patch-2.3.10 linux/drivers/char/buz.c
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- Lines: 3479
- Date:
Tue Jul 6 10:11:40 1999
- Orig file:
v2.3.9/linux/drivers/char/buz.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.9/linux/drivers/char/buz.c linux/drivers/char/buz.c
@@ -0,0 +1,3478 @@
+#define MAX_KMALLOC_MEM (512*1024)
+/*
+ buz - Iomega Buz driver version 1.0
+
+ Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
+
+ based on
+
+ buz.0.0.3 Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+
+ and
+
+ bttv - Bt848 frame grabber driver
+
+ Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
+ & Marcus Metzler (mocm@thp.uni-koeln.de)
+
+ 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.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/malloc.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <linux/sched.h>
+#include <asm/segment.h>
+#include <linux/types.h>
+#include <linux/wrapper.h>
+#include <asm/spinlock.h>
+
+#include <linux/videodev.h>
+
+#include <linux/version.h>
+#include <asm/uaccess.h>
+
+#include <linux/i2c.h>
+#include "buz.h"
+#include <linux/video_decoder.h>
+#include <linux/video_encoder.h>
+
+#define IRQ_MASK ( ZR36057_ISR_GIRQ0 | /* ZR36057_ISR_GIRQ1 | ZR36057_ISR_CodRepIRQ | */ ZR36057_ISR_JPEGRepIRQ )
+#define GPIO_MASK 0xdf
+
+/*
+
+ BUZ
+
+ GPIO0 = 1, take board out of reset
+ GPIO1 = 1, take JPEG codec out of sleep mode
+ GPIO3 = 1, deassert FRAME# to 36060
+
+
+ GIRQ0 signals a vertical sync of the video signal
+ GIRQ1 signals that ZR36060's DATERR# line is asserted.
+
+ SAA7111A
+
+ In their infinite wisdom, the Iomega engineers decided to
+ use the same input line for composite and S-Video Color,
+ although there are two entries not connected at all!
+ Through this ingenious strike, it is not possible to
+ keep two running video sources connected at the same time
+ to Composite and S-VHS input!
+
+ mode 0 - N/C
+ mode 1 - S-Video Y
+ mode 2 - noise or something I don't know
+ mode 3 - Composite and S-Video C
+ mode 4 - N/C
+ mode 5 - S-Video (gain C independently selectable of gain Y)
+ mode 6 - N/C
+ mode 7 - S-Video (gain C adapted to gain Y)
+ */
+
+#define MAJOR_VERSION 1 /* driver major version */
+#define MINOR_VERSION 0 /* driver minor version */
+
+#define BUZ_NAME "Iomega BUZ V-1.0" /* name of the driver */
+
+#define DEBUG(x) /* Debug driver */
+#define IDEBUG(x) /* Debug interrupt handler */
+#define IOCTL_DEBUG(x)
+
+
+/* The parameters for this driver */
+
+/*
+ The video mem address of the video card.
+ The driver has a little database for some videocards
+ to determine it from there. If your video card is not in there
+ you have either to give it to the driver as a parameter
+ or set in in a VIDIOCSFBUF ioctl
+ */
+
+static unsigned long vidmem = 0; /* Video memory base address */
+
+/* Special purposes only: */
+
+static int triton = 0; /* 0=no, 1=yes */
+static int natoma = 0; /* 0=no, 1=yes */
+
+/*
+ Number and size of grab buffers for Video 4 Linux
+ The vast majority of applications should not need more than 2,
+ the very popular BTTV driver actually does ONLY have 2.
+ Time sensitive applications might need more, the maximum
+ is VIDEO_MAX_FRAME (defined in <linux/videodev.h>).
+
+ The size is set so that the maximum possible request
+ can be satisfied. Decrease it, if bigphys_area alloc'd
+ memory is low. If you don't have the bigphys_area patch,
+ set it to 128 KB. Will you allow only to grab small
+ images with V4L, but that's better than nothing.
+
+ v4l_bufsize has to be given in KB !
+
+ */
+
+static int v4l_nbufs = 2;
+static int v4l_bufsize = 128; /* Everybody should be able to work with this setting */
+
+/*
+ Default input and video norm at startup of the driver.
+ */
+
+static int default_input = 0; /* 0=Composite, 1=S-VHS */
+static int default_norm = 0; /* 0=PAL, 1=NTSC */
+
+MODULE_PARM(vidmem, "i");
+MODULE_PARM(triton, "i");
+MODULE_PARM(natoma, "i");
+MODULE_PARM(v4l_nbufs, "i");
+MODULE_PARM(v4l_bufsize, "i");
+MODULE_PARM(default_input, "i");
+MODULE_PARM(default_norm, "i");
+
+/* Anybody who uses more than four? */
+#define BUZ_MAX 4
+
+static int zoran_num; /* number of Buzs in use */
+static struct zoran zoran[BUZ_MAX];
+
+/* forward references */
+
+static void v4l_fbuffer_free(struct zoran *zr);
+static void jpg_fbuffer_free(struct zoran *zr);
+static void zoran_feed_stat_com(struct zoran *zr);
+
+
+
+/*
+ * Allocate the V4L grab buffers
+ *
+ * These have to be pysically contiguous.
+ * If v4l_bufsize <= MAX_KMALLOC_MEM we use kmalloc
+ */
+
+static int v4l_fbuffer_alloc(struct zoran *zr)
+{
+ int i, off;
+ unsigned char *mem;
+
+ for (i = 0; i < v4l_nbufs; i++) {
+ if (zr->v4l_gbuf[i].fbuffer)
+ printk(KERN_WARNING "%s: v4l_fbuffer_alloc: buffer %d allready allocated ?\n", zr->name, i);
+
+ if (v4l_bufsize <= MAX_KMALLOC_MEM) {
+ /* Use kmalloc */
+
+ mem = (unsigned char *) kmalloc(v4l_bufsize, GFP_KERNEL);
+ if (mem == 0) {
+ printk(KERN_ERR "%s: kmalloc for V4L bufs failed\n", zr->name);
+ v4l_fbuffer_free(zr);
+ return -ENOBUFS;
+ }
+ zr->v4l_gbuf[i].fbuffer = mem;
+ zr->v4l_gbuf[i].fbuffer_phys = virt_to_phys(mem);
+ zr->v4l_gbuf[i].fbuffer_bus = virt_to_bus(mem);
+ for (off = 0; off < v4l_bufsize; off += PAGE_SIZE)
+ mem_map_reserve(MAP_NR(mem + off));
+ DEBUG(printk(BUZ_INFO ": V4L frame %d mem 0x%x (bus: 0x%x=%d)\n", i, mem, virt_to_bus(mem), virt_to_bus(mem)));
+ } else {
+ return -ENOBUFS;
+ }
+ }
+
+ return 0;
+}
+
+/* free the V4L grab buffers */
+static void v4l_fbuffer_free(struct zoran *zr)
+{
+ int i, off;
+ unsigned char *mem;
+
+ for (i = 0; i < v4l_nbufs; i++) {
+ if (!zr->v4l_gbuf[i].fbuffer)
+ continue;
+
+ mem = zr->v4l_gbuf[i].fbuffer;
+ for (off = 0; off < v4l_bufsize; off += PAGE_SIZE)
+ mem_map_unreserve(MAP_NR(mem + off));
+ kfree((void *) zr->v4l_gbuf[i].fbuffer);
+ zr->v4l_gbuf[i].fbuffer = NULL;
+ }
+}
+
+/*
+ * Allocate the MJPEG grab buffers.
+ *
+ * If the requested buffer size is smaller than MAX_KMALLOC_MEM,
+ * kmalloc is used to request a physically contiguous area,
+ * else we allocate the memory in framgents with get_free_page.
+ *
+ * If a Natoma chipset is present and this is a revision 1 zr36057,
+ * each MJPEG buffer needs to be physically contiguous.
+ * (RJ: This statement is from Dave Perks' original driver,
+ * I could never check it because I have a zr36067)
+ * The driver cares about this because it reduces the buffer
+ * size to MAX_KMALLOC_MEM in that case (which forces contiguous allocation).
+ *
+ * RJ: The contents grab buffers needs never be accessed in the driver.
+ * Therefore there is no need to allocate them with vmalloc in order
+ * to get a contiguous virtual memory space.
+ * I don't understand why many other drivers first allocate them with
+ * vmalloc (which uses internally also get_free_page, but delivers you
+ * virtual addresses) and then again have to make a lot of efforts
+ * to get the physical address.
+ *
+ */
+
+static int jpg_fbuffer_alloc(struct zoran *zr)
+{
+ int i, j, off, alloc_contig;
+ unsigned long mem;
+
+ /* Decide if we should alloc contiguous or fragmented memory */
+ /* This has to be identical in jpg_fbuffer_alloc and jpg_fbuffer_free */
+
+ alloc_contig = (zr->jpg_bufsize < MAX_KMALLOC_MEM);
+
+ for (i = 0; i < zr->jpg_nbufs; i++) {
+ if (zr->jpg_gbuf[i].frag_tab)
+ printk(KERN_WARNING "%s: jpg_fbuffer_alloc: buffer %d allready allocated ???\n", zr->name, i);
+
+ /* Allocate fragment table for this buffer */
+
+ mem = get_free_page(GFP_KERNEL);
+ if (mem == 0) {
+ printk(KERN_ERR "%s: jpg_fbuffer_alloc: get_free_page (frag_tab) failed for buffer %d\n", zr->name, i);
+ jpg_fbuffer_free(zr);
+ return -ENOBUFS;
+ }
+ memset((void *) mem, 0, PAGE_SIZE);
+ zr->jpg_gbuf[i].frag_tab = (u32 *) mem;
+ zr->jpg_gbuf[i].frag_tab_bus = virt_to_bus((void *) mem);
+
+ if (alloc_contig) {
+ mem = (unsigned long) kmalloc(zr->jpg_bufsize, GFP_KERNEL);
+ if (mem == 0) {
+ jpg_fbuffer_free(zr);
+ return -ENOBUFS;
+ }
+ zr->jpg_gbuf[i].frag_tab[0] = virt_to_bus((void *) mem);
+ zr->jpg_gbuf[i].frag_tab[1] = ((zr->jpg_bufsize / 4) << 1) | 1;
+ for (off = 0; off < zr->jpg_bufsize; off += PAGE_SIZE)
+ mem_map_reserve(MAP_NR(mem + off));
+ } else {
+ /* jpg_bufsize is alreay page aligned */
+ for (j = 0; j < zr->jpg_bufsize / PAGE_SIZE; j++) {
+ mem = get_free_page(GFP_KERNEL);
+ if (mem == 0) {
+ jpg_fbuffer_free(zr);
+ return -ENOBUFS;
+ }
+ zr->jpg_gbuf[i].frag_tab[2 * j] = virt_to_bus((void *) mem);
+ zr->jpg_gbuf[i].frag_tab[2 * j + 1] = (PAGE_SIZE / 4) << 1;
+ mem_map_reserve(MAP_NR(mem));
+ }
+
+ zr->jpg_gbuf[i].frag_tab[2 * j - 1] |= 1;
+ }
+ }
+
+ DEBUG(printk("jpg_fbuffer_alloc: %d KB allocated\n",
+ (zr->jpg_nbufs * zr->jpg_bufsize) >> 10));
+ zr->jpg_buffers_allocated = 1;
+ return 0;
+}
+
+/* free the MJPEG grab buffers */
+static void jpg_fbuffer_free(struct zoran *zr)
+{
+ int i, j, off, alloc_contig;
+ unsigned char *mem;
+
+ /* Decide if we should alloc contiguous or fragmented memory */
+ /* This has to be identical in jpg_fbuffer_alloc and jpg_fbuffer_free */
+
+ alloc_contig = (zr->jpg_bufsize < MAX_KMALLOC_MEM);
+
+ for (i = 0; i < zr->jpg_nbufs; i++) {
+ if (!zr->jpg_gbuf[i].frag_tab)
+ continue;
+
+ if (alloc_contig) {
+ if (zr->jpg_gbuf[i].frag_tab[0]) {
+ mem = (unsigned char *) bus_to_virt(zr->jpg_gbuf[i].frag_tab[0]);
+ for (off = 0; off < zr->jpg_bufsize; off += PAGE_SIZE)
+ mem_map_unreserve(MAP_NR(mem + off));
+ kfree((void *) mem);
+ zr->jpg_gbuf[i].frag_tab[0] = 0;
+ zr->jpg_gbuf[i].frag_tab[1] = 0;
+ }
+ } else {
+ for (j = 0; j < zr->jpg_bufsize / PAGE_SIZE; j++) {
+ if (!zr->jpg_gbuf[i].frag_tab[2 * j])
+ break;
+ mem_map_unreserve(MAP_NR(bus_to_virt(zr->jpg_gbuf[i].frag_tab[2 * j])));
+ free_page((unsigned long) bus_to_virt(zr->jpg_gbuf[i].frag_tab[2 * j]));
+ zr->jpg_gbuf[i].frag_tab[2 * j] = 0;
+ zr->jpg_gbuf[i].frag_tab[2 * j + 1] = 0;
+ }
+ }
+
+ free_page((unsigned long) zr->jpg_gbuf[i].frag_tab);
+ zr->jpg_gbuf[i].frag_tab = NULL;
+ }
+ zr->jpg_buffers_allocated = 0;
+}
+
+
+/* ----------------------------------------------------------------------- */
+
+/* I2C functions */
+
+#define I2C_DELAY 10
+
+
+/* software I2C functions */
+
+static void i2c_setlines(struct i2c_bus *bus, int ctrl, int data)
+{
+ struct zoran *zr = (struct zoran *) bus->data;
+ btwrite((data << 1) | ctrl, ZR36057_I2CBR);
+ btread(ZR36057_I2CBR);
+ udelay(I2C_DELAY);
+}
+
+static int i2c_getdataline(struct i2c_bus *bus)
+{
+ struct zoran *zr = (struct zoran *) bus->data;
+ return (btread(ZR36057_I2CBR) >> 1) & 1;
+}
+
+void attach_inform(struct i2c_bus *bus, int id)
+{
+ DEBUG(struct zoran *zr = (struct zoran *) bus->data);
+ DEBUG(printk(BUZ_DEBUG "-%u: i2c attach %02x\n", zr->id, id));
+}
+
+void detach_inform(struct i2c_bus *bus, int id)
+{
+ DEBUG(struct zoran *zr = (struct zoran *) bus->data);
+ DEBUG(printk(BUZ_DEBUG "-%u: i2c detach %02x\n", zr->id, id));
+}
+
+static struct i2c_bus zoran_i2c_bus_template =
+{
+ "zr36057",
+ I2C_BUSID_BT848,
+ NULL,
+
+ SPIN_LOCK_UNLOCKED,
+
+ attach_inform,
+ detach_inform,
+
+ i2c_setlines,
+ i2c_getdataline,
+ NULL,
+ NULL,
+};
+
+
+/* ----------------------------------------------------------------------- */
+
+static void GPIO(struct zoran *zr, unsigned bit, unsigned value)
+{
+ u32 reg;
+ u32 mask;
+
+ mask = 1 << (24 + bit);
+ reg = btread(ZR36057_GPPGCR1) & ~mask;
+ if (value) {
+ reg |= mask;
+ }
+ btwrite(reg, ZR36057_GPPGCR1);
+ /* Stop any PCI posting on the GPIO bus */
+ btread(ZR36057_I2CBR);
+}
+
+
+/*
+ * Set the registers for the size we have specified. Don't bother
+ * trying to understand this without the ZR36057 manual in front of
+ * you [AC].
