diff options
Diffstat (limited to 'drivers/media/parport')
| -rw-r--r-- | drivers/media/parport/Kconfig | 52 | ||||
| -rw-r--r-- | drivers/media/parport/Makefile | 4 | ||||
| -rw-r--r-- | drivers/media/parport/bw-qcam.c | 1113 | ||||
| -rw-r--r-- | drivers/media/parport/c-qcam.c | 883 | ||||
| -rw-r--r-- | drivers/media/parport/pms.c | 1152 | ||||
| -rw-r--r-- | drivers/media/parport/w9966.c | 981 |
6 files changed, 4185 insertions, 0 deletions
diff --git a/drivers/media/parport/Kconfig b/drivers/media/parport/Kconfig new file mode 100644 index 000000000000..ece13dcff07d --- /dev/null +++ b/drivers/media/parport/Kconfig @@ -0,0 +1,52 @@ +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" + depends on PARPORT && VIDEO_V4L2 + help + Say Y have if you the black and white version of the QuickCam + camera. See the next option for the color version. + + 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" + 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. + +config VIDEO_PMS + tristate "Mediavision Pro Movie Studio Video For Linux" + depends on ISA && VIDEO_V4L2 + help + Say Y if you have the ISA Mediavision Pro Movie Studio + capture card. + + 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" + 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. +endif diff --git a/drivers/media/parport/Makefile b/drivers/media/parport/Makefile new file mode 100644 index 000000000000..4eea06d7af5b --- /dev/null +++ b/drivers/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/media/parport/bw-qcam.c b/drivers/media/parport/bw-qcam.c new file mode 100644 index 000000000000..5b75a64b199b --- /dev/null +++ b/drivers/media/parport/bw-qcam.c @@ -0,0 +1,1113 @@ +/* + * 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> + +/* 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 pardevice *pdev; + struct parport *pport; + struct mutex 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; + + qc_reset(q); + + /* 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, char __user *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++; + put_user(ch << shift, buf + o); + } + } + 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; +} + +/* + * 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; + 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; + 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; + + mutex_lock(&qcam->lock); + qc_setscanmode(qcam); + /* We must update the camera before we grab. We could + just have changed the grab size */ + qcam->status |= QC_PARAM_CHANGE; + 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, + "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 ssize_t qcam_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct qcam *qcam = video_drvdata(file); + int len; + parport_claim_or_block(qcam->pdev); + + mutex_lock(&qcam->lock); + + qc_reset(qcam); + + /* Update the camera parameters if we need to */ + if (qcam->status & QC_PARAM_CHANGE) + qc_set(qcam); + + len = qc_capture(qcam, buf, count); + + mutex_unlock(&qcam->lock); + + parport_release(qcam->pdev); + return len; +} + +static unsigned int qcam_poll(struct file *filp, poll_table *wait) +{ + return v4l2_ctrl_poll(filp, wait) | POLLIN | POLLRDNORM; +} + +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) { + qc_setscanmode(qcam); + qcam->status |= QC_PARAM_CHANGE; + } + 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 = qcam_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_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_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; + + 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%d", 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"); + v4l2_ctrl_handler_free(&qcam->hdl); + kfree(qcam); + return NULL; + } + 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); + v4l2_ctrl_handler_free(&qcam->hdl); + kfree(qcam); + return NULL; + } + + 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.ioctl_ops = &qcam_ioctl_ops; + set_bit(V4L2_FL_USE_FH_PRIO, &qcam->vdev.flags); + qcam->vdev.release = video_device_release_empty; + video_set_drvdata(&qcam->vdev, qcam); + + mutex_init(&qcam->lock); + + 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; +} + +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/media/parport/c-qcam.c b/drivers/media/parport/c-qcam.c new file mode 100644 index 000000000000..ec51e1f12e82 --- /dev/null +++ b/drivers/media/parport/c-qcam.c @@ -0,0 +1,883 @@ +/* + * 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; + set_bit(V4L2_FL_USE_FH_PRIO, &qcam->vdev.flags); + 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/media/parport/pms.c b/drivers/media/parport/pms.c new file mode 100644 index 000000000000..77f9c92186f4 --- /dev/null +++ b/drivers/media/parport/pms.c @@ -0,0 +1,1152 @@ +/* + * 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[dw + 32]; /* using a temp buffer is faster than direct */ + int cnt = 0; + int len = 0; + unsigned char r8 = 0x5; /* value for reg8 */ + + 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; + } + } + 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; + set_bit(V4L2_FL_USE_FH_PRIO, &dev->vdev.flags); + 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/media/parport/w9966.c b/drivers/media/parport/w9966.c new file mode 100644 index 000000000000..db2a6003a1c3 --- /dev/null +++ b/drivers/media/parport/w9966.c @@ -0,0 +1,981 @@ +/* + 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; + set_bit(V4L2_FL_USE_FH_PRIO, &cam->vdev.flags); + 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); |