patch-2.4.22 linux-2.4.22/drivers/media/video/swarm_saa7114h.c
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- Lines: 1696
- Date:
2003-08-25 04:44:42.000000000 -0700
- Orig file:
linux-2.4.21/drivers/media/video/swarm_saa7114h.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/drivers/media/video/swarm_saa7114h.c linux-2.4.22/drivers/media/video/swarm_saa7114h.c
@@ -0,0 +1,1695 @@
+/*
+ saa7114h - Philips SAA7114H video decoder driver
+
+ Copyright (C) 2001,2002,2003 Broadcom Corporation
+
+ From saa7111.c:
+ Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+ From cpia.c:
+ (C) Copyright 1999-2000 Peter Pregler
+ (C) Copyright 1999-2000 Scott J. Bertin
+ (C) Copyright 1999-2000 Johannes Erdfelt <johannes@erdfelt.com>
+
+ 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.
+ */
+
+/*
+ * Important note: this driver is reasonably functional, and has been
+ * tested with the "camserv" v4l application. But it primarily a
+ * proof-of-concept, and example for setting up FIFO-mode.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ctype.h>
+#include <linux/fs.h>
+#include <linux/vmalloc.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/signal.h>
+#include <linux/proc_fs.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 <linux/smp_lock.h>
+#include <asm/hardirq.h>
+
+#include <linux/i2c.h>
+#include <linux/videodev.h>
+#include <linux/version.h>
+#include <asm/uaccess.h>
+
+#include <linux/i2c-algo-sibyte.h>
+
+#include <asm/sibyte/64bit.h>
+#include <asm/sibyte/sb1250_regs.h>
+#include <asm/sibyte/sb1250_int.h>
+#include <asm/sibyte/sb1250_mac.h>
+#include <asm/sibyte/sb1250_dma.h>
+
+#define SAA_BRIGHTNESS 0x0a
+#define SAA_CONTRAST 0x0b
+#define SAA_SATURATION 0x0c
+#define SAA_HUE 0x0d
+
+#define DECODER_STATUS 0x1f
+#define SLICER_STATUS_0 0x60
+#define SLICER_STATUS_1 0x61
+#define SLICER_STATUS_2 0x62
+#define SCALER_STATUS 0x8f
+
+#define NUM_FRAME 2
+#define MAX_HORIZ 720
+#define MAX_VERT 480
+#define MIN_HORIZ 180
+#define MIN_VERT 120
+#define MAX_PER_PIXEL 3
+#define MAX_FRAME_SIZE (MAX_HORIZ*MAX_VERT*MAX_PER_PIXEL)
+#define MAX_MMAP_SIZE (PAGE_ALIGN(MAX_FRAME_SIZE*NUM_FRAME))
+#define RAW_PER_PIXEL 2
+#define RAW_LINE_PAD 8
+#define RAW_LINE_SIZE (((MAX_HORIZ*RAW_PER_PIXEL)+RAW_LINE_PAD+0x1f) & ~0x1f)
+#define RAW_FRAME_SIZE (RAW_LINE_SIZE*MAX_VERT)
+
+#define NUM_DESCR 64
+#define INTR_PKT_CNT 8
+
+/* Extensions to videodev.h IOCTL definitions */
+#define VIDIOREADREG _IOR('v', 50, int)
+#define VIDIOWRITEREG _IOW('v', 50, int)
+#define VIDIOGRABFRAME _IOR('v', 51, int)
+#define VIDIOSHOWEAV _IOR('v', 52, int)
+
+#define IF_NAME "saa7114h"
+
+#define MAC2_CSR(r) (KSEG1 + A_MAC_REGISTER(2, r))
+#define MAC2_DMARX0_CSR(r) (KSEG1 + A_MAC_DMA_REGISTER(2, DMA_RX, 0, r))
+
+/* Options */
+#define DMA_DEINTERLACE 1
+#define LAZY_READ 1
+#define NULL_DMA 0
+
+/* Debug filters */
+#define DBG_NULL 0x0000
+#define DBG_IO 0x0001
+#define DBG_DESCR 0x0002
+#define DBG_INTR 0x0004
+#define DBG_CONVERT 0x0008
+#define DBG_FRAMING 0x0010
+#define DBG_REGISTER 0x0020
+#define DBG_CALL 0x0040
+#define DBG_FRAMING_LOUD 0x0080
+
+/* XXXKW make this settable through /proc... */
+#define DEBUG_LVL (DBG_NULL)
+
+#if DEBUG_LVL
+#define DBG(l, p) do { if (DEBUG_LVL & l) p; } while (0)
+#else
+#define DBG(l, p)
+#endif
+
+/* ----------------------------------------------------------------------- */
+
+enum {
+ FRAME_READY, /* Ready to grab into */
+ FRAME_GRABBING, /* In the process of being grabbed into */
+ FRAME_DONE, /* Finished grabbing, but not been synced yet */
+ FRAME_UNUSED, /* Unused (belongs to driver, but can't be used) */
+};
+
+struct saa_frame {
+ uint8_t *data;
+ uint8_t *pos;
+ int width;
+ int height;
+ uint32_t size;
+ volatile int state;
+ wait_queue_head_t read_wait;
+};
+
+typedef struct fifo_descr_s {
+ uint64_t descr_a;
+ uint64_t descr_b;
+} fifo_descr_t;
+
+typedef unsigned long paddr_t;
+
+typedef struct fifo_s {
+ unsigned ringsz;
+ fifo_descr_t *descrtab;
+ fifo_descr_t *descrtab_end;
+ fifo_descr_t *next_descr;
+ paddr_t descrtab_phys;
+ void *dma_buf; /* DMA buffer */
+} fifo_t;
+
+struct saa7114h {
+ struct i2c_client *client;
+ struct video_device *vd;
+ struct video_window vw;
+ struct video_picture vp;
+ uint8_t reg[256];
+
+ fifo_t ff;
+ void *frame_buf; /* hold frames for the client */
+ struct saa_frame frame[NUM_FRAME]; /* point into frame_buf */
+ int hwframe;
+ int swframe;
+
+ uint16_t depth;
+ uint16_t palette;
+ uint8_t bright;
+ uint8_t contrast;
+ uint8_t hue;
+ uint8_t sat;
+
+ struct proc_dir_entry *proc_entry;
+ struct semaphore param_lock;
+ struct semaphore busy_lock;
+
+ int dma_enable;
+ int opened;
+ int irq;
+ int interlaced;
+};
+
+static int saa7114h_probe(struct i2c_adapter *adap);
+static int saa7114h_detach(struct i2c_client *device);
+
+struct i2c_driver i2c_driver_saa7114h =
+{
+ name: "saa7114h", /* name */
+ id: I2C_DRIVERID_SAA7114H, /* ID */
+ flags: I2C_DF_NOTIFY, /* XXXKW do I care? */
+ attach_adapter: saa7114h_probe,
+ detach_client: saa7114h_detach
+};
+
+/* -----------------------------------------------------------------------
+ * VM assist for MMAPed space
+ * ----------------------------------------------------------------------- */
+
+/* Given PGD from the address space's page table, return the kernel
+ * virtual mapping of the physical memory mapped at ADR.
+ */
+static inline unsigned long uvirt_to_kva(pgd_t *pgd, unsigned long adr)
+{
+ unsigned long ret = 0UL;
+ pmd_t *pmd;
+ pte_t *ptep, pte;
+
+ if (!pgd_none(*pgd)) {
+ pmd = pmd_offset(pgd, adr);
+ if (!pmd_none(*pmd)) {
+ ptep = pte_offset(pmd, adr);
+ pte = *ptep;
+ if (pte_present(pte)) {
+ ret = (unsigned long) page_address(pte_page(pte));
+ ret |= (adr & (PAGE_SIZE-1));
+ }
+ }
+ }
+ return ret;
+}
+
+/* Here we want the physical address of the memory.
