+++ /dev/null
-/*
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/videodev2.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-fh.h>
-#include <linux/mutex.h>
-
-#include <linux/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(KERN_INFO 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 "0.0.5"
-
-#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 {
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- 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 mutex lock;
-};
-
-static struct ar ardev;
-
-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; /* default mode(0:QVGA mode, other:VGA mode) */
-static int vga_interlace; /* 0 is normal mode for, else interlace mode */
-module_param(freq, int, 0);
-module_param(vga, int, 0);
-module_param(vga_interlace, int, 0);
-
-static 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 void wait_acknowledge(void)
-{
- int i;
-
- for (i = 0; i < 1000; i++)
- cpu_relax();
- while (ar_inl(PLDI2CSTS) & PLDI2CSTS_NOACK)
- cpu_relax();
-}
-
-/*******************************************************************
- * I2C functions
- *******************************************************************/
-static 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();
-}
-
-
-static 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 void wait_for_vertical_sync(struct ar *ar, 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)
- v4l2_err(&ar->v4l2_dev, "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 ar *ar = video_drvdata(file);
- 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;
-
- mutex_lock(&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) */
-
- /*
- * Okay, kick AR LSI to invoke an interrupt
- */
- ar->start_capture = -1;
- ar_outl(arvcr1 | ARVCR1_HIEN, ARVCR1);
- local_irq_restore(flags);
- /* .... AR interrupts .... */
- wait_event_interruptible(ar->wait, ar->start_capture == 0);
- if (signal_pending(current)) {
- printk(KERN_ERR "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(ar, 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(ar, 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)) {
- v4l2_err(&ar->v4l2_dev, "failed while copy_to_user yuv.\n");
- ret = -EFAULT;
- goto out_up;
- }
- DEBUG(1, "ret = %d\n", ret);
-out_up:
- mutex_unlock(&ar->lock);
- return ret;
-}
-
-static int ar_querycap(struct file *file, void *priv,
- struct v4l2_capability *vcap)
-{
- struct ar *ar = video_drvdata(file);
-
- strlcpy(vcap->driver, ar->vdev.name, sizeof(vcap->driver));
- strlcpy(vcap->card, "Colour AR VGA", sizeof(vcap->card));
- strlcpy(vcap->bus_info, "Platform", sizeof(vcap->bus_info));
- vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
- vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
- return 0;
-}
-
-static int ar_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
-{
- if (vin->index > 0)
- return -EINVAL;
- strlcpy(vin->name, "Camera", sizeof(vin->name));
- vin->type = V4L2_INPUT_TYPE_CAMERA;
- vin->audioset = 0;
- vin->tuner = 0;
- vin->std = V4L2_STD_ALL;
- vin->status = 0;
- return 0;
-}
-
-static int ar_g_input(struct file *file, void *fh, unsigned int *inp)
-{
- *inp = 0;
- return 0;
-}
-
-static int ar_s_input(struct file *file, void *fh, unsigned int inp)
-{
- return inp ? -EINVAL : 0;
-}
-
-static int ar_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
-{
- struct ar *ar = video_drvdata(file);
- struct v4l2_pix_format *pix = &fmt->fmt.pix;
-
- pix->width = ar->width;
- pix->height = ar->height;
- pix->pixelformat = V4L2_PIX_FMT_YUV422P;
- pix->field = (ar->mode == AR_MODE_NORMAL) ? V4L2_FIELD_NONE : V4L2_FIELD_INTERLACED;
- pix->bytesperline = ar->width;
- pix->sizeimage = 2 * ar->width * ar->height;
- /* Just a guess */
- pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
- return 0;
-}
-
-static int ar_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
-{
- struct ar *ar = video_drvdata(file);
- struct v4l2_pix_format *pix = &fmt->fmt.pix;
-
- if (pix->height <= AR_HEIGHT_QVGA || pix->width <= AR_WIDTH_QVGA) {
- pix->height = AR_HEIGHT_QVGA;
- pix->width = AR_WIDTH_QVGA;
- pix->field = V4L2_FIELD_INTERLACED;
- } else {
- pix->height = AR_HEIGHT_VGA;
- pix->width = AR_WIDTH_VGA;
- pix->field = vga_interlace ? V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE;
- }
- pix->pixelformat = V4L2_PIX_FMT_YUV422P;
- pix->bytesperline = ar->width;
- pix->sizeimage = 2 * ar->width * ar->height;
- /* Just a guess */
- pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
- return 0;
-}
-
-static int ar_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
-{
- struct ar *ar = video_drvdata(file);
