svn commit: r363637 - head/sys/arm/broadcom/bcm2835
Andrew Turner
andrew at FreeBSD.org
Tue Jul 28 09:46:59 UTC 2020
Author: andrew
Date: Tue Jul 28 09:46:58 2020
New Revision: 363637
URL: https://svnweb.freebsd.org/changeset/base/363637
Log:
Enable use of the regulator in the Broadcom SDHCI controller
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
Modified:
head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
Modified: head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
==============================================================================
--- head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c Tue Jul 28 09:29:56 2020 (r363636)
+++ head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c Tue Jul 28 09:46:58 2020 (r363637)
@@ -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)
@@ -389,6 +392,37 @@ bcm_sdhci_intr(void *arg)
}
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),
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