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![Kuninori Morimoto](/assets/img/avatar_default.png)
ALSA SoC merges DAI call backs into .ops. This patch merge these into one. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87r0od9m6i.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
885 lines
21 KiB
C
885 lines
21 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* sound/soc/rockchip/rockchip_i2s.c
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*
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* ALSA SoC Audio Layer - Rockchip I2S Controller driver
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*
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* Copyright (c) 2014 Rockchip Electronics Co. Ltd.
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* Author: Jianqun <jay.xu@rock-chips.com>
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*/
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#include <linux/module.h>
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#include <linux/mfd/syscon.h>
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#include <linux/delay.h>
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#include <linux/of_gpio.h>
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#include <linux/of_device.h>
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#include <linux/clk.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/spinlock.h>
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#include <sound/pcm_params.h>
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#include <sound/dmaengine_pcm.h>
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#include "rockchip_i2s.h"
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#define DRV_NAME "rockchip-i2s"
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struct rk_i2s_pins {
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u32 reg_offset;
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u32 shift;
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};
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struct rk_i2s_dev {
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struct device *dev;
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struct clk *hclk;
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struct clk *mclk;
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struct snd_dmaengine_dai_dma_data capture_dma_data;
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struct snd_dmaengine_dai_dma_data playback_dma_data;
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struct regmap *regmap;
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struct regmap *grf;
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bool has_capture;
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bool has_playback;
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/*
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* Used to indicate the tx/rx status.
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* I2S controller hopes to start the tx and rx together,
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* also to stop them when they are both try to stop.
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*/
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bool tx_start;
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bool rx_start;
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bool is_master_mode;
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const struct rk_i2s_pins *pins;
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unsigned int bclk_ratio;
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spinlock_t lock; /* tx/rx lock */
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struct pinctrl *pinctrl;
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struct pinctrl_state *bclk_on;
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struct pinctrl_state *bclk_off;
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};
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static int i2s_pinctrl_select_bclk_on(struct rk_i2s_dev *i2s)
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{
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int ret = 0;
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if (!IS_ERR(i2s->pinctrl) && !IS_ERR_OR_NULL(i2s->bclk_on))
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ret = pinctrl_select_state(i2s->pinctrl, i2s->bclk_on);
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if (ret)
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dev_err(i2s->dev, "bclk enable failed %d\n", ret);
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return ret;
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}
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static int i2s_pinctrl_select_bclk_off(struct rk_i2s_dev *i2s)
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{
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int ret = 0;
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if (!IS_ERR(i2s->pinctrl) && !IS_ERR_OR_NULL(i2s->bclk_off))
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ret = pinctrl_select_state(i2s->pinctrl, i2s->bclk_off);
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if (ret)
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dev_err(i2s->dev, "bclk disable failed %d\n", ret);
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return ret;
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}
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static int i2s_runtime_suspend(struct device *dev)
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{
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struct rk_i2s_dev *i2s = dev_get_drvdata(dev);
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regcache_cache_only(i2s->regmap, true);
