848 lines
20 KiB
C
848 lines
20 KiB
C
/* arch/arm/mach-msm/qdsp5/audio_out.c
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*
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* pcm audio output device
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*
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* Copyright (C) 2008 Google, Inc.
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* Copyright (C) 2008 HTC Corporation
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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/fs.h>
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#include <linux/miscdevice.h>
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#include <linux/uaccess.h>
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#include <linux/kthread.h>
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#include <linux/wait.h>
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#include <linux/dma-mapping.h>
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#include <linux/debugfs.h>
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#include <linux/delay.h>
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#include <linux/wakelock.h>
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#include <linux/msm_audio.h>
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#include <asm/atomic.h>
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#include <asm/ioctls.h>
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#include <mach/msm_adsp.h>
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#include "audmgr.h"
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#include <mach/qdsp5/qdsp5audppcmdi.h>
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#include <mach/qdsp5/qdsp5audppmsg.h>
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#include "evlog.h"
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#define LOG_AUDIO_EVENTS 1
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#define LOG_AUDIO_FAULTS 0
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enum {
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EV_NULL,
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EV_OPEN,
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EV_WRITE,
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EV_RETURN,
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EV_IOCTL,
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EV_WRITE_WAIT,
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EV_WAIT_EVENT,
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EV_FILL_BUFFER,
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EV_SEND_BUFFER,
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EV_DSP_EVENT,
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EV_ENABLE,
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};
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#if (LOG_AUDIO_EVENTS != 1)
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static inline void LOG(unsigned id, unsigned arg) {}
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#else
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static const char *pcm_log_strings[] = {
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"NULL",
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"OPEN",
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"WRITE",
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"RETURN",
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"IOCTL",
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"WRITE_WAIT",
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"WAIT_EVENT",
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"FILL_BUFFER",
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"SEND_BUFFER",
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"DSP_EVENT",
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"ENABLE",
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};
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DECLARE_LOG(pcm_log, 64, pcm_log_strings);
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static int __init _pcm_log_init(void)
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{
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return ev_log_init(&pcm_log);
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}
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module_init(_pcm_log_init);
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#define LOG(id,arg) ev_log_write(&pcm_log, id, arg)
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#endif
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#define BUFSZ (960 * 5)
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#define DMASZ (BUFSZ * 2)
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#define AUDPP_CMD_CFG_OBJ_UPDATE 0x8000
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#define AUDPP_CMD_EQ_FLAG_DIS 0x0000
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#define AUDPP_CMD_EQ_FLAG_ENA -1
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#define AUDPP_CMD_IIR_FLAG_DIS 0x0000
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#define AUDPP_CMD_IIR_FLAG_ENA -1
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#define AUDPP_CMD_IIR_TUNING_FILTER 1
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#define AUDPP_CMD_EQUALIZER 2
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#define AUDPP_CMD_ADRC 3
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#define ADRC_ENABLE 0x0001
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#define EQ_ENABLE 0x0002
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#define IIR_ENABLE 0x0004
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struct adrc_filter {
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uint16_t compression_th;
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uint16_t compression_slope;
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uint16_t rms_time;
