AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-26 15:40:53 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
5b5439652a
linux_dsm_epyc7002/drivers/media/video/tuner-simple.c
Mauro Carvalho Chehab fd3113e84e [PATCH] V4L: Miscellaneous fixes 
- Fixed some bttv card numbers.

- BTTV and SAA7134 version numbers incremented to reflect changes.

- pci_dma_supported() is called after pci_set_dma_mask() which
  already did check that for us. This patch removes the unneeded call to
  pci_dma_supported() at bttv-driver.c

- Ensure a sufficient I2C bus idle time between 2 messages for
  saa7134-i2c.c

- It is important to write at first to MO_GP3_IO for cx88-tvaudio.c

- Use try_to_freeze() instead of refrigerator at msp3400.c

- Recognizing the MFPE05-2 Tuner at tveeprom.c

- Add new parameter to help identify radio chipsets at tuner module:
  show_i2c=1 will show 16 reading bytes from detected tuners.

- BTTV does generate some Unimplemented IOCTL log at tuner module:
  0x40046d11(dir=1,tp=0x6d,nr=17,sz=4) means that it is sending
  MSP3400 calls to non-msp3400 tuners. Warning eliminated.
  VIDIOSAUDIO is also called, so debug messages updated. It is still
  requiring IOCTL implementation.

- Added two more tuners.

- Add support for the SVideo input on the GDI Black Gold.

Signed-off-by: Peter Missel <peter.missel@onlinehome.de>
Signed-off-by: Graham Bevan <graham.bevan@ntlworld.com>
Signed-off-by: Torsten Seeboth <Torsten.Seeboth@t-online.de>
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t.online.de>
Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-01 19:13:59 -07:00

