diff options
Diffstat (limited to 'drivers/media/video/saa5246a.c')
| -rw-r--r-- | drivers/media/video/saa5246a.c | 556 |
1 files changed, 413 insertions, 143 deletions
diff --git a/drivers/media/video/saa5246a.c b/drivers/media/video/saa5246a.c index 6ee63e6..4a21b8a 100644 --- a/drivers/media/video/saa5246a.c +++ b/drivers/media/video/saa5246a.c @@ -43,135 +43,363 @@ #include <linux/mm.h> #include <linux/init.h> #include <linux/i2c.h> +#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/videotext.h> #include <linux/videodev.h> #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> -#include <linux/mutex.h> - -#include "saa5246a.h" +#include <media/v4l2-i2c-drv-legacy.h> MODULE_AUTHOR("Michael Geng <linux@MichaelGeng.de>"); MODULE_DESCRIPTION("Philips SAA5246A, SAA5281 Teletext decoder driver"); MODULE_LICENSE("GPL"); -struct saa5246a_device -{ - u8 pgbuf[NUM_DAUS][VTX_VIRTUALSIZE]; - int is_searching[NUM_DAUS]; - struct i2c_client *client; - struct mutex lock; -}; +#define MAJOR_VERSION 1 /* driver major version number */ +#define MINOR_VERSION 8 /* driver minor version number */ + +/* Number of DAUs = number of pages that can be searched at the same time. */ +#define NUM_DAUS 4 + +#define NUM_ROWS_PER_PAGE 40 + +/* first column is 0 (not 1) */ +#define POS_TIME_START 32 +#define POS_TIME_END 39 + +#define POS_HEADER_START 7 +#define POS_HEADER_END 31 + +/* Returns 'true' if the part of the videotext page described with req contains + (at least parts of) the time field */ +#define REQ_CONTAINS_TIME(p_req) \ + ((p_req)->start <= POS_TIME_END && \ + (p_req)->end >= POS_TIME_START) + +/* Returns 'true' if the part of the videotext page described with req contains + (at least parts of) the page header */ +#define REQ_CONTAINS_HEADER(p_req) \ + ((p_req)->start <= POS_HEADER_END && \ + (p_req)->end >= POS_HEADER_START) + +/*****************************************************************************/ +/* Mode register numbers of the SAA5246A */ +/*****************************************************************************/ +#define SAA5246A_REGISTER_R0 0 +#define SAA5246A_REGISTER_R1 1 +#define SAA5246A_REGISTER_R2 2 +#define SAA5246A_REGISTER_R3 3 +#define SAA5246A_REGISTER_R4 4 +#define SAA5246A_REGISTER_R5 5 +#define SAA5246A_REGISTER_R6 6 +#define SAA5246A_REGISTER_R7 7 +#define SAA5246A_REGISTER_R8 8 +#define SAA5246A_REGISTER_R9 9 +#define SAA5246A_REGISTER_R10 10 +#define SAA5246A_REGISTER_R11 11 +#define SAA5246A_REGISTER_R11B 11 + +/* SAA5246A mode registers often autoincrement to the next register. + Therefore we use variable argument lists. The following macro indicates + the end of a command list. */ +#define COMMAND_END (-1) + +/*****************************************************************************/ +/* Contents of the mode registers of the SAA5246A */ +/*****************************************************************************/ +/* Register R0 (Advanced Control) */ +#define R0_SELECT_R11 0x00 +#define R0_SELECT_R11B 0x01 + +#define R0_PLL_TIME_CONSTANT_LONG 0x00 +#define R0_PLL_TIME_CONSTANT_SHORT 0x02 + +#define R0_ENABLE_nODD_EVEN_OUTPUT 0x00 +#define R0_DISABLE_nODD_EVEN_OUTPUT 0x04 + +#define R0_ENABLE_HDR_POLL 0x00 +#define R0_DISABLE_HDR_POLL 0x10 + +#define R0_DO_NOT_FORCE_nODD_EVEN_LOW_IF_PICTURE_DISPLAYED 0x00 +#define R0_FORCE_nODD_EVEN_LOW_IF_PICTURE_DISPLAYED 0x20 + +#define R0_NO_FREE_RUN_PLL 0x00 +#define R0_FREE_RUN_PLL 0x40 + +#define R0_NO_AUTOMATIC_FASTEXT_PROMPT 0x00 +#define R0_AUTOMATIC_FASTEXT_PROMPT 0x80 + +/* Register R1 (Mode) */ +#define R1_INTERLACED_312_AND_HALF_312_AND_HALF_LINES 0x00 +#define R1_NON_INTERLACED_312_313_LINES 0x01 +#define R1_NON_INTERLACED_312_312_LINES 0x02 +#define R1_FFB_LEADING_EDGE_IN_FIRST_BROAD_PULSE 0x03 +#define R1_FFB_LEADING_EDGE_IN_SECOND_BROAD_PULSE 0x07 + +#define R1_DEW 0x00 +#define R1_FULL_FIELD 0x08 + +#define R1_EXTENDED_PACKET_DISABLE 0x00 +#define R1_EXTENDED_PACKET_ENABLE 0x10 + +#define R1_DAUS_ALL_ON 0x00 +#define R1_DAUS_ALL_OFF 0x20 + +#define R1_7_BITS_PLUS_PARITY 0x00 +#define R1_8_BITS_NO_PARITY 0x40 + +#define R1_VCS_TO_SCS 0x00 +#define R1_NO_VCS_TO_SCS 0x80 + +/* Register R2 (Page request address) */ +#define R2_IN_R3_SELECT_PAGE_HUNDREDS 0x00 +#define R2_IN_R3_SELECT_PAGE_TENS 0x01 +#define R2_IN_R3_SELECT_PAGE_UNITS 0x02 +#define R2_IN_R3_SELECT_HOURS_TENS 0x03 +#define R2_IN_R3_SELECT_HOURS_UNITS 0x04 +#define R2_IN_R3_SELECT_MINUTES_TENS 0x05 +#define R2_IN_R3_SELECT_MINUTES_UNITS 0x06 + +#define R2_DAU_0 0x00 +#define R2_DAU_1 0x10 +#define R2_DAU_2 0x20 +#define R2_DAU_3 0x30 + +#define R2_BANK_0 0x00 +#define R2_BANK 1 0x40 + +#define R2_HAMMING_CHECK_ON 0x80 +#define R2_HAMMING_CHECK_OFF 0x00 + +/* Register R3 (Page request data) */ +#define R3_PAGE_HUNDREDS_0 0x00 +#define R3_PAGE_HUNDREDS_1 0x01 +#define R3_PAGE_HUNDREDS_2 0x02 +#define R3_PAGE_HUNDREDS_3 0x03 +#define R3_PAGE_HUNDREDS_4 0x04 +#define R3_PAGE_HUNDREDS_5 0x05 +#define R3_PAGE_HUNDREDS_6 0x06 +#define R3_PAGE_HUNDREDS_7 0x07 -static struct video_device saa_template; /* Declared near bottom */ +#define R3_HOLD_PAGE 0x00 +#define R3_UPDATE_PAGE 0x08 -/* Addresses to scan */ -static unsigned short normal_i2c[] = { I2C_ADDRESS, I2C_CLIENT_END }; +#define R3_PAGE_HUNDREDS_DO_NOT_CARE 0x00 +#define R3_PAGE_HUNDREDS_DO_CARE 0x10 -I2C_CLIENT_INSMOD; +#define R3_PAGE_TENS_DO_NOT_CARE 0x00 +#define R3_PAGE_TENS_DO_CARE 0x10 -static struct i2c_client client_template; +#define R3_PAGE_UNITS_DO_NOT_CARE 0x00 +#define R3_PAGE_UNITS_DO_CARE 0x10 -static int saa5246a_attach(struct i2c_adapter *adap, int addr, int kind) -{ - int pgbuf; - int err; - struct i2c_client *client; - struct video_device *vd; - struct saa5246a_device *t; +#define R3_HOURS_TENS_DO_NOT_CARE 0x00 +#define R3_HOURS_TENS_DO_CARE 0x10 - printk(KERN_INFO "saa5246a: teletext chip found.\n"); - client=kmalloc(sizeof(*client), GFP_KERNEL); - if(client==NULL) - return -ENOMEM; - client_template.adapter = adap; - client_template.addr = addr; - memcpy(client, &client_template, sizeof(*client)); - t = kzalloc(sizeof(*t), GFP_KERNEL); - if(t==NULL) - { - kfree(client); - return -ENOMEM; - } - strlcpy(client->name, IF_NAME, I2C_NAME_SIZE); - mutex_init(&t->lock); +#define R3_HOURS_UNITS_DO_NOT_CARE 0x00 +#define R3_HOURS_UNITS_DO_CARE 0x10 - /* - * Now create a video4linux device - */ +#define R3_MINUTES_TENS_DO_NOT_CARE 0x00 +#define R3_MINUTES_TENS_DO_CARE 0x10 - vd = video_device_alloc(); - if(vd==NULL) - { - kfree(t); - kfree(client); - return -ENOMEM; - } - i2c_set_clientdata(client, vd); - memcpy(vd, &saa_template, sizeof(*vd)); +#define R3_MINUTES_UNITS_DO_NOT_CARE 0x00 +#define R3_MINUTES_UNITS_DO_CARE 0x10 - for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) - { - memset(t->pgbuf[pgbuf], ' ', sizeof(t->pgbuf[0])); - t->is_searching[pgbuf] = false; - } - vd->priv=t; +/* Register R4 (Display chapter) */ +#define R4_DISPLAY_PAGE_0 0x00 +#define R4_DISPLAY_PAGE_1 0x01 +#define R4_DISPLAY_PAGE_2 0x02 +#define R4_DISPLAY_PAGE_3 0x03 +#define R4_DISPLAY_PAGE_4 0x04 +#define R4_DISPLAY_PAGE_5 0x05 +#define R4_DISPLAY_PAGE_6 0x06 +#define R4_DISPLAY_PAGE_7 0x07 +/* Register R5 (Normal display control) */ +#define R5_PICTURE_INSIDE_BOXING_OFF 0x00 +#define R5_PICTURE_INSIDE_BOXING_ON 0x01 - /* - * Register it - */ +#define R5_PICTURE_OUTSIDE_BOXING_OFF 0x00 +#define R5_PICTURE_OUTSIDE_BOXING_ON 0x02 - if((err=video_register_device(vd, VFL_TYPE_VTX,-1))<0) - { - kfree(t); - kfree(client); - video_device_release(vd); - return err; - } - t->client = client; - i2c_attach_client(client); - return 0; -} +#define R5_TEXT_INSIDE_BOXING_OFF 0x00 +#define R5_TEXT_INSIDE_BOXING_ON 0x04 -/* - * We do most of the hard work when we become a device on the i2c. - */ -static int saa5246a_probe(struct i2c_adapter *adap) -{ - if (adap->class & I2C_CLASS_TV_ANALOG) - return i2c_probe(adap, &addr_data, saa5246a_attach); - return 0; -} +#define R5_TEXT_OUTSIDE_BOXING_OFF 0x00 +#define R5_TEXT_OUTSIDE_BOXING_ON 0x08 -static int saa5246a_detach(struct i2c_client *client) -{ - struct video_device *vd = i2c_get_clientdata(client); - i2c_detach_client(client); - video_unregister_device(vd); - kfree(vd->priv); - kfree(client); - return 0; -} +#define R5_CONTRAST_REDUCTION_INSIDE_BOXING_OFF 0x00 +#define R5_CONTRAST_REDUCTION_INSIDE_BOXING_ON 0x10 -/* - * I2C interfaces - */ +#define R5_CONTRAST_REDUCTION_OUTSIDE_BOXING_OFF 0x00 +#define R5_CONTRAST_REDUCTION_OUTSIDE_BOXING_ON 0x20 + +#define R5_BACKGROUND_COLOR_INSIDE_BOXING_OFF 0x00 +#define R5_BACKGROUND_COLOR_INSIDE_BOXING_ON 0x40 + +#define R5_BACKGROUND_COLOR_OUTSIDE_BOXING_OFF 0x00 +#define R5_BACKGROUND_COLOR_OUTSIDE_BOXING_ON 0x80 + +/* Register R6 (Newsflash display) */ +#define R6_NEWSFLASH_PICTURE_INSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_PICTURE_INSIDE_BOXING_ON 0x01 + +#define R6_NEWSFLASH_PICTURE_OUTSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_PICTURE_OUTSIDE_BOXING_ON 0x02 + +#define R6_NEWSFLASH_TEXT_INSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_TEXT_INSIDE_BOXING_ON 0x04 + +#define R6_NEWSFLASH_TEXT_OUTSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_TEXT_OUTSIDE_BOXING_ON 0x08 + +#define R6_NEWSFLASH_CONTRAST_REDUCTION_INSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_CONTRAST_REDUCTION_INSIDE_BOXING_ON 0x10 + +#define R6_NEWSFLASH_CONTRAST_REDUCTION_OUTSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_CONTRAST_REDUCTION_OUTSIDE_BOXING_ON 