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authorHans Verkuil <hans.verkuil@cisco.com>2014-12-02 15:40:33 (GMT)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2014-12-17 01:21:44 (GMT)
commit427ae153c65ad7a08288d86baf99000569627d03 (patch)
tree52119858c582478c8737366abbb308af5c95a9f6 /drivers/staging/media
parentea2e813e8cc3492c951b9895724fd47187e04a6f (diff)
[media] bq/c-qcam, w9966, pms: move to staging in preparation for removalmedia/v3.19-2
These drivers haven't been tested in a long, long time. The hardware is ancient and hopelessly obsolete. These drivers also need to be converted to newer media frameworks but due to the lack of hardware that's going to be impossible. In addition, cheaper and vastly better hardware is available today. So these drivers are a prime candidate for removal. If someone is interested in working on these drivers to prevent their removal, then please contact the linux-media mailinglist. Let's be honest, the age of parallel port webcams and ISA video capture boards is really gone. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/staging/media')
-rw-r--r--drivers/staging/media/Kconfig2
-rw-r--r--drivers/staging/media/Makefile1
-rw-r--r--drivers/staging/media/parport/Kconfig69
-rw-r--r--drivers/staging/media/parport/Makefile4
-rw-r--r--drivers/staging/media/parport/bw-qcam.c1177
-rw-r--r--drivers/staging/media/parport/c-qcam.c882
-rw-r--r--drivers/staging/media/parport/pms.c1156
-rw-r--r--drivers/staging/media/parport/w9966.c980
8 files changed, 4271 insertions, 0 deletions
diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
index 209b265..2a054a9 100644
--- a/drivers/staging/media/Kconfig
+++ b/drivers/staging/media/Kconfig
@@ -35,6 +35,8 @@ source "drivers/staging/media/mn88473/Kconfig"
source "drivers/staging/media/omap4iss/Kconfig"
+source "drivers/staging/media/parport/Kconfig"
+
source "drivers/staging/media/vino/Kconfig"
# Keep LIRC at the end, as it has sub-menus
diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile
index a0eec73..412b284 100644
--- a/drivers/staging/media/Makefile
+++ b/drivers/staging/media/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_VIDEO_DM365_VPFE) += davinci_vpfe/
obj-$(CONFIG_VIDEO_OMAP4) += omap4iss/
obj-$(CONFIG_DVB_MN88472) += mn88472/
obj-$(CONFIG_DVB_MN88473) += mn88473/
+obj-y += parport/
obj-$(CONFIG_VIDEO_TLG2300) += tlg2300/
obj-y += vino/
diff --git a/drivers/staging/media/parport/Kconfig b/drivers/staging/media/parport/Kconfig
new file mode 100644
index 0000000..15974ef
--- /dev/null
+++ b/drivers/staging/media/parport/Kconfig
@@ -0,0 +1,69 @@
+menuconfig MEDIA_PARPORT_SUPPORT
+ bool "ISA and parallel port devices"
+ depends on (ISA || PARPORT) && MEDIA_CAMERA_SUPPORT
+ help
+ Enables drivers for ISA and parallel port bus. If you
+ need media drivers using those legacy buses, say Y.
+
+if MEDIA_PARPORT_SUPPORT
+config VIDEO_BWQCAM
+ tristate "Quickcam BW Video For Linux (Deprecated)"
+ depends on PARPORT && VIDEO_V4L2
+ select VIDEOBUF2_VMALLOC
+ help
+ Say Y have if you the black and white version of the QuickCam
+ camera. See the next option for the color version.
+
+ This driver is deprecated and will be removed soon. If you have
+ hardware for this and you want to work on this driver, then contact
+ the linux-media mailinglist.
+
+ To compile this driver as a module, choose M here: the
+ module will be called bw-qcam.
+
+config VIDEO_CQCAM
+ tristate "QuickCam Colour Video For Linux (Deprecated)"
+ depends on PARPORT && VIDEO_V4L2
+ help
+ This is the video4linux driver for the colour version of the
+ Connectix QuickCam. If you have one of these cameras, say Y here,
+ otherwise say N. This driver does not work with the original
+ monochrome QuickCam, QuickCam VC or QuickClip. It is also available
+ as a module (c-qcam).
+ Read <file:Documentation/video4linux/CQcam.txt> for more information.
+
+ This driver is deprecated and will be removed soon. If you have
+ hardware for this and you want to work on this driver, then contact
+ the linux-media mailinglist.
+
+config VIDEO_PMS
+ tristate "Mediavision Pro Movie Studio Video For Linux (Deprecated)"
+ depends on ISA && VIDEO_V4L2
+ help
+ Say Y if you have the ISA Mediavision Pro Movie Studio
+ capture card.
+
+ This driver is deprecated and will be removed soon. If you have
+ hardware for this and you want to work on this driver, then contact
+ the linux-media mailinglist.
+
+ To compile this driver as a module, choose M here: the
+ module will be called pms.
+
+config VIDEO_W9966
+ tristate "W9966CF Webcam (FlyCam Supra and others) Video For Linux (Deprecated)"
+ depends on PARPORT_1284 && PARPORT && VIDEO_V4L2
+ help
+ Video4linux driver for Winbond's w9966 based Webcams.
+ Currently tested with the LifeView FlyCam Supra.
+ If you have one of these cameras, say Y here
+ otherwise say N.
+ This driver is also available as a module (w9966).
+
+ Check out <file:Documentation/video4linux/w9966.txt> for more
+ information.
+
+ This driver is deprecated and will be removed soon. If you have
+ hardware for this and you want to work on this driver, then contact
+ the linux-media mailinglist.
+endif
diff --git a/drivers/staging/media/parport/Makefile b/drivers/staging/media/parport/Makefile
new file mode 100644
index 0000000..4eea06d
--- /dev/null
+++ b/drivers/staging/media/parport/Makefile
@@ -0,0 +1,4 @@
+obj-$(CONFIG_VIDEO_CQCAM) += c-qcam.o
+obj-$(CONFIG_VIDEO_BWQCAM) += bw-qcam.o
+obj-$(CONFIG_VIDEO_W9966) += w9966.o
+obj-$(CONFIG_VIDEO_PMS) += pms.o
diff --git a/drivers/staging/media/parport/bw-qcam.c b/drivers/staging/media/parport/bw-qcam.c
new file mode 100644
index 0000000..67b9da1
--- /dev/null
+++ b/drivers/staging/media/parport/bw-qcam.c
@@ -0,0 +1,1177 @@
+/*
+ * QuickCam Driver For Video4Linux.
+ *
+ * Video4Linux conversion work by Alan Cox.
+ * Parport compatibility by Phil Blundell.
+ * Busy loop avoidance by Mark Cooke.
+ *
+ * Module parameters:
+ *
+ * maxpoll=<1 - 5000>
+ *
+ * When polling the QuickCam for a response, busy-wait for a
+ * maximum of this many loops. The default of 250 gives little
+ * impact on interactive response.
+ *
+ * NOTE: If this parameter is set too high, the processor
+ * will busy wait until this loop times out, and then
+ * slowly poll for a further 5 seconds before failing
+ * the transaction. You have been warned.
+ *
+ * yieldlines=<1 - 250>
+ *
+ * When acquiring a frame from the camera, the data gathering
+ * loop will yield back to the scheduler after completing
+ * this many lines. The default of 4 provides a trade-off
+ * between increased frame acquisition time and impact on
+ * interactive response.
+ */
+
+/* qcam-lib.c -- Library for programming with the Connectix QuickCam.
+ * See the included documentation for usage instructions and details
+ * of the protocol involved. */
+
+
+/* Version 0.5, August 4, 1996 */
+/* Version 0.7, August 27, 1996 */
+/* Version 0.9, November 17, 1996 */
+
+
+/******************************************************************
+
+Copyright (C) 1996 by Scott Laird
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL SCOTT LAIRD BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************/
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/parport.h>
+#include <linux/sched.h>
+#include <linux/videodev2.h>
+#include <linux/mutex.h>
+#include <asm/uaccess.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-vmalloc.h>
+
+/* One from column A... */
+#define QC_NOTSET 0
+#define QC_UNIDIR 1
+#define QC_BIDIR 2
+#define QC_SERIAL 3
+
+/* ... and one from column B */
+#define QC_ANY 0x00
+#define QC_FORCE_UNIDIR 0x10
+#define QC_FORCE_BIDIR 0x20
+#define QC_FORCE_SERIAL 0x30
+/* in the port_mode member */
+
+#define QC_MODE_MASK 0x07
+#define QC_FORCE_MASK 0x70
+
+#define MAX_HEIGHT 243
+#define MAX_WIDTH 336
+
+/* Bit fields for status flags */
+#define QC_PARAM_CHANGE 0x01 /* Camera status change has occurred */
+
+struct qcam {
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct v4l2_ctrl_handler hdl;
+ struct vb2_queue vb_vidq;
+ struct pardevice *pdev;
+ struct parport *pport;
+ struct mutex lock;
+ struct mutex queue_lock;
+ int width, height;
+ int bpp;
+ int mode;
+ int contrast, brightness, whitebal;
+ int port_mode;
+ int transfer_scale;
+ int top, left;
+ int status;
+ unsigned int saved_bits;
+ unsigned long in_use;
+};
+
+static unsigned int maxpoll = 250; /* Maximum busy-loop count for qcam I/O */
+static unsigned int yieldlines = 4; /* Yield after this many during capture */
+static int video_nr = -1;
+static unsigned int force_init; /* Whether to probe aggressively */
+
+module_param(maxpoll, int, 0);
+module_param(yieldlines, int, 0);
+module_param(video_nr, int, 0);
+
+/* Set force_init=1 to avoid detection by polling status register and
+ * immediately attempt to initialize qcam */
+module_param(force_init, int, 0);
+
+#define MAX_CAMS 4
+static struct qcam *qcams[MAX_CAMS];
+static unsigned int num_cams;
+
+static inline int read_lpstatus(struct qcam *q)
+{
+ return parport_read_status(q->pport);
+}
+
+static inline int read_lpdata(struct qcam *q)
+{
+ return parport_read_data(q->pport);
+}
+
+static inline void write_lpdata(struct qcam *q, int d)
+{
+ parport_write_data(q->pport, d);
+}
+
+static void write_lpcontrol(struct qcam *q, int d)
+{
+ if (d & 0x20) {
+ /* Set bidirectional mode to reverse (data in) */
+ parport_data_reverse(q->pport);
+ } else {
+ /* Set bidirectional mode to forward (data out) */
+ parport_data_forward(q->pport);
+ }
+
+ /* Now issue the regular port command, but strip out the
+ * direction flag */
+ d &= ~0x20;
+ parport_write_control(q->pport, d);
+}
+
+
+/* qc_waithand busy-waits for a handshake signal from the QuickCam.
+ * Almost all communication with the camera requires handshaking. */
+
+static int qc_waithand(struct qcam *q, int val)
+{
+ int status;
+ int runs = 0;
+
+ if (val) {
+ while (!((status = read_lpstatus(q)) & 8)) {
+ /* 1000 is enough spins on the I/O for all normal
+ cases, at that point we start to poll slowly
+ until the camera wakes up. However, we are
+ busy blocked until the camera responds, so
+ setting it lower is much better for interactive
+ response. */
+
+ if (runs++ > maxpoll)
+ msleep_interruptible(5);
+ if (runs > (maxpoll + 1000)) /* 5 seconds */
+ return -1;
+ }
+ } else {
+ while (((status = read_lpstatus(q)) & 8)) {
+ /* 1000 is enough spins on the I/O for all normal
+ cases, at that point we start to poll slowly
+ until the camera wakes up. However, we are
+ busy blocked until the camera responds, so
+ setting it lower is much better for interactive
+ response. */
+
+ if (runs++ > maxpoll)
+ msleep_interruptible(5);
+ if (runs++ > (maxpoll + 1000)) /* 5 seconds */
+ return -1;
+ }
+ }
+
+ return status;
+}
+
+/* Waithand2 is used when the qcam is in bidirectional mode, and the
+ * handshaking signal is CamRdy2 (bit 0 of data reg) instead of CamRdy1
+ * (bit 3 of status register). It also returns the last value read,
+ * since this data is useful. */
+
+static unsigned int qc_waithand2(struct qcam *q, int val)
+{
+ unsigned int status;
+ int runs = 0;
+
+ do {
+ status = read_lpdata(q);
+ /* 1000 is enough spins on the I/O for all normal
+ cases, at that point we start to poll slowly
+ until the camera wakes up. However, we are
+ busy blocked until the camera responds, so
+ setting it lower is much better for interactive
+ response. */
+
+ if (runs++ > maxpoll)
+ msleep_interruptible(5);
+ if (runs++ > (maxpoll + 1000)) /* 5 seconds */
+ return 0;
+ } while ((status & 1) != val);
+
+ return status;
+}
+
+/* qc_command is probably a bit of a misnomer -- it's used to send
+ * bytes *to* the camera. Generally, these bytes are either commands
+ * or arguments to commands, so the name fits, but it still bugs me a
+ * bit. See the documentation for a list of commands. */
+
+static int qc_command(struct qcam *q, int command)
+{
+ int n1, n2;
+ int cmd;
+
+ write_lpdata(q, command);
+ write_lpcontrol(q, 6);
+
+ n1 = qc_waithand(q, 1);
+
+ write_lpcontrol(q, 0xe);
+ n2 = qc_waithand(q, 0);
+
+ cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
+ return cmd;
+}
+
+static int qc_readparam(struct qcam *q)
+{
+ int n1, n2;
+ int cmd;
+
+ write_lpcontrol(q, 6);
+ n1 = qc_waithand(q, 1);
+
+ write_lpcontrol(q, 0xe);
+ n2 = qc_waithand(q, 0);
+
+ cmd = (n1 & 0xf0) | ((n2 & 0xf0) >> 4);
+ return cmd;
+}
+
+
+/* Try to detect a QuickCam. It appears to flash the upper 4 bits of
+ the status register at 5-10 Hz. This is only used in the autoprobe
+ code. Be aware that this isn't the way Connectix detects the
+ camera (they send a reset and try to handshake), but this should be
+ almost completely safe, while their method screws up my printer if
+ I plug it in before the camera. */
+
+static int qc_detect(struct qcam *q)
+{
+ int reg, lastreg;
+ int count = 0;
+ int i;
+
+ if (force_init)
+ return 1;
+
+ lastreg = reg = read_lpstatus(q) & 0xf0;
+
+ for (i = 0; i < 500; i++) {
+ reg = read_lpstatus(q) & 0xf0;
+ if (reg != lastreg)
+ count++;
+ lastreg = reg;
+ mdelay(2);
+ }
+
+
+#if 0
+ /* Force camera detection during testing. Sometimes the camera
+ won't be flashing these bits. Possibly unloading the module
+ in the middle of a grab? Or some timeout condition?
+ I've seen this parameter as low as 19 on my 450Mhz box - mpc */
+ printk(KERN_DEBUG "Debugging: QCam detection counter <30-200 counts as detected>: %d\n", count);
+ return 1;
+#endif
+
+ /* Be (even more) liberal in what you accept... */
+
+ if (count > 20 && count < 400) {
+ return 1; /* found */
+ } else {
+ printk(KERN_ERR "No Quickcam found on port %s\n",
+ q->pport->name);
+ printk(KERN_DEBUG "Quickcam detection counter: %u\n", count);
+ return 0; /* not found */
+ }
+}
+
+/* Decide which scan mode to use. There's no real requirement that
+ * the scanmode match the resolution in q->height and q-> width -- the
+ * camera takes the picture at the resolution specified in the
+ * "scanmode" and then returns the image at the resolution specified
+ * with the resolution commands. If the scan is bigger than the
+ * requested resolution, the upper-left hand corner of the scan is
+ * returned. If the scan is smaller, then the rest of the image
+ * returned contains garbage. */
+
+static int qc_setscanmode(struct qcam *q)
+{
+ int old_mode = q->mode;
+
+ switch (q->transfer_scale) {
+ case 1:
+ q->mode = 0;
+ break;
+ case 2:
+ q->mode = 4;
+ break;
+ case 4:
+ q->mode = 8;
+ break;
+ }
+
+ switch (q->bpp) {
+ case 4:
+ break;
+ case 6:
+ q->mode += 2;
+ break;
+ }
+
+ switch (q->port_mode & QC_MODE_MASK) {
+ case QC_BIDIR:
+ q->mode += 1;
+ break;
+ case QC_NOTSET:
+ case QC_UNIDIR:
+ break;
+ }
+
+ if (q->mode != old_mode)
+ q->status |= QC_PARAM_CHANGE;
+
+ return 0;
+}
+
+
+/* Reset the QuickCam. This uses the same sequence the Windows
+ * QuickPic program uses. Someone with a bi-directional port should
+ * check that bi-directional mode is detected right, and then
+ * implement bi-directional mode in qc_readbyte(). */
+
+static void qc_reset(struct qcam *q)
+{
+ switch (q->port_mode & QC_FORCE_MASK) {
+ case QC_FORCE_UNIDIR:
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
+ break;
+
+ case QC_FORCE_BIDIR:
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
+ break;
+
+ case QC_ANY:
+ write_lpcontrol(q, 0x20);
+ write_lpdata(q, 0x75);
+
+ if (read_lpdata(q) != 0x75)
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_BIDIR;
+ else
+ q->port_mode = (q->port_mode & ~QC_MODE_MASK) | QC_UNIDIR;
+ break;
+ }
+
+ write_lpcontrol(q, 0xb);
+ udelay(250);
+ write_lpcontrol(q, 0xe);
+ qc_setscanmode(q); /* in case port_mode changed */
+}
+
+
+
+/* Reset the QuickCam and program for brightness, contrast,
+ * white-balance, and resolution. */
+
+static void qc_set(struct qcam *q)
+{
+ int val;
+ int val2;
+
+ /* Set the brightness. Yes, this is repetitive, but it works.
