// SPDX-License-Identifier: GPL-2.0-only
/*
* drivers / mfd / si476x - cmd . c - - Subroutines implementing command
* protocol of si476x series of chips
*
* Copyright ( C ) 2012 Innovative Converged Devices ( ICD )
* Copyright ( C ) 2013 Andrey Smirnov
*
* Author : Andrey Smirnov < andrew . smirnov @ gmail . com >
*/
#include <linux/module.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/atomic.h>
#include <linux/i2c.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/videodev2.h>
#include <linux/mfd/si476x-core.h>
#include <linux/unaligned.h>
#define msb(x) ((u8)((u16) x >> 8 ))
#define lsb(x) ((u8)((u16) x & 0 x00FF))
#define CMD_POWER_UP 0 x01
#define CMD_POWER_UP_A10_NRESP 1
#define CMD_POWER_UP_A10_NARGS 5
#define CMD_POWER_UP_A20_NRESP 1
#define CMD_POWER_UP_A20_NARGS 5
#define POWER_UP_DELAY_MS 110
#define CMD_POWER_DOWN 0 x11
#define CMD_POWER_DOWN_A10_NRESP 1
#define CMD_POWER_DOWN_A20_NRESP 1
#define CMD_POWER_DOWN_A20_NARGS 1
#define CMD_FUNC_INFO 0 x12
#define CMD_FUNC_INFO_NRESP 7
#define CMD_SET_PROPERTY 0 x13
#define CMD_SET_PROPERTY_NARGS 5
#define CMD_SET_PROPERTY_NRESP 1
#define CMD_GET_PROPERTY 0 x14
#define CMD_GET_PROPERTY_NARGS 3
#define CMD_GET_PROPERTY_NRESP 4
#define CMD_AGC_STATUS 0 x17
#define CMD_AGC_STATUS_NRESP_A10 2
#define CMD_AGC_STATUS_NRESP_A20 6
#define PIN_CFG_BYTE(x) (0 x7F & (x))
#define CMD_DIG_AUDIO_PIN_CFG 0 x18
#define CMD_DIG_AUDIO_PIN_CFG_NARGS 4
#define CMD_DIG_AUDIO_PIN_CFG_NRESP 5
#define CMD_ZIF_PIN_CFG 0 x19
#define CMD_ZIF_PIN_CFG_NARGS 4
#define CMD_ZIF_PIN_CFG_NRESP 5
#define CMD_IC_LINK_GPO_CTL_PIN_CFG 0 x1A
#define CMD_IC_LINK_GPO_CTL_PIN_CFG_NARGS 4
#define CMD_IC_LINK_GPO_CTL_PIN_CFG_NRESP 5
#define CMD_ANA_AUDIO_PIN_CFG 0 x1B
#define CMD_ANA_AUDIO_PIN_CFG_NARGS 1
#define CMD_ANA_AUDIO_PIN_CFG_NRESP 2
#define CMD_INTB_PIN_CFG 0 x1C
#define CMD_INTB_PIN_CFG_NARGS 2
#define CMD_INTB_PIN_CFG_A10_NRESP 6
#define CMD_INTB_PIN_CFG_A20_NRESP 3
#define CMD_FM_TUNE_FREQ 0 x30
#define CMD_FM_TUNE_FREQ_A10_NARGS 5
#define CMD_FM_TUNE_FREQ_A20_NARGS 3
#define CMD_FM_TUNE_FREQ_NRESP 1
#define CMD_FM_RSQ_STATUS 0 x32
#define CMD_FM_RSQ_STATUS_A10_NARGS 1
#define CMD_FM_RSQ_STATUS_A10_NRESP 17
#define CMD_FM_RSQ_STATUS_A30_NARGS 1
#define CMD_FM_RSQ_STATUS_A30_NRESP 23
#define CMD_FM_SEEK_START 0 x31
#define CMD_FM_SEEK_START_NARGS 1
#define CMD_FM_SEEK_START_NRESP 1
#define CMD_FM_RDS_STATUS 0 x36
#define CMD_FM_RDS_STATUS_NARGS 1
#define CMD_FM_RDS_STATUS_NRESP 16
#define CMD_FM_RDS_BLOCKCOUNT 0 x37
#define CMD_FM_RDS_BLOCKCOUNT_NARGS 1
#define CMD_FM_RDS_BLOCKCOUNT_NRESP 8
#define CMD_FM_PHASE_DIVERSITY 0 x38
#define CMD_FM_PHASE_DIVERSITY_NARGS 1
#define CMD_FM_PHASE_DIVERSITY_NRESP 1
#define CMD_FM_PHASE_DIV_STATUS 0 x39
#define CMD_FM_PHASE_DIV_STATUS_NRESP 2
#define CMD_AM_TUNE_FREQ 0 x40
#define CMD_AM_TUNE_FREQ_NARGS 3
#define CMD_AM_TUNE_FREQ_NRESP 1
#define CMD_AM_RSQ_STATUS 0 x42
#define CMD_AM_RSQ_STATUS_NARGS 1
#define CMD_AM_RSQ_STATUS_NRESP 13
#define CMD_AM_SEEK_START 0 x41
#define CMD_AM_SEEK_START_NARGS 1
#define CMD_AM_SEEK_START_NRESP 1
#define CMD_AM_ACF_STATUS 0 x45
#define CMD_AM_ACF_STATUS_NRESP 6
#define CMD_AM_ACF_STATUS_NARGS 1
#define CMD_FM_ACF_STATUS 0 x35
#define CMD_FM_ACF_STATUS_NRESP 8
#define CMD_FM_ACF_STATUS_NARGS 1
#define CMD_MAX_ARGS_COUNT (10 )
enum si476x_acf_status_report_bits {
SI476X_ACF_BLEND_INT = (1 << 4 ),
SI476X_ACF_HIBLEND_INT = (1 << 3 ),
SI476X_ACF_HICUT_INT = (1 << 2 ),
SI476X_ACF_CHBW_INT = (1 << 1 ),
SI476X_ACF_SOFTMUTE_INT = (1 << 0 ),
SI476X_ACF_SMUTE = (1 << 0 ),
SI476X_ACF_SMATTN = 0 x1f,
SI476X_ACF_PILOT = (1 << 7 ),
SI476X_ACF_STBLEND = ~SI476X_ACF_PILOT,
};
enum si476x_agc_status_report_bits {
SI476X_AGC_MXHI = (1 << 5 ),
SI476X_AGC_MXLO = (1 << 4 ),
SI476X_AGC_LNAHI = (1 << 3 ),
SI476X_AGC_LNALO = (1 << 2 ),
};
enum si476x_errors {
SI476X_ERR_BAD_COMMAND = 0 x10,
SI476X_ERR_BAD_ARG1 = 0 x11,
SI476X_ERR_BAD_ARG2 = 0 x12,
SI476X_ERR_BAD_ARG3 = 0 x13,
SI476X_ERR_BAD_ARG4 = 0 x14,
SI476X_ERR_BUSY = 0 x18,
SI476X_ERR_BAD_INTERNAL_MEMORY = 0 x20,
SI476X_ERR_BAD_PATCH = 0 x30,
SI476X_ERR_BAD_BOOT_MODE = 0 x31,
SI476X_ERR_BAD_PROPERTY = 0 x40,
};
static int si476x_core_parse_and_nag_about_error(struct si476x_core *core)
{
int err;
char *cause;
u8 buffer[2 ];
if (core->revision != SI476X_REVISION_A10) {
err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV,
buffer, sizeof (buffer));
if (err == sizeof (buffer)) {
switch (buffer[1 ]) {
case SI476X_ERR_BAD_COMMAND:
cause = "Bad command" ;
err = -EINVAL;
break ;
case SI476X_ERR_BAD_ARG1:
cause = "Bad argument #1" ;
err = -EINVAL;
break ;
case SI476X_ERR_BAD_ARG2:
cause = "Bad argument #2" ;
err = -EINVAL;
break ;
case SI476X_ERR_BAD_ARG3:
cause = "Bad argument #3" ;
err = -EINVAL;
break ;
case SI476X_ERR_BAD_ARG4:
cause = "Bad argument #4" ;
err = -EINVAL;
break ;
case SI476X_ERR_BUSY:
cause = "Chip is busy" ;
err = -EBUSY;
break ;
case SI476X_ERR_BAD_INTERNAL_MEMORY:
cause = "Bad internal memory" ;
err = -EIO;
break ;
case SI476X_ERR_BAD_PATCH:
