--- /dev/null
+/*
+ * smdk_wm8580.c
+ *
+ * Copyright (c) 2009 Samsung Electronics Co. Ltd
+ * Author: Jaswinder Singh <jassisinghbrar@gmail.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 <linux/module.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/wm8580.h"
+#include "i2s.h"
+
+/*
+ * Default CFG switch settings to use this driver:
+ *
+ * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
+ */
+
+/* SMDK has a 12MHZ crystal attached to WM8580 */
+#define SMDK_WM8580_FREQ 12000000
+
+static int smdk_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;
+ unsigned int pll_out;
+ int bfs, rfs, ret;
+
+ switch (params_width(params)) {
+ case 8:
+ bfs = 16;
+ break;
+ case 16:
+ bfs = 32;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
+ * This criterion can't be met if we request PLL output
+ * as {8000x256, 64000x256, 11025x256}Hz.
+ * As a wayout, we rather change rfs to a minimum value that
+ * results in (params_rate(params) * rfs), and itself, acceptable
+ * to both - the CODEC and the CPU.
+ */
+ switch (params_rate(params)) {
+ case 16000:
+ case 22050:
+ case 32000:
+ case 44100:
+ case 48000:
+ case 88200:
+ case 96000:
+ rfs = 256;
+ break;
+ case 64000:
+ rfs = 384;
+ break;
+ case 8000:
+ case 11025:
+ rfs = 512;
+ break;
+ default:
+ return -EINVAL;
+ }
+ pll_out = params_rate(params) * rfs;
+
+ /* Set WM8580 to drive MCLK from its PLLA */
+ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
+ WM8580_CLKSRC_PLLA);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
+ SMDK_WM8580_FREQ, pll_out);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
+ pll_out, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * SMDK WM8580 DAI operations.
+ */
+static struct snd_soc_ops smdk_ops = {
+ .hw_params = smdk_hw_params,
+};
+
+/* SMDK Playback widgets */
+static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Front", NULL),
+ SND_SOC_DAPM_HP("Center+Sub", NULL),
+ SND_SOC_DAPM_HP("Rear", NULL),
+
+ SND_SOC_DAPM_MIC("MicIn", NULL),
+ SND_SOC_DAPM_LINE("LineIn", NULL),
+};
+
+/* SMDK-PAIFTX connections */
+static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
+ /* MicIn feeds AINL */
+ {"AINL", NULL, "MicIn"},
+
+ /* LineIn feeds AINL/R */
+ {"AINL", NULL, "LineIn"},
+ {"AINR", NULL, "LineIn"},
+
+ /* Front Left/Right are fed VOUT1L/R */
+ {"Front", NULL, "VOUT1L"},
+ {"Front", NULL, "VOUT1R"},
+
+ /* Center/Sub are fed VOUT2L/R */
+ {"Center+Sub", NULL, "VOUT2L"},
+ {"Center+Sub", NULL, "VOUT2R"},
+
+ /* Rear Left/Right are fed VOUT3L/R */
+ {"Rear", NULL, "VOUT3L"},
+ {"Rear", NULL, "VOUT3R"},
+};
+
+static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
+{
+ /* Enabling the microphone requires the fitting of a 0R
+ * resistor to connect the line from the microphone jack.
+ */
+ snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn");
+
+ return 0;
+}
+
+enum {
+ PRI_PLAYBACK = 0,
+ PRI_CAPTURE,
+ SEC_PLAYBACK,
+};
+
+#define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
+ SND_SOC_DAIFMT_CBM_CFM)
+
+static struct snd_soc_dai_link smdk_dai[] = {
+ [PRI_PLAYBACK] = { /* Primary Playback i/f */
+ .name = "WM8580 PAIF RX",
+ .stream_name = "Playback",
+ .cpu_dai_name = "samsung-i2s.0",
+ .codec_dai_name = "wm8580-hifi-playback",
+ .platform_name = "samsung-i2s.0",
+ .codec_name = "wm8580.0-001b",
+ .dai_fmt = SMDK_DAI_FMT,
+ .ops = &smdk_ops,
+ },
+ [PRI_CAPTURE] = { /* Primary Capture i/f */
+ .name = "WM8580 PAIF TX",
+ .stream_name = "Capture",
+ .cpu_dai_name = "samsung-i2s.0",
+ .codec_dai_name = "wm8580-hifi-capture",
+ .platform_name = "samsung-i2s.0",
+ .codec_name = "wm8580.0-001b",
+ .dai_fmt = SMDK_DAI_FMT,
+ .init = smdk_wm8580_init_paiftx,
+ .ops = &smdk_ops,
+ },
+ [SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
+ .name = "Sec_FIFO TX",
+ .stream_name = "Playback",
+ .cpu_dai_name = "samsung-i2s-sec",
+ .codec_dai_name = "wm8580-hifi-playback",
+ .platform_name = "samsung-i2s-sec",
+ .codec_name = "wm8580.0-001b",
+ .dai_fmt = SMDK_DAI_FMT,
+ .ops = &smdk_ops,
+ },
+};
+
+static struct snd_soc_card smdk = {
+ .name = "SMDK-I2S",
+ .owner = THIS_MODULE,
+ .dai_link = smdk_dai,
+ .num_links = 2,
+
+ .dapm_widgets = smdk_wm8580_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
+ .dapm_routes = smdk_wm8580_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
+};
+
+static struct platform_device *smdk_snd_device;
+
+static int __init smdk_audio_init(void)
+{
+ int ret;
+ char *str;
+
+ if (machine_is_smdkc100()
+ || machine_is_smdkv210() || machine_is_smdkc110()) {
+ smdk.num_links = 3;
+ } else if (machine_is_smdk6410()) {
+ str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
+ str[strlen(str) - 1] = '2';
+ str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
+ str[strlen(str) - 1] = '2';
+ }
+
+ smdk_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!smdk_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(smdk_snd_device, &smdk);
+ ret = platform_device_add(smdk_snd_device);
+
+ if (ret)
+ platform_device_put(smdk_snd_device);
+
+ return ret;
+}
+module_init(smdk_audio_init);
+
+static void __exit smdk_audio_exit(void)
+{
+ platform_device_unregister(smdk_snd_device);
+}
+module_exit(smdk_audio_exit);
+
+MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com");
+MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff