--- /dev/null
+/*
+ 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);
--- /dev/null
+/*
+ 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;
+}
--- /dev/null
+/*
+ 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;
+}
--- /dev/null
+/*
+ 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);
--- /dev/null
+/*
+ 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
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;
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);
}
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)
tvp5150_write(c, TVP5150_ANAL_CHL_CTL, 0x15);
/* Normal Operation */
-// tvp5150_write(c, TVP5150_OP_MODE_CTL, 0x00);
+// tvp5150_write(c, TVP5150_OP_MODE_CTL, 0x00);
/* Activate YCrCb output 0x9 or 0xd ? */
tvp5150_write(c, TVP5150_MISC_CTL, 0x6f);
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
****************************************************************************/
break;
case DECODER_GET_CAPABILITIES:
- {
- struct video_decoder_capability *cap = arg;
-
- cap->flags = VIDEO_DECODER_PAL |
- VIDEO_DECODER_NTSC |
- VIDEO_DECODER_SECAM |
- VIDEO_DECODER_AUTO | VIDEO_DECODER_CCIR;
- cap->inputs = 3;
- cap->outputs = 1;
- break;
- }
+ {
+ struct video_decoder_capability *cap = arg;
+
+ cap->flags = VIDEO_DECODER_PAL |
+ VIDEO_DECODER_NTSC |
+ VIDEO_DECODER_SECAM |
+ VIDEO_DECODER_AUTO | VIDEO_DECODER_CCIR;
+ cap->inputs = 3;
+ cap->outputs = 1;
+ break;
+ }
case DECODER_GET_STATUS:
- {
- break;
- }
+ {
+ break;
+ }
case DECODER_SET_GPIO:
break;
break;
case DECODER_SET_NORM:
- {
- int *iarg = arg;
+ {
+ int *iarg = arg;
- switch (*iarg) {
+ switch (*iarg) {
- case VIDEO_MODE_NTSC:
- break;
+ case VIDEO_MODE_NTSC:
+ break;
- case VIDEO_MODE_PAL:
- break;
+ case VIDEO_MODE_PAL:
+ break;
- case VIDEO_MODE_SECAM:
- break;
+ case VIDEO_MODE_SECAM:
+ break;
- case VIDEO_MODE_AUTO:
- break;
+ case VIDEO_MODE_AUTO:
+ break;
- default:
- return -EINVAL;
+ default:
+ return -EINVAL;
+ }
+ decoder->norm = *iarg;
+ break;
}
- decoder->norm = *iarg;
- break;
- }
case DECODER_SET_INPUT:
- {
- int *iarg = arg;
- if (*iarg < 0 || *iarg > 3) {
- return -EINVAL;
- }
+ {
+ int *iarg = arg;
+ if (*iarg < 0 || *iarg > 3) {
+ return -EINVAL;
+ }
- decoder->input=*iarg;
- tvp5150_selmux(client, decoder->input);
+ decoder->input = *iarg;
+ tvp5150_selmux(client, decoder->input);
- break;
- }
+ break;
+ }
case DECODER_SET_OUTPUT:
- {
- int *iarg = arg;
+ {
+ int *iarg = arg;
- /* not much choice of outputs */
- if (*iarg != 0) {
- return -EINVAL;
+ /* not much choice of outputs */
+ if (*iarg != 0) {
+ return -EINVAL;
+ }
+ break;
}
- break;
- }
case DECODER_ENABLE_OUTPUT:
- {
- int *iarg = arg;
+ {
+ int *iarg = arg;
- decoder->enable = (*iarg != 0);
+ decoder->enable = (*iarg != 0);
- tvp5150_selmux(client, decoder->input);
+ tvp5150_selmux(client, decoder->input);
- break;
- }
- 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);
+ break;
}
- 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);
+ 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;
}
- 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);
+ case VIDIOC_G_CTRL:
+ {
+ struct v4l2_control *ctrl = arg;
+ dprintk(1, KERN_DEBUG "VIDIOC_G_CTRL");
+
+ return tvp5150_get_ctrl(client, ctrl);
}
- 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);
+ 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);
+ }
+ 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);
+ }
+ 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);
+ }
+ 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);
+ }
+ break;
}
- break;
- }
default:
return -EINVAL;
}
****************************************************************************/
static struct i2c_driver driver;
-static struct i2c_client client_template =
-{
- .name = "(unset)",
- .flags = I2C_CLIENT_ALLOW_USE,
- .driver = &driver,
+static struct i2c_client client_template = {
+ .name = "(unset)",
+ .flags = I2C_CLIENT_ALLOW_USE,
+ .driver = &driver,
};
-static int tvp5150_detect_client (struct i2c_adapter *adapter,
- int address, int kind)
+static int tvp5150_detect_client(struct i2c_adapter *adapter,
+ int address, int kind)
{
struct i2c_client *client;
struct tvp5150 *core;
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) {
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
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;
.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);
}
projects / linux-2.6 / commitdiff