511 lines
16 KiB
C
Raw Blame History

/*
* $Id: tuner-simple.c,v 1.43 2005/07/28 18:41:21 mchehab Exp $
*
* i2c tv tuner chip device driver
* controls all those simple 4-control-bytes style tuners.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <media/tuner.h>
/* ---------------------------------------------------------------------- */
/* tv standard selection for Temic 4046 FM5
this value takes the low bits of control byte 2
from datasheet Rev.01, Feb.00
standard BG I L L2 D
picture IF 38.9 38.9 38.9 33.95 38.9
sound 1 33.4 32.9 32.4 40.45 32.4
sound 2 33.16
NICAM 33.05 32.348 33.05 33.05
*/
#define TEMIC_SET_PAL_I 0x05
#define TEMIC_SET_PAL_DK 0x09
#define TEMIC_SET_PAL_L 0x0a // SECAM ?
#define TEMIC_SET_PAL_L2 0x0b // change IF !
#define TEMIC_SET_PAL_BG 0x0c
/* tv tuner system standard selection for Philips FQ1216ME
this value takes the low bits of control byte 2
from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
standard BG DK I L L`
picture carrier 38.90 38.90 38.90 38.90 33.95
colour 34.47 34.47 34.47 34.47 38.38
sound 1 33.40 32.40 32.90 32.40 40.45
sound 2 33.16 - - - -
NICAM 33.05 33.05 32.35 33.05 39.80
*/
#define PHILIPS_SET_PAL_I 0x01 /* Bit 2 always zero !*/
#define PHILIPS_SET_PAL_BGDK 0x09
#define PHILIPS_SET_PAL_L2 0x0a
#define PHILIPS_SET_PAL_L 0x0b
/* system switching for Philips FI1216MF MK2
from datasheet "1996 Jul 09",
standard BG L L'
picture carrier 38.90 38.90 33.95
colour 34.47 34.37 38.38
sound 1 33.40 32.40 40.45
sound 2 33.16 - -
NICAM 33.05 33.05 39.80
*/
#define PHILIPS_MF_SET_BG 0x01 /* Bit 2 must be zero, Bit 3 is system output */
#define PHILIPS_MF_SET_PAL_L 0x03 // France
#define PHILIPS_MF_SET_PAL_L2 0x02 // L'
/* Control byte */
#define TUNER_RATIO_MASK 0x06 /* Bit cb1:cb2 */
#define TUNER_RATIO_SELECT_50 0x00
#define TUNER_RATIO_SELECT_32 0x02
#define TUNER_RATIO_SELECT_166 0x04
#define TUNER_RATIO_SELECT_62 0x06
#define TUNER_CHARGE_PUMP 0x40 /* Bit cb6 */
/* Status byte */
#define TUNER_POR 0x80
#define TUNER_FL 0x40
#define TUNER_MODE 0x38
#define TUNER_AFC 0x07
#define TUNER_SIGNAL 0x07
#define TUNER_STEREO 0x10
#define TUNER_PLL_LOCKED 0x40
#define TUNER_STEREO_MK3 0x04
/* ---------------------------------------------------------------------- */
struct tunertype
{
char *name;
unsigned char Vendor;
unsigned char Type;
unsigned short thresh1; /* band switch VHF_LO <=> VHF_HI */
unsigned short thresh2; /* band switch VHF_HI <=> UHF */
unsigned char VHF_L;
unsigned char VHF_H;
unsigned char UHF;
unsigned char config;
unsigned short IFPCoff; /* 622.4=16*38.90 MHz PAL,
732 =16*45.75 NTSCi,
940 =16*58.75 NTSC-Japan
704 =16*44 ATSC */
};
/*
* The floats in the tuner struct are computed at compile time
* by gcc and cast back to integers. Thus we don't violate the
* "no float in kernel" rule.
*/
static struct tunertype tuners[] = {
{ "Temic PAL (4002 FH5)", TEMIC, PAL,
16*140.25,16*463.25,0x02,0x04,0x01,0x8e,623},
{ "Philips PAL_I (FI1246 and compatibles)", Philips, PAL_I,
16*140.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
{ "Philips NTSC (FI1236,FM1236 and compatibles)", Philips, NTSC,
16*157.25,16*451.25,0xA0,0x90,0x30,0x8e,732},
{ "Philips (SECAM+PAL_BG) (FI1216MF, FM1216MF, FR1216MF)", Philips, SECAM,
16*168.25,16*447.25,0xA7,0x97,0x37,0x8e,623},
{ "NoTuner", NoTuner, NOTUNER,
0,0,0x00,0x00,0x00,0x00,0x00},
{ "Philips PAL_BG (FI1216 and compatibles)", Philips, PAL,
16*168.25,16*447.25,0xA0,0x90,0x30,0x8e,623},
{ "Temic NTSC (4032 FY5)", TEMIC, NTSC,
16*157.25,16*463.25,0x02,0x04,0x01,0x8e,732},
{ "Temic PAL_I (4062 FY5)", TEMIC, PAL_I,
16*170.00,16*450.00,0x02,0x04,0x01,0x8e,623},
{ "Temic NTSC (4036 FY5)", TEMIC, NTSC,
16*157.25,16*463.25,0xa0,0x90,0x30,0x8e,732},
{ "Alps HSBH1", TEMIC, NTSC,
16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
