@@ -23,6 +23,10 @@
#include <media/v4l2-common.h>
+/* generic v4l2_device notify callback notification values */
+#define V4L2_SUBDEV_IR_RX_DATA_READY _IO('v', 0)
+#define V4L2_SUBDEV_IR_TX_READY_FOR_DATA _IO('v', 1)
+
struct v4l2_device;
struct v4l2_subdev;
struct tuner_setup;
@@ -229,11 +233,94 @@
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]_g_parameters: Get the current operating parameters and state of the
+ the IR receiver or transmitter.
+
+ [rt]_s_parameters: Set the current operating parameters and state of the
+ the IR receiver or transmitter. It is recommended to call
+ [rt]_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 */
+};
+
+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*/
+
+ /* 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 */
+ unsigned int duty_cycle_lower; /* percent, valid only for modulated*/
+ unsigned int duty_cycle_upper; /* percent, valid only for modulated*/
+ u32 resolution; /* ns */
+
+ /* Tx only */
+ u32 enabled_transmitters; /* bitmask of enabled transmitter drivers */
+};
+
+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