--- /dev/null
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
+ * Kristoffer Karlsson <kristoffer.karlsson@stericsson.com>
+ * for ST-Ericsson.
+ *
+ * License terms:
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/mutex.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "ux500_pcm.h"
+#include "ux500_msp_dai.h"
+#include "mop500_ab8500.h"
+#include "../codecs/ab8500-codec.h"
+
+#define TX_SLOT_MONO 0x0008
+#define TX_SLOT_STEREO 0x000a
+#define RX_SLOT_MONO 0x0001
+#define RX_SLOT_STEREO 0x0003
+#define TX_SLOT_8CH 0x00FF
+#define RX_SLOT_8CH 0x00FF
+
+#define DEF_TX_SLOTS TX_SLOT_STEREO
+#define DEF_RX_SLOTS RX_SLOT_MONO
+
+#define DRIVERMODE_NORMAL 0
+#define DRIVERMODE_CODEC_ONLY 1
+
+/* Slot configuration */
+static unsigned int tx_slots = DEF_TX_SLOTS;
+static unsigned int rx_slots = DEF_RX_SLOTS;
+
+/* Configuration consistency parameters */
+static DEFINE_MUTEX(mop500_ab8500_params_lock);
+static unsigned long mop500_ab8500_usage;
+static int mop500_ab8500_rate;
+static int mop500_ab8500_channels;
+
+/* Clocks */
+static const char * const enum_mclk[] = {
+ "SYSCLK",
+ "ULPCLK"
+};
+enum mclk {
+ MCLK_SYSCLK,
+ MCLK_ULPCLK,
+};
+
+static SOC_ENUM_SINGLE_EXT_DECL(soc_enum_mclk, enum_mclk);
+
+/* Private data for machine-part MOP500<->AB8500 */
+struct mop500_ab8500_drvdata {
+ /* Clocks */
+ enum mclk mclk_sel;
+ struct clk *clk_ptr_intclk;
+ struct clk *clk_ptr_sysclk;
+ struct clk *clk_ptr_ulpclk;
+};
+
+static inline const char *get_mclk_str(enum mclk mclk_sel)
+{
+ switch (mclk_sel) {
+ case MCLK_SYSCLK:
+ return "SYSCLK";
+ case MCLK_ULPCLK:
+ return "ULPCLK";
+ default:
+ return "Unknown";
+ }
+}
+
+static int mop500_ab8500_set_mclk(struct device *dev,
+ struct mop500_ab8500_drvdata *drvdata)
+{
+ int status;
+ struct clk *clk_ptr;
+
+ if (IS_ERR(drvdata->clk_ptr_intclk)) {
+ dev_err(dev,
+ "%s: ERROR: intclk not initialized!\n", __func__);
+ return -EIO;
+ }
+
+ switch (drvdata->mclk_sel) {
+ case MCLK_SYSCLK:
+ clk_ptr = drvdata->clk_ptr_sysclk;
+ break;
+ case MCLK_ULPCLK:
+ clk_ptr = drvdata->clk_ptr_ulpclk;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (IS_ERR(clk_ptr)) {
+ dev_err(dev, "%s: ERROR: %s not initialized!\n", __func__,
+ get_mclk_str(drvdata->mclk_sel));
+ return -EIO;
+ }
+
+ status = clk_set_parent(drvdata->clk_ptr_intclk, clk_ptr);
+ if (status)
+ dev_err(dev,
+ "%s: ERROR: Setting intclk parent to %s failed (ret = %d)!",
+ __func__, get_mclk_str(drvdata->mclk_sel), status);
+ else
+ dev_dbg(dev,
+ "%s: intclk parent changed to %s.\n",
+ __func__, get_mclk_str(drvdata->mclk_sel));
+
+ return status;
+}
+
+/*
+ * Control-events
+ */
+
+static int mclk_input_control_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
+ struct mop500_ab8500_drvdata *drvdata =
+ snd_soc_card_get_drvdata(card);
+
+ ucontrol->value.enumerated.item[0] = drvdata->mclk_sel;
+
+ return 0;
+}
+
+static int mclk_input_control_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
+ struct mop500_ab8500_drvdata *drvdata =
+ snd_soc_card_get_drvdata(card);
+ unsigned int val = ucontrol->value.enumerated.item[0];
+
+ if (val > (unsigned int)MCLK_ULPCLK)
+ return -EINVAL;
+ if (drvdata->mclk_sel == val)
+ return 0;
+
+ drvdata->mclk_sel = val;
+
+ return 1;
+}
+
+/*
+ * Controls
+ */
+
+static struct snd_kcontrol_new mop500_ab8500_ctrls[] = {
+ SOC_ENUM_EXT("Master Clock Select",
+ soc_enum_mclk,
+ mclk_input_control_get, mclk_input_control_put),
+ SOC_DAPM_PIN_SWITCH("Headset Left"),
+ SOC_DAPM_PIN_SWITCH("Headset Right"),
+ SOC_DAPM_PIN_SWITCH("Earpiece"),
+ SOC_DAPM_PIN_SWITCH("Speaker Left"),
+ SOC_DAPM_PIN_SWITCH("Speaker Right"),
