aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/planb.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/planb.c')
-rw-r--r--drivers/media/video/planb.c2303
1 files changed, 2303 insertions, 0 deletions
diff --git a/drivers/media/video/planb.c b/drivers/media/video/planb.c
new file mode 100644
index 000000000000..b19c33434eaf
--- /dev/null
+++ b/drivers/media/video/planb.c
@@ -0,0 +1,2303 @@
+/*
+ planb - PlanB frame grabber driver
+
+ PlanB is used in the 7x00/8x00 series of PowerMacintosh
+ Computers as video input DMA controller.
+
+ Copyright (C) 1998 Michel Lanners (mlan@cpu.lu)
+
+ Based largely on the bttv driver by Ralph Metzler (rjkm@thp.uni-koeln.de)
+
+ Additional debugging and coding by Takashi Oe (toe@unlserve.unl.edu)
+
+ 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.
+*/
+
+/* $Id: planb.c,v 1.18 1999/05/02 17:36:34 mlan Exp $ */
+
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/videodev.h>
+#include <linux/wait.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/dbdma.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/irq.h>
+#include <asm/semaphore.h>
+
+#include "planb.h"
+#include "saa7196.h"
+
+/* Would you mind for some ugly debugging? */
+#if 0
+#define DEBUG(x...) printk(KERN_DEBUG ## x) /* Debug driver */
+#else
+#define DEBUG(x...) /* Don't debug driver */
+#endif
+
+#if 0
+#define IDEBUG(x...) printk(KERN_DEBUG ## x) /* Debug interrupt part */
+#else
+#define IDEBUG(x...) /* Don't debug interrupt part */
+#endif
+
+/* Ever seen a Mac with more than 1 of these? */
+#define PLANB_MAX 1
+
+static int planb_num;
+static struct planb planbs[PLANB_MAX];
+static volatile struct planb_registers *planb_regs;
+
+static int def_norm = PLANB_DEF_NORM; /* default norm */
+static int video_nr = -1;
+
+MODULE_PARM(def_norm, "i");
+MODULE_PARM_DESC(def_norm, "Default startup norm (0=PAL, 1=NTSC, 2=SECAM)");
+MODULE_PARM(video_nr,"i");
+MODULE_LICENSE("GPL");
+
+
+/* ------------------ PlanB Exported Functions ------------------ */
+static long planb_write(struct video_device *, const char *, unsigned long, int);
+static long planb_read(struct video_device *, char *, unsigned long, int);
+static int planb_open(struct video_device *, int);
+static void planb_close(struct video_device *);
+static int planb_ioctl(struct video_device *, unsigned int, void *);
+static int planb_init_done(struct video_device *);
+static int planb_mmap(struct video_device *, const char *, unsigned long);
+static void planb_irq(int, void *, struct pt_regs *);
+static void release_planb(void);
+int init_planbs(struct video_init *);
+
+/* ------------------ PlanB Internal Functions ------------------ */
+static int planb_prepare_open(struct planb *);
+static void planb_prepare_close(struct planb *);
+static void saa_write_reg(unsigned char, unsigned char);
+static unsigned char saa_status(int, struct planb *);
+static void saa_set(unsigned char, unsigned char, struct planb *);
+static void saa_init_regs(struct planb *);
+static int grabbuf_alloc(struct planb *);
+static int vgrab(struct planb *, struct video_mmap *);
+static void add_clip(struct planb *, struct video_clip *);
+static void fill_cmd_buff(struct planb *);
+static void cmd_buff(struct planb *);
+static volatile struct dbdma_cmd *setup_grab_cmd(int, struct planb *);
+static void overlay_start(struct planb *);
+static void overlay_stop(struct planb *);
+static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *, unsigned short,
+ unsigned int);
+static inline void tab_cmd_store(volatile struct dbdma_cmd *, unsigned int,
+ unsigned int);
+static inline void tab_cmd_gen(volatile struct dbdma_cmd *, unsigned short,
+ unsigned short, unsigned int, unsigned int);
+static int init_planb(struct planb *);
+static int find_planb(void);
+static void planb_pre_capture(int, int, struct planb *);
+static volatile struct dbdma_cmd *cmd_geo_setup(volatile struct dbdma_cmd *,
+ int, int, int, int, int, struct planb *);
+static inline void planb_dbdma_stop(volatile struct dbdma_regs *);
+static unsigned int saa_geo_setup(int, int, int, int, struct planb *);
+static inline int overlay_is_active(struct planb *);
+
+/*******************************/
+/* Memory management functions */
+/*******************************/
+
+static int grabbuf_alloc(struct planb *pb)
+{
+ int i, npage;
+
+ npage = MAX_GBUFFERS * ((PLANB_MAX_FBUF / PAGE_SIZE + 1)
+#ifndef PLANB_GSCANLINE
+ + MAX_LNUM
+#endif /* PLANB_GSCANLINE */
+ );
+ if ((pb->rawbuf = (unsigned char**) kmalloc (npage
+ * sizeof(unsigned long), GFP_KERNEL)) == 0)
+ return -ENOMEM;
+ for (i = 0; i < npage; i++) {
+ pb->rawbuf[i] = (unsigned char *)__get_free_pages(GFP_KERNEL
+ |GFP_DMA, 0);
+ if (!pb->rawbuf[i])
+ break;
+ SetPageReserved(virt_to_page(pb->rawbuf[i]));
+ }
+ if (i-- < npage) {
+ printk(KERN_DEBUG "PlanB: init_grab: grab buffer not allocated\n");
+ for (; i > 0; i--) {
+ ClearPageReserved(virt_to_page(pb->rawbuf[i]));
+ free_pages((unsigned long)pb->rawbuf[i], 0);
+ }
+ kfree(pb->rawbuf);
+ return -ENOBUFS;
+ }
+ pb->rawbuf_size = npage;
+ return 0;
+}
+
+/*****************************/
+/* Hardware access functions */
+/*****************************/
+
+static void saa_write_reg(unsigned char addr, unsigned char val)
+{
+ planb_regs->saa_addr = addr; eieio();
+ planb_regs->saa_regval = val; eieio();
+ return;
+}
+
+/* return status byte 0 or 1: */
+static unsigned char saa_status(int byte, struct planb *pb)
+{
+ saa_regs[pb->win.norm][SAA7196_STDC] =
+ (saa_regs[pb->win.norm][SAA7196_STDC] & ~2) | ((byte & 1) << 1);
+ saa_write_reg (SAA7196_STDC, saa_regs[pb->win.norm][SAA7196_STDC]);
+
+ /* Let's wait 30msec for this one */
+ msleep_interruptible(30);
+
+ return (unsigned char)in_8 (&planb_regs->saa_status);
+}
+
+static void saa_set(unsigned char addr, unsigned char val, struct planb *pb)
+{
+ if(saa_regs[pb->win.norm][addr] != val) {
+ saa_regs[pb->win.norm][addr] = val;
+ saa_write_reg (addr, val);
+ }
+ return;
+}
+
+static void saa_init_regs(struct planb *pb)
+{
+ int i;
+
+ for (i = 0; i < SAA7196_NUMREGS; i++)
+ saa_write_reg (i, saa_regs[pb->win.norm][i]);
+}
+
+static unsigned int saa_geo_setup(int width, int height, int interlace, int bpp,
+ struct planb *pb)
+{
+ int ht, norm = pb->win.norm;
+
+ switch(bpp) {
+ case 2:
+ /* RGB555+a 1x16-bit + 16-bit transparent */
+ saa_regs[norm][SAA7196_FMTS] &= ~0x3;
+ break;
+ case 1:
+ case 4:
+ /* RGB888 1x24-bit + 8-bit transparent */
+ saa_regs[norm][SAA7196_FMTS] &= ~0x1;
+ saa_regs[norm][SAA7196_FMTS] |= 0x2;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ht = (interlace ? height / 2 : height);
+ saa_regs[norm][SAA7196_OUTPIX] = (unsigned char) (width & 0x00ff);
+ saa_regs[norm][SAA7196_HFILT] = (saa_regs[norm][SAA7196_HFILT] & ~0x3)
+ | (width >> 8 & 0x3);
+ saa_regs[norm][SAA7196_OUTLINE] = (unsigned char) (ht & 0xff);
+ saa_regs[norm][SAA7196_VYP] = (saa_regs[norm][SAA7196_VYP] & ~0x3)
+ | (ht >> 8 & 0x3);
+ /* feed both fields if interlaced, or else feed only even fields */
+ saa_regs[norm][SAA7196_FMTS] = (interlace) ?
