d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

arm: allwinner: aw_mmc: Check regulators status before enabling/disabling them

Browse Source 
Sponsored by:	Diablotin Systems
Differential Revision:	https://reviews.freebsd.org/D30294
This commit is contained in:
Emmanuel Vadot 2021-05-16 16:24:31 +02:00
parent f52072b06d
commit 115e71a457
1 changed files with 22 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
sys/arm/allwinner/aw_mmc.c
View File

@ -1285,6 +1285,8 @@ aw_mmc_update_ios(device_t bus, device_t child)
struct mmc_ios *ios;
unsigned int clock;
uint32_t reg, div = 1;
int reg_status;
int rv;
sc = device_get_softc(bus);
@ -1310,10 +1312,16 @@ aw_mmc_update_ios(device_t bus, device_t child)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD))
device_printf(sc->aw_dev, "Powering down sd/mmc\n");
if (sc->mmc_helper.vmmc_supply)
regulator_disable(sc->mmc_helper.vmmc_supply);
if (sc->mmc_helper.vqmmc_supply)
regulator_disable(sc->mmc_helper.vqmmc_supply);
if (sc->mmc_helper.vmmc_supply) {
rv = regulator_status(sc->mmc_helper.vmmc_supply, &reg_status);
if (rv == 0 && reg_status == REGULATOR_STATUS_ENABLED)
regulator_disable(sc->mmc_helper.vmmc_supply);
}
if (sc->mmc_helper.vqmmc_supply) {
rv = regulator_status(sc->mmc_helper.vqmmc_supply, &reg_status);
if (rv == 0 && reg_status == REGULATOR_STATUS_ENABLED)
regulator_disable(sc->mmc_helper.vqmmc_supply);
}
aw_mmc_reset(sc);
break;
@ -1321,10 +1329,16 @@ aw_mmc_update_ios(device_t bus, device_t child)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD))
device_printf(sc->aw_dev, "Powering up sd/mmc\n");
if (sc->mmc_helper.vmmc_supply)
regulator_enable(sc->mmc_helper.vmmc_supply);
if (sc->mmc_helper.vqmmc_supply)
regulator_enable(sc->mmc_helper.vqmmc_supply);
if (sc->mmc_helper.vmmc_supply) {
rv = regulator_status(sc->mmc_helper.vmmc_supply, &reg_status);
if (rv == 0 && reg_status != REGULATOR_STATUS_ENABLED)
regulator_enable(sc->mmc_helper.vmmc_supply);
}
if (sc->mmc_helper.vqmmc_supply) {
rv = regulator_status(sc->mmc_helper.vqmmc_supply, &reg_status);
if (rv == 0 && reg_status != REGULATOR_STATUS_ENABLED)
regulator_enable(sc->mmc_helper.vqmmc_supply);
}
aw_mmc_init(sc);
break;
};