525 lines
15 KiB
C
525 lines
15 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* include/media/si476x-core.h -- Common definitions for si476x core
|
|
* device
|
|
*
|
|
* Copyright (C) 2012 Innovative Converged Devices(ICD)
|
|
* Copyright (C) 2013 Andrey Smirnov
|
|
*
|
|
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
|
|
*/
|
|
|
|
#ifndef SI476X_CORE_H
|
|
#define SI476X_CORE_H
|
|
|
|
#include <linux/kfifo.h>
|
|
#include <linux/atomic.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/videodev2.h>
|
|
#include <linux/regulator/consumer.h>
|
|
|
|
#include <linux/mfd/si476x-platform.h>
|
|
#include <linux/mfd/si476x-reports.h>
|
|
|
|
/* Command Timeouts */
|
|
#define SI476X_DEFAULT_TIMEOUT 100000
|
|
#define SI476X_TIMEOUT_TUNE 700000
|
|
#define SI476X_TIMEOUT_POWER_UP 330000
|
|
#define SI476X_STATUS_POLL_US 0
|
|
|
|
/* -------------------- si476x-i2c.c ----------------------- */
|
|
|
|
enum si476x_freq_supported_chips {
|
|
SI476X_CHIP_SI4761 = 1,
|
|
SI476X_CHIP_SI4764,
|
|
SI476X_CHIP_SI4768,
|
|
};
|
|
|
|
enum si476x_part_revisions {
|
|
SI476X_REVISION_A10 = 0,
|
|
SI476X_REVISION_A20 = 1,
|
|
SI476X_REVISION_A30 = 2,
|
|
};
|
|
|
|
enum si476x_mfd_cells {
|
|
SI476X_RADIO_CELL = 0,
|
|
SI476X_CODEC_CELL,
|
|
SI476X_MFD_CELLS,
|
|
};
|
|
|
|
/**
|
|
* enum si476x_power_state - possible power state of the si476x
|
|
* device.
|
|
*
|
|
* @SI476X_POWER_DOWN: In this state all regulators are turned off
|
|
* and the reset line is pulled low. The device is completely
|
|
* inactive.
|
|
* @SI476X_POWER_UP_FULL: In this state all the power regualtors are
|
|
* turned on, reset line pulled high, IRQ line is enabled(polling is
|
|
* active for polling use scenario) and device is turned on with
|
|
* POWER_UP command. The device is ready to be used.
|
|
* @SI476X_POWER_INCONSISTENT: This state indicates that previous
|
|
* power down was inconsistent, meaning some of the regulators were
|
|
* not turned down and thus use of the device, without power-cycling
|
|
* is impossible.
|
|
*/
|
|
enum si476x_power_state {
|
|
SI476X_POWER_DOWN = 0,
|
|
SI476X_POWER_UP_FULL = 1,
|
|
SI476X_POWER_INCONSISTENT = 2,
|
|
};
|
|
|
|
/**
|
|
* struct si476x_core - internal data structure representing the
|
|
* underlying "core" device which all the MFD cell-devices use.
|
|
*
|
|
* @client: Actual I2C client used to transfer commands to the chip.
|
|
* @chip_id: Last digit of the chip model(E.g. "1" for SI4761)
|
|
* @cells: MFD cell devices created by this driver.
|
|
* @cmd_lock: Mutex used to serialize all the requests to the core
|
|
* device. This filed should not be used directly. Instead
|
|
* si476x_core_lock()/si476x_core_unlock() should be used to get
|
|
* exclusive access to the "core" device.
|
|
* @users: Active users counter(Used by the radio cell)
|
|
* @rds_read_queue: Wait queue used to wait for RDS data.
|
|
* @rds_fifo: FIFO in which all the RDS data received from the chip is
|
|
* placed.
|
|
* @rds_fifo_drainer: Worker that drains on-chip RDS FIFO.
|
|
* @rds_drainer_is_working: Flag used for launching only one instance
|
|
* of the @rds_fifo_drainer.
|
|
* @rds_drainer_status_lock: Lock used to guard access to the
|
|
* @rds_drainer_is_working variable.
|
|
* @command: Wait queue for wainting on the command comapletion.
|
|
* @cts: Clear To Send flag set upon receiving first status with CTS
|
|
* set.
|
|
* @tuning: Wait queue used for wainting for tune/seek comand
|
|
* completion.
|
|
* @stc: Similar to @cts, but for the STC bit of the status value.
|
|
* @power_up_parameters: Parameters used as argument for POWER_UP
|
|
* command when the device is started.
|
|
* @state: Current power state of the device.
