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linux_dsm_epyc7002/drivers/media/pci/bt8xx/bttv-audio-hook.c
Mauro Carvalho Chehab 3192e00645 [media] bttv: fix audio hooks 
as reported by smatch:
	drivers/media/pci/bt8xx/bttv-audio-hook.c:201 lt9415_audio() warn: bitwise AND condition is false here
	drivers/media/pci/bt8xx/bttv-audio-hook.c:241 winfast2000_audio() warn: bitwise AND condition is false here
	drivers/media/pci/bt8xx/bttv-audio-hook.c:276 pvbt878p9b_audio() warn: bitwise AND condition is false here
	drivers/media/pci/bt8xx/bttv-audio-hook.c:307 fv2000s_audio() warn: bitwise AND condition is false here
	drivers/media/pci/bt8xx/bttv-audio-hook.c:334 windvr_audio() warn: bitwise AND condition is false here
	drivers/media/pci/bt8xx/bttv-audio-hook.c:371 adtvk503_audio() warn: bitwise AND condition is false here

there are some serious issues at the audio hook implementation.

They're not following what's specified at the DocBook:
	http://linuxtv.org/downloads/v4l-dvb-apis/vidioc-g-tuner.html#tuner-audmode

Basically, it was assuming that the audmode (V4L2_TUNER_MODE_foo)
is a variable with a bit maskk. However, it isn't.

The bitmask only applies to rxsubchans field (V4L2_TUNER_SUB_foo).

As the code is also too complex, and not all hooks were returning
both audmode and rxsubchans to a VIDIOC_G_TUNER, rewrite the
functions, in order to fix both for get and set tuner ioctls.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-05-01 06:24:32 -03:00

