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linux/drivers/media/video/cx231xx/cx231xx-core.c

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/*
cx231xx-core.c - driver for Conexant Cx23100/101/102 USB video capture devices
Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
Based on em28xx driver
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/vmalloc.h>
#include <media/v4l2-common.h>
#include "cx231xx.h"
#include "cx231xx-reg.h"
/* #define ENABLE_DEBUG_ISOC_FRAMES */
static unsigned int core_debug;
module_param(core_debug,int,0644);
MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
#define cx231xx_coredbg(fmt, arg...) do {\
if (core_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __func__ , ##arg); } while (0)
static unsigned int reg_debug;
module_param(reg_debug,int,0644);
MODULE_PARM_DESC(reg_debug,"enable debug messages [URB reg]");
#define cx231xx_regdbg(fmt, arg...) do {\
if (reg_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __func__ , ##arg); } while (0)
static int alt = CX231XX_PINOUT;
module_param(alt, int, 0644);
MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
/* FIXME */
#define cx231xx_isocdbg(fmt, arg...) do {\
if (core_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __func__ , ##arg); } while (0)
/************************************************************************************
* Device control list functions *
*************************************************************************************/
static LIST_HEAD(cx231xx_devlist);
static DEFINE_MUTEX(cx231xx_devlist_mutex);
struct cx231xx *cx231xx_get_device(int minor,
enum v4l2_buf_type *fh_type,
int *has_radio)
{
struct cx231xx *h, *dev = NULL;
*fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
*has_radio = 0;
mutex_lock(&cx231xx_devlist_mutex);
list_for_each_entry(h, &cx231xx_devlist, devlist) {
if (h->vdev->minor == minor)
dev = h;
if (h->vbi_dev->minor == minor) {
dev = h;
*fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
}
if (h->radio_dev &&
h->radio_dev->minor == minor) {
dev = h;
*has_radio = 1;
}
}
mutex_unlock(&cx231xx_devlist_mutex);
return dev;
}
/*
* cx231xx_realease_resources()
* unregisters the v4l2,i2c and usb devices
* called when the device gets disconected or at module unload
*/
void cx231xx_remove_from_devlist(struct cx231xx *dev)
{
mutex_lock(&cx231xx_devlist_mutex);
list_del(&dev->devlist);
mutex_unlock(&cx231xx_devlist_mutex);
};
void cx231xx_add_into_devlist(struct cx231xx *dev)
{
mutex_lock(&cx231xx_devlist_mutex);
list_add_tail(&dev->devlist, &cx231xx_devlist);
mutex_unlock(&cx231xx_devlist_mutex);
};
static LIST_HEAD(cx231xx_extension_devlist);
static DEFINE_MUTEX(cx231xx_extension_devlist_lock);
int cx231xx_register_extension(struct cx231xx_ops *ops)
{
struct cx231xx *dev = NULL;
mutex_lock(&cx231xx_devlist_mutex);
mutex_lock(&cx231xx_extension_devlist_lock);
list_add_tail(&ops->next, &cx231xx_extension_devlist);
list_for_each_entry(dev, &cx231xx_devlist, devlist) {
if (dev)
ops->init(dev);
}
cx231xx_info("Cx231xx: Initialized (%s) extension\n", ops->name);
mutex_unlock(&cx231xx_extension_devlist_lock);
mutex_unlock(&cx231xx_devlist_mutex);
return 0;
}
EXPORT_SYMBOL(cx231xx_register_extension);
void cx231xx_unregister_extension(struct cx231xx_ops *ops)
{
struct cx231xx *dev = NULL;
mutex_lock(&cx231xx_devlist_mutex);
list_for_each_entry(dev, &cx231xx_devlist, devlist) {
if (dev)
ops->fini(dev);
}
mutex_lock(&cx231xx_extension_devlist_lock);
