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ed4a8fe892
This patch adds all the functions used for exchanging commands with the chip. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
1554 lines
46 KiB
C
1554 lines
46 KiB
C
/*
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* drivers/mfd/si476x-cmd.c -- Subroutines implementing command
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* protocol of si476x series of chips
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*
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* Copyright (C) 2012 Innovative Converged Devices(ICD)
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* Copyright (C) 2013 Andrey Smirnov
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*
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* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/completion.h>
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#include <linux/delay.h>
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#include <linux/atomic.h>
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#include <linux/i2c.h>
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#include <linux/device.h>
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#include <linux/gpio.h>
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#include <linux/videodev2.h>
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#include <linux/mfd/si476x-core.h>
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#define msb(x) ((u8)((u16) x >> 8))
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#define lsb(x) ((u8)((u16) x & 0x00FF))
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#define CMD_POWER_UP 0x01
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#define CMD_POWER_UP_A10_NRESP 1
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#define CMD_POWER_UP_A10_NARGS 5
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#define CMD_POWER_UP_A20_NRESP 1
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#define CMD_POWER_UP_A20_NARGS 5
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#define POWER_UP_DELAY_MS 110
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#define CMD_POWER_DOWN 0x11
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#define CMD_POWER_DOWN_A10_NRESP 1
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#define CMD_POWER_DOWN_A20_NRESP 1
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#define CMD_POWER_DOWN_A20_NARGS 1
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#define CMD_FUNC_INFO 0x12
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#define CMD_FUNC_INFO_NRESP 7
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#define CMD_SET_PROPERTY 0x13
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#define CMD_SET_PROPERTY_NARGS 5
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#define CMD_SET_PROPERTY_NRESP 1
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#define CMD_GET_PROPERTY 0x14
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#define CMD_GET_PROPERTY_NARGS 3
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#define CMD_GET_PROPERTY_NRESP 4
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#define CMD_AGC_STATUS 0x17
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#define CMD_AGC_STATUS_NRESP_A10 2
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#define CMD_AGC_STATUS_NRESP_A20 6
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#define PIN_CFG_BYTE(x) (0x7F & (x))
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#define CMD_DIG_AUDIO_PIN_CFG 0x18
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#define CMD_DIG_AUDIO_PIN_CFG_NARGS 4
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#define CMD_DIG_AUDIO_PIN_CFG_NRESP 5
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#define CMD_ZIF_PIN_CFG 0x19
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#define CMD_ZIF_PIN_CFG_NARGS 4
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#define CMD_ZIF_PIN_CFG_NRESP 5
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#define CMD_IC_LINK_GPO_CTL_PIN_CFG 0x1A
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#define CMD_IC_LINK_GPO_CTL_PIN_CFG_NARGS 4
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#define CMD_IC_LINK_GPO_CTL_PIN_CFG_NRESP 5
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#define CMD_ANA_AUDIO_PIN_CFG 0x1B
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#define CMD_ANA_AUDIO_PIN_CFG_NARGS 1
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#define CMD_ANA_AUDIO_PIN_CFG_NRESP 2
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#define CMD_INTB_PIN_CFG 0x1C
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#define CMD_INTB_PIN_CFG_NARGS 2
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#define CMD_INTB_PIN_CFG_A10_NRESP 6
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#define CMD_INTB_PIN_CFG_A20_NRESP 3
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#define CMD_FM_TUNE_FREQ 0x30
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#define CMD_FM_TUNE_FREQ_A10_NARGS 5
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#define CMD_FM_TUNE_FREQ_A20_NARGS 3
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#define CMD_FM_TUNE_FREQ_NRESP 1
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#define CMD_FM_RSQ_STATUS 0x32
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#define CMD_FM_RSQ_STATUS_A10_NARGS 1
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#define CMD_FM_RSQ_STATUS_A10_NRESP 17
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#define CMD_FM_RSQ_STATUS_A30_NARGS 1
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#define CMD_FM_RSQ_STATUS_A30_NRESP 23
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#define CMD_FM_SEEK_START 0x31
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#define CMD_FM_SEEK_START_NARGS 1
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#define CMD_FM_SEEK_START_NRESP 1
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#define CMD_FM_RDS_STATUS 0x36
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#define CMD_FM_RDS_STATUS_NARGS 1
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#define CMD_FM_RDS_STATUS_NRESP 16
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#define CMD_FM_RDS_BLOCKCOUNT 0x37
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#define CMD_FM_RDS_BLOCKCOUNT_NARGS 1
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#define CMD_FM_RDS_BLOCKCOUNT_NRESP 8
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#define CMD_FM_PHASE_DIVERSITY 0x38
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#define CMD_FM_PHASE_DIVERSITY_NARGS 1
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#define CMD_FM_PHASE_DIVERSITY_NRESP 1
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#define CMD_FM_PHASE_DIV_STATUS 0x39
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#define CMD_FM_PHASE_DIV_STATUS_NRESP 2
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#define CMD_AM_TUNE_FREQ 0x40
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#define CMD_AM_TUNE_FREQ_NARGS 3
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#define CMD_AM_TUNE_FREQ_NRESP 1
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#define CMD_AM_RSQ_STATUS 0x42
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#define CMD_AM_RSQ_STATUS_NARGS 1
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#define CMD_AM_RSQ_STATUS_NRESP 13
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#define CMD_AM_SEEK_START 0x41
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#define CMD_AM_SEEK_START_NARGS 1
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#define CMD_AM_SEEK_START_NRESP 1
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#define CMD_AM_ACF_STATUS 0x45
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#define CMD_AM_ACF_STATUS_NRESP 6
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#define CMD_AM_ACF_STATUS_NARGS 1
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#define CMD_FM_ACF_STATUS 0x35
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#define CMD_FM_ACF_STATUS_NRESP 8
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#define CMD_FM_ACF_STATUS_NARGS 1
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#define CMD_MAX_ARGS_COUNT (10)
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enum si476x_acf_status_report_bits {
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SI476X_ACF_BLEND_INT = (1 << 4),
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SI476X_ACF_HIBLEND_INT = (1 << 3),
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SI476X_ACF_HICUT_INT = (1 << 2),
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SI476X_ACF_CHBW_INT = (1 << 1),
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SI476X_ACF_SOFTMUTE_INT = (1 << 0),
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SI476X_ACF_SMUTE = (1 << 0),
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SI476X_ACF_SMATTN = 0b11111,
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SI476X_ACF_PILOT = (1 << 7),
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SI476X_ACF_STBLEND = ~SI476X_ACF_PILOT,
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};
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enum si476x_agc_status_report_bits {
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SI476X_AGC_MXHI = (1 << 5),
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SI476X_AGC_MXLO = (1 << 4),
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SI476X_AGC_LNAHI = (1 << 3),
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SI476X_AGC_LNALO = (1 << 2),
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};
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enum si476x_errors {
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SI476X_ERR_BAD_COMMAND = 0x10,
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SI476X_ERR_BAD_ARG1 = 0x11,
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SI476X_ERR_BAD_ARG2 = 0x12,
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SI476X_ERR_BAD_ARG3 = 0x13,
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SI476X_ERR_BAD_ARG4 = 0x14,
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SI476X_ERR_BUSY = 0x18,
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SI476X_ERR_BAD_INTERNAL_MEMORY = 0x20,
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SI476X_ERR_BAD_PATCH = 0x30,
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SI476X_ERR_BAD_BOOT_MODE = 0x31,
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SI476X_ERR_BAD_PROPERTY = 0x40,
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};
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static int si476x_core_parse_and_nag_about_error(struct si476x_core *core)
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{
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int err;
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char *cause;
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u8 buffer[2];
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if (core->revision != SI476X_REVISION_A10) {
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err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV,
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buffer, sizeof(buffer));
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if (err == sizeof(buffer)) {
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switch (buffer[1]) {
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case SI476X_ERR_BAD_COMMAND:
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cause = "Bad command";
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err = -EINVAL;
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break;
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case SI476X_ERR_BAD_ARG1:
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cause = "Bad argument #1";
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err = -EINVAL;
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break;
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case SI476X_ERR_BAD_ARG2:
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cause = "Bad argument #2";
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err = -EINVAL;
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break;
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case SI476X_ERR_BAD_ARG3:
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cause = "Bad argument #3";
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err = -EINVAL;
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break;
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case SI476X_ERR_BAD_ARG4:
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cause = "Bad argument #4";
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err = -EINVAL;
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break;
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case SI476X_ERR_BUSY:
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cause = "Chip is busy";
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err = -EBUSY;
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break;
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case SI476X_ERR_BAD_INTERNAL_MEMORY:
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cause = "Bad internal memory";
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err = -EIO;
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break;
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case SI476X_ERR_BAD_PATCH:
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cause = "Bad patch";
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err = -EINVAL;
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break;
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case SI476X_ERR_BAD_BOOT_MODE:
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cause = "Bad boot mode";
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err = -EINVAL;
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break;
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case SI476X_ERR_BAD_PROPERTY:
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cause = "Bad property";
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err = -EINVAL;
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break;
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default:
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cause = "Unknown";
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err = -EIO;
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}
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dev_err(&core->client->dev,
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"[Chip error status]: %s\n", cause);
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} else {
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dev_err(&core->client->dev,
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"Failed to fetch error code\n");
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err = (err >= 0) ? -EIO : err;
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}
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} else {
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err = -EIO;
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}
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return err;
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}
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/**
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* si476x_core_send_command() - sends a command to si476x and waits its
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* response
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* @core: si476x_device structure for the device we are
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* communicating with
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* @command: command id
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* @args: command arguments we are sending
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* @argn: actual size of @args
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* @response: buffer to place the expected response from the device
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* @respn: actual size of @response
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* @usecs: amount of time to wait before reading the response (in
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* usecs)
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*
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* Function returns 0 on succsess and negative error code on
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* failure
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*/
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static int si476x_core_send_command(struct si476x_core *core,
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const u8 command,
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const u8 args[],
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const int argn,
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u8 resp[],
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const int respn,
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const int usecs)
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{
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struct i2c_client *client = core->client;
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int err;
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u8 data[CMD_MAX_ARGS_COUNT + 1];
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if (argn > CMD_MAX_ARGS_COUNT) {
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err = -ENOMEM;
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goto exit;
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}
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if (!client->adapter) {
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err = -ENODEV;
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goto exit;
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}
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/* First send the command and its arguments */
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data[0] = command;
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memcpy(&data[1], args, argn);
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dev_dbg(&client->dev, "Command:\n %*ph\n", argn + 1, data);
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err = si476x_core_i2c_xfer(core, SI476X_I2C_SEND,
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(char *) data, argn + 1);
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if (err != argn + 1) {
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dev_err(&core->client->dev,
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"Error while sending command 0x%02x\n",
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command);
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err = (err >= 0) ? -EIO : err;
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goto exit;
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}
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/* Set CTS to zero only after the command is send to avoid
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* possible racing conditions when working in polling mode */
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atomic_set(&core->cts, 0);
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/* if (unlikely(command == CMD_POWER_DOWN) */
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if (!wait_event_timeout(core->command,
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atomic_read(&core->cts),
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usecs_to_jiffies(usecs) + 1))
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dev_warn(&core->client->dev,
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"(%s) [CMD 0x%02x] Answer timeout.\n",
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__func__, command);
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/*
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When working in polling mode, for some reason the tuner will
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report CTS bit as being set in the first status byte read,
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but all the consequtive ones will return zeros until the
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tuner is actually completed the POWER_UP command. To
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workaround that we wait for second CTS to be reported
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*/
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if (unlikely(!core->client->irq && command == CMD_POWER_UP)) {
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if (!wait_event_timeout(core->command,
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atomic_read(&core->cts),
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usecs_to_jiffies(usecs) + 1))
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dev_warn(&core->client->dev,
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"(%s) Power up took too much time.\n",
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__func__);
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}
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/* Then get the response */
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err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV, resp, respn);
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if (err != respn) {
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dev_err(&core->client->dev,
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"Error while reading response for command 0x%02x\n",
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command);
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err = (err >= 0) ? -EIO : err;
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goto exit;
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}
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dev_dbg(&client->dev, "Response:\n %*ph\n", respn, resp);
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err = 0;
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if (resp[0] & SI476X_ERR) {
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dev_err(&core->client->dev,
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"[CMD 0x%02x] Chip set error flag\n", command);
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err = si476x_core_parse_and_nag_about_error(core);
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goto exit;
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}
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if (!(resp[0] & SI476X_CTS))
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err = -EBUSY;
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exit:
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return err;
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}
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static int si476x_cmd_clear_stc(struct si476x_core *core)
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{
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int err;
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struct si476x_rsq_status_args args = {
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.primary = false,
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.rsqack = false,
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.attune = false,
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.cancel = false,
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.stcack = true,
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};
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switch (core->power_up_parameters.func) {
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case SI476X_FUNC_FM_RECEIVER:
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err = si476x_core_cmd_fm_rsq_status(core, &args, NULL);
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break;
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case SI476X_FUNC_AM_RECEIVER:
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err = si476x_core_cmd_am_rsq_status(core, &args, NULL);
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break;
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default:
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err = -EINVAL;
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}
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return err;
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}
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static int si476x_cmd_tune_seek_freq(struct si476x_core *core,
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uint8_t cmd,
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const uint8_t args[], size_t argn,
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uint8_t *resp, size_t respn)
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{
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int err;
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atomic_set(&core->stc, 0);
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err = si476x_core_send_command(core, cmd, args, argn, resp, respn,
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SI476X_TIMEOUT_TUNE);
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if (!err) {
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wait_event_killable(core->tuning,
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atomic_read(&core->stc));
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si476x_cmd_clear_stc(core);
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}
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return err;
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}
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/**
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* si476x_cmd_func_info() - send 'FUNC_INFO' command to the device
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* @core: device to send the command to
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* @info: struct si476x_func_info to fill all the information
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* returned by the command
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*
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* The command requests the firmware and patch version for currently
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* loaded firmware (dependent on the function of the device FM/AM/WB)
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*
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* Function returns 0 on succsess and negative error code on
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* failure
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*/
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int si476x_core_cmd_func_info(struct si476x_core *core,
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struct si476x_func_info *info)
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{
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int err;
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u8 resp[CMD_FUNC_INFO_NRESP];
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err = si476x_core_send_command(core, CMD_FUNC_INFO,
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NULL, 0,
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resp, ARRAY_SIZE(resp),
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SI476X_DEFAULT_TIMEOUT);
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info->firmware.major = resp[1];
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info->firmware.minor[0] = resp[2];
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info->firmware.minor[1] = resp[3];
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info->patch_id = ((u16) resp[4] << 8) | resp[5];
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info->func = resp[6];
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return err;
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}
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EXPORT_SYMBOL_GPL(si476x_core_cmd_func_info);
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/**
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* si476x_cmd_set_property() - send 'SET_PROPERTY' command to the device
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* @core: device to send the command to
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* @property: property address
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* @value: property value
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*
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* Function returns 0 on succsess and negative error code on
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* failure
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*/
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int si476x_core_cmd_set_property(struct si476x_core *core,
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u16 property, u16 value)
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{
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u8 resp[CMD_SET_PROPERTY_NRESP];
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const u8 args[CMD_SET_PROPERTY_NARGS] = {
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0x00,
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msb(property),
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lsb(property),
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msb(value),
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lsb(value),
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};
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return si476x_core_send_command(core, CMD_SET_PROPERTY,
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args, ARRAY_SIZE(args),
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resp, ARRAY_SIZE(resp),
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SI476X_DEFAULT_TIMEOUT);
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}
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EXPORT_SYMBOL_GPL(si476x_core_cmd_set_property);
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|
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/**
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* si476x_cmd_get_property() - send 'GET_PROPERTY' command to the device
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* @core: device to send the command to
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* @property: property address
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*
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* Function return the value of property as u16 on success or a
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* negative error on failure
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*/
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int si476x_core_cmd_get_property(struct si476x_core *core, u16 property)
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{
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int err;
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u8 resp[CMD_GET_PROPERTY_NRESP];
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const u8 args[CMD_GET_PROPERTY_NARGS] = {
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0x00,
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msb(property),
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lsb(property),
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};
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err = si476x_core_send_command(core, CMD_GET_PROPERTY,
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args, ARRAY_SIZE(args),
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resp, ARRAY_SIZE(resp),
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SI476X_DEFAULT_TIMEOUT);
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if (err < 0)
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return err;
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else
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return be16_to_cpup((__be16 *)(resp + 2));
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}
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EXPORT_SYMBOL_GPL(si476x_core_cmd_get_property);
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/**
|
|
* 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");
|