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authorStefan Richter <stefanr@s5r6.in-berlin.de>2009-11-08 18:29:08 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-05 18:41:41 -0200
commit054286b12c7ba7d37a945326d38716a00434002b (patch)
treed0d236c5f9d4341e38a3896f9d81a93bc51b8d4b /drivers/media/dvb/firewire
parent56411f49f69140b97e259256b99dc276f2b2b427 (diff)
V4L/DVB (13398): firedtv: reform lock transaction backend call
Preparation for the port of firedtv to the firewire-core kernel API: The fdtv->backend->lock() hook and thus the CMP code is slightly changed to better fit with the new API. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/firewire')
-rw-r--r--drivers/media/dvb/firewire/firedtv-1394.c11
-rw-r--r--drivers/media/dvb/firewire/firedtv-avc.c50
-rw-r--r--drivers/media/dvb/firewire/firedtv.h2
3 files changed, 37 insertions, 26 deletions
diff --git a/drivers/media/dvb/firewire/firedtv-1394.c b/drivers/media/dvb/firewire/firedtv-1394.c
index a2e3841f8ee..22ea4c90f5c 100644
--- a/drivers/media/dvb/firewire/firedtv-1394.c
+++ b/drivers/media/dvb/firewire/firedtv-1394.c
@@ -87,10 +87,15 @@ static inline struct node_entry *node_of(struct firedtv *fdtv)
return container_of(fdtv->device, struct unit_directory, device)->ne;
}
-static int node_lock(struct firedtv *fdtv, u64 addr, void *data, __be32 arg)
+static int node_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
{
- return hpsb_node_lock(node_of(fdtv), addr, EXTCODE_COMPARE_SWAP, data,
- (__force quadlet_t)arg);
+ int ret;
+
+ ret = hpsb_node_lock(node_of(fdtv), addr, EXTCODE_COMPARE_SWAP,
+ (__force quadlet_t *)&data[1], (__force quadlet_t)data[0]);
+ data[0] = data[1];
+
+ return ret;
}
static int node_read(struct firedtv *fdtv, u64 addr, void *data, size_t len)
diff --git a/drivers/media/dvb/firewire/firedtv-avc.c b/drivers/media/dvb/firewire/firedtv-avc.c
index 485d061319a..5516c33b145 100644
--- a/drivers/media/dvb/firewire/firedtv-avc.c
+++ b/drivers/media/dvb/firewire/firedtv-avc.c
@@ -1251,14 +1251,14 @@ static int cmp_read(struct firedtv *fdtv, void *buf, u64 addr, size_t len)
return ret;
}
-static int cmp_lock(struct firedtv *fdtv, void *data, u64 addr, __be32 arg)
+static int cmp_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
{
int ret;
if (mutex_lock_interruptible(&fdtv->avc_mutex))
return -EINTR;
- ret = fdtv->backend->lock(fdtv, addr, data, arg);
+ ret = fdtv->backend->lock(fdtv, addr, data);
if (ret < 0)
dev_err(fdtv->device, "CMP: lock I/O error\n");
@@ -1288,25 +1288,25 @@ static inline void set_opcr(__be32 *opcr, u32 value, u32 mask, u32 shift)
int cmp_establish_pp_connection(struct firedtv *fdtv, int plug, int channel)
{
- __be32 old_opcr, opcr;
+ __be32 old_opcr, opcr[2];
u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
int attempts = 0;
int ret;
- ret = cmp_read(fdtv, &opcr, opcr_address, 4);
+ ret = cmp_read(fdtv, opcr, opcr_address, 4);
if (ret < 0)
return ret;
repeat:
- if (!get_opcr_online(opcr)) {
+ if (!get_opcr_online(*opcr)) {