cause = "Bad patch" ;
err = -EINVAL;
break ;
case SI476X_ERR_BAD_BOOT_MODE:
cause = "Bad boot mode" ;
err = -EINVAL;
break ;
case SI476X_ERR_BAD_PROPERTY:
cause = "Bad property" ;
err = -EINVAL;
break ;
default :
cause = "Unknown" ;
err = -EIO;
}
dev_err(&core->client->dev,
"[Chip error status]: %s\n" , cause);
} else {
dev_err(&core->client->dev,
"Failed to fetch error code\n" );
err = (err >= 0 ) ? -EIO : err;
}
} else {
err = -EIO;
}
return err;
}
/**
* si476x_core_send_command ( ) - sends a command to si476x and waits its
* response
* @ core : si476x_device structure for the device we are
* communicating with
* @ command : command id
* @ args : command arguments we are sending
* @ argn : actual size of @ args
* @ resp : buffer to place the expected response from the device
* @ respn : actual size of @ resp
* @ usecs : amount of time to wait before reading the response ( in
* usecs )
*
* Function returns 0 on success and negative error code on
* failure
*/
static int si476x_core_send_command(struct si476x_core *core,
const u8 command,
const u8 args[],
const int argn,
u8 resp[],
const int respn,
const int usecs)
{
struct i2c_client *client = core->client;
int err;
u8 data[CMD_MAX_ARGS_COUNT + 1 ];
if (argn > CMD_MAX_ARGS_COUNT) {
err = -ENOMEM;
goto exit ;
}
if (!client->adapter) {
err = -ENODEV;
goto exit ;
}
/* First send the command and its arguments */
data[0 ] = command;
memcpy(&data[1 ], args, argn);
dev_dbg(&client->dev, "Command:\n %*ph\n" , argn + 1 , data);
err = si476x_core_i2c_xfer(core, SI476X_I2C_SEND,
(char *) data, argn + 1 );
if (err != argn + 1 ) {
dev_err(&core->client->dev,
"Error while sending command 0x%02x\n" ,
command);
err = (err >= 0 ) ? -EIO : err;
goto exit ;
}
/* Set CTS to zero only after the command is send to avoid
* possible racing conditions when working in polling mode */
atomic_set(&core->cts, 0 );
/* if (unlikely(command == CMD_POWER_DOWN) */
if (!wait_event_timeout(core->command,
atomic_read(&core->cts),
usecs_to_jiffies(usecs) + 1 ))
dev_warn(&core->client->dev,
"(%s) [CMD 0x%02x] Answer timeout.\n" ,
__func__, command);
/*
When working in polling mode , for some reason the tuner will
report CTS bit as being set in the first status byte read ,
but all the consequtive ones will return zeros until the
tuner is actually completed the POWER_UP command . To
workaround that we wait for second CTS to be reported
*/
if (unlikely(!core->client->irq && command == CMD_POWER_UP)) {
if (!wait_event_timeout(core->command,
atomic_read(&core->cts),
usecs_to_jiffies(usecs) + 1 ))
dev_warn(&core->client->dev,
"(%s) Power up took too much time.\n" ,
__func__);
}
/* Then get the response */
err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV, resp, respn);
if (err != respn) {
dev_err(&core->client->dev,
"Error while reading response for command 0x%02x\n" ,
command);
err = (err >= 0 ) ? -EIO : err;
goto exit ;
}
dev_dbg(&client->dev, "Response:\n %*ph\n" , respn, resp);
err = 0 ;
if (resp[0 ] & SI476X_ERR) {
dev_err(&core->client->dev,
"[CMD 0x%02x] Chip set error flag\n" , command);
err = si476x_core_parse_and_nag_about_error(core);
goto exit ;
}
if (!(resp[0 ] & SI476X_CTS))
err = -EBUSY;
exit :
return err;
}
static int si476x_cmd_clear_stc(struct si476x_core *core)
{
int err;
struct si476x_rsq_status_args args = {
.primary = false ,
.rsqack = false ,
.attune = false ,
.cancel = false ,
.stcack = true ,
};
switch (core->power_up_parameters.func) {
case SI476X_FUNC_FM_RECEIVER:
err = si476x_core_cmd_fm_rsq_status(core, &args, NULL);
break ;
case SI476X_FUNC_AM_RECEIVER:
err = si476x_core_cmd_am_rsq_status(core, &args, NULL);
break ;
default :
err = -EINVAL;
}
return err;
}
static int si476x_cmd_tune_seek_freq(struct si476x_core *core,
uint8_t cmd,
const uint8_t args[], size_t argn,
uint8_t *resp, size_t respn)
{
int err;
atomic_set(&core->stc, 0 );
err = si476x_core_send_command(core, cmd, args, argn, resp, respn,
SI476X_TIMEOUT_TUNE);
if (!err) {
wait_event_killable(core->tuning,
atomic_read(&core->stc));
si476x_cmd_clear_stc(core);
}
return err;
}
/**
* si476x_core_cmd_func_info ( ) - send ' FUNC_INFO ' command to the device
* @ core : device to send the command to
* @ info : struct si476x_func_info to fill all the information
* returned by the command
*
* The command requests the firmware and patch version for currently
* loaded firmware ( dependent on the function of the device FM / AM / WB )
*
* Function returns 0 on success and negative error code on
* failure
*/
int si476x_core_cmd_func_info(struct si476x_core *core,
struct si476x_func_info *info)
{
int err;
u8 resp[CMD_FUNC_INFO_NRESP];
err = si476x_core_send_command(core, CMD_FUNC_INFO,
NULL, 0 ,
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
info->firmware.major = resp[1 ];
info->firmware.minor[0 ] = resp[2 ];
info->firmware.minor[1 ] = resp[3 ];
info->patch_id = ((u16) resp[4 ] << 8 ) | resp[5 ];
info->func = resp[6 ];
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_func_info);
