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V4L/DVB (11114): cafe_ccic: convert to v4l2_device.

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Convert this driver to v4l2_device and removed the unnecessary cafe_dev_list.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-03-18 13:13:09 -03:00 committed by Mauro Carvalho Chehab
parent 14386c2b77
commit 21508b902b
1 changed files with 54 additions and 104 deletions
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158
drivers/media/video/cafe_ccic.c
View file

@ -25,7 +25,7 @@
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-chip-ident.h>
#include <linux/device.h>
@ -136,6 +136,7 @@ struct cafe_sio_buffer {
*/
struct cafe_camera
{
struct v4l2_device v4l2_dev;
enum cafe_state state;
unsigned long flags; /* Buffer status, mainly (dev_lock) */
int users; /* How many open FDs */
@ -145,7 +146,7 @@ struct cafe_camera
* Subsystem structures.
*/
struct pci_dev *pdev;
struct video_device v4ldev;
struct video_device vdev;
struct i2c_adapter i2c_adapter;
struct i2c_client *sensor;
@ -196,6 +197,11 @@ struct cafe_camera
#define CF_CONFIG_NEEDED 4 /* Must configure hardware */
static inline struct cafe_camera *to_cam(struct v4l2_device *dev)
{
return container_of(dev, struct cafe_camera, v4l2_dev);
}
/*
* Start over with DMA buffers - dev_lock needed.
@ -238,59 +244,7 @@ static void cafe_set_config_needed(struct cafe_camera *cam, int needed)
/* ---------------------------------------------------------------------*/
/*
* We keep a simple list of known devices to search at open time.
*/
static LIST_HEAD(cafe_dev_list);
static DEFINE_MUTEX(cafe_dev_list_lock);
static void cafe_add_dev(struct cafe_camera *cam)
{
mutex_lock(&cafe_dev_list_lock);
list_add_tail(&cam->dev_list, &cafe_dev_list);
mutex_unlock(&cafe_dev_list_lock);
}
static void cafe_remove_dev(struct cafe_camera *cam)
{
mutex_lock(&cafe_dev_list_lock);
list_del(&cam->dev_list);
mutex_unlock(&cafe_dev_list_lock);
}
static struct cafe_camera *cafe_find_dev(int minor)
{
struct cafe_camera *cam;
mutex_lock(&cafe_dev_list_lock);
list_for_each_entry(cam, &cafe_dev_list, dev_list) {
if (cam->v4ldev.minor == minor)
goto done;
}
cam = NULL;
done:
mutex_unlock(&cafe_dev_list_lock);
return cam;
}
static struct cafe_camera *cafe_find_by_pdev(struct pci_dev *pdev)
{
struct cafe_camera *cam;
mutex_lock(&cafe_dev_list_lock);
list_for_each_entry(cam, &cafe_dev_list, dev_list) {
if (cam->pdev == pdev)
goto done;
}
cam = NULL;
done:
mutex_unlock(&cafe_dev_list_lock);
return cam;
}
/* ------------------------------------------------------------------------ */
/*
* Device register I/O
*/
@ -481,7 +435,8 @@ static int cafe_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
unsigned short flags, char rw, u8 command,
int size, union i2c_smbus_data *data)
{
struct cafe_camera *cam = i2c_get_adapdata(adapter);
struct v4l2_device *v4l2_dev = i2c_get_adapdata(adapter);
struct cafe_camera *cam = to_cam(v4l2_dev);
int ret = -EINVAL;
/*
@ -536,7 +491,8 @@ static void cafe_ctlr_power_down(struct cafe_camera *cam);
static int cafe_smbus_attach(struct i2c_client *client)
{
struct cafe_camera *cam = i2c_get_adapdata(client->adapter);
struct v4l2_device *v4l2_dev = i2c_get_adapdata(client->adapter);
struct cafe_camera *cam = to_cam(v4l2_dev);
/*
* Don't talk to chips we don't recognize.
@ -550,7 +506,8 @@ static int cafe_smbus_attach(struct i2c_client *client)
static int cafe_smbus_detach(struct i2c_client *client)
{
struct cafe_camera *cam = i2c_get_adapdata(client->adapter);
struct v4l2_device *v4l2_dev = i2c_get_adapdata(client->adapter);
struct cafe_camera *cam = to_cam(v4l2_dev);
if (cam->sensor == client) {
cafe_ctlr_stop_dma(cam);
@ -575,7 +532,7 @@ static int cafe_smbus_setup(struct cafe_camera *cam)
adap->algo = &cafe_smbus_algo;
strcpy(adap->name, "cafe_ccic");
adap->dev.parent = &cam->pdev->dev;
i2c_set_adapdata(adap, cam);
i2c_set_adapdata(adap, &cam->v4l2_dev);
ret = i2c_add_adapter(adap);
if (ret)
printk(KERN_ERR "Unable to register cafe i2c adapter\n");
@ -809,9 +766,9 @@ static void cafe_ctlr_power_up(struct cafe_camera *cam)
* Control 1 is power down, set to 0 to operate.
