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authorNiklas Hallqvist <niklas@cvs.openbsd.org>1996-04-19 16:10:53 +0000
committerNiklas Hallqvist <niklas@cvs.openbsd.org>1996-04-19 16:10:53 +0000
commit7c4cfc5c047725e6c4c20e9adaa1ef4e70ff68d1 (patch)
treed415490c429995abee8d4ce27fac8216028a989c /sys/scsi/ss_mustek.c
parent6b3902486151983e34413a0e5a4bead588217855 (diff)
NetBSD 960317 merge
Diffstat (limited to 'sys/scsi/ss_mustek.c')
-rw-r--r--sys/scsi/ss_mustek.c624
1 files changed, 624 insertions, 0 deletions
diff --git a/sys/scsi/ss_mustek.c b/sys/scsi/ss_mustek.c
index 7be6628fe01..fa707b958fe 100644
--- a/sys/scsi/ss_mustek.c
+++ b/sys/scsi/ss_mustek.c
@@ -1,3 +1,627 @@
+/* $OpenBSD: ss_mustek.c,v 1.2 1996/04/19 16:10:21 niklas Exp $ */
+/* $NetBSD: ss_mustek.c,v 1.1 1996/02/18 20:32:47 mycroft Exp $ */
+
+/*
+ * Copyright (c) 1995 Joachim Koenig-Baltes. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Joachim Koenig-Baltes.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * special driver for MUSTEK flatbed scanners MFS 06000CX and MFS 12000CX
+ * these scanners come with their own scsi card, containing an NCR53C400
+ * SCSI controller chip. I'm in the progress of writing a driver for this
+ * card to work under NetBSD-current. I've hooked it up to a Seagate ST01
+ * hostadapter in the meantime, giving 350KB/sec for higher resolutions!
+ *
+ * I tried to connect it to my Adaptec 1542B, but with no success. It seems,
+ * it does not like synchronous negotiation between Hostadapter and other
+ * targets, but I could not turn this off for the 1542B.
+ *
+ * There is also an other reason why you would not like to connect it to your
+ * favourite SCSI host adapter: The Mustek DOES NOT DISCONNECT. It will block
+ * other traffic from the bus while a transfer is active.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/device.h>
+#include <sys/conf.h> /* for cdevsw */
+#include <sys/scanio.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsi_scanner.h>
+#include <scsi/scsiconf.h>
+#include <scsi/ssvar.h>
+#include <scsi/ss_mustek.h>
+
+#define MUSTEK_RETRIES 4
+
+int mustek_get_params __P((struct ss_softc *));
+int mustek_set_params __P((struct ss_softc *, struct scan_io *));
+int mustek_trigger_scanner __P((struct ss_softc *));
+void mustek_minphys __P((struct ss_softc *, struct buf *));
+int mustek_read __P((struct ss_softc *, struct buf *));
+int mustek_rewind_scanner __P((struct ss_softc *));
+
+/* only used internally */
+int mustek_get_status __P((struct ss_softc *, int, int));
+void mustek_compute_sizes __P((struct ss_softc *));
+
+/*
+ * structure for the special handlers
+ */
+struct ss_special mustek_special = {
+ mustek_set_params,
+ mustek_trigger_scanner,
+ mustek_get_params,
+ mustek_minphys,
+ mustek_read,
+ mustek_rewind_scanner,
+ NULL, /* no adf support right now */