+ (saa_regs[norm][SAA7196_FMTS] & ~0x60)
+ : (saa_regs[norm][SAA7196_FMTS] | 0x60);
+ /* transparent mode; extended format enabled */
+ saa_regs[norm][SAA7196_DPATH] |= 0x3;
+
+ return 0;
+}
+
+/***************************/
+/* DBDMA support functions */
+/***************************/
+
+static inline void planb_dbdma_restart(volatile struct dbdma_regs *ch)
+{
+ out_le32(&ch->control, PLANB_CLR(RUN));
+ out_le32(&ch->control, PLANB_SET(RUN|WAKE) | PLANB_CLR(PAUSE));
+}
+
+static inline void planb_dbdma_stop(volatile struct dbdma_regs *ch)
+{
+ int i = 0;
+
+ out_le32(&ch->control, PLANB_CLR(RUN) | PLANB_SET(FLUSH));
+ while((in_le32(&ch->status) == (ACTIVE | FLUSH)) && (i < 999)) {
+ IDEBUG("PlanB: waiting for DMA to stop\n");
+ i++;
+ }
+}
+
+static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *ch,
+ unsigned short command, unsigned int cmd_dep)
+{
+ st_le16(&ch->command, command);
+ st_le32(&ch->cmd_dep, cmd_dep);
+}
+
+static inline void tab_cmd_store(volatile struct dbdma_cmd *ch,
+ unsigned int phy_addr, unsigned int cmd_dep)
+{
+ st_le16(&ch->command, STORE_WORD | KEY_SYSTEM);
+ st_le16(&ch->req_count, 4);
+ st_le32(&ch->phy_addr, phy_addr);
+ st_le32(&ch->cmd_dep, cmd_dep);
+}
+
+static inline void tab_cmd_gen(volatile struct dbdma_cmd *ch,
+ unsigned short command, unsigned short req_count,
+ unsigned int phy_addr, unsigned int cmd_dep)
+{
+ st_le16(&ch->command, command);
+ st_le16(&ch->req_count, req_count);
+ st_le32(&ch->phy_addr, phy_addr);
+ st_le32(&ch->cmd_dep, cmd_dep);
+}
+
+static volatile struct dbdma_cmd *cmd_geo_setup(
+ volatile struct dbdma_cmd *c1, int width, int height, int interlace,
+ int bpp, int clip, struct planb *pb)
+{
+ int norm = pb->win.norm;
+
+ if((saa_geo_setup(width, height, interlace, bpp, pb)) != 0)
+ return (volatile struct dbdma_cmd *)NULL;
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
+ SAA7196_FMTS);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
+ saa_regs[norm][SAA7196_FMTS]);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
+ SAA7196_DPATH);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
+ saa_regs[norm][SAA7196_DPATH]);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->even),
+ bpp | ((clip)? PLANB_CLIPMASK: 0));
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->odd),
+ bpp | ((clip)? PLANB_CLIPMASK: 0));
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
+ SAA7196_OUTPIX);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
+ saa_regs[norm][SAA7196_OUTPIX]);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
+ SAA7196_HFILT);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
+ saa_regs[norm][SAA7196_HFILT]);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
+ SAA7196_OUTLINE);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
+ saa_regs[norm][SAA7196_OUTLINE]);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
+ SAA7196_VYP);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
+ saa_regs[norm][SAA7196_VYP]);
+ return c1;
+}
+
+/******************************/
+/* misc. supporting functions */
+/******************************/
+
+static inline void planb_lock(struct planb *pb)
+{
+ down(&pb->lock);
+}
+
+static inline void planb_unlock(struct planb *pb)
+{
+ up(&pb->lock);
+}
+
+/***************/
+/* Driver Core */
+/***************/
+
+static int planb_prepare_open(struct planb *pb)
+{
+ int i, size;
+
+ /* allocate memory for two plus alpha command buffers (size: max lines,
+ plus 40 commands handling, plus 1 alignment), plus dummy command buf,
+ plus clipmask buffer, plus frame grabbing status */
+ size = (pb->tab_size*(2+MAX_GBUFFERS*TAB_FACTOR)+1+MAX_GBUFFERS
+ * PLANB_DUMMY)*sizeof(struct dbdma_cmd)
+ +(PLANB_MAXLINES*((PLANB_MAXPIXELS+7)& ~7))/8
+ +MAX_GBUFFERS*sizeof(unsigned int);
+ if ((pb->priv_space = kmalloc (size, GFP_KERNEL)) == 0)
+ return -ENOMEM;
+ memset ((void *) pb->priv_space, 0, size);
+ pb->overlay_last1 = pb->ch1_cmd = (volatile struct dbdma_cmd *)
+ DBDMA_ALIGN (pb->priv_space);
+ pb->overlay_last2 = pb->ch2_cmd = pb->ch1_cmd + pb->tab_size;
+ pb->ch1_cmd_phys = virt_to_bus(pb->ch1_cmd);
+ pb->cap_cmd[0] = pb->ch2_cmd + pb->tab_size;
+ pb->pre_cmd[0] = pb->cap_cmd[0] + pb->tab_size * TAB_FACTOR;
+ for (i = 1; i < MAX_GBUFFERS; i++) {
+ pb->cap_cmd[i] = pb->pre_cmd[i-1] + PLANB_DUMMY;
+ pb->pre_cmd[i] = pb->cap_cmd[i] + pb->tab_size * TAB_FACTOR;
+ }
+ pb->frame_stat=(volatile unsigned int *)(pb->pre_cmd[MAX_GBUFFERS-1]
+ + PLANB_DUMMY);
+ pb->mask = (unsigned char *)(pb->frame_stat+MAX_GBUFFERS);
+
+ pb->rawbuf = NULL;
+ pb->rawbuf_size = 0;
+ pb->grabbing = 0;
+ for (i = 0; i < MAX_GBUFFERS; i++) {
+ pb->frame_stat[i] = GBUFFER_UNUSED;
+ pb->gwidth[i] = 0;
+ pb->gheight[i] = 0;
+ pb->gfmt[i] = 0;
+ pb->gnorm_switch[i] = 0;
+#ifndef PLANB_GSCANLINE
+ pb->lsize[i] = 0;
+ pb->lnum[i] = 0;
+#endif /* PLANB_GSCANLINE */
+ }
+ pb->gcount = 0;
+ pb->suspend = 0;
+ pb->last_fr = -999;
+ pb->prev_last_fr = -999;
+
+ /* Reset DMA controllers */
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+
+ return 0;
+}
+
+static void planb_prepare_close(struct planb *pb)
+{
+ int i;
+
+ /* make sure the dma's are idle */
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ /* free kernel memory of command buffers */
+ if(pb->priv_space != 0) {
+ kfree (pb->priv_space);
+ pb->priv_space = 0;
+ pb->cmd_buff_inited = 0;
+ }
+ if(pb->rawbuf) {
+ for (i = 0; i < pb->rawbuf_size; i++) {
+ ClearPageReserved(virt_to_page(pb->rawbuf[i]));
+ free_pages((unsigned long)pb->rawbuf[i], 0);
+ }
+ kfree(pb->rawbuf);
+ }
+ pb->rawbuf = NULL;
+}
+
+/*****************************/
+/* overlay support functions */
+/*****************************/
+
+static inline int overlay_is_active(struct planb *pb)
+{
+ unsigned int size = pb->tab_size * sizeof(struct dbdma_cmd);
+ unsigned int caddr = (unsigned)in_le32(&pb->planb_base->ch1.cmdptr);
+
+ return (in_le32(&pb->overlay_last1->cmd_dep) == pb->ch1_cmd_phys)
+ && (caddr < (pb->ch1_cmd_phys + size))
+ && (caddr >= (unsigned)pb->ch1_cmd_phys);
+}
+
+static void overlay_start(struct planb *pb)
+{
+
+ DEBUG("PlanB: overlay_start()\n");
+
+ if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
+
+ DEBUG("PlanB: presumably, grabbing is in progress...\n");
+
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ out_le32 (&pb->planb_base->ch2.cmdptr,
+ virt_to_bus(pb->ch2_cmd));
+ planb_dbdma_restart(&pb->planb_base->ch2);
+ st_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
+ tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->ch1_cmd));
+ eieio();
+ pb->prev_last_fr = pb->last_fr;
+ pb->last_fr = -2;
+ if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
+ IDEBUG("PlanB: became inactive "
+ "in the mean time... reactivating\n");
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ out_le32 (&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->ch1_cmd));
+ planb_dbdma_restart(&pb->planb_base->ch1);
+ }
+ } else {
+
+ DEBUG("PlanB: currently idle, so can do whatever\n");
+
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ st_le32 (&pb->planb_base->ch2.cmdptr,
+ virt_to_bus(pb->ch2_cmd));
+ st_le32 (&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->ch1_cmd));
+ out_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
+ planb_dbdma_restart(&pb->planb_base->ch2);
+ planb_dbdma_restart(&pb->planb_base->ch1);
+ pb->last_fr = -1;
+ }
+ return;
+}
+
+static void overlay_stop(struct planb *pb)
+{
+ DEBUG("PlanB: overlay_stop()\n");
+
+ if(pb->last_fr == -1) {
+
+ DEBUG("PlanB: no grabbing, it seems...\n");
+
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ pb->last_fr = -999;
+ } else if(pb->last_fr == -2) {
+ unsigned int cmd_dep;
+ tab_cmd_dbdma(pb->cap_cmd[pb->prev_last_fr], DBDMA_STOP, 0);
+ eieio();
+ cmd_dep = (unsigned int)in_le32(&pb->overlay_last1->cmd_dep);
+ if(overlay_is_active(pb)) {
+
+ DEBUG("PlanB: overlay is currently active\n");
+
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ if(cmd_dep != pb->ch1_cmd_phys) {
+ out_le32(&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->overlay_last1));
