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/*
* intelmid_pvt.h - Intel Sound card driver for MID
*
* Copyright (C) 2008-10 Intel Corp
* Authors: Harsha Priya <priya.harsha@intel.com>
* Vinod Koul <vinod.koul@intel.com>
* KP Jeeja <jeeja.kp@intel.com>
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ALSA driver for Intel MID sound card chipset - holding private functions
*/
#include <linux/io.h>
#include <asm/intel_scu_ipc.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include "jack.h"
#include "intel_sst.h"
#include "intel_sst_ioctl.h"
#include "intelmid_snd_control.h"
#include "intelmid.h"
void period_elapsed(void *mad_substream)
{
struct snd_pcm_substream *substream = mad_substream;
struct mad_stream_pvt *stream;
if (!substream || !substream->runtime)
return;
stream = substream->runtime->private_data;
if (!stream)
return;
if (stream->stream_status != RUNNING)
return;
pr_debug("sst: calling period elapsed\n");
snd_pcm_period_elapsed(substream);
return;
}
int snd_intelmad_alloc_stream(struct snd_pcm_substream *substream)
{
struct snd_intelmad *intelmaddata = snd_pcm_substream_chip(substream);
struct mad_stream_pvt *stream = substream->runtime->private_data;
struct snd_sst_stream_params param = {{{0,},},};
struct snd_sst_params str_params = {0};
int ret_val;
/* set codec params and inform SST driver the same */
param.uc.pcm_params.codec = SST_CODEC_TYPE_PCM;
param.uc.pcm_params.num_chan = (u8) substream->runtime->channels;
param.uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
param.uc.pcm_params.reserved = 0;
param.uc.pcm_params.sfreq = substream->runtime->rate;
param.uc.pcm_params.ring_buffer_size =
snd_pcm_lib_buffer_bytes(substream);
param.uc.pcm_params.period_count = substream->runtime->period_size;
param.uc.pcm_params.ring_buffer_addr =
virt_to_phys(substream->runtime->dma_area);
pr_debug("sst: period_cnt = %d\n", param.uc.pcm_params.period_count);
pr_debug("sst: sfreq= %d, wd_sz = %d\n",
param.uc.pcm_params.sfreq, param.uc.pcm_params.pcm_wd_sz);
str_params.sparams = param;
str_params.codec = SST_CODEC_TYPE_PCM;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
str_params.ops = STREAM_OPS_PLAYBACK;
pr_debug("sst: Playbck stream,Device %d\n", stream->device);
} else {
str_params.ops = STREAM_OPS_CAPTURE;
stream->device = SND_SST_DEVICE_CAPTURE;
pr_debug("sst: Capture stream,Device %d\n", stream->device);
}
str_params.device_type = stream->device;
ret_val = intelmaddata->sstdrv_ops->control_set(SST_SND_ALLOC,
&str_params);
pr_debug("sst: SST_SND_PLAY/CAPTURE ret_val = %x\n",
ret_val);
if (ret_val < 0)
return ret_val;
stream->stream_info.str_id = ret_val;
stream->stream_status = INIT;
stream->stream_info.buffer_ptr = 0;
pr_debug("sst: str id : %d\n", stream->stream_info.str_id);
return ret_val;
}
int snd_intelmad_init_stream(struct snd_pcm_substream *substream)
{
struct mad_stream_pvt *stream = substream->runtime->private_data;
struct snd_intelmad *intelmaddata = snd_pcm_substream_chip(substream);
int ret_val;
pr_debug("sst: setting buffer ptr param\n");
stream->stream_info.period_elapsed = period_elapsed;
stream->stream_info.mad_substream = substream;
stream->stream_info.buffer_ptr = 0;
stream->stream_info.sfreq = substream->runtime->rate;
ret_val = intelmaddata->sstdrv_ops->control_set(SST_SND_STREAM_INIT,
&stream->stream_info);
if (ret_val)
pr_err("sst: control_set ret error %d\n", ret_val);
return ret_val;
}
/**
* sst_sc_reg_access - IPC read/write wrapper
*
* @sc_access: array of data, addresses and mask
* @type: operation type
* @num_val: number of reg to opertae on
*
* Reads/writes/read-modify operations on registers accessed through SCU (sound
* card and few SST DSP regsisters that are not accissible to IA)
*/
int sst_sc_reg_access(struct sc_reg_access *sc_access,
int type, int num_val)
{
int i, retval = 0;
if (type == PMIC_WRITE) {
for (i = 0; i < num_val; i++) {
retval = intel_scu_ipc_iowrite8(sc_access[i].reg_addr,
sc_access[i].value);
if (retval) {
pr_err("sst: IPC write failed!!! %d\n", retval);
return retval;
}
}
} else if (type == PMIC_READ) {
for (i = 0; i < num_val; i++) {
retval = intel_scu_ipc_ioread8(sc_access[i].reg_addr,
&(sc_access[i].value));
if (retval) {
pr_err("sst: IPC read failed!!!!!%d\n", retval);
return retval;
}
}
} else {
for (i = 0; i < num_val; i++) {
retval = intel_scu_ipc_update_register(
sc_access[i].reg_addr, sc_access[i].value,
sc_access[i].mask);
if (retval) {
pr_err("sst: IPC Modify failed!!!%d\n", retval);
return retval;
}
}
}
return retval;
}
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