+ SOC_DAPM_PIN_SWITCH("LineOut Left"),
+ SOC_DAPM_PIN_SWITCH("LineOut Right"),
+ SOC_DAPM_PIN_SWITCH("Vibra 1"),
+ SOC_DAPM_PIN_SWITCH("Vibra 2"),
+ SOC_DAPM_PIN_SWITCH("Mic 1"),
+ SOC_DAPM_PIN_SWITCH("Mic 2"),
+ SOC_DAPM_PIN_SWITCH("LineIn Left"),
+ SOC_DAPM_PIN_SWITCH("LineIn Right"),
+ SOC_DAPM_PIN_SWITCH("DMic 1"),
+ SOC_DAPM_PIN_SWITCH("DMic 2"),
+ SOC_DAPM_PIN_SWITCH("DMic 3"),
+ SOC_DAPM_PIN_SWITCH("DMic 4"),
+ SOC_DAPM_PIN_SWITCH("DMic 5"),
+ SOC_DAPM_PIN_SWITCH("DMic 6"),
+};
+
+/* ASoC */
+
+static int mop500_ab8500_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+
+ /* Set audio-clock source */
+ return mop500_ab8500_set_mclk(rtd->card->dev,
+ snd_soc_card_get_drvdata(rtd->card));
+}
+
+static void mop500_ab8500_shutdown(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct device *dev = rtd->card->dev;
+
+ dev_dbg(dev, "%s: Enter\n", __func__);
+
+ /* Reset slots configuration to default(s) */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ tx_slots = DEF_TX_SLOTS;
+ else
+ rx_slots = DEF_RX_SLOTS;
+}
+
+static int mop500_ab8500_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;
+ struct device *dev = rtd->card->dev;
+ unsigned int fmt;
+ int channels, ret = 0, driver_mode, slots;
+ unsigned int sw_codec, sw_cpu;
+ bool is_playback;
+
+ dev_dbg(dev, "%s: Enter\n", __func__);
+
+ dev_dbg(dev, "%s: substream->pcm->name = %s\n"
+ "substream->pcm->id = %s.\n"
+ "substream->name = %s.\n"
+ "substream->number = %d.\n",
+ __func__,
+ substream->pcm->name,
+ substream->pcm->id,
+ substream->name,
+ substream->number);
+
+ /* Ensure configuration consistency between DAIs */
+ mutex_lock(&mop500_ab8500_params_lock);
+ if (mop500_ab8500_usage) {
+ if (mop500_ab8500_rate != params_rate(params) ||
+ mop500_ab8500_channels != params_channels(params)) {
+ mutex_unlock(&mop500_ab8500_params_lock);
+ return -EBUSY;
+ }
+ } else {
+ mop500_ab8500_rate = params_rate(params);
+ mop500_ab8500_channels = params_channels(params);
+ }
+ __set_bit(cpu_dai->id, &mop500_ab8500_usage);
+ mutex_unlock(&mop500_ab8500_params_lock);
+
+ channels = params_channels(params);
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S32_LE:
+ sw_cpu = 32;
+ break;
+
+ case SNDRV_PCM_FORMAT_S16_LE:
+ sw_cpu = 16;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Setup codec depending on driver-mode */
+ if (channels == 8)
+ driver_mode = DRIVERMODE_CODEC_ONLY;
+ else
+ driver_mode = DRIVERMODE_NORMAL;
+ dev_dbg(dev, "%s: Driver-mode: %s.\n", __func__,
+ (driver_mode == DRIVERMODE_NORMAL) ? "NORMAL" : "CODEC_ONLY");
+
+ /* Setup format */
+
+ if (driver_mode == DRIVERMODE_NORMAL) {
+ fmt = SND_SOC_DAIFMT_DSP_A |
+ SND_SOC_DAIFMT_CBM_CFM |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CONT;
+ } else {
+ fmt = SND_SOC_DAIFMT_DSP_A |
+ SND_SOC_DAIFMT_CBM_CFM |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_GATED;
+ }
+
+ ret = snd_soc_runtime_set_dai_fmt(rtd, fmt);
+ if (ret)
+ return ret;
+
+ /* Setup TDM-slots */
+
+ is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
+ switch (channels) {
+ case 1:
+ slots = 16;
+ tx_slots = (is_playback) ? TX_SLOT_MONO : 0;
+ rx_slots = (is_playback) ? 0 : RX_SLOT_MONO;
+ break;
+ case 2:
+ slots = 16;
+ tx_slots = (is_playback) ? TX_SLOT_STEREO : 0;
+ rx_slots = (is_playback) ? 0 : RX_SLOT_STEREO;
+ break;
+ case 8:
+ slots = 16;
+ tx_slots = (is_playback) ? TX_SLOT_8CH : 0;
+ rx_slots = (is_playback) ? 0 : RX_SLOT_8CH;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (driver_mode == DRIVERMODE_NORMAL)
+ sw_codec = sw_cpu;
+ else
+ sw_codec = 20;
+
+ dev_dbg(dev, "%s: CPU-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
+ tx_slots, rx_slots);
+ ret = snd_soc_dai_set_tdm_slot(cpu_dai, tx_slots, rx_slots, slots,
+ sw_cpu);
+ if (ret)
+ return ret;
+
+ dev_dbg(dev, "%s: CODEC-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
+ tx_slots, rx_slots);
+ ret = snd_soc_dai_set_tdm_slot(codec_dai, tx_slots, rx_slots, slots,
+ sw_codec);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mop500_ab8500_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ mutex_lock(&mop500_ab8500_params_lock);
+ __clear_bit(cpu_dai->id, &mop500_ab8500_usage);
+ mutex_unlock(&mop500_ab8500_params_lock);
+
+ return 0;
+}
+
+struct snd_soc_ops mop500_ab8500_ops[] = {
+ {
+ .hw_params = mop500_ab8500_hw_params,
+ .hw_free = mop500_ab8500_hw_free,
+ .startup = mop500_ab8500_startup,
+ .shutdown = mop500_ab8500_shutdown,
+ }
+};
+
+int mop500_ab8500_machine_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
+ struct device *dev = rtd->card->dev;
+ struct mop500_ab8500_drvdata *drvdata;
+ int ret;
+
+ dev_dbg(dev, "%s Enter.\n", __func__);
+
+ /* Create driver private-data struct */
+ drvdata = devm_kzalloc(dev, sizeof(struct mop500_ab8500_drvdata),
+ GFP_KERNEL);
+ snd_soc_card_set_drvdata(rtd->card, drvdata);
+
+ /* Setup clocks */
+
+ drvdata->clk_ptr_sysclk = clk_get(dev, "sysclk");
+ if (IS_ERR(drvdata->clk_ptr_sysclk))
+ dev_warn(dev, "%s: WARNING: clk_get failed for 'sysclk'!\n",
+ __func__);
+ drvdata->clk_ptr_ulpclk = clk_get(dev, "ulpclk");
+ if (IS_ERR(drvdata->clk_ptr_ulpclk))
+ dev_warn(dev, "%s: WARNING: clk_get failed for 'ulpclk'!\n",
+ __func__);
+ drvdata->clk_ptr_intclk = clk_get(dev, "intclk");
+ if (IS_ERR(drvdata->clk_ptr_intclk))
+ dev_warn(dev, "%s: WARNING: clk_get failed for 'intclk'!\n",
+ __func__);
+
+ /* Set intclk default parent to ulpclk */
+ drvdata->mclk_sel = MCLK_ULPCLK;
+ ret = mop500_ab8500_set_mclk(dev, drvdata);
+ if (ret < 0)
+ dev_warn(dev, "%s: WARNING: mop500_ab8500_set_mclk!\n",
+ __func__);
+
+ drvdata->mclk_sel = MCLK_ULPCLK;
+
+ /* Add controls */
+ ret = snd_soc_add_card_controls(rtd->card, mop500_ab8500_ctrls,
+ ARRAY_SIZE(mop500_ab8500_ctrls));
+ if (ret < 0) {
+ pr_err("%s: Failed to add machine-controls (%d)!\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = snd_soc_dapm_disable_pin(dapm, "Earpiece");
+ ret |= snd_soc_dapm_disable_pin(dapm, "Speaker Left");
+ ret |= snd_soc_dapm_disable_pin(dapm, "Speaker Right");
+ ret |= snd_soc_dapm_disable_pin(dapm, "LineOut Left");
+ ret |= snd_soc_dapm_disable_pin(dapm, "LineOut Right");
+ ret |= snd_soc_dapm_disable_pin(dapm, "Vibra 1");
+ ret |= snd_soc_dapm_disable_pin(dapm, "Vibra 2");
+ ret |= snd_soc_dapm_disable_pin(dapm, "Mic 1");
+ ret |= snd_soc_dapm_disable_pin(dapm, "Mic 2");
+ ret |= snd_soc_dapm_disable_pin(dapm, "LineIn Left");
+ ret |= snd_soc_dapm_disable_pin(dapm, "LineIn Right");
+ ret |= snd_soc_dapm_disable_pin(dapm, "DMic 1");
+ ret |= snd_soc_dapm_disable_pin(dapm, "DMic 2");
+ ret |= snd_soc_dapm_disable_pin(dapm, "DMic 3");
+ ret |= snd_soc_dapm_disable_pin(dapm, "DMic 4");
+ ret |= snd_soc_dapm_disable_pin(dapm, "DMic 5");
+ ret |= snd_soc_dapm_disable_pin(dapm, "DMic 6");
+
+ return ret;
+}
+
+void mop500_ab8500_remove(struct snd_soc_card *card)
+{
+ struct mop500_ab8500_drvdata *drvdata = snd_soc_card_get_drvdata(card);
+
+ if (drvdata->clk_ptr_sysclk != NULL)
+ clk_put(drvdata->clk_ptr_sysclk);
+ if (drvdata->clk_ptr_ulpclk != NULL)
+ clk_put(drvdata->clk_ptr_ulpclk);
+ if (drvdata->clk_ptr_intclk != NULL)
+ clk_put(drvdata->clk_ptr_intclk);
+
+ snd_soc_card_set_drvdata(card, drvdata);
+}
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