--- /dev/null
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
+ * Roger Nilsson <roger.xr.nilsson@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/slab.h>
+#include <linux/bitops.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+#include <linux/mfd/dbx500-prcmu.h>
+#include <linux/platform_data/asoc-ux500-msp.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <sound/dmaengine_pcm.h>
+
+#include "ux500_msp_i2s.h"
+#include "ux500_msp_dai.h"
+#include "ux500_pcm.h"
+
+static int setup_pcm_multichan(struct snd_soc_dai *dai,
+ struct ux500_msp_config *msp_config)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+ struct msp_multichannel_config *multi =
+ &msp_config->multichannel_config;
+
+ if (drvdata->slots > 1) {
+ msp_config->multichannel_configured = 1;
+
+ multi->tx_multichannel_enable = true;
+ multi->rx_multichannel_enable = true;
+ multi->rx_comparison_enable_mode = MSP_COMPARISON_DISABLED;
+
+ multi->tx_channel_0_enable = drvdata->tx_mask;
+ multi->tx_channel_1_enable = 0;
+ multi->tx_channel_2_enable = 0;
+ multi->tx_channel_3_enable = 0;
+
+ multi->rx_channel_0_enable = drvdata->rx_mask;
+ multi->rx_channel_1_enable = 0;
+ multi->rx_channel_2_enable = 0;
+ multi->rx_channel_3_enable = 0;
+
+ dev_dbg(dai->dev,
+ "%s: Multichannel enabled. Slots: %d, TX: %u, RX: %u\n",
+ __func__, drvdata->slots, multi->tx_channel_0_enable,
+ multi->rx_channel_0_enable);
+ }
+
+ return 0;
+}
+
+static int setup_frameper(struct snd_soc_dai *dai, unsigned int rate,
+ struct msp_protdesc *prot_desc)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ switch (drvdata->slots) {
+ case 1:
+ switch (rate) {
+ case 8000:
+ prot_desc->frame_period =
+ FRAME_PER_SINGLE_SLOT_8_KHZ;
+ break;
+
+ case 16000:
+ prot_desc->frame_period =
+ FRAME_PER_SINGLE_SLOT_16_KHZ;
+ break;
+
+ case 44100:
+ prot_desc->frame_period =
+ FRAME_PER_SINGLE_SLOT_44_1_KHZ;
+ break;
+
+ case 48000:
+ prot_desc->frame_period =
+ FRAME_PER_SINGLE_SLOT_48_KHZ;
+ break;
+
+ default:
+ dev_err(dai->dev,
+ "%s: Error: Unsupported sample-rate (freq = %d)!\n",
+ __func__, rate);
+ return -EINVAL;
+ }
+ break;
+
+ case 2:
+ prot_desc->frame_period = FRAME_PER_2_SLOTS;
+ break;
+
+ case 8:
+ prot_desc->frame_period = FRAME_PER_8_SLOTS;
+ break;
+
+ case 16:
+ prot_desc->frame_period = FRAME_PER_16_SLOTS;
+ break;
+ default:
+ dev_err(dai->dev,
+ "%s: Error: Unsupported slot-count (slots = %d)!\n",
+ __func__, drvdata->slots);
+ return -EINVAL;
+ }
+
+ prot_desc->clocks_per_frame =
+ prot_desc->frame_period+1;
+
+ dev_dbg(dai->dev, "%s: Clocks per frame: %u\n",
+ __func__,
+ prot_desc->clocks_per_frame);
+
+ return 0;
+}
+
+static int setup_pcm_framing(struct snd_soc_dai *dai, unsigned int rate,
+ struct msp_protdesc *prot_desc)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ u32 frame_length = MSP_FRAME_LEN_1;
+ prot_desc->frame_width = 0;
+
+ switch (drvdata->slots) {
+ case 1:
+ frame_length = MSP_FRAME_LEN_1;
+ break;
+
+ case 2:
+ frame_length = MSP_FRAME_LEN_2;
+ break;
+
+ case 8:
+ frame_length = MSP_FRAME_LEN_8;
+ break;
+
+ case 16:
+ frame_length = MSP_FRAME_LEN_16;
+ break;
+ default:
+ dev_err(dai->dev,
+ "%s: Error: Unsupported slot-count (slots = %d)!\n",
+ __func__, drvdata->slots);
+ return -EINVAL;
+ }
+
+ prot_desc->tx_frame_len_1 = frame_length;
+ prot_desc->rx_frame_len_1 = frame_length;
+ prot_desc->tx_frame_len_2 = frame_length;
+ prot_desc->rx_frame_len_2 = frame_length;
+
+ prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
+ prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
+ prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
+ prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
+
+ return setup_frameper(dai, rate, prot_desc);