+ * Shorter versions seem to fail subtly. Feel free to try :-). */
+ /* I think the problem was in qc_command, not here -- bls */
+
+ qc_command(q, 0xb);
+ qc_command(q, q->brightness);
+
+ val = q->height / q->transfer_scale;
+ qc_command(q, 0x11);
+ qc_command(q, val);
+ if ((q->port_mode & QC_MODE_MASK) == QC_UNIDIR && q->bpp == 6) {
+ /* The normal "transfers per line" calculation doesn't seem to work
+ as expected here (and yet it works fine in qc_scan). No idea
+ why this case is the odd man out. Fortunately, Laird's original
+ working version gives me a good way to guess at working values.
+ -- bls */
+ val = q->width;
+ val2 = q->transfer_scale * 4;
+ } else {
+ val = q->width * q->bpp;
+ val2 = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) *
+ q->transfer_scale;
+ }
+ val = DIV_ROUND_UP(val, val2);
+ qc_command(q, 0x13);
+ qc_command(q, val);
+
+ /* Setting top and left -- bls */
+ qc_command(q, 0xd);
+ qc_command(q, q->top);
+ qc_command(q, 0xf);
+ qc_command(q, q->left / 2);
+
+ qc_command(q, 0x19);
+ qc_command(q, q->contrast);
+ qc_command(q, 0x1f);
+ qc_command(q, q->whitebal);
+
+ /* Clear flag that we must update the grabbing parameters on the camera
+ before we grab the next frame */
+ q->status &= (~QC_PARAM_CHANGE);
+}
+
+/* Qc_readbytes reads some bytes from the QC and puts them in
+ the supplied buffer. It returns the number of bytes read,
+ or -1 on error. */
+
+static inline int qc_readbytes(struct qcam *q, char buffer[])
+{
+ int ret = 1;
+ unsigned int hi, lo;
+ unsigned int hi2, lo2;
+ static int state;
+
+ if (buffer == NULL) {
+ state = 0;
+ return 0;
+ }
+
+ switch (q->port_mode & QC_MODE_MASK) {
+ case QC_BIDIR: /* Bi-directional Port */
+ write_lpcontrol(q, 0x26);
+ lo = (qc_waithand2(q, 1) >> 1);
+ hi = (read_lpstatus(q) >> 3) & 0x1f;
+ write_lpcontrol(q, 0x2e);
+ lo2 = (qc_waithand2(q, 0) >> 1);
+ hi2 = (read_lpstatus(q) >> 3) & 0x1f;
+ switch (q->bpp) {
+ case 4:
+ buffer[0] = lo & 0xf;
+ buffer[1] = ((lo & 0x70) >> 4) | ((hi & 1) << 3);
+ buffer[2] = (hi & 0x1e) >> 1;
+ buffer[3] = lo2 & 0xf;
+ buffer[4] = ((lo2 & 0x70) >> 4) | ((hi2 & 1) << 3);
+ buffer[5] = (hi2 & 0x1e) >> 1;
+ ret = 6;
+ break;
+ case 6:
+ buffer[0] = lo & 0x3f;
+ buffer[1] = ((lo & 0x40) >> 6) | (hi << 1);
+ buffer[2] = lo2 & 0x3f;
+ buffer[3] = ((lo2 & 0x40) >> 6) | (hi2 << 1);
+ ret = 4;
+ break;
+ }
+ break;
+
+ case QC_UNIDIR: /* Unidirectional Port */
+ write_lpcontrol(q, 6);
+ lo = (qc_waithand(q, 1) & 0xf0) >> 4;
+ write_lpcontrol(q, 0xe);
+ hi = (qc_waithand(q, 0) & 0xf0) >> 4;
+
+ switch (q->bpp) {
+ case 4:
+ buffer[0] = lo;
+ buffer[1] = hi;
+ ret = 2;
+ break;
+ case 6:
+ switch (state) {
+ case 0:
+ buffer[0] = (lo << 2) | ((hi & 0xc) >> 2);
+ q->saved_bits = (hi & 3) << 4;
+ state = 1;
+ ret = 1;
+ break;
+ case 1:
+ buffer[0] = lo | q->saved_bits;
+ q->saved_bits = hi << 2;
+ state = 2;
+ ret = 1;
+ break;
+ case 2:
+ buffer[0] = ((lo & 0xc) >> 2) | q->saved_bits;
+ buffer[1] = ((lo & 3) << 4) | hi;
+ state = 0;
+ ret = 2;
+ break;
+ }
+ break;
+ }
+ break;
+ }
+ return ret;
+}
+
+/* requests a scan from the camera. It sends the correct instructions
+ * to the camera and then reads back the correct number of bytes. In
+ * previous versions of this routine the return structure contained
+ * the raw output from the camera, and there was a 'qc_convertscan'
+ * function that converted that to a useful format. In version 0.3 I
+ * rolled qc_convertscan into qc_scan and now I only return the
+ * converted scan. The format is just an one-dimensional array of
+ * characters, one for each pixel, with 0=black up to n=white, where
+ * n=2^(bit depth)-1. Ask me for more details if you don't understand
+ * this. */
+
+static long qc_capture(struct qcam *q, u8 *buf, unsigned long len)
+{
+ int i, j, k, yield;
+ int bytes;
+ int linestotrans, transperline;
+ int divisor;
+ int pixels_per_line;
+ int pixels_read = 0;
+ int got = 0;
+ char buffer[6];
+ int shift = 8 - q->bpp;
+ char invert;
+
+ if (q->mode == -1)
+ return -ENXIO;
+
+ qc_command(q, 0x7);
+ qc_command(q, q->mode);
+
+ if ((q->port_mode & QC_MODE_MASK) == QC_BIDIR) {
+ write_lpcontrol(q, 0x2e); /* turn port around */
+ write_lpcontrol(q, 0x26);
+ qc_waithand(q, 1);
+ write_lpcontrol(q, 0x2e);
+ qc_waithand(q, 0);
+ }
+
+ /* strange -- should be 15:63 below, but 4bpp is odd */
+ invert = (q->bpp == 4) ? 16 : 63;
+
+ linestotrans = q->height / q->transfer_scale;
+ pixels_per_line = q->width / q->transfer_scale;
+ transperline = q->width * q->bpp;
+ divisor = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) *
+ q->transfer_scale;
+ transperline = DIV_ROUND_UP(transperline, divisor);
+
+ for (i = 0, yield = yieldlines; i < linestotrans; i++) {
+ for (pixels_read = j = 0; j < transperline; j++) {
+ bytes = qc_readbytes(q, buffer);
+ for (k = 0; k < bytes && (pixels_read + k) < pixels_per_line; k++) {
+ int o;
+ if (buffer[k] == 0 && invert == 16) {
+ /* 4bpp is odd (again) -- inverter is 16, not 15, but output
+ must be 0-15 -- bls */
+ buffer[k] = 16;
+ }
+ o = i * pixels_per_line + pixels_read + k;
+ if (o < len) {
+ u8 ch = invert - buffer[k];
+ got++;
+ buf[o] = ch << shift;
+ }
+ }
+ pixels_read += bytes;
+ }
+ qc_readbytes(q, NULL); /* reset state machine */
+
+ /* Grabbing an entire frame from the quickcam is a lengthy
+ process. We don't (usually) want to busy-block the
+ processor for the entire frame. yieldlines is a module
+ parameter. If we yield every line, the minimum frame
+ time will be 240 / 200 = 1.2 seconds. The compile-time
+ default is to yield every 4 lines. */
+ if (i >= yield) {
+ msleep_interruptible(5);
+ yield = i + yieldlines;
+ }
+ }
+
+ if ((q->port_mode & QC_MODE_MASK) == QC_BIDIR) {
+ write_lpcontrol(q, 2);
+ write_lpcontrol(q, 6);
+ udelay(3);
+ write_lpcontrol(q, 0xe);
+ }
+ if (got < len)
+ return got;
+ return len;
+}
+
+/* ------------------------------------------------------------------
+ Videobuf operations
+ ------------------------------------------------------------------*/
+static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct qcam *dev = vb2_get_drv_priv(vq);
+
+ if (0 == *nbuffers)
+ *nbuffers = 3;
+ *nplanes = 1;
+ mutex_lock(&dev->lock);
+ if (fmt)
+ sizes[0] = fmt->fmt.pix.width * fmt->fmt.pix.height;
+ else
+ sizes[0] = (dev->width / dev->transfer_scale) *
+ (dev->height / dev->transfer_scale);
+ mutex_unlock(&dev->lock);
+ return 0;
+}
+
+static void buffer_queue(struct vb2_buffer *vb)
+{
+ vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
+}
+
+static void buffer_finish(struct vb2_buffer *vb)
+{
+ struct qcam *qcam = vb2_get_drv_priv(vb->vb2_queue);
+ void *vbuf = vb2_plane_vaddr(vb, 0);
+ int size = vb->vb2_queue->plane_sizes[0];
+ int len;
+
+ if (!vb2_is_streaming(vb->vb2_queue))
+ return;
+
+ mutex_lock(&qcam->lock);
+ parport_claim_or_block(qcam->pdev);
+
+ qc_reset(qcam);
+
+ /* Update the camera parameters if we need to */
+ if (qcam->status & QC_PARAM_CHANGE)
+ qc_set(qcam);
+
+ len = qc_capture(qcam, vbuf, size);
+
+ parport_release(qcam->pdev);
+ mutex_unlock(&qcam->lock);
+ v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
+ if (len != size)
+ vb->state = VB2_BUF_STATE_ERROR;
+ vb2_set_plane_payload(vb, 0, len);
+}
+
+static struct vb2_ops qcam_video_qops = {
+ .queue_setup = queue_setup,
+ .buf_queue = buffer_queue,
+ .buf_finish = buffer_finish,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+/*
+ * Video4linux interfacing
+ */
+
+static int qcam_querycap(struct file *file, void *priv,
+ struct v4l2_capability *vcap)
+{
+ struct qcam *qcam = video_drvdata(file);
+
+ strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver));
+ strlcpy(vcap->card, "Connectix B&W Quickcam", sizeof(vcap->card));
+ strlcpy(vcap->bus_info, qcam->pport->name, sizeof(vcap->bus_info));
+ vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
+ V4L2_CAP_STREAMING;
+ vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static int qcam_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
+{
+ if (vin->index > 0)
+ return -EINVAL;
+ strlcpy(vin->name, "Camera", sizeof(vin->name));
+ vin->type = V4L2_INPUT_TYPE_CAMERA;
+ vin->audioset = 0;
+ vin->tuner = 0;
+ vin->std = 0;
+ vin->status = 0;
+ return 0;
+}
+
+static int qcam_g_input(struct file *file, void *fh, unsigned int *inp)
+{
+ *inp = 0;
+ return 0;
+}
+
+static int qcam_s_input(struct file *file, void *fh, unsigned int inp)
+{
+ return (inp > 0) ? -EINVAL : 0;
+}
+
+static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct qcam *qcam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ pix->width = qcam->width / qcam->transfer_scale;
+ pix->height = qcam->height / qcam->transfer_scale;
+ pix->pixelformat = (qcam->bpp == 4) ? V4L2_PIX_FMT_Y4 : V4L2_PIX_FMT_Y6;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = pix->width;
+ pix->sizeimage = pix->width * pix->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int qcam_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ if (pix->height <= 60 || pix->width <= 80) {
+ pix->height = 60;
+ pix->width = 80;
+ } else if (pix->height <= 120 || pix->width <= 160) {
+ pix->height = 120;
+ pix->width = 160;
+ } else {
+ pix->height = 240;
+ pix->width = 320;
+ }
+ if (pix->pixelformat != V4L2_PIX_FMT_Y4 &&
+ pix->pixelformat != V4L2_PIX_FMT_Y6)
+ pix->pixelformat = V4L2_PIX_FMT_Y4;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = pix->width;
+ pix->sizeimage = pix->width * pix->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int qcam_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct qcam *qcam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+ int ret = qcam_try_fmt_vid_cap(file, fh, fmt);
+
+ if (ret)
+ return ret;
+ if (vb2_is_busy(&qcam->vb_vidq))
+ return -EBUSY;
+ qcam->width = 320;
+ qcam->height = 240;
+ if (pix->height == 60)
+ qcam->transfer_scale = 4;
+ else if (pix->height == 120)
+ qcam->transfer_scale = 2;
+ else
+ qcam->transfer_scale = 1;
+ if (pix->pixelformat == V4L2_PIX_FMT_Y6)
+ qcam->bpp = 6;
+ else
+ qcam->bpp = 4;
+
+ qc_setscanmode(qcam);
+ /* We must update the camera before we grab. We could
+ just have changed the grab size */
+ qcam->status |= QC_PARAM_CHANGE;
+ return 0;
+}
+
+static int qcam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
+{
+ static struct v4l2_fmtdesc formats[] = {
+ { 0, 0, 0,
+ "4-Bit Monochrome", V4L2_PIX_FMT_Y4,
+ { 0, 0, 0, 0 }
+ },
+ { 1, 0, 0,
+ "6-Bit Monochrome", V4L2_PIX_FMT_Y6,
+ { 0, 0, 0, 0 }
+ },
+ };
+ enum v4l2_buf_type type = fmt->type;
+
+ if (fmt->index > 1)
+ return -EINVAL;
+
+ *fmt = formats[fmt->index];
+ fmt->type = type;
+ return 0;
+}
+
+static int qcam_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ static const struct v4l2_frmsize_discrete sizes[] = {
+ { 80, 60 },
+ { 160, 120 },
+ { 320, 240 },
+ };
+
+ if (fsize->index > 2)
+ return -EINVAL;
+ if (fsize->pixel_format != V4L2_PIX_FMT_Y4 &&
+ fsize->pixel_format != V4L2_PIX_FMT_Y6)
+ return -EINVAL;
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ fsize->discrete = sizes[fsize->index];
+ return 0;
+}
+
+static int qcam_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct qcam *qcam =
+ container_of(ctrl->handler, struct qcam, hdl);
+ int ret = 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ qcam->brightness = ctrl->val;
+ break;
+ case V4L2_CID_CONTRAST:
+ qcam->contrast = ctrl->val;
+ break;
+ case V4L2_CID_GAMMA:
+ qcam->whitebal = ctrl->val;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ if (ret == 0)
+ qcam->status |= QC_PARAM_CHANGE;
+ return ret;
+}
+
+static const struct v4l2_file_operations qcam_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .poll = vb2_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .read = vb2_fop_read,
+ .mmap = vb2_fop_mmap,
+};
+
+static const struct v4l2_ioctl_ops qcam_ioctl_ops = {
+ .vidioc_querycap = qcam_querycap,
+ .vidioc_g_input = qcam_g_input,
+ .vidioc_s_input = qcam_s_input,
+ .vidioc_enum_input = qcam_enum_input,
+ .vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
+ .vidioc_enum_framesizes = qcam_enum_framesizes,
+ .vidioc_g_fmt_vid_cap = qcam_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = qcam_s_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = qcam_try_fmt_vid_cap,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static const struct v4l2_ctrl_ops qcam_ctrl_ops = {
+ .s_ctrl = qcam_s_ctrl,
+};
+
+/* Initialize the QuickCam driver control structure. This is where
+ * defaults are set for people who don't have a config file.*/
+
+static struct qcam *qcam_init(struct parport *port)
+{
+ struct qcam *qcam;
+ struct v4l2_device *v4l2_dev;
+ struct vb2_queue *q;
+ int err;
+
+ qcam = kzalloc(sizeof(struct qcam), GFP_KERNEL);
+ if (qcam == NULL)
+ return NULL;
+
+ v4l2_dev = &qcam->v4l2_dev;
+ snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "bw-qcam%u", num_cams);
+
+ if (v4l2_device_register(port->dev, v4l2_dev) < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ kfree(qcam);
+ return NULL;
+ }
+
+ v4l2_ctrl_handler_init(&qcam->hdl, 3);
+ v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 255, 1, 180);
+ v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 255, 1, 192);
+ v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+ V4L2_CID_GAMMA, 0, 255, 1, 105);
+ if (qcam->hdl.error) {
+ v4l2_err(v4l2_dev, "couldn't register controls\n");
+ goto exit;
+ }
+
+ mutex_init(&qcam->lock);
+ mutex_init(&qcam->queue_lock);
+
+ /* initialize queue */
+ q = &qcam->vb_vidq;
+ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
+ q->drv_priv = qcam;
+ q->ops = &qcam_video_qops;
+ q->mem_ops = &vb2_vmalloc_memops;
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ err = vb2_queue_init(q);
+ if (err < 0) {
+ v4l2_err(v4l2_dev, "couldn't init vb2_queue for %s.\n", port->name);
+ goto exit;
+ }
+ qcam->vdev.queue = q;
+ qcam->vdev.queue->lock = &qcam->queue_lock;
+
+ qcam->pport = port;
+ qcam->pdev = parport_register_device(port, v4l2_dev->name, NULL, NULL,
+ NULL, 0, NULL);
+ if (qcam->pdev == NULL) {
+ v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
+ goto exit;
+ }
+
+ strlcpy(qcam->vdev.name, "Connectix QuickCam", sizeof(qcam->vdev.name));
+ qcam->vdev.v4l2_dev = v4l2_dev;
+ qcam->vdev.ctrl_handler = &qcam->hdl;
+ qcam->vdev.fops = &qcam_fops;
+ qcam->vdev.lock = &qcam->lock;
+ qcam->vdev.ioctl_ops = &qcam_ioctl_ops;
+ qcam->vdev.release = video_device_release_empty;
+ video_set_drvdata(&qcam->vdev, qcam);
+
+ qcam->port_mode = (QC_ANY | QC_NOTSET);
+ qcam->width = 320;
+ qcam->height = 240;
+ qcam->bpp = 4;
+ qcam->transfer_scale = 2;
+ qcam->contrast = 192;
+ qcam->brightness = 180;
+ qcam->whitebal = 105;
+ qcam->top = 1;
+ qcam->left = 14;
+ qcam->mode = -1;
+ qcam->status = QC_PARAM_CHANGE;
+ return qcam;
+
+exit:
+ v4l2_ctrl_handler_free(&qcam->hdl);
+ kfree(qcam);
+ return NULL;
+}
+
+static int qc_calibrate(struct qcam *q)
+{
+ /*
+ * Bugfix by Hanno Mueller hmueller@kabel.de, Mai 21 96
+ * The white balance is an individual value for each
+ * quickcam.