+ * This is used when initializing the contents of the
+ * area and marking the pages as reserved.
+ */
+static inline unsigned long kvirt_to_pa(unsigned long adr)
+{
+ unsigned long va, kva, ret;
+
+ va = VMALLOC_VMADDR(adr);
+ kva = uvirt_to_kva(pgd_offset_k(va), va);
+ ret = __pa(kva);
+ return ret;
+}
+
+static void *rvmalloc(unsigned long size)
+{
+ void *mem;
+ unsigned long adr, page;
+
+ /* Round it off to PAGE_SIZE */
+ size += (PAGE_SIZE - 1);
+ size &= ~(PAGE_SIZE - 1);
+
+ mem = vmalloc_32(size);
+ if (!mem)
+ return NULL;
+
+ memset(mem, 0, size); /* Clear the ram out, no junk to the user */
+ adr = (unsigned long) mem;
+ while (size > 0) {
+ page = kvirt_to_pa(adr);
+ mem_map_reserve(virt_to_page(__va(page)));
+ adr += PAGE_SIZE;
+ if (size > PAGE_SIZE)
+ size -= PAGE_SIZE;
+ else
+ size = 0;
+ }
+
+ return mem;
+}
+
+static void rvfree(void *mem, unsigned long size)
+{
+ unsigned long adr, page;
+
+ if (!mem)
+ return;
+
+ size += (PAGE_SIZE - 1);
+ size &= ~(PAGE_SIZE - 1);
+
+ adr = (unsigned long) mem;
+ while (size > 0) {
+ page = kvirt_to_pa(adr);
+ mem_map_unreserve(virt_to_page(__va(page)));
+ adr += PAGE_SIZE;
+ if (size > PAGE_SIZE)
+ size -= PAGE_SIZE;
+ else
+ size = 0;
+ }
+ vfree(mem);
+}
+
+/* -----------------------------------------------------------------------
+ * Control interface (i2c)
+ * ----------------------------------------------------------------------- */
+
+static int saa7114h_reg_read(struct saa7114h *dev, unsigned char subaddr)
+{
+ return i2c_smbus_read_byte_data(dev->client, subaddr);
+}
+
+static int saa7114h_reg_write(struct saa7114h *dev, unsigned char subaddr, int data)
+{
+ return i2c_smbus_write_byte_data(dev->client, subaddr, data & 0xff);
+}
+
+static int saa7114h_reg_init(struct saa7114h *dev, unsigned const char *data, unsigned int len)
+{
+ int rc = 0;
+ int val;
+
+ while (len && !rc) {
+ dev->reg[data[0]] = data[1];
+ rc = saa7114h_reg_write(dev, data[0], data[1]);
+ if (!rc && (data[0] != 0)) {
+ val = saa7114h_reg_read(dev, data[0]);
+ if ((val < 0) || (val != data[1])) {
+ printk(KERN_ERR
+ IF_NAME ": init readback mismatch reg %02x = %02x (should be %02x)\n",
+ data[0], val, data[1]);
+ }
+ }
+ len -= 2;
+ data += 2;
+ }
+ return rc;
+}
+
+/* -----------------------------------------------------------------------
+ * /proc interface
+ * ----------------------------------------------------------------------- */
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *saa7114h_proc_root=NULL;
+
+static int decoder_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *out = page;
+ int len, status;
+ struct saa7114h *decoder = data;
+
+ out += sprintf(out, " SWARM saa7114h\n------------------\n");
+ status = saa7114h_reg_read(decoder, DECODER_STATUS);
+ out += sprintf(out, " Decoder status = %02x\n", status);
+ if (status & 0x80)
+ out += sprintf(out, " interlaced\n");
+ if (status & 0x40)
+ out += sprintf(out, " not locked\n");
+ if (status & 0x02)
+ out += sprintf(out, " Macrovision detected\n");
+ if (status & 0x01)
+ out += sprintf(out, " color\n");
+ out += sprintf(out, " Brightness = %02x\n", decoder->bright);
+ out += sprintf(out, " Contrast = %02x\n", decoder->contrast);
+ out += sprintf(out, " Saturation = %02x\n", decoder->sat);
+ out += sprintf(out, " Hue = %02x\n\n", decoder->hue);
+
+ out += sprintf(out, " Scaler status = %02x\n",
+ (int)saa7114h_reg_read(decoder, SCALER_STATUS));
+
+ len = out - page;
+ len -= off;
+ if (len < count) {
+ *eof = 1;
+ if (len <= 0) return 0;
+ } else
+ len = count;
+
+ *start = page + off;
+ return len;
+}
+
+static int decoder_write_proc(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct saa7114h *d = data;
+ int retval;
+ unsigned int cmd, reg, reg_val;
+
+ if (down_interruptible(&d->param_lock))
+ return -ERESTARTSYS;
+
+#define VALUE \
+ ({ \
+ char *_p; \
+ unsigned long int _ret; \
+ while (count && isspace(*buffer)) { \
+ buffer++; \
+ count--; \
+ } \
+ _ret = simple_strtoul(buffer, &_p, 16); \
+ if (_p == buffer) \
+ retval = -EINVAL; \
+ else { \
+ count -= _p - buffer; \
+ buffer = _p; \
+ } \
+ _ret; \
+ })
+
+ retval = 0;
+ while (count && !retval) {
+ cmd = VALUE;
+ if (retval)
+ break;
+ switch (cmd) {
+ case 1:
+ reg = VALUE;
+ if (retval)
+ break;
+ reg_val = VALUE;
+ if (retval)
+ break;
+ printk(IF_NAME ": write reg %x <- %x\n", reg, reg_val);
+ if (saa7114h_reg_write(d, reg, reg_val) == -1)
+ retval = -EINVAL;
+ break;
+ case 2:
+ reg = VALUE;
+ if (retval)
+ break;
+ reg_val = saa7114h_reg_read(d, reg);
+ if (reg_val == -1)
+ retval = -EINVAL;
+ else
+ printk(IF_NAME ": read reg %x -> %x\n", reg, reg_val);
+ break;
+ default:
+ break;
+ }
+ }
+ up(&d->param_lock);
+
+ return retval;
+}
+
+static void create_proc_decoder(struct saa7114h *decoder)
+{
+ char name[8];
+ struct proc_dir_entry *ent;
+
+ if (!saa7114h_proc_root || !decoder)
+ return;
+
+ sprintf(name, "video%d", decoder->vd->minor);
+
+ ent = create_proc_entry(name, S_IFREG|S_IRUGO|S_IWUSR, saa7114h_proc_root);
+ if (!ent) {
+ printk(KERN_INFO IF_NAME ": Unable to initialize /proc/saa7114h/%s\n", name);
+ return;
+ }
+
+ ent->data = decoder;
+ ent->read_proc = decoder_read_proc;
+ ent->write_proc = decoder_write_proc;
+ ent->size = 3626; /* XXXKW ??? */
+ decoder->proc_entry = ent;
+}
+
+static void destroy_proc_decoder(struct saa7114h *decoder)
+{
+ char name[7];
+
+ if (!decoder || !decoder->proc_entry)
+ return;
+
+ sprintf(name, "video%d", decoder->vd->minor);