*/
cafe_reg_write(cam, REG_GPR, GPR_C1EN|GPR_C0EN); /* pwr up, reset */
// mdelay(1); /* Marvell says 1ms will do it */
/* mdelay(1); */ /* Marvell says 1ms will do it */
cafe_reg_write(cam, REG_GPR, GPR_C1EN|GPR_C0EN|GPR_C0);
// mdelay(1); /* Enough? */
/* mdelay(1); */ /* Enough? */
spin_unlock_irqrestore(&cam->dev_lock, flags);
msleep(5); /* Just to be sure */
}
@ -874,7 +831,7 @@ static int cafe_cam_init(struct cafe_camera *cam)
if (ret)
goto out;
cam->sensor_type = chip.ident;
// if (cam->sensor->addr != OV7xx0_SID) {
/* if (cam->sensor->addr != OV7xx0_SID) { */
if (cam->sensor_type != V4L2_IDENT_OV7670) {
cam_err(cam, "Unsupported sensor type %d", cam->sensor->addr);
ret = -EINVAL;
@ -1474,11 +1431,8 @@ static int cafe_v4l_mmap(struct file *filp, struct vm_area_struct *vma)
static int cafe_v4l_open(struct file *filp)
{
struct cafe_camera *cam;
struct cafe_camera *cam = video_drvdata(filp);
cam = cafe_find_dev(video_devdata(filp)->minor);
if (cam == NULL)
return -ENODEV;
filp->private_data = cam;
mutex_lock(&cam->s_mutex);
@ -1532,7 +1486,7 @@ static unsigned int cafe_v4l_poll(struct file *filp,
static int cafe_vidioc_queryctrl(struct file *filp, void *priv,
struct v4l2_queryctrl *qc)
{
struct cafe_camera *cam = filp->private_data;
struct cafe_camera *cam = priv;
int ret;
mutex_lock(&cam->s_mutex);
@ -1545,7 +1499,7 @@ static int cafe_vidioc_queryctrl(struct file *filp, void *priv,
static int cafe_vidioc_g_ctrl(struct file *filp, void *priv,
struct v4l2_control *ctrl)
{
struct cafe_camera *cam = filp->private_data;
struct cafe_camera *cam = priv;
int ret;
mutex_lock(&cam->s_mutex);
@ -1558,7 +1512,7 @@ static int cafe_vidioc_g_ctrl(struct file *filp, void *priv,
static int cafe_vidioc_s_ctrl(struct file *filp, void *priv,
struct v4l2_control *ctrl)
{
struct cafe_camera *cam = filp->private_data;
struct cafe_camera *cam = priv;
int ret;
mutex_lock(&cam->s_mutex);
@ -1745,15 +1699,6 @@ static int cafe_vidioc_s_parm(struct file *filp, void *priv,
return ret;
}
static void cafe_v4l_dev_release(struct video_device *vd)
{
struct cafe_camera *cam = container_of(vd, struct cafe_camera, v4ldev);
kfree(cam);
}
/*
* This template device holds all of those v4l2 methods; we
* clone it for specific real devices.
@ -1800,15 +1745,10 @@ static struct video_device cafe_v4l_template = {
.fops = &cafe_v4l_fops,
.ioctl_ops = &cafe_v4l_ioctl_ops,
.release = cafe_v4l_dev_release,
.release = video_device_release_empty,
};
/* ---------------------------------------------------------------------- */
/*
* Interrupt handler stuff
@ -2054,10 +1994,10 @@ static void cafe_dfs_cam_setup(struct cafe_camera *cam)
if (!cafe_dfs_root)
return;
sprintf(fname, "regs-%d", cam->v4ldev.num);
sprintf(fname, "regs-%d", cam->vdev.num);
cam->dfs_regs = debugfs_create_file(fname, 0444, cafe_dfs_root,
cam, &cafe_dfs_reg_ops);
sprintf(fname, "cam-%d", cam->v4ldev.num);
sprintf(fname, "cam-%d", cam->vdev.num);
cam->dfs_cam_regs = debugfs_create_file(fname, 0444, cafe_dfs_root,
cam, &cafe_dfs_cam_ops);
}
@ -2100,6 +2040,10 @@ static int cafe_pci_probe(struct pci_dev *pdev,
cam = kzalloc(sizeof(struct cafe_camera), GFP_KERNEL);
if (cam == NULL)
goto out;
ret = v4l2_device_register(&pdev->dev, &cam->v4l2_dev);
if (ret)
goto out_free;
mutex_init(&cam->s_mutex);
mutex_lock(&cam->s_mutex);
spin_lock_init(&cam->dev_lock);
@ -2118,14 +2062,14 @@ static int cafe_pci_probe(struct pci_dev *pdev,
*/
ret = pci_enable_device(pdev);
if (ret)
goto out_free;
goto out_unreg;
pci_set_master(pdev);
ret = -EIO;
cam->regs = pci_iomap(pdev, 0, 0);
if (! cam->regs) {
printk(KERN_ERR "Unable to ioremap cafe-ccic regs\n");
goto out_free;
goto out_unreg;
}
ret = request_irq(pdev->irq, cafe_irq, IRQF_SHARED, "cafe-ccic", cam);
if (ret)
@ -2149,13 +2093,15 @@ static int cafe_pci_probe(struct pci_dev *pdev,
* Get the v4l2 setup done.
