--- /dev/null
+/*
+ * linux/sound/soc/m8m/hi6210_i2s.c - I2S IP driver
+ *
+ * Copyright (C) 2015 Linaro, Ltd
+ * Author: Andy Green <andy.green@linaro.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * This driver only deals with S2 interface (BT)
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/jiffies.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <linux/interrupt.h>
+#include <linux/reset.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/mfd/syscon.h>
+#include <linux/reset-controller.h>
+#include <linux/clk.h>
+
+#include "hi6210-i2s.h"
+
+struct hi6210_i2s {
+ struct device *dev;
+ struct reset_control *rc;
+ struct clk *clk[8];
+ int clocks;
+ struct snd_soc_dai_driver dai;
+ void __iomem *base;
+ struct regmap *sysctrl;
+ phys_addr_t base_phys;
+ struct snd_dmaengine_dai_dma_data dma_data[2];
+ int clk_rate;
+ spinlock_t lock;
+ int rate;
+ int format;
+ u8 bits;
+ u8 channels;
+ u8 id;
+ u8 channel_length;
+ u8 use;
+ u32 master:1;
+ u32 status:1;
+};
+
+#define SC_PERIPH_CLKEN1 0x210
+#define SC_PERIPH_CLKDIS1 0x214
+
+#define SC_PERIPH_CLKEN3 0x230
+#define SC_PERIPH_CLKDIS3 0x234
+
+#define SC_PERIPH_CLKEN12 0x270
+#define SC_PERIPH_CLKDIS12 0x274
+
+#define SC_PERIPH_RSTEN1 0x310
+#define SC_PERIPH_RSTDIS1 0x314
+#define SC_PERIPH_RSTSTAT1 0x318
+
+#define SC_PERIPH_RSTEN2 0x320
+#define SC_PERIPH_RSTDIS2 0x324
+#define SC_PERIPH_RSTSTAT2 0x328
+
+#define SOC_PMCTRL_BBPPLLALIAS 0x48
+
+enum {
+ CLK_DACODEC,
+ CLK_I2S_BASE,
+};
+
+static inline void hi6210_write_reg(struct hi6210_i2s *i2s, int reg, u32 val)
+{
+ writel(val, i2s->base + reg);
+}
+
+static inline u32 hi6210_read_reg(struct hi6210_i2s *i2s, int reg)
+{
+ return readl(i2s->base + reg);
+}
+
+int hi6210_i2s_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *cpu_dai)
+{
+ struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+ int ret, n;
+ u32 val;
+
+ /* deassert reset on ABB */
+ regmap_read(i2s->sysctrl, SC_PERIPH_RSTSTAT2, &val);
+ if (val & BIT(4))
+ regmap_write(i2s->sysctrl, SC_PERIPH_RSTDIS2, BIT(4));
+
+ for (n = 0; n < i2s->clocks; n++) {
+ ret = clk_prepare_enable(i2s->clk[n]);
+ if (ret) {
+ while (n--)
+ clk_disable_unprepare(i2s->clk[n]);
+ return ret;
+ }
+ }
+
+ ret = clk_set_rate(i2s->clk[CLK_I2S_BASE], 49152000);
+ if (ret) {
+ dev_err(i2s->dev, "%s: setting 49.152MHz base rate failed %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ /* enable clock before frequency division */
+ regmap_write(i2s->sysctrl, SC_PERIPH_CLKEN12, BIT(9));
+
+ /* enable codec working clock / == "codec bus clock" */
+ regmap_write(i2s->sysctrl, SC_PERIPH_CLKEN1, BIT(5));
+
+ /* deassert reset on codec / interface clock / working clock */
+ regmap_write(i2s->sysctrl, SC_PERIPH_RSTEN1, BIT(5));
+ regmap_write(i2s->sysctrl, SC_PERIPH_RSTDIS1, BIT(5));
+
+ /* not interested in i2s irqs */
+ val = hi6210_read_reg(i2s, HII2S_CODEC_IRQ_MASK);
+ val |= 0x3f;
+ hi6210_write_reg(i2s, HII2S_CODEC_IRQ_MASK, val);
+
+
+ /* reset the stereo downlink fifo */
+ val = hi6210_read_reg(i2s, HII2S_APB_AFIFO_CFG_1);
+ val |= (BIT(5) | BIT(4));
+ hi6210_write_reg(i2s, HII2S_APB_AFIFO_CFG_1, val);
+
+ val = hi6210_read_reg(i2s, HII2S_APB_AFIFO_CFG_1);
+ val &= ~(BIT(5) | BIT(4));
+ hi6210_write_reg(i2s, HII2S_APB_AFIFO_CFG_1, val);
+
+
+ val = hi6210_read_reg(i2s, HII2S_SW_RST_N);
+ val &= ~(HII2S_SW_RST_N__ST_DL_WORDLEN_MASK <<
+ HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT);
+ val |= (HII2S_BITS_16 << HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT);
+ hi6210_write_reg(i2s, HII2S_SW_RST_N, val);
+
+ val = hi6210_read_reg(i2s, HII2S_MISC_CFG);
+ /* mux 11/12 = APB not i2s */
+ val &= ~HII2S_MISC_CFG__ST_DL_TEST_SEL;
+ /* BT R ch 0 = mixer op of DACR ch */
+ val &= ~HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL;
+ val &= ~HII2S_MISC_CFG__S2_DOUT_TEST_SEL;
+
+ val |= HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL;
+ /* BT L ch = 1 = mux 7 = "mixer output of DACL */
+ val |= HII2S_MISC_CFG__S2_DOUT_TEST_SEL;
+ hi6210_write_reg(i2s, HII2S_MISC_CFG, val);
+
+ val = hi6210_read_reg(i2s, HII2S_SW_RST_N);
+ val |= HII2S_SW_RST_N__SW_RST_N;
+ hi6210_write_reg(i2s, HII2S_SW_RST_N, val);
+
+ return 0;
+}
+void hi6210_i2s_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *cpu_dai)
+{
+ struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+ int n;
+
+ for (n = 0; n < i2s->clocks; n++)
+ clk_disable_unprepare(i2s->clk[n]);
+
+ regmap_write(i2s->sysctrl, SC_PERIPH_RSTEN1, BIT(5));
+}
+
+static void hi6210_i2s_txctrl(struct snd_soc_dai *cpu_dai, int on)
+{
+ struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+ u32 val;
+
+ spin_lock(&i2s->lock);
+ if (on) {
+ /* enable S2 TX */
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val |= HII2S_I2S_CFG__S2_IF_TX_EN;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ } else {
+ /* disable S2 TX */
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val &= ~HII2S_I2S_CFG__S2_IF_TX_EN;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ }
+ spin_unlock(&i2s->lock);
+}
+
+static void hi6210_i2s_rxctrl(struct snd_soc_dai *cpu_dai, int on)
+{
+ struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+ u32 val;
+
+ spin_lock(&i2s->lock);
+ if (on) {
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val |= HII2S_I2S_CFG__S2_IF_RX_EN;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ } else {
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val &= ~HII2S_I2S_CFG__S2_IF_RX_EN;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ }
+ spin_unlock(&i2s->lock);
+}
+
+static int hi6210_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
+{
+ struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+
+ /*
+ * We don't actually set the hardware until the hw_params
+ * call, but we need to validate the user input here.
+ */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ case SND_SOC_DAIFMT_LEFT_J:
+ case SND_SOC_DAIFMT_RIGHT_J:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ i2s->format = fmt;
+ i2s->master = (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) ==
+ SND_SOC_DAIFMT_CBS_CFS;
+
+ return 0;
+}
+
+static int hi6210_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *cpu_dai)
+{
+ struct hi6210_i2s *i2s = dev_get_drvdata(cpu_dai->dev);
+ u32 bits = 0, rate = 0, signed_data = 0, fmt = 0;
+ u32 val;
+ struct snd_dmaengine_dai_dma_data *dma_data;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_U16_LE:
+ signed_data = HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
+ /* fallthru */
+ case SNDRV_PCM_FORMAT_S16_LE:
+ bits = HII2S_BITS_16;
+ break;
+ case SNDRV_PCM_FORMAT_U24_LE:
+ signed_data = HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
+ /* fallthru */
+ case SNDRV_PCM_FORMAT_S24_LE:
+ bits = HII2S_BITS_24;
+ break;
+ default:
+ dev_err(cpu_dai->dev, "Bad format\n");
+ return -EINVAL;
+ }
+
+
+ switch (params_rate(params)) {
+ case 8000:
+ rate = HII2S_FS_RATE_8KHZ;
+ break;
+ case 16000:
+ rate = HII2S_FS_RATE_16KHZ;
+ break;
+ case 32000:
+ rate = HII2S_FS_RATE_32KHZ;
+ break;
+ case 48000:
+ rate = HII2S_FS_RATE_48KHZ;
+ break;
+ case 96000:
+ rate = HII2S_FS_RATE_96KHZ;
+ break;
+ case 192000:
+ rate = HII2S_FS_RATE_192KHZ;
+ break;
+ default:
+ dev_err(cpu_dai->dev, "Bad rate: %d\n", params_rate(params));
+ return -EINVAL;
+ }
+
+ if (!(params_channels(params))) {
+ dev_err(cpu_dai->dev, "Bad channels\n");
+ return -EINVAL;
+ }
+
+ dma_data = snd_soc_dai_get_dma_data(cpu_dai, substream);
+
+ switch (bits) {
+ case HII2S_BITS_24:
+ i2s->bits = 32;
+ dma_data->addr_width = 3;
+ break;
+ default:
+ i2s->bits = 16;
+ dma_data->addr_width = 2;
+ }
+ i2s->rate = params_rate(params);
+ i2s->channels = params_channels(params);
+ i2s->channel_length = i2s->channels * i2s->bits;
+
+ val = hi6210_read_reg(i2s, HII2S_ST_DL_FIFO_TH_CFG);
+ val &= ~((HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_MASK <<
+ HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT) |
+ (HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_MASK <<
+ HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT) |
+ (HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_MASK <<
+ HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT) |
+ (HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_MASK <<
+ HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT));
+ val |= ((16 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT) |
+ (30 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT) |
+ (16 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT) |
+ (30 << HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT));
+ hi6210_write_reg(i2s, HII2S_ST_DL_FIFO_TH_CFG, val);
+
+
+ val = hi6210_read_reg(i2s, HII2S_IF_CLK_EN_CFG);
+ val |= (BIT(19) | BIT(18) | BIT(17) |
+ HII2S_IF_CLK_EN_CFG__S2_IF_CLK_EN |
+ HII2S_IF_CLK_EN_CFG__S2_OL_MIXER_EN |
+ HII2S_IF_CLK_EN_CFG__S2_OL_SRC_EN |
+ HII2S_IF_CLK_EN_CFG__ST_DL_R_EN |
+ HII2S_IF_CLK_EN_CFG__ST_DL_L_EN);
+ hi6210_write_reg(i2s, HII2S_IF_CLK_EN_CFG, val);
+
+
+ val = hi6210_read_reg(i2s, HII2S_DIG_FILTER_CLK_EN_CFG);
+ val &= ~(HII2S_DIG_FILTER_CLK_EN_CFG__DACR_SDM_EN |
+ HII2S_DIG_FILTER_CLK_EN_CFG__DACR_HBF2I_EN |
+ HII2S_DIG_FILTER_CLK_EN_CFG__DACR_AGC_EN |
+ HII2S_DIG_FILTER_CLK_EN_CFG__DACL_SDM_EN |
+ HII2S_DIG_FILTER_CLK_EN_CFG__DACL_HBF2I_EN |
+ HII2S_DIG_FILTER_CLK_EN_CFG__DACL_AGC_EN);
+ val |= (HII2S_DIG_FILTER_CLK_EN_CFG__DACR_MIXER_EN |
+ HII2S_DIG_FILTER_CLK_EN_CFG__DACL_MIXER_EN);
+ hi6210_write_reg(i2s, HII2S_DIG_FILTER_CLK_EN_CFG, val);
+
+
+ val = hi6210_read_reg(i2s, HII2S_DIG_FILTER_MODULE_CFG);
+ val &= ~(HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN2_MUTE |
+ HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN2_MUTE);
+ hi6210_write_reg(i2s, HII2S_DIG_FILTER_MODULE_CFG, val);
+
+ val = hi6210_read_reg(i2s, HII2S_MUX_TOP_MODULE_CFG);
+ val &= ~(HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN1_MUTE |
+ HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN2_MUTE |
+ HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN1_MUTE |
+ HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN2_MUTE);
+ hi6210_write_reg(i2s, HII2S_MUX_TOP_MODULE_CFG, val);
+
+
+ switch (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ i2s->master = false;
