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nwzlinux: add support for radio
None of the Sony up to A15 seem to support RDS (they use either Si4702 or Si4708), thus I did not add any code to support RDS. Change-Id: I64838993b9705b36b94665f8470c7a89c772c961
This commit is contained in:
Amaury Pouly
parent
ee2eb13b74
commit
0fe7b8becf
10 changed files with 279 additions and 18 deletions
65
firmware/target/hosted/sonynwz/audio-nwz.c
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65
firmware/target/hosted/sonynwz/audio-nwz.c
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/***************************************************************************
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* __________ __ ___
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2017 Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "cpu.h"
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#include "audio.h"
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#include "audiohw.h"
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#include "sound.h"
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#include "nwzlinux_codec.h"
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int audio_channels = 2;
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int audio_output_source = AUDIO_SRC_PLAYBACK;
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void audio_set_output_source(int source)
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{
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if((unsigned)source >= AUDIO_NUM_SOURCES)
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source = AUDIO_SRC_PLAYBACK;
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audio_output_source = source;
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}
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void audio_input_mux(int source, unsigned flags)
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{
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static int last_source = AUDIO_SRC_PLAYBACK;
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(void)flags;
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switch (source)
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{
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default: /* playback - no recording */
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source = AUDIO_SRC_PLAYBACK;
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case AUDIO_SRC_PLAYBACK:
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audio_channels = 2;
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if (source != last_source)
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audiohw_set_playback_src(NWZ_PLAYBACK);
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break;
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case AUDIO_SRC_FMRADIO: /* recording and playback */
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audio_channels = 2;
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if (source == last_source)
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break;
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audiohw_set_playback_src(NWZ_RADIO);
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break;
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} /* end switch */
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last_source = source;
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} /* audio_input_mux */
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61
firmware/target/hosted/sonynwz/nwz_tuner.h
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61
firmware/target/hosted/sonynwz/nwz_tuner.h
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2017 Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __NWZ_TUNER_H__
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#define __NWZ_TUNER_H__
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#define NWZ_TUNER_DEV "/dev/radio0"
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/* we only describe the private ioctl, the rest is standard v4l2 */
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#define NWZ_TUNER_TYPE 'v'
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#define NWZ_TUNER_REG_COUNT 20
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/* there is something slightly fishy about this structure, the ioctl code says it must be of size
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* 0x2C but the disassembled code looks like it uses a size of 0x24, probably Sony's code is
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* massively broken */
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struct nwz_tuner_ioctl_t
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{
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union
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{
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uint32_t regno; // for GET_REG
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uint32_t rssi; // for GET_RSSI
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uint32_t freq; // for SET_FREQ
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struct
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{
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uint8_t regno;
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uint8_t reserved;
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uint16_t val;
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}put; // for PUT_REG
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};
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uint16_t regs[NWZ_TUNER_REG_COUNT];
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} __attribute__((packed));
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/* these requests seem to be the only one supported by all generations */
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#define NWZ_TUNER_INIT_REG _IOWR(NWZ_TUNER_TYPE, 41, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_PUT_REG _IOWR(NWZ_TUNER_TYPE, 42, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_GET_REG _IOWR(NWZ_TUNER_TYPE, 43, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_GET_REG_ALL _IOWR(NWZ_TUNER_TYPE, 44, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_SET_FREQ _IOWR(NWZ_TUNER_TYPE, 45, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_RESET _IOW(NWZ_TUNER_TYPE, 46, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_GPIO2_ON _IOW(NWZ_TUNER_TYPE, 47, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_GPIO2_OFF _IOW(NWZ_TUNER_TYPE, 48, struct nwz_tuner_ioctl_t)
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#define NWZ_TUNER_GET_RSSI _IOWR(NWZ_TUNER_TYPE, 49, struct nwz_tuner_ioctl_t)
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#endif /* __NWZ_TUNER_H__ */
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110
firmware/target/hosted/sonynwz/radio-nwz.c
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110
firmware/target/hosted/sonynwz/radio-nwz.c
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@ -0,0 +1,110 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2017 Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include "stdint.h"
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#include "stdio.h"
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#include "string.h"
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#include "kernel.h"
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#include "rbendian.h"
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#include "nwz_tuner.h"
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#include "si4700.h"
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#include "power.h"
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static int radio_fd = -1;
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bool tuner_power(bool status)
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{
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if(status != tuner_powered())
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{
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if(status)
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{
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radio_fd = open(NWZ_TUNER_DEV, 0);
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if(radio_fd != -1)
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{
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/* Sony is braindead, opening the radio device mutes all audio (even from the DAC)
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* until SET_FREQ is called with a valid frequency, choose 90MHz because it is valid
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* in all bands */
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struct nwz_tuner_ioctl_t req;
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memset(&req, 0, sizeof(req)); // just to avoid garbage in
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req.freq = 90000;
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int ret = ioctl(radio_fd, NWZ_TUNER_SET_FREQ, &req);
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if(ret != 0)
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perror("tuner set_freq error");
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}
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else
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perror("tuner open error");
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}
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else
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{
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close(radio_fd);
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radio_fd = -1;
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}
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}
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return tuner_powered();
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}
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bool tuner_powered(void)
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{
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return radio_fd != -1;
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}
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/* one can adjust the following depending on the tuner, for now it is calibrated for the si470x
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* which is crazy, because it starts reading at register 0xA and writing at 0x2. We need to
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* "emulate" this behavior... Note that Si470x transmits in big-endian */
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#define READ_START_REG 0xA
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#define WRITE_START_REG 0x2
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#define REG_COUNT 16
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#define REG_SIZE 2
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#define REG_TYPE uint16_t
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#define REG_SWAP swap16
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int fmradio_i2c_write(unsigned char address, unsigned char* buf, int count)
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{
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(void)address;
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struct nwz_tuner_ioctl_t req;
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memset(&req, 0, sizeof(req)); // just to avoid garbage in
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for(int i = 0; i < count / REG_SIZE; i++)
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{
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req.put.regno = (WRITE_START_REG + i) % REG_COUNT;
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req.put.val = REG_SWAP(*(REG_TYPE *)&buf[i * REG_SIZE]);
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int ret = ioctl(radio_fd, NWZ_TUNER_PUT_REG, &req);
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if(ret != 0)
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return ret;
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}
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return 0;
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}
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int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
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{
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(void)address;
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struct nwz_tuner_ioctl_t req;
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memset(&req, 0, sizeof(req)); // just to avoid garbage in
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int ret = ioctl(radio_fd, NWZ_TUNER_GET_REG_ALL, &req);
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if(ret != 0)
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return ret;
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for(int i = 0; i < count / REG_SIZE; i++)
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*(REG_TYPE *)&buf[i * REG_SIZE] = REG_SWAP(req.regs[(READ_START_REG + i) % REG_COUNT]);
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return 0;
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}
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