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Message-Id: <1347544368-30583-4-git-send-email-federico.vaga@gmail.com>
Date: Thu, 13 Sep 2012 15:52:48 +0200
From: Federico Vaga <federico.vaga@...il.com>
To: Mauro Carvalho Chehab <mchehab@...radead.org>,
Pawel Osciak <pawel@...iak.com>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Hans Verkuil <hans.verkuil@...co.com>
Cc: Giancarlo Asnaghi <giancarlo.asnaghi@...com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
Jonathan Corbet <corbet@....net>,
Federico Vaga <federico.vaga@...il.com>
Subject: [PATCH 4/4] sta2x11_vip: convert to videobuf2 and control framework
Signed-off-by: Federico Vaga <federico.vaga@...il.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@...com>
---
drivers/media/pci/sta2x11/Kconfig | 2 +-
drivers/media/pci/sta2x11/sta2x11_vip.c | 1235 ++++++++++---------------------
2 file modificati, 411 inserzioni(+), 826 rimozioni(-)
diff --git a/drivers/media/pci/sta2x11/Kconfig b/drivers/media/pci/sta2x11/Kconfig
index 6749f67..654339f 100644
--- a/drivers/media/pci/sta2x11/Kconfig
+++ b/drivers/media/pci/sta2x11/Kconfig
@@ -2,7 +2,7 @@ config STA2X11_VIP
tristate "STA2X11 VIP Video For Linux"
depends on STA2X11
select VIDEO_ADV7180 if MEDIA_SUBDRV_AUTOSELECT
- select VIDEOBUF_DMA_CONTIG
+ select VIDEOBUF2_DMA_STREAMING
depends on PCI && VIDEO_V4L2 && VIRT_TO_BUS
help
Say Y for support for STA2X11 VIP (Video Input Port) capture
diff --git a/drivers/media/pci/sta2x11/sta2x11_vip.c b/drivers/media/pci/sta2x11/sta2x11_vip.c
index 4c10205..93d56da 100644
--- a/drivers/media/pci/sta2x11/sta2x11_vip.c
+++ b/drivers/media/pci/sta2x11/sta2x11_vip.c
@@ -1,6 +1,7 @@
/*
* This is the driver for the STA2x11 Video Input Port.
*
+ * Copyright (C) 2012 ST Microelectronics
* Copyright (C) 2010 WindRiver Systems, Inc.
*
* This program is free software; you can redistribute it and/or modify it
@@ -19,36 +20,30 @@
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
- * Author: Andreas Kies <andreas.kies@...driver.com>
- * Vlad Lungu <vlad.lungu@...driver.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-ctrls.h>
#include <media/v4l2-ioctl.h>
-#include <media/videobuf-dma-contig.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-dma-streaming.h>
#include "sta2x11_vip.h"
-#define DRV_NAME "sta2x11_vip"
#define DRV_VERSION "1.3"
#ifndef PCI_DEVICE_ID_STMICRO_VIP
@@ -63,8 +58,8 @@
#define DVP_TFS 0x08
#define DVP_BFO 0x0C
#define DVP_BFS 0x10
-#define DVP_VTP 0x14
-#define DVP_VBP 0x18
+#define DVP_VTP 0x14
+#define DVP_VBP 0x18
#define DVP_VMP 0x1C
#define DVP_ITM 0x98
#define DVP_ITS 0x9C
@@ -84,44 +79,24 @@
#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 vip_buffer {
+ struct vb2_buffer vb;
+ struct list_head list;
+ dma_addr_t dma;
+};
+static inline struct vip_buffer *to_vip_buffer(struct vb2_buffer *vb2)
+{
+ return container_of(vb2, struct vip_buffer, vb);
+}
+
+struct sta2x11_vip_fh {
+ struct v4l2_fh fh;
+};
struct sta2x11_vip {
struct v4l2_device v4l2_dev;
struct video_device *video_dev;
@@ -129,21 +104,27 @@ struct sta2x11_vip {
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;
+ struct v4l2_ctrl_handler ctrl_hdl;
+
+
+ struct v4l2_pix_format format; /* pixel format, fixed UYVY */
+ v4l2_std_id std; /* Video standard (PAL/NTSC)*/
+ unsigned int input; /* Input line (0 or 1) */
+ int disabled; /* 1 disabled 0 enabled */
+ spinlock_t slock; /* spin lock for hardware */
+
+ struct vb2_alloc_ctx *alloc_ctx;
+ struct vb2_queue vb_vidq; /* queue maintaned by videobuf2 */
