mirror of https://github.com/hak5/openwrt-owl.git
328 lines
8.5 KiB
Diff
328 lines
8.5 KiB
Diff
From 9a03a5a5c16698426ed181862b0dd30a0e0aad1a Mon Sep 17 00:00:00 2001
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From: Lars-Peter Clausen <lars@metafoo.de>
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Date: Sun, 1 Aug 2010 21:34:54 +0200
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Subject: [PATCH] Add N516 sound SoC board driver
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---
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sound/soc/jz4740/Kconfig | 8 ++
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sound/soc/jz4740/Makefile | 2 +
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sound/soc/jz4740/n516.c | 303 +++++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 313 insertions(+), 0 deletions(-)
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create mode 100644 sound/soc/jz4740/n516.c
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--- a/sound/soc/jz4740/Kconfig
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+++ b/sound/soc/jz4740/Kconfig
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@@ -21,3 +21,11 @@ config SND_JZ4740_SOC_QI_LB60
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help
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Say Y if you want to add support for ASoC audio on the Qi LB60 board
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a.k.a Qi Ben NanoNote.
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+
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+config SND_JZ4740_SOC_N516
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+ tristate "SoC Audio support for Hanvon N516 eBook reader"
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+ depends on SND_JZ4740_SOC && JZ4740_N516
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+ select SND_JZ4740_SOC_I2S
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+ select SND_SOC_JZ4740_CODEC
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+ help
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+ Say Y if you want to enable support for SoC audio on the Hanvon N516.
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--- a/sound/soc/jz4740/Makefile
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+++ b/sound/soc/jz4740/Makefile
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@@ -9,5 +9,7 @@ obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-
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# Jz4740 Machine Support
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snd-soc-qi-lb60-objs := qi_lb60.o
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+snd-soc-n516-objs := n516.o
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obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
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+obj-$(CONFIG_SND_JZ4740_SOC_N516) += snd-soc-n516.o
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--- /dev/null
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+++ b/sound/soc/jz4740/n516.c
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@@ -0,0 +1,288 @@
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+/*
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+ * Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
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+ * OpenInkpot project
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+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ *
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program; if not, write to the Free Software Foundation, Inc.,
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+ * 675 Mass Ave, Cambridge, MA 02139, USA.
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+ *
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/interrupt.h>
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+#include <linux/platform_device.h>
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+#include <sound/soc.h>
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+#include <sound/soc-dapm.h>
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+#include <sound/jack.h>
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+#include <linux/gpio.h>
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+#include <linux/workqueue.h>
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+
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+#include "../codecs/jz4740.h"
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+#include "jz4740-pcm.h"
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+#include "jz4740-i2s.h"
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+
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+#include <asm/mach-jz4740/board-n516.h>
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+
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+enum {
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+ N516_SPEAKER_AUTO = 0,
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+ N516_SPEAKER_OFF = 1,
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+ N516_SPEAKER_ON = 2,
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+};
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+
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+static int n516_speaker_mode;
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+static struct snd_soc_codec *n516_codec;
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+static struct work_struct n516_headphone_work;
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+
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+static void n516_ext_control(void)
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+{
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+ if (!n516_codec)
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+ return;
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+
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+ switch (n516_speaker_mode) {
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+ case N516_SPEAKER_ON:
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+ snd_soc_dapm_enable_pin(n516_codec, "Speaker");
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+ break;
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+ case N516_SPEAKER_OFF:
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+ snd_soc_dapm_disable_pin(n516_codec, "Speaker");
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+ break;
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+ case N516_SPEAKER_AUTO:
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+ if (snd_soc_dapm_get_pin_status(n516_codec, "Headphone"))
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+ snd_soc_dapm_disable_pin(n516_codec, "Speaker");
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+ else
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+ snd_soc_dapm_enable_pin(n516_codec, "Speaker");
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+ break;
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+ default:
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+ break;
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+ }
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+
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+ /* signal a DAPM event */
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+ snd_soc_dapm_sync(n516_codec);
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+}
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+
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+static int n516_speaker_event(struct snd_soc_dapm_widget *widget,
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+ struct snd_kcontrol *ctrl, int event)
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+{
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+ int on = !SND_SOC_DAPM_EVENT_OFF(event);
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+
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+ gpio_set_value(GPIO_SPEAKER_ENABLE, on);
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+
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+ return 0;
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+}
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+
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+static void n516_headphone_event_work(struct work_struct *work)
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+{
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+ n516_ext_control();
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+}
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+
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+static int n516_headphone_event(struct snd_soc_dapm_widget *widget,
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+ struct snd_kcontrol *ctrl, int event)
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+{
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+ /* We can't call soc_dapm_sync from a event handler */
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+ if (event & (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD))
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+ schedule_work(&n516_headphone_work);
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+ return 0;
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+}
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+
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+static const struct snd_soc_dapm_widget n516_widgets[] = {
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+ SND_SOC_DAPM_SPK("Speaker", n516_speaker_event),
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+ SND_SOC_DAPM_HP("Headphone", n516_headphone_event),
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+ SND_SOC_DAPM_MIC("Mic", NULL),
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+};
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+
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+static const struct snd_soc_dapm_route n516_routes[] = {
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+ {"Mic", NULL, "MIC"},
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+ {"Speaker", NULL, "LOUT"},
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+ {"Speaker", NULL, "ROUT"},
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+ {"Headphone", NULL, "LOUT"},
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+ {"Headphone", NULL, "ROUT"},
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+};
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+
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+static const char *n516_speaker_modes[] = {"Auto", "Off", "On"};
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+static const struct soc_enum n516_speaker_mode_enum =
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+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(n516_speaker_modes), n516_speaker_modes);
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+
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+static int n516_get_speaker_mode(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ ucontrol->value.integer.value[0] = n516_speaker_mode;
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+ return 0;
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+}
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+
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+static int n516_set_speaker_mode(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ if (n516_speaker_mode == ucontrol->value.integer.value[0])
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+ return 0;
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+
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+ n516_speaker_mode = ucontrol->value.integer.value[0];
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+ n516_ext_control();
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+ return 1;
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+}
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+
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+static const struct snd_kcontrol_new n516_controls[] = {
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+ SOC_ENUM_EXT("Speaker Function", n516_speaker_mode_enum,
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+ n516_get_speaker_mode, n516_set_speaker_mode),
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+};
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+
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+#define N516_DAIFMT (SND_SOC_DAIFMT_I2S | \
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+ SND_SOC_DAIFMT_NB_NF | \
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+ SND_SOC_DAIFMT_CBM_CFM)
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+
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+static int n516_codec_init(struct snd_soc_codec *codec)
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+{
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+ int ret;
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+ struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
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+
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+ n516_codec = codec;
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+
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+ snd_soc_dapm_nc_pin(codec, "LIN");
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+ snd_soc_dapm_nc_pin(codec, "RIN");
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+
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+ ret = snd_soc_dai_set_fmt(cpu_dai, N516_DAIFMT);
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+ if (ret < 0) {
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+ dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
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+ return ret;
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+ }
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+
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+ ret = snd_soc_add_controls(codec, n516_controls,
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+ ARRAY_SIZE(n516_controls));
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+ if (ret) {
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+ dev_err(codec->dev, "Failed to add controls: %d\n", ret);
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+ return ret;
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+ }
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+
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+ ret = snd_soc_dapm_new_controls(codec, n516_widgets,
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+ ARRAY_SIZE(n516_widgets));
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+ if (ret) {
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+ dev_err(codec->dev, "Failed to add dapm controls: %d\n", ret);
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+ return ret;
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+ }
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+
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+ ret = snd_soc_dapm_add_routes(codec, n516_routes, ARRAY_SIZE(n516_routes));
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+ if (ret) {
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+ dev_err(codec->dev, "Failed to add dapm routes: %d\n", ret);
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+ return ret;
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+ }
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+
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+ snd_soc_dapm_sync(codec);
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+
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+ return 0;
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+}
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+
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+static struct snd_soc_dai_link n516_dai = {
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+ .name = "jz-codec",
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+ .stream_name = "jz4740",
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+ .cpu_dai = &jz4740_i2s_dai,
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+ .codec_dai = &jz4740_codec_dai,