+ planb_dbdma_restart(&pb->planb_base->ch1);
+ }
+ }
+ pb->last_fr = pb->prev_last_fr;
+ pb->prev_last_fr = -999;
+ }
+ return;
+}
+
+static void suspend_overlay(struct planb *pb)
+{
+ int fr = -1;
+ struct dbdma_cmd last;
+
+ DEBUG("PlanB: suspend_overlay: %d\n", pb->suspend);
+
+ if(pb->suspend++)
+ return;
+ if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
+ if(pb->last_fr == -2) {
+ fr = pb->prev_last_fr;
+ memcpy(&last, (void*)pb->last_cmd[fr], sizeof(last));
+ tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
+ }
+ if(overlay_is_active(pb)) {
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ pb->suspended.overlay = 1;
+ pb->suspended.frame = fr;
+ memcpy(&pb->suspended.cmd, &last, sizeof(last));
+ return;
+ }
+ }
+ pb->suspended.overlay = 0;
+ pb->suspended.frame = fr;
+ memcpy(&pb->suspended.cmd, &last, sizeof(last));
+ return;
+}
+
+static void resume_overlay(struct planb *pb)
+{
+
+ DEBUG("PlanB: resume_overlay: %d\n", pb->suspend);
+
+ if(pb->suspend > 1)
+ return;
+ if(pb->suspended.frame != -1) {
+ memcpy((void*)pb->last_cmd[pb->suspended.frame],
+ &pb->suspended.cmd, sizeof(pb->suspended.cmd));
+ }
+ if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
+ goto finish;
+ }
+ if(pb->suspended.overlay) {
+
+ DEBUG("PlanB: overlay being resumed\n");
+
+ st_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
+ st_le16 (&pb->ch2_cmd->command, DBDMA_NOP);
+ /* Set command buffer addresses */
+ st_le32(&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->overlay_last1));
+ out_le32(&pb->planb_base->ch2.cmdptr,
+ virt_to_bus(pb->overlay_last2));
+ /* Start the DMA controller */
+ out_le32 (&pb->planb_base->ch2.control,
+ PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
+ out_le32 (&pb->planb_base->ch1.control,
+ PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
+ } else if(pb->suspended.frame != -1) {
+ out_le32(&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->last_cmd[pb->suspended.frame]));
+ out_le32 (&pb->planb_base->ch1.control,
+ PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
+ }
+
+finish:
+ pb->suspend--;
+ wake_up_interruptible(&pb->suspendq);
+}
+
+static void add_clip(struct planb *pb, struct video_clip *clip)
+{
+ volatile unsigned char *base;
+ int xc = clip->x, yc = clip->y;
+ int wc = clip->width, hc = clip->height;
+ int ww = pb->win.width, hw = pb->win.height;
+ int x, y, xtmp1, xtmp2;
+
+ DEBUG("PlanB: clip %dx%d+%d+%d\n", wc, hc, xc, yc);
+
+ if(xc < 0) {
+ wc += xc;
+ xc = 0;
+ }
+ if(yc < 0) {
+ hc += yc;
+ yc = 0;
+ }
+ if(xc + wc > ww)
+ wc = ww - xc;
+ if(wc <= 0) /* Nothing to do */
+ return;
+ if(yc + hc > hw)
+ hc = hw - yc;
+
+ for (y = yc; y < yc+hc; y++) {
+ xtmp1=xc>>3;
+ xtmp2=(xc+wc)>>3;
+ base = pb->mask + y*96;
+ if(xc != 0 || wc >= 8)
+ *(base + xtmp1) &= (unsigned char)(0x00ff &
+ (0xff00 >> (xc&7)));
+ for (x = xtmp1 + 1; x < xtmp2; x++) {
+ *(base + x) = 0;
+ }
+ if(xc < (ww & ~0x7))
+ *(base + xtmp2) &= (unsigned char)(0x00ff >>
+ ((xc+wc) & 7));
+ }
+
+ return;
+}
+
+static void fill_cmd_buff(struct planb *pb)
+{
+ int restore = 0;
+ volatile struct dbdma_cmd last;
+
+ DEBUG("PlanB: fill_cmd_buff()\n");
+
+ if(pb->overlay_last1 != pb->ch1_cmd) {
+ restore = 1;
+ last = *(pb->overlay_last1);
+ }
+ memset ((void *) pb->ch1_cmd, 0, 2 * pb->tab_size
+ * sizeof(struct dbdma_cmd));
+ cmd_buff (pb);
+ if(restore)
+ *(pb->overlay_last1) = last;
+ if(pb->suspended.overlay) {
+ unsigned long jump_addr = in_le32(&pb->overlay_last1->cmd_dep);
+ if(jump_addr != pb->ch1_cmd_phys) {
+ int i;
+
+ DEBUG("PlanB: adjusting ch1's jump address\n");
+
+ for(i = 0; i < MAX_GBUFFERS; i++) {
+ if(pb->need_pre_capture[i]) {
+ if(jump_addr == virt_to_bus(pb->pre_cmd[i]))
+ goto found;
+ } else {
+ if(jump_addr == virt_to_bus(pb->cap_cmd[i]))
+ goto found;
+ }
+ }
+
+ DEBUG("PlanB: not found...\n");
+
+ goto out;
+found:
+ if(pb->need_pre_capture[i])
+ out_le32(&pb->pre_cmd[i]->phy_addr,
+ virt_to_bus(pb->overlay_last1));
+ else
+ out_le32(&pb->cap_cmd[i]->phy_addr,
+ virt_to_bus(pb->overlay_last1));
+ }
+ }
+out:
+ pb->cmd_buff_inited = 1;
+
+ return;
+}
+
+static void cmd_buff(struct planb *pb)
+{
+ int i, bpp, count, nlines, stepsize, interlace;
+ unsigned long base, jump, addr_com, addr_dep;
+ volatile struct dbdma_cmd *c1 = pb->ch1_cmd;
+ volatile struct dbdma_cmd *c2 = pb->ch2_cmd;
+
+ interlace = pb->win.interlace;
+ bpp = pb->win.bpp;
+ count = (bpp * ((pb->win.x + pb->win.width > pb->win.swidth) ?
+ (pb->win.swidth - pb->win.x) : pb->win.width));
+ nlines = ((pb->win.y + pb->win.height > pb->win.sheight) ?
+ (pb->win.sheight - pb->win.y) : pb->win.height);
+
+ /* Do video in: */
+
+ /* Preamble commands: */
+ addr_com = virt_to_bus(c1);
+ addr_dep = virt_to_bus(&c1->cmd_dep);
+ tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
+ jump = virt_to_bus(c1+16); /* 14 by cmd_geo_setup() and 2 for padding */
+ if((c1 = cmd_geo_setup(c1, pb->win.width, pb->win.height, interlace,
+ bpp, 1, pb)) == NULL) {
+ printk(KERN_WARNING "PlanB: encountered serious problems\n");
+ tab_cmd_dbdma(pb->ch1_cmd + 1, DBDMA_STOP, 0);
+ tab_cmd_dbdma(pb->ch2_cmd + 1, DBDMA_STOP, 0);
+ return;
+ }
+ tab_cmd_store(c1++, addr_com, (unsigned)(DBDMA_NOP | BR_ALWAYS) << 16);
+ tab_cmd_store(c1++, addr_dep, jump);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
+ PLANB_SET(FIELD_SYNC));
+ /* (1) wait for field sync to be set */
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(ODD_FIELD));
+ /* wait for field sync to be cleared */
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
+ /* if not odd field, wait until field sync is set again */
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
+ /* assert ch_sync to ch2 */
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control),
+ PLANB_SET(CH_SYNC));
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(DMA_ABORT));
+
+ base = (pb->frame_buffer_phys + pb->offset + pb->win.y * (pb->win.bpl
+ + pb->win.pad) + pb->win.x * bpp);
+
+ if (interlace) {
+ stepsize = 2;
+ jump = virt_to_bus(c1 + (nlines + 1) / 2);
+ } else {
+ stepsize = 1;
+ jump = virt_to_bus(c1 + nlines);
+ }
+
+ /* even field data: */
+ for (i=0; i < nlines; i += stepsize, c1++)
+ tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET,
+ count, base + i * (pb->win.bpl + pb->win.pad), jump);
+
+ /* For non-interlaced, we use even fields only */
+ if (!interlace)
+ goto cmd_tab_data_end;
+
+ /* Resync to odd field */
+ /* (2) wait for field sync to be set */
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(ODD_FIELD));
+ /* wait for field sync to be cleared */
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
+ /* if not odd field, wait until field sync is set again */
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
+ /* assert ch_sync to ch2 */
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control),
+ PLANB_SET(CH_SYNC));
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(DMA_ABORT));
+
+ /* odd field data: */
+ jump = virt_to_bus(c1 + nlines / 2);
+ for (i=1; i < nlines; i += stepsize, c1++)
+ tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
+ base + i * (pb->win.bpl + pb->win.pad), jump);
+
+ /* And jump back to the start */
+cmd_tab_data_end:
+ pb->overlay_last1 = c1; /* keep a pointer to the last command */
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch1_cmd));
+
+ /* Clipmask command buffer */
+
+ /* Preamble commands: */
+ tab_cmd_dbdma(c2++, DBDMA_NOP, 0);
+ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel),
+ PLANB_SET(CH_SYNC));
+ /* wait until ch1 asserts ch_sync */
+ tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0);
+ /* clear ch_sync asserted by ch1 */
+ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.control),
+ PLANB_CLR(CH_SYNC));
+ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel),
+ PLANB_SET(FIELD_SYNC));
+ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
+ PLANB_SET(ODD_FIELD));
+
+ /* jump to end of even field if appropriate */
+ /* this points to (interlace)? pos. C: pos. B */
+ jump = (interlace) ? virt_to_bus(c2 + (nlines + 1) / 2 + 2):