+ */
+
+ int value;
+ int count = 0;
+
+ qc_command(q, 27); /* AutoAdjustOffset */
+ qc_command(q, 0); /* Dummy Parameter, ignored by the camera */
+
+ /* GetOffset (33) will read 255 until autocalibration */
+ /* is finished. After that, a value of 1-254 will be */
+ /* returned. */
+
+ do {
+ qc_command(q, 33);
+ value = qc_readparam(q);
+ mdelay(1);
+ schedule();
+ count++;
+ } while (value == 0xff && count < 2048);
+
+ q->whitebal = value;
+ return value;
+}
+
+static int init_bwqcam(struct parport *port)
+{
+ struct qcam *qcam;
+
+ if (num_cams == MAX_CAMS) {
+ printk(KERN_ERR "Too many Quickcams (max %d)\n", MAX_CAMS);
+ return -ENOSPC;
+ }
+
+ qcam = qcam_init(port);
+ if (qcam == NULL)
+ return -ENODEV;
+
+ parport_claim_or_block(qcam->pdev);
+
+ qc_reset(qcam);
+
+ if (qc_detect(qcam) == 0) {
+ parport_release(qcam->pdev);
+ parport_unregister_device(qcam->pdev);
+ kfree(qcam);
+ return -ENODEV;
+ }
+ qc_calibrate(qcam);
+ v4l2_ctrl_handler_setup(&qcam->hdl);
+
+ parport_release(qcam->pdev);
+
+ v4l2_info(&qcam->v4l2_dev, "Connectix Quickcam on %s\n", qcam->pport->name);
+
+ if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
+ parport_unregister_device(qcam->pdev);
+ kfree(qcam);
+ return -ENODEV;
+ }
+
+ qcams[num_cams++] = qcam;
+
+ return 0;
+}
+
+static void close_bwqcam(struct qcam *qcam)
+{
+ video_unregister_device(&qcam->vdev);
+ v4l2_ctrl_handler_free(&qcam->hdl);
+ parport_unregister_device(qcam->pdev);
+ kfree(qcam);
+}
+
+/* The parport parameter controls which parports will be scanned.
+ * Scanning all parports causes some printers to print a garbage page.
+ * -- March 14, 1999 Billy Donahue <billy@escape.com> */
+#ifdef MODULE
+static char *parport[MAX_CAMS] = { NULL, };
+module_param_array(parport, charp, NULL, 0);
+#endif
+
+static int accept_bwqcam(struct parport *port)
+{
+#ifdef MODULE
+ int n;
+
+ if (parport[0] && strncmp(parport[0], "auto", 4) != 0) {
+ /* user gave parport parameters */
+ for (n = 0; n < MAX_CAMS && parport[n]; n++) {
+ char *ep;
+ unsigned long r;
+ r = simple_strtoul(parport[n], &ep, 0);
+ if (ep == parport[n]) {
+ printk(KERN_ERR
+ "bw-qcam: bad port specifier \"%s\"\n",
+ parport[n]);
+ continue;
+ }
+ if (r == port->number)
+ return 1;
+ }
+ return 0;
+ }
+#endif
+ return 1;
+}
+
+static void bwqcam_attach(struct parport *port)
+{
+ if (accept_bwqcam(port))
+ init_bwqcam(port);
+}
+
+static void bwqcam_detach(struct parport *port)
+{
+ int i;
+ for (i = 0; i < num_cams; i++) {
+ struct qcam *qcam = qcams[i];
+ if (qcam && qcam->pdev->port == port) {
+ qcams[i] = NULL;
+ close_bwqcam(qcam);
+ }
+ }
+}
+
+static struct parport_driver bwqcam_driver = {
+ .name = "bw-qcam",
+ .attach = bwqcam_attach,
+ .detach = bwqcam_detach,
+};
+
+static void __exit exit_bw_qcams(void)
+{
+ parport_unregister_driver(&bwqcam_driver);
+}
+
+static int __init init_bw_qcams(void)
+{
+#ifdef MODULE
+ /* Do some sanity checks on the module parameters. */
+ if (maxpoll > 5000) {
+ printk(KERN_INFO "Connectix Quickcam max-poll was above 5000. Using 5000.\n");
+ maxpoll = 5000;
+ }
+
+ if (yieldlines < 1) {
+ printk(KERN_INFO "Connectix Quickcam yieldlines was less than 1. Using 1.\n");
+ yieldlines = 1;
+ }
+#endif
+ return parport_register_driver(&bwqcam_driver);
+}
+
+module_init(init_bw_qcams);
+module_exit(exit_bw_qcams);
+
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.0.3");
diff --git a/drivers/staging/media/parport/c-qcam.c b/drivers/staging/media/parport/c-qcam.c
new file mode 100644
index 0000000..b9010bd
--- /dev/null
+++ b/drivers/staging/media/parport/c-qcam.c
@@ -0,0 +1,882 @@
+/*
+ * Video4Linux Colour QuickCam driver
+ * Copyright 1997-2000 Philip Blundell <philb@gnu.org>
+ *
+ * Module parameters:
+ *
+ * parport=auto -- probe all parports (default)
+ * parport=0 -- parport0 becomes qcam1
+ * parport=2,0,1 -- parports 2,0,1 are tried in that order
+ *
+ * probe=0 -- do no probing, assume camera is present
+ * probe=1 -- use IEEE-1284 autoprobe data only (default)
+ * probe=2 -- probe aggressively for cameras
+ *
+ * force_rgb=1 -- force data format to RGB (default is BGR)
+ *
+ * The parport parameter controls which parports will be scanned.
+ * Scanning all parports causes some printers to print a garbage page.
+ * -- March 14, 1999 Billy Donahue <billy@escape.com>
+ *
+ * Fixed data format to BGR, added force_rgb parameter. Added missing
+ * parport_unregister_driver() on module removal.
+ * -- May 28, 2000 Claudio Matsuoka <claudio@conectiva.com>
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/parport.h>
+#include <linux/sched.h>
+#include <linux/mutex.h>
+#include <linux/jiffies.h>
+#include <linux/videodev2.h>
+#include <asm/uaccess.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+
+struct qcam {
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct v4l2_ctrl_handler hdl;
+ struct pardevice *pdev;
+ struct parport *pport;
+ int width, height;
+ int ccd_width, ccd_height;
+ int mode;
+ int contrast, brightness, whitebal;
+ int top, left;
+ unsigned int bidirectional;
+ struct mutex lock;
+};
+
+/* cameras maximum */
+#define MAX_CAMS 4
+
+/* The three possible QuickCam modes */
+#define QC_MILLIONS 0x18
+#define QC_BILLIONS 0x10
+#define QC_THOUSANDS 0x08 /* with VIDEC compression (not supported) */
+
+/* The three possible decimations */
+#define QC_DECIMATION_1 0
+#define QC_DECIMATION_2 2
+#define QC_DECIMATION_4 4
+
+#define BANNER "Colour QuickCam for Video4Linux v0.06"
+
+static int parport[MAX_CAMS] = { [1 ... MAX_CAMS-1] = -1 };
+static int probe = 2;
+static bool force_rgb;
+static int video_nr = -1;
+
+/* FIXME: parport=auto would never have worked, surely? --RR */
+MODULE_PARM_DESC(parport, "parport=<auto|n[,n]...> for port detection method\n"
+ "probe=<0|1|2> for camera detection method\n"
+ "force_rgb=<0|1> for RGB data format (default BGR)");
+module_param_array(parport, int, NULL, 0);
+module_param(probe, int, 0);
+module_param(force_rgb, bool, 0);
+module_param(video_nr, int, 0);
+
+static struct qcam *qcams[MAX_CAMS];
+static unsigned int num_cams;
+
+static inline void qcam_set_ack(struct qcam *qcam, unsigned int i)
+{
+ /* note: the QC specs refer to the PCAck pin by voltage, not
+ software level. PC ports have builtin inverters. */
+ parport_frob_control(qcam->pport, 8, i ? 8 : 0);
+}
+
+static inline unsigned int qcam_ready1(struct qcam *qcam)
+{
+ return (parport_read_status(qcam->pport) & 0x8) ? 1 : 0;
+}
+
+static inline unsigned int qcam_ready2(struct qcam *qcam)
+{
+ return (parport_read_data(qcam->pport) & 0x1) ? 1 : 0;
+}
+
+static unsigned int qcam_await_ready1(struct qcam *qcam, int value)
+{
+ struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
+ unsigned long oldjiffies = jiffies;
+ unsigned int i;
+
+ for (oldjiffies = jiffies;
+ time_before(jiffies, oldjiffies + msecs_to_jiffies(40));)
+ if (qcam_ready1(qcam) == value)
+ return 0;
+
+ /* If the camera didn't respond within 1/25 second, poll slowly
+ for a while. */
+ for (i = 0; i < 50; i++) {
+ if (qcam_ready1(qcam) == value)
+ return 0;
+ msleep_interruptible(100);
+ }
+
+ /* Probably somebody pulled the plug out. Not much we can do. */
+ v4l2_err(v4l2_dev, "ready1 timeout (%d) %x %x\n", value,
+ parport_read_status(qcam->pport),
+ parport_read_control(qcam->pport));
+ return 1;
+}
+
+static unsigned int qcam_await_ready2(struct qcam *qcam, int value)
+{
+ struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
+ unsigned long oldjiffies = jiffies;
+ unsigned int i;
+
+ for (oldjiffies = jiffies;
+ time_before(jiffies, oldjiffies + msecs_to_jiffies(40));)
+ if (qcam_ready2(qcam) == value)
+ return 0;
+
+ /* If the camera didn't respond within 1/25 second, poll slowly
+ for a while. */
+ for (i = 0; i < 50; i++) {
+ if (qcam_ready2(qcam) == value)
+ return 0;
+ msleep_interruptible(100);
+ }
+
+ /* Probably somebody pulled the plug out. Not much we can do. */
+ v4l2_err(v4l2_dev, "ready2 timeout (%d) %x %x %x\n", value,
+ parport_read_status(qcam->pport),
+ parport_read_control(qcam->pport),
+ parport_read_data(qcam->pport));
+ return 1;
+}
+
+static int qcam_read_data(struct qcam *qcam)
+{
+ unsigned int idata;
+
+ qcam_set_ack(qcam, 0);
+ if (qcam_await_ready1(qcam, 1))
+ return -1;
+ idata = parport_read_status(qcam->pport) & 0xf0;
+ qcam_set_ack(qcam, 1);
+ if (qcam_await_ready1(qcam, 0))
+ return -1;
+ idata |= parport_read_status(qcam->pport) >> 4;
+ return idata;
+}
+
+static int qcam_write_data(struct qcam *qcam, unsigned int data)
+{
+ struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
+ unsigned int idata;
+
+ parport_write_data(qcam->pport, data);
+ idata = qcam_read_data(qcam);
+ if (data != idata) {
+ v4l2_warn(v4l2_dev, "sent %x but received %x\n", data,
+ idata);
+ return 1;
+ }
+ return 0;
+}
+
+static inline int qcam_set(struct qcam *qcam, unsigned int cmd, unsigned int data)
+{
+ if (qcam_write_data(qcam, cmd))
+ return -1;
+ if (qcam_write_data(qcam, data))
+ return -1;
+ return 0;
+}
+
+static inline int qcam_get(struct qcam *qcam, unsigned int cmd)
+{
+ if (qcam_write_data(qcam, cmd))
+ return -1;
+ return qcam_read_data(qcam);
+}
+
+static int qc_detect(struct qcam *qcam)
+{
+ unsigned int stat, ostat, i, count = 0;
+
+ /* The probe routine below is not very reliable. The IEEE-1284
+ probe takes precedence. */
+ /* XXX Currently parport provides no way to distinguish between
+ "the IEEE probe was not done" and "the probe was done, but
+ no device was found". Fix this one day. */
+ if (qcam->pport->probe_info[0].class == PARPORT_CLASS_MEDIA
+ && qcam->pport->probe_info[0].model
+ && !strcmp(qcam->pdev->port->probe_info[0].model,
+ "Color QuickCam 2.0")) {
+ printk(KERN_DEBUG "QuickCam: Found by IEEE1284 probe.\n");
+ return 1;
+ }
+
+ if (probe < 2)
+ return 0;
+
+ parport_write_control(qcam->pport, 0xc);
+
+ /* look for a heartbeat */
+ ostat = stat = parport_read_status(qcam->pport);
+ for (i = 0; i < 250; i++) {
+ mdelay(1);
+ stat = parport_read_status(qcam->pport);
+ if (ostat != stat) {
+ if (++count >= 3)
+ return 1;
+ ostat = stat;
+ }
+ }
+
+ /* Reset the camera and try again */
+ parport_write_control(qcam->pport, 0xc);
+ parport_write_control(qcam->pport, 0x8);
+ mdelay(1);
+ parport_write_control(qcam->pport, 0xc);
+ mdelay(1);
+ count = 0;
+
+ ostat = stat = parport_read_status(qcam->pport);
+ for (i = 0; i < 250; i++) {
+ mdelay(1);
+ stat = parport_read_status(qcam->pport);
+ if (ostat != stat) {
+ if (++count >= 3)
+ return 1;
+ ostat = stat;
+ }
+ }
+
+ /* no (or flatline) camera, give up */
+ return 0;
+}
+
+static void qc_reset(struct qcam *qcam)
+{
+ parport_write_control(qcam->pport, 0xc);
+ parport_write_control(qcam->pport, 0x8);
+ mdelay(1);
+ parport_write_control(qcam->pport, 0xc);
+ mdelay(1);
+}
+
+/* Reset the QuickCam and program for brightness, contrast,
+ * white-balance, and resolution. */
+
+static void qc_setup(struct qcam *qcam)
+{
+ qc_reset(qcam);
+
+ /* Set the brightness. */
+ qcam_set(qcam, 11, qcam->brightness);
+
+ /* Set the height and width. These refer to the actual
+ CCD area *before* applying the selected decimation. */
+ qcam_set(qcam, 17, qcam->ccd_height);
+ qcam_set(qcam, 19, qcam->ccd_width / 2);
+
+ /* Set top and left. */
+ qcam_set(qcam, 0xd, qcam->top);
+ qcam_set(qcam, 0xf, qcam->left);
+
+ /* Set contrast and white balance. */
+ qcam_set(qcam, 0x19, qcam->contrast);
+ qcam_set(qcam, 0x1f, qcam->whitebal);
+
+ /* Set the speed. */
+ qcam_set(qcam, 45, 2);
+}
+
+/* Read some bytes from the camera and put them in the buffer.
