diff options
Diffstat (limited to 'drivers/media/video/sta2x11_vip.c')
| -rw-r--r-- | drivers/media/video/sta2x11_vip.c | 1550 |
1 files changed, 0 insertions, 1550 deletions
diff --git a/drivers/media/video/sta2x11_vip.c b/drivers/media/video/sta2x11_vip.c deleted file mode 100644 index 4c10205264d4..000000000000 --- a/drivers/media/video/sta2x11_vip.c +++ /dev/null @@ -1,1550 +0,0 @@ -/* - * This is the driver for the STA2x11 Video Input Port. - * - * Copyright (C) 2010 WindRiver Systems, Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * - * The full GNU General Public License is included in this distribution in - * the file called "COPYING". - * - * Author: Andreas Kies <andreas.kies@windriver.com> - * Vlad Lungu <vlad.lungu@windriver.com> - * - */ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/vmalloc.h> - -#include <linux/videodev2.h> - -#include <linux/kmod.h> - -#include <linux/pci.h> -#include <linux/interrupt.h> -#include <linux/mutex.h> -#include <linux/io.h> -#include <linux/gpio.h> -#include <linux/i2c.h> -#include <linux/delay.h> -#include <media/v4l2-common.h> -#include <media/v4l2-device.h> -#include <media/v4l2-ioctl.h> -#include <media/videobuf-dma-contig.h> - -#include "sta2x11_vip.h" - -#define DRV_NAME "sta2x11_vip" -#define DRV_VERSION "1.3" - -#ifndef PCI_DEVICE_ID_STMICRO_VIP -#define PCI_DEVICE_ID_STMICRO_VIP 0xCC0D -#endif - -#define MAX_FRAMES 4 - -/*Register offsets*/ -#define DVP_CTL 0x00 -#define DVP_TFO 0x04 -#define DVP_TFS 0x08 -#define DVP_BFO 0x0C -#define DVP_BFS 0x10 -#define DVP_VTP 0x14 -#define DVP_VBP 0x18 -#define DVP_VMP 0x1C -#define DVP_ITM 0x98 -#define DVP_ITS 0x9C -#define DVP_STA 0xA0 -#define DVP_HLFLN 0xA8 -#define DVP_RGB 0xC0 -#define DVP_PKZ 0xF0 - -/*Register fields*/ -#define DVP_CTL_ENA 0x00000001 -#define DVP_CTL_RST 0x80000000 -#define DVP_CTL_DIS (~0x00040001) - -#define DVP_IT_VSB 0x00000008 -#define DVP_IT_VST 0x00000010 -#define DVP_IT_FIFO 0x00000020 - -#define DVP_HLFLN_SD 0x00000001 - -#define REG_WRITE(vip, reg, value) iowrite32((value), (vip->iomem)+(reg)) -#define REG_READ(vip, reg) ioread32((vip->iomem)+(reg)) - -#define SAVE_COUNT 8 -#define AUX_COUNT 3 -#define IRQ_COUNT 1 - -/** - * struct sta2x11_vip - All internal data for one instance of device - * @v4l2_dev: device registered in v4l layer - * @video_dev: properties of our device - * @pdev: PCI device - * @adapter: contains I2C adapter information - * @register_save_area: All relevant register are saved here during suspend - * @decoder: contains information about video DAC - * @format: pixel format, fixed UYVY - * @std: video standard (e.g. PAL/NTSC) - * @input: input line for video signal ( 0 or 1 ) - * @users: Number of open of device ( max. 1 ) - * @disabled: Device is in power down state - * @mutex: ensures exclusive opening of device - * @slock: for excluse acces of registers - * @vb_vidq: queue maintained by videobuf layer - * @capture: linked list of capture buffer - * @active: struct videobuf_buffer currently beingg filled - * @started: device is ready to capture frame - * @closing: device will be shut down - * @tcount: Number of top frames - * @bcount: Number of bottom frames - * @overflow: Number of FIFO overflows - * @mem_spare: small buffer of unused frame - * @dma_spare: dma addres of mem_spare - * @iomem: hardware base address - * @config: I2C and gpio config from platform - * - * All non-local data is accessed via this structure. - */ - -struct sta2x11_vip { - struct v4l2_device v4l2_dev; - struct video_device *video_dev; - struct pci_dev *pdev; - struct i2c_adapter *adapter; - unsigned int register_save_area[IRQ_COUNT + SAVE_COUNT + AUX_COUNT]; - struct v4l2_subdev *decoder; - struct v4l2_pix_format format; - v4l2_std_id std; - unsigned int input; - int users; - int disabled; - struct mutex mutex; /* exclusive access during open */ - spinlock_t slock; /* spin lock for hardware and queue access */ - struct videobuf_queue vb_vidq; - struct list_head capture; - struct videobuf_buffer *active; - int started, closing, tcount, bcount; - int overflow; - void *mem_spare; - dma_addr_t dma_spare; - void *iomem; - struct vip_config *config; -}; - -static const unsigned int registers_to_save[AUX_COUNT] = { - DVP_HLFLN, DVP_RGB, DVP_PKZ -}; - -static struct v4l2_pix_format formats_50[] = { - { /*PAL interlaced */ - .width = 720, - .height = 576, - .pixelformat = V4L2_PIX_FMT_UYVY, - .field = V4L2_FIELD_INTERLACED, - .bytesperline = 720 * 2, - .sizeimage = 720 * 2 * 576, - .colorspace = V4L2_COLORSPACE_SMPTE170M}, - { /*PAL top */ - .width = 720, - .height = 288, - .pixelformat = V4L2_PIX_FMT_UYVY, - .field = V4L2_FIELD_TOP, - .bytesperline = 720 * 