0x20 + +#define R6_NEWSFLASH_BACKGROUND_COLOR_INSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_BACKGROUND_COLOR_INSIDE_BOXING_ON 0x40 + +#define R6_NEWSFLASH_BACKGROUND_COLOR_OUTSIDE_BOXING_OFF 0x00 +#define R6_NEWSFLASH_BACKGROUND_COLOR_OUTSIDE_BOXING_ON 0x80 + +/* Register R7 (Display mode) */ +#define R7_BOX_OFF_ROW_0 0x00 +#define R7_BOX_ON_ROW_0 0x01 + +#define R7_BOX_OFF_ROW_1_TO_23 0x00 +#define R7_BOX_ON_ROW_1_TO_23 0x02 + +#define R7_BOX_OFF_ROW_24 0x00 +#define R7_BOX_ON_ROW_24 0x04 + +#define R7_SINGLE_HEIGHT 0x00 +#define R7_DOUBLE_HEIGHT 0x08 + +#define R7_TOP_HALF 0x00 +#define R7_BOTTOM_HALF 0x10 + +#define R7_REVEAL_OFF 0x00 +#define R7_REVEAL_ON 0x20 + +#define R7_CURSER_OFF 0x00 +#define R7_CURSER_ON 0x40 + +#define R7_STATUS_BOTTOM 0x00 +#define R7_STATUS_TOP 0x80 + +/* Register R8 (Active chapter) */ +#define R8_ACTIVE_CHAPTER_0 0x00 +#define R8_ACTIVE_CHAPTER_1 0x01 +#define R8_ACTIVE_CHAPTER_2 0x02 +#define R8_ACTIVE_CHAPTER_3 0x03 +#define R8_ACTIVE_CHAPTER_4 0x04 +#define R8_ACTIVE_CHAPTER_5 0x05 +#define R8_ACTIVE_CHAPTER_6 0x06 +#define R8_ACTIVE_CHAPTER_7 0x07 + +#define R8_CLEAR_MEMORY 0x08 +#define R8_DO_NOT_CLEAR_MEMORY 0x00 + +/* Register R9 (Curser row) */ +#define R9_CURSER_ROW_0 0x00 +#define R9_CURSER_ROW_1 0x01 +#define R9_CURSER_ROW_2 0x02 +#define R9_CURSER_ROW_25 0x19 + +/* Register R10 (Curser column) */ +#define R10_CURSER_COLUMN_0 0x00 +#define R10_CURSER_COLUMN_6 0x06 +#define R10_CURSER_COLUMN_8 0x08 + +/*****************************************************************************/ +/* Row 25 control data in column 0 to 9 */ +/*****************************************************************************/ +#define ROW25_COLUMN0_PAGE_UNITS 0x0F + +#define ROW25_COLUMN1_PAGE_TENS 0x0F + +#define ROW25_COLUMN2_MINUTES_UNITS 0x0F -static struct i2c_driver i2c_driver_videotext = +#define ROW25_COLUMN3_MINUTES_TENS 0x07 +#define ROW25_COLUMN3_DELETE_PAGE 0x08 + +#define ROW25_COLUMN4_HOUR_UNITS 0x0F + +#define ROW25_COLUMN5_HOUR_TENS 0x03 +#define ROW25_COLUMN5_INSERT_HEADLINE 0x04 +#define ROW25_COLUMN5_INSERT_SUBTITLE 0x08 + +#define ROW25_COLUMN6_SUPPRESS_HEADER 0x01 +#define ROW25_COLUMN6_UPDATE_PAGE 0x02 +#define ROW25_COLUMN6_INTERRUPTED_SEQUENCE 0x04 +#define ROW25_COLUMN6_SUPPRESS_DISPLAY 0x08 + +#define ROW25_COLUMN7_SERIAL_MODE 0x01 +#define ROW25_COLUMN7_CHARACTER_SET 0x0E + +#define ROW25_COLUMN8_PAGE_HUNDREDS 0x07 +#define ROW25_COLUMN8_PAGE_NOT_FOUND 0x10 + +#define ROW25_COLUMN9_PAGE_BEING_LOOKED_FOR 0x20 + +#define ROW25_COLUMN0_TO_7_HAMMING_ERROR 0x10 + +/*****************************************************************************/ +/* Helper macros for extracting page, hour and minute digits */ +/*****************************************************************************/ +/* BYTE_POS 0 is at row 0, column 0, + BYTE_POS 1 is at row 0, column 1, + BYTE_POS 40 is at row 1, column 0, (with NUM_ROWS_PER_PAGE = 40) + BYTE_POS 41 is at row 1, column 1, (with NUM_ROWS_PER_PAGE = 40), + ... */ +#define ROW(BYTE_POS) (BYTE_POS / NUM_ROWS_PER_PAGE) +#define COLUMN(BYTE_POS) (BYTE_POS % NUM_ROWS_PER_PAGE) + +/*****************************************************************************/ +/* Helper macros for extracting page, hour and minute digits */ +/*****************************************************************************/ +/* Macros for extracting hundreds, tens and units of a page number which + must be in the range 0 ... 0x799. + Note that page is coded in hexadecimal, i.e. 0x123 means page 123. + page 0x.. means page 8.. */ +#define HUNDREDS_OF_PAGE(page) (((page) / 0x100) & 0x7) +#define TENS_OF_PAGE(page) (((page) / 0x10) & 0xF) +#define UNITS_OF_PAGE(page) ((page) & 0xF) + +/* Macros for extracting tens and units of a hour information which + must be in the range 0 ... 0x24. + Note that hour is coded in hexadecimal, i.e. 0x12 means 12 hours */ +#define TENS_OF_HOUR(hour) ((hour) / 0x10) +#define UNITS_OF_HOUR(hour) ((hour) & 0xF) + +/* Macros for extracting tens and units of a minute information which + must be in the range 0 ... 0x59. + Note that minute is coded in hexadecimal, i.e. 0x12 means 12 minutes */ +#define TENS_OF_MINUTE(minute) ((minute) / 0x10) +#define UNITS_OF_MINUTE(minute) ((minute) & 0xF) + +#define HOUR_MAX 0x23 +#define MINUTE_MAX 0x59 +#define PAGE_MAX 0x8FF + + +struct saa5246a_device { - .driver = { - .name = IF_NAME, /* name */ - }, - .id = I2C_DRIVERID_SAA5249, /* in i2c.h */ - .attach_adapter = saa5246a_probe, - .detach_client = saa5246a_detach, + u8 pgbuf[NUM_DAUS][VTX_VIRTUALSIZE]; + int is_searching[NUM_DAUS]; + struct i2c_client *client; + unsigned long in_use; + struct mutex lock; }; -static struct i2c_client client_template = { - .driver = &i2c_driver_videotext, - .name = "(unset)", -}; +static struct video_device saa_template; /* Declared near bottom */ + +/* + * I2C interfaces + */ static int i2c_sendbuf(struct saa5246a_device *t, int reg, int count, u8 *data) { @@ -579,8 +807,8 @@ static inline int saa5246a_stop_dau(struct saa5246a_device *t, static int do_saa5246a_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg) { - struct video_device *vd = video_devdata(file); - struct saa5246a_device *t=vd->priv; + struct saa5246a_device *t = video_drvdata(file); + switch(cmd) { case VTXIOCGETINFO: @@ -720,8 +948,7 @@ static inline unsigned int vtx_fix_command(unsigned int cmd) static int saa5246a_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - struct video_device *vd = video_devdata(file); - struct saa5246a_device *t = vd->priv; + struct saa5246a_device *t = video_drvdata(file); int err; cmd = vtx_fix_command(cmd); @@ -733,21 +960,15 @@ static int saa5246a_ioctl(struct inode *inode, struct file *file, static int saa5246a_open(struct inode *inode, struct file *file) { - struct video_device *vd = video_devdata(file); - struct saa5246a_device *t = vd->priv; - int err; + struct saa5246a_device *t = video_drvdata(file); - err = video_exclusive_open(inode,file); - if (err < 0) - return err; + if (t->client == NULL) + return -ENODEV; - if (t->client==NULL) { - err = -ENODEV; - goto fail; - } + if (test_and_set_bit(0, &t->in_use)) + return -EBUSY; if (i2c_senddata(t, SAA5246A_REGISTER_R0, - R0_SELECT_R11 | R0_PLL_TIME_CONSTANT_LONG | R0_ENABLE_nODD_EVEN_OUTPUT | @@ -773,21 +994,15 @@ static int saa5246a_open(struct inode *inode, struct file *file) COMMAND_END)) { - err = -EIO; - goto fail; + clear_bit(0, &t->in_use); + return -EIO; } - return 0; - -fail: - video_exclusive_release(inode,file); - return err; } static int saa5246a_release(struct inode *inode, struct file *file) { - struct video_device *vd = video_devdata(file); - struct saa5246a_device *t = vd->priv; + struct saa5246a_device *t = video_drvdata(file); /* Stop all acquisition circuits. */ i2c_senddata(t, SAA5246A_REGISTER_R1, @@ -800,26 +1015,10 @@ static int saa5246a_release(struct inode *inode, struct file *file) R1_VCS_TO_SCS, COMMAND_END); - video_exclusive_release(inode,file); + clear_bit(0, &t->in_use); return 0; } -static int __init init_saa_5246a (void) -{ - printk(KERN_INFO - "SAA5246A (or compatible) Teletext decoder driver version %d.%d\n", - MAJOR_VERSION, MINOR_VERSION); - return i2c_add_driver(&i2c_driver_videotext); -} - -static void __exit cleanup_saa_5246a (void) -{ - i2c_del_driver(&i2c_driver_videotext); -} - -module_init(init_saa_5246a); -module_exit(cleanup_saa_5246a); - static const struct file_operations saa_fops = { .owner = THIS_MODULE, .open = saa5246a_open, @@ -830,8 +1029,79 @@ static const struct file_operations saa_fops = { static struct video_device saa_template = { - .name = IF_NAME, + .name = "saa5246a", .fops = &saa_fops, .release = video_device_release, .minor = -1, }; + +/* Addresses to scan */ +static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END }; + +I2C_CLIENT_INSMOD; + +static int saa5246a_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int pgbuf; + int err; + struct video_device *vd; + struct saa5246a_device *t; + + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); + v4l_info(client, "VideoText version %d.%d\n", + MAJOR_VERSION, MINOR_VERSION); + t = kzalloc(sizeof(*t), GFP_KERNEL); + if (t == NULL) + return -ENOMEM; + mutex_init(&t->lock); + + /* Now create a video4linux device */ + vd = video_device_alloc(); + if (vd == NULL) { + kfree(t); + return -ENOMEM; + } + i2c_set_clientdata(client, vd); + memcpy(vd, &saa_template, sizeof(*vd)); + + for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) { + memset(t->pgbuf[pgbuf], ' ', sizeof(t->pgbuf[0])); + t->is_searching[pgbuf] = false; + } + video_set_drvdata(vd, t); + + /* Register it */ + err = video_register_device(vd, VFL_TYPE_VTX, -1); + if (err < 0) { + kfree(t); + video_device_release(vd); + return err; + } + t->client = client; + return 0; +} + +static int saa5246a_remove(struct i2c_client *client) +{ + struct video_device *vd = i2c_get_clientdata(client); + + video_unregister_device(vd); + kfree(video_get_drvdata(vd)); + return 0; +} + +static const struct i2c_device_id saa5246a_id[] = { + { "saa5246a", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, saa5246a_id); + +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "saa5246a", + .driverid = I2C_DRIVERID_SAA5249, + .probe = saa5246a_probe, + .remove = saa5246a_remove, + .id_table = saa5246a_id, +}; |