+ NULL /* no adf support right now */
+};
+
+/*
+ * mustek_attach: attach special functions to ss
+ */
+void
+mustek_attach(ss, sa)
+ struct ss_softc *ss;
+ struct scsibus_attach_args *sa;
+{
+ struct scsi_link *sc_link = sa->sa_sc_link;
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: start\n"));
+ ss->sio.scan_scanner_type = 0;
+
+ /* first, check the model which determines resolutions */
+ if (!bcmp(sa->sa_inqbuf->product, "MFS-06000CX", 11)) {
+ ss->sio.scan_scanner_type = MUSTEK_06000CX;
+ printf(": Mustek 6000CX Flatbed 3-pass color scanner, 3 - 600 dpi\n");
+ }
+ if (!bcmp(sa->sa_inqbuf->product, "MFS-12000CX", 11)) {
+ ss->sio.scan_scanner_type = MUSTEK_12000CX;
+ printf(": Mustek 12000CX Flatbed 3-pass color scanner, 6 - 1200 dpi\n");
+ }
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_attach: scanner_type = %d\n",
+ ss->sio.scan_scanner_type));
+
+ /* install special handlers */
+ ss->special = &mustek_special;
+
+ /*
+ * populate the scanio struct with legal values
+ * the default should come from user space
+ */
+ ss->sio.scan_width = 1200;
+ ss->sio.scan_height = 1200;
+ ss->sio.scan_x_resolution = 99;
+ ss->sio.scan_y_resolution = 99;
+ ss->sio.scan_x_origin = 0;
+ ss->sio.scan_y_origin = 0;
+ ss->sio.scan_brightness = 100;
+ ss->sio.scan_contrast = 100;
+ ss->sio.scan_quality = 100;
+ ss->sio.scan_image_mode = SIM_GRAYSCALE;
+
+ mustek_compute_sizes(ss);
+}
+
+int
+mustek_get_params (ss)
+ struct ss_softc *ss;
+{
+
+ return (0);
+}
+
+/*
+ * check the parameters if the mustek is capable of fulfilling it
+ * but don't send the command to the scanner in case the user wants
+ * to change parameters by more than one call
+ */
+int
+mustek_set_params(ss, sio)
+ struct ss_softc *ss;
+ struct scan_io *sio;
+{
+ int error;
+
+ /*
+ * if the scanner is triggered, then rewind it
+ */
+ if (ss->flags & SSF_TRIGGERED) {
+ error = mustek_rewind_scanner(ss);
+ if (error)
+ return (error);
+ }
+
+ /* size constraints: 8.5" horizontally and 14" vertically */
+#ifdef MUSTEK_INCH_SPEC
+ /* sizes must be a multiple of 1/8" */
+ sio->scan_x_origin -= sio->scan_x_origin % 150;
+ sio->scan_y_origin -= sio->scan_y_origin % 150;
+ sio->scan_width -= sio->scan_width % 150;
+ sio->scan_height -= sio->scan_height % 150;
+#endif
+ if (sio->scan_width == 0 ||
+ sio->scan_x_origin + sio->scan_width > 10200 ||
+ sio->scan_height == 0 ||
+ sio->scan_y_origin + sio->scan_height > 16800)
+ return (EINVAL);
+
+ /*
+ * for now, only realize the values for the MUSTEK_06000CX
+ * in the future, values for the MUSTEK_12000CX will be implemented
+ */
+
+ /*
+ * resolution (dpi) must be <= 300 and a multiple of 3 or
+ * between 300 and 600 and a multiple of 30
+ */
+ sio->scan_x_resolution -= sio->scan_x_resolution <= 300 ?
+ sio->scan_x_resolution % 3 : sio->scan_x_resolution % 30;
+ sio->scan_y_resolution -= sio->scan_y_resolution <= 300 ?
+ sio->scan_y_resolution % 3 : sio->scan_y_resolution % 30;
+ if (sio->scan_x_resolution < 3 || sio->scan_x_resolution > 600 ||
+ sio->scan_x_resolution != sio->scan_y_resolution)
+ return (EINVAL);
+
+ /* assume brightness values are between 64 and 136 in steps of 3 */
+ sio->scan_brightness -= (sio->scan_brightness - 64) % 3;
+ if (sio->scan_brightness < 64 || sio->scan_brightness > 136)
+ return (EINVAL);
+
+ /* contrast values must be between 16 and 184 in steps of 7 */
+ sio->scan_contrast -= (sio->scan_contrast - 16) % 7;
+ if (sio->scan_contrast < 16 || sio->scan_contrast > 184)
+ return (EINVAL);
+
+ /*
+ * velocity: between 0 (fast) and 4 (slow) which will be mapped
+ * to 100% = 4, 80% = 3, 60% = 2, 40% = 1, 20% = 0
+ * must be a multiple of 20
+ */
+ sio->scan_quality -= sio->scan_quality % 20;
+ if (sio->scan_quality < 20 || sio->scan_quality > 100)
+ return (EINVAL);
+
+ switch (sio->scan_image_mode) {
+ case SIM_BINARY_MONOCHROME:
+ case SIM_DITHERED_MONOCHROME:
+ case SIM_GRAYSCALE:
+ case SIM_RED:
+ case SIM_GREEN:
+ case SIM_BLUE:
+ break;
+ default:
+ return (EINVAL);
+ }
+
+ /* change ss_softc to the new values, but save ro-variables */
+ sio->scan_scanner_type = ss->sio.scan_scanner_type;
+ bcopy(sio, &ss->sio, sizeof(struct scan_io));
+
+ mustek_compute_sizes(ss);
+
+ return (0);
+}
+
+/*
+ * trim the requested transfer to a multiple of the line size
+ * this is called only from ssread() which guarantees, scanner is triggered
+ * In the future, it will trim the transfer to not read to much at a time
+ * because the mustek cannot disconnect. It will be calculated by the
+ * resolution, the velocity and the number of bytes per line.
+ */
+void
+mustek_minphys(ss, bp)
+ struct ss_softc *ss;
+ struct buf *bp;
+{
+ struct scsi_link *sc_link = ss->sc_link;
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_minphys: before: %d\n",
+ bp->b_bcount));
+ bp->b_bcount -= bp->b_bcount %
+ ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_minphys: after: %d\n",
+ bp->b_bcount));
+}
+
+/*
+ * trigger the scanner to start a scan operation
+ * this includes sending the mode- and window-data, starting the scanner
+ * and getting the image size info
+ */
+int
+mustek_trigger_scanner(ss)
+ struct ss_softc *ss;
+{
+ struct mustek_mode_select_cmd mode_cmd;
+ struct mustek_mode_select_data mode_data;
+ struct mustek_set_window_cmd window_cmd;
+ struct mustek_set_window_data window_data;
+ struct mustek_start_scan_cmd start_scan_cmd;
+ struct scsi_link *sc_link = ss->sc_link;
+#ifndef MUSTEK_INCH_SPEC
+ int pixel_tlx, pixel_tly, pixel_brx, pixel_bry, paperlength;
+#endif
+ int error;
+
+ mustek_compute_sizes(ss);
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner\n"));
+
+ /*
+ * set the window params and send the scsi command
+ */
+ bzero(&window_cmd, sizeof(window_cmd));
+ window_cmd.opcode = MUSTEK_SET_WINDOW;
+ window_cmd.length = sizeof(window_data);
+
+ bzero(&window_data, sizeof(window_data));
+ window_data.frame_header = MUSTEK_LINEART_BACKGROUND | MUSTEK_UNIT_SPEC;
+#ifdef MUSTEK_INCH_SPEC
+ /* the positional values are all 1 byte because 256 / 8 = 32" */
+ window_data.frame_tl_x_0 = ss->sio.scan_x_origin / 150;
+ window_data.frame_tl_x_1 = 0;
+ window_data.frame_tl_y_0 = ss->sio.scan_y_origin / 150;
+ window_data.frame_tl_y_1 = 0;
