- 根目录:
- drivers
- staging
- go7007
- saa7134-go7007.c
/*
* Copyright (C) 2005-2006 Micronas USA Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* 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 <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <asm/byteorder.h>
#include <media/v4l2-common.h>
#include "saa7134-reg.h"
#include "saa7134.h"
#include "go7007-priv.h"
#define GO7007_HPI_DEBUG
enum hpi_address {
HPI_ADDR_VIDEO_BUFFER = 0xe4,
HPI_ADDR_INIT_BUFFER = 0xea,
HPI_ADDR_INTR_RET_VALUE = 0xee,
HPI_ADDR_INTR_RET_DATA = 0xec,
HPI_ADDR_INTR_STATUS = 0xf4,
HPI_ADDR_INTR_WR_PARAM = 0xf6,
HPI_ADDR_INTR_WR_INDEX = 0xf8,
};
enum gpio_command {
GPIO_COMMAND_RESET = 0x00, /* 000b */
GPIO_COMMAND_REQ1 = 0x04, /* 001b */
GPIO_COMMAND_WRITE = 0x20, /* 010b */
GPIO_COMMAND_REQ2 = 0x24, /* 011b */
GPIO_COMMAND_READ = 0x80, /* 100b */
GPIO_COMMAND_VIDEO = 0x84, /* 101b */
GPIO_COMMAND_IDLE = 0xA0, /* 110b */
GPIO_COMMAND_ADDR = 0xA4, /* 111b */
};
struct saa7134_go7007 {
struct saa7134_dev *dev;
u8 *top;
u8 *bottom;
dma_addr_t top_dma;
dma_addr_t bottom_dma;
};
static struct go7007_board_info board_voyager = {
.firmware = "go7007tv.bin",
.flags = 0,
.sensor_flags = GO7007_SENSOR_656 |
GO7007_SENSOR_VALID_ENABLE |
GO7007_SENSOR_TV |
GO7007_SENSOR_VBI,
.audio_flags = GO7007_AUDIO_I2S_MODE_1 |
GO7007_AUDIO_WORD_16,
.audio_rate = 48000,
.audio_bclk_div = 8,
.audio_main_div = 2,
.hpi_buffer_cap = 7,
.num_inputs = 1,
.inputs = {
{
.name = "SAA7134",
},
},
};
MODULE_FIRMWARE("go7007tv.bin");
/********************* Driver for GPIO HPI interface *********************/
static int gpio_write(struct saa7134_dev *dev, u8 addr, u16 data)
{
saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
/* Write HPI address */
saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
/* Write low byte */
saa_writeb(SAA7134_GPIO_GPSTATUS0, data & 0xff);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
/* Write high byte */
saa_writeb(SAA7134_GPIO_GPSTATUS0, data >> 8);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
return 0;
}
static int gpio_read(struct saa7134_dev *dev, u8 addr, u16 *data)
{
saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
/* Write HPI address */
saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
/* Read low byte */
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
*data = saa_readb(SAA7134_GPIO_GPSTATUS0);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
/* Read high byte */
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
*data |= saa_readb(SAA7134_GPIO_GPSTATUS0) << 8;
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
return 0;
}
static int saa7134_go7007_interface_reset(struct go7007 *go)
{
struct saa7134_go7007 *saa = go->hpi_context;
struct saa7134_dev *dev = saa->dev;
u32 status;
u16 intr_val, intr_data;
int count = 20;
saa_clearb(SAA7134_TS_PARALLEL, 0x80); /* Disable TS interface */
saa_writeb(SAA7134_GPIO_GPMODE2, 0xa4);
saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_RESET);
msleep(1);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
msleep(10);
saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
status = saa_readb(SAA7134_GPIO_GPSTATUS2);
/*printk(KERN_DEBUG "status is %s\n", status & 0x40 ? "OK" : "not OK"); */
/* enter command mode...(?) */
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
do {
saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
status = saa_readb(SAA7134_GPIO_GPSTATUS2);
/*printk(KERN_INFO "gpio is %08x\n", saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)); */
} while (--count > 0);
/* Wait for an interrupt to indicate successful hardware reset */
if (go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
(intr_val & ~0x1) != 0x55aa) {
printk(KERN_ERR
"saa7134-go7007: unable to reset the GO7007\n");
return -1;
}
return 0;
}
static int saa7134_go7007_write_interrupt(struct go7007 *go, int addr, int data)
{
struct saa7134_go7007 *saa = go->hpi_context;
struct saa7134_dev *dev = saa->dev;
int i;
u16 status_reg;
#ifdef GO7007_HPI_DEBUG
printk(KERN_DEBUG
"saa7134-go7007: WriteInterrupt: %04x %04x\n", addr, data);
#endif
for (i = 0; i < 100; ++i) {
gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
if (!(status_reg & 0x0010))
break;
msleep(10);
}
if (i == 100) {
printk(KERN_ERR
"saa7134-go7007: device is hung, status reg = 0x%04x\n",
status_reg);
return -1;
}
gpio_write(dev, HPI_ADDR_INTR_WR_PARAM, data);
gpio_write(dev, HPI_ADDR_INTR_WR_INDEX, addr);
return 0;
}
static int saa7134_go7007_read_interrupt(struct go7007 *go)
{
struct saa7134_go7007 *saa = go->hpi_context;
struct saa7134_dev *dev = saa->dev;
/* XXX we need to wait if there is no interrupt available */
go->interrupt_available = 1;
gpio_read(dev, HPI_ADDR_INTR_RET_VALUE, &go->interrupt_value);
gpio_read(dev, HPI_ADDR_INTR_RET_DATA, &go->interrupt_data);
#ifdef GO7007_HPI_DEBUG
printk(KERN_DEBUG "saa7134-go7007: ReadInterrupt: %04x %04x\n",
go->interrupt_value, go->interrupt_data);
#endif
return 0;
}
static void saa7134_go7007_irq_ts_done(struct saa7134_dev *dev,
unsigned long status)
{
struct go7007 *go = video_get_drvdata(dev->empress_dev);
struct saa7134_go7007 *saa = go->hpi_context;
if (!go->streaming)
return;
if (0 != (status & 0x000f0000))
printk(KERN_DEBUG "saa7134-go7007: irq: lost %ld\n",
(status >> 16) & 0x0f);
if (status & 0x100000) {
dma_sync_single_for_cpu(&dev->pci->dev,
saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
go7007_parse_video_stream(go, saa->bottom, PAGE_SIZE);
saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
} else {
dma_sync_single_for_cpu(&dev->pci->dev,
saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
go7007_parse_video_stream(go, saa->top, PAGE_SIZE);
saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
}
}
static int saa7134_go7007_stream_start(struct go7007 *go)
{
struct saa7134_go7007 *saa = go->hpi_context;
struct saa7134_dev *dev = saa->dev;
saa->top_dma = dma_map_page(&dev->pci->dev, virt_to_page(saa->top),
0, PAGE_SIZE, DMA_FROM_DEVICE);
if (!saa->top_dma)
return -ENOMEM;
saa->bottom_dma = dma_map_page(&dev->pci->dev,
virt_to_page(saa->bottom),
0, PAGE_SIZE, DMA_FROM_DEVICE);
if (!saa->bottom_dma) {
dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
DMA_FROM_DEVICE);
return -ENOMEM;
}
saa_writel(SAA7134_VIDEO_PORT_CTRL0 >> 2, 0xA300B000);
saa_writel(SAA7134_VIDEO_PORT_CTRL4 >> 2, 0x40000200);
/* Set HPI interface for video */
saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_VIDEO_BUFFER);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
/* Enable TS interface */
saa_writeb(SAA7134_TS_PARALLEL, 0xe6);
/* Reset TS interface */
saa_setb(SAA7134_TS_SERIAL1, 0x01);
saa_clearb(SAA7134_TS_SERIAL1, 0x01);
/* Set up transfer block size */
saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 128 - 1);
saa_writeb(SAA7134_TS_DMA0, (PAGE_SIZE >> 7) - 1);
saa_writeb(SAA7134_TS_DMA1, 0);
saa_writeb(SAA7134_TS_DMA2, 0);
/* Enable video streaming mode */
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_VIDEO);
saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
saa_writel(SAA7134_RS_PITCH(5), 128);
saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_MAX);
/* Enable TS FIFO */
saa_setl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
/* Enable DMA IRQ */
saa_setl(SAA7134_IRQ1,
SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
return 0;
}
static int saa7134_go7007_stream_stop(struct go7007 *go)
{
struct saa7134_go7007 *saa = go->hpi_context;
struct saa7134_dev *dev;
if (!saa)
return -EINVAL;
dev = saa->dev;
if (!dev)
return -EINVAL;
/* Shut down TS FIFO */
saa_clearl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
/* Disable DMA IRQ */
saa_clearl(SAA7134_IRQ1,
SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
/* Disable TS interface */
saa_clearb(SAA7134_TS_PARALLEL, 0x80);
dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
DMA_FROM_DEVICE);
dma_unmap_page(&dev->pci->dev, saa->bottom_dma, PAGE_SIZE,
DMA_FROM_DEVICE);
return 0;
}
static int saa7134_go7007_send_firmware(struct go7007 *go, u8 *data, int len)
{
struct saa7134_go7007 *saa = go->hpi_context;
struct saa7134_dev *dev = saa->dev;
u16 status_reg;
int i;
#ifdef GO7007_HPI_DEBUG
printk(KERN_DEBUG "saa7134-go7007: DownloadBuffer "
"sending %d bytes\n", len);
