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path: root/drivers/media/video/cx18/cx18-gpio.c
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Diffstat (limited to 'drivers/media/video/cx18/cx18-gpio.c')
-rw-r--r--drivers/media/video/cx18/cx18-gpio.c218
1 files changed, 0 insertions, 218 deletions
diff --git a/drivers/media/video/cx18/cx18-gpio.c b/drivers/media/video/cx18/cx18-gpio.c
deleted file mode 100644
index 1a99329f33c..00000000000
--- a/drivers/media/video/cx18/cx18-gpio.c
+++ /dev/null
@@ -1,218 +0,0 @@
-/*
- * cx18 gpio functions
- *
- * Derived from ivtv-gpio.c
- *
- * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
- * Copyright (C) 2008 Andy Walls <awalls@radix.net>
- *
- * 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-io.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_lo = cx->gpio_dir & 0xffff;
- u32 val_lo = cx->gpio_val & 0xffff;
- u32 dir_hi = cx->gpio_dir >> 16;
- u32 val_hi = cx->gpio_val >> 16;
-
- cx18_write_reg_expect(cx, dir_lo << 16,
- CX18_REG_GPIO_DIR1, ~dir_lo, dir_lo);
- cx18_write_reg_expect(cx, (dir_lo << 16) | val_lo,
- CX18_REG_GPIO_OUT1, val_lo, dir_lo);
- cx18_write_reg_expect(cx, dir_hi << 16,
- CX18_REG_GPIO_DIR2, ~dir_hi, dir_hi);
- cx18_write_reg_expect(cx, (dir_hi << 16) | val_hi,
- CX18_REG_GPIO_OUT2, val_hi, dir_hi);
-}
-
-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 */
- mutex_lock(&cx->gpio_lock);
- 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));
- mutex_unlock(&cx->gpio_lock);
-}
-
-void cx18_reset_ir_gpio(void *data)
-{
- struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
- const struct cx18_gpio_i2c_slave_reset *p;
-
- p = &cx->card->gpio_i2c_slave_reset;
-
- if (p->ir_reset_mask == 0)
- return;
-
- CX18_DEBUG_INFO("Resetting IR microcontroller\n");
-
- /*
- Assert timing for the Z8F0811 on HVR-1600 boards:
- 1. Assert RESET for min of 4 clock cycles at 18.432 MHz to initiate
- 2. Reset then takes 66 WDT cycles at 10 kHz + 16 xtal clock cycles
- (6,601,085 nanoseconds ~= 7 milliseconds)
- 3. DBG pin must be high before chip exits reset for normal operation.
- DBG is open drain and hopefully pulled high since we don't
- normally drive it (GPIO 1?) for the HVR-1600
- 4. Z8F0811 won't exit reset until RESET is deasserted
- */
- mutex_lock(&cx->gpio_lock);
- cx->gpio_val = cx->gpio_val & ~p->ir_reset_mask;
- gpio_write(cx);
- mutex_unlock(&cx->gpio_lock);
- schedule_timeout_uninterruptible(msecs_to_jiffies(p->msecs_asserted));
-
- /*
- Zilog comes out of reset, loads reset vector address and executes
- from there. Required recovery delay unknown.
- */
- mutex_lock(&cx->gpio_lock);
- cx->gpio_val = cx->gpio_val | p->ir_reset_mask;
- gpio_write(cx);
- mutex_unlock(&cx->gpio_lock);
- schedule_timeout_uninterruptible(msecs_to_jiffies(p->msecs_recovery));
-}
-EXPORT_SYMBOL(cx18_reset_ir_gpio);
-/* This symbol is exported for use by an infrared module for the IR-blaster */
-
-void cx18_gpio_init(struct cx18 *cx)
-{
- mutex_lock(&cx->gpio_lock);
- 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) {
- mutex_unlock(&cx->gpio_lock);
- return;
- }
-
- CX18_DEBUG_INFO("GPIO initial dir: %08x/%08x out: %08x/%08x\n",
- cx18_read_reg(cx, CX18_REG_GPIO_DIR1),
- cx18_read_reg(cx, CX18_REG_GPIO_DIR2),
- cx18_read_reg(cx, CX18_REG_GPIO_OUT1),
- cx18_read_reg(cx, CX18_REG_GPIO_OUT2));
-
- gpio_write(cx);
- mutex_unlock(&cx->gpio_lock);
-}
-
-/* Xceive tuner reset function */
-int cx18_reset_tuner_gpio(void *dev, int component, 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");
-
- mutex_lock(&cx->gpio_lock);
- cx->gpio_val &= ~(1 << cx->card->xceive_pin);
- gpio_write(cx);
- mutex_unlock(&cx->gpio_lock);
- schedule_timeout_interruptible(msecs_to_jiffies(1));
-
- mutex_lock(&cx->gpio_lock);
- cx->gpio_val |= 1 << cx->card->xceive_pin;
- gpio_write(cx);
- mutex_unlock(&cx->gpio_lock);
- schedule_timeout_interruptible(msecs_to_jiffies(1));
- return 0;
-}
-
-int cx18_gpio(struct cx18 *cx, unsigned int command, void *arg)
-{
- struct v4l2_routing *route = arg;
- u32 mask, data;
-
- switch (command) {
- case VIDIOC_INT_S_AUDIO_ROUTING:
- if (route->input > 2)
- return -EINVAL;
- mask = cx->card->gpio_audio_input.mask;
- switch (route->input) {
- case 0:
- data = cx->card->gpio_audio_input.tuner;
- break;
- case 1:
- data = cx->card->gpio_audio_input.linein;
- break;
- case 2:
- default:
- data = cx->card->gpio_audio_input.radio;
- break;
- }
- break;
-
- default:
- return -EINVAL;
- }
- if (mask) {
- mutex_lock(&cx->gpio_lock);
- cx->gpio_val = (cx->gpio_val & ~mask) | (data & mask);
- gpio_write(cx);
- mutex_unlock(&cx->gpio_lock);
- }
- return 0;
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 16:29:02 +0000