+ window_data.frame_br_x_0 = (ss->sio.scan_x_origin +
+ ss->sio.scan_width) / 150;
+ window_data.frame_br_x_1 = 0;
+ window_data.frame_br_y_0 = (ss->sio.scan_y_origin +
+ ss->sio.scan_height) / 150;
+ window_data.frame_br_y_1 = 0;
+#else
+ pixel_tlx = (ss->sio.scan_x_origin * ss->sio.scan_x_resolution) / 1200;
+ window_data.frame_tl_x_0 = pixel_tlx & 0xff;
+ window_data.frame_tl_x_1 = (pixel_tlx >> 8) & 0xff;
+ pixel_tly = (ss->sio.scan_y_origin * ss->sio.scan_y_resolution) / 1200;
+ window_data.frame_tl_y_0 = pixel_tly & 0xff;
+ window_data.frame_tl_y_1 = (pixel_tly >> 8) & 0xff;
+ pixel_brx = pixel_tlx +
+ (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+ window_data.frame_br_x_0 = pixel_brx & 0xff;
+ window_data.frame_br_x_1 = (pixel_brx >> 8) & 0xff;
+ pixel_bry = pixel_tly +
+ (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+ window_data.frame_br_y_0 = pixel_bry & 0xff;
+ window_data.frame_br_y_1 = (pixel_bry >> 8) & 0xff;
+#endif
+
+#if MUSTEK_WINDOWS >= 1
+ window_data.window1_header = MUSTEK_WINDOW_MASK | MUSTEK_UNIT_SPEC;
+ window_data.window1_tl_x_0 = window_data.frame_tl_x_0;
+ window_data.window1_tl_x_1 = window_data.frame_tl_x_1;
+ window_data.window1_tl_y_0 = window_data.frame_tl_y_0;
+ window_data.window1_tl_y_1 = window_data.frame_tl_y_1;
+ window_data.window1_br_x_0 = window_data.frame_br_x_0;
+ window_data.window1_br_x_1 = window_data.frame_br_x_1;
+ window_data.window1_br_y_0 = window_data.frame_br_y_0;
+ window_data.window1_br_y_1 = window_data.frame_br_y_1;
+#endif
+
+ /* send the set window command to the scanner */
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_set_parms: set_window\n"));
+ error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &window_cmd,
+ sizeof(window_cmd), (u_char *) &window_data, sizeof(window_data),
+ MUSTEK_RETRIES, 5000, NULL, SCSI_DATA_OUT);
+ if (error)
+ return (error);
+
+ /*
+ * do what it takes to actualize the mode
+ */
+ bzero(&mode_cmd, sizeof(mode_cmd));
+ mode_cmd.opcode = MUSTEK_MODE_SELECT;
+ mode_cmd.length_0 = sizeof(mode_data);
+
+ bzero(&mode_data, sizeof(mode_data));
+ mode_data.mode =
+ MUSTEK_MODE_MASK | MUSTEK_HT_PATTERN_BUILTIN | MUSTEK_UNIT_SPEC;
+ if (ss->sio.scan_x_resolution <= 300) {
+ mode_data.resolution = ss->sio.scan_x_resolution / 3;
+ } else {
+ /*
+ * the resolution values is computed by modulo 100, but not
+ * for 600dpi, where the value is 100 (a bit tricky, but ...)
+ */
+ mode_data.resolution =
+ ((ss->sio.scan_x_resolution - 1) % 100) + 1;
+ }
+ mode_data.brightness = (ss->sio.scan_brightness - 64) / 3;
+ mode_data.contrast = (ss->sio.scan_contrast - 16) / 7;
+ mode_data.grain = 0;
+ mode_data.velocity = ss->sio.scan_quality / 20 - 1;
+#ifdef MUSTEK_INCH_SPEC
+ mode_data.paperlength_0 = 14 * 8; /* 14" */
+ mode_data.paperlength_1 = 0;
+#else
+ paperlength = 14 * ss->sio.scan_y_resolution; /* 14" */
+ mode_data.paperlength_0 = paperlength & 0xff;
+ mode_data.paperlength_1 = (paperlength >> 8) & 0xff;
+#endif
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: mode_select\n"));
+ /* send the command to the scanner */
+ error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &mode_cmd,
+ sizeof(mode_cmd), (u_char *) &mode_data, sizeof(mode_data),
+ MUSTEK_RETRIES, 5000, NULL, SCSI_DATA_OUT);
+ if (error)
+ return (error);
+
+ /*