+ *
+ * PS: The manual is free for download in .pdf format from
+ * www.zoran.com - nicely done those folks.
+ */
+
+struct tvnorm {
+ u16 Wt, Wa, Ht, Ha, HStart, VStart;
+};
+
+static struct tvnorm tvnorms[] =
+{
+ /* PAL-BDGHI */
+ {864, 720, 625, 576, 31, 16},
+ /* NTSC */
+ {858, 720, 525, 480, 21, 8},
+};
+#define TVNORMS (sizeof(tvnorms) / sizeof(tvnorm))
+
+static int format2bpp(int format)
+{
+ int bpp;
+
+ /* Determine the number of bytes per pixel for the video format requested */
+
+ switch (format) {
+
+ case VIDEO_PALETTE_YUV422:
+ bpp = 2;
+ break;
+
+ case VIDEO_PALETTE_RGB555:
+ bpp = 2;
+ break;
+
+ case VIDEO_PALETTE_RGB565:
+ bpp = 2;
+ break;
+
+ case VIDEO_PALETTE_RGB24:
+ bpp = 3;
+ break;
+
+ case VIDEO_PALETTE_RGB32:
+ bpp = 4;
+ break;
+
+ default:
+ bpp = 0;
+ }
+
+ return bpp;
+}
+
+/*
+ * set geometry
+ */
+static void zr36057_set_vfe(struct zoran *zr, int video_width, int video_height,
+ unsigned int video_format)
+{
+ struct tvnorm *tvn;
+ unsigned HStart, HEnd, VStart, VEnd;
+ unsigned DispMode;
+ unsigned VidWinWid, VidWinHt;
+ unsigned hcrop1, hcrop2, vcrop1, vcrop2;
+ unsigned Wa, We, Ha, He;
+ unsigned X, Y, HorDcm, VerDcm;
+ u32 reg;
+ unsigned mask_line_size;
+
+ if (zr->params.norm < 0 || zr->params.norm > 1) {
+ printk(KERN_ERR "%s: set_vfe: video_norm = %d not valid\n", zr->name, zr->params.norm);
+ return;
+ }
+ if (video_width < BUZ_MIN_WIDTH || video_height < BUZ_MIN_HEIGHT) {
+ printk(KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n", zr->name, video_width, video_height);
+ return;
+ }
+ tvn = &tvnorms[zr->params.norm];
+
+ Wa = tvn->Wa;
+ Ha = tvn->Ha;
+
+ /* if window has more than half of active height,
+ switch on interlacing - we want the full information */
+
+ zr->video_interlace = (video_height > Ha / 2);
+
+/**** zr36057 ****/
+
+ /* horizontal */
+ VidWinWid = video_width;
+ X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
+ We = (VidWinWid * 64) / X;
+ HorDcm = 64 - X;
+ hcrop1 = 2 * ((tvn->Wa - We) / 4);
+ hcrop2 = tvn->Wa - We - hcrop1;
+ HStart = tvn->HStart | 1;
+ HEnd = HStart + tvn->Wa - 1;
+ HStart += hcrop1;
+ HEnd -= hcrop2;
+ reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
+ | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
+ reg |= ZR36057_VFEHCR_HSPol;
+ btwrite(reg, ZR36057_VFEHCR);
+
+ /* Vertical */
+ DispMode = !zr->video_interlace;
+ VidWinHt = DispMode ? video_height : video_height / 2;
+ Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
+ He = (VidWinHt * 64) / Y;
+ VerDcm = 64 - Y;
+ vcrop1 = (tvn->Ha / 2 - He) / 2;
+ vcrop2 = tvn->Ha / 2 - He - vcrop1;
+ VStart = tvn->VStart;
+ VEnd = VStart + tvn->Ha / 2 - 1;
+ VStart += vcrop1;
+ VEnd -= vcrop2;
+ reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
+ | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
+ reg |= ZR36057_VFEVCR_VSPol;
+ btwrite(reg, ZR36057_VFEVCR);
+
+ /* scaler and pixel format */
+ reg = 0 // ZR36057_VFESPFR_ExtFl /* Trying to live without ExtFl */
+ | (HorDcm << ZR36057_VFESPFR_HorDcm)
+ | (VerDcm << ZR36057_VFESPFR_VerDcm)
+ | (DispMode << ZR36057_VFESPFR_DispMode)
+ | ZR36057_VFESPFR_LittleEndian;
+ /* RJ: I don't know, why the following has to be the opposite
+ of the corresponding ZR36060 setting, but only this way
+ we get the correct colors when uncompressing to the screen */
+ reg |= ZR36057_VFESPFR_VCLKPol;
+ /* RJ: Don't know if that is needed for NTSC also */
+ reg |= ZR36057_VFESPFR_TopField;
+ switch (video_format) {
+
+ case VIDEO_PALETTE_YUV422:
+ reg |= ZR36057_VFESPFR_YUV422;
+ break;
+
+ case VIDEO_PALETTE_RGB555:
+ reg |= ZR36057_VFESPFR_RGB555 | ZR36057_VFESPFR_ErrDif;
+ break;
+
+ case VIDEO_PALETTE_RGB565:
+ reg |= ZR36057_VFESPFR_RGB565 | ZR36057_VFESPFR_ErrDif;
+ break;
+
+ case VIDEO_PALETTE_RGB24:
+ reg |= ZR36057_VFESPFR_RGB888 | ZR36057_VFESPFR_Pack24;
+ break;
+
+ case VIDEO_PALETTE_RGB32:
+ reg |= ZR36057_VFESPFR_RGB888;
+ break;
+
+ default:
+ printk(KERN_INFO "%s: Unknown color_fmt=%x\n", zr->name, video_format);
+ return;
+
+ }
+ if (HorDcm >= 48) {
+ reg |= 3 << ZR36057_VFESPFR_HFilter; /* 5 tap filter */
+ } else if (HorDcm >= 32) {
+ reg |= 2 << ZR36057_VFESPFR_HFilter; /* 4 tap filter */
+ } else if (HorDcm >= 16) {
+ reg |= 1 << ZR36057_VFESPFR_HFilter; /* 3 tap filter */
+ }
+ btwrite(reg, ZR36057_VFESPFR);
+
+ /* display configuration */
+
+ reg = (16 << ZR36057_VDCR_MinPix)
+ | (VidWinHt << ZR36057_VDCR_VidWinHt)
+ | (VidWinWid << ZR36057_VDCR_VidWinWid);
+ if (triton)
+ reg &= ~ZR36057_VDCR_Triton;
+ else
+ reg |= ZR36057_VDCR_Triton;
+ btwrite(reg, ZR36057_VDCR);
+
+ /* Write overlay clipping mask data, but don't enable overlay clipping */
+ /* RJ: since this makes only sense on the screen, we use
+ zr->window.width instead of video_width */
+
+ mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
+ reg = virt_to_bus(zr->overlay_mask);
+ btwrite(reg, ZR36057_MMTR);
+ reg = virt_to_bus(zr->overlay_mask + mask_line_size);
+ btwrite(reg, ZR36057_MMBR);
+ reg = mask_line_size - (zr->window.width + 31) / 32;
+ if (DispMode == 0)
+ reg += mask_line_size;
+ reg <<= ZR36057_OCR_MaskStride;
+ btwrite(reg, ZR36057_OCR);
+
+}
+
+/*
+ * Switch overlay on or off
+ */
+
+static void zr36057_overlay(struct zoran *zr, int on)
+{
+ int fmt, bpp;
+ u32 reg;
+
+ if (on) {
+ /* do the necessary settings ... */
+
+ btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR); /* switch it off first */
+
+ switch (zr->buffer.depth) {
+ case 15:
+ fmt = VIDEO_PALETTE_RGB555;
+ bpp = 2;
+ break;
+ case 16:
+ fmt = VIDEO_PALETTE_RGB565;
+ bpp = 2;
+ break;
+ case 24:
+ fmt = VIDEO_PALETTE_RGB24;
+ bpp = 3;
+ break;
+ case 32:
+ fmt = VIDEO_PALETTE_RGB32;
+ bpp = 4;
+ break;
+ default:
+ fmt = 0;
+ bpp = 0;
+ }
+
+ zr36057_set_vfe(zr, zr->window.width, zr->window.height, fmt);
+
+ /* Start and length of each line MUST be 4-byte aligned.
+ This should be allready checked before the call to this routine.
+ All error messages are internal driver checking only! */
+
+ /* video display top and bottom registers */
+
+ reg = (u32) zr->buffer.base
+ + zr->window.x * bpp
+ + zr->window.y * zr->buffer.bytesperline;
+ btwrite(reg, ZR36057_VDTR);
+ if (reg & 3)
+ printk(KERN_ERR "%s: zr36057_overlay: video_address not aligned\n", zr->name);
+ if (zr->video_interlace)
+ reg += zr->buffer.bytesperline;
+ btwrite(reg, ZR36057_VDBR);
+
+ /* video stride, status, and frame grab register */
+
+ reg = zr->buffer.bytesperline - zr->window.width * bpp;
+ if (zr->video_interlace)
+ reg += zr->buffer.bytesperline;
+ if (reg & 3)
+ printk(KERN_ERR "%s: zr36057_overlay: video_stride not aligned\n", zr->name);
+ reg = (reg << ZR36057_VSSFGR_DispStride);
+ reg |= ZR36057_VSSFGR_VidOvf; /* clear overflow status */
+ btwrite(reg, ZR36057_VSSFGR);
+
+ /* Set overlay clipping */
+
+ if (zr->window.clipcount)
+ btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
+
+ /* ... and switch it on */
+
+ btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
+ } else {
+ /* Switch it off */
+
+ btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
+ }
+}
+
+/*
+ * The overlay mask has one bit for each pixel on a scan line,
+ * and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
+ */
+static void write_overlay_mask(struct zoran *zr, struct video_clip *vp, int count)
+{
+ unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
+ u32 *mask;
+ int x, y, width, height;
+ unsigned i, j, k;
+ u32 reg;
+
+ /* fill mask with one bits */
+ memset(zr->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
+ reg = 0;
+
+ for (i = 0; i < count; ++i) {
+ /* pick up local copy of clip */
+ x = vp[i].x;
+ y = vp[i].y;
+ width = vp[i].width;
+ height = vp[i].height;
+
+ /* trim clips that extend beyond the window */
+ if (x < 0) {
+ width += x;
+ x = 0;
+ }
+ if (y < 0) {
+ height += y;
+ y = 0;
+ }
+ if (x + width > zr->window.width) {
+ width = zr->window.width - x;
+ }
+ if (y + height > zr->window.height) {
+ height = zr->window.height - y;
+ }
+ /* ignore degenerate clips */
+ if (height <= 0) {
+ continue;
+ }
+ if (width <= 0) {
+ continue;
+ }
+ /* apply clip for each scan line */
+ for (j = 0; j < height; ++j) {
+ /* reset bit for each pixel */
+ /* this can be optimized later if need be */
+ mask = zr->overlay_mask + (y + j) * mask_line_size;
+ for (k = 0; k < width; ++k) {
+ mask[(x + k) / 32] &= ~((u32) 1 << (x + k) % 32);
+ }
+ }
+ }
+}
+
+/* Enable/Disable uncompressed memory grabbing of the 36057 */
+
+static void zr36057_set_memgrab(struct zoran *zr, int mode)
+{
+ if (mode) {
+ if (btread(ZR36057_VSSFGR) & (ZR36057_VSSFGR_SnapShot | ZR36057_VSSFGR_FrameGrab))
+ printk(KERN_WARNING "%s: zr36057_set_memgrab_on with SnapShot or FrameGrab on ???\n", zr->name);
+
+ /* switch on VSync interrupts */
+
+ btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
+
+ btor(ZR36057_ICR_GIRQ0, ZR36057_ICR);
+
+ /* enable SnapShot */
+
+ btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
+
+ /* Set zr36057 video front end and enable video */
+
+#ifdef XAWTV_HACK
+ zr36057_set_vfe(zr, zr->gwidth > 720 ? 720 : zr->gwidth, zr->gheight, zr->gformat);
+#else
+ zr36057_set_vfe(zr, zr->gwidth, zr->gheight, zr->gformat);
+#endif
+
+ zr->v4l_memgrab_active = 1;
+ } else {
+ zr->v4l_memgrab_active = 0;
+
+ /* switch off VSync interrupts */
+
+ btand(~ZR36057_ICR_GIRQ0, ZR36057_ICR);
+
+ /* reenable grabbing to screen if it was running */
+
+ if (zr->v4l_overlay_active) {
+ zr36057_overlay(zr, 1);
+ } else {
+ btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
+ btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
+ }
+ }
+}
+
+static int wait_grab_pending(struct zoran *zr)
+{
+ unsigned long flags;
+
+ /* wait until all pending grabs are finished */
+
+ if (!zr->v4l_memgrab_active)
+ return 0;
+
+ while (zr->v4l_pend_tail != zr->v4l_pend_head) {
+ interruptible_sleep_on(&zr->v4l_capq);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ }
+
+ spin_lock_irqsave(&zr->lock, flags);
+ zr36057_set_memgrab(zr, 0);
+ spin_unlock_irqrestore(&zr->lock, flags);
+
+ return 0;
+}
+
+/*
+ * V4L Buffer grabbing
+ */
+
+static int v4l_grab(struct zoran *zr, struct video_mmap *mp)
+{
+ unsigned long flags;
+ int res, bpp;
+
+ /*
+ * There is a long list of limitations to what is allowed to be grabbed
+ * We don't output error messages her, since some programs (e.g. xawtv)
+ * just try several settings to find out what is valid or not.
