diff options
Diffstat (limited to 'drivers/staging/media/parport/pms.c')
| -rw-r--r-- | drivers/staging/media/parport/pms.c | 1156 |
1 files changed, 1156 insertions, 0 deletions
diff --git a/drivers/staging/media/parport/pms.c b/drivers/staging/media/parport/pms.c new file mode 100644 index 000000000000..e6b497528cea --- /dev/null +++ b/drivers/staging/media/parport/pms.c @@ -0,0 +1,1156 @@ +/* + * Media Vision Pro Movie Studio + * or + * "all you need is an I2C bus some RAM and a prayer" + * + * This draws heavily on code + * + * (c) Wolfgang Koehler, wolf@first.gmd.de, Dec. 1994 + * Kiefernring 15 + * 14478 Potsdam, Germany + * + * Most of this code is directly derived from his userspace driver. + * His driver works so send any reports to alan@lxorguk.ukuu.org.uk + * unless the userspace driver also doesn't work for you... + * + * Changes: + * 25-11-2009 Hans Verkuil <hverkuil@xs4all.nl> + * - converted to version 2 of the V4L API. + * 08/07/2003 Daniele Bellucci <bellucda@tiscali.it> + * - pms_capture: report back -EFAULT + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/fs.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/ioport.h> +#include <linux/init.h> +#include <linux/mutex.h> +#include <linux/uaccess.h> +#include <linux/isa.h> +#include <asm/io.h> + +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> +#include <media/v4l2-device.h> + +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.0.5"); + +#define MOTOROLA 1 +#define PHILIPS2 2 /* SAA7191 */ +#define PHILIPS1 3 +#define MVVMEMORYWIDTH 0x40 /* 512 bytes */ + +struct i2c_info { + u8 slave; + u8 sub; + u8 data; + u8 hits; +}; + +struct pms { + struct v4l2_device v4l2_dev; + struct video_device vdev; + struct v4l2_ctrl_handler hdl; + int height; + int width; + int depth; + int input; + struct mutex lock; + int i2c_count; + struct i2c_info i2cinfo[64]; + + int decoder; + int standard; /* 0 - auto 1 - ntsc 2 - pal 3 - secam */ + v4l2_std_id std; + int io; + int data; + void __iomem *mem; +}; + +/* + * I/O ports and Shared Memory + */ + +static int io_port = 0x250; +module_param(io_port, int, 0); + +static int mem_base = 0xc8000; +module_param(mem_base, int, 0); + +static int video_nr = -1; +module_param(video_nr, int, 0); + + +static inline void mvv_write(struct pms *dev, u8 index, u8 value) +{ + outw(index | (value << 8), dev->io); +} + +static inline u8 mvv_read(struct pms *dev, u8 index) +{ + outb(index, dev->io); + return inb(dev->data); +} + +static int pms_i2c_stat(struct pms *dev, u8 slave) +{ + int counter = 0; + int i; + + outb(0x28, dev->io); + + while ((inb(dev->data) & 0x01) == 0) + if (counter++ == 256) + break; + + while ((inb(dev->data) & 0x01) != 0) + if (counter++ == 256) + break; + + outb(slave, dev->io); + + counter = 0; + while ((inb(dev->data) & 0x01) == 0) + if (counter++ == 256) + break; + + while ((inb(dev->data) & 0x01) != 0) + if (counter++ == 256) + break; + + for (i = 0; i < 12; i++) { + char st = inb(dev->data); + + if ((st & 2) != 0) + return -1; + if ((st & 1) == 0) + break; + } + outb(0x29, dev->io); + return inb(dev->data); +} + +static int pms_i2c_write(struct pms *dev, u16 slave, u16 sub, u16 data) +{ + int skip = 0; + int count; + int i; + + for (i = 0; i < dev->i2c_count; i++) { + if ((dev->i2cinfo[i].slave == slave) && + (dev->i2cinfo[i].sub == sub)) { + if (dev->i2cinfo[i].data == data) + skip = 1; + dev->i2cinfo[i].data = data; + i = dev->i2c_count + 1; + } + } + + if (i == dev->i2c_count && dev->i2c_count < 64) { + dev->i2cinfo[dev->i2c_count].slave = slave; + dev->i2cinfo[dev->i2c_count].sub = sub; + dev->i2cinfo[dev->i2c_count].data = data; + dev->i2c_count++; + } + + if (skip) + return 0; + + mvv_write(dev, 0x29, sub); + mvv_write(dev, 0x2A, data); + mvv_write(dev, 0x28, slave); + + outb(0x28, dev->io); + + count = 0; + while ((inb(dev->data) & 1) == 0) + if (count > 255) + break; + while ((inb(dev->data) & 1) != 0) + if (count > 255) + break; + + count = inb(dev->data); + + if (count & 2) + return -1; + return count; +} + +static int pms_i2c_read(struct pms *dev, int slave, int sub) +{ + int i; + + for (i = 0; i < dev->i2c_count; i++) { + if (dev->i2cinfo[i].slave == slave && dev->i2cinfo[i].sub == sub) + return dev->i2cinfo[i].data; + } + return 0; +} + + +static void pms_i2c_andor(struct pms *dev, int slave, int sub, int and, int or) +{ + u8 tmp; + + tmp = pms_i2c_read(dev, slave, sub); + tmp = (tmp & and) | or; + pms_i2c_write(dev, slave, sub, tmp); +} + +/* + * Control functions + */ + + +static void pms_videosource(struct pms *dev, short source) +{ + switch (dev->decoder) { + case MOTOROLA: + break; + case PHILIPS2: + pms_i2c_andor(dev, 0x8a, 0x06, 0x7f, source ? 0x80 : 0); + break; + case PHILIPS1: + break; + } + mvv_write(dev, 0x2E, 0x31); + /* Was: mvv_write(dev, 0x2E, source ? 0x31 : 0x30); + But could not make this work correctly. Only Composite input + worked for me. */ +} + +static void pms_hue(struct pms *dev, short hue) +{ + switch (dev->decoder) { + case MOTOROLA: + pms_i2c_write(dev, 0x8a, 0x00, hue); + break; + case PHILIPS2: + pms_i2c_write(dev, 0x8a, 0x07, hue); + break; + case PHILIPS1: + pms_i2c_write(dev, 0x42, 0x07, hue); + break; + } +} + +static void pms_saturation(struct pms *dev, short sat) +{ + switch (dev->decoder) { + case MOTOROLA: + pms_i2c_write(dev, 0x8a, 0x00, sat); + break; + case PHILIPS1: + pms_i2c_write(dev, 0x42, 0x12, sat); + break; + } +} + + +static void pms_contrast(struct pms *dev, short contrast) +{ + switch (dev->decoder) { + case MOTOROLA: + pms_i2c_write(dev, 0x8a, 0x00, contrast); + break; + case PHILIPS1: + pms_i2c_write(dev, 0x42, 0x13, contrast); + break; + } +} + +static void pms_brightness(struct pms *dev, short brightness) +{ + switch (dev->decoder) { + case MOTOROLA: + pms_i2c_write(dev, 0x8a, 0x00, brightness); + pms_i2c_write(dev, 0x8a, 0x00, brightness); + pms_i2c_write(dev, 0x8a, 0x00, brightness); + break; + case PHILIPS1: + pms_i2c_write(dev, 0x42, 0x19, brightness); + break; + } +} + + +static void pms_format(struct pms *dev, short format) +{ + int target; + + dev->standard = format; + + if (dev->decoder == PHILIPS1) + target = 0x42; + else if (dev->decoder == PHILIPS2) + target = 0x8a; + else + return; + + switch (format) { + case 0: /* Auto */ + pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00); + pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x80); + break; + case 1: /* NTSC */ + pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00); + pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x40); + break; + case 2: /* PAL */ + pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00); + pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x00); + break; + case 