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val |= HII2S_I2S_CFG__S2_MST_SLV;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ i2s->master = true;
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val &= ~HII2S_I2S_CFG__S2_MST_SLV;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ break;
+ default:
+ WARN_ONCE(1, "Invalid i2s->fmt MASTER_MASK. This shouldn't happen\n");
+ }
+
+ switch (i2s->format & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ fmt = HII2S_FORMAT_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ fmt = HII2S_FORMAT_LEFT_JUST;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ fmt = HII2S_FORMAT_RIGHT_JUST;
+ break;
+ default:
+ WARN_ONCE(1, "Invalid i2s->fmt FORMAT_MASK. This shouldn't happen\n");
+ }
+
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val &= ~(HII2S_I2S_CFG__S2_FUNC_MODE_MASK <<
+ HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT);
+ val |= fmt << HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+
+
+ val = hi6210_read_reg(i2s, HII2S_CLK_SEL);
+ val &= ~(HII2S_CLK_SEL__I2S_BT_FM_SEL | /* BT gets the I2S */
+ HII2S_CLK_SEL__EXT_12_288MHZ_SEL);
+ hi6210_write_reg(i2s, HII2S_CLK_SEL, val);
+
+ dma_data->maxburst = 2;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dma_data->addr = i2s->base_phys + HII2S_ST_DL_CHANNEL;
+ else
+ dma_data->addr = i2s->base_phys + HII2S_STEREO_UPLINK_CHANNEL;
+
+ switch (i2s->channels) {
+ case 1:
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val |= HII2S_I2S_CFG__S2_FRAME_MODE;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ break;
+ default:
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val &= ~HII2S_I2S_CFG__S2_FRAME_MODE;
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+ }
+
+ /* clear loopback, set signed type and word length */
+ val = hi6210_read_reg(i2s, HII2S_I2S_CFG);
+ val &= ~HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT;
+ val &= ~(HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_MASK <<
+ HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT);
+ val &= ~(HII2S_I2S_CFG__S2_DIRECT_LOOP_MASK <<
+ HII2S_I2S_CFG__S2_DIRECT_LOOP_SHIFT);
+ val |= signed_data;
+ val |= (bits << HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT);
+ hi6210_write_reg(i2s, HII2S_I2S_CFG, val);
+
+
+ if (!i2s->master)
+ return 0;
+
+ /* set DAC and related units to correct rate */
+ val = hi6210_read_reg(i2s, HII2S_FS_CFG);
+ val &= ~(HII2S_FS_CFG__FS_S2_MASK << HII2S_FS_CFG__FS_S2_SHIFT);
+ val &= ~(HII2S_FS_CFG__FS_DACLR_MASK << HII2S_FS_CFG__FS_DACLR_SHIFT);
+ val &= ~(HII2S_FS_CFG__FS_ST_DL_R_MASK <<
+ HII2S_FS_CFG__FS_ST_DL_R_SHIFT);
+ val &= ~(HII2S_FS_CFG__FS_ST_DL_L_MASK <<
+ HII2S_FS_CFG__FS_ST_DL_L_SHIFT);
+ val |= (rate << HII2S_FS_CFG__FS_S2_SHIFT);
+ val |= (rate << HII2S_FS_CFG__FS_DACLR_SHIFT);
+ val |= (rate << HII2S_FS_CFG__FS_ST_DL_R_SHIFT);
+ val |= (rate << HII2S_FS_CFG__FS_ST_DL_L_SHIFT);
+ hi6210_write_reg(i2s, HII2S_FS_CFG, val);
+
+ return 0;
+}
+
+static int hi6210_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *cpu_dai)
+{
+ pr_debug("%s\n", __func__);
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ hi6210_i2s_rxctrl(cpu_dai, 1);
+ else
+ hi6210_i2s_txctrl(cpu_dai, 1);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ hi6210_i2s_rxctrl(cpu_dai, 0);
+ else
+ hi6210_i2s_txctrl(cpu_dai, 0);
+ break;
+ default:
