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path: root/drivers/media/video/w9968cf.c
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Diffstat (limited to 'drivers/media/video/w9968cf.c')
-rw-r--r--drivers/media/video/w9968cf.c134
1 files changed, 43 insertions, 91 deletions
diff --git a/drivers/media/video/w9968cf.c b/drivers/media/video/w9968cf.c
index 105a832531f2..f59b2bd07e89 100644
--- a/drivers/media/video/w9968cf.c
+++ b/drivers/media/video/w9968cf.c
@@ -42,6 +42,7 @@
#include <asm/page.h>
#include <asm/uaccess.h>
#include <linux/page-flags.h>
+#include <linux/videodev.h>
#include <media/v4l2-ioctl.h>
#include "w9968cf.h"
@@ -68,7 +69,6 @@ MODULE_VERSION(W9968CF_MODULE_VERSION);
MODULE_LICENSE(W9968CF_MODULE_LICENSE);
MODULE_SUPPORTED_DEVICE("Video");
-static int ovmod_load = W9968CF_OVMOD_LOAD;
static unsigned short simcams = W9968CF_SIMCAMS;
static short video_nr[]={[0 ... W9968CF_MAX_DEVICES-1] = -1}; /*-1=first free*/
static unsigned int packet_size[] = {[0 ... W9968CF_MAX_DEVICES-1] =
@@ -111,9 +111,6 @@ static int specific_debug = W9968CF_SPECIFIC_DEBUG;
static unsigned int param_nv[24]; /* number of values per parameter */
-#ifdef CONFIG_MODULES
-module_param(ovmod_load, bool, 0644);
-#endif
module_param(simcams, ushort, 0644);
module_param_array(video_nr, short, &param_nv[0], 0444);
module_param_array(packet_size, uint, &param_nv[1], 0444);
@@ -144,18 +141,6 @@ module_param(debug, ushort, 0644);
module_param(specific_debug, bool, 0644);
#endif
-#ifdef CONFIG_MODULES
-MODULE_PARM_DESC(ovmod_load,
- "\n<0|1> Automatic 'ovcamchip' module loading."
- "\n0 disabled, 1 enabled."
- "\nIf enabled,'insmod' searches for the required 'ovcamchip'"
- "\nmodule in the system, according to its configuration, and"
- "\nattempts to load that module automatically. This action is"
- "\nperformed once as soon as the 'w9968cf' module is loaded"
- "\ninto memory."
- "\nDefault value is "__MODULE_STRING(W9968CF_OVMOD_LOAD)"."
- "\n");
-#endif
MODULE_PARM_DESC(simcams,
"\n<n> Number of cameras allowed to stream simultaneously."
"\nn may vary from 0 to "
@@ -443,8 +428,6 @@ static int w9968cf_i2c_smbus_xfer(struct i2c_adapter*, u16 addr,
unsigned short flags, char read_write,
u8 command, int size, union i2c_smbus_data*);
static u32 w9968cf_i2c_func(struct i2c_adapter*);
-static int w9968cf_i2c_attach_inform(struct i2c_client*);
-static int w9968cf_i2c_detach_inform(struct i2c_client*);
/* Memory management */
static void* rvmalloc(unsigned long size);
@@ -1443,19 +1426,11 @@ w9968cf_i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
unsigned short flags, char read_write, u8 command,
int size, union i2c_smbus_data *data)
{
- struct w9968cf_device* cam = i2c_get_adapdata(adapter);
+ struct v4l2_device *v4l2_dev = i2c_get_adapdata(adapter);
+ struct w9968cf_device *cam = to_cam(v4l2_dev);
u8 i;
int err = 0;
- switch (addr) {
- case OV6xx0_SID:
- case OV7xx0_SID:
- break;
- default:
- DBG(4, "Rejected slave ID 0x%04X", addr)
- return -EINVAL;
- }
-
if (size == I2C_SMBUS_BYTE) {
/* Why addr <<= 1? See OVXXX0_SID defines in ovcamchip.h */
addr <<= 1;
@@ -1463,8 +1438,17 @@ w9968cf_i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
if (read_write == I2C_SMBUS_WRITE)
err = w9968cf_i2c_adap_write_byte(cam, addr, command);
else if (read_write == I2C_SMBUS_READ)
- err = w9968cf_i2c_adap_read_byte(cam,addr,&data->byte);
-
+ for (i = 1; i <= W9968CF_I2C_RW_RETRIES; i++) {
+ err = w9968cf_i2c_adap_read_byte(cam, addr,
+ &data->byte);
+ if (err) {
+ if (w9968cf_smbus_refresh_bus(cam)) {
+ err = -EIO;
+ break;
+ }
+ } else
+ break;
+ }
} else if (size == I2C_SMBUS_BYTE_DATA) {
addr <<= 1;
@@ -1491,7 +1475,6 @@ w9968cf_i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
DBG(4, "Unsupported I2C transfer mode (%d)", size)
return -EINVAL;
}
-
return err;
}
@@ -1504,44 +1487,6 @@ static u32 w9968cf_i2c_func(struct i2c_adapter* adap)
}
-static int w9968cf_i2c_attach_inform(struct i2c_client* client)
-{
- struct w9968cf_device* cam = i2c_get_adapdata(client->adapter);
- int id = client->driver->id, err = 0;
-
- if (id == I2C_DRIVERID_OVCAMCHIP) {
- cam->sensor_client = client;
- err = w9968cf_sensor_init(cam);
- if (err) {
- cam->sensor_client = NULL;
- return err;
- }
- } else {
- DBG(4, "Rejected client [%s] with driver [%s]",
- client->name, client->driver->driver.name)
- return -EINVAL;
- }
-
- DBG(5, "I2C attach client [%s] with driver [%s]",
- client->name, client->driver->driver.name)
-
- return 0;
-}
-
-
-static int w9968cf_i2c_detach_inform(struct i2c_client* client)
-{
- struct w9968cf_device* cam = i2c_get_adapdata(client->adapter);
-
- if (cam->sensor_client == client)
- cam->sensor_client = NULL;
-
- DBG(5, "I2C detach client [%s]", client->name)
-
- return 0;
-}
-
-
static int w9968cf_i2c_init(struct w9968cf_device* cam)
{
int err = 0;
@@ -1554,15 +1499,13 @@ static int w9968cf_i2c_init(struct w9968cf_device* cam)
static struct i2c_adapter adap = {
.id = I2C_HW_SMBUS_W9968CF,
.owner = THIS_MODULE,
- .client_register = w9968cf_i2c_attach_inform,
- .client_unregister = w9968cf_i2c_detach_inform,
.algo = &algo,
};
memcpy(&cam->i2c_adapter, &adap, sizeof(struct i2c_adapter));
strcpy(cam->i2c_adapter.name, "w9968cf");
cam->i2c_adapter.dev.parent = &cam->usbdev->dev;
- i2c_set_adapdata(&cam->i2c_adapter, cam);
+ i2c_set_adapdata(&cam->i2c_adapter, &cam->v4l2_dev);
DBG(6, "Registering I2C adapter with kernel...")
@@ -2165,13 +2108,9 @@ w9968cf_sensor_get_control(struct w9968cf_device* cam, int cid, int* val)
static int
w9968cf_sensor_cmd(struct w9968cf_device* cam, unsigned int cmd, void* arg)
{
- struct i2c_client* c = cam->sensor_client;
- int rc = 0;
-
- if (!c || !c->driver || !c->driver->command)
- return -EINVAL;
+ int rc;
- rc = c->driver->command(c, cmd, arg);
+ rc = v4l2_subdev_call(cam->sensor_sd, core, ioctl, cmd, arg);
/* The I2C driver returns -EPERM on non-supported controls */
return (rc < 0 && rc != -EPERM) ? rc : 0;
}
@@ -2346,7 +2285,7 @@ static int w9968cf_sensor_init(struct w9968cf_device* cam)
goto error;
/* NOTE: Make sure width and height are a multiple of 16 */
- switch (cam->sensor_client->addr) {
+ switch (v4l2_i2c_subdev_addr(cam->sensor_sd)) {
case OV6xx0_SID:
cam->maxwidth = 352;
cam->maxheight = 288;
@@ -2651,6 +2590,7 @@ static void w9968cf_release_resources(struct w9968cf_device* cam)
w9968cf_deallocate_memory(cam);
kfree(cam->control_buffer);
kfree(cam->data_buffer);
+ v4l2_device_unregister(&cam->v4l2_dev);
mutex_unlock(&w9968cf_devlist_mutex);
}
@@ -3480,6 +3420,11 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
struct list_head* ptr;
u8 sc = 0; /* number of simultaneous cameras */
static unsigned short dev_nr; /* 0 - we are handling device number n */
+ static unsigned short addrs[] = {
+ OV7xx0_SID,
+ OV6xx0_SID,
+ I2C_CLIENT_END
+ };
if (le16_to_cpu(udev->descriptor.idVendor) == winbond_id_table[0].idVendor &&
le16_to_cpu(udev->descriptor.idProduct) == winbond_id_table[0].idProduct)
@@ -3495,12 +3440,14 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
if (!cam)
return -ENOMEM;
+ err = v4l2_device_register(&intf->dev, &cam->v4l2_dev);
+ if (err)
+ goto fail0;
+
mutex_init(&cam->dev_mutex);
mutex_lock(&cam->dev_mutex);
cam->usbdev = udev;
- /* NOTE: a local copy is used to avoid possible race conditions */
- memcpy(&cam->dev, &udev->dev, sizeof(struct device));
DBG(2, "%s detected", symbolic(camlist, mod_id))
@@ -3549,7 +3496,7 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
cam->v4ldev->minor = video_nr[dev_nr];
cam->v4ldev->release = video_device_release;
video_set_drvdata(cam->v4ldev, cam);
- cam->v4ldev->parent = &cam->dev;
+ cam->v4ldev->v4l2_dev = &cam->v4l2_dev;
err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
video_nr[dev_nr]);
@@ -3576,9 +3523,14 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
w9968cf_turn_on_led(cam);
w9968cf_i2c_init(cam);
+ cam->sensor_sd = v4l2_i2c_new_probed_subdev(&cam->v4l2_dev,
+ &cam->i2c_adapter,
+ "ovcamchip", "ovcamchip", addrs);
usb_set_intfdata(intf, cam);
mutex_unlock(&cam->dev_mutex);
+
+ err = w9968cf_sensor_init(cam);
return 0;
fail: /* Free unused memory */
@@ -3587,6 +3539,8 @@ fail: /* Free unused memory */
if (cam->v4ldev)
video_device_release(cam->v4ldev);
mutex_unlock(&cam->dev_mutex);
+ v4l2_device_unregister(&cam->v4l2_dev);
+fail0:
kfree(cam);
return err;
}
@@ -3597,15 +3551,16 @@ static void w9968cf_usb_disconnect(struct usb_interface* intf)
struct w9968cf_device* cam =
(struct w9968cf_device*)usb_get_intfdata(intf);
- down_write(&w9968cf_disconnect);
-
if (cam) {
+ down_write(&w9968cf_disconnect);
/* Prevent concurrent accesses to data */
mutex_lock(&cam->dev_mutex);
cam->disconnected = 1;
- DBG(2, "Disconnecting %s...", symbolic(camlist, cam->id))
+ DBG(2, "Disconnecting %s...", symbolic(camlist, cam->id));
+
+ v4l2_device_disconnect(&cam->v4l2_dev);
wake_up_interruptible_all(&cam->open);
@@ -3621,12 +3576,12 @@ static void w9968cf_usb_disconnect(struct usb_interface* intf)
w9968cf_release_resources(cam);
mutex_unlock(&cam->dev_mutex);
+ up_write(&w9968cf_disconnect);
- if (!cam->users)
+ if (!cam->users) {
kfree(cam);
+ }
}
-
- up_write(&w9968cf_disconnect);
}
@@ -3650,9 +3605,6 @@ static int __init w9968cf_module_init(void)
KDBG(2, W9968CF_MODULE_NAME" "W9968CF_MODULE_VERSION)
KDBG(3, W9968CF_MODULE_AUTHOR)
- if (ovmod_load)
- request_module("ovcamchip");
-
if ((err = usb_register(&w9968cf_usb_driver)))
return err;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.