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uint16_t attack_const_lsw;
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uint16_t attack_const_msw;
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uint16_t release_const_lsw;
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uint16_t release_const_msw;
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uint16_t adrc_system_delay;
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};
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struct eqalizer {
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uint16_t num_bands;
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uint16_t eq_params[132];
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};
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struct rx_iir_filter {
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uint16_t num_bands;
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uint16_t iir_params[48];
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};
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typedef struct {
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audpp_cmd_cfg_object_params_common common;
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uint16_t eq_flag;
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uint16_t num_bands;
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uint16_t eq_params[132];
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} audpp_cmd_cfg_object_params_eq;
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typedef struct {
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audpp_cmd_cfg_object_params_common common;
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uint16_t active_flag;
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uint16_t num_bands;
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uint16_t iir_params[48];
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} audpp_cmd_cfg_object_params_rx_iir;
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struct buffer {
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void *data;
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unsigned size;
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unsigned used;
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unsigned addr;
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};
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struct audio {
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struct buffer out[2];
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spinlock_t dsp_lock;
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uint8_t out_head;
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uint8_t out_tail;
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uint8_t out_needed; /* number of buffers the dsp is waiting for */
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atomic_t out_bytes;
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struct mutex lock;
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struct mutex write_lock;
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wait_queue_head_t wait;
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/* configuration to use on next enable */
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uint32_t out_sample_rate;
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uint32_t out_channel_mode;
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uint32_t out_weight;
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uint32_t out_buffer_size;
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struct audmgr audmgr;
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/* data allocated for various buffers */
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char *data;
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dma_addr_t phys;
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int opened;
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int enabled;
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int running;
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int stopped; /* set when stopped, cleared on flush */
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unsigned volume;
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struct wake_lock wakelock;
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struct wake_lock idlelock;
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int adrc_enable;
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struct adrc_filter adrc;
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int eq_enable;
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struct eqalizer eq;
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int rx_iir_enable;
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struct rx_iir_filter iir;
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};
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static void audio_prevent_sleep(struct audio *audio)
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{
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printk(KERN_INFO "++++++++++++++++++++++++++++++\n");
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wake_lock(&audio->wakelock);
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wake_lock(&audio->idlelock);
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}
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static void audio_allow_sleep(struct audio *audio)
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{
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wake_unlock(&audio->wakelock);
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wake_unlock(&audio->idlelock);
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printk(KERN_INFO "------------------------------\n");
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}
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static int audio_dsp_out_enable(struct audio *audio, int yes);
