74 static inline void qcam_set_ack(struct qcam_device *qcam, unsigned int i)  in qcam_set_ack()  argument
78 	parport_frob_control(qcam->pport, 8, i?8:0);  in qcam_set_ack()
81 static inline unsigned int qcam_ready1(struct qcam_device *qcam)  in qcam_ready1()  argument
83 	return (parport_read_status(qcam->pport) & 0x8)?1:0;  in qcam_ready1()
86 static inline unsigned int qcam_ready2(struct qcam_device *qcam)  in qcam_ready2()  argument
88 	return (parport_read_data(qcam->pport) & 0x1)?1:0;  in qcam_ready2()
91 static unsigned int qcam_await_ready1(struct qcam_device *qcam,   in qcam_await_ready1()  argument
98 		if (qcam_ready1(qcam) == value)  in qcam_await_ready1()
105 		if (qcam_ready1(qcam) == value)  in qcam_await_ready1()
113 	       parport_read_status(qcam->pport),  in qcam_await_ready1()
114 	       parport_read_control(qcam->pport));  in qcam_await_ready1()
118 static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value)  in qcam_await_ready2()  argument
124 		if (qcam_ready2(qcam) == value)  in qcam_await_ready2()
131 		if (qcam_ready2(qcam) == value)  in qcam_await_ready2()
139 	       parport_read_status(qcam->pport),  in qcam_await_ready2()
140 	       parport_read_control(qcam->pport),  in qcam_await_ready2()
141 	       parport_read_data(qcam->pport));  in qcam_await_ready2()
145 static int qcam_read_data(struct qcam_device *qcam)  in qcam_read_data()  argument
148 	qcam_set_ack(qcam, 0);  in qcam_read_data()
149 	if (qcam_await_ready1(qcam, 1)) return -1;  in qcam_read_data()
150 	idata = parport_read_status(qcam->pport) & 0xf0;  in qcam_read_data()
151 	qcam_set_ack(qcam, 1);  in qcam_read_data()
152 	if (qcam_await_ready1(qcam, 0)) return -1;  in qcam_read_data()
153 	idata |= (parport_read_status(qcam->pport) >> 4);  in qcam_read_data()
157 static int qcam_write_data(struct qcam_device *qcam, unsigned int data)  in qcam_write_data()  argument
160 	parport_write_data(qcam->pport, data);  in qcam_write_data()
161 	idata = qcam_read_data(qcam);  in qcam_write_data()
171 static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned int data)  in qcam_set()  argument
173 	if (qcam_write_data(qcam, cmd))  in qcam_set()
175 	if (qcam_write_data(qcam, data))  in qcam_set()
180 static inline int qcam_get(struct qcam_device *qcam, unsigned int cmd)  in qcam_get()  argument
182 	if (qcam_write_data(qcam, cmd))  in qcam_get()
184 	return qcam_read_data(qcam);  in qcam_get()
187 static int qc_detect(struct qcam_device *qcam)  in qc_detect()  argument
196 	if (qcam->pport->probe_info[0].class == PARPORT_CLASS_MEDIA  in qc_detect()
197 	    && qcam->pport->probe_info[0].model  in qc_detect()
198 	    && !strcmp(qcam->pdev->port->probe_info[0].model,   in qc_detect()
207 	parport_write_control(qcam->pport, 0xc);  in qc_detect()
210 	ostat = stat = parport_read_status(qcam->pport);  in qc_detect()
214 		stat = parport_read_status(qcam->pport);  in qc_detect()
223 	parport_write_control(qcam->pport, 0xc);  in qc_detect()
224 	parport_write_control(qcam->pport, 0x8);  in qc_detect()
226 	parport_write_control(qcam->pport, 0xc);  in qc_detect()
230 	ostat = stat = parport_read_status(qcam->pport);  in qc_detect()
234 		stat = parport_read_status(qcam->pport);  in qc_detect()
246 static void qc_reset(struct qcam_device *qcam)  in qc_reset()  argument