/**
* si476x_core_cmd_set_property ( ) - send ' SET_PROPERTY ' command to the device
* @ core : device to send the command to
* @ property : property address
* @ value : property value
*
* Function returns 0 on success and negative error code on
* failure
*/
int si476x_core_cmd_set_property(struct si476x_core *core,
u16 property, u16 value)
{
u8 resp[CMD_SET_PROPERTY_NRESP];
const u8 args[CMD_SET_PROPERTY_NARGS] = {
0 x00,
msb(property),
lsb(property),
msb(value),
lsb(value),
};
return si476x_core_send_command(core, CMD_SET_PROPERTY,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_set_property);
/**
* si476x_core_cmd_get_property ( ) - send ' GET_PROPERTY ' command to the device
* @ core : device to send the command to
* @ property : property address
*
* Function return the value of property as u16 on success or a
* negative error on failure
*/
int si476x_core_cmd_get_property(struct si476x_core *core, u16 property)
{
int err;
u8 resp[CMD_GET_PROPERTY_NRESP];
const u8 args[CMD_GET_PROPERTY_NARGS] = {
0 x00,
msb(property),
lsb(property),
};
err = si476x_core_send_command(core, CMD_GET_PROPERTY,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
if (err < 0 )
return err;
else
return get_unaligned_be16(resp + 2 );
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_get_property);
/**
* si476x_core_cmd_dig_audio_pin_cfg ( ) - send ' DIG_AUDIO_PIN_CFG ' command to
* the device
* @ core : device to send the command to
* @ dclk : DCLK pin function configuration :
* # SI476X_DCLK_NOOP - do not modify the behaviour
* # SI476X_DCLK_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* # SI476X_DCLK_DAUDIO - set the pin to be a part of digital
* audio interface
* @ dfs : DFS pin function configuration :
* # SI476X_DFS_NOOP - do not modify the behaviour
* # SI476X_DFS_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_DFS_DAUDIO - set the pin to be a part of digital
* audio interface
* @ dout : - DOUT pin function configuration :
* SI476X_DOUT_NOOP - do not modify the behaviour
* SI476X_DOUT_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_DOUT_I2S_OUTPUT - set this pin to be digital out on I2S
* port 1
* SI476X_DOUT_I2S_INPUT - set this pin to be digital in on I2S
* port 1
* @ xout : - XOUT pin function configuration :
* SI476X_XOUT_NOOP - do not modify the behaviour
* SI476X_XOUT_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_XOUT_I2S_INPUT - set this pin to be digital in on I2S
* port 1
* SI476X_XOUT_MODE_SELECT - set this pin to be the input that
* selects the mode of the I2S audio
* combiner ( analog or HD )
* [ SI4761 / 63 / 65 / 67 Only ]
*
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_dig_audio_pin_cfg(struct si476x_core *core,
enum si476x_dclk_config dclk,
enum si476x_dfs_config dfs,
enum si476x_dout_config dout,
enum si476x_xout_config xout)
{
u8 resp[CMD_DIG_AUDIO_PIN_CFG_NRESP];
const u8 args[CMD_DIG_AUDIO_PIN_CFG_NARGS] = {
PIN_CFG_BYTE(dclk),
PIN_CFG_BYTE(dfs),
PIN_CFG_BYTE(dout),
PIN_CFG_BYTE(xout),
};
return si476x_core_send_command(core, CMD_DIG_AUDIO_PIN_CFG,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_dig_audio_pin_cfg);
/**
* si476x_core_cmd_zif_pin_cfg - send ' ZIF_PIN_CFG_COMMAND '
* @ core : - device to send the command to
* @ iqclk : - IQCL pin function configuration :
* SI476X_IQCLK_NOOP - do not modify the behaviour
* SI476X_IQCLK_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_IQCLK_IQ - set pin to be a part of I / Q interface
* in master mode
* @ iqfs : - IQFS pin function configuration :
* SI476X_IQFS_NOOP - do not modify the behaviour
* SI476X_IQFS_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_IQFS_IQ - set pin to be a part of I / Q interface
* in master mode
* @ iout : - IOUT pin function configuration :
* SI476X_IOUT_NOOP - do not modify the behaviour
* SI476X_IOUT_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_IOUT_OUTPUT - set pin to be I out
* @ qout : - QOUT pin function configuration :
* SI476X_QOUT_NOOP - do not modify the behaviour
* SI476X_QOUT_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_QOUT_OUTPUT - set pin to be Q out
*
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_zif_pin_cfg(struct si476x_core *core,
enum si476x_iqclk_config iqclk,
enum si476x_iqfs_config iqfs,
enum si476x_iout_config iout,
enum si476x_qout_config qout)
{
u8 resp[CMD_ZIF_PIN_CFG_NRESP];
const u8 args[CMD_ZIF_PIN_CFG_NARGS] = {
PIN_CFG_BYTE(iqclk),
PIN_CFG_BYTE(iqfs),
PIN_CFG_BYTE(iout),
PIN_CFG_BYTE(qout),
};
return si476x_core_send_command(core, CMD_ZIF_PIN_CFG,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_zif_pin_cfg);
/**
* si476x_core_cmd_ic_link_gpo_ctl_pin_cfg - send
* ' IC_LINK_GPIO_CTL_PIN_CFG ' command to the device
* @ core : - device to send the command to
* @ icin : - ICIN pin function configuration :
* SI476X_ICIN_NOOP - do not modify the behaviour
* SI476X_ICIN_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_ICIN_GPO1_HIGH - set pin to be an output , drive it high
* SI476X_ICIN_GPO1_LOW - set pin to be an output , drive it low
* SI476X_ICIN_IC_LINK - set the pin to be a part of Inter - Chip link
* @ icip : - ICIP pin function configuration :
* SI476X_ICIP_NOOP - do not modify the behaviour
* SI476X_ICIP_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_ICIP_GPO1_HIGH - set pin to be an output , drive it high
* SI476X_ICIP_GPO1_LOW - set pin to be an output , drive it low
* SI476X_ICIP_IC_LINK - set the pin to be a part of Inter - Chip link
* @ icon : - ICON pin function configuration :
* SI476X_ICON_NOOP - do not modify the behaviour
* SI476X_ICON_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_ICON_I2S - set the pin to be a part of audio
* interface in slave mode ( DCLK )
* SI476X_ICON_IC_LINK - set the pin to be a part of Inter - Chip link
* @ icop : - ICOP pin function configuration :
* SI476X_ICOP_NOOP - do not modify the behaviour
* SI476X_ICOP_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_ICOP_I2S - set the pin to be a part of audio
* interface in slave mode ( DOUT )
* [ Si4761 / 63 / 65 / 67 Only ]
* SI476X_ICOP_IC_LINK - set the pin to be a part of Inter - Chip link
*
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_ic_link_gpo_ctl_pin_cfg(struct si476x_core *core,
enum si476x_icin_config icin,
enum si476x_icip_config icip,
enum si476x_icon_config icon,
enum si476x_icop_config icop)
{
u8 resp[CMD_IC_LINK_GPO_CTL_PIN_CFG_NRESP];
const u8 args[CMD_IC_LINK_GPO_CTL_PIN_CFG_NARGS] = {
PIN_CFG_BYTE(icin),
PIN_CFG_BYTE(icip),
PIN_CFG_BYTE(icon),
PIN_CFG_BYTE(icop),
};
return si476x_core_send_command(core, CMD_IC_LINK_GPO_CTL_PIN_CFG,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_ic_link_gpo_ctl_pin_cfg);
/**
* si476x_core_cmd_ana_audio_pin_cfg - send ' ANA_AUDIO_PIN_CFG ' to the
* device
* @ core : - device to send the command to
* @ lrout : - LROUT pin function configuration :
* SI476X_LROUT_NOOP - do not modify the behaviour
* SI476X_LROUT_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_LROUT_AUDIO - set pin to be audio output
* SI476X_LROUT_MPX - set pin to be MPX output
*
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_ana_audio_pin_cfg(struct si476x_core *core,
enum si476x_lrout_config lrout)
{
u8 resp[CMD_ANA_AUDIO_PIN_CFG_NRESP];
const u8 args[CMD_ANA_AUDIO_PIN_CFG_NARGS] = {
PIN_CFG_BYTE(lrout),
};
return si476x_core_send_command(core, CMD_ANA_AUDIO_PIN_CFG,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_ana_audio_pin_cfg);
/**
* si476x_core_cmd_intb_pin_cfg_a10 - send ' INTB_PIN_CFG ' command to the device
* @ core : - device to send the command to
* @ intb : - INTB pin function configuration :
* SI476X_INTB_NOOP - do not modify the behaviour
* SI476X_INTB_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_INTB_DAUDIO - set pin to be a part of digital
* audio interface in slave mode
* SI476X_INTB_IRQ - set pin to be an interrupt request line
* @ a1 : - A1 pin function configuration :
* SI476X_A1_NOOP - do not modify the behaviour
* SI476X_A1_TRISTATE - put the pin in tristate condition ,
* enable 1 MOhm pulldown
* SI476X_A1_IRQ - set pin to be an interrupt request line
*
* Function returns 0 on success and negative error code on failure
*/
static int si476x_core_cmd_intb_pin_cfg_a10(struct si476x_core *core,
enum si476x_intb_config intb,
enum si476x_a1_config a1)
{
u8 resp[CMD_INTB_PIN_CFG_A10_NRESP];
const u8 args[CMD_INTB_PIN_CFG_NARGS] = {
PIN_CFG_BYTE(intb),
PIN_CFG_BYTE(a1),
};
return si476x_core_send_command(core, CMD_INTB_PIN_CFG,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
static int si476x_core_cmd_intb_pin_cfg_a20(struct si476x_core *core,
enum si476x_intb_config intb,
enum si476x_a1_config a1)
{
u8 resp[CMD_INTB_PIN_CFG_A20_NRESP];
const u8 args[CMD_INTB_PIN_CFG_NARGS] = {
PIN_CFG_BYTE(intb),
PIN_CFG_BYTE(a1),
};
return si476x_core_send_command(core, CMD_INTB_PIN_CFG,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
/**
* si476x_core_cmd_am_rsq_status - send ' AM_RSQ_STATUS ' command to the
* device
* @ core : - device to send the command to
* @ rsqargs : - pointer to a structure containing a group of sub - args
* relevant to sending the RSQ status command
* @ report : - all signal quality information returned by the command
* ( if NULL then the output of the command is ignored )
*
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_am_rsq_status(struct si476x_core *core,
struct si476x_rsq_status_args *rsqargs,
struct si476x_rsq_status_report *report)
{
int err;
u8 resp[CMD_AM_RSQ_STATUS_NRESP];
const u8 args[CMD_AM_RSQ_STATUS_NARGS] = {
rsqargs->rsqack << 3 | rsqargs->attune << 2 |
rsqargs->cancel << 1 | rsqargs->stcack,
};
err = si476x_core_send_command(core, CMD_AM_RSQ_STATUS,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
/*
* Besides getting received signal quality information this
* command can be used to just acknowledge different interrupt
* flags in those cases it is useless to copy and parse
* received data so user can pass NULL , and thus avoid
* unnecessary copying .
*/
if (!report)
return err;
report->snrhint = 0 x08 & resp[1 ];
report->snrlint = 0 x04 & resp[1 ];
report->rssihint = 0 x02 & resp[1 ];
report->rssilint = 0 x01 & resp[1 ];
report->bltf = 0 x80 & resp[2 ];
report->snr_ready = 0 x20 & resp[2 ];
report->rssiready = 0 x08 & resp[2 ];
report->afcrl = 0 x02 & resp[2 ];
report->valid = 0 x01 & resp[2 ];
report->readfreq = get_unaligned_be16(resp + 3 );
report->freqoff = resp[5 ];
report->rssi = resp[6 ];
report->snr = resp[7 ];
report->lassi = resp[9 ];
report->hassi = resp[10 ];
report->mult = resp[11 ];
report->dev = resp[12 ];
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_am_rsq_status);
int si476x_core_cmd_fm_acf_status(struct si476x_core *core,
struct si476x_acf_status_report *report)
{
int err;
u8 resp[CMD_FM_ACF_STATUS_NRESP];
const u8 args[CMD_FM_ACF_STATUS_NARGS] = {
0 x0,
};
if (!report)
return -EINVAL;
err = si476x_core_send_command(core, CMD_FM_ACF_STATUS,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
if (err < 0 )
return err;
report->blend_int = resp[1 ] & SI476X_ACF_BLEND_INT;
report->hblend_int = resp[1 ] & SI476X_ACF_HIBLEND_INT;
report->hicut_int = resp[1 ] & SI476X_ACF_HICUT_INT;
report->chbw_int = resp[1 ] & SI476X_ACF_CHBW_INT;
report->softmute_int = resp[1 ] & SI476X_ACF_SOFTMUTE_INT;
report->smute = resp[2 ] & SI476X_ACF_SMUTE;
report->smattn = resp[3 ] & SI476X_ACF_SMATTN;
report->chbw = resp[4 ];
report->hicut = resp[5 ];
report->hiblend = resp[6 ];
report->pilot = resp[7 ] & SI476X_ACF_PILOT;
report->stblend = resp[7 ] & SI476X_ACF_STBLEND;
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_acf_status);
int si476x_core_cmd_am_acf_status(struct si476x_core *core,
struct si476x_acf_status_report *report)
{
int err;
u8 resp[CMD_AM_ACF_STATUS_NRESP];
const u8 args[CMD_AM_ACF_STATUS_NARGS] = {
0 x0,
};
if (!report)
return -EINVAL;
err = si476x_core_send_command(core, CMD_AM_ACF_STATUS,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
if (err < 0 )
return err;
report->blend_int = resp[1 ] & SI476X_ACF_BLEND_INT;
report->hblend_int = resp[1 ] & SI476X_ACF_HIBLEND_INT;
report->hicut_int = resp[1 ] & SI476X_ACF_HICUT_INT;
report->chbw_int = resp[1 ] & SI476X_ACF_CHBW_INT;
report->softmute_int = resp[1 ] & SI476X_ACF_SOFTMUTE_INT;
report->smute = resp[2 ] & SI476X_ACF_SMUTE;
report->smattn = resp[3 ] & SI476X_ACF_SMATTN;
report->chbw = resp[4 ];
report->hicut = resp[5 ];
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_am_acf_status);
/**
* si476x_core_cmd_fm_seek_start - send ' FM_SEEK_START ' command to the
* device
* @ core : - device to send the command to
* @ seekup : - if set the direction of the search is ' up '
* @ wrap : - if set seek wraps when hitting band limit
*
* This function begins search for a valid station . The station is
* considered valid when ' FM_VALID_SNR_THRESHOLD ' and
* ' FM_VALID_RSSI_THRESHOLD ' and ' FM_VALID_MAX_TUNE_ERROR ' criteria
* are met .
} *
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_fm_seek_start(struct si476x_core *core,
bool seekup, bool wrap)
{
u8 resp[CMD_FM_SEEK_START_NRESP];
const u8 args[CMD_FM_SEEK_START_NARGS] = {
seekup << 3 | wrap << 2 ,
};
return si476x_cmd_tune_seek_freq(core, CMD_FM_SEEK_START,
args, sizeof (args),
resp, sizeof (resp));
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_seek_start);
/**
* si476x_core_cmd_fm_rds_status - send ' FM_RDS_STATUS ' command to the
* device
* @ core : - device to send the command to
* @ status_only : - if set the data is not removed from RDSFIFO ,
* RDSFIFOUSED is not decremented and data in all the
* rest RDS data contains the last valid info received
* @ mtfifo : if set the command clears RDS receive FIFO
* @ intack : if set the command clards the RDSINT bit .
* @ report : - all signal quality information returned by the command
* ( if NULL then the output of the command is ignored )
*
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_fm_rds_status(struct si476x_core *core,
bool status_only,
bool mtfifo,
bool intack,
struct si476x_rds_status_report *report)
{
int err;
u8 resp[CMD_FM_RDS_STATUS_NRESP];
const u8 args[CMD_FM_RDS_STATUS_NARGS] = {
status_only << 2 | mtfifo << 1 | intack,
};
err = si476x_core_send_command(core, CMD_FM_RDS_STATUS,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
/*
* Besides getting RDS status information this command can be
* used to just acknowledge different interrupt flags in those
* cases it is useless to copy and parse received data so user
* can pass NULL , and thus avoid unnecessary copying .
*/
if (err < 0 || report == NULL)
return err;
report->rdstpptyint = 0 x10 & resp[1 ];
report->rdspiint = 0 x08 & resp[1 ];
report->rdssyncint = 0 x02 & resp[1 ];
report->rdsfifoint = 0 x01 & resp[1 ];
report->tpptyvalid = 0 x10 & resp[2 ];
report->pivalid = 0 x08 & resp[2 ];
report->rdssync = 0 x02 & resp[2 ];
report->rdsfifolost = 0 x01 & resp[2 ];
report->tp = 0 x20 & resp[3 ];
report->pty = 0 x1f & resp[3 ];
report->pi = get_unaligned_be16(resp + 4 );
report->rdsfifoused = resp[6 ];
report->ble[V4L2_RDS_BLOCK_A] = 0 xc0 & resp[7 ];
report->ble[V4L2_RDS_BLOCK_B] = 0 x30 & resp[7 ];
report->ble[V4L2_RDS_BLOCK_C] = 0 x0c & resp[7 ];
report->ble[V4L2_RDS_BLOCK_D] = 0 x03 & resp[7 ];
report->rds[V4L2_RDS_BLOCK_A].block = V4L2_RDS_BLOCK_A;
report->rds[V4L2_RDS_BLOCK_A].msb = resp[8 ];
report->rds[V4L2_RDS_BLOCK_A].lsb = resp[9 ];
report->rds[V4L2_RDS_BLOCK_B].block = V4L2_RDS_BLOCK_B;
report->rds[V4L2_RDS_BLOCK_B].msb = resp[10 ];
report->rds[V4L2_RDS_BLOCK_B].lsb = resp[11 ];
report->rds[V4L2_RDS_BLOCK_C].block = V4L2_RDS_BLOCK_C;
report->rds[V4L2_RDS_BLOCK_C].msb = resp[12 ];
report->rds[V4L2_RDS_BLOCK_C].lsb = resp[13 ];
report->rds[V4L2_RDS_BLOCK_D].block = V4L2_RDS_BLOCK_D;
report->rds[V4L2_RDS_BLOCK_D].msb = resp[14 ];
report->rds[V4L2_RDS_BLOCK_D].lsb = resp[15 ];
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rds_status);
int si476x_core_cmd_fm_rds_blockcount(struct si476x_core *core,
bool clear,
struct si476x_rds_blockcount_report *report)
{
int err;
u8 resp[CMD_FM_RDS_BLOCKCOUNT_NRESP];
const u8 args[CMD_FM_RDS_BLOCKCOUNT_NARGS] = {
clear,
};
if (!report)
return -EINVAL;
err = si476x_core_send_command(core, CMD_FM_RDS_BLOCKCOUNT,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
if (!err) {
report->expected = get_unaligned_be16(resp + 2 );
report->received = get_unaligned_be16(resp + 4 );
report->uncorrectable = get_unaligned_be16(resp + 6 );
}
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rds_blockcount);
int si476x_core_cmd_fm_phase_diversity(struct si476x_core *core,
enum si476x_phase_diversity_mode mode)
{
u8 resp[CMD_FM_PHASE_DIVERSITY_NRESP];
const u8 args[CMD_FM_PHASE_DIVERSITY_NARGS] = {
mode & 0 x07,
};
return si476x_core_send_command(core, CMD_FM_PHASE_DIVERSITY,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_phase_diversity);
/**
* si476x_core_cmd_fm_phase_div_status ( ) - get the phase diversity
* status
*
* @ core : si476x device
*
* NOTE caller must hold core lock
*
* Function returns the value of the status bit in case of success and
* negative error code in case of failure .