|
|
* @supplues: Structure containing handles to all power supplies used
|
|
* by the device (NULL ones are ignored).
|
|
* @gpio_reset: GPIO pin connectet to the RSTB pin of the chip.
|
|
* @pinmux: Chip's configurable pins configuration.
|
|
* @diversity_mode: Chips role when functioning in diversity mode.
|
|
* @status_monitor: Polling worker used in polling use case scenarion
|
|
* (when IRQ is not avalible).
|
|
* @revision: Chip's running firmware revision number(Used for correct
|
|
* command set support).
|
|
*/
|
|
|
|
struct si476x_core {
|
|
struct i2c_client *client;
|
|
struct regmap *regmap;
|
|
int chip_id;
|
|
struct mfd_cell cells[SI476X_MFD_CELLS];
|
|
|
|
struct mutex cmd_lock; /* for serializing fm radio operations */
|
|
atomic_t users;
|
|
|
|
wait_queue_head_t rds_read_queue;
|
|
struct kfifo rds_fifo;
|
|
struct work_struct rds_fifo_drainer;
|
|
bool rds_drainer_is_working;
|
|
struct mutex rds_drainer_status_lock;
|
|
|
|
wait_queue_head_t command;
|
|
atomic_t cts;
|
|
|
|
wait_queue_head_t tuning;
|
|
atomic_t stc;
|
|
|
|
struct si476x_power_up_args power_up_parameters;
|
|
|
|
enum si476x_power_state power_state;
|
|
|
|
struct regulator_bulk_data supplies[4];
|
|
|
|
int gpio_reset;
|
|
|
|
struct si476x_pinmux pinmux;
|
|
enum si476x_phase_diversity_mode diversity_mode;
|
|
|
|
atomic_t is_alive;
|
|
|
|
struct delayed_work status_monitor;
|
|
#define SI476X_WORK_TO_CORE(w) container_of(to_delayed_work(w), \
|
|
struct si476x_core, \
|
|
status_monitor)
|
|
|
|
int revision;
|
|
|
|
int rds_fifo_depth;
|
|
};
|
|
|
|
static inline struct si476x_core *i2c_mfd_cell_to_core(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev->parent);
|
|
return i2c_get_clientdata(client);
|
|
}
|
|
|
|
|
|
/**
|
|
* si476x_core_lock() - lock the core device to get an exclusive access
|
|
* to it.
|
|
*/
|
|
static inline void si476x_core_lock(struct si476x_core *core)
|
|
{
|
|
mutex_lock(&core->cmd_lock);
|
|
}
|
|
|
|
/**
|
|
* si476x_core_unlock() - unlock the core device to relinquish an
|
|
* exclusive access to it.
|
|
*/
|
|
static inline void si476x_core_unlock(struct si476x_core *core)
|
|
{
|
|
mutex_unlock(&core->cmd_lock);
|
|
}
|
|
|
|
/* *_TUNE_FREQ family of commands accept frequency in multiples of
|
|
10kHz */
|
|
static inline u16 hz_to_si476x(struct si476x_core *core, int freq)
|
|
{
|
|
u16 result;
|
|
|
|
switch (core->power_up_parameters.func) {
|
|
default:
|
|
case SI476X_FUNC_FM_RECEIVER:
|
|
result = freq / 10000;
|
|
break;
|
|
case SI476X_FUNC_AM_RECEIVER:
|
|
result = freq / 1000;
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static inline int si476x_to_hz(struct si476x_core *core, u16 freq)
|
|
{
|
|
int result;
|
|
|
|
switch (core->power_up_parameters.func) {
|
|
default:
|
|
case SI476X_FUNC_FM_RECEIVER:
|
|
result = freq * 10000;
|
|
break;
|
|
case SI476X_FUNC_AM_RECEIVER:
|
|
result = freq * 1000;
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Since the V4L2_TUNER_CAP_LOW flag is supplied, V4L2 subsystem
|
|
* mesures frequency in 62.5 Hz units */
|
|
|
|
static inline int hz_to_v4l2(int freq)
|
|
{
|
|
return (freq * 10) / 625;
|
|
}
|
|
|
|
static inline int v4l2_to_hz(int freq)
|
|
{
|
|
return (freq * 625) / 10;
|
|
}
|
|
|
|
static inline u16 v4l2_to_si476x(struct si476x_core *core, int freq)
|
|
{
|
|
return hz_to_si476x(core, v4l2_to_hz(freq));
|
|
}
|
|
|
|
static inline int si476x_to_v4l2(struct si476x_core *core, u16 freq)
|
|
{
|
|
return hz_to_v4l2(si476x_to_hz(core, freq));
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* struct si476x_func_info - structure containing result of the
|
|
* FUNC_INFO command.