cx231xx_info("Cx231xx: Removed (%s) extension\n", ops->name);
list_del(&ops->next);
mutex_unlock(&cx231xx_extension_devlist_lock);
mutex_unlock(&cx231xx_devlist_mutex);
}
EXPORT_SYMBOL(cx231xx_unregister_extension);
void cx231xx_init_extension(struct cx231xx *dev)
{
struct cx231xx_ops *ops = NULL;
mutex_lock(&cx231xx_extension_devlist_lock);
if (!list_empty(&cx231xx_extension_devlist)) {
list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
if (ops->init)
ops->init(dev);
}
}
mutex_unlock(&cx231xx_extension_devlist_lock);
}
void cx231xx_close_extension(struct cx231xx *dev)
{
struct cx231xx_ops *ops = NULL;
mutex_lock(&cx231xx_extension_devlist_lock);
if (!list_empty(&cx231xx_extension_devlist)) {
list_for_each_entry(ops, &cx231xx_extension_devlist, next) {
if (ops->fini)
ops->fini(dev);
}
}
mutex_unlock(&cx231xx_extension_devlist_lock);
}
/************************************************************************************
* U S B related functions *
*************************************************************************************/
int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
struct cx231xx_i2c_xfer_data *req_data)
{
int status = 0;
struct cx231xx *dev = i2c_bus->dev;
VENDOR_REQUEST_IN ven_req;
u8 saddr_len = 0;
u8 _i2c_period = 0;
u8 _i2c_nostop = 0;
u8 _i2c_reserve = 0;
/* Get the I2C period, nostop and reserve parameters */
_i2c_period = i2c_bus->i2c_period;
_i2c_nostop = i2c_bus->i2c_nostop;
_i2c_reserve = i2c_bus->i2c_reserve;
saddr_len = req_data->saddr_len;
/* Set wValue */
if(saddr_len == 1) /* need check saddr_len == 0 */
ven_req.wValue = req_data->dev_addr<<9|_i2c_period<<4|saddr_len<<2|
_i2c_nostop<<1|I2C_SYNC|_i2c_reserve<<6;
else
ven_req.wValue = req_data->dev_addr<<9|_i2c_period<<4|saddr_len<<2|
_i2c_nostop<<1|I2C_SYNC|_i2c_reserve<<6;
/* set channel number */
if(req_data->direction & I2C_M_RD)
ven_req.bRequest = i2c_bus->nr + 4; /* channel number, for read,
spec required channel_num +4 */
else
ven_req.bRequest = i2c_bus->nr; /* channel number, */
/* set index value */
switch(saddr_len){
case 0:
ven_req.wIndex = 0; /* need check */
break;
case 1:
ven_req.wIndex = (req_data->saddr_dat & 0xff);
break;
case 2:
ven_req.wIndex = req_data->saddr_dat;
break;
}
/* set wLength value */
ven_req.wLength = req_data->buf_size;
/* set bData value */
ven_req.bData = 0;
/* set the direction */
if(req_data->direction){
ven_req.direction = USB_DIR_IN;
memset(req_data->p_buffer, 0x00, ven_req.wLength);
}
else
ven_req.direction = USB_DIR_OUT;
/* set the buffer for read / write */
ven_req.pBuff = req_data->p_buffer;
/* call common vendor command request */
status = cx231xx_send_vendor_cmd(dev, &ven_req);
if (status < 0) {
cx231xx_info("UsbInterface::sendCommand, output buffer failed with status -%d\n", status);
}
return status;
}
EXPORT_SYMBOL_GPL(cx231xx_send_usb_command);
/*
* cx231xx_read_ctrl_reg()
* reads data from the usb device specifying bRequest and wValue
*/
int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
char *buf, int len)
{
u8 val = 0;
int ret;
int pipe = usb_rcvctrlpipe(dev->udev, 0);
if (dev->state & DEV_DISCONNECTED)
return -ENODEV;
if (len > URB_MAX_CTRL_SIZE)
return -EINVAL;
switch(len)
{
case 1:
val = ENABLE_ONE_BYTE;
break;
case 2:
val = ENABLE_TWE_BYTE;
break;
case 3:
val = ENABLE_THREE_BYTE;
break;
case 4:
val = ENABLE_FOUR_BYTE;
break;
default:
val = 0xFF; /* invalid option */
}
if(val == 0xFF)
return -EINVAL;