+ nbytes should be a multiple of 3, because bidirectional mode gives
+ us three bytes at a time. */
+
+static unsigned int qcam_read_bytes(struct qcam *qcam, unsigned char *buf, unsigned int nbytes)
+{
+ unsigned int bytes = 0;
+
+ qcam_set_ack(qcam, 0);
+ if (qcam->bidirectional) {
+ /* It's a bidirectional port */
+ while (bytes < nbytes) {
+ unsigned int lo1, hi1, lo2, hi2;
+ unsigned char r, g, b;
+
+ if (qcam_await_ready2(qcam, 1))
+ return bytes;
+ lo1 = parport_read_data(qcam->pport) >> 1;
+ hi1 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
+ qcam_set_ack(qcam, 1);
+ if (qcam_await_ready2(qcam, 0))
+ return bytes;
+ lo2 = parport_read_data(qcam->pport) >> 1;
+ hi2 = ((parport_read_status(qcam->pport) >> 3) & 0x1f) ^ 0x10;
+ qcam_set_ack(qcam, 0);
+ r = lo1 | ((hi1 & 1) << 7);
+ g = ((hi1 & 0x1e) << 3) | ((hi2 & 0x1e) >> 1);
+ b = lo2 | ((hi2 & 1) << 7);
+ if (force_rgb) {
+ buf[bytes++] = r;
+ buf[bytes++] = g;
+ buf[bytes++] = b;
+ } else {
+ buf[bytes++] = b;
+ buf[bytes++] = g;
+ buf[bytes++] = r;
+ }
+ }
+ } else {
+ /* It's a unidirectional port */
+ int i = 0, n = bytes;
+ unsigned char rgb[3];
+
+ while (bytes < nbytes) {
+ unsigned int hi, lo;
+
+ if (qcam_await_ready1(qcam, 1))
+ return bytes;
+ hi = (parport_read_status(qcam->pport) & 0xf0);
+ qcam_set_ack(qcam, 1);
+ if (qcam_await_ready1(qcam, 0))
+ return bytes;
+ lo = (parport_read_status(qcam->pport) & 0xf0);
+ qcam_set_ack(qcam, 0);
+ /* flip some bits */
+ rgb[(i = bytes++ % 3)] = (hi | (lo >> 4)) ^ 0x88;
+ if (i >= 2) {
+get_fragment:
+ if (force_rgb) {
+ buf[n++] = rgb[0];
+ buf[n++] = rgb[1];
+ buf[n++] = rgb[2];
+ } else {
+ buf[n++] = rgb[2];
+ buf[n++] = rgb[1];
+ buf[n++] = rgb[0];
+ }
+ }
+ }
+ if (i) {
+ i = 0;
+ goto get_fragment;
+ }
+ }
+ return bytes;
+}
+
+#define BUFSZ 150
+
+static long qc_capture(struct qcam *qcam, char __user *buf, unsigned long len)
+{
+ struct v4l2_device *v4l2_dev = &qcam->v4l2_dev;
+ unsigned lines, pixelsperline;
+ unsigned int is_bi_dir = qcam->bidirectional;
+ size_t wantlen, outptr = 0;
+ char tmpbuf[BUFSZ];
+
+ if (!access_ok(VERIFY_WRITE, buf, len))
+ return -EFAULT;
+
+ /* Wait for camera to become ready */
+ for (;;) {
+ int i = qcam_get(qcam, 41);
+
+ if (i == -1) {
+ qc_setup(qcam);
+ return -EIO;
+ }
+ if ((i & 0x80) == 0)
+ break;
+ schedule();
+ }
+
+ if (qcam_set(qcam, 7, (qcam->mode | (is_bi_dir ? 1 : 0)) + 1))
+ return -EIO;
+
+ lines = qcam->height;
+ pixelsperline = qcam->width;
+
+ if (is_bi_dir) {
+ /* Turn the port around */
+ parport_data_reverse(qcam->pport);
+ mdelay(3);
+ qcam_set_ack(qcam, 0);
+ if (qcam_await_ready1(qcam, 1)) {
+ qc_setup(qcam);
+ return -EIO;
+ }
+ qcam_set_ack(qcam, 1);
+ if (qcam_await_ready1(qcam, 0)) {
+ qc_setup(qcam);
+ return -EIO;
+ }
+ }
+
+ wantlen = lines * pixelsperline * 24 / 8;
+
+ while (wantlen) {
+ size_t t, s;
+
+ s = (wantlen > BUFSZ) ? BUFSZ : wantlen;
+ t = qcam_read_bytes(qcam, tmpbuf, s);
+ if (outptr < len) {
+ size_t sz = len - outptr;
+
+ if (sz > t)
+ sz = t;
+ if (__copy_to_user(buf + outptr, tmpbuf, sz))
+ break;
+ outptr += sz;
+ }
+ wantlen -= t;
+ if (t < s)
+ break;
+ cond_resched();
+ }
+
+ len = outptr;
+
+ if (wantlen) {
+ v4l2_err(v4l2_dev, "short read.\n");
+ if (is_bi_dir)
+ parport_data_forward(qcam->pport);
+ qc_setup(qcam);
+ return len;
+ }
+
+ if (is_bi_dir) {
+ int l;
+
+ do {
+ l = qcam_read_bytes(qcam, tmpbuf, 3);
+ cond_resched();
+ } while (l && (tmpbuf[0] == 0x7e || tmpbuf[1] == 0x7e || tmpbuf[2] == 0x7e));
+ if (force_rgb) {
+ if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
+ v4l2_err(v4l2_dev, "bad EOF\n");
+ } else {
+ if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
+ v4l2_err(v4l2_dev, "bad EOF\n");
+ }
+ qcam_set_ack(qcam, 0);
+ if (qcam_await_ready1(qcam, 1)) {
+ v4l2_err(v4l2_dev, "no ack after EOF\n");
+ parport_data_forward(qcam->pport);
+ qc_setup(qcam);
+ return len;
+ }
+ parport_data_forward(qcam->pport);
+ mdelay(3);
+ qcam_set_ack(qcam, 1);
+ if (qcam_await_ready1(qcam, 0)) {
+ v4l2_err(v4l2_dev, "no ack to port turnaround\n");
+ qc_setup(qcam);
+ return len;
+ }
+ } else {
+ int l;
+
+ do {
+ l = qcam_read_bytes(qcam, tmpbuf, 1);
+ cond_resched();
+ } while (l && tmpbuf[0] == 0x7e);
+ l = qcam_read_bytes(qcam, tmpbuf + 1, 2);
+ if (force_rgb) {
+ if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
+ v4l2_err(v4l2_dev, "bad EOF\n");
+ } else {
+ if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
+ v4l2_err(v4l2_dev, "bad EOF\n");
+ }
+ }
+
+ qcam_write_data(qcam, 0);
+ return len;
+}
+
+/*
+ * Video4linux interfacing
+ */
+
+static int qcam_querycap(struct file *file, void *priv,
+ struct v4l2_capability *vcap)
+{
+ struct qcam *qcam = video_drvdata(file);
+
+ strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver));
+ strlcpy(vcap->card, "Color Quickcam", sizeof(vcap->card));
+ strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
+ vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
+ vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static int qcam_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
+{
+ if (vin->index > 0)
+ return -EINVAL;
+ strlcpy(vin->name, "Camera", sizeof(vin->name));
+ vin->type = V4L2_INPUT_TYPE_CAMERA;
+ vin->audioset = 0;
+ vin->tuner = 0;
+ vin->std = 0;
+ vin->status = 0;
+ return 0;
+}
+
+static int qcam_g_input(struct file *file, void *fh, unsigned int *inp)
+{
+ *inp = 0;
+ return 0;
+}
+
+static int qcam_s_input(struct file *file, void *fh, unsigned int inp)
+{
+ return (inp > 0) ? -EINVAL : 0;
+}
+
+static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct qcam *qcam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ pix->width = qcam->width;
+ pix->height = qcam->height;
+ pix->pixelformat = V4L2_PIX_FMT_RGB24;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = 3 * qcam->width;
+ pix->sizeimage = 3 * qcam->width * qcam->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int qcam_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ if (pix->height < 60 || pix->width < 80) {
+ pix->height = 60;
+ pix->width = 80;
+ } else if (pix->height < 120 || pix->width < 160) {
+ pix->height = 120;
+ pix->width = 160;
+ } else {
+ pix->height = 240;
+ pix->width = 320;
+ }
+ pix->pixelformat = V4L2_PIX_FMT_RGB24;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = 3 * pix->width;
+ pix->sizeimage = 3 * pix->width * pix->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int qcam_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct qcam *qcam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+ int ret = qcam_try_fmt_vid_cap(file, fh, fmt);
+
+ if (ret)
+ return ret;
+ switch (pix->height) {
+ case 60:
+ qcam->mode = QC_DECIMATION_4;
+ break;
+ case 120:
+ qcam->mode = QC_DECIMATION_2;
+ break;
+ default:
+ qcam->mode = QC_DECIMATION_1;
+ break;
+ }
+
+ mutex_lock(&qcam->lock);
+ qcam->mode |= QC_MILLIONS;
+ qcam->height = pix->height;
+ qcam->width = pix->width;
+ parport_claim_or_block(qcam->pdev);
+ qc_setup(qcam);
+ parport_release(qcam->pdev);
+ mutex_unlock(&qcam->lock);
+ return 0;
+}
+
+static int qcam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
+{
+ static struct v4l2_fmtdesc formats[] = {
+ { 0, 0, 0,
+ "RGB 8:8:8", V4L2_PIX_FMT_RGB24,
+ { 0, 0, 0, 0 }
+ },
+ };
+ enum v4l2_buf_type type = fmt->type;
+
+ if (fmt->index > 0)
+ return -EINVAL;
+
+ *fmt = formats[fmt->index];
+ fmt->type = type;
+ return 0;
+}
+
+static ssize_t qcam_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct qcam *qcam = video_drvdata(file);
+ int len;
+
+ mutex_lock(&qcam->lock);
+ parport_claim_or_block(qcam->pdev);
+ /* Probably should have a semaphore against multiple users */
+ len = qc_capture(qcam, buf, count);
+ parport_release(qcam->pdev);
+ mutex_unlock(&qcam->lock);
+ return len;
+}
+
+static int qcam_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct qcam *qcam =
+ container_of(ctrl->handler, struct qcam, hdl);
+ int ret = 0;
+
+ mutex_lock(&qcam->lock);
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ qcam->brightness = ctrl->val;
+ break;
+ case V4L2_CID_CONTRAST:
+ qcam->contrast = ctrl->val;
+ break;
+ case V4L2_CID_GAMMA:
+ qcam->whitebal = ctrl->val;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ if (ret == 0) {
+ parport_claim_or_block(qcam->pdev);
+ qc_setup(qcam);
+ parport_release(qcam->pdev);
+ }
+ mutex_unlock(&qcam->lock);
+ return ret;
+}
+
+static const struct v4l2_file_operations qcam_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = v4l2_fh_release,
+ .poll = v4l2_ctrl_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .read = qcam_read,
+};
+
+static const struct v4l2_ioctl_ops qcam_ioctl_ops = {
+ .vidioc_querycap = qcam_querycap,
+ .vidioc_g_input = qcam_g_input,
+ .vidioc_s_input = qcam_s_input,
+ .vidioc_enum_input = qcam_enum_input,
+ .vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = qcam_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = qcam_s_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = qcam_try_fmt_vid_cap,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static const struct v4l2_ctrl_ops qcam_ctrl_ops = {
+ .s_ctrl = qcam_s_ctrl,
+};
+
+/* Initialize the QuickCam driver control structure. */
+
+static struct qcam *qcam_init(struct parport *port)
+{
+ struct qcam *qcam;
+ struct v4l2_device *v4l2_dev;
+
+ qcam = kzalloc(sizeof(*qcam), GFP_KERNEL);
+ if (qcam == NULL)
+ return NULL;
+
+ v4l2_dev = &qcam->v4l2_dev;
+ strlcpy(v4l2_dev->name, "c-qcam", sizeof(v4l2_dev->name));
+
+ if (v4l2_device_register(NULL, v4l2_dev) < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ kfree(qcam);
+ return NULL;
+ }
+
+ v4l2_ctrl_handler_init(&qcam->hdl, 3);
+ v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 255, 1, 240);
+ v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 255, 1, 192);
+ v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
+ V4L2_CID_GAMMA, 0, 255, 1, 128);
+ if (qcam->hdl.error) {
+ v4l2_err(v4l2_dev, "couldn't register controls\n");
+ v4l2_ctrl_handler_free(&qcam->hdl);
+ kfree(qcam);
+ return NULL;
+ }
+
+ qcam->pport = port;
+ qcam->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
+ NULL, 0, NULL);
+
+ qcam->bidirectional = (qcam->pport->modes & PARPORT_MODE_TRISTATE) ? 1 : 0;
+
+ if (qcam->pdev == NULL) {
+ v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
+ v4l2_ctrl_handler_free(&qcam->hdl);
+ kfree(qcam);
+ return NULL;
+ }
+
+ strlcpy(qcam->vdev.name, "Colour QuickCam", sizeof(qcam->vdev.name));
+ qcam->vdev.v4l2_dev = v4l2_dev;
+ qcam->vdev.fops = &qcam_fops;
+ qcam->vdev.ioctl_ops = &qcam_ioctl_ops;
+ qcam->vdev.release = video_device_release_empty;
+ qcam->vdev.ctrl_handler = &qcam->hdl;
+ video_set_drvdata(&qcam->vdev, qcam);
+
+ mutex_init(&qcam->lock);
+ qcam->width = qcam->ccd_width = 320;
+ qcam->height = qcam->ccd_height = 240;
+ qcam->mode = QC_MILLIONS | QC_DECIMATION_1;
+ qcam->contrast = 192;
+ qcam->brightness = 240;
+ qcam->whitebal = 128;
+ qcam->top = 1;
+ qcam->left = 14;
+ return qcam;
+}
+
+static int init_cqcam(struct parport *port)
+{
+ struct qcam *qcam;
+ struct v4l2_device *v4l2_dev;
+
+ if (parport[0] != -1) {
+ /* The user gave specific instructions */
+ int i, found = 0;
+
+ for (i = 0; i < MAX_CAMS && parport[i] != -1; i++) {
+ if (parport[0] == port->number)
+ found = 1;
+ }
+ if (!found)
+ return -ENODEV;
+ }
+
+ if (num_cams == MAX_CAMS)
+ return -ENOSPC;
+
+ qcam = qcam_init(port);
+ if (qcam == NULL)
+ return -ENODEV;
+
+ v4l2_dev = &qcam->v4l2_dev;
+
+ parport_claim_or_block(qcam->pdev);
+
+ qc_reset(qcam);
+
+ if (probe && qc_detect(qcam) == 0) {
+ parport_release(qcam->pdev);
+ parport_unregister_device(qcam->pdev);
+ kfree(qcam);
+ return -ENODEV;
+ }
+
+ qc_setup(qcam);
+
+ parport_release(qcam->pdev);
+
+ if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
+ v4l2_err(v4l2_dev, "Unable to register Colour QuickCam on %s\n",
+ qcam->pport->name);
+ parport_unregister_device(qcam->pdev);
+ kfree(qcam);
+ return -ENODEV;
+ }
+
+ v4l2_info(v4l2_dev, "%s: Colour QuickCam found on %s\n",
+ video_device_node_name(&qcam->vdev), qcam->pport->name);
+
+ qcams[num_cams++] = qcam;
+
+ return 0;
+}
+
+static void close_cqcam(struct qcam *qcam)
+{
+ video_unregister_device(&qcam->vdev);
+ v4l2_ctrl_handler_free(&qcam->hdl);
+ parport_unregister_device(qcam->pdev);
+ kfree(qcam);
+}
+
+static void cq_attach(struct parport *port)
+{
+ init_cqcam(port);
+}
+
+static void cq_detach(struct parport *port)
+{
+ /* Write this some day. */
+}
+
+static struct parport_driver cqcam_driver = {
+ .name = "cqcam",
+ .attach = cq_attach,
+ .detach = cq_detach,
+};
+
+static int __init cqcam_init(void)
+{
+ printk(KERN_INFO BANNER "\n");
+
+ return parport_register_driver(&cqcam_driver);
+}
+
+static void __exit cqcam_cleanup(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < num_cams; i++)
+ close_cqcam(qcams[i]);
+
+ parport_unregister_driver(&cqcam_driver);
+}
+
+MODULE_AUTHOR("Philip Blundell <philb@gnu.org>");
+MODULE_DESCRIPTION(BANNER);
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.0.4");
+
+module_init(cqcam_init);
+module_exit(cqcam_cleanup);
diff --git a/drivers/staging/media/parport/pms.c b/drivers/staging/media/parport/pms.c
new file mode 100644
index 0000000..e6b4975
--- /dev/null
+++ b/drivers/staging/media/parport/pms.c
@@ -0,0 +1,1156 @@
+/*
+ * Media Vision Pro Movie Studio
+ * or
+ * "all you need is an I2C bus some RAM and a prayer"
+ *
+ * This draws heavily on code
+ *
+ * (c) Wolfgang Koehler, wolf@first.gmd.de, Dec. 1994
+ * Kiefernring 15
+ * 14478 Potsdam, Germany
+ *
+ * Most of this code is directly derived from his userspace driver.
