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Add hint and sysctl support for 4 wire mode.

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PR:		155241
Submitted by:	Ian Lapore
This commit is contained in:
Warner Losh 2012-08-27 04:30:53 +00:00
parent f535f4234a
commit bb6e4fd030
1 changed files with 13 additions and 7 deletions
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20
sys/arm/at91/at91_mci.c
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@ -236,8 +236,10 @@ at91_mci_attach(device_t dev)
device_t child;
int err;
sc->dev = dev;
sctx = device_get_sysctl_ctx(dev);
soid = device_get_sysctl_tree(dev);
sc->dev = dev;
sc->sc_cap = 0;
if (at91_is_rm92())
sc->sc_cap |= CAP_NEEDS_BYTESWAP;
@ -273,14 +275,18 @@ at91_mci_attach(device_t dev)
goto out;
}
sctx = device_get_sysctl_ctx(dev);
soid = device_get_sysctl_tree(dev);
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "4wire",
CTLFLAG_RW, &sc->has_4wire, 0, "has 4 wire SD Card bus");
#ifdef AT91_MCI_HAS_4WIRE
/*
* Allow 4-wire to be initially set via #define.
* Allow a device hint to override that.
* Allow a sysctl to override that.
*/
#if defined(AT91_MCI_HAS_4WIRE) && AT91_MCI_HAS_4WIRE != 0
sc->has_4wire = 1;
#endif
resource_int_value(device_get_name(dev), device_get_unit(dev),
"4wire", &sc->has_4wire);
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "4wire",
CTLFLAG_RW, &sc->has_4wire, 0, "has 4 wire SD Card bus");
if (sc->has_4wire)
sc->sc_cap |= CAP_HAS_4WIRE;