*/
int si476x_core_cmd_fm_phase_div_status(struct si476x_core *core)
{
int err;
u8 resp[CMD_FM_PHASE_DIV_STATUS_NRESP];
err = si476x_core_send_command(core, CMD_FM_PHASE_DIV_STATUS,
NULL, 0 ,
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
return (err < 0 ) ? err : resp[1 ];
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_phase_div_status);
/**
* si476x_core_cmd_am_seek_start - send ' FM_SEEK_START ' command to the
* device
* @ core : - device to send the command to
* @ seekup : - if set the direction of the search is ' up '
* @ wrap : - if set seek wraps when hitting band limit
*
* This function begins search for a valid station . The station is
* considered valid when ' FM_VALID_SNR_THRESHOLD ' and
* ' FM_VALID_RSSI_THRESHOLD ' and ' FM_VALID_MAX_TUNE_ERROR ' criteria
* are met .
*
* Function returns 0 on success and negative error code on failure
*/
int si476x_core_cmd_am_seek_start(struct si476x_core *core,
bool seekup, bool wrap)
{
u8 resp[CMD_AM_SEEK_START_NRESP];
const u8 args[CMD_AM_SEEK_START_NARGS] = {
seekup << 3 | wrap << 2 ,
};
return si476x_cmd_tune_seek_freq(core, CMD_AM_SEEK_START,
args, sizeof (args),
resp, sizeof (resp));
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_am_seek_start);
static int si476x_core_cmd_power_up_a10(struct si476x_core *core,
struct si476x_power_up_args *puargs)
{
u8 resp[CMD_POWER_UP_A10_NRESP];
const bool intsel = (core->pinmux.a1 == SI476X_A1_IRQ);
const bool ctsen = (core->client->irq != 0 );
const u8 args[CMD_POWER_UP_A10_NARGS] = {
0 xF7, /* Reserved, always 0xF7 */
0 x3F & puargs->xcload, /* First two bits are reserved to be
* zeros */
ctsen << 7 | intsel << 6 | 0 x07, /* Last five bits
* are reserved to
* be written as 0x7 */
puargs->func << 4 | puargs->freq,
0 x11, /* Reserved, always 0x11 */
};
return si476x_core_send_command(core, CMD_POWER_UP,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_TIMEOUT_POWER_UP);
}
static int si476x_core_cmd_power_up_a20(struct si476x_core *core,
struct si476x_power_up_args *puargs)
{
u8 resp[CMD_POWER_UP_A20_NRESP];
const bool intsel = (core->pinmux.a1 == SI476X_A1_IRQ);
const bool ctsen = (core->client->irq != 0 );
const u8 args[CMD_POWER_UP_A20_NARGS] = {
puargs->ibias6x << 7 | puargs->xstart,
0 x3F & puargs->xcload, /* First two bits are reserved to be
* zeros */
ctsen << 7 | intsel << 6 | puargs->fastboot << 5 |
puargs->xbiashc << 3 | puargs->xbias,
puargs->func << 4 | puargs->freq,
0 x10 | puargs->xmode,
};
return si476x_core_send_command(core, CMD_POWER_UP,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_TIMEOUT_POWER_UP);
}
static int si476x_core_cmd_power_down_a10(struct si476x_core *core,
struct si476x_power_down_args *pdargs)
{
u8 resp[CMD_POWER_DOWN_A10_NRESP];
return si476x_core_send_command(core, CMD_POWER_DOWN,
NULL, 0 ,
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
static int si476x_core_cmd_power_down_a20(struct si476x_core *core,
struct si476x_power_down_args *pdargs)
{
u8 resp[CMD_POWER_DOWN_A20_NRESP];
const u8 args[CMD_POWER_DOWN_A20_NARGS] = {
pdargs->xosc,
};
return si476x_core_send_command(core, CMD_POWER_DOWN,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
}
static int si476x_core_cmd_am_tune_freq_a10(struct si476x_core *core,
struct si476x_tune_freq_args *tuneargs)
{
const int am_freq = tuneargs->freq;
u8 resp[CMD_AM_TUNE_FREQ_NRESP];
const u8 args[CMD_AM_TUNE_FREQ_NARGS] = {
(tuneargs->hd << 6 ),
msb(am_freq),
lsb(am_freq),
};
return si476x_cmd_tune_seek_freq(core, CMD_AM_TUNE_FREQ, args,
sizeof (args),
resp, sizeof (resp));
}
static int si476x_core_cmd_am_tune_freq_a20(struct si476x_core *core,
struct si476x_tune_freq_args *tuneargs)
{
const int am_freq = tuneargs->freq;
u8 resp[CMD_AM_TUNE_FREQ_NRESP];
const u8 args[CMD_AM_TUNE_FREQ_NARGS] = {
(tuneargs->zifsr << 6 ) | (tuneargs->injside & 0 x03),
msb(am_freq),
lsb(am_freq),
};
return si476x_cmd_tune_seek_freq(core, CMD_AM_TUNE_FREQ,
args, sizeof (args),
resp, sizeof (resp));
}
static int si476x_core_cmd_fm_rsq_status_a10(struct si476x_core *core,
struct si476x_rsq_status_args *rsqargs,
struct si476x_rsq_status_report *report)
{
int err;
u8 resp[CMD_FM_RSQ_STATUS_A10_NRESP];
const u8 args[CMD_FM_RSQ_STATUS_A10_NARGS] = {
rsqargs->rsqack << 3 | rsqargs->attune << 2 |
rsqargs->cancel << 1 | rsqargs->stcack,
};
err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
/*
* Besides getting received signal quality information this
* command can be used to just acknowledge different interrupt
* flags in those cases it is useless to copy and parse
* received data so user can pass NULL , and thus avoid
* unnecessary copying .