|
|
*
|
|
* @firmware.major: Firmware major number.
|
|
* @firmware.minor[...]: Firmware minor numbers.
|
|
* @patch_id:
|
|
* @func: Mode tuner is working in.
|
|
*/
|
|
struct si476x_func_info {
|
|
struct {
|
|
u8 major, minor[2];
|
|
} firmware;
|
|
u16 patch_id;
|
|
enum si476x_func func;
|
|
};
|
|
|
|
/**
|
|
* struct si476x_power_down_args - structure used to pass parameters
|
|
* to POWER_DOWN command
|
|
*
|
|
* @xosc: true - Power down, but leav oscillator running.
|
|
* false - Full power down.
|
|
*/
|
|
struct si476x_power_down_args {
|
|
bool xosc;
|
|
};
|
|
|
|
/**
|
|
* enum si476x_tunemode - enum representing possible tune modes for
|
|
* the chip.
|
|
* @SI476X_TM_VALIDATED_NORMAL_TUNE: Unconditionally stay on the new
|
|
* channel after tune, tune status is valid.
|
|
* @SI476X_TM_INVALIDATED_FAST_TUNE: Unconditionally stay in the new
|
|
* channel after tune, tune status invalid.
|
|
* @SI476X_TM_VALIDATED_AF_TUNE: Jump back to previous channel if
|
|
* metric thresholds are not met.
|
|
* @SI476X_TM_VALIDATED_AF_CHECK: Unconditionally jump back to the
|
|
* previous channel.
|
|
*/
|
|
enum si476x_tunemode {
|
|
SI476X_TM_VALIDATED_NORMAL_TUNE = 0,
|
|
SI476X_TM_INVALIDATED_FAST_TUNE = 1,
|
|
SI476X_TM_VALIDATED_AF_TUNE = 2,
|
|
SI476X_TM_VALIDATED_AF_CHECK = 3,
|
|
};
|
|
|
|
/**
|
|
* enum si476x_smoothmetrics - enum containing the possible setting fo
|
|
* audio transitioning of the chip
|
|
* @SI476X_SM_INITIALIZE_AUDIO: Initialize audio state to match this
|
|
* new channel
|
|
* @SI476X_SM_TRANSITION_AUDIO: Transition audio state from previous
|
|
* channel values to the new values
|
|
*/
|
|
enum si476x_smoothmetrics {
|
|
SI476X_SM_INITIALIZE_AUDIO = 0,
|
|
SI476X_SM_TRANSITION_AUDIO = 1,
|
|
};
|
|
|
|
/**
|
|
* struct si476x_rds_status_report - the structure representing the
|
|
* response to 'FM_RD_STATUS' command
|
|
* @rdstpptyint: Traffic program flag(TP) and/or program type(PTY)
|
|
* code has changed.
|
|
* @rdspiint: Program identification(PI) code has changed.
|
|
* @rdssyncint: RDS synchronization has changed.
|
|
* @rdsfifoint: RDS was received and the RDS FIFO has at least
|
|
* 'FM_RDS_INTERRUPT_FIFO_COUNT' elements in it.
|
|
* @tpptyvalid: TP flag and PTY code are valid falg.
|
|
* @pivalid: PI code is valid flag.
|
|
* @rdssync: RDS is currently synchronized.
|
|
* @rdsfifolost: On or more RDS groups have been lost/discarded flag.
|
|
* @tp: Current channel's TP flag.
|
|
* @pty: Current channel's PTY code.
|
|
* @pi: Current channel's PI code.
|
|
* @rdsfifoused: Number of blocks remaining in the RDS FIFO (0 if
|
|
* empty).