+ struct list_head buffer_list; /* list of buffers */
+ unsigned int sequence;
+ struct vip_buffer *active; /* current active buffer */
+ spinlock_t lock; /* Used in videobuf2 callback */
+
+ /* Interrupt counters */
+ int tcount, bcount;
int overflow;
- void *mem_spare;
- dma_addr_t dma_spare;
- void *iomem;
+
+ void *iomem; /* I/O Memory */
struct vip_config *config;
};
@@ -206,360 +187,217 @@ static struct v4l2_pix_format formats_60[] = {
.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)
+/* Write VIP register */
+static inline void reg_write(struct sta2x11_vip *vip, unsigned int reg, u32 val)
{
- 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)
+ iowrite32((val), (vip->iomem)+(reg));
+}
+/* Read VIP register */
+static inline u32 reg_read(struct sta2x11_vip *vip, unsigned int reg)
{
- 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;
+ return ioread32((vip->iomem)+(reg));
}
-
-/**
- * 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)
+/* Start DMA acquisition */
+static void start_dma(struct sta2x11_vip *vip, struct vip_buffer *vip_buf)
{
- struct sta2x11_vip *vip = vq->priv_data;
- u32 dma;
+ unsigned long offset = 0;
- vb->state = VIDEOBUF_QUEUED;
+ if (vip->format.field == V4L2_FIELD_INTERLACED)
+ offset = vip->format.width * 2;
- if (vip->active) {
- list_add_tail(&vb->queue, &vip->capture);
+ spin_lock_irq(&vip->slock);
+ /* Enable acquisition */
+ reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) | DVP_CTL_ENA);
+ /* Set Top and Bottom Field memory address */
+ reg_write(vip, DVP_VTP, (u32)vip_buf->dma);
+ reg_write(vip, DVP_VBP, (u32)vip_buf->dma + offset);
+ spin_unlock_irq(&vip->slock);
+}
+
+/* Fetch the next buffer to activate */
+static void vip_active_buf_next(struct sta2x11_vip *vip)
+{
+ /* Get the next buffer */
+ spin_lock(&vip->lock);
+ if (list_empty(&vip->buffer_list)) {/* No available buffer */
+ spin_unlock(&vip->lock);
return;
}
-
- vip->started = 1;
+ vip->active = list_first_entry(&vip->buffer_list,
+ struct vip_buffer,
+ list);
+ /* Reset Top and Bottom counter */
vip->tcount = 0;
vip->bcount = 0;
- vip->active = vb;
- vb->state = VIDEOBUF_ACTIVE;
+ spin_unlock(&vip->lock);
+ if (vb2_is_streaming(&vip->vb_vidq)) { /* streaming is on */
+ start_dma(vip, vip->active); /* start dma capture */
+ }
+}
- 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));
+/* Videobuf2 Operations */
+static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
- 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;
+ if (!(*nbuffers) || *nbuffers < MAX_FRAMES)
+ *nbuffers = MAX_FRAMES;
- default:
- pr_warning("VIP: unknown field format\n");
- return;
- }
+ *nplanes = 1;
+ sizes[0] = vip->format.sizeimage;
+ alloc_ctxs[0] = vip->alloc_ctx;
- REG_WRITE(vip, DVP_CTL, DVP_CTL_ENA);
-}
+ vip->sequence = 0;
+ vip->active = NULL;
+ vip->tcount = 0;
+ vip->bcount = 0;
-/**
- * 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)
+ return 0;
+};
+static int buffer_init(struct vb2_buffer *vb)
{
+ struct vip_buffer *vip_buf = to_vip_buffer(vb);
- videobuf_dma_contig_free(vq, vb);
- vb->state = VIDEOBUF_NEEDS_INIT;
+ vip_buf->dma = (dma_addr_t)vb2_plane_cookie(vb, 0);
+ INIT_LIST_HEAD(&vip_buf->list);
+ return 0;
}
-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)
+static int buffer_prepare(struct vb2_buffer *vb)
{
- struct video_device *dev = video_devdata(file);
- struct sta2x11_vip *vip = video_get_drvdata(dev);
+ struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
+ struct vip_buffer *vip_buf = to_vip_buffer(vb);
+ unsigned long size;