+ * His driver works so send any reports to alan@lxorguk.ukuu.org.uk
+ * unless the userspace driver also doesn't work for you...
+ *
+ * Changes:
+ * 25-11-2009 Hans Verkuil <hverkuil@xs4all.nl>
+ * - converted to version 2 of the V4L API.
+ * 08/07/2003 Daniele Bellucci <bellucda@tiscali.it>
+ * - pms_capture: report back -EFAULT
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/mutex.h>
+#include <linux/uaccess.h>
+#include <linux/isa.h>
+#include <asm/io.h>
+
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-device.h>
+
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.0.5");
+
+#define MOTOROLA 1
+#define PHILIPS2 2 /* SAA7191 */
+#define PHILIPS1 3
+#define MVVMEMORYWIDTH 0x40 /* 512 bytes */
+
+struct i2c_info {
+ u8 slave;
+ u8 sub;
+ u8 data;
+ u8 hits;
+};
+
+struct pms {
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct v4l2_ctrl_handler hdl;
+ int height;
+ int width;
+ int depth;
+ int input;
+ struct mutex lock;
+ int i2c_count;
+ struct i2c_info i2cinfo[64];
+
+ int decoder;
+ int standard; /* 0 - auto 1 - ntsc 2 - pal 3 - secam */
+ v4l2_std_id std;
+ int io;
+ int data;
+ void __iomem *mem;
+};
+
+/*
+ * I/O ports and Shared Memory
+ */
+
+static int io_port = 0x250;
+module_param(io_port, int, 0);
+
+static int mem_base = 0xc8000;
+module_param(mem_base, int, 0);
+
+static int video_nr = -1;
+module_param(video_nr, int, 0);
+
+
+static inline void mvv_write(struct pms *dev, u8 index, u8 value)
+{
+ outw(index | (value << 8), dev->io);
+}
+
+static inline u8 mvv_read(struct pms *dev, u8 index)
+{
+ outb(index, dev->io);
+ return inb(dev->data);
+}
+
+static int pms_i2c_stat(struct pms *dev, u8 slave)
+{
+ int counter = 0;
+ int i;
+
+ outb(0x28, dev->io);
+
+ while ((inb(dev->data) & 0x01) == 0)
+ if (counter++ == 256)
+ break;
+
+ while ((inb(dev->data) & 0x01) != 0)
+ if (counter++ == 256)
+ break;
+
+ outb(slave, dev->io);
+
+ counter = 0;
+ while ((inb(dev->data) & 0x01) == 0)
+ if (counter++ == 256)
+ break;
+
+ while ((inb(dev->data) & 0x01) != 0)
+ if (counter++ == 256)
+ break;
+
+ for (i = 0; i < 12; i++) {
+ char st = inb(dev->data);
+
+ if ((st & 2) != 0)
+ return -1;
+ if ((st & 1) == 0)
+ break;
+ }
+ outb(0x29, dev->io);
+ return inb(dev->data);
+}
+
+static int pms_i2c_write(struct pms *dev, u16 slave, u16 sub, u16 data)
+{
+ int skip = 0;
+ int count;
+ int i;
+
+ for (i = 0; i < dev->i2c_count; i++) {
+ if ((dev->i2cinfo[i].slave == slave) &&
+ (dev->i2cinfo[i].sub == sub)) {
+ if (dev->i2cinfo[i].data == data)
+ skip = 1;
+ dev->i2cinfo[i].data = data;
+ i = dev->i2c_count + 1;
+ }
+ }
+
+ if (i == dev->i2c_count && dev->i2c_count < 64) {
+ dev->i2cinfo[dev->i2c_count].slave = slave;
+ dev->i2cinfo[dev->i2c_count].sub = sub;
+ dev->i2cinfo[dev->i2c_count].data = data;
+ dev->i2c_count++;
+ }
+
+ if (skip)
+ return 0;
+
+ mvv_write(dev, 0x29, sub);
+ mvv_write(dev, 0x2A, data);
+ mvv_write(dev, 0x28, slave);
+
+ outb(0x28, dev->io);
+
+ count = 0;
+ while ((inb(dev->data) & 1) == 0)
+ if (count > 255)
+ break;
+ while ((inb(dev->data) & 1) != 0)
+ if (count > 255)
+ break;
+
+ count = inb(dev->data);
+
+ if (count & 2)
+ return -1;
+ return count;
+}
+
+static int pms_i2c_read(struct pms *dev, int slave, int sub)
+{
+ int i;
+
+ for (i = 0; i < dev->i2c_count; i++) {
+ if (dev->i2cinfo[i].slave == slave && dev->i2cinfo[i].sub == sub)
+ return dev->i2cinfo[i].data;
+ }
+ return 0;
+}
+
+
+static void pms_i2c_andor(struct pms *dev, int slave, int sub, int and, int or)
+{
+ u8 tmp;
+
+ tmp = pms_i2c_read(dev, slave, sub);
+ tmp = (tmp & and) | or;
+ pms_i2c_write(dev, slave, sub, tmp);
+}
+
+/*
+ * Control functions
+ */
+
+
+static void pms_videosource(struct pms *dev, short source)
+{
+ switch (dev->decoder) {
+ case MOTOROLA:
+ break;
+ case PHILIPS2:
+ pms_i2c_andor(dev, 0x8a, 0x06, 0x7f, source ? 0x80 : 0);
+ break;
+ case PHILIPS1:
+ break;
+ }
+ mvv_write(dev, 0x2E, 0x31);
+ /* Was: mvv_write(dev, 0x2E, source ? 0x31 : 0x30);
+ But could not make this work correctly. Only Composite input
+ worked for me. */
+}
+
+static void pms_hue(struct pms *dev, short hue)
+{
+ switch (dev->decoder) {
+ case MOTOROLA:
+ pms_i2c_write(dev, 0x8a, 0x00, hue);
+ break;
+ case PHILIPS2:
+ pms_i2c_write(dev, 0x8a, 0x07, hue);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(dev, 0x42, 0x07, hue);
+ break;
+ }
+}
+
+static void pms_saturation(struct pms *dev, short sat)
+{
+ switch (dev->decoder) {
+ case MOTOROLA:
+ pms_i2c_write(dev, 0x8a, 0x00, sat);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(dev, 0x42, 0x12, sat);
+ break;
+ }
+}
+
+
+static void pms_contrast(struct pms *dev, short contrast)
+{
+ switch (dev->decoder) {
+ case MOTOROLA:
+ pms_i2c_write(dev, 0x8a, 0x00, contrast);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(dev, 0x42, 0x13, contrast);
+ break;
+ }
+}
+
+static void pms_brightness(struct pms *dev, short brightness)
+{
+ switch (dev->decoder) {
+ case MOTOROLA:
+ pms_i2c_write(dev, 0x8a, 0x00, brightness);
+ pms_i2c_write(dev, 0x8a, 0x00, brightness);
+ pms_i2c_write(dev, 0x8a, 0x00, brightness);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(dev, 0x42, 0x19, brightness);
+ break;
+ }
+}
+
+
+static void pms_format(struct pms *dev, short format)
+{
+ int target;
+
+ dev->standard = format;
+
+ if (dev->decoder == PHILIPS1)
+ target = 0x42;
+ else if (dev->decoder == PHILIPS2)
+ target = 0x8a;
+ else
+ return;
+
+ switch (format) {
+ case 0: /* Auto */
+ pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00);
+ pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x80);
+ break;
+ case 1: /* NTSC */
+ pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00);
+ pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x40);
+ break;
+ case 2: /* PAL */
+ pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00);
+ pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x00);
+ break;
+ case 3: /* SECAM */
+ pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x01);
+ pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x00);
+ break;
+ }
+}
+
+#ifdef FOR_FUTURE_EXPANSION
+
+/*
+ * These features of the PMS card are not currently exposes. They
+ * could become a private v4l ioctl for PMSCONFIG or somesuch if
+ * people need it. We also don't yet use the PMS interrupt.
+ */
+
+static void pms_hstart(struct pms *dev, short start)
+{
+ switch (dev->decoder) {
+ case PHILIPS1:
+ pms_i2c_write(dev, 0x8a, 0x05, start);
+ pms_i2c_write(dev, 0x8a, 0x18, start);
+ break;
+ case PHILIPS2:
+ pms_i2c_write(dev, 0x42, 0x05, start);
+ pms_i2c_write(dev, 0x42, 0x18, start);
+ break;
+ }
+}
+
+/*
+ * Bandpass filters
+ */
+
+static void pms_bandpass(struct pms *dev, short pass)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x06, 0xcf, (pass & 0x03) << 4);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x06, 0xcf, (pass & 0x03) << 4);
+}
+
+static void pms_antisnow(struct pms *dev, short snow)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x06, 0xf3, (snow & 0x03) << 2);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x06, 0xf3, (snow & 0x03) << 2);
+}
+
+static void pms_sharpness(struct pms *dev, short sharp)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x06, 0xfc, sharp & 0x03);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x06, 0xfc, sharp & 0x03);
+}
+
+static void pms_chromaagc(struct pms *dev, short agc)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x0c, 0x9f, (agc & 0x03) << 5);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x0c, 0x9f, (agc & 0x03) << 5);
+}
+
+static void pms_vertnoise(struct pms *dev, short noise)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x10, 0xfc, noise & 3);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x10, 0xfc, noise & 3);
+}
+
+static void pms_forcecolour(struct pms *dev, short colour)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x0c, 0x7f, (colour & 1) << 7);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x0c, 0x7, (colour & 1) << 7);
+}
+
+static void pms_antigamma(struct pms *dev, short gamma)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0xb8, 0x00, 0x7f, (gamma & 1) << 7);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x20, 0x7, (gamma & 1) << 7);
+}
+
+static void pms_prefilter(struct pms *dev, short filter)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x06, 0xbf, (filter & 1) << 6);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x06, 0xbf, (filter & 1) << 6);
+}
+
+static void pms_hfilter(struct pms *dev, short filter)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0xb8, 0x04, 0x1f, (filter & 7) << 5);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x24, 0x1f, (filter & 7) << 5);
+}
+
+static void pms_vfilter(struct pms *dev, short filter)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0xb8, 0x08, 0x9f, (filter & 3) << 5);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x28, 0x9f, (filter & 3) << 5);
+}
+
+static void pms_killcolour(struct pms *dev, short colour)
+{
+ if (dev->decoder == PHILIPS2) {
+ pms_i2c_andor(dev, 0x8a, 0x08, 0x07, (colour & 0x1f) << 3);
+ pms_i2c_andor(dev, 0x8a, 0x09, 0x07, (colour & 0x1f) << 3);
+ } else if (dev->decoder == PHILIPS1) {
+ pms_i2c_andor(dev, 0x42, 0x08, 0x07, (colour & 0x1f) << 3);
+ pms_i2c_andor(dev, 0x42, 0x09, 0x07, (colour & 0x1f) << 3);
+ }
+}
+
+static void pms_chromagain(struct pms *dev, short chroma)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_write(dev, 0x8a, 0x11, chroma);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_write(dev, 0x42, 0x11, chroma);
+}
+
+
+static void pms_spacialcompl(struct pms *dev, short data)
+{
+ mvv_write(dev, 0x3b, data);
+}
+
+static void pms_spacialcomph(struct pms *dev, short data)
+{
+ mvv_write(dev, 0x3a, data);
+}
+
+static void pms_vstart(struct pms *dev, short start)
+{
+ mvv_write(dev, 0x16, start);
+ mvv_write(dev, 0x17, (start >> 8) & 0x01);
+}
+
+#endif
+
+static void pms_secamcross(struct pms *dev, short cross)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x0f, 0xdf, (cross & 1) << 5);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x0f, 0xdf, (cross & 1) << 5);
+}
+
+
+static void pms_swsense(struct pms *dev, short sense)
+{
+ if (dev->decoder == PHILIPS2) {
+ pms_i2c_write(dev, 0x8a, 0x0a, sense);
+ pms_i2c_write(dev, 0x8a, 0x0b, sense);
+ } else if (dev->decoder == PHILIPS1) {
+ pms_i2c_write(dev, 0x42, 0x0a, sense);
+ pms_i2c_write(dev, 0x42, 0x0b, sense);
+ }
+}
+
+
+static void pms_framerate(struct pms *dev, short frr)
+{
+ int fps = (dev->std & V4L2_STD_525_60) ? 30 : 25;
+
+ if (frr == 0)
+ return;
+ fps = fps/frr;
+ mvv_write(dev, 0x14, 0x80 | fps);
+ mvv_write(dev, 0x15, 1);
+}
+
+static void pms_vert(struct pms *dev, u8 deciden, u8 decinum)
+{
+ mvv_write(dev, 0x1c, deciden); /* Denominator */
+ mvv_write(dev, 0x1d, decinum); /* Numerator */
+}
+
+/*
+ * Turn 16bit ratios into best small ratio the chipset can grok
+ */
+
+static void pms_vertdeci(struct pms *dev, unsigned short decinum, unsigned short deciden)
+{
+ /* Knock it down by / 5 once */
+ if (decinum % 5 == 0) {
+ deciden /= 5;
+ decinum /= 5;
+ }
+ /*
+ * 3's
+ */
+ while (decinum % 3 == 0 && deciden % 3 == 0) {
+ deciden /= 3;
+ decinum /= 3;
+ }
+ /*
+ * 2's
+ */
+ while (decinum % 2 == 0 && deciden % 2 == 0) {
+ decinum /= 2;
+ deciden /= 2;
+ }
+ /*
+ * Fudgyify
+ */
+ while (deciden > 32) {
+ deciden /= 2;
+ decinum = (decinum + 1) / 2;
+ }
+ if (deciden == 32)
+ deciden--;
+ pms_vert(dev, deciden, decinum);
+}
+
+static void pms_horzdeci(struct pms *dev, short decinum, short deciden)
+{
+ if (decinum <= 512) {
+ if (decinum % 5 == 0) {
+ decinum /= 5;
+ deciden /= 5;
+ }
+ } else {
+ decinum = 512;
+ deciden = 640; /* 768 would be ideal */
+ }
+
+ while (((decinum | deciden) & 1) == 0) {
+ decinum >>= 1;
+ deciden >>= 1;
+ }
+ while (deciden > 32) {
+ deciden >>= 1;
+ decinum = (decinum + 1) >> 1;
+ }
+ if (deciden == 32)
+ deciden--;
+
+ mvv_write(dev, 0x24, 0x80 | deciden);
+ mvv_write(dev, 0x25, decinum);
+}
+
+static void pms_resolution(struct pms *dev, short width, short height)
+{
+ int fg_height;
+
+ fg_height = height;
+ if (fg_height > 280)
+ fg_height = 280;
+
+ mvv_write(dev, 0x18, fg_height);
+ mvv_write(dev, 0x19, fg_height >> 8);
+
+ if (dev->std & V4L2_STD_525_60) {
+ mvv_write(dev, 0x1a, 0xfc);
+ mvv_write(dev, 0x1b, 0x00);
+ if (height > fg_height)
+ pms_vertdeci(dev, 240, 240);
+ else
+ pms_vertdeci(dev, fg_height, 240);
+ } else {
+ mvv_write(dev, 0x1a, 0x1a);
+ mvv_write(dev, 0x1b, 0x01);
+ if (fg_height > 256)
+ pms_vertdeci(dev, 270, 270);
+ else
+ pms_vertdeci(dev, fg_height, 270);
+ }
+ mvv_write(dev, 0x12, 0);
+ mvv_write(dev, 0x13, MVVMEMORYWIDTH);
+ mvv_write(dev, 0x42, 0x00);
+ mvv_write(dev, 0x43, 0x00);
+ mvv_write(dev, 0x44, MVVMEMORYWIDTH);
+
+ mvv_write(dev, 0x22, width + 8);
+ mvv_write(dev, 0x23, (width + 8) >> 8);
+
+ if (dev->std & V4L2_STD_525_60)
+ pms_horzdeci(dev, width, 640);
+ else
+ pms_horzdeci(dev, width + 8, 768);
+
+ mvv_write(dev, 0x30, mvv_read(dev, 0x30) & 0xfe);
+ mvv_write(dev, 0x08, mvv_read(dev, 0x08) | 0x01);
