Add driver for running I2S with the MSP-block.
Signed-off-by: Ola Lilja <ola.o.lilja@stericsson.com>
[Fixed trailing whitespace -- broonie]
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
source "sound/soc/sh/Kconfig"
source "sound/soc/tegra/Kconfig"
source "sound/soc/txx9/Kconfig"
+source "sound/soc/ux500/Kconfig"
# Supported codecs
source "sound/soc/codecs/Kconfig"
obj-$(CONFIG_SND_SOC) += sh/
obj-$(CONFIG_SND_SOC) += tegra/
obj-$(CONFIG_SND_SOC) += txx9/
+obj-$(CONFIG_SND_SOC) += ux500/
--- /dev/null
+#
+# Ux500 SoC audio configuration
+#
+menuconfig SND_SOC_UX500
+ tristate "SoC Audio support for Ux500 platform"
+ depends on SND_SOC
+ help
+ Say Y if you want to enable ASoC-support for
+ any of the Ux500 platforms (e.g. U8500).
+
+config SND_SOC_UX500_PLAT_MSP_I2S
+ tristate "Platform - MSP (I2S)"
+ depends on SND_SOC_UX500
+ help
+ Say Y if you want to enable the Ux500 MSP I2S-driver.
--- /dev/null
+# Ux500 Platform Support
+
+snd-soc-ux500-plat-msp-i2s-objs := ux500_msp_dai.o ux500_msp_i2s.o
+obj-$(CONFIG_SND_SOC_UX500_PLAT_MSP_I2S) += snd-soc-ux500-plat-msp-i2s.o
--- /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/regulator/consumer.h>
+#include <linux/mfd/dbx500-prcmu.h>
+
+#include <mach/hardware.h>
+#include <mach/board-mop500-msp.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#include "ux500_msp_i2s.h"
+#include "ux500_msp_dai.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;
+ }
+
+ /* Enable clock */
+ dev_dbg(dai->dev, "%s: Enabling MSP-clock.\n", __func__);
+ clk_enable(drvdata->clk);
+
+ return 0;
+}
+
+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 clock */
+ clk_disable(drvdata->clk);
+
+ /* 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_probe(struct snd_soc_dai *dai)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
+
+ drvdata->playback_dma_data.dma_cfg = drvdata->msp->dma_cfg_tx;
+ drvdata->capture_dma_data.dma_cfg = drvdata->msp->dma_cfg_rx;
+
+ dai->playback_dma_data = &drvdata->playback_dma_data;
+ dai->capture_dma_data = &drvdata->capture_dma_data;
+
+ drvdata->playback_dma_data.data_size = drvdata->slot_width;
+ drvdata->capture_dma_data.data_size = drvdata->slot_width;
+
+ 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[UX500_NBR_OF_DAI] = {
+ {
+ .name = "ux500-msp-i2s.0",
+ .probe = ux500_msp_dai_probe,
+ .id = 0,
+ .suspend = NULL,
+ .resume = NULL,
+ .playback = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .ops = ux500_msp_dai_ops,
+ },
+ {
+ .name = "ux500-msp-i2s.1",
+ .probe = ux500_msp_dai_probe,
+ .id = 1,
+ .suspend = NULL,
+ .resume = NULL,
+ .playback = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .ops = ux500_msp_dai_ops,
+ },
+ {
+ .name = "ux500-msp-i2s.2",
+ .id = 2,
+ .probe = ux500_msp_dai_probe,
+ .suspend = NULL,
+ .resume = NULL,
+ .playback = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .ops = ux500_msp_dai_ops,
+ },
+ {
+ .name = "ux500-msp-i2s.3",
+ .probe = ux500_msp_dai_probe,
+ .id = 3,
+ .suspend = NULL,
+ .resume = NULL,
+ .playback = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = UX500_MSP_MIN_CHANNELS,
+ .channels_max = UX500_MSP_MAX_CHANNELS,
+ .rates = UX500_I2S_RATES,
+ .formats = UX500_I2S_FORMATS,
+ },
+ .ops = ux500_msp_dai_ops,
+ },
+};
+
+static int __devinit ux500_msp_drv_probe(struct platform_device *pdev)
+{
+ struct ux500_msp_i2s_drvdata *drvdata;
+ int ret = 0;
+
+ dev_dbg(&pdev->dev, "%s: Enter (pdev->name = %s).\n", __func__,
+ pdev->name);
+
+ drvdata = devm_kzalloc(&pdev->dev,
+ sizeof(struct ux500_msp_i2s_drvdata),
+ GFP_KERNEL);
+ 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->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_dai(&pdev->dev,
+ &ux500_msp_dai_drv[drvdata->msp->id]);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
+ __func__, drvdata->msp->id);
+ goto err_init_msp;
+ }
+
+ return 0;
+
+err_init_msp:
+ clk_put(drvdata->clk);
+
+err_clk:
+ devm_regulator_put(drvdata->reg_vape);
+
+ return ret;
+}
+
+static int __devexit ux500_msp_drv_remove(struct platform_device *pdev)
+{
+ struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
+
+ snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(ux500_msp_dai_drv));
+
+ devm_regulator_put(drvdata->reg_vape);
+ prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");
+
+ clk_put(drvdata->clk);
+
+ ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);
+
+ return 0;
+}
+
+static struct platform_driver msp_i2s_driver = {
+ .driver = {
+ .name = "ux500-msp-i2s",
+ .owner = THIS_MODULE,
+ },
+ .probe = ux500_msp_drv_probe,
+ .remove = ux500_msp_drv_remove,
+};
+module_platform_driver(msp_i2s_driver);
+
+MODULE_LICENSE("GPLv2");
--- /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.
