diff options
author | Hans Verkuil <hverkuil@xs4all.nl> | 2009-03-18 17:13:09 +0100 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 17:43:30 +0200 |
commit | 21508b902b314e0cd9c081a9141b138e96c9f441 (patch) | |
tree | f6ba4272148c629b3f69ac9a3cb56f4f09a97059 /drivers/media/video/cafe_ccic.c | |
parent | V4L/DVB (11113): ov7670: convert to v4l2_subdev (diff) | |
download | linux-21508b902b314e0cd9c081a9141b138e96c9f441.tar.xz linux-21508b902b314e0cd9c081a9141b138e96c9f441.zip |
V4L/DVB (11114): cafe_ccic: convert to v4l2_device.
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>
Diffstat (limited to 'drivers/media/video/cafe_ccic.c')
-rw-r--r-- | drivers/media/video/cafe_ccic.c | 158 |
1 files changed, 54 insertions, 104 deletions
diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c index 46fd573a4f15..600dde379efe 100644 --- a/drivers/media/video/cafe_ccic.c +++ b/drivers/media/video/cafe_ccic.c @@ -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); |