Merge tag 'sound-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "This development cycle resulted in a fair amount of changes in both
  core and driver sides. The most significant change in ALSA core is
  about PCM. Also the support of of-graph card and the new DAPM widget
  for DSP are noteworthy changes in ASoC core. And there're lots of
  small changes splat over the tree, as you can see in diffstat.

  Below are a few highlights:

  ALSA core:
   - Removal of set_fs() hackery from PCM core stuff, and the code
     reorganization / optimization thereafter
   - Improved support of PCM ack ops, and a new ABI for improved
     control/status mmap handling
   - Lots of constifications in various codes

  ASoC core:
   - The support of of-graph card, which may work as a better generic
     device for a replacement of simple-card
   - New widget types intended mainly for use with DSPs

  ASoC drivers:
   - New drivers for Allwinner V3s SoCs
   - Ensonic ES8316 codec support
   - More Intel SKL and KBL works
   - More device support for Intel SST Atom (mostly for cheap tablets
     and 2-in-1 devices)
   - Support for Rockchip PDM controllers
   - Support for STM32 I2S and S/PDIF controllers
   - Support for ZTE AUD96P22 codecs

  HD-audio:
   - Support of new Realtek codecs (ALC215/ALC285/ALC289), more quirks
     for HP and Dell machines
   - A few more fixes for i915 component binding"

* tag 'sound-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (418 commits)
  ALSA: hda - Fix unbalance of i915 module refcount
  ASoC: Intel: Skylake: Remove driver debugfs exit
  ASoC: Intel: Skylake: explicitly add the headers sst-dsp.h
  ALSA: hda/realtek - Remove GPIO_MASK
  ALSA: hda/realtek - Fix typo of pincfg for Dell quirk
  ALSA: pcm: add a documentation for tracepoints
  ALSA: atmel: ac97c: fix error return code in atmel_ac97c_probe()
  ALSA: x86: fix error return code in hdmi_lpe_audio_probe()
  ASoC: Intel: Skylake: Add support to read firmware registers
  ASoC: Intel: Skylake: Add sram address to sst_addr structure
  ASoC: Intel: Skylake: Debugfs facility to dump module config
  ASoC: Intel: Skylake: Add debugfs support
  ASoC: fix semicolon.cocci warnings
  ASoC: rt5645: Add quirk override by module option
  ASoC: rsnd: make arrays path and cmd_case static const
  ASoC: audio-graph-card: add widgets and routing for external amplifier support
  ASoC: audio-graph-card: update bindings for amplifier support
  ASoC: rt5665: calibration should be done before jack detection
  ASoC: rsnd: constify dev_pm_ops structures.
  ASoC: nau8825: change crosstalk-bypass property to bool type
  ...