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clk_disable_unprepare(i2s->mclk);
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return 0;
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}
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static int i2s_runtime_resume(struct device *dev)
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{
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struct rk_i2s_dev *i2s = dev_get_drvdata(dev);
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int ret;
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ret = clk_prepare_enable(i2s->mclk);
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if (ret) {
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dev_err(i2s->dev, "clock enable failed %d\n", ret);
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return ret;
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}
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regcache_cache_only(i2s->regmap, false);
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regcache_mark_dirty(i2s->regmap);
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ret = regcache_sync(i2s->regmap);
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if (ret)
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clk_disable_unprepare(i2s->mclk);
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return ret;
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}
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static inline struct rk_i2s_dev *to_info(struct snd_soc_dai *dai)
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{
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return snd_soc_dai_get_drvdata(dai);
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}
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static int rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
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{
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unsigned int val = 0;
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int ret = 0;
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spin_lock(&i2s->lock);
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if (on) {
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ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
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I2S_DMACR_TDE_ENABLE,
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I2S_DMACR_TDE_ENABLE);
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if (ret < 0)
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goto end;
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ret = regmap_update_bits(i2s->regmap, I2S_XFER,
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I2S_XFER_TXS_START | I2S_XFER_RXS_START,
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I2S_XFER_TXS_START | I2S_XFER_RXS_START);
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if (ret < 0)
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goto end;
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i2s->tx_start = true;
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} else {
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i2s->tx_start = false;
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ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
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I2S_DMACR_TDE_ENABLE,
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I2S_DMACR_TDE_DISABLE);
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if (ret < 0)
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goto end;
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if (!i2s->rx_start) {
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ret = regmap_update_bits(i2s->regmap, I2S_XFER,
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I2S_XFER_TXS_START | I2S_XFER_RXS_START,
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I2S_XFER_TXS_STOP | I2S_XFER_RXS_STOP);
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if (ret < 0)
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goto end;
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udelay(150);
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ret = regmap_update_bits(i2s->regmap, I2S_CLR,
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I2S_CLR_TXC | I2S_CLR_RXC,
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I2S_CLR_TXC | I2S_CLR_RXC);
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if (ret < 0)
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goto end;
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ret = regmap_read_poll_timeout_atomic(i2s->regmap,
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I2S_CLR,
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val,
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val == 0,
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20,
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200);
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if (ret < 0)
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dev_warn(i2s->dev, "fail to clear: %d\n", ret);
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}
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}
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end:
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spin_unlock(&i2s->lock);
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if (ret < 0)
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dev_err(i2s->dev, "lrclk update failed\n");
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return ret;
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}
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static int rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