+ virt_to_bus(c2 + nlines + 2);
+ /* if odd field, skip over to odd field clipmasking */
+ tab_cmd_dbdma(c2++, DBDMA_NOP | BR_IFSET, jump);
+
+ /* even field mask: */
+ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
+ PLANB_SET(DMA_ABORT));
+ /* this points to pos. B */
+ jump = (interlace) ? virt_to_bus(c2 + nlines + 1):
+ virt_to_bus(c2 + nlines);
+ base = virt_to_bus(pb->mask);
+ for (i=0; i < nlines; i += stepsize, c2++)
+ tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96,
+ base + i * 96, jump);
+
+ /* For non-interlaced, we use only even fields */
+ if(!interlace)
+ goto cmd_tab_mask_end;
+
+ /* odd field mask: */
+/* C */ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
+ PLANB_SET(DMA_ABORT));
+ /* this points to pos. B */
+ jump = virt_to_bus(c2 + nlines / 2);
+ base = virt_to_bus(pb->mask);
+ for (i=1; i < nlines; i += 2, c2++) /* abort if set */
+ tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96,
+ base + i * 96, jump);
+
+ /* Inform channel 1 and jump back to start */
+cmd_tab_mask_end:
+ /* ok, I just realized this is kind of flawed. */
+ /* this part is reached only after odd field clipmasking. */
+ /* wanna clean up? */
+ /* wait for field sync to be set */
+ /* corresponds to fsync (1) of ch1 */
+/* B */ tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0);
+ /* restart ch1, meant to clear any dead bit or something */
+ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control),
+ PLANB_CLR(RUN));
+ tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control),
+ PLANB_SET(RUN));
+ pb->overlay_last2 = c2; /* keep a pointer to the last command */
+ /* start over even field clipmasking */
+ tab_cmd_dbdma(c2, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch2_cmd));
+
+ eieio();
+ return;
+}
+
+/*********************************/
+/* grabdisplay support functions */
+/*********************************/
+
+static int palette2fmt[] = {
+ 0,
+ PLANB_GRAY,
+ 0,
+ 0,
+ 0,
+ PLANB_COLOUR32,
+ PLANB_COLOUR15,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+};
+
+#define PLANB_PALETTE_MAX 15
+
+static int vgrab(struct planb *pb, struct video_mmap *mp)
+{
+ unsigned int fr = mp->frame;
+ unsigned int format;
+
+ if(pb->rawbuf==NULL) {
+ int err;
+ if((err=grabbuf_alloc(pb)))
+ return err;
+ }
+
+ IDEBUG("PlanB: grab %d: %dx%d(%u)\n", pb->grabbing,
+ mp->width, mp->height, fr);
+
+ if(pb->grabbing >= MAX_GBUFFERS)
+ return -ENOBUFS;
+ if(fr > (MAX_GBUFFERS - 1) || fr < 0)
+ return -EINVAL;
+ if(mp->height <= 0 || mp->width <= 0)
+ return -EINVAL;
+ if(mp->format < 0 || mp->format >= PLANB_PALETTE_MAX)
+ return -EINVAL;
+ if((format = palette2fmt[mp->format]) == 0)
+ return -EINVAL;
+ if (mp->height * mp->width * format > PLANB_MAX_FBUF) /* format = bpp */
+ return -EINVAL;
+
+ planb_lock(pb);
+ if(mp->width != pb->gwidth[fr] || mp->height != pb->gheight[fr] ||
+ format != pb->gfmt[fr] || (pb->gnorm_switch[fr])) {
+ int i;
+#ifndef PLANB_GSCANLINE
+ unsigned int osize = pb->gwidth[fr] * pb->gheight[fr]
+ * pb->gfmt[fr];
+ unsigned int nsize = mp->width * mp->height * format;
+#endif
+
+ IDEBUG("PlanB: gwidth = %d, gheight = %d, mp->format = %u\n",
+ mp->width, mp->height, mp->format);
+
+#ifndef PLANB_GSCANLINE
+ if(pb->gnorm_switch[fr])
+ nsize = 0;
+ if (nsize < osize) {
+ for(i = pb->gbuf_idx[fr]; osize > 0; i++) {
+ memset((void *)pb->rawbuf[i], 0, PAGE_SIZE);
+ osize -= PAGE_SIZE;
+ }
+ }
+ for(i = pb->l_fr_addr_idx[fr]; i < pb->l_fr_addr_idx[fr]
+ + pb->lnum[fr]; i++)
+ memset((void *)pb->rawbuf[i], 0, PAGE_SIZE);
+#else
+/* XXX TODO */
+/*
+ if(pb->gnorm_switch[fr])
+ memset((void *)pb->gbuffer[fr], 0,
+ pb->gbytes_per_line * pb->gheight[fr]);
+ else {
+ if(mp->
+ for(i = 0; i < pb->gheight[fr]; i++) {
+ memset((void *)(pb->gbuffer[fr]
+ + pb->gbytes_per_line * i
+ }
+ }
+*/
+#endif
+ pb->gwidth[fr] = mp->width;
+ pb->gheight[fr] = mp->height;
+ pb->gfmt[fr] = format;
+ pb->last_cmd[fr] = setup_grab_cmd(fr, pb);
+ planb_pre_capture(fr, pb->gfmt[fr], pb); /* gfmt = bpp */
+ pb->need_pre_capture[fr] = 1;
+ pb->gnorm_switch[fr] = 0;
+ } else
+ pb->need_pre_capture[fr] = 0;
+ pb->frame_stat[fr] = GBUFFER_GRABBING;
+ if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
+
+ IDEBUG("PlanB: ch1 inactive, initiating grabbing\n");
+
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ if(pb->need_pre_capture[fr]) {
+
+ IDEBUG("PlanB: padding pre-capture sequence\n");
+
+ out_le32 (&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->pre_cmd[fr]));
+ } else {
+ tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
+ tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
+ /* let's be on the safe side. here is not timing critical. */
+ tab_cmd_dbdma((pb->cap_cmd[fr] + 1), DBDMA_NOP, 0);
+ out_le32 (&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->cap_cmd[fr]));
+ }
+ planb_dbdma_restart(&pb->planb_base->ch1);
+ pb->last_fr = fr;
+ } else {
+ int i;
+
+ IDEBUG("PlanB: ch1 active, grabbing being queued\n");
+
+ if((pb->last_fr == -1) || ((pb->last_fr == -2) &&
+ overlay_is_active(pb))) {
+
+ IDEBUG("PlanB: overlay is active, grabbing defered\n");
+
+ tab_cmd_dbdma(pb->last_cmd[fr],
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->ch1_cmd));
+ if(pb->need_pre_capture[fr]) {
+
+ IDEBUG("PlanB: padding pre-capture sequence\n");
+
+ tab_cmd_store(pb->pre_cmd[fr],
+ virt_to_bus(&pb->overlay_last1->cmd_dep),
+ virt_to_bus(pb->ch1_cmd));
+ eieio();
+ out_le32 (&pb->overlay_last1->cmd_dep,
+ virt_to_bus(pb->pre_cmd[fr]));
+ } else {
+ tab_cmd_store(pb->cap_cmd[fr],
+ virt_to_bus(&pb->overlay_last1->cmd_dep),
+ virt_to_bus(pb->ch1_cmd));
+ tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
+ DBDMA_NOP, 0);
+ eieio();
+ out_le32 (&pb->overlay_last1->cmd_dep,
+ virt_to_bus(pb->cap_cmd[fr]));
+ }
+ for(i = 0; overlay_is_active(pb) && i < 999; i++)
+ IDEBUG("PlanB: waiting for overlay done\n");
+ tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0);
+ pb->prev_last_fr = fr;
+ pb->last_fr = -2;
+ } else if(pb->last_fr == -2) {
+
+ IDEBUG("PlanB: mixed mode detected, grabbing"
+ " will be done before activating overlay\n");
+
+ tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0);
+ if(pb->need_pre_capture[fr]) {
+
+ IDEBUG("PlanB: padding pre-capture sequence\n");
+
+ tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr],
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->pre_cmd[fr]));
+ eieio();
+ } else {
+ tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
+ if(pb->gwidth[pb->prev_last_fr] !=
+ pb->gwidth[fr]
+ || pb->gheight[pb->prev_last_fr] !=
+ pb->gheight[fr]
+ || pb->gfmt[pb->prev_last_fr] !=
+ pb->gfmt[fr])
+ tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
+ DBDMA_NOP, 0);
+ else
+ tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->cap_cmd[fr] + 16));
+ tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr],
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->cap_cmd[fr]));
+ eieio();
+ }
+ tab_cmd_dbdma(pb->last_cmd[fr],
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->ch1_cmd));
+ eieio();
+ pb->prev_last_fr = fr;
+ pb->last_fr = -2;
+ } else {
+
+ IDEBUG("PlanB: active grabbing session detected\n");
+
+ if(pb->need_pre_capture[fr]) {
+
+ IDEBUG("PlanB: padding pre-capture sequence\n");
+
+ tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->pre_cmd[fr]));
+ eieio();
+ } else {
+ tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
+ tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
+ if(pb->gwidth[pb->last_fr] != pb->gwidth[fr]
+ || pb->gheight[pb->last_fr] !=
+ pb->gheight[fr]
+ || pb->gfmt[pb->last_fr] !=
+ pb->gfmt[fr])
+ tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
+ DBDMA_NOP, 0);
+ else
+ tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->cap_cmd[fr] + 16));
+ tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
+ DBDMA_NOP | BR_ALWAYS,
+ virt_to_bus(pb->cap_cmd[fr]));
+ eieio();
+ }
+ pb->last_fr = fr;
+ }
+ if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
+
+ IDEBUG("PlanB: became inactive in the mean time..."