3: /* SECAM */ + pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x01); + pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x00); + break; + } +} + +#ifdef FOR_FUTURE_EXPANSION + +/* + * These features of the PMS card are not currently exposes. They + * could become a private v4l ioctl for PMSCONFIG or somesuch if + * people need it. We also don't yet use the PMS interrupt. + */ + +static void pms_hstart(struct pms *dev, short start) +{ + switch (dev->decoder) { + case PHILIPS1: + pms_i2c_write(dev, 0x8a, 0x05, start); + pms_i2c_write(dev, 0x8a, 0x18, start); + break; + case PHILIPS2: + pms_i2c_write(dev, 0x42, 0x05, start); + pms_i2c_write(dev, 0x42, 0x18, start); + break; + } +} + +/* + * Bandpass filters + */ + +static void pms_bandpass(struct pms *dev, short pass) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x06, 0xcf, (pass & 0x03) << 4); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x06, 0xcf, (pass & 0x03) << 4); +} + +static void pms_antisnow(struct pms *dev, short snow) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x06, 0xf3, (snow & 0x03) << 2); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x06, 0xf3, (snow & 0x03) << 2); +} + +static void pms_sharpness(struct pms *dev, short sharp) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x06, 0xfc, sharp & 0x03); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x06, 0xfc, sharp & 0x03); +} + +static void pms_chromaagc(struct pms *dev, short agc) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x0c, 0x9f, (agc & 0x03) << 5); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x0c, 0x9f, (agc & 0x03) << 5); +} + +static void pms_vertnoise(struct pms *dev, short noise) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x10, 0xfc, noise & 3); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x10, 0xfc, noise & 3); +} + +static void pms_forcecolour(struct pms *dev, short colour) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x0c, 0x7f, (colour & 1) << 7); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x0c, 0x7, (colour & 1) << 7); +} + +static void pms_antigamma(struct pms *dev, short gamma) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0xb8, 0x00, 0x7f, (gamma & 1) << 7); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x20, 0x7, (gamma & 1) << 7); +} + +static void pms_prefilter(struct pms *dev, short filter) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x06, 0xbf, (filter & 1) << 6); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x06, 0xbf, (filter & 1) << 6); +} + +static void pms_hfilter(struct pms *dev, short filter) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0xb8, 0x04, 0x1f, (filter & 7) << 5); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x24, 0x1f, (filter & 7) << 5); +} + +static void pms_vfilter(struct pms *dev, short filter) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0xb8, 0x08, 0x9f, (filter & 3) << 5); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x28, 0x9f, (filter & 3) << 5); +} + +static void pms_killcolour(struct pms *dev, short colour) +{ + if (dev->decoder == PHILIPS2) { + pms_i2c_andor(dev, 0x8a, 0x08, 0x07, (colour & 0x1f) << 3); + pms_i2c_andor(dev, 0x8a, 0x09, 0x07, (colour & 0x1f) << 3); + } else if (dev->decoder == PHILIPS1) { + pms_i2c_andor(dev, 0x42, 0x08, 0x07, (colour & 0x1f) << 3); + pms_i2c_andor(dev, 