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{
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unsigned int val = 0;
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int ret = 0;
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spin_lock(&i2s->lock);
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if (on) {
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ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
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I2S_DMACR_RDE_ENABLE,
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I2S_DMACR_RDE_ENABLE);
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if (ret < 0)
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goto end;
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ret = regmap_update_bits(i2s->regmap, I2S_XFER,
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I2S_XFER_TXS_START | I2S_XFER_RXS_START,
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I2S_XFER_TXS_START | I2S_XFER_RXS_START);
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if (ret < 0)
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goto end;
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i2s->rx_start = true;
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} else {
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i2s->rx_start = false;
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ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
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I2S_DMACR_RDE_ENABLE,
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I2S_DMACR_RDE_DISABLE);
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if (ret < 0)
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goto end;
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if (!i2s->tx_start) {
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ret = regmap_update_bits(i2s->regmap, I2S_XFER,
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I2S_XFER_TXS_START | I2S_XFER_RXS_START,
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I2S_XFER_TXS_STOP | I2S_XFER_RXS_STOP);
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if (ret < 0)
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goto end;
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udelay(150);
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ret = regmap_update_bits(i2s->regmap, I2S_CLR,
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I2S_CLR_TXC | I2S_CLR_RXC,
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I2S_CLR_TXC | I2S_CLR_RXC);
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if (ret < 0)
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goto end;
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ret = regmap_read_poll_timeout_atomic(i2s->regmap,
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I2S_CLR,
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val,
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val == 0,
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20,
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200);
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if (ret < 0)
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dev_warn(i2s->dev, "fail to clear: %d\n", ret);
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}
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}
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end:
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spin_unlock(&i2s->lock);
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if (ret < 0)
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dev_err(i2s->dev, "lrclk update failed\n");
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return ret;
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}
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static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
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unsigned int fmt)
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{
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struct rk_i2s_dev *i2s = to_info(cpu_dai);
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unsigned int mask = 0, val = 0;
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int ret = 0;
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pm_runtime_get_sync(cpu_dai->dev);
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mask = I2S_CKR_MSS_MASK;
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switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
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case SND_SOC_DAIFMT_BP_FP:
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/* Set source clock in Master mode */
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val = I2S_CKR_MSS_MASTER;
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i2s->is_master_mode = true;
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break;
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case SND_SOC_DAIFMT_BC_FC:
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val = I2S_CKR_MSS_SLAVE;
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i2s->is_master_mode = false;
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break;
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default:
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ret = -EINVAL;
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goto err_pm_put;
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}
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regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);
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mask = I2S_CKR_CKP_MASK | I2S_CKR_TLP_MASK | I2S_CKR_RLP_MASK;