248 	parport_write_control(qcam->pport, 0xc);  in qc_reset()
249 	parport_write_control(qcam->pport, 0x8);  in qc_reset()
251 	parport_write_control(qcam->pport, 0xc);  in qc_reset()
518 	struct qcam_device *qcam=(struct qcam_device *)dev;  in qcam_ioctl()  local
594 			p.brightness=qcam->brightness<<8;  in qcam_ioctl()
595 			p.contrast=qcam->contrast<<8;  in qcam_ioctl()
596 			p.whiteness=qcam->whitebal<<8;  in qcam_ioctl()
618 			qcam->brightness = p.brightness>>8;  in qcam_ioctl()
619 			qcam->contrast = p.contrast>>8;  in qcam_ioctl()
620 			qcam->whitebal = p.whiteness>>8;  in qcam_ioctl()
622 			down(&qcam->lock);			  in qcam_ioctl()
623 			parport_claim_or_block(qcam->pdev);  in qcam_ioctl()
624 			qc_setup(qcam);   in qcam_ioctl()
625 			parport_release(qcam->pdev);  in qcam_ioctl()
626 			up(&qcam->lock);  in qcam_ioctl()
644 			qcam->width = 80;  in qcam_ioctl()
645 			qcam->height = 60;  in qcam_ioctl()
646 			qcam->mode = QC_DECIMATION_4;  in qcam_ioctl()
650 				qcam->width = 160;  in qcam_ioctl()
651 				qcam->height = 120;  in qcam_ioctl()
652 				qcam->mode = QC_DECIMATION_2;  in qcam_ioctl()
656 				qcam->width = 320;  in qcam_ioctl()
657 				qcam->height = 240;  in qcam_ioctl()
658 				qcam->mode = QC_DECIMATION_1;  in qcam_ioctl()
660 			qcam->mode |= QC_MILLIONS;  in qcam_ioctl()
664 				qcam->width = 640;  in qcam_ioctl()
665 				qcam->height = 480;  in qcam_ioctl()
666 				qcam->mode = QC_BILLIONS | QC_DECIMATION_1;  in qcam_ioctl()
671 			down(&qcam->lock);  in qcam_ioctl()
672 			parport_claim_or_block(qcam->pdev);  in qcam_ioctl()
673 			qc_setup(qcam);  in qcam_ioctl()
674 			parport_release(qcam->pdev);  in qcam_ioctl()
675 			up(&qcam->lock);  in qcam_ioctl()
682 			vw.width=qcam->width;  in qcam_ioctl()
683 			vw.height=qcam->height;  in qcam_ioctl()
712 	struct qcam_device *qcam=(struct qcam_device *)v;  in qcam_read()  local
715 	down(&qcam->lock);  in qcam_read()
716 	parport_claim_or_block(qcam->pdev);  in qcam_read()
718 	len = qc_capture(qcam, buf,count);   in qcam_read()
719 	parport_release(qcam->pdev);  in qcam_read()
720 	up(&qcam->lock);  in qcam_read()
781 	struct qcam_device *qcam;  in init_cqcam()  local
799 	qcam = qcam_init(port);  in init_cqcam()
800 	if (qcam==NULL)  in init_cqcam()
803 	parport_claim_or_block(qcam->pdev);  in init_cqcam()
805 	qc_reset(qcam);  in init_cqcam()
807 	if (probe && qc_detect(qcam)==0)  in init_cqcam()
809 		parport_release(qcam->pdev);  in init_cqcam()
810 		parport_unregister_device(qcam->pdev);  in init_cqcam()
811 		kfree(qcam);  in init_cqcam()
815 	qc_setup(qcam);  in init_cqcam()
817 	parport_release(qcam->pdev);  in init_cqcam()
819 	if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr)==-1)  in init_cqcam()
822 		       qcam->pport->name);  in init_cqcam()
823 		parport_unregister_device(qcam->pdev);  in init_cqcam()
824 		kfree(qcam);  in init_cqcam()
829 	       qcam->vdev.minor, qcam->pport->name);  in init_cqcam()
831 	qcams[num_cams++] = qcam;  in init_cqcam()
836 void close_cqcam(struct qcam_device *qcam)  in close_cqcam()  argument
838 	video_unregister_device(&qcam->vdev);  in close_cqcam()
839 	parport_unregister_device(qcam->pdev);  in close_cqcam()
840 	kfree(qcam);  in close_cqcam()