+ "reactivating\n");
+
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ out_le32 (&pb->planb_base->ch1.cmdptr,
+ virt_to_bus(pb->cap_cmd[fr]));
+ planb_dbdma_restart(&pb->planb_base->ch1);
+ }
+ }
+ pb->grabbing++;
+ planb_unlock(pb);
+
+ return 0;
+}
+
+static void planb_pre_capture(int fr, int bpp, struct planb *pb)
+{
+ volatile struct dbdma_cmd *c1 = pb->pre_cmd[fr];
+ int interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0;
+
+ tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
+ if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace,
+ bpp, 0, pb)) == NULL) {
+ printk(KERN_WARNING "PlanB: encountered some problems\n");
+ tab_cmd_dbdma(pb->pre_cmd[fr] + 1, DBDMA_STOP, 0);
+ return;
+ }
+ /* Sync to even field */
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
+ PLANB_SET(FIELD_SYNC));
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(ODD_FIELD));
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
+ tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(DMA_ABORT));
+ /* For non-interlaced, we use even fields only */
+ if (pb->gheight[fr] <= pb->maxlines/2)
+ goto cmd_tab_data_end;
+ /* Sync to odd field */
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(ODD_FIELD));
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(DMA_ABORT));
+cmd_tab_data_end:
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->cap_cmd[fr]));
+
+ eieio();
+}
+
+static volatile struct dbdma_cmd *setup_grab_cmd(int fr, struct planb *pb)
+{
+ int i, bpp, count, nlines, stepsize, interlace;
+#ifdef PLANB_GSCANLINE
+ int scanline;
+#else
+ int nlpp, leftover1;
+ unsigned long base;
+#endif
+ unsigned long jump;
+ int pagei;
+ volatile struct dbdma_cmd *c1;
+ volatile struct dbdma_cmd *jump_addr;
+
+ c1 = pb->cap_cmd[fr];
+ interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0;
+ bpp = pb->gfmt[fr]; /* gfmt = bpp */
+ count = bpp * pb->gwidth[fr];
+ nlines = pb->gheight[fr];
+#ifdef PLANB_GSCANLINE
+ scanline = pb->gbytes_per_line;
+#else
+ pb->lsize[fr] = count;
+ pb->lnum[fr] = 0;
+#endif
+
+ /* Do video in: */
+
+ /* Preamble commands: */
+ tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(c1 + 16)); c1++;
+ if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace,
+ bpp, 0, pb)) == NULL) {
+ printk(KERN_WARNING "PlanB: encountered serious problems\n");
+ tab_cmd_dbdma(pb->cap_cmd[fr] + 1, DBDMA_STOP, 0);
+ return (pb->cap_cmd[fr] + 2);
+ }
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
+ PLANB_SET(FIELD_SYNC));
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(ODD_FIELD));
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
+ tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(DMA_ABORT));
+
+ if (interlace) {
+ stepsize = 2;
+ jump_addr = c1 + TAB_FACTOR * (nlines + 1) / 2;
+ } else {
+ stepsize = 1;
+ jump_addr = c1 + TAB_FACTOR * nlines;
+ }
+ jump = virt_to_bus(jump_addr);
+
+ /* even field data: */
+
+ pagei = pb->gbuf_idx[fr];
+#ifdef PLANB_GSCANLINE
+ for (i = 0; i < nlines; i += stepsize) {
+ tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
+ virt_to_bus(pb->rawbuf[pagei
+ + i * scanline / PAGE_SIZE]), jump);
+ }
+#else
+ i = 0;
+ leftover1 = 0;
+ do {
+ int j;
+
+ base = virt_to_bus(pb->rawbuf[pagei]);
+ nlpp = (PAGE_SIZE - leftover1) / count / stepsize;
+ for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++)
+ tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET,
+ count, base + count * j * stepsize + leftover1, jump);
+ if(i < nlines) {
+ int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1;
+
+ if(lov0 == 0)
+ leftover1 = 0;
+ else {
+ if(lov0 >= count) {
+ tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, base
+ + count * nlpp * stepsize + leftover1, jump);
+ } else {
+ pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei]
+ + count * nlpp * stepsize + leftover1;
+ pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1;
+ pb->l_to_next_size[fr][pb->lnum[fr]] = count - lov0;
+ tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
+ virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr]
+ + pb->lnum[fr]]), jump);
+ if(++pb->lnum[fr] > MAX_LNUM)
+ pb->lnum[fr]--;
+ }
+ leftover1 = count * stepsize - lov0;
+ i += stepsize;
+ }
+ }
+ pagei++;
+ } while(i < nlines);
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump);
+ c1 = jump_addr;
+#endif /* PLANB_GSCANLINE */
+
+ /* For non-interlaced, we use even fields only */
+ if (!interlace)
+ goto cmd_tab_data_end;
+
+ /* Sync to odd field */
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(ODD_FIELD));
+ tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
+ PLANB_SET(DMA_ABORT));
+
+ /* odd field data: */
+ jump_addr = c1 + TAB_FACTOR * nlines / 2;
+ jump = virt_to_bus(jump_addr);
+#ifdef PLANB_GSCANLINE
+ for (i = 1; i < nlines; i += stepsize) {
+ tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
+ virt_to_bus(pb->rawbuf[pagei
+ + i * scanline / PAGE_SIZE]), jump);
+ }
+#else
+ i = 1;
+ leftover1 = 0;
+ pagei = pb->gbuf_idx[fr];
+ if(nlines <= 1)
+ goto skip;
+ do {
+ int j;
+
+ base = virt_to_bus(pb->rawbuf[pagei]);
+ nlpp = (PAGE_SIZE - leftover1) / count / stepsize;
+ if(leftover1 >= count) {
+ tab_cmd_gen(c1++, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
+ base + leftover1 - count, jump);
+ i += stepsize;
+ }
+ for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++)
+ tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
+ base + count * (j * stepsize + 1) + leftover1, jump);
+ if(i < nlines) {
+ int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1;
+
+ if(lov0 == 0)
+ leftover1 = 0;
+ else {
+ if(lov0 > count) {
+ pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei]
+ + count * (nlpp * stepsize + 1) + leftover1;
+ pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1;
+ pb->l_to_next_size[fr][pb->lnum[fr]] = count * stepsize
+ - lov0;
+ tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
+ virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr]
+ + pb->lnum[fr]]), jump);
+ if(++pb->lnum[fr] > MAX_LNUM)
+ pb->lnum[fr]--;
+ i += stepsize;
+ }
+ leftover1 = count * stepsize - lov0;
+ }
+ }
+ pagei++;
+ } while(i < nlines);
+skip:
+ tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump);
+ c1 = jump_addr;
+#endif /* PLANB_GSCANLINE */
+
+cmd_tab_data_end:
+ tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->intr_stat),
+ (fr << 9) | PLANB_FRM_IRQ | PLANB_GEN_IRQ);
+ /* stop it */
+ tab_cmd_dbdma(c1, DBDMA_STOP, 0);
+
+ eieio();
+ return c1;
+}
+
+static void planb_irq(int irq, void *dev_id, struct pt_regs * regs)
+{
+ unsigned int stat, astat;
+ struct planb *pb = (struct planb *)dev_id;
+
+ IDEBUG("PlanB: planb_irq()\n");
+
+ /* get/clear interrupt status bits */
+ eieio();
+ stat = in_le32(&pb->planb_base->intr_stat);
+ astat = stat & pb->intr_mask;
+ out_le32(&pb->planb_base->intr_stat, PLANB_FRM_IRQ
+ & ~astat & stat & ~PLANB_GEN_IRQ);
+ IDEBUG("PlanB: stat = %X, astat = %X\n", stat, astat);
+
+ if(astat & PLANB_FRM_IRQ) {
+ unsigned int fr = stat >> 9;
+#ifndef PLANB_GSCANLINE
+ int i;
+#endif
+ IDEBUG("PlanB: PLANB_FRM_IRQ\n");
+
+ pb->gcount++;
+
+ IDEBUG("PlanB: grab %d: fr = %d, gcount = %d\n",
+ pb->grabbing, fr, pb->gcount);
+#ifndef PLANB_GSCANLINE