+ mvv_write(dev, 0x01, mvv_read(dev, 0x01) & 0xfd);
+ mvv_write(dev, 0x32, 0x00);
+ mvv_write(dev, 0x33, MVVMEMORYWIDTH);
+}
+
+
+/*
+ * Set Input
+ */
+
+static void pms_vcrinput(struct pms *dev, short input)
+{
+ if (dev->decoder == PHILIPS2)
+ pms_i2c_andor(dev, 0x8a, 0x0d, 0x7f, (input & 1) << 7);
+ else if (dev->decoder == PHILIPS1)
+ pms_i2c_andor(dev, 0x42, 0x0d, 0x7f, (input & 1) << 7);
+}
+
+
+static int pms_capture(struct pms *dev, char __user *buf, int rgb555, int count)
+{
+ int y;
+ int dw = 2 * dev->width;
+ char *tmp; /* using a temp buffer is faster than direct */
+ int cnt = 0;
+ int len = 0;
+ unsigned char r8 = 0x5; /* value for reg8 */
+
+ tmp = kmalloc(dw + 32, GFP_KERNEL);
+ if (!tmp)
+ return 0;
+
+ if (rgb555)
+ r8 |= 0x20; /* else use untranslated rgb = 565 */
+ mvv_write(dev, 0x08, r8); /* capture rgb555/565, init DRAM, PC enable */
+
+/* printf("%d %d %d %d %d %x %x\n",width,height,voff,nom,den,mvv_buf); */
+
+ for (y = 0; y < dev->height; y++) {
+ writeb(0, dev->mem); /* synchronisiert neue Zeile */
+
+ /*
+ * This is in truth a fifo, be very careful as if you
+ * forgot this odd things will occur 8)
+ */
+
+ memcpy_fromio(tmp, dev->mem, dw + 32); /* discard 16 word */
+ cnt -= dev->height;
+ while (cnt <= 0) {
+ /*
+ * Don't copy too far
+ */
+ int dt = dw;
+ if (dt + len > count)
+ dt = count - len;
+ cnt += dev->height;
+ if (copy_to_user(buf, tmp + 32, dt))
+ return len ? len : -EFAULT;
+ buf += dt;
+ len += dt;
+ }
+ }
+ kfree(tmp);
+ return len;
+}
+
+
+/*
+ * Video4linux interfacing
+ */
+
+static int pms_querycap(struct file *file, void *priv,
+ struct v4l2_capability *vcap)
+{
+ struct pms *dev = video_drvdata(file);
+
+ strlcpy(vcap->driver, dev->v4l2_dev.name, sizeof(vcap->driver));
+ strlcpy(vcap->card, "Mediavision PMS", sizeof(vcap->card));
+ snprintf(vcap->bus_info, sizeof(vcap->bus_info),
+ "ISA:%s", dev->v4l2_dev.name);
+ vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
+ vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static int pms_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
+{
+ static const char *inputs[4] = {
+ "Composite",
+ "S-Video",
+ "Composite (VCR)",
+ "S-Video (VCR)"
+ };
+
+ if (vin->index > 3)
+ return -EINVAL;
+ strlcpy(vin->name, inputs[vin->index], sizeof(vin->name));
+ vin->type = V4L2_INPUT_TYPE_CAMERA;
+ vin->audioset = 0;
+ vin->tuner = 0;
+ vin->std = V4L2_STD_ALL;
+ vin->status = 0;
+ return 0;
+}
+
+static int pms_g_input(struct file *file, void *fh, unsigned int *inp)
+{
+ struct pms *dev = video_drvdata(file);
+
+ *inp = dev->input;
+ return 0;
+}
+
+static int pms_s_input(struct file *file, void *fh, unsigned int inp)
+{
+ struct pms *dev = video_drvdata(file);
+
+ if (inp > 3)
+ return -EINVAL;
+
+ dev->input = inp;
+ pms_videosource(dev, inp & 1);
+ pms_vcrinput(dev, inp >> 1);
+ return 0;
+}
+
+static int pms_g_std(struct file *file, void *fh, v4l2_std_id *std)
+{
+ struct pms *dev = video_drvdata(file);
+
+ *std = dev->std;
+ return 0;
+}
+
+static int pms_s_std(struct file *file, void *fh, v4l2_std_id std)
+{
+ struct pms *dev = video_drvdata(file);
+ int ret = 0;
+
+ dev->std = std;
+ if (dev->std & V4L2_STD_NTSC) {
+ pms_framerate(dev, 30);
+ pms_secamcross(dev, 0);
+ pms_format(dev, 1);
+ } else if (dev->std & V4L2_STD_PAL) {
+ pms_framerate(dev, 25);
+ pms_secamcross(dev, 0);
+ pms_format(dev, 2);
+ } else if (dev->std & V4L2_STD_SECAM) {
+ pms_framerate(dev, 25);
+ pms_secamcross(dev, 1);
+ pms_format(dev, 2);
+ } else {
+ ret = -EINVAL;
+ }
+ /*
+ switch (v->mode) {
+ case VIDEO_MODE_AUTO:
+ pms_framerate(dev, 25);
+ pms_secamcross(dev, 0);
+ pms_format(dev, 0);
+ break;
+ }*/
+ return ret;
+}
+
+static int pms_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct pms *dev = container_of(ctrl->handler, struct pms, hdl);
+ int ret = 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ pms_brightness(dev, ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ pms_contrast(dev, ctrl->val);
+ break;
+ case V4L2_CID_SATURATION:
+ pms_saturation(dev, ctrl->val);
+ break;
+ case V4L2_CID_HUE:
+ pms_hue(dev, ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int pms_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct pms *dev = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ pix->width = dev->width;
+ pix->height = dev->height;
+ pix->pixelformat = dev->width == 15 ?
+ V4L2_PIX_FMT_RGB555 : V4L2_PIX_FMT_RGB565;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = 2 * dev->width;
+ pix->sizeimage = 2 * dev->width * dev->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int pms_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ if (pix->height < 16 || pix->height > 480)
+ return -EINVAL;
+ if (pix->width < 16 || pix->width > 640)
+ return -EINVAL;
+ if (pix->pixelformat != V4L2_PIX_FMT_RGB555 &&
+ pix->pixelformat != V4L2_PIX_FMT_RGB565)
+ return -EINVAL;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = 2 * pix->width;
+ pix->sizeimage = 2 * pix->width * pix->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SRGB;
+ return 0;
+}
+
+static int pms_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct pms *dev = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+ int ret = pms_try_fmt_vid_cap(file, fh, fmt);
+
+ if (ret)
+ return ret;
+ dev->width = pix->width;
+ dev->height = pix->height;
+ dev->depth = (pix->pixelformat == V4L2_PIX_FMT_RGB555) ? 15 : 16;
+ pms_resolution(dev, dev->width, dev->height);
+ /* Ok we figured out what to use from our wide choice */
+ return 0;
+}
+
+static int pms_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
+{
+ static struct v4l2_fmtdesc formats[] = {
+ { 0, 0, 0,
+ "RGB 5:5:5", V4L2_PIX_FMT_RGB555,
+ { 0, 0, 0, 0 }
+ },
+ { 1, 0, 0,
+ "RGB 5:6:5", V4L2_PIX_FMT_RGB565,
+ { 0, 0, 0, 0 }
+ },
+ };
+ enum v4l2_buf_type type = fmt->type;
+
+ if (fmt->index > 1)
+ return -EINVAL;
+
+ *fmt = formats[fmt->index];
+ fmt->type = type;
+ return 0;
+}
+
+static ssize_t pms_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct pms *dev = video_drvdata(file);
+ int len;
+
+ len = pms_capture(dev, buf, (dev->depth == 15), count);
+ return len;
+}
+
+static unsigned int pms_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct v4l2_fh *fh = file->private_data;
+ unsigned int res = POLLIN | POLLRDNORM;
+
+ if (v4l2_event_pending(fh))
+ res |= POLLPRI;
+ poll_wait(file, &fh->wait, wait);
+ return res;
+}
+
+static const struct v4l2_file_operations pms_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = v4l2_fh_release,
+ .poll = pms_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .read = pms_read,
+};
+
+static const struct v4l2_ioctl_ops pms_ioctl_ops = {
+ .vidioc_querycap = pms_querycap,
+ .vidioc_g_input = pms_g_input,
+ .vidioc_s_input = pms_s_input,
+ .vidioc_enum_input = pms_enum_input,
+ .vidioc_g_std = pms_g_std,
+ .vidioc_s_std = pms_s_std,
+ .vidioc_enum_fmt_vid_cap = pms_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = pms_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = pms_s_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = pms_try_fmt_vid_cap,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+/*
+ * Probe for and initialise the Mediavision PMS
+ */
+
+static int init_mediavision(struct pms *dev)
+{
+ int idec, decst;
+ int i;
+ static const unsigned char i2c_defs[] = {
+ 0x4c, 0x30, 0x00, 0xe8,
+ 0xb6, 0xe2, 0x00, 0x00,
+ 0xff, 0xff, 0x00, 0x00,
+ 0x00, 0x00, 0x78, 0x98,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x34, 0x0a, 0xf4, 0xce,
+ 0xe4
+ };
+
+ dev->mem = ioremap(mem_base, 0x800);
+ if (!dev->mem)
+ return -ENOMEM;
+
+ if (!request_region(0x9a01, 1, "Mediavision PMS config")) {
+ printk(KERN_WARNING "mediavision: unable to detect: 0x9a01 in use.\n");
+ iounmap(dev->mem);
+ return -EBUSY;
+ }
+ if (!request_region(dev->io, 3, "Mediavision PMS")) {
+ printk(KERN_WARNING "mediavision: I/O port %d in use.\n", dev->io);
+ release_region(0x9a01, 1);
+ iounmap(dev->mem);
+ return -EBUSY;
+ }
+ outb(0xb8, 0x9a01); /* Unlock */
+ outb(dev->io >> 4, 0x9a01); /* Set IO port */
+
+
+ decst = pms_i2c_stat(dev, 0x43);
+
+ if (decst != -1)
+ idec = 2;
+ else if (pms_i2c_stat(dev, 0xb9) != -1)
+ idec = 3;
+ else if (pms_i2c_stat(dev, 0x8b) != -1)
+ idec = 1;
+ else
+ idec = 0;
+
+ printk(KERN_INFO "PMS type is %d\n", idec);
+ if (idec == 0) {
+ release_region(dev->io, 3);
+ release_region(0x9a01, 1);
+ iounmap(dev->mem);
+ return -ENODEV;
+ }
+
+ /*
+ * Ok we have a PMS of some sort
+ */
+
+ mvv_write(dev, 0x04, mem_base >> 12); /* Set the memory area */
+
+ /* Ok now load the defaults */
+
+ for (i = 0; i < 0x19; i++) {
+ if (i2c_defs[i] == 0xff)
+ pms_i2c_andor(dev, 0x8a, i, 0x07, 0x00);
+ else
+ pms_i2c_write(dev, 0x8a, i, i2c_defs[i]);
+ }
+
+ pms_i2c_write(dev, 0xb8, 0x00, 0x12);
+ pms_i2c_write(dev, 0xb8, 0x04, 0x00);
+ pms_i2c_write(dev, 0xb8, 0x07, 0x00);
+ pms_i2c_write(dev, 0xb8, 0x08, 0x00);
+ pms_i2c_write(dev, 0xb8, 0x09, 0xff);
+ pms_i2c_write(dev, 0xb8, 0x0a, 0x00);
+ pms_i2c_write(dev, 0xb8, 0x0b, 0x10);
+ pms_i2c_write(dev, 0xb8, 0x10, 0x03);
+
+ mvv_write(dev, 0x01, 0x00);
+ mvv_write(dev, 0x05, 0xa0);
+ mvv_write(dev, 0x08, 0x25);
+ mvv_write(dev, 0x09, 0x00);
+ mvv_write(dev, 0x0a, 0x20 | MVVMEMORYWIDTH);
+
+ mvv_write(dev, 0x10, 0x02);
+ mvv_write(dev, 0x1e, 0x0c);
+ mvv_write(dev, 0x1f, 0x03);
+ mvv_write(dev, 0x26, 0x06);
+
+ mvv_write(dev, 0x2b, 0x00);
+ mvv_write(dev, 0x2c, 0x20);
+ mvv_write(dev, 0x2d, 0x00);
+ mvv_write(dev, 0x2f, 0x70);
+ mvv_write(dev, 0x32, 0x00);
+ mvv_write(dev, 0x33, MVVMEMORYWIDTH);
+ mvv_write(dev, 0x34, 0x00);
+ mvv_write(dev, 0x35, 0x00);
+ mvv_write(dev, 0x3a, 0x80);
+ mvv_write(dev, 0x3b, 0x10);
+ mvv_write(dev, 0x20, 0x00);
+ mvv_write(dev, 0x21, 0x00);
+ mvv_write(dev, 0x30, 0x22);
+ return 0;
+}
+
+/*
+ * Initialization and module stuff
+ */
+
+#ifndef MODULE
+static int enable;
+module_param(enable, int, 0);
+#endif
+
+static const struct v4l2_ctrl_ops pms_ctrl_ops = {
+ .s_ctrl = pms_s_ctrl,
+};
+
+static int pms_probe(struct device *pdev, unsigned int card)
+{
+ struct pms *dev;
+ struct v4l2_device *v4l2_dev;
+ struct v4l2_ctrl_handler *hdl;
+ int res;
+
+#ifndef MODULE
+ if (!enable) {
+ pr_err("PMS: not enabled, use pms.enable=1 to probe\n");
+ return -ENODEV;
+ }
+#endif
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (dev == NULL)
+ return -ENOMEM;
+
+ dev->decoder = PHILIPS2;
+ dev->io = io_port;
+ dev->data = io_port + 1;
+ v4l2_dev = &dev->v4l2_dev;
+ hdl = &dev->hdl;
+
+ res = v4l2_device_register(pdev, v4l2_dev);
+ if (res < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ goto free_dev;
+ }
+ v4l2_info(v4l2_dev, "Mediavision Pro Movie Studio driver 0.05\n");
+
+ res = init_mediavision(dev);
+ if (res) {
+ v4l2_err(v4l2_dev, "Board not found.\n");
+ goto free_io;
+ }
+
+ v4l2_ctrl_handler_init(hdl, 4);
+ v4l2_ctrl_new_std(hdl, &pms_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 255, 1, 139);
+ v4l2_ctrl_new_std(hdl, &pms_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 255, 1, 70);
+ v4l2_ctrl_new_std(hdl, &pms_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 255, 1, 64);
+ v4l2_ctrl_new_std(hdl, &pms_ctrl_ops,
+ V4L2_CID_HUE, 0, 255, 1, 0);
+ if (hdl->error) {
+ res = hdl->error;
+ goto free_hdl;
+ }
+
+ mutex_init(&dev->lock);
+ strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
+ dev->vdev.v4l2_dev = v4l2_dev;
+ dev->vdev.ctrl_handler = hdl;
+ dev->vdev.fops = &pms_fops;
+ dev->vdev.ioctl_ops = &pms_ioctl_ops;
+ dev->vdev.release = video_device_release_empty;
+ dev->vdev.lock = &dev->lock;
+ dev->vdev.tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM;
+ video_set_drvdata(&dev->vdev, dev);
+ dev->std = V4L2_STD_NTSC_M;
+ dev->height = 240;
+ dev->width = 320;
+ dev->depth = 16;
+ pms_swsense(dev, 75);
+ pms_resolution(dev, 320, 240);
+ pms_videosource(dev, 0);
+ pms_vcrinput(dev, 0);
+ v4l2_ctrl_handler_setup(hdl);
+ res = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, video_nr);
+ if (res >= 0)
+ return 0;
+
+free_hdl:
+ v4l2_ctrl_handler_free(hdl);
+ v4l2_device_unregister(&dev->v4l2_dev);
+free_io:
+ release_region(dev->io, 3);
+ release_region(0x9a01, 1);
+ iounmap(dev->mem);
+free_dev:
+ kfree(dev);
+ return res;
+}
+
+static int pms_remove(struct device *pdev, unsigned int card)
+{
+ struct pms *dev = dev_get_drvdata(pdev);
+
+ video_unregister_device(&dev->vdev);
+ v4l2_ctrl_handler_free(&dev->hdl);
+ release_region(dev->io, 3);
+ release_region(0x9a01, 1);
+ iounmap(dev->mem);
+ return 0;
+}
+
+static struct isa_driver pms_driver = {
+ .probe = pms_probe,
+ .remove = pms_remove,
+ .driver = {
+ .name = "pms",
+ },
+};
+
+static int __init pms_init(void)
+{
+ return isa_register_driver(&pms_driver, 1);
+}
+
+static void __exit pms_exit(void)
+{
+ isa_unregister_driver(&pms_driver);
+}
+
+module_init(pms_init);
+module_exit(pms_exit);
diff --git a/drivers/staging/media/parport/w9966.c b/drivers/staging/media/parport/w9966.c
new file mode 100644
index 0000000..f7502f3
--- /dev/null
+++ b/drivers/staging/media/parport/w9966.c
@@ -0,0 +1,980 @@
+/*
+ Winbond w9966cf Webcam parport driver.