|
|
*/
|
|
struct si476x_rds_status_report {
|
|
bool rdstpptyint, rdspiint, rdssyncint, rdsfifoint;
|
|
bool tpptyvalid, pivalid, rdssync, rdsfifolost;
|
|
bool tp;
|
|
|
|
u8 pty;
|
|
u16 pi;
|
|
|
|
u8 rdsfifoused;
|
|
u8 ble[4];
|
|
|
|
struct v4l2_rds_data rds[4];
|
|
};
|
|
|
|
struct si476x_rsq_status_args {
|
|
bool primary;
|
|
bool rsqack;
|
|
bool attune;
|
|
bool cancel;
|
|
bool stcack;
|
|
};
|
|
|
|
enum si476x_injside {
|
|
SI476X_INJSIDE_AUTO = 0,
|
|
SI476X_INJSIDE_LOW = 1,
|
|
SI476X_INJSIDE_HIGH = 2,
|
|
};
|
|
|
|
struct si476x_tune_freq_args {
|
|
bool zifsr;
|
|
bool hd;
|
|
enum si476x_injside injside;
|
|
int freq;
|
|
enum si476x_tunemode tunemode;
|
|
enum si476x_smoothmetrics smoothmetrics;
|
|
int antcap;
|
|
};
|
|
|
|
int si476x_core_stop(struct si476x_core *, bool);
|
|
int si476x_core_start(struct si476x_core *, bool);
|
|
int si476x_core_set_power_state(struct si476x_core *, enum si476x_power_state);
|
|
bool si476x_core_has_am(struct si476x_core *);
|
|
bool si476x_core_has_diversity(struct si476x_core *);
|
|
bool si476x_core_is_a_secondary_tuner(struct si476x_core *);
|
|
bool si476x_core_is_a_primary_tuner(struct si476x_core *);
|
|
bool si476x_core_is_in_am_receiver_mode(struct si476x_core *core);
|
|
bool si476x_core_is_powered_up(struct si476x_core *core);
|
|
|
|
enum si476x_i2c_type {
|
|
SI476X_I2C_SEND,
|
|
SI476X_I2C_RECV
|
|
};
|
|
|
|
int si476x_core_i2c_xfer(struct si476x_core *,
|
|
enum si476x_i2c_type,
|
|
char *, int);
|
|
|
|
|
|
/* -------------------- si476x-cmd.c ----------------------- */
|
|
|
|
int si476x_core_cmd_func_info(struct si476x_core *, struct si476x_func_info *);
|
|
int si476x_core_cmd_set_property(struct si476x_core *, u16, u16);
|
|
int si476x_core_cmd_get_property(struct si476x_core *, u16);
|
|
int si476x_core_cmd_dig_audio_pin_cfg(struct si476x_core *,
|
|
enum si476x_dclk_config,
|
|
enum si476x_dfs_config,
|
|
enum si476x_dout_config,
|
|
enum si476x_xout_config);
|
|
int si476x_core_cmd_zif_pin_cfg(struct si476x_core *,
|
|
enum si476x_iqclk_config,
|
|
enum si476x_iqfs_config,
|
|
enum si476x_iout_config,
|
|
enum si476x_qout_config);
|
|
int si476x_core_cmd_ic_link_gpo_ctl_pin_cfg(struct si476x_core *,
|
|
enum si476x_icin_config,
|
|
enum si476x_icip_config,
|
|
enum si476x_icon_config,
|
|
enum si476x_icop_config);
|
|
int si476x_core_cmd_ana_audio_pin_cfg(struct si476x_core *,
|
|
enum si476x_lrout_config);
|
|
int si476x_core_cmd_intb_pin_cfg(struct si476x_core *, enum si476x_intb_config,
|
|
enum si476x_a1_config);
|
|
int si476x_core_cmd_fm_seek_start(struct si476x_core *, bool, bool);
|
|
int si476x_core_cmd_am_seek_start(struct si476x_core *, bool, bool);
|
|
int si476x_core_cmd_fm_rds_status(struct si476x_core *, bool, bool, bool,
|
|
struct si476x_rds_status_report *);
|
|
int si476x_core_cmd_fm_rds_blockcount(struct si476x_core *, bool,
|
|
struct si476x_rds_blockcount_report *);
|
|
int si476x_core_cmd_fm_tune_freq(struct si476x_core *,
|
|
struct si476x_tune_freq_args *);
|
|
int si476x_core_cmd_am_tune_freq(struct si476x_core *,
|
|
struct si476x_tune_freq_args *);
|
|
int si476x_core_cmd_am_rsq_status(struct si476x_core *,
|
|
struct si476x_rsq_status_args *,
|
|
struct si476x_rsq_status_report *);
|
|
int si476x_core_cmd_fm_rsq_status(struct si476x_core *,