0x42, 0x09, 0x07, (colour & 0x1f) << 3); + } +} + +static void pms_chromagain(struct pms *dev, short chroma) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_write(dev, 0x8a, 0x11, chroma); + else if (dev->decoder == PHILIPS1) + pms_i2c_write(dev, 0x42, 0x11, chroma); +} + + +static void pms_spacialcompl(struct pms *dev, short data) +{ + mvv_write(dev, 0x3b, data); +} + +static void pms_spacialcomph(struct pms *dev, short data) +{ + mvv_write(dev, 0x3a, data); +} + +static void pms_vstart(struct pms *dev, short start) +{ + mvv_write(dev, 0x16, start); + mvv_write(dev, 0x17, (start >> 8) & 0x01); +} + +#endif + +static void pms_secamcross(struct pms *dev, short cross) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x0f, 0xdf, (cross & 1) << 5); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x0f, 0xdf, (cross & 1) << 5); +} + + +static void pms_swsense(struct pms *dev, short sense) +{ + if (dev->decoder == PHILIPS2) { + pms_i2c_write(dev, 0x8a, 0x0a, sense); + pms_i2c_write(dev, 0x8a, 0x0b, sense); + } else if (dev->decoder == PHILIPS1) { + pms_i2c_write(dev, 0x42, 0x0a, sense); + pms_i2c_write(dev, 0x42, 0x0b, sense); + } +} + + +static void pms_framerate(struct pms *dev, short frr) +{ + int fps = (dev->std & V4L2_STD_525_60) ? 30 : 25; + + if (frr == 0) + return; + fps = fps/frr; + mvv_write(dev, 0x14, 0x80 | fps); + mvv_write(dev, 0x15, 1); +} + +static void pms_vert(struct pms *dev, u8 deciden, u8 decinum) +{ + mvv_write(dev, 0x1c, deciden); /* Denominator */ + mvv_write(dev, 0x1d, decinum); /* Numerator */ +} + +/* + * Turn 16bit ratios into best small ratio the chipset can grok + */ + +static void pms_vertdeci(struct pms *dev, unsigned short decinum, unsigned short deciden) +{ + /* Knock it down by / 5 once */ + if (decinum % 5 == 0) { + deciden /= 5; + decinum /= 5; + } + /* + * 3's + */ + while (decinum % 3 == 0 && deciden % 3 == 0) { + deciden /= 3; + decinum /= 3; + } + /* + * 2's + */ + while (decinum % 2 == 0 && deciden % 2 == 0) { + decinum /= 2; + deciden /= 2; + } + /* + * Fudgyify + */ + while (deciden > 32) { + deciden /= 2; + decinum = (decinum + 1) / 2; + } + if (deciden == 32) + deciden--; + pms_vert(dev, deciden, decinum); +} + +static void pms_horzdeci(struct pms *dev, short decinum, short deciden) +{ + if (decinum <= 512) { + if (decinum % 5 == 0) { + decinum /= 5; + deciden /= 5; + } + } else { + decinum = 512; + deciden = 640; /* 768 would be ideal */ + } + + while (((decinum | deciden) & 1) == 0) { + decinum >>= 1; + deciden >>= 1; + } + while (deciden > 32) { + deciden >>= 1; + decinum = (decinum + 1) >> 1; + } + if (deciden == 32) + deciden--; + + mvv_write(dev, 0x24, 0x80 | deciden); + mvv_write(dev, 0x25, decinum); +} + +static void pms_resolution(struct pms *dev, short width, short height) +{ + int fg_height; + + fg_height = height; + if (fg_height > 280) + fg_height = 280; + + mvv_write(dev, 0x18, fg_height); + mvv_write(dev, 0x19, fg_height >> 8); + + if (dev->std & V4L2_STD_525_60) { + mvv_write(dev, 0x1a, 0xfc); + mvv_write(dev, 0x1b, 0x00); + if (height > fg_height) + pms_vertdeci(dev, 240, 240); + else + pms_vertdeci(dev, fg_height, 240); + } else { + mvv_write(dev, 0x1a, 0x1a); + mvv_write(dev, 0x1b, 0x01); + if (fg_height > 256) + pms_vertdeci(dev, 270, 270); + else + pms_vertdeci(dev, fg_height, 270); + } + mvv_write(dev, 