+ IDEBUG("PlanB: %d * %d bytes are being copied over\n",
+ pb->lnum[fr], pb->lsize[fr]);
+ for(i = 0; i < pb->lnum[fr]; i++) {
+ int first = pb->lsize[fr] - pb->l_to_next_size[fr][i];
+
+ memcpy(pb->l_to_addr[fr][i],
+ pb->rawbuf[pb->l_fr_addr_idx[fr] + i],
+ first);
+ memcpy(pb->rawbuf[pb->l_to_next_idx[fr][i]],
+ pb->rawbuf[pb->l_fr_addr_idx[fr] + i] + first,
+ pb->l_to_next_size[fr][i]);
+ }
+#endif
+ pb->frame_stat[fr] = GBUFFER_DONE;
+ pb->grabbing--;
+ wake_up_interruptible(&pb->capq);
+ return;
+ }
+ /* incorrect interrupts? */
+ pb->intr_mask = PLANB_CLR_IRQ;
+ out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
+ printk(KERN_ERR "PlanB: IRQ lockup, cleared intrrupts"
+ " unconditionally\n");
+}
+
+/*******************************
+ * Device Operations functions *
+ *******************************/
+
+static int planb_open(struct video_device *dev, int mode)
+{
+ struct planb *pb = (struct planb *)dev;
+
+ if (pb->user == 0) {
+ int err;
+ if((err = planb_prepare_open(pb)) != 0)
+ return err;
+ }
+ pb->user++;
+
+ DEBUG("PlanB: device opened\n");
+ return 0;
+}
+
+static void planb_close(struct video_device *dev)
+{
+ struct planb *pb = (struct planb *)dev;
+
+ if(pb->user < 1) /* ??? */
+ return;
+ planb_lock(pb);
+ if (pb->user == 1) {
+ if (pb->overlay) {
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+ pb->overlay = 0;
+ }
+ planb_prepare_close(pb);
+ }
+ pb->user--;
+ planb_unlock(pb);
+
+ DEBUG("PlanB: device closed\n");
+}
+
+static long planb_read(struct video_device *v, char *buf, unsigned long count,
+ int nonblock)
+{
+ DEBUG("planb: read request\n");
+ return -EINVAL;
+}
+
+static long planb_write(struct video_device *v, const char *buf,
+ unsigned long count, int nonblock)
+{
+ DEBUG("planb: write request\n");
+ return -EINVAL;
+}
+
+static int planb_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
+{
+ struct planb *pb=(struct planb *)dev;
+
+ switch (cmd)
+ {
+ case VIDIOCGCAP:
+ {
+ struct video_capability b;
+
+ DEBUG("PlanB: IOCTL VIDIOCGCAP\n");
+
+ strcpy (b.name, pb->video_dev.name);
+ b.type = VID_TYPE_OVERLAY | VID_TYPE_CLIPPING |
+ VID_TYPE_FRAMERAM | VID_TYPE_SCALES |
+ VID_TYPE_CAPTURE;
+ b.channels = 2; /* composite & svhs */
+ b.audios = 0;
+ b.maxwidth = PLANB_MAXPIXELS;
+ b.maxheight = PLANB_MAXLINES;
+ b.minwidth = 32; /* wild guess */
+ b.minheight = 32;
+ if (copy_to_user(arg,&b,sizeof(b)))
+ return -EFAULT;
+ return 0;
+ }
+ case VIDIOCSFBUF:
+ {
+ struct video_buffer v;
+ unsigned short bpp;
+ unsigned int fmt;
+
+ DEBUG("PlanB: IOCTL VIDIOCSFBUF\n");
+
+ if (!capable(CAP_SYS_ADMIN)
+ || !capable(CAP_SYS_RAWIO))
+ return -EPERM;
+ if (copy_from_user(&v, arg,sizeof(v)))
+ return -EFAULT;
+ planb_lock(pb);
+ switch(v.depth) {
+ case 8:
+ bpp = 1;
+ fmt = PLANB_GRAY;
+ break;
+ case 15:
+ case 16:
+ bpp = 2;
+ fmt = PLANB_COLOUR15;
+ break;
+ case 24:
+ case 32:
+ bpp = 4;
+ fmt = PLANB_COLOUR32;
+ break;
+ default:
+ planb_unlock(pb);
+ return -EINVAL;
+ }
+ if (bpp * v.width > v.bytesperline) {
+ planb_unlock(pb);
+ return -EINVAL;
+ }
+ pb->win.bpp = bpp;
+ pb->win.color_fmt = fmt;
+ pb->frame_buffer_phys = (unsigned long) v.base;
+ pb->win.sheight = v.height;
+ pb->win.swidth = v.width;
+ pb->picture.depth = pb->win.depth = v.depth;
+ pb->win.bpl = pb->win.bpp * pb->win.swidth;
+ pb->win.pad = v.bytesperline - pb->win.bpl;
+
+ DEBUG("PlanB: Display at %p is %d by %d, bytedepth %d,"
+ " bpl %d (+ %d)\n", v.base, v.width,v.height,
+ pb->win.bpp, pb->win.bpl, pb->win.pad);
+
+ pb->cmd_buff_inited = 0;
+ if(pb->overlay) {
+ suspend_overlay(pb);
+ fill_cmd_buff(pb);
+ resume_overlay(pb);
+ }
+ planb_unlock(pb);
+ return 0;
+ }
+ case VIDIOCGFBUF:
+ {
+ struct video_buffer v;
+
+ DEBUG("PlanB: IOCTL VIDIOCGFBUF\n");
+
+ v.base = (void *)pb->frame_buffer_phys;
+ v.height = pb->win.sheight;
+ v.width = pb->win.swidth;
+ v.depth = pb->win.depth;
+ v.bytesperline = pb->win.bpl + pb->win.pad;
+ if (copy_to_user(arg, &v, sizeof(v)))
+ return -EFAULT;
+ return 0;
+ }
+ case VIDIOCCAPTURE:
+ {
+ int i;
+
+ if(copy_from_user(&i, arg, sizeof(i)))
+ return -EFAULT;
+ if(i==0) {
+ DEBUG("PlanB: IOCTL VIDIOCCAPTURE Stop\n");
+
+ if (!(pb->overlay))
+ return 0;
+ planb_lock(pb);
+ pb->overlay = 0;
+ overlay_stop(pb);
+ planb_unlock(pb);
+ } else {
+ DEBUG("PlanB: IOCTL VIDIOCCAPTURE Start\n");
+
+ if (pb->frame_buffer_phys == 0 ||
+ pb->win.width == 0 ||
+ pb->win.height == 0)
+ return -EINVAL;
+ if (pb->overlay)
+ return 0;
+ planb_lock(pb);
+ pb->overlay = 1;
+ if(!(pb->cmd_buff_inited))
+ fill_cmd_buff(pb);
+ overlay_start(pb);
+ planb_unlock(pb);
+ }
+ return 0;
+ }
+ case VIDIOCGCHAN:
+ {
+ struct video_channel v;
+
+ DEBUG("PlanB: IOCTL VIDIOCGCHAN\n");
+
+ if(copy_from_user(&v, arg,sizeof(v)))
+ return -EFAULT;
+ v.flags = 0;
+ v.tuners = 0;
+ v.type = VIDEO_TYPE_CAMERA;
+ v.norm = pb->win.norm;
+ switch(v.channel)
+ {
+ case 0:
+ strcpy(v.name,"Composite");
+ break;
+ case 1:
+ strcpy(v.name,"SVHS");
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ if(copy_to_user(arg,&v,sizeof(v)))
+ return -EFAULT;
+
+ return 0;
+ }
+ case VIDIOCSCHAN:
+ {
+ struct video_channel v;
+
+ DEBUG("PlanB: IOCTL VIDIOCSCHAN\n");
+
+ if(copy_from_user(&v, arg, sizeof(v)))
+ return -EFAULT;
+
+ if (v.norm != pb->win.norm) {
+ int i, maxlines;
+
+ switch (v.norm)
+ {
+ case VIDEO_MODE_PAL:
+ case VIDEO_MODE_SECAM:
+ maxlines = PLANB_MAXLINES;
+ break;
+ case VIDEO_MODE_NTSC:
+ maxlines = PLANB_NTSC_MAXLINES;
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ planb_lock(pb);
+ /* empty the grabbing queue */
+ wait_event(pb->capq, !pb->grabbing);
+ pb->maxlines = maxlines;
+ pb->win.norm = v.norm;
+ /* Stop overlay if running */
+ suspend_overlay(pb);
+ for(i = 0; i < MAX_GBUFFERS; i++)
+ pb->gnorm_switch[i] = 1;
+ /* I know it's an overkill, but.... */
+ fill_cmd_buff(pb);
+ /* ok, now init it accordingly */
+ saa_init_regs (pb);
+ /* restart overlay if it was running */
+ resume_overlay(pb);
+ planb_unlock(pb);
+ }
+
+ switch(v.channel)
+ {
+ case 0: /* Composite */
+ saa_set (SAA7196_IOCC,
+ ((saa_regs[pb->win.norm][SAA7196_IOCC] &
+ ~7) | 3), pb);
+ break;
+ case 1: /* SVHS */
+ saa_set (SAA7196_IOCC,
+ ((saa_regs[pb->win.norm][SAA7196_IOCC] &
+ ~7) | 4), pb);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+
+ return 0;
+ }
+ case VIDIOCGPICT:
+ {
+ struct video_picture vp = pb->picture;
+
+ DEBUG("PlanB: IOCTL VIDIOCGPICT\n");
+
+ switch(pb->win.color_fmt) {
+ case PLANB_GRAY:
+ vp.palette = VIDEO_PALETTE_GREY;
+ case PLANB_COLOUR15:
+ vp.palette = VIDEO_PALETTE_RGB555;
+ break;
+ case PLANB_COLOUR32:
+ vp.palette = VIDEO_PALETTE_RGB32;
+ break;
+ default:
+ vp.palette = 0;
+ break;
+ }
+
+ if(copy_to_user(arg,&vp,sizeof(vp)))
+ return -EFAULT;
+ return 0;
+ }
+ case VIDIOCSPICT:
+ {
+ struct video_picture vp;
+
+ DEBUG("PlanB: IOCTL VIDIOCSPICT\n");
+
+ if(copy_from_user(&vp,arg,sizeof(vp)))
+ return -EFAULT;
+ pb->picture = vp;
+ /* Should we do sanity checks here? */
+ saa_set (SAA7196_BRIG, (unsigned char)
+ ((pb->picture.brightness) >> 8), pb);
+ saa_set (SAA7196_HUEC, (unsigned char)
+ ((pb->picture.hue) >> 8) ^ 0x80, pb);
+ saa_set (SAA7196_CSAT, (unsigned char)
+ ((pb->picture.colour) >> 9), pb);
+ saa_set (SAA7196_CONT, (unsigned char)