+
+ size = vip->format.sizeimage;
+ if (vb2_plane_size(vb, 0) < size) {
+ v4l2_err(&vip->v4l2_dev, "buffer too small (%lu < %lu)\n",
+ vb2_plane_size(vb, 0), size);
+ return -EINVAL;
+ }
- mutex_lock(&vip->mutex);
- vip->users++;
+ vb2_set_plane_payload(&vip_buf->vb, 0, size);
- if (vip->users > 1) {
- vip->users--;
- mutex_unlock(&vip->mutex);
- return -EBUSY;
+ return 0;
+}
+static void buffer_queue(struct vb2_buffer *vb)
+{
+ struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
+ struct vip_buffer *vip_buf = to_vip_buffer(vb);
+ unsigned long size;
+
+ size = vip->format.sizeimage;
+ spin_lock(&vip->lock);
+ list_add_tail(&vip_buf->list, &vip->buffer_list);
+ if (!vip->active) { /* No active buffer, active the first one */
+ vip->active = list_first_entry(&vip->buffer_list,
+ struct vip_buffer,
+ list);
+ if (vb2_is_streaming(&vip->vb_vidq)) /* streaming is on */
+ start_dma(vip, vip_buf); /* start dma capture */
}
+ spin_unlock(&vip->lock);
+}
+static int buffer_finish(struct vb2_buffer *vb)
+{
+ struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
+ struct vip_buffer *vip_buf = to_vip_buffer(vb);
+ unsigned long size;
- file->private_data = dev;
- vip->overflow = 0;
- vip->started = 0;
- vip->closing = 0;
- vip->active = NULL;
+ /* Buffer handled, remove it from the list */
+ spin_lock(&vip->lock);
+ list_del_init(&vip_buf->list);
+ spin_unlock(&vip->lock);
+ /* DMA sync */
+ size = vip->format.sizeimage;
- 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;
- }
+ vip_active_buf_next(vip);
- 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)
+static int start_streaming(struct vb2_queue *vq, unsigned int count)
{
- struct video_device *dev = video_devdata(file);
- struct sta2x11_vip *vip = video_get_drvdata(dev);
+ struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
- 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;
-
+ /* Enable interrupt VSYNC Top and Bottom*/
+ reg_write(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST);
spin_unlock_irq(&vip->slock);
- videobuf_stop(&vip->vb_vidq);
- videobuf_mmap_free(&vip->vb_vidq);
+ if (count)
+ start_dma(vip, vip->active);
- 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)
+/* abort streaming and wait for last buffer */
+static int stop_streaming(struct vb2_queue *vq)
{
- 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);
+ struct sta2x11_vip *vip = vb2_get_drv_priv(vq);
+ struct vip_buffer *vip_buf, *node;
+
+ /* Disable acquisition */
+ reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
+ /* Disable all interrupts */
+ reg_write(vip, DVP_ITM, 0);
+
+ /* Release all active buffers */
+ spin_lock(&vip->lock);
+ list_for_each_entry_safe(vip_buf, node, &vip->buffer_list, list) {
+ vb2_buffer_done(&vip_buf->vb, VB2_BUF_STATE_ERROR);
+ list_del(&vip_buf->list);
+ }
+ spin_unlock(&vip->lock);
+ return 0;
}
-/**
- * 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);
+static struct vb2_ops vip_video_qops = {
+ .queue_setup = queue_setup,
+ .buf_init = buffer_init,
+ .buf_prepare = buffer_prepare,
+ .buf_finish = buffer_finish,
+ .buf_queue = buffer_queue,
+ .start_streaming = start_streaming,
+ .stop_streaming = stop_streaming,
+};
- 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);
+/* File Operations */
+static const struct v4l2_file_operations vip_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .unlocked_ioctl = video_ioctl2,
+ .read = vb2_fop_read,
+ .mmap = vb2_fop_mmap,
+ .poll = vb2_fop_poll
+};
- 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.