+ remove_proc_entry(name, saa7114h_proc_root);
+ decoder->proc_entry = NULL;
+}
+
+static void proc_saa7114h_create(void)
+{
+ saa7114h_proc_root = create_proc_entry("saa7114h", S_IFDIR, 0);
+
+ if (saa7114h_proc_root)
+ saa7114h_proc_root->owner = THIS_MODULE;
+ else
+ printk(KERN_INFO IF_NAME ": Unable to initialize /proc/saa7114h\n");
+}
+
+static void proc_saa7114h_destroy(void)
+{
+ remove_proc_entry("saa7114h", 0);
+}
+#endif /* CONFIG_PROC_FS */
+
+
+/* -----------------------------------------------------------------------
+ * Initialization
+ * ----------------------------------------------------------------------- */
+
+static int dma_setup(struct saa7114h *d)
+{
+ int i;
+ void *curbuf;
+
+ /* Reset the port */
+ out64(M_MAC_PORT_RESET, MAC2_CSR(R_MAC_ENABLE));
+ in64(MAC2_CSR(R_MAC_ENABLE));
+
+ /* Zero everything out, disable filters */
+ out64(0, MAC2_CSR(R_MAC_TXD_CTL));
+ out64(M_MAC_ALLPKT_EN, MAC2_CSR(R_MAC_ADFILTER_CFG));
+ out64(V_MAC_RX_RD_THRSH(4) | V_MAC_RX_RL_THRSH(4),
+ MAC2_CSR(R_MAC_THRSH_CFG));
+ for (i=0; i<MAC_CHMAP_COUNT; i++) {
+ out64(0, MAC2_CSR(R_MAC_CHLO0_BASE+(i*8)));
+ out64(0, MAC2_CSR(R_MAC_CHUP0_BASE+(i*8)));
+ }
+ for (i=0; i<MAC_HASH_COUNT; i++) {
+ out64(0, MAC2_CSR(R_MAC_HASH_BASE+(i*8)));
+ }
+ for (i=0; i<MAC_ADDR_COUNT; i++) {
+ out64(0, MAC2_CSR(R_MAC_ADDR_BASE+(i*8)));
+ }
+
+ out64(V_MAC_MAX_FRAMESZ(16*1024) | V_MAC_MIN_FRAMESZ(0),
+ MAC2_CSR(R_MAC_FRAMECFG));
+
+ /* Select bypass mode */
+ out64((M_MAC_BYPASS_SEL | V_MAC_BYPASS_CFG(K_MAC_BYPASS_EOP) |
+ M_MAC_FC_SEL | M_MAC_SS_EN | V_MAC_SPEED_SEL_1000MBPS),
+ MAC2_CSR(R_MAC_CFG));
+
+ /* Set up the descriptor table */
+ d->ff.descrtab = kmalloc(NUM_DESCR * sizeof(fifo_descr_t), GFP_KERNEL);
+ d->ff.descrtab_phys = __pa(d->ff.descrtab);
+ d->ff.descrtab_end = d->ff.descrtab + NUM_DESCR;
+ d->ff.next_descr = d->ff.descrtab;
+ d->ff.ringsz = NUM_DESCR;
+#if 0
+ /* XXXKW this won't work because the physical may not be
+ contiguous; how do I handle a bigger alloc then? */
+ d->ff.dma_buf = rvmalloc(RAW_LINE_SIZE*NUM_DESCR);
+ printk(KERN_DEBUG IF_NAME ": DMA buffer allocated (%p)\n",
+ d->ff.dma_buf);
+#else
+ d->ff.dma_buf = kmalloc(RAW_LINE_SIZE*NUM_DESCR, GFP_KERNEL);
+#endif
+ if (!d->ff.dma_buf) {
+ printk(KERN_ERR IF_NAME ": couldn't allocate DMA buffer\n");
+ return -ENOMEM;
+ }
+ memset(d->ff.dma_buf, 0, RAW_LINE_SIZE*NUM_DESCR);
+
+ for (i=0, curbuf=d->ff.dma_buf; i<d->ff.ringsz; i++, curbuf+=RAW_LINE_SIZE) {
+ d->ff.descrtab[i].descr_a = (__pa(curbuf) |
+ V_DMA_DSCRA_A_SIZE(RAW_LINE_SIZE >> 5));
+ d->ff.descrtab[i].descr_b = 0;
+ }
+
+ out64(V_DMA_INT_PKTCNT(INTR_PKT_CNT) | M_DMA_EOP_INT_EN |
+ V_DMA_RINGSZ(d->ff.ringsz) | M_DMA_TDX_EN,
+ MAC2_DMARX0_CSR(R_MAC_DMA_CONFIG0));
+ out64(M_DMA_L2CA, MAC2_DMARX0_CSR(R_MAC_DMA_CONFIG1));
+ out64(d->ff.descrtab_phys, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_BASE));
+
+ /* Enable interrupts and DMA */
+ out64(M_MAC_INT_EOP_COUNT<<S_MAC_RX_CH0, MAC2_CSR(R_MAC_INT_MASK));
+ out64(M_MAC_RXDMA_EN0 | M_MAC_BYP_RX_ENABLE, MAC2_CSR(R_MAC_ENABLE));
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------
+ * v4linux helpers - color conversion, etc (taken from cpia.c)
+ * ----------------------------------------------------------------------- */
+
+#define LIMIT(x) ((((x)>0xffffff)?0xff0000:(((x)<=0xffff)?0:(x)&0xff0000))>>16)
+
+static void yuvconvert_inplace(uint8_t *data, uint32_t in_uyvy, int out_fmt, int mmap)
+{
+ int y, u, v, r, g, b, y1;
+ uint8_t *src, *dst;
+
+ if (out_fmt == VIDEO_PALETTE_RGB24) {
+ src = (uint8_t *)((int)data + in_uyvy);
+ dst = (uint8_t *)((int)data + in_uyvy + (in_uyvy >> 1));
+ DBG(DBG_CONVERT, printk(KERN_DEBUG "inplace: %p %p %p\n", data, src, dst));
+ while (src > data) {
+ if ((int)(src-data) < 4)
+ break;
+ //printk("freaky %p %p\n", src, data);
+ y1 = (*(--src) - 16) * 76310;
+ v = *(--src) - 128;
+ y = (*(--src) - 16) * 76310;
+ u = *(--src) - 128;
+ r = 104635 * v;
+ g = -25690 * u + -53294 * v;
+ b = 132278 * u;
+ /* XXXKW what on earth is up with mmap? */
+ if (mmap) {
+ *(--dst) = LIMIT(r+y1);
+ *(--dst) = LIMIT(g+y1);
+ *(--dst) = LIMIT(b+y1);
+ *(--dst) = LIMIT(r+y);
+ *(--dst) = LIMIT(g+y);
+ *(--dst) = LIMIT(b+y);
+ } else {
+ *(--dst) = LIMIT(b+y1);
+ *(--dst) = LIMIT(g+y1);
+ *(--dst) = LIMIT(r+y1);
+ *(--dst) = LIMIT(b+y);
+ *(--dst) = LIMIT(g+y);
+ *(--dst) = LIMIT(r+y);
+ }
+ }
+ }
+}
+
+static int saa7114h_get_cparams(struct saa7114h *decoder)
+{
+ /* XXX check for error code */
+ decoder->bright = saa7114h_reg_read(decoder, SAA_BRIGHTNESS);
+ decoder->contrast = saa7114h_reg_read(decoder, SAA_CONTRAST);
+ decoder->sat = saa7114h_reg_read(decoder, SAA_SATURATION);
+ decoder->hue = saa7114h_reg_read(decoder, SAA_HUE);
+
+ decoder->vp.brightness = (uint16_t)decoder->bright << 8;
+ decoder->vp.contrast = (uint16_t)decoder->contrast << 9;
+ decoder->vp.colour = decoder->sat << 9;
+ decoder->vp.hue = ((int16_t)decoder->hue + 128) << 8;
+ return 0;
+}
+
+static int saa7114h_set_cparams(struct saa7114h *decoder)
+{
+ decoder->bright = decoder->vp.brightness >> 8;
+ decoder->contrast = decoder->vp.contrast >> 9;
+ decoder->sat = decoder->vp.colour >> 9;
+ decoder->hue = (uint8_t)((int8_t)(decoder->vp.hue >> 8) - 128);
+
+ return (saa7114h_reg_write(decoder, SAA_BRIGHTNESS, decoder->bright) ||
+ saa7114h_reg_write(decoder, SAA_CONTRAST, decoder->contrast) ||
+ saa7114h_reg_write(decoder, SAA_SATURATION, decoder->sat) ||