+ ((pb->picture.contrast) >> 9), pb);
+
+ return 0;
+ }
+ case VIDIOCSWIN:
+ {
+ struct video_window vw;
+ struct video_clip clip;
+ int i;
+
+ DEBUG("PlanB: IOCTL VIDIOCSWIN\n");
+
+ if(copy_from_user(&vw,arg,sizeof(vw)))
+ return -EFAULT;
+
+ planb_lock(pb);
+ /* Stop overlay if running */
+ suspend_overlay(pb);
+ pb->win.interlace = (vw.height > pb->maxlines/2)? 1: 0;
+ if (pb->win.x != vw.x ||
+ pb->win.y != vw.y ||
+ pb->win.width != vw.width ||
+ pb->win.height != vw.height ||
+ !pb->cmd_buff_inited) {
+ pb->win.x = vw.x;
+ pb->win.y = vw.y;
+ pb->win.width = vw.width;
+ pb->win.height = vw.height;
+ fill_cmd_buff(pb);
+ }
+ /* Reset clip mask */
+ memset ((void *) pb->mask, 0xff, (pb->maxlines
+ * ((PLANB_MAXPIXELS + 7) & ~7)) / 8);
+ /* Add any clip rects */
+ for (i = 0; i < vw.clipcount; i++) {
+ if (copy_from_user(&clip, vw.clips + i,
+ sizeof(struct video_clip)))
+ return -EFAULT;
+ add_clip(pb, &clip);
+ }
+ /* restart overlay if it was running */
+ resume_overlay(pb);
+ planb_unlock(pb);
+ return 0;
+ }
+ case VIDIOCGWIN:
+ {
+ struct video_window vw;
+
+ DEBUG("PlanB: IOCTL VIDIOCGWIN\n");
+
+ vw.x=pb->win.x;
+ vw.y=pb->win.y;
+ vw.width=pb->win.width;
+ vw.height=pb->win.height;
+ vw.chromakey=0;
+ vw.flags=0;
+ if(pb->win.interlace)
+ vw.flags|=VIDEO_WINDOW_INTERLACE;
+ if(copy_to_user(arg,&vw,sizeof(vw)))
+ return -EFAULT;
+ return 0;
+ }
+ case VIDIOCSYNC: {
+ int i;
+
+ IDEBUG("PlanB: IOCTL VIDIOCSYNC\n");
+
+ if(copy_from_user((void *)&i,arg,sizeof(int)))
+ return -EFAULT;
+
+ IDEBUG("PlanB: sync to frame %d\n", i);
+
+ if(i > (MAX_GBUFFERS - 1) || i < 0)
+ return -EINVAL;
+chk_grab:
+ switch (pb->frame_stat[i]) {
+ case GBUFFER_UNUSED:
+ return -EINVAL;
+ case GBUFFER_GRABBING:
+ IDEBUG("PlanB: waiting for grab"
+ " done (%d)\n", i);
+ interruptible_sleep_on(&pb->capq);
+ if(signal_pending(current))
+ return -EINTR;
+ goto chk_grab;
+ case GBUFFER_DONE:
+ pb->frame_stat[i] = GBUFFER_UNUSED;
+ break;
+ }
+ return 0;
+ }
+
+ case VIDIOCMCAPTURE:
+ {
+ struct video_mmap vm;
+ volatile unsigned int status;
+
+ IDEBUG("PlanB: IOCTL VIDIOCMCAPTURE\n");
+
+ if(copy_from_user((void *) &vm,(void *)arg,sizeof(vm)))
+ return -EFAULT;
+ status = pb->frame_stat[vm.frame];
+ if (status != GBUFFER_UNUSED)
+ return -EBUSY;
+
+ return vgrab(pb, &vm);
+ }
+
+ case VIDIOCGMBUF:
+ {
+ int i;
+ struct video_mbuf vm;
+
+ DEBUG("PlanB: IOCTL VIDIOCGMBUF\n");
+
+ memset(&vm, 0 , sizeof(vm));
+ vm.size = PLANB_MAX_FBUF * MAX_GBUFFERS;
+ vm.frames = MAX_GBUFFERS;
+ for(i = 0; i<MAX_GBUFFERS; i++)
+ vm.offsets[i] = PLANB_MAX_FBUF * i;
+ if(copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
+ return -EFAULT;
+ return 0;
+ }
+
+ case PLANBIOCGSAAREGS:
+ {
+ struct planb_saa_regs preg;
+
+ DEBUG("PlanB: IOCTL PLANBIOCGSAAREGS\n");
+
+ if(copy_from_user(&preg, arg, sizeof(preg)))
+ return -EFAULT;
+ if(preg.addr >= SAA7196_NUMREGS)
+ return -EINVAL;
+ preg.val = saa_regs[pb->win.norm][preg.addr];
+ if(copy_to_user((void *)arg, (void *)&preg,
+ sizeof(preg)))
+ return -EFAULT;
+ return 0;
+ }
+
+ case PLANBIOCSSAAREGS:
+ {
+ struct planb_saa_regs preg;
+
+ DEBUG("PlanB: IOCTL PLANBIOCSSAAREGS\n");
+
+ if(copy_from_user(&preg, arg, sizeof(preg)))
+ return -EFAULT;
+ if(preg.addr >= SAA7196_NUMREGS)
+ return -EINVAL;
+ saa_set (preg.addr, preg.val, pb);
+ return 0;
+ }
+
+ case PLANBIOCGSTAT:
+ {
+ struct planb_stat_regs pstat;
+
+ DEBUG("PlanB: IOCTL PLANBIOCGSTAT\n");
+
+ pstat.ch1_stat = in_le32(&pb->planb_base->ch1.status);
+ pstat.ch2_stat = in_le32(&pb->planb_base->ch2.status);
+ pstat.saa_stat0 = saa_status(0, pb);
+ pstat.saa_stat1 = saa_status(1, pb);
+
+ if(copy_to_user((void *)arg, (void *)&pstat,
+ sizeof(pstat)))
+ return -EFAULT;
+ return 0;
+ }
+
+ case PLANBIOCSMODE: {
+ int v;
+
+ DEBUG("PlanB: IOCTL PLANBIOCSMODE\n");
+
+ if(copy_from_user(&v, arg, sizeof(v)))
+ return -EFAULT;
+
+ switch(v)
+ {
+ case PLANB_TV_MODE:
+ saa_set (SAA7196_STDC,
+ (saa_regs[pb->win.norm][SAA7196_STDC] &
+ 0x7f), pb);
+ break;
+ case PLANB_VTR_MODE:
+ saa_set (SAA7196_STDC,
+ (saa_regs[pb->win.norm][SAA7196_STDC] |
+ 0x80), pb);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ pb->win.mode = v;
+ return 0;
+ }
+ case PLANBIOCGMODE: {
+ int v=pb->win.mode;
+
+ DEBUG("PlanB: IOCTL PLANBIOCGMODE\n");
+
+ if(copy_to_user(arg,&v,sizeof(v)))
+ return -EFAULT;
+ return 0;
+ }
+#ifdef PLANB_GSCANLINE
+ case PLANBG_GRAB_BPL: {
+ int v=pb->gbytes_per_line;
+
+ DEBUG("PlanB: IOCTL PLANBG_GRAB_BPL\n");
+
+ if(copy_to_user(arg,&v,sizeof(v)))
+ return -EFAULT;
+ return 0;
+ }
+#endif /* PLANB_GSCANLINE */
+ case PLANB_INTR_DEBUG: {
+ int i;
+
+ DEBUG("PlanB: IOCTL PLANB_INTR_DEBUG\n");
+
+ if(copy_from_user(&i, arg, sizeof(i)))
+ return -EFAULT;
+
+ /* avoid hang ups all together */
+ for (i = 0; i < MAX_GBUFFERS; i++) {
+ if(pb->frame_stat[i] == GBUFFER_GRABBING) {
+ pb->frame_stat[i] = GBUFFER_DONE;
+ }
+ }
+ if(pb->grabbing)
+ pb->grabbing--;
+ wake_up_interruptible(&pb->capq);
+ return 0;
+ }
+ case PLANB_INV_REGS: {
+ int i;
+ struct planb_any_regs any;
+
+ DEBUG("PlanB: IOCTL PLANB_INV_REGS\n");
+
+ if(copy_from_user(&any, arg, sizeof(any)))
+ return -EFAULT;
+ if(any.offset < 0 || any.offset + any.bytes > 0x400)
+ return -EINVAL;
+ if(any.bytes > 128)
+ return -EINVAL;
+ for (i = 0; i < any.bytes; i++) {
+ any.data[i] =
+ in_8((unsigned char *)pb->planb_base
+ + any.offset + i);
+ }
+ if(copy_to_user(arg,&any,sizeof(any)))
+ return -EFAULT;
+ return 0;
+ }
+ default:
+ {
+ DEBUG("PlanB: Unimplemented IOCTL\n");
+ return -ENOIOCTLCMD;
+ }
+ /* Some IOCTLs are currently unsupported on PlanB */
+ case VIDIOCGTUNER: {
+ DEBUG("PlanB: IOCTL VIDIOCGTUNER\n");
+ goto unimplemented; }
+ case VIDIOCSTUNER: {
+ DEBUG("PlanB: IOCTL VIDIOCSTUNER\n");
+ goto unimplemented; }
+ case VIDIOCSFREQ: {
+ DEBUG("PlanB: IOCTL VIDIOCSFREQ\n");
+ goto unimplemented; }
+ case VIDIOCGFREQ: {
+ DEBUG("PlanB: IOCTL VIDIOCGFREQ\n");
+ goto unimplemented; }
+ case VIDIOCKEY: {
+ DEBUG("PlanB: IOCTL VIDIOCKEY\n");
+ goto unimplemented; }
+ case VIDIOCSAUDIO: {
+ DEBUG("PlanB: IOCTL VIDIOCSAUDIO\n");
+ goto unimplemented; }
+ case VIDIOCGAUDIO: {
+ DEBUG("PlanB: IOCTL VIDIOCGAUDIO\n");
+ goto unimplemented; }
+unimplemented:
+ DEBUG(" Unimplemented\n");
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static int planb_mmap(struct vm_area_struct *vma, struct video_device *dev, const char *adr, unsigned long size)
+{
+ int i;
+ struct planb *pb = (struct planb *)dev;
+ unsigned long start = (unsigned long)adr;
+
+ if (size > MAX_GBUFFERS * PLANB_MAX_FBUF)
+ return -EINVAL;
+ if (!pb->rawbuf) {
+ int err;
+ if((err=grabbuf_alloc(pb)))
+ return err;
+ }
+ for (i = 0; i < pb->rawbuf_size; i++) {
+ unsigned long pfn;
+
+ pfn = virt_to_phys((void *)pb->rawbuf[i]) >> PAGE_SHIFT;
+ if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
+ return -EAGAIN;
+ start += PAGE_SIZE;
+ if (size <= PAGE_SIZE)
+ break;
+ size -= PAGE_SIZE;
+ }
+ return 0;
+}
+
+static struct video_device planb_template=
+{
+ .owner = THIS_MODULE,
+ .name = PLANB_DEVICE_NAME,
+ .type = VID_TYPE_OVERLAY,
+ .hardware = VID_HARDWARE_PLANB,
+ .open = planb_open,
+ .close = planb_close,
+ .read = planb_read,
+ .write = planb_write,
