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| author | imp <imp@FreeBSD.org> | 2014-02-09 21:01:10 +0000 |
|---|---|---|
| committer | imp <imp@FreeBSD.org> | 2014-02-09 21:01:10 +0000 |
| commit | bdaa9ef2459fdc4e3a8cbe7bc5c0e8581df5c627 (patch) | |
| tree | 70435a7395d8228d177cb08b3abe025d91b81020 | |
| parent | da8067e1635e97f16ee8be7b7afc78cf899fc467 (diff) | |
| download | FreeBSD-src-bdaa9ef2459fdc4e3a8cbe7bc5c0e8581df5c627.zip FreeBSD-src-bdaa9ef2459fdc4e3a8cbe7bc5c0e8581df5c627.tar.gz | |
Add TWI attachment for FDT. We're only matching the SAMG20 device for
now, others to follow.
| -rw-r--r-- | sys/arm/at91/at91_twi.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sys/arm/at91/at91_twi.c b/sys/arm/at91/at91_twi.c index 523f23e..559200c 100644 --- a/sys/arm/at91/at91_twi.c +++ b/sys/arm/at91/at91_twi.c @@ -23,6 +23,8 @@ * SUCH DAMAGE. */ +#include "opt_platform.h" + #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); @@ -46,6 +48,12 @@ __FBSDID("$FreeBSD$"); #include <dev/iicbus/iicbus.h> #include "iicbus_if.h" +#ifdef FDT +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> +#endif + #define TWI_SLOW_CLOCK 1500 #define TWI_FAST_CLOCK 45000 #define TWI_FASTEST_CLOCK 90000 @@ -104,7 +112,11 @@ static void at91_twi_deactivate(device_t dev); static int at91_twi_probe(device_t dev) { - +#ifdef FDT + /* XXXX need a whole list, since there's at least 4 different ones */ + if (!ofw_bus_is_compatible(dev, "atmel,at91sam9g20-i2c")) + return (ENXIO); +#endif device_set_desc(dev, "TWI"); return (0); } @@ -397,7 +409,12 @@ static driver_t at91_twi_driver = { sizeof(struct at91_twi_softc), }; +#ifdef FDT +DRIVER_MODULE(at91_twi, simplebus, at91_twi_driver, at91_twi_devclass, NULL, + NULL); +#else DRIVER_MODULE(at91_twi, atmelarm, at91_twi_driver, at91_twi_devclass, NULL, NULL); +#endif DRIVER_MODULE(iicbus, at91_twi, iicbus_driver, iicbus_devclass, NULL, NULL); MODULE_DEPEND(at91_twi, iicbus, 1, 1, 1); |
