The driver has open-coded test for SDIO cards. Use the mmc core provided MMC_QUIRK_BROKEN_CLK_GATING flag instead.
As a bonus this may enable clock gating on SDIO cards that are known to work with it. Signed-off-by: Michal Suchanek <[email protected]> --- drivers/mmc/host/dw_mmc.c | 33 +++++++++++++++------------------ 1 file changed, 15 insertions(+), 18 deletions(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 40e9d8e..3bc9fd7 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1335,27 +1335,24 @@ static void dw_mci_init_card(struct mmc_host *mmc, struct mmc_card *card) * description of the CLKENA register we should disable low power mode * for SDIO cards if we need SDIO interrupts to work. */ - if (mmc->caps & MMC_CAP_SDIO_IRQ) { - const u32 clken_low_pwr = SDMMC_CLKEN_LOW_PWR << slot->id; - u32 clk_en_a_old; - u32 clk_en_a; + const u32 clken_low_pwr = SDMMC_CLKEN_LOW_PWR << slot->id; + u32 clk_en_a_old; + u32 clk_en_a; - clk_en_a_old = mci_readl(host, CLKENA); + clk_en_a_old = mci_readl(host, CLKENA); - if (card->type == MMC_TYPE_SDIO || - card->type == MMC_TYPE_SD_COMBO) { - set_bit(DW_MMC_CARD_NO_LOW_PWR, &slot->flags); - clk_en_a = clk_en_a_old & ~clken_low_pwr; - } else { - clear_bit(DW_MMC_CARD_NO_LOW_PWR, &slot->flags); - clk_en_a = clk_en_a_old | clken_low_pwr; - } + if (card->quirks & MMC_QUIRK_BROKEN_CLK_GATING) { + set_bit(DW_MMC_CARD_NO_LOW_PWR, &slot->flags); + clk_en_a = clk_en_a_old & ~clken_low_pwr; + } else { + clear_bit(DW_MMC_CARD_NO_LOW_PWR, &slot->flags); + clk_en_a = clk_en_a_old | clken_low_pwr; + } - if (clk_en_a != clk_en_a_old) { - mci_writel(host, CLKENA, clk_en_a); - mci_send_cmd(slot, SDMMC_CMD_UPD_CLK | - SDMMC_CMD_PRV_DAT_WAIT, 0); - } + if (clk_en_a != clk_en_a_old) { + mci_writel(host, CLKENA, clk_en_a); + mci_send_cmd(slot, SDMMC_CMD_UPD_CLK | + SDMMC_CMD_PRV_DAT_WAIT, 0); } } -- 2.1.4 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