- */
+/* V4L2 ioctl Operations */
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);
+ struct sta2x11_vip *vip = video_drvdata(file);
- memset(cap, 0, sizeof(struct v4l2_capability));
- strcpy(cap->driver, DRV_NAME);
- strcpy(cap->card, DRV_NAME);
- cap->version = 0;
+ strcpy(cap->driver, KBUILD_MODNAME);
+ strcpy(cap->card, KBUILD_MODNAME);
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;
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
+ V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
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);
+ struct sta2x11_vip *vip = video_drvdata(file);
v4l2_std_id oldstd = vip->std, newstd;
int status;
@@ -590,110 +428,22 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *std)
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);
+ struct sta2x11_vip *vip = video_drvdata(file);
*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);
+ struct sta2x11_vip *vip = video_drvdata(file);
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)
{
@@ -707,22 +457,9 @@ static int vidioc_enum_input(struct file *file, void *priv,
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);
+ struct sta2x11_vip *vip = video_drvdata(file);
int ret;
if (i > 1)
@@ -735,36 +472,14 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int 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);
+ struct sta2x11_vip *vip = video_drvdata(file);
*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)
{
@@ -778,32 +493,12 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
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);
+ struct sta2x11_vip *vip = video_drvdata(file);
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
@@ -827,6 +522,8 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
return -EINVAL;
}
+ /* It is the only supported format */
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
f->fmt.pix.height &= ~1;
if (2 * interlace_lim < f->fmt.pix.height)
f->fmt.pix.height = 2 * interlace_lim;
@@ -840,304 +537,222 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
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);
+ struct sta2x11_vip *vip = video_drvdata(file);
+ unsigned int t_stop, b_stop, pitch;
int ret;
ret = vidioc_try_fmt_vid_cap(file, priv, f);
if (ret)
return ret;
+ if (vb2_is_busy(&vip->vb_vidq)) {
+ /* Can't change format during acquisition */
+ v4l2_err(&vip->v4l2_dev, "device busy\n");
+ return -EBUSY;
+ }
+
memcpy(&vip->format, &f->fmt.pix, sizeof(struct v4l2_pix_format));
+ switch (vip->format.field) {
+ case V4L2_FIELD_INTERLACED:
+ t_stop = ((vip->format.height / 2 - 1) << 16) |
+ (2 * vip->format.width - 1);
+ b_stop = t_stop;
+ pitch = 4 * vip->format.width;
+ break;
+ case V4L2_FIELD_TOP:
+ t_stop = ((vip->format.height - 1) << 16) |
+ (2 * vip->format.width - 1);
+ b_stop = (0 << 16) | (2 * vip->format.width - 1);
+ pitch = 2 * vip->format.width;
+ break;
+ case V4L2_FIELD_BOTTOM:
+ t_stop = (0 << 16) | (2 * vip->format.width - 1);
+ b_stop = (vip->format.height << 16) |
+ (2 * vip->format.width - 1);
+ pitch = 2 * vip->format.width;
+ break;
+ default:
+ v4l2_err(&vip->v4l2_dev, "unknown field format\n");
+ return -EINVAL;
+ }
+
+ spin_lock_irq(&vip->slock);
+ /* Y-X Top Field Offset */
+ reg_write(vip, DVP_TFO, 0);
+ /* Y-X Bottom Field Offset */
+ reg_write(vip, DVP_BFO, 0);
+ /* Y-X Top Field Stop*/
+ reg_write(vip, DVP_TFS, t_stop);
+ /* Y-X Bottom Field Stop */