+ dev_err(cpu_dai->dev, "uknown cmd\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int hi6210_i2s_dai_probe(struct snd_soc_dai *dai)
+{
+ struct hi6210_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai,
+ &i2s->dma_data[SNDRV_PCM_STREAM_PLAYBACK],
+ &i2s->dma_data[SNDRV_PCM_STREAM_CAPTURE]);
+
+ return 0;
+}
+
+
+static struct snd_soc_dai_ops hi6210_i2s_dai_ops = {
+ .trigger = hi6210_i2s_trigger,
+ .hw_params = hi6210_i2s_hw_params,
+ .set_fmt = hi6210_i2s_set_fmt,
+ .startup = hi6210_i2s_startup,
+ .shutdown = hi6210_i2s_shutdown,
+};
+
+struct snd_soc_dai_driver hi6210_i2s_dai_init = {
+ .probe = hi6210_i2s_dai_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_U16_LE,
+ .rates = SNDRV_PCM_RATE_48000,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_U16_LE,
+ .rates = SNDRV_PCM_RATE_48000,
+ },
+ .ops = &hi6210_i2s_dai_ops,
+};
+
+static const struct snd_soc_component_driver hi6210_i2s_i2s_comp = {
+ .name = "hi6210_i2s-i2s",
+};
+
+static int hi6210_i2s_probe(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+ struct hi6210_i2s *i2s;
+ struct resource *res;
+ int ret;
+
+ i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL);
+ if (!i2s)
+ return -ENOMEM;
+
+ i2s->dev = dev;
+ spin_lock_init(&i2s->lock);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ i2s->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(i2s->base))
+ return PTR_ERR(i2s->base);
+
+ i2s->base_phys = (phys_addr_t)res->start;
+ i2s->dai = hi6210_i2s_dai_init;
+
+ dev_set_drvdata(&pdev->dev, i2s);
+
+ i2s->sysctrl = syscon_regmap_lookup_by_phandle(node,
+ "hisilicon,sysctrl-syscon");
+ if (IS_ERR(i2s->sysctrl))
+ return PTR_ERR(i2s->sysctrl);
+
+ i2s->clk[CLK_DACODEC] = devm_clk_get(&pdev->dev, "dacodec");
+ if (IS_ERR_OR_NULL(i2s->clk[CLK_DACODEC]))
+ return PTR_ERR(i2s->clk[CLK_DACODEC]);
+ i2s->clocks++;
+
+ i2s->clk[CLK_I2S_BASE] = devm_clk_get(&pdev->dev, "i2s-base");
+ if (IS_ERR_OR_NULL(i2s->clk[CLK_I2S_BASE]))
+ return PTR_ERR(i2s->clk[CLK_I2S_BASE]);
+ i2s->clocks++;
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret)
+ return ret;
+
+ ret = snd_soc_register_component(&pdev->dev, &hi6210_i2s_i2s_comp,
+ &i2s->dai, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register dai\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int hi6210_i2s_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_component(&pdev->dev);
+ dev_set_drvdata(&pdev->dev, NULL);
+
+ return 0;
+}
+
+static const struct of_device_id hi6210_i2s_dt_ids[] = {
+ { .compatible = "hisilicon,hi6210-i2s" },
+ { /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, hi6210_i2s_dt_ids);
+
+static struct platform_driver hi6210_i2s_driver = {
+ .probe = hi6210_i2s_probe,
+ .remove = hi6210_i2s_remove,
+ .driver = {
+ .name = "hi6210_i2s",
+ .of_match_table = hi6210_i2s_dt_ids,
+ },
+};
+
+module_platform_driver(hi6210_i2s_driver);
+
+MODULE_DESCRIPTION("Hisilicon HI6210 I2S driver");
+MODULE_AUTHOR("Andy Green <andy.green@linaro.org>");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * linux/sound/soc/hisilicon/hi6210-i2s.h
+ *
+ * Copyright (C) 2015 Linaro, Ltd
+ * Author: Andy Green <andy.green@linaro.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Note at least on 6220, S2 == BT, S1 == Digital FM Radio IF
+ */
+
+#ifndef _HI6210_I2S_H
+#define _HI6210_I2S_H
+
+#define HII2S_SW_RST_N 0
+
+#define HII2S_SW_RST_N__STEREO_UPLINK_WORDLEN_SHIFT 28