+ saa7114h_reg_write(decoder, SAA_HUE, decoder->hue));
+}
+
+/* -----------------------------------------------------------------------
+ * Custom IOCTL support
+ * ----------------------------------------------------------------------- */
+
+unsigned char eav[625][2];
+static int grab_frame(struct saa7114h *d, void *user_buf, int print_eav)
+{
+ int cur_idx = 0;
+ int to_go = 625;
+ int delta;
+ int i, len, eav_val, sav_val;
+ int started = 0;
+ uint8_t *buf;
+ fifo_descr_t *cur_d;
+ int swptr = d->ff.next_descr - d->ff.descrtab;
+ int hwptr;
+
+ DBG(DBG_CALL, printk(IF_NAME ": grabbing frame\n"));
+
+ /* Check for Macrovision -- if it's on, DMA won't happen */
+ if (saa7114h_reg_read(d, DECODER_STATUS) & 0x2)
+ return -EACCES;
+
+ out64(d->ff.ringsz, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ do {
+ hwptr = (unsigned) (((in64(MAC2_DMARX0_CSR(R_MAC_DMA_CUR_DSCRADDR)) &
+ M_DMA_CURDSCR_ADDR) -
+ d->ff.descrtab_phys) /
+ sizeof(fifo_descr_t));
+ delta = (hwptr + d->ff.ringsz - swptr) % d->ff.ringsz;
+
+ if (delta == 0) {
+#if 0
+ uint64_t val = in64(MAC2_DMARX0_CSR(R_MAC_STATUS));
+ printk("mac status: %08x%08x\n",
+ (u32)(val >> 32), (u32)(val&0xffffffff));
+#endif
+ }
+
+ for (i=0; i<delta; i++) {
+ cur_d = d->ff.next_descr;
+ if (++d->ff.next_descr == d->ff.descrtab_end)
+ d->ff.next_descr = d->ff.descrtab;
+
+ if (!(cur_d->descr_a & M_DMA_ETHRX_SOP)) {
+ printk("bogus RX\n");
+ continue;
+ }
+ cur_d->descr_a &= ~M_DMA_ETHRX_SOP;
+ len = G_DMA_DSCRB_PKT_SIZE(cur_d->descr_b);
+ buf = (uint8_t *)__va(cur_d->descr_a & M_DMA_DSCRA_A_ADDR);
+ if (len != (d->vw.width*RAW_PER_PIXEL)+RAW_LINE_PAD) {
+ printk("funny size %d\n", len);
+ continue;
+ }
+ eav_val = buf[1];
+ sav_val = buf[5];
+ if (eav_val == 0xf1) { /* end of field 2, V-blank */
+ if (started) {
+ started = 0;
+ delta = to_go = 0;
+ /* just let DMA finish in background */
+ } else {
+ started = 1;
+ }
+ }
+ if (started) {
+ eav[cur_idx][0] = eav_val;
+ eav[cur_idx++][1] = sav_val;
+ if (copy_to_user(user_buf, &buf[6], 1440))
+ return -EFAULT;
+ user_buf += 1440;
+ }
+ }
+ swptr = hwptr;
+ if (delta) {
+ if (started)
+ to_go -= delta;
+ if (delta > to_go)
+ delta = to_go;
+ out64(delta, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ }
+ } while (to_go);
+
+ if (print_eav) {
+ for (i=0; i<cur_idx; i++) {
+ printk("%3d: %02x | %02x\n", i, eav[i][0], eav[i][1]);
+ }
+ }
+
+ return cur_idx;
+}
+
+/* -----------------------------------------------------------------------
+ * Interrupt handler
+ * ----------------------------------------------------------------------- */
+
+unsigned long int_count = 0;
+
+static void saa7114h_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct saa7114h *d = dev_id;
+ uint64_t status_val;
+ fifo_descr_t *cur_d;
+ int i, delta, len;
+ uint8_t *buf, eav_val;
+ int swptr = d->ff.next_descr - d->ff.descrtab;
+ int hwptr;
+
+ status_val = in64(MAC2_CSR(R_MAC_STATUS));
+
+ /* Process finished decsriptors */
+ hwptr = (unsigned) (((in64(MAC2_DMARX0_CSR(R_MAC_DMA_CUR_DSCRADDR)) &
+ M_DMA_CURDSCR_ADDR) - d->ff.descrtab_phys) /
+ sizeof(fifo_descr_t));
+ delta = (hwptr + d->ff.ringsz - swptr) % d->ff.ringsz;
+ if (!delta) {
+ if (status_val & M_MAC_INT_EOP_SEEN<<S_MAC_RX_CH0) {
+ /* Must have wrapped since the last interrupt */
+ delta = d->ff.ringsz;
+ } else {
+ /* XXXKW why would this happen? */
+ return;
+ }
+ }
+
+ for (i=0; i<delta; i++) {
+ cur_d = d->ff.next_descr;
+ if (++d->ff.next_descr == d->ff.descrtab_end)
+ d->ff.next_descr = d->ff.descrtab;
+
+ if (!(cur_d->descr_a & M_DMA_ETHRX_SOP)) {
+ printk(KERN_DEBUG "bogus RX\n");
+ continue;
+ }
+ cur_d->descr_a &= ~M_DMA_ETHRX_SOP;
+ if (!d->dma_enable)
+ continue;
+
+ len = G_DMA_DSCRB_PKT_SIZE(cur_d->descr_b);
+ buf = (uint8_t *)__va(cur_d->descr_a & M_DMA_DSCRA_A_ADDR);
+ if (len != (d->vw.width*RAW_PER_PIXEL)+RAW_LINE_PAD) {
+ printk(KERN_DEBUG "funny size %d\n", len);
+// continue;
+ }
+ len -= RAW_LINE_PAD;
+ eav_val = buf[1];
+ DBG(DBG_FRAMING_LOUD,
+ printk(KERN_DEBUG "eav: %02x len: %d\n", eav_val, len));
+ if (eav_val == 0xf1) { /* end of field 2, V-blank: start-of-frame */
+ switch (d->frame[d->hwframe].state) {
+ case FRAME_UNUSED:
+ DBG(DBG_FRAMING,
+ printk(KERN_ERR "capture to unused frame %d\n",
+ d->hwframe));
+ break;
+ case FRAME_READY:
+ DBG(DBG_FRAMING,
+ printk(KERN_DEBUG "frame started %d\n",
+ d->hwframe));
+ /* start this frame (skip eav/sav) */
+ memcpy(d->frame[d->hwframe].pos, &buf[6], len);
+#if DMA_DEINTERLACE
+ if (!d->interlaced)
+ memcpy(d->frame[d->hwframe].pos-len, &buf[6], len);
+ d->frame[d->hwframe].pos += len*2;
+#else
+ d->frame[d->hwframe].pos += len;
+#endif
+ d->frame[d->hwframe].state = FRAME_GRABBING;
+ /* XXXKW check pos overflow */
+ break;
+ case FRAME_GRABBING:
+ /* kick over to new frame */
+ d->frame[d->hwframe].size = d->frame[d->hwframe].pos -
+ d->frame[d->hwframe].data;
+ d->frame[d->hwframe].state = FRAME_DONE;
+ DBG(DBG_FRAMING,
+ printk(KERN_DEBUG "frame finished %d\n",
+ d->frame[d->hwframe].size));
+ /* wake up a waiting reader */
+ DBG(DBG_IO, printk(KERN_DEBUG "wakeup\n"));
+ wake_up(&d->frame[d->hwframe].read_wait);
+ d->hwframe = (d->hwframe + 1) % NUM_FRAME;
+ if (d->frame[d->hwframe].state == FRAME_READY) {
+ /* start this frame */
+ DBG(DBG_FRAMING,
+ printk(KERN_DEBUG "frame bumped %d\n",
+ d->hwframe));
+ memcpy(d->frame[d->hwframe].pos, &buf[6], len);
+#if DMA_DEINTERLACE
+ if (!d->interlaced)
+ memcpy(d->frame[d->hwframe].pos-len, &buf[6], len);
