Re: [alsa-devel] [PATCH] Add initial support of Mitac mioa701 device SoC.

On Tue, 2008-07-08 at 22:45 +0200, Robert Jarzmik wrote:

This machine driver enables sound functions on Mitac mio a701 smartphone. Build upon ASoC v2, it handles :

• rear speaker
• front speaker
• microphone
• GSM

I've committed both to git now. We can upstream when the dependencies are committed. Just some minor comments below.

A global "Mio Mode" switch is provided to cope with audio path setup. It ensures balance on audio chip line, which if not respected can produce a lot of heat and even fry the battery behind the wm9713 and the speaker amplificator.

Fwiw, there is a thermal IRQ on the WM9713 and you may want to use it for monitoring this. However it only interrupts at 150C so it may be a little high for this purpose.

It doesn't cope with :

• headset jack (will be integrade after jack support has hit ASoC v2)

This is still pending atm.

• master volume control (depending on current Mio Mode, will be submitted in a second patch)

If it depends on mode then have a look at the scenario/use case/mode manager for ALSA :-

http://opensource.wolfsonmicro.com/node/14

This is something I'd like to see used more as it does define a consistent interface to userspace.

Signed-off-by: Robert Jarzmik robert.jarzmik@free.fr

sound/soc/pxa/Kconfig | 9 + sound/soc/pxa/Makefile | 2 + sound/soc/pxa/mioa701_wm9713.c | 639 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 650 insertions(+), 0 deletions(-) create mode 100644 sound/soc/pxa/mioa701_wm9713.c

diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig index 7530227..ca60dec 100644 --- a/sound/soc/pxa/Kconfig +++ b/sound/soc/pxa/Kconfig @@ -139,3 +139,12 @@ config SND_PXA2XX_SOC_E800 help Say Y if you want to add support for SoC audio on the Toshiba e800 PDA

+config SND_PXA2XX_SOC_MIOA701

•    tristate "SoC Audio support for MIO A701"
  

•    depends on SND_PXA2XX_SOC
  

•    select SND_PXA2XX_SOC_AC97
  

•    select SND_SOC_WM9713
  

•    help
  

•      Say Y if you want to add support for SoC audio on the
  

•      MIO A701.
  

diff --git a/sound/soc/pxa/Makefile b/sound/soc/pxa/Makefile index fd45a09..ce171c3 100644 --- a/sound/soc/pxa/Makefile +++ b/sound/soc/pxa/Makefile @@ -21,6 +21,7 @@ snd-soc-spitz-objs := spitz.o snd-soc-amesom-tlv320-objs := amesom_tlv320.o snd-soc-magician-objs := magician.o snd-soc-h5000-objs := h5000.o +snd-soc-mioa701-objs := mioa701_wm9713.o snd-soc-mainstone-wm8753-objs := mainstone_wm8753.o snd-soc-mainstone-wm9713-objs := mainstone_wm9713.o snd-soc-mainstone-wm9712-objs := mainstone_wm9712.o @@ -34,6 +35,7 @@ obj-$(CONFIG_SND_PXA2XX_SOC_SPITZ) += snd-soc-spitz.o obj-$(CONFIG_SND_PXA2XX_SOC_AMESOM_TLV320) += snd-soc-amesom-tlv320.o obj-$(CONFIG_SND_PXA2XX_SOC_MAGICIAN) += snd-soc-magician.o obj-$(CONFIG_SND_PXA2XX_SOC_H5000) += snd-soc-h5000.o +obj-$(CONFIG_SND_PXA2XX_SOC_MIOA701) += snd-soc-mioa701.o obj-$(CONFIG_SND_PXA2XX_SOC_MAINSTONE_WM8753) += snd-soc-mainstone-wm8753.o obj-$(CONFIG_SND_PXA2XX_SOC_MAINSTONE_WM9713) += snd-soc-mainstone-wm9713.o obj-$(CONFIG_SND_PXA2XX_SOC_MAINSTONE_WM9712) += snd-soc-mainstone-wm9712.o diff --git a/sound/soc/pxa/mioa701_wm9713.c b/sound/soc/pxa/mioa701_wm9713.c new file mode 100644 index 0000000..4df42e0 --- /dev/null +++ b/sound/soc/pxa/mioa701_wm9713.c @@ -0,0 +1,639 @@ +/*

