32 	unsigned int signal = cd->min_signal, val;  in pl080_get_signal()  local
37 	/* Return if signal is already acquired by somebody else */  in pl080_get_signal()
38 	if (signals[signal].busy &&  in pl080_get_signal()
39 			(signals[signal].val != cd->muxval)) {  in pl080_get_signal()
45 	if (!signals[signal].busy) {  in pl080_get_signal()
51 		 * value by 2 * signal number.  in pl080_get_signal()
53 		val &= ~(0x3 << (signal * 2));  in pl080_get_signal()
54 		val |= cd->muxval << (signal * 2);  in pl080_get_signal()
58 	signals[signal].busy++;  in pl080_get_signal()
59 	signals[signal].val = cd->muxval;  in pl080_get_signal()
62 	return signal;  in pl080_get_signal()
65 void pl080_put_signal(const struct pl08x_channel_data *cd, int signal)  in pl080_put_signal()  argument
71 	/* if signal is not used */  in pl080_put_signal()
72 	if (!signals[signal].busy)  in pl080_put_signal()
75 	signals[signal].busy--;  in pl080_put_signal()