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Commit 966a1601 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
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Merge branch 'topic/si476x' into patchwork 

* topic/si476x:
  Revert "[media] mfd: Add chip properties handling code for SI476X MFD"
  Revert "[media] mfd: Add the main bulk of core driver for SI476x code"
  Revert "[media] mfd: Add commands abstraction layer for SI476X MFD"
  [media] v4l2: Add a V4L2 driver for SI476X MFD
parents cfc3d6c4 a9dc73e2
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Documentation/video4linux/si476x.txt 0 → 100644
View file @ 966a1601
SI476x Driver Readme
------------------------------------------------
Copyright (C) 2013 Andrey Smirnov <andrew.smirnov@gmail.com>
TODO for the driver
------------------------------
- According to the SiLabs' datasheet it is possible to update the
firmware of the radio chip in the run-time, thus bringing it to the
most recent version. Unfortunately I couldn't find any mentioning of
the said firmware update for the old chips that I tested the driver
against, so for chips like that the driver only exposes the old
functionality.
Parameters exposed over debugfs
-------------------------------
SI476x allow user to get multiple characteristics that can be very
useful for EoL testing/RF performance estimation, parameters that have
very little to do with V4L2 subsystem. Such parameters are exposed via
debugfs and can be accessed via regular file I/O operations.
The drivers exposes following files:
* /sys/kernel/debug/<device-name>/acf
This file contains ACF(Automatically Controlled Features) status
information. The contents of the file is binary data of the
following layout:
Offset | Name | Description
====================================================================
0x00 | blend_int | Flag, set when stereo separation has
| | crossed below the blend threshold
--------------------------------------------------------------------
0x01 | hblend_int | Flag, set when HiBlend cutoff
| | frequency is lower than threshold
--------------------------------------------------------------------
0x02 | hicut_int | Flag, set when HiCut cutoff
| | frequency is lower than threshold
--------------------------------------------------------------------
0x03 | chbw_int | Flag, set when channel filter
| | bandwidth is less than threshold
--------------------------------------------------------------------
0x04 | softmute_int | Flag indicating that softmute
| | attenuation has increased above
| | softmute threshold
--------------------------------------------------------------------
0x05 | smute | 0 - Audio is not soft muted
| | 1 - Audio is soft muted
--------------------------------------------------------------------
0x06 | smattn | Soft mute attenuation level in dB
--------------------------------------------------------------------
0x07 | chbw | Channel filter bandwidth in kHz
--------------------------------------------------------------------
0x08 | hicut | HiCut cutoff frequency in units of
| | 100Hz
--------------------------------------------------------------------
0x09 | hiblend | HiBlend cutoff frequency in units
| | of 100 Hz
--------------------------------------------------------------------
0x10 | pilot | 0 - Stereo pilot is not present
| | 1 - Stereo pilot is present
--------------------------------------------------------------------
0x11 | stblend | Stereo blend in %
--------------------------------------------------------------------
* /sys/kernel/debug/<device-name>/rds_blckcnt
This file contains statistics about RDS receptions. It's binary data
has the following layout:
Offset | Name | Description
====================================================================
0x00 | expected | Number of expected RDS blocks
--------------------------------------------------------------------
0x02 | received | Number of received RDS blocks
--------------------------------------------------------------------
0x04 | uncorrectable | Number of uncorrectable RDS blocks
--------------------------------------------------------------------
* /sys/kernel/debug/<device-name>/agc
This file contains information about parameters pertaining to
AGC(Automatic Gain Control)
The layout is:
Offset | Name | Description
====================================================================
0x00 | mxhi | 0 - FM Mixer PD high threshold is
| | not tripped
| | 1 - FM Mixer PD high threshold is
| | tripped
--------------------------------------------------------------------
0x01 | mxlo | ditto for FM Mixer PD low
--------------------------------------------------------------------
0x02 | lnahi | ditto for FM LNA PD high
--------------------------------------------------------------------
0x03 | lnalo | ditto for FM LNA PD low
--------------------------------------------------------------------
0x04 | fmagc1 | FMAGC1 attenuator resistance
| | (see datasheet for more detail)
--------------------------------------------------------------------
0x05 | fmagc2 | ditto for FMAGC2
--------------------------------------------------------------------
0x06 | pgagain | PGA gain in dB
--------------------------------------------------------------------
0x07 | fmwblang | FM/WB LNA Gain in dB
--------------------------------------------------------------------
* /sys/kernel/debug/<device-name>/rsq
This file contains information about parameters pertaining to
RSQ(Received Signal Quality)
The layout is:
Offset | Name | Description
====================================================================
0x00 | multhint | 0 - multipath value has not crossed
| | the Multipath high threshold
| | 1 - multipath value has crossed
| | the Multipath high threshold
--------------------------------------------------------------------
0x01 | multlint | ditto for Multipath low threshold
--------------------------------------------------------------------
0x02 | snrhint | 0 - received signal's SNR has not
| | crossed high threshold
| | 1 - received signal's SNR has
| | crossed high threshold
--------------------------------------------------------------------
0x03 | snrlint | ditto for low threshold
--------------------------------------------------------------------
0x04 | rssihint | ditto for RSSI high threshold
--------------------------------------------------------------------
0x05 | rssilint | ditto for RSSI low threshold
--------------------------------------------------------------------
0x06 | bltf | Flag indicating if seek command
| | reached/wrapped seek band limit
--------------------------------------------------------------------
0x07 | snr_ready | Indicates that SNR metrics is ready
--------------------------------------------------------------------
0x08 | rssiready | ditto for RSSI metrics
--------------------------------------------------------------------
0x09 | injside | 0 - Low-side injection is being used
| | 1 - High-side injection is used
--------------------------------------------------------------------
0x10 | afcrl | Flag indicating if AFC rails
--------------------------------------------------------------------
0x11 | valid | Flag indicating if channel is valid
--------------------------------------------------------------------
0x12 | readfreq | Current tuned frequency
--------------------------------------------------------------------
0x14 | freqoff | Singed frequency offset in units of
| | 2ppm
--------------------------------------------------------------------
0x15 | rssi | Signed value of RSSI in dBuV
--------------------------------------------------------------------
0x16 | snr | Signed RF SNR in dB
--------------------------------------------------------------------
0x17 | issi | Signed Image Strength Signal
| | indicator
--------------------------------------------------------------------
0x18 | lassi | Signed Low side adjacent Channel
| | Strength indicator
--------------------------------------------------------------------
0x19 | hassi | ditto fpr High side
--------------------------------------------------------------------
0x20 | mult | Multipath indicator
--------------------------------------------------------------------
0x21 | dev | Frequency deviation
--------------------------------------------------------------------
0x24 | assi | Adjascent channel SSI
--------------------------------------------------------------------
0x25 | usn | Ultrasonic noise indicator
--------------------------------------------------------------------
0x26 | pilotdev | Pilot deviation in units of 100 Hz
--------------------------------------------------------------------
0x27 | rdsdev | ditto for RDS
--------------------------------------------------------------------
0x28 | assidev | ditto for ASSI
--------------------------------------------------------------------
0x29 | strongdev | Frequency deviation
--------------------------------------------------------------------
0x30 | rdspi | RDS PI code
--------------------------------------------------------------------
* /sys/kernel/debug/<device-name>/rsq_primary
This file contains information about parameters pertaining to
RSQ(Received Signal Quality) for primary tuner only. Layout is as
the one above.
drivers/media/radio/Kconfig
View file @ 966a1601
......@@ -18,6 +18,22 @@ config RADIO_SI470X
source "drivers/media/radio/si470x/Kconfig"
config RADIO_SI476X
tristate "Silicon Laboratories Si476x I2C FM Radio"
depends on I2C && VIDEO_V4L2
depends on MFD_SI476X_CORE
select SND_SOC_SI476X
---help---
Choose Y here if you have this FM radio chip.
In order to control your radio card, you will need to use programs
that are compatible with the Video For Linux 2 API. Information on
this API and pointers to "v4l2" programs may be found at
<file:Documentation/video4linux/API.html>.
To compile this driver as a module, choose M here: the
module will be called radio-si476x.
config USB_MR800
tristate "AverMedia MR 800 USB FM radio support"
depends on USB && VIDEO_V4L2
......
drivers/media/radio/Makefile
View file @ 966a1601
......@@ -19,6 +19,7 @@ obj-$(CONFIG_RADIO_GEMTEK) += radio-gemtek.o
obj-$(CONFIG_RADIO_TRUST) += radio-trust.o
obj-$(CONFIG_I2C_SI4713) += si4713-i2c.o
obj-$(CONFIG_RADIO_SI4713) += radio-si4713.o
obj-$(CONFIG_RADIO_SI476X) += radio-si476x.o
obj-$(CONFIG_RADIO_MIROPCM20) += radio-miropcm20.o
obj-$(CONFIG_USB_DSBR) += dsbr100.o
obj-$(CONFIG_RADIO_SI470X) += si470x/
......