+ */
+
+ /* No grabbing outside the buffer range! */
+
+ if (mp->frame >= v4l_nbufs || mp->frame < 0)
+ return -EINVAL;
+
+ /* Check size and format of the grab wanted */
+
+ if (mp->height < BUZ_MIN_HEIGHT || mp->width < BUZ_MIN_WIDTH)
+ return -EINVAL;
+ if (mp->height > BUZ_MAX_HEIGHT || mp->width > BUZ_MAX_WIDTH)
+ return -EINVAL;
+
+ bpp = format2bpp(mp->format);
+ if (bpp == 0)
+ return -EINVAL;
+
+ /* Check against available buffer size */
+
+ if (mp->height * mp->width * bpp > v4l_bufsize)
+ return -EINVAL;
+
+ /* The video front end needs 4-byte alinged line sizes */
+
+ if ((bpp == 2 && (mp->width & 1)) || (bpp == 3 && (mp->width & 3)))
+ return -EINVAL;
+
+ /*
+ * To minimize the time spent in the IRQ routine, we avoid setting up
+ * the video front end there.
+ * If this grab has different parameters from a running streaming capture
+ * we stop the streaming capture and start it over again.
+ */
+
+ if (zr->v4l_memgrab_active &&
+ (zr->gwidth != mp->width || zr->gheight != mp->height || zr->gformat != mp->format)) {
+ res = wait_grab_pending(zr);
+ if (res)
+ return res;
+ }
+ zr->gwidth = mp->width;
+ zr->gheight = mp->height;
+ zr->gformat = mp->format;
+ zr->gbpl = bpp * zr->gwidth;
+
+
+ spin_lock_irqsave(&zr->lock, flags);
+
+ /* make sure a grab isn't going on currently with this buffer */
+
+ switch (zr->v4l_gbuf[mp->frame].state) {
+
+ default:
+ case BUZ_STATE_PEND:
+ res = -EBUSY; /* what are you doing? */
+ break;
+
+ case BUZ_STATE_USER:
+ case BUZ_STATE_DONE:
+ /* since there is at least one unused buffer there's room for at least one more pend[] entry */
+ zr->v4l_pend[zr->v4l_pend_head++ & V4L_MASK_FRAME] = mp->frame;
+ zr->v4l_gbuf[mp->frame].state = BUZ_STATE_PEND;
+ res = 0;
+ break;
+
+ }
+
+ /* put the 36057 into frame grabbing mode */
+
+ if (!res && !zr->v4l_memgrab_active)
+ zr36057_set_memgrab(zr, 1);
+
+ spin_unlock_irqrestore(&zr->lock, flags);
+
+ return res;
+}
+
+/*
+ * Sync on a V4L buffer
+ */
+
+static int v4l_sync(struct zoran *zr, int frame)
+{
+ unsigned long flags;
+
+
+ /* check passed-in frame number */
+ if (frame >= v4l_nbufs || frame < 0) {
+ printk(KERN_ERR "%s: v4l_sync: frame %d is invalid\n", zr->name, frame);
+ return -EINVAL;
+ }
+ /* Check if is buffer was queued at all */
+
+ if (zr->v4l_gbuf[frame].state == BUZ_STATE_USER) {
+// printk(KERN_ERR "%s: v4l_sync: Trying to sync on a buffer which was not queued?\n", zr->name);
+ return -EINVAL;
+ }
+ /* wait on this buffer to get ready */
+
+ while (zr->v4l_gbuf[frame].state == BUZ_STATE_PEND) {
+ interruptible_sleep_on(&zr->v4l_capq);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ }
+
+ /* buffer should now be in BUZ_STATE_DONE */
+
+ if (zr->v4l_gbuf[frame].state != BUZ_STATE_DONE)
+ printk(KERN_ERR "%s: v4l_sync - internal error\n", zr->name);
+
+ /* Check if streaming capture has finished */
+
+ spin_lock_irqsave(&zr->lock, flags);
+
+ if (zr->v4l_pend_tail == zr->v4l_pend_head)
+ zr36057_set_memgrab(zr, 0);
+
+ spin_unlock_irqrestore(&zr->lock, flags);
+
+ return 0;
+}
+/*****************************************************************************
+ * *
+ * Set up the Buz-specific MJPEG part *
+ * *
+ *****************************************************************************/
+
+/*
+ * Wait til post office is no longer busy
+ */
+
+static int post_office_wait(struct zoran *zr)
+{
+ u32 por;
+ u32 ct=0;
+
+ while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
+ ct++;
+ if(ct>100000)
+ {
+ printk(KERN_ERR "%s: timeout on post office.\n", zr->name);
+ return -1;
+ }
+ /* wait for something to happen */
+ }
+ if ((por & ZR36057_POR_POPen) != 0) {
+ printk(KERN_WARNING "%s: pop pending %08x\n", zr->name, por);
+ return -1;
+ }
+ if ((por & (ZR36057_POR_POTime | ZR36057_POR_POPen)) != 0) {
+ printk(KERN_WARNING "%s: pop timeout %08x\n", zr->name, por);
+ return -1;
+ }
+ return 0;
+}
+
+static int post_office_write(struct zoran *zr, unsigned guest, unsigned reg, unsigned value)
+{
+ u32 por;
+
+ post_office_wait(zr);
+ por = ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16) | (value & 0xFF);
+ btwrite(por, ZR36057_POR);
+ return post_office_wait(zr);
+}
+
+static int post_office_read(struct zoran *zr, unsigned guest, unsigned reg)
+{
+ u32 por;
+
+ post_office_wait(zr);
+ por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
+ btwrite(por, ZR36057_POR);
+ if (post_office_wait(zr) < 0) {
+ return -1;
+ }
+ return btread(ZR36057_POR) & 0xFF;
+}
+
+static int zr36060_write_8(struct zoran *zr, unsigned reg, unsigned val)
+{
+ if (post_office_wait(zr)
+ || post_office_write(zr, 0, 1, reg >> 8)
+ || post_office_write(zr, 0, 2, reg)) {
+ return -1;
+ }
+ return post_office_write(zr, 0, 3, val);
+}
+
+static int zr36060_write_16(struct zoran *zr, unsigned reg, unsigned val)
+{
+ if (zr36060_write_8(zr, reg + 0, val >> 8)) {
+ return -1;
+ }
+ return zr36060_write_8(zr, reg + 1, val >> 0);
+}
+
+static int zr36060_write_24(struct zoran *zr, unsigned reg, unsigned val)
+{
+ if (zr36060_write_8(zr, reg + 0, val >> 16)) {
+ return -1;
+ }
+ return zr36060_write_16(zr, reg + 1, val >> 0);
+}
+
+static int zr36060_write_32(struct zoran *zr, unsigned reg, unsigned val)
+{
+ if (zr36060_write_16(zr, reg + 0, val >> 16)) {
+ return -1;
+ }
+ return zr36060_write_16(zr, reg + 2, val >> 0);
+}
+
+static u32 zr36060_read_8(struct zoran *zr, unsigned reg)
+{
+ if (post_office_wait(zr)
+ || post_office_write(zr, 0, 1, reg >> 8)
+ || post_office_write(zr, 0, 2, reg)) {
+ return -1;
+ }
+ return post_office_read(zr, 0, 3) & 0xFF;
+}
+
+static int zr36060_reset(struct zoran *zr)
+{
+ return post_office_write(zr, 3, 0, 0);
+}
+
+static void zr36060_sleep(struct zoran *zr, int sleep)
+{
+ GPIO(zr, 1, !sleep);
+}
+
+
+static void zr36060_set_jpg(struct zoran *zr, enum zoran_codec_mode mode)
+{
+ struct tvnorm *tvn;
+ u32 reg;
+ int size;
+
+ reg = (1 << 0) /* CodeMstr */
+ |(0 << 2) /* CFIS=0 */
+ |(0 << 6) /* Endian=0 */
+ |(0 << 7); /* Code16=0 */
+ zr36060_write_8(zr, 0x002, reg);
+
+ switch (mode) {
+
+ case BUZ_MODE_MOTION_DECOMPRESS:
+ case BUZ_MODE_STILL_DECOMPRESS:
+ reg = 0x00; /* Codec mode = decompression */
+ break;
+
+ case BUZ_MODE_MOTION_COMPRESS:
+ case BUZ_MODE_STILL_COMPRESS:
+ default:
+ reg = 0xa4; /* Codec mode = compression with variable scale factor */
+ break;
+
+ }
+ zr36060_write_8(zr, 0x003, reg);
+
+ reg = 0x00; /* reserved, mbz */
+ zr36060_write_8(zr, 0x004, reg);
+
+ reg = 0xff; /* 510 bits/block */
+ zr36060_write_8(zr, 0x005, reg);
+
+ /* JPEG markers */
+ reg = (zr->params.jpeg_markers) & 0x38; /* DRI, DQT, DHT */
+ if (zr->params.COM_len)
+ reg |= JPEG_MARKER_COM;
+ if (zr->params.APP_len)
+ reg |= JPEG_MARKER_APP;
+ zr36060_write_8(zr, 0x006, reg);
+
+ reg = (0 << 3) /* DATERR=0 */
+ |(0 << 2) /* END=0 */
+ |(0 << 1) /* EOI=0 */
+ |(0 << 0); /* EOAV=0 */
+ zr36060_write_8(zr, 0x007, reg);
+
+ /* code volume */
+
+ /* Target field size in pixels: */
+ tvn = &tvnorms[zr->params.norm];
+ size = (tvn->Ha / 2) * (tvn->Wa) / (zr->params.HorDcm) / (zr->params.VerDcm);
+
+ /* Target compressed field size in bits: */
+ size = size * 16; /* uncompressed size in bits */
+ size = size * zr->params.quality / 400; /* quality = 100 is a compression ratio 1:4 */
+
+ /* Lower limit (arbitrary, 1 KB) */
+ if (size < 8192)
+ size = 8192;
+
+ /* Upper limit: 7/8 of the code buffers */
+ if (size * zr->params.field_per_buff > zr->jpg_bufsize * 7)
+ size = zr->jpg_bufsize * 7 / zr->params.field_per_buff;
+
+ reg = size;
+ zr36060_write_32(zr, 0x009, reg);
+
+ /* how do we set initial SF as a function of quality parameter? */
+ reg = 0x0100; /* SF=1.0 */
+ zr36060_write_16(zr, 0x011, reg);
+
+ reg = 0x00ffffff; /* AF=max */
+ zr36060_write_24(zr, 0x013, reg);
+
+ reg = 0x0000; /* test */
+ zr36060_write_16(zr, 0x024, reg);
+}
+
+static void zr36060_set_video(struct zoran *zr, enum zoran_codec_mode mode)
+{
+ struct tvnorm *tvn;
+ u32 reg;
+
+ reg = (0 << 7) /* Video8=0 */
+ |(0 << 6) /* Range=0 */
+ |(0 << 3) /* FlDet=0 */
+ |(1 << 2) /* FlVedge=1 */
+ |(0 << 1) /* FlExt=0 */
+ |(0 << 0); /* SyncMstr=0 */
+
+ /* According to ZR36067 documentation, FlDet should correspond
+ to the odd_even flag of the ZR36067 */
+ if (zr->params.odd_even)
+ reg |= (1 << 3);
+
+ if (mode != BUZ_MODE_STILL_DECOMPRESS) {
+ /* limit pixels to range 16..235 as per CCIR-601 */
+ reg |= (1 << 6); /* Range=1 */
+ }
+ zr36060_write_8(zr, 0x030, reg);
+
+ reg = (0 << 7) /* VCLKPol=0 */
+ |(0 << 6) /* PValPol=0 */
+ |(1 << 5) /* PoePol=1 */
+ |(0 << 4) /* SImgPol=0 */
+ |(0 << 3) /* BLPol=0 */
+ |(0 << 2) /* FlPol=0 */
+ |(0 << 1) /* HSPol=0, sync on falling edge */
+ |(1 << 0); /* VSPol=1 */
+ zr36060_write_8(zr, 0x031, reg);
+
+ switch (zr->params.HorDcm) {
+ default:
+ case 1:
+ reg = (0 << 0);
+ break; /* HScale = 0 */
+
+ case 2:
+ reg = (1 << 0);
+ break; /* HScale = 1 */
+
+ case 4:
+ reg = (2 << 0);
+ break; /* HScale = 2 */
+ }
+ if (zr->params.VerDcm == 2)
+ reg |= (1 << 2);
+ zr36060_write_8(zr, 0x032, reg);
+
+ reg = 0x80; /* BackY */
+ zr36060_write_8(zr, 0x033, reg);
+
+ reg = 0xe0; /* BackU */
+ zr36060_write_8(zr, 0x034, reg);
+
+ reg = 0xe0; /* BackV */
+ zr36060_write_8(zr, 0x035, reg);
+
+ /* sync generator */
+
+ tvn = &tvnorms[zr->params.norm];
+
+ reg = tvn->Ht - 1; /* Vtotal */
+ zr36060_write_16(zr, 0x036, reg);
+
+ reg = tvn->Wt - 1; /* Htotal */
+ zr36060_write_16(zr, 0x038, reg);
+
+ reg = 6 - 1; /* VsyncSize */
+ zr36060_write_8(zr, 0x03a, reg);
+
+ reg = 100 - 1; /* HsyncSize */
+ zr36060_write_8(zr, 0x03b, reg);
+
+ reg = tvn->VStart - 1; /* BVstart */
+ zr36060_write_8(zr, 0x03c, reg);
+
+ reg += tvn->Ha / 2; /* BVend */
+ zr36060_write_16(zr, 0x03e, reg);
+
+ reg = tvn->HStart - 1; /* BHstart */
+ zr36060_write_8(zr, 0x03d, reg);
+
+ reg += tvn->Wa; /* BHend */
+ zr36060_write_16(zr, 0x040, reg);
+
+ /* active area */
+ reg = zr->params.img_y + tvn->VStart; /* Vstart */
+ zr36060_write_16(zr, 0x042, reg);
+
+ reg += zr->params.img_height; /* Vend */
+ zr36060_write_16(zr, 0x044, reg);
+
+ reg = zr->params.img_x + tvn->HStart; /* Hstart */
+ zr36060_write_16(zr, 0x046, reg);
+
+ reg += zr->params.img_width; /* Hend */
+ zr36060_write_16(zr, 0x048, reg);
+
+ /* subimage area */
+ reg = zr->params.img_y + tvn->VStart; /* SVstart */
+ zr36060_write_16(zr, 0x04a, reg);
+
+ reg += zr->params.img_height; /* SVend */
+ zr36060_write_16(zr, 0x04c, reg);
+
+ reg = zr->params.img_x + tvn->HStart; /* SHstart */
+ zr36060_write_16(zr, 0x04e, reg);
+
+ reg += zr->params.img_width; /* SHend */
+ zr36060_write_16(zr, 0x050, reg);
+}
+
+static void zr36060_set_jpg_SOF(struct zoran *zr)
+{
+ u32 reg;
+
+
+ reg = 0xffc0; /* SOF marker */
+ zr36060_write_16(zr, 0x060, reg);
+
+ reg = 17; /* SOF length */
+ zr36060_write_16(zr, 0x062, reg);
+
+ reg = 8; /* precision 8 bits */
+ zr36060_write_8(zr, 0x064, reg);
+
+ reg = zr->params.img_height / zr->params.VerDcm; /* image height */
+ zr36060_write_16(zr, 0x065, reg);
+
+ reg = zr->params.img_width / zr->params.HorDcm; /* image width */
+ zr36060_write_16(zr, 0x067, reg);
+
+ reg = 3; /* 3 color components */
+ zr36060_write_8(zr, 0x069, reg);
+
+ reg = 0x002100; /* Y component */
+ zr36060_write_24(zr, 0x06a, reg);
+
+ reg = 0x011101; /* U component */
+ zr36060_write_24(zr, 0x06d, reg);
+
+ reg = 0x021101; /* V component */