2, - .sizeimage = 720 * 2 * 288, - .colorspace = V4L2_COLORSPACE_SMPTE170M}, - { /*PAL bottom */ - .width = 720, - .height = 288, - .pixelformat = V4L2_PIX_FMT_UYVY, - .field = V4L2_FIELD_BOTTOM, - .bytesperline = 720 * 2, - .sizeimage = 720 * 2 * 288, - .colorspace = V4L2_COLORSPACE_SMPTE170M}, - -}; - -static struct v4l2_pix_format formats_60[] = { - { /*NTSC interlaced */ - .width = 720, - .height = 480, - .pixelformat = V4L2_PIX_FMT_UYVY, - .field = V4L2_FIELD_INTERLACED, - .bytesperline = 720 * 2, - .sizeimage = 720 * 2 * 480, - .colorspace = V4L2_COLORSPACE_SMPTE170M}, - { /*NTSC top */ - .width = 720, - .height = 240, - .pixelformat = V4L2_PIX_FMT_UYVY, - .field = V4L2_FIELD_TOP, - .bytesperline = 720 * 2, - .sizeimage = 720 * 2 * 240, - .colorspace = V4L2_COLORSPACE_SMPTE170M}, - { /*NTSC bottom */ - .width = 720, - .height = 240, - .pixelformat = V4L2_PIX_FMT_UYVY, - .field = V4L2_FIELD_BOTTOM, - .bytesperline = 720 * 2, - .sizeimage = 720 * 2 * 240, - .colorspace = V4L2_COLORSPACE_SMPTE170M}, -}; - -/** - * buf_setup - Get size and number of video buffer - * @vq: queue in videobuf - * @count: Number of buffers (1..MAX_FRAMES). - * 0 use default value. - * @size: size of buffer in bytes - * - * returns size and number of buffers - * a preset value of 0 returns the default number. - * return value: 0, always succesfull. - */ -static int buf_setup(struct videobuf_queue *vq, unsigned int *count, - unsigned int *size) -{ - struct sta2x11_vip *vip = vq->priv_data; - - *size = vip->format.width * vip->format.height * 2; - if (0 == *count || MAX_FRAMES < *count) - *count = MAX_FRAMES; - return 0; -}; - -/** - * buf_prepare - prepare buffer for usage - * @vq: queue in videobuf layer - * @vb: buffer to be prepared - * @field: type of video data (interlaced/non-interlaced) - * - * Allocate or realloc buffer - * return value: 0, successful. - * - * -EINVAL, supplied buffer is too small. - * - * other, buffer could not be locked. - */ -static int buf_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, - enum v4l2_field field) -{ - struct sta2x11_vip *vip = vq->priv_data; - int ret; - - vb->size = vip->format.width * vip->format.height * 2; - if ((0 != vb->baddr) && (vb->bsize < vb->size)) - return -EINVAL; - vb->width = vip->format.width; - vb->height = vip->format.height; - vb->field = field; - - if (VIDEOBUF_NEEDS_INIT == vb->state) { - ret = videobuf_iolock(vq, vb, NULL); - if (ret) - goto fail; - } - vb->state = VIDEOBUF_PREPARED; - return 0; -fail: - videobuf_dma_contig_free(vq, vb); - vb->state = VIDEOBUF_NEEDS_INIT; - return ret; -} - -/** - * buf_queu - queue buffer for filling - * @vq: queue in videobuf layer - * @vb: buffer to be queued - * - * if capturing is already running, the buffer will be queued. Otherwise - * capture is started and the buffer is used directly. - */ -static void buf_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) -{ - struct sta2x11_vip *vip = vq->priv_data; - u32 dma; - - vb->state = VIDEOBUF_QUEUED; - - if (vip->active) { - list_add_tail(&vb->queue, &vip->capture); - return; - } - - vip->started = 1; - vip->tcount = 0; - vip->bcount = 0; - vip->active = vb; - vb->state = VIDEOBUF_ACTIVE; - - dma = videobuf_to_dma_contig(vb); - - REG_WRITE(vip, DVP_TFO, (0 << 16) | (0)); - /* despite of interlace mode, upper and lower frames start at zero */ - REG_WRITE(vip, DVP_BFO, (0 << 16) | (0)); - - switch (vip->format.field) { - case V4L2_FIELD_INTERLACED: - REG_WRITE(vip, DVP_TFS, - ((vip->format.height / 2 - 1) << 16) | - (2 * vip->format.width - 1)); - REG_WRITE(vip, DVP_BFS, ((vip->format.height / 2 - 1) << 16) | - (2 * vip->format.width - 1)); - REG_WRITE(vip, DVP_VTP, dma); - REG_WRITE(vip, DVP_VBP, dma + vip->format.width * 2); - REG_WRITE(vip, DVP_VMP, 4 * vip->format.width); - break; - case V4L2_FIELD_TOP: - REG_WRITE(vip, DVP_TFS, - ((vip->format.height - 1) << 16) | - (2 * vip->format.width - 1)); - REG_WRITE(vip, DVP_BFS, ((0) << 16) | - (2 * vip->format.width - 1)); - REG_WRITE(vip, DVP_VTP, dma); - REG_WRITE(vip, DVP_VBP, dma); - REG_WRITE(vip, DVP_VMP, 2 * vip->format.width); - break; - case V4L2_FIELD_BOTTOM: - REG_WRITE(vip, DVP_TFS, ((0) << 16) | - (2 * vip->format.width - 1)); - REG_WRITE(vip, DVP_BFS, - ((vip->format.height) << 16) | - (2 * vip->format.width - 1)); - REG_WRITE(vip, DVP_VTP, dma); - REG_WRITE(vip, DVP_VBP, dma); - REG_WRITE(vip, DVP_VMP, 2 * vip->format.width); - break; - - default: - pr_warning("VIP: unknown field format\n"); - return; - } - - REG_WRITE(vip, DVP_CTL, DVP_CTL_ENA); -} - -/** - * buff_release - release buffer - * @vq: queue in videobuf layer - * @vb: buffer to be released - * - * release buffer in