{ "Alps TSBE1",TEMIC,PAL,
16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
{ "Alps TSBB5", Alps, PAL_I, /* tested (UK UHF) with Modulartech MM205 */
16*133.25,16*351.25,0x01,0x02,0x08,0x8e,632},
{ "Alps TSBE5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
16*133.25,16*351.25,0x01,0x02,0x08,0x8e,622},
{ "Alps TSBC5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
16*133.25,16*351.25,0x01,0x02,0x08,0x8e,608},
{ "Temic PAL_BG (4006FH5)", TEMIC, PAL,
16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
{ "Alps TSCH6",Alps,NTSC,
16*137.25,16*385.25,0x14,0x12,0x11,0x8e,732},
{ "Temic PAL_DK (4016 FY5)",TEMIC,PAL,
16*168.25,16*456.25,0xa0,0x90,0x30,0x8e,623},
{ "Philips NTSC_M (MK2)",Philips,NTSC,
16*160.00,16*454.00,0xa0,0x90,0x30,0x8e,732},
{ "Temic PAL_I (4066 FY5)", TEMIC, PAL_I,
16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
{ "Temic PAL* auto (4006 FN5)", TEMIC, PAL,
16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
{ "Temic PAL_BG (4009 FR5) or PAL_I (4069 FR5)", TEMIC, PAL,
16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
{ "Temic NTSC (4039 FR5)", TEMIC, NTSC,
16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
{ "Temic PAL/SECAM multi (4046 FM5)", TEMIC, PAL,
16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
{ "Philips PAL_DK (FI1256 and compatibles)", Philips, PAL,
16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
{ "Philips PAL/SECAM multi (FQ1216ME)", Philips, PAL,
16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
{ "LG PAL_I+FM (TAPC-I001D)", LGINNOTEK, PAL_I,
16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
{ "LG PAL_I (TAPC-I701D)", LGINNOTEK, PAL_I,
16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
{ "LG NTSC+FM (TPI8NSR01F)", LGINNOTEK, NTSC,
16*210.00,16*497.00,0xa0,0x90,0x30,0x8e,732},
{ "LG PAL_BG+FM (TPI8PSB01D)", LGINNOTEK, PAL,
16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
{ "LG PAL_BG (TPI8PSB11D)", LGINNOTEK, PAL,
16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
{ "Temic PAL* auto + FM (4009 FN5)", TEMIC, PAL,
16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
{ "SHARP NTSC_JP (2U5JF5540)", SHARP, NTSC, /* 940=16*58.75 NTSC@Japan */
16*137.25,16*317.25,0x01,0x02,0x08,0x8e,940 },
{ "Samsung PAL TCPM9091PD27", Samsung, PAL, /* from sourceforge v3tv */
16*169,16*464,0xA0,0x90,0x30,0x8e,623},
{ "MT20xx universal", Microtune,PAL|NTSC,
/* see mt20xx.c for details */ },
{ "Temic PAL_BG (4106 FH5)", TEMIC, PAL,
16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
{ "Temic PAL_DK/SECAM_L (4012 FY5)", TEMIC, PAL,
16*140.25, 16*463.25, 0x02,0x04,0x01,0x8e,623},
{ "Temic NTSC (4136 FY5)", TEMIC, NTSC,
16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
{ "LG PAL (newer TAPC series)", LGINNOTEK, PAL,
16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,623},
{ "Philips PAL/SECAM multi (FM1216ME MK3)", Philips, PAL,
16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
{ "LG NTSC (newer TAPC series)", LGINNOTEK, NTSC,
16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,732},
{ "HITACHI V7-J180AT", HITACHI, NTSC,
16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,940 },
{ "Philips PAL_MK (FI1216 MK)", Philips, PAL,
16*140.25,16*463.25,0x01,0xc2,0xcf,0x8e,623},
{ "Philips 1236D ATSC/NTSC daul in",Philips,ATSC,
16*157.25,16*454.00,0xa0,0x90,0x30,0x8e,732},
{ "Philips NTSC MK3 (FM1236MK3 or FM1236/F)", Philips, NTSC,
16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
{ "Philips 4 in 1 (ATI TV Wonder Pro/Conexant)", Philips, NTSC,
16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
{ "Microtune 4049 FM5",Microtune,PAL,
16*141.00,16*464.00,0xa0,0x90,0x30,0x8e,623},
{ "Panasonic VP27s/ENGE4324D", Panasonic, NTSC,
16*160.00,16*454.00,0x01,0x02,0x08,0xce,940},