1 files changed, 516 insertions, 0 deletions

diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c
new file mode 100644
index 000000000000..c5ddeed97260
--- /dev/null
+++ b/sound/soc/rockchip/rockchip_pdm.c
@@ -0,0 +1,516 @@
+/*
+ * Rockchip PDM ALSA SoC Digital Audio Interface(DAI)  driver
+ *
+ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm_params.h>
+
+#include "rockchip_pdm.h"
+
+#define PDM_DMA_BURST_SIZE	(16) /* size * width: 16*4 = 64 bytes */
+
+struct rk_pdm_dev {
+	struct device *dev;
+	struct clk *clk;
+	struct clk *hclk;
+	struct regmap *regmap;
+	struct snd_dmaengine_dai_dma_data capture_dma_data;
+};
+
+struct rk_pdm_clkref {
+	unsigned int sr;
+	unsigned int clk;
+};
+
+static struct rk_pdm_clkref clkref[] = {
+	{ 8000, 40960000 },
+	{ 11025, 56448000 },
+	{ 12000, 61440000 },
+};
+
+static unsigned int get_pdm_clk(unsigned int sr)
+{
+	unsigned int i, count, clk, div;
+
+	clk = 0;
+	if (!sr)
+		return clk;
+
+	count = ARRAY_SIZE(clkref);
+	for (i = 0; i < count; i++) {
+		if (sr % clkref[i].sr)
+			continue;
+		div = sr / clkref[i].sr;
+		if ((div & (div - 1)) == 0) {
+			clk = clkref[i].clk;
+			break;
+		}
+	}
+
+	return clk;
+}
+
+static inline struct rk_pdm_dev *to_info(struct snd_soc_dai *dai)
+{
+	return snd_soc_dai_get_drvdata(dai);
+}
+
+static void rockchip_pdm_rxctrl(struct rk_pdm_dev *pdm, int on)
+{
+	if (on) {
+		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL,
+				   PDM_DMA_RD_MSK, PDM_DMA_RD_EN);
+		regmap_update_bits(pdm->regmap, PDM_SYSCONFIG,
+				   PDM_RX_MASK, PDM_RX_START);
+	} else {
+		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL,
+				   PDM_DMA_RD_MSK, PDM_DMA_RD_DIS);
+		regmap_update_bits(pdm->regmap, PDM_SYSCONFIG,
+				   PDM_RX_MASK | PDM_RX_CLR_MASK,
+				   PDM_RX_STOP | PDM_RX_CLR_WR);
+	}
+}
+
+static int rockchip_pdm_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *params,
+				  struct snd_soc_dai *dai)
+{
+	struct rk_pdm_dev *pdm = to_info(dai);
+	unsigned int val = 0;
+	unsigned int clk_rate, clk_div, samplerate;
+	int ret;
+
+	samplerate = params_rate(params);
+	clk_rate = get_pdm_clk(samplerate);
+	if (!clk_rate)
+		return -EINVAL;
+
+	ret = clk_set_rate(pdm->clk, clk_rate);
+	if (ret)
+		return -EINVAL;
+
+	clk_div = DIV_ROUND_CLOSEST(clk_rate, samplerate);
+
+	switch (clk_div) {
+	case 320:
+		val = PDM_CLK_320FS;
+		break;
+	case 640:
+		val = PDM_CLK_640FS;
+		break;
+	case 1280:
+		val = PDM_CLK_1280FS;
+		break;
+	case 2560:
+		val = PDM_CLK_2560FS;
+		break;
+	case 5120:
+		val = PDM_CLK_5120FS;
+		break;
+	default:
+		dev_err(pdm->dev, "unsupported div: %d\n", clk_div);
+		return -EINVAL;
+	}
+
+	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, PDM_DS_RATIO_MSK, val);
+	regmap_update_bits(pdm->regmap, PDM_HPF_CTRL,
+			   PDM_HPF_CF_MSK, PDM_HPF_60HZ);
+	regmap_update_bits(pdm->regmap, PDM_HPF_CTRL,
+			   PDM_HPF_LE | PDM_HPF_RE, PDM_HPF_LE | PDM_HPF_RE);
+	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, PDM_CLK_EN, PDM_CLK_EN);
+
+	val = 0;
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S8:
+		val |= PDM_VDW(8);
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		val |= PDM_VDW(16);
+		break;
+	case SNDRV_PCM_FORMAT_S20_3LE:
+		val |= PDM_VDW(20);
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		val |= PDM_VDW(24);
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		val |= PDM_VDW(32);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (params_channels(params)) {
+	case 8:
+		val |= PDM_PATH3_EN;
+		/* fallthrough */
+	case 6:
+		val |= PDM_PATH2_EN;
+		/* fallthrough */
+	case 4:
+		val |= PDM_PATH1_EN;
+		/* fallthrough */
+	case 2:
+		val |= PDM_PATH0_EN;
+		break;
+	default:
+		dev_err(pdm->dev, "invalid channel: %d\n",
+			params_channels(params));
+		return -EINVAL;
+	}
+
+	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+		regmap_update_bits(pdm->regmap, PDM_CTRL0,
+				   PDM_PATH_MSK | PDM_VDW_MSK,
+				   val);
+		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL, PDM_DMA_RDL_MSK,
+				   PDM_DMA_RDL(16));
+		regmap_update_bits(pdm->regmap, PDM_SYSCONFIG,
+				   PDM_RX_MASK | PDM_RX_CLR_MASK,