• • Handles the Mitac mioa701 SoC system
• • Copyright (C) 2008 Robert Jarzmik
• • 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; either version 2 of the License, or
• • (at your option) any later version.
• • 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
• */

+#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/platform_device.h>

+#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/initval.h> +#include <sound/ac97_codec.h>

+#include <asm/arch/audio.h>

+#include "pxa2xx-pcm.h" +#include "../codecs/wm9713.h"

+#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)

+#define AC97_GPIO_PULL 0x58

+/* define the scenarios */ +#define MIO_AUDIO_OFF 0 +#define MIO_GSM_AUDIO_HANDSET 1 +#define MIO_GSM_AUDIO_HEADSET 2 +#define MIO_GSM_AUDIO_HANDSFREE 3 +#define MIO_GSM_AUDIO_BLUETOOTH 4 +#define MIO_STEREO_TO_SPEAKER 5 +#define MIO_STEREO_TO_HEADPHONES 6 +#define MIO_CAPTURE_HANDSET 7 +#define MIO_CAPTURE_HEADSET 8 +#define MIO_CAPTURE_BLUETOOTH 9

+static int mio_scenario = MIO_AUDIO_OFF;

+static int phone_stream_start(struct snd_soc_card *card); +static int phone_stream_stop(struct snd_soc_card *card);

+struct mio_mixes_t {

• char *mixname;
• int val;

+};

+static const struct mio_mixes_t mixes_reset_all[] = {

• /* left HP mixer */
• {"Left HP Mixer PC Beep Playback Switch", 0},
• {"Left HP Mixer Voice Playback Switch", 0},
• {"Left HP Mixer Aux Playback Switch", 0},
• {"Left HP Mixer Bypass Playback Switch", 0},
• {"Left HP Mixer PCM Playback Switch", 0},
• {"Left HP Mixer MonoIn Playback Switch", 0},
• {"Left HP Mixer Capture Headphone Mux", 0},
• /* right HP mixer */
• {"Right HP Mixer PC Beep Playback Switch", 0},
• {"Right HP Mixer Voice Playback Switch", 0},
• {"Right HP Mixer Aux Playback Switch", 0},
• {"Right HP Mixer Bypass Playback Switch", 0},
• {"Right HP Mixer PCM Playback Switch", 0},
• {"Right HP Mixer MonoIn Playback Switch", 0},
• {"Right HP Mixer Capture Headphone Mux", 0},
• /* speaker mixer */
• {"Speaker Mixer PC Beep Playback Switch", 0},
• {"Speaker Mixer Voice Playback Switch", 0},
• {"Speaker Mixer Aux Playback Switch", 0},
• {"Speaker Mixer Bypass Playback Switch", 0},
• {"Speaker Mixer PCM Playback Switch", 0},
• {"Speaker Mixer MonoIn Playback Switch", 0},
• {"Speaker Mixer Mic 1 Sidetone Switch", 0},
• /* mono mixer */
• {"Mono Mixer PC Beep Playback Switch", 0},
• {"Mono Mixer Voice Playback Switch", 0},
• {"Mono Mixer Aux Playback Switch", 0},
• {"Mono Mixer Bypass Playback Switch", 0},
• {"Mono Mixer PCM Playback Switch", 0},
• {"Mono Mixer Capture Mono Mux", 0},
• {"Mono Mixer MonoIn Playback Switch", 0},
• {"Mono Mixer Mic 1 Sidetone Switch", 0},
• {"Mono Playback Switch", 0},
• /* headphone muxers */
• {"Left Headphone Out Mux", 0},
• {"Right Headphone Out Mux", 0},
• /* speaker muxer */
• {"Left Speaker Out Mux", 0},
• {"Right Speaker Out Mux", 0},
• /* Out3 muxer */
• { "Out 3 Mux", 0},
• { NULL, 0 }

