On Thu 2008-11-20 17:05:56, Trent Piepho wrote: > On Mon, 17 Nov 2008, Richard Purdie wrote: > > On Fri, 2008-10-24 at 16:09 -0700, Trent Piepho wrote: > >> + if (template->keep_state) > >> + state = !!gpio_get_value(led_dat->gpio) ^ led_dat->active_low; > >> + else > >> + state = template->default_state; > >> > >> state = of_get_property(child, "default-state", NULL); > >> led.default_state = state && !strcmp(state, "on"); > >> + led.keep_state = state && !strcmp(state, "keep"); > >> > >> +++ b/include/linux/leds.h > >> @@ -138,7 +138,8 @@ struct gpio_led { > >> const char *default_trigger; > >> unsigned gpio; > >> u8 active_low; > >> - u8 default_state; > >> + u8 default_state; /* 0 = off, 1 = on */ > >> + u8 keep_state; /* overrides default_state */ > >> }; > > > > How about something simpler here, just make default state have three > > different values - "keep", "on" and "off"? I'm not keen on having two > > different state variables like this. > > I thought of that, but it ends up being more complex. Instead of just > using: > static const struct gpio_led myled = { > .name = "something", > .keep_state = 1, > } > > You'd do something like this: > .default_state = LEDS_GPIO_DEFSTATE_KEEP, > > Is that better?
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