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[media] bttv: fix audio hooks

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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>
This commit is contained in:
Mauro Carvalho Chehab 2015-04-29 20:06:07 -03:00
parent b674ac290e
commit 3192e00645
1 changed files with 275 additions and 168 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

443
drivers/media/pci/bt8xx/bttv-audio-hook.c
View file

@ -54,23 +54,33 @@ void winview_volume(struct bttv *btv, __u16 volume)
void gvbctv3pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int con = 0;
unsigned int con;
if (set) {
gpio_inout(0x300, 0x300);
if (t->audmode & V4L2_TUNER_MODE_LANG1)
con = 0x000;
if (t->audmode & V4L2_TUNER_MODE_LANG2)
con = 0x300;
if (t->audmode & V4L2_TUNER_MODE_STEREO)
con = 0x200;
/* if (t->audmode & V4L2_TUNER_MODE_MONO)
* con = 0x100; */
gpio_bits(0x300, con);
} else {
t->audmode = V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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)
@ -82,47 +92,51 @@ void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
val = gpio_read();
if (set) {
con = 0x000;
if (t->audmode & V4L2_TUNER_MODE_LANG2) {
if (t->audmode & V4L2_TUNER_MODE_LANG1) {
/* LANG1 + LANG2 */
con = 0x100;
}
else {
/* LANG2 */
con = 0x300;
}
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");
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;
}
t->audmode = V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
}
}
@ -142,23 +156,32 @@ void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
void avermedia_tvphone_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
int val = 0;
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;
if (set) {
if (t->audmode & V4L2_TUNER_MODE_LANG2) /* SAP */
val = 0x02;
if (t->audmode & V4L2_TUNER_MODE_STEREO)
val = 0x01;
if (val) {
gpio_bits(0x03,val);
if (bttv_gpio)
bttv_gpio_tracking(btv,"avermedia");
}
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1;
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");
}
@ -166,19 +189,31 @@ void avermedia_tv_stereo_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
int val = 0;
if (set) {
if (t->audmode & V4L2_TUNER_MODE_LANG2) /* SAP */
val = 0x01;
if (t->audmode & V4L2_TUNER_MODE_STEREO) /* STEREO */
val = 0x02;
btaor(val, ~0x03, BT848_GPIO_DATA);
if (bttv_gpio)
bttv_gpio_tracking(btv,"avermedia");
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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 */
@ -192,23 +227,32 @@ void lt9415_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
return;
}
if (set) {
if (t->audmode & V4L2_TUNER_MODE_LANG2) /* A2 SAP */
val = 0x0080;
if (t->audmode & V4L2_TUNER_MODE_STEREO) /* A2 stereo */
val = 0x0880;
if ((t->audmode & V4L2_TUNER_MODE_LANG1) ||
(t->audmode & V4L2_TUNER_MODE_MONO))
val = 0;
gpio_bits(0x0880, val);
if (bttv_gpio)
bttv_gpio_tracking(btv,"lt9415");
} else {
/* autodetect doesn't work with this card :-( */
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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 */
@ -216,45 +260,69 @@ void terratv_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int con = 0;
if (set) {
gpio_inout(0x180000,0x180000);
if (t->audmode & V4L2_TUNER_MODE_LANG2)
con = 0x080000;
if (t->audmode & V4L2_TUNER_MODE_STEREO)
con = 0x180000;
gpio_bits(0x180000, con);
if (bttv_gpio)
bttv_gpio_tracking(btv,"terratv");
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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 = 0;
unsigned long val;
if (set) {
/*btor (0xc32000, BT848_GPIO_OUT_EN);*/
if (t->audmode & V4L2_TUNER_MODE_MONO) /* Mono */
val = 0x420000;
if (t->audmode & V4L2_TUNER_MODE_LANG1) /* Mono */
val = 0x420000;
if (t->audmode & V4L2_TUNER_MODE_LANG2) /* SAP */
val = 0x410000;
if (t->audmode & V4L2_TUNER_MODE_STEREO) /* Stereo */
val = 0x020000;
if (val) {
gpio_bits(0x430000, val);
if (bttv_gpio)
bttv_gpio_tracking(btv,"winfast2000");
}
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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");
}
/*
@ -272,23 +340,33 @@ void pvbt878p9b_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
if (btv->radio_user)
return;
if (set) {
if (t->audmode & V4L2_TUNER_MODE_MONO) {
val = 0x01;
}
if ((t->audmode & (V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2))
|| (t->audmode & V4L2_TUNER_MODE_STEREO)) {
val = 0x02;
}
if (val) {
gpio_bits(0x03,val);
if (bttv_gpio)
bttv_gpio_tracking(btv,"pvbt878p9b");
}
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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");
}
/*
@ -298,28 +376,37 @@ void pvbt878p9b_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
*/
void fv2000s_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned int val = 0xffff;
unsigned int val;
if (btv->radio_user)
return;
if (set) {
if (t->audmode & V4L2_TUNER_MODE_MONO) {
val = 0x0000;
}
if ((t->audmode & (V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2))
|| (t->audmode & V4L2_TUNER_MODE_STEREO)) {
val = 0x1080; /*-dk-???: 0x0880, 0x0080, 0x1800 ... */
}
if (val != 0xffff) {
gpio_bits(0x1800, val);
if (bttv_gpio)
bttv_gpio_tracking(btv,"fv2000s");
}
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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");
}
/*
@ -328,26 +415,33 @@ void fv2000s_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
*/
void windvr_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
{
unsigned long val = 0;
unsigned long val;
if (set) {
if (t->audmode & V4L2_TUNER_MODE_MONO)
val = 0x040000;
if (t->audmode & V4L2_TUNER_MODE_LANG1)
val = 0;
if (t->audmode & V4L2_TUNER_MODE_LANG2)
val = 0x100000;
if (t->audmode & V4L2_TUNER_MODE_STEREO)
val = 0;
if (val) {
gpio_bits(0x140000, val);
if (bttv_gpio)
bttv_gpio_tracking(btv,"windvr");
}
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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");
}
/*
@ -360,23 +454,36 @@ void adtvk503_audio(struct bttv *btv, struct v4l2_tuner *t, int set)
/* btaor(0x1e0000, ~0x1e0000, BT848_GPIO_OUT_EN); */
if (set) {
/* btor(***, BT848_GPIO_OUT_EN); */
if (t->audmode & V4L2_TUNER_MODE_LANG1)
con = 0x00000000;
if (t->audmode & V4L2_TUNER_MODE_LANG2)
con = 0x00180000;
if (t->audmode & V4L2_TUNER_MODE_STEREO)
con = 0x00000000;
if (t->audmode & V4L2_TUNER_MODE_MONO)
con = 0x00060000;
if (con != 0xffffff) {
gpio_bits(0x1e0000,con);
if (bttv_gpio)
bttv_gpio_tracking(btv, "adtvk503");
}
} else {
t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO |
V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
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");
}