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-rw-r--r--drivers/media/video/arv.c916
1 files changed, 916 insertions, 0 deletions
diff --git a/drivers/media/video/arv.c b/drivers/media/video/arv.c
new file mode 100644
index 000000000000..87fd3a7bb392
--- /dev/null
+++ b/drivers/media/video/arv.c
@@ -0,0 +1,916 @@
+/*
+ * Colour AR M64278(VGA) driver for Video4Linux
+ *
+ * Copyright (C) 2003 Takeo Takahashi <takahashi.takeo@renesas.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.
+ *
+ * Some code is taken from AR driver sample program for M3T-M32700UT.
+ *
+ * AR driver sample (M32R SDK):
+ * Copyright (c) 2003 RENESAS TECHNOROGY CORPORATION
+ * AND RENESAS SOLUTIONS CORPORATION
+ * All Rights Reserved.
+ *
+ * 2003-09-01: Support w3cam by Takeo Takahashi
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/videodev.h>
+
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+#include <asm/m32r.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/byteorder.h>
+
+#if 0
+#define DEBUG(n, args...) printk(args)
+#define CHECK_LOST 1
+#else
+#define DEBUG(n, args...)
+#define CHECK_LOST 0
+#endif
+
+/*
+ * USE_INT is always 0, interrupt mode is not available
+ * on linux due to lack of speed
+ */
+#define USE_INT 0 /* Don't modify */
+
+#define VERSION "0.03"
+
+#define ar_inl(addr) inl((unsigned long)(addr))
+#define ar_outl(val, addr) outl((unsigned long)(val),(unsigned long)(addr))
+
+extern struct cpuinfo_m32r boot_cpu_data;
+
+/*
+ * CCD pixel size
+ * Note that M32700UT does not support CIF mode, but QVGA is
+ * supported by M32700UT hardware using VGA mode of AR LSI.
+ *
+ * Supported: VGA (Normal mode, Interlace mode)
+ * QVGA (Always Interlace mode of VGA)
+ *
+ */
+#define AR_WIDTH_VGA 640
+#define AR_HEIGHT_VGA 480
+#define AR_WIDTH_QVGA 320
+#define AR_HEIGHT_QVGA 240
+#define MIN_AR_WIDTH AR_WIDTH_QVGA
+#define MIN_AR_HEIGHT AR_HEIGHT_QVGA
+#define MAX_AR_WIDTH AR_WIDTH_VGA
+#define MAX_AR_HEIGHT AR_HEIGHT_VGA
+
+/* bits & bytes per pixel */
+#define AR_BITS_PER_PIXEL 16
+#define AR_BYTES_PER_PIXEL (AR_BITS_PER_PIXEL/8)
+
+/* line buffer size */
+#define AR_LINE_BYTES_VGA (AR_WIDTH_VGA * AR_BYTES_PER_PIXEL)
+#define AR_LINE_BYTES_QVGA (AR_WIDTH_QVGA * AR_BYTES_PER_PIXEL)
+#define MAX_AR_LINE_BYTES AR_LINE_BYTES_VGA
+
+/* frame size & type */
+#define AR_FRAME_BYTES_VGA \
+ (AR_WIDTH_VGA * AR_HEIGHT_VGA * AR_BYTES_PER_PIXEL)
+#define AR_FRAME_BYTES_QVGA \
+ (AR_WIDTH_QVGA * AR_HEIGHT_QVGA * AR_BYTES_PER_PIXEL)
+#define MAX_AR_FRAME_BYTES \
+ (MAX_AR_WIDTH * MAX_AR_HEIGHT * AR_BYTES_PER_PIXEL)
+
+#define AR_MAX_FRAME 15
+
+/* capture size */
+#define AR_SIZE_VGA 0
+#define AR_SIZE_QVGA 1
+
+/* capture mode */
+#define AR_MODE_INTERLACE 0
+#define AR_MODE_NORMAL 1
+
+struct ar_device {
+ struct video_device *vdev;
+ unsigned int start_capture; /* duaring capture in INT. mode. */
+#if USE_INT
+ unsigned char *line_buff; /* DMA line buffer */
+#endif
+ unsigned char *frame[MAX_AR_HEIGHT]; /* frame data */
+ short size; /* capture size */
+ short mode; /* capture mode */
+ int width, height;
+ int frame_bytes, line_bytes;
+ wait_queue_head_t wait;
+ struct semaphore lock;
+};
+
+static int video_nr = -1; /* video device number (first free) */
+static unsigned char yuv[MAX_AR_FRAME_BYTES];
+
+/* module parameters */
+/* default frequency */
+#define DEFAULT_FREQ 50 /* 50 or 75 (MHz) is available as BCLK */
+static int freq = DEFAULT_FREQ; /* BCLK: available 50 or 70 (MHz) */
+static int vga = 0; /* default mode(0:QVGA mode, other:VGA mode) */
+static int vga_interlace = 0; /* 0 is normal mode for, else interlace mode */
+MODULE_PARM(freq, "i");
+MODULE_PARM(vga, "i");
+MODULE_PARM(vga_interlace, "i");
+
+static int ar_initialize(struct video_device *dev);
+
+static inline void wait_for_vsync(void)
+{
+ while (ar_inl(ARVCR0) & ARVCR0_VDS) /* wait for VSYNC */
+ cpu_relax();
+ while (!(ar_inl(ARVCR0) & ARVCR0_VDS)) /* wait for VSYNC */
+ cpu_relax();
+}
+
+static inline void wait_acknowledge(void)
+{
+ int i;
+
+ for (i = 0; i < 1000; i++)
+ cpu_relax();
+ while (ar_inl(PLDI2CSTS) & PLDI2CSTS_NOACK)
+ cpu_relax();
+}
+
+/*******************************************************************
+ * I2C functions
+ *******************************************************************/
+void iic(int n, unsigned long addr, unsigned long data1, unsigned long data2,
+ unsigned long data3)
+{
+ int i;
+
+ /* Slave Address */
+ ar_outl(addr, PLDI2CDATA);
+ wait_for_vsync();
+
+ /* Start */
+ ar_outl(1, PLDI2CCND);
+ wait_acknowledge();
+
+ /* Transfer data 1 */
+ ar_outl(data1, PLDI2CDATA);
+ wait_for_vsync();
+ ar_outl(PLDI2CSTEN_STEN, PLDI2CSTEN);
+ wait_acknowledge();
+
+ /* Transfer data 2 */
+ ar_outl(data2, PLDI2CDATA);
+ wait_for_vsync();
+ ar_outl(PLDI2CSTEN_STEN, PLDI2CSTEN);
+ wait_acknowledge();
+
+ if (n == 3) {
+ /* Transfer data 3 */
+ ar_outl(data3, PLDI2CDATA);
+ wait_for_vsync();
+ ar_outl(PLDI2CSTEN_STEN, PLDI2CSTEN);
+ wait_acknowledge();
+ }
+
+ /* Stop */
+ for (i = 0; i < 100; i++)
+ cpu_relax();
+ ar_outl(2, PLDI2CCND);
+ ar_outl(2, PLDI2CCND);
+
+ while (ar_inl(PLDI2CSTS) & PLDI2CSTS_BB)
+ cpu_relax();
+}
+
+
+void init_iic(void)
+{
+ DEBUG(1, "init_iic:\n");
+
+ /*
+ * ICU Setting (iic)
+ */
+ /* I2C Setting */
+ ar_outl(0x0, PLDI2CCR); /* I2CCR Disable */
+ ar_outl(0x0300, PLDI2CMOD); /* I2CMOD ACK/8b-data/7b-addr/auto */
+ ar_outl(0x1, PLDI2CACK); /* I2CACK ACK */
+
+ /* I2C CLK */
+ /* 50MH-100k */
+ if (freq == 75) {
+ ar_outl(369, PLDI2CFREQ); /* BCLK = 75MHz */
+ } else if (freq == 50) {
+ ar_outl(244, PLDI2CFREQ); /* BCLK = 50MHz */
+ } else {
+ ar_outl(244, PLDI2CFREQ); /* default: BCLK = 50MHz */
+ }
+ ar_outl(0x1, PLDI2CCR); /* I2CCR Enable */
+}
+
+/**************************************************************************
+ *
+ * Video4Linux Interface functions
+ *
+ **************************************************************************/
+
+static inline void disable_dma(void)
+{
+ ar_outl(0x8000, M32R_DMAEN_PORTL); /* disable DMA0 */
+}
+
+static inline void enable_dma(void)
+{
+ ar_outl(0x8080, M32R_DMAEN_PORTL); /* enable DMA0 */
+}
+
+static inline void clear_dma_status(void)
+{
+ ar_outl(0x8000, M32R_DMAEDET_PORTL); /* clear status */
+}
+
+static inline void wait_for_vertical_sync(int exp_line)
+{
+#if CHECK_LOST
+ int tmout = 10000; /* FIXME */
+ int l;
+
+ /*
+ * check HCOUNT because we cannot check vertical sync.
