diff options
| author | Esben Haabendal <eha@doredevelopment.dk> | 2011-03-07 20:45:28 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-03-07 20:45:28 -0700 |
| commit | 290293eda2c6dd368476d71433bdef07c39a6829 (patch) | |
| tree | 3bc7815356d324774f85526ea18586e37146bb38 /drivers/mmc/host/of_mmc_spi.c | |
| parent | adef658ddf71e709eb1bdc181b86c62b933b967b (diff) | |
| download | linux-290293eda2c6dd368476d71433bdef07c39a6829.tar.bz2 | |
of_mmc_spi: add card detect irq support
Signed-off-by: Esben Haabendal <eha@doredevelopment.dk>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/mmc/host/of_mmc_spi.c')
| -rw-r--r-- | drivers/mmc/host/of_mmc_spi.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c index 1247e5de9faa..5530def54e5b 100644 --- a/drivers/mmc/host/of_mmc_spi.c +++ b/drivers/mmc/host/of_mmc_spi.c @@ -34,6 +34,7 @@ enum { struct of_mmc_spi { int gpios[NUM_GPIOS]; bool alow_gpios[NUM_GPIOS]; + int detect_irq; struct mmc_spi_platform_data pdata; }; @@ -61,6 +62,22 @@ static int of_mmc_spi_get_ro(struct device *dev) return of_mmc_spi_read_gpio(dev, WP_GPIO); } +static int of_mmc_spi_init(struct device *dev, + irqreturn_t (*irqhandler)(int, void *), void *mmc) +{ + struct of_mmc_spi *oms = to_of_mmc_spi(dev); + + return request_threaded_irq(oms->detect_irq, NULL, irqhandler, 0, + dev_name(dev), mmc); +} + +static void of_mmc_spi_exit(struct device *dev, void *mmc) +{ + struct of_mmc_spi *oms = to_of_mmc_spi(dev); + + free_irq(oms->detect_irq, mmc); +} + struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) { struct device *dev = &spi->dev; @@ -121,8 +138,13 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) if (gpio_is_valid(oms->gpios[WP_GPIO])) oms->pdata.get_ro = of_mmc_spi_get_ro; - /* We don't support interrupts yet, let's poll. */ - oms->pdata.caps |= MMC_CAP_NEEDS_POLL; + oms->detect_irq = irq_of_parse_and_map(np, 0); + if (oms->detect_irq != NO_IRQ) { + oms->pdata.init = of_mmc_spi_init; + oms->pdata.exit = of_mmc_spi_exit; + } else { + oms->pdata.caps |= MMC_CAP_NEEDS_POLL; + } dev->platform_data = &oms->pdata; return dev->platform_data; |