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    Subject[PATCH 1/2] mmc: sdhci: Added set_power sdhci_ops handler.
    Date
    From: "Felipe F. Tonello" <eu@felipetonello.com>

    This is useful for power managment purposes if a sdhci child host wants to
    turn off some other peripheral also.

    Signed-off-by: Felipe F. Tonello <eu@felipetonello.com>
    ---
    drivers/mmc/host/sdhci.c | 8 ++++++++
    drivers/mmc/host/sdhci.h | 1 +
    2 files changed, 9 insertions(+)

    diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
    index 2ea429c..0a026c6 100644
    --- a/drivers/mmc/host/sdhci.c
    +++ b/drivers/mmc/host/sdhci.c
    @@ -1244,6 +1244,10 @@ static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
    u8 pwr = 0;

    if (power != (unsigned short)-1) {
    +
    + if (host->ops->set_power)
    + host->ops->set_power(host, true);
    +
    switch (1 << power) {
    case MMC_VDD_165_195:
    pwr = SDHCI_POWER_180;
    @@ -1259,6 +1263,10 @@ static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
    default:
    BUG();
    }
    + } else {
    +
    + if (host->ops->set_power)
    + host->ops->set_power(host, false);
    }

    if (host->pwr == pwr)
    diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
    index 379e09d..293d56d 100644
    --- a/drivers/mmc/host/sdhci.h
    +++ b/drivers/mmc/host/sdhci.h
    @@ -294,6 +294,7 @@ struct sdhci_ops {
    void (*platform_resume)(struct sdhci_host *host);
    void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
    void (*platform_init)(struct sdhci_host *host);
    + void (*set_power)(struct sdhci_host *host, bool power);
    };

    #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
    --
    1.8.1.4


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