+ */
+
+#ifndef UX500_msp_dai_H
+#define UX500_msp_dai_H
+
+#include <linux/types.h>
+#include <linux/spinlock.h>
+
+#include "ux500_msp_i2s.h"
+
+#define UX500_NBR_OF_DAI 4
+
+#define UX500_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | \
+ SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+
+#define UX500_I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
+
+#define FRAME_PER_SINGLE_SLOT_8_KHZ 31
+#define FRAME_PER_SINGLE_SLOT_16_KHZ 124
+#define FRAME_PER_SINGLE_SLOT_44_1_KHZ 63
+#define FRAME_PER_SINGLE_SLOT_48_KHZ 49
+#define FRAME_PER_2_SLOTS 31
+#define FRAME_PER_8_SLOTS 138
+#define FRAME_PER_16_SLOTS 277
+
+#ifndef CONFIG_SND_SOC_UX500_AB5500
+#define UX500_MSP_INTERNAL_CLOCK_FREQ 40000000
+#define UX500_MSP1_INTERNAL_CLOCK_FREQ UX500_MSP_INTERNAL_CLOCK_FREQ
+#else
+#define UX500_MSP_INTERNAL_CLOCK_FREQ 13000000
+#define UX500_MSP1_INTERNAL_CLOCK_FREQ (UX500_MSP_INTERNAL_CLOCK_FREQ * 2)
+#endif
+
+#define UX500_MSP_MIN_CHANNELS 1
+#define UX500_MSP_MAX_CHANNELS 8
+
+#define PLAYBACK_CONFIGURED 1
+#define CAPTURE_CONFIGURED 2
+
+enum ux500_msp_clock_id {
+ UX500_MSP_MASTER_CLOCK,
+};
+
+struct ux500_msp_i2s_drvdata {
+ struct ux500_msp *msp;
+ struct regulator *reg_vape;
+ struct ux500_msp_dma_params playback_dma_data;
+ struct ux500_msp_dma_params capture_dma_data;
+ unsigned int fmt;
+ unsigned int tx_mask;
+ unsigned int rx_mask;
+ int slots;
+ int slot_width;
+ u8 configured;
+ int data_delay;
+
+ /* Clocks */
+ unsigned int master_clk;
+ struct clk *clk;
+
+ /* Regulators */
+ int vape_opp_constraint;
+};
+
+int ux500_msp_dai_set_data_delay(struct snd_soc_dai *dai, int delay);
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
+ * Roger Nilsson <roger.xr.nilsson@stericsson.com>,
+ * Sandeep Kaushik <sandeep.kaushik@st.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/platform_device.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+
+#include <mach/hardware.h>
+#include <mach/board-mop500-msp.h>
+
+#include <sound/soc.h>
+
+#include "ux500_msp_i2s.h"
+
+ /* Protocol desciptors */
+static const struct msp_protdesc prot_descs[] = {
+ { /* I2S */
+ MSP_SINGLE_PHASE,
+ MSP_SINGLE_PHASE,
+ MSP_PHASE2_START_MODE_IMEDIATE,
+ MSP_PHASE2_START_MODE_IMEDIATE,
+ MSP_BTF_MS_BIT_FIRST,
+ MSP_BTF_MS_BIT_FIRST,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_ELEM_LEN_32,
+ MSP_ELEM_LEN_32,
+ MSP_ELEM_LEN_32,
+ MSP_ELEM_LEN_32,
+ MSP_DELAY_1,
+ MSP_DELAY_1,
+ MSP_RISING_EDGE,
+ MSP_FALLING_EDGE,
+ MSP_FSYNC_POL_ACT_LO,
+ MSP_FSYNC_POL_ACT_LO,
+ MSP_SWAP_NONE,
+ MSP_SWAP_NONE,
+ MSP_COMPRESS_MODE_LINEAR,
+ MSP_EXPAND_MODE_LINEAR,
+ MSP_FSYNC_IGNORE,
+ 31,
+ 15,
+ 32,
+ }, { /* PCM */
+ MSP_DUAL_PHASE,
+ MSP_DUAL_PHASE,
+ MSP_PHASE2_START_MODE_FSYNC,
+ MSP_PHASE2_START_MODE_FSYNC,
+ MSP_BTF_MS_BIT_FIRST,
+ MSP_BTF_MS_BIT_FIRST,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_ELEM_LEN_16,
+ MSP_ELEM_LEN_16,
+ MSP_ELEM_LEN_16,
+ MSP_ELEM_LEN_16,
+ MSP_DELAY_0,
+ MSP_DELAY_0,
+ MSP_RISING_EDGE,
+ MSP_FALLING_EDGE,
+ MSP_FSYNC_POL_ACT_HI,
+ MSP_FSYNC_POL_ACT_HI,
+ MSP_SWAP_NONE,
+ MSP_SWAP_NONE,
+ MSP_COMPRESS_MODE_LINEAR,
+ MSP_EXPAND_MODE_LINEAR,
+ MSP_FSYNC_IGNORE,
+ 255,
+ 0,
+ 256,
+ }, { /* Companded PCM */
+ MSP_SINGLE_PHASE,
+ MSP_SINGLE_PHASE,
+ MSP_PHASE2_START_MODE_FSYNC,
+ MSP_PHASE2_START_MODE_FSYNC,
+ MSP_BTF_MS_BIT_FIRST,
+ MSP_BTF_MS_BIT_FIRST,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_FRAME_LEN_1,
+ MSP_ELEM_LEN_8,
+ MSP_ELEM_LEN_8,
+ MSP_ELEM_LEN_8,
+ MSP_ELEM_LEN_8,
+ MSP_DELAY_0,
+ MSP_DELAY_0,
+ MSP_RISING_EDGE,
+ MSP_RISING_EDGE,
+ MSP_FSYNC_POL_ACT_HI,
+ MSP_FSYNC_POL_ACT_HI,
+ MSP_SWAP_NONE,
+ MSP_SWAP_NONE,
+ MSP_COMPRESS_MODE_LINEAR,
+ MSP_EXPAND_MODE_LINEAR,
+ MSP_FSYNC_IGNORE,
+ 255,
+ 0,
+ 256,
+ },
+};
+
+static void set_prot_desc_tx(struct ux500_msp *msp,
+ struct msp_protdesc *protdesc,
+ enum msp_data_size data_size)
+{
+ u32 temp_reg = 0;
+
+ temp_reg |= MSP_P2_ENABLE_BIT(protdesc->tx_phase_mode);
+ temp_reg |= MSP_P2_START_MODE_BIT(protdesc->tx_phase2_start_mode);
+ temp_reg |= MSP_P1_FRAME_LEN_BITS(protdesc->tx_frame_len_1);
+ temp_reg |= MSP_P2_FRAME_LEN_BITS(protdesc->tx_frame_len_2);
+ if (msp->def_elem_len) {
+ temp_reg |= MSP_P1_ELEM_LEN_BITS(protdesc->tx_elem_len_1);
+ temp_reg |= MSP_P2_ELEM_LEN_BITS(protdesc->tx_elem_len_2);
+ } else {
+ temp_reg |= MSP_P1_ELEM_LEN_BITS(data_size);
+ temp_reg |= MSP_P2_ELEM_LEN_BITS(data_size);
+ }
+ temp_reg |= MSP_DATA_DELAY_BITS(protdesc->tx_data_delay);
+ temp_reg |= MSP_SET_ENDIANNES_BIT(protdesc->tx_byte_order);
+ temp_reg |= MSP_FSYNC_POL(protdesc->tx_fsync_pol);
+ temp_reg |= MSP_DATA_WORD_SWAP(protdesc->tx_half_word_swap);
+ temp_reg |= MSP_SET_COMPANDING_MODE(protdesc->compression_mode);
+ temp_reg |= MSP_SET_FSYNC_IGNORE(protdesc->frame_sync_ignore);
+
+ writel(temp_reg, msp->registers + MSP_TCF);
+}
+
+static void set_prot_desc_rx(struct ux500_msp *msp,
+ struct msp_protdesc *protdesc,
+ enum msp_data_size data_size)
+{
+ u32 temp_reg = 0;
+
+ temp_reg |= MSP_P2_ENABLE_BIT(protdesc->rx_phase_mode);
+ temp_reg |= MSP_P2_START_MODE_BIT(protdesc->rx_phase2_start_mode);
