4 * Derived from ivtv-gpio.c
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #include "cx18-driver.h"
25 #include "cx18-cards.h"
26 #include "cx18-gpio.h"
27 #include "tuner-xc2028.h"
29 /********************* GPIO stuffs *********************/
32 #define CX18_REG_GPIO_IN 0xc72010
33 #define CX18_REG_GPIO_OUT1 0xc78100
34 #define CX18_REG_GPIO_DIR1 0xc78108
35 #define CX18_REG_GPIO_OUT2 0xc78104
36 #define CX18_REG_GPIO_DIR2 0xc7810c
39 * HVR-1600 GPIO pins, courtesy of Hauppauge:
41 * gpio0: zilog ir process reset pin
42 * gpio1: zilog programming pin (you should never use this)
43 * gpio12: cx24227 reset pin
44 * gpio13: cs5345 reset pin
47 void cx18_gpio_init(struct cx18 *cx)
49 if (cx->card->gpio_init.direction == 0)
52 CX18_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
53 read_reg(CX18_REG_GPIO_DIR1), read_reg(CX18_REG_GPIO_OUT1));
55 /* init output data then direction */
56 write_reg(cx->card->gpio_init.direction << 16, CX18_REG_GPIO_DIR1);
57 write_reg(0, CX18_REG_GPIO_DIR2);
58 write_reg((cx->card->gpio_init.direction << 16) |
59 cx->card->gpio_init.initial_value, CX18_REG_GPIO_OUT1);
60 write_reg(0, CX18_REG_GPIO_OUT2);
63 /* Xceive tuner reset function */
64 int cx18_reset_tuner_gpio(void *dev, int cmd, int value)
66 struct i2c_algo_bit_data *algo = dev;
67 struct cx18 *cx = algo->data;
68 /* int curdir, curout;*/
70 if (cmd != XC2028_TUNER_RESET)
72 CX18_DEBUG_INFO("Resetting tuner\n");