+ */
+ for (; tmout >= 0; tmout--) {
+ l = ar_inl(ARVHCOUNT);
+ if (l == exp_line)
+ break;
+ }
+ if (tmout < 0)
+ printk("arv: lost %d -> %d\n", exp_line, l);
+#else
+ while (ar_inl(ARVHCOUNT) != exp_line)
+ cpu_relax();
+#endif
+}
+
+static ssize_t ar_read(struct file *file, char *buf, size_t count, loff_t *ppos)
+{
+ struct video_device *v = video_devdata(file);
+ struct ar_device *ar = v->priv;
+ long ret = ar->frame_bytes; /* return read bytes */
+ unsigned long arvcr1 = 0;
+ unsigned long flags;
+ unsigned char *p;
+ int h, w;
+ unsigned char *py, *pu, *pv;
+#if ! USE_INT
+ int l;
+#endif
+
+ DEBUG(1, "ar_read()\n");
+
+ if (ar->size == AR_SIZE_QVGA)
+ arvcr1 |= ARVCR1_QVGA;
+ if (ar->mode == AR_MODE_NORMAL)
+ arvcr1 |= ARVCR1_NORMAL;
+
+ down(&ar->lock);
+
+#if USE_INT
+ local_irq_save(flags);
+ disable_dma();
+ ar_outl(0xa1871300, M32R_DMA0CR0_PORTL);
+ ar_outl(0x01000000, M32R_DMA0CR1_PORTL);
+
+ /* set AR FIFO address as source(BSEL5) */
+ ar_outl(ARDATA32, M32R_DMA0CSA_PORTL);
+ ar_outl(ARDATA32, M32R_DMA0RSA_PORTL);
+ ar_outl(ar->line_buff, M32R_DMA0CDA_PORTL); /* destination addr. */
+ ar_outl(ar->line_buff, M32R_DMA0RDA_PORTL); /* reload address */
+ ar_outl(ar->line_bytes, M32R_DMA0CBCUT_PORTL); /* byte count (bytes) */
+ ar_outl(ar->line_bytes, M32R_DMA0RBCUT_PORTL); /* reload count (bytes) */
+
+ /*
+ * Okey , kicks AR LSI to invoke an interrupt
+ */
+ ar->start_capture = 0;
+ ar_outl(arvcr1 | ARVCR1_HIEN, ARVCR1);
+ local_irq_restore(flags);
+ /* .... AR interrupts .... */
+ interruptible_sleep_on(&ar->wait);
+ if (signal_pending(current)) {
+ printk("arv: interrupted while get frame data.\n");
+ ret = -EINTR;
+ goto out_up;
+ }
+#else /* ! USE_INT */
+ /* polling */
+ ar_outl(arvcr1, ARVCR1);
+ disable_dma();
+ ar_outl(0x8000, M32R_DMAEDET_PORTL);
+ ar_outl(0xa0861300, M32R_DMA0CR0_PORTL);
+ ar_outl(0x01000000, M32R_DMA0CR1_PORTL);
+ ar_outl(ARDATA32, M32R_DMA0CSA_PORTL);
+ ar_outl(ARDATA32, M32R_DMA0RSA_PORTL);
+ ar_outl(ar->line_bytes, M32R_DMA0CBCUT_PORTL);
+ ar_outl(ar->line_bytes, M32R_DMA0RBCUT_PORTL);
+
+ local_irq_save(flags);
+ while (ar_inl(ARVHCOUNT) != 0) /* wait for 0 */
+ cpu_relax();
+ if (ar->mode == AR_MODE_INTERLACE && ar->size == AR_SIZE_VGA) {
+ for (h = 0; h < ar->height; h++) {
+ wait_for_vertical_sync(h);
+ if (h < (AR_HEIGHT_VGA/2))
+ l = h << 1;
+ else
+ l = (((h - (AR_HEIGHT_VGA/2)) << 1) + 1);
+ ar_outl(virt_to_phys(ar->frame[l]), M32R_DMA0CDA_PORTL);
+ enable_dma();
+ while (!(ar_inl(M32R_DMAEDET_PORTL) & 0x8000))
+ cpu_relax();
+ disable_dma();
+ clear_dma_status();
+ ar_outl(0xa0861300, M32R_DMA0CR0_PORTL);