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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val = I2S_CKR_CKP_NORMAL |
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I2S_CKR_TLP_NORMAL |
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I2S_CKR_RLP_NORMAL;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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val = I2S_CKR_CKP_NORMAL |
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I2S_CKR_TLP_INVERTED |
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I2S_CKR_RLP_INVERTED;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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val = I2S_CKR_CKP_INVERTED |
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I2S_CKR_TLP_NORMAL |
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I2S_CKR_RLP_NORMAL;
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break;
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case SND_SOC_DAIFMT_IB_IF:
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val = I2S_CKR_CKP_INVERTED |
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I2S_CKR_TLP_INVERTED |
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I2S_CKR_RLP_INVERTED;
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break;
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default:
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ret = -EINVAL;
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goto err_pm_put;
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}
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regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);
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mask = I2S_TXCR_IBM_MASK | I2S_TXCR_TFS_MASK | I2S_TXCR_PBM_MASK;
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_RIGHT_J:
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val = I2S_TXCR_IBM_RSJM;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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val = I2S_TXCR_IBM_LSJM;
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break;
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case SND_SOC_DAIFMT_I2S:
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val = I2S_TXCR_IBM_NORMAL;
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break;
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case SND_SOC_DAIFMT_DSP_A: /* PCM delay 1 bit mode */
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val = I2S_TXCR_TFS_PCM | I2S_TXCR_PBM_MODE(1);
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break;
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case SND_SOC_DAIFMT_DSP_B: /* PCM no delay mode */
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val = I2S_TXCR_TFS_PCM;
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break;
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default:
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ret = -EINVAL;
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goto err_pm_put;
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}
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regmap_update_bits(i2s->regmap, I2S_TXCR, mask, val);
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mask = I2S_RXCR_IBM_MASK | I2S_RXCR_TFS_MASK | I2S_RXCR_PBM_MASK;
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_RIGHT_J:
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val = I2S_RXCR_IBM_RSJM;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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val = I2S_RXCR_IBM_LSJM;
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break;
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case SND_SOC_DAIFMT_I2S:
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val = I2S_RXCR_IBM_NORMAL;
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break;
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case SND_SOC_DAIFMT_DSP_A: /* PCM delay 1 bit mode */
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val = I2S_RXCR_TFS_PCM | I2S_RXCR_PBM_MODE(1);
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break;
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case SND_SOC_DAIFMT_DSP_B: /* PCM no delay mode */
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val = I2S_RXCR_TFS_PCM;
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break;
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default:
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ret = -EINVAL;
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goto err_pm_put;
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}
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regmap_update_bits(i2s->regmap, I2S_RXCR, mask, val);
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err_pm_put:
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pm_runtime_put(cpu_dai->dev);
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return ret;
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}
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static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct rk_i2s_dev *i2s = to_info(dai);
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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unsigned int val = 0;
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unsigned int mclk_rate, bclk_rate, div_bclk, div_lrck;
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if (i2s->is_master_mode) {
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mclk_rate = clk_get_rate(i2s->mclk);
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bclk_rate = i2s->bclk_ratio * params_rate(params);
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if (!bclk_rate)
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return -EINVAL;
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div_bclk = DIV_ROUND_CLOSEST(mclk_rate, bclk_rate);
