1 files changed, 74 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-gpio.c b/drivers/media/video/cx18/cx18-gpio.c
new file mode 100644
index 0000000..19253e6
--- /dev/null
+++ b/drivers/media/video/cx18/cx18-gpio.c
@@ -0,0 +1,74 @@
+/*
+ *  cx18 gpio functions
+ *
+ *  Derived from ivtv-gpio.c
+ *
+ *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA
+ */
+
+#include "cx18-driver.h"
+#include "cx18-cards.h"
+#include "cx18-gpio.h"
+#include "tuner-xc2028.h"
+
+/********************* GPIO stuffs *********************/
+
+/* GPIO registers */
+#define CX18_REG_GPIO_IN     0xc72010
+#define CX18_REG_GPIO_OUT1   0xc78100
+#define CX18_REG_GPIO_DIR1   0xc78108
+#define CX18_REG_GPIO_OUT2   0xc78104
+#define CX18_REG_GPIO_DIR2   0xc7810c
+
+/*
+ * HVR-1600 GPIO pins, courtesy of Hauppauge:
+ *
+ * gpio0: zilog ir process reset pin
+ * gpio1: zilog programming pin (you should never use this)
+ * gpio12: cx24227 reset pin
+ * gpio13: cs5345 reset pin
+*/
+
+void cx18_gpio_init(struct cx18 *cx)
+{
+	if (cx->card->gpio_init.direction == 0)
+		return;
+
+	CX18_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
+		   read_reg(CX18_REG_GPIO_DIR1), read_reg(CX18_REG_GPIO_OUT1));
+
+	/* init output data then direction */
+	write_reg(cx->card->gpio_init.direction << 16, CX18_REG_GPIO_DIR1);
+	write_reg(0, CX18_REG_GPIO_DIR2);
+	write_reg((cx->card->gpio_init.direction << 16) |
+			cx->card->gpio_init.initial_value, CX18_REG_GPIO_OUT1);
+	write_reg(0, CX18_REG_GPIO_OUT2);
+}
+
+/* Xceive tuner reset function */
+int cx18_reset_tuner_gpio(void *dev, int cmd, int value)
+{
+	struct i2c_algo_bit_data *algo = dev;
+	struct cx18 *cx = algo->data;
+/*	int curdir, curout;*/
+
+	if (cmd != XC2028_TUNER_RESET)
+		return 0;
+	CX18_DEBUG_INFO("Resetting tuner\n");
+	return 0;
+}