+ reg_write(vip, DVP_BFS, b_stop);
+ /* Video Memory Pitch */
+ reg_write(vip, DVP_VMP, pitch);
+ spin_unlock_irq(&vip->slock);
+
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);
+ struct sta2x11_vip *vip = video_drvdata(file);
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,
+ /* FMT handling */
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+ /* Buffer handlers */
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ /* Stream on/off */
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+ /* Standard handling */
.vidioc_g_std = vidioc_g_std,
+ .vidioc_s_std = vidioc_s_std,
.vidioc_querystd = vidioc_querystd,
- .vidioc_queryctrl = vidioc_queryctrl,
- .vidioc_g_ctrl = vidioc_g_ctrl,
- .vidioc_s_ctrl = vidioc_s_ctrl,
+ /* Input handling */
.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,
+ .vidioc_s_input = vidioc_s_input,
+ /* Log status ioctl */
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ /* Event handling */
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device video_dev_template = {
- .name = DRV_NAME,
+ .name = KBUILD_MODNAME,
.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;
+ unsigned int status;
- status = REG_READ(vip, DVP_ITS);
+ status = reg_read(vip, DVP_ITS);
- if (!status) {
- pr_debug("VIP: irq ignored\n");
+ if (!status) /* No interrupt to handle */
return IRQ_NONE;
- }
- if (!vip->started)
- return IRQ_HANDLED;
-
- if (status & DVP_IT_VSB)
- vip->bcount++;
-
- if (status & DVP_IT_VST)
- vip->tcount++;
+ if (status & DVP_IT_FIFO)
+ if (vip->overflow++ > 5)
+ pr_info("VIP: fifo overflow\n");
- if ((DVP_IT_VSB | DVP_IT_VST) == (status & (DVP_IT_VST | DVP_IT_VSB))) {
+ if ((status & DVP_IT_VST) && (status & 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)
+ if (status & DVP_IT_VST)
+ if ((++vip->tcount) < 2)
+ return IRQ_HANDLED;
+ if (status & DVP_IT_VSB) {
+ vip->bcount++;
return IRQ_HANDLED;
+ }
- if (status & DVP_IT_VSB)
- return IRQ_HANDLED;
+ if (vip->active) { /* Acquisition is over on this buffer */
+ /* Disable acquisition */
+ reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA);
+ /* Remove the active buffer from the list */
+ do_gettimeofday(&vip->active->vb.v4l2_buf.timestamp);
+ vip->active->vb.v4l2_buf.sequence = vip->sequence++;
+ vb2_buffer_done(&vip->active->vb, VB2_BUF_STATE_DONE);
+ }
- spin_lock_irqsave(&vip->slock, flags);
+ return IRQ_HANDLED;
+}
- 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;
+static void sta2x11_vip_init_register(struct sta2x11_vip *vip)
+{
+ /* Register initialization */
+ spin_lock_irq(&vip->slock);
+ /* Clean interrupt */
+ reg_read(vip, DVP_ITS);
+ /* Enable Half Line per vertical */
+ reg_write(vip, DVP_HLFLN, DVP_HLFLN_SD);
+ /* Reset VIP control */
+ reg_write(vip, DVP_CTL, DVP_CTL_RST);
+ /* Clear VIP control */
+ reg_write(vip, DVP_CTL, 0);
+ spin_unlock_irq(&vip->slock);
+}
+static void sta2x11_vip_clear_register(struct sta2x11_vip *vip)
+{
+ spin_lock_irq(&vip->slock);
+ /* Disable interrupt */
+ reg_write(vip, DVP_ITM, 0);
+ /* Reset VIP Control */
+ reg_write(vip, DVP_CTL, DVP_CTL_RST);
+ /* Clear VIP Control */
+ reg_write(vip, DVP_CTL, 0);
+ /* Clean VIP Interrupt */
+ reg_read(vip, DVP_ITS);
+ spin_unlock_irq(&vip->slock);
+}
+static int sta2x11_vip_init_buffer(struct sta2x11_vip *vip)
+{
+ memset(&vip->vb_vidq, 0, sizeof(struct vb2_queue));
+ vip->vb_vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ vip->vb_vidq.io_modes = VB2_MMAP | VB2_READ;
