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authorAbylay Ospan <aospan@netup.ru>2009-09-16 13:08:06 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-09-19 00:15:48 -0300
commit8386c27f4786482c569a0f53f78ca6624068ba10 (patch)
tree9855b50f70ca1ef46e1e3cef0bd7c218f77e0731
parent4f7cb8837cec65ade18b0e2655292fd98040234e (diff)
V4L/DVB (12956): Fix gpio mutex in NetUP Dual DVB-S2 CI card.
The card uses the same cx23885 gpio lines for two adapters. In case of there is several cards in system we must implement gpio mutex per cx23885 chip. Signed-off-by: Abylay Ospan <aospan@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/video/cx23885/cimax2.c12
-rw-r--r--drivers/media/video/cx23885/cx23885-core.c1
-rw-r--r--drivers/media/video/cx23885/cx23885.h1
3 files changed, 8 insertions, 6 deletions
diff --git a/drivers/media/video/cx23885/cimax2.c b/drivers/media/video/cx23885/cimax2.c
index 0316257b734..c04222ffb28 100644
--- a/drivers/media/video/cx23885/cimax2.c
+++ b/drivers/media/video/cx23885/cimax2.c
@@ -75,7 +75,6 @@ struct netup_ci_state {
void *priv;
};
-struct mutex gpio_mutex;/* Two CiMax's uses same GPIO lines */
int netup_read_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
u8 *buf, int len)
@@ -183,10 +182,11 @@ int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
if (ret != 0)
return ret;
- mutex_lock(&gpio_mutex);
+ mutex_lock(&dev->gpio_lock);
/* write addr */
cx_write(MC417_OEN, NETUP_EN_ALL);
+ msleep(2);
cx_write(MC417_RWD, NETUP_CTRL_OFF |
NETUP_ADLO | (0xff & addr));
cx_clear(MC417_RWD, NETUP_ADLO);
@@ -194,9 +194,10 @@ int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
NETUP_ADHI | (0xff & (addr >> 8)));
cx_clear(MC417_RWD, NETUP_ADHI);
- if (read) /* data in */
+ if (read) { /* data in */
cx_write(MC417_OEN, NETUP_EN_ALL | NETUP_DATA);
- else /* data out */
+ msleep(2);
+ } else /* data out */
cx_write(MC417_RWD, NETUP_CTRL_OFF | data);
/* choose chip */
@@ -206,7 +207,7 @@ int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
cx_clear(MC417_RWD, (read) ? NETUP_RD : NETUP_WR);
mem = netup_ci_get_mem(dev);
- mutex_unlock(&gpio_mutex);
+ mutex_unlock(&dev->gpio_lock);
if (!read)
if (mem < 0)
@@ -403,7 +404,6 @@ int netup_ci_init(struct cx23885_tsport *port)
switch (port->nr) {
case 1:
state->ci_i2c_addr = 0x40;
- mutex_init(&gpio_mutex);
break;
case 2:
state->ci_i2c_addr = 0x41;
diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c
index 40d438d7234..c31284ba19d 100644
--- a/drivers/media/video/cx23885/cx23885-core.c
+++ b/drivers/media/video/cx23885/cx23885-core.c
@@ -758,6 +758,7 @@ static int cx23885_dev_setup(struct cx23885_dev *dev)
int i;
mutex_init(&dev->lock);
+ mutex_init(&dev->gpio_lock);
atomic_inc(&dev->refcount);
diff --git a/drivers/media/video/cx23885/cx23885.h b/drivers/media/video/cx23885/cx23885.h
index 86f26947bb7..bee689104a2 100644
--- a/drivers/media/video/cx23885/cx23885.h
+++ b/drivers/media/video/cx23885/cx23885.h
@@ -325,6 +325,7 @@ struct cx23885_dev {
int nr;
struct mutex lock;
+ struct mutex gpio_lock;
/* board details */
unsigned int board;