diff options
Diffstat (limited to 'include/media/v4l2-subdev.h')
| -rw-r--r-- | include/media/v4l2-subdev.h | 103 |
1 files changed, 99 insertions, 4 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index d411345f244b..00bf17608453 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -23,6 +23,16 @@ #include <media/v4l2-common.h> +/* generic v4l2_device notify callback notification values */ +#define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32) +#define V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ 0x00000001 +#define V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED 0x00000002 +#define V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN 0x00000004 +#define V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN 0x00000008 + +#define V4L2_SUBDEV_IR_TX_NOTIFY _IOW('v', 1, u32) +#define V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ 0x00000001 + struct v4l2_device; struct v4l2_subdev; struct tuner_setup; @@ -96,6 +106,9 @@ struct v4l2_decode_vbi_line { s_gpio: set GPIO pins. Very simple right now, might need to be extended with a direction argument if needed. + + s_power: puts subdevice in power saving mode (on == 0) or normal operation + mode (on == 1). */ struct v4l2_subdev_core_ops { int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip); @@ -118,6 +131,7 @@ struct v4l2_subdev_core_ops { int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); int (*s_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg); #endif + int (*s_power)(struct v4l2_subdev *sd, int on); }; /* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio. @@ -127,8 +141,6 @@ struct v4l2_subdev_core_ops { s_type_addr: sets tuner type and its I2C addr. s_config: sets tda9887 specific stuff, like port1, port2 and qss - - s_standby: puts tuner on powersaving state, disabling it, except for i2c. */ struct v4l2_subdev_tuner_ops { int (*s_mode)(struct v4l2_subdev *sd, enum v4l2_tuner_type); @@ -141,7 +153,6 @@ struct v4l2_subdev_tuner_ops { int (*s_modulator)(struct v4l2_subdev *sd, struct v4l2_modulator *vm); int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type); int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); - int (*s_standby)(struct v4l2_subdev *sd); }; /* s_clock_freq: set the frequency (in Hz) of the audio clock output. @@ -231,11 +242,95 @@ struct v4l2_subdev_video_ops { int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival); }; +/* + interrupt_service_routine: Called by the bridge chip's interrupt service + handler, when an IR interrupt status has be raised due to this subdev, + so that this subdev can handle the details. It may schedule work to be + performed later. It must not sleep. *Called from an IRQ context*. + + [rt]x_g_parameters: Get the current operating parameters and state of the + the IR receiver or transmitter. + + [rt]x_s_parameters: Set the current operating parameters and state of the + the IR receiver or transmitter. It is recommended to call + [rt]x_g_parameters first to fill out the current state, and only change + the fields that need to be changed. Upon return, the actual device + operating parameters and state will be returned. Note that hardware + limitations may prevent the actual settings from matching the requested + settings - e.g. an actual carrier setting of 35,904 Hz when 36,000 Hz + was requested. An exception is when the shutdown parameter is true. + The last used operational parameters will be returned, but the actual + state of the hardware be different to minimize power consumption and + processing when shutdown is true. + + rx_read: Reads received codes or pulse width data. + The semantics are similar to a non-blocking read() call. + + tx_write: Writes codes or pulse width data for transmission. + The semantics are similar to a non-blocking write() call. + */ + +enum v4l2_subdev_ir_mode { + V4L2_SUBDEV_IR_MODE_PULSE_WIDTH, /* space & mark widths in nanosecs */ +}; + +/* Data format of data read or written for V4L2_SUBDEV_IR_MODE_PULSE_WIDTH */ +#define V4L2_SUBDEV_IR_PULSE_MAX_WIDTH_NS 0x7fffffff +#define V4L2_SUBDEV_IR_PULSE_LEVEL_MASK 0x80000000 +#define V4L2_SUBDEV_IR_PULSE_RX_SEQ_END 0xffffffff + +struct v4l2_subdev_ir_parameters { + /* Either Rx or Tx */ + unsigned int bytes_per_data_element; /* of data in read or write call */ + enum v4l2_subdev_ir_mode mode; + + bool enable; + bool interrupt_enable; + bool shutdown; /* true: set hardware to low/no power, false: normal */ + + bool modulation; /* true: uses carrier, false: baseband */ + u32 max_pulse_width; /* ns, valid only for baseband signal */ + unsigned int carrier_freq; /* Hz, valid only for modulated signal*/ + unsigned int duty_cycle; /* percent, valid only for modulated signal*/ + bool invert; /* logically invert sense of mark/space */ + + /* Rx only */ + u32 noise_filter_min_width; /* ns, min time of a valid pulse */ + unsigned int carrier_range_lower; /* Hz, valid only for modulated sig */ + unsigned int carrier_range_upper; /* Hz, valid only for modulated sig */ + u32 resolution; /* ns */ +}; + +struct v4l2_subdev_ir_ops { + /* Common to receiver and transmitter */ + int (*interrupt_service_routine)(struct v4l2_subdev *sd, + u32 status, bool *handled); + + /* Receiver */ + int (*rx_read)(struct v4l2_subdev *sd, u8 *buf, size_t count, + ssize_t *num); + + int (*rx_g_parameters)(struct v4l2_subdev *sd, + struct v4l2_subdev_ir_parameters *params); + int (*rx_s_parameters)(struct v4l2_subdev *sd, + struct v4l2_subdev_ir_parameters *params); + + /* Transmitter */ + int (*tx_write)(struct v4l2_subdev *sd, u8 *buf, size_t count, + ssize_t *num); + + int (*tx_g_parameters)(struct v4l2_subdev *sd, + struct v4l2_subdev_ir_parameters *params); + int (*tx_s_parameters)(struct v4l2_subdev *sd, + struct v4l2_subdev_ir_parameters *params); +}; + struct v4l2_subdev_ops { const struct v4l2_subdev_core_ops *core; const struct v4l2_subdev_tuner_ops *tuner; const struct v4l2_subdev_audio_ops *audio; const struct v4l2_subdev_video_ops *video; + const struct v4l2_subdev_ir_ops *ir; }; #define V4L2_SUBDEV_NAME_SIZE 32 @@ -290,7 +385,7 @@ static inline void v4l2_subdev_init(struct v4l2_subdev *sd, Example: err = v4l2_subdev_call(sd, core, g_chip_ident, &chip); */ #define v4l2_subdev_call(sd, o, f, args...) \ - (!(sd) ? -ENODEV : (((sd) && (sd)->ops->o && (sd)->ops->o->f) ? \ + (!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \ (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD)) /* Send a notification to v4l2_device. */ |