+}
+
+static int setup_clocking(struct snd_soc_dai *dai,
+ unsigned int fmt,
+ struct ux500_msp_config *msp_config)
+{
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+
+ case SND_SOC_DAIFMT_NB_IF:
+ msp_config->tx_fsync_pol ^= 1 << TFSPOL_SHIFT;
+ msp_config->rx_fsync_pol ^= 1 << RFSPOL_SHIFT;
+
+ break;
+
+ default:
+ dev_err(dai->dev,
+ "%s: Error: Unsopported inversion (fmt = 0x%x)!\n",
+ __func__, fmt);
+
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ dev_dbg(dai->dev, "%s: Codec is master.\n", __func__);
+
+ msp_config->iodelay = 0x20;
+ msp_config->rx_fsync_sel = 0;
+ msp_config->tx_fsync_sel = 1 << TFSSEL_SHIFT;
+ msp_config->tx_clk_sel = 0;
+ msp_config->rx_clk_sel = 0;
+ msp_config->srg_clk_sel = 0x2 << SCKSEL_SHIFT;
+
+ break;
+
+ case SND_SOC_DAIFMT_CBS_CFS:
+ dev_dbg(dai->dev, "%s: Codec is slave.\n", __func__);
+
+ msp_config->tx_clk_sel = TX_CLK_SEL_SRG;
+ msp_config->tx_fsync_sel = TX_SYNC_SRG_PROG;
+ msp_config->rx_clk_sel = RX_CLK_SEL_SRG;
+ msp_config->rx_fsync_sel = RX_SYNC_SRG;
+ msp_config->srg_clk_sel = 1 << SCKSEL_SHIFT;
+
+ break;
+
+ default:
+ dev_err(dai->dev, "%s: Error: Unsopported master (fmt = 0x%x)!\n",
+ __func__, fmt);
+
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int setup_pcm_protdesc(struct snd_soc_dai *dai,
+ unsigned int fmt,
+ struct msp_protdesc *prot_desc)
+{
+ prot_desc->rx_phase_mode = MSP_SINGLE_PHASE;
+ prot_desc->tx_phase_mode = MSP_SINGLE_PHASE;
+ prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
+ prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
+ prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
+ prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
+ prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_HI);
+ prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_HI << RFSPOL_SHIFT;
+
+ if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_A) {
+ dev_dbg(dai->dev, "%s: DSP_A.\n", __func__);
+ prot_desc->rx_clk_pol = MSP_RISING_EDGE;
+ prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
+
+ prot_desc->rx_data_delay = MSP_DELAY_1;
+ prot_desc->tx_data_delay = MSP_DELAY_1;
+ } else {
+ dev_dbg(dai->dev, "%s: DSP_B.\n", __func__);
+ prot_desc->rx_clk_pol = MSP_FALLING_EDGE;
+ prot_desc->tx_clk_pol = MSP_RISING_EDGE;
+
+ prot_desc->rx_data_delay = MSP_DELAY_0;
+ prot_desc->tx_data_delay = MSP_DELAY_0;
+ }
+
+ prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
+ prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
+ prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
+ prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
+ prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
+
+ return 0;
+}
+
+static int setup_i2s_protdesc(struct msp_protdesc *prot_desc)
+{
+ prot_desc->rx_phase_mode = MSP_DUAL_PHASE;
+ prot_desc->tx_phase_mode = MSP_DUAL_PHASE;
+ prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
+ prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
+ prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
+ prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
+ prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_LO);
+ prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_LO << RFSPOL_SHIFT;
+
+ prot_desc->rx_frame_len_1 = MSP_FRAME_LEN_1;
+ prot_desc->rx_frame_len_2 = MSP_FRAME_LEN_1;
+ prot_desc->tx_frame_len_1 = MSP_FRAME_LEN_1;
+ prot_desc->tx_frame_len_2 = MSP_FRAME_LEN_1;
+ prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
+ prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
+ prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
+ prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
+
+ prot_desc->rx_clk_pol = MSP_RISING_EDGE;
+ prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
+