+#define HII2S_SW_RST_N__STEREO_UPLINK_WORDLEN_MASK 3
+#define HII2S_SW_RST_N__THIRDMD_UPLINK_WORDLEN_SHIFT 26
+#define HII2S_SW_RST_N__THIRDMD_UPLINK_WORDLEN_MASK 3
+#define HII2S_SW_RST_N__VOICE_UPLINK_WORDLEN_SHIFT 24
+#define HII2S_SW_RST_N__VOICE_UPLINK_WORDLEN_MASK 3
+#define HII2S_SW_RST_N__ST_DL_WORDLEN_SHIFT 20
+#define HII2S_SW_RST_N__ST_DL_WORDLEN_MASK 3
+#define HII2S_SW_RST_N__THIRDMD_DLINK_WORDLEN_SHIFT 18
+#define HII2S_SW_RST_N__THIRDMD_DLINK_WORDLEN_MASK 3
+#define HII2S_SW_RST_N__VOICE_DLINK_WORDLEN_SHIFT 16
+#define HII2S_SW_RST_N__VOICE_DLINK_WORDLEN_MASK 3
+
+#define HII2S_SW_RST_N__SW_RST_N BIT(0)
+
+enum hi6210_bits {
+ HII2S_BITS_16,
+ HII2S_BITS_18,
+ HII2S_BITS_20,
+ HII2S_BITS_24,
+};
+
+
+#define HII2S_IF_CLK_EN_CFG 4
+
+#define HII2S_IF_CLK_EN_CFG__THIRDMD_UPLINK_EN BIT(25)
+#define HII2S_IF_CLK_EN_CFG__THIRDMD_DLINK_EN BIT(24)
+#define HII2S_IF_CLK_EN_CFG__S3_IF_CLK_EN BIT(20)
+#define HII2S_IF_CLK_EN_CFG__S2_IF_CLK_EN BIT(16)
+#define HII2S_IF_CLK_EN_CFG__S2_OL_MIXER_EN BIT(15)
+#define HII2S_IF_CLK_EN_CFG__S2_OL_SRC_EN BIT(14)
+#define HII2S_IF_CLK_EN_CFG__S2_IR_PGA_EN BIT(13)
+#define HII2S_IF_CLK_EN_CFG__S2_IL_PGA_EN BIT(12)
+#define HII2S_IF_CLK_EN_CFG__S1_IR_PGA_EN BIT(10)
+#define HII2S_IF_CLK_EN_CFG__S1_IL_PGA_EN BIT(9)
+#define HII2S_IF_CLK_EN_CFG__S1_IF_CLK_EN BIT(8)
+#define HII2S_IF_CLK_EN_CFG__VOICE_DLINK_SRC_EN BIT(7)
+#define HII2S_IF_CLK_EN_CFG__VOICE_DLINK_EN BIT(6)
+#define HII2S_IF_CLK_EN_CFG__ST_DL_R_EN BIT(5)
+#define HII2S_IF_CLK_EN_CFG__ST_DL_L_EN BIT(4)
+#define HII2S_IF_CLK_EN_CFG__VOICE_UPLINK_R_EN BIT(3)
+#define HII2S_IF_CLK_EN_CFG__VOICE_UPLINK_L_EN BIT(2)
+#define HII2S_IF_CLK_EN_CFG__STEREO_UPLINK_R_EN BIT(1)
+#define HII2S_IF_CLK_EN_CFG__STEREO_UPLINK_L_EN BIT(0)
+
+#define HII2S_DIG_FILTER_CLK_EN_CFG 8
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_SDM_EN BIT(30)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_HBF2I_EN BIT(28)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_MIXER_EN BIT(25)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACR_AGC_EN BIT(24)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_SDM_EN BIT(22)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_HBF2I_EN BIT(20)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_MIXER_EN BIT(17)
+#define HII2S_DIG_FILTER_CLK_EN_CFG__DACL_AGC_EN BIT(16)
+
+#define HII2S_FS_CFG 0xc
+
+#define HII2S_FS_CFG__FS_S2_SHIFT 28
+#define HII2S_FS_CFG__FS_S2_MASK 7
+#define HII2S_FS_CFG__FS_S1_SHIFT 24
+#define HII2S_FS_CFG__FS_S1_MASK 7
+#define HII2S_FS_CFG__FS_ADCLR_SHIFT 20
+#define HII2S_FS_CFG__FS_ADCLR_MASK 7
+#define HII2S_FS_CFG__FS_DACLR_SHIFT 16
+#define HII2S_FS_CFG__FS_DACLR_MASK 7
+#define HII2S_FS_CFG__FS_ST_DL_R_SHIFT 8
+#define HII2S_FS_CFG__FS_ST_DL_R_MASK 7
+#define HII2S_FS_CFG__FS_ST_DL_L_SHIFT 4
+#define HII2S_FS_CFG__FS_ST_DL_L_MASK 7
+#define HII2S_FS_CFG__FS_VOICE_DLINK_SHIFT 0
+#define HII2S_FS_CFG__FS_VOICE_DLINK_MASK 7
+
+enum hi6210_i2s_rates {
+ HII2S_FS_RATE_8KHZ = 0,
+ HII2S_FS_RATE_16KHZ = 1,
+ HII2S_FS_RATE_32KHZ = 2,
+ HII2S_FS_RATE_48KHZ = 4,
+ HII2S_FS_RATE_96KHZ = 5,
+ HII2S_FS_RATE_192KHZ = 6,
+};
+
+#define HII2S_I2S_CFG 0x10
+
+#define HII2S_I2S_CFG__S2_IF_TX_EN BIT(31)
+#define HII2S_I2S_CFG__S2_IF_RX_EN BIT(30)
+#define HII2S_I2S_CFG__S2_FRAME_MODE BIT(29)
+#define HII2S_I2S_CFG__S2_MST_SLV BIT(28)
+#define HII2S_I2S_CFG__S2_LRCK_MODE BIT(27)
