@@ -1832,6 +1832,10 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
ctrl |= SDHCI_CTRL_VDD_180;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+ /* Some controller need to do more when switching */
+ if (host->ops->voltage_switch)
+ host->ops->voltage_switch(host);
+
/* 1.8V regulator output should be stable within 5 ms */
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (ctrl & SDHCI_CTRL_VDD_180)
@@ -339,6 +339,7 @@ struct sdhci_ops {
void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
void (*platform_init)(struct sdhci_host *host);
void (*card_event)(struct sdhci_host *host);
+ void (*voltage_switch)(struct sdhci_host *host);
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
This patch adds a callback function to do controller-specific actions when switching voltages. It is a preparation and will be used by Fujitsu SDHCI controller f_sdh30 driver. Signed-off-by: Vincent Yang <Vincent.Yang@tw.fujitsu.com> --- drivers/mmc/host/sdhci.c | 4 ++++ drivers/mmc/host/sdhci.h | 1 + 2 files changed, 5 insertions(+)