+ d->frame[d->hwframe].pos += len*2;
+#else
+ d->frame[d->hwframe].pos += len;
+#endif
+ d->frame[d->hwframe].state = FRAME_GRABBING;
+ } else {
+ /* drop on the floor,
+ note that we've stopped DMA'ing */
+ DBG(DBG_FRAMING,
+ printk(KERN_DEBUG "frame capture halted\n"));
+ d->dma_enable = 0;
+ }
+ break;
+ case FRAME_DONE:
+ /* drop on the floor (must be waiting for sw) */
+ DBG(DBG_FRAMING,
+ printk(KERN_DEBUG "frame capture halted\n"));
+ d->dma_enable = 0;
+ break;
+ }
+ } else {
+ switch (d->frame[d->hwframe].state) {
+ case FRAME_UNUSED:
+ DBG(DBG_FRAMING,
+ printk(KERN_ERR "capture to unused frame %d\n",
+ d->hwframe));
+ break;
+ case FRAME_READY:
+ /* drop on the floor (must have dropped something) */
+ DBG(DBG_FRAMING_LOUD,
+ printk(KERN_DEBUG "missed SOF\n"));
+ break;
+ case FRAME_DONE:
+ /* drop on the floor (must be waiting for sw) */
+ DBG(DBG_FRAMING,
+ printk(KERN_DEBUG "frame overflow\n"));
+ d->dma_enable = 0;
+ break;
+ case FRAME_GRABBING:
+#if DMA_DEINTERLACE
+ if (eav_val == 0xb6) {
+ d->frame[d->hwframe].pos = d->frame[d->hwframe].data;
+ }
+ memcpy(d->frame[d->hwframe].pos, &buf[6], len);
+ if (!d->interlaced)
+ memcpy(d->frame[d->hwframe].pos-len, &buf[6], len);
+ d->frame[d->hwframe].pos += len*2;
+#else
+ memcpy(d->frame[d->hwframe].pos, &buf[6], len);
+ d->frame[d->hwframe].pos += len;
+#endif
+ /* XXXKW check pos overflow */
+ break;
+ }
+ }
+ }
+
+ if (d->dma_enable) {
+ out64(delta, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ DBG(DBG_DESCR,
+ printk(KERN_DEBUG IF_NAME ": interrupt adds %d -> %d descrs\n",
+ delta, (int)in64(MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT))));
+ }
+}
+
+/* -----------------------------------------------------------------------
+ * /dev/video interface
+ * ----------------------------------------------------------------------- */
+
+static int saa7114h_open(struct video_device *vd, int nb)
+{
+ struct saa7114h *d = vd->priv;
+ uint32_t status;
+
+ if (!d || d->opened)
+ return -EBUSY;
+
+ d->opened = 1;
+ DBG(DBG_CALL, printk(KERN_DEBUG IF_NAME ": open\n"));
+
+ /* XXKW Should check this periodically!? */
+ status = saa7114h_reg_read(d, DECODER_STATUS);
+ d->interlaced = ((status & 0x80) != 0);
+
+#if !NULL_DMA
+ if (d->dma_enable) {
+ printk(IF_NAME ": open found DMA on?!\n");
+#if LAZY_READ
+ }
+#else
+ } else {
+ int descr;
+ d->dma_enable = 1;
+ DBG(DBG_DESCR, printk(IF_NAME ": open enabling DMA\n"));
+ /* Force capture to start into frame buffer 0 */
+ descr = in64(MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ DBG(DBG_DESCR,
+ printk(IF_NAME ": open adds %d -> %d descrs\n",
+ d->ff.ringsz-desc, descr));
+ out64(d->ff.ringsz-descr, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ }
+#endif
+#endif
+
+ return 0;
+}
+
+static void saa7114h_release(struct video_device *vd)
+{
+ struct saa7114h *d = vd->priv;
+
+ DBG(DBG_CALL, printk(KERN_DEBUG IF_NAME ": release\n"));
+ d->opened = 0;
+ d->dma_enable = 0;
+
+ /* XXXKW do a clean drain of outstanding DMAs? toss leftover
+ buffer contents to avoid stale pictures? */
+
+ return;
+}
+
+static long saa7114h_read(struct video_device *vd, char *buf,
+ unsigned long count, int noblock)
+{
+ struct saa7114h *d = vd->priv;
+ int descr, status;
+
+ if (!d)
+ return -ENODEV;
+
+ /* XXKW Should check this periodically!? */
+ status = saa7114h_reg_read(d, DECODER_STATUS);
+// d->interlaced = ((status & 0x80) != 0);
+
+#if !NULL_DMA
+#if LAZY_READ
+ if (!d->dma_enable) {
+ DBG(DBG_DESCR, printk(KERN_DEBUG IF_NAME ": enabling DMA\n"));
+ /* Give the buffer to the DMA engine (force ptr reset) */
+ d->swframe = d->hwframe;
+ d->frame[d->swframe].state = FRAME_READY;
+#if DMA_DEINTERLACE
+ d->frame[d->swframe].pos = d->frame[d->swframe].data+d->vw.width*RAW_PER_PIXEL;
+#else
+ d->frame[d->swframe].pos = d->frame[d->swframe].data;
+#endif
+ /* Fire up the DMA engine again if it stopped */
+ d->dma_enable = 1;
+ descr = in64(MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ out64(d->ff.ringsz-descr, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ }
+#endif
+#endif
+
+ /* XXXKW mmap/read mixture could break the swframe sequence */
+
+ if (d->frame[d->swframe].state != FRAME_DONE) {
+ if (noblock)
+ return -EAGAIN;
+ else {
+ DBG(DBG_IO,
+ printk(KERN_DEBUG IF_NAME ": sleeping for frame\n"));
+ interruptible_sleep_on(&d->frame[d->swframe].read_wait);
+ DBG(DBG_IO,
+ printk(KERN_DEBUG IF_NAME ": awakened\n"));
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ }
+ }
+
+ if (count < d->frame[d->swframe].size)
+ return -EFAULT;
+
+ count = d->frame[d->swframe].size;
+ yuvconvert_inplace(d->frame[d->swframe].data, d->frame[d->swframe].size, d->vp.palette, 0);
+ copy_to_user(buf, d->frame[d->swframe].data, d->frame[d->swframe].size);
+ d->swframe = (d->swframe + 1) % NUM_FRAME;
+ /* XXXKW doesn't do format conversion!!! */
+#if !NULL_DMA
+#if !LAZY_READ
+ /* XXXKW Fire up the DMA engine again if it stopped ??? */
+ if (!d->dma_enable) {
+ DBG(DBG_DESCR, printk(KERN_DEBUG IF_NAME ": enabling DMA\n"));
+ /* Fire up the DMA engine again if it stopped */
+ d->dma_enable = 1;
+ descr = in64(MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ out64(d->ff.ringsz-descr, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ }
+#endif
+#endif
+
+ return count;
+}
+
+static int saa7114h_ioctl(struct video_device *vd, unsigned int cmd, void *arg)
+{
+ struct saa7114h *d = vd->priv;
+ int val, reg, retval = 0;
+