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static int audio_dsp_send_buffer(struct audio *audio, unsigned id, unsigned len);
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static int audio_dsp_set_adrc(struct audio *audio);
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static int audio_dsp_set_eq(struct audio *audio);
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static int audio_dsp_set_rx_iir(struct audio *audio);
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static void audio_dsp_event(void *private, unsigned id, uint16_t *msg);
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/* must be called with audio->lock held */
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static int audio_enable(struct audio *audio)
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{
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struct audmgr_config cfg;
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int rc;
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pr_info("audio_enable()\n");
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if (audio->enabled)
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return 0;
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/* refuse to start if we're not ready */
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if (!audio->out[0].used || !audio->out[1].used)
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return -EIO;
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/* we start buffers 0 and 1, so buffer 0 will be the
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* next one the dsp will want
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*/
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audio->out_tail = 0;
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audio->out_needed = 0;
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cfg.tx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE;
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cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_48000;
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cfg.def_method = RPC_AUD_DEF_METHOD_HOST_PCM;
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cfg.codec = RPC_AUD_DEF_CODEC_PCM;
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cfg.snd_method = RPC_SND_METHOD_MIDI;
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audio_prevent_sleep(audio);
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rc = audmgr_enable(&audio->audmgr, &cfg);
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if (rc < 0) {
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audio_allow_sleep(audio);
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return rc;
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}
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if (audpp_enable(-1, audio_dsp_event, audio)) {
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pr_err("audio: audpp_enable() failed\n");
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audmgr_disable(&audio->audmgr);
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audio_allow_sleep(audio);
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return -ENODEV;
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}
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audio->enabled = 1;
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return 0;
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}
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/* must be called with audio->lock held */
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static int audio_disable(struct audio *audio)
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{
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pr_info("audio_disable()\n");
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if (audio->enabled) {
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audio->enabled = 0;
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audio_dsp_out_enable(audio, 0);
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audpp_disable(-1, audio);
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wake_up(&audio->wait);
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audmgr_disable(&audio->audmgr);
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audio->out_needed = 0;
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audio_allow_sleep(audio);
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}
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return 0;
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}
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/* ------------------- dsp --------------------- */
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static void audio_dsp_event(void *private, unsigned id, uint16_t *msg)
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{
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struct audio *audio = private;
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struct buffer *frame;
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unsigned long flags;
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LOG(EV_DSP_EVENT, id);
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switch (id) {
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case AUDPP_MSG_HOST_PCM_INTF_MSG: {
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unsigned id = msg[2];
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unsigned idx = msg[3] - 1;
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/* pr_info("audio_dsp_event: HOST_PCM id %d idx %d\n", id, idx); */
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if (id != AUDPP_MSG_HOSTPCM_ID_ARM_RX) {
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pr_err("bogus id\n");
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break;
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}
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if (idx > 1) {