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div_lrck = bclk_rate / params_rate(params);
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regmap_update_bits(i2s->regmap, I2S_CKR,
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I2S_CKR_MDIV_MASK,
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I2S_CKR_MDIV(div_bclk));
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regmap_update_bits(i2s->regmap, I2S_CKR,
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I2S_CKR_TSD_MASK |
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I2S_CKR_RSD_MASK,
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I2S_CKR_TSD(div_lrck) |
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I2S_CKR_RSD(div_lrck));
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}
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S8:
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val |= I2S_TXCR_VDW(8);
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break;
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case SNDRV_PCM_FORMAT_S16_LE:
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val |= I2S_TXCR_VDW(16);
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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val |= I2S_TXCR_VDW(20);
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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val |= I2S_TXCR_VDW(24);
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break;
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case SNDRV_PCM_FORMAT_S32_LE:
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val |= I2S_TXCR_VDW(32);
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break;
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default:
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return -EINVAL;
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}
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switch (params_channels(params)) {
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case 8:
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val |= I2S_CHN_8;
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break;
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case 6:
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val |= I2S_CHN_6;
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break;
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case 4:
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val |= I2S_CHN_4;
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break;
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case 2:
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val |= I2S_CHN_2;
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break;
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default:
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dev_err(i2s->dev, "invalid channel: %d\n",
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params_channels(params));
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return -EINVAL;
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}
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if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
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regmap_update_bits(i2s->regmap, I2S_RXCR,
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I2S_RXCR_VDW_MASK | I2S_RXCR_CSR_MASK,
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val);
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else
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regmap_update_bits(i2s->regmap, I2S_TXCR,
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I2S_TXCR_VDW_MASK | I2S_TXCR_CSR_MASK,
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val);
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if (!IS_ERR(i2s->grf) && i2s->pins) {
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regmap_read(i2s->regmap, I2S_TXCR, &val);
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val &= I2S_TXCR_CSR_MASK;
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switch (val) {
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case I2S_CHN_4:
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val = I2S_IO_4CH_OUT_6CH_IN;
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break;
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case I2S_CHN_6:
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val = I2S_IO_6CH_OUT_4CH_IN;
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break;
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case I2S_CHN_8:
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val = I2S_IO_8CH_OUT_2CH_IN;
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break;
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default:
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val = I2S_IO_2CH_OUT_8CH_IN;
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break;
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}
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val <<= i2s->pins->shift;
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val |= (I2S_IO_DIRECTION_MASK << i2s->pins->shift) << 16;
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regmap_write(i2s->grf, i2s->pins->reg_offset, val);
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}
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regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_TDL_MASK,
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I2S_DMACR_TDL(16));
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regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_RDL_MASK,
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I2S_DMACR_RDL(16));
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val = I2S_CKR_TRCM_TXRX;