+ if (!d)
+ return -ENODEV;
+
+ switch (cmd) {
+ case VIDIOCGCHAN:
+ {
+ struct video_channel v;
+
+ if (copy_from_user(&v, arg, sizeof(v))) {
+ retval = -EFAULT;
+ break;
+ }
+ if (v.channel != 0) {
+ retval = -EINVAL;
+ break;
+ }
+
+ v.channel = 0;
+ strcpy(v.name, "Camera");
+ v.tuners = 0;
+ v.flags = 0;
+ v.type = VIDEO_TYPE_CAMERA;
+ v.norm = 0;
+
+ if (copy_to_user(arg, &v, sizeof(v)))
+ retval = -EFAULT;
+ break;
+ }
+
+ case VIDIOCSCHAN:
+ {
+ int v;
+
+ if (copy_from_user(&v, arg, sizeof(v)))
+ retval = -EFAULT;
+
+ if (retval == 0 && v != 0)
+ retval = -EINVAL;
+
+ break;
+ }
+
+ case VIDIOCGCAP:
+ {
+ struct video_capability b;
+
+ strcpy(b.name, "Philips SAA7114H Decoder");
+ b.type = VID_TYPE_CAPTURE /* | VID_TYPE_TELETEXT */ | VID_TYPE_SCALES;
+ b.channels = 1;
+ b.audios = 0;
+ b.maxwidth = MAX_HORIZ;
+ b.maxheight = MAX_VERT;
+ /* XXXKW find real values */
+ b.minwidth = 48;
+ b.minheight = 48;
+
+ if (copy_to_user(arg, &b, sizeof(b)))
+ retval = -EFAULT;
+
+ break;
+ }
+
+ /* image properties */
+ case VIDIOCGPICT:
+ if (copy_to_user(arg, &d->vp, sizeof(struct video_picture)))
+ retval = -EFAULT;
+ break;
+
+ case VIDIOCSPICT:
+ {
+ struct video_picture vp;
+
+ /* copy_from_user */
+ if (copy_from_user(&vp, arg, sizeof(vp))) {
+ retval = -EFAULT;
+ break;
+ }
+
+ down(&d->param_lock);
+ /* brightness, colour, contrast need not check 0-65535 */
+ memcpy( &d->vp, &vp, sizeof(vp) );
+ /* update cam->params.colourParams */
+ saa7114h_set_cparams(d);
+ up(&d->param_lock);
+ break;
+ }
+
+ /* get/set capture window */
+ case VIDIOCGWIN:
+ if (copy_to_user(arg, &d->vw, sizeof(struct video_window)))
+ retval = -EFAULT;
+ break;
+
+ case VIDIOCSWIN:
+ {
+ /* copy_from_user, check validity, copy to internal structure */
+ struct video_window vw;
+ if (copy_from_user(&vw, arg, sizeof(vw))) {
+ retval = -EFAULT;
+ break;
+ }
+
+ if (vw.clipcount != 0) { /* clipping not supported */
+ retval = -EINVAL;
+ break;
+ }
+ if (vw.clips != NULL) { /* clipping not supported */
+ retval = -EINVAL;
+ break;
+ }
+ if ((vw.width > MAX_HORIZ || vw.width < MIN_HORIZ) ||
+ (vw.height > MAX_VERT || vw.height < MIN_VERT)) {
+ retval = -EINVAL;
+ break;
+ }
+
+ /* we set the video window to something smaller or equal to what
+ * is requested by the user???
+ */
+ down(&d->param_lock);
+ if (vw.width != d->vw.width || vw.height != d->vw.height) {
+ uint32_t scale_factor;
+ /* XXXKW base percentage on input stream, not MAX? */
+
+ /* Assert scaler reset */
+ saa7114h_reg_write(d, 0x88, 0x98);
+
+ /* Vertical scaling */
+ scale_factor = (MAX_VERT*1024) / vw.height;
+ saa7114h_reg_write(d, 0x9e, vw.height & 0xff);
+ saa7114h_reg_write(d, 0x9f, (vw.height >> 8) & 0xf);
+ saa7114h_reg_write(d, 0xb0, scale_factor & 0xff);
+ saa7114h_reg_write(d, 0xb1, (scale_factor >> 8) & 0xff);
+ saa7114h_reg_write(d, 0xb2, scale_factor & 0xff);
+ saa7114h_reg_write(d, 0xb3, (scale_factor >> 8) & 0xff);
+ /* Horizontal scaling */
+ scale_factor = (MAX_HORIZ*1024) / vw.width;
+ saa7114h_reg_write(d, 0x9c, vw.width & 0xff);
+ saa7114h_reg_write(d, 0x9d, (vw.width >> 8) & 0xf);
+ saa7114h_reg_write(d, 0xa8, scale_factor & 0xff);
+ saa7114h_reg_write(d, 0xa9, (scale_factor >> 8) & 0xff);
+ saa7114h_reg_write(d, 0xac, (scale_factor >> 1) & 0xff);
+ saa7114h_reg_write(d, 0xad, (scale_factor >> 9) & 0xff);
+#if 0
+ /* prescaler
+ saa7114h_reg_write(d, 0xa0, 2);
+ saa7114h_reg_write(d, 0xa1, 1);
+ saa7114h_reg_write(d, 0xa2, 1);
+ */
+#endif
+
+ /* Release scaler reset */
+ saa7114h_reg_write(d, 0x88, 0xb8);
+ d->vw.width = vw.width;
+ d->vw.height = vw.height;
+ }
+ up(&d->param_lock);
+ break;
+ }
+
+ /* mmap interface */
+ case VIDIOCGMBUF:
+ {
+ struct video_mbuf vm;
+ int i;
+
+ memset(&vm, 0, sizeof(vm));
+ vm.size = MAX_FRAME_SIZE*NUM_FRAME;
+ vm.frames = NUM_FRAME;
+ for (i = 0; i < NUM_FRAME; i++)
+ vm.offsets[i] = MAX_FRAME_SIZE * i;
+
+ if (copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
+ retval = -EFAULT;
+
+ break;
+ }
+
+ case VIDIOCMCAPTURE:
+ {
+ struct video_mmap vm;
+ int descr, status;
+
+ if (copy_from_user((void *)&vm, (void *)arg, sizeof(vm))) {
+ retval = -EFAULT;
+ break;
+ }
+ if (vm.frame<0||vm.frame>NUM_FRAME) {
+ retval = -EINVAL;
+ break;
+ }
+
+ DBG(DBG_CALL,
+ printk(KERN_DEBUG IF_NAME ":ioctl MCAPTURE %d\n", vm.frame));
+
+ d->vp.palette = vm.format;
+ /* XXXKW set depth? */
+ /* XXXKW match/update for vm.width, vm.height */
+
+ /* XXKW Should check this periodically!? */
+ status = saa7114h_reg_read(d, DECODER_STATUS);
+// d->interlaced = ((status & 0x80) != 0);
+
+ /* Give the buffer to the DMA engine */
+ /* XXXKW vm.frame vs d->swframe!! mmap/read mismatch */
+#if DMA_DEINTERLACE
+ d->frame[vm.frame].pos = d->frame[vm.frame].data + d->vw.width*RAW_PER_PIXEL;
+#else
+ d->frame[vm.frame].pos = d->frame[vm.frame].data;
+#endif
+#if !NULL_DMA
+ d->frame[vm.frame].state = FRAME_READY;
+ /* Fire up the DMA engine again if it stopped */
+ if (!d->dma_enable) {
+ d->dma_enable = 1;
+ d->hwframe = d->swframe = vm.frame;
+ descr = in64(MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ DBG(DBG_DESCR,
+ printk(KERN_DEBUG IF_NAME ": capture adds %d -> %d descrs\n",
+ d->ff.ringsz-descr, descr));
+ out64(d->ff.ringsz-descr, MAC2_DMARX0_CSR(R_MAC_DMA_DSCR_CNT));
+ }
+#endif
+ break;
+ }
+
+ case VIDIOCSYNC:
+ {
+ int frame;
+
+ if (copy_from_user((void *)&frame, arg, sizeof(int))) {
+ retval = -EFAULT;
+ break;
+ }
+
+ if (frame<0 || frame >= NUM_FRAME) {