+ .ioctl = planb_ioctl,
+ .mmap = planb_mmap, /* mmap? */
+};
+
+static int init_planb(struct planb *pb)
+{
+ unsigned char saa_rev;
+ int i, result;
+
+ memset ((void *) &pb->win, 0, sizeof (struct planb_window));
+ /* Simple sanity check */
+ if(def_norm >= NUM_SUPPORTED_NORM || def_norm < 0) {
+ printk(KERN_ERR "PlanB: Option(s) invalid\n");
+ return -2;
+ }
+ pb->win.norm = def_norm;
+ pb->win.mode = PLANB_TV_MODE; /* TV mode */
+ pb->win.interlace=1;
+ pb->win.x=0;
+ pb->win.y=0;
+ pb->win.width=768; /* 640 */
+ pb->win.height=576; /* 480 */
+ pb->maxlines=576;
+#if 0
+ btv->win.cropwidth=768; /* 640 */
+ btv->win.cropheight=576; /* 480 */
+ btv->win.cropx=0;
+ btv->win.cropy=0;
+#endif
+ pb->win.pad=0;
+ pb->win.bpp=4;
+ pb->win.depth=32;
+ pb->win.color_fmt=PLANB_COLOUR32;
+ pb->win.bpl=1024*pb->win.bpp;
+ pb->win.swidth=1024;
+ pb->win.sheight=768;
+#ifdef PLANB_GSCANLINE
+ if((pb->gbytes_per_line = PLANB_MAXPIXELS * 4) > PAGE_SIZE
+ || (pb->gbytes_per_line <= 0))
+ return -3;
+ else {
+ /* page align pb->gbytes_per_line for DMA purpose */
+ for(i = PAGE_SIZE; pb->gbytes_per_line < (i>>1);)
+ i>>=1;
+ pb->gbytes_per_line = i;
+ }
+#endif
+ pb->tab_size = PLANB_MAXLINES + 40;
+ pb->suspend = 0;
+ init_MUTEX(&pb->lock);
+ pb->ch1_cmd = 0;
+ pb->ch2_cmd = 0;
+ pb->mask = 0;
+ pb->priv_space = 0;
+ pb->offset = 0;
+ pb->user = 0;
+ pb->overlay = 0;
+ init_waitqueue_head(&pb->suspendq);
+ pb->cmd_buff_inited = 0;
+ pb->frame_buffer_phys = 0;
+
+ /* Reset DMA controllers */
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+
+ saa_rev = (saa_status(0, pb) & 0xf0) >> 4;
+ printk(KERN_INFO "PlanB: SAA7196 video processor rev. %d\n", saa_rev);
+ /* Initialize the SAA registers in memory and on chip */
+ saa_init_regs (pb);
+
+ /* clear interrupt mask */
+ pb->intr_mask = PLANB_CLR_IRQ;
+
+ result = request_irq(pb->irq, planb_irq, 0, "PlanB", (void *)pb);
+ if (result < 0) {
+ if (result==-EINVAL)
+ printk(KERN_ERR "PlanB: Bad irq number (%d) "
+ "or handler\n", (int)pb->irq);
+ else if (result==-EBUSY)
+ printk(KERN_ERR "PlanB: I don't know why, "
+ "but IRQ %d is busy\n", (int)pb->irq);
+ return result;
+ }
+ disable_irq(pb->irq);
+
+ /* Now add the template and register the device unit. */
+ memcpy(&pb->video_dev,&planb_template,sizeof(planb_template));
+
+ pb->picture.brightness=0x90<<8;
+ pb->picture.contrast = 0x70 << 8;
+ pb->picture.colour = 0x70<<8;
+ pb->picture.hue = 0x8000;
+ pb->picture.whiteness = 0;
+ pb->picture.depth = pb->win.depth;
+
+ pb->frame_stat=NULL;
+ init_waitqueue_head(&pb->capq);
+ for(i=0; i<MAX_GBUFFERS; i++) {
+ pb->gbuf_idx[i] = PLANB_MAX_FBUF * i / PAGE_SIZE;
+ pb->gwidth[i]=0;
+ pb->gheight[i]=0;
+ pb->gfmt[i]=0;
+ pb->cap_cmd[i]=NULL;
+#ifndef PLANB_GSCANLINE
+ pb->l_fr_addr_idx[i] = MAX_GBUFFERS * (PLANB_MAX_FBUF
+ / PAGE_SIZE + 1) + MAX_LNUM * i;
+ pb->lsize[i] = 0;
+ pb->lnum[i] = 0;
+#endif
+ }
+ pb->rawbuf=NULL;
+ pb->grabbing=0;
+
+ /* enable interrupts */
+ out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
+ pb->intr_mask = PLANB_FRM_IRQ;
+ enable_irq(pb->irq);
+
+ if(video_register_device(&pb->video_dev, VFL_TYPE_GRABBER, video_nr)<0)
+ return -1;
+
+ return 0;
+}
+
+/*
+ * Scan for a PlanB controller, request the irq and map the io memory
+ */
+
+static int find_planb(void)
+{
+ struct planb *pb;
+ struct device_node *planb_devices;
+ unsigned char dev_fn, confreg, bus;
+ unsigned int old_base, new_base;
+ unsigned int irq;
+ struct pci_dev *pdev;
+ int rc;
+
+ if (_machine != _MACH_Pmac)
+ return 0;
+
+ planb_devices = find_devices("planb");
+ if (planb_devices == 0) {
+ planb_num=0;
+ printk(KERN_WARNING "PlanB: no device found!\n");
+ return planb_num;
+ }
+
+ if (planb_devices->next != NULL)
+ printk(KERN_ERR "Warning: only using first PlanB device!\n");
+ pb = &planbs[0];
+ planb_num = 1;
+
+ if (planb_devices->n_addrs != 1) {
+ printk (KERN_WARNING "PlanB: expecting 1 address for planb "
+ "(got %d)", planb_devices->n_addrs);
+ return 0;
+ }
+
+ if (planb_devices->n_intrs == 0) {
+ printk(KERN_WARNING "PlanB: no intrs for device %s\n",
+ planb_devices->full_name);
+ return 0;
+ } else {
+ irq = planb_devices->intrs[0].line;
+ }
+
+ /* Initialize PlanB's PCI registers */
+
+ /* There is a bug with the way OF assigns addresses
+ to the devices behind the chaos bridge.
+ control needs only 0x1000 of space, but decodes only
+ the upper 16 bits. It therefore occupies a full 64K.
+ OF assigns the planb controller memory within this space;
+ so we need to change that here in order to access planb. */
+
+ /* We remap to 0xf1000000 in hope that nobody uses it ! */
+
+ bus = (planb_devices->addrs[0].space >> 16) & 0xff;
+ dev_fn = (planb_devices->addrs[0].space >> 8) & 0xff;
+ confreg = planb_devices->addrs[0].space & 0xff;
+ old_base = planb_devices->addrs[0].address;
+ new_base = 0xf1000000;
+
+ DEBUG("PlanB: Found on bus %d, dev %d, func %d, "
+ "membase 0x%x (base reg. 0x%x)\n",
+ bus, PCI_SLOT(dev_fn), PCI_FUNC(dev_fn), old_base, confreg);
+
+ pdev = pci_find_slot (bus, dev_fn);
+ if (!pdev) {
+ printk(KERN_ERR "planb: cannot find slot\n");
+ goto err_out;
+ }
+
+ /* Enable response in memory space, bus mastering,
+ use memory write and invalidate */
+ rc = pci_enable_device(pdev);
+ if (rc) {
+ printk(KERN_ERR "planb: cannot enable PCI device %s\n",
+ pci_name(pdev));
+ goto err_out;
+ }
+ rc = pci_set_mwi(pdev);
+ if (rc) {
+ printk(KERN_ERR "planb: cannot enable MWI on PCI device %s\n",
+ pci_name(pdev));
+ goto err_out_disable;
+ }
+ pci_set_master(pdev);
+
+ /* Set the new base address */
+ pci_write_config_dword (pdev, confreg, new_base);
+
+ planb_regs = (volatile struct planb_registers *)
+ ioremap (new_base, 0x400);
+ pb->planb_base = planb_regs;
+ pb->planb_base_phys = (struct planb_registers *)new_base;
+ pb->irq = irq;
+
+ return planb_num;
+
+err_out_disable:
+ pci_disable_device(pdev);
+err_out:
+ /* FIXME handle error */ /* comment moved from pci_find_slot, above */
+ return 0;
+}
+
+static void release_planb(void)
+{
+ int i;
+ struct planb *pb;
+
+ for (i=0;i<planb_num; i++)
+ {
+ pb=&planbs[i];
+
+ /* stop and flash DMAs unconditionally */
+ planb_dbdma_stop(&pb->planb_base->ch2);
+ planb_dbdma_stop(&pb->planb_base->ch1);
+
+ /* clear and free interrupts */
+ pb->intr_mask = PLANB_CLR_IRQ;
+ out_le32 (&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
+ free_irq(pb->irq, pb);
+
+ /* make sure all allocated memory are freed */
+ planb_prepare_close(pb);
+
+ printk(KERN_INFO "PlanB: unregistering with v4l\n");
+ video_unregister_device(&pb->video_dev);
+
+ /* note that iounmap() does nothing on the PPC right now */
+ iounmap ((void *)pb->planb_base);
+ }
+}
+
+static int __init init_planbs(void)
+{
+ int i;
+
+ if (find_planb()<=0)
+ return -EIO;
+
+ for (i=0; i<planb_num; i++) {
+ if (init_planb(&planbs[i])<0) {
+ printk(KERN_ERR "PlanB: error registering device %d"
+ " with v4l\n", i);
+ release_planb();
+ return -EIO;
+ }
+ printk(KERN_INFO "PlanB: registered device %d with v4l\n", i);
+ }
+ return 0;
+}
+
+static void __exit exit_planbs(void)
+{
+ release_planb();
+}
+
+module_init(init_planbs);
+module_exit(exit_planbs);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 08:01:35 +0000