if (reg_debug) {
cx231xx_isocdbg("(pipe 0x%08x): "
"IN: %02x %02x %02x %02x %02x %02x %02x %02x ",
pipe,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
req, 0, val,
reg & 0xff, reg >> 8,
len & 0xff, len >> 8);
}
/* mutex_lock(&dev->ctrl_urb_lock); */
ret = usb_control_msg(dev->udev, pipe, req,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
val, reg, dev->urb_buf, len, HZ);
if (ret < 0) {
cx231xx_isocdbg(" failed!\n");
/* mutex_unlock(&dev->ctrl_urb_lock); */
return ret;
}
if (len)
memcpy(buf, dev->urb_buf, len);
/* mutex_unlock(&dev->ctrl_urb_lock); */
if (reg_debug) {
int byte;
cx231xx_isocdbg("<<<");
for (byte = 0; byte < len; byte++)
cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
cx231xx_isocdbg("\n");
}
return ret;
}
int cx231xx_send_vendor_cmd(struct cx231xx *dev, VENDOR_REQUEST_IN *ven_req)
{
int ret;
int pipe = 0;
if (dev->state & DEV_DISCONNECTED)
return -ENODEV;
if ((ven_req->wLength > URB_MAX_CTRL_SIZE))
return -EINVAL;
if(ven_req->direction)
pipe = usb_rcvctrlpipe(dev->udev, 0);
else
pipe = usb_sndctrlpipe(dev->udev, 0);
if (reg_debug) {
int byte;
cx231xx_isocdbg("(pipe 0x%08x): "
"OUT: %02x %02x %02x %04x %04x %04x >>>",
pipe,
ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
ven_req->bRequest, 0, ven_req->wValue,
ven_req->wIndex,
ven_req->wLength);
for (byte = 0; byte < ven_req->wLength; byte++)
cx231xx_isocdbg(" %02x", (unsigned char)ven_req->pBuff[byte]);
cx231xx_isocdbg("\n");
}
/* mutex_lock(&dev->ctrl_urb_lock); */
ret = usb_control_msg(dev->udev, pipe, ven_req->bRequest,
ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
ven_req->wValue, ven_req->wIndex, ven_req->pBuff, ven_req->wLength, HZ);
/* mutex_unlock(&dev->ctrl_urb_lock); */
return ret;
}
/*
* cx231xx_write_ctrl_reg()
* sends data to the usb device, specifying bRequest
*/
int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf,
int len)
{
u8 val = 0;
int ret;
int pipe = usb_sndctrlpipe(dev->udev, 0);
if (dev->state & DEV_DISCONNECTED)
return -ENODEV;
if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
return -EINVAL;
switch(len)
{
case 1:
val = ENABLE_ONE_BYTE;
break;
case 2:
val = ENABLE_TWE_BYTE;
break;
case 3:
val = ENABLE_THREE_BYTE;
break;
case 4:
val = ENABLE_FOUR_BYTE;
break;
default:
val = 0xFF; /* invalid option */
}
if(val == 0xFF)
return -EINVAL;
if (reg_debug) {
int byte;
cx231xx_isocdbg("(pipe 0x%08x): "
"OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>",
pipe,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
req, 0, val,
reg & 0xff, reg >> 8,
len & 0xff, len >> 8);
for (byte = 0; byte < len; byte++)
cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]);
cx231xx_isocdbg("\n");
}
/* mutex_lock(&dev->ctrl_urb_lock); */
memcpy(dev->urb_buf, buf, len);
ret = usb_control_msg(dev->udev, pipe, req,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
val, reg, dev->urb_buf, len, HZ);
/* mutex_unlock(&dev->ctrl_urb_lock); */
return ret;
}
/************************************************************************************
* USB Alternate Setting functions *
*************************************************************************************/
int cx231xx_set_video_alternate(struct cx231xx *dev)
{
int errCode, prev_alt = dev->video_mode.alt;
unsigned int min_pkt_size = dev->width * 2 + 4;
u32 usb_interface_index = 0;
/* When image size is bigger than a certain value,
the frame size should be increased, otherwise, only
green screen will be received.
