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path: root/sound/soc/wmt/wmt_wm8994.c
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Diffstat (limited to 'sound/soc/wmt/wmt_wm8994.c')
-rwxr-xr-xsound/soc/wmt/wmt_wm8994.c304
1 files changed, 304 insertions, 0 deletions
diff --git a/sound/soc/wmt/wmt_wm8994.c b/sound/soc/wmt/wmt_wm8994.c
new file mode 100755
index 00000000..8d4cebf9
--- /dev/null
+++ b/sound/soc/wmt/wmt_wm8994.c
@@ -0,0 +1,304 @@
+/*
+ * wmt_wm8994.c
+ *
+ * Copyright (C) 2010 Samsung Electronics Co.Ltd
+ * Author: Chanwoo Choi <cw00.choi@samsung.com>
+ *
+ * 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.
+ *
+ */
+
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include <asm/mach-types.h>
+#include <mach/gpio.h>
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc-dapm.h>
+#include <sound/hwdep.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+
+#include "wmt-soc.h"
+#include "wmt-pcm.h"
+#include "wmt_hwdep.h"
+#include "../codecs/wm8994.h"
+#include <linux/mfd/wm8994/registers.h>
+#include <linux/mfd/wm8994/core.h>
+
+#include <linux/i2c.h>
+
+static struct snd_soc_card wmt;
+static struct platform_device *wmt_snd_device;
+static int wmt_incall = 0;
+
+extern int wmt_getsyspara(char *varname, unsigned char *varval, int *varlen);
+extern void wmt_set_i2s_share_pin(void);
+
+static const struct snd_pcm_hardware wmt_voice_hardware = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_RESUME,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rate_min = 8000,
+ .rate_max = 8000,
+ .period_bytes_min = 16,
+ .period_bytes_max = 4 * 1024,
+ .periods_min = 2,
+ .periods_max = 16,
+ .buffer_bytes_max = 16 * 1024,
+};
+
+static int wmt_snd_suspend_post(struct snd_soc_card *card)
+{
+ /* Disable BIT15:I2S clock, BIT4:ARFP clock, BIT3:ARF clock */
+ PMCEU_VAL &= ~(BIT15 | BIT4 | BIT3);
+ return 0;
+}
+
+static int wmt_snd_resume_pre(struct snd_soc_card *card)
+{
+ /* Enable MCLK before VT1602 codec enable, otherwise the codec will be disabled. */
+
+ /* set to 24.576MHz */
+ auto_pll_divisor(DEV_I2S, CLK_ENABLE , 0, 0);
+ auto_pll_divisor(DEV_I2S, SET_PLLDIV, 1, 24576);
+ /* Enable BIT4:ARFP clock, BIT3:ARF clock */
+ PMCEU_VAL |= (BIT4 | BIT3);
+ /* Enable BIT2:AUD clock */
+ PMCE3_VAL |= BIT2;
+
+ wmt_set_i2s_share_pin();
+
+ return 0;
+}
+
+static int wmt_wm8994_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ int ret = 0;
+ unsigned int pll_in = 48000;
+ unsigned int pll_out = 12000000;
+
+ /* Set the codec system clock for DAC and ADC */
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_LRCLK,
+ pll_in, pll_out);
+ if (ret < 0)
+ return ret;
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, pll_out,
+ SND_SOC_CLOCK_IN);
+
+ wmt_soc_hwdep_new(rtd->codec);
+
+ return 0;
+}
+
+static int wmt_hifi_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int ret = 0;
+ unsigned int pll_in = 48000;
+ unsigned int pll_out = 12000000;
+
+ /* Set codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF);
+ if (ret< 0) {
+ printk("<<ret:%d snd_soc_dai_set_fmt(codec) hifi\n", ret);
+ return ret;
+ }
+
+ /* Set cpu DAI configuration for I2S */
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S);
+ if (ret < 0) {
+ printk("<<ret:%d snd_soc_dai_set_fmt(cpu) hifi\n", ret);
+ return ret;
+ }
+
+ /* Set the codec system clock for DAC and ADC */
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_LRCLK,
+ pll_in, pll_out);
+ if (ret < 0) {
+ printk("<<ret:%d snd_soc_dai_set_pll hifi\n", ret);
+ return ret;
+ }
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, pll_out,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ printk("<<ret:%d snd_soc_dai_set_sysclk hifi\n", ret);