+};

+static const struct mio_mixes_t mixes_gsm_call_headset[] = {

• /*

• * GSM Out to Headset HPL Path
  

• *   => PCBeep -> Headphone Mixer, Headphone Mixer -> HPL
  

• */
  

• { "Left HP Mixer PC Beep Playback Switch", 1 },
• { "Left Headphone Out Mux", 2 },
• /*

• * GSM Out to Headset HPR Path
  

• *   => MonoIn -> Headphone Mixer, Headphone Mixer -> HPR
  

• */
  

• { "Right HP Mixer MonoIn Playback Switch" , 1 },
• { "Right Headphone Out Mux", 2 },
• /*

• * LineL to GSM In
  

• * LineL -> MonoMixer, MonoMixer -> Mono, Unmute Mono Mixer
  

• */
  

• { "Mono Mixer Bypass Playback Switch", 1},
• { "Mono Out Mux", 2 },
• { "Mono Playback Switch", 1},
• { NULL, 0 }

+};

+static const struct mio_mixes_t mixes_gsm_call_handset[] = {

• /*

• * GSM Out to Front Speaker HPL Path
  

• *   => PCBeep -> Headphone Mixer, Headphone Mixer -> HPL
  

• */
  

• { "Left HP Mixer PC Beep Playback Switch", 1 },
• { "Left Headphone Out Mux", 2 },
• /*

• * GSM Out to Front Speaker Out3 Path
  

• *   => MonoIn -> Speaker Mixer, Speaker Mixer -> Inv1, Inv1 -> Out3
  

• */
  

• { "Speaker Mixer MonoIn Playback Switch" , 1 },
• { "DAC Inv Mux 1", 2 },
• { "Out 3 Mux", 2 },
• /*

• * MIC1 to GSM In
  

• *   => MIC1 -> MICA, MICA -> Mono Mixer, Mono Mixer -> MONO,
  

• *      UnMute Mono Mixer
  

• */
  

• { "Mic A Source", 0 },
• { "Mono Mixer Mic 1 Sidetone Switch", 1 },
• { "Mono Out Mux", 2 },
• { "Mono Playback Switch", 1},
• { NULL, 0 }

+};

+static const struct mio_mixes_t mixes_gsm_call_handsfree[] = {

• /*

• * GSM Out to Rear Speaker SPKL Path
  

• *   => PCBeep -> Speaker Mixer, Speaker Mixer -> Inv1, Inv1 -> SPKL
  

• */
  

• { "Speaker Mixer PC Beep Playback Switch", 1 },
• { "DAC Inv Mux 1", 2 },
• { "Left Speaker Out Mux", 4 },
• /*

• * GSM Out to Rear Speaker SPKR Path
  

• *   => MonoIn -> Speaker Mixer, Speaker Mixer -> SPKR
  

• */
  

• { "Speaker Mixer MonoIn Playback Switch" , 1 },
• { "Right Speaker Out Mux", 3 },
• /*

• * MIC1 to GSM In
  

• *   => MIC1 -> MICA, MICA -> Mono Mixer, Mono Mixer -> MONO,
  

• *      Unmute Mono Mixer
  

• */
  

• { "Mic A Source", 0 },
• { "Mono Mixer Mic 1 Sidetone Switch", 1 },
• { "Mono Out Mux", 2 },
• { "Mono Playback Switch", 1},
• { NULL, 0 }

+};

+static const struct mio_mixes_t mixes_stereo_to_rearspeaker[] = {

• /*

• * PCM to Rear Speakers
  

• *   => PCM -> Speaker Mixer, Speaker Mixer -> Inv1, Inv1 -> SPKL,
  

• *      Speaker Mixer -> SPKR
  

• */
  

• { "Speaker Mixer PCM Playback Switch", 1},
• { "DAC Inv Mux 1", 2 },
• { "Left Speaker Out Mux", 4 },
• { "Right Speaker Out Mux", 3 },
• { NULL, 0 }

+};

+struct snd_kcontrol *mioa701_kctrl_byname(struct snd_soc_card *card, char *n) +{

• struct snd_ctl_elem_id rid;
• memset(&rid, 0, sizeof(rid));
• rid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
• strncpy(rid.name, n, sizeof(rid.name));
• return snd_ctl_find_id(card->card, &rid);

+}

+void setup_muxers(struct snd_soc_card *card, const struct mio_mixes_t mixes[]) +{

• int pos = 0;
• struct snd_kcontrol *kctl;
• struct snd_ctl_elem_value ucontrol;
• char mname[44];
• while (mixes[pos].mixname) {

• memset(mname, 0, 44);
  

• strncpy(mname, mixes[pos].mixname, 43);
  

• kctl = mioa701_kctrl_byname(card, mname);
  

• memset(&ucontrol, 0, sizeof(ucontrol));
  

• if (kctl) {
  

• 	kctl->get(kctl, &ucontrol);
  

• 	ucontrol.value.enumerated.item[0] = mixes[pos].val;
  

• 	kctl->put(kctl, &ucontrol);
  

• }
  

• pos++;
  

• }

+}

+#define NB_ENDP ARRAY_SIZE(endpn) +static int set_scenario_endpoints(struct snd_soc_card *card, int scenario) +{

• static char *endpn[] = { "Front Speaker", "Rear Speaker",

• 		 "GSM Line Out", "GSM Line In",
  

• 		 "Headset Mic", "Front Mic", "Headset" };
  

• static const int typ_endps[][NB_ENDP] = {

• { 0, 0, 0, 0, 0, 0, 0 }, /* MIO_AUDIO_OFF		*/
  

• { 1, 0, 1, 1, 0, 1, 0 }, /* MIO_GSM_AUDIO_HANDSET	*/
  

• { 0, 0, 1, 1, 1, 0, 1 }, /* MIO_GSM_AUDIO_HEADSET	*/
  

• { 0, 1, 1, 1, 0, 1, 0 }, /* MIO_GSM_AUDIO_HANDSFREE*/
  

• { 0, 0, 1, 1, 0, 0, 0 }, /* MIO_GSM_AUDIO_BLUETOOTH*/
  

• { 0, 1, 0, 0, 0, 0, 0 }, /* MIO_STEREO_TO_SPEAKER	*/
  

• { 0, 0, 0, 0, 0, 0, 1 }, /* MIO_STEREO_TO_HEADPHONES	*/
  

• { 0, 0, 0, 0, 0, 1, 0 }, /* MIO_CAPTURE_HANDSET		*/
  

• { 0, 0, 0, 0, 1, 0, 0 }, /* MIO_CAPTURE_HEADSET		*/
  

• { 0, 0, 0, 0, 0, 0, 0 }, /* MIO_CAPTURE_BLUETOOTH	*/
  

• };
• const int *endps = typ_endps[scenario];
• int i;
• for (i = 0; i < NB_ENDP; i++)

• if (endps[i])
  

• 	snd_soc_dapm_enable_pin(card, endpn[i]);
  

• else
  

• 	snd_soc_dapm_disable_pin(card, endpn[i]);
  

• snd_soc_dapm_sync(card);
• return 0;

+}

+static int get_scenario(struct snd_kcontrol *kcontrol,

• 	struct snd_ctl_elem_value *ucontrol)
  

+{

• ucontrol->value.integer.value[0] = mio_scenario;
• return 0;

+}

+static int isPhoneMode(int scenario) +{

• int onPhone = 0;
• switch (scenario) {
• case MIO_GSM_AUDIO_HANDSET:
• case MIO_GSM_AUDIO_HEADSET:
• case MIO_GSM_AUDIO_BLUETOOTH:
• case MIO_GSM_AUDIO_HANDSFREE:

• onPhone = 1;
  

• }
• return onPhone;