+
+ Version 0.33
+
+ Copyright (C) 2001 Jakob Kemi <jakob.kemi@post.utfors.se>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+/*
+ Supported devices:
+ *Lifeview FlyCam Supra (using the Philips saa7111a chip)
+
+ Does any other model using the w9966 interface chip exist ?
+
+ Todo:
+
+ *Add a working EPP mode, since DMA ECP read isn't implemented
+ in the parport drivers. (That's why it's so sloow)
+
+ *Add support for other ccd-control chips than the saa7111
+ please send me feedback on what kind of chips you have.
+
+ *Add proper probing. I don't know what's wrong with the IEEE1284
+ parport drivers but (IEEE1284_MODE_NIBBLE|IEEE1284_DEVICE_ID)
+ and nibble read seems to be broken for some peripherals.
+
+ *Add probing for onboard SRAM, port directions etc. (if possible)
+
+ *Add support for the hardware compressed modes (maybe using v4l2)
+
+ *Fix better support for the capture window (no skewed images, v4l
+ interface to capt. window)
+
+ *Probably some bugs that I don't know of
+
+ Please support me by sending feedback!
+
+ Changes:
+
+ Alan Cox: Removed RGB mode for kernel merge, added THIS_MODULE
+ and owner support for newer module locks
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/videodev2.h>
+#include <linux/slab.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <linux/parport.h>
+
+/*#define DEBUG*/ /* Undef me for production */
+
+#ifdef DEBUG
+#define DPRINTF(x, a...) printk(KERN_DEBUG "W9966: %s(): "x, __func__ , ##a)
+#else
+#define DPRINTF(x...)
+#endif
+
+/*
+ * Defines, simple typedefs etc.
+ */
+
+#define W9966_DRIVERNAME "W9966CF Webcam"
+#define W9966_MAXCAMS 4 /* Maximum number of cameras */
+#define W9966_RBUFFER 2048 /* Read buffer (must be an even number) */
+#define W9966_SRAMSIZE 131072 /* 128kb */
+#define W9966_SRAMID 0x02 /* check w9966cf.pdf */
+
+/* Empirically determined window limits */
+#define W9966_WND_MIN_X 16
+#define W9966_WND_MIN_Y 14
+#define W9966_WND_MAX_X 705
+#define W9966_WND_MAX_Y 253
+#define W9966_WND_MAX_W (W9966_WND_MAX_X - W9966_WND_MIN_X)
+#define W9966_WND_MAX_H (W9966_WND_MAX_Y - W9966_WND_MIN_Y)
+
+/* Keep track of our current state */
+#define W9966_STATE_PDEV 0x01
+#define W9966_STATE_CLAIMED 0x02
+#define W9966_STATE_VDEV 0x04
+
+#define W9966_I2C_W_ID 0x48
+#define W9966_I2C_R_ID 0x49
+#define W9966_I2C_R_DATA 0x08
+#define W9966_I2C_R_CLOCK 0x04
+#define W9966_I2C_W_DATA 0x02
+#define W9966_I2C_W_CLOCK 0x01
+
+struct w9966 {
+ struct v4l2_device v4l2_dev;
+ struct v4l2_ctrl_handler hdl;
+ unsigned char dev_state;
+ unsigned char i2c_state;
+ unsigned short ppmode;
+ struct parport *pport;
+ struct pardevice *pdev;
+ struct video_device vdev;
+ unsigned short width;
+ unsigned short height;
+ unsigned char brightness;
+ signed char contrast;
+ signed char color;
+ signed char hue;
+ struct mutex lock;
+};
+
+/*
+ * Module specific properties
+ */
+
+MODULE_AUTHOR("Jakob Kemi <jakob.kemi@post.utfors.se>");
+MODULE_DESCRIPTION("Winbond w9966cf WebCam driver (0.32)");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.33.1");
+
+#ifdef MODULE
+static char *pardev[] = {[0 ... W9966_MAXCAMS] = ""};
+#else
+static char *pardev[] = {[0 ... W9966_MAXCAMS] = "aggressive"};
+#endif
+module_param_array(pardev, charp, NULL, 0);
+MODULE_PARM_DESC(pardev, "pardev: where to search for\n"
+ "\teach camera. 'aggressive' means brute-force search.\n"
+ "\tEg: >pardev=parport3,aggressive,parport2,parport1< would assign\n"
+ "\tcam 1 to parport3 and search every parport for cam 2 etc...");
+
+static int parmode;
+module_param(parmode, int, 0);
+MODULE_PARM_DESC(parmode, "parmode: transfer mode (0=auto, 1=ecp, 2=epp");
+
+static int video_nr = -1;
+module_param(video_nr, int, 0);
+
+static struct w9966 w9966_cams[W9966_MAXCAMS];
+
+/*
+ * Private function defines
+ */
+
+
+/* Set camera phase flags, so we know what to uninit when terminating */
+static inline void w9966_set_state(struct w9966 *cam, int mask, int val)
+{
+ cam->dev_state = (cam->dev_state & ~mask) ^ val;
+}
+
+/* Get camera phase flags */
+static inline int w9966_get_state(struct w9966 *cam, int mask, int val)
+{
+ return ((cam->dev_state & mask) == val);
+}
+
+/* Claim parport for ourself */
+static void w9966_pdev_claim(struct w9966 *cam)
+{
+ if (w9966_get_state(cam, W9966_STATE_CLAIMED, W9966_STATE_CLAIMED))
+ return;
+ parport_claim_or_block(cam->pdev);
+ w9966_set_state(cam, W9966_STATE_CLAIMED, W9966_STATE_CLAIMED);
+}
+
+/* Release parport for others to use */
+static void w9966_pdev_release(struct w9966 *cam)
+{
+ if (w9966_get_state(cam, W9966_STATE_CLAIMED, 0))
+ return;
+ parport_release(cam->pdev);
+ w9966_set_state(cam, W9966_STATE_CLAIMED, 0);
+}
+
+/* Read register from W9966 interface-chip
+ Expects a claimed pdev
+ -1 on error, else register data (byte) */
+static int w9966_read_reg(struct w9966 *cam, int reg)
+{
+ /* ECP, read, regtransfer, REG, REG, REG, REG, REG */
+ const unsigned char addr = 0x80 | (reg & 0x1f);
+ unsigned char val;
+
+ if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_ADDR) != 0)
+ return -1;
+ if (parport_write(cam->pport, &addr, 1) != 1)
+ return -1;
+ if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_DATA) != 0)
+ return -1;
+ if (parport_read(cam->pport, &val, 1) != 1)
+ return -1;
+
+ return val;
+}
+
+/* Write register to W9966 interface-chip
+ Expects a claimed pdev
+ -1 on error */
+static int w9966_write_reg(struct w9966 *cam, int reg, int data)
+{
+ /* ECP, write, regtransfer, REG, REG, REG, REG, REG */
+ const unsigned char addr = 0xc0 | (reg & 0x1f);
+ const unsigned char val = data;
+
+ if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_ADDR) != 0)
+ return -1;
+ if (parport_write(cam->pport, &addr, 1) != 1)
+ return -1;
+ if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_DATA) != 0)
+ return -1;
+ if (parport_write(cam->pport, &val, 1) != 1)
+ return -1;
+
+ return 0;
+}
+
+/*
+ * Ugly and primitive i2c protocol functions
+ */
+
+/* Sets the data line on the i2c bus.
+ Expects a claimed pdev. */
+static void w9966_i2c_setsda(struct w9966 *cam, int state)
+{
+ if (state)
+ cam->i2c_state |= W9966_I2C_W_DATA;
+ else
+ cam->i2c_state &= ~W9966_I2C_W_DATA;
+
+ w9966_write_reg(cam, 0x18, cam->i2c_state);
+ udelay(5);
+}
+
+/* Get peripheral clock line
+ Expects a claimed pdev. */
+static int w9966_i2c_getscl(struct w9966 *cam)
+{
+ const unsigned char state = w9966_read_reg(cam, 0x18);
+ return ((state & W9966_I2C_R_CLOCK) > 0);
+}
+
+/* Sets the clock line on the i2c bus.
+ Expects a claimed pdev. -1 on error */
+static int w9966_i2c_setscl(struct w9966 *cam, int state)
+{
+ unsigned long timeout;
+
+ if (state)
+ cam->i2c_state |= W9966_I2C_W_CLOCK;
+ else
+ cam->i2c_state &= ~W9966_I2C_W_CLOCK;
+
+ w9966_write_reg(cam, 0x18, cam->i2c_state);
+ udelay(5);
+
+ /* we go to high, we also expect the peripheral to ack. */
+ if (state) {
+ timeout = jiffies + 100;
+ while (!w9966_i2c_getscl(cam)) {
+ if (time_after(jiffies, timeout))
+ return -1;
+ }
+ }
+ return 0;
+}
+
+#if 0
+/* Get peripheral data line
+ Expects a claimed pdev. */
+static int w9966_i2c_getsda(struct w9966 *cam)
+{
+ const unsigned char state = w9966_read_reg(cam, 0x18);
+ return ((state & W9966_I2C_R_DATA) > 0);
+}
+#endif
+
+/* Write a byte with ack to the i2c bus.
+ Expects a claimed pdev. -1 on error */
+static int w9966_i2c_wbyte(struct w9966 *cam, int data)
+{
+ int i;
+
+ for (i = 7; i >= 0; i--) {
+ w9966_i2c_setsda(cam, (data >> i) & 0x01);
+
+ if (w9966_i2c_setscl(cam, 1) == -1)
+ return -1;
+ w9966_i2c_setscl(cam, 0);
+ }
+
+ w9966_i2c_setsda(cam, 1);
+
+ if (w9966_i2c_setscl(cam, 1) == -1)
+ return -1;
+ w9966_i2c_setscl(cam, 0);
+
+ return 0;
+}
+
+/* Read a data byte with ack from the i2c-bus
+ Expects a claimed pdev. -1 on error */
+#if 0
+static int w9966_i2c_rbyte(struct w9966 *cam)
+{
+ unsigned char data = 0x00;
+ int i;
+
+ w9966_i2c_setsda(cam, 1);
+
+ for (i = 0; i < 8; i++) {
+ if (w9966_i2c_setscl(cam, 1) == -1)
+ return -1;
+ data = data << 1;
+ if (w9966_i2c_getsda(cam))
+ data |= 0x01;
+
+ w9966_i2c_setscl(cam, 0);
+ }
+ return data;
+}
+#endif
+
+/* Read a register from the i2c device.
+ Expects claimed pdev. -1 on error */
+#if 0
+static int w9966_read_reg_i2c(struct w9966 *cam, int reg)
+{
+ int data;
+
+ w9966_i2c_setsda(cam, 0);
+ w9966_i2c_setscl(cam, 0);
+
+ if (w9966_i2c_wbyte(cam, W9966_I2C_W_ID) == -1 ||
+ w9966_i2c_wbyte(cam, reg) == -1)
+ return -1;
+
+ w9966_i2c_setsda(cam, 1);
+ if (w9966_i2c_setscl(cam, 1) == -1)
+ return -1;
+ w9966_i2c_setsda(cam, 0);
+ w9966_i2c_setscl(cam, 0);
+
+ if (w9966_i2c_wbyte(cam, W9966_I2C_R_ID) == -1)
+ return -1;
+ data = w9966_i2c_rbyte(cam);
+ if (data == -1)
+ return -1;
+
+ w9966_i2c_setsda(cam, 0);
+
+ if (w9966_i2c_setscl(cam, 1) == -1)
+ return -1;
+ w9966_i2c_setsda(cam, 1);
+
+ return data;
+}
+#endif
+
+/* Write a register to the i2c device.
+ Expects claimed pdev. -1 on error */
+static int w9966_write_reg_i2c(struct w9966 *cam, int reg, int data)
+{
+ w9966_i2c_setsda(cam, 0);
+ w9966_i2c_setscl(cam, 0);
+
+ if (w9966_i2c_wbyte(cam, W9966_I2C_W_ID) == -1 ||
+ w9966_i2c_wbyte(cam, reg) == -1 ||
+ w9966_i2c_wbyte(cam, data) == -1)
+ return -1;
+
+ w9966_i2c_setsda(cam, 0);
+ if (w9966_i2c_setscl(cam, 1) == -1)
+ return -1;
+
+ w9966_i2c_setsda(cam, 1);
+
+ return 0;
+}
+
+/* Find a good length for capture window (used both for W and H)
+ A bit ugly but pretty functional. The capture length
+ have to match the downscale */
+static int w9966_findlen(int near, int size, int maxlen)
+{
+ int bestlen = size;
+ int besterr = abs(near - bestlen);
+ int len;
+
+ for (len = size + 1; len < maxlen; len++) {
+ int err;
+ if (((64 * size) % len) != 0)
+ continue;
+
+ err = abs(near - len);
+
+ /* Only continue as long as we keep getting better values */
+ if (err > besterr)
+ break;
+
+ besterr = err;
+ bestlen = len;
+ }
+
+ return bestlen;
+}
+
+/* Modify capture window (if necessary)
+ and calculate downscaling
+ Return -1 on error */
+static int w9966_calcscale(int size, int min, int max, int *beg, int *end, unsigned char *factor)
+{
+ int maxlen = max - min;
+ int len = *end - *beg + 1;
+ int newlen = w9966_findlen(len, size, maxlen);
+ int err = newlen - len;
+
+ /* Check for bad format */
+ if (newlen > maxlen || newlen < size)
+ return -1;
+
+ /* Set factor (6 bit fixed) */
+ *factor = (64 * size) / newlen;
+ if (*factor == 64)
+ *factor = 0x00; /* downscale is disabled */
+ else
+ *factor |= 0x80; /* set downscale-enable bit */
+
+ /* Modify old beginning and end */
+ *beg -= err / 2;
+ *end += err - (err / 2);
+
+ /* Move window if outside borders */
+ if (*beg < min) {
+ *end += min - *beg;
+ *beg += min - *beg;
+ }
+ if (*end > max) {
+ *beg -= *end - max;
+ *end -= *end - max;
+ }
+
+ return 0;
+}
+
+/* Setup the cameras capture window etc.
