Skip to content

L
linux
Commit a6c2ba28 authored by akpm@osdl.org's avatar akpm@osdl.org Committed by Linus Torvalds
Browse files
Options

[PATCH] v4l: 716: support for em28xx board family 

- Added support for em28xx board family
Signed-off-by: default avatarLudovico Cavedon <cavedon@sssup.it>
Signed-off-by: default avatarMarkus Rechberger <mrechberger@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 4b017415
Show whitespace changes
Inline Side-by-side
Showing with 3938 additions and 111 deletions
drivers/media/video/em28xx/em28xx-cards.c 0 → 100644
View file @ a6c2ba28
/*
em2820-cards.c - driver for Empia EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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/module.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/usb.h>
#include <media/tuner.h>
#include "audiochip.h"
#include "tveeprom.h"
#include "msp3400.h"
#include "em2820.h"
enum em2820_board_entry {
EM2820_BOARD_TERRATEC_CINERGY_250,
EM2820_BOARD_PINNACLE_USB_2,
EM2820_BOARD_HAUPPAUGE_WINTV_USB_2,
EM2820_BOARD_MSI_VOX_USB_2
};
struct em2820_board em2820_boards[] = {
[EM2820_BOARD_TERRATEC_CINERGY_250] = {
.name = "Terratec Cinergy 250 USB",
.vchannels = 3,
.norm = VIDEO_MODE_PAL,
.tuner_type = TUNER_LG_PAL_NEW_TAPC,
.tda9887_conf = TDA9887_PRESENT,
.has_tuner = 1,
.decoder = EM2820_SAA7113,
.input = {{
.type = EM2820_VMUX_TELEVISION,
.vmux = 2,
.amux = 0,
},{
.type = EM2820_VMUX_COMPOSITE1,
.vmux = 0,
.amux = 1,
},{
.type = EM2820_VMUX_SVIDEO,
.vmux = 9,
.amux = 1,
}},
},
[EM2820_BOARD_PINNACLE_USB_2] = {
.name = "Pinnacle PCTV USB 2",
.vchannels = 3,
.norm = VIDEO_MODE_PAL,
.tuner_type = TUNER_LG_PAL_NEW_TAPC,
.tda9887_conf = TDA9887_PRESENT,
.has_tuner = 1,
.decoder = EM2820_SAA7113,
.input = {{
.type = EM2820_VMUX_TELEVISION,
.vmux = 2,
.amux = 0,
},{
.type = EM2820_VMUX_COMPOSITE1,
.vmux = 0,
.amux = 1,
},{
.type = EM2820_VMUX_SVIDEO,
.vmux = 9,
.amux = 1,
}},
},
[EM2820_BOARD_HAUPPAUGE_WINTV_USB_2] = {
.name = "Hauppauge WinTV USB 2",
.vchannels = 3,
.norm = VIDEO_MODE_NTSC,
.tuner_type = TUNER_PHILIPS_FM1236_MK3,
.tda9887_conf = TDA9887_PRESENT|TDA9887_PORT1_ACTIVE|TDA9887_PORT2_ACTIVE,
.has_tuner = 1,
.decoder = EM2820_TVP5150,
.has_msp34xx = 1,
/*FIXME: S-Video not tested */
.input = {{
.type = EM2820_VMUX_TELEVISION,
.vmux = 0,
.amux = 0,
},{
.type = EM2820_VMUX_SVIDEO,
.vmux = 2,
.amux = 1,
}},
},
[EM2820_BOARD_MSI_VOX_USB_2] = {
.name = "MSI VOX USB 2.0",
.vchannels = 3,
.norm = VIDEO_MODE_PAL,
.tuner_type = TUNER_PHILIPS_PAL,
.tda9887_conf = TDA9887_PRESENT|TDA9887_PORT1_ACTIVE|TDA9887_PORT2_ACTIVE,
.has_tuner = 1,
.decoder = EM2820_SAA7114,
.input = {{
.type = EM2820_VMUX_TELEVISION,
.vmux = 2,
.amux = 0,
},{
.type = EM2820_VMUX_COMPOSITE1,
.vmux = 0,
.amux = 1,
},{
.type = EM2820_VMUX_SVIDEO,
.vmux = 9,
.amux = 1,
}},
},
{ } /* Terminating entry */
};
/* table of devices that work with this driver */
struct usb_device_id em2820_id_table [] = {
/* Terratec Cinerhy 200 USB: em2800 nor supported, at the moment */
/* { USB_DEVICE(0xeb1a, 0x2800), .driver_info = EM2800_BOARD_TERRATEC_CINERGY_200 }, */
{ USB_DEVICE(0x0ccd, 0x0036), .driver_info = EM2820_BOARD_TERRATEC_CINERGY_250 },
{ USB_DEVICE(0x2304, 0x0208), .driver_info = EM2820_BOARD_PINNACLE_USB_2 },
{ USB_DEVICE(0x2040, 0x4200), .driver_info = EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 },
{ USB_DEVICE(0xeb1a, 0x2820), .driver_info = EM2820_BOARD_MSI_VOX_USB_2 },
{ },
};
void em2820_card_setup(struct em2820 *dev)
{
/* request some modules */
if (dev->model == EM2820_BOARD_HAUPPAUGE_WINTV_USB_2) {
struct tveeprom tv;
#ifdef CONFIG_MODULES
request_module("tveeprom");
#endif
/* Call first TVeeprom */
tveeprom_hauppauge_analog(&dev->i2c_client, &tv, dev->eedata);
dev->tuner_type= tv.tuner_type;
if (tv.audio_processor == AUDIO_CHIP_MSP34XX) {
dev->has_msp34xx=1;
} else dev->has_msp34xx=0;
}
}
EXPORT_SYMBOL(em2820_boards);
EXPORT_SYMBOL(em2820_id_table);
MODULE_DEVICE_TABLE (usb, em2820_id_table);
drivers/media/video/em28xx/em28xx-core.c 0 → 100644
View file @ a6c2ba28
/*
em2820-core.c - driver for Empia EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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/moduleparam.h>
#include <linux/videodev.h>
#include <linux/usb.h>
#include <linux/vmalloc.h>
#include "em2820.h"
/* #define ENABLE_DEBUG_ISOC_FRAMES */
unsigned int core_debug = 0;
module_param(core_debug,int,0644);
MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
#define em2820_coredbg(fmt, arg...) do {\
if (core_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __FUNCTION__ , ##arg); } while (0)
unsigned int reg_debug = 0;
module_param(reg_debug,int,0644);
MODULE_PARM_DESC(reg_debug,"enable debug messages [URB reg]");
#define em2820_regdbg(fmt, arg...) do {\
if (reg_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __FUNCTION__ , ##arg); } while (0)
unsigned int isoc_debug = 0;
module_param(isoc_debug,int,0644);
MODULE_PARM_DESC(core_debug,"enable debug messages [isoc transfers]");
#define em2820_isocdbg(fmt, arg...) do {\
if (isoc_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __FUNCTION__ , ##arg); } while (0)
static int alt = EM2820_PINOUT;
module_param(alt, int, 0644);
MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
/* ------------------------------------------------------------------ */
/* debug help functions */
static const char *v4l1_ioctls[] = {
"0", "CGAP", "GCHAN", "SCHAN", "GTUNER", "STUNER", "GPICT", "SPICT",
"CCAPTURE", "GWIN", "SWIN", "GFBUF", "SFBUF", "KEY", "GFREQ",
"SFREQ", "GAUDIO", "SAUDIO", "SYNC", "MCAPTURE", "GMBUF", "GUNIT",
"GCAPTURE", "SCAPTURE", "SPLAYMODE", "SWRITEMODE", "GPLAYINFO",
"SMICROCODE", "GVBIFMT", "SVBIFMT" };
#define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
static const char *v4l2_ioctls[] = {
"QUERYCAP", "1", "ENUM_PIXFMT", "ENUM_FBUFFMT", "G_FMT", "S_FMT",
"G_COMP", "S_COMP", "REQBUFS", "QUERYBUF", "G_FBUF", "S_FBUF",
"G_WIN", "S_WIN", "PREVIEW", "QBUF", "16", "DQBUF", "STREAMON",
"STREAMOFF", "G_PERF", "G_PARM", "S_PARM", "G_STD", "S_STD",
"ENUMSTD", "ENUMINPUT", "G_CTRL", "S_CTRL", "G_TUNER", "S_TUNER",
"G_FREQ", "S_FREQ", "G_AUDIO", "S_AUDIO", "35", "QUERYCTRL",
"QUERYMENU", "G_INPUT", "S_INPUT", "ENUMCVT", "41", "42", "43",
"44", "45", "G_OUTPUT", "S_OUTPUT", "ENUMOUTPUT", "G_AUDOUT",
"S_AUDOUT", "ENUMFX", "G_EFFECT", "S_EFFECT", "G_MODULATOR",
"S_MODULATOR"
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
void em2820_print_ioctl(char *name, unsigned int cmd)
{
char *dir;
switch (_IOC_DIR(cmd)) {
case _IOC_NONE: dir = "--"; break;
case _IOC_READ: dir = "r-"; break;
case _IOC_WRITE: dir = "-w"; break;
case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
default: dir = "??"; break;
}
switch (_IOC_TYPE(cmd)) {
case 'v':
printk(KERN_DEBUG "%s: ioctl 0x%08x (v4l1, %s, VIDIOC%s)\n",
name, cmd, dir, (_IOC_NR(cmd) < V4L1_IOCTLS) ?
v4l1_ioctls[_IOC_NR(cmd)] : "???");
break;
case 'V':
printk(KERN_DEBUG "%s: ioctl 0x%08x (v4l2, %s, VIDIOC_%s)\n",
name, cmd, dir, (_IOC_NR(cmd) < V4L2_IOCTLS) ?
v4l2_ioctls[_IOC_NR(cmd)] : "???");
break;
default:
printk(KERN_DEBUG "%s: ioctl 0x%08x (???, %s, #%d)\n",
name, cmd, dir, _IOC_NR(cmd));
}
}
static void *rvmalloc(size_t size)
{
void *mem;
unsigned long adr;
size = PAGE_ALIGN(size);
mem = vmalloc_32((unsigned long)size);
if (!mem)
return NULL;
memset(mem, 0, size);
adr = (unsigned long)mem;
while (size > 0) {
SetPageReserved(vmalloc_to_page((void *)adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
return mem;
}
static void rvfree(void *mem, size_t size)
{
unsigned long adr;
if (!mem)
return;
size = PAGE_ALIGN(size);
adr = (unsigned long)mem;
while (size > 0) {
ClearPageReserved(vmalloc_to_page((void *)adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
vfree(mem);
}
/*
* em2820_request_buffers()
* allocate a number of buffers
*/
u32 em2820_request_buffers(struct em2820 *dev, u32 count)
{
const size_t imagesize = PAGE_ALIGN(dev->frame_size); /*needs to be page aligned cause the buffers can be mapped individually! */
void *buff = NULL;
u32 i;
em2820_coredbg("requested %i buffers with size %i", count, imagesize);
if (count > EM2820_NUM_FRAMES)
count = EM2820_NUM_FRAMES;
dev->num_frames = count;
while (dev->num_frames > 0) {
if ((buff = rvmalloc(dev->num_frames * imagesize)))
break;
dev->num_frames--;
}
for (i = 0; i < dev->num_frames; i++) {
dev->frame[i].bufmem = buff + i * imagesize;
dev->frame[i].buf.index = i;
dev->frame[i].buf.m.offset = i * imagesize;
dev->frame[i].buf.length = dev->frame_size;
dev->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
dev->frame[i].buf.sequence = 0;
dev->frame[i].buf.field = V4L2_FIELD_NONE;
dev->frame[i].buf.memory = V4L2_MEMORY_MMAP;
dev->frame[i].buf.flags = 0;
}
return dev->num_frames;
}
/*
* em2820_queue_unusedframes()
* add all frames that are not currently in use to the inbuffer queue
*/
void em2820_queue_unusedframes(struct em2820 *dev)
{
unsigned long lock_flags;
u32 i;
for (i = 0; i < dev->num_frames; i++)
if (dev->frame[i].state == F_UNUSED) {
dev->frame[i].state = F_QUEUED;
spin_lock_irqsave(&dev->queue_lock, lock_flags);
list_add_tail(&dev->frame[i].frame, &dev->inqueue);
spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
}
}
/*
* em2820_release_buffers()
* free frame buffers
*/
void em2820_release_buffers(struct em2820 *dev)
{
if (dev->num_frames) {
rvfree(dev->frame[0].bufmem,
dev->num_frames * PAGE_ALIGN(dev->frame[0].buf.length));
dev->num_frames = 0;
}
}
/*
* em2820_read_reg_req()
* reads data from the usb device specifying bRequest
*/
int em2820_read_reg_req_len(struct em2820 *dev, u8 req, u16 reg,
char *buf, int len)
{
int ret, byte;
em2820_regdbg("req=%02x, reg=%02x ", req, reg);
ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0000, reg, buf, len, HZ);
if (reg_debug){
printk(ret < 0 ? " failed!\n" : "%02x values: ", ret);
for (byte = 0; byte < len; byte++) {
printk(" %02x", buf[byte]);
}
printk("\n");
}
return ret;
}
/*
* em2820_read_reg_req()
* reads data from the usb device specifying bRequest
*/
int em2820_read_reg_req(struct em2820 *dev, u8 req, u16 reg)
{
u8 val;
int ret;
em2820_regdbg("req=%02x, reg=%02x:", req, reg);
ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0000, reg, &val, 1, HZ);
if (reg_debug)
printk(ret < 0 ? " failed!\n" : "%02x\n", val);
if (ret < 0)
return ret;
return val;
}
int em2820_read_reg(struct em2820 *dev, u16 reg)
{
return em2820_read_reg_req(dev, USB_REQ_GET_STATUS, reg);
}
/*
* em2820_write_regs_req()
* sends data to the usb device, specifying bRequest
*/
int em2820_write_regs_req(struct em2820 *dev, u8 req, u16 reg, char *buf,
int len)
{
int ret;
/*usb_control_msg seems to expect a kmalloced buffer */
unsigned char *bufs = kmalloc(len, GFP_KERNEL);
em2820_regdbg("req=%02x reg=%02x:", req, reg);
if (reg_debug) {
int i;
for (i = 0; i < len; ++i)
printk (" %02x", (unsigned char)buf[i]);
printk ("\n");
}
if (!bufs)
return -ENOMEM;
memcpy(bufs, buf, len);
ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), req,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0x0000, reg, bufs, len, HZ);
mdelay(5); /* FIXME: magic number */
kfree(bufs);
return ret;
}
int em2820_write_regs(struct em2820 *dev, u16 reg, char *buf, int len)
{
return em2820_write_regs_req(dev, USB_REQ_GET_STATUS, reg, buf, len);
}
/*
* em2820_write_reg_bits()
* sets only some bits (specified by bitmask) of a register, by first reading
* the actual value
*/
int em2820_write_reg_bits(struct em2820 *dev, u16 reg, u8 val,
u8 bitmask)
{
int oldval;
u8 newval;
if ((oldval = em2820_read_reg(dev, reg)) < 0)
return oldval;
newval = (((u8) oldval) & ~bitmask) | (val & bitmask);
return em2820_write_regs(dev, reg, &newval, 1);
}
/*
* em2820_write_ac97()
* write a 16 bit value to the specified AC97 address (LSB first!)
