-/*
+/*
* bt856 - BT856A Digital Video Encoder (Rockwell Part)
*
* Copyright (C) 1999 Mike Bernson <mike@mlb.org>
*/
#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/pci.h>
-#include <linux/signal.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <linux/sched.h>
-#include <asm/segment.h>
#include <linux/types.h>
-
-#include <linux/videodev.h>
+#include <linux/ioctl.h>
#include <asm/uaccess.h>
+#include <linux/i2c.h>
+#include <linux/i2c-id.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv.h>
MODULE_DESCRIPTION("Brooktree-856A video encoder driver");
MODULE_AUTHOR("Mike Bernson & Dave Perks");
MODULE_LICENSE("GPL");
-#include <linux/i2c.h>
-#include <linux/i2c-dev.h>
-
-#define I2C_NAME(s) (s)->name
-
-#include <linux/video_encoder.h>
-
-static int debug = 0;
+static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
-#define dprintk(num, format, args...) \
- do { \
- if (debug >= num) \
- printk(format, ##args); \
- } while (0)
/* ----------------------------------------------------------------------- */
-#define REG_OFFSET 0xCE
+#define BT856_REG_OFFSET 0xDA
+#define BT856_NR_REG 6
struct bt856 {
- unsigned char reg[32];
-
- int norm;
- int enable;
- int bright;
- int contrast;
- int hue;
- int sat;
+ struct v4l2_subdev sd;
+ unsigned char reg[BT856_NR_REG];
+
+ v4l2_std_id norm;
};
-#define I2C_BT856 0x88
+static inline struct bt856 *to_bt856(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct bt856, sd);
+}
/* ----------------------------------------------------------------------- */
-static inline int
-bt856_write (struct i2c_client *client,
- u8 reg,
- u8 value)
+static inline int bt856_write(struct bt856 *encoder, u8 reg, u8 value)
{
- struct bt856 *encoder = i2c_get_clientdata(client);
+ struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd);
- encoder->reg[reg - REG_OFFSET] = value;
+ encoder->reg[reg - BT856_REG_OFFSET] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
-static inline int
-bt856_setbit (struct i2c_client *client,
- u8 reg,
- u8 bit,
- u8 value)
+static inline int bt856_setbit(struct bt856 *encoder, u8 reg, u8 bit, u8 value)
{
- struct bt856 *encoder = i2c_get_clientdata(client);
-
- return bt856_write(client, reg,
- (encoder->
- reg[reg - REG_OFFSET] & ~(1 << bit)) |
- (value ? (1 << bit) : 0));
+ return bt856_write(encoder, reg,
+ (encoder->reg[reg - BT856_REG_OFFSET] & ~(1 << bit)) |
+ (value ? (1 << bit) : 0));
}
-static void
-bt856_dump (struct i2c_client *client)
+static void bt856_dump(struct bt856 *encoder)
{
int i;
- struct bt856 *encoder = i2c_get_clientdata(client);
- printk(KERN_INFO "%s: register dump:", I2C_NAME(client));
- for (i = 0xd6; i <= 0xde; i += 2)
- printk(" %02x", encoder->reg[i - REG_OFFSET]);
- printk("\n");
+ v4l2_info(&encoder->sd, "register dump:\n");
+ for (i = 0; i < BT856_NR_REG; i += 2)
+ printk(KERN_CONT " %02x", encoder->reg[i]);
+ printk(KERN_CONT "\n");
}
/* ----------------------------------------------------------------------- */
-static int
-bt856_command (struct i2c_client *client,