+ }
+ } else {
+ for (h = 0; h < ar->height; h++) {
+ wait_for_vertical_sync(h);
+ ar_outl(virt_to_phys(ar->frame[h]), M32R_DMA0CDA_PORTL);
+ enable_dma();
+ while (!(ar_inl(M32R_DMAEDET_PORTL) & 0x8000))
+ cpu_relax();
+ disable_dma();
+ clear_dma_status();
+ ar_outl(0xa0861300, M32R_DMA0CR0_PORTL);
+ }
+ }
+ local_irq_restore(flags);
+#endif /* ! USE_INT */
+
+ /*
+ * convert YUV422 to YUV422P
+ * +--------------------+
+ * | Y0,Y1,... |
+ * | ..............Yn |
+ * +--------------------+
+ * | U0,U1,........Un |
+ * +--------------------+
+ * | V0,V1,........Vn |
+ * +--------------------+
+ */
+ py = yuv;
+ pu = py + (ar->frame_bytes / 2);
+ pv = pu + (ar->frame_bytes / 4);
+ for (h = 0; h < ar->height; h++) {
+ p = ar->frame[h];
+ for (w = 0; w < ar->line_bytes; w += 4) {
+ *py++ = *p++;
+ *pu++ = *p++;
+ *py++ = *p++;
+ *pv++ = *p++;
+ }
+ }
+ if (copy_to_user(buf, yuv, ar->frame_bytes)) {
+ printk("arv: failed while copy_to_user yuv.\n");
+ ret = -EFAULT;
+ goto out_up;
+ }
+ DEBUG(1, "ret = %d\n", ret);
+out_up:
+ up(&ar->lock);
+ return ret;
+}
+
+static int ar_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ struct video_device *dev = video_devdata(file);
+ struct ar_device *ar = dev->priv;
+
+ DEBUG(1, "ar_ioctl()\n");
+ switch(cmd) {
+ case VIDIOCGCAP:
+ {
+ struct video_capability *b = arg;
+ DEBUG(1, "VIDIOCGCAP:\n");
+ strcpy(b->name, ar->vdev->name);
+ b->type = VID_TYPE_CAPTURE;
+ b->channels = 0;
+ b->audios = 0;
+ b->maxwidth = MAX_AR_WIDTH;
+ b->maxheight = MAX_AR_HEIGHT;
+ b->minwidth = MIN_AR_WIDTH;
+ b->minheight = MIN_AR_HEIGHT;
+ return 0;
+ }
+ case VIDIOCGCHAN:
+ DEBUG(1, "VIDIOCGCHAN:\n");
+ return 0;
+ case VIDIOCSCHAN:
+ DEBUG(1, "VIDIOCSCHAN:\n");
+ return 0;
+ case VIDIOCGTUNER:
+ DEBUG(1, "VIDIOCGTUNER:\n");
+ return 0;
+ case VIDIOCSTUNER:
+ DEBUG(1, "VIDIOCSTUNER:\n");
+ return 0;
+ case VIDIOCGPICT:
+ DEBUG(1, "VIDIOCGPICT:\n");
+ return 0;
+ case VIDIOCSPICT:
+ DEBUG(1, "VIDIOCSPICT:\n");
+ return 0;
+ case VIDIOCCAPTURE:
+ DEBUG(1, "VIDIOCCAPTURE:\n");
+ return -EINVAL;
+ case VIDIOCGWIN:
+ {
+ struct video_window *w = arg;
+ DEBUG(1, "VIDIOCGWIN:\n");
+ memset(w, 0, sizeof(w));
+ w->width = ar->width;
+ w->height = ar->height;
+ return 0;
+ }
+ case VIDIOCSWIN:
+ {
+ struct video_window *w = arg;
+ DEBUG(1, "VIDIOCSWIN:\n");
+ if ((w->width != AR_WIDTH_VGA || w->height != AR_HEIGHT_VGA) &&
+ (w->width != AR_WIDTH_QVGA || w->height != AR_HEIGHT_QVGA))
+ return -EINVAL;
+
+ down(&ar->lock);
+ ar->width = w->width;
+ ar->height = w->height;
+ if (ar->width == AR_WIDTH_VGA) {
+ ar->size = AR_SIZE_VGA;
