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

Enable use of the regulator in the Broadcom SDHCI controller

Browse Source 
This will be needed before a future GPIO controller driver is added
as the later enables regulators that leave the SDHCI controller disabled.

Reviewed by:	manu
Sponsored by:	Innovate UK
Differential Revision:	https://reviews.freebsd.org/D25834
This commit is contained in:
Andrew Turner 2020-07-28 09:46:58 +00:00
parent 22b33ca4b2
commit b77fd84692
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363637
1 changed files with 35 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
View File

@ -48,6 +48,7 @@ __FBSDID("$FreeBSD$");
#include <dev/mmc/bridge.h>
#include <dev/mmc/mmcreg.h>
#include <dev/mmc/mmc_fdt_helpers.h>
#include <dev/sdhci/sdhci.h>
@ -155,6 +156,7 @@ struct bcm_sdhci_softc {
void * sc_intrhand;
struct mmc_request * sc_req;
struct sdhci_slot sc_slot;
struct mmc_fdt_helper sc_mmc_helper;
int sc_dma_ch;
bus_dma_tag_t sc_dma_tag;
bus_dmamap_t sc_dma_map;
@ -315,6 +317,7 @@ bcm_sdhci_attach(device_t dev)
sc->sc_slot.quirks = sc->conf->quirks;
sdhci_init_slot(dev, &sc->sc_slot, 0);
mmc_fdt_parse(dev, 0, &sc->sc_mmc_helper, &sc->sc_slot.host);
sc->sc_dma_ch = bcm_dma_allocate(BCM_DMA_CH_ANY);
if (sc->sc_dma_ch == BCM_DMA_CH_INVALID)
@ -388,6 +391,37 @@ bcm_sdhci_intr(void *arg)
sdhci_generic_intr(&sc->sc_slot);
}
static int
bcm_sdhci_update_ios(device_t bus, device_t child)
{
struct bcm_sdhci_softc *sc;
struct mmc_ios *ios;
int rv;
sc = device_get_softc(bus);
ios = &sc->sc_slot.host.ios;
if (ios->power_mode == power_up) {
if (sc->sc_mmc_helper.vmmc_supply)
regulator_enable(sc->sc_mmc_helper.vmmc_supply);
if (sc->sc_mmc_helper.vqmmc_supply)
regulator_enable(sc->sc_mmc_helper.vqmmc_supply);
}
rv = sdhci_generic_update_ios(bus, child);
if (rv != 0)
return (rv);
if (ios->power_mode == power_off) {
if (sc->sc_mmc_helper.vmmc_supply)
regulator_disable(sc->sc_mmc_helper.vmmc_supply);
if (sc->sc_mmc_helper.vqmmc_supply)
regulator_disable(sc->sc_mmc_helper.vqmmc_supply);
}
return (0);
}
static int
bcm_sdhci_get_ro(device_t bus, device_t child)
{
@ -787,7 +821,7 @@ static device_method_t bcm_sdhci_methods[] = {
DEVMETHOD(bus_add_child, bus_generic_add_child),
/* MMC bridge interface */
DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios),
DEVMETHOD(mmcbr_update_ios, bcm_sdhci_update_ios),
DEVMETHOD(mmcbr_request, sdhci_generic_request),
DEVMETHOD(mmcbr_get_ro, bcm_sdhci_get_ro),
DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host),