+ Expects a claimed pdev
+ return -1 on error */
+static int w9966_setup(struct w9966 *cam, int x1, int y1, int x2, int y2, int w, int h)
+{
+ unsigned int i;
+ unsigned int enh_s, enh_e;
+ unsigned char scale_x, scale_y;
+ unsigned char regs[0x1c];
+ unsigned char saa7111_regs[] = {
+ 0x21, 0x00, 0xd8, 0x23, 0x00, 0x80, 0x80, 0x00,
+ 0x88, 0x10, 0x80, 0x40, 0x40, 0x00, 0x01, 0x00,
+ 0x48, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x71, 0xe7, 0x00, 0x00, 0xc0
+ };
+
+
+ if (w * h * 2 > W9966_SRAMSIZE) {
+ DPRINTF("capture window exceeds SRAM size!.\n");
+ w = 200; h = 160; /* Pick default values */
+ }
+
+ w &= ~0x1;
+ if (w < 2)
+ w = 2;
+ if (h < 1)
+ h = 1;
+ if (w > W9966_WND_MAX_W)
+ w = W9966_WND_MAX_W;
+ if (h > W9966_WND_MAX_H)
+ h = W9966_WND_MAX_H;
+
+ cam->width = w;
+ cam->height = h;
+
+ enh_s = 0;
+ enh_e = w * h * 2;
+
+ /* Modify capture window if necessary and calculate downscaling */
+ if (w9966_calcscale(w, W9966_WND_MIN_X, W9966_WND_MAX_X, &x1, &x2, &scale_x) != 0 ||
+ w9966_calcscale(h, W9966_WND_MIN_Y, W9966_WND_MAX_Y, &y1, &y2, &scale_y) != 0)
+ return -1;
+
+ DPRINTF("%dx%d, x: %d<->%d, y: %d<->%d, sx: %d/64, sy: %d/64.\n",
+ w, h, x1, x2, y1, y2, scale_x & ~0x80, scale_y & ~0x80);
+
+ /* Setup registers */
+ regs[0x00] = 0x00; /* Set normal operation */
+ regs[0x01] = 0x18; /* Capture mode */
+ regs[0x02] = scale_y; /* V-scaling */
+ regs[0x03] = scale_x; /* H-scaling */
+
+ /* Capture window */
+ regs[0x04] = (x1 & 0x0ff); /* X-start (8 low bits) */
+ regs[0x05] = (x1 & 0x300)>>8; /* X-start (2 high bits) */
+ regs[0x06] = (y1 & 0x0ff); /* Y-start (8 low bits) */
+ regs[0x07] = (y1 & 0x300)>>8; /* Y-start (2 high bits) */
+ regs[0x08] = (x2 & 0x0ff); /* X-end (8 low bits) */
+ regs[0x09] = (x2 & 0x300)>>8; /* X-end (2 high bits) */
+ regs[0x0a] = (y2 & 0x0ff); /* Y-end (8 low bits) */
+
+ regs[0x0c] = W9966_SRAMID; /* SRAM-banks (1x 128kb) */
+
+ /* Enhancement layer */
+ regs[0x0d] = (enh_s & 0x000ff); /* Enh. start (0-7) */
+ regs[0x0e] = (enh_s & 0x0ff00) >> 8; /* Enh. start (8-15) */
+ regs[0x0f] = (enh_s & 0x70000) >> 16; /* Enh. start (16-17/18??) */
+ regs[0x10] = (enh_e & 0x000ff); /* Enh. end (0-7) */
+ regs[0x11] = (enh_e & 0x0ff00) >> 8; /* Enh. end (8-15) */
+ regs[0x12] = (enh_e & 0x70000) >> 16; /* Enh. end (16-17/18??) */
+
+ /* Misc */
+ regs[0x13] = 0x40; /* VEE control (raw 4:2:2) */
+ regs[0x17] = 0x00; /* ??? */
+ regs[0x18] = cam->i2c_state = 0x00; /* Serial bus */
+ regs[0x19] = 0xff; /* I/O port direction control */
+ regs[0x1a] = 0xff; /* I/O port data register */
+ regs[0x1b] = 0x10; /* ??? */
+
+ /* SAA7111 chip settings */
+ saa7111_regs[0x0a] = cam->brightness;
+ saa7111_regs[0x0b] = cam->contrast;
+ saa7111_regs[0x0c] = cam->color;
+ saa7111_regs[0x0d] = cam->hue;
+
+ /* Reset (ECP-fifo & serial-bus) */
+ if (w9966_write_reg(cam, 0x00, 0x03) == -1)
+ return -1;
+
+ /* Write regs to w9966cf chip */
+ for (i = 0; i < 0x1c; i++)
+ if (w9966_write_reg(cam, i, regs[i]) == -1)
+ return -1;
+
+ /* Write regs to saa7111 chip */
+ for (i = 0; i < 0x20; i++)
+ if (w9966_write_reg_i2c(cam, i, saa7111_regs[i]) == -1)
+ return -1;
+
+ return 0;
+}
+
+/*
+ * Video4linux interfacing
+ */
+
+static int cam_querycap(struct file *file, void *priv,
+ struct v4l2_capability *vcap)
+{
+ struct w9966 *cam = video_drvdata(file);
+
+ strlcpy(vcap->driver, cam->v4l2_dev.name, sizeof(vcap->driver));
+ strlcpy(vcap->card, W9966_DRIVERNAME, sizeof(vcap->card));
+ strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
+ vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
+ vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ return 0;
+}
+
+static int cam_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
+{
+ if (vin->index > 0)
+ return -EINVAL;
+ strlcpy(vin->name, "Camera", sizeof(vin->name));
+ vin->type = V4L2_INPUT_TYPE_CAMERA;
+ vin->audioset = 0;
+ vin->tuner = 0;
+ vin->std = 0;
+ vin->status = 0;
+ return 0;
+}
+
+static int cam_g_input(struct file *file, void *fh, unsigned int *inp)
+{
+ *inp = 0;
+ return 0;
+}
+
+static int cam_s_input(struct file *file, void *fh, unsigned int inp)
+{
+ return (inp > 0) ? -EINVAL : 0;
+}
+
+static int cam_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct w9966 *cam =
+ container_of(ctrl->handler, struct w9966, hdl);
+ int ret = 0;
+
+ mutex_lock(&cam->lock);
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ cam->brightness = ctrl->val;
+ break;
+ case V4L2_CID_CONTRAST:
+ cam->contrast = ctrl->val;
+ break;
+ case V4L2_CID_SATURATION:
+ cam->color = ctrl->val;
+ break;
+ case V4L2_CID_HUE:
+ cam->hue = ctrl->val;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ if (ret == 0) {
+ w9966_pdev_claim(cam);
+
+ if (w9966_write_reg_i2c(cam, 0x0a, cam->brightness) == -1 ||
+ w9966_write_reg_i2c(cam, 0x0b, cam->contrast) == -1 ||
+ w9966_write_reg_i2c(cam, 0x0c, cam->color) == -1 ||
+ w9966_write_reg_i2c(cam, 0x0d, cam->hue) == -1) {
+ ret = -EIO;
+ }
+
+ w9966_pdev_release(cam);
+ }
+ mutex_unlock(&cam->lock);
+ return ret;
+}
+
+static int cam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct w9966 *cam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ pix->width = cam->width;
+ pix->height = cam->height;
+ pix->pixelformat = V4L2_PIX_FMT_YUYV;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = 2 * cam->width;
+ pix->sizeimage = 2 * cam->width * cam->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
+ return 0;
+}
+
+static int cam_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+
+ if (pix->width < 2)
+ pix->width = 2;
+ if (pix->height < 1)
+ pix->height = 1;
+ if (pix->width > W9966_WND_MAX_W)
+ pix->width = W9966_WND_MAX_W;
+ if (pix->height > W9966_WND_MAX_H)
+ pix->height = W9966_WND_MAX_H;
+ pix->pixelformat = V4L2_PIX_FMT_YUYV;
+ pix->field = V4L2_FIELD_NONE;
+ pix->bytesperline = 2 * pix->width;
+ pix->sizeimage = 2 * pix->width * pix->height;
+ /* Just a guess */
+ pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
+ return 0;
+}
+
+static int cam_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
+{
+ struct w9966 *cam = video_drvdata(file);
+ struct v4l2_pix_format *pix = &fmt->fmt.pix;
+ int ret = cam_try_fmt_vid_cap(file, fh, fmt);
+
+ if (ret)
+ return ret;
+
+ mutex_lock(&cam->lock);
+ /* Update camera regs */
+ w9966_pdev_claim(cam);
+ ret = w9966_setup(cam, 0, 0, 1023, 1023, pix->width, pix->height);
+ w9966_pdev_release(cam);
+ mutex_unlock(&cam->lock);
+ return ret;
+}
+
+static int cam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
+{
+ static struct v4l2_fmtdesc formats[] = {
+ { 0, 0, 0,
+ "YUV 4:2:2", V4L2_PIX_FMT_YUYV,
+ { 0, 0, 0, 0 }
+ },
+ };
+ enum v4l2_buf_type type = fmt->type;
+
+ if (fmt->index > 0)
+ return -EINVAL;
+
+ *fmt = formats[fmt->index];
+ fmt->type = type;
+ return 0;
+}
+
+/* Capture data */
+static ssize_t w9966_v4l_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct w9966 *cam = video_drvdata(file);
+ unsigned char addr = 0xa0; /* ECP, read, CCD-transfer, 00000 */
+ unsigned char __user *dest = (unsigned char __user *)buf;
+ unsigned long dleft = count;
+ unsigned char *tbuf;
+
+ /* Why would anyone want more than this?? */
+ if (count > cam->width * cam->height * 2)
+ return -EINVAL;
+
+ mutex_lock(&cam->lock);
+ w9966_pdev_claim(cam);
+ w9966_write_reg(cam, 0x00, 0x02); /* Reset ECP-FIFO buffer */
+ w9966_write_reg(cam, 0x00, 0x00); /* Return to normal operation */
+ w9966_write_reg(cam, 0x01, 0x98); /* Enable capture */
+
+ /* write special capture-addr and negotiate into data transfer */
+ if ((parport_negotiate(cam->pport, cam->ppmode|IEEE1284_ADDR) != 0) ||
+ (parport_write(cam->pport, &addr, 1) != 1) ||
+ (parport_negotiate(cam->pport, cam->ppmode|IEEE1284_DATA) != 0)) {
+ w9966_pdev_release(cam);
+ mutex_unlock(&cam->lock);
+ return -EFAULT;
+ }
+
+ tbuf = kmalloc(W9966_RBUFFER, GFP_KERNEL);
+ if (tbuf == NULL) {
+ count = -ENOMEM;
+ goto out;
+ }
+
+ while (dleft > 0) {
+ unsigned long tsize = (dleft > W9966_RBUFFER) ? W9966_RBUFFER : dleft;
+
+ if (parport_read(cam->pport, tbuf, tsize) < tsize) {
+ count = -EFAULT;
+ goto out;
+ }
+ if (copy_to_user(dest, tbuf, tsize) != 0) {
+ count = -EFAULT;
+ goto out;
+ }
+ dest += tsize;
+ dleft -= tsize;
+ }
+
+ w9966_write_reg(cam, 0x01, 0x18); /* Disable capture */
+
+out:
+ kfree(tbuf);
+ w9966_pdev_release(cam);
+ mutex_unlock(&cam->lock);
+
+ return count;
+}
+
+static const struct v4l2_file_operations w9966_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = v4l2_fh_release,
+ .poll = v4l2_ctrl_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .read = w9966_v4l_read,
+};
+
+static const struct v4l2_ioctl_ops w9966_ioctl_ops = {
+ .vidioc_querycap = cam_querycap,
+ .vidioc_g_input = cam_g_input,
+ .vidioc_s_input = cam_s_input,
+ .vidioc_enum_input = cam_enum_input,
+ .vidioc_enum_fmt_vid_cap = cam_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = cam_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = cam_s_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = cam_try_fmt_vid_cap,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static const struct v4l2_ctrl_ops cam_ctrl_ops = {
+ .s_ctrl = cam_s_ctrl,
+};
+
+
+/* Initialize camera device. Setup all internal flags, set a
+ default video mode, setup ccd-chip, register v4l device etc..
+ Also used for 'probing' of hardware.
+ -1 on error */
+static int w9966_init(struct w9966 *cam, struct parport *port)
+{
+ struct v4l2_device *v4l2_dev = &cam->v4l2_dev;
+
+ if (cam->dev_state != 0)
+ return -1;
+
+ strlcpy(v4l2_dev->name, "w9966", sizeof(v4l2_dev->name));
+
+ if (v4l2_device_register(NULL, v4l2_dev) < 0) {
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ return -1;
+ }
+
+ v4l2_ctrl_handler_init(&cam->hdl, 4);
+ v4l2_ctrl_new_std(&cam->hdl, &cam_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
+ v4l2_ctrl_new_std(&cam->hdl, &cam_ctrl_ops,
+ V4L2_CID_CONTRAST, -64, 64, 1, 64);
+ v4l2_ctrl_new_std(&cam->hdl, &cam_ctrl_ops,
+ V4L2_CID_SATURATION, -64, 64, 1, 64);
+ v4l2_ctrl_new_std(&cam->hdl, &cam_ctrl_ops,
+ V4L2_CID_HUE, -128, 127, 1, 0);
+ if (cam->hdl.error) {
+ v4l2_err(v4l2_dev, "couldn't register controls\n");
+ return -1;
+ }
+ cam->pport = port;
+ cam->brightness = 128;
+ cam->contrast = 64;
+ cam->color = 64;
+ cam->hue = 0;
+
+ /* Select requested transfer mode */
+ switch (parmode) {
+ default: /* Auto-detect (priority: hw-ecp, hw-epp, sw-ecp) */
+ case 0:
+ if (port->modes & PARPORT_MODE_ECP)
+ cam->ppmode = IEEE1284_MODE_ECP;
+ else if (port->modes & PARPORT_MODE_EPP)
+ cam->ppmode = IEEE1284_MODE_EPP;
+ else
+ cam->ppmode = IEEE1284_MODE_ECP;
+ break;
+ case 1: /* hw- or sw-ecp */
+ cam->ppmode = IEEE1284_MODE_ECP;
+ break;
+ case 2: /* hw- or sw-epp */
+ cam->ppmode = IEEE1284_MODE_EPP;
+ break;
+ }
+
+ /* Tell the parport driver that we exists */
+ cam->pdev = parport_register_device(port, "w9966", NULL, NULL, NULL, 0, NULL);
+ if (cam->pdev == NULL) {
+ DPRINTF("parport_register_device() failed\n");
+ return -1;
+ }
+ w9966_set_state(cam, W9966_STATE_PDEV, W9966_STATE_PDEV);
+
+ w9966_pdev_claim(cam);
+
+ /* Setup a default capture mode */
+ if (w9966_setup(cam, 0, 0, 1023, 1023, 200, 160) != 0) {
+ DPRINTF("w9966_setup() failed.\n");
+ return -1;
+ }
+
+ w9966_pdev_release(cam);
+
+ /* Fill in the video_device struct and register us to v4l */
+ strlcpy(cam->vdev.name, W9966_DRIVERNAME, sizeof(cam->vdev.name));
+ cam->vdev.v4l2_dev = v4l2_dev;
+ cam->vdev.fops = &w9966_fops;
+ cam->vdev.ioctl_ops = &w9966_ioctl_ops;
+ cam->vdev.release = video_device_release_empty;
+ cam->vdev.ctrl_handler = &cam->hdl;
+ video_set_drvdata(&cam->vdev, cam);
+
+ mutex_init(&cam->lock);
+
+ if (video_register_device(&cam->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
+ return -1;
+
+ w9966_set_state(cam, W9966_STATE_VDEV, W9966_STATE_VDEV);
+
+ /* All ok */
+ v4l2_info(v4l2_dev, "Found and initialized a webcam on %s.\n",
+ cam->pport->name);
+ return 0;
+}
+
+
+/* Terminate everything gracefully */
+static void w9966_term(struct w9966 *cam)
+{
+ /* Unregister from v4l */
+ if (w9966_get_state(cam, W9966_STATE_VDEV, W9966_STATE_VDEV)) {
+ video_unregister_device(&cam->vdev);
+ w9966_set_state(cam, W9966_STATE_VDEV, 0);
+ }
+
+ v4l2_ctrl_handler_free(&cam->hdl);
+
+ /* Terminate from IEEE1284 mode and release pdev block */
+ if (w9966_get_state(cam, W9966_STATE_PDEV, W9966_STATE_PDEV)) {
+ w9966_pdev_claim(cam);
+ parport_negotiate(cam->pport, IEEE1284_MODE_COMPAT);
+ w9966_pdev_release(cam);
+ }
+
+ /* Unregister from parport */
+ if (w9966_get_state(cam, W9966_STATE_PDEV, W9966_STATE_PDEV)) {
+ parport_unregister_device(cam->pdev);
+ w9966_set_state(cam, W9966_STATE_PDEV, 0);
+ }
+ memset(cam, 0, sizeof(*cam));
+}
+
+
+/* Called once for every parport on init */
+static void w9966_attach(struct parport *port)
+{
+ int i;
+
+ for (i = 0; i < W9966_MAXCAMS; i++) {
+ if (w9966_cams[i].dev_state != 0) /* Cam is already assigned */
+ continue;
+ if (strcmp(pardev[i], "aggressive") == 0 || strcmp(pardev[i], port->name) == 0) {
+ if (w9966_init(&w9966_cams[i], port) != 0)
+ w9966_term(&w9966_cams[i]);
+ break; /* return */
+ }
+ }
+}
+
+/* Called once for every parport on termination */
+static void w9966_detach(struct parport *port)
+{
+ int i;
+
+ for (i = 0; i < W9966_MAXCAMS; i++)
+ if (w9966_cams[i].dev_state != 0 && w9966_cams[i].pport == port)
+ w9966_term(&w9966_cams[i]);
+}
+
+
+static struct parport_driver w9966_ppd = {
+ .name = W9966_DRIVERNAME,
+ .attach = w9966_attach,
+ .detach = w9966_detach,
+};
+
+/* Module entry point */
+static int __init w9966_mod_init(void)
+{
+ int i;
+
+ for (i = 0; i < W9966_MAXCAMS; i++)
+ w9966_cams[i].dev_state = 0;
+
+ return parport_register_driver(&w9966_ppd);
+}
+
+/* Module cleanup */
+static void __exit w9966_mod_term(void)
+{
+ parport_unregister_driver(&w9966_ppd);
+}
+
+module_init(w9966_mod_init);
+module_exit(w9966_mod_term);

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