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pr_err("bogus buffer idx\n");
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break;
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}
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spin_lock_irqsave(&audio->dsp_lock, flags);
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if (audio->running) {
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atomic_add(audio->out[idx].used, &audio->out_bytes);
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audio->out[idx].used = 0;
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frame = audio->out + audio->out_tail;
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if (frame->used) {
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audio_dsp_send_buffer(
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audio, audio->out_tail, frame->used);
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audio->out_tail ^= 1;
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} else {
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audio->out_needed++;
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}
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wake_up(&audio->wait);
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}
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spin_unlock_irqrestore(&audio->dsp_lock, flags);
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break;
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}
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case AUDPP_MSG_PCMDMAMISSED:
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pr_info("audio_dsp_event: PCMDMAMISSED %d\n", msg[0]);
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break;
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case AUDPP_MSG_CFG_MSG:
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if (msg[0] == AUDPP_MSG_ENA_ENA) {
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LOG(EV_ENABLE, 1);
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pr_info("audio_dsp_event: CFG_MSG ENABLE\n");
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audio->out_needed = 0;
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audio->running = 1;
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audpp_set_volume_and_pan(5, audio->volume, 0);
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audio_dsp_set_adrc(audio);
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audio_dsp_set_eq(audio);
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audio_dsp_set_rx_iir(audio);
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audio_dsp_out_enable(audio, 1);
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} else if (msg[0] == AUDPP_MSG_ENA_DIS) {
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LOG(EV_ENABLE, 0);
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pr_info("audio_dsp_event: CFG_MSG DISABLE\n");
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audio->running = 0;
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} else {
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pr_err("audio_dsp_event: CFG_MSG %d?\n", msg[0]);
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}
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break;
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default:
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pr_err("audio_dsp_event: UNKNOWN (%d)\n", id);
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}
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}
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static int audio_dsp_out_enable(struct audio *audio, int yes)
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{
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audpp_cmd_pcm_intf cmd;
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memset(&cmd, 0, sizeof(cmd));
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cmd.cmd_id = AUDPP_CMD_PCM_INTF_2;
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cmd.object_num = AUDPP_CMD_PCM_INTF_OBJECT_NUM;
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cmd.config = AUDPP_CMD_PCM_INTF_CONFIG_CMD_V;
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cmd.intf_type = AUDPP_CMD_PCM_INTF_RX_ENA_ARMTODSP_V;
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if (yes) {
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cmd.write_buf1LSW = audio->out[0].addr;
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cmd.write_buf1MSW = audio->out[0].addr >> 16;
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cmd.write_buf1_len = audio->out[0].size;
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cmd.write_buf2LSW = audio->out[1].addr;
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cmd.write_buf2MSW = audio->out[1].addr >> 16;
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cmd.write_buf2_len = audio->out[1].size;
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cmd.arm_to_rx_flag = AUDPP_CMD_PCM_INTF_ENA_V;
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cmd.weight_decoder_to_rx = audio->out_weight;
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cmd.weight_arm_to_rx = 1;
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cmd.partition_number_arm_to_dsp = 0;
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cmd.sample_rate = audio->out_sample_rate;
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cmd.channel_mode = audio->out_channel_mode;
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}
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return audpp_send_queue2(&cmd, sizeof(cmd));
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}
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static int audio_dsp_send_buffer(struct audio *audio, unsigned idx, unsigned len)
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{
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audpp_cmd_pcm_intf_send_buffer cmd;