+
+ if (!wmt_incall)
+ snd_soc_update_bits(codec_dai->codec, WM8994_CLOCKING_1, WM8994_SYSCLK_SRC, 0);
+
+ return 0;
+}
+
+static int wmt_voice_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int ret;
+
+ ret = snd_soc_set_runtime_hwparams(substream, &wmt_voice_hardware);
+
+ /* Ensure that buffer size is a multiple of period size */
+ ret = snd_pcm_hw_constraint_integer(runtime,SNDRV_PCM_HW_PARAM_PERIODS);
+ return ret;
+}
+
+static int wmt_voice_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ int ret = 0;
+ unsigned int pll_in = 2048000;
+ unsigned int pll_out = 12288000;
+
+ if (params_rate(params) != 8000)
+ return -EINVAL;
+
+ /* Set codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
+ SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0) {
+ printk("<<ret:%d snd_soc_dai_set_fmt voice\n", ret);
+ return ret;
+ }
+
+ /* Set the codec system clock for DAC and ADC */
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL2, WM8994_FLL_SRC_BCLK,
+ pll_in, pll_out);
+ if (ret < 0) {
+ printk("<<ret:%d snd_soc_dai_set_pll voice\n", ret);
+ return ret;
+ }
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL2, pll_out,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ printk("<<ret:%d snd_soc_dai_set_sysclk voice\n", ret);
+
+ wmt_incall = 1;
+ return ret;
+}
+
+static int wmt_voice_hw_free(struct snd_pcm_substream *substream)
+{
+ wmt_incall = 0;
+ return 0;
+}
+
+static struct snd_soc_ops wmt_hifi_ops = {
+ .hw_params = wmt_hifi_hw_params,
+};
+
+static struct snd_soc_ops wmt_voice_ops = {
+ .startup = wmt_voice_startup,
+ .hw_params = wmt_voice_hw_params,
+ .hw_free = wmt_voice_hw_free,
+};
+
+static struct snd_soc_dai_driver voice_dai[] = {
+ {
+ .name = "wmt-voice-dai",
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,},
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,},
+ },
+};
+
+static struct snd_soc_dai_link wmt_dai[] = {
+ {
+ .name = "WM8994",
+ .stream_name = "WM8994 HiFi",
+ .cpu_dai_name = "wmt-i2s.0",
+ .codec_dai_name = "wm8994-aif1",
+ .platform_name = "wmt-audio-pcm.0",
+ .codec_name = "wm8994-codec",
+ .init = wmt_wm8994_init,
+ .ops = &wmt_hifi_ops,
+ },
+ {
+ .name = "WM8994 Voice",
+ .stream_name = "Voice",
+ .cpu_dai_name = "wmt-voice-dai",
+ .codec_dai_name = "wm8994-aif2",
+ .codec_name = "wm8994-codec",
+ .ops = &wmt_voice_ops,
+ },
+};
+
+static struct snd_soc_card wmt = {
+ .name = "WMT_WM8994",
+ .dai_link = wmt_dai,
+ .num_links = ARRAY_SIZE(wmt_dai),
+ .suspend_post = wmt_snd_suspend_post,
+ .resume_pre = wmt_snd_resume_pre,
+};
+
+static int __init wmt_init(void)
+{
+ int ret;
+ char buf[128];
+ int len = ARRAY_SIZE(buf);
+
+ if (wmt_getsyspara("wmt.audio.i2s", buf, &len) != 0)
+ return -EINVAL;
+
+ if (strncmp(buf, "wm8994", strlen("wm8994")))
+ return -ENODEV;
+
+ wmt_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!wmt_snd_device)
+ return -ENOMEM;
+
+ /* register voice DAI here */
+ ret = snd_soc_register_dais(&wmt_snd_device->dev, voice_dai, ARRAY_SIZE(voice_dai));
+ if (ret) {
+ platform_device_put(wmt_snd_device);
+ return ret;
+ }
+
+ platform_set_drvdata(wmt_snd_device, &wmt);
+ ret = platform_device_add(wmt_snd_device);
+
+ if (ret) {
+ snd_soc_unregister_dai(&wmt_snd_device->dev);
+ platform_device_put(wmt_snd_device);
+ }
+
+ return ret;
+}
+
+static void __exit wmt_exit(void)
+{
+ snd_soc_unregister_dai(&wmt_snd_device->dev);
+ platform_device_unregister(wmt_snd_device);
+}
+
+module_init(wmt_init);
+module_exit(wmt_exit);
+
+MODULE_DESCRIPTION("ALSA SoC WM8994 WMT(wm8950)");
+MODULE_AUTHOR("Loonzhong <Loonzhong@wondermedia.com.cn>");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-12-20 08:52:38 +0000