+ zr36060_write_24(zr, 0x070, reg);
+}
+
+static void zr36060_set_jpg_SOS(struct zoran *zr)
+{
+ u32 reg;
+
+
+ reg = 0xffda; /* SOS marker */
+ zr36060_write_16(zr, 0x07a, reg);
+
+ reg = 12; /* SOS length */
+ zr36060_write_16(zr, 0x07c, reg);
+
+ reg = 3; /* 3 color components */
+ zr36060_write_8(zr, 0x07e, reg);
+
+ reg = 0x0000; /* Y component */
+ zr36060_write_16(zr, 0x07f, reg);
+
+ reg = 0x0111; /* U component */
+ zr36060_write_16(zr, 0x081, reg);
+
+ reg = 0x0211; /* V component */
+ zr36060_write_16(zr, 0x083, reg);
+
+ reg = 0x003f00; /* Start, end spectral scans */
+ zr36060_write_24(zr, 0x085, reg);
+}
+
+static void zr36060_set_jpg_DRI(struct zoran *zr)
+{
+ u32 reg;
+
+
+ reg = 0xffdd; /* DRI marker */
+ zr36060_write_16(zr, 0x0c0, reg);
+
+ reg = 4; /* DRI length */
+ zr36060_write_16(zr, 0x0c2, reg);
+
+ reg = 8; /* length in MCUs */
+ zr36060_write_16(zr, 0x0c4, reg);
+}
+
+static void zr36060_set_jpg_DQT(struct zoran *zr)
+{
+ unsigned i;
+ unsigned adr;
+ static const u8 dqt[] =
+ {
+ 0xff, 0xdb, /* DHT marker */
+ 0x00, 0x84, /* DHT length */
+ 0x00, /* table ID 0 */
+ 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
+ 0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28,
+ 0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
+ 0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
+ 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44,
+ 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57,
+ 0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
+ 0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
+ 0x01, /* table ID 1 */
+ 0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
+ 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
+ };
+
+ /* write fixed quantitization tables */
+ adr = 0x0cc;
+ for (i = 0; i < sizeof(dqt); ++i) {
+ zr36060_write_8(zr, adr++, dqt[i]);
+ }
+}
+
+static void zr36060_set_jpg_DHT(struct zoran *zr)
+{
+ unsigned i;
+ unsigned adr;
+ static const u8 dht[] =
+ {
+ 0xff, 0xc4, /* DHT marker */
+ 0x01, 0xa2, /* DHT length */
+ 0x00, /* table class 0, ID 0 */
+ 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, /* # codes of length 1..8 */
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* # codes of length 8..16 */
+ 0x00, /* values for codes of length 2 */
+ 0x01, 0x02, 0x03, 0x04, 0x05, /* values for codes of length 3 */
+ 0x06, /* values for codes of length 4 */
+ 0x07, /* values for codes of length 5 */
+ 0x08, /* values for codes of length 6 */
+ 0x09, /* values for codes of length 7 */
+ 0x0a, /* values for codes of length 8 */
+ 0x0b, /* values for codes of length 9 */
+ 0x01, /* table class 0, ID 1 */
+ 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, /* # codes of length 1..8 */
+ 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, /* # codes of length 9..16 */
+ 0x00, 0x01, 0x02, /* values for codes of length 2 */
+ 0x03, /* values for codes of length 3 */
+ 0x04, /* values for codes of length 4 */
+ 0x05, /* values for codes of length 5 */
+ 0x06, /* values for codes of length 6 */
+ 0x07, /* values for codes of length 7 */
+ 0x08, /* values for codes of length 8 */
+ 0x09, /* values for codes of length 9 */
+ 0x0a, /* values for codes of length 10 */
+ 0x0b, /* values for codes of length 11 */
+ 0x10,
+ 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
+ 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
+ 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
+ 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
+ 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
+ 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
+ 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
+ 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
+ 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
+ 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
+ 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+ 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
+ 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
+ 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
+ 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
+ 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
+ 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
+ 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
+ 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
+ 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
+ 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
+ 0xf9, 0xfa, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04,
+ 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, 0x00,
+ 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11,
+ 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51,
+ 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08,
+ 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23,
+ 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, 0x0a,
+ 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18,
+ 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35,
+ 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45,
+ 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55,
+ 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65,
+ 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75,
+ 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84,
+ 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93,
+ 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2,
+ 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa,
+ 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9,
+ 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8,
+ 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
+ 0xd8, 0xd9, 0xda, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6,
+ 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5,
+ 0xf6, 0xf7, 0xf8, 0xf9, 0xfa
+ };
+
+ /* write fixed Huffman tables */
+ adr = 0x1d4;
+ for (i = 0; i < sizeof(dht); ++i) {
+ zr36060_write_8(zr, adr++, dht[i]);
+ }
+}
+
+static void zr36060_set_jpg_APP(struct zoran *zr)
+{
+ unsigned adr;
+ int len, i;
+ u32 reg;
+
+
+ len = zr->params.APP_len;
+ if (len < 0)
+ len = 0;
+ if (len > 60)
+ len = 60;
+
+ i = zr->params.APPn;
+ if (i < 0)
+ i = 0;
+ if (i > 15)
+ i = 15;
+
+ reg = 0xffe0 + i; /* APPn marker */
+ zr36060_write_16(zr, 0x380, reg);
+
+ reg = len + 2; /* APPn len */
+ zr36060_write_16(zr, 0x382, reg);
+
+ /* write APPn data */
+ adr = 0x384;
+ for (i = 0; i < 60; i++) {
+ zr36060_write_8(zr, adr++, (i < len ? zr->params.APP_data[i] : 0));
+ }
+}
+
+static void zr36060_set_jpg_COM(struct zoran *zr)
+{
+ unsigned adr;
+ int len, i;
+ u32 reg;
+
+
+ len = zr->params.COM_len;
+ if (len < 0)
+ len = 0;
+ if (len > 60)
+ len = 60;
+
+ reg = 0xfffe; /* COM marker */
+ zr36060_write_16(zr, 0x3c0, reg);
+
+ reg = len + 2; /* COM len */
+ zr36060_write_16(zr, 0x3c2, reg);
+
+ /* write COM data */
+ adr = 0x3c4;
+ for (i = 0; i < 60; i++) {
+ zr36060_write_8(zr, adr++, (i < len ? zr->params.COM_data[i] : 0));
+ }
+}
+
+static void zr36060_set_cap(struct zoran *zr, enum zoran_codec_mode mode)
+{
+ unsigned i;
+ u32 reg;
+
+ zr36060_reset(zr);
+ mdelay(10);
+
+ reg = (0 << 7) /* Load=0 */
+ |(1 << 0); /* SynRst=1 */
+ zr36060_write_8(zr, 0x000, reg);
+
+ zr36060_set_jpg(zr, mode);
+ zr36060_set_video(zr, mode);
+ zr36060_set_jpg_SOF(zr);
+ zr36060_set_jpg_SOS(zr);
+ zr36060_set_jpg_DRI(zr);
+ zr36060_set_jpg_DQT(zr);
+ zr36060_set_jpg_DHT(zr);
+ zr36060_set_jpg_APP(zr);
+ zr36060_set_jpg_COM(zr);
+
+ reg = (1 << 7) /* Load=1 */
+ |(0 << 0); /* SynRst=0 */
+ zr36060_write_8(zr, 0x000, reg);
+
+ /* wait for codec to unbusy */
+ for (i = 0; i < 1000; ++i) {
+ reg = zr36060_read_8(zr, 0x001);
+ if ((reg & (1 << 7)) == 0) {
+ DEBUG(printk(KERN_DEBUG "060: loaded, loops=%u\n", i));
+ return;
+ }
+ udelay(1000);
+ }
+ printk(KERN_INFO "060: stuck busy, statux=%02x\n", reg);
+}
+
+static void zr36057_set_jpg(struct zoran *zr, enum zoran_codec_mode mode)
+{
+ struct tvnorm *tvn;
+ u32 reg;
+ int i;
+
+ tvn = &tvnorms[zr->params.norm];
+
+ /* assert P_Reset */
+ btwrite(0, ZR36057_JPC);
+
+ /* re-initialize DMA ring stuff */
+ zr->jpg_que_head = 0;
+ zr->jpg_dma_head = 0;
+ zr->jpg_dma_tail = 0;
+ zr->jpg_que_tail = 0;
+ zr->jpg_seq_num = 0;
+ for (i = 0; i < BUZ_NUM_STAT_COM; ++i) {
+ zr->stat_com[i] = 1; /* mark as unavailable to zr36057 */
+ }
+ for (i = 0; i < zr->jpg_nbufs; i++) {
+ zr->jpg_gbuf[i].state = BUZ_STATE_USER; /* nothing going on */
+ }
+
+ /* MJPEG compression mode */
+ switch (mode) {
+
+ case BUZ_MODE_MOTION_COMPRESS:
+ default:
+ reg = ZR36057_JMC_MJPGCmpMode;
+ break;
+
+ case BUZ_MODE_MOTION_DECOMPRESS:
+ reg = ZR36057_JMC_MJPGExpMode;
+ reg |= ZR36057_JMC_SyncMstr;
+ /* RJ: The following is experimental - improves the output to screen */
+ if (zr->params.VFIFO_FB)
+ reg |= ZR36057_JMC_VFIFO_FB;
+ break;
+
+ case BUZ_MODE_STILL_COMPRESS:
+ reg = ZR36057_JMC_JPGCmpMode;
+ break;
+
+ case BUZ_MODE_STILL_DECOMPRESS:
+ reg = ZR36057_JMC_JPGExpMode;
+ break;
+
+ }
+ reg |= ZR36057_JMC_JPG;
+ if (zr->params.field_per_buff == 1)
+ reg |= ZR36057_JMC_Fld_per_buff;
+ btwrite(reg, ZR36057_JMC);
+
+ /* vertical */
+ btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
+ reg = (6 << ZR36057_VSP_VsyncSize) | (tvn->Ht << ZR36057_VSP_FrmTot);
+ btwrite(reg, ZR36057_VSP);
+ reg = ((zr->params.img_y + tvn->VStart) << ZR36057_FVAP_NAY)
+ | (zr->params.img_height << ZR36057_FVAP_PAY);
+ btwrite(reg, ZR36057_FVAP);
+
+ /* horizontal */
+ btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
+ reg = ((tvn->Wt - 100) << ZR36057_HSP_HsyncStart) | (tvn->Wt << ZR36057_HSP_LineTot);
+ btwrite(reg, ZR36057_HSP);
+ reg = ((zr->params.img_x + tvn->HStart) << ZR36057_FHAP_NAX)
+ | (zr->params.img_width << ZR36057_FHAP_PAX);
+ btwrite(reg, ZR36057_FHAP);
+
+ /* field process parameters */
+ if (zr->params.odd_even)
+ reg = ZR36057_FPP_Odd_Even;
+ else
+ reg = 0;
+ btwrite(reg, ZR36057_FPP);
+
+ /* Set proper VCLK Polarity, else colors will be wrong during playback */
+ btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
+
+ /* code base address and FIFO threshold */
+ reg = virt_to_bus(zr->stat_com);
+ btwrite(reg, ZR36057_JCBA);
+ reg = 0x50;
+ btwrite(reg, ZR36057_JCFT);
+
+ /* JPEG codec guest ID */
+ reg = (1 << ZR36057_JCGI_JPEGuestID) | (0 << ZR36057_JCGI_JPEGuestReg);
+ btwrite(reg, ZR36057_JCGI);
+
+ /* Code transfer guest ID */
+ reg = (0 << ZR36057_MCTCR_CodGuestID) | (3 << ZR36057_MCTCR_CodGuestReg);
+ reg |= ZR36057_MCTCR_CFlush;
+ btwrite(reg, ZR36057_MCTCR);
+
+ /* deassert P_Reset */
+ btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
+}
+
+static void zr36057_enable_jpg(struct zoran *zr, enum zoran_codec_mode mode)
+{
+ static int zero = 0;
+ static int one = 1;
+
+ switch (mode) {
+
+ case BUZ_MODE_MOTION_COMPRESS:
+ zr36060_set_cap(zr, mode);
+ zr36057_set_jpg(zr, mode);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_ENABLE_OUTPUT, &one);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_INPUT, &zero);
+
+ /* deassert P_Reset, assert Code transfer enable */
+ btwrite(IRQ_MASK, ZR36057_ISR);
+ btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+ break;
+
+ case BUZ_MODE_MOTION_DECOMPRESS:
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_ENABLE_OUTPUT, &zero);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_INPUT, &one);
