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Commit WIP SSC driver, more work is needed here, but it configures

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things OK.
This commit is contained in:
imp 2006-10-20 07:08:59 +00:00
parent dbcd7809d1
commit 105dd71b16
1 changed files with 26 additions and 6 deletions
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32
sys/arm/at91/at91_ssc.c
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@ -88,14 +88,16 @@ static void at91_ssc_deactivate(device_t dev);
/* cdev routines */
static d_open_t at91_ssc_open;
static d_close_t at91_ssc_close;
static d_ioctl_t at91_ssc_ioctl;
static d_read_t at91_ssc_read;
static d_write_t at91_ssc_write;
static struct cdevsw at91_ssc_cdevsw =
{
.d_version = D_VERSION,
.d_open = at91_ssc_open,
.d_close = at91_ssc_close,
.d_ioctl = at91_ssc_ioctl
.d_read = at91_ssc_read,
.d_write = at91_ssc_write,
};
static int
@ -134,6 +136,19 @@ at91_ssc_attach(device_t dev)
goto out;
}
sc->cdev->si_drv1 = sc;
// Init for TSC needs
WR4(sc, SSC_CR, SSC_CR_SWRST);
WR4(sc, SSC_CMR, 0); // clock divider unused
WR4(sc, SSC_RCMR,
SSC_RCMR_CKS_RK | SSC_RCMR_CKO_NONE | SSC_RCMR_START_FALL_EDGE_RF);
WR4(sc, SSC_RFMR,
0x1f | SSC_RFMR_MSFBF | SSC_RFMR_FSOS_NONE);
WR4(sc, SSC_TCMR,
SSC_TCMR_CKS_TK | SSC_TCMR_CKO_NONE | SSC_RCMR_START_CONT);
WR4(sc, SSC_TFMR,
0x1f | SSC_TFMR_DATDEF | SSC_TFMR_MSFBF | SSC_TFMR_FSOS_NEG_PULSE);
out:;
if (err)
at91_ssc_deactivate(dev);
@ -161,7 +176,7 @@ at91_ssc_activate(device_t dev)
rid = 0;
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (sc->mem_res == NULL)
if (sc->irq_res == NULL)
goto errout;
return (0);
errout:
@ -241,10 +256,15 @@ at91_ssc_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
}
static int
at91_ssc_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
struct thread *td)
at91_ssc_read(struct cdev *dev, struct uio *uio, int flag)
{
return (ENXIO);
return EIO;
}
static int
at91_ssc_write(struct cdev *dev, struct uio *uio, int flag)
{
return EIO;
}
static device_method_t at91_ssc_methods[] = {