- unsigned int cmd,
- void *arg)
+static int bt856_init(struct v4l2_subdev *sd, u32 arg)
{
- struct bt856 *encoder = i2c_get_clientdata(client);
-
- switch (cmd) {
-
- case 0:
- /* This is just for testing!!! */
- dprintk(1, KERN_INFO "bt856: init\n");
- bt856_write(client, 0xdc, 0x18);
- bt856_write(client, 0xda, 0);
- bt856_write(client, 0xde, 0);
-
- bt856_setbit(client, 0xdc, 3, 1);
- //bt856_setbit(client, 0xdc, 6, 0);
- bt856_setbit(client, 0xdc, 4, 1);
-
- switch (encoder->norm) {
-
- case VIDEO_MODE_NTSC:
- bt856_setbit(client, 0xdc, 2, 0);
- break;
-
- case VIDEO_MODE_PAL:
- bt856_setbit(client, 0xdc, 2, 1);
- break;
- }
-
- bt856_setbit(client, 0xdc, 1, 1);
- bt856_setbit(client, 0xde, 4, 0);
- bt856_setbit(client, 0xde, 3, 1);
- if (debug != 0)
- bt856_dump(client);
- break;
+ struct bt856 *encoder = to_bt856(sd);
+
+ /* This is just for testing!!! */
+ v4l2_dbg(1, debug, sd, "init\n");
+ bt856_write(encoder, 0xdc, 0x18);
+ bt856_write(encoder, 0xda, 0);
+ bt856_write(encoder, 0xde, 0);
+
+ bt856_setbit(encoder, 0xdc, 3, 1);
+ /*bt856_setbit(encoder, 0xdc, 6, 0);*/
+ bt856_setbit(encoder, 0xdc, 4, 1);
+
+ if (encoder->norm & V4L2_STD_NTSC)
+ bt856_setbit(encoder, 0xdc, 2, 0);
+ else
+ bt856_setbit(encoder, 0xdc, 2, 1);
+
+ bt856_setbit(encoder, 0xdc, 1, 1);
+ bt856_setbit(encoder, 0xde, 4, 0);
+ bt856_setbit(encoder, 0xde, 3, 1);
+ if (debug != 0)
+ bt856_dump(encoder);
+ return 0;
+}
- case ENCODER_GET_CAPABILITIES:
- {
- struct video_encoder_capability *cap = arg;
+static int bt856_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+ struct bt856 *encoder = to_bt856(sd);
- dprintk(1, KERN_INFO "%s: get capabilities\n",
- I2C_NAME(client));
+ v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
- cap->flags = VIDEO_ENCODER_PAL |
- VIDEO_ENCODER_NTSC |
- VIDEO_ENCODER_CCIR;
- cap->inputs = 2;
- cap->outputs = 1;
+ if (std & V4L2_STD_NTSC) {
+ bt856_setbit(encoder, 0xdc, 2, 0);
+ } else if (std & V4L2_STD_PAL) {
+ bt856_setbit(encoder, 0xdc, 2, 1);
+ bt856_setbit(encoder, 0xda, 0, 0);
+ /*bt856_setbit(encoder, 0xda, 0, 1);*/
+ } else {
+ return -EINVAL;
}
- break;
-
- case ENCODER_SET_NORM:
- {
- int *iarg = arg;
-
- dprintk(1, KERN_INFO "%s: set norm %d\n", I2C_NAME(client),
- *iarg);
-
- switch (*iarg) {
-
- case VIDEO_MODE_NTSC:
- bt856_setbit(client, 0xdc, 2, 0);
- break;
-
- case VIDEO_MODE_PAL:
- bt856_setbit(client, 0xdc, 2, 1);
- bt856_setbit(client, 0xda, 0, 0);
- //bt856_setbit(client, 0xda, 0, 1);
- break;
+ encoder->norm = std;
+ if (debug != 0)
+ bt856_dump(encoder);
+ return 0;
+}
- default:
- return -EINVAL;
+static int bt856_s_routing(struct v4l2_subdev *sd,
+ u32 input, u32 output, u32 config)
+{
+ struct bt856 *encoder = to_bt856(sd);
- }
- encoder->norm = *iarg;
- if (debug != 0)
- bt856_dump(client);
- }
- break;
+ v4l2_dbg(1, debug, sd, "set input %d\n", input);
- case ENCODER_SET_INPUT:
- {
- int *iarg = arg;
-
- dprintk(1, KERN_INFO "%s: set input %d\n", I2C_NAME(client),
- *iarg);
-
- /* We only have video bus.
- * iarg = 0: input is from bt819
- * iarg = 1: input is from ZR36060 */
-
- switch (*iarg) {
-
- case 0:
- bt856_setbit(client, 0xde, 4, 0);
- bt856_setbit(client, 0xde, 3, 1);
- bt856_setbit(client, 0xdc, 3, 1);
- bt856_setbit(client, 0xdc, 6, 0);
- break;
- case 1:
- bt856_setbit(client, 0xde, 4, 0);
- bt856_setbit(client, 0xde, 3, 1);
- bt856_setbit(client, 0xdc, 3, 1);
- bt856_setbit(client, 0xdc, 6, 1);
- break;
- case 2: // Color bar
- bt856_setbit(client, 0xdc, 3, 0);
- bt856_setbit(client, 0xde, 4, 1);
- break;
- default:
- return -EINVAL;
-
- }
-
- if (debug != 0)
- bt856_dump(client);
- }
+ /* We only have video bus.
+ * input= 0: input is from bt819
+ * input= 1: input is from ZR36060 */
+ switch (input) {
+ case 0:
+ bt856_setbit(encoder, 0xde, 4, 0);
+ bt856_setbit(encoder, 0xde, 3, 1);
+ bt856_setbit(encoder, 0xdc, 3, 1);
+ bt856_setbit(encoder, 0xdc, 6, 0);
break;
-
- case ENCODER_SET_OUTPUT:
- {
- int *iarg = arg;
-
- dprintk(1, KERN_INFO "%s: set output %d\n", I2C_NAME(client),
- *iarg);
-
- /* not much choice of outputs */
- if (*iarg != 0) {
- return -EINVAL;
- }
- }
+ case 1:
+ bt856_setbit(encoder, 0xde, 4, 0);
+ bt856_setbit(encoder, 0xde, 3, 1);
+ bt856_setbit(encoder, 0xdc, 3, 1);
+ bt856_setbit(encoder, 0xdc, 6, 1);
break;
-
- case ENCODER_ENABLE_OUTPUT:
- {
- int *iarg = arg;
-
- encoder->enable = !!*iarg;
-
- dprintk(1, KERN_INFO "%s: enable output %d\n",
- I2C_NAME(client), encoder->enable);
- }
+ case 2: /* Color bar */
+ bt856_setbit(encoder, 0xdc, 3, 0);
+ bt856_setbit(encoder, 0xde, 4, 1);
break;
-
default:
return -EINVAL;
}
+ if (debug != 0)
+ bt856_dump(encoder);
return 0;
}
+static int bt856_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT856, 0);
+}
+
/* ----------------------------------------------------------------------- */
-/*
- * Generic i2c probe
- * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
- */
-static unsigned short normal_i2c[] = { I2C_BT856 >> 1, I2C_CLIENT_END };
-
-static unsigned short ignore = I2C_CLIENT_END;
-
-static struct i2c_client_address_data addr_data = {
- .normal_i2c = normal_i2c,
- .probe = &ignore,
- .ignore = &ignore,
+static const struct v4l2_subdev_core_ops bt856_core_ops = {
+ .g_chip_ident = bt856_g_chip_ident,
+ .init = bt856_init,
};
-static struct i2c_driver i2c_driver_bt856;
+static const struct v4l2_subdev_video_ops bt856_video_ops = {
+ .s_std_output = bt856_s_std_output,
+ .s_routing = bt856_s_routing,
+};
-static int
-bt856_detect_client (struct i2c_adapter *adapter,
- int address,
- int kind)
+static const struct v4l2_subdev_ops bt856_ops = {
+ .core = &bt856_core_ops,
+ .video = &bt856_video_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static int bt856_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
- int i;
- struct i2c_client *client;
struct bt856 *encoder;
-
- dprintk(1,
- KERN_INFO
- "bt856.c: detecting bt856 client on address 0x%x\n",
- address << 1);
+ struct v4l2_subdev *sd;
/* Check if the adapter supports the needed features */
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return 0;
-
- client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (client == 0)
- return -ENOMEM;
- memset(client, 0, sizeof(struct i2c_client));
- client->addr = address;
- client->adapter = adapter;
- client->driver = &i2c_driver_bt856;
- client->flags = I2C_CLIENT_ALLOW_USE;
- strlcpy(I2C_NAME(client), "bt856", sizeof(I2C_NAME(client)));
-
- encoder = kmalloc(sizeof(struct bt856), GFP_KERNEL);
- if (encoder == NULL) {
- kfree(client);
- return -ENOMEM;
- }
- memset(encoder, 0, sizeof(struct bt856));
- encoder->norm = VIDEO_MODE_NTSC;
- encoder->enable = 1;
- i2c_set_clientdata(client, encoder);
-
- i = i2c_attach_client(client);
- if (i) {
- kfree(client);
- kfree(encoder);
- return i;
- }
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
- bt856_write(client, 0xdc, 0x18);
- bt856_write(client, 0xda, 0);
- bt856_write(client, 0xde, 0);
+ v4l_info(client, "chip found @ 0x%x (%s)\n",
+ client->addr << 1, client->adapter->name);
- bt856_setbit(client, 0xdc, 3, 1);
- //bt856_setbit(client, 0xdc, 6, 0);
- bt856_setbit(client, 0xdc, 4, 1);
+ encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL);
+ if (encoder == NULL)
+ return -ENOMEM;
+ sd = &encoder->sd;
+ v4l2_i2c_subdev_init(sd, client, &bt856_ops);
+ encoder->norm = V4L2_STD_NTSC;
- switch (encoder->norm) {
+ bt856_write(encoder, 0xdc, 0x18);
+ bt856_write(encoder, 0xda, 0);
+ bt856_write(encoder, 0xde, 0);
- case VIDEO_MODE_NTSC:
- bt856_setbit(client, 0xdc, 2, 0);
- break;
+ bt856_setbit(encoder, 0xdc, 3, 1);
+ /*bt856_setbit(encoder, 0xdc, 6, 0);*/
+ bt856_setbit(encoder, 0xdc, 4, 1);
- case VIDEO_MODE_PAL:
- bt856_setbit(client, 0xdc, 2, 1);
- break;
- }
+ if (encoder->norm & V4L2_STD_NTSC)
+ bt856_setbit(encoder, 0xdc, 2, 0);
+ else
+ bt856_setbit(encoder, 0xdc, 2, 1);
- bt856_setbit(client, 0xdc, 1, 1);
- bt856_setbit(client, 0xde, 4, 0);
- bt856_setbit(client, 0xde, 3, 1);
+ bt856_setbit(encoder, 0xdc, 1, 1);
+ bt856_setbit(encoder, 0xde, 4, 0);
+ bt856_setbit(encoder, 0xde, 3, 1);
if (debug != 0)
- bt856_dump(client);
-
- dprintk(1, KERN_INFO "%s_attach: at address 0x%x\n", I2C_NAME(client),
- client->addr << 1);
-
+ bt856_dump(encoder);
return 0;
}
-static int
-bt856_attach_adapter (struct i2c_adapter *adapter)
+static int bt856_remove(struct i2c_client *client)
{
- dprintk(1,
- KERN_INFO
- "bt856.c: starting probe for adapter %s (0x%x)\n",
- I2C_NAME(adapter), adapter->id);
- return i2c_probe(adapter, &addr_data, &bt856_detect_client);
-}
-
-static int
-bt856_detach_client (struct i2c_client *client)
-{
- struct bt856 *encoder = i2c_get_clientdata(client);
- int err;
-
- err = i2c_detach_client(client);
- if (err) {
- return err;
- }
-
- kfree(encoder);
- kfree(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_bt856(sd));
return 0;
}
-/* ----------------------------------------------------------------------- */
+static const struct i2c_device_id bt856_id[] = {
+ { "bt856", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, bt856_id);
-static struct i2c_driver i2c_driver_bt856 = {
- .owner = THIS_MODULE,
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "bt856",
-
- .id = I2C_DRIVERID_BT856,
- .flags = I2C_DF_NOTIFY,
-
- .attach_adapter = bt856_attach_adapter,
- .detach_client = bt856_detach_client,
- .command = bt856_command,
+ .probe = bt856_probe,
+ .remove = bt856_remove,
+ .id_table = bt856_id,
};
-
-static int __init
-bt856_init (void)
-{
- return i2c_add_driver(&i2c_driver_bt856);
-}
-
-static void __exit
-bt856_exit (void)
-{
- i2c_del_driver(&i2c_driver_bt856);
-}
-
-module_init(bt856_init);
-module_exit(bt856_exit);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff