2 * intelmid_pvt.h - Intel Sound card driver for MID
4 * Copyright (C) 2008-10 Intel Corp
5 * Authors: Harsha Priya <priya.harsha@intel.com>
6 * Vinod Koul <vinod.koul@intel.com>
7 * KP Jeeja <jeeja.kp@intel.com>
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2 of the License.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 * ALSA driver for Intel MID sound card chipset - holding private functions
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30 #include <asm/intel_scu_ipc.h>
31 #include <sound/core.h>
32 #include <sound/control.h>
33 #include <sound/pcm.h>
34 #include "intel_sst.h"
35 #include "intel_sst_ioctl.h"
36 #include "intelmid_snd_control.h"
40 void period_elapsed(void *mad_substream)
42 struct snd_pcm_substream *substream = mad_substream;
43 struct mad_stream_pvt *stream;
47 if (!substream || !substream->runtime)
49 stream = substream->runtime->private_data;
53 if (stream->stream_status != RUNNING)
55 pr_debug("calling period elapsed\n");
56 snd_pcm_period_elapsed(substream);
61 int snd_intelmad_alloc_stream(struct snd_pcm_substream *substream)
63 struct snd_intelmad *intelmaddata = snd_pcm_substream_chip(substream);
64 struct mad_stream_pvt *stream = substream->runtime->private_data;
65 struct snd_sst_stream_params param = {{{0,},},};
66 struct snd_sst_params str_params = {0};
69 /* set codec params and inform SST driver the same */
71 param.uc.pcm_params.codec = SST_CODEC_TYPE_PCM;
72 param.uc.pcm_params.num_chan = (u8) substream->runtime->channels;
73 param.uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
74 param.uc.pcm_params.reserved = 0;
75 param.uc.pcm_params.sfreq = substream->runtime->rate;
76 param.uc.pcm_params.ring_buffer_size =
77 snd_pcm_lib_buffer_bytes(substream);
78 param.uc.pcm_params.period_count = substream->runtime->period_size;
79 param.uc.pcm_params.ring_buffer_addr =
80 virt_to_phys(substream->runtime->dma_area);
81 pr_debug("period_cnt = %d\n", param.uc.pcm_params.period_count);
82 pr_debug("sfreq= %d, wd_sz = %d\n",
83 param.uc.pcm_params.sfreq, param.uc.pcm_params.pcm_wd_sz);
85 str_params.sparams = param;
86 str_params.codec = SST_CODEC_TYPE_PCM;
88 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
89 str_params.ops = STREAM_OPS_PLAYBACK;
90 pr_debug("Playbck stream,Device %d\n", stream->device);
92 str_params.ops = STREAM_OPS_CAPTURE;
93 stream->device = SND_SST_DEVICE_CAPTURE;
94 pr_debug("Capture stream,Device %d\n", stream->device);
96 str_params.device_type = stream->device;
97 ret_val = intelmaddata->sstdrv_ops->pcm_control->open(&str_params);
98 pr_debug("sst: SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val);
102 stream->stream_info.str_id = ret_val;
103 stream->stream_status = INIT;
104 stream->stream_info.buffer_ptr = 0;
105 pr_debug("str id : %d\n", stream->stream_info.str_id);
110 int snd_intelmad_init_stream(struct snd_pcm_substream *substream)
112 struct mad_stream_pvt *stream = substream->runtime->private_data;
113 struct snd_intelmad *intelmaddata = snd_pcm_substream_chip(substream);
116 pr_debug("setting buffer ptr param\n");
117 stream->stream_info.period_elapsed = period_elapsed;
118 stream->stream_info.mad_substream = substream;
119 stream->stream_info.buffer_ptr = 0;
120 stream->stream_info.sfreq = substream->runtime->rate;
121 ret_val = intelmaddata->sstdrv_ops->pcm_control->device_control(
122 SST_SND_STREAM_INIT, &stream->stream_info);
124 pr_err("control_set ret error %d\n", ret_val);
131 * sst_sc_reg_access - IPC read/write wrapper
133 * @sc_access: array of data, addresses and mask
134 * @type: operation type
135 * @num_val: number of reg to opertae on
137 * Reads/writes/read-modify operations on registers accessed through SCU (sound
138 * card and few SST DSP regsisters that are not accissible to IA)
140 int sst_sc_reg_access(struct sc_reg_access *sc_access,
141 int type, int num_val)
144 if (type == PMIC_WRITE) {
145 for (i = 0; i < num_val; i++) {
146 retval = intel_scu_ipc_iowrite8(sc_access[i].reg_addr,
151 } else if (type == PMIC_READ) {
152 for (i = 0; i < num_val; i++) {
153 retval = intel_scu_ipc_ioread8(sc_access[i].reg_addr,
154 &(sc_access[i].value));
159 for (i = 0; i < num_val; i++) {
160 retval = intel_scu_ipc_update_register(
161 sc_access[i].reg_addr, sc_access[i].value,
169 pr_err("IPC failed for cmd %d, %d\n", retval, type);
170 pr_err("reg:0x%2x addr:0x%2x\n",
171 sc_access[i].reg_addr, sc_access[i].value);