diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-gpio.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-gpio.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/drivers/media/video/cx18/cx18-gpio.c b/drivers/media/video/cx18/cx18-gpio.c deleted file mode 100644 index b302833f6f9..00000000000 --- a/drivers/media/video/cx18/cx18-gpio.c +++ /dev/null @@ -1,124 +0,0 @@ -/* - * 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 -*/ - -static void gpio_write(struct cx18 *cx) -{ - u32 dir = cx->gpio_dir; - u32 val = cx->gpio_val; - - write_reg((dir & 0xffff) << 16, CX18_REG_GPIO_DIR1); - write_reg(((dir & 0xffff) << 16) | (val & 0xffff), - CX18_REG_GPIO_OUT1); - write_reg(dir & 0xffff0000, CX18_REG_GPIO_DIR2); - write_reg_sync((dir & 0xffff0000) | ((val & 0xffff0000) >> 16), - CX18_REG_GPIO_OUT2); -} - -void cx18_reset_i2c_slaves_gpio(struct cx18 *cx) -{ - const struct cx18_gpio_i2c_slave_reset *p; - - p = &cx->card->gpio_i2c_slave_reset; - - if ((p->active_lo_mask | p->active_hi_mask) == 0) - return; - - /* Assuming that the masks are a subset of the bits in gpio_dir */ - - /* Assert */ - cx->gpio_val = - (cx->gpio_val | p->active_hi_mask) & ~(p->active_lo_mask); - gpio_write(cx); - schedule_timeout_uninterruptible(msecs_to_jiffies(p->msecs_asserted)); - - /* Deassert */ - cx->gpio_val = - (cx->gpio_val | p->active_lo_mask) & ~(p->active_hi_mask); - gpio_write(cx); - schedule_timeout_uninterruptible(msecs_to_jiffies(p->msecs_recovery)); -} - -void cx18_gpio_init(struct cx18 *cx) -{ - cx->gpio_dir = cx->card->gpio_init.direction; - cx->gpio_val = cx->card->gpio_init.initial_value; - - if (cx->card->tuners[0].tuner == TUNER_XC2028) { - cx->gpio_dir |= 1 << cx->card->xceive_pin; - cx->gpio_val |= 1 << cx->card->xceive_pin; - } - - if (cx->gpio_dir == 0) - return; - - CX18_DEBUG_INFO("GPIO initial dir: %08x/%08x out: %08x/%08x\n", - read_reg(CX18_REG_GPIO_DIR1), read_reg(CX18_REG_GPIO_DIR2), - read_reg(CX18_REG_GPIO_OUT1), read_reg(CX18_REG_GPIO_OUT2)); - - gpio_write(cx); -} - -/* Xceive tuner reset function */ -int cx18_reset_tuner_gpio(void *dev, int cmd, int value) -{ - struct i2c_algo_bit_data *algo = dev; - struct cx18_i2c_algo_callback_data *cb_data = algo->data; - struct cx18 *cx = cb_data->cx; - - if (cmd != XC2028_TUNER_RESET) - return 0; - CX18_DEBUG_INFO("Resetting tuner\n"); - - cx->gpio_val &= ~(1 << cx->card->xceive_pin); - - gpio_write(cx); - schedule_timeout_interruptible(msecs_to_jiffies(1)); - - cx->gpio_val |= 1 << cx->card->xceive_pin; - gpio_write(cx); - schedule_timeout_interruptible(msecs_to_jiffies(1)); - return 0; -} |