videobuf layer - */ -static void buf_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) -{ - - videobuf_dma_contig_free(vq, vb); - vb->state = VIDEOBUF_NEEDS_INIT; -} - -static struct videobuf_queue_ops vip_qops = { - .buf_setup = buf_setup, - .buf_prepare = buf_prepare, - .buf_queue = buf_queue, - .buf_release = buf_release, -}; - -/** - * vip_open - open video device - * @file: descriptor of device - * - * open device, make sure it is only opened once. - * return value: 0, no error. - * - * -EBUSY, device is already opened - * - * -ENOMEM, no memory for auxiliary DMA buffer - */ -static int vip_open(struct file *file) -{ - struct video_device *dev = video_devdata(file); - struct sta2x11_vip *vip = video_get_drvdata(dev); - - mutex_lock(&vip->mutex); - vip->users++; - - if (vip->users > 1) { - vip->users--; - mutex_unlock(&vip->mutex); - return -EBUSY; - } - - file->private_data = dev; - vip->overflow = 0; - vip->started = 0; - vip->closing = 0; - vip->active = NULL; - - INIT_LIST_HEAD(&vip->capture); - vip->mem_spare = dma_alloc_coherent(&vip->pdev->dev, 64, - &vip->dma_spare, GFP_KERNEL); - if (!vip->mem_spare) { - vip->users--; - mutex_unlock(&vip->mutex); - return -ENOMEM; - } - - mutex_unlock(&vip->mutex); - videobuf_queue_dma_contig_init_cached(&vip->vb_vidq, - &vip_qops, - &vip->pdev->dev, - &vip->slock, - V4L2_BUF_TYPE_VIDEO_CAPTURE, - V4L2_FIELD_INTERLACED, - sizeof(struct videobuf_buffer), - vip, NULL); - REG_READ(vip, DVP_ITS); - REG_WRITE(vip, DVP_HLFLN, DVP_HLFLN_SD); - REG_WRITE(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST); - REG_WRITE(vip, DVP_CTL, DVP_CTL_RST); - REG_WRITE(vip, DVP_CTL, 0); - REG_READ(vip, DVP_ITS); - return 0; -} - -/** - * vip_close - close video device - * @file: descriptor of device - * - * close video device, wait until all pending operations are finished - * ( maximum FRAME_MAX buffers pending ) - * Turn off interrupts. - * - * return value: 0, always succesful. - */ -static int vip_close(struct file *file) -{ - struct video_device *dev = video_devdata(file); - struct sta2x11_vip *vip = video_get_drvdata(dev); - - vip->closing = 1; - if (vip->active) - videobuf_waiton(&vip->vb_vidq, vip->active, 0, 0); - spin_lock_irq(&vip->slock); - - REG_WRITE(vip, DVP_ITM, 0); - REG_WRITE(vip, DVP_CTL, DVP_CTL_RST); - REG_WRITE(vip, DVP_CTL, 0); - REG_READ(vip, DVP_ITS); - - vip->started = 0; - vip->active = NULL; - - spin_unlock_irq(&vip->slock); - - videobuf_stop(&vip->vb_vidq); - videobuf_mmap_free(&vip->vb_vidq); - - dma_free_coherent(&vip->pdev->dev, 64, vip->mem_spare, vip->dma_spare); - file->private_data = NULL; - mutex_lock(&vip->mutex); - vip->users--; - mutex_unlock(&vip->mutex); - return 0; -} - -/** - * vip_read - read from video input - * @file: descriptor of device - * @data: user buffer - * @count: number of bytes to be read - * @ppos: position within stream - * - * read video data from video device. - * handling is done in generic videobuf layer - * return value: provided by videobuf layer - */ -static ssize_t vip_read(struct file *file, char __user *data, - size_t count, loff_t *ppos) -{ - struct video_device *dev = file->private_data; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_read_stream(&vip->vb_vidq, data, count, ppos, 0, - file->f_flags & O_NONBLOCK); -} - -/** - * vip_mmap - map user buffer - * @file: descriptor of device - * @vma: user buffer - * - * map user space buffer into kernel mode, including DMA address. - * handling is done in generic videobuf layer. - * return value: provided by videobuf layer - */ -static int vip_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct video_device *dev = file->private_data; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_mmap_mapper(&vip->vb_vidq, vma); -} - -/** - * vip_poll - poll for event - * @file: descriptor of device - * @wait: contains events to be waited for - * - * wait for event related to video device. - * handling is done in generic videobuf layer. - * return value: provided by videobuf layer - */ -static unsigned int vip_poll(struct file *file, struct poll_table_struct *wait) -{ - struct video_device *dev = file->private_data; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_poll_stream(file, &vip->vb_vidq, wait); -} - -/** - * vidioc_querycap - return capabilities of device - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @cap: contains return values - * - * the capabilities of the device are returned - * - * return value: 0, no error. - */ -static int vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - memset(cap, 0, sizeof(struct v4l2_capability)); - strcpy(cap->driver, DRV_NAME); - strcpy(cap->card, DRV_NAME); - cap->version = 0; - snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", - pci_name(vip->pdev)); - cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | - V4L2_CAP_STREAMING; - - return 0; -} - -/** - * vidioc_s_std - set video standard - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @std: contains standard to be set - * - * the video standard is set - * - * return value: 0, no error. - * - * -EIO, no input signal detected - * - * other, returned from video DAC. - */ -static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *std) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - v4l2_std_id oldstd = vip->std, newstd; - int status; - - if (V4L2_STD_ALL == *std) { - v4l2_subdev_call(vip->decoder, core, s_std, *std); - ssleep(2); - v4l2_subdev_call(vip->decoder, video, querystd, &newstd); - v4l2_subdev_call(vip->decoder, video, g_input_status, &status); - if (status & V4L2_IN_ST_NO_SIGNAL) - return -EIO; - *std = vip->std = newstd; - if (oldstd != *std) { - if (V4L2_STD_525_60 & (*std)) - vip->format = formats_60[0]; - else - vip->format = formats_50[0]; - } - return 0; - } - - if (oldstd != *std) { - if (V4L2_STD_525_60 & (*std)) - vip->format = formats_60[0]; - else - vip->format = formats_50[0]; - } - - return v4l2_subdev_call(vip->decoder, core, s_std, *std); -} - -/** - * vidioc_g_std - get video standard - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @std: contains return values - * - * the current video standard is returned - * - * return value: 0, no error. - */ -static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - *std = vip->std; - return 0; -} - -/** - * vidioc_querystd - get possible video standards - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @std: contains return values - * - * all possible video standards are returned - * - * return value: delivered by video DAC routine. - */ -static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return v4l2_subdev_call(vip->decoder, video, querystd, std); - -} - -/** - * vidioc_queryctl - get possible control settings - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @ctrl: contains return values - * - * return possible values for a control - * return value: delivered by video DAC routine. - */ -static int vidioc_queryctrl(struct file *file, void *priv, - struct v4l2_queryctrl *ctrl) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return v4l2_subdev_call(vip->decoder, core, queryctrl, ctrl); -} - -/** - * vidioc_g_ctl - get control value - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @ctrl: contains return values - * - * return setting for a control value - * return value: delivered by video DAC routine. - */ -static int vidioc_g_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return v4l2_subdev_call(vip->decoder, core, g_ctrl, ctrl); -} - -/** - * vidioc_s_ctl - set control value - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @ctrl: contains value to be set - * - * set value for a specific control - * return value: delivered by video DAC routine. - */ -static int vidioc_s_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return v4l2_subdev_call(vip->decoder, core, s_ctrl, ctrl); -} - -/** - * vidioc_enum_input - return name of input line - * @file: descriptor of device (not used) - * @priv: points to current videodevice - * @inp: contains return values - * - * the user friendly name of the input line is returned - * - * return value: 0, no error. - * - * -EINVAL, input line number out of range - */ -static int vidioc_enum_input(struct file *file, void *priv, - struct v4l2_input *inp) -{ - if (inp->index > 1) - return -EINVAL; - - inp->type = V4L2_INPUT_TYPE_CAMERA; - inp->std = V4L2_STD_ALL; - sprintf(inp->name, "Camera %u", inp->index); - - return 0; -} - -/** - * vidioc_s_input - set input line - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @i: new input line number - * - * the current active input line is set - * - * return value: 0, no error. - * - * -EINVAL, line number out of range - */ -static int vidioc_s_input(struct file *file, void *priv, unsigned int i) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - int ret; - - if (i > 1) - return -EINVAL; - ret = v4l2_subdev_call(vip->decoder, video, s_routing, i, 0, 0); - - if (!ret) - vip->input = i; - - return 0; -} - -/** - * vidioc_g_input - return input line - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @i: returned input line number - * - * the current active input line is returned - * - * return value: always 0. - */ -static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - *i = vip->input; - return 0; -} - -/** - * vidioc_enum_fmt_vid_cap - return video capture format - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @f: returned format information - * - * returns name and format of video capture - * Only UYVY is supported by hardware. - * - * return value: always 0. - */ -static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - - if (f->index != 0) - return -EINVAL; - - strcpy(f->description, "4:2:2, packed, UYVY"); - f->pixelformat = V4L2_PIX_FMT_UYVY; - f->flags = 0; - return 0; -} - -/** - * vidioc_try_fmt_vid_cap - set video capture format - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @f: new format - * - * new video format is set which includes width and - * field type. width is fixed to 720, no scaling. - * Only UYVY is supported by this hardware. - * the minimum height is 200, the maximum is 576 (PAL) - * - * return value: 0, no error - * - * -EINVAL, pixel or field format not supported - * - */ -static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - int interlace_lim; - - if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat) - return -EINVAL; - - if (V4L2_STD_525_60 & vip->std) - interlace_lim = 240; - else - interlace_lim = 288; - - switch (f->fmt.pix.field) { - case V4L2_FIELD_ANY: - if (interlace_lim < f->fmt.pix.height) - f->fmt.pix.field = V4L2_FIELD_INTERLACED; - else - f->fmt.pix.field = V4L2_FIELD_BOTTOM; - break; - case V4L2_FIELD_TOP: - case V4L2_FIELD_BOTTOM: - if (interlace_lim < f->fmt.pix.height) - f->fmt.pix.height = interlace_lim; - break; - case V4L2_FIELD_INTERLACED: - break; - default: - return -EINVAL; - } - - f->fmt.pix.height &= ~1; - if (2 * interlace_lim < f->fmt.pix.height) - f->fmt.pix.height = 2 * interlace_lim; - if (200 > f->fmt.pix.height) - f->fmt.pix.height = 200; - f->fmt.pix.width = 720; - f->fmt.pix.bytesperline = f->fmt.pix.width * 2; - f->fmt.pix.sizeimage = f->fmt.pix.width * 2 * f->fmt.pix.height; - f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; - f->fmt.pix.priv = 0; - return 0; -} - -/** - * vidioc_s_fmt_vid_cap - set current video format parameters - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @f: returned format information - * - * set new capture format - * return value: 0, no error - * - * other, delivered by video DAC routine. - */ -static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - int ret; - - ret = vidioc_try_fmt_vid_cap(file, priv, f); - if (ret) - return ret; - - memcpy(&vip->format, &f->fmt.pix, sizeof(struct v4l2_pix_format)); - return 0; -} - -/** - * vidioc_g_fmt_vid_cap - get current video format parameters - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @f: contains format information - * - * returns current video format parameters - * - * return value: 0, always successful - */ -static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - memcpy(&f->fmt.pix, &vip->format, sizeof(struct v4l2_pix_format)); - return 0; -} - -/** - * vidioc_reqfs - request buffer - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @p: video buffer - * - * Handling is done in generic videobuf layer. - */ -static int vidioc_reqbufs(struct file *file, void *priv, - struct v4l2_requestbuffers *p) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_reqbufs(&vip->vb_vidq, p); -} - -/** - * vidioc_querybuf - query buffer - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @p: video buffer - * - * query buffer state. - * Handling is done in generic videobuf layer. - */ -static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_querybuf(&vip->vb_vidq, p); -} - -/** - * vidioc_qbuf - queue a buffer - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @p: video buffer - * - * Handling is done in generic videobuf layer. - */ -static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_qbuf(&vip->vb_vidq, p); -} - -/** - * vidioc_dqbuf - dequeue a buffer - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @p: video buffer - * - * Handling is done in generic videobuf layer. - */ -static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_dqbuf(&vip->vb_vidq, p, file->f_flags & O_NONBLOCK); -} - -/** - * vidioc_streamon - turn on streaming - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @type: type of capture - * - * turn on streaming. - * Handling is done in generic videobuf layer. - */ -static int vidioc_streamon(struct file *file, void *priv, - enum v4l2_buf_type type) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_streamon(&vip->vb_vidq); -} - -/** - * vidioc_streamoff - turn off streaming - * @file: descriptor of device ( not used) - * @priv: points to current videodevice - * @type: type of capture - * - * turn off streaming. - * Handling is done in generic videobuf layer. - */ -static int vidioc_streamoff(struct file *file, void *priv, - enum v4l2_buf_type type) -{ - struct video_device *dev = priv; - struct sta2x11_vip *vip = video_get_drvdata(dev); - - return videobuf_streamoff(&vip->vb_vidq); -} - -static const struct v4l2_file_operations vip_fops = { - .owner = THIS_MODULE, - .open = vip_open, - .release = vip_close, - .ioctl = video_ioctl2, - .read = vip_read, - .mmap = vip_mmap, - .poll = vip_poll -}; - -static const struct v4l2_ioctl_ops vip_ioctl_ops = { - .vidioc_querycap = vidioc_querycap, - .vidioc_s_std = vidioc_s_std, - .vidioc_g_std = vidioc_g_std, - .vidioc_querystd = vidioc_querystd, - .vidioc_queryctrl = vidioc_queryctrl, - .vidioc_g_ctrl = vidioc_g_ctrl, - .vidioc_s_ctrl = vidioc_s_ctrl, - .vidioc_enum_input = vidioc_enum_input, - .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, - .vidioc_s_input = vidioc_s_input, - .vidioc_g_input = vidioc_g_input, - .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, - .vidioc_reqbufs = vidioc_reqbufs, - .vidioc_querybuf = vidioc_querybuf, - .vidioc_qbuf = vidioc_qbuf, - .vidioc_dqbuf = vidioc_dqbuf, - .vidioc_streamon = vidioc_streamon, - .vidioc_streamoff = vidioc_streamoff, -}; - -static struct video_device video_dev_template = { - .name = DRV_NAME, - .release = video_device_release, - .fops = &vip_fops, - .ioctl_ops = &vip_ioctl_ops, - .tvnorms = V4L2_STD_ALL, -}; - -/** - * vip_irq - interrupt routine - * @irq: Number of interrupt ( not used, correct number is assumed ) - * @vip: local data structure containing all information - * - * check for both frame interrupts set ( top and bottom ). - * check FIFO overflow, but limit number of log messages after open. - * signal a complete buffer if done. - * dequeue a new buffer if available. - * disable VIP if no buffer available. - * - * return value: IRQ_NONE, interrupt was not generated by VIP - * - * IRQ_HANDLED, interrupt done. - */ -static irqreturn_t vip_irq(int irq, struct sta2x11_vip *vip) -{ - u32 status, dma; - unsigned long flags; - struct videobuf_buffer *vb; - - status = REG_READ(vip, DVP_ITS); - - if (!status) { - pr_debug("VIP: irq ignored\n"); - return IRQ_NONE; - } - - if (!vip->started) - return IRQ_HANDLED; - - if (status & DVP_IT_VSB) - vip->bcount++; - - if (status & DVP_IT_VST) - vip->tcount++; - - if ((DVP_IT_VSB | DVP_IT_VST) == (status & (DVP_IT_VST | DVP_IT_VSB))) { - /* this is bad, we are too slow, hope the condition is gone - * on the next frame */ - pr_info("VIP: both irqs\n"); - return IRQ_HANDLED; - } - - if (status & DVP_IT_FIFO) { - if (5 > vip->overflow++) - pr_info("VIP: fifo overflow\n"); - } - - if (2 > vip->tcount) - return IRQ_HANDLED; - - if (status & DVP_IT_VSB) - return IRQ_HANDLED; - - spin_lock_irqsave(&vip->slock, flags); - - REG_WRITE(vip, DVP_CTL, REG_READ(vip, DVP_CTL) & ~DVP_CTL_ENA); - if (vip->active) { - do_gettimeofday(&vip->active->ts); - vip->active->field_count++; - vip->active->state = VIDEOBUF_DONE; - wake_up(&vip->active->done); - vip->active = NULL; - } - if (!vip->closing) { - if (list_empty(&vip->capture)) - goto done; - - vb = list_first_entry(&vip->capture, struct videobuf_buffer, - queue); - if (NULL == vb) { - pr_info("VIP: no buffer\n"); - goto done; - } - vb->state = VIDEOBUF_ACTIVE; - list_del(&vb->queue); - vip->active = vb; - dma = videobuf_to_dma_contig(vb); - switch (vip->format.field) { - case V4L2_FIELD_INTERLACED: - REG_WRITE(vip, DVP_VTP, dma); - REG_WRITE(vip, DVP_VBP, dma + vip->format.width * 2); - break; - case V4L2_FIELD_TOP: - case V4L2_FIELD_BOTTOM: - REG_WRITE(vip, DVP_VTP, dma); - REG_WRITE(vip, DVP_VBP, dma); - break; - default: - pr_warning("VIP: unknown field format\n"); - goto done; - break; - } - REG_WRITE(vip, DVP_CTL, REG_READ(vip, DVP_CTL) | DVP_CTL_ENA); - } -done: - spin_unlock_irqrestore(&vip->slock, flags); - return IRQ_HANDLED; -} - -/** - * vip_gpio_reserve - reserve gpio pin - * @dev: device - * @pin: GPIO pin number - * @dir: direction, input or output - * @name: GPIO pin name - * - */ -static int vip_gpio_reserve(struct device *dev, int pin, int dir, - const char *name) -{ - int ret; - - if (pin == -1) - return 0; - - ret = gpio_request(pin, name); - if (ret) { - dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name); - return ret; - } - - ret = gpio_direction_output(pin, dir); - if (ret) { - dev_err(dev, "Failed to set direction for pin %d (%s)\n", - pin, name); - gpio_free(pin); - return ret; - } - - ret = gpio_export(pin, false); - if (ret) { - dev_err(dev, "Failed to export pin %d (%s)\n", pin, name); - gpio_free(pin); - return ret; - } - - return 0; -} - -/** - * vip_gpio_release - release gpio pin - * @dev: device - * @pin: GPIO pin number - * @name: GPIO pin name - * - */ -static void vip_gpio_release(struct