+}

+static void switch_mio_mode(struct snd_soc_card *card, int new_scenario) +{

• int wasPhone = 0, willPhone = 0;
• wasPhone = isPhoneMode(mio_scenario);
• willPhone = isPhoneMode(new_scenario);
• mio_scenario = new_scenario;
• set_scenario_endpoints(card, mio_scenario);
• if (!wasPhone && willPhone)

• phone_stream_start(card);
  

• if (wasPhone && !willPhone)

• phone_stream_stop(card);
  

• setup_muxers(card, mixes_reset_all);
• switch (mio_scenario) {
• case MIO_STEREO_TO_SPEAKER:

• setup_muxers(card, mixes_stereo_to_rearspeaker);
  

• break;
  

• case MIO_GSM_AUDIO_HANDSET:

• setup_muxers(card, mixes_gsm_call_handset);
  

• break;
  

• case MIO_GSM_AUDIO_HANDSFREE:

• setup_muxers(card, mixes_gsm_call_handsfree);
  

• break;
  

• case MIO_GSM_AUDIO_HEADSET:

• setup_muxers(card, mixes_gsm_call_headset);
  

• break;
  

• default:

• break;
  

• }

+}

+static int set_scenario(struct snd_kcontrol *kcontrol,

• 	struct snd_ctl_elem_value *ucontrol)
  

+{

• struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
• if (mio_scenario == ucontrol->value.integer.value[0])

• return 0;
  

• switch_mio_mode(card, ucontrol->value.integer.value[0]);
• return 1;

+}

+static int phone_stream_start(struct snd_soc_card *card) +{

• snd_soc_dapm_stream_event(card, "AC97 HiFi",

• 		  SND_SOC_DAPM_STREAM_START);
  

• return 0;

+}

+static int phone_stream_stop(struct snd_soc_card *card) +{

• snd_soc_dapm_stream_event(card, "AC97 HiFi",

• 		  SND_SOC_DAPM_STREAM_STOP);
  

• return 0;

+}

+/* Use GPIO8 for rear speaker amplificator */ +static int rear_amp_power(struct snd_soc_codec *codec, int power) +{

• unsigned short reg;
• if (power) {

• reg = snd_soc_read(codec, AC97_GPIO_CFG);
  

• snd_soc_write(codec, AC97_GPIO_CFG, reg | 0x0100);
  

• reg = snd_soc_read(codec, AC97_GPIO_PULL);
  

• snd_soc_write(codec, AC97_GPIO_PULL, reg | (1<<15));
  

• } else {

• reg = snd_soc_read(codec, AC97_GPIO_CFG);
  

• snd_soc_write(codec, AC97_GPIO_CFG, reg & ~0x0100);
  

• reg = snd_soc_read(codec, AC97_GPIO_PULL);
  

• snd_soc_write(codec, AC97_GPIO_PULL, reg & ~(1<<15));
  

• }
• return 0;

+}

+static int rear_amp_event(struct snd_soc_dapm_widget *widget,

• 	  struct snd_kcontrol *kctl, int event)
  

+{

• struct snd_soc_codec *codec = widget->codec;
• int rc;
• if (SND_SOC_DAPM_EVENT_ON(event))

• rc = rear_amp_power(codec, 1);
  

• else

• rc = rear_amp_power(codec, 0);
  

This could be shortened to :-

return rear_amp_power(codec, SND_SOC_DAPM_EVENT_ON(event));

• return rc;

+}

+static const char *mio_scenarios[] = {

• "Off",
• "GSM Handset",
• "GSM Headset",
• "GSM Handsfree",
• "GSM Bluetooth",
• "PCM Speaker",
• "Headphones",
• "Capture Handset",
• "Capture Headset",
• "Capture Bluetooth"

+}; +static const struct soc_enum mio_scenario_enum[] = {

• SOC_ENUM_SINGLE_EXT(10, mio_scenarios),

+};

+static const struct snd_kcontrol_new mioa701_controls[] = {

• SOC_ENUM_EXT("Mio Mode", mio_scenario_enum[0],

•      get_scenario, set_scenario),
  

+};

+/* mioa701 machine dapm widgets */ +static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {

• SND_SOC_DAPM_SPK("Front Speaker", NULL),
• SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),
• SND_SOC_DAPM_MIC("Headset", NULL),
• SND_SOC_DAPM_LINE("GSM Line Out", NULL),
• SND_SOC_DAPM_LINE("GSM Line In", NULL),
• SND_SOC_DAPM_MIC("Headset Mic", NULL),
• SND_SOC_DAPM_MIC("Front Mic", NULL),

+};

+static const struct snd_soc_dapm_route audio_map[] = {

• /* Call Mic */
• {"Mic Bias", NULL, "Front Mic"},
• {"MIC1", NULL, "Mic Bias"},
• /* Headset Mic */
• {"LINEL", NULL, "Headset Mic"},
• {"LINER", NULL, "Headset Mic"},
• /* GSM Module */
• {"MONOIN", NULL, "GSM Line Out"},
• {"PCBEEP", NULL, "GSM Line Out"},
• {"GSM Line In", NULL, "MONO"},
• /* headphone connected to HPL, HPR */
• {"Headset", NULL, "HPL"},
• {"Headset", NULL, "HPR"},
• /* front speaker connected to HPL, OUT3 */
• {"Front Speaker", NULL, "HPL"},
• {"Front Speaker", NULL, "OUT3"},
• /* rear speaker connected to SPKL, SPKR */
• {"Rear Speaker", NULL, "SPKL"},
• {"Rear Speaker", NULL, "SPKR"},

+};

+static int mioa701_wm9713_init(struct snd_soc_card *card) +{

• struct snd_soc_codec *codec;
• struct snd_ac97_bus_ops *ac97_ops;
• int i, ret;
• unsigned short reg;
• codec = snd_soc_card_get_codec(card, wm9713_codec_id, 0);
• if (codec == NULL)

• return -ENODEV;
  

• ac97_ops = snd_soc_card_get_ac97_ops(card, pxa_ac97_hifi_dai_id);
• if (!ac97_ops) {

• printk(KERN_ERR "Unable to obtain AC97 operations\n");
  

• return -ENODEV;
  

• }
• /* register with AC97 bus for ad-hoc driver access */
• ret = snd_soc_new_ac97_codec(codec, ac97_ops, card->card, 0, 0);
• if (ret < 0)

• return ret;
  

• /* do a cold reset for the controller and then try

• * a warm reset followed by an optional cold reset for codec */
  

• ac97_ops->reset(codec->ac97);
• ac97_ops->warm_reset(codec->ac97);
• if (ac97_ops->read(codec->ac97, AC97_VENDOR_ID1) == 0) {

• printk(KERN_ERR "AC97 link error\n");
  

• return ret;
  

• }
• snd_soc_card_init_codec(codec, card);
• /* initialize mioa701 codec pins */
• set_scenario_endpoints(card, mio_scenario);
• /* Add mioa701 specific controls */
• for (i = 0; i < ARRAY_SIZE(mioa701_controls); i++) {

• ret = snd_ctl_add(card->card, snd_soc_cnew(&mioa701_controls[i],
  

• 					   card, NULL));
  

• if (ret)
  

• 	goto out;
  

• }
• /* Add mioa701 specific widgets */
• ret = snd_soc_dapm_new_controls(card, codec,

• 			ARRAY_AND_SIZE(mioa701_dapm_widgets));
  

• if (ret)

• goto out;
  

• /* Set up mioa701 specific audio path audio_mapnects */
• ret = snd_soc_dapm_add_routes(card, ARRAY_AND_SIZE(audio_map));
• if (ret)

• goto out;
  

• /* Prepare MIC input */
• reg = snd_soc_read(codec, AC97_3D_CONTROL);
• snd_soc_write(codec, AC97_3D_CONTROL, reg | 0xc000);
• snd_soc_dapm_sync(card);
• return 0;

+out:

• return ret;

+}

+static void mioa701_wm9713_exit(struct snd_soc_card *card) +{

I assume this will never be called in real life phone usage. If it is you could optionally shutdown/slow down the AC97 link to save power.

