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[PATCH] v4l: 759: more improvements at msp3400 c from ivtv code
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- More improvements at msp3400.c from ivtv code.

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>
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Mauro Carvalho Chehab authored and Linus Torvalds committed Nov 9, 2005
1 parent 6df840f commit 18f47d1
Showing 1 changed file with 93 additions and 18 deletions.
111 changes: 93 additions & 18 deletions drivers/media/video/msp3400.c
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Original file line number Diff line number Diff line change
Expand Up @@ -649,6 +649,30 @@ msp3400c_print_mode(struct msp3400c *msp)
}
}

#define MSP3400_MAX 4
static struct i2c_client *msps[MSP3400_MAX];
static void msp3400c_restore_dfp(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int i;

for (i = 0; i < DFP_COUNT; i++) {
if (-1 == msp->dfp_regs[i])
continue;
msp3400c_write(client, I2C_MSP3400C_DFP, i, msp->dfp_regs[i]);
}
}

/* if the dfp_regs is set, set what's in there. Otherwise, set the default value */
static int msp3400c_write_dfp_with_default(struct i2c_client *client,
int addr, int default_value)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int value = default_value;
if (addr < DFP_COUNT && -1 != msp->dfp_regs[addr])
value = msp->dfp_regs[addr];
return msp3400c_write(client, I2C_MSP3400C_DFP, addr, value);
}

/* ----------------------------------------------------------------------- */

Expand Down Expand Up @@ -834,7 +858,8 @@ static int msp3400c_thread(void *data)
goto restart;

/* carrier detect pass #1 -- main carrier */
cd = carrier_detect_main; count = CARRIER_COUNT(carrier_detect_main);
cd = carrier_detect_main;
count = CARRIER_COUNT(carrier_detect_main);

if (amsound && (msp->norm == VIDEO_MODE_SECAM)) {
/* autodetect doesn't work well with AM ... */
Expand Down Expand Up @@ -868,13 +893,16 @@ static int msp3400c_thread(void *data)
case 0: /* 4.5 */
case 2: /* 6.0 */
default:
cd = NULL; count = 0;
cd = NULL;
count = 0;
break;
}

if (amsound && (msp->norm == VIDEO_MODE_SECAM)) {
/* autodetect doesn't work well with AM ... */
cd = NULL; count = 0; max2 = 0;
cd = NULL;
count = 0;
max2 = 0;
}
for (this = 0; this < count; this++) {
msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
Expand Down Expand Up @@ -962,6 +990,8 @@ static int msp3400c_thread(void *data)

/* unmute */
msp3400c_setvolume(client, msp->muted, msp->left, msp->right);
msp3400c_restore_dfp(client);

if (debug)
msp3400c_print_mode(msp);

Expand Down Expand Up @@ -1207,6 +1237,7 @@ static int msp3410d_thread(void *data)
msp3400c_settreble(client, msp->treble);
msp3400c_setvolume(client, msp->muted, msp->left, msp->right);
msp3400c_write(client, I2C_MSP3400C_DFP, 0x0013, msp->acb);
msp3400c_restore_dfp(client);

/* monitor tv audio mode */
while (msp->watch_stereo) {
Expand All @@ -1230,7 +1261,7 @@ static void msp34xxg_set_source(struct i2c_client *client, int source);
/* (re-)initialize the msp34xxg, according to the current norm in msp->norm
* return 0 if it worked, -1 if it failed
*/
static int msp34xxg_init(struct i2c_client *client)
static int msp34xxg_reset(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int modus,std;
Expand All @@ -1257,29 +1288,26 @@ static int msp34xxg_init(struct i2c_client *client)
return -1;
if (msp3400c_write(client,
I2C_MSP3400C_DEM,
0x20/*stanard*/,
0x20/*standard*/,
std))
return -1;