+ ar->frame_bytes = AR_FRAME_BYTES_VGA;
+ ar->line_bytes = AR_LINE_BYTES_VGA;
+ if (vga_interlace)
+ ar->mode = AR_MODE_INTERLACE;
+ else
+ ar->mode = AR_MODE_NORMAL;
+ } else {
+ ar->size = AR_SIZE_QVGA;
+ ar->frame_bytes = AR_FRAME_BYTES_QVGA;
+ ar->line_bytes = AR_LINE_BYTES_QVGA;
+ ar->mode = AR_MODE_INTERLACE;
+ }
+ up(&ar->lock);
+ return 0;
+ }
+ case VIDIOCGFBUF:
+ DEBUG(1, "VIDIOCGFBUF:\n");
+ return -EINVAL;
+ case VIDIOCSFBUF:
+ DEBUG(1, "VIDIOCSFBUF:\n");
+ return -EINVAL;
+ case VIDIOCKEY:
+ DEBUG(1, "VIDIOCKEY:\n");
+ return 0;
+ case VIDIOCGFREQ:
+ DEBUG(1, "VIDIOCGFREQ:\n");
+ return -EINVAL;
+ case VIDIOCSFREQ:
+ DEBUG(1, "VIDIOCSFREQ:\n");
+ return -EINVAL;
+ case VIDIOCGAUDIO:
+ DEBUG(1, "VIDIOCGAUDIO:\n");
+ return -EINVAL;
+ case VIDIOCSAUDIO:
+ DEBUG(1, "VIDIOCSAUDIO:\n");
+ return -EINVAL;
+ case VIDIOCSYNC:
+ DEBUG(1, "VIDIOCSYNC:\n");
+ return -EINVAL;
+ case VIDIOCMCAPTURE:
+ DEBUG(1, "VIDIOCMCAPTURE:\n");
+ return -EINVAL;
+ case VIDIOCGMBUF:
+ DEBUG(1, "VIDIOCGMBUF:\n");
+ return -EINVAL;
+ case VIDIOCGUNIT:
+ DEBUG(1, "VIDIOCGUNIT:\n");
+ return -EINVAL;
+ case VIDIOCGCAPTURE:
+ DEBUG(1, "VIDIOCGCAPTURE:\n");
+ return -EINVAL;
+ case VIDIOCSCAPTURE:
+ DEBUG(1, "VIDIOCSCAPTURE:\n");
+ return -EINVAL;
+ case VIDIOCSPLAYMODE:
+ DEBUG(1, "VIDIOCSPLAYMODE:\n");
+ return -EINVAL;
+ case VIDIOCSWRITEMODE:
+ DEBUG(1, "VIDIOCSWRITEMODE:\n");
+ return -EINVAL;
+ case VIDIOCGPLAYINFO:
+ DEBUG(1, "VIDIOCGPLAYINFO:\n");
+ return -EINVAL;
+ case VIDIOCSMICROCODE:
+ DEBUG(1, "VIDIOCSMICROCODE:\n");
+ return -EINVAL;
+ case VIDIOCGVBIFMT:
+ DEBUG(1, "VIDIOCGVBIFMT:\n");
+ return -EINVAL;
+ case VIDIOCSVBIFMT:
+ DEBUG(1, "VIDIOCSVBIFMT:\n");
+ return -EINVAL;
+ default:
+ DEBUG(1, "Unknown ioctl(0x%08x)\n", cmd);
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static int ar_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ return video_usercopy(inode, file, cmd, arg, ar_do_ioctl);
+}
+
+#if USE_INT
+/*
+ * Interrupt handler
+ */
+static void ar_interrupt(int irq, void *dev, struct pt_regs *regs)
+{
+ struct ar_device *ar = dev;
+ unsigned int line_count;
+ unsigned int line_number;
+ unsigned int arvcr1;
+
+ line_count = ar_inl(ARVHCOUNT); /* line number */
+ if (ar->mode == AR_MODE_INTERLACE && ar->size == AR_SIZE_VGA) {
+ /* operations for interlace mode */
+ if ( line_count < (AR_HEIGHT_VGA/2) ) /* even line */
+ line_number = (line_count << 1);
+ else /* odd line */
+ line_number =
+ (((line_count - (AR_HEIGHT_VGA/2)) << 1) + 1);
+ } else {
+ line_number = line_count;
+ }
+
+ if (line_number == 0) {
+ /*
+ * It is an interrupt for line 0.