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cmd.cmd_id = AUDPP_CMD_PCM_INTF_2;
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cmd.host_pcm_object = AUDPP_CMD_PCM_INTF_OBJECT_NUM;
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cmd.config = AUDPP_CMD_PCM_INTF_BUFFER_CMD_V;
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cmd.intf_type = AUDPP_CMD_PCM_INTF_RX_ENA_ARMTODSP_V;
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cmd.dsp_to_arm_buf_id = 0;
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cmd.arm_to_dsp_buf_id = idx + 1;
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cmd.arm_to_dsp_buf_len = len;
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LOG(EV_SEND_BUFFER, idx);
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return audpp_send_queue2(&cmd, sizeof(cmd));
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}
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static int audio_dsp_set_adrc(struct audio *audio)
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{
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audpp_cmd_cfg_object_params_adrc cmd;
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memset(&cmd, 0, sizeof(cmd));
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cmd.common.comman_cfg = AUDPP_CMD_CFG_OBJ_UPDATE;
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cmd.common.command_type = AUDPP_CMD_ADRC;
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if (audio->adrc_enable) {
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cmd.adrc_flag = AUDPP_CMD_ADRC_FLAG_ENA;
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cmd.compression_th = audio->adrc.compression_th;
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cmd.compression_slope = audio->adrc.compression_slope;
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cmd.rms_time = audio->adrc.rms_time;
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cmd.attack_const_lsw = audio->adrc.attack_const_lsw;
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cmd.attack_const_msw = audio->adrc.attack_const_msw;
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cmd.release_const_lsw = audio->adrc.release_const_lsw;
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cmd.release_const_msw = audio->adrc.release_const_msw;
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cmd.adrc_system_delay = audio->adrc.adrc_system_delay;
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} else {
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cmd.adrc_flag = AUDPP_CMD_ADRC_FLAG_DIS;
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}
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return audpp_send_queue3(&cmd, sizeof(cmd));
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}
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static int audio_dsp_set_eq(struct audio *audio)
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{
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audpp_cmd_cfg_object_params_eq cmd;
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memset(&cmd, 0, sizeof(cmd));
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cmd.common.comman_cfg = AUDPP_CMD_CFG_OBJ_UPDATE;
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cmd.common.command_type = AUDPP_CMD_EQUALIZER;
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if (audio->eq_enable) {
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cmd.eq_flag = AUDPP_CMD_EQ_FLAG_ENA;
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cmd.num_bands = audio->eq.num_bands;
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memcpy(&cmd.eq_params, audio->eq.eq_params,
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sizeof(audio->eq.eq_params));
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} else {
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cmd.eq_flag = AUDPP_CMD_EQ_FLAG_DIS;
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}
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return audpp_send_queue3(&cmd, sizeof(cmd));
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}
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static int audio_dsp_set_rx_iir(struct audio *audio)
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{
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audpp_cmd_cfg_object_params_rx_iir cmd;
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memset(&cmd, 0, sizeof(cmd));
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cmd.common.comman_cfg = AUDPP_CMD_CFG_OBJ_UPDATE;
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cmd.common.command_type = AUDPP_CMD_IIR_TUNING_FILTER;
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if (audio->rx_iir_enable) {
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cmd.active_flag = AUDPP_CMD_IIR_FLAG_ENA;
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cmd.num_bands = audio->iir.num_bands;
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memcpy(&cmd.iir_params, audio->iir.iir_params,
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sizeof(audio->iir.iir_params));
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} else {
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cmd.active_flag = AUDPP_CMD_IIR_FLAG_DIS;
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}
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return audpp_send_queue3(&cmd, sizeof(cmd));
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}
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/* ------------------- device --------------------- */
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static int audio_enable_adrc(struct audio *audio, int enable)
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{
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if (audio->adrc_enable != enable) {
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audio->adrc_enable = enable;
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if (audio->running)