*/
if (dev->width * 2 * dev->height > 720 * 240 * 2)
min_pkt_size *= 2;
if(dev->width > 360) {
/* resolutions: 720,704,640 */
dev->video_mode.alt = 3;
} else if(dev->width > 180) {
/* resolutions: 360,352,320,240 */
dev->video_mode.alt = 2;
} else if(dev->width > 0) {
/* resolutions: 180,176,160,128,88 */
dev->video_mode.alt = 1;
} else {
/* Change to alt0 BULK to release USB bandwidth */
dev->video_mode.alt = 0;
}
/* Get the correct video interface Index */
usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.video_index+1;
if (dev->video_mode.alt != prev_alt) {
cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
min_pkt_size, dev->video_mode.alt);
dev->video_mode.max_pkt_size = dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
dev->video_mode.alt, dev->video_mode.max_pkt_size);
cx231xx_info(" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n",
dev->video_mode.alt, dev->video_mode.max_pkt_size, usb_interface_index);
errCode = usb_set_interface(dev->udev, usb_interface_index, dev->video_mode.alt);
if (errCode < 0) {
cx231xx_errdev("cannot change alternate number to %d (error=%i)\n",
dev->video_mode.alt, errCode);
return errCode;
}
}
return 0;
}
int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt)
{
int status = 0;
u32 usb_interface_index = 0;
u32 max_pkt_size = 0;
switch(index) {
case INDEX_TS1:
usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.ts1_index+1;
dev->video_mode.alt = alt;
if(dev->ts1_mode.alt_max_pkt_size != NULL)
max_pkt_size = dev->ts1_mode.max_pkt_size = dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt];
break;
case INDEX_TS2:
usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.ts2_index+1;
break;
case INDEX_AUDIO:
usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.audio_index+1;
dev->adev.alt = alt;
if( dev->adev.alt_max_pkt_size != NULL)
max_pkt_size = dev->adev.max_pkt_size = dev->adev.alt_max_pkt_size[dev->adev.alt];
break;
case INDEX_VIDEO:
usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.video_index+1;
dev->video_mode.alt = alt;
if(dev->video_mode.alt_max_pkt_size != NULL)
max_pkt_size = dev->video_mode.max_pkt_size = dev->video_mode.alt_max_pkt_size[dev->video_mode.alt];
break;
case INDEX_VANC:
usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.vanc_index+1;
dev->vbi_mode.alt = alt;
if(dev->vbi_mode.alt_max_pkt_size != NULL)
max_pkt_size = dev->vbi_mode.max_pkt_size = dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt];
break;
case INDEX_HANC:
usb_interface_index = dev->current_pcb_config.hs_config_info[0].interface_info.hanc_index+1;
dev->sliced_cc_mode.alt = alt;
if(dev->sliced_cc_mode.alt_max_pkt_size != NULL)
max_pkt_size = dev->sliced_cc_mode.max_pkt_size = dev->sliced_cc_mode.alt_max_pkt_size[dev->sliced_cc_mode.alt];
break;
default:
break;
}
if(alt > 0 && max_pkt_size == 0 ) {
cx231xx_errdev("cannot change interface %d alternate number to %d : Max. Pkt size is ZERO\n",
usb_interface_index, alt);
return -1;
}
cx231xx_info(" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n",
alt, max_pkt_size, usb_interface_index);
if(usb_interface_index > 0 ) {
status = usb_set_interface(dev->udev, usb_interface_index, alt);
if (status < 0) {
cx231xx_errdev("cannot change interface %d alternate number to %d (error=%i)\n",
usb_interface_index, alt, status);
return status;
}
}
return status;
}
EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting);
int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio)
{
int rc = 0;
if (!gpio)