+ * we have to start capture.
+ */
+ disable_dma();
+#if 0
+ ar_outl(ar->line_buff, M32R_DMA0CDA_PORTL); /* needless? */
+#endif
+ memcpy(ar->frame[0], ar->line_buff, ar->line_bytes);
+#if 0
+ ar_outl(0xa1861300, M32R_DMA0CR0_PORTL);
+#endif
+ enable_dma();
+ ar->start_capture = 1; /* during capture */
+ return;
+ }
+
+ if (ar->start_capture == 1 && line_number <= (ar->height - 1)) {
+ disable_dma();
+ memcpy(ar->frame[line_number], ar->line_buff, ar->line_bytes);
+
+ /*
+ * if captured all line of a frame, disable AR interrupt
+ * and wake a process up.
+ */
+ if (line_number == (ar->height - 1)) { /* end of line */
+
+ ar->start_capture = 0;
+
+ /* disable AR interrupt request */
+ arvcr1 = ar_inl(ARVCR1);
+ arvcr1 &= ~ARVCR1_HIEN; /* clear int. flag */
+ ar_outl(arvcr1, ARVCR1); /* disable */
+ wake_up_interruptible(&ar->wait);
+ } else {
+#if 0
+ ar_outl(ar->line_buff, M32R_DMA0CDA_PORTL);
+ ar_outl(0xa1861300, M32R_DMA0CR0_PORTL);
+#endif
+ enable_dma();
+ }
+ }
+}
+#endif
+
+/*
+ * ar_initialize()
+ * ar_initialize() is called by video_register_device() and
+ * initializes AR LSI and peripherals.
+ *
+ * -1 is returned in all failures.
+ * 0 is returned in success.
+ *
+ */
+static int ar_initialize(struct video_device *dev)
+{
+ struct ar_device *ar = dev->priv;
+ unsigned long cr = 0;
+ int i,found=0;
+
+ DEBUG(1, "ar_initialize:\n");
+
+ /*
+ * initialize AR LSI
+ */
+ ar_outl(0, ARVCR0); /* assert reset of AR LSI */
+ for (i = 0; i < 0x18; i++) /* wait for over 10 cycles @ 27MHz */
+ cpu_relax();
+ ar_outl(ARVCR0_RST, ARVCR0); /* negate reset of AR LSI (enable) */
+ for (i = 0; i < 0x40d; i++) /* wait for over 420 cycles @ 27MHz */
+ cpu_relax();
+
+ /* AR uses INT3 of CPU as interrupt pin. */
+ ar_outl(ARINTSEL_INT3, ARINTSEL);
+
+ if (ar->size == AR_SIZE_QVGA)
+ cr |= ARVCR1_QVGA;
+ if (ar->mode == AR_MODE_NORMAL)
+ cr |= ARVCR1_NORMAL;
+ ar_outl(cr, ARVCR1);
+
+ /*
+ * Initialize IIC so that CPU can communicate with AR LSI,
+ * and send boot commands to AR LSI.