+ zr36060_set_cap(zr, mode);
+ zr36057_set_jpg(zr, mode);
+
+ /* deassert P_Reset, assert Code transfer enable */
+ btwrite(IRQ_MASK, ZR36057_ISR);
+ btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+ break;
+
+ case BUZ_MODE_IDLE:
+ default:
+ /* shut down processing */
+ btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+ btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
+ btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
+ btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
+ btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
+ btwrite(0, ZR36057_ISR);
+ zr36060_reset(zr);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_ENABLE_OUTPUT, &one);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_INPUT, &zero);
+ break;
+
+ }
+ zr->codec_mode = mode;
+}
+
+/*
+ * Queue a MJPEG buffer for capture/playback
+ */
+
+static int jpg_qbuf(struct zoran *zr, int frame, enum zoran_codec_mode mode)
+{
+ unsigned long flags;
+ int res;
+
+ /* Check if buffers are allocated */
+
+ if (!zr->jpg_buffers_allocated) {
+ printk(KERN_ERR "%s: jpg_qbuf: buffers not yet allocated\n", zr->name);
+ return -ENOMEM;
+ }
+ /* Does the user want to stop streaming? */
+
+ if (frame < 0) {
+ if (zr->codec_mode == mode) {
+ zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+ return 0;
+ } else {
+ printk(KERN_ERR "%s: jpg_qbuf - stop streaming but not in streaming mode\n", zr->name);
+ return -EINVAL;
+ }
+ }
+ /* No grabbing outside the buffer range! */
+
+ if (frame >= zr->jpg_nbufs) {
+ printk(KERN_ERR "%s: jpg_qbuf: buffer %d out of range\n", zr->name, frame);
+ return -EINVAL;
+ }
+ /* what is the codec mode right now? */
+
+ if (zr->codec_mode == BUZ_MODE_IDLE) {
+ /* Ok load up the zr36060 and go */
+ zr36057_enable_jpg(zr, mode);
+ } else if (zr->codec_mode != mode) {
+ /* wrong codec mode active - invalid */
+ printk(KERN_ERR "%s: jpg_qbuf - codec in wrong mode\n", zr->name);
+ return -EINVAL;
+ }
+ spin_lock_irqsave(&zr->lock, flags);
+
+ /* make sure a grab isn't going on currently with this buffer */
+
+ switch (zr->jpg_gbuf[frame].state) {
+
+ default:
+ case BUZ_STATE_DMA:
+ case BUZ_STATE_PEND:
+ case BUZ_STATE_DONE:
+ res = -EBUSY; /* what are you doing? */
+ break;
+
+ case BUZ_STATE_USER:
+ /* since there is at least one unused buffer there's room for at least one more pend[] entry */
+ zr->jpg_pend[zr->jpg_que_head++ & BUZ_MASK_FRAME] = frame;
+ zr->jpg_gbuf[frame].state = BUZ_STATE_PEND;
+ zoran_feed_stat_com(zr);
+ res = 0;
+ break;
+
+ }
+
+ spin_unlock_irqrestore(&zr->lock, flags);
+
+ /* Start the zr36060 when the first frame is queued */
+ if (zr->jpg_que_head == 1) {
+ btor(ZR36057_JMC_Go_en, ZR36057_JMC);
+ btwrite(ZR36057_JPC_P_Reset | ZR36057_JPC_CodTrnsEn | ZR36057_JPC_Active, ZR36057_JPC);
+ }
+ return res;
+}
+
+/*
+ * Sync on a MJPEG buffer
+ */
+
+static int jpg_sync(struct zoran *zr, struct zoran_sync *bs)
+{
+ unsigned long flags;
+ int frame;
+
+ if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
+ zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
+ return -EINVAL;
+ }
+ while (zr->jpg_que_tail == zr->jpg_dma_tail) {
+ interruptible_sleep_on(&zr->jpg_capq);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ }
+
+ spin_lock_irqsave(&zr->lock, flags);
+
+ frame = zr->jpg_pend[zr->jpg_que_tail++ & BUZ_MASK_FRAME];
+
+ /* buffer should now be in BUZ_STATE_DONE */
+
+ if (zr->jpg_gbuf[frame].state != BUZ_STATE_DONE)
+ printk(KERN_ERR "%s: jpg_sync - internal error\n", zr->name);
+
+ *bs = zr->jpg_gbuf[frame].bs;
+ zr->jpg_gbuf[frame].state = BUZ_STATE_USER;
+
+ spin_unlock_irqrestore(&zr->lock, flags);
+
+ return 0;
+}
+
+/* when this is called the spinlock must be held */
+static void zoran_feed_stat_com(struct zoran *zr)
+{
+ /* move frames from pending queue to DMA */
+
+ int frame, i, max_stat_com;
+
+ max_stat_com = (zr->params.TmpDcm == 1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
+
+ while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com
+ && zr->jpg_dma_head != zr->jpg_que_head) {
+
+ frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
+ if (zr->params.TmpDcm == 1) {
+ /* fill 1 stat_com entry */
+ i = zr->jpg_dma_head & BUZ_MASK_STAT_COM;
+ zr->stat_com[i] = zr->jpg_gbuf[frame].frag_tab_bus;
+ } else {
+ /* fill 2 stat_com entries */
+ i = (zr->jpg_dma_head & 1) * 2;
+ zr->stat_com[i] = zr->jpg_gbuf[frame].frag_tab_bus;
+ zr->stat_com[i + 1] = zr->jpg_gbuf[frame].frag_tab_bus;
+ }
+ zr->jpg_gbuf[frame].state = BUZ_STATE_DMA;
+ zr->jpg_dma_head++;
+
+ }
+}
+
+/* when this is called the spinlock must be held */
+static void zoran_reap_stat_com(struct zoran *zr)
+{
+ /* move frames from DMA queue to done queue */
+
+ int i;
+ u32 stat_com;
+ unsigned int seq;
+ unsigned int dif;
+ int frame;
+ struct zoran_gbuffer *gbuf;
+
+ /* In motion decompress we don't have a hardware frame counter,
+ we just count the interrupts here */
+
+ if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
+ zr->jpg_seq_num++;
+
+ while (zr->jpg_dma_tail != zr->jpg_dma_head) {
+ if (zr->params.TmpDcm == 1)
+ i = zr->jpg_dma_tail & BUZ_MASK_STAT_COM;
+ else
+ i = (zr->jpg_dma_tail & 1) * 2 + 1;
+
+ stat_com = zr->stat_com[i];
+
+ if ((stat_com & 1) == 0) {
+ return;
+ }
+ frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
+ gbuf = &zr->jpg_gbuf[frame];
+ get_fast_time(&gbuf->bs.timestamp);
+
+ if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
+ gbuf->bs.length = (stat_com & 0x7fffff) >> 1;
+
+ /* update sequence number with the help of the counter in stat_com */
+
+ seq = stat_com >> 24;
+ dif = (seq - zr->jpg_seq_num) & 0xff;
+ zr->jpg_seq_num += dif;
+ } else {
+ gbuf->bs.length = 0;
+ }
+ gbuf->bs.seq = zr->params.TmpDcm == 2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
+ gbuf->state = BUZ_STATE_DONE;
+
+ zr->jpg_dma_tail++;
+ }
+}
+
+static void zoran_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+ u32 stat, astat;
+ int count;
+ struct zoran *zr;
+ unsigned long flags;
+
+ zr = (struct zoran *) dev_id;
+ count = 0;
+
+ spin_lock_irqsave(&zr->lock, flags);
+ while (1) {
+ /* get/clear interrupt status bits */
+ stat = btread(ZR36057_ISR);
+ astat = stat & IRQ_MASK;
+ if (!astat) {
+ break;
+ }
+ btwrite(astat, ZR36057_ISR);
+ IDEBUG(printk(BUZ_DEBUG "-%u: astat %08x stat %08x\n", zr->id, astat, stat));
+
+#if (IRQ_MASK & ZR36057_ISR_GIRQ0)
+ if (astat & ZR36057_ISR_GIRQ0) {
+
+ /* Interrupts may still happen when zr->v4l_memgrab_active is switched off.
+ We simply ignore them */
+
+ if (zr->v4l_memgrab_active) {
+
+/* A lot more checks should be here ... */
+ if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
+ printk(KERN_WARNING "%s: BuzIRQ with SnapShot off ???\n", zr->name);
+
+ if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
+ /* There is a grab on a frame going on, check if it has finished */
+
+ if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
+ /* it is finished, notify the user */
+
+ zr->v4l_gbuf[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
+ zr->v4l_grab_frame = NO_GRAB_ACTIVE;
+ zr->v4l_grab_seq++;
+ zr->v4l_pend_tail++;
+ }
+ }
+ if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
+ wake_up_interruptible(&zr->v4l_capq);
+
+ /* Check if there is another grab queued */
+
+ if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
+ zr->v4l_pend_tail != zr->v4l_pend_head) {
+
+ int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
+ u32 reg;
+
+ zr->v4l_grab_frame = frame;
+
+ /* Set zr36057 video front end and enable video */
+
+ /* Buffer address */
+
+ reg = zr->v4l_gbuf[frame].fbuffer_bus;
+ btwrite(reg, ZR36057_VDTR);
+ if (zr->video_interlace)
+ reg += zr->gbpl;
+ btwrite(reg, ZR36057_VDBR);
+
+ /* video stride, status, and frame grab register */
+
+#ifdef XAWTV_HACK
+ reg = (zr->gwidth > 720) ? ((zr->gwidth & ~3) - 720) * zr->gbpl / zr->gwidth : 0;
+#else
+ reg = 0;
+#endif
+ if (zr->video_interlace)
+ reg += zr->gbpl;
+ reg = (reg << ZR36057_VSSFGR_DispStride);
+ reg |= ZR36057_VSSFGR_VidOvf;
+ reg |= ZR36057_VSSFGR_SnapShot;
+ reg |= ZR36057_VSSFGR_FrameGrab;
+ btwrite(reg, ZR36057_VSSFGR);
+
+ btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
+ }
+ }
+ }
+#endif /* (IRQ_MASK & ZR36057_ISR_GIRQ0) */
+
+#if (IRQ_MASK & ZR36057_ISR_GIRQ1)
+ if (astat & ZR36057_ISR_GIRQ1) {
+ unsigned csr = zr36060_read_8(zr, 0x001);
+ unsigned isr = zr36060_read_8(zr, 0x008);
+
+ IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_GIRQ1 60_code=%02x 60_intr=%02x\n",
+ zr->name, csr, isr));
+
+ btand(~ZR36057_ICR_GIRQ1, ZR36057_ICR);
+ zoran_reap_stat_com(zr);
+ zoran_feed_stat_com(zr);
+ }
+#endif /* (IRQ_MASK & ZR36057_ISR_GIRQ1) */
+
+#if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
+ if (astat & ZR36057_ISR_CodRepIRQ) {
+ IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n", zr->name));
+ btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
+ }
+#endif /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
+
+#if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
+ if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
+ (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
+ zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
+ zoran_reap_stat_com(zr);
+ zoran_feed_stat_com(zr);
+ wake_up_interruptible(&zr->jpg_capq);
+ }
+#endif /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
+
+ count++;
+ if (count > 10) {
+ printk(KERN_WARNING "%s: irq loop %d\n", zr->name, count);
+ if (count > 20) {
+ btwrite(0, ZR36057_ICR);
+ printk(KERN_ERR "%s: IRQ lockup, cleared int mask\n", zr->name);
+ break;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&zr->lock, flags);
+}
+
+/* Check a zoran_params struct for correctness, insert default params */
+
+static int zoran_check_params(struct zoran *zr, struct zoran_params *params)
+{
+ int err = 0, err0 = 0;
+
+ /* insert constant params */
+
+ params->major_version = MAJOR_VERSION;
+ params->minor_version = MINOR_VERSION;
+
+ /* Check input and norm */
+
+ if (params->input != 0 && params->input != 1) {
+ err++;
+ }
+ if (params->norm != VIDEO_MODE_PAL && params->norm != VIDEO_MODE_NTSC) {
+ err++;
+ }
+ /* Check decimation, set default values for decimation = 1, 2, 4 */
+
+ switch (params->decimation) {
+ case 1:
+
+ params->HorDcm = 1;
+ params->VerDcm = 1;
+ params->TmpDcm = 1;
+ params->field_per_buff = 2;
+
+ params->img_x = 0;
+ params->img_y = 0;
+ params->img_width = 720;
+ params->img_height = tvnorms[params->norm].Ha / 2;
+ break;
+
+ case 2:
+
+ params->HorDcm = 2;
+ params->VerDcm = 1;
+ params->TmpDcm = 2;
+ params->field_per_buff = 1;
+
+ params->img_x = 8;
+ params->img_y = 0;
+ params->img_width = 704;
+ params->img_height = tvnorms[params->norm].Ha / 2;
+ break;
+
+ case 4:
+
+ params->HorDcm = 4;
+ params->VerDcm = 2;
+ params->TmpDcm = 2;
+ params->field_per_buff = 1;
+
+ params->img_x = 8;
+ params->img_y = 0;
+ params->img_width = 704;
+ params->img_height = tvnorms[params->norm].Ha / 2;
+ break;
+
+ case 0:
+
+ /* We have to check the data the user has set */
+
+ if (params->HorDcm != 1 && params->HorDcm != 2 && params->HorDcm != 4)
+ err0++;
+ if (params->VerDcm != 1 && params->VerDcm != 2)
+ err0++;
+ if (params->TmpDcm != 1 && params->TmpDcm != 2)
+ err0++;
+ if (params->field_per_buff != 1 && params->field_per_buff != 2)
+ err0++;
+
+ if (params->img_x < 0)