+ temp_reg |= MSP_P1_FRAME_LEN_BITS(protdesc->rx_frame_len_1);
+ temp_reg |= MSP_P2_FRAME_LEN_BITS(protdesc->rx_frame_len_2);
+ if (msp->def_elem_len) {
+ temp_reg |= MSP_P1_ELEM_LEN_BITS(protdesc->rx_elem_len_1);
+ temp_reg |= MSP_P2_ELEM_LEN_BITS(protdesc->rx_elem_len_2);
+ } else {
+ temp_reg |= MSP_P1_ELEM_LEN_BITS(data_size);
+ temp_reg |= MSP_P2_ELEM_LEN_BITS(data_size);
+ }
+
+ temp_reg |= MSP_DATA_DELAY_BITS(protdesc->rx_data_delay);
+ temp_reg |= MSP_SET_ENDIANNES_BIT(protdesc->rx_byte_order);
+ temp_reg |= MSP_FSYNC_POL(protdesc->rx_fsync_pol);
+ temp_reg |= MSP_DATA_WORD_SWAP(protdesc->rx_half_word_swap);
+ temp_reg |= MSP_SET_COMPANDING_MODE(protdesc->expansion_mode);
+ temp_reg |= MSP_SET_FSYNC_IGNORE(protdesc->frame_sync_ignore);
+
+ writel(temp_reg, msp->registers + MSP_RCF);
+}
+
+static int configure_protocol(struct ux500_msp *msp,
+ struct ux500_msp_config *config)
+{
+ struct msp_protdesc *protdesc;
+ enum msp_data_size data_size;
+ u32 temp_reg = 0;
+
+ data_size = config->data_size;
+ msp->def_elem_len = config->def_elem_len;
+ if (config->default_protdesc == 1) {
+ if (config->protocol >= MSP_INVALID_PROTOCOL) {
+ dev_err(msp->dev, "%s: ERROR: Invalid protocol!\n",
+ __func__);
+ return -EINVAL;
+ }
+ protdesc =
+ (struct msp_protdesc *)&prot_descs[config->protocol];
+ } else {
+ protdesc = (struct msp_protdesc *)&config->protdesc;
+ }
+
+ if (data_size < MSP_DATA_BITS_DEFAULT || data_size > MSP_DATA_BITS_32) {
+ dev_err(msp->dev,
+ "%s: ERROR: Invalid data-size requested (data_size = %d)!\n",
+ __func__, data_size);
+ return -EINVAL;
+ }
+
+ if (config->direction & MSP_DIR_TX)
+ set_prot_desc_tx(msp, protdesc, data_size);
+ if (config->direction & MSP_DIR_RX)
+ set_prot_desc_rx(msp, protdesc, data_size);
+
+ /* The code below should not be separated. */
+ temp_reg = readl(msp->registers + MSP_GCR) & ~TX_CLK_POL_RISING;
+ temp_reg |= MSP_TX_CLKPOL_BIT(~protdesc->tx_clk_pol);
+ writel(temp_reg, msp->registers + MSP_GCR);
+ temp_reg = readl(msp->registers + MSP_GCR) & ~RX_CLK_POL_RISING;
+ temp_reg |= MSP_RX_CLKPOL_BIT(protdesc->rx_clk_pol);
+ writel(temp_reg, msp->registers + MSP_GCR);
+
+ return 0;
+}
+
+static int setup_bitclk(struct ux500_msp *msp, struct ux500_msp_config *config)
+{
+ u32 reg_val_GCR;
+ u32 frame_per = 0;
+ u32 sck_div = 0;
+ u32 frame_width = 0;
+ u32 temp_reg = 0;
+ struct msp_protdesc *protdesc = NULL;
+
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR & ~SRG_ENABLE, msp->registers + MSP_GCR);
+
+ if (config->default_protdesc)
+ protdesc =
+ (struct msp_protdesc *)&prot_descs[config->protocol];
+ else
+ protdesc = (struct msp_protdesc *)&config->protdesc;
+
+ switch (config->protocol) {
+ case MSP_PCM_PROTOCOL:
+ case MSP_PCM_COMPAND_PROTOCOL:
+ frame_width = protdesc->frame_width;
+ sck_div = config->f_inputclk / (config->frame_freq *
+ (protdesc->clocks_per_frame));
+ frame_per = protdesc->frame_period;
+ break;
+ case MSP_I2S_PROTOCOL:
+ frame_width = protdesc->frame_width;
+ sck_div = config->f_inputclk / (config->frame_freq *
+ (protdesc->clocks_per_frame));
+ frame_per = protdesc->frame_period;
+ break;
+ default:
+ dev_err(msp->dev, "%s: ERROR: Unknown protocol (%d)!\n",
+ __func__,
+ config->protocol);
+ return -EINVAL;
+ }
+
+ temp_reg = (sck_div - 1) & SCK_DIV_MASK;
+ temp_reg |= FRAME_WIDTH_BITS(frame_width);
+ temp_reg |= FRAME_PERIOD_BITS(frame_per);
+ writel(temp_reg, msp->registers + MSP_SRG);
+
+ msp->f_bitclk = (config->f_inputclk)/(sck_div + 1);
+
+ /* Enable bit-clock */
+ udelay(100);
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR | SRG_ENABLE, msp->registers + MSP_GCR);
+ udelay(100);
+
+ return 0;
+}
+
+static int configure_multichannel(struct ux500_msp *msp,
+ struct ux500_msp_config *config)
+{
+ struct msp_protdesc *protdesc;
+ struct msp_multichannel_config *mcfg;
+ u32 reg_val_MCR;
+
+ if (config->default_protdesc == 1) {
+ if (config->protocol >= MSP_INVALID_PROTOCOL) {
+ dev_err(msp->dev,
+ "%s: ERROR: Invalid protocol (%d)!\n",
+ __func__, config->protocol);
+ return -EINVAL;
+ }
+ protdesc = (struct msp_protdesc *)
+ &prot_descs[config->protocol];
+ } else {
+ protdesc = (struct msp_protdesc *)&config->protdesc;
+ }
+
+ mcfg = &config->multichannel_config;
+ if (mcfg->tx_multichannel_enable) {
+ if (protdesc->tx_phase_mode == MSP_SINGLE_PHASE) {
+ reg_val_MCR = readl(msp->registers + MSP_MCR);
+ writel(reg_val_MCR | (mcfg->tx_multichannel_enable ?
+ 1 << TMCEN_BIT : 0),
+ msp->registers + MSP_MCR);
+ writel(mcfg->tx_channel_0_enable,
+ msp->registers + MSP_TCE0);
+ writel(mcfg->tx_channel_1_enable,
+ msp->registers + MSP_TCE1);
+ writel(mcfg->tx_channel_2_enable,
+ msp->registers + MSP_TCE2);
+ writel(mcfg->tx_channel_3_enable,
+ msp->registers + MSP_TCE3);
+ } else {
+ dev_err(msp->dev,
+ "%s: ERROR: Only single-phase supported (TX-mode: %d)!\n",
+ __func__, protdesc->tx_phase_mode);
+ return -EINVAL;
+ }
+ }
+ if (mcfg->rx_multichannel_enable) {
+ if (protdesc->rx_phase_mode == MSP_SINGLE_PHASE) {
+ reg_val_MCR = readl(msp->registers + MSP_MCR);
+ writel(reg_val_MCR | (mcfg->rx_multichannel_enable ?
+ 1 << RMCEN_BIT : 0),
+ msp->registers + MSP_MCR);
+ writel(mcfg->rx_channel_0_enable,
+ msp->registers + MSP_RCE0);
+ writel(mcfg->rx_channel_1_enable,
+ msp->registers + MSP_RCE1);
+ writel(mcfg->rx_channel_2_enable,
+ msp->registers + MSP_RCE2);
+ writel(mcfg->rx_channel_3_enable,
+ msp->registers + MSP_RCE3);
+ } else {
+ dev_err(msp->dev,
+ "%s: ERROR: Only single-phase supported (RX-mode: %d)!\n",
+ __func__, protdesc->rx_phase_mode);
+ return -EINVAL;
+ }
+ if (mcfg->rx_comparison_enable_mode) {
+ reg_val_MCR = readl(msp->registers + MSP_MCR);
+ writel(reg_val_MCR |
+ (mcfg->rx_comparison_enable_mode << RCMPM_BIT),
+ msp->registers + MSP_MCR);
+
+ writel(mcfg->comparison_mask,
+ msp->registers + MSP_RCM);
+ writel(mcfg->comparison_value,
+ msp->registers + MSP_RCV);
+
+ }
+ }
+
+ return 0;
+}
+
+static int enable_msp(struct ux500_msp *msp, struct ux500_msp_config *config)
+{
+ int status = 0;
+ u32 reg_val_DMACR, reg_val_GCR;
+
+ /* Check msp state whether in RUN or CONFIGURED Mode */
+ if ((msp->msp_state == MSP_STATE_IDLE) && (msp->plat_init)) {
+ status = msp->plat_init();
+ if (status) {
+ dev_err(msp->dev, "%s: ERROR: Failed to init MSP (%d)!\n",
+ __func__, status);
+ return status;
+ }
+ }
+
+ /* Configure msp with protocol dependent settings */
+ configure_protocol(msp, config);
+ setup_bitclk(msp, config);
+ if (config->multichannel_configured == 1) {
+ status = configure_multichannel(msp, config);
+ if (status)
+ dev_warn(msp->dev,
+ "%s: WARN: configure_multichannel failed (%d)!\n",
+ __func__, status);
+ }
+
+ /* Make sure the correct DMA-directions are configured */
+ if ((config->direction & MSP_DIR_RX) && (!msp->dma_cfg_rx)) {
+ dev_err(msp->dev, "%s: ERROR: MSP RX-mode is not configured!",
+ __func__);
+ return -EINVAL;
+ }
+ if ((config->direction == MSP_DIR_TX) && (!msp->dma_cfg_tx)) {
+ dev_err(msp->dev, "%s: ERROR: MSP TX-mode is not configured!",
+ __func__);
+ return -EINVAL;
+ }
+
+ reg_val_DMACR = readl(msp->registers + MSP_DMACR);
+ if (config->direction & MSP_DIR_RX)
+ reg_val_DMACR |= RX_DMA_ENABLE;
+ if (config->direction & MSP_DIR_TX)
+ reg_val_DMACR |= TX_DMA_ENABLE;
+ writel(reg_val_DMACR, msp->registers + MSP_DMACR);
+
+ writel(config->iodelay, msp->registers + MSP_IODLY);
+
+ /* Enable frame generation logic */
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR | FRAME_GEN_ENABLE, msp->registers + MSP_GCR);
+
+ return status;
+}
+
+static void flush_fifo_rx(struct ux500_msp *msp)
+{
+ u32 reg_val_DR, reg_val_GCR, reg_val_FLR;
+ u32 limit = 32;
+
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR | RX_ENABLE, msp->registers + MSP_GCR);
+
+ reg_val_FLR = readl(msp->registers + MSP_FLR);
+ while (!(reg_val_FLR & RX_FIFO_EMPTY) && limit--) {
+ reg_val_DR = readl(msp->registers + MSP_DR);
+ reg_val_FLR = readl(msp->registers + MSP_FLR);
+ }
+
+ writel(reg_val_GCR, msp->registers + MSP_GCR);
+}
+
+static void flush_fifo_tx(struct ux500_msp *msp)
+{
+ u32 reg_val_TSTDR, reg_val_GCR, reg_val_FLR;
+ u32 limit = 32;
+
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR | TX_ENABLE, msp->registers + MSP_GCR);
+ writel(MSP_ITCR_ITEN | MSP_ITCR_TESTFIFO, msp->registers + MSP_ITCR);
+
+ reg_val_FLR = readl(msp->registers + MSP_FLR);
+ while (!(reg_val_FLR & TX_FIFO_EMPTY) && limit--) {
+ reg_val_TSTDR = readl(msp->registers + MSP_TSTDR);
+ reg_val_FLR = readl(msp->registers + MSP_FLR);
+ }
+ writel(0x0, msp->registers + MSP_ITCR);
+ writel(reg_val_GCR, msp->registers + MSP_GCR);
+}
+
+int ux500_msp_i2s_open(struct ux500_msp *msp,
+ struct ux500_msp_config *config)
+{
+ u32 old_reg, new_reg, mask;
+ int res;
+ unsigned int tx_sel, rx_sel, tx_busy, rx_busy;
+
+ if (in_interrupt()) {
+ dev_err(msp->dev,
+ "%s: ERROR: Open called in interrupt context!\n",
+ __func__);
+ return -1;
+ }
+
+ tx_sel = (config->direction & MSP_DIR_TX) > 0;
+ rx_sel = (config->direction & MSP_DIR_RX) > 0;
+ if (!tx_sel && !rx_sel) {
+ dev_err(msp->dev, "%s: Error: No direction selected!\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ tx_busy = (msp->dir_busy & MSP_DIR_TX) > 0;
+ rx_busy = (msp->dir_busy & MSP_DIR_RX) > 0;
+ if (tx_busy && tx_sel) {
+ dev_err(msp->dev, "%s: Error: TX is in use!\n", __func__);
+ return -EBUSY;
+ }
+ if (rx_busy && rx_sel) {
+ dev_err(msp->dev, "%s: Error: RX is in use!\n", __func__);
+ return -EBUSY;
+ }
+
+ msp->dir_busy |= (tx_sel ? MSP_DIR_TX : 0) | (rx_sel ? MSP_DIR_RX : 0);
+
+ /* First do the global config register */
+ mask = RX_CLK_SEL_MASK | TX_CLK_SEL_MASK | RX_FSYNC_MASK |
+ TX_FSYNC_MASK | RX_SYNC_SEL_MASK | TX_SYNC_SEL_MASK |
+ RX_FIFO_ENABLE_MASK | TX_FIFO_ENABLE_MASK | SRG_CLK_SEL_MASK |
+ LOOPBACK_MASK | TX_EXTRA_DELAY_MASK;
+
+ new_reg = (config->tx_clk_sel | config->rx_clk_sel |
+ config->rx_fsync_pol | config->tx_fsync_pol |
+ config->rx_fsync_sel | config->tx_fsync_sel |
+ config->rx_fifo_config | config->tx_fifo_config |
+ config->srg_clk_sel | config->loopback_enable |
+ config->tx_data_enable);
+
+ old_reg = readl(msp->registers + MSP_GCR);
+ old_reg &= ~mask;
+ new_reg |= old_reg;
+ writel(new_reg, msp->registers + MSP_GCR);
+
+ res = enable_msp(msp, config);
+ if (res < 0) {
+ dev_err(msp->dev, "%s: ERROR: enable_msp failed (%d)!\n",
+ __func__, res);
+ return -EBUSY;
+ }
+ if (config->loopback_enable & 0x80)
+ msp->loopback_enable = 1;
+
+ /* Flush FIFOs */
+ flush_fifo_tx(msp);
+ flush_fifo_rx(msp);
+
+ msp->msp_state = MSP_STATE_CONFIGURED;
+ return 0;
+}
+
+static void disable_msp_rx(struct ux500_msp *msp)
+{
+ u32 reg_val_GCR, reg_val_DMACR, reg_val_IMSC;
+
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR & ~RX_ENABLE, msp->registers + MSP_GCR);
+ reg_val_DMACR = readl(msp->registers + MSP_DMACR);
+ writel(reg_val_DMACR & ~RX_DMA_ENABLE, msp->registers + MSP_DMACR);
+ reg_val_IMSC = readl(msp->registers + MSP_IMSC);
+ writel(reg_val_IMSC &
+ ~(RX_SERVICE_INT | RX_OVERRUN_ERROR_INT),
+ msp->registers + MSP_IMSC);
+
+ msp->dir_busy &= ~MSP_DIR_RX;
+}
+
+static void disable_msp_tx(struct ux500_msp *msp)
+{
+ u32 reg_val_GCR, reg_val_DMACR, reg_val_IMSC;
+
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR & ~TX_ENABLE, msp->registers + MSP_GCR);
+ reg_val_DMACR = readl(msp->registers + MSP_DMACR);
+ writel(reg_val_DMACR & ~TX_DMA_ENABLE, msp->registers + MSP_DMACR);
+ reg_val_IMSC = readl(msp->registers + MSP_IMSC);
+ writel(reg_val_IMSC &
+ ~(TX_SERVICE_INT | TX_UNDERRUN_ERR_INT),
+ msp->registers + MSP_IMSC);
+
+ msp->dir_busy &= ~MSP_DIR_TX;
+}
+
+static int disable_msp(struct ux500_msp *msp, unsigned int dir)
+{
+ u32 reg_val_GCR;
+ int status = 0;
+ unsigned int disable_tx, disable_rx;
+
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ disable_tx = dir & MSP_DIR_TX;
+ disable_rx = dir & MSP_DIR_TX;
+ if (disable_tx && disable_rx) {
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR | LOOPBACK_MASK,
+ msp->registers + MSP_GCR);
+
+ /* Flush TX-FIFO */
+ flush_fifo_tx(msp);
+
+ /* Disable TX-channel */
+ writel((readl(msp->registers + MSP_GCR) &
+ (~TX_ENABLE)), msp->registers + MSP_GCR);
+
+ /* Flush RX-FIFO */
+ flush_fifo_rx(msp);
+
+ /* Disable Loopback and Receive channel */
+ writel((readl(msp->registers + MSP_GCR) &
+ (~(RX_ENABLE | LOOPBACK_MASK))),
+ msp->registers + MSP_GCR);
+
+ disable_msp_tx(msp);
+ disable_msp_rx(msp);
+ } else if (disable_tx)
+ disable_msp_tx(msp);
+ else if (disable_rx)
+ disable_msp_rx(msp);
+
+ return status;
+}
+
+int ux500_msp_i2s_trigger(struct ux500_msp *msp, int cmd, int direction)
+{
+ u32 reg_val_GCR, enable_bit;
+
+ if (msp->msp_state == MSP_STATE_IDLE) {
+ dev_err(msp->dev, "%s: ERROR: MSP is not configured!\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK)
+ enable_bit = TX_ENABLE;
+ else
+ enable_bit = RX_ENABLE;
+ reg_val_GCR = readl(msp->registers + MSP_GCR);
+ writel(reg_val_GCR | enable_bit, msp->registers + MSP_GCR);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK)
+ disable_msp_tx(msp);
+ else
+ disable_msp_rx(msp);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+
+ return 0;
+}
+
+int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir)
+{
+ int status = 0;
+
+ dev_dbg(msp->dev, "%s: Enter (dir = 0x%01x).\n", __func__, dir);
+
+ status = disable_msp(msp, dir);
+ if (msp->dir_busy == 0) {
+ /* disable sample rate and frame generators */
+ msp->msp_state = MSP_STATE_IDLE;
+ writel((readl(msp->registers + MSP_GCR) &
+ (~(FRAME_GEN_ENABLE | SRG_ENABLE))),
+ msp->registers + MSP_GCR);
+ if (msp->plat_exit)
+ status = msp->plat_exit();
+ if (status)
+ dev_warn(msp->dev,
+ "%s: WARN: ux500_msp_i2s_exit failed (%d)!\n",
+ __func__, status);
+ writel(0, msp->registers + MSP_GCR);
+ writel(0, msp->registers + MSP_TCF);
+ writel(0, msp->registers + MSP_RCF);
+ writel(0, msp->registers + MSP_DMACR);
+ writel(0, msp->registers + MSP_SRG);
+ writel(0, msp->registers + MSP_MCR);
+ writel(0, msp->registers + MSP_RCM);
+ writel(0, msp->registers + MSP_RCV);
+ writel(0, msp->registers + MSP_TCE0);
+ writel(0, msp->registers + MSP_TCE1);
+ writel(0, msp->registers + MSP_TCE2);
+ writel(0, msp->registers + MSP_TCE3);
+ writel(0, msp->registers + MSP_RCE0);
+ writel(0, msp->registers + MSP_RCE1);
+ writel(0, msp->registers + MSP_RCE2);
+ writel(0, msp->registers + MSP_RCE3);
+ }
+
+ return status;
+
+}
+
+int ux500_msp_i2s_init_msp(struct platform_device *pdev,
+ struct ux500_msp **msp_p,
+ struct msp_i2s_platform_data *platform_data)
+{
+ int ret = 0;
+ struct resource *res = NULL;
+ struct i2s_controller *i2s_cont;
+ struct ux500_msp *msp;
+
+ dev_dbg(&pdev->dev, "%s: Enter (name: %s, id: %d).\n", __func__,
+ pdev->name, platform_data->id);
+
+ *msp_p = devm_kzalloc(&pdev->dev, sizeof(struct ux500_msp), GFP_KERNEL);
+ msp = *msp_p;
+
+ msp->id = platform_data->id;
+ msp->dev = &pdev->dev;
+ msp->plat_init = platform_data->msp_i2s_init;
+ msp->plat_exit = platform_data->msp_i2s_exit;
+ msp->dma_cfg_rx = platform_data->msp_i2s_dma_rx;
+ msp->dma_cfg_tx = platform_data->msp_i2s_dma_tx;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "%s: ERROR: Unable to get resource!\n",
+ __func__);
+ ret = -ENOMEM;
+ goto err_res;
+ }
+
+ msp->registers = ioremap(res->start, (res->end - res->start + 1));
+ if (msp->registers == NULL) {
+ dev_err(&pdev->dev, "%s: ERROR: ioremap failed!\n", __func__);
+ ret = -ENOMEM;
+ goto err_res;
+ }
+
+ msp->msp_state = MSP_STATE_IDLE;
+ msp->loopback_enable = 0;
+
+ /* I2S-controller is allocated and added in I2S controller class. */
+ i2s_cont = devm_kzalloc(&pdev->dev, sizeof(*i2s_cont), GFP_KERNEL);
+ if (!i2s_cont) {
+ dev_err(&pdev->dev,
+ "%s: ERROR: Failed to allocate I2S-controller!\n",
+ __func__);
+ goto err_i2s_cont;
+ }
+ i2s_cont->dev.parent = &pdev->dev;
+ i2s_cont->data = (void *)msp;
+ i2s_cont->id = (s16)msp->id;
+ snprintf(i2s_cont->name, sizeof(i2s_cont->name), "ux500-msp-i2s.%04x",
+ msp->id);
+ dev_dbg(&pdev->dev, "I2S device-name: '%s'\n", i2s_cont->name);
+ msp->i2s_cont = i2s_cont;
+
+ return 0;
+
+err_i2s_cont:
+ iounmap(msp->registers);
+
+err_res:
+ devm_kfree(&pdev->dev, msp);
+
+ return ret;
+}
+
+void ux500_msp_i2s_cleanup_msp(struct platform_device *pdev,
+ struct ux500_msp *msp)
+{
+ dev_dbg(msp->dev, "%s: Enter (id = %d).\n", __func__, msp->id);
+
+ device_unregister(&msp->i2s_cont->dev);
+ devm_kfree(&pdev->dev, msp->i2s_cont);
+
+ iounmap(msp->registers);
+
+ devm_kfree(&pdev->dev, msp);
+}
+
+MODULE_LICENSE("GPLv2");
--- /dev/null
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Author: Ola Lilja <ola.o.lilja@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.
+ */
+
+
+#ifndef UX500_MSP_I2S_H
+#define UX500_MSP_I2S_H
+
+#include <linux/platform_device.h>
+
+#include <mach/board-mop500-msp.h>
+
+#define MSP_INPUT_FREQ_APB 48000000
+
+/*** Stereo mode. Used for APB data accesses as 16 bits accesses (mono),
+ * 32 bits accesses (stereo).
+ ***/
+enum msp_stereo_mode {
+ MSP_MONO,
+ MSP_STEREO
+};
+
+/* Direction (Transmit/Receive mode) */
+enum msp_direction {
+ MSP_TX = 1,
+ MSP_RX = 2
+};
+
+/* Transmit and receive configuration register */
+#define MSP_BIG_ENDIAN 0x00000000
+#define MSP_LITTLE_ENDIAN 0x00001000
+#define MSP_UNEXPECTED_FS_ABORT 0x00000000
+#define MSP_UNEXPECTED_FS_IGNORE 0x00008000
+#define MSP_NON_MODE_BIT_MASK 0x00009000
+
+/* Global configuration register */
+#define RX_ENABLE 0x00000001
+#define RX_FIFO_ENABLE 0x00000002
+#define RX_SYNC_SRG 0x00000010
+#define RX_CLK_POL_RISING 0x00000020
+#define RX_CLK_SEL_SRG 0x00000040
+#define TX_ENABLE 0x00000100
+#define TX_FIFO_ENABLE 0x00000200
+#define TX_SYNC_SRG_PROG 0x00001800
+#define TX_SYNC_SRG_AUTO 0x00001000
+#define TX_CLK_POL_RISING 0x00002000
+#define TX_CLK_SEL_SRG 0x00004000
+#define TX_EXTRA_DELAY_ENABLE 0x00008000
+#define SRG_ENABLE 0x00010000
+#define FRAME_GEN_ENABLE 0x00100000
+#define SRG_CLK_SEL_APB 0x00000000
+#define RX_FIFO_SYNC_HI 0x00000000
+#define TX_FIFO_SYNC_HI 0x00000000
+#define SPI_CLK_MODE_NORMAL 0x00000000
+
+#define MSP_FRAME_SIZE_AUTO -1
+
+#define MSP_DR 0x00
+#define MSP_GCR 0x04
+#define MSP_TCF 0x08
+#define MSP_RCF 0x0c
+#define MSP_SRG 0x10
+#define MSP_FLR 0x14
+#define MSP_DMACR 0x18
+
+#define MSP_IMSC 0x20
+#define MSP_RIS 0x24
+#define MSP_MIS 0x28
+#define MSP_ICR 0x2c
+#define MSP_MCR 0x30
+#define MSP_RCV 0x34
+#define MSP_RCM 0x38
+
+#define MSP_TCE0 0x40
+#define MSP_TCE1 0x44
+#define MSP_TCE2 0x48
+#define MSP_TCE3 0x4c
+
+#define MSP_RCE0 0x60
+#define MSP_RCE1 0x64
+#define MSP_RCE2 0x68
+#define MSP_RCE3 0x6c
+#define MSP_IODLY 0x70
+
+#define MSP_ITCR 0x80
+#define MSP_ITIP 0x84
+#define MSP_ITOP 0x88
+#define MSP_TSTDR 0x8c
+
+#define MSP_PID0 0xfe0
+#define MSP_PID1 0xfe4
+#define MSP_PID2 0xfe8
+#define MSP_PID3 0xfec
+
+#define MSP_CID0 0xff0
+#define MSP_CID1 0xff4
+#define MSP_CID2 0xff8
+#define MSP_CID3 0xffc
+
+/* Protocol dependant parameters list */
+#define RX_ENABLE_MASK BIT(0)
+#define RX_FIFO_ENABLE_MASK BIT(1)
+#define RX_FSYNC_MASK BIT(2)
+#define DIRECT_COMPANDING_MASK BIT(3)
+#define RX_SYNC_SEL_MASK BIT(4)
+#define RX_CLK_POL_MASK BIT(5)
+#define RX_CLK_SEL_MASK BIT(6)
+#define LOOPBACK_MASK BIT(7)
+#define TX_ENABLE_MASK BIT(8)
+#define TX_FIFO_ENABLE_MASK BIT(9)
+#define TX_FSYNC_MASK BIT(10)
+#define TX_MSP_TDR_TSR BIT(11)
+#define TX_SYNC_SEL_MASK (BIT(12) | BIT(11))
+#define TX_CLK_POL_MASK BIT(13)
+#define TX_CLK_SEL_MASK BIT(14)
+#define TX_EXTRA_DELAY_MASK BIT(15)
+#define SRG_ENABLE_MASK BIT(16)
+#define SRG_CLK_POL_MASK BIT(17)
+#define SRG_CLK_SEL_MASK (BIT(19) | BIT(18))
+#define FRAME_GEN_EN_MASK BIT(20)
+#define SPI_CLK_MODE_MASK (BIT(22) | BIT(21))
+#define SPI_BURST_MODE_MASK BIT(23)
+
+#define RXEN_SHIFT 0
+#define RFFEN_SHIFT 1
+#define RFSPOL_SHIFT 2
+#define DCM_SHIFT 3
+#define RFSSEL_SHIFT 4
+#define RCKPOL_SHIFT 5
+#define RCKSEL_SHIFT 6
+#define LBM_SHIFT 7
+#define TXEN_SHIFT 8
+#define TFFEN_SHIFT 9
+#define TFSPOL_SHIFT 10
+#define TFSSEL_SHIFT 11
+#define TCKPOL_SHIFT 13
+#define TCKSEL_SHIFT 14
+#define TXDDL_SHIFT 15
+#define SGEN_SHIFT 16
+#define SCKPOL_SHIFT 17
+#define SCKSEL_SHIFT 18
+#define FGEN_SHIFT 20
+#define SPICKM_SHIFT 21
+#define TBSWAP_SHIFT 28
+
+#define RCKPOL_MASK BIT(0)
+#define TCKPOL_MASK BIT(0)
+#define SPICKM_MASK (BIT(1) | BIT(0))
+#define MSP_RX_CLKPOL_BIT(n) ((n & RCKPOL_MASK) << RCKPOL_SHIFT)
+#define MSP_TX_CLKPOL_BIT(n) ((n & TCKPOL_MASK) << TCKPOL_SHIFT)
+
+#define P1ELEN_SHIFT 0
+#define P1FLEN_SHIFT 3
+#define DTYP_SHIFT 10
+#define ENDN_SHIFT 12
+#define DDLY_SHIFT 13
+#define FSIG_SHIFT 15
+#define P2ELEN_SHIFT 16
+#define P2FLEN_SHIFT 19
+#define P2SM_SHIFT 26
+#define P2EN_SHIFT 27
+#define FSYNC_SHIFT 15
+
+#define P1ELEN_MASK 0x00000007
+#define P2ELEN_MASK 0x00070000
+#define P1FLEN_MASK 0x00000378
+#define P2FLEN_MASK 0x03780000
+#define DDLY_MASK 0x00003000
+#define DTYP_MASK 0x00000600
+#define P2SM_MASK 0x04000000
+#define P2EN_MASK 0x08000000
+#define ENDN_MASK 0x00001000
+#define TFSPOL_MASK 0x00000400
+#define TBSWAP_MASK 0x30000000
+#define COMPANDING_MODE_MASK 0x00000c00
+#define FSYNC_MASK 0x00008000
+
+#define MSP_P1_ELEM_LEN_BITS(n) (n & P1ELEN_MASK)
+#define MSP_P2_ELEM_LEN_BITS(n) (((n) << P2ELEN_SHIFT) & P2ELEN_MASK)
+#define MSP_P1_FRAME_LEN_BITS(n) (((n) << P1FLEN_SHIFT) & P1FLEN_MASK)
+#define MSP_P2_FRAME_LEN_BITS(n) (((n) << P2FLEN_SHIFT) & P2FLEN_MASK)
+#define MSP_DATA_DELAY_BITS(n) (((n) << DDLY_SHIFT) & DDLY_MASK)
+#define MSP_DATA_TYPE_BITS(n) (((n) << DTYP_SHIFT) & DTYP_MASK)
+#define MSP_P2_START_MODE_BIT(n) ((n << P2SM_SHIFT) & P2SM_MASK)
+#define MSP_P2_ENABLE_BIT(n) ((n << P2EN_SHIFT) & P2EN_MASK)
+#define MSP_SET_ENDIANNES_BIT(n) ((n << ENDN_SHIFT) & ENDN_MASK)
+#define MSP_FSYNC_POL(n) ((n << TFSPOL_SHIFT) & TFSPOL_MASK)
+#define MSP_DATA_WORD_SWAP(n) ((n << TBSWAP_SHIFT) & TBSWAP_MASK)
+#define MSP_SET_COMPANDING_MODE(n) ((n << DTYP_SHIFT) & \
+ COMPANDING_MODE_MASK)
+#define MSP_SET_FSYNC_IGNORE(n) ((n << FSYNC_SHIFT) & FSYNC_MASK)
+
+/* Flag register */
+#define RX_BUSY BIT(0)
+#define RX_FIFO_EMPTY BIT(1)
+#define RX_FIFO_FULL BIT(2)
+#define TX_BUSY BIT(3)
+#define TX_FIFO_EMPTY BIT(4)
+#define TX_FIFO_FULL BIT(5)
+
+#define RBUSY_SHIFT 0
+#define RFE_SHIFT 1
+#define RFU_SHIFT 2
+#define TBUSY_SHIFT 3
+#define TFE_SHIFT 4
+#define TFU_SHIFT 5
+
+/* Multichannel control register */
+#define RMCEN_SHIFT 0
+#define RMCSF_SHIFT 1
+#define RCMPM_SHIFT 3
+#define TMCEN_SHIFT 5
+#define TNCSF_SHIFT 6
+
+/* Sample rate generator register */
+#define SCKDIV_SHIFT 0
+#define FRWID_SHIFT 10
+#define FRPER_SHIFT 16
+
+#define SCK_DIV_MASK 0x0000003FF
+#define FRAME_WIDTH_BITS(n) (((n) << FRWID_SHIFT) & 0x0000FC00)
+#define FRAME_PERIOD_BITS(n) (((n) << FRPER_SHIFT) & 0x1FFF0000)
+
+/* DMA controller register */
+#define RX_DMA_ENABLE BIT(0)
+#define TX_DMA_ENABLE BIT(1)
+
+#define RDMAE_SHIFT 0
+#define TDMAE_SHIFT 1
+
+/* Interrupt Register */
+#define RX_SERVICE_INT BIT(0)
+#define RX_OVERRUN_ERROR_INT BIT(1)
+#define RX_FSYNC_ERR_INT BIT(2)
+#define RX_FSYNC_INT BIT(3)
+#define TX_SERVICE_INT BIT(4)
+#define TX_UNDERRUN_ERR_INT BIT(5)
+#define TX_FSYNC_ERR_INT BIT(6)
+#define TX_FSYNC_INT BIT(7)
+#define ALL_INT 0x000000ff
+
+/* MSP test control register */
+#define MSP_ITCR_ITEN BIT(0)
+#define MSP_ITCR_TESTFIFO BIT(1)
+
+#define RMCEN_BIT 0
+#define RMCSF_BIT 1
+#define RCMPM_BIT 3
+#define TMCEN_BIT 5
+#define TNCSF_BIT 6
+
+/* Single or dual phase mode */
+enum msp_phase_mode {
+ MSP_SINGLE_PHASE,
+ MSP_DUAL_PHASE
+};
+
+/* Frame length */
+enum msp_frame_length {
+ MSP_FRAME_LEN_1 = 0,
+ MSP_FRAME_LEN_2 = 1,
+ MSP_FRAME_LEN_4 = 3,
+ MSP_FRAME_LEN_8 = 7,
+ MSP_FRAME_LEN_12 = 11,
+ MSP_FRAME_LEN_16 = 15,
+ MSP_FRAME_LEN_20 = 19,
+ MSP_FRAME_LEN_32 = 31,
+ MSP_FRAME_LEN_48 = 47,
+ MSP_FRAME_LEN_64 = 63
+};
+
+/* Element length */
+enum msp_elem_length {
+ MSP_ELEM_LEN_8 = 0,
+ MSP_ELEM_LEN_10 = 1,
+ MSP_ELEM_LEN_12 = 2,
+ MSP_ELEM_LEN_14 = 3,
+ MSP_ELEM_LEN_16 = 4,
+ MSP_ELEM_LEN_20 = 5,
+ MSP_ELEM_LEN_24 = 6,
+ MSP_ELEM_LEN_32 = 7
+};
+
+enum msp_data_xfer_width {
+ MSP_DATA_TRANSFER_WIDTH_BYTE,
+ MSP_DATA_TRANSFER_WIDTH_HALFWORD,
+ MSP_DATA_TRANSFER_WIDTH_WORD
+};
+
+enum msp_frame_sync {
+ MSP_FSYNC_UNIGNORE = 0,
+ MSP_FSYNC_IGNORE = 1,
+};
+
+enum msp_phase2_start_mode {
+ MSP_PHASE2_START_MODE_IMEDIATE,
+ MSP_PHASE2_START_MODE_FSYNC
+};
+
+enum msp_btf {
+ MSP_BTF_MS_BIT_FIRST = 0,
+ MSP_BTF_LS_BIT_FIRST = 1
+};
+
+enum msp_fsync_pol {
+ MSP_FSYNC_POL_ACT_HI = 0,
+ MSP_FSYNC_POL_ACT_LO = 1
+};
+
+/* Data delay (in bit clock cycles) */
+enum msp_delay {
+ MSP_DELAY_0 = 0,
+ MSP_DELAY_1 = 1,
+ MSP_DELAY_2 = 2,
+ MSP_DELAY_3 = 3
+};
+
+/* Configurations of clocks (transmit, receive or sample rate generator) */
+enum msp_edge {
+ MSP_FALLING_EDGE = 0,
+ MSP_RISING_EDGE = 1,
+};
+
+enum msp_hws {
+ MSP_SWAP_NONE = 0,
+ MSP_SWAP_BYTE_PER_WORD = 1,
+ MSP_SWAP_BYTE_PER_HALF_WORD = 2,
+ MSP_SWAP_HALF_WORD_PER_WORD = 3
+};
+
+enum msp_compress_mode {
+ MSP_COMPRESS_MODE_LINEAR = 0,
+ MSP_COMPRESS_MODE_MU_LAW = 2,
+ MSP_COMPRESS_MODE_A_LAW = 3
+};
+
+enum msp_spi_burst_mode {
+ MSP_SPI_BURST_MODE_DISABLE = 0,
+ MSP_SPI_BURST_MODE_ENABLE = 1
+};
+
+enum msp_expand_mode {
+ MSP_EXPAND_MODE_LINEAR = 0,
+ MSP_EXPAND_MODE_LINEAR_SIGNED = 1,
+ MSP_EXPAND_MODE_MU_LAW = 2,
+ MSP_EXPAND_MODE_A_LAW = 3
+};
+
+#define MSP_FRAME_PERIOD_IN_MONO_MODE 256
+#define MSP_FRAME_PERIOD_IN_STEREO_MODE 32
+#define MSP_FRAME_WIDTH_IN_STEREO_MODE 16
+
+enum msp_protocol {
+ MSP_I2S_PROTOCOL,
+ MSP_PCM_PROTOCOL,
+ MSP_PCM_COMPAND_PROTOCOL,
+ MSP_INVALID_PROTOCOL
+};
+
+/*
+ * No of registers to backup during
+ * suspend resume
+ */
+#define MAX_MSP_BACKUP_REGS 36
+
+enum enum_i2s_controller {
+ MSP_0_I2S_CONTROLLER = 0,
+ MSP_1_I2S_CONTROLLER,
+ MSP_2_I2S_CONTROLLER,
+ MSP_3_I2S_CONTROLLER,
+};
+
+enum i2s_direction_t {
+ MSP_DIR_TX = 0x01,
+ MSP_DIR_RX = 0x02,
+};
+
+enum msp_data_size {
+ MSP_DATA_BITS_DEFAULT = -1,
+ MSP_DATA_BITS_8 = 0x00,
+ MSP_DATA_BITS_10,
+ MSP_DATA_BITS_12,
+ MSP_DATA_BITS_14,
+ MSP_DATA_BITS_16,
+ MSP_DATA_BITS_20,
+ MSP_DATA_BITS_24,
+ MSP_DATA_BITS_32,
+};
+
+enum msp_state {
+ MSP_STATE_IDLE = 0,
+ MSP_STATE_CONFIGURED = 1,
+ MSP_STATE_RUNNING = 2,
+};
+
+enum msp_rx_comparison_enable_mode {
+ MSP_COMPARISON_DISABLED = 0,
+ MSP_COMPARISON_NONEQUAL_ENABLED = 2,
+ MSP_COMPARISON_EQUAL_ENABLED = 3
+};
+
+struct msp_multichannel_config {
+ bool rx_multichannel_enable;
+ bool tx_multichannel_enable;
+ enum msp_rx_comparison_enable_mode rx_comparison_enable_mode;
+ u8 padding;
+ u32 comparison_value;
+ u32 comparison_mask;
+ u32 rx_channel_0_enable;
+ u32 rx_channel_1_enable;
+ u32 rx_channel_2_enable;
+ u32 rx_channel_3_enable;
+ u32 tx_channel_0_enable;
+ u32 tx_channel_1_enable;
+ u32 tx_channel_2_enable;
+ u32 tx_channel_3_enable;
+};
+
+struct msp_protdesc {
+ u32 rx_phase_mode;
+ u32 tx_phase_mode;
+ u32 rx_phase2_start_mode;
+ u32 tx_phase2_start_mode;
+ u32 rx_byte_order;
+ u32 tx_byte_order;
+ u32 rx_frame_len_1;
+ u32 rx_frame_len_2;
+ u32 tx_frame_len_1;
+ u32 tx_frame_len_2;
+ u32 rx_elem_len_1;
+ u32 rx_elem_len_2;
+ u32 tx_elem_len_1;
+ u32 tx_elem_len_2;
+ u32 rx_data_delay;
+ u32 tx_data_delay;
+ u32 rx_clk_pol;
+ u32 tx_clk_pol;
+ u32 rx_fsync_pol;
+ u32 tx_fsync_pol;
+ u32 rx_half_word_swap;
+ u32 tx_half_word_swap;
+ u32 compression_mode;
+ u32 expansion_mode;
+ u32 frame_sync_ignore;
+ u32 frame_period;
+ u32 frame_width;
+ u32 clocks_per_frame;
+};
+
+struct i2s_message {
+ enum i2s_direction_t i2s_direction;
+ void *txdata;
+ void *rxdata;
+ size_t txbytes;
+ size_t rxbytes;
+ int dma_flag;
+ int tx_offset;
+ int rx_offset;
+ bool cyclic_dma;
+ dma_addr_t buf_addr;
+ size_t buf_len;
+ size_t period_len;
+};
+
+struct i2s_controller {
+ struct module *owner;
+ unsigned int id;
+ unsigned int class;
+ const struct i2s_algorithm *algo; /* the algorithm to access the bus */
+ void *data;
+ struct mutex bus_lock;
+ struct device dev; /* the controller device */
+ char name[48];
+};
+
+struct ux500_msp_config {
+ unsigned int f_inputclk;
+ unsigned int rx_clk_sel;
+ unsigned int tx_clk_sel;
+ unsigned int srg_clk_sel;
+ unsigned int rx_fsync_pol;
+ unsigned int tx_fsync_pol;
+ unsigned int rx_fsync_sel;
+ unsigned int tx_fsync_sel;
+ unsigned int rx_fifo_config;
+ unsigned int tx_fifo_config;
+ unsigned int spi_clk_mode;
+ unsigned int spi_burst_mode;
+ unsigned int loopback_enable;
+ unsigned int tx_data_enable;
+ unsigned int default_protdesc;
+ struct msp_protdesc protdesc;
+ int multichannel_configured;
+ struct msp_multichannel_config multichannel_config;
+ unsigned int direction;
+ unsigned int protocol;
+ unsigned int frame_freq;
+ unsigned int frame_size;
+ enum msp_data_size data_size;
+ unsigned int def_elem_len;
+ unsigned int iodelay;
+ void (*handler) (void *data);
+ void *tx_callback_data;
+ void *rx_callback_data;
+};
+
+struct ux500_msp {
+ enum enum_i2s_controller id;
+ void __iomem *registers;
+ struct device *dev;
+ struct i2s_controller *i2s_cont;
+ struct stedma40_chan_cfg *dma_cfg_rx;
+ struct stedma40_chan_cfg *dma_cfg_tx;
+ struct dma_chan *tx_pipeid;
+ struct dma_chan *rx_pipeid;
+ enum msp_state msp_state;
+ int (*transfer) (struct ux500_msp *msp, struct i2s_message *message);
+ int (*plat_init) (void);
+ int (*plat_exit) (void);
+ struct timer_list notify_timer;
+ int def_elem_len;
+ unsigned int dir_busy;
+ int loopback_enable;
+ u32 backup_regs[MAX_MSP_BACKUP_REGS];
+ unsigned int f_bitclk;
+};
+
+struct ux500_msp_dma_params {
+ unsigned int data_size;
+ struct stedma40_chan_cfg *dma_cfg;
+};
+
+int ux500_msp_i2s_init_msp(struct platform_device *pdev,
+ struct ux500_msp **msp_p,
+ struct msp_i2s_platform_data *platform_data);
+void ux500_msp_i2s_cleanup_msp(struct platform_device *pdev,
+ struct ux500_msp *msp);
+int ux500_msp_i2s_open(struct ux500_msp *msp, struct ux500_msp_config *config);
+int ux500_msp_i2s_close(struct ux500_msp *msp,
+ unsigned int dir);
+int ux500_msp_i2s_trigger(struct ux500_msp *msp, int cmd,
+ int direction);
+
+#endif
projects / deliverable / linux.git / commitdiff