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audio_dsp_set_adrc(audio);
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}
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return 0;
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}
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static int audio_enable_eq(struct audio *audio, int enable)
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{
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if (audio->eq_enable != enable) {
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audio->eq_enable = enable;
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if (audio->running)
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audio_dsp_set_eq(audio);
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}
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return 0;
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}
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static int audio_enable_rx_iir(struct audio *audio, int enable)
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{
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if (audio->rx_iir_enable != enable) {
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audio->rx_iir_enable = enable;
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if (audio->running)
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audio_dsp_set_rx_iir(audio);
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}
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return 0;
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}
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static void audio_flush(struct audio *audio)
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{
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audio->out[0].used = 0;
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audio->out[1].used = 0;
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audio->out_head = 0;
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audio->out_tail = 0;
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audio->stopped = 0;
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}
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|
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static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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struct audio *audio = file->private_data;
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int rc;
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if (cmd == AUDIO_GET_STATS) {
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struct msm_audio_stats stats;
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stats.byte_count = atomic_read(&audio->out_bytes);
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if (copy_to_user((void*) arg, &stats, sizeof(stats)))
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return -EFAULT;
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return 0;
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}
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if (cmd == AUDIO_SET_VOLUME) {
|
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unsigned long flags;
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spin_lock_irqsave(&audio->dsp_lock, flags);
|
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audio->volume = arg;
|
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if (audio->running)
|
|
audpp_set_volume_and_pan(6, arg, 0);
|
|
spin_unlock_irqrestore(&audio->dsp_lock, flags);
|
|
}
|
|
|
|
LOG(EV_IOCTL, cmd);
|
|
mutex_lock(&audio->lock);
|
|
switch (cmd) {
|
|
case AUDIO_START:
|
|
rc = audio_enable(audio);
|
|
break;
|
|
case AUDIO_STOP:
|
|
rc = audio_disable(audio);
|
|
audio->stopped = 1;
|
|
break;
|
|
case AUDIO_FLUSH:
|
|
if (audio->stopped) {
|
|
/* Make sure we're stopped and we wake any threads
|
|
* that might be blocked holding the write_lock.
|
|
* While audio->stopped write threads will always
|
|
* exit immediately.
|
|
*/
|
|
wake_up(&audio->wait);
|
|
mutex_lock(&audio->write_lock);
|
|
audio_flush(audio);
|
|
mutex_unlock(&audio->write_lock);
|
|
}
|
|
case AUDIO_SET_CONFIG: {
|
|
struct msm_audio_config config;
|
|
if (copy_from_user(&config, (void*) arg, sizeof(config))) {
|
|
rc = -EFAULT;
|
|
break;
|
|
}
|
|
if (config.channel_count == 1) {
|
|
config.channel_count = AUDPP_CMD_PCM_INTF_MONO_V;
|
|
} else if (config.channel_count == 2) {
|
|
config.channel_count= AUDPP_CMD_PCM_INTF_STEREO_V;
|
|
} else {
|
|
rc = -EINVAL;
|
|
break;
|
|
}
|
|
audio->out_sample_rate = config.sample_rate;
|
|
audio->out_channel_mode = config.channel_count;
|
|
rc = 0;
|
|
break;
|
|
}
|
|
case AUDIO_GET_CONFIG: {
|
|
struct msm_audio_config config;
|
|
config.buffer_size = BUFSZ;
|
|
config.buffer_count = 2;
|
|
config.sample_rate = audio->out_sample_rate;
|
|
if (audio->out_channel_mode == AUDPP_CMD_PCM_INTF_MONO_V) {
|
|
config.channel_count = 1;
|
|
} else {
|
|
config.channel_count = 2;
|
|
}
|
|
config.unused[0] = 0;
|
|
config.unused[1] = 0;
|
|
config.unused[2] = 0;
|
|
config.unused[3] = 0;
|
|
if (copy_to_user((void*) arg, &config, sizeof(config))) {
|
|
rc = -EFAULT;
|
|
} else {
|
|
rc = 0;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
rc = -EINVAL;
|
|
}
|
|
mutex_unlock(&audio->lock);
|
|
return rc;
|
|
}
|
|
|
|
static ssize_t audio_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int rt_policy(int policy)
|
|
{
|
|
if (unlikely(policy == SCHED_FIFO) || unlikely(policy == SCHED_RR))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static inline int task_has_rt_policy(struct task_struct *p)
|
|
{
|
|
return rt_policy(p->policy);
|
|
}
|
|
|
|
static ssize_t audio_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *pos)
|
|
{
|
|
struct sched_param s = { .sched_priority = 1 };
|
|
struct audio *audio = file->private_data;
|
|
unsigned long flags;
|
|
const char __user *start = buf;
|
|
struct buffer *frame;
|
|
size_t xfer;
|
|
