Messages in this thread Patch in this message | | | Date | Fri, 02 Feb 2007 08:54:58 +0100 | From | Pierre Ossman <> | Subject | Re: [Sdhci-devel] [PATCH 2.6.20-rc2] Add a quirk to allow ENE PCI SD card readers to work again |
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Hi Darren,
It has come to my attention that the current routine for setting power is not compliant with the specification. As such, I'd like you to try the following and see if removes the need for your patch:
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index dc1b04a..13ac2fe 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -685,23 +690,21 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) if (power == (unsigned short)-1) goto out;
- pwr = SDHCI_POWER_ON; - switch (power) { case MMC_VDD_170: case MMC_VDD_180: case MMC_VDD_190: - pwr |= SDHCI_POWER_180; + pwr = SDHCI_POWER_180; break; case MMC_VDD_290: case MMC_VDD_300: case MMC_VDD_310: - pwr |= SDHCI_POWER_300; + pwr = SDHCI_POWER_300; break; case MMC_VDD_320: case MMC_VDD_330: case MMC_VDD_340: - pwr |= SDHCI_POWER_330; + pwr = SDHCI_POWER_330; break; default: BUG(); @@ -709,6 +712,10 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
+ pwr |= SDHCI_POWER_ON; + + writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL); + out: host->power = power; }
I'd appreciate if you could test this sooner rather than later as the merge window is just around the corner.
Rgds -- -- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org PulseAudio, core developer http://pulseaudio.org rdesktop, core developer http://www.rdesktop.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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