{ "LG NTSC (TAPE series)", LGINNOTEK, NTSC,
16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
{ "Tenna TNF 8831 BGFF)", Philips, PAL,
16*161.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
{ "Microtune 4042 FI5 ATSC/NTSC dual in", Microtune, NTSC,
16*162.00,16*457.00,0xa2,0x94,0x31,0x8e,732},
{ "TCL 2002N", TCL, NTSC,
16*172.00,16*448.00,0x01,0x02,0x08,0x8e,732},
{ "Philips PAL/SECAM_D (FM 1256 I-H3)", Philips, PAL,
16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
{ "Thomson DDT 7610 (ATSC/NTSC)", THOMSON, ATSC,
16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
{ "Philips FQ1286", Philips, NTSC,
16*160.00,16*454.00,0x41,0x42,0x04,0x8e,940}, // UHF band untested
{ "tda8290+75", Philips,PAL|NTSC,
/* see tda8290.c for details */ },
{ "LG PAL (TAPE series)", LGINNOTEK, PAL,
16*170.00, 16*450.00, 0x01,0x02,0x08,0xce,623},
{ "Philips PAL/SECAM multi (FQ1216AME MK4)", Philips, PAL,
16*160.00,16*442.00,0x01,0x02,0x04,0xce,623 },
{ "Philips FQ1236A MK4", Philips, NTSC,
16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
{ "Ymec TVision TVF-8531MF/8831MF/8731MF", Philips, NTSC,
16*160.00,16*454.00,0xa0,0x90,0x30,0x8e,732},
{ "Ymec TVision TVF-5533MF", Philips, NTSC,
16*160.00,16*454.00,0x01,0x02,0x04,0x8e,732},
{ "Thomson DDT 7611 (ATSC/NTSC)", THOMSON, ATSC,
16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
{ "Tena TNF9533-D/IF/TNF9533-B/DF", Philips, PAL,
16*160.25,16*464.25,0x01,0x02,0x04,0x8e,623},
{ "Philips TEA5767HN FM Radio", Philips, RADIO,
/* see tea5767.c for details */},
{ "Philips FMD1216ME MK3 Hybrid Tuner", Philips, PAL,
16*160.00,16*442.00,0x51,0x52,0x54,0x86,623 },
{ "LG TDVS-H062F/TUA6034", LGINNOTEK, NTSC,
16*160.00,16*455.00,0x01,0x02,0x04,0x8e,732},
{ "Ymec TVF66T5-B/DFF", Philips, PAL,
16*160.25,16*464.25,0x01,0x02,0x08,0x8e,623},
};
unsigned const int tuner_count = ARRAY_SIZE(tuners);
/* ---------------------------------------------------------------------- */
static int tuner_getstatus(struct i2c_client *c)
{
unsigned char byte;
if (1 != i2c_master_recv(c,&byte,1))
return 0;
return byte;
}
static int tuner_signal(struct i2c_client *c)
{
return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
}
static int tuner_stereo(struct i2c_client *c)
{
int stereo, status;
struct tuner *t = i2c_get_clientdata(c);
status = tuner_getstatus (c);
switch (t->type) {
case TUNER_PHILIPS_FM1216ME_MK3:
case TUNER_PHILIPS_FM1236_MK3:
case TUNER_PHILIPS_FM1256_IH3:
stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
break;
default:
stereo = status & TUNER_STEREO;
}
return stereo;
}
/* ---------------------------------------------------------------------- */
static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
{
struct tuner *t = i2c_get_clientdata(c);
u8 config;
u16 div;
struct tunertype *tun;
unsigned char buffer[4];
int rc;
tun = &tuners[t->type];
if (freq < tun->thresh1) {
config = tun->VHF_L;
tuner_dbg("tv: VHF lowrange\n");
} else if (freq < tun->thresh2) {
config = tun->VHF_H;
tuner_dbg("tv: VHF high range\n");
} else {
config = tun->UHF;
tuner_dbg("tv: UHF range\n");
}
/* tv norm specific stuff for multi-norm tuners */
switch (t->type) {
case TUNER_PHILIPS_SECAM: // FI1216MF
/* 0x01 -> ??? no change ??? */
/* 0x02 -> PAL BDGHI / SECAM L */
/* 0x04 -> ??? PAL others / SECAM others ??? */
config &= ~0x02;
if (t->std & V4L2_STD_SECAM)
config |= 0x02;
break;
case TUNER_TEMIC_4046FM5:
config &= ~0x0f;
if (t->std & V4L2_STD_PAL_BG) {
config |= TEMIC_SET_PAL_BG;
} else if (t->std & V4L2_STD_PAL_I) {
config |= TEMIC_SET_PAL_I;
} else if (t->std & V4L2_STD_PAL_DK) {
config |= TEMIC_SET_PAL_DK;
} else if (t->std & V4L2_STD_SECAM_L) {
config |= TEMIC_SET_PAL_L;
}
break;
case TUNER_PHILIPS_FQ1216ME:
config &= ~0x0f;
if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