*/
int em2820_write_ac97(struct em2820 *dev, u8 reg, u8 * val)
{
int ret;
u8 addr = reg & 0x7f;
if ((ret = em2820_write_regs(dev, AC97LSB_REG, val, 2)) < 0)
return ret;
if ((ret = em2820_write_regs(dev, AC97ADDR_REG, &addr, 1)) < 0)
return ret;
if ((ret = em2820_read_reg(dev, AC97BUSY_REG)) < 0)
return ret;
else if (((u8) ret) & 0x01) {
em2820_warn ("AC97 command still being exectuted: not handled properly!\n");
}
return 0;
}
int em2820_audio_analog_set(struct em2820 *dev)
{
char s[2] = { 0x00, 0x00 };
s[0] |= 0x1f - dev->volume;
s[1] |= 0x1f - dev->volume;
if (dev->mute)
s[1] |= 0x80;
return em2820_write_ac97(dev, MASTER_AC97, s);
}
int em2820_colorlevels_set_default(struct em2820 *dev)
{
em2820_write_regs(dev, YGAIN_REG, "\x10", 1); /* contrast */
em2820_write_regs(dev, YOFFSET_REG, "\x00", 1); /* brightness */
em2820_write_regs(dev, UVGAIN_REG, "\x10", 1); /* saturation */
em2820_write_regs(dev, UOFFSET_REG, "\x00", 1);
em2820_write_regs(dev, VOFFSET_REG, "\x00", 1);
em2820_write_regs(dev, SHARPNESS_REG, "\x00", 1);
em2820_write_regs(dev, GAMMA_REG, "\x20", 1);
em2820_write_regs(dev, RGAIN_REG, "\x20", 1);
em2820_write_regs(dev, GGAIN_REG, "\x20", 1);
em2820_write_regs(dev, BGAIN_REG, "\x20", 1);
em2820_write_regs(dev, ROFFSET_REG, "\x00", 1);
em2820_write_regs(dev, GOFFSET_REG, "\x00", 1);
return em2820_write_regs(dev, BOFFSET_REG, "\x00", 1);
}
int em2820_capture_start(struct em2820 *dev, int start)
{
int ret;
/* FIXME: which is the best order? */
/* video registers are sampled by VREF */
if ((ret = em2820_write_reg_bits(dev, USBSUSP_REG, start ? 0x10 : 0x00,
0x10)) < 0)
return ret;
/* enable video capture */
return em2820_write_regs(dev, VINENABLE_REG, start ? "\x67" : "\x27", 1);
}
int em2820_outfmt_set_yuv422(struct em2820 *dev)
{
em2820_write_regs(dev, OUTFMT_REG, "\x34", 1);
em2820_write_regs(dev, VINMODE_REG, "\x10", 1);
return em2820_write_regs(dev, VINCTRL_REG, "\x11", 1);
}
int em2820_accumulator_set(struct em2820 *dev, u8 xmin, u8 xmax, u8 ymin,
u8 ymax)
{
em2820_coredbg("em2820 Scale: (%d,%d)-(%d,%d)\n", xmin, ymin, xmax, ymax);
em2820_write_regs(dev, XMIN_REG, &xmin, 1);
em2820_write_regs(dev, XMAX_REG, &xmax, 1);
em2820_write_regs(dev, YMIN_REG, &ymin, 1);
return em2820_write_regs(dev, YMAX_REG, &ymax, 1);
}
int em2820_capture_area_set(struct em2820 *dev, u8 hstart, u8 vstart,
u16 width, u16 height)
{
u8 cwidth = width;
u8 cheight = height;
u8 overflow = (height >> 7 & 0x02) | (width >> 8 & 0x01);
em2820_coredbg("em2820 Area Set: (%d,%d)\n", (width | (overflow & 2) << 7),
(height | (overflow & 1) << 8));
em2820_write_regs(dev, HSTART_REG, &hstart, 1);
em2820_write_regs(dev, VSTART_REG, &vstart, 1);
em2820_write_regs(dev, CWIDTH_REG, &cwidth, 1);
em2820_write_regs(dev, CHEIGHT_REG, &cheight, 1);
return em2820_write_regs(dev, OFLOW_REG, &overflow, 1);
}
int em2820_scaler_set(struct em2820 *dev, u16 h, u16 v)
{
u8 buf[2];
buf[0] = h;
buf[1] = h >> 8;
em2820_write_regs(dev, HSCALELOW_REG, (char *)buf, 2);
buf[0] = v;
buf[1] = v >> 8;
em2820_write_regs(dev, VSCALELOW_REG, (char *)buf, 2);
/* when H and V mixershould be used? */
/* return em2820_write_reg_bits(dev, COMPR_REG, (h ? 0x20 : 0x00) | (v ? 0x10 : 0x00), 0x30); */
/* it seems that both H and V scalers must be active to work correctly */
return em2820_write_reg_bits(dev, COMPR_REG, h
|| v ? 0x30 : 0x00, 0x30);
}
/* FIXME: this only function read values from dev */
int em2820_resolution_set(struct em2820 *dev)
{
int width, height;
width = norm_maxw(dev);
height = norm_maxh(dev) >> 1;
em2820_outfmt_set_yuv422(dev);
em2820_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2);
em2820_capture_area_set(dev, 0, 0, width >> 2, height >> 2);
return em2820_scaler_set(dev, dev->hscale, dev->vscale);
}
/******************* isoc transfer handling ****************************/
#ifdef ENABLE_DEBUG_ISOC_FRAMES
static void em2820_isoc_dump(struct urb *urb, struct pt_regs *regs)
{
int len = 0;
int ntrans = 0;
int i;
printk(KERN_DEBUG "isocIrq: sf=%d np=%d ec=%x\n",
urb->start_frame, urb->number_of_packets,
urb->error_count);
for (i = 0; i < urb->number_of_packets; i++) {
unsigned char *buf =
urb->transfer_buffer +
urb->iso_frame_desc[i].offset;
int alen = urb->iso_frame_desc[i].actual_length;
if (alen > 0) {
if (buf[0] == 0x88) {
ntrans++;
len += alen;
} else if (buf[0] == 0x22) {
printk(KERN_DEBUG
"= l=%d nt=%d bpp=%d\n",
len - 4 * ntrans, ntrans,
ntrans == 0 ? 0 : len / ntrans);
ntrans = 1;
len = alen;
} else
printk(KERN_DEBUG "!\n");
}
printk(KERN_DEBUG " n=%d s=%d al=%d %x\n", i,
urb->iso_frame_desc[i].status,
urb->iso_frame_desc[i].actual_length,
(unsigned int)
*((unsigned char *)(urb->transfer_buffer +
urb->iso_frame_desc[i].
offset)));
}
}
#endif
static inline int em2820_isoc_video(struct em2820 *dev,struct em2820_frame_t **f,
unsigned long *lock_flags, unsigned char buf)
{
if (!(buf & 0x01)) {
if ((*f)->state == F_GRABBING) {
/*previous frame is incomplete */
if ((*f)->fieldbytesused < dev->field_size) {
(*f)->state = F_ERROR;
em2820_isocdbg ("dropping incomplete bottom field (%i missing bytes)",
dev->field_size-(*f)->fieldbytesused);
} else {
(*f)->state = F_DONE;
(*f)->buf.bytesused = dev->frame_size;
}
}
if ((*f)->state == F_DONE || (*f)->state == F_ERROR) {
/* move current frame to outqueue and get next free buffer from inqueue */
spin_lock_irqsave(&dev-> queue_lock, *lock_flags);
list_move_tail(&(*f)->frame, &dev->outqueue);
if (!list_empty(&dev->inqueue))
(*f) = list_entry(dev-> inqueue.next,
struct em2820_frame_t,frame);
else
(*f) = NULL;
spin_unlock_irqrestore(&dev->queue_lock,*lock_flags);
}
if (!(*f)) {
em2820_isocdbg ("new frame but no buffer is free");
return -1;
}
do_gettimeofday(&(*f)->buf.timestamp);
(*f)->buf.sequence = ++dev->frame_count;
(*f)->buf.field = V4L2_FIELD_INTERLACED;
(*f)->state = F_GRABBING;
(*f)->buf.bytesused = 0;
(*f)->top_field = 1;
(*f)->fieldbytesused = 0;
} else {
/* acquiring bottom field */
if ((*f)->state == F_GRABBING) {
if (!(*f)->top_field) {
(*f)->state = F_ERROR;
em2820_isocdbg ("unexpected begin of bottom field; discarding it");
} else if ((*f)-> fieldbytesused < dev->field_size - 172) {
(*f)->state = F_ERROR;
em2820_isocdbg ("dropping incomplete top field (%i missing bytes)",
dev->field_size-(*f)->fieldbytesused);
} else {
(*f)->top_field = 0;
(*f)->fieldbytesused = 0;
}
}
}
return (0);
}
static inline void em2820_isoc_video_copy(struct em2820 *dev,
struct em2820_frame_t **f, unsigned char *buf, int len)
{
void *fieldstart, *startwrite, *startread;
int linesdone, currlinedone, offset, lencopy,remain;
if ((*f)->fieldbytesused + len > dev->field_size)
len =dev->field_size - (*f)->fieldbytesused;
remain = len;
startread = buf + 4;
if ((*f)->top_field)
fieldstart = (*f)->bufmem;
else
fieldstart = (*f)->bufmem + dev->bytesperline;
linesdone = (*f)->fieldbytesused / dev->bytesperline;
currlinedone = (*f)->fieldbytesused % dev->bytesperline;
offset = linesdone * dev->bytesperline * 2 + currlinedone;
startwrite = fieldstart + offset;
lencopy = dev->bytesperline - currlinedone;
lencopy = lencopy > remain ? remain : lencopy;
memcpy(startwrite, startread, lencopy);
remain -= lencopy;
while (remain > 0) {
startwrite += lencopy + dev->bytesperline;
startread += lencopy;
if (dev->bytesperline > remain)
lencopy = remain;
else
lencopy = dev->bytesperline;
memcpy(startwrite, startread, lencopy);
remain -= lencopy;
}
(*f)->fieldbytesused += len;
}
/*
* em2820_isoIrq()
* handles the incoming isoc urbs and fills the frames from our inqueue
*/
void em2820_isocIrq(struct urb *urb, struct pt_regs *regs)
{
struct em2820 *dev = urb->context;
int i, status;
struct em2820_frame_t **f;
unsigned long lock_flags;
if (!dev)
return;
#ifdef ENABLE_DEBUG_ISOC_FRAMES
if (isoc_debug>1)
em2820_isoc_dump(urb, regs);
#endif
if (urb->status == -ENOENT)
return;
f = &dev->frame_current;
if (dev->stream == STREAM_INTERRUPT) {
dev->stream = STREAM_OFF;
if ((*f))
(*f)->state = F_QUEUED;
em2820_isocdbg("stream interrupted");
wake_up_interruptible(&dev->wait_stream);
}
if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
return;
if (dev->stream == STREAM_ON && !list_empty(&dev->inqueue)) {
if (!(*f))
(*f) = list_entry(dev->inqueue.next,
struct em2820_frame_t, frame);
for (i = 0; i < urb->number_of_packets; i++) {
unsigned char *buf = urb->transfer_buffer +
urb->iso_frame_desc[i].offset;
int len = urb->iso_frame_desc[i].actual_length - 4;
if (urb->iso_frame_desc[i].status) {
em2820_isocdbg("data error: [%d] len=%d, status=%d", i,
urb->iso_frame_desc[i].actual_length,
urb->iso_frame_desc[i].status);
continue;
}
if (urb->iso_frame_desc[i].actual_length <= 0) {
em2820_isocdbg("packet %d is empty",i);
continue;
}
if (urb->iso_frame_desc[i].actual_length >
dev->max_pkt_size) {
em2820_isocdbg("packet bigger than packet size");
continue;
}
/*new frame */
if (buf[0] == 0x22 && buf[1] == 0x5a) {
em2820_isocdbg("Video frame, length=%i!",len);
if (em2820_isoc_video(dev,f,&lock_flags,buf[2]))
break;
} else if (buf[0]==0x33 && buf[1]==0x95 && buf[2]==0x00) {
em2820_isocdbg("VBI HEADER!!!");
}
/* actual copying */
if ((*f)->state == F_GRABBING) {
em2820_isoc_video_copy(dev,f,buf, len);
}
}
}
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;
if ((status = usb_submit_urb(urb, GFP_ATOMIC))) {
em2820_errdev("resubmit of urb failed (error=%i)\n", status);
dev->state |= DEV_MISCONFIGURED;
}
wake_up_interruptible(&dev->wait_frame);
return;
}
/*
* em2820_uninit_isoc()
* deallocates the buffers and urbs allocated during em2820_init_iosc()
*/
void em2820_uninit_isoc(struct em2820 *dev)
{
int i;
for (i = 0; i < EM2820_NUM_BUFS; i++) {
if (dev->urb[i]) {
usb_kill_urb(dev->urb[i]);
usb_free_urb(dev->urb[i]);
}
dev->urb[i] = NULL;
if (dev->transfer_buffer[i])
kfree(dev->transfer_buffer[i]);
dev->transfer_buffer[i] = NULL;
}
em2820_capture_start(dev, 0);
}
/*
* em2820_init_isoc()
* allocates transfer buffers and submits the urbs for isoc transfer
*/
int em2820_init_isoc(struct em2820 *dev)
{
/* change interface to 3 which allowes the biggest packet sizes */
int i, errCode;
const int sb_size = EM2820_NUM_PACKETS * dev->max_pkt_size;
/* reset streaming vars */
dev->frame_current = NULL;
dev->frame_count = 0;
/* allocate urbs */
for (i = 0; i < EM2820_NUM_BUFS; i++) {
struct urb *urb;
int j, k;
/* allocate transfer buffer */
dev->transfer_buffer[i] = kmalloc(sb_size, GFP_KERNEL);
if (!dev->transfer_buffer[i]) {
em2820_errdev
("unable to allocate %i bytes for transfer buffer %i\n",
sb_size, i);
em2820_uninit_isoc(dev);
return -ENOMEM;
}
memset(dev->transfer_buffer[i], 0, sb_size);
urb = usb_alloc_urb(EM2820_NUM_PACKETS, GFP_KERNEL);
if (urb) {
urb->dev = dev->udev;
urb->context = dev;
urb->pipe = usb_rcvisocpipe(dev->udev, 0x82);
urb->transfer_flags = URB_ISO_ASAP;
urb->interval = 1;
urb->transfer_buffer = dev->transfer_buffer[i];
urb->complete = em2820_isocIrq;
urb->number_of_packets = EM2820_NUM_PACKETS;
urb->transfer_buffer_length = sb_size;
for (j = k = 0; j < EM2820_NUM_PACKETS;
j++, k += dev->max_pkt_size) {
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length =
dev->max_pkt_size;
}
dev->urb[i] = urb;
} else {
em2820_errdev("cannot alloc urb %i\n", i);
em2820_uninit_isoc(dev);
return -ENOMEM;
}
}
/* submit urbs */