#endif
while (len > 0) {
i = len > 64 ? 64 : len;
saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_INIT_BUFFER);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
while (i-- > 0) {
saa_writeb(SAA7134_GPIO_GPSTATUS0, *data);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
++data;
--len;
}
for (i = 0; i < 100; ++i) {
gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
if (!(status_reg & 0x0002))
break;
}
if (i == 100) {
printk(KERN_ERR "saa7134-go7007: device is hung, "
"status reg = 0x%04x\n", status_reg);
return -1;
}
}
return 0;
}
static int saa7134_go7007_send_command(struct go7007 *go, unsigned int cmd,
void *arg)
{
struct saa7134_go7007 *saa = go->hpi_context;
struct saa7134_dev *dev = saa->dev;
switch (cmd) {
case VIDIOC_S_STD:
{
v4l2_std_id *std = arg;
return saa7134_s_std_internal(dev, NULL, std);
}
case VIDIOC_G_STD:
{
v4l2_std_id *std = arg;
*std = dev->tvnorm->id;
return 0;
}
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *ctrl = arg;
if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
return saa7134_queryctrl(NULL, NULL, ctrl);
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl = arg;
if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
return saa7134_g_ctrl_internal(dev, NULL, ctrl);
}
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl = arg;
if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
return saa7134_s_ctrl_internal(dev, NULL, ctrl);
}
}
return -EINVAL;
}
static struct go7007_hpi_ops saa7134_go7007_hpi_ops = {
.interface_reset = saa7134_go7007_interface_reset,
.write_interrupt = saa7134_go7007_write_interrupt,
.read_interrupt = saa7134_go7007_read_interrupt,
.stream_start = saa7134_go7007_stream_start,
.stream_stop = saa7134_go7007_stream_stop,
.send_firmware = saa7134_go7007_send_firmware,
.send_command = saa7134_go7007_send_command,
};
/********************* Add/remove functions *********************/
static int saa7134_go7007_init(struct saa7134_dev *dev)
{
struct go7007 *go;
struct saa7134_go7007 *saa;
printk(KERN_DEBUG "saa7134-go7007: probing new SAA713X board\n");
saa = kzalloc(sizeof(struct saa7134_go7007), GFP_KERNEL);
if (saa == NULL)
return -ENOMEM;
/* Allocate a couple pages for receiving the compressed stream */
saa->top = (u8 *)get_zeroed_page(GFP_KERNEL);
if (!saa->top)
goto allocfail;
saa->bottom = (u8 *)get_zeroed_page(GFP_KERNEL);
if (!saa->bottom)
goto allocfail;
go = go7007_alloc(&board_voyager, &dev->pci->dev);
if (go == NULL)
goto allocfail;
go->board_id = GO7007_BOARDID_PCI_VOYAGER;
strncpy(go->name, saa7134_boards[dev->board].name, sizeof(go->name));
go->hpi_ops = &saa7134_go7007_hpi_ops;
go->hpi_context = saa;
saa->dev = dev;
/* Boot the GO7007 */
if (go7007_boot_encoder(go, go->board_info->flags &
GO7007_BOARD_USE_ONBOARD_I2C) < 0)
goto initfail;
/* Do any final GO7007 initialization, then register the
* V4L2 and ALSA interfaces */
if (go7007_register_encoder(go) < 0)
goto initfail;
dev->empress_dev = go->video_dev;
video_set_drvdata(dev->empress_dev, go);
go->status = STATUS_ONLINE;
return 0;
initfail:
go->status = STATUS_SHUTDOWN;
return 0;
allocfail:
if (saa->top)
free_page((unsigned long)saa->top);
if (saa->bottom)
free_page((unsigned long)saa->bottom);
kfree(saa);
return -ENOMEM;
}
static int saa7134_go7007_fini(struct saa7134_dev *dev)
{
struct go7007 *go;
struct saa7134_go7007 *saa;
if (NULL == dev->empress_dev)
return 0;
go = video_get_drvdata(dev->empress_dev);
saa = go->hpi_context;
go->status = STATUS_SHUTDOWN;
free_page((unsigned long)saa->top);
free_page((unsigned long)saa->bottom);
kfree(saa);
go7007_remove(go);
dev->empress_dev = NULL;
return 0;
}
static struct saa7134_mpeg_ops saa7134_go7007_ops = {
.type = SAA7134_MPEG_GO7007,
.init = saa7134_go7007_init,
.fini = saa7134_go7007_fini,
.irq_ts_done = saa7134_go7007_irq_ts_done,
};
static int __init saa7134_go7007_mod_init(void)
{
return saa7134_ts_register(&saa7134_go7007_ops);
}
static void __exit saa7134_go7007_mod_cleanup(void)
{
saa7134_ts_unregister(&saa7134_go7007_ops);
}
module_init(saa7134_go7007_mod_init);
module_exit(saa7134_go7007_mod_cleanup);
MODULE_LICENSE("GPL v2");