+ retval = -EINVAL;
+ break;
+ }
+
+ DBG(DBG_CALL, printk(KERN_DEBUG IF_NAME ":ioctl CSYNC %d\n", frame));
+
+ switch (d->frame[frame].state) {
+ case FRAME_UNUSED:
+ DBG(DBG_IO,
+ printk(KERN_ERR IF_NAME ":sync to unused frame %d\n", frame));
+ retval = -EINVAL;
+ break;
+
+ case FRAME_READY:
+ case FRAME_GRABBING:
+ DBG(DBG_IO,
+ printk(KERN_DEBUG IF_NAME ": sleeping for frame %d\n", frame));
+ interruptible_sleep_on(&d->frame[frame].read_wait);
+ DBG(DBG_IO,
+ printk(KERN_DEBUG IF_NAME ": awakened\n"));
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ case FRAME_DONE:
+#if !NULL_DMA
+ yuvconvert_inplace(d->frame[frame].data,
+ d->frame[frame].size,
+ d->vp.palette, 1);
+ d->frame[frame].state = FRAME_UNUSED;
+#endif
+ DBG(DBG_IO,
+ printk(KERN_DEBUG IF_NAME ": sync finished %d\n",
+ frame));
+ break;
+ }
+ break;
+ }
+
+ case VIDIOREADREG:
+ reg = *(int *)arg;
+ DBG(DBG_REGISTER, printk(KERN_DEBUG IF_NAME ": read of %02x\n", reg));
+ if ((reg > 0xEF) || (reg < 0))
+ return -EINVAL;
+ val = saa7114h_reg_read((struct saa7114h *)vd->priv, reg);
+ if (val == -1)
+ return -EIO;
+ *(int *)arg = val;
+ break;
+ case VIDIOWRITEREG:
+ if (copy_from_user(®, arg, sizeof(int)) ||
+ copy_from_user(&val, arg+sizeof(int), sizeof(int)))
+ return -EFAULT;
+ DBG(DBG_REGISTER, printk(KERN_DEBUG IF_NAME ": write of %02x <- %02x\n", reg, val));
+ if ((reg > 0xEF) || (reg < 0))
+ return -EINVAL;
+ val = saa7114h_reg_write((struct saa7114h *)vd->priv, reg, val);
+ if (val == -1)
+ return -EIO;
+ break;
+ case VIDIOGRABFRAME:
+ return grab_frame((struct saa7114h *)vd->priv, arg, 0);
+ case VIDIOSHOWEAV:
+ return grab_frame((struct saa7114h *)vd->priv, arg, 1);
+ default:
+ retval = -EINVAL;
+ break;
+ }
+
+ return retval;
+}
+
+static int saa7114h_mmap(struct video_device *vd, const char *adr,
+ unsigned long size)
+{
+ struct saa7114h *d = vd->priv;
+ unsigned long start = (unsigned long)adr;
+ unsigned long page, pos;
+
+ if (!d)
+ return -ENODEV;
+
+ if (size > MAX_MMAP_SIZE) {
+ printk("mmap: bad size %lu > %lu\n", size, MAX_MMAP_SIZE);
+ return -EINVAL;
+ }
+
+ /* make this _really_ smp-safe */
+ if (down_interruptible(&d->busy_lock))
+ return -EINTR;
+
+ pos = (unsigned long)(d->frame_buf);
+ while (size > 0) {
+ page = kvirt_to_pa(pos);
+ if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED)) {
+ up(&d->busy_lock);
+ return -EAGAIN;
+ }
+ start += PAGE_SIZE;
+ pos += PAGE_SIZE;
+ if (size > PAGE_SIZE)
+ size -= PAGE_SIZE;
+ else
+ size = 0;
+ }
+ up(&d->busy_lock);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------
+ * Device probing and initialization
+ * ----------------------------------------------------------------------- */
+
+/* Default values to program into SAA7114H */
+static const unsigned char reg_init[] = {
+ 0x00, 0x00, /* 00 - ID byte */
+
+ /*front end */
+ 0x01, 0x08, /* 01 - Horizontal increment -> recommended delay */
+ 0x02, 0xC4, /* 02 - AI Control 1 (CVBS AI23) */
+ 0x03, 0x10, /* 03 - AI Control 2 */
+ 0x04, 0x90, /* 04 - AI Control 3 (Gain ch 1) */
+ 0x05, 0x90, /* 05 - AI Control 4 (Gain ch 2) */
+
+ /* decoder */
+ 0x06, 0xEB, /* 06 - Horiz sync start */
+ 0x07, 0xE0, /* 07 - Horiz sync stop */
+ 0x08, 0x98, /* 08 - Sync control */
+ 0x09, 0x40, /* 09 - L Control */
+ 0x0a, 0x80, /* 0a - L Brightness */
+ 0x0b, 0x44, /* 0b - L Contrast */
+ 0x0c, 0x40, /* 0c - C Saturation */
+ 0x0d, 0x00, /* 0d - C Hue */
+ 0x0e, 0x89, /* 0e - C Control 1 */
+ 0x0f, 0x0f, /* 0f - C Gain (??? 0x2A recommended) */
+ 0x10, 0x0E, /* 10 - C Control 2 */
+ 0x11, 0x00, /* 11 - Mode/Delay */
+ 0x12, 0x00, /* 12 - RT signal control */
+ 0x13, 0x00, /* 13 - RT/X output */
+ 0x14, 0x00, /* 14 - Analog, Compat */
+ 0x15, 0x11, /* 15 - VGATE start */
+ 0x16, 0xFE, /* 16 - VGATE stop */
+ 0x17, 0x40, /* 17 - Misc VGATE (disable LLC2) */
+ 0x18, 0x40, /* 18 - Raw data gain - 128 */
+ 0x19, 0x80, /* 19 - Raw data offset - 0 */
+
+ /* Global settings */
+ 0x88, 0x98, /* 88 - AI1x on, AI2x off; decoder/slicer off; ACLK gen off */
+ 0x83, 0x00, /* 83 - X-port output disabled */
+ 0x84, 0xF0, /* 84 - I-port V/G output framing, IGP1=0=IGP0=0 */
+ 0x85, 0x00, /* 85 - I-port default polarities, X-port signals */
+ 0x86, 0x40, /* 86 - more IGP1/0, FIFO level, only video transmitted */
+ 0x87, 0x01, /* 87 - ICK default, IDQ default, I-port output enabled */
+
+ /* Task A: scaler input config and output format */
+ 0x90, 0x00, /* 90 - Task handling */
+ 0x91, 0x08, /* 91 - Scalar input and format */
+ 0x92, 0x10, /* 92 - Reference signal def */
+ 0x93, 0x80, /* 93 - I-port output */
+
+ /* Task B */
+ 0xc0, 0x42, /* 90 - Task handling */
+ 0xc1, 0x08, /* 91 - Scalar input and format */
+ 0xc2, 0x10, /* 92 - Reference signal def */
+ 0xc3, 0x80, /* 93 - I-port output */
+
+ /* Input and Output windows */
+ 0x94, 0x10, /* - */
+ 0x95, 0x00, /* - */
+ 0x96, 0xD0, /* - */
+ 0x97, 0x02, /* - */
+ 0x98, 0x0A, /* - */
+ 0x99, 0x00, /* - */
+ 0x9a, 0xF2, /* - */
+ 0x9b, 0x00, /* - */
+ 0x9c, 0xD0, /* - */
+ 0x9d, 0x02, /* - */
+ 0xc4, 0x10, /* - */
+ 0xc5, 0x00, /* - */
+ 0xc6, 0xD0, /* - */
+ 0xc7, 0x02, /* - */
+ 0xc8, 0x0A, /* - */
+ 0xc9, 0x00, /* - */
+ 0xca, 0xF2, /* - */
+ 0xcb, 0x00, /* - */
+ 0xcc, 0xD0, /* - */
+ 0xcd, 0x02, /* - */
+
+ 0x9e, 0xf0, /* - */
+ 0x9f, 0x00, /* - */
+ 0xce, 0xf0, /* - */
+ 0xcf, 0x00, /* - */
+
+ /* Prefiltering and prescaling */
+ 0xa0, 0x01, /* - */
+ 0xa1, 0x00, /* - */
+ 0xa2, 0x00, /* - */
+ 0xa4, 0x80, /* - */