for (i = 0; i < EM2820_NUM_BUFS; i++) {
errCode = usb_submit_urb(dev->urb[i], GFP_KERNEL);
if (errCode) {
em2820_errdev("submit of urb %i failed (error=%i)\n", i,
errCode);
em2820_uninit_isoc(dev);
return errCode;
}
}
return 0;
}
int em2820_set_alternate(struct em2820 *dev)
{
int errCode, prev_alt = dev->alt;
dev->alt = alt;
if (dev->alt == 0) {
int i;
unsigned int min_pkt_size = dev->field_size / 137; /* FIXME: empiric magic number */
em2820_coredbg("minimum isoc packet size: %u", min_pkt_size);
dev->alt = 7;
for (i = 1; i < EM2820_MAX_ALT; i += 2) /* FIXME: skip even alternate: why do they not work? */
if (dev->alt_max_pkt_size[i] >= min_pkt_size) {
dev->alt = i;
break;
}
}
if (dev->alt != prev_alt) {
dev->max_pkt_size = dev->alt_max_pkt_size[dev->alt];
em2820_coredbg("setting alternate %d with wMaxPacketSize=%u", dev->alt,
dev->max_pkt_size);
errCode = usb_set_interface(dev->udev, 0, dev->alt);
if (errCode < 0) {
em2820_errdev
("cannot change alternate number to %d (error=%i)\n",
dev->alt, errCode);
return errCode;
}
}
return 0;
}
drivers/media/video/em28xx/em28xx-i2c.c 0 → 100644
View file @ a6c2ba28
/*
em2820-i2c.c - driver for Empia EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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/module.h>
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <media/tuner.h>
#include <linux/video_decoder.h>
/* To be moved to compat.h */
#if !defined(I2C_HW_B_EM2820)
#define I2C_HW_B_EM2820 I2C_HW_B_BT848
#endif
#include "em2820.h"
/* ----------------------------------------------------------- */
static unsigned int i2c_scan = 0;
module_param(i2c_scan, int, 0444);
MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
static unsigned int i2c_debug = 0;
module_param(i2c_debug, int, 0644);
MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
#define dprintk(fmt, args...) if (i2c_debug) do {\
printk(KERN_DEBUG "%s: %s: " fmt "\n",\
dev->name, __FUNCTION__ , ##args); } while (0)
#define dprintk1(fmt, args...) if (i2c_debug) do{ \
printk(KERN_DEBUG "%s: %s: " fmt, \
dev->name, __FUNCTION__ , ##args); } while (0)
#define dprintk2(fmt, args...) if (i2c_debug) do {\
printk(fmt , ##args); } while (0)
/*
* i2c_send_bytes()
* untested for more than 4 bytes
*/
static int i2c_send_bytes(void *data, unsigned char addr, char *buf, short len,
int stop)
{
int wrcount = 0;
struct em2820 *dev = (struct em2820 *)data;
wrcount = dev->em2820_write_regs_req(dev, stop ? 2 : 3, addr, buf, len);
return wrcount;
}
/*
* i2c_recv_byte()
* read a byte from the i2c device
*/
static int i2c_recv_bytes(struct em2820 *dev, unsigned char addr, char *buf,
int len)
{
int ret;
ret = dev->em2820_read_reg_req_len(dev, 2, addr, buf, len);
if (ret < 0) {
em2820_warn("reading i2c device failed (error=%i)\n", ret);
return ret;
}
if (dev->em2820_read_reg(dev, 0x5) != 0)
return -ENODEV;
return ret;
}
/*
* i2c_check_for_device()
* check if there is a i2c_device at the supplied address
*/
static int i2c_check_for_device(struct em2820 *dev, unsigned char addr)
{
char msg;
int ret;
msg = addr;
ret = dev->em2820_read_reg_req(dev, 2, addr);
if (ret < 0) {
em2820_warn("reading from i2c device failed (error=%i)\n", ret);
return ret;
}
if (dev->em2820_read_reg(dev, 0x5) != 0)
return -ENODEV;
return 0;
}
/*
* em2820_i2c_xfer()
* the main i2c transfer function
*/
static int em2820_i2c_xfer(struct i2c_adapter *i2c_adap,
struct i2c_msg msgs[], int num)
{
struct em2820 *dev = i2c_adap->algo_data;
int addr, rc, i, byte;
if (num <= 0)
return 0;
for (i = 0; i < num; i++) {
addr = msgs[i].addr << 1;
dprintk1("%s %s addr=%x len=%d:",
(msgs[i].flags & I2C_M_RD) ? "read" : "write",
i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
if (!msgs[i].len) { /* no len: check only for device presence */
rc = i2c_check_for_device(dev, addr);
if (rc < 0) {
dprintk2(" no device\n");
return rc;
}
}
if (msgs[i].flags & I2C_M_RD) {
/* read bytes */
rc = i2c_recv_bytes(dev, addr, msgs[i].buf,
msgs[i].len);
if (i2c_debug) {
for (byte = 0; byte < msgs[i].len; byte++) {
printk(" %02x", msgs[i].buf[byte]);
}
}
} else {
/* write bytes */
if (i2c_debug) {
for (byte = 0; byte < msgs[i].len; byte++)
printk(" %02x", msgs[i].buf[byte]);
}
rc = i2c_send_bytes(dev, addr, msgs[i].buf, msgs[i].len,
i == num - 1);
if (rc < 0)
goto err;
}
if (i2c_debug)
printk("\n");
}
return num;
err:
dprintk2(" ERROR: %i\n", rc);
return rc;
}
static int em2820_i2c_eeprom(struct em2820 *dev, unsigned char *eedata, int len)
{
unsigned char buf, *p = eedata;
struct em2820_eeprom *em_eeprom = (void *)eedata;
int i, err, size = len, block;
dev->i2c_client.addr = 0xa0 >> 1;
buf = 0;
if (1 != (err = i2c_master_send(&dev->i2c_client, &buf, 1))) {
printk(KERN_INFO "%s: Huh, no eeprom present (err=%d)?\n",
dev->name, err);
return -1;
}
while (size > 0) {
if (size > 16)
block = 16;
else
block = size;
if (block !=
(err = i2c_master_recv(&dev->i2c_client, p, block))) {
printk(KERN_WARNING
"%s: i2c eeprom read error (err=%d)\n",
dev->name, err);
return -1;
}
size -= block;
p += block;
}
for (i = 0; i < len; i++) {
if (0 == (i % 16))
printk(KERN_INFO "%s: i2c eeprom %02x:", dev->name, i);
printk(" %02x", eedata[i]);
if (15 == (i % 16))
printk("\n");
}
printk(KERN_INFO "EEPROM ID= 0x%08x\n", em_eeprom->id);
printk(KERN_INFO "Vendor/Product ID= %04x:%04x\n", em_eeprom->vendor_ID,
em_eeprom->product_ID);
switch (em_eeprom->chip_conf >> 4 & 0x3) {
case 0:
printk(KERN_INFO "No audio on board.\n");
break;
case 1:
printk(KERN_INFO "AC97 audio (5 sample rates)\n");
break;
case 2:
printk(KERN_INFO "I2S audio, sample rate=32k\n");
break;
case 3:
printk(KERN_INFO "I2S audio, 3 sample rates\n");
break;
}
if (em_eeprom->chip_conf & 1 << 3)
printk(KERN_INFO "USB Remote wakeup capable\n");
if (em_eeprom->chip_conf & 1 << 2)
printk(KERN_INFO "USB Self power capable\n");
switch (em_eeprom->chip_conf & 0x3) {
case 0:
printk(KERN_INFO "500mA max power\n");
break;
case 1:
printk(KERN_INFO "400mA max power\n");
break;
case 2:
printk(KERN_INFO "300mA max power\n");
break;
case 3:
printk(KERN_INFO "200mA max power\n");
break;
}
return 0;
}
/* ----------------------------------------------------------- */
/*
* algo_control()
*/
static int algo_control(struct i2c_adapter *adapter,
unsigned int cmd, unsigned long arg)
{
return 0;
}
/*
* functionality()
*/
static u32 functionality(struct i2c_adapter *adap)
{
return I2C_FUNC_SMBUS_EMUL;
}
#ifndef I2C_PEC
static void inc_use(struct i2c_adapter *adap)
{
MOD_INC_USE_COUNT;
}
static void dec_use(struct i2c_adapter *adap)
{
MOD_DEC_USE_COUNT;
}
#endif
static int em2820_set_tuner(int check_eeprom, struct i2c_client *client)
{
struct em2820 *dev = client->adapter->algo_data;
struct tuner_setup tun_setup;
/* tuner */
if (dev->has_tuner) {
tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
tun_setup.type = dev->tuner_type;
tun_setup.addr = dev->tuner_addr;
em2820_i2c_call_clients(dev, TUNER_SET_TYPE_ADDR, &tun_setup);
}
return (0);
}
/*
* attach_inform()
* gets called when a device attaches to the i2c bus
* does some basic configuration
*/
static int attach_inform(struct i2c_client *client)
{
struct em2820 *dev = client->adapter->algo_data;
dprintk("address %x", client->addr << 1);
switch (client->addr << 1) {
case 0x68:
em2820_i2c_call_clients(dev, TDA9887_SET_CONFIG, &dev->tda9887_conf);
break;
case 0x4a:
dprintk1("attach_inform: saa7113 detected.\n");
break;
case 0xa0:
dprintk1("attach_inform: eeprom detected.\n");
break;
case 0x80:
case 0x88:
dprintk1("attach_inform: msp34xx detected.\n");
break;
case 0xb8:
case 0xba:
dprintk1("attach_inform: tvp5150 detected.\n");
break;
default:
dev->tuner_addr = client->addr;
em2820_set_tuner(-1, client);
}
return 0;
}
static struct i2c_algorithm em2820_algo = {
.name = "em2820",
.id = I2C_HW_B_EM2820,
.master_xfer = em2820_i2c_xfer,
.algo_control = algo_control,
.functionality = functionality,
};
static struct i2c_adapter em2820_adap_template = {
#ifdef I2C_PEC
.owner = THIS_MODULE,
#else
.inc_use = inc_use,
.dec_use = dec_use,
#endif
#ifdef I2C_CLASS_TV_ANALOG
.class = I2C_CLASS_TV_ANALOG,
#endif
.name = "em2820",
.id = I2C_HW_B_EM2820,
.algo = &em2820_algo,
.client_register = attach_inform,
};
static struct i2c_client em2820_client_template = {
.name = "em2820 internal",
.flags = I2C_CLIENT_ALLOW_USE,
};
/* ----------------------------------------------------------- */
/*
* i2c_devs
* incomplete list of known devices
*/
static char *i2c_devs[128] = {
[0x4a >> 1] = "saa7113h",
[0x60 >> 1] = "remote IR sensor",
[0x86 >> 1] = "tda9887",
[0x80 >> 1] = "msp34xx",
[0x88 >> 1] = "msp34xx",
[0xa0 >> 1] = "eeprom",
[0xb8 >> 1] = "tvp5150a",
[0xba >> 1] = "tvp5150a",
[0xc0 >> 1] = "tuner (analog)",
[0xc2 >> 1] = "tuner (analog)",
[0xc4 >> 1] = "tuner (analog)",
[0xc6 >> 1] = "tuner (analog)",
};
/*
* do_i2c_scan()
* check i2c address range for devices
*/
static void do_i2c_scan(char *name, struct i2c_client *c)
{
unsigned char buf;
int i, rc;
for (i = 0; i < 128; i++) {
c->addr = i;
rc = i2c_master_recv(c, &buf, 0);
if (rc < 0)
continue;
printk(KERN_INFO "%s: found device @ 0x%x [%s]", name,
i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
}
}
/*
* em2820_i2c_call_clients()
* send commands to all attached i2c devices
*/
void em2820_i2c_call_clients(struct em2820 *dev, unsigned int cmd, void *arg)
{
BUG_ON(NULL == dev->i2c_adap.algo_data);
i2c_clients_command(&dev->i2c_adap, cmd, arg);
}
/*
* em2820_i2c_register()
* register i2c bus
*/
int em2820_i2c_register(struct em2820 *dev)
{
BUG_ON(!dev->em2820_write_regs || !dev->em2820_read_reg);
BUG_ON(!dev->em2820_write_regs_req || !dev->em2820_read_reg_req);
dev->i2c_adap = em2820_adap_template;
dev->i2c_adap.dev.parent = &dev->udev->dev;
strcpy(dev->i2c_adap.name, dev->name);
dev->i2c_adap.algo_data = dev;
i2c_add_adapter(&dev->i2c_adap);
dev->i2c_client = em2820_client_template;
dev->i2c_client.adapter = &dev->i2c_adap;
em2820_i2c_eeprom(dev, dev->eedata, sizeof(dev->eedata));
if (i2c_scan)
do_i2c_scan(dev->name, &dev->i2c_client);
return 0;
}
/*
* em2820_i2c_unregister()
* unregister i2c_bus
*/
int em2820_i2c_unregister(struct em2820 *dev)
{
i2c_del_adapter(&dev->i2c_adap);
return 0;
}
drivers/media/video/em28xx/em28xx-video.c 0 → 100644
View file @ a6c2ba28
/*
em2820-video.c - driver for Empia EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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/kernel.h>
#include <linux/usb.h>
#include <linux/videodev.h>
#include <linux/i2c.h>
#include <media/tuner.h>
#include <linux/video_decoder.h>
#include "em2820.h"
#define DRIVER_AUTHOR "Markus Rechberger <mrechberger@gmail.com>, " \
"Ludovico Cavedon <cavedon@sssup.it>, " \
"Mauro Carvalho Chehab <mchehab@brturbo.com.br>"
#define DRIVER_NAME "em2820"
#define DRIVER_DESC "Empia em2820 based USB video device driver"
#define EM2820_VERSION_CODE KERNEL_VERSION(0, 0, 1)
#define em2820_videodbg(fmt, arg...) do {\
if (video_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __FUNCTION__ , ##arg); } while (0)
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
static int tuner = -1;
module_param(tuner, int, 0444);
MODULE_PARM_DESC(tuner, "tuner type");
static unsigned int video_debug = 0;
module_param(video_debug,int,0644);
MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