+ err0++;
+ if (params->img_y < 0)
+ err0++;
+ if (params->img_width < 0)
+ err0++;
+ if (params->img_height < 0)
+ err0++;
+ if (params->img_x + params->img_width > 720)
+ err0++;
+ if (params->img_y + params->img_height > tvnorms[params->norm].Ha / 2)
+ err0++;
+ if (params->img_width % (16 * params->HorDcm) != 0)
+ err0++;
+ if (params->img_height % (8 * params->VerDcm) != 0)
+ err0++;
+
+ if (err0) {
+ err++;
+ }
+ break;
+
+ default:
+ err++;
+ break;
+ }
+
+ if (params->quality > 100)
+ params->quality = 100;
+ if (params->quality < 5)
+ params->quality = 5;
+
+ if (params->APPn < 0)
+ params->APPn = 0;
+ if (params->APPn > 15)
+ params->APPn = 15;
+ if (params->APP_len < 0)
+ params->APP_len = 0;
+ if (params->APP_len > 60)
+ params->APP_len = 60;
+ if (params->COM_len < 0)
+ params->COM_len = 0;
+ if (params->COM_len > 60)
+ params->COM_len = 60;
+
+ if (err)
+ return -EINVAL;
+
+ return 0;
+
+}
+static void zoran_open_init_params(struct zoran *zr)
+{
+ int i;
+
+ /* Per default, map the V4L Buffers */
+
+ zr->map_mjpeg_buffers = 0;
+
+ /* User must explicitly set a window */
+
+ zr->window_set = 0;
+
+ zr->window.x = 0;
+ zr->window.y = 0;
+ zr->window.width = 0;
+ zr->window.height = 0;
+ zr->window.chromakey = 0;
+ zr->window.flags = 0;
+ zr->window.clips = NULL;
+ zr->window.clipcount = 0;
+
+ zr->video_interlace = 0;
+
+ zr->v4l_memgrab_active = 0;
+ zr->v4l_overlay_active = 0;
+
+ zr->v4l_grab_frame = NO_GRAB_ACTIVE;
+ zr->v4l_grab_seq = 0;
+
+ zr->gwidth = 0;
+ zr->gheight = 0;
+ zr->gformat = 0;
+ zr->gbpl = 0;
+
+ /* DMA ring stuff for V4L */
+
+ zr->v4l_pend_tail = 0;
+ zr->v4l_pend_head = 0;
+ for (i = 0; i < v4l_nbufs; i++) {
+ zr->v4l_gbuf[i].state = BUZ_STATE_USER; /* nothing going on */
+ }
+
+ /* Set necessary params and call zoran_check_params to set the defaults */
+
+ zr->params.decimation = 1;
+
+ zr->params.quality = 50; /* default compression factor 8 */
+ zr->params.odd_even = 1;
+
+ zr->params.APPn = 0;
+ zr->params.APP_len = 0; /* No APPn marker */
+ for (i = 0; i < 60; i++)
+ zr->params.APP_data[i] = 0;
+
+ zr->params.COM_len = 0; /* No COM marker */
+ for (i = 0; i < 60; i++)
+ zr->params.COM_data[i] = 0;
+
+ zr->params.VFIFO_FB = 0;
+
+ memset(zr->params.reserved, 0, sizeof(zr->params.reserved));
+
+ zr->params.jpeg_markers = JPEG_MARKER_DHT | JPEG_MARKER_DQT;
+
+ i = zoran_check_params(zr, &zr->params);
+ if (i)
+ printk(KERN_ERR "%s: zoran_open_init_params internal error\n", zr->name);
+}
+
+/*
+ * Open a buz card. Right now the flags stuff is just playing
+ */
+
+static int zoran_open(struct video_device *dev, int flags)
+{
+ struct zoran *zr = (struct zoran *) dev;
+
+ DEBUG(printk(KERN_INFO ": zoran_open\n"));
+
+ switch (flags) {
+
+ case 0:
+ if (zr->user)
+ return -EBUSY;
+ zr->user++;
+
+ if (v4l_fbuffer_alloc(zr) < 0) {
+ zr->user--;
+ return -ENOMEM;
+ }
+ /* default setup */
+
+ zoran_open_init_params(zr);
+
+ zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+
+ btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
+
+ btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
+
+ break;
+
+ default:
+ return -EBUSY;
+
+ }
+ MOD_INC_USE_COUNT;
+ return 0;
+}
+
+static void zoran_close(struct video_device *dev)
+{
+ struct zoran *zr = (struct zoran *) dev;
+
+ DEBUG(printk(KERN_INFO ": zoran_close\n"));
+
+ /* disable interrupts */
+ btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
+
+ /* wake up sleeping beauties */
+ wake_up_interruptible(&zr->v4l_capq);
+ wake_up_interruptible(&zr->jpg_capq);
+
+ zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
+ zr36057_set_memgrab(zr, 0);
+ if (zr->v4l_overlay_active)
+ zr36057_overlay(zr, 0);
+
+ zr->user--;
+
+ v4l_fbuffer_free(zr);
+ jpg_fbuffer_free(zr);
+ zr->jpg_nbufs = 0;
+
+ MOD_DEC_USE_COUNT;
+ DEBUG(printk(KERN_INFO ": zoran_close done\n"));
+}
+
+
+static long zoran_read(struct video_device *dev, char *buf, unsigned long count, int nonblock)
+{
+ return -EINVAL;
+}
+
+static long zoran_write(struct video_device *dev, const char *buf, unsigned long count, int nonblock)
+{
+ return -EINVAL;
+}
+
+/*
+ * ioctl routine
+ */
+
+
+static int zoran_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
+{
+ struct zoran *zr = (struct zoran *) dev;
+
+ switch (cmd) {
+
+ case VIDIOCGCAP:
+ {
+ struct video_capability b;
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCGCAP\n"));
+ strncpy(b.name, zr->video_dev.name, sizeof(b.name));
+ b.type = VID_TYPE_CAPTURE |
+ VID_TYPE_OVERLAY |
+ VID_TYPE_CLIPPING |
+ VID_TYPE_FRAMERAM |
+ VID_TYPE_SCALES;
+ /* theoretically we could also flag VID_TYPE_SUBCAPTURE
+ but this is not even implemented in the BTTV driver */
+
+ b.channels = 2; /* composite, svhs */
+ b.audios = 0;
+ b.maxwidth = BUZ_MAX_WIDTH;
+ b.maxheight = BUZ_MAX_HEIGHT;
+ b.minwidth = BUZ_MIN_WIDTH;
+ b.minheight = BUZ_MIN_HEIGHT;
+ if (copy_to_user(arg, &b, sizeof(b))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ case VIDIOCGCHAN:
+ {
+ struct video_channel v;
+
+ if (copy_from_user(&v, arg, sizeof(v))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCGCHAN for channel %d\n", v.channel));
+ switch (v.channel) {
+ case 0:
+ strcpy(v.name, "Composite");
+ break;
+ case 1:
+ strcpy(v.name, "SVHS");
+ break;
+ default:
+ return -EINVAL;
+ }
+ v.tuners = 0;
+ v.flags = 0;
+ v.type = VIDEO_TYPE_CAMERA;
+ v.norm = zr->params.norm;
+ if (copy_to_user(arg, &v, sizeof(v))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ /* RJ: the documentation at http://roadrunner.swansea.linux.org.uk/v4lapi.shtml says:
+
+ * "The VIDIOCSCHAN ioctl takes an integer argument and switches the capture to this input."
+ * ^^^^^^^
+ * The famos BTTV driver has it implemented with a struct video_channel argument
+ * and we follow it for compatibility reasons
+ *
+ * BTW: this is the only way the user can set the norm!
+ */
+
+ case VIDIOCSCHAN:
+ {
+ struct video_channel v;
+ int input;
+ int on, res;
+
+ if (copy_from_user(&v, arg, sizeof(v))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCSCHAN: channel=%d, norm=%d\n", v.channel, v.norm));
+ switch (v.channel) {
+ case 0:
+ input = 3;
+ break;
+ case 1:
+ input = 7;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (v.norm != VIDEO_MODE_PAL
+ && v.norm != VIDEO_MODE_NTSC) {
+ return -EINVAL;
+ }
+ zr->params.norm = v.norm;
+ zr->params.input = v.channel;
+
+ /* We switch overlay off and on since a change in the norm
+ needs different VFE settings */
+
+ on = zr->v4l_overlay_active && !zr->v4l_memgrab_active;
+ if (on)
+ zr36057_overlay(zr, 0);
+
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_NORM, &zr->params.norm);
+
+ if (on)
+ zr36057_overlay(zr, 1);
+
+ /* Make sure the changes come into effect */
+ res = wait_grab_pending(zr);
+ if (res)
+ return res;
+
+ return 0;
+ }
+
+ case VIDIOCGTUNER:
+ case VIDIOCSTUNER:
+ return -EINVAL;
+
+ case VIDIOCGPICT:
+ {
+ struct video_picture p = zr->picture;
+
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCGPICT\n"));
+ p.depth = zr->buffer.depth;
+ switch (zr->buffer.depth) {
+ case 15:
+ p.palette = VIDEO_PALETTE_RGB555;
+ break;
+
+ case 16:
+ p.palette = VIDEO_PALETTE_RGB565;
+ break;
+
+ case 24:
+ p.palette = VIDEO_PALETTE_RGB24;
+ break;
+
+ case 32:
+ p.palette = VIDEO_PALETTE_RGB32;
+ break;
+ }
+
+ if (copy_to_user(arg, &p, sizeof(p))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ case VIDIOCSPICT:
+ {
+ struct video_picture p;
+
+ if (copy_from_user(&p, arg, sizeof(p))) {
+ return -EFAULT;
+ }
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_PICTURE, &p);
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCSPICT bri=%d hue=%d col=%d con=%d dep=%d pal=%d\n",
+ p.brightness, p.hue, p.colour, p.contrast, p.depth, p.palette));
+ /* The depth and palette values have no meaning to us,
+ should we return -EINVAL if they don't fit ? */
+ zr->picture = p;
+ return 0;
+ }
+
+ case VIDIOCCAPTURE:
+ {
+ int v, res;
+
+ if (copy_from_user(&v, arg, sizeof(v))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCCAPTURE: %d\n", v));
+ /* If there is nothing to do, return immediatly */
+
+ if ((v && zr->v4l_overlay_active) || (!v && !zr->v4l_overlay_active))
+ return 0;
+
+ if (v == 0) {
+ zr->v4l_overlay_active = 0;
+ if (!zr->v4l_memgrab_active)
+ zr36057_overlay(zr, 0);
+ /* When a grab is running, the video simply won't be switched on any more */
+ } else {
+ if (!zr->buffer_set || !zr->window_set) {
+ return -EINVAL;
+ }
+ zr->v4l_overlay_active = 1;
+ if (!zr->v4l_memgrab_active)
+ zr36057_overlay(zr, 1);
+ /* When a grab is running, the video will be switched on when grab is finished */
+ }
+ /* Make sure the changes come into effect */
+ res = wait_grab_pending(zr);
+ if (res)
+ return res;
+ return 0;
+ }
+
+ case VIDIOCGWIN:
+ {
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCGWIN\n"));
+ if (copy_to_user(arg, &zr->window, sizeof(zr->window))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ case VIDIOCSWIN:
+ {
+ struct video_clip *vcp;
+ struct video_window vw;
+ int on, end, res;
+
+ if (copy_from_user(&vw, arg, sizeof(vw))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCSWIN: x=%d y=%d w=%d h=%d clipcount=%d\n", vw.x, vw.y, vw.width, vw.height, vw.clipcount));
+ if (!zr->buffer_set) {
+ return -EINVAL;
+ }
+ /*
+ * The video front end needs 4-byte alinged line sizes, we correct that
+ * silently here if necessary
+ */
+
+ if (zr->buffer.depth == 15 || zr->buffer.depth == 16) {
+ end = (vw.x + vw.width) & ~1; /* round down */
+ vw.x = (vw.x + 1) & ~1; /* round up */
+ vw.width = end - vw.x;
+ }
+ if (zr->buffer.depth == 24) {
+ end = (vw.x + vw.width) & ~3; /* round down */
+ vw.x = (vw.x + 3) & ~3; /* round up */
+ vw.width = end - vw.x;
+ }
+#if 0
+ // At least xawtv seems to care about the following - just leave it away
+ /*
+ * Also corrected silently (as long as window fits at all):
+ * video not fitting the screen
+ */
+#if 0
+ if (vw.x < 0 || vw.y < 0 || vw.x + vw.width > zr->buffer.width ||
+ vw.y + vw.height > zr->buffer.height) {
+ printk(BUZ_ERR ": VIDIOCSWIN: window does not fit frame buffer: %dx%d+%d*%d\n",
+ vw.width, vw.height, vw.x, vw.y);
+ return -EINVAL;
+ }
+#else
+ if (vw.x < 0)
+ vw.x = 0;
+ if (vw.y < 0)
+ vw.y = 0;
+ if (vw.x + vw.width > zr->buffer.width)
+ vw.width = zr->buffer.width - vw.x;
+ if (vw.y + vw.height > zr->buffer.height)
+ vw.height = zr->buffer.height - vw.y;
+#endif
+#endif
+
+ /* Check for vaild parameters */
+ if (vw.width < BUZ_MIN_WIDTH || vw.height < BUZ_MIN_HEIGHT ||
+ vw.width > BUZ_MAX_WIDTH || vw.height > BUZ_MAX_HEIGHT) {
+ return -EINVAL;
+ }
+#ifdef XAWTV_HACK
+ if (vw.width > 720)
+ vw.width = 720;
+#endif
+
+ zr->window.x = vw.x;
+ zr->window.y = vw.y;
+ zr->window.width = vw.width;
+ zr->window.height = vw.height;
+ zr->window.chromakey = 0;
+ zr->window.flags = 0; // RJ: Is this intended for interlace on/off ?
+
+ zr->window.clips = NULL;
+ zr->window.clipcount = vw.clipcount;
+
+ /*
+ * If an overlay is running, we have to switch it off
+ * and switch it on again in order to get the new settings in effect.
+ *
+ * We also want to avoid that the overlay mask is written
+ * when an overlay is running.
+ */
+
+ on = zr->v4l_overlay_active && !zr->v4l_memgrab_active;
+ if (on)
+ zr36057_overlay(zr, 0);
+
+ /*
+ * Write the overlay mask if clips are wanted.
