mmc: mxs-mmc: Add wp-inverted property
The write-protect GPIO is inverted on some boards. Handle such case. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
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@ -164,16 +164,23 @@ struct mxs_mmc_host {
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spinlock_t lock;
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int sdio_irq_en;
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int wp_gpio;
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bool wp_inverted;
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};
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static int mxs_mmc_get_ro(struct mmc_host *mmc)
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{
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struct mxs_mmc_host *host = mmc_priv(mmc);
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int ret;
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if (!gpio_is_valid(host->wp_gpio))
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return -EINVAL;
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return gpio_get_value(host->wp_gpio);
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ret = gpio_get_value(host->wp_gpio);
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if (host->wp_inverted)
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ret = !ret;
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return ret;
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}
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static int mxs_mmc_get_cd(struct mmc_host *mmc)
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@ -708,6 +715,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
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int ret = 0, irq_err, irq_dma;
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dma_cap_mask_t mask;
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struct regulator *reg_vmmc;
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enum of_gpio_flags flags;
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iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
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@ -796,7 +804,10 @@ static int mxs_mmc_probe(struct platform_device *pdev)
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mmc->caps |= MMC_CAP_4_BIT_DATA;
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else if (bus_width == 8)
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mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
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host->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
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host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0,
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&flags);
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if (flags & OF_GPIO_ACTIVE_LOW)
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host->wp_inverted = 1;
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} else {
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if (pdata->flags & SLOTF_8_BIT_CAPABLE)
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mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
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