/* supported tv norms */
static struct em2820_tvnorm tvnorms[] = {
{
.name = "PAL",
.id = V4L2_STD_PAL,
.mode = VIDEO_MODE_PAL,
}, {
.name = "NTSC",
.id = V4L2_STD_NTSC,
.mode = VIDEO_MODE_NTSC,
}, {
.name = "SECAM",
.id = V4L2_STD_SECAM,
.mode = VIDEO_MODE_SECAM,
}, {
.name = "PAL-M",
.id = V4L2_STD_PAL_M,
.mode = VIDEO_MODE_PAL,
}
};
#define TVNORMS ARRAY_SIZE(tvnorms)
/* supported controls */
static struct v4l2_queryctrl em2820_qctrl[] = {
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = -128,
.maximum = 127,
.step = 1,
.default_value = 0,
.flags = 0,
},{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0x0,
.maximum = 0x1f,
.step = 0x1,
.default_value = 0x10,
.flags = 0,
},{
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Saturation",
.minimum = 0x0,
.maximum = 0x1f,
.step = 0x1,
.default_value = 0x10,
.flags = 0,
},{
.id = V4L2_CID_AUDIO_VOLUME,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Volume",
.minimum = 0x0,
.maximum = 0x1f,
.step = 0x1,
.default_value = 0x1f,
.flags = 0,
},{
.id = V4L2_CID_AUDIO_MUTE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mute",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 1,
.flags = 0,
},{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Red chroma balance",
.minimum = -128,
.maximum = 127,
.step = 1,
.default_value = 0,
.flags = 0,
},{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Blue chroma balance",
.minimum = -128,
.maximum = 127,
.step = 1,
.default_value = 0,
.flags = 0,
},{
.id = V4L2_CID_GAMMA,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gamma",
.minimum = 0x0,
.maximum = 0x3f,
.step = 0x1,
.default_value = 0x20,
.flags = 0,
}
};
static struct usb_driver em2820_usb_driver;
static DECLARE_MUTEX(em2820_sysfs_lock);
static DECLARE_RWSEM(em2820_disconnect);
/********************* v4l2 interface ******************************************/
static inline unsigned long kvirt_to_pa(unsigned long adr)
{
unsigned long kva, ret;
kva = (unsigned long)page_address(vmalloc_to_page((void *)adr));
kva |= adr & (PAGE_SIZE - 1);
ret = __pa(kva);
return ret;
}
/*
* em2820_config()
* inits registers with sane defaults
*/
static int em2820_config(struct em2820 *dev)
{
/* Sets I2C speed to 100 KHz */
em2820_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
/* enable vbi capturing */
em2820_audio_usb_mute(dev, 1);
dev->mute = 1; /* maybe not the right place... */
dev->volume = 0x1f;
em2820_audio_analog_set(dev);
em2820_audio_analog_setup(dev);
em2820_outfmt_set_yuv422(dev);
em2820_colorlevels_set_default(dev);
em2820_compression_disable(dev);
return 0;
}
/*
* em2820_config_i2c()
* configure i2c attached devices
*/
void em2820_config_i2c(struct em2820 *dev)
{
struct v4l2_frequency f;
struct video_decoder_init em2820_vdi = {.data = NULL };
/* configure decoder */
em2820_i2c_call_clients(dev, DECODER_INIT, &em2820_vdi);
em2820_i2c_call_clients(dev, DECODER_SET_INPUT, &dev->ctl_input);
/* em2820_i2c_call_clients(dev,DECODER_SET_PICTURE, &dev->vpic); */
/* em2820_i2c_call_clients(dev,DECODER_SET_NORM,&dev->tvnorm->id); */
/* em2820_i2c_call_clients(dev,DECODER_ENABLE_OUTPUT,&output); */
/* em2820_i2c_call_clients(dev,DECODER_DUMP, NULL); */
/* configure tuner */
f.tuner = 0;
f.type = V4L2_TUNER_ANALOG_TV;
f.frequency = 9076; /* FIXME:remove magic number */
dev->ctl_freq = f.frequency;
em2820_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
/* configure tda9887 */
em2820_i2c_call_clients(dev, TDA9887_SET_CONFIG, &dev->tda9887_conf);
/* em2820_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */
}
/*
* em2820_empty_framequeues()
* prepare queues for incoming and outgoing frames
*/
static void em2820_empty_framequeues(struct em2820 *dev)
{
u32 i;
INIT_LIST_HEAD(&dev->inqueue);
INIT_LIST_HEAD(&dev->outqueue);
for (i = 0; i < EM2820_NUM_FRAMES; i++) {
dev->frame[i].state = F_UNUSED;
dev->frame[i].buf.bytesused = 0;
}
}
/*
* em2820_v4l2_open()
* inits the device and starts isoc transfer
*/
static int em2820_v4l2_open(struct inode *inode, struct file *filp)
{
struct video_device *vdev = video_devdata(filp);
int minor = iminor(inode);
struct em2820 *dev = (struct em2820 *)video_get_drvdata(vdev);
int errCode = 0;
em2820_videodbg("users=%d", dev->users);
if (!down_read_trylock(&em2820_disconnect))
return -ERESTARTSYS;
if (dev->users) {
em2820_warn("this driver can be opened only once\n");
up_read(&em2820_disconnect);
return -EBUSY;
}
/* if(dev->vbi_dev->minor == minor){
dev->type=V4L2_BUF_TYPE_VBI_CAPTURE;
}*/
if (dev->vdev->minor == minor) {
dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
init_MUTEX(&dev->fileop_lock); /* to 1 == available */
spin_lock_init(&dev->queue_lock);
init_waitqueue_head(&dev->wait_frame);
init_waitqueue_head(&dev->wait_stream);
down(&dev->lock);
em2820_set_alternate(dev);
dev->width = norm_maxw(dev);
dev->height = norm_maxh(dev);
dev->frame_size = dev->width * dev->height * 2;
dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
dev->bytesperline = dev->width * 2;
dev->hscale = 0;
dev->vscale = 0;
em2820_capture_start(dev, 1);
em2820_resolution_set(dev);
/* start the transfer */
errCode = em2820_init_isoc(dev);
if (errCode)
goto err;
dev->users++;
filp->private_data = dev;
dev->io = IO_NONE;
dev->stream = STREAM_OFF;
dev->num_frames = 0;
/* prepare queues */
em2820_empty_framequeues(dev);
dev->state |= DEV_INITIALIZED;
err:
up(&dev->lock);
up_read(&em2820_disconnect);
return errCode;
}
/*
* em2820_realease_resources()
* unregisters the v4l2,i2c and usb devices
* called when the device gets disconected or at module unload
*/
static void em2820_release_resources(struct em2820 *dev)
{
down(&em2820_sysfs_lock);
em2820_info("V4L2 device /dev/video%d deregistered\n",
dev->vdev->minor);
video_set_drvdata(dev->vdev, NULL);
video_unregister_device(dev->vdev);
/* video_unregister_device(dev->vbi_dev); */
em2820_i2c_unregister(dev);
usb_put_dev(dev->udev);
up(&em2820_sysfs_lock);
}
/*
* em2820_v4l2_close()
* stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
*/
static int em2820_v4l2_close(struct inode *inode, struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct em2820 *dev = (struct em2820 *)video_get_drvdata(vdev);
int errCode;
em2820_videodbg("users=%d", dev->users);
down(&dev->lock);
em2820_uninit_isoc(dev);
em2820_release_buffers(dev);
/* the device is already disconnect, free the remaining resources */
if (dev->state & DEV_DISCONNECTED) {
em2820_release_resources(dev);
up(&dev->lock);
kfree(dev);
return 0;
}
/* set alternate 0 */
dev->alt = 0;
em2820_videodbg("setting alternate 0");
errCode = usb_set_interface(dev->udev, 0, 0);
if (errCode < 0) {
em2820_errdev ("cannot change alternate number to 0 (error=%i)\n",
errCode);
}
dev->users--;
wake_up_interruptible_nr(&dev->open, 1);
up(&dev->lock);
return 0;
}
/*
* em2820_v4l2_read()
* will allocate buffers when called for the first time
*/
static ssize_t
em2820_v4l2_read(struct file *filp, char __user * buf, size_t count,
loff_t * f_pos)
{
struct em2820 *dev = video_get_drvdata(video_devdata(filp));
struct em2820_frame_t *f, *i;
unsigned long lock_flags;
int ret = 0;
if (down_interruptible(&dev->fileop_lock))
return -ERESTARTSYS;
if (dev->state & DEV_DISCONNECTED) {
em2820_videodbg("device not present");
up(&dev->fileop_lock);
return -ENODEV;
}
if (dev->state & DEV_MISCONFIGURED) {
em2820_videodbg("device misconfigured; close and open it again");
up(&dev->fileop_lock);
return -EIO;
}
if (dev->io == IO_MMAP) {
em2820_videodbg ("IO method is set to mmap; close and open"
" the device again to choose the read method");
up(&dev->fileop_lock);
return -EINVAL;
}
if (dev->io == IO_NONE) {
if (!em2820_request_buffers(dev, EM2820_NUM_READ_FRAMES)) {
em2820_errdev("read failed, not enough memory\n");
up(&dev->fileop_lock);
return -ENOMEM;
}
dev->io = IO_READ;
dev->stream = STREAM_ON;
em2820_queue_unusedframes(dev);
}
if (!count) {
up(&dev->fileop_lock);
return 0;
}
if (list_empty(&dev->outqueue)) {
if (filp->f_flags & O_NONBLOCK) {
up(&dev->fileop_lock);
return -EAGAIN;
}
ret = wait_event_interruptible
(dev->wait_frame,
(!list_empty(&dev->outqueue)) ||
(dev->state & DEV_DISCONNECTED));
if (ret) {
up(&dev->fileop_lock);
return ret;
}
if (dev->state & DEV_DISCONNECTED) {
up(&dev->fileop_lock);
return -ENODEV;
}
}
f = list_entry(dev->outqueue.prev, struct em2820_frame_t, frame);
spin_lock_irqsave(&dev->queue_lock, lock_flags);
list_for_each_entry(i, &dev->outqueue, frame)
i->state = F_UNUSED;
INIT_LIST_HEAD(&dev->outqueue);
spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
em2820_queue_unusedframes(dev);
if (count > f->buf.length)
count = f->buf.length;
if (copy_to_user(buf, f->bufmem, count)) {
up(&dev->fileop_lock);
return -EFAULT;
}
*f_pos += count;
up(&dev->fileop_lock);
return count;
}
/*
* em2820_v4l2_poll()
* will allocate buffers when called for the first time
*/
static unsigned int em2820_v4l2_poll(struct file *filp, poll_table * wait)
{
struct em2820 *dev = video_get_drvdata(video_devdata(filp));
unsigned int mask = 0;
if (down_interruptible(&dev->fileop_lock))
return POLLERR;
if (dev->state & DEV_DISCONNECTED) {
em2820_videodbg("device not present");
} else if (dev->state & DEV_MISCONFIGURED) {
em2820_videodbg("device is misconfigured; close and open it again");
} else {
if (dev->io == IO_NONE) {
if (!em2820_request_buffers
(dev, EM2820_NUM_READ_FRAMES)) {
em2820_warn
("poll() failed, not enough memory\n");
} else {
dev->io = IO_READ;
dev->stream = STREAM_ON;
}
}
if (dev->io == IO_READ) {
em2820_queue_unusedframes(dev);
poll_wait(filp, &dev->wait_frame, wait);
if (!list_empty(&dev->outqueue))
mask |= POLLIN | POLLRDNORM;
up(&dev->fileop_lock);
return mask;
}
}
up(&dev->fileop_lock);
return POLLERR;
}
/*
* em2820_vm_open()
*/
static void em2820_vm_open(struct vm_area_struct *vma)
{
struct em2820_frame_t *f = vma->vm_private_data;
f->vma_use_count++;
}
/*
* em2820_vm_close()
*/
static void em2820_vm_close(struct vm_area_struct *vma)
{
/* NOTE: buffers are not freed here */
struct em2820_frame_t *f = vma->vm_private_data;
f->vma_use_count--;
}
static struct vm_operations_struct em2820_vm_ops = {
.open = em2820_vm_open,
.close = em2820_vm_close,
};
/*
* em2820_v4l2_mmap()
*/
static int em2820_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct em2820 *dev = video_get_drvdata(video_devdata(filp));
unsigned long size = vma->vm_end - vma->vm_start,
start = vma->vm_start, pos, page;
u32 i;
if (down_interruptible(&dev->fileop_lock))
return -ERESTARTSYS;
if (dev->state & DEV_DISCONNECTED) {
em2820_videodbg("mmap: device not present");
up(&dev->fileop_lock);
return -ENODEV;
}
if (dev->state & DEV_MISCONFIGURED) {
em2820_videodbg ("mmap: Device is misconfigured; close and "
"open it again");
up(&dev->fileop_lock);
return -EIO;
}
if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
size != PAGE_ALIGN(dev->frame[0].buf.length)) {
up(&dev->fileop_lock);
return -EINVAL;
}
for (i = 0; i < dev->num_frames; i++) {
if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
break;
}
if (i == dev->num_frames) {
em2820_videodbg("mmap: user supplied mapping address is out of range");
up(&dev->fileop_lock);
return -EINVAL;
}
/* VM_IO is eventually going to replace PageReserved altogether */
vma->vm_flags |= VM_IO;
vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