*/
if (err < 0 || report == NULL)
return err;
report->multhint = 0 x80 & resp[1 ];
report->multlint = 0 x40 & resp[1 ];
report->snrhint = 0 x08 & resp[1 ];
report->snrlint = 0 x04 & resp[1 ];
report->rssihint = 0 x02 & resp[1 ];
report->rssilint = 0 x01 & resp[1 ];
report->bltf = 0 x80 & resp[2 ];
report->snr_ready = 0 x20 & resp[2 ];
report->rssiready = 0 x08 & resp[2 ];
report->afcrl = 0 x02 & resp[2 ];
report->valid = 0 x01 & resp[2 ];
report->readfreq = get_unaligned_be16(resp + 3 );
report->freqoff = resp[5 ];
report->rssi = resp[6 ];
report->snr = resp[7 ];
report->lassi = resp[9 ];
report->hassi = resp[10 ];
report->mult = resp[11 ];
report->dev = resp[12 ];
report->readantcap = get_unaligned_be16(resp + 13 );
report->assi = resp[15 ];
report->usn = resp[16 ];
return err;
}
static int si476x_core_cmd_fm_rsq_status_a20(struct si476x_core *core,
struct si476x_rsq_status_args *rsqargs,
struct si476x_rsq_status_report *report)
{
int err;
u8 resp[CMD_FM_RSQ_STATUS_A10_NRESP];
const u8 args[CMD_FM_RSQ_STATUS_A30_NARGS] = {
rsqargs->primary << 4 | rsqargs->rsqack << 3 |
rsqargs->attune << 2 | rsqargs->cancel << 1 |
rsqargs->stcack,
};
err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
/*
* Besides getting received signal quality information this
* command can be used to just acknowledge different interrupt
* flags in those cases it is useless to copy and parse
* received data so user can pass NULL , and thus avoid
* unnecessary copying .
*/
if (err < 0 || report == NULL)
return err;
report->multhint = 0 x80 & resp[1 ];
report->multlint = 0 x40 & resp[1 ];
report->snrhint = 0 x08 & resp[1 ];
report->snrlint = 0 x04 & resp[1 ];
report->rssihint = 0 x02 & resp[1 ];
report->rssilint = 0 x01 & resp[1 ];
report->bltf = 0 x80 & resp[2 ];
report->snr_ready = 0 x20 & resp[2 ];
report->rssiready = 0 x08 & resp[2 ];
report->afcrl = 0 x02 & resp[2 ];
report->valid = 0 x01 & resp[2 ];
report->readfreq = get_unaligned_be16(resp + 3 );
report->freqoff = resp[5 ];
report->rssi = resp[6 ];
report->snr = resp[7 ];
report->lassi = resp[9 ];
report->hassi = resp[10 ];
report->mult = resp[11 ];
report->dev = resp[12 ];
report->readantcap = get_unaligned_be16(resp + 13 );
report->assi = resp[15 ];
report->usn = resp[16 ];
return err;
}
static int si476x_core_cmd_fm_rsq_status_a30(struct si476x_core *core,
struct si476x_rsq_status_args *rsqargs,
struct si476x_rsq_status_report *report)
{
int err;
u8 resp[CMD_FM_RSQ_STATUS_A30_NRESP];
const u8 args[CMD_FM_RSQ_STATUS_A30_NARGS] = {
rsqargs->primary << 4 | rsqargs->rsqack << 3 |
rsqargs->attune << 2 | rsqargs->cancel << 1 |
rsqargs->stcack,
};
err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
/*
* Besides getting received signal quality information this
* command can be used to just acknowledge different interrupt
* flags in those cases it is useless to copy and parse
* received data so user can pass NULL , and thus avoid
* unnecessary copying .
*/
if (err < 0 || report == NULL)
return err;
report->multhint = 0 x80 & resp[1 ];
report->multlint = 0 x40 & resp[1 ];
report->snrhint = 0 x08 & resp[1 ];
report->snrlint = 0 x04 & resp[1 ];
report->rssihint = 0 x02 & resp[1 ];
report->rssilint = 0 x01 & resp[1 ];
report->bltf = 0 x80 & resp[2 ];
report->snr_ready = 0 x20 & resp[2 ];
report->rssiready = 0 x08 & resp[2 ];
report->injside = 0 x04 & resp[2 ];
report->afcrl = 0 x02 & resp[2 ];
report->valid = 0 x01 & resp[2 ];
report->readfreq = get_unaligned_be16(resp + 3 );
report->freqoff = resp[5 ];
report->rssi = resp[6 ];
report->snr = resp[7 ];
report->issi = resp[8 ];
report->lassi = resp[9 ];
report->hassi = resp[10 ];
report->mult = resp[11 ];
report->dev = resp[12 ];
report->readantcap = get_unaligned_be16(resp + 13 );
report->assi = resp[15 ];
report->usn = resp[16 ];
report->pilotdev = resp[17 ];
report->rdsdev = resp[18 ];
report->assidev = resp[19 ];
report->strongdev = resp[20 ];
report->rdspi = get_unaligned_be16(resp + 21 );
return err;
}
static int si476x_core_cmd_fm_tune_freq_a10(struct si476x_core *core,
struct si476x_tune_freq_args *tuneargs)
{
u8 resp[CMD_FM_TUNE_FREQ_NRESP];
const u8 args[CMD_FM_TUNE_FREQ_A10_NARGS] = {
(tuneargs->hd << 6 ) | (tuneargs->tunemode << 4 )
| (tuneargs->smoothmetrics << 2 ),
msb(tuneargs->freq),
lsb(tuneargs->freq),
msb(tuneargs->antcap),
lsb(tuneargs->antcap)
};
return si476x_cmd_tune_seek_freq(core, CMD_FM_TUNE_FREQ,
args, sizeof (args),
resp, sizeof (resp));
}
static int si476x_core_cmd_fm_tune_freq_a20(struct si476x_core *core,
struct si476x_tune_freq_args *tuneargs)
{
u8 resp[CMD_FM_TUNE_FREQ_NRESP];
const u8 args[CMD_FM_TUNE_FREQ_A20_NARGS] = {
(tuneargs->hd << 6 ) | (tuneargs->tunemode << 4 )
| (tuneargs->smoothmetrics << 2 ) | (tuneargs->injside),
msb(tuneargs->freq),
lsb(tuneargs->freq),
};
return si476x_cmd_tune_seek_freq(core, CMD_FM_TUNE_FREQ,
args, sizeof (args),
resp, sizeof (resp));
}
static int si476x_core_cmd_agc_status_a20(struct si476x_core *core,
struct si476x_agc_status_report *report)
{
int err;
u8 resp[CMD_AGC_STATUS_NRESP_A20];
if (!report)
return -EINVAL;
err = si476x_core_send_command(core, CMD_AGC_STATUS,