return rc;
/* Send GPIO reset sequences specified at board entry */
while (gpio->sleep >= 0) {
rc = cx231xx_set_gpio_value(dev, gpio->bit,
gpio->val);
if (rc < 0)
return rc;
if (gpio->sleep > 0)
msleep(gpio->sleep);
gpio++;
}
return rc;
}
int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode)
{
if (dev->mode == set_mode)
return 0;
if (set_mode == CX231XX_SUSPEND) {
/* Set the chip in power saving mode */
dev->mode = set_mode;
}
/* Resource is locked */
if (dev->mode != CX231XX_SUSPEND)
return -EINVAL;
dev->mode = set_mode;
if (dev->mode == CX231XX_DIGITAL_MODE) {
/* Set Digital power mode */
} else {
/* Set Analog Power mode*/
}
return 0;
}
EXPORT_SYMBOL_GPL(cx231xx_set_mode);
/************************************************************************************
* URB Streaming functions *
*************************************************************************************/
/*
* IRQ callback, called by URB callback
*/
static void cx231xx_irq_callback(struct urb *urb)
{
struct cx231xx_dmaqueue *dma_q = urb->context;
struct cx231xx_video_mode *vmode = container_of(dma_q, struct cx231xx_video_mode, vidq);
struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
int rc, i;
switch (urb->status) {
case 0: /* success */
case -ETIMEDOUT: /* NAK */
break;
case -ECONNRESET: /* kill */
case -ENOENT:
case -ESHUTDOWN:
return;
default: /* error */
cx231xx_isocdbg("urb completition error %d.\n", urb->status);
break;
}
/* Copy data from URB */
spin_lock(&dev->video_mode.slock);
rc = dev->video_mode.isoc_ctl.isoc_copy(dev, urb);
spin_unlock(&dev->video_mode.slock);
/* Reset urb buffers */
for (i = 0; i < urb->number_of_packets; i++) {
urb->iso_frame_desc[i].status = 0;
urb->iso_frame_desc[i].actual_length = 0;
}
urb->status = 0;
urb->status = usb_submit_urb(urb, GFP_ATOMIC);
if (urb->status) {
cx231xx_isocdbg("urb resubmit failed (error=%i)\n",
urb->status);
}
}
/*
* Stop and Deallocate URBs
*/
void cx231xx_uninit_isoc(struct cx231xx *dev)
{
struct urb *urb;
int i;
cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n");
dev->video_mode.isoc_ctl.nfields = -1;
for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
urb = dev->video_mode.isoc_ctl.urb[i];
if (urb) {
if (!irqs_disabled())
usb_kill_urb(urb);
else
usb_unlink_urb(urb);
if (dev->video_mode.isoc_ctl.transfer_buffer[i]) {
usb_buffer_free(dev->udev,
urb->transfer_buffer_length,
dev->video_mode.isoc_ctl.transfer_buffer[i],
urb->transfer_dma);
}
usb_free_urb(urb);
dev->video_mode.isoc_ctl.urb[i] = NULL;
}
dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL;
}
kfree(dev->video_mode.isoc_ctl.urb);
kfree(dev->video_mode.isoc_ctl.transfer_buffer);
dev->video_mode.isoc_ctl.urb = NULL;
dev->video_mode.isoc_ctl.transfer_buffer = NULL;
dev->video_mode.isoc_ctl.num_bufs = 0;
cx231xx_capture_start(dev, 0, Raw_Video);
}
EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
/*
* Allocate URBs and start IRQ
*/
int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
int num_bufs, int max_pkt_size,
int (*isoc_copy) (struct cx231xx *dev, struct urb *urb))
{
struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
int i;
int sb_size, pipe;
struct urb *urb;
int j, k;
int rc;
cx231xx_isocdbg("cx231xx: called cx231xx_prepare_isoc\n");
dev->video_input = dev->video_input > 2?2:dev->video_input;
cx231xx_info("Setting Video mux to %d\n",dev->video_input);
video_mux(dev, dev->video_input);
/* De-allocates all pending stuff */
cx231xx_uninit_isoc(dev);
dev->video_mode.isoc_ctl.isoc_copy = isoc_copy;