+ prot_desc->rx_data_delay = MSP_DELAY_0;
+ prot_desc->tx_data_delay = MSP_DELAY_0;
+
+ prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
+ prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
+ prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
+ prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
+ prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
+
+ return 0;
+}
+
+static int setup_msp_config(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai,
+ struct ux500_msp_config *msp_config)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+ struct msp_protdesc *prot_desc = &msp_config->protdesc;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ unsigned int fmt = drvdata->fmt;
+ int ret;
+
+ memset(msp_config, 0, sizeof(*msp_config));
+
+ msp_config->f_inputclk = drvdata->master_clk;
+
+ msp_config->tx_fifo_config = TX_FIFO_ENABLE;
+ msp_config->rx_fifo_config = RX_FIFO_ENABLE;
+ msp_config->def_elem_len = 1;
+ msp_config->direction = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
+ MSP_DIR_TX : MSP_DIR_RX;
+ msp_config->data_size = MSP_DATA_BITS_32;
+ msp_config->frame_freq = runtime->rate;
+
+ dev_dbg(dai->dev, "%s: f_inputclk = %u, frame_freq = %u.\n",
+ __func__, msp_config->f_inputclk, msp_config->frame_freq);
+ /* To avoid division by zero */
+ prot_desc->clocks_per_frame = 1;
+
+ dev_dbg(dai->dev, "%s: rate: %u, channels: %d.\n", __func__,
+ runtime->rate, runtime->channels);
+ switch (fmt &
+ (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_MASTER_MASK)) {
+ case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
+ dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
+
+ msp_config->default_protdesc = 1;
+ msp_config->protocol = MSP_I2S_PROTOCOL;
+ break;
+
+ case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
+ dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
+
+ msp_config->data_size = MSP_DATA_BITS_16;
+ msp_config->protocol = MSP_I2S_PROTOCOL;
+
+ ret = setup_i2s_protdesc(prot_desc);
+ if (ret < 0)
+ return ret;
+
+ break;
+
+ case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
+ case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
+ case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
+ case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
+ dev_dbg(dai->dev, "%s: PCM format.\n", __func__);
+
+ msp_config->data_size = MSP_DATA_BITS_16;
+ msp_config->protocol = MSP_PCM_PROTOCOL;
+
+ ret = setup_pcm_protdesc(dai, fmt, prot_desc);
+ if (ret < 0)
+ return ret;
+
+ ret = setup_pcm_multichan(dai, msp_config);
+ if (ret < 0)
+ return ret;
+
+ ret = setup_pcm_framing(dai, runtime->rate, prot_desc);
+ if (ret < 0)
+ return ret;
+
+ break;
+
+ default:
+ dev_err(dai->dev, "%s: Error: Unsopported format (%d)!\n",
+ __func__, fmt);
+ return -EINVAL;
+ }
+
+ return setup_clocking(dai, fmt, msp_config);
+}
+
+static int ux500_msp_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ int ret = 0;
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
+ snd_pcm_stream_str(substream));
+
+ /* Enable regulator */
+ ret = regulator_enable(drvdata->reg_vape);
+ if (ret != 0) {
+ dev_err(drvdata->msp->dev,
+ "%s: Failed to enable regulator!\n", __func__);
+ return ret;
+ }
+
+ /* Prepare and enable clocks */
+ dev_dbg(dai->dev, "%s: Enabling MSP-clocks.\n", __func__);
+ ret = clk_prepare_enable(drvdata->pclk);
+ if (ret) {
+ dev_err(drvdata->msp->dev,
+ "%s: Failed to prepare/enable pclk!\n", __func__);
+ goto err_pclk;
+ }
+
+ ret = clk_prepare_enable(drvdata->clk);
+ if (ret) {
+ dev_err(drvdata->msp->dev,
+ "%s: Failed to prepare/enable clk!\n", __func__);
+ goto err_clk;
+ }
+
+ return ret;
+err_clk:
+ clk_disable_unprepare(drvdata->pclk);
+err_pclk:
+ regulator_disable(drvdata->reg_vape);
+ return ret;
+}
+
+static void ux500_msp_dai_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ int ret;
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+ bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
+
+ dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
+ snd_pcm_stream_str(substream));
+
+ if (drvdata->vape_opp_constraint == 1) {
+ prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
+ "ux500_msp_i2s", 50);
+ drvdata->vape_opp_constraint = 0;
+ }
+
+ if (ux500_msp_i2s_close(drvdata->msp,
+ is_playback ? MSP_DIR_TX : MSP_DIR_RX)) {
+ dev_err(dai->dev,
+ "%s: Error: MSP %d (%s): Unable to close i2s.\n",
+ __func__, dai->id, snd_pcm_stream_str(substream));
+ }
+
+ /* Disable and unprepare clocks */
+ clk_disable_unprepare(drvdata->clk);
+ clk_disable_unprepare(drvdata->pclk);
+
+ /* Disable regulator */
+ ret = regulator_disable(drvdata->reg_vape);
+ if (ret < 0)
+ dev_err(dai->dev,
+ "%s: ERROR: Failed to disable regulator (%d)!\n",
+ __func__, ret);
+}
+
+static int ux500_msp_dai_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ int ret = 0;
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct ux500_msp_config msp_config;
+
+ dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (rate = %d).\n", __func__,
+ dai->id, snd_pcm_stream_str(substream), runtime->rate);
+
+ setup_msp_config(substream, dai, &msp_config);
+
+ ret = ux500_msp_i2s_open(drvdata->msp, &msp_config);
+ if (ret < 0) {
+ dev_err(dai->dev, "%s: Error: msp_setup failed (ret = %d)!\n",
+ __func__, ret);
+ return ret;
+ }
+
+ /* Set OPP-level */
+ if ((drvdata->fmt & SND_SOC_DAIFMT_MASTER_MASK) &&
+ (drvdata->msp->f_bitclk > 19200000)) {
+ /* If the bit-clock is higher than 19.2MHz, Vape should be
+ * run in 100% OPP. Only when bit-clock is used (MSP master) */
+ prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
+ "ux500-msp-i2s", 100);
+ drvdata->vape_opp_constraint = 1;
+ } else {
+ prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
+ "ux500-msp-i2s", 50);
+ drvdata->vape_opp_constraint = 0;
+ }
+
+ return ret;
+}
+
+static int ux500_msp_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ unsigned int mask, slots_active;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n",
+ __func__, dai->id, snd_pcm_stream_str(substream));
+
+ switch (drvdata->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ snd_pcm_hw_constraint_minmax(runtime,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+ 1, 2);
+ break;
+
+ case SND_SOC_DAIFMT_DSP_B:
+ case SND_SOC_DAIFMT_DSP_A:
+ mask = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
+ drvdata->tx_mask :
+ drvdata->rx_mask;
+
+ slots_active = hweight32(mask);
+ dev_dbg(dai->dev, "TDM-slots active: %d", slots_active);
+
+ snd_pcm_hw_constraint_minmax(runtime,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+ slots_active, slots_active);
+ break;
+
+ default:
+ dev_err(dai->dev,
+ "%s: Error: Unsupported protocol (fmt = 0x%x)!\n",
+ __func__, drvdata->fmt);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ux500_msp_dai_set_dai_fmt(struct snd_soc_dai *dai,
+ unsigned int fmt)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ dev_dbg(dai->dev, "%s: MSP %d: Enter.\n", __func__, dai->id);
+
+ switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
+ SND_SOC_DAIFMT_MASTER_MASK)) {
+ case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
+ case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
+ case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
+ case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
+ case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
+ case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
+ break;
+
+ default:
+ dev_err(dai->dev,
+ "%s: Error: Unsupported protocol/master (fmt = 0x%x)!\n",
+ __func__, drvdata->fmt);
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ case SND_SOC_DAIFMT_NB_IF:
+ case SND_SOC_DAIFMT_IB_IF:
+ break;
+
+ default:
+ dev_err(dai->dev,
+ "%s: Error: Unsupported inversion (fmt = 0x%x)!\n",
+ __func__, drvdata->fmt);
+ return -EINVAL;
+ }
+
+ drvdata->fmt = fmt;
+ return 0;
+}
+
+static int ux500_msp_dai_set_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask,
+ unsigned int rx_mask,
+ int slots, int slot_width)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+ unsigned int cap;
+
+ switch (slots) {
+ case 1:
+ cap = 0x01;
+ break;
+ case 2:
+ cap = 0x03;
+ break;
+ case 8:
+ cap = 0xFF;
+ break;
+ case 16:
+ cap = 0xFFFF;
+ break;
+ default:
+ dev_err(dai->dev, "%s: Error: Unsupported slot-count (%d)!\n",
+ __func__, slots);
+ return -EINVAL;
+ }
+ drvdata->slots = slots;
+
+ if (!(slot_width == 16)) {
+ dev_err(dai->dev, "%s: Error: Unsupported slot-width (%d)!\n",
+ __func__, slot_width);
+ return -EINVAL;
+ }
+ drvdata->slot_width = slot_width;
+
+ drvdata->tx_mask = tx_mask & cap;
+ drvdata->rx_mask = rx_mask & cap;
+
+ return 0;
+}
+
+static int ux500_msp_dai_set_dai_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ dev_dbg(dai->dev, "%s: MSP %d: Enter. clk-id: %d, freq: %u.\n",
+ __func__, dai->id, clk_id, freq);
+
+ switch (clk_id) {
+ case UX500_MSP_MASTER_CLOCK:
+ drvdata->master_clk = freq;
+ break;
+
+ default:
+ dev_err(dai->dev, "%s: MSP %d: Invalid clk-id (%d)!\n",
+ __func__, dai->id, clk_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ux500_msp_dai_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ int ret = 0;
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (msp->id = %d, cmd = %d).\n",
+ __func__, dai->id, snd_pcm_stream_str(substream),
+ (int)drvdata->msp->id, cmd);
+
+ ret = ux500_msp_i2s_trigger(drvdata->msp, cmd, substream->stream);
+
+ return ret;
+}
+
+static int ux500_msp_dai_of_probe(struct snd_soc_dai *dai)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+ struct snd_dmaengine_dai_dma_data *playback_dma_data;
+ struct snd_dmaengine_dai_dma_data *capture_dma_data;
+
+ playback_dma_data = devm_kzalloc(dai->dev,
+ sizeof(*playback_dma_data),
+ GFP_KERNEL);
+ if (!playback_dma_data)
+ return -ENOMEM;
+
+ capture_dma_data = devm_kzalloc(dai->dev,
+ sizeof(*capture_dma_data),
+ GFP_KERNEL);
+ if (!capture_dma_data)
+ return -ENOMEM;
+
+ playback_dma_data->addr = drvdata->msp->playback_dma_data.tx_rx_addr;
+ capture_dma_data->addr = drvdata->msp->capture_dma_data.tx_rx_addr;
+
+ playback_dma_data->maxburst = 4;
+ capture_dma_data->maxburst = 4;
+
+ snd_soc_dai_init_dma_data(dai, playback_dma_data, capture_dma_data);
+
+ return 0;
+}
+
+static int ux500_msp_dai_probe(struct snd_soc_dai *dai)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+ struct msp_i2s_platform_data *pdata = dai->dev->platform_data;
+ int ret;
+
+ if (!pdata) {
+ ret = ux500_msp_dai_of_probe(dai);
+ return ret;
+ }
+
+ drvdata->msp->playback_dma_data.data_size = drvdata->slot_width;
+ drvdata->msp->capture_dma_data.data_size = drvdata->slot_width;
+
+ snd_soc_dai_init_dma_data(dai,
+ &drvdata->msp->playback_dma_data,
+ &drvdata->msp->capture_dma_data);
+ return 0;
+}
+
+static struct snd_soc_dai_ops ux500_msp_dai_ops[] = {
+ {
+ .set_sysclk = ux500_msp_dai_set_dai_sysclk,
+ .set_fmt = ux500_msp_dai_set_dai_fmt,
+ .set_tdm_slot = ux500_msp_dai_set_tdm_slot,
+ .startup = ux500_msp_dai_startup,
+ .shutdown = ux500_msp_dai_shutdown,
+ .prepare = ux500_msp_dai_prepare,
+ .trigger = ux500_msp_dai_trigger,
+ .hw_params = ux500_msp_dai_hw_params,
+ }
+};
+
+static struct snd_soc_dai_driver ux500_msp_dai_drv = {
