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tools/lib: cache chip ID in the descriptor

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- atrf.c (struct atrf_dsc): added field "chip_id" to cache chip ID
- atrf.c (identify, atrf_identify): moved identification logic to new
  function
- atrf.c (atrf_open, atrf_identify): cache chip ID when opening the
  device and return ID from cache
This commit is contained in:
Werner Almesberger 2011-02-10 21:15:05 -03:00
parent f8fbb02bb0
commit e73ca5fcd5
1 changed files with 57 additions and 49 deletions
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106
tools/lib/atrf.c
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@ -27,6 +27,7 @@ extern struct atrf_driver atben_driver;
struct atrf_dsc { struct atrf_dsc {
struct atrf_driver *driver; struct atrf_driver *driver;
void *handle; void *handle;
enum atrf_chip_id chip_id;
}; };
@ -53,55 +54,7 @@ int atrf_clear_error(struct atrf_dsc *dsc)
} }
struct atrf_dsc *atrf_open(void) static enum atrf_chip_id identify(struct atrf_dsc *dsc)
{
struct atrf_dsc *dsc;
struct atrf_driver *driver;
void *handle;
#ifdef HAVE_USB
driver = &atusb_driver;
#elif HAVE_BEN
driver = &atben_driver;
#else
#error Need either HAVE_USB or HAVE_BEN
#endif
handle = driver->open();
if (!handle)
return NULL;
dsc = malloc(sizeof(*dsc));
if (!dsc) {
perror("malloc");
exit(1);
}
dsc->driver = driver;
dsc->handle = handle;
return dsc;
}
void atrf_close(struct atrf_dsc *dsc)
{
if (dsc->driver->close)
dsc->driver->close(dsc->handle);
free(dsc);
}
void atrf_reset(struct atrf_dsc *dsc)
{
if (dsc->driver->reset)
dsc->driver->reset(dsc->handle);
}
void atrf_reset_rf(struct atrf_dsc *dsc)
{
dsc->driver->reset_rf(dsc->handle);
}
enum atrf_chip_id atrf_identify(struct atrf_dsc *dsc)
{ {
uint8_t part, version; uint8_t part, version;
@ -132,6 +85,61 @@ enum atrf_chip_id atrf_identify(struct atrf_dsc *dsc)
} }
struct atrf_dsc *atrf_open(void)
{
struct atrf_dsc *dsc;
struct atrf_driver *driver;
void *handle;
#ifdef HAVE_USB
driver = &atusb_driver;
#elif HAVE_BEN
driver = &atben_driver;
#else
#error Need either HAVE_USB or HAVE_BEN
#endif
handle = driver->open();
if (!handle)
return NULL;
dsc = malloc(sizeof(*dsc));
if (!dsc) {
perror("malloc");
exit(1);
}
dsc->driver = driver;
dsc->handle = handle;
dsc->chip_id = identify(dsc);
return dsc;
}
void atrf_close(struct atrf_dsc *dsc)
{
if (dsc->driver->close)
dsc->driver->close(dsc->handle);
free(dsc);
}
void atrf_reset(struct atrf_dsc *dsc)
{
if (dsc->driver->reset)
dsc->driver->reset(dsc->handle);
}
void atrf_reset_rf(struct atrf_dsc *dsc)
{
dsc->driver->reset_rf(dsc->handle);
}
enum atrf_chip_id atrf_identify(struct atrf_dsc *dsc)
{
return dsc->chip_id;
}
int atrf_test_mode(struct atrf_dsc *dsc) int atrf_test_mode(struct atrf_dsc *dsc)
{ {
if (!dsc->driver->test_mode) if (!dsc->driver->test_mode)