diff options
Diffstat (limited to 'drivers/media/video/bt856.c')
| -rw-r--r-- | drivers/media/video/bt856.c | 218 |
1 files changed, 49 insertions, 169 deletions
diff --git a/drivers/media/video/bt856.c b/drivers/media/video/bt856.c index ab2ce4d7b5de..4213867507f8 100644 --- a/drivers/media/video/bt856.c +++ b/drivers/media/video/bt856.c @@ -29,43 +29,24 @@ */ #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/signal.h> #include <linux/types.h> -#include <linux/i2c.h> -#include <linux/video_encoder.h> -#include <asm/io.h> -#include <asm/pgtable.h> -#include <asm/page.h> +#include <linux/ioctl.h> #include <asm/uaccess.h> - +#include <linux/i2c.h> +#include <linux/i2c-id.h> #include <linux/videodev.h> +#include <linux/video_encoder.h> +#include <media/v4l2-common.h> +#include <media/v4l2-i2c-drv-legacy.h> MODULE_DESCRIPTION("Brooktree-856A video encoder driver"); MODULE_AUTHOR("Mike Bernson & Dave Perks"); MODULE_LICENSE("GPL"); - -#define I2C_NAME(s) (s)->name - - 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 BT856_REG_OFFSET 0xDA @@ -78,14 +59,9 @@ struct bt856 { int enable; }; -#define I2C_BT856 0x88 - /* ----------------------------------------------------------------------- */ -static inline int -bt856_write (struct i2c_client *client, - u8 reg, - u8 value) +static inline int bt856_write(struct i2c_client *client, u8 reg, u8 value) { struct bt856 *encoder = i2c_get_clientdata(client); @@ -93,46 +69,36 @@ bt856_write (struct i2c_client *client, 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 i2c_client *client, u8 reg, u8 bit, u8 value) { struct bt856 *encoder = i2c_get_clientdata(client); return bt856_write(client, reg, - (encoder-> - reg[reg - BT856_REG_OFFSET] & ~(1 << bit)) | - (value ? (1 << bit) : 0)); + (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 i2c_client *client) { int i; struct bt856 *encoder = i2c_get_clientdata(client); - printk(KERN_INFO "%s: register dump:", I2C_NAME(client)); + v4l_info(client, "register dump:\n"); for (i = 0; i < BT856_NR_REG; i += 2) - printk(" %02x", encoder->reg[i]); - printk("\n"); + 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_command(struct i2c_client *client, unsigned cmd, void *arg) { struct bt856 *encoder = i2c_get_clientdata(client); switch (cmd) { - case 0: /* This is just for testing!!! */ - dprintk(1, KERN_INFO "bt856: init\n"); + v4l_dbg(1, debug, client, "init\n"); bt856_write(client, 0xdc, 0x18); bt856_write(client, 0xda, 0); bt856_write(client, 0xde, 0); @@ -142,7 +108,6 @@ bt856_command (struct i2c_client *client, bt856_setbit(client, 0xdc, 4, 1); switch (encoder->norm) { - case VIDEO_MODE_NTSC: bt856_setbit(client, 0xdc, 2, 0); break; @@ -163,26 +128,23 @@ bt856_command (struct i2c_client *client, { struct video_encoder_capability *cap = arg; - dprintk(1, KERN_INFO "%s: get capabilities\n", - I2C_NAME(client)); + v4l_dbg(1, debug, client, "get capabilities\n"); cap->flags = VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC | VIDEO_ENCODER_CCIR; cap->inputs = 2; cap->outputs = 1; - } break; + } case ENCODER_SET_NORM: { int *iarg = arg; - dprintk(1, KERN_INFO "%s: set norm %d\n", I2C_NAME(client), - *iarg); + v4l_dbg(1, debug, client, "set norm %d\n", *iarg); switch (*iarg) { - case VIDEO_MODE_NTSC: bt856_setbit(client, 0xdc, 2, 0); break; @@ -195,27 +157,23 @@ bt856_command (struct i2c_client *client, default: return -EINVAL; - } encoder->norm = *iarg; if (debug != 0) bt856_dump(client); - } break; + } case ENCODER_SET_INPUT: { int *iarg = arg; - dprintk(1, KERN_INFO "%s: set input %d\n", I2C_NAME(client), - *iarg); + v4l_dbg(1, debug, client, "set input %d\n", *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); @@ -234,27 +192,24 @@ bt856_command (struct i2c_client *client, break; default: return -EINVAL; - } if (debug != 0) bt856_dump(client); - } break; + } case ENCODER_SET_OUTPUT: { int *iarg = arg; - dprintk(1, KERN_INFO "%s: set output %d\n", I2C_NAME(client), - *iarg); + v4l_dbg(1, debug, client, "set output %d\n", *iarg); /* not much choice of outputs */ - if (*iarg != 0) { + if (*iarg != 0) return -EINVAL; - } - } break; + } case ENCODER_ENABLE_OUTPUT: { @@ -262,10 +217,9 @@ bt856_command (struct i2c_client *client, encoder->enable = !!*iarg; - dprintk(1, KERN_INFO "%s: enable output %d\n", - I2C_NAME(client), encoder->enable); - } + v4l_dbg(1, debug, client, "enable output %d\n", encoder->enable); break; + } default: return -EINVAL; @@ -276,64 +230,29 @@ bt856_command (struct i2c_client *client, /* ----------------------------------------------------------------------- */ -/* - * 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 unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END }; -static struct i2c_driver i2c_driver_bt856; +I2C_CLIENT_INSMOD; -static int -bt856_detect_client (struct i2c_adapter *adapter, - int address, - int kind) +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); - /* Check if the adapter supports the needed features */ - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return 0; + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; - client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); - if (!client) - return -ENOMEM; - client->addr = address; - client->adapter = adapter; - client->driver = &i2c_driver_bt856; - strlcpy(I2C_NAME(client), "bt856", sizeof(I2C_NAME(client))); + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL); - if (encoder == NULL) { - kfree(client); + if (encoder == NULL) return -ENOMEM; - } 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; - } - bt856_write(client, 0xdc, 0x18); bt856_write(client, 0xda, 0); bt856_write(client, 0xde, 0); @@ -359,65 +278,26 @@ bt856_detect_client (struct i2c_adapter *adapter, if (debug != 0) bt856_dump(client); - - dprintk(1, KERN_INFO "%s_attach: at address 0x%x\n", I2C_NAME(client), - client->addr << 1); - 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); - + kfree(i2c_get_clientdata(client)); return 0; } -/* ----------------------------------------------------------------------- */ - -static struct i2c_driver i2c_driver_bt856 = { - .driver = { - .name = "bt856", - }, - - .id = I2C_DRIVERID_BT856, +static const struct i2c_device_id bt856_id[] = { + { "bt856", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bt856_id); - .attach_adapter = bt856_attach_adapter, - .detach_client = bt856_detach_client, +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "bt856", + .driverid = I2C_DRIVERID_BT856, .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); |