mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-09 15:49:42 +02:00
28ea12b3b3
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23421 3c298f89-4303-0410-b956-a3cf2f4a3e73
210 lines
5.7 KiB
Diff
210 lines
5.7 KiB
Diff
From d2e198ed9ade74e2cb042ade405071ab58b11e33 Mon Sep 17 00:00:00 2001
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From: Lars-Peter Clausen <lars@metafoo.de>
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Date: Sat, 24 Apr 2010 12:38:41 +0200
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Subject: [PATCH] Add N526 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/n526.c | 169 +++++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 179 insertions(+), 0 deletions(-)
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create mode 100644 sound/soc/jz4740/n526.c
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--- a/sound/soc/jz4740/Kconfig
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+++ b/sound/soc/jz4740/Kconfig
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@@ -29,3 +29,11 @@ config SND_JZ4740_SOC_N516
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select SND_SOC_JZCODEC
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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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+
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+config SND_JZ4740_SOC_N526
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+ tristate "SoC Audio support for Hanvon N526 eBook reader"
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+ depends on SND_JZ4740_SOC && JZ4740_N526
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+ select SND_JZ4740_SOC_I2S
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+ select SND_SOC_JZCODEC
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+ help
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+ Say Y if you want to enable support for SoC audio on the Hanvon N526.
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--- a/sound/soc/jz4740/Makefile
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+++ b/sound/soc/jz4740/Makefile
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@@ -10,6 +10,8 @@ obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-
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# Jz4740 Machine Support
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snd-soc-qi-lb60-objs := qi_lb60.o
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snd-soc-n516-objs := n516.o
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+snd-soc-n526-objs := n526.o
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obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
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obj-$(CONFIG_SND_JZ4740_SOC_N516) += snd-soc-n516.o
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+obj-$(CONFIG_SND_JZ4740_SOC_N526) += snd-soc-n526.o
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--- /dev/null
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+++ b/sound/soc/jz4740/n526.c
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@@ -0,0 +1,169 @@
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+/*
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+ * Copyright (C) 2009, 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/moduleparam.h>
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+#include <linux/timer.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 <linux/gpio.h>
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+
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+#include "../codecs/jzcodec.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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+#define N526_AMP_EN_GPIO JZ_GPIO_PORTD(4)
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+
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+static int n526_spk_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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+ gpio_set_value(N526_AMP_EN_GPIO, !SND_SOC_DAPM_EVENT_OFF(event));
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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 n526_widgets[] = {
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+ SND_SOC_DAPM_SPK("Speaker", n526_spk_event),
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+ SND_SOC_DAPM_HP("Headphone", NULL),
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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 n526_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 struct snd_kcontrol_new n526_controls[] = {
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+ SOC_DAPM_PIN_SWITCH("Speaker"),
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+};
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+
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+#define N526_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 n526_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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+ struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
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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(codec_dai, N526_DAIFMT);
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+ if (ret < 0) {
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+ dev_err(codec->dev, "Failed to set codec 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_dai_set_fmt(cpu_dai, N526_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_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
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+ SND_SOC_CLOCK_IN);
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+ if (ret < 0) {
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+ dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
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+ return ret;
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+ }
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+
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+ snd_soc_dapm_new_controls(codec, n526_widgets, ARRAY_SIZE(n526_widgets));
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+
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+ snd_soc_add_controls(codec, n526_controls,
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+ ARRAY_SIZE(n526_controls));
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+
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+ snd_soc_dapm_add_routes(codec, n526_routes, ARRAY_SIZE(n526_routes));
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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 n526_dai = {
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+ .name = "jz-codec",
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+ .stream_name = "JZCODEC",
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+ .cpu_dai = &jz4740_i2s_dai,
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+ .codec_dai = &jz_codec_dai,
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+ .init = n526_codec_init,
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+};
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+
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+static struct snd_soc_card n526 = {
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+ .name = "N526",
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+ .dai_link = &n526_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 n526_snd_devdata = {
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+ .card = &n526,
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+ .codec_dev = &soc_codec_dev_jzcodec,
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+};
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+
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+static struct platform_device *n526_snd_device;
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+
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+static int __init n526_init(void)
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+{
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+ int ret;
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+
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+ n526_snd_device = platform_device_alloc("soc-audio", -1);
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+
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+ if (!n526_snd_device)
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+ return -ENOMEM;
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+
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+ ret = gpio_request(N526_AMP_EN_GPIO, "AMP");
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+ if (ret) {
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+ pr_err("n526 snd: Failed to request AMP GPIO(%d): %d\n",
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+ N526_AMP_EN_GPIO, ret);
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+ goto err_device_put;
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+ }
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+
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+ gpio_direction_output(JZ_GPIO_PORTD(4), 0);
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+
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+ platform_set_drvdata(n526_snd_device, &n526_snd_devdata);
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+ n526_snd_devdata.dev = &n526_snd_device->dev;
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+ ret = platform_device_add(n526_snd_device);
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+ if (ret) {
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+ pr_err("n526 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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+ return 0;
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+
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+err_unset_pdata:
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+ platform_set_drvdata(n526_snd_device, NULL);
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+ gpio_free(N526_AMP_EN_GPIO);
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+err_device_put:
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+ platform_device_put(n526_snd_device);
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+
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+ return ret;
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+}
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+module_init(n526_init);
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+
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+static void __exit n526_exit(void)
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+{
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+ gpio_free(N526_AMP_EN_GPIO);
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+ platform_device_unregister(n526_snd_device);
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+}
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+module_exit(n526_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 N526 audio support");
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+MODULE_LICENSE("GPL v2");
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