NULL, 0 ,
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
if (err < 0 )
return err;
report->mxhi = resp[1 ] & SI476X_AGC_MXHI;
report->mxlo = resp[1 ] & SI476X_AGC_MXLO;
report->lnahi = resp[1 ] & SI476X_AGC_LNAHI;
report->lnalo = resp[1 ] & SI476X_AGC_LNALO;
report->fmagc1 = resp[2 ];
report->fmagc2 = resp[3 ];
report->pgagain = resp[4 ];
report->fmwblang = resp[5 ];
return err;
}
static int si476x_core_cmd_agc_status_a10(struct si476x_core *core,
struct si476x_agc_status_report *report)
{
int err;
u8 resp[CMD_AGC_STATUS_NRESP_A10];
if (!report)
return -EINVAL;
err = si476x_core_send_command(core, CMD_AGC_STATUS,
NULL, 0 ,
resp, ARRAY_SIZE(resp),
SI476X_DEFAULT_TIMEOUT);
if (err < 0 )
return err;
report->mxhi = resp[1 ] & SI476X_AGC_MXHI;
report->mxlo = resp[1 ] & SI476X_AGC_MXLO;
report->lnahi = resp[1 ] & SI476X_AGC_LNAHI;
report->lnalo = resp[1 ] & SI476X_AGC_LNALO;
return err;
}
typedef int (*tune_freq_func_t) (struct si476x_core *core,
struct si476x_tune_freq_args *tuneargs);
static struct {
int (*power_up)(struct si476x_core *,
struct si476x_power_up_args *);
int (*power_down)(struct si476x_core *,
struct si476x_power_down_args *);
tune_freq_func_t fm_tune_freq;
tune_freq_func_t am_tune_freq;
int (*fm_rsq_status)(struct si476x_core *,
struct si476x_rsq_status_args *,
struct si476x_rsq_status_report *);
int (*agc_status)(struct si476x_core *,
struct si476x_agc_status_report *);
int (*intb_pin_cfg)(struct si476x_core *core,
enum si476x_intb_config intb,
enum si476x_a1_config a1);
} si476x_cmds_vtable[] = {
[SI476X_REVISION_A10] = {
.power_up = si476x_core_cmd_power_up_a10,
.power_down = si476x_core_cmd_power_down_a10,
.fm_tune_freq = si476x_core_cmd_fm_tune_freq_a10,
.am_tune_freq = si476x_core_cmd_am_tune_freq_a10,
.fm_rsq_status = si476x_core_cmd_fm_rsq_status_a10,
.agc_status = si476x_core_cmd_agc_status_a10,
.intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a10,
},
[SI476X_REVISION_A20] = {
.power_up = si476x_core_cmd_power_up_a20,
.power_down = si476x_core_cmd_power_down_a20,
.fm_tune_freq = si476x_core_cmd_fm_tune_freq_a20,
.am_tune_freq = si476x_core_cmd_am_tune_freq_a20,
.fm_rsq_status = si476x_core_cmd_fm_rsq_status_a20,
.agc_status = si476x_core_cmd_agc_status_a20,
.intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a20,
},
[SI476X_REVISION_A30] = {
.power_up = si476x_core_cmd_power_up_a20,
.power_down = si476x_core_cmd_power_down_a20,
.fm_tune_freq = si476x_core_cmd_fm_tune_freq_a20,
.am_tune_freq = si476x_core_cmd_am_tune_freq_a20,
.fm_rsq_status = si476x_core_cmd_fm_rsq_status_a30,
.agc_status = si476x_core_cmd_agc_status_a20,
.intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a20,
},
};
int si476x_core_cmd_power_up(struct si476x_core *core,
struct si476x_power_up_args *args)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1 );
return si476x_cmds_vtable[core->revision].power_up(core, args);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_power_up);
int si476x_core_cmd_power_down(struct si476x_core *core,
struct si476x_power_down_args *args)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1 );
return si476x_cmds_vtable[core->revision].power_down(core, args);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_power_down);
int si476x_core_cmd_fm_tune_freq(struct si476x_core *core,
struct si476x_tune_freq_args *args)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1 );
return si476x_cmds_vtable[core->revision].fm_tune_freq(core, args);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_tune_freq);
int si476x_core_cmd_am_tune_freq(struct si476x_core *core,
struct si476x_tune_freq_args *args)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1 );
return si476x_cmds_vtable[core->revision].am_tune_freq(core, args);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_am_tune_freq);
int si476x_core_cmd_fm_rsq_status(struct si476x_core *core,
struct si476x_rsq_status_args *args,
struct si476x_rsq_status_report *report)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1 );
return si476x_cmds_vtable[core->revision].fm_rsq_status(core, args,
report);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rsq_status);
int si476x_core_cmd_agc_status(struct si476x_core *core,
struct si476x_agc_status_report *report)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1 );
return si476x_cmds_vtable[core->revision].agc_status(core, report);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_agc_status);
int si476x_core_cmd_intb_pin_cfg(struct si476x_core *core,
enum si476x_intb_config intb,
enum si476x_a1_config a1)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1 );
return si476x_cmds_vtable[core->revision].intb_pin_cfg(core, intb, a1);
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_intb_pin_cfg);
MODULE_LICENSE("GPL" );
MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>" );
MODULE_DESCRIPTION("API for command exchange for si476x" );
Messung V0.5 in Prozent C=99 H=98 G=98
¤ Dauer der Verarbeitung: 0.28 Sekunden
(vorverarbeitet am 2026-09-29)
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