+}

+#ifdef CONFIG_PM +static int mioa701_wm9713_suspend(struct platform_device *pdev,

• 		  pm_message_t state)
  

+{

• struct snd_soc_card *card = platform_get_drvdata(pdev);
• struct snd_soc_codec *codec;
• codec = snd_soc_card_get_codec(card, wm9713_codec_id, 0);
• if (codec == NULL)

• return -ENODEV;
  

• rear_amp_power(codec, 0);
• return 0; /* snd_soc_card_suspend_pcms(card, state) doesn't work */

+}

+static int mioa701_wm9713_resume(struct platform_device *pdev) +{

• struct snd_soc_card *card = platform_get_drvdata(pdev);
• struct snd_soc_codec *codec;
• codec = snd_soc_card_get_codec(card, wm9713_codec_id, 0);
• if (codec == NULL)

• return -ENODEV;
  

• rear_amp_power(codec, 0);
• return 0; /* snd_soc_card_resume_pcms(card) doesn't work */

+}

+#else +#define mioa701_wm9713_suspend NULL +#define mioa701_wm9713_resume NULL +#endif

+static struct snd_soc_ops mioa701_hifi_ops = { +};

+static struct snd_soc_ops mioa701_aux_ops = { +};

+static struct snd_soc_pcm_config pcm_configs[] = {

• {

• .name		= "Aux",
  

• .codec		= wm9713_codec_id,
  

• .codec_dai	= wm9713_codec_aux_dai_id,
  

• .platform	= pxa_platform_id,
  

• .cpu_dai	= pxa_ac97_aux_dai_id,
  

• .playback	= 1,
  

• .ops		= &mioa701_aux_ops,
  

• },
• {

• .name		= "HiFi",
  

• .codec		= wm9713_codec_id,
  

• .codec_dai	= wm9713_codec_hifi_dai_id,
  

• .platform	= pxa_platform_id,
  

• .cpu_dai	= pxa_ac97_hifi_dai_id,
  

• .playback	= 1,
  

• .capture	= 1,
  

• .ops		= &mioa701_hifi_ops,
  

• },

+};

+static int mioa701_wm9713_probe(struct platform_device *pdev) +{

• struct snd_soc_card *card;
• int ret;
• card = snd_soc_card_create("mioa701", &pdev->dev,

• 		   SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
  

• if (card == NULL)

• return -ENOMEM;
  

• card->longname = "WM9713";
• card->init = mioa701_wm9713_init;
• card->exit = mioa701_wm9713_exit;
• card->private_data = pdev;
• platform_set_drvdata(pdev, card);
• ret = snd_soc_card_create_pcms(card, ARRAY_AND_SIZE(pcm_configs));
• if (ret < 0)

• goto errpcms;
  

• ret = snd_soc_card_register(card);
• if (ret < 0)

• goto errcard;
  

• return ret;

+errpcms:

• snd_soc_card_free(card);

+errcard:

• return ret;

+}

+static int __devexit mioa701_wm9713_remove(struct platform_device *pdev) +{

• struct snd_soc_card *card = platform_get_drvdata(pdev);
• snd_soc_card_free(card);
• return 0;

+}

+static struct platform_driver mioa701_wm9713_driver = {

• .probe = mioa701_wm9713_probe,
• .remove = __devexit_p(mioa701_wm9713_remove),
• .suspend = mioa701_wm9713_suspend,
• .resume = mioa701_wm9713_resume,
• .driver = {

• .name		= "mioa701-wm9713",
  

• .owner		= THIS_MODULE,
  

• },

+};

+static int __init mioa701_asoc_init(void) +{

• return platform_driver_register(&mioa701_wm9713_driver);

+}

+static void __exit mioa701_asoc_exit(void) +{

• platform_driver_unregister(&mioa701_wm9713_driver);

+}

+module_init(mioa701_asoc_init); +module_exit(mioa701_asoc_exit);

+/* Module information */ +MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)"); +MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701"); +MODULE_LICENSE("GPL");

Thanks

Liam

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