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if (dai->driver->symmetric_rate && rtd->dai_link->symmetric_rate)
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val = I2S_CKR_TRCM_TXONLY;
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regmap_update_bits(i2s->regmap, I2S_CKR,
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I2S_CKR_TRCM_MASK,
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val);
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return 0;
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}
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|
|
static int rockchip_i2s_trigger(struct snd_pcm_substream *substream,
|
|
int cmd, struct snd_soc_dai *dai)
|
|
{
|
|
struct rk_i2s_dev *i2s = to_info(dai);
|
|
int ret = 0;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
|
|
ret = rockchip_snd_rxctrl(i2s, 1);
|
|
else
|
|
ret = rockchip_snd_txctrl(i2s, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
i2s_pinctrl_select_bclk_on(i2s);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
|
|
if (!i2s->tx_start)
|
|
i2s_pinctrl_select_bclk_off(i2s);
|
|
ret = rockchip_snd_rxctrl(i2s, 0);
|
|
} else {
|
|
if (!i2s->rx_start)
|
|
i2s_pinctrl_select_bclk_off(i2s);
|
|
ret = rockchip_snd_txctrl(i2s, 0);
|
|
}
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rockchip_i2s_set_bclk_ratio(struct snd_soc_dai *dai,
|
|
unsigned int ratio)
|
|
{
|
|
struct rk_i2s_dev *i2s = to_info(dai);
|
|
|
|
i2s->bclk_ratio = ratio;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rockchip_i2s_set_sysclk(struct snd_soc_dai *cpu_dai, int clk_id,
|
|
unsigned int freq, int dir)
|
|
{
|
|
struct rk_i2s_dev *i2s = to_info(cpu_dai);
|
|
int ret;
|
|
|
|
if (freq == 0)
|
|
return 0;
|
|
|
|
ret = clk_set_rate(i2s->mclk, freq);
|
|
if (ret)
|
|
dev_err(i2s->dev, "Fail to set mclk %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rockchip_i2s_dai_probe(struct snd_soc_dai *dai)
|
|
{
|
|
struct rk_i2s_dev *i2s = snd_soc_dai_get_drvdata(dai);
|
|
|
|
snd_soc_dai_init_dma_data(dai,
|
|
i2s->has_playback ? &i2s->playback_dma_data : NULL,
|
|
i2s->has_capture ? &i2s->capture_dma_data : NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops rockchip_i2s_dai_ops = {
|
|
.probe = rockchip_i2s_dai_probe,
|
|
.hw_params = rockchip_i2s_hw_params,
|
|
.set_bclk_ratio = rockchip_i2s_set_bclk_ratio,
|
|
.set_sysclk = rockchip_i2s_set_sysclk,
|
|
.set_fmt = rockchip_i2s_set_fmt,
|
|
.trigger = rockchip_i2s_trigger,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver rockchip_i2s_dai = {
|
|
.ops = &rockchip_i2s_dai_ops,
|
|
.symmetric_rate = 1,
|
|
};
|
|
|
|
static const struct snd_soc_component_driver rockchip_i2s_component = {
|
|
.name = DRV_NAME,
|
|
.legacy_dai_naming = 1,
|
|
};
|
|
|
|
static bool rockchip_i2s_wr_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case I2S_TXCR:
|
|
case I2S_RXCR:
|
|
case I2S_CKR:
|
|
case I2S_DMACR:
|
|
case I2S_INTCR:
|
|
case I2S_XFER:
|
|
case I2S_CLR:
|
|
case I2S_TXDR:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool rockchip_i2s_rd_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case I2S_TXCR:
|
|
case I2S_RXCR:
|
|
case I2S_CKR:
|
|
case I2S_DMACR:
|
|
case I2S_INTCR:
|
|
case I2S_XFER:
|
|
case I2S_CLR:
|
|
case I2S_TXDR:
|
|
case I2S_RXDR:
|
|
case I2S_FIFOLR:
|
|
case I2S_INTSR:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool rockchip_i2s_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case I2S_INTSR:
|
|
case I2S_CLR:
|
|
case I2S_FIFOLR:
|
|
case I2S_TXDR:
|
|
case I2S_RXDR:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool rockchip_i2s_precious_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case I2S_RXDR:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static const struct reg_default rockchip_i2s_reg_defaults[] = {
|
|
{0x00, 0x0000000f},
|
|
{0x04, 0x0000000f},
|
|
{0x08, 0x00071f1f},
|
|
{0x10, 0x001f0000},
|
|
{0x14, 0x01f00000},
|
|
};
|
|
|
|
static const struct regmap_config rockchip_i2s_regmap_config = {
|
|
.reg_bits = 32,
|
|
.reg_stride = 4,
|
|
.val_bits = 32,
|
|
.max_register = I2S_RXDR,
|
|
.reg_defaults = rockchip_i2s_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(rockchip_i2s_reg_defaults),
|
|
.writeable_reg = rockchip_i2s_wr_reg,
|
|
.readable_reg = rockchip_i2s_rd_reg,
|
|
.volatile_reg = rockchip_i2s_volatile_reg,
|
|
.precious_reg = rockchip_i2s_precious_reg,
|
|
.cache_type = REGCACHE_FLAT,
|
|
};
|
|
|
|
static const struct rk_i2s_pins rk3399_i2s_pins = {
|
|
.reg_offset = 0xe220,
|
|
.shift = 11,
|
|
};
|
|
|
|
static const struct of_device_id rockchip_i2s_match[] __maybe_unused = {
|
|
{ .compatible = "rockchip,px30-i2s", },
|
|
{ .compatible = "rockchip,rk1808-i2s", },
|
|
{ .compatible = "rockchip,rk3036-i2s", },
|
|
{ .compatible = "rockchip,rk3066-i2s", },
|
|
{ .compatible = "rockchip,rk3128-i2s", },
|
|
{ .compatible = "rockchip,rk3188-i2s", },
|
|
{ .compatible = "rockchip,rk3228-i2s", },
|
|
{ .compatible = "rockchip,rk3288-i2s", },
|
|
{ .compatible = "rockchip,rk3308-i2s", },
|
|
{ .compatible = "rockchip,rk3328-i2s", },
|
|
{ .compatible = "rockchip,rk3366-i2s", },
|
|
{ .compatible = "rockchip,rk3368-i2s", },
|
|
{ .compatible = "rockchip,rk3399-i2s", .data = &rk3399_i2s_pins },
|
|
{ .compatible = "rockchip,rk3588-i2s", },
|
|
{ .compatible = "rockchip,rv1126-i2s", },
|
|
{},
|
|
};
|
|
|
|
static int rockchip_i2s_init_dai(struct rk_i2s_dev *i2s, struct resource *res,
|
|
struct snd_soc_dai_driver **dp)
|
|
{
|
|
struct device_node *node = i2s->dev->of_node;
|
|
struct snd_soc_dai_driver *dai;
|
|
struct property *dma_names;
|
|
const char *dma_name;
|
|
unsigned int val;
|
|
|
|
of_property_for_each_string(node, "dma-names", dma_names, dma_name) {
|
|
if (!strcmp(dma_name, "tx"))
|
|
i2s->has_playback = true;
|
|
if (!strcmp(dma_name, "rx"))
|
|