config |= PHILIPS_SET_PAL_BGDK;
} else if (t->std & V4L2_STD_PAL_I) {
config |= PHILIPS_SET_PAL_I;
} else if (t->std & V4L2_STD_SECAM_L) {
config |= PHILIPS_SET_PAL_L;
}
break;
case TUNER_PHILIPS_ATSC:
/* 0x00 -> ATSC antenna input 1 */
/* 0x01 -> ATSC antenna input 2 */
/* 0x02 -> NTSC antenna input 1 */
/* 0x03 -> NTSC antenna input 2 */
config &= ~0x03;
if (!(t->std & V4L2_STD_ATSC))
config |= 2;
/* FIXME: input */
break;
case TUNER_MICROTUNE_4042FI5:
/* Set the charge pump for fast tuning */
tun->config |= TUNER_CHARGE_PUMP;
break;
}
/*
* Philips FI1216MK2 remark from specification :
* for channel selection involving band switching, and to ensure
* smooth tuning to the desired channel without causing
* unnecessary charge pump action, it is recommended to consider
* the difference between wanted channel frequency and the
* current channel frequency. Unnecessary charge pump action
* will result in very low tuning voltage which may drive the
* oscillator to extreme conditions.
*
* Progfou: specification says to send config data before
* frequency in case (wanted frequency < current frequency).
*/
div=freq + tun->IFPCoff;
if (t->type == TUNER_PHILIPS_SECAM && freq < t->freq) {
buffer[0] = tun->config;
buffer[1] = config;
buffer[2] = (div>>8) & 0x7f;
buffer[3] = div & 0xff;
} else {
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
buffer[2] = tun->config;
buffer[3] = config;
}
tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
buffer[0],buffer[1],buffer[2],buffer[3]);
if (4 != (rc = i2c_master_send(c,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
if (t->type == TUNER_MICROTUNE_4042FI5) {
// FIXME - this may also work for other tuners
unsigned long timeout = jiffies + msecs_to_jiffies(1);
u8 status_byte = 0;
/* Wait until the PLL locks */
for (;;) {
if (time_after(jiffies,timeout))
return;
if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
break;
}
if (status_byte & TUNER_PLL_LOCKED)
break;
udelay(10);
}
/* Set the charge pump for optimized phase noise figure */
tun->config &= ~TUNER_CHARGE_PUMP;
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
buffer[2] = tun->config;
buffer[3] = config;
tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
buffer[0],buffer[1],buffer[2],buffer[3]);
if (4 != (rc = i2c_master_send(c,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
}
}
static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
{
struct tunertype *tun;
struct tuner *t = i2c_get_clientdata(c);
unsigned char buffer[4];
unsigned div;
int rc;
tun = &tuners[t->type];
div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
buffer[2] = (tun->config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
switch (t->type) {
case TUNER_TENA_9533_DI:
case TUNER_YMEC_TVF_5533MF:
tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
return;
case TUNER_PHILIPS_FM1216ME_MK3:
case TUNER_PHILIPS_FM1236_MK3:
case TUNER_PHILIPS_FMD1216ME_MK3:
buffer[3] = 0x19;
break;
case TUNER_PHILIPS_FM1256_IH3:
div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
buffer[3] = 0x19;
break;
case TUNER_LG_PAL_FM:
buffer[3] = 0xa5;
break;
default:
buffer[3] = 0xa4;
break;
}
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
buffer[0],buffer[1],buffer[2],buffer[3]);
if (4 != (rc = i2c_master_send(c,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
}
int default_tuner_init(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
tuner_info("type set to %d (%s)\n",
t->type, tuners[t->type].name);
strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
t->tv_freq = default_set_tv_freq;
t->radio_freq = default_set_radio_freq;
t->has_signal = tuner_signal;
t->is_stereo = tuner_stereo;
return 0;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
Reference in New Issue View Git Blame Copy Permalink