+#define HII2S_I2S_CFG__S2_CHNNL_MODE BIT(26)
+#define HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_SHIFT 24
+#define HII2S_I2S_CFG__S2_CODEC_IO_WORDLENGTH_MASK 3
+#define HII2S_I2S_CFG__S2_DIRECT_LOOP_SHIFT 22
+#define HII2S_I2S_CFG__S2_DIRECT_LOOP_MASK 3
+#define HII2S_I2S_CFG__S2_TX_CLK_SEL BIT(21)
+#define HII2S_I2S_CFG__S2_RX_CLK_SEL BIT(20)
+#define HII2S_I2S_CFG__S2_CODEC_DATA_FORMAT BIT(19)
+#define HII2S_I2S_CFG__S2_FUNC_MODE_SHIFT 16
+#define HII2S_I2S_CFG__S2_FUNC_MODE_MASK 7
+#define HII2S_I2S_CFG__S1_IF_TX_EN BIT(15)
+#define HII2S_I2S_CFG__S1_IF_RX_EN BIT(14)
+#define HII2S_I2S_CFG__S1_FRAME_MODE BIT(13)
+#define HII2S_I2S_CFG__S1_MST_SLV BIT(12)
+#define HII2S_I2S_CFG__S1_LRCK_MODE BIT(11)
+#define HII2S_I2S_CFG__S1_CHNNL_MODE BIT(10)
+#define HII2S_I2S_CFG__S1_CODEC_IO_WORDLENGTH_SHIFT 8
+#define HII2S_I2S_CFG__S1_CODEC_IO_WORDLENGTH_MASK 3
+#define HII2S_I2S_CFG__S1_DIRECT_LOOP_SHIFT 6
+#define HII2S_I2S_CFG__S1_DIRECT_LOOP_MASK 3
+#define HII2S_I2S_CFG__S1_TX_CLK_SEL BIT(5)
+#define HII2S_I2S_CFG__S1_RX_CLK_SEL BIT(4)
+#define HII2S_I2S_CFG__S1_CODEC_DATA_FORMAT BIT(3)
+#define HII2S_I2S_CFG__S1_FUNC_MODE_SHIFT 0
+#define HII2S_I2S_CFG__S1_FUNC_MODE_MASK 7
+
+enum hi6210_i2s_formats {
+ HII2S_FORMAT_I2S,
+ HII2S_FORMAT_PCM_STD,
+ HII2S_FORMAT_PCM_USER,
+ HII2S_FORMAT_LEFT_JUST,
+ HII2S_FORMAT_RIGHT_JUST,
+};
+
+#define HII2S_DIG_FILTER_MODULE_CFG 0x14
+
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_GAIN_SHIFT 28
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_GAIN_MASK 3
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN4_MUTE BIT(27)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN3_MUTE BIT(26)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN2_MUTE BIT(25)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACR_MIXER_IN1_MUTE BIT(24)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_GAIN_SHIFT 20
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_GAIN_MASK 3
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN4_MUTE BIT(19)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN3_MUTE BIT(18)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN2_MUTE BIT(17)
+#define HII2S_DIG_FILTER_MODULE_CFG__DACL_MIXER_IN1_MUTE BIT(16)
+#define HII2S_DIG_FILTER_MODULE_CFG__SW_DACR_SDM_DITHER BIT(9)
+#define HII2S_DIG_FILTER_MODULE_CFG__SW_DACL_SDM_DITHER BIT(8)
+#define HII2S_DIG_FILTER_MODULE_CFG__LM_CODEC_DAC2ADC_SHIFT 4
+#define HII2S_DIG_FILTER_MODULE_CFG__LM_CODEC_DAC2ADC_MASK 7
+#define HII2S_DIG_FILTER_MODULE_CFG__RM_CODEC_DAC2ADC_SHIFT 0
+#define HII2S_DIG_FILTER_MODULE_CFG__RM_CODEC_DAC2ADC_MASK 7
+
+enum hi6210_gains {
+ HII2S_GAIN_100PC,
+ HII2S_GAIN_50PC,
+ HII2S_GAIN_25PC,
+};
+
+#define HII2S_MUX_TOP_MODULE_CFG 0x18
+
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_GAIN_SHIFT 14
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_GAIN_MASK 3
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN2_MUTE BIT(13)
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_MIXER_IN1_MUTE BIT(12)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_GAIN_SHIFT 10
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_GAIN_MASK 3
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN2_MUTE BIT(9)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_MIXER_IN1_MUTE BIT(8)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_SRC_RDY BIT(6)
