sdhci-of: don't hard-code inverted write-protect quirk
MPC85xx SOCs have normal write-protect state reporting, so we shouldn't hard-code the quirk. Instead, look for "sdhci,wp-inverted" property, plus check for mpc837x_{rdb,mds} machines since older device trees don't specify the new property. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Pierre Ossman <pierre@ossman.eu> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: David Vrabel <david.vrabel@csr.com> Cc: Ben Dooks <ben@fluff.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 13 additions and 1 deletions
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@ -21,6 +21,7 @@
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/mmc/host.h>
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#include <asm/machdep.h>
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#include "sdhci.h"
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struct sdhci_of_data {
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@ -175,7 +176,6 @@ static unsigned int esdhc_get_min_clock(struct sdhci_host *host)
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static struct sdhci_of_data sdhci_esdhc = {
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.quirks = SDHCI_QUIRK_FORCE_BLK_SZ_2048 |
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SDHCI_QUIRK_BROKEN_CARD_DETECTION |
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SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
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SDHCI_QUIRK_NO_BUSY_IRQ |
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SDHCI_QUIRK_NONSTANDARD_CLOCK |
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SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
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@ -219,6 +219,15 @@ static int sdhci_of_resume(struct of_device *ofdev)
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#endif
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static bool __devinit sdhci_of_wp_inverted(struct device_node *np)
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{
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if (of_get_property(np, "sdhci,wp-inverted", NULL))
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return true;
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/* Old device trees don't have the wp-inverted property. */
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return machine_is(mpc837x_rdb) || machine_is(mpc837x_mds);
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}
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static int __devinit sdhci_of_probe(struct of_device *ofdev,
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const struct of_device_id *match)
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{
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@ -261,6 +270,9 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev,
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if (of_get_property(np, "sdhci,1-bit-only", NULL))
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host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
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if (sdhci_of_wp_inverted(np))
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host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;
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clk = of_get_property(np, "clock-frequency", &size);
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if (clk && size == sizeof(*clk) && *clk)
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of_host->clock = *clk;
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