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ddbridge: Added mutex to CA interface functions

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This fixes CAM write errors on the DD Octopus CI dual card.
Changed also the return values of wait_ci_ready and read_cam_control
to -EIO.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
This commit is contained in:
Jasmin Jessich 2017-08-12 18:31:16 +02:00
parent 5751c3fb1a
commit 0f89cfe19a
1 changed files with 27 additions and 5 deletions
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32
ddbridge/ddbridge-core.c
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@ -2470,7 +2470,7 @@ static int wait_ci_ready(struct ddb_ci *ci)
break;
usleep_range(1, 2);
if ((--count) == 0)
return -1;
return -EIO;
} while (1);
return 0;
}
@ -2483,10 +2483,12 @@ static int read_attribute_mem(struct dvb_ca_en50221 *ca,
if (address > CI_BUFFER_SIZE)
return -1;
mutex_lock(&ci->lock);
ddbwritel(ci->port->dev, CI_READ_CMD | (1 << 16) | address,
CI_DO_READ_ATTRIBUTES(ci->nr));
wait_ci_ready(ci);
val = 0xff & ddbreadl(ci->port->dev, CI_BUFFER(ci->nr) + off);
mutex_unlock(&ci->lock);
return val;
}
@ -2495,9 +2497,11 @@ static int write_attribute_mem(struct dvb_ca_en50221 *ca, int slot,
{
struct ddb_ci *ci = ca->data;
mutex_lock(&ci->lock);
ddbwritel(ci->port->dev, CI_WRITE_CMD | (value << 16) | address,
CI_DO_ATTRIBUTE_RW(ci->nr));
wait_ci_ready(ci);
mutex_unlock(&ci->lock);
return 0;
}
@ -2508,6 +2512,7 @@ static int read_cam_control(struct dvb_ca_en50221 *ca,
struct ddb_ci *ci = ca->data;
u32 res;
mutex_lock(&ci->lock);
ddbwritel(ci->port->dev, CI_READ_CMD | address,
CI_DO_IO_RW(ci->nr));
ndelay(500);
@ -2516,9 +2521,12 @@ static int read_cam_control(struct dvb_ca_en50221 *ca,
if (res & CI_READY)
break;
usleep_range(1, 2);
if ((--count) == 0)
return -1;
if ((--count) == 0) {
mutex_unlock(&ci->lock);
return -EIO;
}
} while (1);
mutex_unlock(&ci->lock);
return 0xff & res;
}
@ -2527,9 +2535,11 @@ static int write_cam_control(struct dvb_ca_en50221 *ca, int slot,
{
struct ddb_ci *ci = ca->data;
mutex_lock(&ci->lock);
ddbwritel(ci->port->dev, CI_WRITE_CMD | (value << 16) | address,
CI_DO_IO_RW(ci->nr));
wait_ci_ready(ci);
mutex_unlock(&ci->lock);
return 0;
}
@ -2537,6 +2547,7 @@ static int slot_reset(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
mutex_lock(&ci->lock);
ddbwritel(ci->port->dev, CI_POWER_ON,
CI_CONTROL(ci->nr));
msleep(100);
@ -2547,6 +2558,7 @@ static int slot_reset(struct dvb_ca_en50221 *ca, int slot)
udelay(20);
ddbwritel(ci->port->dev, CI_ENABLE | CI_POWER_ON,
CI_CONTROL(ci->nr));
mutex_unlock(&ci->lock);
return 0;
}
@ -2554,27 +2566,36 @@ static int slot_shutdown(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
mutex_lock(&ci->lock);
ddbwritel(ci->port->dev, 0, CI_CONTROL(ci->nr));
msleep(300);
mutex_unlock(&ci->lock);
return 0;
}
static int slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
u32 val = ddbreadl(ci->port->dev, CI_CONTROL(ci->nr));
u32 val;
mutex_lock(&ci->lock);
val = ddbreadl(ci->port->dev, CI_CONTROL(ci->nr));
ddbwritel(ci->port->dev, val | CI_BYPASS_DISABLE,
CI_CONTROL(ci->nr));
mutex_unlock(&ci->lock);
return 0;
}
static int poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int open)
{
struct ddb_ci *ci = ca->data;
u32 val = ddbreadl(ci->port->dev, CI_CONTROL(ci->nr));
u32 val;
int stat = 0;
mutex_lock(&ci->lock);
val = ddbreadl(ci->port->dev, CI_CONTROL(ci->nr));
mutex_unlock(&ci->lock);
if (val & CI_CAM_DETECT)
stat |= DVB_CA_EN50221_POLL_CAM_PRESENT;
if (val & CI_CAM_READY)
@ -2605,6 +2626,7 @@ static void ci_attach(struct ddb_port *port)
port->en = &ci->en;
ci->port = port;
ci->nr = port->nr - 2;
mutex_init(&ci->lock);
}
/****************************************************************************/