dev_err(fdtv->device, "CMP: output offline\n");
return -EBUSY;
}
- old_opcr = opcr;
+ old_opcr = *opcr;
- if (get_opcr_p2p_connections(opcr)) {
- if (get_opcr_channel(opcr) != channel) {
+ if (get_opcr_p2p_connections(*opcr)) {
+ if (get_opcr_channel(*opcr) != channel) {
dev_err(fdtv->device, "CMP: cannot change channel\n");
return -EBUSY;
}
@@ -1314,11 +1314,11 @@ repeat:
/* We don't allocate isochronous resources. */
} else {
- set_opcr_channel(&opcr, channel);
- set_opcr_data_rate(&opcr, 2); /* S400 */
+ set_opcr_channel(opcr, channel);
+ set_opcr_data_rate(opcr, 2); /* S400 */
/* FIXME: this is for the worst case - optimize */
- set_opcr_overhead_id(&opcr, 0);
+ set_opcr_overhead_id(opcr, 0);
/*
* FIXME: allocate isochronous channel and bandwidth at IRM
@@ -1326,13 +1326,16 @@ repeat:
*/
}
- set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) + 1);
+ set_opcr_p2p_connections(opcr, get_opcr_p2p_connections(*opcr) + 1);
- ret = cmp_lock(fdtv, &opcr, opcr_address, old_opcr);
+ opcr[1] = *opcr;
+ opcr[0] = old_opcr;
+
+ ret = cmp_lock(fdtv, opcr_address, opcr);
if (ret < 0)
return ret;
- if (old_opcr != opcr) {
+ if (old_opcr != *opcr) {
/*
* FIXME: if old_opcr.P2P_Connections > 0,
* deallocate isochronous channel and bandwidth at IRM
@@ -1350,27 +1353,30 @@ repeat:
void cmp_break_pp_connection(struct firedtv *fdtv, int plug, int channel)
{
- __be32 old_opcr, opcr;
+ __be32 old_opcr, opcr[2];
u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
int attempts = 0;
- if (cmp_read(fdtv, &opcr, opcr_address, 4) < 0)
+ if (cmp_read(fdtv, opcr, opcr_address, 4) < 0)
return;
repeat:
- if (!get_opcr_online(opcr) || !get_opcr_p2p_connections(opcr) ||
- get_opcr_channel(opcr) != channel) {
+ if (!get_opcr_online(*opcr) || !get_opcr_p2p_connections(*opcr) ||
+ get_opcr_channel(*opcr) != channel) {
dev_err(fdtv->device, "CMP: no connection to break\n");
return;
}
- old_opcr = opcr;
- set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) - 1);
+ old_opcr = *opcr;
+ set_opcr_p2p_connections(opcr, get_opcr_p2p_connections(*opcr) - 1);
+
+ opcr[1] = *opcr;
+ opcr[0] = old_opcr;
- if (cmp_lock(fdtv, &opcr, opcr_address, old_opcr) < 0)
+ if (cmp_lock(fdtv, opcr_address, opcr) < 0)
return;
- if (old_opcr != opcr) {
+ if (old_opcr != *opcr) {
/*
* FIXME: if old_opcr.P2P_Connections == 1, i.e. we were last
* owner, deallocate isochronous channel and bandwidth at IRM
diff --git a/drivers/media/dvb/firewire/firedtv.h b/drivers/media/dvb/firewire/firedtv.h
index d48530b81e6..1b99660a839 100644
--- a/drivers/media/dvb/firewire/firedtv.h
+++ b/drivers/media/dvb/firewire/firedtv.h
@@ -72,7 +72,7 @@ struct input_dev;
struct firedtv;
struct firedtv_backend {
- int (*lock)(struct firedtv *fdtv, u64 addr, void *data, __be32 arg);
+ int (*lock)(struct firedtv *fdtv, u64 addr, __be32 data[]);
int (*read)(struct firedtv *fdtv, u64 addr, void *data, size_t len);
int (*write)(struct firedtv *fdtv, u64 addr, void *data, size_t len);
int (*start_iso)(struct firedtv *fdtv);