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Implement power down, and power down the bus on detach.

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Submitted by:	mav@
This commit is contained in:
Warner Losh 2008-09-28 23:24:52 +00:00
parent 08eb9a9be8
commit 5d2f651035
1 changed files with 15 additions and 1 deletions
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16
sys/dev/mmc/mmc.c
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@ -106,6 +106,7 @@ static int mmc_detach(device_t dev);
#define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
static void mmc_delayed_attach(void *);
static void mmc_power_down(struct mmc_softc *sc);
static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd,
int retries);
static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
@ -161,6 +162,7 @@ mmc_detach(device_t dev)
free(ivar, M_DEVBUF);
}
free(kids, M_TEMP);
mmc_power_down(sc);
MMC_LOCK_DESTROY(sc);
@ -454,7 +456,19 @@ mmc_power_up(struct mmc_softc *sc)
mmc_ms_delay(2);
}
// I wonder if the following is endian safe.
static void
mmc_power_down(struct mmc_softc *sc)
{
device_t dev = sc->dev;
mmcbr_set_bus_mode(dev, opendrain);
mmcbr_set_chip_select(dev, cs_dontcare);
mmcbr_set_bus_width(dev, bus_width_1);
mmcbr_set_power_mode(dev, power_off);
mmcbr_set_clock(dev, 0);
mmcbr_update_ios(dev);
}
static uint32_t
mmc_get_bits(uint32_t *bits, int start, int size)
{