+ */
+ if (vw.clipcount) {
+ vcp = vmalloc(sizeof(struct video_clip) * (vw.clipcount + 4));
+ if (vcp == NULL) {
+ return -ENOMEM;
+ }
+ if (copy_from_user(vcp, vw.clips, sizeof(struct video_clip) * vw.clipcount)) {
+ vfree(vcp);
+ return -EFAULT;
+ }
+ write_overlay_mask(zr, vcp, vw.clipcount);
+ vfree(vcp);
+ }
+ if (on)
+ zr36057_overlay(zr, 1);
+ zr->window_set = 1;
+
+ /* Make sure the changes come into effect */
+ res = wait_grab_pending(zr);
+ if (res)
+ return res;
+
+ return 0;
+ }
+
+ case VIDIOCGFBUF:
+ {
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCGFBUF\n"));
+ if (copy_to_user(arg, &zr->buffer, sizeof(zr->buffer))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ case VIDIOCSFBUF:
+ {
+ struct video_buffer v;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (copy_from_user(&v, arg, sizeof(v)))
+ return -EFAULT;
+
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCSFBUF: base=0x%x w=%d h=%d depth=%d bpl=%d\n", (u32) v.base, v.width, v.height, v.depth, v.bytesperline));
+ if (zr->v4l_overlay_active) {
+ /* Has the user gotten crazy ... ? */
+ return -EINVAL;
+ }
+ if (v.depth != 15
+ && v.depth != 16
+ && v.depth != 24
+ && v.depth != 32) {
+ return -EINVAL;
+ }
+ if (v.height <= 0 || v.width <= 0 || v.bytesperline <= 0) {
+ return -EINVAL;
+ }
+ if (v.bytesperline & 3) {
+ return -EINVAL;
+ }
+ if (v.base) {
+ zr->buffer.base = (void *) ((unsigned long) v.base & ~3);
+ }
+ zr->buffer.height = v.height;
+ zr->buffer.width = v.width;
+ zr->buffer.depth = v.depth;
+ zr->buffer.bytesperline = v.bytesperline;
+
+ if (zr->buffer.base)
+ zr->buffer_set = 1;
+ zr->window_set = 0; /* The user should set new window parameters */
+ return 0;
+ }
+
+ /* RJ: what is VIDIOCKEY intended to do ??? */
+
+ case VIDIOCGFREQ:
+ case VIDIOCSFREQ:
+ case VIDIOCGAUDIO:
+ case VIDIOCSAUDIO:
+ return -EINVAL;
+
+ case VIDIOCSYNC:
+ {
+ int v;
+
+ if (copy_from_user(&v, arg, sizeof(v))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCSYNC %d\n", v));
+ return v4l_sync(zr, v);
+ }
+
+ case VIDIOCMCAPTURE:
+ {
+ struct video_mmap vm;
+
+ if (copy_from_user((void *) &vm, (void *) arg, sizeof(vm))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCMCAPTURE frame=%d geom=%dx%d fmt=%d\n",
+ vm.frame, vm.height, vm.width, vm.format));
+ return v4l_grab(zr, &vm);
+ }
+
+ case VIDIOCGMBUF:
+ {
+ struct video_mbuf vm;
+ int i;
+
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCGMBUF\n"));
+
+ vm.size = v4l_nbufs * v4l_bufsize;
+ vm.frames = v4l_nbufs;
+ for (i = 0; i < v4l_nbufs; i++) {
+ vm.offsets[i] = i * v4l_bufsize;
+ }
+
+ /* The next mmap will map the V4L buffers */
+ zr->map_mjpeg_buffers = 0;
+
+ if (copy_to_user(arg, &vm, sizeof(vm))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ case VIDIOCGUNIT:
+ {
+ struct video_unit vu;
+
+ IOCTL_DEBUG(printk("buz ioctl VIDIOCGUNIT\n"));
+ vu.video = zr->video_dev.minor;
+ vu.vbi = VIDEO_NO_UNIT;
+ vu.radio = VIDEO_NO_UNIT;
+ vu.audio = VIDEO_NO_UNIT;
+ vu.teletext = VIDEO_NO_UNIT;
+ if (copy_to_user(arg, &vu, sizeof(vu)))
+ return -EFAULT;
+ return 0;
+ }
+
+ /*
+ * RJ: In principal we could support subcaptures for V4L grabbing.
+ * Not even the famous BTTV driver has them, however.
+ * If there should be a strong demand, one could consider
+ * to implement them.
+ */
+ case VIDIOCGCAPTURE:
+ case VIDIOCSCAPTURE:
+ return -EINVAL;
+
+ case BUZIOC_G_PARAMS:
+ {
+ IOCTL_DEBUG(printk("buz ioctl BUZIOC_G_PARAMS\n"));
+ if (copy_to_user(arg, &(zr->params), sizeof(zr->params)))
+ return -EFAULT;
+ return 0;
+ }
+
+ case BUZIOC_S_PARAMS:
+ {
+ struct zoran_params bp;
+ int input, on;
+
+ if (zr->codec_mode != BUZ_MODE_IDLE) {
+ return -EINVAL;
+ }
+ if (copy_from_user(&bp, arg, sizeof(bp))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl BUZIOC_S_PARAMS\n"));
+
+ /* Check the params first before overwriting our internal values */
+
+ if (zoran_check_params(zr, &bp))
+ return -EINVAL;
+
+ zr->params = bp;
+
+ /* Make changes of input and norm go into effect immediatly */
+
+ /* We switch overlay off and on since a change in the norm
+ needs different VFE settings */
+
+ on = zr->v4l_overlay_active && !zr->v4l_memgrab_active;
+ if (on)
+ zr36057_overlay(zr, 0);
+
+ input = zr->params.input == 0 ? 3 : 7;
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_NORM, &zr->params.norm);
+
+ if (on)
+ zr36057_overlay(zr, 1);
+
+ if (copy_to_user(arg, &bp, sizeof(bp))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ case BUZIOC_REQBUFS:
+ {
+ struct zoran_requestbuffers br;
+
+ if (zr->jpg_buffers_allocated) {
+ return -EINVAL;
+ }
+ if (copy_from_user(&br, arg, sizeof(br))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl BUZIOC_REQBUFS count = %lu size=%lu\n",
+ br.count, br.size));
+ /* Enforce reasonable lower and upper limits */
+ if (br.count < 4)
+ br.count = 4; /* Could be choosen smaller */
+ if (br.count > BUZ_MAX_FRAME)
+ br.count = BUZ_MAX_FRAME;
+ br.size = PAGE_ALIGN(br.size);
+ if (br.size < 8192)
+ br.size = 8192; /* Arbitrary */
+ /* br.size is limited by 1 page for the stat_com tables to a Maximum of 2 MB */
+ if (br.size > (512 * 1024))
+ br.size = (512 * 1024); /* 512 K should be enough */
+ if (zr->need_contiguous && br.size > MAX_KMALLOC_MEM)
+ br.size = MAX_KMALLOC_MEM;
+
+ zr->jpg_nbufs = br.count;
+ zr->jpg_bufsize = br.size;
+
+ if (jpg_fbuffer_alloc(zr))
+ return -ENOMEM;
+
+ /* The next mmap will map the MJPEG buffers */
+ zr->map_mjpeg_buffers = 1;
+
+ if (copy_to_user(arg, &br, sizeof(br))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ case BUZIOC_QBUF_CAPT:
+ {
+ int nb;
+
+ if (copy_from_user((void *) &nb, (void *) arg, sizeof(int))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl BUZIOC_QBUF_CAPT %d\n", nb));
+ return jpg_qbuf(zr, nb, BUZ_MODE_MOTION_COMPRESS);
+ }
+
+ case BUZIOC_QBUF_PLAY:
+ {
+ int nb;
+
+ if (copy_from_user((void *) &nb, (void *) arg, sizeof(int))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl BUZIOC_QBUF_PLAY %d\n", nb));
+ return jpg_qbuf(zr, nb, BUZ_MODE_MOTION_DECOMPRESS);
+ }
+
+ case BUZIOC_SYNC:
+ {
+ struct zoran_sync bs;
+ int res;
+
+ IOCTL_DEBUG(printk("buz ioctl BUZIOC_SYNC\n"));
+ res = jpg_sync(zr, &bs);
+ if (copy_to_user(arg, &bs, sizeof(bs))) {
+ return -EFAULT;
+ }
+ return res;
+ }
+
+ case BUZIOC_G_STATUS:
+ {
+ struct zoran_status bs;
+ int norm, input, status;
+
+ if (zr->codec_mode != BUZ_MODE_IDLE) {
+ return -EINVAL;
+ }
+ if (copy_from_user(&bs, arg, sizeof(bs))) {
+ return -EFAULT;
+ }
+ IOCTL_DEBUG(printk("buz ioctl BUZIOC_G_STATUS\n"));
+ switch (bs.input) {
+ case 0:
+ input = 3;
+ break;
+ case 1:
+ input = 7;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Set video norm to VIDEO_MODE_AUTO */
+
+ norm = VIDEO_MODE_AUTO;
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &norm);
+
+ /* sleep 1 second */
+
+ schedule_timeout(HZ);
+
+ /* Get status of video decoder */
+
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_GET_STATUS, &status);
+ bs.signal = (status & DECODER_STATUS_GOOD) ? 1 : 0;
+ bs.norm = (status & DECODER_STATUS_NTSC) ? VIDEO_MODE_NTSC : VIDEO_MODE_PAL;
+ bs.color = (status & DECODER_STATUS_COLOR) ? 1 : 0;
+
+ /* restore previous input and norm */
+ input = zr->params.input == 0 ? 3 : 7;
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &input);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+
+ if (copy_to_user(arg, &bs, sizeof(bs))) {
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+ default:
+ return -ENOIOCTLCMD;
+
+ }
+ return 0;
+}
+
+
+/*
+ * This maps the buffers to user space.
+ *
+ * Depending on the state of zr->map_mjpeg_buffers
+ * the V4L or the MJPEG buffers are mapped
+ *
+ */
+
+static int zoran_mmap(struct video_device *dev, const char *adr, unsigned long size)
+{
+ struct zoran *zr = (struct zoran *) dev;
+ unsigned long start = (unsigned long) adr;
+ unsigned long page, pos, todo, fraglen;
+ int i, j;
+
+ if (zr->map_mjpeg_buffers) {
+ /* Map the MJPEG buffers */
+
+ if (!zr->jpg_buffers_allocated) {
+ return -ENOMEM;
+ }
+ if (size > zr->jpg_nbufs * zr->jpg_bufsize) {
+ return -EINVAL;
+ }
+
+ for (i = 0; i < zr->jpg_nbufs; i++) {
+ for (j = 0; j < zr->jpg_bufsize / PAGE_SIZE; j++) {
+ fraglen = (zr->jpg_gbuf[i].frag_tab[2 * j + 1] & ~1) << 1;
+ todo = size;
+ if (todo > fraglen)
+ todo = fraglen;
+ pos = (unsigned long) zr->jpg_gbuf[i].frag_tab[2 * j];
+ page = virt_to_phys(bus_to_virt(pos)); /* should just be pos on i386 */
+ if (remap_page_range(start, page, todo, PAGE_SHARED)) {
+ printk(KERN_ERR "%s: zoran_mmap(V4L): remap_page_range failed\n", zr->name);
+ return -EAGAIN;
+ }
+ size -= todo;
+ start += todo;
+ if (size == 0)
+ break;
+ if (zr->jpg_gbuf[i].frag_tab[2 * j + 1] & 1)
+ break; /* was last fragment */
+ }
+ if (size == 0)
+ break;
+ }
+ } else {
+ /* Map the V4L buffers */
+
+ if (size > v4l_nbufs * v4l_bufsize) {
+ return -EINVAL;
+ }
+
+ for (i = 0; i < v4l_nbufs; i++) {
+ todo = size;
+ if (todo > v4l_bufsize)
+ todo = v4l_bufsize;
+ page = zr->v4l_gbuf[i].fbuffer_phys;
+ DEBUG(printk("V4L remap page range %d 0x%x %d to 0x%x\n", i, page, todo, start));
+ if (remap_page_range(start, page, todo, PAGE_SHARED)) {
+ printk(KERN_ERR "%s: zoran_mmap(V4L): remap_page_range failed\n", zr->name);
+ return -EAGAIN;
+ }
+ size -= todo;
+ start += todo;
+ if (size == 0)
+ break;
+ }
+ }
+ return 0;
+}
+
+static int zoran_init_done(struct video_device *dev)
+{
+ return 0;
+}
+
+static struct video_device zoran_template =
+{
+ BUZ_NAME,
+ VID_TYPE_CAPTURE | VID_TYPE_OVERLAY | VID_TYPE_CLIPPING | VID_TYPE_FRAMERAM |
+ VID_TYPE_SCALES | VID_TYPE_SUBCAPTURE,
+ VID_HARDWARE_BT848, /* Not true, but the buz is not yet in the list */
+ zoran_open,
+ zoran_close,
+ zoran_read,
+ zoran_write,
+ NULL,
+ zoran_ioctl,
+ zoran_mmap,
+ zoran_init_done,
+ NULL,
+ 0,
+ 0
+};
+
+static int zr36057_init(int i)
+{
+ struct zoran *zr = &zoran[i];
+ unsigned long mem;
+ unsigned mem_needed;
+ int j;
+ int rev;
+
+ /* reset zr36057 */
+ btwrite(0, ZR36057_SPGPPCR);
+ mdelay(10);
+
+ /* default setup of all parameters which will persist beetween opens */
+
+ zr->user = 0;
+
+ init_waitqueue_head(&zr->v4l_capq);
+ init_waitqueue_head(&zr->jpg_capq);
+
+ zr->map_mjpeg_buffers = 0; /* Map V4L buffers by default */
+
+ zr->jpg_nbufs = 0;
+ zr->jpg_bufsize = 0;
+ zr->jpg_buffers_allocated = 0;
+
+ zr->buffer_set = 0; /* Flag if frame buffer has been set */
+ zr->buffer.base = (void *) vidmem;
+ zr->buffer.width = 0;
+ zr->buffer.height = 0;