dev->video_mode.isoc_ctl.num_bufs = num_bufs;
dma_q->pos = 0;
dma_q->is_partial_line = 0;
dma_q->last_sav = 0;
dma_q->current_field = -1;
dma_q->field1_done = 0;
dma_q->lines_per_field = dev->height/2;
dma_q->bytes_left_in_line = dev->width << 1;
dma_q->lines_completed = 0;
for(i = 0; i < 8 ; i++)
dma_q->partial_buf[i] = 0;
dev->video_mode.isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
if (!dev->video_mode.isoc_ctl.urb) {
cx231xx_errdev("cannot alloc memory for usb buffers\n");
return -ENOMEM;
}
dev->video_mode.isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
GFP_KERNEL);
if (!dev->video_mode.isoc_ctl.transfer_buffer) {
cx231xx_errdev("cannot allocate memory for usbtransfer\n");
kfree(dev->video_mode.isoc_ctl.urb);
return -ENOMEM;
}
dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size;
dev->video_mode.isoc_ctl.buf = NULL;
sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size;
/* allocate urbs and transfer buffers */
for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
urb = usb_alloc_urb(max_packets, GFP_KERNEL);
if (!urb) {
cx231xx_err("cannot alloc isoc_ctl.urb %i\n", i);
cx231xx_uninit_isoc(dev);
return -ENOMEM;
}
dev->video_mode.isoc_ctl.urb[i] = urb;
dev->video_mode.isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->udev,
sb_size, GFP_KERNEL, &urb->transfer_dma);
if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) {
cx231xx_err("unable to allocate %i bytes for transfer"
" buffer %i%s\n",
sb_size, i,
in_interrupt()?" while in int":"");
cx231xx_uninit_isoc(dev);
return -ENOMEM;
}
memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size);
pipe = usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr);
usb_fill_int_urb(urb, dev->udev, pipe,
dev->video_mode.isoc_ctl.transfer_buffer[i], sb_size,
cx231xx_irq_callback, dma_q, 1);
urb->number_of_packets = max_packets;
urb->transfer_flags = URB_ISO_ASAP;
k = 0;
for (j = 0; j < max_packets; j++) {
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length =
dev->video_mode.isoc_ctl.max_pkt_size;
k += dev->video_mode.isoc_ctl.max_pkt_size;
}
}
init_waitqueue_head(&dma_q->wq);
/* submit urbs and enables IRQ */
for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i], GFP_ATOMIC);
if (rc) {
cx231xx_err("submit of urb %i failed (error=%i)\n", i,
rc);
cx231xx_uninit_isoc(dev);
return rc;
}
}
cx231xx_capture_start(dev, 1, Raw_Video);
return 0;
}
EXPORT_SYMBOL_GPL(cx231xx_init_isoc);
/************************************************************************************
* Device Init/UnInit functions *
*************************************************************************************/
int cx231xx_dev_init(struct cx231xx *dev)
{
int errCode = 0;
/* Initialize I2C bus */
/* External Master 1 Bus */
dev->i2c_bus[0].nr = 0;
dev->i2c_bus[0].dev = dev;
dev->i2c_bus[0].i2c_period = I2C_SPEED_1M; /* 1MHz */
dev->i2c_bus[0].i2c_nostop = 0;
dev->i2c_bus[0].i2c_reserve = 0;
/* External Master 2 Bus */
dev->i2c_bus[1].nr = 1;
dev->i2c_bus[1].dev = dev;
dev->i2c_bus[1].i2c_period = I2C_SPEED_1M; /* 1MHz */
dev->i2c_bus[1].i2c_nostop = 0;
dev->i2c_bus[1].i2c_reserve = 0;
/* Internal Master 3 Bus */
dev->i2c_bus[2].nr = 2;
dev->i2c_bus[2].dev = dev;
dev->i2c_bus[2].i2c_period = I2C_SPEED_400K; /* 400kHz */
dev->i2c_bus[2].i2c_nostop = 0;
dev->i2c_bus[2].i2c_reserve = 0;
/* register I2C buses */
cx231xx_i2c_register(&dev->i2c_bus[0]);
cx231xx_i2c_register(&dev->i2c_bus[1]);
cx231xx_i2c_register(&dev->i2c_bus[2]);