int old_prio = current->rt_priority;
|
|
int old_policy = current->policy;
|
|
int cap_nice = cap_raised(current_cap(), CAP_SYS_NICE);
|
|
int rc = 0;
|
|
|
|
LOG(EV_WRITE, count | (audio->running << 28) | (audio->stopped << 24));
|
|
|
|
/* just for this write, set us real-time */
|
|
if (!task_has_rt_policy(current)) {
|
|
struct cred *new = prepare_creds();
|
|
cap_raise(new->cap_effective, CAP_SYS_NICE);
|
|
commit_creds(new);
|
|
sched_setscheduler(current, SCHED_RR, &s);
|
|
}
|
|
|
|
mutex_lock(&audio->write_lock);
|
|
while (count > 0) {
|
|
frame = audio->out + audio->out_head;
|
|
|
|
LOG(EV_WAIT_EVENT, 0);
|
|
rc = wait_event_interruptible(audio->wait,
|
|
(frame->used == 0) || (audio->stopped));
|
|
LOG(EV_WAIT_EVENT, 1);
|
|
|
|
if (rc < 0)
|
|
break;
|
|
if (audio->stopped) {
|
|
rc = -EBUSY;
|
|
break;
|
|
}
|
|
xfer = count > frame->size ? frame->size : count;
|
|
if (copy_from_user(frame->data, buf, xfer)) {
|
|
rc = -EFAULT;
|
|
break;
|
|
}
|
|
frame->used = xfer;
|
|
audio->out_head ^= 1;
|
|
count -= xfer;
|
|
buf += xfer;
|
|
|
|
spin_lock_irqsave(&audio->dsp_lock, flags);
|
|
LOG(EV_FILL_BUFFER, audio->out_head ^ 1);
|
|
frame = audio->out + audio->out_tail;
|
|
if (frame->used && audio->out_needed) {
|
|
audio_dsp_send_buffer(audio, audio->out_tail, frame->used);
|
|
audio->out_tail ^= 1;
|
|
audio->out_needed--;
|
|
}
|
|
spin_unlock_irqrestore(&audio->dsp_lock, flags);
|
|
}
|
|
|
|
mutex_unlock(&audio->write_lock);
|
|
|
|
/* restore scheduling policy and priority */
|
|
if (!rt_policy(old_policy)) {
|
|
struct sched_param v = { .sched_priority = old_prio };
|
|
sched_setscheduler(current, old_policy, &v);
|
|
if (likely(!cap_nice)) {
|
|
struct cred *new = prepare_creds();
|
|
cap_lower(new->cap_effective, CAP_SYS_NICE);
|
|
commit_creds(new);
|
|
sched_setscheduler(current, SCHED_RR, &s);
|
|
}
|
|
}
|
|
|
|
LOG(EV_RETURN,(buf > start) ? (buf - start) : rc);
|
|
if (buf > start)
|
|
return buf - start;
|
|
return rc;
|
|
}
|
|
|
|
static int audio_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct audio *audio = file->private_data;
|
|
|
|
LOG(EV_OPEN, 0);
|
|
mutex_lock(&audio->lock);
|
|
audio_disable(audio);
|
|
audio_flush(audio);
|
|
audio->opened = 0;
|
|
mutex_unlock(&audio->lock);
|
|
return 0;
|
|
}
|
|
|
|
static struct audio the_audio;
|
|
|
|
static int audio_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct audio *audio = &the_audio;
|
|
int rc;
|
|
|
|
mutex_lock(&audio->lock);
|
|
|
|
if (audio->opened) {
|
|
pr_err("audio: busy\n");
|
|
rc = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
if (!audio->data) {
|
|
audio->data = dma_alloc_coherent(NULL, DMASZ,
|
|
&audio->phys, GFP_KERNEL);
|
|
if (!audio->data) {
|
|
pr_err("audio: could not allocate DMA buffers\n");
|
|
rc = -ENOMEM;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
rc = audmgr_open(&audio->audmgr);
|
|
if (rc)
|
|
goto done;
|
|
|
|
audio->out_buffer_size = BUFSZ;
|
|
audio->out_sample_rate = 44100;
|
|
audio->out_channel_mode = AUDPP_CMD_PCM_INTF_STEREO_V;
|
|
audio->out_weight = 100;
|
|
|
|
audio->out[0].data = audio->data + 0;
|
|
audio->out[0].addr = audio->phys + 0;
|
|
audio->out[0].size = BUFSZ;
|
|
|
|
audio->out[1].data = audio->data + BUFSZ;
|
|
audio->out[1].addr = audio->phys + BUFSZ;
|
|
audio->out[1].size = BUFSZ;
|
|
|
|
audio->volume = 0x2000;
|
|
|
|
audio_flush(audio);
|
|
|
|
file->private_data = audio;
|
|
audio->opened = 1;
|
|
rc = 0;
|
|
LOG(EV_OPEN, 1);
|
|
done:
|
|
mutex_unlock(&audio->lock);
|
|
return rc;
|
|
}
|
|
|
|
static long audpp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct audio *audio = file->private_data;
|
|
int rc = 0, enable;
|
|
uint16_t enable_mask;
|
|
|
|
mutex_lock(&audio->lock);
|
|
switch (cmd) {
|
|
case AUDIO_ENABLE_AUDPP:
|
|
if (copy_from_user(&enable_mask, (void *) arg, sizeof(enable_mask)))
|
|
goto out_fault;
|
|
|
|
enable = (enable_mask & ADRC_ENABLE)? 1 : 0;
|
|
audio_enable_adrc(audio, enable);
|
|
enable = (enable_mask & EQ_ENABLE)? 1 : 0;
|
|
audio_enable_eq(audio, enable);
|
|
enable = (enable_mask & IIR_ENABLE)? 1 : 0;
|
|
audio_enable_rx_iir(audio, enable);
|
|
break;
|
|
|
|
case AUDIO_SET_ADRC:
|
|
if (copy_from_user(&audio->adrc, (void*) arg, sizeof(audio->adrc)))
|
|
goto out_fault;
|
|
break;
|
|
|
|
case AUDIO_SET_EQ:
|
|
if (copy_from_user(&audio->eq, (void*) arg, sizeof(audio->eq)))
|
|
goto out_fault;
|
|
break;
|
|
|
|
case AUDIO_SET_RX_IIR:
|
|
if (copy_from_user(&audio->iir, (void*) arg, sizeof(audio->iir)))
|
|
goto out_fault;
|
|
break;
|
|
|
|
default:
|
|
rc = -EINVAL;
|
|
}
|
|
|
|
goto out;
|
|
|
|
out_fault:
|
|
rc = -EFAULT;
|
|
out:
|
|
mutex_unlock(&audio->lock);
|
|
return rc;
|
|
}
|
|
|
|
static int audpp_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct audio *audio = &the_audio;
|
|
|
|
file->private_data = audio;
|
|
return 0;
|
|
}
|
|
|
|
static struct file_operations audio_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = audio_open,
|
|
.release = audio_release,
|
|
.read = audio_read,
|
|
.write = audio_write,
|
|
.unlocked_ioctl = audio_ioctl,
|
|
};
|
|
|
|
static struct file_operations audpp_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = audpp_open,
|
|
.unlocked_ioctl = audpp_ioctl,
|
|
};
|
|
|
|
struct miscdevice audio_misc = {
|
|
.minor = MISC_DYNAMIC_MINOR,
|
|
.name = "msm_pcm_out",
|
|
.fops = &audio_fops,
|
|
};
|
|
|
|
struct miscdevice audpp_misc = {
|
|
.minor = MISC_DYNAMIC_MINOR,
|
|
.name = "msm_pcm_ctl",
|
|
.fops = &audpp_fops,
|
|
};
|
|
|
|
static int __init audio_init(void)
|
|
{
|
|
mutex_init(&the_audio.lock);
|
|
mutex_init(&the_audio.write_lock);
|
|
spin_lock_init(&the_audio.dsp_lock);
|
|
init_waitqueue_head(&the_audio.wait);
|
|
wake_lock_init(&the_audio.wakelock, WAKE_LOCK_SUSPEND, "audio_pcm");
|
|
wake_lock_init(&the_audio.idlelock, WAKE_LOCK_IDLE, "audio_pcm_idle");
|
|
return (misc_register(&audio_misc) || misc_register(&audpp_misc));
|
|
}
|
|
|
|
device_initcall(audio_init);
|