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linux_dsm_epyc7002/sound/pci/hda/patch_si3054.c
Takashi Iwai bbbc7e8502 ALSA: hda - Allocate hda_pcm objects dynamically 
So far, the hda_codec object kept the hda_pcm list in an array, and
the codec driver was expected to assign the array.  However, this
makes the object life cycle management harder, because the assigned
array is freed at the codec driver detach while it might be still
accessed by the opened streams.

In this patch, we allocate each hda_pcm object dynamically and manage
it as a linked list.  Each object has a kref refcount, and both the
codec driver binder and the PCM open/close touches it, so that the
object won't be freed while in use.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-03 11:26:24 +01:00

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/*
* Universal Interface for Intel High Definition Audio Codec
*
* HD audio interface patch for Silicon Labs 3054/5 modem codec
*
* Copyright (c) 2005 Sasha Khapyorsky <sashak@alsa-project.org>
* Takashi Iwai <tiwai@suse.de>
*
*
* This driver 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; either version 2 of the License, or
* (at your option) any later version.
*
* This driver 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
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include "hda_codec.h"
#include "hda_local.h"
/* si3054 verbs */
#define SI3054_VERB_READ_NODE 0x900
#define SI3054_VERB_WRITE_NODE 0x100
/* si3054 nodes (registers) */
#define SI3054_EXTENDED_MID 2
#define SI3054_LINE_RATE 3
#define SI3054_LINE_LEVEL 4
#define SI3054_GPIO_CFG 5
#define SI3054_GPIO_POLARITY 6
#define SI3054_GPIO_STICKY 7
#define SI3054_GPIO_WAKEUP 8
#define SI3054_GPIO_STATUS 9
#define SI3054_GPIO_CONTROL 10
#define SI3054_MISC_AFE 11
#define SI3054_CHIPID 12
#define SI3054_LINE_CFG1 13
#define SI3054_LINE_STATUS 14
#define SI3054_DC_TERMINATION 15
#define SI3054_LINE_CONFIG 16
#define SI3054_CALLPROG_ATT 17
#define SI3054_SQ_CONTROL 18
#define SI3054_MISC_CONTROL 19
#define SI3054_RING_CTRL1 20
#define SI3054_RING_CTRL2 21
/* extended MID */
#define SI3054_MEI_READY 0xf
/* line level */
#define SI3054_ATAG_MASK 0x00f0
#define SI3054_DTAG_MASK 0xf000
/* GPIO bits */
#define SI3054_GPIO_OH 0x0001
#define SI3054_GPIO_CID 0x0002
/* chipid and revisions */
#define SI3054_CHIPID_CODEC_REV_MASK 0x000f
#define SI3054_CHIPID_DAA_REV_MASK 0x00f0
#define SI3054_CHIPID_INTERNATIONAL 0x0100
#define SI3054_CHIPID_DAA_ID 0x0f00
#define SI3054_CHIPID_CODEC_ID (1<<12)
/* si3054 codec registers (nodes) access macros */
#define GET_REG(codec,reg) (snd_hda_codec_read(codec,reg,0,SI3054_VERB_READ_NODE,0))
#define SET_REG(codec,reg,val) (snd_hda_codec_write(codec,reg,0,SI3054_VERB_WRITE_NODE,val))
#define SET_REG_CACHE(codec,reg,val) \
snd_hda_codec_write_cache(codec,reg,0,SI3054_VERB_WRITE_NODE,val)
struct si3054_spec {
unsigned international;
};
/*
* Modem mixer
*/
#define PRIVATE_VALUE(reg,mask) ((reg<<16)|(mask&0xffff))
#define PRIVATE_REG(val) ((val>>16)&0xffff)
#define PRIVATE_MASK(val) (val&0xffff)
#define si3054_switch_info snd_ctl_boolean_mono_info
static int si3054_switch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *uvalue)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
u16 reg = PRIVATE_REG(kcontrol->private_value);
u16 mask = PRIVATE_MASK(kcontrol->private_value);
uvalue->value.integer.value[0] = (GET_REG(codec, reg)) & mask ? 1 : 0 ;
return 0;
}
static int si3054_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *uvalue)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
u16 reg = PRIVATE_REG(kcontrol->private_value);
u16 mask = PRIVATE_MASK(kcontrol->private_value);
if (uvalue->value.integer.value[0])
SET_REG_CACHE(codec, reg, (GET_REG(codec, reg)) | mask);
else
SET_REG_CACHE(codec, reg, (GET_REG(codec, reg)) & ~mask);
return 0;
}
#define SI3054_KCONTROL(kname,reg,mask) { \
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.name = kname, \
.subdevice = HDA_SUBDEV_NID_FLAG | reg, \
.info = si3054_switch_info, \
.get = si3054_switch_get, \
.put = si3054_switch_put, \
.private_value = PRIVATE_VALUE(reg,mask), \
}
static const struct snd_kcontrol_new si3054_modem_mixer[] = {
SI3054_KCONTROL("Off-hook Switch", SI3054_GPIO_CONTROL, SI3054_GPIO_OH),
SI3054_KCONTROL("Caller ID Switch", SI3054_GPIO_CONTROL, SI3054_GPIO_CID),
{}
};
static int si3054_build_controls(struct hda_codec *codec)
{
return snd_hda_add_new_ctls(codec, si3054_modem_mixer);
}
/*
* PCM callbacks
*/
static int si3054_pcm_prepare(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
unsigned int stream_tag,
unsigned int format,
struct snd_pcm_substream *substream)
{
u16 val;
SET_REG(codec, SI3054_LINE_RATE, substream->runtime->rate);
val = GET_REG(codec, SI3054_LINE_LEVEL);
val &= 0xff << (8 * (substream->stream != SNDRV_PCM_STREAM_PLAYBACK));
val |= ((stream_tag & 0xf) << 4) << (8 * (substream->stream == SNDRV_PCM_STREAM_PLAYBACK));
SET_REG(codec, SI3054_LINE_LEVEL, val);
snd_hda_codec_setup_stream(codec, hinfo->nid,
stream_tag, 0, format);
return 0;
}
static int si3054_pcm_open(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
static unsigned int rates[] = { 8000, 9600, 16000 };
static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = ARRAY_SIZE(rates),
.list = rates,
.mask = 0,
};
substream->runtime->hw.period_bytes_min = 80;
return snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
}
static const struct hda_pcm_stream si3054_pcm = {
.substreams = 1,
.channels_min = 1,
.channels_max = 1,
.nid = 0x1,
.rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_KNOT,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.maxbps = 16,
.ops = {
.open = si3054_pcm_open,
.prepare = si3054_pcm_prepare,
},
};
static int si3054_build_pcms(struct hda_codec *codec)
{
struct hda_pcm *info;
info = snd_hda_codec_pcm_new(codec, "Si3054 Modem");
if (!info)
return -ENOMEM;
info->stream[SNDRV_PCM_STREAM_PLAYBACK] = si3054_pcm;
info->stream[SNDRV_PCM_STREAM_CAPTURE] = si3054_pcm;
info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = codec->mfg;
info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = codec->mfg;
info->pcm_type = HDA_PCM_TYPE_MODEM;
return 0;
}
/*
* Init part
*/
static int si3054_init(struct hda_codec *codec)
{
struct si3054_spec *spec = codec->spec;