+ 0xa5, 0x40, /* - */
+ 0xa6, 0x40, /* - */
+ 0xd4, 0x80, /* - */
+ 0xd5, 0x40, /* - */
+ 0xd6, 0x40, /* - */
+
+ /* Horizontal phase scaling */
+ 0xa8, 0x00, /* - */
+ 0xa9, 0x04, /* - */
+ 0xaa, 0x00, /* - */
+ 0xd8, 0x00, /* - */
+ 0xd9, 0x04, /* - */
+ 0xda, 0x00, /* - */
+
+ 0xac, 0x00, /* - */
+ 0xad, 0x02, /* - */
+ 0xae, 0x00, /* - */
+ 0xdc, 0x00, /* - */
+ 0xdd, 0x02, /* - */
+ 0xde, 0x00, /* - */
+
+ /* Vertical phase scaling */
+ 0xb0, 0x00, /* - */
+ 0xb1, 0x04, /* - */
+ 0xb2, 0x00, /* - */
+ 0xb3, 0x04, /* - */
+ 0xe0, 0x00, /* - */
+ 0xe1, 0x04, /* - */
+ 0xe2, 0x00, /* - */
+ 0xe3, 0x04, /* - */
+ 0xb4, 0x00, /* b4 - vscale mode control */
+ 0xe4, 0x00, /* b4 - vscale mode control */
+
+ /* Task enables */
+ 0x80, 0x10, /* 80 - LLC->ICLK, dq->IDQ, scaler->F/V timing, task enables */
+
+ /* Reset the slicer */
+ 0x88, 0xb8, /* 88 - AI1x on, AI2x off; decoder/slicer on; ACLK gen off */
+};
+
+static int saa7114h_attach(struct i2c_adapter *adap, int addr, unsigned short flags, int kind)
+{
+ struct i2c_client *client;
+ struct video_device *vd;
+ struct saa7114h *decoder;
+ int err;
+ int val, i;
+
+ client = kmalloc(sizeof(*client), GFP_KERNEL);
+ if (client == NULL)
+ return -ENOMEM;
+ client->adapter = adap;
+ client->addr = addr;
+ client->driver = &i2c_driver_saa7114h;
+ strcpy(client->name, IF_NAME);
+
+ decoder = kmalloc(sizeof(*decoder), GFP_KERNEL);
+ if (decoder == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+ memset(decoder, 0, sizeof(struct saa7114h));
+ decoder->client = client;
+ decoder->dma_enable = 0;
+ decoder->palette = VIDEO_PALETTE_UYVY;
+ decoder->depth = 16;
+ decoder->vw.width = MAX_HORIZ;
+ decoder->vw.height = MAX_VERT;
+ decoder->frame_buf = rvmalloc(MAX_FRAME_SIZE*NUM_FRAME);
+ if (!decoder->frame_buf) {
+ kfree(decoder);
+ kfree(client);
+ return -ENOMEM;
+ }
+ /* XXXKW use clear_page? */
+ memset(decoder->frame_buf, 0, MAX_FRAME_SIZE*NUM_FRAME);
+ printk("saa7114h_attach: frame_buf = (fb=%8p / %08lx)\n",
+ decoder->frame_buf, kvirt_to_pa((int)decoder->frame_buf));
+ for (i=0; i<NUM_FRAME; i++) {
+ decoder->frame[i].data = decoder->frame_buf+i*MAX_FRAME_SIZE;
+#if NULL_DMA
+ decoder->frame[i].state = FRAME_DONE;
+#else
+ decoder->frame[i].state = FRAME_UNUSED;
+#endif
+ init_waitqueue_head(&decoder->frame[i].read_wait);
+ }
+ decoder->irq = K_INT_MAC_2;
+ if (request_irq
+ (decoder->irq, saa7114h_interrupt, 0, "Philips SAA7114h", decoder)) {
+ rvfree(decoder->frame_buf, MAX_FRAME_SIZE*NUM_FRAME);
+ kfree(decoder);
+ kfree(client);
+ return -ENOMEM;
+ }
+ init_MUTEX(&decoder->param_lock);
+ init_MUTEX(&decoder->busy_lock);
+
+ if ((err = i2c_attach_client(client)) < 0) {
+ kfree(client);
+ kfree(decoder);
+ return err;
+ }
+
+ if (saa7114h_reg_init(decoder, reg_init, sizeof(reg_init)) ||
+ saa7114h_get_cparams(decoder)) {
+ i2c_detach_client(client);
+ kfree(client);
+ kfree(decoder);
+ return -ENODEV;
+ }
+
+ vd = kmalloc(sizeof(*vd), GFP_KERNEL);
+ memset(vd, 0, sizeof(*vd));
+ if (vd == NULL) {
+ i2c_detach_client(client);
+ kfree(client);
+ kfree(decoder);
+ return -ENOMEM;
+ }
+ vd->priv = decoder;
+ strcpy(vd->name, IF_NAME);
+ vd->type = VID_TYPE_CAPTURE;
+ vd->hardware = VID_HARDWARE_SAA7114H;
+ vd->open = saa7114h_open;
+ vd->close = saa7114h_release;
+ vd->read = saa7114h_read;
+ vd->ioctl = saa7114h_ioctl;
+ vd->mmap = saa7114h_mmap;
+
+ if ((err = video_register_device(vd, VFL_TYPE_GRABBER, -1)) < 0) {
+ i2c_detach_client(client);
+ kfree(client);
+ kfree(decoder);
+ kfree(vd);
+ return err;
+ }
+
+ client->data = vd;
+ decoder->vd = vd;
+
+ /* Turn on the ITRDY - preserve the GENO pin for syncser */
+ val = in64(KSEG1 + A_MAC_REGISTER(2, R_MAC_MDIO));
+ out64(M_MAC_MDIO_OUT | (val & M_MAC_GENC),
+ KSEG1 + A_MAC_REGISTER(2, R_MAC_MDIO));
+
+ if ((err = dma_setup(decoder))) {
+ i2c_detach_client(client);
+ kfree(client);
+ kfree(decoder);
+ kfree(vd);
+ return err;
+ }
+
+ printk("saa7114h_attach successful\n");
+
+#ifdef CONFIG_PROC_FS
+ proc_saa7114h_create();
+ create_proc_decoder(vd->priv);
+#endif
+
+ MOD_INC_USE_COUNT;
+
+ return 0;
+}
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = {I2C_CLIENT_END};
+static unsigned short normal_i2c_range[] = {0x20, 0x21, I2C_CLIENT_END};
+static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+static unsigned short force[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
+
+static struct i2c_client_address_data addr_data = {
+ normal_i2c, normal_i2c_range,
+ probe, probe_range,
+ ignore, ignore_range,
+ force
+};
+
+static int saa7114h_probe(struct i2c_adapter *adap)
+{
+ /* Look for this device on the given adapter (bus) */
+ if (adap->id == (I2C_ALGO_SIBYTE | I2C_HW_SIBYTE))
+ return i2c_probe(adap, &addr_data, &saa7114h_attach);
+ else
+ return 0;
+}
+
+static int saa7114h_detach(struct i2c_client *device)
+{
+#if 0
+ kfree(device->data);
+ MOD_DEC_USE_COUNT;
+#endif
+#ifdef CONFIG_PROC_FS
+ destroy_proc_decoder(((struct video_device *)device->data)->priv);
+ proc_saa7114h_destroy();
+#endif
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int __init swarm_7114h_init(void)
+{
+ return i2c_add_driver(&i2c_driver_saa7114h);
+}
+
+static void __exit swarm_7114h_cleanup(void)
+{
+}
+
+MODULE_AUTHOR("Kip Walker, Broadcom Corp.");
+MODULE_DESCRIPTION("Philips SAA7114H Driver for Broadcom SWARM board");
+
+module_init(swarm_7114h_init);
+module_exit(swarm_7114h_cleanup);
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