/* init hardware */
/* Note : with out calling set power mode function, colibri can not be set up correctly */
errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_set_power_mode : Failed to set Power - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* initialize Colibri block */
errCode = cx231xx_colibri_init_super_block(dev, 0x23c);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_colibri init super block - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
errCode = cx231xx_colibri_init_channels(dev);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_colibri init channels - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* Set DIF in By pass mode */
errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_dif set to By pass mode - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* flatiron related functions */
errCode = cx231xx_flatiron_initialize(dev);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_flatiron initialize - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* init control pins */
errCode = cx231xx_init_ctrl_pin_status(dev);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_init ctrl pins - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* set AGC mode to Analog */
errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1);
if (errCode < 0) {
cx231xx_errdev("%s: cx231xx_AGC mode to Analog - errCode [%d]!\n",
__func__, errCode);
return errCode;
}
/* set all alternate settings to zero initially */
cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
if(dev->board.has_dvb)
cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
/* set the I2C master port to 3 on channel 1 */
errCode = cx231xx_enable_i2c_for_tuner(dev, I2C_3);
return errCode;
}
EXPORT_SYMBOL_GPL(cx231xx_dev_init);
void cx231xx_dev_uninit(struct cx231xx *dev)
{
/* Un Initialize I2C bus */
cx231xx_i2c_unregister(&dev->i2c_bus[2]);
cx231xx_i2c_unregister(&dev->i2c_bus[1]);
cx231xx_i2c_unregister(&dev->i2c_bus[0]);
}
EXPORT_SYMBOL_GPL(cx231xx_dev_uninit);
/************************************************************************************
* G P I O related functions *
*************************************************************************************/
int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8* gpio_val,
u8 len, u8 request, u8 direction)
{
int status = 0;
VENDOR_REQUEST_IN ven_req;
/* Set wValue */
ven_req.wValue = (u16)(gpio_bit>>16 & 0xffff);
/* set request */
if(!request){
if(direction)
ven_req.bRequest = VRT_GET_GPIO; /* 0x8 gpio */
else
ven_req.bRequest = VRT_SET_GPIO; /* 0x9 gpio */
}
else {
if(direction)
ven_req.bRequest = VRT_GET_GPIE; /* 0xa gpie */
else
ven_req.bRequest = VRT_SET_GPIE; /* 0xb gpie */
}
/* set index value */
ven_req.wIndex = (u16)(gpio_bit & 0xffff);
/* set wLength value */
ven_req.wLength = len;
/* set bData value */
ven_req.bData = 0;
/* set the buffer for read / write */
ven_req.pBuff = gpio_val;
/* set the direction */
if(direction){
ven_req.direction = USB_DIR_IN;
memset(ven_req.pBuff, 0x00, ven_req.wLength);
}
else
ven_req.direction = USB_DIR_OUT;
/* call common vendor command request */
status = cx231xx_send_vendor_cmd(dev, &ven_req);
if (status < 0)
{
cx231xx_info("UsbInterface::sendCommand, output buffer failed with status -%d\n", status);
}
return status;
}
EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd);
/*************************************************************************************
* C O N T R O L - Register R E A D / W R I T E functions *
*************************************************************************************/
int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode)
{
u8 value[4] = {0x0, 0x0, 0x0, 0x0};
u32 tmp =0;
int status = 0;
status = cx231xx_read_ctrl_reg(dev,VRT_GET_REGISTER, address,value,4);
if(status < 0)
return status;
tmp = *((u32 *)value);
tmp |= mode;
value[0]=(u8) tmp;
value[1]=(u8)(tmp>>8);
value[2]=(u8)(tmp>>16);
value[3]=(u8)(tmp>>24);
status = cx231xx_write_ctrl_reg(dev,VRT_SET_REGISTER, address,value,4);
return status;
}
/*************************************************************************************
* I 2 C Internal C O N T R O L functions *
*************************************************************************************/
int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
u8 saddr_len, u32 *data, u8 data_len)
{
int status = 0;
struct cx231xx_i2c_xfer_data req_data;
u8 value[4] ={0,0,0,0};
if(saddr_len == 0)
saddr = 0;
else if(saddr_len == 0)
saddr &= 0xff;
/* prepare xfer_data struct */
req_data.dev_addr = dev_addr >> 1;
req_data.direction = I2C_M_RD;
req_data.saddr_len = saddr_len;
req_data.saddr_dat = saddr;
req_data.buf_size = data_len;
req_data.p_buffer = (u8*)value;
/* usb send command */
status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
if(status >= 0)
{
/* Copy the data read back to main buffer */
if(data_len == 1)
*data = value[0];
else
*data = value[0] | value[1] << 8 | value[2] << 16 | value[3] << 24;
}
return status;
}
int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr,
u8 saddr_len, u32 data, u8 data_len)
{
int status = 0;
u8 value[4] ={0,0,0,0};
struct cx231xx_i2c_xfer_data req_data;
value[0]=(u8)data;
value[1]=(u8)(data>>8);
value[2]=(u8)(data>>16);
value[3]=(u8)(data>>24);
if(saddr_len == 0)
saddr = 0;
else if(saddr_len == 0)
saddr &= 0xff;
/* prepare xfer_data struct */
req_data.dev_addr = dev_addr >> 1;
req_data.direction = 0;
req_data.saddr_len = saddr_len;
req_data.saddr_dat = saddr;
req_data.buf_size = data_len;
req_data.p_buffer = value;
/* usb send command */
status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data);
return status;
}
int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size, u16 register_address,
u8 bit_start,u8 bit_end, u32 value)
{
int status = 0;
u32 tmp;
u32 mask = 0;
int i;
if (bit_start>(size-1) || bit_end>(size-1)) {
return -1;
}
if (size==8){
status = cx231xx_read_i2c_data(dev, dev_addr, register_address, 2, &tmp, 1);
} else {
status = cx231xx_read_i2c_data(dev, dev_addr, register_address, 2, &tmp, 4);
}
if (status < 0) {
return status;
}
mask = 1<<bit_end;
for (i=bit_end; i>bit_start&&i>0; i--) {
mask = mask + (1<<(i-1));
}
value <<= bit_start;
if (size==8)
{
tmp &= ~mask;
tmp |= value;
tmp &= 0xff;
status = cx231xx_write_i2c_data(dev, dev_addr, register_address, 2, tmp, 1);
}
else
{
tmp &= ~mask;
tmp |= value;
status = cx231xx_write_i2c_data(dev, dev_addr, register_address, 2, tmp, 4);
}
return status;
}
int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
u16 saddr, u32 mask, u32 value)
{
u32 temp;
int status = 0;
status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4);
if(status < 0)
return status;
temp &= ~mask;
temp |= value;
status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4);
return status;
}
u32 cx231xx_set_field(u32 field_mask, u32 data)
{
u32 temp;
for (temp = field_mask; (temp & 1) == 0; temp >>= 1) {
data <<= 1;
}
return data;
}
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