- struct v4l2_pix_format *pix = &fmt->fmt.pix;
- int ret = ar_try_fmt_vid_cap(file, fh, fmt);
-
- if (ret)
- return ret;
- mutex_lock(&ar->lock);
- ar->width = pix->width;
- ar->height = pix->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;
- }
- /* Ok we figured out what to use from our wide choice */
- mutex_unlock(&ar->lock);
- return 0;
-}
-
-static int ar_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
-{
- static struct v4l2_fmtdesc formats[] = {
- { 0, 0, 0,
- "YUV 4:2:2 Planar", V4L2_PIX_FMT_YUV422P,
- { 0, 0, 0, 0 }
- },
- };
- enum v4l2_buf_type type = fmt->type;
-
- if (fmt->index > 0)
- return -EINVAL;
-
- *fmt = formats[fmt->index];
- fmt->type = type;
- return 0;
-}
-
-#if USE_INT
-/*
- * Interrupt handler
- */
-static void ar_interrupt(int irq, void *dev)
-{
- struct ar *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 ar *ar)
-{
- 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;
-
- v4l2_info(&ar->v4l2_dev, "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(KERN_CONT ".");
- 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(KERN_CONT ".");
- 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(KERN_CONT ".");
- 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(KERN_CONT ".");
- 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(KERN_CONT ".");
- 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(KERN_CONT ".");
-
- /* 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(KERN_CONT ".");
- iic(2, 0x78, 0x11, 0x00, 0x00); /* end */
- printk(KERN_CONT " done\n");
- return 0;
-}
-
-
-/****************************************************************************
- *
- * Video4Linux Module functions
- *
- ****************************************************************************/
-
-static const struct v4l2_file_operations ar_fops = {
- .owner = THIS_MODULE,
- .open = v4l2_fh_open,
- .release = v4l2_fh_release,
- .read = ar_read,
- .unlocked_ioctl = video_ioctl2,
-};
-
-static const struct v4l2_ioctl_ops ar_ioctl_ops = {
- .vidioc_querycap = ar_querycap,
- .vidioc_g_input = ar_g_input,
- .vidioc_s_input = ar_s_input,
- .vidioc_enum_input = ar_enum_input,
- .vidioc_enum_fmt_vid_cap = ar_enum_fmt_vid_cap,
- .vidioc_g_fmt_vid_cap = ar_g_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = ar_s_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = ar_try_fmt_vid_cap,
-};
-
-#define ALIGN4(x) ((((int)(x)) & 0x3) == 0)
-
-static int __init ar_init(void)
-{
- struct ar *ar;
- struct v4l2_device *v4l2_dev;
- int ret;
- int i;
-
- ar = &ardev;
- v4l2_dev = &ar->v4l2_dev;
- strlcpy(v4l2_dev->name, "arv", sizeof(v4l2_dev->name));
- v4l2_info(v4l2_dev, "Colour AR VGA driver %s\n", VERSION);
-
- ret = v4l2_device_register(NULL, v4l2_dev);
- if (ret < 0) {
- v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
- return ret;
- }
- ret = -EIO;
-
-#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)) {
- v4l2_err(v4l2_dev, "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])) {
- v4l2_err(v4l2_dev, "buffer allocation failed for frame.\n");
- ret = -ENOMEM;
- goto out_line_buff;
- }
- }
-
- strlcpy(ar->vdev.name, "Colour AR VGA", sizeof(ar->vdev.name));
- ar->vdev.v4l2_dev = v4l2_dev;
- ar->vdev.fops = &ar_fops;
- ar->vdev.ioctl_ops = &ar_ioctl_ops;
- ar->vdev.release = video_device_release_empty;
- video_set_drvdata(&ar->vdev, 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;
- }
- mutex_init(&ar->lock);
- init_waitqueue_head(&ar->wait);
-
-#if USE_INT
- if (request_irq(M32R_IRQ_INT3, ar_interrupt, 0, "arv", ar)) {
- v4l2_err("request_irq(%d) failed.\n", M32R_IRQ_INT3);
- ret = -EIO;
- goto out_irq;
- }
-#endif
-
- if (ar_initialize(ar) != 0) {
- v4l2_err(v4l2_dev, "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 */
- v4l2_err(v4l2_dev, "register video (Colour AR) failed.\n");
- ret = -ENODEV;
- goto out_dev;
- }
-
- v4l2_info(v4l2_dev, "%s: Found M64278 VGA (IRQ %d, Freq %dMHz).\n",
- video_device_node_name(&ar->vdev), 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++)
- kfree(ar->frame[i]);
-
-out_line_buff:
-#if USE_INT
- kfree(ar->line_buff);
-
-out_end:
-#endif
- v4l2_device_unregister(&ar->v4l2_dev);
- return ret;
-}
-
-
-static int __init ar_init_module(void)
-{
- freq = (boot_cpu_data.bus_clock / 1000000);
- printk(KERN_INFO "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 *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++)
- kfree(ar->frame[i]);
-#if USE_INT
- kfree(ar->line_buff);
-#endif
- v4l2_device_unregister(&ar->v4l2_dev);
-}
-
-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");
-MODULE_VERSION(VERSION);
OSDN Git Service
