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[media] saa7164: monitor the RISC cpu load via a thread

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Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Steven Toth 2010-07-31 16:18:35 -03:00 committed by Mauro Carvalho Chehab
parent 0b62ceb035
commit 1247ff5c0a
5 changed files with 50 additions and 0 deletions
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25
drivers/media/video/saa7164/saa7164-api.c
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@ -24,6 +24,31 @@
#include "saa7164.h"
int saa7164_api_get_load_info(struct saa7164_dev *dev, tmFwInfoStruct_t *i)
{
int ret, debug;
if (!(debug & DBGLVL_CPU))
return 0;
dprintk(DBGLVL_API, "%s()\n", __func__);
i->deviceinst = 0;
i->devicespec = 0;
i->mode = 0;
i->status = 0;
ret = saa7164_cmd_send(dev, 0, GET_CUR,
GET_FW_STATUS_CONTROL, sizeof(tmFwInfoStruct_t), i);
if (ret != SAA_OK) {
printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, ret);
}
printk(KERN_INFO "saa7164[%d]-CPU: %d percent", dev->nr, i->CPULoad);
return ret;
}
int saa7164_api_collect_debug(struct saa7164_dev *dev)
{
tmComResDebugGetData_t d;

10
drivers/media/video/saa7164/saa7164-core.c
View File

@ -1191,6 +1191,8 @@ static int saa7164_proc_create(void)
static int saa7164_thread_function(void *data)
{
struct saa7164_dev *dev = data;
tmFwInfoStruct_t fwinfo;
u64 last_poll_time = 0;
dprintk(DBGLVL_THR, "thread started\n");
@ -1205,8 +1207,16 @@ static int saa7164_thread_function(void *data)
dprintk(DBGLVL_THR, "thread running\n");
/* Dump the firmware debug message to console */
/* Polling this costs us 1-2% of the arm CPU */
/* convert this into a respnde to interrupt 0x7a */
saa7164_api_collect_debug(dev);
/* Monitor CPU load every 1 second */
if ((last_poll_time + 1000 /* ms */) < jiffies_to_msecs(jiffies)) {
saa7164_api_get_load_info(dev, &fwinfo);
last_poll_time = jiffies_to_msecs(jiffies);
}
}
dprintk(DBGLVL_THR, "thread exiting\n");

1
drivers/media/video/saa7164/saa7164-reg.h
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@ -60,6 +60,7 @@
#define GET_STRING_CONTROL 0x03
#define GET_LANGUAGE_CONTROL 0x05
#define SET_POWER_CONTROL 0x07
#define GET_FW_STATUS_CONTROL 0x08
#define GET_FW_VERSION_CONTROL 0x09
#define SET_DEBUG_LEVEL_CONTROL 0x0B
#define GET_DEBUG_DATA_CONTROL 0x0C

12
drivers/media/video/saa7164/saa7164-types.h
View File

@ -446,3 +446,15 @@ typedef struct
u8 ucDebugData[256];
} __attribute__((packed)) tmComResDebugGetData_t;
typedef struct
{
u32 status;
u32 mode;
u32 devicespec;
u32 deviceinst;
u32 CPULoad;
u32 RemainHeap;
u32 CPUClock;
u32 RAMSpeed;
} __attribute__((packed)) tmFwInfoStruct_t;

2
drivers/media/video/saa7164/saa7164.h
View File

@ -112,6 +112,7 @@
#define DBGLVL_ENC 1024
#define DBGLVL_VBI 2048
#define DBGLVL_THR 4096
#define DBGLVL_CPU 8192
#define SAA7164_NORMS ( V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_443 )
@ -551,6 +552,7 @@ int saa7164_api_get_videomux(struct saa7164_port *port);
int saa7164_api_set_vbi_format(struct saa7164_port *port);
int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
int saa7164_api_collect_debug(struct saa7164_dev *dev);
int saa7164_api_get_load_info(struct saa7164_dev *dev, tmFwInfoStruct_t *i);
/* ----------------------------------------------------------- */
/* saa7164-cards.c */