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[media] saa7164: collect/show the firmware debugging 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 16:17:51 -03:00 committed by Mauro Carvalho Chehab
parent 6d152c200e
commit 0b62ceb035
3 changed files with 92 additions and 11 deletions
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5
drivers/media/video/saa7164/saa7164-api.c
View File

@ -24,7 +24,7 @@
#include "saa7164.h"
int saa7164_api_collect_debug(struct saa7164_dev *dev, struct seq_file *m)
int saa7164_api_collect_debug(struct saa7164_dev *dev)
{
tmComResDebugGetData_t d;
u8 more = 255;
@ -45,8 +45,7 @@ int saa7164_api_collect_debug(struct saa7164_dev *dev, struct seq_file *m)
if (d.dwResult != SAA_OK)
break;
seq_printf(m, "%s", d.ucDebugData);
printk(KERN_INFO "saa7164[%d]-FWMSG: %s", dev->nr, d.ucDebugData);
}
return 0;

88
drivers/media/video/saa7164/saa7164-core.c
View File

@ -1112,15 +1112,51 @@ static int saa7164_proc_show(struct seq_file *m, void *v)
dev = list_entry(list, struct saa7164_dev, devlist);
seq_printf(m, "%s = %p\n", dev->name, dev);
if (dev->board != SAA7164_BOARD_UNKNOWN) {
seq_printf(m, "Firmware messages ----->\n");
saa7164_api_collect_debug(dev, m);
seq_printf(m, "<---- Firmware messages\n");
}
/* Lock the bus from any other access */
b = &dev->bus;
mutex_lock(&b->lock);
seq_printf(m, " .m_pdwSetWritePos = 0x%x (0x%08x)\n",
b->m_dwSetReadPos, saa7164_readl(b->m_dwSetReadPos));
seq_printf(m, " .m_pdwSetReadPos = 0x%x (0x%08x)\n",
b->m_dwSetWritePos, saa7164_readl(b->m_dwSetWritePos));
seq_printf(m, " .m_pdwGetWritePos = 0x%x (0x%08x)\n",
b->m_dwGetReadPos, saa7164_readl(b->m_dwGetReadPos));
seq_printf(m, " .m_pdwGetReadPos = 0x%x (0x%08x)\n",
b->m_dwGetWritePos, saa7164_readl(b->m_dwGetWritePos));
c = 0;
seq_printf(m, "\n Set Ring:\n");
seq_printf(m, "\n addr 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
for (i = 0; i < b->m_dwSizeSetRing; i++) {
if (c == 0)
seq_printf(m, " %04x:", i);
seq_printf(m, " %02x", *(b->m_pdwSetRing + i));
if (++c == 16) {
seq_printf(m, "\n");
c = 0;
}
}
c = 0;
seq_printf(m, "\n Get Ring:\n");
seq_printf(m, "\n addr 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
for (i = 0; i < b->m_dwSizeGetRing; i++) {
if (c == 0)
seq_printf(m, " %04x:", i);
seq_printf(m, " %02x", *(b->m_pdwGetRing + i));
if (++c == 16) {
seq_printf(m, "\n");
c = 0;
}
}
mutex_unlock(&b->lock);
}
@ -1152,6 +1188,31 @@ static int saa7164_proc_create(void)
}
#endif
static int saa7164_thread_function(void *data)
{
struct saa7164_dev *dev = data;
dprintk(DBGLVL_THR, "thread started\n");
set_freezable();
while (1) {
msleep_interruptible(100);
if (kthread_should_stop())
break;
try_to_freeze();
dprintk(DBGLVL_THR, "thread running\n");
/* Dump the firmware debug message to console */
saa7164_api_collect_debug(dev);
}
dprintk(DBGLVL_THR, "thread exiting\n");
return 0;
}
static int __devinit saa7164_initdev(struct pci_dev *pci_dev,
const struct pci_device_id *pci_id)
{
@ -1313,6 +1374,14 @@ static int __devinit saa7164_initdev(struct pci_dev *pci_dev,
}
saa7164_api_set_debug(dev, fw_debug);
if (fw_debug) {
dev->kthread = kthread_run(saa7164_thread_function, dev,
"saa7164 debug");
if (!dev->kthread)
printk(KERN_ERR "%s() Failed to create "
"debug kernel thread\n", __func__);
}
} /* != BOARD_UNKNOWN */
else
printk(KERN_ERR "%s() Unsupported board detected, "
@ -1340,8 +1409,13 @@ static void __devexit saa7164_finidev(struct pci_dev *pci_dev)
{
struct saa7164_dev *dev = pci_get_drvdata(pci_dev);
if (dev->board != SAA7164_BOARD_UNKNOWN)
if (dev->board != SAA7164_BOARD_UNKNOWN) {
if (fw_debug && dev->kthread) {
kthread_stop(dev->kthread);
dev->kthread = NULL;
}
saa7164_api_set_debug(dev, 0x00);
}
saa7164_histogram_print(&dev->ports[ SAA7164_PORT_ENC1 ],
&dev->ports[ SAA7164_PORT_ENC1 ].irq_interval);

10
drivers/media/video/saa7164/saa7164.h
View File

@ -51,6 +51,8 @@
#include <linux/version.h>
#include <linux/mutex.h>
#include <linux/crc32.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <media/tuner.h>
#include <media/tveeprom.h>
@ -109,6 +111,7 @@
#define DBGLVL_BUF 512
#define DBGLVL_ENC 1024
#define DBGLVL_VBI 2048
#define DBGLVL_THR 4096
#define SAA7164_NORMS ( V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_443 )
@ -471,6 +474,11 @@ struct saa7164_dev {
/* Deferred command/api interrupts handling */
struct work_struct workcmd;
/* A kernel thread to monitor the firmware log, used
* only in debug mode.
*/
struct task_struct *kthread;
};
extern struct list_head saa7164_devlist;
@ -542,7 +550,7 @@ int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
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, struct seq_file *m);
int saa7164_api_collect_debug(struct saa7164_dev *dev);
/* ----------------------------------------------------------- */
/* saa7164-cards.c */