i2s->has_capture = true;
|
|
}
|
|
|
|
dai = devm_kmemdup(i2s->dev, &rockchip_i2s_dai,
|
|
sizeof(*dai), GFP_KERNEL);
|
|
if (!dai)
|
|
return -ENOMEM;
|
|
|
|
if (i2s->has_playback) {
|
|
dai->playback.stream_name = "Playback";
|
|
dai->playback.channels_min = 2;
|
|
dai->playback.channels_max = 8;
|
|
dai->playback.rates = SNDRV_PCM_RATE_8000_192000;
|
|
dai->playback.formats = SNDRV_PCM_FMTBIT_S8 |
|
|
SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S20_3LE |
|
|
SNDRV_PCM_FMTBIT_S24_LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE;
|
|
|
|
i2s->playback_dma_data.addr = res->start + I2S_TXDR;
|
|
i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
|
|
i2s->playback_dma_data.maxburst = 8;
|
|
|
|
if (!of_property_read_u32(node, "rockchip,playback-channels", &val)) {
|
|
if (val >= 2 && val <= 8)
|
|
dai->playback.channels_max = val;
|
|
}
|
|
}
|
|
|
|
if (i2s->has_capture) {
|
|
dai->capture.stream_name = "Capture";
|
|
dai->capture.channels_min = 2;
|
|
dai->capture.channels_max = 8;
|
|
dai->capture.rates = SNDRV_PCM_RATE_8000_192000;
|
|
dai->capture.formats = SNDRV_PCM_FMTBIT_S8 |
|
|
SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S20_3LE |
|
|
SNDRV_PCM_FMTBIT_S24_LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE;
|
|
|
|
i2s->capture_dma_data.addr = res->start + I2S_RXDR;
|
|
i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
|
|
i2s->capture_dma_data.maxburst = 8;
|
|
|
|
if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) {
|
|
if (val >= 2 && val <= 8)
|
|
dai->capture.channels_max = val;
|
|
}
|
|
}
|
|
|
|
if (dp)
|
|
*dp = dai;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rockchip_i2s_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *node = pdev->dev.of_node;
|
|
const struct of_device_id *of_id;
|
|
struct rk_i2s_dev *i2s;
|
|
struct snd_soc_dai_driver *dai;
|
|
struct resource *res;
|
|
void __iomem *regs;
|
|
int ret;
|
|
|
|
i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL);
|
|
if (!i2s)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_init(&i2s->lock);
|
|
i2s->dev = &pdev->dev;
|
|
|
|
i2s->grf = syscon_regmap_lookup_by_phandle(node, "rockchip,grf");
|
|
if (!IS_ERR(i2s->grf)) {
|
|
of_id = of_match_device(rockchip_i2s_match, &pdev->dev);
|
|
if (!of_id || !of_id->data)
|
|
return -EINVAL;
|
|
|
|
i2s->pins = of_id->data;
|
|
}
|
|
|
|
/* try to prepare related clocks */
|
|
i2s->hclk = devm_clk_get(&pdev->dev, "i2s_hclk");
|
|
if (IS_ERR(i2s->hclk)) {
|
|
dev_err(&pdev->dev, "Can't retrieve i2s bus clock\n");
|
|
return PTR_ERR(i2s->hclk);
|
|
}
|
|
ret = clk_prepare_enable(i2s->hclk);
|
|
if (ret) {
|
|
dev_err(i2s->dev, "hclock enable failed %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
i2s->mclk = devm_clk_get(&pdev->dev, "i2s_clk");
|
|
if (IS_ERR(i2s->mclk)) {
|
|
dev_err(&pdev->dev, "Can't retrieve i2s master clock\n");
|
|
ret = PTR_ERR(i2s->mclk);
|
|
goto err_clk;
|
|
}
|
|
|
|
regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
|
|
if (IS_ERR(regs)) {
|
|
ret = PTR_ERR(regs);
|
|
goto err_clk;
|
|
}
|
|
|
|
i2s->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
|
|
&rockchip_i2s_regmap_config);
|
|
if (IS_ERR(i2s->regmap)) {
|
|
dev_err(&pdev->dev,
|
|
"Failed to initialise managed register map\n");
|
|
ret = PTR_ERR(i2s->regmap);
|
|
goto err_clk;
|
|
}
|
|
|
|
i2s->bclk_ratio = 64;
|
|
i2s->pinctrl = devm_pinctrl_get(&pdev->dev);
|
|
if (!IS_ERR(i2s->pinctrl)) {
|
|
i2s->bclk_on = pinctrl_lookup_state(i2s->pinctrl, "bclk_on");
|
|
if (!IS_ERR_OR_NULL(i2s->bclk_on)) {
|
|
i2s->bclk_off = pinctrl_lookup_state(i2s->pinctrl, "bclk_off");
|
|
if (IS_ERR_OR_NULL(i2s->bclk_off)) {
|
|
dev_err(&pdev->dev, "failed to find i2s bclk_off\n");
|
|
ret = -EINVAL;
|
|
goto err_clk;
|
|
}
|
|
}
|
|
} else {
|
|
dev_dbg(&pdev->dev, "failed to find i2s pinctrl\n");
|
|
}
|
|
|
|
i2s_pinctrl_select_bclk_off(i2s);
|
|
|
|
dev_set_drvdata(&pdev->dev, i2s);
|
|
|
|
pm_runtime_enable(&pdev->dev);
|
|
if (!pm_runtime_enabled(&pdev->dev)) {
|
|
ret = i2s_runtime_resume(&pdev->dev);
|
|
if (ret)
|
|
goto err_pm_disable;
|
|
}
|
|
|
|
ret = rockchip_i2s_init_dai(i2s, res, &dai);
|
|
if (ret)
|
|
goto err_pm_disable;
|
|
|
|
ret = devm_snd_soc_register_component(&pdev->dev,
|
|
&rockchip_i2s_component,
|
|
dai, 1);
|
|
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Could not register DAI\n");
|
|
goto err_suspend;
|
|
}
|
|
|
|
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Could not register PCM\n");
|
|
goto err_suspend;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_suspend:
|
|
if (!pm_runtime_status_suspended(&pdev->dev))
|
|
i2s_runtime_suspend(&pdev->dev);
|
|
err_pm_disable:
|
|
pm_runtime_disable(&pdev->dev);
|
|
err_clk:
|
|
clk_disable_unprepare(i2s->hclk);
|
|
return ret;
|
|
}
|
|
|
|
static void rockchip_i2s_remove(struct platform_device *pdev)
|
|
{
|
|
struct rk_i2s_dev *i2s = dev_get_drvdata(&pdev->dev);
|
|
|
|
pm_runtime_disable(&pdev->dev);
|
|
if (!pm_runtime_status_suspended(&pdev->dev))
|
|
i2s_runtime_suspend(&pdev->dev);
|
|
|
|
clk_disable_unprepare(i2s->hclk);
|
|
}
|
|
|
|
static const struct dev_pm_ops rockchip_i2s_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(i2s_runtime_suspend, i2s_runtime_resume,
|
|
NULL)
|
|
};
|
|
|
|
static struct platform_driver rockchip_i2s_driver = {
|
|
.probe = rockchip_i2s_probe,
|
|
.remove_new = rockchip_i2s_remove,
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
.of_match_table = of_match_ptr(rockchip_i2s_match),
|
|
.pm = &rockchip_i2s_pm_ops,
|
|
},
|
|
};
|
|
module_platform_driver(rockchip_i2s_driver);
|
|
|
|
MODULE_DESCRIPTION("ROCKCHIP IIS ASoC Interface");
|
|
MODULE_AUTHOR("jianqun <jay.xu@rock-chips.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:" DRV_NAME);
|
|
MODULE_DEVICE_TABLE(of, rockchip_i2s_match);
|