pos = (unsigned long)dev->frame[i].bufmem;
while (size > 0) { /* size is page-aligned */
page = vmalloc_to_pfn((void *)pos);
if (remap_pfn_range(vma, start, page, PAGE_SIZE,
vma->vm_page_prot)) {
em2820_videodbg("mmap: rename page map failed");
up(&dev->fileop_lock);
return -EAGAIN;
}
start += PAGE_SIZE;
pos += PAGE_SIZE;
size -= PAGE_SIZE;
}
vma->vm_ops = &em2820_vm_ops;
vma->vm_private_data = &dev->frame[i];
em2820_vm_open(vma);
up(&dev->fileop_lock);
return 0;
}
/*
* em2820_get_ctrl()
* return the current saturation, brightness or contrast, mute state
*/
static int em2820_get_ctrl(struct em2820 *dev, struct v4l2_control *ctrl)
{
s32 tmp;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value = dev->mute;
return 0;
case V4L2_CID_AUDIO_VOLUME:
ctrl->value = dev->volume;
return 0;
case V4L2_CID_BRIGHTNESS:
if ((tmp = em2820_brightness_get(dev)) < 0)
return -EIO;
ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
return 0;
case V4L2_CID_CONTRAST:
if ((ctrl->value = em2820_contrast_get(dev)) < 0)
return -EIO;
return 0;
case V4L2_CID_SATURATION:
if ((ctrl->value = em2820_saturation_get(dev)) < 0)
return -EIO;
return 0;
case V4L2_CID_RED_BALANCE:
if ((tmp = em2820_v_balance_get(dev)) < 0)
return -EIO;
ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
return 0;
case V4L2_CID_BLUE_BALANCE:
if ((tmp = em2820_u_balance_get(dev)) < 0)
return -EIO;
ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
return 0;
case V4L2_CID_GAMMA:
if ((ctrl->value = em2820_gamma_get(dev)) < 0)
return -EIO;
return 0;
default:
return -EINVAL;
}
}
/*
* em2820_set_ctrl()
* mute or set new saturation, brightness or contrast
*/
static int em2820_set_ctrl(struct em2820 *dev, const struct v4l2_control *ctrl)
{
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value != dev->mute) {
dev->mute = ctrl->value;
em2820_audio_usb_mute(dev, ctrl->value);
return em2820_audio_analog_set(dev);
}
return 0;
case V4L2_CID_AUDIO_VOLUME:
dev->volume = ctrl->value;
return em2820_audio_analog_set(dev);
case V4L2_CID_BRIGHTNESS:
return em2820_brightness_set(dev, ctrl->value);
case V4L2_CID_CONTRAST:
return em2820_contrast_set(dev, ctrl->value);
case V4L2_CID_SATURATION:
return em2820_saturation_set(dev, ctrl->value);
case V4L2_CID_RED_BALANCE:
return em2820_v_balance_set(dev, ctrl->value);
case V4L2_CID_BLUE_BALANCE:
return em2820_u_balance_set(dev, ctrl->value);
case V4L2_CID_GAMMA:
return em2820_gamma_set(dev, ctrl->value);
default:
return -EINVAL;
}
}
/*
* em2820_stream_interrupt()
* stops streaming
*/
static int em2820_stream_interrupt(struct em2820 *dev)
{
int ret = 0;
/* stop reading from the device */
dev->stream = STREAM_INTERRUPT;
ret = wait_event_timeout(dev->wait_stream,
(dev->stream == STREAM_OFF) ||
(dev->state & DEV_DISCONNECTED),
EM2820_URB_TIMEOUT);
if (dev->state & DEV_DISCONNECTED)
return -ENODEV;
else if (ret) {
dev->state |= DEV_MISCONFIGURED;
em2820_videodbg("device is misconfigured; close and "
"open /dev/video%d again", dev->vdev->minor);
return ret;
}
return 0;
}
static int em2820_set_norm(struct em2820 *dev, int width, int height)
{
unsigned int hscale, vscale;
unsigned int maxh, maxw;
maxw = norm_maxw(dev);
maxh = norm_maxh(dev);
/* width must even because of the YUYV format */
/* height must be even because of interlacing */
height &= 0xfffe;
width &= 0xfffe;
if (height < 32)
height = 32;
if (height > maxh)
height = maxh;
if (width < 48)
width = 48;
if (width > maxw)
width = maxw;
if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
hscale = 0x3fff;
width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
vscale = 0x3fff;
height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
/* set new image size */
dev->width = width;
dev->height = height;
dev->frame_size = dev->width * dev->height * 2;
dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
dev->bytesperline = dev->width * 2;
dev->hscale = hscale;
dev->vscale = vscale;
em2820_resolution_set(dev);
return 0;
}
static void video_mux(struct em2820 *dev, int index)
{
int input, ainput;
input = INPUT(index)->vmux;
dev->ctl_input = index;
em2820_i2c_call_clients(dev, DECODER_SET_INPUT, &input);
dev->ctl_ainput = INPUT(index)->amux;
switch (dev->ctl_ainput) {
case 0:
ainput = EM2820_AUDIO_SRC_TUNER;
break;
default:
ainput = EM2820_AUDIO_SRC_LINE;
}
em2820_audio_source(dev, ainput);
}
/*
* em2820_v4l2_do_ioctl()
* This function is _not_ called directly, but from
* em2820_v4l2_ioctl. Userspace
* copying is done already, arg is a kernel pointer.
*/
static int em2820_do_ioctl(struct inode *inode, struct file *filp,
struct em2820 *dev, unsigned int cmd, void *arg,
v4l2_kioctl driver_ioctl)
{
int ret;
switch (cmd) {
/* ---------- tv norms ---------- */
case VIDIOC_ENUMSTD:
{
struct v4l2_standard *e = arg;
unsigned int i;
i = e->index;
if (i >= TVNORMS)
return -EINVAL;
ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
tvnorms[e->index].name);
e->index = i;
if (ret < 0)
return ret;
return 0;
}
case VIDIOC_G_STD:
{
v4l2_std_id *id = arg;
*id = dev->tvnorm->id;
return 0;
}
case VIDIOC_S_STD:
{
v4l2_std_id *id = arg;
unsigned int i;
for (i = 0; i < TVNORMS; i++)
if (*id == tvnorms[i].id)
break;
if (i == TVNORMS)
for (i = 0; i < TVNORMS; i++)
if (*id & tvnorms[i].id)
break;
if (i == TVNORMS)
return -EINVAL;
down(&dev->lock);
dev->tvnorm = &tvnorms[i];
em2820_set_norm(dev, dev->width, dev->height);
/*
dev->width=norm_maxw(dev);
dev->height=norm_maxh(dev);
dev->frame_size=dev->width*dev->height*2;
dev->field_size=dev->frame_size>>1;
dev->bytesperline=dev->width*2;
dev->hscale=0;
dev->vscale=0;
em2820_resolution_set(dev);
*/
/*
em2820_uninit_isoc(dev);
em2820_set_alternate(dev);
em2820_capture_start(dev, 1);
em2820_resolution_set(dev);
em2820_init_isoc(dev);
*/
em2820_i2c_call_clients(dev, DECODER_SET_NORM,
&tvnorms[i].mode);
em2820_i2c_call_clients(dev, VIDIOC_S_STD,
&dev->tvnorm->id);
up(&dev->lock);
return 0;
}
/* ------ input switching ---------- */
case VIDIOC_ENUMINPUT:
{
struct v4l2_input *i = arg;
unsigned int n;
static const char *iname[] = {
[EM2820_VMUX_COMPOSITE1] = "Composite1",
[EM2820_VMUX_COMPOSITE2] = "Composite2",
[EM2820_VMUX_COMPOSITE3] = "Composite3",
[EM2820_VMUX_COMPOSITE4] = "Composite4",
[EM2820_VMUX_SVIDEO] = "S-Video",
[EM2820_VMUX_TELEVISION] = "Television",
[EM2820_VMUX_CABLE] = "Cable TV",
[EM2820_VMUX_DVB] = "DVB",
[EM2820_VMUX_DEBUG] = "for debug only",
};
n = i->index;
if (n >= MAX_EM2820_INPUT)
return -EINVAL;
if (0 == INPUT(n)->type)
return -EINVAL;
memset(i, 0, sizeof(*i));
i->index = n;
i->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(i->name, iname[INPUT(n)->type]);
if ((EM2820_VMUX_TELEVISION == INPUT(n)->type) ||
(EM2820_VMUX_CABLE == INPUT(n)->type))
i->type = V4L2_INPUT_TYPE_TUNER;
for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
i->std |= tvnorms[n].id;
return 0;
}
case VIDIOC_G_INPUT:
{
int *i = arg;
*i = dev->ctl_input;
return 0;
}
case VIDIOC_S_INPUT:
{
int *index = arg;
if (*index >= MAX_EM2820_INPUT)
return -EINVAL;
if (0 == INPUT(*index)->type)
return -EINVAL;
down(&dev->lock);
video_mux(dev, *index);
up(&dev->lock);
return 0;
}
case VIDIOC_G_AUDIO:
{
struct v4l2_audio *a = arg;
unsigned int index = a->index;
if (a->index > 1)
return -EINVAL;
memset(a, 0, sizeof(*a));
index = dev->ctl_ainput;
if (index == 0) {
strcpy(a->name, "Television");
} else {
strcpy(a->name, "Line In");
}
a->capability = V4L2_AUDCAP_STEREO;
a->index = index;
return 0;
}
case VIDIOC_S_AUDIO:
{
struct v4l2_audio *a = arg;
if (a->index != dev->ctl_ainput)
return -EINVAL;
return 0;
}
/* --- controls ---------------------------------------------- */
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *qc = arg;
u8 i, n;
n = sizeof(em2820_qctrl) / sizeof(em2820_qctrl[0]);
for (i = 0; i < n; i++)
if (qc->id && qc->id == em2820_qctrl[i].id) {
memcpy(qc, &(em2820_qctrl[i]),
sizeof(*qc));
return 0;
}
return -EINVAL;
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl = arg;
return em2820_get_ctrl(dev, ctrl);
}
case VIDIOC_S_CTRL_OLD: /* ??? */
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl = arg;
u8 i, n;
n = sizeof(em2820_qctrl) / sizeof(em2820_qctrl[0]);
for (i = 0; i < n; i++)
if (ctrl->id == em2820_qctrl[i].id) {
if (ctrl->value <
em2820_qctrl[i].minimum
|| ctrl->value >
em2820_qctrl[i].maximum)
return -ERANGE;
return em2820_set_ctrl(dev, ctrl);
}
return -EINVAL;
}
/* --- tuner ioctls ------------------------------------------ */
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *t = arg;
int status = 0;
if (0 != t->index)
return -EINVAL;
memset(t, 0, sizeof(*t));
strcpy(t->name, "Tuner");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
/* t->signal = 0xffff;*/
/* em2820_i2c_call_clients(dev,VIDIOC_G_TUNER,t);*/
/* No way to get signal strength? */
down(&dev->lock);
em2820_i2c_call_clients(dev, DECODER_GET_STATUS,
&status);
up(&dev->lock);
t->signal =
(status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
em2820_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x", t->signal,
t->afc);
return 0;
}
case VIDIOC_S_TUNER:
{
struct v4l2_tuner *t = arg;
int status = 0;
if (0 != t->index)
return -EINVAL;
memset(t, 0, sizeof(*t));
strcpy(t->name, "Tuner");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
/* t->signal = 0xffff; */
/* No way to get signal strength? */
down(&dev->lock);
em2820_i2c_call_clients(dev, DECODER_GET_STATUS,
&status);
up(&dev->lock);
t->signal =
(status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
em2820_videodbg("VIDIO_S_TUNER: signal=%x, afc=%x\n",
t->signal, t->afc);
return 0;
}
case VIDIOC_G_FREQUENCY:
{
struct v4l2_frequency *f = arg;
memset(f, 0, sizeof(*f));
f->type = V4L2_TUNER_ANALOG_TV;
f->frequency = dev->ctl_freq;
return 0;
}
case VIDIOC_S_FREQUENCY:
{
struct v4l2_frequency *f = arg;
if (0 != f->tuner)
return -EINVAL;
if (V4L2_TUNER_ANALOG_TV != f->type)
return -EINVAL;
down(&dev->lock);
dev->ctl_freq = f->frequency;
em2820_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
up(&dev->lock);
return 0;
}
case VIDIOC_CROPCAP:
{
struct v4l2_cropcap *cc = arg;
if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return EINVAL;
cc->bounds.left = 0;
cc->bounds.top = 0;
cc->bounds.width = dev->width;
cc->bounds.height = dev->height;
cc->defrect = cc->bounds;
cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
cc->pixelaspect.denominator = 59;
return 0;
}
case VIDIOC_STREAMON:
{
int *type = arg;
if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
|| dev->io != IO_MMAP)
return -EINVAL;
if (list_empty(&dev->inqueue))
return -EINVAL;
dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
em2820_videodbg("VIDIOC_STREAMON: starting stream");
return 0;
}
case VIDIOC_STREAMOFF:
{
int *type = arg;
int ret;
if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
|| dev->io != IO_MMAP)
return -EINVAL;
if (dev->stream == STREAM_ON) {
em2820_videodbg ("VIDIOC_STREAMOFF: interrupting stream");
if ((ret = em2820_stream_interrupt(dev)))
return ret;
}
em2820_empty_framequeues(dev);
return 0;
}
default:
return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
driver_ioctl);
}
return 0;
}
/*
* em2820_v4l2_do_ioctl()
* This function is _not_ called directly, but from
* em2820_v4l2_ioctl. Userspace
* copying is done already, arg is a kernel pointer.
