diff options
| author | loos <loos@FreeBSD.org> | 2015-01-31 19:32:14 +0000 |
|---|---|---|
| committer | loos <loos@FreeBSD.org> | 2015-01-31 19:32:14 +0000 |
| commit | 5e1a5939929b3ae8ec6f7e44ddd1b51b3c542cc6 (patch) | |
| tree | 4edc5f6a6f697cb6c391fc6f0800ce835ba4024d /sys/arm/lpc | |
| parent | 92c5395dfebe86676461d4e940ccf2b4249770e5 (diff) | |
| download | FreeBSD-src-5e1a5939929b3ae8ec6f7e44ddd1b51b3c542cc6.zip FreeBSD-src-5e1a5939929b3ae8ec6f7e44ddd1b51b3c542cc6.tar.gz | |
Implement GPIO_GET_BUS() method for all GPIO drivers.
Add helper routines to deal with attach and detach of gpiobus and gpioc
devices that are common to all drivers.
Diffstat (limited to 'sys/arm/lpc')
| -rw-r--r-- | sys/arm/lpc/lpc_gpio.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/sys/arm/lpc/lpc_gpio.c b/sys/arm/lpc/lpc_gpio.c index d9536a7..88f37b6 100644 --- a/sys/arm/lpc/lpc_gpio.c +++ b/sys/arm/lpc/lpc_gpio.c @@ -79,6 +79,7 @@ __FBSDID("$FreeBSD$"); #include <machine/intr.h> #include <machine/fdt.h> +#include <dev/gpio/gpiobusvar.h> #include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus_subr.h> @@ -90,6 +91,7 @@ __FBSDID("$FreeBSD$"); struct lpc_gpio_softc { device_t lg_dev; + device_t lg_busdev; struct resource * lg_res; bus_space_tag_t lg_bst; bus_space_handle_t lg_bsh; @@ -135,6 +137,7 @@ static int lpc_gpio_probe(device_t); static int lpc_gpio_attach(device_t); static int lpc_gpio_detach(device_t); +static device_t lpc_gpio_get_bus(device_t); static int lpc_gpio_pin_max(device_t, int *); static int lpc_gpio_pin_getcaps(device_t, uint32_t, uint32_t *); static int lpc_gpio_pin_getflags(device_t, uint32_t, uint32_t *); @@ -192,10 +195,13 @@ lpc_gpio_attach(device_t dev) lpc_gpio_sc = sc; - device_add_child(dev, "gpioc", -1); - device_add_child(dev, "gpiobus", -1); + sc->lg_busdev = gpiobus_attach_bus(dev); + if (sc->lg_busdev == NULL) { + bus_release_resource(dev, SYS_RES_MEMORY, rid, sc->lg_res); + return (ENXIO); + } - return (bus_generic_attach(dev)); + return (0); } static int @@ -204,6 +210,16 @@ lpc_gpio_detach(device_t dev) return (EBUSY); } +static device_t +lpc_gpio_get_bus(device_t dev) +{ + struct lpc_gpio_softc *sc; + + sc = device_get_softc(dev); + + return (sc->lg_busdev); +} + static int lpc_gpio_pin_max(device_t dev, int *npins) { @@ -527,6 +543,7 @@ static device_method_t lpc_gpio_methods[] = { DEVMETHOD(device_detach, lpc_gpio_detach), /* GPIO interface */ + DEVMETHOD(gpio_get_bus, lpc_gpio_get_bus), DEVMETHOD(gpio_pin_max, lpc_gpio_pin_max), DEVMETHOD(gpio_pin_getcaps, lpc_gpio_pin_getcaps), DEVMETHOD(gpio_pin_getflags, lpc_gpio_pin_getflags), |