*/
mutex_lock(&cam->s_mutex);
cam->v4ldev = cafe_v4l_template;
cam->v4ldev.debug = 0;
// cam->v4ldev.debug = V4L2_DEBUG_IOCTL_ARG;
cam->v4ldev.parent = &pdev->dev;
ret = video_register_device(&cam->v4ldev, VFL_TYPE_GRABBER, -1);
cam->vdev = cafe_v4l_template;
cam->vdev.debug = 0;
/* cam->vdev.debug = V4L2_DEBUG_IOCTL_ARG;*/
cam->vdev.v4l2_dev = &cam->v4l2_dev;
ret = video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1);
if (ret)
goto out_smbus;
video_set_drvdata(&cam->vdev, cam);
/*
* If so requested, try to get our DMA buffers now.
*/
@ -2167,19 +2113,20 @@ static int cafe_pci_probe(struct pci_dev *pdev,
cafe_dfs_cam_setup(cam);
mutex_unlock(&cam->s_mutex);
cafe_add_dev(cam);
return 0;
out_smbus:
out_smbus:
cafe_smbus_shutdown(cam);
out_freeirq:
out_freeirq:
cafe_ctlr_power_down(cam);
free_irq(pdev->irq, cam);
out_iounmap:
out_iounmap:
pci_iounmap(pdev, cam->regs);
out_free:
out_free:
v4l2_device_unregister(&cam->v4l2_dev);
out_unreg:
kfree(cam);
out:
out:
return ret;
}
@ -2194,21 +2141,20 @@ static void cafe_shutdown(struct cafe_camera *cam)
if (cam->n_sbufs > 0)
/* What if they are still mapped? Shouldn't be, but... */
cafe_free_sio_buffers(cam);
cafe_remove_dev(cam);
cafe_ctlr_stop_dma(cam);
cafe_ctlr_power_down(cam);
cafe_smbus_shutdown(cam);
cafe_free_dma_bufs(cam);
free_irq(cam->pdev->irq, cam);
pci_iounmap(cam->pdev, cam->regs);
video_unregister_device(&cam->v4ldev);
/* kfree(cam); done in v4l_release () */
video_unregister_device(&cam->vdev);
}
static void cafe_pci_remove(struct pci_dev *pdev)
{
struct cafe_camera *cam = cafe_find_by_pdev(pdev);
struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
struct cafe_camera *cam = to_cam(v4l2_dev);
if (cam == NULL) {
printk(KERN_WARNING "pci_remove on unknown pdev %p\n", pdev);
@ -2218,6 +2164,8 @@ static void cafe_pci_remove(struct pci_dev *pdev)
if (cam->users > 0)
cam_warn(cam, "Removing a device with users!\n");
cafe_shutdown(cam);
v4l2_device_unregister(&cam->v4l2_dev);
kfree(cam);
/* No unlock - it no longer exists */
}
@ -2228,7 +2176,8 @@ static void cafe_pci_remove(struct pci_dev *pdev)
*/
static int cafe_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct cafe_camera *cam = cafe_find_by_pdev(pdev);
struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
struct cafe_camera *cam = to_cam(v4l2_dev);
int ret;
enum cafe_state cstate;
@ -2246,7 +2195,8 @@ static int cafe_pci_suspend(struct pci_dev *pdev, pm_message_t state)
static int cafe_pci_resume(struct pci_dev *pdev)
{
struct cafe_camera *cam = cafe_find_by_pdev(pdev);
struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
struct cafe_camera *cam = to_cam(v4l2_dev);
int ret = 0;
ret = pci_restore_state(pdev);