/* write the dfps that may have an influence on
standard/audio autodetection right now */
msp34xxg_set_source(client, msp->source);

if (msp3400c_write(client, I2C_MSP3400C_DFP,
0x0e, /* AM/FM Prescale */
0x3000 /* default: [15:8] 75khz deviation */))
if (msp3400c_write_dfp_with_default(client, 0x0e, /* AM/FM Prescale */
0x3000
/* default: [15:8] 75khz deviation */
))
return -1;

if (msp3400c_write(client, I2C_MSP3400C_DFP,
0x10, /* NICAM Prescale */
0x5a00 /* default: 9db gain (as recommended) */))
if (msp3400c_write_dfp_with_default(client, 0x10, /* NICAM Prescale */
0x5a00
/* default: 9db gain (as recommended) */
))
return -1;

if (msp3400c_write(client,
I2C_MSP3400C_DEM,
0x20, /* STANDARD SELECT */
standard /* default: 0x01 for automatic standard select*/))
return -1;
return 0;
}

Expand All @@ -1303,7 +1331,7 @@ static int msp34xxg_thread(void *data)
break;

/* setup the chip*/
msp34xxg_init(client);
msp34xxg_reset(client);
std = standard;
if (std != 0x01)
goto unmute;
Expand Down Expand Up @@ -1486,6 +1514,7 @@ static int msp_attach(struct i2c_adapter *adap, int addr, int kind)
struct msp3400c *msp;
struct i2c_client *c;
int (*thread_func)(void *data) = NULL;
int i;

client_template.adapter = adap;
client_template.addr = addr;
Expand All @@ -1504,12 +1533,15 @@ static int msp_attach(struct i2c_adapter *adap, int addr, int kind)
}

memset(msp,0,sizeof(struct msp3400c));
msp->norm = VIDEO_MODE_NTSC;
msp->left = 58880; /* 0db gain */
msp->right = 58880; /* 0db gain */
msp->bass = 32768;
msp->treble = 32768;
msp->input = -1;
msp->muted = 0;
for (i = 0; i < DFP_COUNT; i++)
msp->dfp_regs[i] = -1;

i2c_set_clientdata(c, msp);
init_waitqueue_head(&msp->wq);
Expand Down Expand Up @@ -1579,6 +1611,7 @@ static int msp_attach(struct i2c_adapter *adap, int addr, int kind)
/* startup control thread if needed */
if (thread_func) {
msp->kthread = kthread_run(thread_func, c, "msp34xx");

if (NULL == msp->kthread)
printk(KERN_WARNING "msp34xx: kernel_thread() failed\n");
msp_wake_thread(c);
Expand All @@ -1587,21 +1620,39 @@ static int msp_attach(struct i2c_adapter *adap, int addr, int kind)
/* done */
i2c_attach_client(c);

/* update our own array */
for (i = 0; i < MSP3400_MAX; i++) {
if (NULL == msps[i]) {
msps[i] = c;
break;
}
}

return 0;
}

static int msp_detach(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int i;

/* shutdown control thread */
if (msp->kthread) {
msp->restart = 1;
kthread_stop(msp->kthread);
}
msp3400c_reset(client);
msp3400c_reset(client);

/* update our own array */
for (i = 0; i < MSP3400_MAX; i++) {
if (client == msps[i]) {
msps[i] = NULL;
break;
}
}

i2c_detach_client(client);

kfree(msp);
kfree(client);
return 0;
Expand Down Expand Up @@ -1753,6 +1804,30 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
break;
}
break;
/* work-in-progress: hook to control the DFP registers */
case MSP_SET_DFPREG:
{
struct msp_dfpreg *r = arg;
int i;

if (r->reg < 0 || r->reg >= DFP_COUNT)
return -EINVAL;
for (i = 0; i < sizeof(bl_dfp) / sizeof(int); i++)
if (r->reg == bl_dfp[i])
return -EINVAL;
msp->dfp_regs[r->reg] = r->value;
msp3400c_write(client, I2C_MSP3400C_DFP, r->reg, r->value);
return 0;
}
case MSP_GET_DFPREG:
{
struct msp_dfpreg *r = arg;

if (r->reg < 0 || r->reg >= DFP_COUNT)
return -EINVAL;
r->value = msp3400c_read(client, I2C_MSP3400C_DFP, r->reg);
return 0;
}

/* --- v4l ioctls --- */
/* take care: bttv does userspace copying, we'll get a
Expand Down

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