37 #define SW_END		8	/* Number of bits before end of packet to kick */
41 #define SW_LENGTH	512	/* Max number of bits in a packet */
76 	{ 10, 10,  9, 10,  1,  1 },
78 	{ 10, 10,  6,  7,  1,  1 },
79 	{ 10, 10,  6,  7,  1,  1 },
80 	{ 10, 10,  6,  1,  1     },
81 	{ 10,  7,  7,  1,  1     }};
103 	int bits;  member
191  * sw_get_bits() and GB() compose bits from the triplet buffer into a __u64.
193  * of bits to be read, 'shift' is offset in the resulting __u64 to start at, bits
194  * is number of bits per triplet.
197 #define GB(pos,num) sw_get_bits(buf, pos, num, sw->bits)
199 static __u64 sw_get_bits(unsigned char *buf, int pos, int num, char bits)  in sw_get_bits()  argument
202 	int tri = pos % bits;						/* Start position */  in sw_get_bits()
203 	int i   = pos / bits;  in sw_get_bits()
208 		if (tri == bits) {  in sw_get_bits()
260  * sw_ccheck() checks synchronization bits and computes checksum of nibbles.
325 				for (j = 0; j < 10; j++)  in sw_parse()
340 			input_report_abs(dev, ABS_X,        GB( 9,10));  in sw_parse()
341 			input_report_abs(dev, ABS_Y,        GB(19,10));  in sw_parse()
361 			input_report_abs(dev, ABS_X,        GB( 0,10));  in sw_parse()
362 			input_report_abs(dev, ABS_Y,        GB(16,10));  in sw_parse()
369 				input_report_key(dev, sw_btn[SW_ID_FSP][j], !GB(j+10,1));  in sw_parse()
386 			input_report_abs(dev, ABS_RX,       GB( 0,10));  in sw_parse()
387 			input_report_abs(dev, ABS_RUDDER,   GB(10, 6));  in sw_parse()
510 static void sw_print_packet(char *name, int length, unsigned char *buf, char bits)  in sw_print_packet()  argument
514 	printk(KERN_INFO "sidewinder.c: %s packet, %d bits. [", name, length);  in sw_print_packet()
516 		printk("%x", (int)sw_get_bits(buf, i << 2, 4, bits));  in sw_print_packet()
547  * sw_guess_mode() checks the upper two button bits for toggling -
644 		if (i > l) {						/* Longer? As we can only lose bits, it makes */  in sw_connect()
651 			sw->bits = m;  in sw_connect()
686 					sw->bits = 3;  in sw_connect()
722 		int bits, code;  in sw_connect()  local
750 		for (j = 0; (bits = sw_bit[sw->type][j]); j++) {  in sw_connect()
754 			min = bits == 1 ? -1 : 0;  in sw_connect()
755 			max = (1 << bits) - 1;  in sw_connect()
756 			fuzz = (bits >> 1) >= 2 ? 1 << ((bits >> 1) - 2) : 0;  in sw_connect()
757 			flat = code == ABS_THROTTLE || bits < 5 ?  in sw_connect()
758 				0 : 1 << (bits - 5);  in sw_connect()