*/
static int em2820_video_do_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, void *arg)
{
struct em2820 *dev = filp->private_data;
if (!dev)
return -ENODEV;
if (video_debug > 1)
em2820_print_ioctl(dev->name,cmd);
switch (cmd) {
/* --- capabilities ------------------------------------------ */
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *cap = arg;
memset(cap, 0, sizeof(*cap));
strlcpy(cap->driver, "em2820", sizeof(cap->driver));
strlcpy(cap->card, em2820_boards[dev->model].name,
sizeof(cap->card));
strlcpy(cap->bus_info, dev->udev->dev.bus_id,
sizeof(cap->bus_info));
cap->version = EM2820_VERSION_CODE;
cap->capabilities =
V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_AUDIO |
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
if (dev->has_tuner)
cap->capabilities |= V4L2_CAP_TUNER;
return 0;
}
/* --- capture ioctls ---------------------------------------- */
case VIDIOC_ENUM_FMT:
{
struct v4l2_fmtdesc *fmtd = arg;
if (fmtd->index != 0)
return -EINVAL;
memset(fmtd, 0, sizeof(*fmtd));
fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
strcpy(fmtd->description, "Packed YUY2");
fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
return 0;
}
case VIDIOC_G_FMT:
{
struct v4l2_format *format = arg;
em2820_videodbg("VIDIOC_G_FMT: type=%s",
format->type ==
V4L2_BUF_TYPE_VIDEO_CAPTURE ?
"V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
V4L2_BUF_TYPE_VBI_CAPTURE ?
"V4L2_BUF_TYPE_VBI_CAPTURE " :
"not supported");
if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
format->fmt.pix.width = dev->width;
format->fmt.pix.height = dev->height;
format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
format->fmt.pix.bytesperline = dev->bytesperline;
format->fmt.pix.sizeimage = dev->frame_size;
format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
em2820_videodbg("VIDIOC_G_FMT: %dx%d", dev->width,
dev->height);
return 0;
}
case VIDIOC_TRY_FMT:
case VIDIOC_S_FMT:
{
struct v4l2_format *format = arg;
u32 i;
int ret = 0;
int width = format->fmt.pix.width;
int height = format->fmt.pix.height;
unsigned int hscale, vscale;
unsigned int maxh, maxw;
maxw = norm_maxw(dev);
maxh = norm_maxh(dev);
/* int both_fields; */
em2820_videodbg("%s: type=%s",
cmd ==
VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
"VIDIOC_S_FMT",
format->type ==
V4L2_BUF_TYPE_VIDEO_CAPTURE ?
"V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
V4L2_BUF_TYPE_VBI_CAPTURE ?
"V4L2_BUF_TYPE_VBI_CAPTURE " :
"not supported");
if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
em2820_videodbg("%s: requested %dx%d",
cmd ==
VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
"VIDIOC_S_FMT", format->fmt.pix.width,
format->fmt.pix.height);
/* FIXME: Move some code away from here */
/* width must even because of the YUYV format */
/* height must be even because of interlacing */
height &= 0xfffe;
width &= 0xfffe;
if (height < 32)
height = 32;
if (height > maxh)
height = maxh;
if (width < 48)
width = 48;
if (width > maxw)
width = maxw;
if ((hscale =
(((unsigned long)maxw) << 12) / width - 4096L) >=
0x4000)
hscale = 0x3fff;
width =
(((unsigned long)maxw) << 12) / (hscale + 4096L);
if ((vscale =
(((unsigned long)maxh) << 12) / height - 4096L) >=
0x4000)
vscale = 0x3fff;
height =
(((unsigned long)maxh) << 12) / (vscale + 4096L);
format->fmt.pix.width = width;
format->fmt.pix.height = height;
format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
format->fmt.pix.bytesperline = width * 2;
format->fmt.pix.sizeimage = width * 2 * height;
format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
format->fmt.pix.field = V4L2_FIELD_INTERLACED;
em2820_videodbg("%s: returned %dx%d (%d, %d)",
cmd ==
VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
"VIDIOC_S_FMT", format->fmt.pix.width,
format->fmt.pix.height, hscale, vscale);
if (cmd == VIDIOC_TRY_FMT)
return 0;
for (i = 0; i < dev->num_frames; i++)
if (dev->frame[i].vma_use_count) {
em2820_videodbg("VIDIOC_S_FMT failed. "
"Unmap the buffers first.");
return -EINVAL;
}
/* stop io in case it is already in progress */
if (dev->stream == STREAM_ON) {
em2820_videodbg("VIDIOC_SET_FMT: interupting stream");
if ((ret = em2820_stream_interrupt(dev)))
return ret;
}
em2820_release_buffers(dev);
dev->io = IO_NONE;
/* set new image size */
dev->width = width;
dev->height = height;
dev->frame_size = dev->width * dev->height * 2;
dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
dev->bytesperline = dev->width * 2;
dev->hscale = hscale;
dev->vscale = vscale;
/* dev->both_fileds = both_fileds; */
em2820_uninit_isoc(dev);
em2820_set_alternate(dev);
em2820_capture_start(dev, 1);
em2820_resolution_set(dev);
em2820_init_isoc(dev);
return 0;
}
/* --- streaming capture ------------------------------------- */
case VIDIOC_REQBUFS:
{
struct v4l2_requestbuffers *rb = arg;
u32 i;
int ret;
if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
rb->memory != V4L2_MEMORY_MMAP)
return -EINVAL;
if (dev->io == IO_READ) {
em2820_videodbg ("method is set to read;"
" close and open the device again to"
" choose the mmap I/O method");
return -EINVAL;
}
for (i = 0; i < dev->num_frames; i++)
if (dev->frame[i].vma_use_count) {
em2820_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped");
return -EINVAL;
}
if (dev->stream == STREAM_ON) {
em2820_videodbg("VIDIOC_REQBUFS: interrupting stream");
if ((ret = em2820_stream_interrupt(dev)))
return ret;
}
em2820_empty_framequeues(dev);
em2820_release_buffers(dev);
if (rb->count)
rb->count =
em2820_request_buffers(dev, rb->count);
dev->frame_current = NULL;
em2820_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i",
rb->count);
dev->io = rb->count ? IO_MMAP : IO_NONE;
return 0;
}
case VIDIOC_QUERYBUF:
{
struct v4l2_buffer *b = arg;
if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
b->index >= dev->num_frames || dev->io != IO_MMAP)
return -EINVAL;
memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
if (dev->frame[b->index].vma_use_count) {
b->flags |= V4L2_BUF_FLAG_MAPPED;
}
if (dev->frame[b->index].state == F_DONE)
b->flags |= V4L2_BUF_FLAG_DONE;
else if (dev->frame[b->index].state != F_UNUSED)
b->flags |= V4L2_BUF_FLAG_QUEUED;
return 0;
}
case VIDIOC_QBUF:
{
struct v4l2_buffer *b = arg;
unsigned long lock_flags;
if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
b->index >= dev->num_frames || dev->io != IO_MMAP) {
return -EINVAL;
}
if (dev->frame[b->index].state != F_UNUSED) {
return -EAGAIN;
}
dev->frame[b->index].state = F_QUEUED;
/* add frame to fifo */
spin_lock_irqsave(&dev->queue_lock, lock_flags);
list_add_tail(&dev->frame[b->index].frame,
&dev->inqueue);
spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
return 0;
}
case VIDIOC_DQBUF:
{
struct v4l2_buffer *b = arg;
struct em2820_frame_t *f;
unsigned long lock_flags;
int ret = 0;
if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
|| dev->io != IO_MMAP)
return -EINVAL;
if (list_empty(&dev->outqueue)) {
if (dev->stream == STREAM_OFF)
return -EINVAL;
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
ret = wait_event_interruptible
(dev->wait_frame,
(!list_empty(&dev->outqueue)) ||
(dev->state & DEV_DISCONNECTED));
if (ret)
return ret;
if (dev->state & DEV_DISCONNECTED)
return -ENODEV;
}
spin_lock_irqsave(&dev->queue_lock, lock_flags);
f = list_entry(dev->outqueue.next,
struct em2820_frame_t, frame);
list_del(dev->outqueue.next);
spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
f->state = F_UNUSED;
memcpy(b, &f->buf, sizeof(*b));
if (f->vma_use_count)
b->flags |= V4L2_BUF_FLAG_MAPPED;
return 0;
}
default:
return em2820_do_ioctl(inode, filp, dev, cmd, arg,
em2820_video_do_ioctl);
}
return 0;
}
/*
* em2820_v4l2_ioctl()
* handle v4l2 ioctl the main action happens in em2820_v4l2_do_ioctl()
*/
static int em2820_v4l2_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct em2820 *dev = video_get_drvdata(video_devdata(filp));
int ret = 0;
if (down_interruptible(&dev->fileop_lock))
return -ERESTARTSYS;
if (dev->state & DEV_DISCONNECTED) {
em2820_errdev("v4l2 ioctl: device not present\n");
up(&dev->fileop_lock);
return -ENODEV;
}
if (dev->state & DEV_MISCONFIGURED) {
em2820_errdev
("v4l2 ioctl: device is misconfigured; close and open it again\n");
up(&dev->fileop_lock);
return -EIO;
}
ret = video_usercopy(inode, filp, cmd, arg, em2820_video_do_ioctl);
up(&dev->fileop_lock);
return ret;
}
static struct file_operations em2820_v4l_fops = {
.owner = THIS_MODULE,
.open = em2820_v4l2_open,
.release = em2820_v4l2_close,
.ioctl = em2820_v4l2_ioctl,
.read = em2820_v4l2_read,
.poll = em2820_v4l2_poll,
.mmap = em2820_v4l2_mmap,
.llseek = no_llseek,
};
/******************************** usb interface *****************************************/
/*
* em2820_init_dev()
* allocates and inits the device structs, registers i2c bus and v4l device
*/
static int em2820_init_dev(struct em2820 **devhandle, struct usb_device *udev,
int minor, int model)
{
struct em2820 *dev;
int retval = -ENOMEM;
int errCode, i;
unsigned int maxh, maxw;
struct usb_interface *uif;
/* allocate memory for our device state and initialize it */
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
em2820_err(DRIVER_NAME ": out of memory!\n");
return -ENOMEM;
}
memset(dev, 0x00, sizeof(*dev));
snprintf(dev->name, 29, "em2820 #%d", minor);
dev->udev = udev;
dev->model = model;
init_MUTEX(&dev->lock);
init_waitqueue_head(&dev->open);
dev->em2820_write_regs = em2820_write_regs;
dev->em2820_read_reg = em2820_read_reg;
dev->em2820_read_reg_req_len = em2820_read_reg_req_len;
dev->em2820_write_regs_req = em2820_write_regs_req;
dev->em2820_read_reg_req = em2820_read_reg_req;
dev->has_tuner = em2820_boards[model].has_tuner;
dev->has_msp34xx = em2820_boards[model].has_msp34xx;
dev->tda9887_conf = em2820_boards[model].tda9887_conf;
dev->decoder = em2820_boards[model].decoder;
if (tuner >= 0)
dev->tuner_type = tuner;
else
dev->tuner_type = em2820_boards[model].tuner_type;
dev->video_inputs = em2820_boards[model].vchannels;
for (i = 0; i < TVNORMS; i++)
if (em2820_boards[model].norm == tvnorms[i].mode)
break;
if (i == TVNORMS)
i = 0;
dev->tvnorm = &tvnorms[i]; /* set default norm */
em2820_videodbg("tvnorm=%s\n", dev->tvnorm->name);
maxw = norm_maxw(dev);
maxh = norm_maxh(dev);
/* set default image size */
dev->width = maxw;
dev->height = maxh;
dev->interlaced = EM2820_INTERLACED_DEFAULT;
dev->field_size = dev->width * dev->height;
dev->frame_size =
dev->interlaced ? dev->field_size << 1 : dev->field_size;
dev->bytesperline = dev->width * 2;
dev->hscale = 0;
dev->vscale = 0;
dev->ctl_input = 2;
/* setup video picture settings for saa7113h */
memset(&dev->vpic, 0, sizeof(dev->vpic));
dev->vpic.colour = 128 << 8;
dev->vpic.hue = 128 << 8;
dev->vpic.brightness = 128 << 8;
dev->vpic.contrast = 192 << 8;
dev->vpic.whiteness = 128 << 8; /* This one isn't used */
dev->vpic.depth = 16;
dev->vpic.palette = VIDEO_PALETTE_YUV422;
/* compute alternate max packet sizes */
uif = dev->udev->actconfig->interface[0];
dev->alt_max_pkt_size[0] = 0;
for (i = 1; i <= EM2820_MAX_ALT; i++) {
u16 tmp =
le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
wMaxPacketSize);
dev->alt_max_pkt_size[i] =
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
}
#ifdef CONFIG_MODULES
/* request some modules */
if (dev->decoder == EM2820_SAA7113)
request_module("saa7113");
if (dev->decoder == EM2820_SAA7114)
request_module("saa7114");
if (dev->decoder == EM2820_TVP5150)
request_module("tvp5150");
if (dev->has_tuner)
request_module("tuner");
if (dev->tda9887_conf)
request_module("tda9887");
#endif
errCode = em2820_config(dev);
if (errCode) {
em2820_errdev("error configuring device\n");
kfree(dev);
return -ENOMEM;
}