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+ .init = n516_codec_init,
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+};
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+
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+static struct snd_soc_card n516_card = {
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+ .name = "N516",
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+ .dai_link = &n516_dai,
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+ .num_links = 1,
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+ .platform = &jz4740_soc_platform,
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+};
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+
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+static struct snd_soc_device n516_snd_devdata = {
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+ .card = &n516_card,
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+ .codec_dev = &soc_codec_dev_jz4740_codec,
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+};
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+
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+static struct platform_device *n516_snd_device;
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+
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+static struct snd_soc_jack n516_hp_jack;
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+
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+static struct snd_soc_jack_pin n516_hp_pin = {
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+ .pin = "Headphone",
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+ .mask = SND_JACK_HEADPHONE,
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+};
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+
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+static struct snd_soc_jack_gpio n516_hp_gpio = {
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+ .gpio = GPIO_HPHONE_DETECT,
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+ .name = "Headphone detect",
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+ .report = SND_JACK_HEADPHONE,
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+ .debounce_time = 100,
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+};
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+
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+static int __init n516_add_headphone_jack(void)
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+{
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+ int ret;
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+
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+ ret = snd_soc_jack_new(&n516_card, "Headphone jack",
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+ SND_JACK_HEADPHONE, &n516_hp_jack);
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+ if (ret)
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+ return ret;
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+
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+ ret = snd_soc_jack_add_pins(&n516_hp_jack, 1, &n516_hp_pin);
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+ if (ret)
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+ return ret;
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+
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+ ret = snd_soc_jack_add_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
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+
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+ return ret;
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+}
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+
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+static int __init n516_init(void)
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+{
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+ int ret;
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+
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+ n516_snd_device = platform_device_alloc("soc-audio", -1);
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+
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+ if (!n516_snd_device)
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+ return -ENOMEM;
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+
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+ ret = gpio_request(GPIO_SPEAKER_ENABLE, "Speaker enable");
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+ if (ret) {
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+ pr_err("n516 snd: Failed to request SPEAKER_ENABLE GPIO(%d): %d\n",
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+ GPIO_SPEAKER_ENABLE, ret);
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+ goto err_device_put;
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+ }
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+
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+ gpio_direction_output(GPIO_SPEAKER_ENABLE, 0);
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+ INIT_WORK(&n516_headphone_work, n516_headphone_event_work);
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+
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+ platform_set_drvdata(n516_snd_device, &n516_snd_devdata);
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+ n516_snd_devdata.dev = &n516_snd_device->dev;
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+ ret = platform_device_add(n516_snd_device);
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+ if (ret) {
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+ pr_err("n516 snd: Failed to add snd soc device: %d\n", ret);
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+ goto err_unset_pdata;
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+ }
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+
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+ ret = n516_add_headphone_jack();
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+ /* We can live without it, so just print a warning */
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+ if (ret)
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+ pr_warning("n516 snd: Failed to initalise headphone jack: %d\n", ret);
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+
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+ return 0;
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+
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+err_unset_pdata:
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+ platform_set_drvdata(n516_snd_device, NULL);
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+/*err_gpio_free_speaker:*/
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+ gpio_free(GPIO_SPEAKER_ENABLE);
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+err_device_put:
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+ platform_device_put(n516_snd_device);
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+
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+ return ret;
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+}
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+module_init(n516_init);
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+
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+static void __exit n516_exit(void)
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+{
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+ snd_soc_jack_free_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
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+ gpio_free(GPIO_SPEAKER_ENABLE);
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+ platform_device_unregister(n516_snd_device);
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+}
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+module_exit(n516_exit);
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+
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+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
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+MODULE_DESCRIPTION("ALSA SoC N516 Audio support");
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+MODULE_LICENSE("GPL v2");
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