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Code

Fix board initialization in uSD driver. atspi-id now works.

Browse Source 
- tools/lib/atusd.c (atusd_cycle): we never turned power back on ?
- tools/atspi-id/atspi-id.c (main): call atspi_close on exit
- tools/lib/atusd.c (atusd_cycle, wait_for_power): moved power on delay to
  separate function
- tools/lib/atusd.c (atusd_open): wait for power to stabilize
- tools/lib/atusd.c (atusd_open): need to reset the board to bring it
  up properly
This commit is contained in:
Werner Almesberger 2010-09-05 21:18:56 -03:00
parent 406517baa2
commit b25cbd8120
2 changed files with 23 additions and 14 deletions
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2
tools/atspi-id/atspi-id.c
View File

@ -144,5 +144,7 @@ int main(int argc, const char **argv)
show_info(dsc);
atspi_close(dsc);
return 0;
}

35
tools/lib/atusd.c
View File

@ -68,6 +68,16 @@ struct atusd_dsc {
/* ----- Reset functions --------------------------------------------------- */
static void wait_for_power(void)
{
/*
* Give power time to stabilize and the chip time to reset.
* Experiments show that even usleep(0) is long enough.
*/
usleep(10*1000);
}
static void atusd_cycle(struct atusd_dsc *dsc)
{
/* stop the MMC bus clock */
@ -97,11 +107,7 @@ static void atusd_cycle(struct atusd_dsc *dsc)
/* start MMC clock output */
MSC_STRPCL = 2;
/*
* Give power time to stabilize and the chip time to reset.
* Experiments show that even usleep(0) is long enough.
*/
usleep(10*1000);
wait_for_power();
}
@ -205,6 +211,14 @@ static void spi_send(struct atusd_dsc *dsc, uint8_t v)
/* ----- Driver operations ------------------------------------------------- */
static void atusd_reset_rf(void *handle)
{
struct atusd_dsc *dsc = handle;
atusd_cycle(dsc);
}
static void *atusd_open(void)
{
struct atusd_dsc *dsc;
@ -254,7 +268,8 @@ static void *atusd_open(void)
/* start MMC clock output */
MSC_STRPCL = 2;
atusd_cycle(dsc);
wait_for_power();
atusd_reset_rf(dsc);
return dsc;
}
@ -275,14 +290,6 @@ static void atusd_close(void *arg)
}
static void atusd_reset_rf(void *handle)
{
struct atusd_dsc *dsc = handle;
atusd_cycle(dsc);
}
static void atusd_reg_write(void *handle, uint8_t reg, uint8_t v)
{
struct atusd_dsc *dsc = handle;