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_SRC_MODE_SHIFT 4
+#define HII2S_MUX_TOP_MODULE_CFG__S2_OL_SRC_MODE_MASK 3
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_SRC_RDY BIT(3)
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_SRC_MODE_SHIFT 0
+#define HII2S_MUX_TOP_MODULE_CFG__VOICE_DLINK_SRC_MODE_MASK 7
+
+enum hi6210_s2_src_mode {
+ HII2S_S2_SRC_MODE_3,
+ HII2S_S2_SRC_MODE_12,
+ HII2S_S2_SRC_MODE_6,
+ HII2S_S2_SRC_MODE_2,
+};
+
+enum hi6210_voice_dlink_src_mode {
+ HII2S_VOICE_DL_SRC_MODE_12 = 1,
+ HII2S_VOICE_DL_SRC_MODE_6,
+ HII2S_VOICE_DL_SRC_MODE_2,
+ HII2S_VOICE_DL_SRC_MODE_3,
+};
+
+#define HII2S_ADC_PGA_CFG 0x1c
+#define HII2S_S1_INPUT_PGA_CFG 0x20
+#define HII2S_S2_INPUT_PGA_CFG 0x24
+#define HII2S_ST_DL_PGA_CFG 0x28
+#define HII2S_VOICE_SIDETONE_DLINK_PGA_CFG 0x2c
+#define HII2S_APB_AFIFO_CFG_1 0x30
+#define HII2S_APB_AFIFO_CFG_2 0x34
+#define HII2S_ST_DL_FIFO_TH_CFG 0x38
+
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_SHIFT 24
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AEMPTY_MASK 0x1f
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_SHIFT 16
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_R_AFULL_MASK 0x1f
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_SHIFT 8
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AEMPTY_MASK 0x1f
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_SHIFT 0
+#define HII2S_ST_DL_FIFO_TH_CFG__ST_DL_L_AFULL_MASK 0x1f
+
+#define HII2S_STEREO_UPLINK_FIFO_TH_CFG 0x3c
+#define HII2S_VOICE_UPLINK_FIFO_TH_CFG 0x40
+#define HII2S_CODEC_IRQ_MASK 0x44
+#define HII2S_CODEC_IRQ 0x48
+#define HII2S_DACL_AGC_CFG_1 0x4c
+#define HII2S_DACL_AGC_CFG_2 0x50
+#define HII2S_DACR_AGC_CFG_1 0x54
+#define HII2S_DACR_AGC_CFG_2 0x58
+#define HII2S_DMIC_SIF_CFG 0x5c
+#define HII2S_MISC_CFG 0x60
+
+#define HII2S_MISC_CFG__THIRDMD_DLINK_TEST_SEL BIT(17)
+#define HII2S_MISC_CFG__THIRDMD_DLINK_DIN_SEL BIT(16)
+#define HII2S_MISC_CFG__S3_DOUT_RIGHT_SEL BIT(14)
+#define HII2S_MISC_CFG__S3_DOUT_LEFT_SEL BIT(13)
+#define HII2S_MISC_CFG__S3_DIN_TEST_SEL BIT(12)
+#define HII2S_MISC_CFG__VOICE_DLINK_SRC_UP_DOUT_VLD_SEL BIT(8)
+#define HII2S_MISC_CFG__VOICE_DLINK_TEST_SEL BIT(7)
+#define HII2S_MISC_CFG__VOICE_DLINK_DIN_SEL BIT(6)
+#define HII2S_MISC_CFG__ST_DL_TEST_SEL BIT(4)
+#define HII2S_MISC_CFG__S2_DOUT_RIGHT_SEL BIT(3)
+#define HII2S_MISC_CFG__S2_DOUT_TEST_SEL BIT(2)
+#define HII2S_MISC_CFG__S1_DOUT_TEST_SEL BIT(1)
+#define HII2S_MISC_CFG__S2_DOUT_LEFT_SEL BIT(0)
+
+#define HII2S_S2_SRC_CFG 0x64
+#define HII2S_MEM_CFG 0x68
+#define HII2S_THIRDMD_PCM_PGA_CFG 0x6c
+#define HII2S_THIRD_MODEM_FIFO_TH 0x70
+#define HII2S_S3_ANTI_FREQ_JITTER_TX_INC_CNT 0x74
+#define HII2S_S3_ANTI_FREQ_JITTER_TX_DEC_CNT 0x78
+#define HII2S_S3_ANTI_FREQ_JITTER_RX_INC_CNT 0x7c
+#define HII2S_S3_ANTI_FREQ_JITTER_RX_DEC_CNT 0x80
+#define HII2S_ANTI_FREQ_JITTER_EN 0x84
+#define HII2S_CLK_SEL 0x88
+
+/* 0 = BT owns the i2s */
+#define HII2S_CLK_SEL__I2S_BT_FM_SEL BIT(0)
+/* 0 = internal source, 1 = ext */
+#define HII2S_CLK_SEL__EXT_12_288MHZ_SEL BIT(1)
+
+
+#define HII2S_THIRDMD_DLINK_CHANNEL 0xe8
+#define HII2S_THIRDMD_ULINK_CHANNEL 0xec
+#define HII2S_VOICE_DLINK_CHANNEL 0xf0
+
+/* shovel data in here for playback */
+#define HII2S_ST_DL_CHANNEL 0xf4
+#define HII2S_STEREO_UPLINK_CHANNEL 0xf8
+#define HII2S_VOICE_UPLINK_CHANNEL 0xfc
+
+#endif/* _HI6210_I2S_H */
projects / mirror_ubuntu-bionic-kernel.git / commitdiff