+ .probe = ux500_msp_dai_probe,
+ .suspend = NULL,
+ .resume = NULL,
+ .playback.channels_min = UX500_MSP_MIN_CHANNELS,
+ .playback.channels_max = UX500_MSP_MAX_CHANNELS,
+ .playback.rates = UX500_I2S_RATES,
+ .playback.formats = UX500_I2S_FORMATS,
+ .capture.channels_min = UX500_MSP_MIN_CHANNELS,
+ .capture.channels_max = UX500_MSP_MAX_CHANNELS,
+ .capture.rates = UX500_I2S_RATES,
+ .capture.formats = UX500_I2S_FORMATS,
+ .ops = ux500_msp_dai_ops,
+};
+
+static const struct snd_soc_component_driver ux500_msp_component = {
+ .name = "ux500-msp",
+};
+
+
+static int ux500_msp_drv_probe(struct platform_device *pdev)
+{
+ struct ux500_msp_i2s_drvdata *drvdata;
+ struct msp_i2s_platform_data *pdata = pdev->dev.platform_data;
+ struct device_node *np = pdev->dev.of_node;
+ int ret = 0;
+
+ if (!pdata && !np) {
+ dev_err(&pdev->dev, "No platform data or Device Tree found\n");
+ return -ENODEV;
+ }
+
+ drvdata = devm_kzalloc(&pdev->dev,
+ sizeof(struct ux500_msp_i2s_drvdata),
+ GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
+ drvdata->fmt = 0;
+ drvdata->slots = 1;
+ drvdata->tx_mask = 0x01;
+ drvdata->rx_mask = 0x01;
+ drvdata->slot_width = 16;
+ drvdata->master_clk = MSP_INPUT_FREQ_APB;
+
+ drvdata->reg_vape = devm_regulator_get(&pdev->dev, "v-ape");
+ if (IS_ERR(drvdata->reg_vape)) {
+ ret = (int)PTR_ERR(drvdata->reg_vape);
+ dev_err(&pdev->dev,
+ "%s: ERROR: Failed to get Vape supply (%d)!\n",
+ __func__, ret);
+ return ret;
+ }
+ prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50);
+
+ drvdata->pclk = clk_get(&pdev->dev, "apb_pclk");
+ if (IS_ERR(drvdata->pclk)) {
+ ret = (int)PTR_ERR(drvdata->pclk);
+ dev_err(&pdev->dev, "%s: ERROR: clk_get of pclk failed (%d)!\n",
+ __func__, ret);
+ goto err_pclk;
+ }
+
+ drvdata->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(drvdata->clk)) {
+ ret = (int)PTR_ERR(drvdata->clk);
+ dev_err(&pdev->dev, "%s: ERROR: clk_get failed (%d)!\n",
+ __func__, ret);
+ goto err_clk;
+ }
+
+ ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp,
+ pdev->dev.platform_data);
+ if (!drvdata->msp) {
+ dev_err(&pdev->dev,
+ "%s: ERROR: Failed to init MSP-struct (%d)!",
+ __func__, ret);
+ goto err_init_msp;
+ }
+ dev_set_drvdata(&pdev->dev, drvdata);
+
+ ret = snd_soc_register_component(&pdev->dev, &ux500_msp_component,
+ &ux500_msp_dai_drv, 1);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
+ __func__, drvdata->msp->id);
+ goto err_init_msp;
+ }
+
+ ret = ux500_pcm_register_platform(pdev);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "Error: %s: Failed to register PCM platform device!\n",
+ __func__);
+ goto err_reg_plat;
+ }
+
+ return 0;
+
+err_reg_plat:
+ snd_soc_unregister_component(&pdev->dev);
+err_init_msp:
+ clk_put(drvdata->clk);
+err_clk:
+ clk_put(drvdata->pclk);
+err_pclk:
+ devm_regulator_put(drvdata->reg_vape);
+
+ return ret;
+}
+
+static int ux500_msp_drv_remove(struct platform_device *pdev)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
+
+ ux500_pcm_unregister_platform(pdev);
+
+ snd_soc_unregister_component(&pdev->dev);
+
+ devm_regulator_put(drvdata->reg_vape);
+ prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");
+
+ clk_put(drvdata->clk);
+ clk_put(drvdata->pclk);
+
+ ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);
+
+ return 0;
+}
+
+static const struct of_device_id ux500_msp_i2s_match[] = {
+ { .compatible = "stericsson,ux500-msp-i2s", },
+ {},
+};
+
+static struct platform_driver msp_i2s_driver = {
+ .driver = {
+ .name = "ux500-msp-i2s",
+ .of_match_table = ux500_msp_i2s_match,
+ },
+ .probe = ux500_msp_drv_probe,
+ .remove = ux500_msp_drv_remove,
+};
+module_platform_driver(msp_i2s_driver);
+
+MODULE_LICENSE("GPL v2");
Code Review / kvmfornfv.git / blobdiff