diff options
| author | Alexander Aring <alex.aring@gmail.com> | 2014-03-15 08:29:07 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-17 20:10:26 (GMT) |
| commit | fa2d3e9471b37c2d3cd3cede73065b3b867532ee (patch) | |
| tree | d270f7dfd7c419a4427e1cad5e92d60bd746110a /drivers | |
| parent | 3fa275712489d31171b612a9a83e7b9840c6364e (diff) | |
| download | linux-fa2d3e9471b37c2d3cd3cede73065b3b867532ee.tar.xz | |
at86rf230: add support for devicetree
This patch adds devicetree support for the at86rf230 driver.
Possible gpios to configure are "reset-gpio" and "sleep-gpio".
Also add support to configure the "irq-type" for the irq polarity
register.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ieee802154/at86rf230.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c index 47677e3f9..e8004ef 100644 --- a/drivers/net/ieee802154/at86rf230.c +++ b/drivers/net/ieee802154/at86rf230.c @@ -31,6 +31,7 @@ #include <linux/spi/spi.h> #include <linux/spi/at86rf230.h> #include <linux/skbuff.h> +#include <linux/of_gpio.h> #include <net/mac802154.h> #include <net/wpan-phy.h> @@ -1035,6 +1036,40 @@ static int at86rf230_hw_init(struct at86rf230_local *lp) return 0; } +static struct at86rf230_platform_data * +at86rf230_get_pdata(struct spi_device *spi) +{ + struct at86rf230_platform_data *pdata; + const char *irq_type; + + if (!IS_ENABLED(CONFIG_OF) || !spi->dev.of_node) + return spi->dev.platform_data; + + pdata = devm_kzalloc(&spi->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + goto done; + + pdata->rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0); + pdata->slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0); + + pdata->irq_type = IRQF_TRIGGER_RISING; + of_property_read_string(spi->dev.of_node, "irq-type", &irq_type); + if (!strcmp(irq_type, "level-high")) + pdata->irq_type = IRQF_TRIGGER_HIGH; + else if (!strcmp(irq_type, "level-low")) + pdata->irq_type = IRQF_TRIGGER_LOW; + else if (!strcmp(irq_type, "edge-rising")) + pdata->irq_type = IRQF_TRIGGER_RISING; + else if (!strcmp(irq_type, "edge-falling")) + pdata->irq_type = IRQF_TRIGGER_FALLING; + else + dev_warn(&spi->dev, "wrong irq-type specified using edge-rising\n"); + + spi->dev.platform_data = pdata; +done: + return pdata; +} + static int at86rf230_probe(struct spi_device *spi) { struct at86rf230_platform_data *pdata; @@ -1053,7 +1088,7 @@ static int at86rf230_probe(struct spi_device *spi) return -EINVAL; } - pdata = spi->dev.platform_data; + pdata = at86rf230_get_pdata(spi); if (!pdata) { dev_err(&spi->dev, "no platform_data\n"); return -EINVAL; @@ -1231,8 +1266,19 @@ static int at86rf230_remove(struct spi_device *spi) return 0; } +#if IS_ENABLED(CONFIG_OF) +static struct of_device_id at86rf230_of_match[] = { + { .compatible = "atmel,at86rf230", }, + { .compatible = "atmel,at86rf231", }, + { .compatible = "atmel,at86rf233", }, + { .compatible = "atmel,at86rf212", }, + { }, +}; +#endif + static struct spi_driver at86rf230_driver = { .driver = { + .of_match_table = of_match_ptr(at86rf230_of_match), .name = "at86rf230", .owner = THIS_MODULE, }, |