bttvs[card];
+        if (!btv)
+                return -ENODEV;
+
+        gpio_inout(mask,data);
+        if (bttv_gpio)
+                bttv_gpio_tracking(btv,"extern enable");
+        return 0;
+}
+
+int bttv_read_gpio(unsigned int card, unsigned long *data)
+{
+        struct bttv *btv;
+
+        if (card >= bttv_num) {
+                return -EINVAL;
+        }
+
+        btv = bttvs[card];
+        if (!btv)
+                return -ENODEV;
+
+        if(btv->shutdown) {
+                return -ENODEV;
+        }
+
+/* prior setting BT848_GPIO_REG_INP is (probably) not needed
+   because we set direct input on init */
+        *data = gpio_read();
+        return 0;
+}
+
+int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)
+{
+        struct bttv *btv;
+
+        if (card >= bttv_num) {
+                return -EINVAL;
+        }
+
+        btv = bttvs[card];
+        if (!btv)
+                return -ENODEV;
+
+/* prior setting BT848_GPIO_REG_INP is (probably) not needed
+   because direct input is set on init */
+        gpio_bits(mask,data);
+        if (bttv_gpio)
+                bttv_gpio_tracking(btv,"extern write");
+        return 0;
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */