diff options
| -rw-r--r-- | drivers/media/video/bt819.c | 321 |
1 files changed, 92 insertions, 229 deletions
diff --git a/drivers/media/video/bt819.c b/drivers/media/video/bt819.c index ddd2a7964de..a07b7b88e5b 100644 --- a/drivers/media/video/bt819.c +++ b/drivers/media/video/bt819.c @@ -29,44 +29,25 @@ */ #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 <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_decoder.h> - +#include <media/v4l2-common.h> +#include <media/v4l2-i2c-drv-legacy.h> MODULE_DESCRIPTION("Brooktree-819 video decoder 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) - /* ----------------------------------------------------------------------- */ struct bt819 { @@ -97,14 +78,9 @@ static struct timing timing_data[] = { {858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000}, }; -#define I2C_BT819 0x8a - /* ----------------------------------------------------------------------- */ -static inline int -bt819_write (struct i2c_client *client, - u8 reg, - u8 value) +static inline int bt819_write(struct i2c_client *client, u8 reg, u8 value) { struct bt819 *decoder = i2c_get_clientdata(client); @@ -112,24 +88,15 @@ bt819_write (struct i2c_client *client, return i2c_smbus_write_byte_data(client, reg, value); } -static inline int -bt819_setbit (struct i2c_client *client, - u8 reg, - u8 bit, - u8 value) +static inline int bt819_setbit(struct i2c_client *client, u8 reg, u8 bit, u8 value) { struct bt819 *decoder = i2c_get_clientdata(client); return bt819_write(client, reg, - (decoder-> - reg[reg] & ~(1 << bit)) | - (value ? (1 << bit) : 0)); + (decoder->reg[reg] & ~(1 << bit)) | (value ? (1 << bit) : 0)); } -static int -bt819_write_block (struct i2c_client *client, - const u8 *data, - unsigned int len) +static int bt819_write_block(struct i2c_client *client, const u8 *data, unsigned int len) { int ret = -1; u8 reg; @@ -150,10 +117,9 @@ bt819_write_block (struct i2c_client *client, decoder->reg[reg++] = data[1]; len -= 2; data += 2; - } while (len >= 2 && data[0] == reg && - block_len < 32); - if ((ret = i2c_master_send(client, block_data, - block_len)) < 0) + } while (len >= 2 && data[0] == reg && block_len < 32); + ret = i2c_master_send(client, block_data, block_len); + if (ret < 0) break; } } else { @@ -169,20 +135,17 @@ bt819_write_block (struct i2c_client *client, return ret; } -static inline int -bt819_read (struct i2c_client *client, - u8 reg) +static inline int bt819_read(struct i2c_client *client, u8 reg) { return i2c_smbus_read_byte_data(client, reg); } -static int -bt819_init (struct i2c_client *client) +static int bt819_init(struct i2c_client *client) { struct bt819 *decoder = i2c_get_clientdata(client); static unsigned char init[] = { - //0x1f, 0x00, /* Reset */ + /*0x1f, 0x00,*/ /* Reset */ 0x01, 0x59, /* 0x01 input format */ 0x02, 0x00, /* 0x02 temporal decimation */ 0x03, 0x12, /* 0x03 Cropping msb */ @@ -218,12 +181,10 @@ bt819_init (struct i2c_client *client) struct timing *timing = &timing_data[decoder->norm]; init[0x03 * 2 - 1] = - (((timing->vdelay >> 8) & 0x03) << 6) | (((timing-> - vactive >> 8) & - 0x03) << 4) | - (((timing->hdelay >> 8) & 0x03) << 2) | ((timing-> - hactive >> 8) & - 0x03); + (((timing->vdelay >> 8) & 0x03) << 6) | + (((timing->vactive >> 8) & 0x03) << 4) | + (((timing->hdelay >> 8) & 0x03) << 2) | + ((timing->hactive >> 8) & 0x03); init[0x04 * 2 - 1] = timing->vdelay & 0xff; init[0x05 * 2 - 1] = timing->vactive & 0xff; init[0x06 * 2 - 1] = timing->hdelay & 0xff; @@ -238,27 +199,22 @@ bt819_init (struct i2c_client *client) /* init */ return bt819_write_block(client, init, sizeof(init)); - } /* ----------------------------------------------------------------------- */ -static int -bt819_command (struct i2c_client *client, - unsigned int cmd, - void *arg) +static int bt819_command(struct i2c_client *client, unsigned cmd, void *arg) { int temp; struct bt819 *decoder = i2c_get_clientdata(client); - if (!decoder->initialized) { // First call to bt819_init could be - bt819_init(client); // without #FRST = 0 + if (!decoder->initialized) { /* First call to bt819_init could be */ + bt819_init(client); /* without #FRST = 0 */ decoder->initialized = 1; } switch (cmd) { - case 0: /* This is just for testing!!! */ bt819_init(client); @@ -274,8 +230,8 @@ bt819_command (struct i2c_client *client, VIDEO_DECODER_CCIR; cap->inputs = 8; cap->outputs = 1; - } break; + } case DECODER_GET_STATUS: { @@ -285,9 +241,9 @@ bt819_command (struct i2c_client *client, status = bt819_read(client, 0x00); res = 0; - if ((status & 0x80)) { + if ((status & 0x80)) res |= DECODER_STATUS_GOOD; - } + switch (decoder->norm) { case VIDEO_MODE_NTSC: res |= DECODER_STATUS_NTSC; @@ -297,28 +253,25 @@ bt819_command (struct i2c_client *client, break; default: case VIDEO_MODE_AUTO: - if ((status & 0x10)) { + if ((status & 0x10)) res |= DECODER_STATUS_PAL; - } else { + else res |= DECODER_STATUS_NTSC; - } break; } res |= DECODER_STATUS_COLOR; *iarg = res; - dprintk(1, KERN_INFO "%s: get status %x\n", I2C_NAME(client), - *iarg); - } + v4l_dbg(1, debug, client, "get status %x\n", *iarg); break; + } case DECODER_SET_NORM: { int *iarg = arg; struct timing *timing = NULL; - dprintk(1, KERN_INFO "%s: set norm %x\n", I2C_NAME(client), - *iarg); + v4l_dbg(1, debug, client, "set norm %x\n", *iarg); switch (*iarg) { case VIDEO_MODE_NTSC: @@ -327,7 +280,7 @@ bt819_command (struct i2c_client *client, bt819_setbit(client, 0x01, 5, 0); bt819_write(client, 0x18, 0x68); bt819_write(client, 0x19, 0x5d); - //bt819_setbit(client, 0x1a, 5, 1); + /* bt819_setbit(client, 0x1a, 5, 1); */ timing = &timing_data[VIDEO_MODE_NTSC]; break; case VIDEO_MODE_PAL: @@ -336,7 +289,7 @@ bt819_command (struct i2c_client *client, bt819_setbit(client, 0x01, 5, 1); bt819_write(client, 0x18, 0x7f); bt819_write(client, 0x19, 0x72); - //bt819_setbit(client, 0x1a, 5, 0); + /* bt819_setbit(client, 0x1a, 5, 0); */ timing = &timing_data[VIDEO_MODE_PAL]; break; case VIDEO_MODE_AUTO: @@ -344,10 +297,7 @@ bt819_command (struct i2c_client *client, bt819_setbit(client, 0x01, 1, 0); break; default: - dprintk(1, - KERN_ERR - "%s: unsupported norm %d\n", - I2C_NAME(client), *iarg); + v4l_dbg(1, debug, client, "unsupported norm %x\n", *iarg); return -EINVAL; } @@ -366,19 +316,17 @@ bt819_command (struct i2c_client *client, } decoder->norm = *iarg; - } break; + } case DECODER_SET_INPUT: { int *iarg = arg; - dprintk(1, KERN_INFO "%s: set input %x\n", I2C_NAME(client), - *iarg); + v4l_dbg(1, debug, client, "set input %x\n", *iarg); - if (*iarg < 0 || *iarg > 7) { + if (*iarg < 0 || *iarg > 7) return -EINVAL; - } if (decoder->input != *iarg) { decoder->input = *iarg; @@ -391,52 +339,42 @@ bt819_command (struct i2c_client *client, bt819_setbit(client, 0x1a, 1, 0); } } - } break; + } case DECODER_SET_OUTPUT: { int *iarg = arg; - dprintk(1, KERN_INFO "%s: set output %x\n", I2C_NAME(client), - *iarg); + v4l_dbg(1, debug, client, "set output %x\n", *iarg); /* not much choice of outputs */ - if (*iarg != 0) { + if (*iarg != 0) return -EINVAL; - } - } break; + } case DECODER_ENABLE_OUTPUT: { int *iarg = arg; int enable = (*iarg != 0); - dprintk(1, KERN_INFO "%s: enable output %x\n", - I2C_NAME(client), *iarg); + v4l_dbg(1, debug, client, "enable output %x\n", *iarg); if (decoder->enable != enable) { decoder->enable = enable; - - if (decoder->enable) { - bt819_setbit(client, 0x16, 7, 0); - } else { - bt819_setbit(client, 0x16, 7, 1); - } + bt819_setbit(client, 0x16, 7, !enable); } - } break; + } case DECODER_SET_PICTURE: { struct video_picture *pic = arg; - dprintk(1, - KERN_INFO - "%s: set picture brightness %d contrast %d colour %d\n", - I2C_NAME(client), pic->brightness, pic->contrast, - pic->colour); + v4l_dbg(1, debug, client, + "set picture brightness %d contrast %d colour %d\n", + pic->brightness, pic->contrast, pic->colour); if (decoder->bright != pic->brightness) { @@ -474,8 +412,8 @@ bt819_command (struct i2c_client *client, bt819_write(client, 0x0f, 128 - (decoder->hue >> 8)); } - } break; + } default: return -EINVAL; @@ -486,55 +424,44 @@ bt819_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_BT819 >> 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[] = { 0x8a >> 1, I2C_CLIENT_END }; -static struct i2c_driver i2c_driver_bt819; +I2C_CLIENT_INSMOD; -static int -bt819_detect_client (struct i2c_adapter *adapter, - int address, - int kind) +static int bt819_probe(struct i2c_client *client, + const struct i2c_device_id *id) { - int i, id; + int i, ver; struct bt819 *decoder; - struct i2c_client *client; - - dprintk(1, - KERN_INFO - "bt819: detecting bt819 client on address 0x%x\n", - address << 1); + const char *name; /* 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_bt819; + ver = bt819_read(client, 0x17); + switch (ver & 0xf0) { + case 0x70: + name = "bt819a"; + break; + case 0x60: + name = "bt817a"; + break; + case 0x20: + name = "bt815a"; + break; + default: + v4l_dbg(1, debug, client, + "unknown chip version 0x%02x\n", ver); + return -ENODEV; + } + + v4l_info(client, "%s found @ 0x%x (%s)\n", name, + client->addr << 1, client->adapter->name); decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL); - if (decoder == NULL) { - kfree(client); + if (decoder == NULL) return -ENOMEM; - } decoder->norm = VIDEO_MODE_NTSC; decoder->input = 0; decoder->enable = 1; @@ -545,97 +472,33 @@ bt819_detect_client (struct i2c_adapter *adapter, decoder->initialized = 0; i2c_set_clientdata(client, decoder); - id = bt819_read(client, 0x17); - switch (id & 0xf0) { - case 0x70: - strlcpy(I2C_NAME(client), "bt819a", sizeof(I2C_NAME(client))); - break; - case 0x60: - strlcpy(I2C_NAME(client), "bt817a", sizeof(I2C_NAME(client))); - break; - case 0x20: - strlcpy(I2C_NAME(client), "bt815a", sizeof(I2C_NAME(client))); - break; - default: - dprintk(1, - KERN_ERR - "bt819: unknown chip version 0x%x (ver 0x%x)\n", - id & 0xf0, id & 0x0f); - kfree(decoder); - kfree(client); - return 0; - } - - i = i2c_attach_client(client); - if (i) { - kfree(client); - kfree(decoder); - return i; - } - i = bt819_init(client); - if (i < 0) { - dprintk(1, KERN_ERR "%s_attach: init status %d\n", - I2C_NAME(client), i); - } else { - dprintk(1, - KERN_INFO - "%s_attach: chip version 0x%x at address 0x%x\n", - I2C_NAME(client), id & 0x0f, - client->addr << 1); - } - + if (i < 0) + v4l_dbg(1, debug, client, "init status %d\n", i); return 0; } -static int -bt819_attach_adapter (struct i2c_adapter *adapter) -{ - return i2c_probe(adapter, &addr_data, &bt819_detect_client); -} - -static int -bt819_detach_client (struct i2c_client *client) +static int bt819_remove(struct i2c_client *client) { - struct bt819 *decoder = i2c_get_clientdata(client); - int err; - - err = i2c_detach_client(client); - if (err) { - return err; - } - - kfree(decoder); - kfree(client); - + kfree(i2c_get_clientdata(client)); return 0; } /* ----------------------------------------------------------------------- */ -static struct i2c_driver i2c_driver_bt819 = { - .driver = { - .name = "bt819", - }, - - .id = I2C_DRIVERID_BT819, +static const struct i2c_device_id bt819_id[] = { + { "bt819a", 0 }, + { "bt817a", 0 }, + { "bt815a", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bt819_id); - .attach_adapter = bt819_attach_adapter, - .detach_client = bt819_detach_client, +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "bt819", + .driverid = I2C_DRIVERID_BT819, .command = bt819_command, + .probe = bt819_probe, + .remove = bt819_remove, + .id_table = bt819_id, }; - -static int __init -bt819_init_module (void) -{ - return i2c_add_driver(&i2c_driver_bt819); -} - -static void __exit -bt819_exit (void) -{ - i2c_del_driver(&i2c_driver_bt819); -} - -module_init(bt819_init_module); -module_exit(bt819_exit); |