diff options
author | R.M. Thomas <rmthomas@sciolus.org> | 2010-06-18 12:29:49 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-06-18 12:34:42 -0700 |
commit | 702422bd2d3f44e454a97ca7054edde84cc18126 (patch) | |
tree | e1a35dacb52fda0c7295e0dea63a5fd5f04e00be /drivers/staging/easycap/easycap_low.c | |
parent | 178f16db8f24b87fc5f3d16f426ed41c397b96a9 (diff) |
Staging: easycap: add easycap driver
This adds the easycap USB video adapter driver to
the staging directory.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/easycap/easycap_low.c')
-rw-r--r-- | drivers/staging/easycap/easycap_low.c | 1057 |
1 files changed, 1057 insertions, 0 deletions
diff --git a/drivers/staging/easycap/easycap_low.c b/drivers/staging/easycap/easycap_low.c new file mode 100644 index 000000000000..e7c189af1476 --- /dev/null +++ b/drivers/staging/easycap/easycap_low.c @@ -0,0 +1,1057 @@ +/***************************************************************************** +* * +* * +* easycap_low.c * +* * +* * +*****************************************************************************/ +/* + * + * Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org> + * + * + * This 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. + * + * The software 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 software; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * +*/ +/*****************************************************************************/ +/* + * ACKNOWLEGEMENTS AND REFERENCES + * ------------------------------ + * This driver makes use of register information contained in the Syntek + * Semicon DC-1125 driver hosted at + * http://sourceforge.net/projects/syntekdriver/. + * Particularly useful has been a patch to the latter driver provided by + * Ivor Hewitt in January 2009. The NTSC implementation is taken from the + * work of Ben Trask. +*/ +/****************************************************************************/ + +#include "easycap_debug.h" +#include "easycap.h" + +/*--------------------------------------------------------------------------*/ +const struct stk1160config { int reg; int set; } stk1160config[256] = { + {0x000, 0x0098}, + {0x002, 0x0093}, + + {0x001, 0x0003}, + {0x003, 0x0080}, + {0x00D, 0x0000}, + {0x00F, 0x0002}, + {0x018, 0x0010}, + {0x019, 0x0000}, + {0x01A, 0x0014}, + {0x01B, 0x000E}, + {0x01C, 0x0046}, + + {0x100, 0x0033}, + {0x103, 0x0000}, + {0x104, 0x0000}, + {0x105, 0x0000}, + {0x106, 0x0000}, + +#if defined(PREFER_NTSC) + +#undef OLDMARGIN +#if defined(OLDMARGIN) + {0x110, 0x0008}, +#else + {0x110, 0x0014}, +#endif /*OLDMARGIN*/ + + {0x111, 0x0000}, + {0x112, 0x0003}, + {0x113, 0x0000}, + +#if defined(OLDMARGIN) + {0x114, 0x0508}, +#else + {0x114, 0x0514}, +#endif /*OLDMARGIN*/ + + {0x115, 0x0005}, + {0x116, 0x00F3}, + {0x117, 0x0000}, + +#else /* ! PREFER_NTSC*/ + +#if defined(OLDMARGIN) + {0x110, 0x0008}, +#else + {0x110, 0x0014}, +#endif /*OLDMARGIN*/ + + {0x111, 0x0000}, + {0x112, 0x0020}, + {0x113, 0x0000}, + +#if defined(OLDMARGIN) + {0x114, 0x0508}, +#else + {0x114, 0x0514}, +#endif /*OLDMARGIN*/ + + {0x115, 0x0005}, + {0x116, 0x0110}, + {0x117, 0x0001}, + +#endif /* ! PREFER_NTSC*/ + + {0x202, 0x000F}, + {0x203, 0x004A}, + {0x2FF, 0x0000}, +/*---------------------------------------------------------------------------*/ + {0xFFF, 0xFFFF} + }; +/*--------------------------------------------------------------------------*/ +const struct saa7113config { int reg; int set; } saa7113config[256] = { + {0x01, 0x08}, + {0x02, 0x80}, + {0x03, 0x33}, + {0x04, 0x00}, + {0x05, 0x00}, + {0x06, 0xE9}, + {0x07, 0x0D}, +#if defined(PREFER_NTSC) + {0x08, 0x78}, +#else + {0x08, 0x38}, +#endif /* ! PREFER_NTSC*/ + {0x09, 0x00}, + {0x0A, SAA_0A_DEFAULT}, + {0x0B, SAA_0B_DEFAULT}, + {0x0C, SAA_0C_DEFAULT}, + {0x0D, SAA_0D_DEFAULT}, + {0x0E, 0x01}, + {0x0F, 0x36}, + {0x10, 0x00}, + {0x11, 0x0C}, + {0x12, 0xE7}, + {0x13, 0x00}, + {0x15, 0x00}, + {0x16, 0x00}, +#if defined(PREFER_NTSC) + {0x40, 0x82}, +#else + {0x40, 0x02}, +#endif /* ! PREFER_NTSC*/ + {0x41, 0xFF}, + {0x42, 0xFF}, + {0x43, 0xFF}, + {0x44, 0xFF}, + {0x45, 0xFF}, + {0x46, 0xFF}, + {0x47, 0xFF}, + {0x48, 0xFF}, + {0x49, 0xFF}, + {0x4A, 0xFF}, + {0x4B, 0xFF}, + {0x4C, 0xFF}, + {0x4D, 0xFF}, + {0x4E, 0xFF}, + {0x4F, 0xFF}, + {0x50, 0xFF}, + {0x51, 0xFF}, + {0x52, 0xFF}, + {0x53, 0xFF}, + {0x54, 0xFF}, + {0x55, 0xFF}, + {0x56, 0xFF}, + {0x57, 0xFF}, + {0x58, 0x40}, + {0x59, 0x54}, +#if defined(PREFER_NTSC) + {0x5A, 0x0A}, +#else + {0x5A, 0x07}, +#endif /* ! PREFER_NTSC*/ + {0x5B, 0x83}, + {0xFF, 0xFF} + }; +/*--------------------------------------------------------------------------*/ + +/****************************************************************************/ +int +confirm_resolution(struct usb_device *p) +{ +__u8 get0, get1, get2, get3, get4, get5, get6, get7; +GET(p, 0x0110, &get0); +GET(p, 0x0111, &get1); +GET(p, 0x0112, &get2); +GET(p, 0x0113, &get3); +GET(p, 0x0114, &get4); +GET(p, 0x0115, &get5); +GET(p, 0x0116, &get6); +GET(p, 0x0117, &get7); +JOT(8, "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X\n", \ + get0, get1, get2, get3, get4, get5, get6, get7); +JOT(8, "....cf PAL_720x526: " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X\n", \ + 0x000, 0x000, 0x001, 0x000, 0x5A0, 0x005, 0x121, 0x001); +JOT(8, "....cf PAL_704x526: " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X\n", \ + 0x004, 0x000, 0x001, 0x000, 0x584, 0x005, 0x121, 0x001); +JOT(8, "....cf VGA_640x480: " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X, " \ + "0x%03X, 0x%03X\n", \ + 0x008, 0x000, 0x020, 0x000, 0x508, 0x005, 0x110, 0x001); +return 0; +} +/****************************************************************************/ +int +confirm_stream(struct usb_device *p) +{ +__u16 get2; +__u8 igot; + +GET(p, 0x0100, &igot); get2 = 0x80 & igot; +if (0x80 == get2) + JOT(8, "confirm_stream: OK\n"); +else + JOT(8, "confirm_stream: STUCK\n"); +return 0; +} +/****************************************************************************/ +int +setup_stk(struct usb_device *p) +{ +int i0; + +i0 = 0; +while (0xFFF != stk1160config[i0].reg) { + SET(p, stk1160config[i0].reg, stk1160config[i0].set); + i0++; + } + +write_300(p); + +return 0; +} +/****************************************************************************/ +int +setup_saa(struct usb_device *p) +{ +int i0, ir; + + +set2to78(p); + + +i0 = 0; +while (0xFF != saa7113config[i0].reg) { + ir = write_saa(p, saa7113config[i0].reg, saa7113config[i0].set); + i0++; + } +return 0; +} +/****************************************************************************/ +int +write_000(struct usb_device *p, __u16 set2, __u16 set0) +{ +__u8 igot0, igot2; + +GET(p, 0x0002, &igot2); +GET(p, 0x0000, &igot0); +SET(p, 0x0002, set2); +SET(p, 0x0000, set0); +return 0; +} +/****************************************************************************/ +int +write_saa(struct usb_device *p, __u16 reg0, __u16 set0) +{ +SET(p, 0x200, 0x00); +SET(p, 0x204, reg0); +SET(p, 0x205, set0); +SET(p, 0x200, 0x01); +return wait_i2c(p); +} +/****************************************************************************/ +/*--------------------------------------------------------------------------*/ +/* + * REGISTER 500: SETTING VALUE TO 0x008B READS FROM VT1612A (?) + * REGISTER 500: SETTING VALUE TO 0x008C WRITES TO VT1612A + * REGISTER 502: LEAST SIGNIFICANT BYTE OF VALUE TO SET + * REGISTER 503: MOST SIGNIFICANT BYTE OF VALUE TO SET + * REGISTER 504: TARGET ADDRESS ON VT1612A + */ +/*--------------------------------------------------------------------------*/ +int +write_vt(struct usb_device *p, __u16 reg0, __u16 set0) +{ +__u8 igot; +__u16 got502, got503; +__u16 set502, set503; + +SET(p, 0x0504, reg0); +SET(p, 0x0500, 0x008B); + +GET(p, 0x0502, &igot); got502 = (0xFF & igot); +GET(p, 0x0503, &igot); got503 = (0xFF & igot); + +JOT(16, "write_vt(., 0x%04X, 0x%04X): was 0x%04X\n", \ + reg0, set0, ((got503 << 8) | got502)); + +set502 = (0x00FF & set0); +set503 = ((0xFF00 & set0) >> 8); + +SET(p, 0x0504, reg0); +SET(p, 0x0502, set502); +SET(p, 0x0503, set503); +SET(p, 0x0500, 0x008C); + +return 0; +} +/****************************************************************************/ +/*--------------------------------------------------------------------------*/ +/* + * REGISTER 500: SETTING VALUE TO 0x008B READS FROM VT1612A (?) + * REGISTER 500: SETTING VALUE TO 0x008C WRITES TO VT1612A + * REGISTER 502: LEAST SIGNIFICANT BYTE OF VALUE TO GET + * REGISTER 503: MOST SIGNIFICANT BYTE OF VALUE TO GET + * REGISTER 504: TARGET ADDRESS ON VT1612A + */ +/*--------------------------------------------------------------------------*/ +int +read_vt(struct usb_device *p, __u16 reg0) +{ +__u8 igot; +__u16 got502, got503; + +SET(p, 0x0504, reg0); +SET(p, 0x0500, 0x008B); + +GET(p, 0x0502, &igot); got502 = (0xFF & igot); +GET(p, 0x0503, &igot); got503 = (0xFF & igot); + +JOT(16, "read_vt(., 0x%04X): has 0x%04X\n", reg0, ((got503 << 8) | got502)); + +return (got503 << 8) | got502; +} +/****************************************************************************/ +/*--------------------------------------------------------------------------*/ +/* + * THESE APPEAR TO HAVE NO EFFECT ON EITHER VIDEO OR AUDIO. + */ +/*--------------------------------------------------------------------------*/ +int +write_300(struct usb_device *p) +{ +SET(p, 0x300, 0x0012); +SET(p, 0x350, 0x002D); +SET(p, 0x351, 0x0001); +SET(p, 0x352, 0x0000); +SET(p, 0x353, 0x0000); +SET(p, 0x300, 0x0080); +return 0; +} +/****************************************************************************/ +/*--------------------------------------------------------------------------*/ +/* + * NOTE: THE FOLLOWING IS NOT CHECKED: + * REGISTER 0x0F, WHICH IS INVOLVED IN CHROMINANCE AUTOMATIC GAIN CONTROL. + */ +/*--------------------------------------------------------------------------*/ +int +check_saa(struct usb_device *p) +{ +int i0, ir, rc; +i0 = 0; + +rc = 0; +while (0xFF != saa7113config[i0].reg) { + if (0x0F == saa7113config[i0].reg) { + i0++; continue; + } + + ir = read_saa(p, saa7113config[i0].reg); + if (ir != saa7113config[i0].set) { + SAY("SAA register 0x%02X has 0x%02X, expected 0x%02X\n", \ + saa7113config[i0].reg, ir, saa7113config[i0].set); + rc--; + } + i0++; +} +if (-8 > rc) + return rc; +else + return 0; +} +/****************************************************************************/ +int +merit_saa(struct usb_device *p) +{ +int rc; + +rc = read_saa(p, 0x1F); +if ((0 > rc) || (0x02 & rc)) + return 1 ; +else + return 0; +} +/****************************************************************************/ +int +ready_saa(struct usb_device *p) +{ +int j, rc; +static int max = 10; + +j = 0; +while (max > j) { + rc = read_saa(p, 0x1F); + if (0 <= rc) { + if ((1 == (0x01 & rc))&&(0 == (0x40 & rc))) + break; + } + msleep(100); j++; +} +if (max == j) + return -1; +else { + if (0x20 & rc) + JOT(8, "hardware detects 60 Hz\n"); + else + JOT(8, "hardware detects 50 Hz\n"); + if (0x80 & rc) + JOT(8, "hardware detects interlacing\n"); + else + JOT(8, "hardware detects no interlacing\n"); +} +return 0; +} +/****************************************************************************/ +/*--------------------------------------------------------------------------*/ +/* + * NOTE: THE FOLLOWING ARE NOT CHECKED: + * REGISTERS 0x000, 0x002: FUNCTIONALITY IS NOT KNOWN + * REGISTER 0x100: ACCEPT ALSO (0x80 | stk1160config[.].set) + */ +/*--------------------------------------------------------------------------*/ +int +check_stk(struct usb_device *p) +{ +int i0, ir; +i0 = 0; +while (0xFFF != stk1160config[i0].reg) { + if (0x000 == stk1160config[i0].reg) { + i0++; continue; + } + if (0x002 == stk1160config[i0].reg) { + i0++; continue; + } + + ir = read_stk(p, stk1160config[i0].reg); + + if (0x100 == stk1160config[i0].reg) { + if ((ir != (0xFF & stk1160config[i0].set)) && \ + (ir != (0x80 | (0xFF & stk1160config[i0].set))) && \ + (0xFFFF != stk1160config[i0].set)) { + SAY("STK register 0x%03X has 0x%02X, " \ + "expected 0x%02X\n", \ + stk1160config[i0].reg, ir, \ + stk1160config[i0].set); + } + i0++; continue; + } + + if ((ir != (0xFF & stk1160config[i0].set)) && \ + (0xFFFF != stk1160config[i0].set)) { + SAY("STK register 0x%03X has 0x%02X, " \ + "expected 0x%02X\n", \ + stk1160config[i0].reg, ir, \ + stk1160config[i0].set); + } + i0++; + } +return 0; +} +/****************************************************************************/ +int +read_saa(struct usb_device *p, __u16 reg0) +{ +__u8 igot; + +SET(p, 0x208, reg0); +SET(p, 0x200, 0x20); +if (0 != wait_i2c(p)) + return -1; +igot = 0; +GET(p, 0x0209, &igot); +return igot; +} +/****************************************************************************/ +int +read_stk(struct usb_device *p, __u32 reg0) +{ +__u8 igot; + +igot = 0; +GET(p, reg0, &igot); +return igot; +} +/*****************************************************************************/ +/*---------------------------------------------------------------------------*/ +/* + * HARDWARE USERSPACE INPUT NUMBER PHYSICAL INPUT DRIVER input VALUE + * + * CVBS+S-VIDEO 0 or 1 CVBS 1 + * FOUR-CVBS 0 or 1 CVBS1 1 + * FOUR-CVBS 2 CVBS2 2 + * FOUR-CVBS 3 CVBS3 3 + * FOUR-CVBS 4 CVBS4 4 + * CVBS+S-VIDEO 5 S-VIDEO 5 + * + * WHEN 5==input THE ARGUMENT mode MUST ALSO BE SUPPLIED: + * + * mode 7 => GAIN TO BE SET EXPLICITLY USING REGISTER 0x05 (UNTESTED) + * mode 9 => USE AUTOMATIC GAIN CONTROL (DEFAULT) + * +*/ +/*---------------------------------------------------------------------------*/ +int +select_input(struct usb_device *p, int input, int mode) +{ + +stop_100(p); + +msleep(20); +switch (input) { +case 0: +case 1: { + SET(p, 0x0000, 0x0098); break; +} +case 2: { + SET(p, 0x0000, 0x0090); break; +} +case 3: { + SET(p, 0x0000, 0x0088); break; +} +case 4: { + SET(p, 0x0000, 0x0080); break; +} +case 5: { + if (9 != mode) + mode = 7; + switch (mode) { + case 7: + { + if (0 != write_saa(p, 0x02, 0x87)) { + SAY("ERROR: failed to set SAA " \ + "register 0x02 for input " \ + "%i\n", input); + } + if (0 != write_saa(p, 0x05, 0xFF)) { + SAY("ERROR: failed to set SAA " \ + "register 0x05 for input " \ + "%i\n", input); + } + break; + } + case 9: + { + if (0 != write_saa(p, 0x02, 0x89)) { + SAY("ERROR: failed to set SAA " \ + "register 0x02 for input " \ + "%i\n", input); + } + if (0 != write_saa(p, 0x05, 0x00)) { + SAY("ERROR: failed to set SAA " \ + "register 0x05 for input " \ + "%i\n", input); + } + break; + } + default: + { + SAY("MISTAKE: bad mode: %i\n", mode); + return -1; + } + } + if (0 != write_saa(p, 0x04, 0x00)) { + SAY("ERROR: failed to set SAA register 0x04 " \ + "for input %i\n", input); + } + if (0 != write_saa(p, 0x09, 0x80)) { + SAY("ERROR: failed to set SAA register 0x09 " \ + "for input %i\n", input); + } + break; +} +default: + { + SAY("ERROR: bad input: %i\n", input); + return -1; +} +} +msleep(20); +SET(p, 0x0002, 0x0093); +msleep(20); + +start_100(p); + +return 0; +} +/****************************************************************************/ +int +set_resolution(struct usb_device *p, \ + __u16 set0, __u16 set1, __u16 set2, __u16 set3) +{ +__u16 u0x0111, u0x0113, u0x0115, u0x0117; + +u0x0111 = ((0xFF00 & set0) >> 8); +u0x0113 = ((0xFF00 & set1) >> 8); +u0x0115 = ((0xFF00 & set2) >> 8); +u0x0117 = ((0xFF00 & set3) >> 8); + +SET(p, 0x0110, (0x00FF & set0)); +SET(p, 0x0111, u0x0111); +SET(p, 0x0112, (0x00FF & set1)); +SET(p, 0x0113, u0x0113); +SET(p, 0x0114, (0x00FF & set2)); +SET(p, 0x0115, u0x0115); +SET(p, 0x0116, (0x00FF & set3)); +SET(p, 0x0117, u0x0117); + +return 0; +} +/****************************************************************************/ +int +start_100(struct usb_device *p) +{ +__u16 get0; +__u8 igot; + +GET(p, 0x0100, &igot); get0 = igot; +msleep(0x1f4); +SET(p, 0x0100, (0x80 | get0)); +msleep(0x1f4); +return 0; +} +/****************************************************************************/ +int +stop_100(struct usb_device *p) +{ +__u16 get0; +__u8 igot; + +GET(p, 0x0100, &igot); get0 = igot; +msleep(0x1f4); +SET(p, 0x0100, (0x7F & get0)); +msleep(0x1f4); +return 0; +} +/****************************************************************************/ +/*--------------------------------------------------------------------------*/ +/* + * FUNCTION wait_i2c() RETURNS 0 ON SUCCESS +*/ +/*--------------------------------------------------------------------------*/ +int +wait_i2c(struct usb_device *p) +{ +__u16 get0; +__u8 igot; +const int max = 4; +int k; + +for (k = 0; k < max; k++) { + GET(p, 0x0201, &igot); get0 = igot; + switch (get0) { + case 0x04: + case 0x01: { + return 0; + } + case 0x00: { + msleep(10); + continue; + } + default: { + return get0 - 1; + } + } +} +return -1; +} +/****************************************************************************/ +int +regset(struct usb_device *pusb_device, __u16 index, __u16 value) +{ +__u16 igot; +int rc0, rc1; + +if (!pusb_device) + return -EFAULT; + +rc1 = 0; igot = 0; +rc0 = usb_control_msg(pusb_device, usb_sndctrlpipe(pusb_device, 0), \ + (__u8)0x01, \ + (__u8)(USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE), \ + (__u16)value, \ + (__u16)index, \ + (void *)NULL, \ + (__u16)0, \ + (int)500); + +#if defined(NOREADBACK) +# +#else +rc1 = usb_control_msg(pusb_device, usb_rcvctrlpipe(pusb_device, 0), \ + (__u8)0x00, \ + (__u8)(USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE), \ + (__u16)0x00, \ + (__u16)index, \ + (void *)&igot, \ + (__u16)sizeof(__u16), \ + (int)50000); +igot = 0xFF & igot; +switch (index) { +case 0x000: +case 0x500: +case 0x502: +case 0x503: +case 0x504: +case 0x506: +case 0x507: { + break; +} +case 0x204: +case 0x205: +case 0x350: +case 0x351: { + if (0 != igot) { + JOT(8, "unexpected 0x%02X for STK register 0x%03X\n", \ + igot, index); + } +break; +} +case 0x114: +case 0x116: { + if ((0xFF & value) != igot) { + JOT(8, "unexpected 0x%02X != 0x%02X " \ + "for STK register 0x%03X\n", \ + igot, value, index); + } +break; +} +case 0x200: { + if (0 == igot) + break; +} +default: { + if (value != igot) { + JOT(8, "unexpected 0x%02X != 0x%02X " \ + "for STK register 0x%03X\n", \ + igot, value, index); + } +break; +} +} +#endif /* ! NOREADBACK*/ + +return (0 > rc0) ? rc0 : rc1; +} +/*****************************************************************************/ +int +regget(struct usb_device *pusb_device, __u16 index, void *pvoid) +{ +int ir; + +if (!pusb_device) + return -EFAULT; + +ir = usb_control_msg(pusb_device, usb_rcvctrlpipe(pusb_device, 0), \ + (__u8)0x00, \ + (__u8)(USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE), \ + (__u16)0x00, \ + (__u16)index, \ + (void *)pvoid, \ + sizeof(__u8), \ + (int)50000); +return 0xFF & ir; +} +/*****************************************************************************/ +int +wakeup_device(struct usb_device *pusb_device) +{ +return usb_control_msg(pusb_device, usb_sndctrlpipe(pusb_device, 0), \ + (__u8)USB_REQ_SET_FEATURE, \ + (__u8)(USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE), \ + USB_DEVICE_REMOTE_WAKEUP, \ + (__u16)0, \ + (void *) NULL, \ + (__u16)0, \ + (int)50000); +} +/*****************************************************************************/ +/*---------------------------------------------------------------------------*/ +/* + * IMPORTANT: + * THE MESSAGE OF TYPE (USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) + * CAUSES MUTING IF THE VALUE 0x0100 IS SENT. + * TO ENABLE AUDIO THE VALUE 0x0200 MUST BE SENT. + */ +/*---------------------------------------------------------------------------*/ +int +audio_setup(struct easycap *peasycap) +{ +struct usb_device *pusb_device; +static __u8 request = 0x01; +static __u8 requesttype = \ + (__u8)(USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE); + +static __u16 value_unmute = 0x0200; +static __u16 index = 0x0301; + +static unsigned char buffer[1]; +static __u16 length = 1; +int rc; + +if (NULL == peasycap) + return -EFAULT; + +pusb_device = peasycap->pusb_device; +if (NULL == pusb_device) + return -EFAULT; + +JOT(8, "%02X %02X %02X %02X %02X %02X %02X %02X\n", \ + requesttype, request, \ + (0x00FF & value_unmute), \ + (0xFF00 & value_unmute) >> 8, \ + (0x00FF & index), \ + (0xFF00 & index) >> 8, \ + (0x00FF & length), \ + (0xFF00 & length) >> 8); + +buffer[0] = 0x01; + +rc = usb_control_msg(pusb_device, usb_sndctrlpipe(pusb_device, 0), \ + (__u8)request, \ + (__u8)requesttype, \ + (__u16)value_unmute, \ + (__u16)index, \ + (void *)&buffer[0], \ + (__u16)length, \ + (int)50000); + +JOT(8, "0x%02X=buffer\n", *((__u8 *) &buffer[0])); +if (rc != (int)length) + SAY("ERROR: usb_control_msg returned %i\n", rc); + +/*--------------------------------------------------------------------------*/ +/* + * REGISTER 500: SETTING VALUE TO 0x0094 RESETS AUDIO CONFIGURATION ??? + * REGISTER 506: ANALOGUE AUDIO ATTENTUATOR ??? + * FOR THE CVBS+S-VIDEO HARDWARE: + * SETTING VALUE TO 0x0000 GIVES QUIET SOUND. + * THE UPPER BYTE SEEMS TO HAVE NO EFFECT. + * FOR THE FOUR-CVBS HARDWARE: + * SETTING VALUE TO 0x0000 SEEMS TO HAVE NO EFFECT. + * REGISTER 507: ANALOGUE AUDIO PREAMPLIFIER ON/OFF ??? + * FOR THE CVBS-S-VIDEO HARDWARE: + * SETTING VALUE TO 0x0001 GIVES VERY LOUD, DISTORTED SOUND. + * THE UPPER BYTE SEEMS TO HAVE NO EFFECT. + */ +/*--------------------------------------------------------------------------*/ + +SET(pusb_device, 0x0500, 0x0094); + +SET(pusb_device, 0x0500, 0x008C); + +SET(pusb_device, 0x0506, 0x0001); +SET(pusb_device, 0x0507, 0x0000); + +if (false == peasycap->microphone) { + /*-------------------------------------------------------------------*/ + /* + * SELECT AUDIO SOURCE "LINE IN" AND SET DEFAULT GAIN TO 0dB. + */ + /*-------------------------------------------------------------------*/ + write_vt(pusb_device, 0x0002, 0x8000); + write_vt(pusb_device, 0x001C, 0x8000); + + write_vt(pusb_device, 0x000E, 0x0000); + write_vt(pusb_device, 0x0010, 0x0000); + write_vt(pusb_device, 0x0012, 0x8000); + write_vt(pusb_device, 0x0016, 0x0000); + + write_vt(pusb_device, 0x001A, 0x0404); + write_vt(pusb_device, 0x0002, 0x0000); + write_vt(pusb_device, 0x001C, 0x0000); +} else { + /*-------------------------------------------------------------------*/ + /* + * SELECT AUDIO SOURCE "MIC" AND SET DEFAULT GAIN TO 0 dB. + * + * REGISTER 0x000E CAN BE SET TO PROVIDE UP TO 34.5 dB ATTENTUATION, + * BUT THIS HAS NOT PROVED NECESSARY FOR THE FEW SIGNAL SOURCES + * TESTED HITHERTO. + */ + /*-------------------------------------------------------------------*/ + write_vt(pusb_device, 0x0006, 0x8000); + write_vt(pusb_device, 0x001C, 0x8000); + + write_vt(pusb_device, 0x000E, 0x0008); + + write_vt(pusb_device, 0x0010, 0x0000); + write_vt(pusb_device, 0x0012, 0x8000); + write_vt(pusb_device, 0x0016, 0x0000); + + write_vt(pusb_device, 0x001A, 0x0000); + write_vt(pusb_device, 0x0006, 0x0000); + write_vt(pusb_device, 0x001C, 0x0000); +} + +check_vt(pusb_device); + +return 0; +} +/*****************************************************************************/ +int +check_vt(struct usb_device *pusb_device) +{ +int igot; + +igot = read_vt(pusb_device, 0x0002); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x02\n"); +if (0x8000 & igot) + SAY("register 0x%02X muted\n", 0x02); + +igot = read_vt(pusb_device, 0x000E); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x0E\n"); +if (0x8000 & igot) + SAY("register 0x%02X muted\n", 0x0E); + +igot = read_vt(pusb_device, 0x0010); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x10\n"); +if (0x8000 & igot) + SAY("register 0x%02X muted\n", 0x10); + +igot = read_vt(pusb_device, 0x0012); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x12\n"); +if (0x8000 & igot) + SAY("register 0x%02X muted\n", 0x12); + +igot = read_vt(pusb_device, 0x0016); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x16\n"); +if (0x8000 & igot) + SAY("register 0x%02X muted\n", 0x16); + +igot = read_vt(pusb_device, 0x001A); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x1A\n"); +if (0x8000 & igot) + SAY("register 0x%02X muted\n", 0x1A); + +igot = read_vt(pusb_device, 0x001C); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x1C\n"); +if (0x8000 & igot) + SAY("register 0x%02X muted\n", 0x1C); + +return 0; +} +/*****************************************************************************/ +/*---------------------------------------------------------------------------*/ +/* + * NOTE: THIS DOES INCREASE THE VOLUME DRAMATICALLY: + * audio_gainset(pusb_device, 0x000F); + * + * IF 16<loud<31 VT1621A REGISTER 0x1C IS SET FOR POSITIVE GAIN. + * IF loud<=16 VT1621A REGISTER 0x1C IS SET FOR ZERO GAIN. + * THERE IS NEVER ANY (ADDITIONAL) ATTENUATION. + */ +/*---------------------------------------------------------------------------*/ +int +audio_gainset(struct usb_device *pusb_device, __s8 loud) +{ +int igot; +__u8 u8; +__u16 mute; + +if (16 > loud) + loud = 16; +u8 = 0x000F & (__u8)(loud - 16); + +write_vt(pusb_device, 0x0002, 0x8000); + +igot = read_vt(pusb_device, 0x001C); +if (0 > igot) { + SAY("ERROR: failed to read VT1612A register 0x1C\n"); + mute = 0x0000; +} else + mute = 0x8000 & ((unsigned int)igot); + +JOT(8, "0x%04X=(mute|u8|(u8<<8))\n", mute | u8 | (u8 << 8)); + +write_vt(pusb_device, 0x001C, 0x8000); +write_vt(pusb_device, 0x001C, (mute | u8 | (u8 << 8))); +write_vt(pusb_device, 0x0002, 0x0000); + +return 0; +} +/*****************************************************************************/ +int +audio_gainget(struct usb_device *pusb_device) +{ +int igot; + +igot = read_vt(pusb_device, 0x001C); +if (0 > igot) + SAY("ERROR: failed to read VT1612A register 0x1C\n"); +return igot; +} +/*****************************************************************************/ +int +set2to78(struct usb_device *p) +{ +int ir; + +msleep(20); +ir = regset(p, 0x0002, 0x0078); +if (0 > ir) + SAY("ERROR: failed to set register 0x0002 to 0x0078\n"); +msleep(20); +return ir; +} +/*****************************************************************************/ +int +set2to93(struct usb_device *p) +{ +int ir; + +msleep(20); +ir = regset(p, 0x0002, 0x0093); +if (0 > ir) + SAY("ERROR: failed to set register 0x0002 to 0x0078\n"); +msleep(20); +return ir; +} +/*****************************************************************************/ |