diff options
Diffstat (limited to 'include/media/v4l2-common.h')
| -rw-r--r-- | include/media/v4l2-common.h | 242 |
1 files changed, 133 insertions, 109 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index d4030a7e16e..48f974866f1 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -26,7 +26,7 @@ #ifndef V4L2_COMMON_H_ #define V4L2_COMMON_H_ -/* v4l debugging and diagnostics */ +#include <media/v4l2-dev.h> /* Common printk constucts for v4l-i2c drivers. These macros create a unique prefix consisting of the driver name, the adapter number and the i2c @@ -35,7 +35,7 @@ printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg) #define v4l_client_printk(level, client, fmt, arg...) \ - v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \ + v4l_printk(level, (client)->dev.driver->name, (client)->adapter, \ (client)->addr, fmt , ## arg) #define v4l_err(client, fmt, arg...) \ @@ -55,129 +55,153 @@ v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \ } while (0) -/* Prints the ioctl in a human-readable format */ -extern void v4l_printk_ioctl(unsigned int cmd); +/* ------------------------------------------------------------------------- */ -/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */ -#define v4l_print_ioctl(name, cmd) \ - do { \ - printk(KERN_DEBUG "%s: ", name); \ - v4l_printk_ioctl(cmd); \ - } while (0) +/* These printk constructs can be used with v4l2_device and v4l2_subdev */ +#define v4l2_printk(level, dev, fmt, arg...) \ + printk(level "%s: " fmt, (dev)->name , ## arg) + +#define v4l2_err(dev, fmt, arg...) \ + v4l2_printk(KERN_ERR, dev, fmt , ## arg) -/* Use this macro in I2C drivers where 'client' is the struct i2c_client - pointer */ -#define v4l_i2c_print_ioctl(client, cmd) \ - do { \ - v4l_client_printk(KERN_DEBUG, client, ""); \ - v4l_printk_ioctl(cmd); \ +#define v4l2_warn(dev, fmt, arg...) \ + v4l2_printk(KERN_WARNING, dev, fmt , ## arg) + +#define v4l2_info(dev, fmt, arg...) \ + v4l2_printk(KERN_INFO, dev, fmt , ## arg) + +/* These three macros assume that the debug level is set with a module + parameter called 'debug'. */ +#define v4l2_dbg(level, debug, dev, fmt, arg...) \ + do { \ + if (debug >= (level)) \ + v4l2_printk(KERN_DEBUG, dev, fmt , ## arg); \ } while (0) /* ------------------------------------------------------------------------- */ -/* Internal ioctls */ +/* Control helper functions */ + +int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl, + const char * const *menu_items); +const char *v4l2_ctrl_get_name(u32 id); +const char * const *v4l2_ctrl_get_menu(u32 id); +const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len); +int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def); +int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, + struct v4l2_queryctrl *qctrl, const char * const *menu_items); +#define V4L2_CTRL_MENU_IDS_END (0xffffffff) +int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids); + +/* Note: ctrl_classes points to an array of u32 pointers. Each u32 array is a + 0-terminated array of control IDs. Each array must be sorted low to high + and belong to the same control class. The array of u32 pointers must also + be sorted, from low class IDs to high class IDs. */ +u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id); -/* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */ -struct v4l2_register { - u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */ - unsigned long reg; - u32 val; -}; +/* ------------------------------------------------------------------------- */ -/* VIDIOC_INT_DECODE_VBI_LINE */ -struct v4l2_decode_vbi_line { - u32 is_second_field; /* Set to 0 for the first (odd) field, - set to 1 for the second (even) field. */ - u8 *p; /* Pointer to the sliced VBI data from the decoder. - On exit points to the start of the payload. */ - u32 line; /* Line number of the sliced VBI data (1-23) */ - u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ +/* I2C Helper functions */ + +struct i2c_driver; +struct i2c_adapter; +struct i2c_client; +struct i2c_device_id; +struct v4l2_device; +struct v4l2_subdev; +struct v4l2_subdev_ops; + + +/* Load an i2c module and return an initialized v4l2_subdev struct. + The client_type argument is the name of the chip that's on the adapter. */ +struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev, + struct i2c_adapter *adapter, const char *client_type, + u8 addr, const unsigned short *probe_addrs); + +struct i2c_board_info; + +struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, + struct i2c_adapter *adapter, struct i2c_board_info *info, + const unsigned short *probe_addrs); + +/* Initialize a v4l2_subdev with data from an i2c_client struct */ +void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, + const struct v4l2_subdev_ops *ops); +/* Return i2c client address of v4l2_subdev. */ +unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd); + +enum v4l2_i2c_tuner_type { + ADDRS_RADIO, /* Radio tuner addresses */ + ADDRS_DEMOD, /* Demod tuner addresses */ + ADDRS_TV, /* TV tuner addresses */ + /* TV tuner addresses if demod is present, this excludes + addresses used by the demodulator from the list of + candidates. */ + ADDRS_TV_WITH_DEMOD, }; +/* Return a list of I2C tuner addresses to probe. Use only if the tuner + addresses are unknown. */ +const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type); + +/* ------------------------------------------------------------------------- */ + +/* SPI Helper functions */ +#if defined(CONFIG_SPI) -/* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */ -enum v4l2_chip_ident { - /* general idents: reserved range 0-49 */ - V4L2_IDENT_UNKNOWN = 0, +#include <linux/spi/spi.h> - /* module saa7115: reserved range 100-149 */ - V4L2_IDENT_SAA7114 = 104, - V4L2_IDENT_SAA7115 = 105, +struct spi_device; - /* module saa7127: reserved range 150-199 */ - V4L2_IDENT_SAA7127 = 157, - V4L2_IDENT_SAA7129 = 159, +/* Load an spi module and return an initialized v4l2_subdev struct. + The client_type argument is the name of the chip that's on the adapter. */ +struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev, + struct spi_master *master, struct spi_board_info *info); - /* module cx25840: reserved range 200-249 */ - V4L2_IDENT_CX25840 = 240, - V4L2_IDENT_CX25841 = 241, - V4L2_IDENT_CX25842 = 242, - V4L2_IDENT_CX25843 = 243, +/* Initialize a v4l2_subdev with data from an spi_device struct */ +void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi, + const struct v4l2_subdev_ops *ops); +#endif + +/* ------------------------------------------------------------------------- */ + +/* Note: these remaining ioctls/structs should be removed as well, but they are + still used in tuner-simple.c (TUNER_SET_CONFIG), cx18/ivtv (RESET) and + v4l2-int-device.h (v4l2_routing). To remove these ioctls some more cleanup + is needed in those modules. */ + +/* s_config */ +struct v4l2_priv_tun_config { + int tuner; + void *priv; +}; +#define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config) + +#define VIDIOC_INT_RESET _IOW ('d', 102, u32) + +struct v4l2_routing { + u32 input; + u32 output; }; -/* audio ioctls */ -/* v4l device was opened in Radio mode */ -#define AUDC_SET_RADIO _IO('d',88) -/* select from TV,radio,extern,MUTE */ -#define AUDC_SET_INPUT _IOW('d',89,int) +/* ------------------------------------------------------------------------- */ + +/* Miscellaneous helper functions */ -/* msp3400 ioctl: will be removed in the near future */ -struct msp_matrix { - int input; - int output; +void v4l_bound_align_image(unsigned int *w, unsigned int wmin, + unsigned int wmax, unsigned int walign, + unsigned int *h, unsigned int hmin, + unsigned int hmax, unsigned int halign, + unsigned int salign); + +struct v4l2_discrete_probe { + const struct v4l2_frmsize_discrete *sizes; + int num_sizes; }; -#define MSP_SET_MATRIX _IOW('m',17,struct msp_matrix) - -/* tuner ioctls */ -/* Sets tuner type and its I2C addr */ -#define TUNER_SET_TYPE_ADDR _IOW('d',90,int) -/* Puts tuner on powersaving state, disabling it, except for i2c */ -#define TUNER_SET_STANDBY _IOW('d',91,int) -/* Sets tda9887 specific stuff, like port1, port2 and qss */ -#define TDA9887_SET_CONFIG _IOW('d',92,int) - -/* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */ -#define VIDIOC_INT_S_REGISTER _IOR ('d', 100, struct v4l2_register) -#define VIDIOC_INT_G_REGISTER _IOWR('d', 101, struct v4l2_register) - -/* Reset the I2C chip */ -#define VIDIOC_INT_RESET _IO ('d', 102) - -/* Set the frequency (in Hz) of the audio clock output. - Used to slave an audio processor to the video decoder, ensuring that audio - and video remain synchronized. - Usual values for the frequency are 48000, 44100 or 32000 Hz. - If the frequency is not supported, then -EINVAL is returned. */ -#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32) - -/* Video decoders that support sliced VBI need to implement this ioctl. - Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI - data that was generated by the decoder. The driver then parses the sliced - VBI data and sets the other fields in the struct accordingly. The pointer p - is updated to point to the start of the payload which can be copied - verbatim into the data field of the v4l2_sliced_vbi_data struct. If no - valid VBI data was found, then the type field is set to 0 on return. */ -#define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line) - -/* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is - filled with the data packets that should be output. Note that if you set - the line field to 0, then that VBI signal is disabled. */ -#define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data) - -/* Used to obtain the sliced VBI packet from a readback register. Not all - video decoders support this. If no data is available because the readback - register contains invalid or erroneous data -EIO is returned. Note that - you must fill in the 'id' member and the 'field' member (to determine - whether CC data from the first or second field should be obtained). */ -#define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data *) - -/* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can - be made. */ -#define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident *) - -/* Sets I2S speed in bps. This is used to provide a standard way to select I2S - clock used by driving digital audio streams at some board designs. - Usual values for the frequency are 1024000 and 2048000. - If the frequency is not supported, then -EINVAL is returned. */ -#define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32) + +const struct v4l2_frmsize_discrete *v4l2_find_nearest_format( + const struct v4l2_discrete_probe *probe, + s32 width, s32 height); + +void v4l2_get_timestamp(struct timeval *tv); #endif /* V4L2_COMMON_H_ */ |