51 static int clear_epp_timeout(struct parport *pb)  in clear_epp_timeout()  argument
55 	if (!(parport_gsc_read_status(pb) & 0x01))  in clear_epp_timeout()
59 	parport_gsc_read_status(pb);  in clear_epp_timeout()
60 	r = parport_gsc_read_status(pb);  in clear_epp_timeout()
61 	parport_writeb (r | 0x01, STATUS (pb)); /* Some reset by writing 1 */  in clear_epp_timeout()
62 	parport_writeb (r & 0xfe, STATUS (pb)); /* Others by writing 0 */  in clear_epp_timeout()
63 	r = parport_gsc_read_status(pb);  in clear_epp_timeout()
133 static int parport_SPP_supported(struct parport *pb)  in parport_SPP_supported()  argument
143 	clear_epp_timeout(pb);  in parport_SPP_supported()
147 	parport_writeb (w, CONTROL (pb));  in parport_SPP_supported()
154 	r = parport_readb (CONTROL (pb));  in parport_SPP_supported()
157 		parport_writeb (w, CONTROL (pb));  in parport_SPP_supported()
158 		r = parport_readb (CONTROL (pb));  in parport_SPP_supported()
159 		parport_writeb (0xc, CONTROL (pb));  in parport_SPP_supported()
167 	parport_gsc_write_data (pb, w);  in parport_SPP_supported()
168 	r = parport_gsc_read_data (pb);  in parport_SPP_supported()
171 		parport_gsc_write_data (pb, w);  in parport_SPP_supported()
172 		r = parport_gsc_read_data (pb);  in parport_SPP_supported()
197 static int parport_PS2_supported(struct parport *pb)  in parport_PS2_supported()  argument
201 	clear_epp_timeout(pb);  in parport_PS2_supported()
204 	parport_gsc_data_reverse (pb);  in parport_PS2_supported()
206 	parport_gsc_write_data(pb, 0x55);  in parport_PS2_supported()
207 	if (parport_gsc_read_data(pb) != 0x55) ok++;  in parport_PS2_supported()
209 	parport_gsc_write_data(pb, 0xaa);  in parport_PS2_supported()
210 	if (parport_gsc_read_data(pb) != 0xaa) ok++;  in parport_PS2_supported()
213 	parport_gsc_data_forward (pb);  in parport_PS2_supported()
216 		pb->modes |= PARPORT_MODE_TRISTATE;  in parport_PS2_supported()
218 		struct parport_gsc_private *priv = pb->private_data;  in parport_PS2_supported()