down(&dev->lock);
/* register i2c bus */
em2820_i2c_register(dev);
/* Do board specific init and eeprom reading */
em2820_card_setup(dev);
/* configure the device */
em2820_config_i2c(dev);
up(&dev->lock);
errCode = em2820_config(dev);
#ifdef CONFIG_MODULES
if (dev->has_msp34xx)
request_module("msp3400");
#endif
/* allocate and fill v4l2 device struct */
dev->vdev = video_device_alloc();
if (NULL == dev->vdev) {
em2820_errdev("cannot allocate video_device.\n");
kfree(dev);
return -ENOMEM;
}
dev->vdev->owner = THIS_MODULE;
dev->vdev->type = VID_TYPE_CAPTURE;
if (dev->has_tuner)
dev->vdev->type |= VID_TYPE_TUNER;
dev->vdev->hardware = 0;
dev->vdev->fops = &em2820_v4l_fops;
dev->vdev->minor = -1;
dev->vdev->dev = &dev->udev->dev;
dev->vdev->release = video_device_release;
snprintf(dev->vdev->name, sizeof(dev->vdev->name), "%s",
"em2820 video");
video_set_drvdata(dev->vdev, dev);
/* register v4l2 device */
down(&dev->lock);
if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1))) {
em2820_errdev("unable to register video device (error=%i).\n",
retval);
up(&dev->lock);
video_set_drvdata(dev->vdev, NULL);
video_device_release(dev->vdev);
kfree(dev);
return -ENODEV;
}
if (dev->has_msp34xx) {
/* Send a reset to other chips via gpio */
em2820_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
udelay(2500);
em2820_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
udelay(2500);
}
video_mux(dev, 0);
up(&dev->lock);
em2820_info("V4L2 device registered as /dev/video%d\n",
dev->vdev->minor);
*devhandle = dev;
return 0;
}
/*
* em2820_usb_probe()
* checks for supported devices
*/
static int em2820_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
const struct usb_endpoint_descriptor *endpoint;
struct usb_device *udev;
struct em2820 *dev = NULL;
int retval = -ENODEV;
udev = usb_get_dev(interface_to_usbdev(interface));
endpoint = &interface->cur_altsetting->endpoint[1].desc;
/* check if the the device has the iso in endpoint at the correct place */
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
USB_ENDPOINT_XFER_ISOC) {
/* em2820_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); */
return -ENODEV;
}
if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
/* em2820_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); */
return -ENODEV;
}
/* allocate device struct */
retval = em2820_init_dev(&dev, udev, interface->minor, id->driver_info);
if (retval)
return retval;
em2820_info("Found %s\n", em2820_boards[id->driver_info].name);
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
return 0;
}
/*
* em2820_usb_disconnect()
* called when the device gets diconencted
* video device will be unregistered on v4l2_close in case it is still open
*/
static void em2820_usb_disconnect(struct usb_interface *interface)
{
struct em2820 *dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
if (!dev)
return;
down_write(&em2820_disconnect);
down(&dev->lock);
em2820_info("disconnecting %s\n", dev->vdev->name);
wake_up_interruptible_all(&dev->open);
if (dev->users) {
em2820_warn
("device /dev/video%d is open! Deregistration and memory "
"deallocation are deferred on close.\n", dev->vdev->minor);
dev->state |= DEV_MISCONFIGURED;
em2820_uninit_isoc(dev);
dev->state |= DEV_DISCONNECTED;
wake_up_interruptible(&dev->wait_frame);
wake_up_interruptible(&dev->wait_stream);
} else {
dev->state |= DEV_DISCONNECTED;
em2820_release_resources(dev);
}
up(&dev->lock);
if (!dev->users)
kfree(dev);
up_write(&em2820_disconnect);
}
static struct usb_driver em2820_usb_driver = {
.owner = THIS_MODULE,
.name = "em2820",
.probe = em2820_usb_probe,
.disconnect = em2820_usb_disconnect,
.id_table = em2820_id_table,
};
static int __init em2820_module_init(void)
{
int result;
printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
(EM2820_VERSION_CODE >> 16) & 0xff,
(EM2820_VERSION_CODE >> 8) & 0xff, EM2820_VERSION_CODE & 0xff);
#ifdef SNAPSHOT
printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
#endif
/* register this driver with the USB subsystem */
result = usb_register(&em2820_usb_driver);
if (result)
em2820_err(DRIVER_NAME
" usb_register failed. Error number %d.\n", result);
return result;
}
static void __exit em2820_module_exit(void)
{
/* deregister this driver with the USB subsystem */
usb_deregister(&em2820_usb_driver);
}
module_init(em2820_module_init);
module_exit(em2820_module_exit);
drivers/media/video/em28xx/em28xx.h 0 → 100644
View file @ a6c2ba28
/*
em2820-cards.c - driver for Empia EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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.
*/
#ifndef _EM2820_H
#define _EM2820_H
#include <linux/videodev.h>
#include <linux/i2c.h>
/* maximum number of frames that can be queued */
#define EM2820_NUM_FRAMES 5
/* number of frames that get used for v4l2_read() */
#define EM2820_NUM_READ_FRAMES 2
/* number of buffers for isoc transfers */
#define EM2820_NUM_BUFS 5
/* number of packets for each buffer */
// windows requests only 40 packets .. so we better do the same
// this is what I found out for all alternate numbers there!
#define EM2820_NUM_PACKETS 40
/* packet size for each packet */
/* no longer needed: read from endpoint descriptor */
//#define EM2820_MAX_PACKET_SIZE 3072 //7
//#define EM2820_MAX_PACKET_SIZE 2892 //6
//#define EM2820_MAX_PACKET_SIZE 2580 //5
//#define EM2820_MAX_PACKET_SIZE 1448 //2
/* default alternate; 0 means choose the best */
#define EM2820_PINOUT 0
#define EM2820_MAX_ALT 7
#define EM2820_INTERLACED_DEFAULT 1
/*
#define (use usbview if you want to get the other alternate number infos)
#define
#define alternate number 2
#define Endpoint Address: 82
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 1448
Interval: 125us
alternate number 7
Endpoint Address: 82
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 3072
Interval: 125us
*/
/* time to wait when stopping the isoc transfer */
#define EM2820_URB_TIMEOUT msecs_to_jiffies(EM2820_NUM_BUFS * EM2820_NUM_PACKETS)
/* the various frame states */
enum em2820_frame_state {
F_UNUSED = 0,
F_QUEUED,
F_GRABBING,
F_DONE,
F_ERROR,
};
/* stream states */
enum em2820_stream_state {
STREAM_OFF,
STREAM_INTERRUPT,
STREAM_ON,
};
/* frames */
struct em2820_frame_t {
void *bufmem;
struct v4l2_buffer buf;
enum em2820_frame_state state;
struct list_head frame;
unsigned long vma_use_count;
int top_field;
int fieldbytesused;
};
/* io methods */
enum em2820_io_method {
IO_NONE,
IO_READ,
IO_MMAP,
};
/* inputs */
#define MAX_EM2820_INPUT 4
enum enum2820_itype {
EM2820_VMUX_COMPOSITE1 = 1,
EM2820_VMUX_COMPOSITE2,
EM2820_VMUX_COMPOSITE3,
EM2820_VMUX_COMPOSITE4,
EM2820_VMUX_SVIDEO,
EM2820_VMUX_TELEVISION,
EM2820_VMUX_CABLE,
EM2820_VMUX_DVB,
EM2820_VMUX_DEBUG,
EM2820_RADIO,
};
struct em2820_input {
enum enum2820_itype type;
unsigned int vmux;
unsigned int amux;
};
#define INPUT(nr) (&em2820_boards[dev->model].input[nr])
enum em2820_decoder {
EM2820_TVP5150,
EM2820_SAA7113,
EM2820_SAA7114
};
struct em2820_board {
char *name;
int vchannels;
int norm;
int tuner_type;
/* i2c flags */
unsigned int tda9887_conf;
unsigned int has_tuner:1;
unsigned int has_msp34xx:1;
enum em2820_decoder decoder;
struct em2820_input input[MAX_EM2820_INPUT];
};
struct em2820_eeprom {
u32 id; /* 0x9567eb1a */
u16 vendor_ID;
u16 product_ID;
u16 chip_conf;
u16 board_conf;
u16 string1, string2, string3;
u8 string_idx_table;
};
/* device states */
enum em2820_dev_state {
DEV_INITIALIZED = 0x01,
DEV_DISCONNECTED = 0x02,
DEV_MISCONFIGURED = 0x04,
};
/* tvnorms */
struct em2820_tvnorm {
char *name;
v4l2_std_id id;
/* mode for saa7113h */
int mode;
};
/* main device struct */
struct em2820 {
/* generic device properties */
char name[30]; /* name (including minor) of the device */
int model; /* index in the device_data struct */
int video_inputs; /* number of video inputs */
unsigned int has_tuner:1;
unsigned int has_msp34xx:1;
unsigned int has_tda9887:1;
enum em2820_decoder decoder;
int tuner_type; /* type of the tuner */
int tuner_addr; /* tuner address */
int tda9887_conf;
/* i2c i/o */
struct i2c_adapter i2c_adap;
struct i2c_client i2c_client;
/* video for linux */
int users; /* user count for exclusive use */
struct video_device *vdev; /* video for linux device struct */
struct video_picture vpic; /* picture settings only used to init saa7113h */
struct em2820_tvnorm *tvnorm; /* selected tv norm */
int ctl_freq; /* selected frequency */
unsigned int ctl_input; /* selected input */
unsigned int ctl_ainput; /* slected audio input */
int mute;
int volume;
/* frame properties */
struct em2820_frame_t frame[EM2820_NUM_FRAMES]; /* list of frames */
int num_frames; /* number of frames currently in use */
unsigned int frame_count; /* total number of transfered frames */
struct em2820_frame_t *frame_current; /* the frame that is being filled */
int width; /* current frame width */
int height; /* current frame height */
int frame_size; /* current frame size */
int field_size; /* current field size */
int bytesperline;
int hscale; /* horizontal scale factor (see datasheet) */
int vscale; /* vertical scale factor (see datasheet) */
int interlaced; /* 1=interlace fileds, 0=just top fileds */
int type;
/* states */
enum em2820_dev_state state;
enum em2820_stream_state stream;
enum em2820_io_method io;
/* locks */
struct semaphore lock, fileop_lock;
spinlock_t queue_lock;
struct list_head inqueue, outqueue;
wait_queue_head_t open, wait_frame, wait_stream;
struct video_device *vbi_dev;
unsigned char eedata[256];
/* usb transfer */
struct usb_device *udev; /* the usb device */
int alt; /* alternate */
int max_pkt_size; /* max packet size of isoc transaction */
unsigned int alt_max_pkt_size[EM2820_MAX_ALT + 1]; /* array of wMaxPacketSize */
struct urb *urb[EM2820_NUM_BUFS]; /* urb for isoc transfers */
char *transfer_buffer[EM2820_NUM_BUFS]; /* transfer buffers for isoc transfer */
/* helper funcs that call usb_control_msg */
int (*em2820_write_regs) (struct em2820 * dev, u16 reg, char *buf,
int len);
int (*em2820_read_reg) (struct em2820 * dev, u16 reg);
int (*em2820_read_reg_req_len) (struct em2820 * dev, u8 req, u16 reg,
char *buf, int len);
int (*em2820_write_regs_req) (struct em2820 * dev, u8 req, u16 reg,
char *buf, int len);
int (*em2820_read_reg_req) (struct em2820 * dev, u8 req, u16 reg);
};
/* Provided by em2820-i2c.c */
void em2820_i2c_call_clients(struct em2820 *dev, unsigned int cmd, void *arg);
int em2820_i2c_register(struct em2820 *dev);
int em2820_i2c_unregister(struct em2820 *dev);
/* Provided by em2820-core.c */
void em2820_print_ioctl(char *name, unsigned int cmd);
u32 em2820_request_buffers(struct em2820 *dev, u32 count);
void em2820_queue_unusedframes(struct em2820 *dev);
void em2820_release_buffers(struct em2820 *dev);
int em2820_read_reg_req_len(struct em2820 *dev, u8 req, u16 reg,
char *buf, int len);
int em2820_read_reg_req(struct em2820 *dev, u8 req, u16 reg);
int em2820_read_reg(struct em2820 *dev, u16 reg);
int em2820_write_regs_req(struct em2820 *dev, u8 req, u16 reg, char *buf,
int len);
int em2820_write_regs(struct em2820 *dev, u16 reg, char *buf, int len);
int em2820_write_reg_bits(struct em2820 *dev, u16 reg, u8 val,
u8 bitmask);
int em2820_write_ac97(struct em2820 *dev, u8 reg, u8 * val);
int em2820_audio_analog_set(struct em2820 *dev);
int em2820_colorlevels_set_default(struct em2820 *dev);
int em2820_capture_start(struct em2820 *dev, int start);
int em2820_outfmt_set_yuv422(struct em2820 *dev);
int em2820_accumulator_set(struct em2820 *dev, u8 xmin, u8 xmax, u8 ymin,
u8 ymax);
int em2820_capture_area_set(struct em2820 *dev, u8 hstart, u8 vstart,
u16 width, u16 height);
int em2820_scaler_set(struct em2820 *dev, u16 h, u16 v);