+ vip->vb_vidq.drv_priv = vip;
+ vip->vb_vidq.buf_struct_size = sizeof(struct vip_buffer);
+ vip->vb_vidq.ops = &vip_video_qops;
+ vip->vb_vidq.mem_ops = &vb2_dma_streaming_memops;
+ vb2_queue_init(&vip->vb_vidq);
+ INIT_LIST_HEAD(&vip->buffer_list);
+ spin_lock_init(&vip->lock);
+
+ vip->alloc_ctx = vb2_dma_streaming_init_ctx(&vip->pdev->dev);
+ if (IS_ERR(vip->alloc_ctx)) {
+ v4l2_err(&vip->v4l2_dev, "Can't allocate buffer context");
+ return PTR_ERR(vip->alloc_ctx);
}
- 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);
+ return 0;
+}
+static void sta2x11_vip_release_buffer(struct sta2x11_vip *vip)
+{
+ vb2_dma_streaming_cleanup_ctx(vip->alloc_ctx);
+}
+static int sta2x11_vip_init_controls(struct sta2x11_vip *vip)
+{
+ /*
+ * Inititialize an empty control so VIP can inerithing controls
+ * from ADV7180
+ */
+ v4l2_ctrl_handler_init(&vip->ctrl_hdl, 0);
+
+ vip->v4l2_dev.ctrl_handler = &vip->ctrl_hdl;
+ if (vip->ctrl_hdl.error) {
+ int err = vip->ctrl_hdl.error;
+
+ v4l2_ctrl_handler_free(&vip->ctrl_hdl);
+ return err;
}
-done:
- spin_unlock_irqrestore(&vip->slock, flags);
- return IRQ_HANDLED;
+
+ return 0;
}
-/**
- * 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)
{
@@ -1170,13 +785,6 @@ static int vip_gpio_reserve(struct device *dev, int pin, int dir,
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) {
@@ -1186,25 +794,6 @@ static void vip_gpio_release(struct device *dev, int pin, const char *name)
}
}
-/**
- * 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)
{
@@ -1212,10 +801,17 @@ static int __devinit sta2x11_vip_init_one(struct pci_dev *pdev,
struct sta2x11_vip *vip;
struct vip_config *config;
+ /* Check if hardware support 26-bit DMA */
+ if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(26))) {
+ dev_err(&pdev->dev, "26-bit DMA addressing not available\n");
+ return -EINVAL;
+ }
+ /* Enable PCI */
ret = pci_enable_device(pdev);
if (ret)
return ret;
+ /* Get VIP platform data */
config = dev_get_platdata(&pdev->dev);
if (!config) {
dev_info(&pdev->dev, "VIP slot disabled\n");
@@ -1223,6 +819,7 @@ static int __devinit sta2x11_vip_init_one(struct pci_dev *pdev,
goto disable;
}
+ /* Power configuration */
ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0,
config->pwr_name);
if (ret)
@@ -1237,7 +834,6 @@ static int __devinit sta2x11_vip_init_one(struct pci_dev *pdev,
goto disable;
}
}
-
if (config->pwr_pin != -1) {
/* Datasheet says 5ms between PWR and RST */
usleep_range(5000, 25000);
@@ -1251,17 +847,20 @@ static int __devinit sta2x11_vip_init_one(struct pci_dev *pdev,
}
usleep_range(5000, 25000);
+ /* Allocate a new VIP instance */
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;
+ ret = sta2x11_vip_init_controls(vip);
+ if (ret)
+ goto free_mem;
if (v4l2_device_register(&pdev->dev, &vip->v4l2_dev))
goto free_mem;
@@ -1271,46 +870,52 @@ static int __devinit sta2x11_vip_init_one(struct pci_dev *pdev,
pci_set_master(pdev);
- ret = pci_request_regions(pdev, DRV_NAME);
+ ret = pci_request_regions(pdev, KBUILD_MODNAME);
if (ret)
goto unreg;
vip->iomem = pci_iomap(pdev, 0, 0x100);
if (!vip->iomem) {
- ret = -ENOMEM; /* FIXME */
+ ret = -ENOMEM;
goto release;
}
pci_enable_msi(pdev);
- INIT_LIST_HEAD(&vip->capture);
+ /* Initialize buffer */
+ ret = sta2x11_vip_init_buffer(vip);
+ if (ret)
+ goto unmap;
+
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);
+ IRQF_SHARED, KBUILD_MODNAME, vip);