+ */
+ init_iic();
+
+ for (i = 0; i < 0x100000; i++) { /* > 0xa1d10, 56ms */
+ if ((ar_inl(ARVCR0) & ARVCR0_VDS)) { /* VSYNC */
+ found = 1;
+ break;
+ }
+ }
+
+ if (found == 0)
+ return -ENODEV;
+
+ printk("arv: Initializing ");
+
+ iic(2,0x78,0x11,0x01,0x00); /* start */
+ iic(3,0x78,0x12,0x00,0x06);
+ iic(3,0x78,0x12,0x12,0x30);
+ iic(3,0x78,0x12,0x15,0x58);
+ iic(3,0x78,0x12,0x17,0x30);
+ printk(".");
+ iic(3,0x78,0x12,0x1a,0x97);
+ iic(3,0x78,0x12,0x1b,0xff);
+ iic(3,0x78,0x12,0x1c,0xff);
+ iic(3,0x78,0x12,0x26,0x10);
+ iic(3,0x78,0x12,0x27,0x00);
+ printk(".");
+ iic(2,0x78,0x34,0x02,0x00);
+ iic(2,0x78,0x7a,0x10,0x00);
+ iic(2,0x78,0x80,0x39,0x00);
+ iic(2,0x78,0x81,0xe6,0x00);
+ iic(2,0x78,0x8d,0x00,0x00);
+ printk(".");
+ iic(2,0x78,0x8e,0x0c,0x00);
+ iic(2,0x78,0x8f,0x00,0x00);
+#if 0
+ iic(2,0x78,0x90,0x00,0x00); /* AWB on=1 off=0 */
+#endif
+ iic(2,0x78,0x93,0x01,0x00);
+ iic(2,0x78,0x94,0xcd,0x00);
+ iic(2,0x78,0x95,0x00,0x00);
+ printk(".");
+ iic(2,0x78,0x96,0xa0,0x00);
+ iic(2,0x78,0x97,0x00,0x00);
+ iic(2,0x78,0x98,0x60,0x00);
+ iic(2,0x78,0x99,0x01,0x00);
+ iic(2,0x78,0x9a,0x19,0x00);
+ printk(".");
+ iic(2,0x78,0x9b,0x02,0x00);
+ iic(2,0x78,0x9c,0xe8,0x00);
+ iic(2,0x78,0x9d,0x02,0x00);
+ iic(2,0x78,0x9e,0x2e,0x00);
+ iic(2,0x78,0xb8,0x78,0x00);
+ iic(2,0x78,0xba,0x05,0x00);
+#if 0
+ iic(2,0x78,0x83,0x8c,0x00); /* brightness */
+#endif
+ printk(".");
+
+ /* color correction */
+ iic(3,0x78,0x49,0x00,0x95); /* a */
+ iic(3,0x78,0x49,0x01,0x96); /* b */
+ iic(3,0x78,0x49,0x03,0x85); /* c */
+ iic(3,0x78,0x49,0x04,0x97); /* d */
+ iic(3,0x78,0x49,0x02,0x7e); /* e(Lo) */
+ iic(3,0x78,0x49,0x05,0xa4); /* f(Lo) */
+ iic(3,0x78,0x49,0x06,0x04); /* e(Hi) */
+ iic(3,0x78,0x49,0x07,0x04); /* e(Hi) */
+ iic(2,0x78,0x48,0x01,0x00); /* on=1 off=0 */
+
+ printk(".");
+ iic(2,0x78,0x11,0x00,0x00); /* end */
+ printk(" done\n");
+ return 0;
+}
+
+
+void ar_release(struct video_device *vfd)
+{
+ struct ar_device *ar = vfd->priv;
+ down(&ar->lock);
+ video_device_release(vfd);
+}
+
+/****************************************************************************
+ *
+ * Video4Linux Module functions
+ *
+ ****************************************************************************/
+static struct file_operations ar_fops = {
+ .owner = THIS_MODULE,
+ .open = video_exclusive_open,
+ .release = video_exclusive_release,
+ .read = ar_read,
+ .ioctl = ar_ioctl,
+ .llseek = no_llseek,
+};
+
+static struct video_device ar_template = {
+ .owner = THIS_MODULE,
+ .name = "Colour AR VGA",
+ .type = VID_TYPE_CAPTURE,
+ .hardware = VID_HARDWARE_ARV,
+ .fops = &ar_fops,
+ .release = ar_release,
+ .minor = -1,
+};
+
+#define ALIGN4(x) ((((int)(x)) & 0x3) == 0)
+static struct ar_device ardev;
+
+static int __init ar_init(void)
+{
+ struct ar_device *ar;
+ int ret;
+ int i;
+
+ DEBUG(1, "ar_init:\n");
+ ret = -EIO;
+ printk(KERN_INFO "arv: Colour AR VGA driver %s\n", VERSION);
+
+ ar = &ardev;
+ memset(ar, 0, sizeof(struct ar_device));
+
+#if USE_INT
+ /* allocate a DMA buffer for 1 line. */
+ ar->line_buff = kmalloc(MAX_AR_LINE_BYTES, GFP_KERNEL | GFP_DMA);