0x12, 0); + mvv_write(dev, 0x13, MVVMEMORYWIDTH); + mvv_write(dev, 0x42, 0x00); + mvv_write(dev, 0x43, 0x00); + mvv_write(dev, 0x44, MVVMEMORYWIDTH); + + mvv_write(dev, 0x22, width + 8); + mvv_write(dev, 0x23, (width + 8) >> 8); + + if (dev->std & V4L2_STD_525_60) + pms_horzdeci(dev, width, 640); + else + pms_horzdeci(dev, width + 8, 768); + + mvv_write(dev, 0x30, mvv_read(dev, 0x30) & 0xfe); + mvv_write(dev, 0x08, mvv_read(dev, 0x08) | 0x01); + mvv_write(dev, 0x01, mvv_read(dev, 0x01) & 0xfd); + mvv_write(dev, 0x32, 0x00); + mvv_write(dev, 0x33, MVVMEMORYWIDTH); +} + + +/* + * Set Input + */ + +static void pms_vcrinput(struct pms *dev, short input) +{ + if (dev->decoder == PHILIPS2) + pms_i2c_andor(dev, 0x8a, 0x0d, 0x7f, (input & 1) << 7); + else if (dev->decoder == PHILIPS1) + pms_i2c_andor(dev, 0x42, 0x0d, 0x7f, (input & 1) << 7); +} + + +static int pms_capture(struct pms *dev, char __user *buf, int rgb555, int count) +{ + int y; + int dw = 2 * dev->width; + char *tmp; /* using a temp buffer is faster than direct */ + int cnt = 0; + int len = 0; + unsigned char r8 = 0x5; /* value for reg8 */ + + tmp = kmalloc(dw + 32, GFP_KERNEL); + if (!tmp) + return 0; + + if (rgb555) + r8 |= 0x20; /* else use untranslated rgb = 565 */ + mvv_write(dev, 0x08, r8); /* capture rgb555/565, init DRAM, PC enable */ + +/* printf("%d %d %d %d %d %x %x\n",width,height,voff,nom,den,mvv_buf); */ + + for (y = 0; y < dev->height; y++) { + writeb(0, dev->mem); /* synchronisiert neue Zeile */ + + /* + * This is in truth a fifo, be very careful as if you + * forgot this odd things will occur 8) + */ + + memcpy_fromio(tmp, dev->mem, dw + 32); /* discard 16 word */ + cnt -= dev->height; + while (cnt <= 0) { + /* + * Don't copy too far + */ + int dt = dw; + if (dt + len > count) + dt = count - len; + cnt += dev->height; + if (copy_to_user(buf, tmp + 32, dt)) + return len ? len : -EFAULT; + buf += dt; + len += dt; + } + } + kfree(tmp); + return len; +} + + +/* + * Video4linux interfacing + */ + +static int pms_querycap(struct file *file, void *priv, + struct v4l2_capability *vcap) +{ + struct pms *dev = video_drvdata(file); + + strlcpy(vcap->driver, dev->v4l2_dev.name, sizeof(vcap->driver)); + strlcpy(vcap->card, "Mediavision PMS", sizeof(vcap->card)); + snprintf(vcap->bus_info, sizeof(vcap->bus_info), + "ISA:%s", dev->v4l2_dev.name); + vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE; + vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int pms_enum_input(struct file *file, void *fh, struct v4l2_input *vin) +{ + static const char *inputs[4] = { + "Composite", + "S-Video", + "Composite (VCR)", + "S-Video (VCR)" + }; + + if (vin->index > 3) + return -EINVAL; + strlcpy(vin->name, inputs[vin->index], sizeof(vin->name)); + vin->type = V4L2_INPUT_TYPE_CAMERA; + vin->audioset = 0; + vin->tuner = 0; + vin->std = V4L2_STD_ALL; + vin->status = 0; + return 0; +} + +static int pms_g_input(struct file *file, void *fh, unsigned int *inp) +{ + struct pms *dev = video_drvdata(file); + + *inp = dev->input; + return 0; +} + +static int pms_s_input(struct file *file, void *fh, unsigned int inp) +{ + struct pms *dev = video_drvdata(file); + + if (inp > 3) + return -EINVAL; + + dev->input = inp; + pms_videosource(dev, inp & 1); + pms_vcrinput(dev, inp >> 1); + return 0; +} + +static int pms_g_std(struct file *file, void *fh, v4l2_std_id *std) +{ + struct pms *dev = video_drvdata(file); + + *std = dev->std; + return 0; +} + +static int pms_s_std(struct file *file, void *fh, v4l2_std_id std) +{ + struct pms *dev = video_drvdata(file); + int ret = 0; + + dev->std = std; + if (dev->std & V4L2_STD_NTSC) { + pms_framerate(dev, 30); + pms_secamcross(dev, 0); + pms_format(dev, 1); + } else if (dev->std & V4L2_STD_PAL) { + pms_framerate(dev, 25); + pms_secamcross(dev, 0); + pms_format(dev, 2); + } else if (dev->std & V4L2_STD_SECAM) { + pms_framerate(dev, 25); + pms_secamcross(dev, 1); + pms_format(dev, 2); + } else { + ret = -EINVAL; + } + /* + switch (v->mode) { + case VIDEO_MODE_AUTO: + pms_framerate(dev, 25); + pms_secamcross(dev, 0); + pms_format(dev, 0); + break; + }*/ + return ret; +} + +static int pms_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct pms *dev = container_of(ctrl->handler, struct pms, hdl); + int ret = 0; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + pms_brightness(dev, ctrl->val); + break; + case V4L2_CID_CONTRAST: + pms_contrast(dev, ctrl->val); + break; + case V4L2_CID_SATURATION: + pms_saturation(dev, ctrl->val); + break; + case V4L2_CID_HUE: + pms_hue(dev, ctrl->val); + break; + default: + ret = -EINVAL; + break; + } + return ret; +} + +static int pms_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct pms *dev = video_drvdata(file); + struct v4l2_pix_format *pix = &fmt->fmt.pix; + + pix->width = dev->width; + pix->height = dev->height; + pix->pixelformat = dev->width == 15 ? + V4L2_PIX_FMT_RGB555 : V4L2_PIX_FMT_RGB565; + pix->field = V4L2_FIELD_NONE; + pix->bytesperline = 2 * dev->width; + pix->sizeimage = 2 * dev->width * dev->height; + /* Just a guess */ + pix->colorspace = V4L2_COLORSPACE_SRGB; + return 0; +} + +static int pms_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct v4l2_pix_format *pix = &fmt->fmt.pix; + + if (pix->height < 16 || pix->height > 480) + return -EINVAL; + if (pix->width < 16 || pix->width > 640) + return -EINVAL; + if (pix->pixelformat != V4L2_PIX_FMT_RGB555 && + pix->pixelformat != V4L2_PIX_FMT_RGB565) + return -EINVAL; + pix->field = V4L2_FIELD_NONE; + pix->bytesperline = 2 * pix->width; + pix->sizeimage = 2 * pix->width * pix->height; + /* Just a guess */ + pix->colorspace = V4L2_COLORSPACE_SRGB; + return 0; +} + +static int pms_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) +{ + struct pms *dev = video_drvdata(file); + struct v4l2_pix_format *pix = &fmt->fmt.pix; + int ret = pms_try_fmt_vid_cap(file, fh, fmt); + + if (ret) + return ret; + dev->width = pix->width; + dev->height = pix->height; + dev->depth = (pix->pixelformat == V4L2_PIX_FMT_RGB555) ? 15 : 16; + pms_resolution(dev, dev->width, dev->height); + /* Ok we figured out what to use from our wide choice */ + return 0; +} + +static int pms_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt) +{ + static struct v4l2_fmtdesc formats[] = { + { 0, 0, 0, + "RGB 5:5:5", V4L2_PIX_FMT_RGB555, + { 0, 0, 0, 0 } + }, + { 1, 0, 0, + "RGB 5:6:5", V4L2_PIX_FMT_RGB565, + { 0, 0, 0, 0 } + }, + }; + enum v4l2_buf_type type = fmt->type; + + if (fmt->index > 1) + return -EINVAL; + + *fmt = formats[fmt->index]; + fmt->type = type; + return 0; +} + +static ssize_t pms_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct pms *dev = video_drvdata(file); + int len; + + len = pms_capture(dev, buf, (dev->depth == 15), count); + return len; +} + +static unsigned int pms_poll(struct file *file, struct poll_table_struct *wait) +{ + struct v4l2_fh *fh = file->private_data; + unsigned int res = POLLIN | POLLRDNORM; + + if (v4l2_event_pending(fh)) + res |= POLLPRI; + poll_wait(file, &fh->wait, wait); + return res; +} + +static const struct v4l2_file_operations pms_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = v4l2_fh_release, + .poll = pms_poll, + .unlocked_ioctl = video_ioctl2, + .read = pms_read, +}; + +static const struct v4l2_ioctl_ops pms_ioctl_ops = { + .vidioc_querycap = pms_querycap, + .vidioc_g_input = pms_g_input, + .vidioc_s_input = pms_s_input, + .vidioc_enum_input = pms_enum_input, + .vidioc_g_std = pms_g_std, + .vidioc_s_std = pms_s_std, + .vidioc_enum_fmt_vid_cap = pms_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = pms_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = pms_s_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = pms_try_fmt_vid_cap, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* + * Probe for and initialise the Mediavision PMS + */ + +static int init_mediavision(struct pms *dev) +{ + int idec, decst; + int i; + static const unsigned char i2c_defs[] = { + 0x4c, 0x30, 0x00, 0xe8, + 0xb6, 0xe2, 0x00, 0x00, + 0xff, 0xff, 0x00, 0x00, + 0x00, 0x00, 0x78, 0x98, + 0x00, 0x00, 0x00, 0x00, + 0x34, 0x0a, 0xf4, 0xce, + 0xe4 + }; + + dev->mem = ioremap(mem_base, 0x800); + if (!dev->mem) + return -ENOMEM; + + if (!request_region(0x9a01, 1, "Mediavision PMS config")) { + printk(KERN_WARNING "mediavision: unable to detect: 0x9a01 in use.\n"); + iounmap(dev->mem); + return -EBUSY; + } + if (!request_region(dev->io, 3, "Mediavision PMS")) { + printk(KERN_WARNING "mediavision: I/O port %d in use.\n", dev->io); + release_region(0x9a01, 1); + iounmap(dev->mem); + return -EBUSY; + } + outb(0xb8, 0x9a01); /* Unlock */ + outb(dev->io >> 4, 0x9a01); /* Set IO port */ + + + decst = pms_i2c_stat(dev, 0x43); + + if (decst != -1) + idec = 2; + else if (pms_i2c_stat(dev, 0xb9) != -1) + idec = 3; + else if (pms_i2c_stat(dev, 0x8b) != -1) + idec = 1; + else + idec = 0; + + printk(KERN_INFO "PMS type is %d\n", idec); + if (idec == 0) { + release_region(dev->io, 3); + release_region(0x9a01, 1); + iounmap(dev->mem); + return -ENODEV; + } + + /* + * Ok we have a PMS of some sort + */ + + mvv_write(dev, 0x04, mem_base >> 12); /* Set the memory area */ + + /* Ok now load the defaults */ + + for (i = 0; i < 0x19; i++) { + if (i2c_defs[i] == 0xff) + pms_i2c_andor(dev, 0x8a, i, 0x07, 0x00); + else + pms_i2c_write(dev, 0x8a, i, i2c_defs[i]); + } + + pms_i2c_write(dev, 0xb8, 0x00, 0x12); + pms_i2c_write(dev, 0xb8, 0x04, 0x00); + pms_i2c_write(dev, 0xb8, 0x07, 0x00); + pms_i2c_write(dev, 0xb8, 0x08, 0x00); + pms_i2c_write(dev, 0xb8, 0x09, 0xff); + pms_i2c_write(dev, 0xb8, 0x0a, 0x00); + pms_i2c_write(dev, 0xb8, 0x0b, 0x10); + pms_i2c_write(dev, 0xb8, 0x10, 0x03); + + mvv_write(dev, 0x01, 0x00); + mvv_write(dev, 0x05, 0xa0); + mvv_write(dev, 0x08, 0x25); + mvv_write(dev, 0x09, 0x00); + mvv_write(dev, 0x0a, 0x20 | MVVMEMORYWIDTH); + + mvv_write(dev, 0x10, 0x02); + mvv_write(dev, 0x1e, 0x0c); + mvv_write(dev, 0x1f, 0x03); + mvv_write(dev, 0x26, 0x06); + + mvv_write(dev, 0x2b, 0x00); + mvv_write(dev, 0x2c, 0x20); + mvv_write(dev, 0x2d, 0x00); + mvv_write(dev, 