+ zr->buffer.depth = 0;
+ zr->buffer.bytesperline = 0;
+
+ zr->params.norm = default_norm ? 1 : 0; /* Avoid nonsense settings from user */
+ zr->params.input = default_input ? 1 : 0; /* Avoid nonsense settings from user */
+ zr->video_interlace = 0;
+
+ /* Should the following be reset at every open ? */
+
+ zr->picture.colour = 32768;
+ zr->picture.brightness = 32768;
+ zr->picture.hue = 32768;
+ zr->picture.contrast = 32768;
+ zr->picture.whiteness = 0;
+ zr->picture.depth = 0;
+ zr->picture.palette = 0;
+
+ for (j = 0; j < VIDEO_MAX_FRAME; j++) {
+ zr->v4l_gbuf[i].fbuffer = 0;
+ zr->v4l_gbuf[i].fbuffer_phys = 0;
+ zr->v4l_gbuf[i].fbuffer_bus = 0;
+ }
+
+ zr->stat_com = 0;
+
+ /* default setup (will be repeated at every open) */
+
+ zoran_open_init_params(zr);
+
+ /* allocate memory *before* doing anything to the hardware in case allocation fails */
+
+ /* STAT_COM table and overlay mask */
+
+ mem_needed = (BUZ_NUM_STAT_COM + ((BUZ_MAX_WIDTH + 31) / 32) * BUZ_MAX_HEIGHT) * 4;
+ mem = (unsigned long) kmalloc(mem_needed, GFP_KERNEL);
+ if (!mem) {
+ return -ENOMEM;
+ }
+ memset((void *) mem, 0, mem_needed);
+
+ zr->stat_com = (u32 *) mem;
+ for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
+ zr->stat_com[j] = 1; /* mark as unavailable to zr36057 */
+ }
+ zr->overlay_mask = (u32 *) (mem + BUZ_NUM_STAT_COM * 4);
+
+ /* Initialize zr->jpg_gbuf */
+
+ for (j = 0; j < BUZ_MAX_FRAME; j++) {
+ zr->jpg_gbuf[j].frag_tab = 0;
+ zr->jpg_gbuf[j].frag_tab_bus = 0;
+ zr->jpg_gbuf[j].state = BUZ_STATE_USER;
+ zr->jpg_gbuf[j].bs.frame = j;
+ }
+
+ /* take zr36057 out of reset now */
+ btwrite(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
+ mdelay(10);
+
+ /* stop all DMA processes */
+ btwrite(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
+ btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
+ /* assert P_Reset */
+ btwrite(0, ZR36057_JPC);
+
+ switch(zr->board)
+ {
+ case BOARD_BUZ:
+
+ /* set up GPIO direction */
+ btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
+
+ /* Set up guest bus timing - Guests 0..3 Tdur=12, Trec=3 */
+ btwrite((GPIO_MASK << 24) | 0x8888, ZR36057_GPPGCR1);
+ mdelay(10);
+
+ /* reset video decoder */
+
+ GPIO(zr, 0, 0);
+ mdelay(10);
+ GPIO(zr, 0, 1);
+ mdelay(10);
+
+ /* reset JPEG codec */
+ zr36060_sleep(zr, 0);
+ mdelay(10);
+ zr36060_reset(zr);
+ mdelay(10);
+ zr36060_sleep(zr, 1);
+ mdelay(10);
+
+ /* display codec revision */
+ if ((rev=zr36060_read_8(zr, 0x022)) == 0x33) {
+ printk(KERN_INFO "%s: Zoran ZR36060 (rev %d)\n",
+ zr->name, zr36060_read_8(zr, 0x023));
+ } else {
+ printk(KERN_ERR "%s: Zoran ZR36060 not found (Rev=%d)\n", zr->name, rev);
+ kfree((void *) zr->stat_com);
+ return -1;
+ }
+ break;
+
+ case BOARD_LML33:
+// btwrite(btread(ZR36057_SPGPPCR)&~ZR36057_SPGPPCR_SoftReset , ZR36057_SPGPPCR);
+// udelay(100);
+// btwrite(btread(ZR36057_SPGPPCR)|ZR36057_SPGPPCR_SoftReset , ZR36057_SPGPPCR);
+// udelay(1000);
+
+ /*
+ * Set up the GPIO direction
+ */
+ btwrite(btread(ZR36057_SPGPPCR_SoftReset)|0 , ZR36057_SPGPPCR);
+ /* Set up guest bus timing - Guests 0..2 Tdur=12, Trec=3 */
+ btwrite(0xFF00F888, ZR36057_GPPGCR1);
+ mdelay(10);
+ GPIO(zr, 5, 0); /* Analog video bypass */
+ udelay(3000);
+ GPIO(zr, 0, 0); /* Reset 819 */
+ udelay(3000);
+ GPIO(zr, 0, 1); /* 819 back */
+ udelay(3000);
+ /* reset JPEG codec */
+ zr36060_sleep(zr, 0);
+ udelay(3000);
+ zr36060_reset(zr);
+ udelay(3000);
+ zr36060_sleep(zr, 1);
+ udelay(3000);
+
+ /* display codec revision */
+ if ((rev=zr36060_read_8(zr, 0x022)) == 0x33) {
+ printk(KERN_INFO "%s: Zoran ZR36060 (rev %d)\n",
+ zr->name, zr36060_read_8(zr, 0x023));
+ } else {
+ printk(KERN_ERR "%s: Zoran ZR36060 not found (rev=%d)\n", zr->name, rev);
+// kfree((void *) zr->stat_com);
+// return -1;
+ }
+ break;
+ }
+ /* i2c */
+ memcpy(&zr->i2c, &zoran_i2c_bus_template, sizeof(struct i2c_bus));
+ sprintf(zr->i2c.name, "zoran%u%u", zr->id);
+ zr->i2c.data = zr;
+ if (i2c_register_bus(&zr->i2c) < 0) {
+ kfree((void *) zr->stat_com);
+ return -1;
+ }
+ /*
+ * Now add the template and register the device unit.
+ */
+ memcpy(&zr->video_dev, &zoran_template, sizeof(zoran_template));
+ sprintf(zr->video_dev.name, "zoran%u", zr->id);
+ if (video_register_device(&zr->video_dev, VFL_TYPE_GRABBER) < 0) {
+ i2c_unregister_bus(&zr->i2c);
+ kfree((void *) zr->stat_com);
+ return -1;
+ }
+ /* toggle JPEG codec sleep to sync PLL */
+ zr36060_sleep(zr, 1);
+ mdelay(10);
+ zr36060_sleep(zr, 0);
+ mdelay(10);
+
+ /* Enable bus-mastering */
+ pci_set_master(zr->pci_dev);
+
+ j = zr->params.input == 0 ? 3 : 7;
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_INPUT, &j);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEODECODER, DECODER_SET_NORM, &zr->params.norm);
+ i2c_control_device(&zr->i2c, I2C_DRIVERID_VIDEOENCODER, ENCODER_SET_NORM, &zr->params.norm);
+
+ /* set individual interrupt enables (without GIRQ0)
+ but don't global enable until zoran_open() */
+
+ btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ0, ZR36057_ICR);
+
+ if(request_irq(zr->pci_dev->irq, zoran_irq,
+ SA_SHIRQ | SA_INTERRUPT, zr->name, (void *) zr)<0)
+ {
+ printk(KERN_ERR "%s: Can't assign irq.\n", zr->name);
+ video_unregister_device(&zr->video_dev);
+ i2c_unregister_bus(&zr->i2c);
+ kfree((void *) zr->stat_com);
+ return -1;
+ }
+ zr->initialized = 1;
+ return 0;
+}
+
+
+
+static void release_zoran(void)
+{
+ u8 command;
+ int i;
+ struct zoran *zr;
+
+ for (i = 0; i < zoran_num; i++) {
+ zr = &zoran[i];
+
+ if (!zr->initialized)
+ continue;
+
+ /* unregister i2c_bus */
+ i2c_unregister_bus((&zr->i2c));
+
+ /* disable PCI bus-mastering */
+ pci_read_config_byte(zr->pci_dev, PCI_COMMAND, &command);
+ command &= ~PCI_COMMAND_MASTER;
+ pci_write_config_byte(zr->pci_dev, PCI_COMMAND, command);
+
+ /* put chip into reset */
+ btwrite(0, ZR36057_SPGPPCR);
+
+ free_irq(zr->pci_dev->irq, zr);
+
+ /* unmap and free memory */
+
+ kfree((void *) zr->stat_com);
+
+ iounmap(zr->zr36057_mem);
+
+ video_unregister_device(&zr->video_dev);
+ }
+}
+
+/*
+ * Scan for a Buz card (actually for the PCI controller ZR36057),
+ * request the irq and map the io memory
+ */
+
+static int find_zr36057(void)
+{
+ unsigned char latency;
+ struct zoran *zr;
+ struct pci_dev *dev = NULL;
+
+ zoran_num = 0;
+
+ while (zoran_num < BUZ_MAX
+ && (dev = pci_find_device(PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36057, dev)) != NULL) {
+ zr = &zoran[zoran_num];
+ zr->pci_dev = dev;
+ zr->zr36057_mem = NULL;
+ zr->id = zoran_num;
+ sprintf(zr->name, "zoran%u", zr->id);
+
+ spin_lock_init(&zr->lock);
+
+ zr->zr36057_adr = zr->pci_dev->base_address[0] & PCI_BASE_ADDRESS_MEM_MASK;
+ pci_read_config_byte(zr->pci_dev, PCI_CLASS_REVISION, &zr->revision);
+ if (zr->revision < 2) {
+ printk(KERN_INFO "%s: Zoran ZR36057 (rev %d) irq: %d, memory: 0x%08x.\n",
+ zr->name, zr->revision, zr->pci_dev->irq, zr->zr36057_adr);
+ } else {
+ unsigned short ss_vendor_id, ss_id;
+
+ pci_read_config_word(zr->pci_dev, PCI_SUBSYSTEM_VENDOR_ID, &ss_vendor_id);
+ pci_read_config_word(zr->pci_dev, PCI_SUBSYSTEM_ID, &ss_id);
+ printk(KERN_INFO "%s: Zoran ZR36067 (rev %d) irq: %d, memory: 0x%08x\n",
+ zr->name, zr->revision, zr->pci_dev->irq, zr->zr36057_adr);
+ printk(KERN_INFO "%s: subsystem vendor=0x%04x id=0x%04x\n",
+ zr->name, ss_vendor_id, ss_id);
+ if(ss_vendor_id==0xFF10 && ss_id == 0xDE41)
+ {
+ zr->board = BOARD_LML33;
+ printk(KERN_INFO "%s: LML33 detected.\n", zr->name);
+ }
+ }
+
+ zr->zr36057_mem = ioremap(zr->zr36057_adr, 0x1000);
+
+ /* set PCI latency timer */
+ pci_read_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, &latency);
+ if (latency != 48) {
+ printk(KERN_INFO "%s: Changing PCI latency from %d to 48.\n", zr->name, latency);
+ latency = 48;
+ pci_write_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, latency);
+ }
+ zoran_num++;
+ }
+ if (zoran_num == 0)
+ printk(KERN_INFO "zoran: no cards found.\n");
+
+ return zoran_num;
+}
+
+#include "chipsets.h"
+
+static void handle_chipset(void)
+{
+ int index;
+ struct pci_dev *dev = NULL;
+
+ for (index = 0; index < sizeof(black) / sizeof(black[0]); index++) {
+ if ((dev = pci_find_device(black[index].vendor, black[index].device, dev)) != NULL) {
+ printk(KERN_INFO ": Host bridge: %s, ", black[index].name);
+ switch (black[index].action) {
+
+ case TRITON:
+ printk("enabling Triton support.\n");
+ triton = 1;
+ break;
+
+ case NATOMA:
+ printk("enabling Natoma workaround.\n");
+ natoma = 1;
+ break;
+ }
+ }
+ }
+}
+
+#ifdef MODULE
+int init_module(void)
+#else
+int init_zoran_cards(struct video_init *unused)
+#endif
+{
+ int i;
+
+
+ printk(KERN_INFO "Zoran driver 1.00 (c) 1999 Rainer Johanni, Dave Perks.\n");
+
+ /* Look for Buz cards */
+
+ if (find_zr36057() <= 0) {
+ return -EIO;
+ }
+ printk(KERN_INFO"zoran: %d zoran card(s) found\n", zoran_num);
+
+ if (zoran_num == 0)
+ return -ENXIO;
+
+
+ /* check the parameters we have been given, adjust if necessary */
+
+ if (v4l_nbufs < 0)
+ v4l_nbufs = 0;
+ if (v4l_nbufs > VIDEO_MAX_FRAME)
+ v4l_nbufs = VIDEO_MAX_FRAME;
+ /* The user specfies the in KB, we want them in byte (and page aligned) */
+ v4l_bufsize = PAGE_ALIGN(v4l_bufsize * 1024);
+ if (v4l_bufsize < 32768)
+ v4l_bufsize = 32768;
+ /* 2 MB is arbitrary but sufficient for the maximum possible images */
+ if (v4l_bufsize > 2048 * 1024)
+ v4l_bufsize = 2048 * 1024;
+
+ printk(KERN_INFO "zoran: using %d V4L buffers of size %d KB\n", v4l_nbufs, v4l_bufsize >> 10);
+
+ /* Use parameter for vidmem or try to find a video card */
+
+ if (vidmem) {
+ printk(KERN_INFO "zoran: Using supplied video memory base address @ 0x%lx\n", vidmem);
+ }
+
+ /* check if we have a Triton or Natome chipset */
+
+ handle_chipset();
+
+ /* take care of Natoma chipset and a revision 1 zr36057 */
+
+ for (i = 0; i < zoran_num; i++) {
+ if (natoma && zoran[i].revision <= 1) {
+ zoran[i].need_contiguous = 1;
+ printk(KERN_INFO "%s: ZR36057/Natome bug, max. buffer size is 128K\n", zoran[i].name);
+ } else {
+ zoran[i].need_contiguous = 0;
+ }
+ }
+
+ /* initialize the Buzs */
+
+ /* We have to know which ones must be released if an error occurs */
+ for (i = 0; i < zoran_num; i++)
+ zoran[i].initialized = 0;
+
+ for (i = 0; i < zoran_num; i++) {
+ if (zr36057_init(i) < 0) {
+ release_zoran();
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+
+
+#ifdef MODULE
+
+void cleanup_module(void)
+{
+ release_zoran();
+}
+
+#endif
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)