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V4L/DVB (13096): v4l2-subdev: Add v4l2_subdev_ir_ops and IR notify defines for v4l2_device

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Add v4l2_subdev_ir_ops and IR notify defines for v4l2_device.  This change
is specifically needed at this time to support the integrated IR controller in
the CX2388[58] chips.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Andy Walls 2009-09-27 17:50:04 -03:00 committed by Mauro Carvalho Chehab
parent 8c2d7821d4
commit 1d986add96
1 changed files with 94 additions and 0 deletions
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94
include/media/v4l2-subdev.h
View file

@ -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;
@ -231,11 +241,95 @@ 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