From 5e1a5939929b3ae8ec6f7e44ddd1b51b3c542cc6 Mon Sep 17 00:00:00 2001 From: loos Date: Sat, 31 Jan 2015 19:32:14 +0000 Subject: 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. --- sys/arm/altera/socfpga/socfpga_gpio.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'sys/arm/altera') diff --git a/sys/arm/altera/socfpga/socfpga_gpio.c b/sys/arm/altera/socfpga/socfpga_gpio.c index 1a50c7c..7cec0c1 100644 --- a/sys/arm/altera/socfpga/socfpga_gpio.c +++ b/sys/arm/altera/socfpga/socfpga_gpio.c @@ -55,6 +55,7 @@ __FBSDID("$FreeBSD$"); #include #include +#include #include #include #include @@ -107,6 +108,7 @@ enum port_no { /* * GPIO interface */ +static device_t socfpga_gpio_get_bus(device_t); static int socfpga_gpio_pin_max(device_t, int *); static int socfpga_gpio_pin_getcaps(device_t, uint32_t, uint32_t *); static int socfpga_gpio_pin_getname(device_t, uint32_t, char *); @@ -122,6 +124,7 @@ struct socfpga_gpio_softc { bus_space_handle_t bsh; device_t dev; + device_t busdev; struct mtx sc_mtx; int gpio_npins; struct gpio_pin gpio_pins[NR_GPIO_MAX]; @@ -196,11 +199,24 @@ socfpga_gpio_attach(device_t dev) snprintf(sc->gpio_pins[i].gp_name, GPIOMAXNAME, "socfpga_gpio%d.%d", device_get_unit(dev), i); } + sc->busdev = gpiobus_attach_bus(dev); + if (sc->busdev == NULL) { + bus_release_resources(dev, socfpga_gpio_spec, sc->res); + mtx_destroy(&sc->sc_mtx); + return (ENXIO); + } + + return (0); +} - device_add_child(dev, "gpioc", -1); - device_add_child(dev, "gpiobus", -1); +static device_t +socfpga_gpio_get_bus(device_t dev) +{ + struct socfpga_gpio_softc *sc; + + sc = device_get_softc(dev); - return (bus_generic_attach(dev)); + return (sc->busdev); } static int @@ -415,6 +431,7 @@ static device_method_t socfpga_gpio_methods[] = { DEVMETHOD(device_attach, socfpga_gpio_attach), /* GPIO protocol */ + DEVMETHOD(gpio_get_bus, socfpga_gpio_get_bus), DEVMETHOD(gpio_pin_max, socfpga_gpio_pin_max), DEVMETHOD(gpio_pin_getname, socfpga_gpio_pin_getname), DEVMETHOD(gpio_pin_getcaps, socfpga_gpio_pin_getcaps), -- cgit v1.1