int em2820_resolution_set(struct em2820 *dev);
void em2820_isocIrq(struct urb *urb, struct pt_regs *regs);
int em2820_init_isoc(struct em2820 *dev);
void em2820_uninit_isoc(struct em2820 *dev);
int em2820_set_alternate(struct em2820 *dev);
/* Provided by em2820-cards.c */
extern void em2820_card_setup(struct em2820 *dev);
extern struct em2820_board em2820_boards[];
extern struct usb_device_id em2820_id_table[];
/* em2820 registers */
#define USBSUSP_REG 0x0c /* */
#define AUDIOSRC_REG 0x0e
#define XCLK_REG 0x0f
#define VINMODE_REG 0x10
#define VINCTRL_REG 0x11
#define VINENABLE_REG 0x12 /* */
#define GAMMA_REG 0x14
#define RGAIN_REG 0x15
#define GGAIN_REG 0x16
#define BGAIN_REG 0x17
#define ROFFSET_REG 0x18
#define GOFFSET_REG 0x19
#define BOFFSET_REG 0x1a
#define OFLOW_REG 0x1b
#define HSTART_REG 0x1c
#define VSTART_REG 0x1d
#define CWIDTH_REG 0x1e
#define CHEIGHT_REG 0x1f
#define YGAIN_REG 0x20
#define YOFFSET_REG 0x21
#define UVGAIN_REG 0x22
#define UOFFSET_REG 0x23
#define VOFFSET_REG 0x24
#define SHARPNESS_REG 0x25
#define COMPR_REG 0x26
#define OUTFMT_REG 0x27
#define XMIN_REG 0x28
#define XMAX_REG 0x29
#define YMIN_REG 0x2a
#define YMAX_REG 0x2b
#define HSCALELOW_REG 0x30
#define HSCALEHIGH_REG 0x31
#define VSCALELOW_REG 0x32
#define VSCALEHIGH_REG 0x33
#define AC97LSB_REG 0x40
#define AC97MSB_REG 0x41
#define AC97ADDR_REG 0x42
#define AC97BUSY_REG 0x43
/* em202 registers */
#define MASTER_AC97 0x02
#define VIDEO_AC97 0x14
/* register settings */
#define EM2820_AUDIO_SRC_TUNER 0xc0
#define EM2820_AUDIO_SRC_LINE 0x80
/* printk macros */
#define em2820_err(fmt, arg...) do {\
printk(KERN_ERR fmt , ##arg); } while (0)
#define em2820_errdev(fmt, arg...) do {\
printk(KERN_ERR "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em2820_info(fmt, arg...) do {\
printk(KERN_INFO "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em2820_warn(fmt, arg...) do {\
printk(KERN_WARNING "%s: "fmt,\
dev->name , ##arg); } while (0)
inline static int em2820_audio_source(struct em2820 *dev, int input)
{
return em2820_write_reg_bits(dev, AUDIOSRC_REG, input, 0xc0);
}
inline static int em2820_audio_usb_mute(struct em2820 *dev, int mute)
{
return em2820_write_reg_bits(dev, XCLK_REG, mute ? 0x00 : 0x80, 0x80);
}
inline static int em2820_audio_analog_setup(struct em2820 *dev)
{
/* unmute video mixer with default volume level */
return em2820_write_ac97(dev, VIDEO_AC97, "\x08\x08");
}
inline static int em2820_compression_disable(struct em2820 *dev)
{
/* side effect of disabling scaler and mixer */
return em2820_write_regs(dev, COMPR_REG, "\x00", 1);
}
inline static int em2820_contrast_get(struct em2820 *dev)
{
return em2820_read_reg(dev, YGAIN_REG) & 0x1f;
}
inline static int em2820_brightness_get(struct em2820 *dev)
{
return em2820_read_reg(dev, YOFFSET_REG);
}
inline static int em2820_saturation_get(struct em2820 *dev)
{
return em2820_read_reg(dev, UVGAIN_REG) & 0x1f;
}
inline static int em2820_u_balance_get(struct em2820 *dev)
{
return em2820_read_reg(dev, UOFFSET_REG);
}
inline static int em2820_v_balance_get(struct em2820 *dev)
{
return em2820_read_reg(dev, VOFFSET_REG);
}
inline static int em2820_gamma_get(struct em2820 *dev)
{
return em2820_read_reg(dev, GAMMA_REG) & 0x3f;
}
inline static int em2820_contrast_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, YGAIN_REG, &tmp, 1);
}
inline static int em2820_brightness_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, YOFFSET_REG, &tmp, 1);
}
inline static int em2820_saturation_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, UVGAIN_REG, &tmp, 1);
}
inline static int em2820_u_balance_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, UOFFSET_REG, &tmp, 1);
}
inline static int em2820_v_balance_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, VOFFSET_REG, &tmp, 1);
}
inline static int em2820_gamma_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, GAMMA_REG, &tmp, 1);
}
/*FIXME: maxw should be dependent of alt mode */
#define norm_maxw(dev) 720
inline static unsigned int norm_maxh(struct em2820 *dev)
{
return (dev->tvnorm->id & V4L2_STD_625_50) ? 576 : 480;
}
#endif
drivers/media/video/tvp5150.c
View file @ a6c2ba28
......@@ -35,6 +35,47 @@ MODULE_PARM_DESC(debug, "Debug level (0-1)");
printk(format , ##args); \
} while (0)
/* supported controls */
static struct v4l2_queryctrl tvp5150_qctrl[] = {
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
.maximum = 255,
.step = 1,
.default_value = 0,
.flags = 0,
}, {
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 255,
.step = 0x1,
.default_value = 0x10,
.flags = 0,
}, {
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Saturation",
.minimum = 0,
.maximum = 255,
.step = 0x1,
.default_value = 0x10,
.flags = 0,
}, {
.id = V4L2_CID_HUE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Hue",
.minimum = -128,
.maximum = 127,
.step = 0x1,
.default_value = 0x10,
.flags = 0,
}
};
struct tvp5150 {
struct i2c_client *client;
......@@ -73,7 +114,7 @@ static inline void tvp5150_write(struct i2c_client *c, unsigned char addr,
buffer[0] = addr;
buffer[1] = value;
dprintk(1,"tvp5150: writing 0x%02x 0x%02x\n",buffer[0],buffer[1]);
dprintk(1, "tvp5150: writing 0x%02x 0x%02x\n", buffer[0], buffer[1]);
if (2 != (rc = i2c_master_send(c, buffer, 2)))
dprintk(0, "i2c i/o error: rc == %d (should be 2)\n", rc);
}
......@@ -398,28 +439,11 @@ static inline void tvp5150_selmux(struct i2c_client *c,
enum tvp5150_input input)
{
struct tvp5150 *decoder = i2c_get_clientdata(c);
int tvp_input;
/* FIXME: It is dependent of basic driver */
switch (input)
{
case 2:
tvp_input=TVP5150_ANALOG_CH0;
break;
case 0:
tvp_input=TVP5150_ANALOG_CH1;
break;
case 1:
tvp_input=TVP5150_SVIDEO;
break;
default:
tvp_input=TVP5150_BLACK_SCREEN;
}
if (!decoder->enable)
tvp_input|=TVP5150_BLACK_SCREEN;
input |= TVP5150_BLACK_SCREEN;
tvp5150_write(c, TVP5150_VD_IN_SRC_SEL_1, tvp_input);
tvp5150_write(c, TVP5150_VD_IN_SRC_SEL_1, input);
};
static inline void tvp5150_reset(struct i2c_client *c)
......@@ -458,6 +482,50 @@ static inline void tvp5150_reset(struct i2c_client *c)
tvp5150_write(c, TVP5150_HUE_CTL, (decoder->hue - 32768) >> 8);
};
static int tvp5150_get_ctrl(struct i2c_client *c, struct v4l2_control *ctrl)
{
/* struct tvp5150 *decoder = i2c_get_clientdata(c); */
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ctrl->value = tvp5150_read(c, TVP5150_BRIGHT_CTL);
return 0;
case V4L2_CID_CONTRAST:
ctrl->value = tvp5150_read(c, TVP5150_CONTRAST_CTL);
return 0;
case V4L2_CID_SATURATION:
ctrl->value = tvp5150_read(c, TVP5150_SATURATION_CTL);
return 0;
case V4L2_CID_HUE:
ctrl->value = tvp5150_read(c, TVP5150_HUE_CTL);
return 0;
default:
return -EINVAL;
}
}
static int tvp5150_set_ctrl(struct i2c_client *c, struct v4l2_control *ctrl)
{
/* struct tvp5150 *decoder = i2c_get_clientdata(c); */
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
tvp5150_write(c, TVP5150_BRIGHT_CTL, ctrl->value);
return 0;
case V4L2_CID_CONTRAST:
tvp5150_write(c, TVP5150_CONTRAST_CTL, ctrl->value);
return 0;
case V4L2_CID_SATURATION:
tvp5150_write(c, TVP5150_SATURATION_CTL, ctrl->value);
return 0;
case V4L2_CID_HUE:
tvp5150_write(c, TVP5150_HUE_CTL, ctrl->value);
return 0;
default:
return -EINVAL;
}
}
/****************************************************************************
I2C Command
****************************************************************************/
......@@ -532,7 +600,7 @@ static int tvp5150_command(struct i2c_client *client,
return -EINVAL;
}
decoder->input=*iarg;
decoder->input = *iarg;
tvp5150_selmux(client, decoder->input);
break;
......@@ -557,28 +625,79 @@ static int tvp5150_command(struct i2c_client *client,
break;
}
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *qc = arg;
u8 i, n;
dprintk(1, KERN_DEBUG "VIDIOC_QUERYCTRL");
n = sizeof(tvp5150_qctrl) / sizeof(tvp5150_qctrl[0]);
for (i = 0; i < n; i++)
if (qc->id && qc->id == tvp5150_qctrl[i].id) {
memcpy(qc, &(tvp5150_qctrl[i]),
sizeof(*qc));
return 0;
}
return -EINVAL;
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl = arg;
dprintk(1, KERN_DEBUG "VIDIOC_G_CTRL");
return tvp5150_get_ctrl(client, ctrl);
}
case VIDIOC_S_CTRL_OLD: /* ??? */
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl = arg;
u8 i, n;
dprintk(1, KERN_DEBUG "VIDIOC_S_CTRL");
n = sizeof(tvp5150_qctrl) / sizeof(tvp5150_qctrl[0]);
for (i = 0; i < n; i++)
if (ctrl->id == tvp5150_qctrl[i].id) {
if (ctrl->value <
tvp5150_qctrl[i].minimum
|| ctrl->value >
tvp5150_qctrl[i].maximum)
return -ERANGE;
dprintk(1,
KERN_DEBUG
"VIDIOC_S_CTRL: id=%d, value=%d",
ctrl->id, ctrl->value);
return tvp5150_set_ctrl(client, ctrl);
}
return -EINVAL;
}
case DECODER_SET_PICTURE:
{
struct video_picture *pic = arg;
if (decoder->bright != pic->brightness) {
/* We want 0 to 255 we get 0-65535 */
decoder->bright = pic->brightness;
tvp5150_write(client, TVP5150_BRIGHT_CTL, decoder->bright >> 8);
tvp5150_write(client, TVP5150_BRIGHT_CTL,
decoder->bright >> 8);
}
if (decoder->contrast != pic->contrast) {
/* We want 0 to 255 we get 0-65535 */
decoder->contrast = pic->contrast;
tvp5150_write(client, TVP5150_CONTRAST_CTL, decoder->contrast >> 8);
tvp5150_write(client, TVP5150_CONTRAST_CTL,
decoder->contrast >> 8);
}
if (decoder->sat != pic->colour) {
/* We want 0 to 255 we get 0-65535 */
decoder->sat = pic->colour;
tvp5150_write(client, TVP5150_SATURATION_CTL, decoder->contrast >> 8);
tvp5150_write(client, TVP5150_SATURATION_CTL,
decoder->contrast >> 8);
}
if (decoder->hue != pic->hue) {
/* We want -128 to 127 we get 0-65535 */
decoder->hue = pic->hue;
tvp5150_write(client, TVP5150_HUE_CTL, (decoder->hue - 32768) >> 8);
tvp5150_write(client, TVP5150_HUE_CTL,
(decoder->hue - 32768) >> 8);
}
break;
}
......@@ -594,14 +713,13 @@ static int tvp5150_command(struct i2c_client *client,
****************************************************************************/
static struct i2c_driver driver;
static struct i2c_client client_template =
{
static struct i2c_client client_template = {
.name = "(unset)",
.flags = I2C_CLIENT_ALLOW_USE,
.driver = &driver,
};
static int tvp5150_detect_client (struct i2c_adapter *adapter,
static int tvp5150_detect_client(struct i2c_adapter *adapter,
int address, int kind)
{
struct i2c_client *client;
......@@ -625,7 +743,7 @@ static int tvp5150_detect_client (struct i2c_adapter *adapter,
client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (client == 0)
return -ENOMEM;
memcpy(client,&client_template,sizeof(struct i2c_client));
memcpy(client, &client_template, sizeof(struct i2c_client));
core = kmalloc(sizeof(struct tvp5150), GFP_KERNEL);
if (core == 0) {
......@@ -651,13 +769,13 @@ static int tvp5150_detect_client (struct i2c_adapter *adapter,
return rv;
}
dump_reg (client);
if (debug > 1)
dump_reg(client);
return 0;
}
static int
tvp5150_attach_adapter (struct i2c_adapter *adapter)
static int tvp5150_attach_adapter(struct i2c_adapter *adapter)
{
dprintk(1,
KERN_INFO
......@@ -666,8 +784,7 @@ tvp5150_attach_adapter (struct i2c_adapter *adapter)
return i2c_probe(adapter, &addr_data, &tvp5150_detect_client);
}
static int
tvp5150_detach_client (struct i2c_client *client)
static int tvp5150_detach_client(struct i2c_client *client)
{
struct tvp5150 *decoder = i2c_get_clientdata(client);
int err;
......@@ -699,14 +816,12 @@ static struct i2c_driver driver = {
.command = tvp5150_command,
};
static int __init
tvp5150_init (void)
static int __init tvp5150_init(void)
{
return i2c_add_driver(&driver);
}
static void __exit
tvp5150_exit (void)
static void __exit tvp5150_exit(void)
{
i2c_del_driver(&driver);
}
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7