+ if (ar->line_buff == NULL || ! ALIGN4(ar->line_buff)) {
+ printk("arv: buffer allocation failed for DMA.\n");
+ ret = -ENOMEM;
+ goto out_end;
+ }
+#endif
+ /* allocate buffers for a frame */
+ for (i = 0; i < MAX_AR_HEIGHT; i++) {
+ ar->frame[i] = kmalloc(MAX_AR_LINE_BYTES, GFP_KERNEL);
+ if (ar->frame[i] == NULL || ! ALIGN4(ar->frame[i])) {
+ printk("arv: buffer allocation failed for frame.\n");
+ ret = -ENOMEM;
+ goto out_line_buff;
+ }
+ }
+
+ ar->vdev = video_device_alloc();
+ if (!ar->vdev) {
+ printk(KERN_ERR "arv: video_device_alloc() failed\n");
+ return -ENOMEM;
+ }
+ memcpy(ar->vdev, &ar_template, sizeof(ar_template));
+ ar->vdev->priv = ar;
+
+ if (vga) {
+ ar->width = AR_WIDTH_VGA;
+ ar->height = AR_HEIGHT_VGA;
+ ar->size = AR_SIZE_VGA;
+ ar->frame_bytes = AR_FRAME_BYTES_VGA;
+ ar->line_bytes = AR_LINE_BYTES_VGA;
+ if (vga_interlace)
+ ar->mode = AR_MODE_INTERLACE;
+ else
+ ar->mode = AR_MODE_NORMAL;
+ } else {
+ ar->width = AR_WIDTH_QVGA;
+ ar->height = AR_HEIGHT_QVGA;
+ ar->size = AR_SIZE_QVGA;
+ ar->frame_bytes = AR_FRAME_BYTES_QVGA;
+ ar->line_bytes = AR_LINE_BYTES_QVGA;
+ ar->mode = AR_MODE_INTERLACE;
+ }
+ init_MUTEX(&ar->lock);
+ init_waitqueue_head(&ar->wait);
+
+#if USE_INT
+ if (request_irq(M32R_IRQ_INT3, ar_interrupt, 0, "arv", ar)) {
+ printk("arv: request_irq(%d) failed.\n", M32R_IRQ_INT3);
+ ret = -EIO;
+ goto out_irq;
+ }
+#endif
+
+ if (ar_initialize(ar->vdev) != 0) {
+ printk("arv: M64278 not found.\n");
+ ret = -ENODEV;
+ goto out_dev;
+ }
+
+ /*
+ * ok, we can initialize h/w according to parameters,
+ * so register video device as a frame grabber type.
+ * device is named "video[0-64]".
+ * video_register_device() initializes h/w using ar_initialize().
+ */
+ if (video_register_device(ar->vdev, VFL_TYPE_GRABBER, video_nr) != 0) {
+ /* return -1, -ENFILE(full) or others */
+ printk("arv: register video (Colour AR) failed.\n");
+ ret = -ENODEV;
+ goto out_dev;
+ }
+
+ printk("video%d: Found M64278 VGA (IRQ %d, Freq %dMHz).\n",
+ ar->vdev->minor, M32R_IRQ_INT3, freq);
+
+ return 0;
+
+out_dev:
+#if USE_INT
+ free_irq(M32R_IRQ_INT3, ar);
+
+out_irq:
+#endif
+ for (i = 0; i < MAX_AR_HEIGHT; i++) {
+ if (ar->frame[i])
+ kfree(ar->frame[i]);
+ }
+
+out_line_buff:
+#if USE_INT
+ kfree(ar->line_buff);
+
+out_end:
+#endif
+ return ret;
+}
+
+
+static int __init ar_init_module(void)
+{
+ freq = (boot_cpu_data.bus_clock / 1000000);
+ printk("arv: Bus clock %d\n", freq);
+ if (freq != 50 && freq != 75)
+ freq = DEFAULT_FREQ;
+ return ar_init();
+}
+
+static void __exit ar_cleanup_module(void)
+{
+ struct ar_device *ar;
+ int i;
+
+ ar = &ardev;
+ video_unregister_device(ar->vdev);
+#if USE_INT
+ free_irq(M32R_IRQ_INT3, ar);
+#endif
+ for (i = 0; i < MAX_AR_HEIGHT; i++) {
+ if (ar->frame[i])
+ kfree(ar->frame[i]);
+ }
+#if USE_INT
+ kfree(ar->line_buff);
+#endif
+}
+
+module_init(ar_init_module);
+module_exit(ar_cleanup_module);
+
+MODULE_AUTHOR("Takeo Takahashi <takahashi.takeo@renesas.com>");
+MODULE_DESCRIPTION("Colour AR M64278(VGA) for Video4Linux");
+MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.