0x2f, 0x70); + mvv_write(dev, 0x32, 0x00); + mvv_write(dev, 0x33, MVVMEMORYWIDTH); + mvv_write(dev, 0x34, 0x00); + mvv_write(dev, 0x35, 0x00); + mvv_write(dev, 0x3a, 0x80); + mvv_write(dev, 0x3b, 0x10); + mvv_write(dev, 0x20, 0x00); + mvv_write(dev, 0x21, 0x00); + mvv_write(dev, 0x30, 0x22); + return 0; +} + +/* + * Initialization and module stuff + */ + +#ifndef MODULE +static int enable; +module_param(enable, int, 0); +#endif + +static const struct v4l2_ctrl_ops pms_ctrl_ops = { + .s_ctrl = pms_s_ctrl, +}; + +static int pms_probe(struct device *pdev, unsigned int card) +{ + struct pms *dev; + struct v4l2_device *v4l2_dev; + struct v4l2_ctrl_handler *hdl; + int res; + +#ifndef MODULE + if (!enable) { + pr_err("PMS: not enabled, use pms.enable=1 to probe\n"); + return -ENODEV; + } +#endif + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (dev == NULL) + return -ENOMEM; + + dev->decoder = PHILIPS2; + dev->io = io_port; + dev->data = io_port + 1; + v4l2_dev = &dev->v4l2_dev; + hdl = &dev->hdl; + + res = v4l2_device_register(pdev, v4l2_dev); + if (res < 0) { + v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); + goto free_dev; + } + v4l2_info(v4l2_dev, "Mediavision Pro Movie Studio driver 0.05\n"); + + res = init_mediavision(dev); + if (res) { + v4l2_err(v4l2_dev, "Board not found.\n"); + goto free_io; + } + + v4l2_ctrl_handler_init(hdl, 4); + v4l2_ctrl_new_std(hdl, &pms_ctrl_ops, + V4L2_CID_BRIGHTNESS, 0, 255, 1, 139); + v4l2_ctrl_new_std(hdl, &pms_ctrl_ops, + V4L2_CID_CONTRAST, 0, 255, 1, 70); + v4l2_ctrl_new_std(hdl, &pms_ctrl_ops, + V4L2_CID_SATURATION, 0, 255, 1, 64); + v4l2_ctrl_new_std(hdl, &pms_ctrl_ops, + V4L2_CID_HUE, 0, 255, 1, 0); + if (hdl->error) { + res = hdl->error; + goto free_hdl; + } + + mutex_init(&dev->lock); + strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); + dev->vdev.v4l2_dev = v4l2_dev; + dev->vdev.ctrl_handler = hdl; + dev->vdev.fops = &pms_fops; + dev->vdev.ioctl_ops = &pms_ioctl_ops; + dev->vdev.release = video_device_release_empty; + dev->vdev.lock = &dev->lock; + dev->vdev.tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM; + video_set_drvdata(&dev->vdev, dev); + dev->std = V4L2_STD_NTSC_M; + dev->height = 240; + dev->width = 320; + dev->depth = 16; + pms_swsense(dev, 75); + pms_resolution(dev, 320, 240); + pms_videosource(dev, 0); + pms_vcrinput(dev, 0); + v4l2_ctrl_handler_setup(hdl); + res = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, video_nr); + if (res >= 0) + return 0; + +free_hdl: + v4l2_ctrl_handler_free(hdl); + v4l2_device_unregister(&dev->v4l2_dev); +free_io: + release_region(dev->io, 3); + release_region(0x9a01, 1); + iounmap(dev->mem); +free_dev: + kfree(dev); + return res; +} + +static int pms_remove(struct device *pdev, unsigned int card) +{ + struct pms *dev = dev_get_drvdata(pdev); + + video_unregister_device(&dev->vdev); + v4l2_ctrl_handler_free(&dev->hdl); + release_region(dev->io, 3); + release_region(0x9a01, 1); + iounmap(dev->mem); + return 0; +} + +static struct isa_driver pms_driver = { + .probe = pms_probe, + .remove = pms_remove, + .driver = { + .name = "pms", + }, +}; + +static int __init pms_init(void) +{ + return isa_register_driver(&pms_driver, 1); +} + +static void __exit pms_exit(void) +{ + isa_unregister_driver(&pms_driver); +} + +module_init(pms_init); +module_exit(pms_exit); |