1 files changed, 287 insertions, 0 deletions

diff --git a/sound/soc/samsung/smdk_wm8580.c b/sound/soc/samsung/smdk_wm8580.c
new file mode 100644
index 000000000000..3d26f6607aa4
--- /dev/null
+++ b/sound/soc/samsung/smdk_wm8580.c
@@ -0,0 +1,287 @@
+/*
+ *  smdk_wm8580.c
+ *
+ *  Copyright (c) 2009 Samsung Electronics Co. Ltd
+ *  Author: Jaswinder Singh <jassi.brar@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/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 *cpu_dai = rtd->cpu_dai;
+        struct snd_soc_dai *codec_dai = rtd->codec_dai;
+        unsigned int pll_out;
+        int bfs, rfs, ret;
+
+        switch (params_format(params)) {
+        case SNDRV_PCM_FORMAT_U8:
+        case SNDRV_PCM_FORMAT_S8:
+                bfs = 16;
+                break;
+        case SNDRV_PCM_FORMAT_U16_LE:
+        case SNDRV_PCM_FORMAT_S16_LE:
+                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 the Codec DAI configuration */
+        ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
+                                         | SND_SOC_DAIFMT_NB_NF
+                                         | SND_SOC_DAIFMT_CBM_CFM);
+        if (ret < 0)
+                return ret;
+
+        /* Set the AP DAI configuration */
+        ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
+                                         | SND_SOC_DAIFMT_NB_NF
+                                         | SND_SOC_DAIFMT_CBM_CFM);
+        if (ret < 0)
+                return ret;
+
+        /* 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 wm8580_dapm_widgets_pbk[] = {
+        SND_SOC_DAPM_HP("Front", NULL),
+        SND_SOC_DAPM_HP("Center+Sub", NULL),
+        SND_SOC_DAPM_HP("Rear", NULL),
+};
+
+/* SMDK Capture widgets */
+static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
+        SND_SOC_DAPM_MIC("MicIn", NULL),
+        SND_SOC_DAPM_LINE("LineIn", NULL),
+};
+
+/* SMDK-PAIFTX connections */
+static const struct snd_soc_dapm_route audio_map_tx[] = {
+        /* MicIn feeds AINL */
+        {"AINL", NULL, "MicIn"},
+
+        /* LineIn feeds AINL/R */
+        {"AINL", NULL, "LineIn"},
+        {"AINR", NULL, "LineIn"},
+};
+
+/* SMDK-PAIFRX connections */
+static const struct snd_soc_dapm_route audio_map_rx[] = {
+        /* 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)
+{
+        struct snd_soc_codec *codec = rtd->codec;
+        struct snd_soc_dapm_context *dapm = &codec->dapm;
+
+        /* Add smdk specific Capture widgets */
+        snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
+                                  ARRAY_SIZE(wm8580_dapm_widgets_cpt));
+
+        /* Set up PAIFTX audio path */
+        snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));
+
+        /* Enabling the microphone requires the fitting of a 0R
+         * resistor to connect the line from the microphone jack.
+         */
+        snd_soc_dapm_disable_pin(dapm, "MicIn");
+
+        /* signal a DAPM event */
+        snd_soc_dapm_sync(dapm);
+
+        return 0;
+}
+
+static int smdk_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
+{
+        struct snd_soc_codec *codec = rtd->codec;
+        struct snd_soc_dapm_context *dapm = &codec->dapm;
+
+        /* Add smdk specific Playback widgets */
+        snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
+                                  ARRAY_SIZE(wm8580_dapm_widgets_pbk));
+
+        /* Set up PAIFRX audio path */
+        snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
+
+        /* signal a DAPM event */
+        snd_soc_dapm_sync(dapm);
+
+        return 0;
+}
+
+enum {
+        PRI_PLAYBACK = 0,
+        PRI_CAPTURE,
+        SEC_PLAYBACK,
+};
+
+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-audio",
+                .codec_name = "wm8580-codec.0-001b",
+                .init = smdk_wm8580_init_paifrx,
+                .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-audio",
+                .codec_name = "wm8580-codec.0-001b",
+                .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.x",
+                .codec_dai_name = "wm8580-hifi-playback",
+                .platform_name = "samsung-audio",
+                .codec_name = "wm8580-codec.0-001b",
+                .init = smdk_wm8580_init_paifrx,
+                .ops = &smdk_ops,
+        },
+};
+
+static struct snd_soc_card smdk = {
+        .name = "SMDK-I2S",
+        .dai_link = smdk_dai,
+        .num_links = 2,
+};
+
+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;
+                /* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
+                str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
+                str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
+        } 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, jassi.brar@samsung.com");
+MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
+MODULE_LICENSE("GPL");