+ * now construct and send the start command
+ */
+ bzero(&start_scan_cmd,sizeof(start_scan_cmd));
+ start_scan_cmd.opcode = MUSTEK_START_STOP;
+ start_scan_cmd.mode = MUSTEK_SCAN_START;
+ if (ss->sio.scan_x_resolution <= 300)
+ start_scan_cmd.mode |= MUSTEK_RES_STEP_1;
+ else
+ start_scan_cmd.mode |= MUSTEK_RES_STEP_10;
+ switch (ss->sio.scan_image_mode) {
+ case SIM_BINARY_MONOCHROME:
+ case SIM_DITHERED_MONOCHROME:
+ start_scan_cmd.mode |= MUSTEK_BIT_MODE | MUSTEK_GRAY_FILTER;
+ break;
+ case SIM_GRAYSCALE:
+ start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_GRAY_FILTER;
+ break;
+ case SIM_RED:
+ start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_RED_FILTER;
+ break;
+ case SIM_GREEN:
+ start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_GREEN_FILTER;
+ break;
+ case SIM_BLUE:
+ start_scan_cmd.mode |= MUSTEK_GRAY_MODE | MUSTEK_BLUE_FILTER;
+ break;
+ }
+
+ /* send the command to the scanner */
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: start_scan\n"));
+ error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &start_scan_cmd,
+ sizeof(start_scan_cmd), NULL, 0,
+ MUSTEK_RETRIES, 5000, NULL, 0);
+ if (error)
+ return (error);
+
+ /*
+ * now check if scanner ready this time with update of size info
+ * we wait here so that if the user issues a read directly afterwards,
+ * the scanner will respond directly (otherwise we had to sleep with
+ * a buffer locked in memory)
+ */
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_trigger_scanner: get_status\n"));
+ error = mustek_get_status(ss, 60, 1);
+ if (error)
+ return (error);
+
+ return (0);
+}
+
+/*
+ * stop a scan operation in progress
+ */
+int
+mustek_rewind_scanner(ss)
+ struct ss_softc *ss;
+{
+ struct mustek_start_scan_cmd cmd;
+ struct scsi_link *sc_link = ss->sc_link;
+ int error;
+
+ if (ss->sio.scan_window_size != 0) {
+ /*
+ * only if not all data has been read, the scanner has to be
+ * stopped
+ */
+ bzero(&cmd, sizeof(cmd));
+ cmd.opcode = MUSTEK_START_STOP;
+ cmd.mode = MUSTEK_SCAN_STOP;
+
+ /* send the command to the scanner */
+ SC_DEBUG(sc_link, SDEV_DB1,
+ ("mustek_rewind_scanner: stop_scan\n"));
+ error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
+ sizeof(cmd), NULL, 0, MUSTEK_RETRIES, 5000, NULL, 0);
+ if (error)
+ return (error);
+ }
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_rewind_scanner: end\n"));
+
+ return (0);
+}
+
+/*
+ * read the requested number of bytes/lines from the scanner
+ */
+int
+mustek_read(ss, bp)
+ struct ss_softc *ss;
+ struct buf *bp;
+{
+ struct mustek_read_cmd cmd;
+ struct scsi_link *sc_link = ss->sc_link;
+ u_long lines_to_read;
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_read: start\n"));
+
+ bzero(&cmd, sizeof(cmd));
+ cmd.opcode = MUSTEK_READ;
+
+ /* instead of the bytes, the mustek wants the number of lines */
+ lines_to_read = bp->b_bcount /
+ ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_read: read %d lines\n",
+ lines_to_read));
+ cmd.length_0 = lines_to_read & 0xff;
+ cmd.length_1 = (lines_to_read >> 8) & 0xff;
+ cmd.length_2 = (lines_to_read >> 16) & 0xff;
+
+ /*
+ * go ask the adapter to do all this for us
+ */
+ if (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd, sizeof(cmd),
+ (u_char *) bp->b_data, bp->b_bcount, MUSTEK_RETRIES, 10000, bp,
+ SCSI_NOSLEEP | SCSI_DATA_IN) != SUCCESSFULLY_QUEUED)
+ printf("%s: not queued\n", ss->sc_dev.dv_xname);
+ else {
+ ss->sio.scan_lines -= lines_to_read;
+ ss->sio.scan_window_size -= bp->b_bcount;
+ }
+
+ return (0);
+}
+
+/*
+ * check if the scanner is ready to take commands
+ * wait timeout seconds and try only every second
+ * if update, then update picture size info
+ *
+ * returns EBUSY if scanner not ready
+ */
+int
+mustek_get_status(ss, timeout, update)
+ struct ss_softc *ss;
+ int timeout, update;
+{
+ struct mustek_get_status_cmd cmd;
+ struct mustek_get_status_data data;
+ struct scsi_link *sc_link = ss->sc_link;
+ int error, lines, bytes_per_line;
+
+ bzero(&cmd, sizeof(cmd));
+ cmd.opcode = MUSTEK_GET_STATUS;
+ cmd.length = sizeof(data);
+
+ while (1) {
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_get_status: stat_cmd\n"));
+ error = scsi_scsi_cmd(sc_link, (struct scsi_generic *) &cmd,
+ sizeof(cmd), (u_char *) &data, sizeof(data), MUSTEK_RETRIES,
+ 5000, NULL, SCSI_DATA_IN);
+ if (error)
+ return (error);
+ if ((data.ready_busy == MUSTEK_READY) ||
+ (timeout-- <= 0))
+ break;
+ /* please wait a second */
+ tsleep((caddr_t)mustek_get_status, PRIBIO + 1, "mtkrdy", hz);
+ }
+
+ if (update) {
+ bytes_per_line =
+ (data.bytes_per_line_1 << 8) |
+ data.bytes_per_line_0;
+ lines =
+ (data.lines_2 << 16) |
+ (data.lines_1 << 8) |
+ data.lines_0;
+ if (lines != ss->sio.scan_lines) {
+ printf("mustek: lines actual(%d) != computed(%d)\n",
+ lines, ss->sio.scan_lines);
+ return (EIO);
+ }
+ if (bytes_per_line * lines != ss->sio.scan_window_size) {
+ printf("mustek: win-size actual(%d) != computed(%d)\n",
+ bytes_per_line * lines, ss->sio.scan_window_size);
+ return (EIO);
+ }
+
+ SC_DEBUG(sc_link, SDEV_DB1,
+ ("mustek_get_size: bpl=%d, lines=%d\n",
+ (ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8,
+ ss->sio.scan_lines));
+ SC_DEBUG(sc_link, SDEV_DB1, ("window size = %d\n",
+ ss->sio.scan_window_size));
+ }
+
+ SC_DEBUG(sc_link, SDEV_DB1, ("mustek_get_status: end\n"));
+ if (data.ready_busy == MUSTEK_READY)
+ return (0);
+ else
+ return (EBUSY);
+}
+
+/*
+ * mustek_compute_sizes: compute window_size and lines for the picture
+ * this function is called from different places in the code
+ */
+void
+mustek_compute_sizes(ss)
+ struct ss_softc *ss;
+{
+
+ switch (ss->sio.scan_image_mode) {
+ case SIM_BINARY_MONOCHROME:
+ case SIM_DITHERED_MONOCHROME:
+ ss->sio.scan_bits_per_pixel = 1;
+ break;
+ case SIM_GRAYSCALE:
+ case SIM_RED:
+ case SIM_GREEN:
+ case SIM_BLUE:
+ ss->sio.scan_bits_per_pixel = 8;
+ break;
+ }
+
+ /*
+ * horizontal number of bytes is always a multiple of 2,
+ * in 8-bit mode at least
+ */
+ ss->sio.scan_pixels_per_line =
+ (ss->sio.scan_width * ss->sio.scan_x_resolution) / 1200;
+ if (ss->sio.scan_bits_per_pixel == 1)
+ /* make it a multiple of 16, and thus of 2 bytes */
+ ss->sio.scan_pixels_per_line =
+ (ss->sio.scan_pixels_per_line + 15) & 0xfffffff0;
+ else
+ ss->sio.scan_pixels_per_line =
+ (ss->sio.scan_pixels_per_line + 1) & 0xfffffffe;
+
+ ss->sio.scan_lines =
+ (ss->sio.scan_height * ss->sio.scan_y_resolution) / 1200;
+ ss->sio.scan_window_size = ss->sio.scan_lines *
+ ((ss->sio.scan_pixels_per_line * ss->sio.scan_bits_per_pixel) / 8);
+}
/* $NetBSD: ss_mustek.c,v 1.1 1996/02/18 20:32:47 mycroft Exp $ */
/*