unsigned wait_count;
u16 val;
snd_hda_codec_write(codec, AC_NODE_ROOT, 0, AC_VERB_SET_CODEC_RESET, 0);
snd_hda_codec_write(codec, codec->mfg, 0, AC_VERB_SET_STREAM_FORMAT, 0);
SET_REG(codec, SI3054_LINE_RATE, 9600);
SET_REG(codec, SI3054_LINE_LEVEL, SI3054_DTAG_MASK|SI3054_ATAG_MASK);
SET_REG(codec, SI3054_EXTENDED_MID, 0);
wait_count = 10;
do {
msleep(2);
val = GET_REG(codec, SI3054_EXTENDED_MID);
} while ((val & SI3054_MEI_READY) != SI3054_MEI_READY && wait_count--);
if((val&SI3054_MEI_READY) != SI3054_MEI_READY) {
codec_err(codec, "si3054: cannot initialize. EXT MID = %04x\n", val);
/* let's pray that this is no fatal error */
/* return -EACCES; */
}
SET_REG(codec, SI3054_GPIO_POLARITY, 0xffff);
SET_REG(codec, SI3054_GPIO_CFG, 0x0);
SET_REG(codec, SI3054_MISC_AFE, 0);
SET_REG(codec, SI3054_LINE_CFG1,0x200);
if((GET_REG(codec,SI3054_LINE_STATUS) & (1<<6)) == 0) {
codec_dbg(codec,
"Link Frame Detect(FDT) is not ready (line status: %04x)\n",
GET_REG(codec,SI3054_LINE_STATUS));
}
spec->international = GET_REG(codec, SI3054_CHIPID) & SI3054_CHIPID_INTERNATIONAL;
return 0;
}
static void si3054_free(struct hda_codec *codec)
{
kfree(codec->spec);
}
/*
*/
static const struct hda_codec_ops si3054_patch_ops = {
.build_controls = si3054_build_controls,
.build_pcms = si3054_build_pcms,
.init = si3054_init,
.free = si3054_free,
};
static int patch_si3054(struct hda_codec *codec)
{
struct si3054_spec *spec = kzalloc(sizeof(*spec), GFP_KERNEL);
if (spec == NULL)
return -ENOMEM;
codec->spec = spec;
codec->patch_ops = si3054_patch_ops;
return 0;
}
/*
* patch entries
*/
static const struct hda_codec_preset snd_hda_preset_si3054[] = {
{ .id = 0x163c3055, .name = "Si3054", .patch = patch_si3054 },
{ .id = 0x163c3155, .name = "Si3054", .patch = patch_si3054 },
{ .id = 0x11c13026, .name = "Si3054", .patch = patch_si3054 },
{ .id = 0x11c13055, .name = "Si3054", .patch = patch_si3054 },
{ .id = 0x11c13155, .name = "Si3054", .patch = patch_si3054 },
{ .id = 0x10573055, .name = "Si3054", .patch = patch_si3054 },
{ .id = 0x10573057, .name = "Si3054", .patch = patch_si3054 },
{ .id = 0x10573155, .name = "Si3054", .patch = patch_si3054 },
/* VIA HDA on Clevo m540 */
{ .id = 0x11063288, .name = "Si3054", .patch = patch_si3054 },
/* Asus A8J Modem (SM56) */
{ .id = 0x15433155, .name = "Si3054", .patch = patch_si3054 },
/* LG LW20 modem */
{ .id = 0x18540018, .name = "Si3054", .patch = patch_si3054 },
{}
};
MODULE_ALIAS("snd-hda-codec-id:163c3055");
MODULE_ALIAS("snd-hda-codec-id:163c3155");
MODULE_ALIAS("snd-hda-codec-id:11c13026");
MODULE_ALIAS("snd-hda-codec-id:11c13055");
MODULE_ALIAS("snd-hda-codec-id:11c13155");
MODULE_ALIAS("snd-hda-codec-id:10573055");
MODULE_ALIAS("snd-hda-codec-id:10573057");
MODULE_ALIAS("snd-hda-codec-id:10573155");
MODULE_ALIAS("snd-hda-codec-id:11063288");
MODULE_ALIAS("snd-hda-codec-id:15433155");
MODULE_ALIAS("snd-hda-codec-id:18540018");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Si3054 HD-audio modem codec");
static struct hda_codec_driver si3054_driver = {
.preset = snd_hda_preset_si3054,
};
module_hda_codec_driver(si3054_driver);
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