if (ret) {
dev_err(&pdev->dev, "request_irq failed\n");
ret = -ENODEV;
- goto unmap;
+ goto release_buf;
}
+ /* Alloc, initialize and register video device */
vip->video_dev = video_device_alloc();
if (!vip->video_dev) {
ret = -ENOMEM;
goto release_irq;
}
- *(vip->video_dev) = video_dev_template;
+ vip->video_dev = &video_dev_template;
+ vip->video_dev->v4l2_dev = &vip->v4l2_dev;
+ vip->video_dev->queue = &vip->vb_vidq;
+ set_bit(V4L2_FL_USE_FH_PRIO, &vip->video_dev->flags);
video_set_drvdata(vip->video_dev, vip);
ret = video_register_device(vip->video_dev, VFL_TYPE_GRABBER, -1);
if (ret)
goto vrelease;
+ /* Get ADV7180 subdevice */
vip->adapter = i2c_get_adapter(vip->config->i2c_id);
if (!vip->adapter) {
ret = -ENODEV;
@@ -1328,10 +933,11 @@ static int __devinit sta2x11_vip_init_one(struct pci_dev *pdev,
}
i2c_put_adapter(vip->adapter);
-
v4l2_subdev_call(vip->decoder, core, init, 0);
- pr_info("STA2X11 Video Input Port (VIP) loaded\n");
+ sta2x11_vip_init_register(vip);
+
+ dev_info(&pdev->dev, "STA2X11 Video Input Port (VIP) loaded\n");
return 0;
vunreg:
@@ -1343,10 +949,12 @@ vrelease:
video_device_release(vip->video_dev);
release_irq:
free_irq(pdev->irq, vip);
+release_buf:
+ sta2x11_vip_release_buffer(vip);
pci_disable_msi(pdev);
unmap:
+ vb2_queue_release(&vip->vb_vidq);
pci_iounmap(pdev, vip->iomem);
- mutex_destroy(&vip->mutex);
release:
pci_release_regions(pdev);
unreg:
@@ -1364,34 +972,24 @@ disable:
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);
+ sta2x11_vip_clear_register(vip);
+
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);
+ vb2_queue_release(&vip->vb_vidq);
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);
@@ -1407,18 +1005,12 @@ static void __devexit sta2x11_vip_remove_one(struct pci_dev *pdev)
#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)
{
@@ -1429,15 +1021,15 @@ static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state)
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);
+ 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);
+ 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]);
+ reg_read(vip, registers_to_save[i]);
spin_unlock_irqrestore(&vip->slock, flags);
/* save pci state */
pci_save_state(pdev);
@@ -1453,16 +1045,9 @@ static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state)
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)
{
@@ -1497,12 +1082,12 @@ static int sta2x11_vip_resume(struct pci_dev *pdev)
spin_lock_irqsave(&vip->slock, flags);
for (i = 1; i < SAVE_COUNT; i++)
- REG_WRITE(vip, 4 * i, vip->register_save_area[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],
+ 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]);
+ 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;
}
@@ -1515,7 +1100,7 @@ static DEFINE_PCI_DEVICE_TABLE(sta2x11_vip_pci_tbl) = {
};
static struct pci_driver sta2x11_vip_driver = {
- .name = DRV_NAME,
+ .name = KBUILD_MODNAME,
.probe = sta2x11_vip_init_one,
.remove = __devexit_p(sta2x11_vip_remove_one),
.id_table = sta2x11_vip_pci_tbl,
@@ -1543,7 +1128,7 @@ late_initcall_sync(sta2x11_vip_init_module);
#endif
MODULE_DESCRIPTION("STA2X11 Video Input Port driver");
-MODULE_AUTHOR("Wind River");
+MODULE_AUTHOR("Federico Vaga <federico.vaga@...il.com>");
MODULE_LICENSE("GPL v2");
MODULE_SUPPORTED_DEVICE("sta2x11 video input");
MODULE_VERSION(DRV_VERSION);
--
1.7.11.4
--
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