device *dev, int pin, const char *name) -{ - if (pin != -1) { - dev_dbg(dev, "releasing pin %d (%s)\n", pin, name); - gpio_unexport(pin); - gpio_free(pin); - } -} - -/** - * sta2x11_vip_init_one - init one instance of video device - * @pdev: PCI device - * @ent: (not used) - * - * allocate reset pins for DAC. - * Reset video DAC, this is done via reset line. - * allocate memory for managing device - * request interrupt - * map IO region - * register device - * find and initialize video DAC - * - * return value: 0, no error - * - * -ENOMEM, no memory - * - * -ENODEV, device could not be detected or registered - */ -static int __devinit sta2x11_vip_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - int ret; - struct sta2x11_vip *vip; - struct vip_config *config; - - ret = pci_enable_device(pdev); - if (ret) - return ret; - - config = dev_get_platdata(&pdev->dev); - if (!config) { - dev_info(&pdev->dev, "VIP slot disabled\n"); - ret = -EINVAL; - goto disable; - } - - ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0, - config->pwr_name); - if (ret) - goto disable; - - if (config->reset_pin >= 0) { - ret = vip_gpio_reserve(&pdev->dev, config->reset_pin, 0, - config->reset_name); - if (ret) { - vip_gpio_release(&pdev->dev, config->pwr_pin, - config->pwr_name); - goto disable; - } - } - - if (config->pwr_pin != -1) { - /* Datasheet says 5ms between PWR and RST */ - usleep_range(5000, 25000); - ret = gpio_direction_output(config->pwr_pin, 1); - } - - if (config->reset_pin != -1) { - /* Datasheet says 5ms between PWR and RST */ - usleep_range(5000, 25000); - ret = gpio_direction_output(config->reset_pin, 1); - } - usleep_range(5000, 25000); - - vip = kzalloc(sizeof(struct sta2x11_vip), GFP_KERNEL); - if (!vip) { - ret = -ENOMEM; - goto release_gpios; - } - - vip->pdev = pdev; - vip->std = V4L2_STD_PAL; - vip->format = formats_50[0]; - vip->config = config; - - if (v4l2_device_register(&pdev->dev, &vip->v4l2_dev)) - goto free_mem; - - dev_dbg(&pdev->dev, "BAR #0 at 0x%lx 0x%lx irq %d\n", - (unsigned long)pci_resource_start(pdev, 0), - (unsigned long)pci_resource_len(pdev, 0), pdev->irq); - - pci_set_master(pdev); - - ret = pci_request_regions(pdev, DRV_NAME); - if (ret) - goto unreg; - - vip->iomem = pci_iomap(pdev, 0, 0x100); - if (!vip->iomem) { - ret = -ENOMEM; /* FIXME */ - goto release; - } - - pci_enable_msi(pdev); - - INIT_LIST_HEAD(&vip->capture); - spin_lock_init(&vip->slock); - mutex_init(&vip->mutex); - vip->started = 0; - vip->disabled = 0; - - ret = request_irq(pdev->irq, - (irq_handler_t) vip_irq, - IRQF_SHARED, DRV_NAME, vip); - if (ret) { - dev_err(&pdev->dev, "request_irq failed\n"); - ret = -ENODEV; - goto unmap; - } - - vip->video_dev = video_device_alloc(); - if (!vip->video_dev) { - ret = -ENOMEM; - goto release_irq; - } - - *(vip->video_dev) = video_dev_template; - video_set_drvdata(vip->video_dev, vip); - - ret = video_register_device(vip->video_dev, VFL_TYPE_GRABBER, -1); - if (ret) - goto vrelease; - - vip->adapter = i2c_get_adapter(vip->config->i2c_id); - if (!vip->adapter) { - ret = -ENODEV; - dev_err(&pdev->dev, "no I2C adapter found\n"); - goto vunreg; - } - - vip->decoder = v4l2_i2c_new_subdev(&vip->v4l2_dev, vip->adapter, - "adv7180", vip->config->i2c_addr, - NULL); - if (!vip->decoder) { - ret = -ENODEV; - dev_err(&pdev->dev, "no decoder found\n"); - goto vunreg; - } - - i2c_put_adapter(vip->adapter); - - v4l2_subdev_call(vip->decoder, core, init, 0); - - pr_info("STA2X11 Video Input Port (VIP) loaded\n"); - return 0; - -vunreg: - video_set_drvdata(vip->video_dev, NULL); -vrelease: - if (video_is_registered(vip->video_dev)) - video_unregister_device(vip->video_dev); - else - video_device_release(vip->video_dev); -release_irq: - free_irq(pdev->irq, vip); - pci_disable_msi(pdev); -unmap: - pci_iounmap(pdev, vip->iomem); - mutex_destroy(&vip->mutex); -release: - pci_release_regions(pdev); -unreg: - v4l2_device_unregister(&vip->v4l2_dev); -free_mem: - kfree(vip); -release_gpios: - vip_gpio_release(&pdev->dev, config->reset_pin, config->reset_name); - vip_gpio_release(&pdev->dev, config->pwr_pin, config->pwr_name); -disable: - /* - * do not call pci_disable_device on sta2x11 because it break all - * other Bus masters on this EP - */ - return ret; -} - -/** - * sta2x11_vip_remove_one - release device - * @pdev: PCI device - * - * Undo everything done in .._init_one - * - * unregister video device - * free interrupt - * unmap ioadresses - * free memory - * free GPIO pins - */ -static void __devexit sta2x11_vip_remove_one(struct pci_dev *pdev) -{ - struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); - struct sta2x11_vip *vip = - container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); - - video_set_drvdata(vip->video_dev, NULL); - video_unregister_device(vip->video_dev); - /*do not call video_device_release() here, is already done */ - free_irq(pdev->irq, vip); - pci_disable_msi(pdev); - pci_iounmap(pdev, vip->iomem); - pci_release_regions(pdev); - - v4l2_device_unregister(&vip->v4l2_dev); - mutex_destroy(&vip->mutex); - - vip_gpio_release(&pdev->dev, vip->config->pwr_pin, - vip->config->pwr_name); - vip_gpio_release(&pdev->dev, vip->config->reset_pin, - vip->config->reset_name); - - kfree(vip); - /* - * do not call pci_disable_device on sta2x11 because it break all - * other Bus masters on this EP - */ -} - -#ifdef CONFIG_PM - -/** - * sta2x11_vip_suspend - set device into power save mode - * @pdev: PCI device - * @state: new state of device - * - * all relevant registers are saved and an attempt to set a new state is made. - * - * return value: 0 always indicate success, - * even if device could not be disabled. (workaround for hardware problem) - * - * reurn value : 0, always succesful, even if hardware does not not support - * power down mode. - */ -static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); - struct sta2x11_vip *vip = - container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); - unsigned long flags; - int i; - - spin_lock_irqsave(&vip->slock, flags); - vip->register_save_area[0] = REG_READ(vip, DVP_CTL); - REG_WRITE(vip, DVP_CTL, vip->register_save_area[0] & DVP_CTL_DIS); - vip->register_save_area[SAVE_COUNT] = REG_READ(vip, DVP_ITM); - REG_WRITE(vip, DVP_ITM, 0); - for (i = 1; i < SAVE_COUNT; i++) - vip->register_save_area[i] = REG_READ(vip, 4 * i); - for (i = 0; i < AUX_COUNT; i++) - vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i] = - REG_READ(vip, registers_to_save[i]); - spin_unlock_irqrestore(&vip->slock, flags); - /* save pci state */ - pci_save_state(pdev); - if (pci_set_power_state(pdev, pci_choose_state(pdev, state))) { - /* - * do not call pci_disable_device on sta2x11 because it - * break all other Bus masters on this EP - */ - vip->disabled = 1; - } - - pr_info("VIP: suspend\n"); - return 0; -} - -/** - * sta2x11_vip_resume - resume device operation - * @pdev : PCI device - * - * re-enable device, set PCI state to powered and restore registers. - * resume normal device operation afterwards. - * - * return value: 0, no error. - * - * other, could not set device to power on state. - */ -static int sta2x11_vip_resume(struct pci_dev *pdev) -{ - struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); - struct sta2x11_vip *vip = - container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); - unsigned long flags; - int ret, i; - - pr_info("VIP: resume\n"); - /* restore pci state */ - if (vip->disabled) { - ret = pci_enable_device(pdev); - if (ret) { - pr_warning("VIP: Can't enable device.\n"); - return ret; - } - vip->disabled = 0; - } - ret = pci_set_power_state(pdev, PCI_D0); - if (ret) { - /* - * do not call pci_disable_device on sta2x11 because it - * break all other Bus masters on this EP - */ - pr_warning("VIP: Can't enable device.\n"); - vip->disabled = 1; - return ret; - } - - pci_restore_state(pdev); - - spin_lock_irqsave(&vip->slock, flags); - for (i = 1; i < SAVE_COUNT; i++) - REG_WRITE(vip, 4 * i, vip->register_save_area[i]); - for (i = 0; i < AUX_COUNT; i++) - REG_WRITE(vip, registers_to_save[i], - vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i]); - REG_WRITE(vip, DVP_CTL, vip->register_save_area[0]); - REG_WRITE(vip, DVP_ITM, vip->register_save_area[SAVE_COUNT]); - spin_unlock_irqrestore(&vip->slock, flags); - return 0; -} - -#endif - -static DEFINE_PCI_DEVICE_TABLE(sta2x11_vip_pci_tbl) = { - {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)}, - {0,} -}; - -static struct pci_driver sta2x11_vip_driver = { - .name = DRV_NAME, - .probe = sta2x11_vip_init_one, - .remove = __devexit_p(sta2x11_vip_remove_one), - .id_table = sta2x11_vip_pci_tbl, -#ifdef CONFIG_PM - .suspend = sta2x11_vip_suspend, - .resume = sta2x11_vip_resume, -#endif -}; - -static int __init sta2x11_vip_init_module(void) -{ - return pci_register_driver(&sta2x11_vip_driver); -} - -static void __exit sta2x11_vip_exit_module(void) -{ - pci_unregister_driver(&sta2x11_vip_driver); -} - -#ifdef MODULE -module_init(sta2x11_vip_init_module); -module_exit(sta2x11_vip_exit_module); -#else -late_initcall_sync(sta2x11_vip_init_module); -#endif - -MODULE_DESCRIPTION("STA2X11 Video Input Port driver"); -MODULE_AUTHOR("Wind River"); -MODULE_LICENSE("GPL v2"); -MODULE_SUPPORTED_DEVICE("sta2x11 video input"); -MODULE_VERSION(DRV_VERSION); -MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl); |