Hi Shawn,
> -----Original Message----- > From: linux-mmc-ow...@vger.kernel.org [mailto:linux-mmc- > ow...@vger.kernel.org] On Behalf Of Shawn Lin > Sent: Wednesday, January 27, 2016 1:08 PM > To: Ulf Hansson <ulf.hans...@linaro.org> > Cc: bcm-kernel-feedback-l...@broadcom.com; linux-rpi- > ker...@lists.infradead.org; linux-...@vger.kernel.org; linux- > ker...@vger.kernel.org; Shawn Lin <shawn....@rock-chips.com> > Subject: [RFC PATCH 10/21] mmc: sdhci: remove > SDHCI_QUIRK_BROKEN_CARD_DETECTION > > SDHCI_QUIRK_BROKEN_CARD_DETECTION is for "broken-cd". > If we add MMC_CAP_NONREMOVABLE("non-removeble"), we shoud not add > "broken-cd" together according to mmc.txt for dt-bingdings. Also, "broken-cd" > can obtain from mmc_of_parse, which will add MMC_CAP_NEEDS_POLL into > mmc->caps. > > Signed-off-by: Shawn Lin <shawn....@rock-chips.com> > --- > > drivers/mmc/host/sdhci.c | 14 +++++--------- > 1 file changed, 5 insertions(+), 9 deletions(-) > > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index > d622435..b208cb7 100644 > --- a/drivers/mmc/host/sdhci.c > +++ b/drivers/mmc/host/sdhci.c > @@ -145,7 +145,7 @@ static void sdhci_set_card_detection(struct sdhci_host > *host, bool enable) { > u32 present; > > - if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || > + if ((host->mmc->caps & MMC_CAP_NEEDS_POLL) || > (host->mmc->caps & MMC_CAP_NONREMOVABLE)) > return; > > @@ -1618,7 +1618,8 @@ static int sdhci_do_get_cd(struct sdhci_host *host) > return 0; > > /* If nonremovable, assume that the card is always present. */ > - if (host->mmc->caps & MMC_CAP_NONREMOVABLE) > + if (host->mmc->caps & MMC_CAP_NONREMOVABLE || > + host->mmc->caps & MMC_CAP_NEEDS_POLL) > return 1; > > /* > @@ -1628,10 +1629,6 @@ static int sdhci_do_get_cd(struct sdhci_host *host) > if (!IS_ERR_VALUE(gpio_cd)) > return !!gpio_cd; > > - /* If polling, assume that the card is always present. */ > - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) > - return 1; Why simply remove these code rather than use this: If(host->mmc->caps & MMC_CAP_NEEDS_POLL) Return 1; According to the comment, if polling, need to return 1, But if you just simply remove this code, it will read the sdhci register SDHCI_PRESENT_STATE Best Regards Haibo Chen > - > /* Host native card detect */ > return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & > SDHCI_CARD_PRESENT); } @@ -2658,7 +2655,7 @@ void > sdhci_enable_irq_wakeups(struct sdhci_host *host) > val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); > val |= mask ; > /* Avoid fake wake up */ > - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) > + if (host->mmc->caps & MMC_CAP_NEEDS_POLL) > val &= ~(SDHCI_WAKE_ON_INSERT | > SDHCI_WAKE_ON_REMOVE); > sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); } @@ -3112,8 > +3109,7 @@ int sdhci_add_host(struct sdhci_host *host) > if (caps[0] & SDHCI_CAN_DO_HISPD) > mmc->caps |= MMC_CAP_SD_HIGHSPEED | > MMC_CAP_MMC_HIGHSPEED; > > - if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) && > - !(mmc->caps & MMC_CAP_NONREMOVABLE) && > + if (!(mmc->caps & MMC_CAP_NONREMOVABLE) && > IS_ERR_VALUE(mmc_gpio_get_cd(host->mmc))) > mmc->caps |= MMC_CAP_NEEDS_POLL; > > -- > 2.3.7 > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