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/*
* Handlers for board audio hooks, splitted from bttv-cards
*
* Copyright (c) 2006 Mauro Carvalho Chehab (mchehab@infradead.org)
* This code is placed under the terms of the GNU General Public License
*/
#include "bttv-audio-hook.h"
#include <linux/delay.h>
/* ----------------------------------------------------------------------- */
/* winview */
void winview_volume(struct bttv *btv, __u16 volume)
{
/* PT2254A programming Jon Tombs, jon@gte.esi.us.es */
int bits_out, loops, vol, data;
/* 32 levels logarithmic */
vol = 32 - ((volume>>11));
/* units */
bits_out = (PT2254_DBS_IN_2>>(vol%5));
/* tens */
bits_out |= (PT2254_DBS_IN_10>>(vol/5));
bits_out |= PT2254_L_CHANNEL | PT2254_R_CHANNEL;
data = gpio_read();
data &= ~(WINVIEW_PT2254_CLK| WINVIEW_PT2254_DATA|
WINVIEW_PT2254_STROBE);
for (loops = 17; loops >= 0 ; loops--) {
if (bits_out & (1<<loops))
data |= WINVIEW_PT2254_DATA;
else
data &= ~WINVIEW_PT2254_DATA;
gpio_write(data);
udelay(5);
data |= WINVIEW_PT2254_CLK;
gpio_write(data);
udelay(5);
data &= ~WINVIEW_PT2254_CLK;
gpio_write(data);
}
data |= WINVIEW_PT2254_STROBE;
data &= ~WINVIEW_PT2254_DATA;
gpio_write(data);
udelay(10);
data &= ~WINVIEW_PT2254_STROBE;
gpio_write(data);
}
/* ----------------------------------------------------------------------- */
/* mono/stereo control for various cards (which don't use i2c chips but */
/* connect something to the GPIO pins */
void gvbctv3pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int con;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
gpio_inout(0x300, 0x300);
switch (t->audmode) {
case V4L2_TUNER_MODE_LANG1:
default:
con = 0x000;
break;
case V4L2_TUNER_MODE_LANG2:
con = 0x300;
break;
case V4L2_TUNER_MODE_STEREO:
con = 0x200;
break;
}
gpio_bits(0x300, con);
}
void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int val, con;
if (btv->radio_user)
return;
val = gpio_read();
if (set) {
switch (t->audmode) {
case V4L2_TUNER_MODE_LANG2:
con = 0x300;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
con = 0x100;
break;
default:
con = 0x000;
break;
}
if (con != (val & 0x300)) {
gpio_bits(0x300, con);
if (bttv_gpio)
bttv_gpio_tracking(btv, "gvbctv5pci");
}
} else {
switch (val & 0x70) {
case 0x10:
t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
break;
case 0x30:
t->rxsubchans = V4L2_TUNER_SUB_LANG2;
t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
break;
case 0x50:
t->rxsubchans = V4L2_TUNER_SUB_LANG1;
t->audmode = V4L2_TUNER_MODE_LANG1_LANG2;
break;
case 0x60:
t->rxsubchans = V4L2_TUNER_SUB_STEREO;
t->audmode = V4L2_TUNER_MODE_STEREO;
break;
case 0x70:
t->rxsubchans = V4L2_TUNER_SUB_MONO;
t->audmode = V4L2_TUNER_MODE_MONO;
break;
default:
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
t->audmode = V4L2_TUNER_MODE_LANG1;
}
}
}
/*
* Mario Medina Nussbaum <medisoft@alohabbs.org.mx>
* I discover that on BT848_GPIO_DATA address a byte 0xcce enable stereo,
* 0xdde enables mono and 0xccd enables sap
*
* Petr Vandrovec <VANDROVE@vc.cvut.cz>
* P.S.: At least mask in line above is wrong - GPIO pins 3,2 select
* input/output sound connection, so both must be set for output mode.
*
* Looks like it's needed only for the "tvphone", the "tvphone 98"
* handles this with a tda9840
*
*/
void avermedia_tvphone_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
int val;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
switch (t->audmode) {
case V4L2_TUNER_MODE_LANG2: /* SAP */
val = 0x02;
break;
case V4L2_TUNER_MODE_STEREO:
val = 0x01;
break;
default:
return;
}
gpio_bits(0x03, val);
if (bttv_gpio)
bttv_gpio_tracking(btv, "avermedia");
}
void avermedia_tv_stereo_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
int val = 0;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
switch (t->audmode) {
case V4L2_TUNER_MODE_LANG2: /* SAP */
val = 0x01;
break;
case V4L2_TUNER_MODE_STEREO:
val = 0x02;
break;
default:
val = 0;
break;
}
btaor(val, ~0x03, BT848_GPIO_DATA);
if (bttv_gpio)
bttv_gpio_tracking(btv, "avermedia");
}
/* Lifetec 9415 handling */
void lt9415_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
int val = 0;
if (gpio_read() & 0x4000) {
t->audmode = V4L2_TUNER_MODE_MONO;
return;
}
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
switch (t->audmode) {
case V4L2_TUNER_MODE_LANG2: /* A2 SAP */
val = 0x0080;
break;
case V4L2_TUNER_MODE_STEREO: /* A2 stereo */
val = 0x0880;
break;
default:
val = 0;
break;
}
gpio_bits(0x0880, val);
if (bttv_gpio)
bttv_gpio_tracking(btv, "lt9415");
}
/* TDA9821 on TerraTV+ Bt848, Bt878 */
void terratv_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int con = 0;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
gpio_inout(0x180000, 0x180000);
switch (t->audmode) {
case V4L2_TUNER_MODE_LANG2:
con = 0x080000;
break;
case V4L2_TUNER_MODE_STEREO:
con = 0x180000;
break;
default:
con = 0;
break;
}
gpio_bits(0x180000, con);
if (bttv_gpio)
bttv_gpio_tracking(btv, "terratv");
}
void winfast2000_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned long val;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
/*btor (0xc32000, BT848_GPIO_OUT_EN);*/
switch (t->audmode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
val = 0x420000;
break;
case V4L2_TUNER_MODE_LANG2: /* SAP */
val = 0x410000;
break;
case V4L2_TUNER_MODE_STEREO:
val = 0x020000;
break;
default:
return;
}
gpio_bits(0x430000, val);
if (bttv_gpio)
bttv_gpio_tracking(btv, "winfast2000");
}
/*
* Dariusz Kowalewski <darekk@automex.pl>
* sound control for Prolink PV-BT878P+9B (PixelView PlayTV Pro FM+NICAM
* revision 9B has on-board TDA9874A sound decoder).
*
* Note: There are card variants without tda9874a. Forcing the "stereo sound route"
* will mute this cards.
*/
void pvbt878p9b_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int val = 0;
if (btv->radio_user)
return;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
switch (t->audmode) {
case V4L2_TUNER_MODE_MONO:
val = 0x01;
break;
case V4L2_TUNER_MODE_LANG1:
case V4L2_TUNER_MODE_LANG2:
case V4L2_TUNER_MODE_STEREO:
val = 0x02;
break;
default:
return;
}
gpio_bits(0x03, val);
if (bttv_gpio)
bttv_gpio_tracking(btv, "pvbt878p9b");
}
/*
* Dariusz Kowalewski <darekk@automex.pl>
* sound control for FlyVideo 2000S (with tda9874 decoder)
* based on pvbt878p9b_audio() - this is not tested, please fix!!!
*/
void fv2000s_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int val;
if (btv->radio_user)
return;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
switch (t->audmode) {
case V4L2_TUNER_MODE_MONO:
val = 0x0000;
break;
case V4L2_TUNER_MODE_LANG1:
case V4L2_TUNER_MODE_LANG2:
case V4L2_TUNER_MODE_STEREO:
val = 0x1080; /*-dk-???: 0x0880, 0x0080, 0x1800 ... */
break;
default:
return;
}
gpio_bits(0x1800, val);
if (bttv_gpio)
bttv_gpio_tracking(btv, "fv2000s");
}
/*
* sound control for Canopus WinDVR PCI
* Masaki Suzuki <masaki@btree.org>
*/
void windvr_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned long val;
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
switch (t->audmode) {
case V4L2_TUNER_MODE_MONO:
val = 0x040000;
break;
case V4L2_TUNER_MODE_LANG2:
val = 0x100000;
break;
default:
return;
}
gpio_bits(0x140000, val);
if (bttv_gpio)
bttv_gpio_tracking(btv, "windvr");
}
/*
* sound control for AD-TVK503
* Hiroshi Takekawa <sian@big.or.jp>
*/
void adtvk503_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int con = 0xffffff;
/* btaor(0x1e0000, ~0x1e0000, BT848_GPIO_OUT_EN); */
if (!set) {
/* Not much to do here */
t->audmode = V4L2_TUNER_MODE_LANG1;
t->rxsubchans = V4L2_TUNER_SUB_MONO |
V4L2_TUNER_SUB_STEREO |
V4L2_TUNER_SUB_LANG1 |
V4L2_TUNER_SUB_LANG2;
return;
}
/* btor(***, BT848_GPIO_OUT_EN); */
switch (t->audmode) {
case V4L2_TUNER_MODE_LANG1:
con = 0x00000000;
break;
case V4L2_TUNER_MODE_LANG2:
con = 0x00180000;
break;
case V4L2_TUNER_MODE_STEREO:
con = 0x00000000;
break;
case V4L2_TUNER_MODE_MONO:
con = 0x00060000;
break;
default:
return;
}
gpio_bits(0x1e0000, con);
if (bttv_gpio)
bttv_gpio_tracking(btv, "adtvk503");
}
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