|
|
struct si476x_rsq_status_args *,
|
|
struct si476x_rsq_status_report *);
|
|
int si476x_core_cmd_power_up(struct si476x_core *,
|
|
struct si476x_power_up_args *);
|
|
int si476x_core_cmd_power_down(struct si476x_core *,
|
|
struct si476x_power_down_args *);
|
|
int si476x_core_cmd_fm_phase_div_status(struct si476x_core *);
|
|
int si476x_core_cmd_fm_phase_diversity(struct si476x_core *,
|
|
enum si476x_phase_diversity_mode);
|
|
|
|
int si476x_core_cmd_fm_acf_status(struct si476x_core *,
|
|
struct si476x_acf_status_report *);
|
|
int si476x_core_cmd_am_acf_status(struct si476x_core *,
|
|
struct si476x_acf_status_report *);
|
|
int si476x_core_cmd_agc_status(struct si476x_core *,
|
|
struct si476x_agc_status_report *);
|
|
|
|
enum si476x_power_grid_type {
|
|
SI476X_POWER_GRID_50HZ = 0,
|
|
SI476X_POWER_GRID_60HZ,
|
|
};
|
|
|
|
/* Properties */
|
|
|
|
enum si476x_interrupt_flags {
|
|
SI476X_STCIEN = (1 << 0),
|
|
SI476X_ACFIEN = (1 << 1),
|
|
SI476X_RDSIEN = (1 << 2),
|
|
SI476X_RSQIEN = (1 << 3),
|
|
|
|
SI476X_ERRIEN = (1 << 6),
|
|
SI476X_CTSIEN = (1 << 7),
|
|
|
|
SI476X_STCREP = (1 << 8),
|
|
SI476X_ACFREP = (1 << 9),
|
|
SI476X_RDSREP = (1 << 10),
|
|
SI476X_RSQREP = (1 << 11),
|
|
};
|
|
|
|
enum si476x_rdsint_sources {
|
|
SI476X_RDSTPPTY = (1 << 4),
|
|
SI476X_RDSPI = (1 << 3),
|
|
SI476X_RDSSYNC = (1 << 1),
|
|
SI476X_RDSRECV = (1 << 0),
|
|
};
|
|
|
|
enum si476x_status_response_bits {
|
|
SI476X_CTS = (1 << 7),
|
|
SI476X_ERR = (1 << 6),
|
|
/* Status response for WB receiver */
|
|
SI476X_WB_ASQ_INT = (1 << 4),
|
|
SI476X_RSQ_INT = (1 << 3),
|
|
/* Status response for FM receiver */
|
|
SI476X_FM_RDS_INT = (1 << 2),
|
|
SI476X_ACF_INT = (1 << 1),
|
|
SI476X_STC_INT = (1 << 0),
|
|
};
|
|
|
|
/* -------------------- si476x-prop.c ----------------------- */
|
|
|
|
enum si476x_common_receiver_properties {
|
|
SI476X_PROP_INT_CTL_ENABLE = 0x0000,
|
|
SI476X_PROP_DIGITAL_IO_INPUT_SAMPLE_RATE = 0x0200,
|
|
SI476X_PROP_DIGITAL_IO_INPUT_FORMAT = 0x0201,
|
|
SI476X_PROP_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
|
|
SI476X_PROP_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
|
|
|
|
SI476X_PROP_SEEK_BAND_BOTTOM = 0x1100,
|
|
SI476X_PROP_SEEK_BAND_TOP = 0x1101,
|
|
SI476X_PROP_SEEK_FREQUENCY_SPACING = 0x1102,
|
|
|
|
SI476X_PROP_VALID_MAX_TUNE_ERROR = 0x2000,
|
|
SI476X_PROP_VALID_SNR_THRESHOLD = 0x2003,
|
|
SI476X_PROP_VALID_RSSI_THRESHOLD = 0x2004,
|
|
};
|
|
|
|
enum si476x_am_receiver_properties {
|
|
SI476X_PROP_AUDIO_PWR_LINE_FILTER = 0x0303,
|
|
};
|
|
|
|
enum si476x_fm_receiver_properties {
|
|
SI476X_PROP_AUDIO_DEEMPHASIS = 0x0302,
|
|
|
|
SI476X_PROP_FM_RDS_INTERRUPT_SOURCE = 0x4000,
|
|
SI476X_PROP_FM_RDS_INTERRUPT_FIFO_COUNT = 0x4001,
|
|
SI476X_PROP_FM_RDS_CONFIG = 0x4002,
|
|
};
|
|
|
|
enum si476x_prop_audio_pwr_line_filter_bits {
|
|
SI476X_PROP_PWR_HARMONICS_MASK = 0x001f,
|
|
SI476X_PROP_PWR_GRID_MASK = 0x0100,
|
|
SI476X_PROP_PWR_ENABLE_MASK = 0x0200,
|
|
SI476X_PROP_PWR_GRID_50HZ = 0x0000,
|
|
SI476X_PROP_PWR_GRID_60HZ = 0x0100,
|
|
};
|
|
|
|
enum si476x_prop_fm_rds_config_bits {
|
|
SI476X_PROP_RDSEN_MASK = 0x1,
|
|
SI476X_PROP_RDSEN = 0x1,
|
|
};
|
|
|
|
|
|
struct regmap *devm_regmap_init_si476x(struct si476x_core *);
|
|
|
|
#endif /* SI476X_CORE_H */
|