drivers/media/radio/radio-si476x.c 0 → 100644
View file @ 966a1601
/*
* drivers/media/radio/radio-si476x.c -- V4L2 driver for SI476X chips
*
* Copyright (C) 2012 Innovative Converged Devices(ICD)
* Copyright (C) 2013 Andrey Smirnov
*
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/atomic.h>
#include <linux/videodev2.h>
#include <linux/mutex.h>
#include <linux/debugfs.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-device.h>
#include <media/si476x.h>
#include <linux/mfd/si476x-core.h>
#define FM_FREQ_RANGE_LOW 64000000
#define FM_FREQ_RANGE_HIGH 108000000
#define AM_FREQ_RANGE_LOW 520000
#define AM_FREQ_RANGE_HIGH 30000000
#define PWRLINEFLTR (1 << 8)
#define FREQ_MUL (10000000 / 625)
#define SI476X_PHDIV_STATUS_LINK_LOCKED(status) (0b10000000 & (status))
#define DRIVER_NAME "si476x-radio"
#define DRIVER_CARD "SI476x AM/FM Receiver"
enum si476x_freq_bands {
SI476X_BAND_FM,
SI476X_BAND_AM,
};
static const struct v4l2_frequency_band si476x_bands[] = {
[SI476X_BAND_FM] = {
.type = V4L2_TUNER_RADIO,
.index = SI476X_BAND_FM,
.capability = V4L2_TUNER_CAP_LOW
| V4L2_TUNER_CAP_STEREO
| V4L2_TUNER_CAP_RDS
| V4L2_TUNER_CAP_RDS_BLOCK_IO
| V4L2_TUNER_CAP_FREQ_BANDS,
.rangelow = 64 * FREQ_MUL,
.rangehigh = 108 * FREQ_MUL,
.modulation = V4L2_BAND_MODULATION_FM,
},
[SI476X_BAND_AM] = {
.type = V4L2_TUNER_RADIO,
.index = SI476X_BAND_AM,
.capability = V4L2_TUNER_CAP_LOW
| V4L2_TUNER_CAP_FREQ_BANDS,
.rangelow = 0.52 * FREQ_MUL,
.rangehigh = 30 * FREQ_MUL,
.modulation = V4L2_BAND_MODULATION_AM,
},
};
static inline bool si476x_radio_freq_is_inside_of_the_band(u32 freq, int band)
{
return freq >= si476x_bands[band].rangelow &&
freq <= si476x_bands[band].rangehigh;
}
static inline bool si476x_radio_range_is_inside_of_the_band(u32 low, u32 high,
int band)
{
return low >= si476x_bands[band].rangelow &&
high <= si476x_bands[band].rangehigh;
}
static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl);
static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
enum phase_diversity_modes_idx {
SI476X_IDX_PHDIV_DISABLED,
SI476X_IDX_PHDIV_PRIMARY_COMBINING,
SI476X_IDX_PHDIV_PRIMARY_ANTENNA,
SI476X_IDX_PHDIV_SECONDARY_ANTENNA,
SI476X_IDX_PHDIV_SECONDARY_COMBINING,
};
static const char * const phase_diversity_modes[] = {
[SI476X_IDX_PHDIV_DISABLED] = "Disabled",
[SI476X_IDX_PHDIV_PRIMARY_COMBINING] = "Primary with Secondary",
[SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = "Primary Antenna",
[SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = "Secondary Antenna",
[SI476X_IDX_PHDIV_SECONDARY_COMBINING] = "Secondary with Primary",
};
static inline enum phase_diversity_modes_idx
si476x_phase_diversity_mode_to_idx(enum si476x_phase_diversity_mode mode)
{
switch (mode) {
default: /* FALLTHROUGH */
case SI476X_PHDIV_DISABLED:
return SI476X_IDX_PHDIV_DISABLED;
case SI476X_PHDIV_PRIMARY_COMBINING:
return SI476X_IDX_PHDIV_PRIMARY_COMBINING;
case SI476X_PHDIV_PRIMARY_ANTENNA:
return SI476X_IDX_PHDIV_PRIMARY_ANTENNA;
case SI476X_PHDIV_SECONDARY_ANTENNA:
return SI476X_IDX_PHDIV_SECONDARY_ANTENNA;
case SI476X_PHDIV_SECONDARY_COMBINING:
return SI476X_IDX_PHDIV_SECONDARY_COMBINING;
}
}
static inline enum si476x_phase_diversity_mode
si476x_phase_diversity_idx_to_mode(enum phase_diversity_modes_idx idx)
{
static const int idx_to_value[] = {
[SI476X_IDX_PHDIV_DISABLED] = SI476X_PHDIV_DISABLED,
[SI476X_IDX_PHDIV_PRIMARY_COMBINING] = SI476X_PHDIV_PRIMARY_COMBINING,
[SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = SI476X_PHDIV_PRIMARY_ANTENNA,
[SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = SI476X_PHDIV_SECONDARY_ANTENNA,
[SI476X_IDX_PHDIV_SECONDARY_COMBINING] = SI476X_PHDIV_SECONDARY_COMBINING,
};
return idx_to_value[idx];
}
static const struct v4l2_ctrl_ops si476x_ctrl_ops = {
.g_volatile_ctrl = si476x_radio_g_volatile_ctrl,
.s_ctrl = si476x_radio_s_ctrl,
};
enum si476x_ctrl_idx {
SI476X_IDX_RSSI_THRESHOLD,
SI476X_IDX_SNR_THRESHOLD,
SI476X_IDX_MAX_TUNE_ERROR,
SI476X_IDX_HARMONICS_COUNT,
SI476X_IDX_DIVERSITY_MODE,
SI476X_IDX_INTERCHIP_LINK,
};
static struct v4l2_ctrl_config si476x_ctrls[] = {
/**
* SI476X during its station seeking(or tuning) process uses several
* parameters to detrmine if "the station" is valid:
*
* - Signal's SNR(in dBuV) must be lower than
* #V4L2_CID_SI476X_SNR_THRESHOLD
* - Signal's RSSI(in dBuV) must be greater than
* #V4L2_CID_SI476X_RSSI_THRESHOLD
* - Signal's frequency deviation(in units of 2ppm) must not be
* more than #V4L2_CID_SI476X_MAX_TUNE_ERROR
*/
[SI476X_IDX_RSSI_THRESHOLD] = {
.ops = &si476x_ctrl_ops,
.id = V4L2_CID_SI476X_RSSI_THRESHOLD,
.name = "Valid RSSI Threshold",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = -128,
.max = 127,
.step = 1,
},
[SI476X_IDX_SNR_THRESHOLD] = {
.ops = &si476x_ctrl_ops,
.id = V4L2_CID_SI476X_SNR_THRESHOLD,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Valid SNR Threshold",
.min = -128,
.max = 127,
.step = 1,
},
[SI476X_IDX_MAX_TUNE_ERROR] = {
.ops = &si476x_ctrl_ops,
.id = V4L2_CID_SI476X_MAX_TUNE_ERROR,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Max Tune Errors",
.min = 0,
.max = 126 * 2,
.step = 2,
},
/**
* #V4L2_CID_SI476X_HARMONICS_COUNT -- number of harmonics
* built-in power-line noise supression filter is to reject
* during AM-mode operation.
*/
[SI476X_IDX_HARMONICS_COUNT] = {
.ops = &si476x_ctrl_ops,
.id = V4L2_CID_SI476X_HARMONICS_COUNT,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Count of Harmonics to Reject",
.min = 0,
.max = 20,
.step = 1,
},
/**
* #V4L2_CID_SI476X_DIVERSITY_MODE -- configuration which
* two tuners working in diversity mode are to work in.
*
* - #SI476X_IDX_PHDIV_DISABLED diversity mode disabled
* - #SI476X_IDX_PHDIV_PRIMARY_COMBINING diversity mode is
* on, primary tuner's antenna is the main one.
* - #SI476X_IDX_PHDIV_PRIMARY_ANTENNA diversity mode is
* off, primary tuner's antenna is the main one.
* - #SI476X_IDX_PHDIV_SECONDARY_ANTENNA diversity mode is
* off, secondary tuner's antenna is the main one.
* - #SI476X_IDX_PHDIV_SECONDARY_COMBINING diversity mode is
* on, secondary tuner's antenna is the main one.
*/
[SI476X_IDX_DIVERSITY_MODE] = {
.ops = &si476x_ctrl_ops,
.id = V4L2_CID_SI476X_DIVERSITY_MODE,
.type = V4L2_CTRL_TYPE_MENU,
.name = "Phase Diversity Mode",
.qmenu = phase_diversity_modes,
.min = 0,
.max = ARRAY_SIZE(phase_diversity_modes) - 1,
},
/**
* #V4L2_CID_SI476X_INTERCHIP_LINK -- inter-chip link in
* diversity mode indicator. Allows user to determine if two
* chips working in diversity mode have established a link
* between each other and if the system as a whole uses
* signals from both antennas to receive FM radio.
*/
[SI476X_IDX_INTERCHIP_LINK] = {
.ops = &si476x_ctrl_ops,
.id = V4L2_CID_SI476X_INTERCHIP_LINK,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE,
.name = "Inter-Chip Link",
.min = 0,
.max = 1,
.step = 1,
},
};
struct si476x_radio;
/**
* struct si476x_radio_ops - vtable of tuner functions
*
* This table holds pointers to functions implementing particular
* operations depending on the mode in which the tuner chip was
* configured to start in. If the function is not supported
* corresponding element is set to #NULL.
*
* @tune_freq: Tune chip to a specific frequency
* @seek_start: Star station seeking
* @rsq_status: Get Recieved Signal Quality(RSQ) status
* @rds_blckcnt: Get recived RDS blocks count
* @phase_diversity: Change phase diversity mode of the tuner
* @phase_div_status: Get phase diversity mode status
* @acf_status: Get the status of Automatically Controlled
* Features(ACF)
* @agc_status: Get Automatic Gain Control(AGC) status
*/
struct si476x_radio_ops {
int (*tune_freq)(struct si476x_core *, struct si476x_tune_freq_args *);
int (*seek_start)(struct si476x_core *, bool, bool);
int (*rsq_status)(struct si476x_core *, struct si476x_rsq_status_args *,
struct si476x_rsq_status_report *);
int (*rds_blckcnt)(struct si476x_core *, bool,
struct si476x_rds_blockcount_report *);
int (*phase_diversity)(struct si476x_core *,
enum si476x_phase_diversity_mode);
int (*phase_div_status)(struct si476x_core *);
int (*acf_status)(struct si476x_core *,
struct si476x_acf_status_report *);
int (*agc_status)(struct si476x_core *,
struct si476x_agc_status_report *);
};
/**
* struct si476x_radio - radio device
*
* @core: Pointer to underlying core device
* @videodev: Pointer to video device created by V4L2 subsystem
* @ops: Vtable of functions. See struct si476x_radio_ops for details
* @kref: Reference counter
* @core_lock: An r/w semaphore to brebvent the deletion of underlying
* core structure is the radio device is being used
*/
struct si476x_radio {
struct v4l2_device v4l2dev;
struct video_device videodev;
struct v4l2_ctrl_handler ctrl_handler;
struct si476x_core *core;
/* This field should not be accesses unless core lock is held */
const struct si476x_radio_ops *ops;
struct dentry *debugfs;
u32 audmode;
};
static inline struct si476x_radio *
v4l2_dev_to_radio(struct v4l2_device *d)
{
return container_of(d, struct si476x_radio, v4l2dev);
}
static inline struct si476x_radio *
v4l2_ctrl_handler_to_radio(struct v4l2_ctrl_handler *d)
{
return container_of(d, struct si476x_radio, ctrl_handler);
}
/*
* si476x_vidioc_querycap - query device capabilities
*/
static int si476x_radio_querycap(struct file *file, void *priv,
struct v4l2_capability *capability)
{
struct si476x_radio *radio = video_drvdata(file);
strlcpy(capability->driver, radio->v4l2dev.name,
sizeof(capability->driver));
strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
snprintf(capability->bus_info, sizeof(capability->bus_info),
"platform:%s", radio->v4l2dev.name);
capability->device_caps = V4L2_CAP_TUNER
| V4L2_CAP_RADIO
| V4L2_CAP_HW_FREQ_SEEK;
si476x_core_lock(radio->core);
if (!si476x_core_is_a_secondary_tuner(radio->core))
capability->device_caps |= V4L2_CAP_RDS_CAPTURE
| V4L2_CAP_READWRITE;
si476x_core_unlock(radio->core);
capability->capabilities = capability->device_caps
| V4L2_CAP_DEVICE_CAPS;
return 0;
}
static int si476x_radio_enum_freq_bands(struct file *file, void *priv,
struct v4l2_frequency_band *band)
{
int err;
struct si476x_radio *radio = video_drvdata(file);
if (band->tuner != 0)
return -EINVAL;
switch (radio->core->chip_id) {
/* AM/FM tuners -- all bands are supported */
case SI476X_CHIP_SI4761:
case SI476X_CHIP_SI4764:
if (band->index < ARRAY_SIZE(si476x_bands)) {
*band = si476x_bands[band->index];
err = 0;
} else {
err = -EINVAL;
}
break;
/* FM companion tuner chips -- only FM bands are
* supported */
case SI476X_CHIP_SI4768:
if (band->index == SI476X_BAND_FM) {
*band = si476x_bands[band->index];
err = 0;
} else {
err = -EINVAL;
}
break;
default:
err = -EINVAL;
}
return err;
}
static int si476x_radio_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *tuner)
{
int err;
struct si476x_rsq_status_report report;
struct si476x_radio *radio = video_drvdata(file);
struct si476x_rsq_status_args args = {
.primary = false,
.rsqack = false,
.attune = false,
.cancel = false,
.stcack = false,
};
if (tuner->index != 0)
return -EINVAL;
tuner->type = V4L2_TUNER_RADIO;
tuner->capability = V4L2_TUNER_CAP_LOW /* Measure frequencies
* in multiples of
* 62.5 Hz */
| V4L2_TUNER_CAP_STEREO
| V4L2_TUNER_CAP_HWSEEK_BOUNDED
| V4L2_TUNER_CAP_HWSEEK_WRAP
| V4L2_TUNER_CAP_HWSEEK_PROG_LIM;
si476x_core_lock(radio->core);
if (si476x_core_is_a_secondary_tuner(radio->core)) {
strlcpy(tuner->name, "FM (secondary)", sizeof(tuner->name));
tuner->rxsubchans = 0;
tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow;
} else if (si476x_core_has_am(radio->core)) {
if (si476x_core_is_a_primary_tuner(radio->core))
strlcpy(tuner->name, "AM/FM (primary)",
sizeof(tuner->name));
else
strlcpy(tuner->name, "AM/FM", sizeof(tuner->name));
tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO
| V4L2_TUNER_SUB_RDS;
tuner->capability |= V4L2_TUNER_CAP_RDS
| V4L2_TUNER_CAP_RDS_BLOCK_IO
| V4L2_TUNER_CAP_FREQ_BANDS;
tuner->rangelow = si476x_bands[SI476X_BAND_AM].rangelow;
} else {
strlcpy(tuner->name, "FM", sizeof(tuner->name));
tuner->rxsubchans = V4L2_TUNER_SUB_RDS;
tuner->capability |= V4L2_TUNER_CAP_RDS
| V4L2_TUNER_CAP_RDS_BLOCK_IO
| V4L2_TUNER_CAP_FREQ_BANDS;
tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow;
}
tuner->audmode = radio->audmode;
tuner->afc = 1;
tuner->rangehigh = si476x_bands[SI476X_BAND_FM].rangehigh;
err = radio->ops->rsq_status(radio->core,
&args, &report);
if (err < 0) {
tuner->signal = 0;
} else {
/*
* tuner->signal value range: 0x0000 .. 0xFFFF,
* report.rssi: -128 .. 127
*/
tuner->signal = (report.rssi + 128) * 257;
}
si476x_core_unlock(radio->core);
return err;
}
static int si476x_radio_s_tuner(struct file *file, void *priv,
const struct v4l2_tuner *tuner)
{
struct si476x_radio *radio = video_drvdata(file);
if (tuner->index != 0)
return -EINVAL;
if (tuner->audmode == V4L2_TUNER_MODE_MONO ||
tuner->audmode == V4L2_TUNER_MODE_STEREO)
radio->audmode = tuner->audmode;
else
radio->audmode = V4L2_TUNER_MODE_STEREO;
return 0;
}
static int si476x_radio_init_vtable(struct si476x_radio *radio,
enum si476x_func func)
{
static const struct si476x_radio_ops fm_ops = {
.tune_freq = si476x_core_cmd_fm_tune_freq,
.seek_start = si476x_core_cmd_fm_seek_start,
.rsq_status = si476x_core_cmd_fm_rsq_status,
.rds_blckcnt = si476x_core_cmd_fm_rds_blockcount,
.phase_diversity = si476x_core_cmd_fm_phase_diversity,
.phase_div_status = si476x_core_cmd_fm_phase_div_status,
.acf_status = si476x_core_cmd_fm_acf_status,
.agc_status = si476x_core_cmd_agc_status,
};
static const struct si476x_radio_ops am_ops = {
.tune_freq = si476x_core_cmd_am_tune_freq,
.seek_start = si476x_core_cmd_am_seek_start,
.rsq_status = si476x_core_cmd_am_rsq_status,
.rds_blckcnt = NULL,
.phase_diversity = NULL,
.phase_div_status = NULL,
.acf_status = si476x_core_cmd_am_acf_status,
.agc_status = NULL,
};
switch (func) {
case SI476X_FUNC_FM_RECEIVER:
radio->ops = &fm_ops;
return 0;
case SI476X_FUNC_AM_RECEIVER:
radio->ops = &am_ops;
return 0;
default:
WARN(1, "Unexpected tuner function value\n");
return -EINVAL;
}
}
static int si476x_radio_pretune(struct si476x_radio *radio,
enum si476x_func func)
{
int retval;
struct si476x_tune_freq_args args = {
.zifsr = false,
.hd = false,
.injside = SI476X_INJSIDE_AUTO,
.tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE,
.smoothmetrics = SI476X_SM_INITIALIZE_AUDIO,
.antcap = 0,
};
switch (func) {
case SI476X_FUNC_FM_RECEIVER:
args.freq = v4l2_to_si476x(radio->core,
92 * FREQ_MUL);
retval = radio->ops->tune_freq(radio->core, &args);
break;
case SI476X_FUNC_AM_RECEIVER:
args.freq = v4l2_to_si476x(radio->core,
0.6 * FREQ_MUL);
retval = radio->ops->tune_freq(radio->core, &args);
break;
default:
WARN(1, "Unexpected tuner function value\n");
retval = -EINVAL;
}
return retval;
}
static int si476x_radio_do_post_powerup_init(struct si476x_radio *radio,
enum si476x_func func)
{
int err;
/* regcache_mark_dirty(radio->core->regmap); */
err = regcache_sync_region(radio->core->regmap,
SI476X_PROP_DIGITAL_IO_INPUT_SAMPLE_RATE,
SI476X_PROP_DIGITAL_IO_OUTPUT_FORMAT);
if (err < 0)
return err;
err = regcache_sync_region(radio->core->regmap,
SI476X_PROP_AUDIO_DEEMPHASIS,
SI476X_PROP_AUDIO_PWR_LINE_FILTER);
if (err < 0)
return err;
err = regcache_sync_region(radio->core->regmap,
SI476X_PROP_INT_CTL_ENABLE,
SI476X_PROP_INT_CTL_ENABLE);
if (err < 0)
return err;
/*
* Is there any point in restoring SNR and the like
* when switching between AM/FM?
*/
err = regcache_sync_region(radio->core->regmap,
SI476X_PROP_VALID_MAX_TUNE_ERROR,
SI476X_PROP_VALID_MAX_TUNE_ERROR);
if (err < 0)
return err;
err = regcache_sync_region(radio->core->regmap,
SI476X_PROP_VALID_SNR_THRESHOLD,
SI476X_PROP_VALID_RSSI_THRESHOLD);
if (err < 0)
return err;
if (func == SI476X_FUNC_FM_RECEIVER) {
if (si476x_core_has_diversity(radio->core)) {
err = si476x_core_cmd_fm_phase_diversity(radio->core,
radio->core->diversity_mode);
if (err < 0)
return err;
}
err = regcache_sync_region(radio->core->regmap,
SI476X_PROP_FM_RDS_INTERRUPT_SOURCE,
SI476X_PROP_FM_RDS_CONFIG);
if (err < 0)
return err;
}
return si476x_radio_init_vtable(radio, func);
}
static int si476x_radio_change_func(struct si476x_radio *radio,
enum si476x_func func)
{
int err;
bool soft;
/*
* Since power/up down is a very time consuming operation,
* try to avoid doing it if the requested mode matches the one
* the tuner is in
*/
if (func == radio->core->power_up_parameters.func)
return 0;
soft = true;
err = si476x_core_stop(radio->core, soft);
if (err < 0) {
/*
* OK, if the chip does not want to play nice let's
* try to reset it in more brutal way
*/
soft = false;
err = si476x_core_stop(radio->core, soft);
if (err < 0)
return err;
}
/*
Set the desired radio tuner function
*/
radio->core->power_up_parameters.func = func;
err = si476x_core_start(radio->core, soft);
if (err < 0)
return err;
/*
* No need to do the rest of manipulations for the bootlader
* mode
*/
if (func != SI476X_FUNC_FM_RECEIVER &&
func != SI476X_FUNC_AM_RECEIVER)
return err;
return si476x_radio_do_post_powerup_init(radio, func);
}
static int si476x_radio_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
int err;
struct si476x_radio *radio = video_drvdata(file);
if (f->tuner != 0 ||
f->type != V4L2_TUNER_RADIO)
return -EINVAL;
si476x_core_lock(radio->core);
if (radio->ops->rsq_status) {
struct si476x_rsq_status_report report;
struct si476x_rsq_status_args args = {
.primary = false,
.rsqack = false,
.attune = true,
.cancel = false,
.stcack = false,
};
err = radio->ops->rsq_status(radio->core, &args, &report);
if (!err)
f->frequency = si476x_to_v4l2(radio->core,
report.readfreq);
} else {
err = -EINVAL;
}
si476x_core_unlock(radio->core);
return err;
}
static int si476x_radio_s_frequency(struct file *file, void *priv,
const struct v4l2_frequency *f)
{
int err;
u32 freq = f->frequency;
struct si476x_tune_freq_args args;
struct si476x_radio *radio = video_drvdata(file);
const u32 midrange = (si476x_bands[SI476X_BAND_AM].rangehigh +
si476x_bands[SI476X_BAND_FM].rangelow) / 2;
const int band = (freq > midrange) ?
SI476X_BAND_FM : SI476X_BAND_AM;
const enum si476x_func func = (band == SI476X_BAND_AM) ?
SI476X_FUNC_AM_RECEIVER : SI476X_FUNC_FM_RECEIVER;
if (f->tuner != 0 ||
f->type != V4L2_TUNER_RADIO)
return -EINVAL;
si476x_core_lock(radio->core);
freq = clamp(freq,
si476x_bands[band].rangelow,
si476x_bands[band].rangehigh);
if (si476x_radio_freq_is_inside_of_the_band(freq,
SI476X_BAND_AM) &&
(!si476x_core_has_am(radio->core) ||
si476x_core_is_a_secondary_tuner(radio->core))) {
err = -EINVAL;
goto unlock;
}
err = si476x_radio_change_func(radio, func);
if (err < 0)
goto unlock;
args.zifsr = false;
args.hd = false;
args.injside = SI476X_INJSIDE_AUTO;
args.freq = v4l2_to_si476x(radio->core, freq);
args.tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE;
args.smoothmetrics = SI476X_SM_INITIALIZE_AUDIO;
args.antcap = 0;
err = radio->ops->tune_freq(radio->core, &args);
unlock:
si476x_core_unlock(radio->core);
return err;
}
static int si476x_radio_s_hw_freq_seek(struct file *file, void *priv,
const struct v4l2_hw_freq_seek *seek)
{
int err;
enum si476x_func func;
u32 rangelow, rangehigh;
struct si476x_radio *radio = video_drvdata(file);
if (file->f_flags & O_NONBLOCK)
return -EAGAIN;
if (seek->tuner != 0 ||
seek->type != V4L2_TUNER_RADIO)
return -EINVAL;
si476x_core_lock(radio->core);
if (!seek->rangelow) {
err = regmap_read(radio->core->regmap,
SI476X_PROP_SEEK_BAND_BOTTOM,
&rangelow);
if (!err)
rangelow = si476x_to_v4l2(radio->core, rangelow);
else
goto unlock;
}
if (!seek->rangehigh) {
err = regmap_read(radio->core->regmap,
SI476X_PROP_SEEK_BAND_TOP,
&rangehigh);
if (!err)
rangehigh = si476x_to_v4l2(radio->core, rangehigh);
else
goto unlock;
}
if (rangelow > rangehigh) {
err = -EINVAL;
goto unlock;
}
if (si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh,
SI476X_BAND_FM)) {
func = SI476X_FUNC_FM_RECEIVER;
} else if (si476x_core_has_am(radio->core) &&
si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh,
SI476X_BAND_AM)) {
func = SI476X_FUNC_AM_RECEIVER;
} else {
err = -EINVAL;
goto unlock;
}
err = si476x_radio_change_func(radio, func);
if (err < 0)
goto unlock;
if (seek->rangehigh) {
err = regmap_write(radio->core->regmap,
SI476X_PROP_SEEK_BAND_TOP,
v4l2_to_si476x(radio->core,
seek->rangehigh));
if (err)
goto unlock;
}
if (seek->rangelow) {
err = regmap_write(radio->core->regmap,
SI476X_PROP_SEEK_BAND_BOTTOM,
v4l2_to_si476x(radio->core,
seek->rangelow));
if (err)
goto unlock;
}
if (seek->spacing) {
err = regmap_write(radio->core->regmap,
SI476X_PROP_SEEK_FREQUENCY_SPACING,
v4l2_to_si476x(radio->core,
seek->spacing));
if (err)
goto unlock;
}
err = radio->ops->seek_start(radio->core,
seek->seek_upward,
seek->wrap_around);
unlock:
si476x_core_unlock(radio->core);
return err;
}
static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
int retval;
struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler);
si476x_core_lock(radio->core);
switch (ctrl->id) {
case V4L2_CID_SI476X_INTERCHIP_LINK:
if (si476x_core_has_diversity(radio->core)) {
if (radio->ops->phase_diversity) {
retval = radio->ops->phase_div_status(radio->core);
if (retval < 0)
break;
ctrl->val = !!SI476X_PHDIV_STATUS_LINK_LOCKED(retval);
retval = 0;
break;
} else {
retval = -ENOTTY;
break;
}
}
retval = -EINVAL;
break;
default:
retval = -EINVAL;
break;
}
si476x_core_unlock(radio->core);
return retval;
}
static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl)
{
int retval;
enum si476x_phase_diversity_mode mode;
struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler);
si476x_core_lock(radio->core);
switch (ctrl->id) {
case V4L2_CID_SI476X_HARMONICS_COUNT:
retval = regmap_update_bits(radio->core->regmap,
SI476X_PROP_AUDIO_PWR_LINE_FILTER,
SI476X_PROP_PWR_HARMONICS_MASK,
ctrl->val);
break;
case V4L2_CID_POWER_LINE_FREQUENCY:
switch (ctrl->val) {
case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED:
retval = regmap_update_bits(radio->core->regmap,
SI476X_PROP_AUDIO_PWR_LINE_FILTER,
SI476X_PROP_PWR_ENABLE_MASK,
0);
break;
case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
retval = regmap_update_bits(radio->core->regmap,
SI476X_PROP_AUDIO_PWR_LINE_FILTER,
SI476X_PROP_PWR_GRID_MASK,
SI476X_PROP_PWR_GRID_50HZ);
break;
case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
retval = regmap_update_bits(radio->core->regmap,
SI476X_PROP_AUDIO_PWR_LINE_FILTER,
SI476X_PROP_PWR_GRID_MASK,
SI476X_PROP_PWR_GRID_60HZ);
break;
default:
retval = -EINVAL;
break;
}
break;
case V4L2_CID_SI476X_RSSI_THRESHOLD:
retval = regmap_write(radio->core->regmap,
SI476X_PROP_VALID_RSSI_THRESHOLD,
ctrl->val);
break;
case V4L2_CID_SI476X_SNR_THRESHOLD:
retval = regmap_write(radio->core->regmap,
SI476X_PROP_VALID_SNR_THRESHOLD,
ctrl->val);
break;
case V4L2_CID_SI476X_MAX_TUNE_ERROR:
retval = regmap_write(radio->core->regmap,
SI476X_PROP_VALID_MAX_TUNE_ERROR,
ctrl->val);
break;
case V4L2_CID_RDS_RECEPTION:
/*
* It looks like RDS related properties are
* inaccesable when tuner is in AM mode, so cache the
* changes
*/
if (si476x_core_is_in_am_receiver_mode(radio->core))
regcache_cache_only(radio->core->regmap, true);
if (ctrl->val) {
retval = regmap_write(radio->core->regmap,
SI476X_PROP_FM_RDS_INTERRUPT_FIFO_COUNT,
radio->core->rds_fifo_depth);
if (retval < 0)
break;
if (radio->core->client->irq) {
retval = regmap_write(radio->core->regmap,
SI476X_PROP_FM_RDS_INTERRUPT_SOURCE,
SI476X_RDSRECV);
if (retval < 0)
break;
}
/* Drain RDS FIFO before enabling RDS processing */
retval = si476x_core_cmd_fm_rds_status(radio->core,
false,
true,
true,
NULL);
if (retval < 0)
break;
retval = regmap_update_bits(radio->core->regmap,
SI476X_PROP_FM_RDS_CONFIG,
SI476X_PROP_RDSEN_MASK,
SI476X_PROP_RDSEN);
} else {
retval = regmap_update_bits(radio->core->regmap,
SI476X_PROP_FM_RDS_CONFIG,
SI476X_PROP_RDSEN_MASK,
!SI476X_PROP_RDSEN);
}
if (si476x_core_is_in_am_receiver_mode(radio->core))
regcache_cache_only(radio->core->regmap, false);
break;
case V4L2_CID_TUNE_DEEMPHASIS:
retval = regmap_write(radio->core->regmap,
SI476X_PROP_AUDIO_DEEMPHASIS,
ctrl->val);
break;
case V4L2_CID_SI476X_DIVERSITY_MODE:
mode = si476x_phase_diversity_idx_to_mode(ctrl->val);
if (mode == radio->core->diversity_mode) {
retval = 0;
break;
}
if (si476x_core_is_in_am_receiver_mode(radio->core)) {
/*
* Diversity cannot be configured while tuner
* is in AM mode so save the changes and carry on.
*/
radio->core->diversity_mode = mode;
retval = 0;
} else {
retval = radio->ops->phase_diversity(radio->core, mode);
if (!retval)
radio->core->diversity_mode = mode;
}
break;
default:
retval = -EINVAL;
break;
}
si476x_core_unlock(radio->core);
return retval;
}
static int si476x_radio_g_chip_ident(struct file *file, void *fh,
struct v4l2_dbg_chip_ident *chip)
{
if (chip->match.type == V4L2_CHIP_MATCH_HOST &&
v4l2_chip_match_host(&chip->match))
return 0;
return -EINVAL;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int si476x_radio_g_register(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
int err;
unsigned int value;
struct si476x_radio *radio = video_drvdata(file);
si476x_core_lock(radio->core);
reg->size = 2;
err = regmap_read(radio->core->regmap,
(unsigned int)reg->reg, &value);
reg->val = value;
si476x_core_unlock(radio->core);
return err;
}
static int si476x_radio_s_register(struct file *file, void *fh,
const struct v4l2_dbg_register *reg)
{
int err;
struct si476x_radio *radio = video_drvdata(file);
si476x_core_lock(radio->core);
err = regmap_write(radio->core->regmap,
(unsigned int)reg->reg,
(unsigned int)reg->val);
si476x_core_unlock(radio->core);
return err;
}
#endif
static int si476x_radio_fops_open(struct file *file)
{
struct si476x_radio *radio = video_drvdata(file);
int err;
err = v4l2_fh_open(file);
if (err)
return err;
if (v4l2_fh_is_singular_file(file)) {
si476x_core_lock(radio->core);
err = si476x_core_set_power_state(radio->core,
SI476X_POWER_UP_FULL);
if (err < 0)
goto done;
err = si476x_radio_do_post_powerup_init(radio,
radio->core->power_up_parameters.func);
if (err < 0)
goto power_down;
err = si476x_radio_pretune(radio,
radio->core->power_up_parameters.func);
if (err < 0)
goto power_down;
si476x_core_unlock(radio->core);
/*Must be done after si476x_core_unlock to prevent a deadlock*/
v4l2_ctrl_handler_setup(&radio->ctrl_handler);
}
return err;
power_down:
si476x_core_set_power_state(radio->core,
SI476X_POWER_DOWN);
done:
si476x_core_unlock(radio->core);
v4l2_fh_release(file);
return err;
}
static int si476x_radio_fops_release(struct file *file)
{
int err;
struct si476x_radio *radio = video_drvdata(file);
if (v4l2_fh_is_singular_file(file) &&
atomic_read(&radio->core->is_alive))
si476x_core_set_power_state(radio->core,
SI476X_POWER_DOWN);
err = v4l2_fh_release(file);
return err;
}
static ssize_t si476x_radio_fops_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
ssize_t rval;
size_t fifo_len;
unsigned int copied;
struct si476x_radio *radio = video_drvdata(file);
/* block if no new data available */
if (kfifo_is_empty(&radio->core->rds_fifo)) {
if (file->f_flags & O_NONBLOCK)
return -EWOULDBLOCK;
rval = wait_event_interruptible(radio->core->rds_read_queue,
(!kfifo_is_empty(&radio->core->rds_fifo) ||
!atomic_read(&radio->core->is_alive)));
if (rval < 0)
return -EINTR;
if (!atomic_read(&radio->core->is_alive))
return -ENODEV;
}
fifo_len = kfifo_len(&radio->core->rds_fifo);
if (kfifo_to_user(&radio->core->rds_fifo, buf,
min(fifo_len, count),
&copied) != 0) {
dev_warn(&radio->videodev.dev,
"Error during FIFO to userspace copy\n");
rval = -EIO;
} else {
rval = (ssize_t)copied;
}
return rval;
}
static unsigned int si476x_radio_fops_poll(struct file *file,
struct poll_table_struct *pts)
{
struct si476x_radio *radio = video_drvdata(file);
unsigned long req_events = poll_requested_events(pts);
unsigned int err = v4l2_ctrl_poll(file, pts);
if (req_events & (POLLIN | POLLRDNORM)) {
if (atomic_read(&radio->core->is_alive))
poll_wait(file, &radio->core->rds_read_queue, pts);
if (!atomic_read(&radio->core->is_alive))
err = POLLHUP;
if (!kfifo_is_empty(&radio->core->rds_fifo))
err = POLLIN | POLLRDNORM;
}
return err;
}
static const struct v4l2_file_operations si476x_fops = {
.owner = THIS_MODULE,
.read = si476x_radio_fops_read,
.poll = si476x_radio_fops_poll,
.unlocked_ioctl = video_ioctl2,
.open = si476x_radio_fops_open,
.release = si476x_radio_fops_release,
};
static const struct v4l2_ioctl_ops si4761_ioctl_ops = {
.vidioc_querycap = si476x_radio_querycap,
.vidioc_g_tuner = si476x_radio_g_tuner,
.vidioc_s_tuner = si476x_radio_s_tuner,
.vidioc_g_frequency = si476x_radio_g_frequency,
.vidioc_s_frequency = si476x_radio_s_frequency,
.vidioc_s_hw_freq_seek = si476x_radio_s_hw_freq_seek,
.vidioc_enum_freq_bands = si476x_radio_enum_freq_bands,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_g_chip_ident = si476x_radio_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = si476x_radio_g_register,
.vidioc_s_register = si476x_radio_s_register,
#endif
};
static const struct video_device si476x_viddev_template = {
.fops = &si476x_fops,
.name = DRIVER_NAME,
.release = video_device_release_empty,
};
static ssize_t si476x_radio_read_acf_blob(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
int err;
struct si476x_radio *radio = file->private_data;
struct si476x_acf_status_report report;
si476x_core_lock(radio->core);
if (radio->ops->acf_status)
err = radio->ops->acf_status(radio->core, &report);
else
err = -ENOENT;
si476x_core_unlock(radio->core);
if (err < 0)
return err;
return simple_read_from_buffer(user_buf, count, ppos, &report,
sizeof(report));
}
static const struct file_operations radio_acf_fops = {
.open = simple_open,
.llseek = default_llseek,
.read = si476x_radio_read_acf_blob,
};
static ssize_t si476x_radio_read_rds_blckcnt_blob(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
int err;
struct si476x_radio *radio = file->private_data;
struct si476x_rds_blockcount_report report;
si476x_core_lock(radio->core);
if (radio->ops->rds_blckcnt)
err = radio->ops->rds_blckcnt(radio->core, true,
&report);
else
err = -ENOENT;
si476x_core_unlock(radio->core);
if (err < 0)
return err;
return simple_read_from_buffer(user_buf, count, ppos, &report,
sizeof(report));
}
static const struct file_operations radio_rds_blckcnt_fops = {
.open = simple_open,
.llseek = default_llseek,
.read = si476x_radio_read_rds_blckcnt_blob,
};
static ssize_t si476x_radio_read_agc_blob(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
int err;
struct si476x_radio *radio = file->private_data;
struct si476x_agc_status_report report;
si476x_core_lock(radio->core);
if (radio->ops->rds_blckcnt)
err = radio->ops->agc_status(radio->core, &report);
else
err = -ENOENT;
si476x_core_unlock(radio->core);
if (err < 0)
return err;
return simple_read_from_buffer(user_buf, count, ppos, &report,
sizeof(report));
}
static const struct file_operations radio_agc_fops = {
.open = simple_open,
.llseek = default_llseek,
.read = si476x_radio_read_agc_blob,
};
static ssize_t si476x_radio_read_rsq_blob(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
int err;
struct si476x_radio *radio = file->private_data;
struct si476x_rsq_status_report report;
struct si476x_rsq_status_args args = {
.primary = false,
.rsqack = false,
.attune = false,
.cancel = false,
.stcack = false,
};
si476x_core_lock(radio->core);
if (radio->ops->rds_blckcnt)
err = radio->ops->rsq_status(radio->core, &args, &report);
else
err = -ENOENT;
si476x_core_unlock(radio->core);
if (err < 0)
return err;
return simple_read_from_buffer(user_buf, count, ppos, &report,
sizeof(report));
}
static const struct file_operations radio_rsq_fops = {
.open = simple_open,
.llseek = default_llseek,
.read = si476x_radio_read_rsq_blob,
};
static ssize_t si476x_radio_read_rsq_primary_blob(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
int err;
struct si476x_radio *radio = file->private_data;
struct si476x_rsq_status_report report;
struct si476x_rsq_status_args args = {
.primary = true,
.rsqack = false,
.attune = false,
.cancel = false,
.stcack = false,
};
si476x_core_lock(radio->core);
if (radio->ops->rds_blckcnt)
err = radio->ops->rsq_status(radio->core, &args, &report);
else
err = -ENOENT;
si476x_core_unlock(radio->core);
if (err < 0)
return err;
return simple_read_from_buffer(user_buf, count, ppos, &report,
sizeof(report));
}
static const struct file_operations radio_rsq_primary_fops = {
.open = simple_open,
.llseek = default_llseek,
.read = si476x_radio_read_rsq_primary_blob,
};
static int si476x_radio_init_debugfs(struct si476x_radio *radio)
{
struct dentry *dentry;
int ret;
dentry = debugfs_create_dir(dev_name(radio->v4l2dev.dev), NULL);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto exit;
}
radio->debugfs = dentry;
dentry = debugfs_create_file("acf", S_IRUGO,
radio->debugfs, radio, &radio_acf_fops);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto cleanup;
}
dentry = debugfs_create_file("rds_blckcnt", S_IRUGO,
radio->debugfs, radio,
&radio_rds_blckcnt_fops);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto cleanup;
}
dentry = debugfs_create_file("agc", S_IRUGO,
radio->debugfs, radio, &radio_agc_fops);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto cleanup;
}
dentry = debugfs_create_file("rsq", S_IRUGO,
radio->debugfs, radio, &radio_rsq_fops);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto cleanup;
}
dentry = debugfs_create_file("rsq_primary", S_IRUGO,
radio->debugfs, radio,
&radio_rsq_primary_fops);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
goto cleanup;
}
return 0;
cleanup:
debugfs_remove_recursive(radio->debugfs);
exit:
return ret;
}
static int si476x_radio_add_new_custom(struct si476x_radio *radio,
enum si476x_ctrl_idx idx)
{
int rval;
struct v4l2_ctrl *ctrl;
ctrl = v4l2_ctrl_new_custom(&radio->ctrl_handler,
&si476x_ctrls[idx],
NULL);
rval = radio->ctrl_handler.error;
if (ctrl == NULL && rval)
dev_err(radio->v4l2dev.dev,
"Could not initialize '%s' control %d\n",
si476x_ctrls[idx].name, rval);
return rval;
}
static int si476x_radio_probe(struct platform_device *pdev)
{
int rval;
struct si476x_radio *radio;
struct v4l2_ctrl *ctrl;
static atomic_t instance = ATOMIC_INIT(0);
radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
if (!radio)
return -ENOMEM;
radio->core = i2c_mfd_cell_to_core(&pdev->dev);
v4l2_device_set_name(&radio->v4l2dev, DRIVER_NAME, &instance);
rval = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
if (rval) {
dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
return rval;
}
memcpy(&radio->videodev, &si476x_viddev_template,
sizeof(struct video_device));
radio->videodev.v4l2_dev = &radio->v4l2dev;
radio->videodev.ioctl_ops = &si4761_ioctl_ops;
video_set_drvdata(&radio->videodev, radio);
platform_set_drvdata(pdev, radio);
set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags);
radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
v4l2_ctrl_handler_init(&radio->ctrl_handler,
1 + ARRAY_SIZE(si476x_ctrls));
if (si476x_core_has_am(radio->core)) {
ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler,
&si476x_ctrl_ops,
V4L2_CID_POWER_LINE_FREQUENCY,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
0, 0);
rval = radio->ctrl_handler.error;
if (ctrl == NULL && rval) {
dev_err(&pdev->dev, "Could not initialize V4L2_CID_POWER_LINE_FREQUENCY control %d\n",
rval);
goto exit;
}
rval = si476x_radio_add_new_custom(radio,
SI476X_IDX_HARMONICS_COUNT);
if (rval < 0)
goto exit;
}
rval = si476x_radio_add_new_custom(radio, SI476X_IDX_RSSI_THRESHOLD);
if (rval < 0)
goto exit;
rval = si476x_radio_add_new_custom(radio, SI476X_IDX_SNR_THRESHOLD);
if (rval < 0)
goto exit;
rval = si476x_radio_add_new_custom(radio, SI476X_IDX_MAX_TUNE_ERROR);
if (rval < 0)
goto exit;
ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler,
&si476x_ctrl_ops,
V4L2_CID_TUNE_DEEMPHASIS,
V4L2_DEEMPHASIS_75_uS, 0, 0);
rval = radio->ctrl_handler.error;
if (ctrl == NULL && rval) {
dev_err(&pdev->dev, "Could not initialize V4L2_CID_TUNE_DEEMPHASIS control %d\n",
rval);
goto exit;
}
ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &si476x_ctrl_ops,
V4L2_CID_RDS_RECEPTION,
0, 1, 1, 1);
rval = radio->ctrl_handler.error;
if (ctrl == NULL && rval) {
dev_err(&pdev->dev, "Could not initialize V4L2_CID_RDS_RECEPTION control %d\n",
rval);
goto exit;
}
if (si476x_core_has_diversity(radio->core)) {
si476x_ctrls[SI476X_IDX_DIVERSITY_MODE].def =
si476x_phase_diversity_mode_to_idx(radio->core->diversity_mode);
si476x_radio_add_new_custom(radio, SI476X_IDX_DIVERSITY_MODE);
if (rval < 0)
goto exit;
si476x_radio_add_new_custom(radio, SI476X_IDX_INTERCHIP_LINK);
if (rval < 0)
goto exit;
}
/* register video device */
rval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, -1);
if (rval < 0) {
dev_err(&pdev->dev, "Could not register video device\n");
goto exit;
}
rval = si476x_radio_init_debugfs(radio);
if (rval < 0) {
dev_err(&pdev->dev, "Could not creat debugfs interface\n");
goto exit;
}
return 0;
exit:
v4l2_ctrl_handler_free(radio->videodev.ctrl_handler);
return rval;
}
static int si476x_radio_remove(struct platform_device *pdev)
{
struct si476x_radio *radio = platform_get_drvdata(pdev);
v4l2_ctrl_handler_free(radio->videodev.ctrl_handler);
video_unregister_device(&radio->videodev);
v4l2_device_unregister(&radio->v4l2dev);
debugfs_remove_recursive(radio->debugfs);
return 0;
}
MODULE_ALIAS("platform:si476x-radio");
static struct platform_driver si476x_radio_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
},
.probe = si476x_radio_probe,
.remove = si476x_radio_remove,
};
module_platform_driver(si476x_radio_driver);
MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
MODULE_DESCRIPTION("Driver for Si4761/64/68 AM/FM Radio MFD Cell");
MODULE_LICENSE("GPL");
drivers/mfd/si476x-cmd.c deleted 100644 → 0
View file @ cfc3d6c4
/*
* 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>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#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 <media/si476x.h>
#include <linux/mfd/si476x-core.h>
#define msb(x) ((u8)((u16) x >> 8))
#define lsb(x) ((u8)((u16) x & 0x00FF))
#define CMD_POWER_UP 0x01
#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 0x11
#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 0x12
#define CMD_FUNC_INFO_NRESP 7
#define CMD_SET_PROPERTY 0x13
#define CMD_SET_PROPERTY_NARGS 5
#define CMD_SET_PROPERTY_NRESP 1
#define CMD_GET_PROPERTY 0x14
#define CMD_GET_PROPERTY_NARGS 3
#define CMD_GET_PROPERTY_NRESP 4
#define CMD_AGC_STATUS 0x17
#define CMD_AGC_STATUS_NRESP_A10 2
#define CMD_AGC_STATUS_NRESP_A20 6
#define PIN_CFG_BYTE(x) (0x7F & (x))
#define CMD_DIG_AUDIO_PIN_CFG 0x18
#define CMD_DIG_AUDIO_PIN_CFG_NARGS 4
#define CMD_DIG_AUDIO_PIN_CFG_NRESP 5
#define CMD_ZIF_PIN_CFG 0x19
#define CMD_ZIF_PIN_CFG_NARGS 4
#define CMD_ZIF_PIN_CFG_NRESP 5
#define CMD_IC_LINK_GPO_CTL_PIN_CFG 0x1A
#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 0x1B
#define CMD_ANA_AUDIO_PIN_CFG_NARGS 1
#define CMD_ANA_AUDIO_PIN_CFG_NRESP 2
#define CMD_INTB_PIN_CFG 0x1C
#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 0x30
#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 0x32
#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 0x31
#define CMD_FM_SEEK_START_NARGS 1
#define CMD_FM_SEEK_START_NRESP 1
#define CMD_FM_RDS_STATUS 0x36
#define CMD_FM_RDS_STATUS_NARGS 1
#define CMD_FM_RDS_STATUS_NRESP 16
#define CMD_FM_RDS_BLOCKCOUNT 0x37
#define CMD_FM_RDS_BLOCKCOUNT_NARGS 1
#define CMD_FM_RDS_BLOCKCOUNT_NRESP 8
#define CMD_FM_PHASE_DIVERSITY 0x38
#define CMD_FM_PHASE_DIVERSITY_NARGS 1
#define CMD_FM_PHASE_DIVERSITY_NRESP 1
#define CMD_FM_PHASE_DIV_STATUS 0x39
#define CMD_FM_PHASE_DIV_STATUS_NRESP 2
#define CMD_AM_TUNE_FREQ 0x40
#define CMD_AM_TUNE_FREQ_NARGS 3
#define CMD_AM_TUNE_FREQ_NRESP 1
#define CMD_AM_RSQ_STATUS 0x42
#define CMD_AM_RSQ_STATUS_NARGS 1
#define CMD_AM_RSQ_STATUS_NRESP 13
#define CMD_AM_SEEK_START 0x41
#define CMD_AM_SEEK_START_NARGS 1
#define CMD_AM_SEEK_START_NRESP 1
#define CMD_AM_ACF_STATUS 0x45
#define CMD_AM_ACF_STATUS_NRESP 6
#define CMD_AM_ACF_STATUS_NARGS 1
#define CMD_FM_ACF_STATUS 0x35
#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 = 0b11111,
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 = 0x10,
SI476X_ERR_BAD_ARG1 = 0x11,
SI476X_ERR_BAD_ARG2 = 0x12,
SI476X_ERR_BAD_ARG3 = 0x13,
SI476X_ERR_BAD_ARG4 = 0x14,
SI476X_ERR_BUSY = 0x18,
SI476X_ERR_BAD_INTERNAL_MEMORY = 0x20,
SI476X_ERR_BAD_PATCH = 0x30,
SI476X_ERR_BAD_BOOT_MODE = 0x31,
SI476X_ERR_BAD_PROPERTY = 0x40,
};
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
* @response: buffer to place the expected response from the device
* @respn: actual size of @response
* @usecs: amount of time to wait before reading the response (in
* usecs)
*
* Function returns 0 on succsess 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_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 succsess 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_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 succsess 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] = {
0x00,
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_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] = {
0x00,
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 be16_to_cpup((__be16 *)(resp + 2));
}
EXPORT_SYMBOL_GPL(si476x_core_cmd_get_property);
/**
* si476x_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 1MOhm 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 1MOhm 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 1MOhm 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 1MOhm 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_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 1MOhm pulldown
* SI476X_IQCLK_IQ - set pin to be a part of I/Q interace
* 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 1MOhm pulldown
* SI476X_IQFS_IQ - set pin to be a part of I/Q interace
* 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 1MOhm 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 1MOhm 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_cmd_ic_link_gpo_ctl_pin_cfg - send
* 'IC_LINK_GPIO_CTL_PIN_CFG' comand 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 1MOhm 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 1MOhm 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 1MOhm 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 1MOhm 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_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 1MOhm 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_cmd_intb_pin_cfg - 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 1MOhm 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 1MOhm 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_cmd_am_rsq_status - send 'AM_RSQ_STATUS' command to the
* device
* @core - device to send the command to
* @rsqack - if set command clears RSQINT, SNRINT, SNRLINT, RSSIHINT,
* RSSSILINT, BLENDINT, MULTHINT and MULTLINT
* @attune - when set the values in the status report are the values
* that were calculated at tune
* @cancel - abort ongoing seek/tune opertation
* @stcack - clear the STCINT bin in status register
* @report - all signal quality information retured 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 = 0b00001000 & resp[1];
report->snrlint = 0b00000100 & resp[1];
report->rssihint = 0b00000010 & resp[1];
report->rssilint = 0b00000001 & resp[1];
report->bltf = 0b10000000 & resp[2];
report->snr_ready = 0b00100000 & resp[2];
report->rssiready = 0b00001000 & resp[2];
report->afcrl = 0b00000010 & resp[2];
report->valid = 0b00000001 & resp[2];
report->readfreq = be16_to_cpup((__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] = {
0x0,
};
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] = {
0x0,
};
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_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_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.
*
* 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 = 0b00010000 & resp[1];
report->rdspiint = 0b00001000 & resp[1];
report->rdssyncint = 0b00000010 & resp[1];
report->rdsfifoint = 0b00000001 & resp[1];
report->tpptyvalid = 0b00010000 & resp[2];
report->pivalid = 0b00001000 & resp[2];
report->rdssync = 0b00000010 & resp[2];
report->rdsfifolost = 0b00000001 & resp[2];
report->tp = 0b00100000 & resp[3];
report->pty = 0b00011111 & resp[3];
report->pi = be16_to_cpup((__be16 *)(resp + 4));
report->rdsfifoused = resp[6];
report->ble[V4L2_RDS_BLOCK_A] = 0b11000000 & resp[7];
report->ble[V4L2_RDS_BLOCK_B] = 0b00110000 & resp[7];
report->ble[V4L2_RDS_BLOCK_C] = 0b00001100 & resp[7];
report->ble[V4L2_RDS_BLOCK_D] = 0b00000011 & 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 = be16_to_cpup((__be16 *)(resp + 2));
report->received = be16_to_cpup((__be16 *)(resp + 4));
report->uncorrectable = be16_to_cpup((__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 & 0b111,
};
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 failre.
*/
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_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] = {
0xF7, /* Reserved, always 0xF7 */
0x3F & puargs->xcload, /* First two bits are reserved to be
* zeros */
ctsen << 7 | intsel << 6 | 0x07, /* Last five bits
* are reserved to
* be written as 0x7 */
puargs->func << 4 | puargs->freq,
0x11, /* 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,
0x3F & 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,
0x10 | 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 & 0b11),
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 = 0b10000000 & resp[1];
report->multlint = 0b01000000 & resp[1];
report->snrhint = 0b00001000 & resp[1];
report->snrlint = 0b00000100 & resp[1];
report->rssihint = 0b00000010 & resp[1];
report->rssilint = 0b00000001 & resp[1];
report->bltf = 0b10000000 & resp[2];
report->snr_ready = 0b00100000 & resp[2];
report->rssiready = 0b00001000 & resp[2];
report->afcrl = 0b00000010 & resp[2];
report->valid = 0b00000001 & resp[2];
report->readfreq = be16_to_cpup((__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 = be16_to_cpup((__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 = 0b10000000 & resp[1];
report->multlint = 0b01000000 & resp[1];
report->snrhint = 0b00001000 & resp[1];
report->snrlint = 0b00000100 & resp[1];
report->rssihint = 0b00000010 & resp[1];
report->rssilint = 0b00000001 & resp[1];
report->bltf = 0b10000000 & resp[2];
report->snr_ready = 0b00100000 & resp[2];
report->rssiready = 0b00001000 & resp[2];
report->afcrl = 0b00000010 & resp[2];
report->valid = 0b00000001 & resp[2];
report->readfreq = be16_to_cpup((__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 = be16_to_cpup((__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 = 0b10000000 & resp[1];
report->multlint = 0b01000000 & resp[1];
report->snrhint = 0b00001000 & resp[1];
report->snrlint = 0b00000100 & resp[1];
report->rssihint = 0b00000010 & resp[1];
report->rssilint = 0b00000001 & resp[1];
report->bltf = 0b10000000 & resp[2];
report->snr_ready = 0b00100000 & resp[2];
report->rssiready = 0b00001000 & resp[2];
report->injside = 0b00000100 & resp[2];
report->afcrl = 0b00000010 & resp[2];
report->valid = 0b00000001 & resp[2];
report->readfreq = be16_to_cpup((__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 = be16_to_cpup((__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 = be16_to_cpup((__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");
drivers/mfd/si476x-i2c.c deleted 100644 → 0
View file @ cfc3d6c4
/*
* drivers/mfd/si476x-i2c.c -- Core device driver for si476x MFD
* device
*
* Copyright (C) 2012 Innovative Converged Devices(ICD)
* Copyright (C) 2013 Andrey Smirnov
*
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/mfd/si476x-core.h>
#define SI476X_MAX_IO_ERRORS 10
#define SI476X_DRIVER_RDS_FIFO_DEPTH 128
/**
* si476x_core_config_pinmux() - pin function configuration function
*
* @core: Core device structure
*
* Configure the functions of the pins of the radio chip.
*
* The function returns zero in case of succes or negative error code
* otherwise.
*/
static int si476x_core_config_pinmux(struct si476x_core *core)
{
int err;
dev_dbg(&core->client->dev, "Configuring pinmux\n");
err = si476x_core_cmd_dig_audio_pin_cfg(core,
core->pinmux.dclk,
core->pinmux.dfs,
core->pinmux.dout,
core->pinmux.xout);
if (err < 0) {
dev_err(&core->client->dev,
"Failed to configure digital audio pins(err = %d)\n",
err);
return err;
}
err = si476x_core_cmd_zif_pin_cfg(core,
core->pinmux.iqclk,
core->pinmux.iqfs,
core->pinmux.iout,
core->pinmux.qout);
if (err < 0) {
dev_err(&core->client->dev,
"Failed to configure ZIF pins(err = %d)\n",
err);
return err;
}
err = si476x_core_cmd_ic_link_gpo_ctl_pin_cfg(core,
core->pinmux.icin,
core->pinmux.icip,
core->pinmux.icon,
core->pinmux.icop);
if (err < 0) {
dev_err(&core->client->dev,
"Failed to configure IC-Link/GPO pins(err = %d)\n",
err);
return err;
}
err = si476x_core_cmd_ana_audio_pin_cfg(core,
core->pinmux.lrout);
if (err < 0) {
dev_err(&core->client->dev,
"Failed to configure analog audio pins(err = %d)\n",
err);
return err;
}
err = si476x_core_cmd_intb_pin_cfg(core,
core->pinmux.intb,
core->pinmux.a1);
if (err < 0) {
dev_err(&core->client->dev,
"Failed to configure interrupt pins(err = %d)\n",
err);
return err;
}
return 0;
}
static inline void si476x_core_schedule_polling_work(struct si476x_core *core)
{
schedule_delayed_work(&core->status_monitor,
usecs_to_jiffies(SI476X_STATUS_POLL_US));
}
/**
* si476x_core_start() - early chip startup function
* @core: Core device structure
* @soft: When set, this flag forces "soft" startup, where "soft"
* power down is the one done by sending appropriate command instead
* of using reset pin of the tuner
*
* Perform required startup sequence to correctly power
* up the chip and perform initial configuration. It does the
* following sequence of actions:
* 1. Claims and enables the power supplies VD and VIO1 required
* for I2C interface of the chip operation.
* 2. Waits for 100us, pulls the reset line up, enables irq,
* waits for another 100us as it is specified by the
* datasheet.
* 3. Sends 'POWER_UP' command to the device with all provided
* information about power-up parameters.
* 4. Configures, pin multiplexor, disables digital audio and
* configures interrupt sources.
*
* The function returns zero in case of succes or negative error code
* otherwise.
*/
int si476x_core_start(struct si476x_core *core, bool soft)
{
struct i2c_client *client = core->client;
int err;
if (!soft) {
if (gpio_is_valid(core->gpio_reset))
gpio_set_value_cansleep(core->gpio_reset, 1);
if (client->irq)
enable_irq(client->irq);
udelay(100);
if (!client->irq) {
atomic_set(&core->is_alive, 1);
si476x_core_schedule_polling_work(core);
}
} else {
if (client->irq)
enable_irq(client->irq);
else {
atomic_set(&core->is_alive, 1);
si476x_core_schedule_polling_work(core);
}
}
err = si476x_core_cmd_power_up(core,
&core->power_up_parameters);
if (err < 0) {
dev_err(&core->client->dev,
"Power up failure(err = %d)\n",
err);
goto disable_irq;
}
if (client->irq)
atomic_set(&core->is_alive, 1);
err = si476x_core_config_pinmux(core);
if (err < 0) {
dev_err(&core->client->dev,
"Failed to configure pinmux(err = %d)\n",
err);
goto disable_irq;
}
if (client->irq) {
err = regmap_write(core->regmap,
SI476X_PROP_INT_CTL_ENABLE,
SI476X_RDSIEN |
SI476X_STCIEN |
SI476X_CTSIEN);
if (err < 0) {
dev_err(&core->client->dev,
"Failed to configure interrupt sources"
"(err = %d)\n", err);
goto disable_irq;
}
}
return 0;
disable_irq:
if (err == -ENODEV)
atomic_set(&core->is_alive, 0);
if (client->irq)
disable_irq(client->irq);
else
cancel_delayed_work_sync(&core->status_monitor);
if (gpio_is_valid(core->gpio_reset))
gpio_set_value_cansleep(core->gpio_reset, 0);
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_start);
/**
* si476x_core_stop() - chip power-down function
* @core: Core device structure
* @soft: When set, function sends a POWER_DOWN command instead of
* bringing reset line low
*
* Power down the chip by performing following actions:
* 1. Disable IRQ or stop the polling worker
* 2. Send the POWER_DOWN command if the power down is soft or bring
* reset line low if not.
*
* The function returns zero in case of succes or negative error code
* otherwise.
*/
int si476x_core_stop(struct si476x_core *core, bool soft)
{
int err = 0;
atomic_set(&core->is_alive, 0);
if (soft) {
/* TODO: This probably shoud be a configurable option,
* so it is possible to have the chips keep their
* oscillators running
*/
struct si476x_power_down_args args = {
.xosc = false,
};
err = si476x_core_cmd_power_down(core, &args);
}
/* We couldn't disable those before
* 'si476x_core_cmd_power_down' since we expect to get CTS
* interrupt */
if (core->client->irq)
disable_irq(core->client->irq);
else
cancel_delayed_work_sync(&core->status_monitor);
if (!soft) {
if (gpio_is_valid(core->gpio_reset))
gpio_set_value_cansleep(core->gpio_reset, 0);
}
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_stop);
/**
* si476x_core_set_power_state() - set the level at which the power is
* supplied for the chip.
* @core: Core device structure
* @next_state: enum si476x_power_state describing power state to
* switch to.
*
* Switch on all the required power supplies
*
* This function returns 0 in case of suvccess and negative error code
* otherwise.
*/
int si476x_core_set_power_state(struct si476x_core *core,
enum si476x_power_state next_state)
{
/*
It is not clear form the datasheet if it is possible to
work with device if not all power domains are operational.
So for now the power-up policy is "power-up all the things!"
*/
int err = 0;
if (core->power_state == SI476X_POWER_INCONSISTENT) {
dev_err(&core->client->dev,
"The device in inconsistent power state\n");
return -EINVAL;
}
if (next_state != core->power_state) {
switch (next_state) {
case SI476X_POWER_UP_FULL:
err = regulator_bulk_enable(ARRAY_SIZE(core->supplies),
core->supplies);
if (err < 0) {
core->power_state = SI476X_POWER_INCONSISTENT;
break;
}
/*
* Startup timing diagram recommends to have a
* 100 us delay between enabling of the power
* supplies and turning the tuner on.
*/
udelay(100);
err = si476x_core_start(core, false);
if (err < 0)
goto disable_regulators;
core->power_state = next_state;
break;
case SI476X_POWER_DOWN:
core->power_state = next_state;
err = si476x_core_stop(core, false);
if (err < 0)
core->power_state = SI476X_POWER_INCONSISTENT;
disable_regulators:
err = regulator_bulk_disable(ARRAY_SIZE(core->supplies),
core->supplies);
if (err < 0)
core->power_state = SI476X_POWER_INCONSISTENT;
break;
default:
BUG();
}
}
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_set_power_state);
/**
* si476x_core_report_drainer_stop() - mark the completion of the RDS
* buffer drain porcess by the worker.
*
* @core: Core device structure
*/
static inline void si476x_core_report_drainer_stop(struct si476x_core *core)
{
mutex_lock(&core->rds_drainer_status_lock);
core->rds_drainer_is_working = false;
mutex_unlock(&core->rds_drainer_status_lock);
}
/**
* si476x_core_start_rds_drainer_once() - start RDS drainer worker if
* ther is none working, do nothing otherwise
*
* @core: Datastructure corresponding to the chip.
*/
static inline void si476x_core_start_rds_drainer_once(struct si476x_core *core)
{
mutex_lock(&core->rds_drainer_status_lock);
if (!core->rds_drainer_is_working) {
core->rds_drainer_is_working = true;
schedule_work(&core->rds_fifo_drainer);
}
mutex_unlock(&core->rds_drainer_status_lock);
}
/**
* si476x_drain_rds_fifo() - RDS buffer drainer.
* @work: struct work_struct being ppassed to the function by the
* kernel.
*
* Drain the contents of the RDS FIFO of
*/
static void si476x_core_drain_rds_fifo(struct work_struct *work)
{
int err;
struct si476x_core *core = container_of(work, struct si476x_core,
rds_fifo_drainer);
struct si476x_rds_status_report report;
si476x_core_lock(core);
err = si476x_core_cmd_fm_rds_status(core, true, false, false, &report);
if (!err) {
int i = report.rdsfifoused;
dev_dbg(&core->client->dev,
"%d elements in RDS FIFO. Draining.\n", i);
for (; i > 0; --i) {
err = si476x_core_cmd_fm_rds_status(core, false, false,
(i == 1), &report);
if (err < 0)
goto unlock;
kfifo_in(&core->rds_fifo, report.rds,
sizeof(report.rds));
dev_dbg(&core->client->dev, "RDS data:\n %*ph\n",
(int)sizeof(report.rds), report.rds);
}
dev_dbg(&core->client->dev, "Drrrrained!\n");
wake_up_interruptible(&core->rds_read_queue);
}
unlock:
si476x_core_unlock(core);
si476x_core_report_drainer_stop(core);
}
/**
* si476x_core_pronounce_dead()
*
* @core: Core device structure
*
* Mark the device as being dead and wake up all potentially waiting
* threads of execution.
*
*/
static void si476x_core_pronounce_dead(struct si476x_core *core)
{
dev_info(&core->client->dev, "Core device is dead.\n");
atomic_set(&core->is_alive, 0);
/* Wake up al possible waiting processes */
wake_up_interruptible(&core->rds_read_queue);
atomic_set(&core->cts, 1);
wake_up(&core->command);
atomic_set(&core->stc, 1);
wake_up(&core->tuning);
}
/**
* si476x_core_i2c_xfer()
*
* @core: Core device structure
* @type: Transfer type
* @buf: Transfer buffer for/with data
* @count: Transfer buffer size
*
* Perfrom and I2C transfer(either read or write) and keep a counter
* of I/O errors. If the error counter rises above the threshold
* pronounce device dead.
*
* The function returns zero on succes or negative error code on
* failure.
*/
int si476x_core_i2c_xfer(struct si476x_core *core,
enum si476x_i2c_type type,
char *buf, int count)
{
static int io_errors_count;
int err;
if (type == SI476X_I2C_SEND)
err = i2c_master_send(core->client, buf, count);
else
err = i2c_master_recv(core->client, buf, count);
if (err < 0) {
if (io_errors_count++ > SI476X_MAX_IO_ERRORS)
si476x_core_pronounce_dead(core);
} else {
io_errors_count = 0;
}
return err;
}
EXPORT_SYMBOL_GPL(si476x_core_i2c_xfer);
/**
* si476x_get_status()
* @core: Core device structure
*
* Get the status byte of the core device by berforming one byte I2C
* read.
*
* The function returns a status value or a negative error code on
* error.
*/
static int si476x_core_get_status(struct si476x_core *core)
{
u8 response;
int err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV,
&response, sizeof(response));
return (err < 0) ? err : response;
}
/**
* si476x_get_and_signal_status() - IRQ dispatcher
* @core: Core device structure
*
* Dispatch the arrived interrupt request based on the value of the
* status byte reported by the tuner.
*
*/
static void si476x_core_get_and_signal_status(struct si476x_core *core)
{
int status = si476x_core_get_status(core);
if (status < 0) {
dev_err(&core->client->dev, "Failed to get status\n");
return;
}
if (status & SI476X_CTS) {
/* Unfortunately completions could not be used for
* signalling CTS since this flag cannot be cleared
* in status byte, and therefore once it becomes true
* multiple calls to 'complete' would cause the
* commands following the current one to be completed
* before they actually are */
dev_dbg(&core->client->dev, "[interrupt] CTSINT\n");
atomic_set(&core->cts, 1);
wake_up(&core->command);
}
if (status & SI476X_FM_RDS_INT) {
dev_dbg(&core->client->dev, "[interrupt] RDSINT\n");
si476x_core_start_rds_drainer_once(core);
}
if (status & SI476X_STC_INT) {
dev_dbg(&core->client->dev, "[interrupt] STCINT\n");
atomic_set(&core->stc, 1);
wake_up(&core->tuning);
}
}
static void si476x_core_poll_loop(struct work_struct *work)
{
struct si476x_core *core = SI476X_WORK_TO_CORE(work);
si476x_core_get_and_signal_status(core);
if (atomic_read(&core->is_alive))
si476x_core_schedule_polling_work(core);
}
static irqreturn_t si476x_core_interrupt(int irq, void *dev)
{
struct si476x_core *core = dev;
si476x_core_get_and_signal_status(core);
return IRQ_HANDLED;
}
/**
* si476x_firmware_version_to_revision()
* @core: Core device structure
* @major: Firmware major number
* @minor1: Firmware first minor number
* @minor2: Firmware second minor number
*
* Convert a chip's firmware version number into an offset that later
* will be used to as offset in "vtable" of tuner functions
*
* This function returns a positive offset in case of success and a -1
* in case of failure.
*/
static int si476x_core_fwver_to_revision(struct si476x_core *core,
int func, int major,
int minor1, int minor2)
{
switch (func) {
case SI476X_FUNC_FM_RECEIVER:
switch (major) {
case 5:
return SI476X_REVISION_A10;
case 8:
return SI476X_REVISION_A20;
case 10:
return SI476X_REVISION_A30;
default:
goto unknown_revision;
}
case SI476X_FUNC_AM_RECEIVER:
switch (major) {
case 5:
return SI476X_REVISION_A10;
case 7:
return SI476X_REVISION_A20;
case 9:
return SI476X_REVISION_A30;
default:
goto unknown_revision;
}
case SI476X_FUNC_WB_RECEIVER:
switch (major) {
case 3:
return SI476X_REVISION_A10;
case 5:
return SI476X_REVISION_A20;
case 7:
return SI476X_REVISION_A30;
default:
goto unknown_revision;
}
case SI476X_FUNC_BOOTLOADER:
default: /* FALLTHROUG */
BUG();
return -1;
}
unknown_revision:
dev_err(&core->client->dev,
"Unsupported version of the firmware: %d.%d.%d, "
"reverting to A10 comptible functions\n",
major, minor1, minor2);
return SI476X_REVISION_A10;
}
/**
* si476x_get_revision_info()
* @core: Core device structure
*
* Get the firmware version number of the device. It is done in
* following three steps:
* 1. Power-up the device
* 2. Send the 'FUNC_INFO' command
* 3. Powering the device down.
*
* The function return zero on success and a negative error code on
* failure.
*/
static int si476x_core_get_revision_info(struct si476x_core *core)
{
int rval;
struct si476x_func_info info;
si476x_core_lock(core);
rval = si476x_core_set_power_state(core, SI476X_POWER_UP_FULL);
if (rval < 0)
goto exit;
rval = si476x_core_cmd_func_info(core, &info);
if (rval < 0)
goto power_down;
core->revision = si476x_core_fwver_to_revision(core, info.func,
info.firmware.major,
info.firmware.minor[0],
info.firmware.minor[1]);
power_down:
si476x_core_set_power_state(core, SI476X_POWER_DOWN);
exit:
si476x_core_unlock(core);
return rval;
}
bool si476x_core_has_am(struct si476x_core *core)
{
return core->chip_id == SI476X_CHIP_SI4761 ||
core->chip_id == SI476X_CHIP_SI4764;
}
EXPORT_SYMBOL_GPL(si476x_core_has_am);
bool si476x_core_has_diversity(struct si476x_core *core)
{
return core->chip_id == SI476X_CHIP_SI4764;
}
EXPORT_SYMBOL_GPL(si476x_core_has_diversity);
bool si476x_core_is_a_secondary_tuner(struct si476x_core *core)
{
return si476x_core_has_diversity(core) &&
(core->diversity_mode == SI476X_PHDIV_SECONDARY_ANTENNA ||
core->diversity_mode == SI476X_PHDIV_SECONDARY_COMBINING);
}
EXPORT_SYMBOL_GPL(si476x_core_is_a_secondary_tuner);
bool si476x_core_is_a_primary_tuner(struct si476x_core *core)
{
return si476x_core_has_diversity(core) &&
(core->diversity_mode == SI476X_PHDIV_PRIMARY_ANTENNA ||
core->diversity_mode == SI476X_PHDIV_PRIMARY_COMBINING);
}
EXPORT_SYMBOL_GPL(si476x_core_is_a_primary_tuner);
bool si476x_core_is_in_am_receiver_mode(struct si476x_core *core)
{
return si476x_core_has_am(core) &&
(core->power_up_parameters.func == SI476X_FUNC_AM_RECEIVER);
}
EXPORT_SYMBOL_GPL(si476x_core_is_in_am_receiver_mode);
bool si476x_core_is_powered_up(struct si476x_core *core)
{
return core->power_state == SI476X_POWER_UP_FULL;
}
EXPORT_SYMBOL_GPL(si476x_core_is_powered_up);
static int si476x_core_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int rval;
struct si476x_core *core;
struct si476x_platform_data *pdata;
struct mfd_cell *cell;
int cell_num;
core = devm_kzalloc(&client->dev, sizeof(*core), GFP_KERNEL);
if (!core) {
dev_err(&client->dev,
"failed to allocate 'struct si476x_core'\n");
return -ENOMEM;
}
core->client = client;
core->regmap = devm_regmap_init_si476x(core);
if (IS_ERR(core->regmap)) {
rval = PTR_ERR(core->regmap);
dev_err(&client->dev,
"Failed to allocate register map: %d\n",
rval);
return rval;
}
i2c_set_clientdata(client, core);
atomic_set(&core->is_alive, 0);
core->power_state = SI476X_POWER_DOWN;
pdata = client->dev.platform_data;
if (pdata) {
memcpy(&core->power_up_parameters,
&pdata->power_up_parameters,
sizeof(core->power_up_parameters));
core->gpio_reset = -1;
if (gpio_is_valid(pdata->gpio_reset)) {
rval = gpio_request(pdata->gpio_reset, "si476x reset");
if (rval) {
dev_err(&client->dev,
"Failed to request gpio: %d\n", rval);
return rval;
}
core->gpio_reset = pdata->gpio_reset;
gpio_direction_output(core->gpio_reset, 0);
}
core->diversity_mode = pdata->diversity_mode;
memcpy(&core->pinmux, &pdata->pinmux,
sizeof(struct si476x_pinmux));
} else {
dev_err(&client->dev, "No platform data provided\n");
return -EINVAL;
}
core->supplies[0].supply = "vd";
core->supplies[1].supply = "va";
core->supplies[2].supply = "vio1";
core->supplies[3].supply = "vio2";
rval = devm_regulator_bulk_get(&client->dev,
ARRAY_SIZE(core->supplies),
core->supplies);
if (rval) {
dev_err(&client->dev, "Failet to gett all of the regulators\n");
goto free_gpio;
}
mutex_init(&core->cmd_lock);
init_waitqueue_head(&core->command);
init_waitqueue_head(&core->tuning);
rval = kfifo_alloc(&core->rds_fifo,
SI476X_DRIVER_RDS_FIFO_DEPTH *
sizeof(struct v4l2_rds_data),
GFP_KERNEL);
if (rval) {
dev_err(&client->dev, "Could not alloate the FIFO\n");
goto free_gpio;
}
mutex_init(&core->rds_drainer_status_lock);
init_waitqueue_head(&core->rds_read_queue);
INIT_WORK(&core->rds_fifo_drainer, si476x_core_drain_rds_fifo);
if (client->irq) {
rval = devm_request_threaded_irq(&client->dev,
client->irq, NULL,
si476x_core_interrupt,
IRQF_TRIGGER_FALLING,
client->name, core);
if (rval < 0) {
dev_err(&client->dev, "Could not request IRQ %d\n",
client->irq);
goto free_kfifo;
}
disable_irq(client->irq);
dev_dbg(&client->dev, "IRQ requested.\n");
core->rds_fifo_depth = 20;
} else {
INIT_DELAYED_WORK(&core->status_monitor,
si476x_core_poll_loop);
dev_info(&client->dev,
"No IRQ number specified, will use polling\n");
core->rds_fifo_depth = 5;
}
core->chip_id = id->driver_data;
rval = si476x_core_get_revision_info(core);
if (rval < 0) {
rval = -ENODEV;
goto free_kfifo;
}
cell_num = 0;
cell = &core->cells[SI476X_RADIO_CELL];
cell->name = "si476x-radio";
cell_num++;
#ifdef CONFIG_SND_SOC_SI476X
if ((core->chip_id == SI476X_CHIP_SI4761 ||
core->chip_id == SI476X_CHIP_SI4764) &&
core->pinmux.dclk == SI476X_DCLK_DAUDIO &&
core->pinmux.dfs == SI476X_DFS_DAUDIO &&
core->pinmux.dout == SI476X_DOUT_I2S_OUTPUT &&
core->pinmux.xout == SI476X_XOUT_TRISTATE) {
cell = &core->cells[SI476X_CODEC_CELL];
cell->name = "si476x-codec";
cell_num++;
}
#endif
rval = mfd_add_devices(&client->dev,
(client->adapter->nr << 8) + client->addr,
core->cells, cell_num,
NULL, 0, NULL);
if (!rval)
return 0;
free_kfifo:
kfifo_free(&core->rds_fifo);
free_gpio:
if (gpio_is_valid(core->gpio_reset))
gpio_free(core->gpio_reset);
return rval;
}
static int si476x_core_remove(struct i2c_client *client)
{
struct si476x_core *core = i2c_get_clientdata(client);
si476x_core_pronounce_dead(core);
mfd_remove_devices(&client->dev);
if (client->irq)
disable_irq(client->irq);
else
cancel_delayed_work_sync(&core->status_monitor);
kfifo_free(&core->rds_fifo);
if (gpio_is_valid(core->gpio_reset))
gpio_free(core->gpio_reset);
return 0;
}
static const struct i2c_device_id si476x_id[] = {
{ "si4761", SI476X_CHIP_SI4761 },
{ "si4764", SI476X_CHIP_SI4764 },
{ "si4768", SI476X_CHIP_SI4768 },
{ },
};
MODULE_DEVICE_TABLE(i2c, si476x_id);
static struct i2c_driver si476x_core_driver = {
.driver = {
.name = "si476x-core",
.owner = THIS_MODULE,
},
.probe = si476x_core_probe,
.remove = si476x_core_remove,
.id_table = si476x_id,
};
module_i2c_driver(si476x_core_driver);
MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
MODULE_DESCRIPTION("Si4761/64/68 AM/FM MFD core device driver");
MODULE_LICENSE("GPL");
drivers/mfd/si476x-prop.c deleted 100644 → 0
View file @ cfc3d6c4
/*
* drivers/mfd/si476x-prop.c -- Subroutines to access
* properties of si476x chips
*
* Copyright (C) 2012 Innovative Converged Devices(ICD)
* Copyright (C) 2013 Andrey Smirnov
*
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/module.h>
#include <media/si476x.h>
#include <linux/mfd/si476x-core.h>
struct si476x_property_range {
u16 low, high;
};
static bool si476x_core_element_is_in_array(u16 element,
const u16 array[],
size_t size)
{
int i;
for (i = 0; i < size; i++)
if (element == array[i])
return true;
return false;
}
static bool si476x_core_element_is_in_range(u16 element,
const struct si476x_property_range range[],
size_t size)
{
int i;
for (i = 0; i < size; i++)
if (element <= range[i].high && element >= range[i].low)
return true;
return false;
}
static bool si476x_core_is_valid_property_a10(struct si476x_core *core,
u16 property)
{
static const u16 valid_properties[] = {
0x0000,
0x0500, 0x0501,
0x0600,
0x0709, 0x070C, 0x070D, 0x70E, 0x710,
0x0718,
0x1207, 0x1208,
0x2007,
0x2300,
};
static const struct si476x_property_range valid_ranges[] = {
{ 0x0200, 0x0203 },
{ 0x0300, 0x0303 },
{ 0x0400, 0x0404 },
{ 0x0700, 0x0707 },
{ 0x1100, 0x1102 },
{ 0x1200, 0x1204 },
{ 0x1300, 0x1306 },
{ 0x2000, 0x2005 },
{ 0x2100, 0x2104 },
{ 0x2106, 0x2106 },
{ 0x2200, 0x220E },
{ 0x3100, 0x3104 },
{ 0x3207, 0x320F },
{ 0x3300, 0x3304 },
{ 0x3500, 0x3517 },
{ 0x3600, 0x3617 },
{ 0x3700, 0x3717 },
{ 0x4000, 0x4003 },
};
return si476x_core_element_is_in_range(property, valid_ranges,
ARRAY_SIZE(valid_ranges)) ||
si476x_core_element_is_in_array(property, valid_properties,
ARRAY_SIZE(valid_properties));
}
static bool si476x_core_is_valid_property_a20(struct si476x_core *core,
u16 property)
{
static const u16 valid_properties[] = {
0x071B,
0x1006,
0x2210,
0x3401,
};
static const struct si476x_property_range valid_ranges[] = {
{ 0x2215, 0x2219 },
};
return si476x_core_is_valid_property_a10(core, property) ||
si476x_core_element_is_in_range(property, valid_ranges,
ARRAY_SIZE(valid_ranges)) ||
si476x_core_element_is_in_array(property, valid_properties,
ARRAY_SIZE(valid_properties));
}
static bool si476x_core_is_valid_property_a30(struct si476x_core *core,
u16 property)
{
static const u16 valid_properties[] = {
0x071C, 0x071D,
0x1007, 0x1008,
0x220F, 0x2214,
0x2301,
0x3105, 0x3106,
0x3402,
};
static const struct si476x_property_range valid_ranges[] = {
{ 0x0405, 0x0411 },
{ 0x2008, 0x200B },
{ 0x2220, 0x2223 },
{ 0x3100, 0x3106 },
};
return si476x_core_is_valid_property_a20(core, property) ||
si476x_core_element_is_in_range(property, valid_ranges,
ARRAY_SIZE(valid_ranges)) ||
si476x_core_element_is_in_array(property, valid_properties,
ARRAY_SIZE(valid_properties));
}
typedef bool (*valid_property_pred_t) (struct si476x_core *, u16);
static bool si476x_core_is_valid_property(struct si476x_core *core,
u16 property)
{
static const valid_property_pred_t is_valid_property[] = {
[SI476X_REVISION_A10] = si476x_core_is_valid_property_a10,
[SI476X_REVISION_A20] = si476x_core_is_valid_property_a20,
[SI476X_REVISION_A30] = si476x_core_is_valid_property_a30,
};
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1);
return is_valid_property[core->revision](core, property);
}
static bool si476x_core_is_readonly_property(struct si476x_core *core,
u16 property)
{
BUG_ON(core->revision > SI476X_REVISION_A30 ||
core->revision == -1);
switch (core->revision) {
case SI476X_REVISION_A10:
return (property == 0x3200);
case SI476X_REVISION_A20:
return (property == 0x1006 ||
property == 0x2210 ||
property == 0x3200);
case SI476X_REVISION_A30:
return false;
}
return false;
}
static bool si476x_core_regmap_readable_register(struct device *dev,
unsigned int reg)
{
struct i2c_client *client = to_i2c_client(dev);
struct si476x_core *core = i2c_get_clientdata(client);
return si476x_core_is_valid_property(core, (u16) reg);
}
static bool si476x_core_regmap_writable_register(struct device *dev,
unsigned int reg)
{
struct i2c_client *client = to_i2c_client(dev);
struct si476x_core *core = i2c_get_clientdata(client);
return si476x_core_is_valid_property(core, (u16) reg) &&
!si476x_core_is_readonly_property(core, (u16) reg);
}
static int si476x_core_regmap_write(void *context, unsigned int reg,
unsigned int val)
{
return si476x_core_cmd_set_property(context, reg, val);
}
static int si476x_core_regmap_read(void *context, unsigned int reg,
unsigned *val)
{
struct si476x_core *core = context;
int err;
err = si476x_core_cmd_get_property(core, reg);
if (err < 0)
return err;
*val = err;
return 0;
}
static const struct regmap_config si476x_regmap_config = {
.reg_bits = 16,
.val_bits = 16,
.max_register = 0x4003,
.writeable_reg = si476x_core_regmap_writable_register,
.readable_reg = si476x_core_regmap_readable_register,
.reg_read = si476x_core_regmap_read,
.reg_write = si476x_core_regmap_write,
.cache_type = REGCACHE_RBTREE,
};
struct regmap *devm_regmap_init_si476x(struct si476x_core *core)
{
return devm_regmap_init(&core->client->dev, NULL,
core, &si476x_regmap_config);
}
EXPORT_SYMBOL_GPL(devm_regmap_init_si476x);
include/media/si476x.h 0 → 100644
View file @ 966a1601
/*
* include/media/si476x.h -- Common definitions for si476x driver
*
* Copyright (C) 2012 Innovative Converged Devices(ICD)
* Copyright (C) 2013 Andrey Smirnov
*
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#ifndef SI476X_H
#define SI476X_H
#include <linux/types.h>
#include <linux/videodev2.h>
#include <linux/mfd/si476x-reports.h>
enum si476x_ctrl_id {
V4L2_CID_SI476X_RSSI_THRESHOLD = (V4L2_CID_USER_SI476X_BASE + 1),
V4L2_CID_SI476X_SNR_THRESHOLD = (V4L2_CID_USER_SI476X_BASE + 2),
V4L2_CID_SI476X_MAX_TUNE_ERROR = (V4L2_CID_USER_SI476X_BASE + 3),
V4L2_CID_SI476X_HARMONICS_COUNT = (V4L2_CID_USER_SI476X_BASE + 4),
V4L2_CID_SI476X_DIVERSITY_MODE = (V4L2_CID_USER_SI476X_BASE + 5),
V4L2_CID_SI476X_INTERCHIP_LINK = (V4L2_CID_USER_SI476X_BASE + 6),
};
#endif /* SI476X_H*/
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