+				   PDM_RX_STOP | PDM_RX_CLR_WR);
+	}
+
+	return 0;
+}
+
+static int rockchip_pdm_set_fmt(struct snd_soc_dai *cpu_dai,
+				unsigned int fmt)
+{
+	struct rk_pdm_dev *pdm = to_info(cpu_dai);
+	unsigned int mask = 0, val = 0;
+
+	mask = PDM_CKP_MSK;
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		val = PDM_CKP_NORMAL;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		val = PDM_CKP_INVERTED;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, mask, val);
+
+	return 0;
+}
+
+static int rockchip_pdm_trigger(struct snd_pcm_substream *substream, int cmd,
+				struct snd_soc_dai *dai)
+{
+	struct rk_pdm_dev *pdm = 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)
+			rockchip_pdm_rxctrl(pdm, 1);
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+			rockchip_pdm_rxctrl(pdm, 0);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int rockchip_pdm_dai_probe(struct snd_soc_dai *dai)
+{
+	struct rk_pdm_dev *pdm = to_info(dai);
+
+	dai->capture_dma_data = &pdm->capture_dma_data;
+
+	return 0;
+}
+
+static struct snd_soc_dai_ops rockchip_pdm_dai_ops = {
+	.set_fmt = rockchip_pdm_set_fmt,
+	.trigger = rockchip_pdm_trigger,
+	.hw_params = rockchip_pdm_hw_params,
+};
+
+#define ROCKCHIP_PDM_RATES SNDRV_PCM_RATE_8000_192000
+#define ROCKCHIP_PDM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+			      SNDRV_PCM_FMTBIT_S20_3LE | \
+			      SNDRV_PCM_FMTBIT_S24_LE | \
+			      SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver rockchip_pdm_dai = {
+	.probe = rockchip_pdm_dai_probe,
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 2,
+		.channels_max = 8,
+		.rates = ROCKCHIP_PDM_RATES,
+		.formats = ROCKCHIP_PDM_FORMATS,
+	},
+	.ops = &rockchip_pdm_dai_ops,
+	.symmetric_rates = 1,
+};
+
+static const struct snd_soc_component_driver rockchip_pdm_component = {
+	.name = "rockchip-pdm",
+};
+
+static int rockchip_pdm_runtime_suspend(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(pdm->clk);
+	clk_disable_unprepare(pdm->hclk);
+
+	return 0;
+}
+
+static int rockchip_pdm_runtime_resume(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clk_prepare_enable(pdm->clk);
+	if (ret) {
+		dev_err(pdm->dev, "clock enable failed %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(pdm->hclk);
+	if (ret) {
+		dev_err(pdm->dev, "hclock enable failed %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static bool rockchip_pdm_wr_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case PDM_SYSCONFIG:
+	case PDM_CTRL0:
+	case PDM_CTRL1:
+	case PDM_CLK_CTRL:
+	case PDM_HPF_CTRL:
+	case PDM_FIFO_CTRL:
+	case PDM_DMA_CTRL:
+	case PDM_INT_EN:
+	case PDM_INT_CLR:
+	case PDM_DATA_VALID:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rockchip_pdm_rd_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case PDM_SYSCONFIG:
+	case PDM_CTRL0:
+	case PDM_CTRL1:
+	case PDM_CLK_CTRL:
+	case PDM_HPF_CTRL:
+	case PDM_FIFO_CTRL:
+	case PDM_DMA_CTRL:
+	case PDM_INT_EN:
+	case PDM_INT_CLR:
+	case PDM_INT_ST:
+	case PDM_DATA_VALID:
+	case PDM_VERSION:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rockchip_pdm_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case PDM_SYSCONFIG:
+	case PDM_INT_CLR:
+	case PDM_INT_ST:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config rockchip_pdm_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = PDM_VERSION,
+	.writeable_reg = rockchip_pdm_wr_reg,
+	.readable_reg = rockchip_pdm_rd_reg,
+	.volatile_reg = rockchip_pdm_volatile_reg,
+	.cache_type = REGCACHE_FLAT,
+};
+
+static int rockchip_pdm_probe(struct platform_device *pdev)
+{
+	struct rk_pdm_dev *pdm;
+	struct resource *res;
+	void __iomem *regs;
+	int ret;
+
+	pdm = devm_kzalloc(&pdev->dev, sizeof(*pdm), GFP_KERNEL);
+	if (!pdm)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	pdm->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
+					    &rockchip_pdm_regmap_config);
+	if (IS_ERR(pdm->regmap))
+		return PTR_ERR(pdm->regmap);
+
+	pdm->capture_dma_data.addr = res->start + PDM_RXFIFO_DATA;
+	pdm->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	pdm->capture_dma_data.maxburst = PDM_DMA_BURST_SIZE;
+
+	pdm->dev = &pdev->dev;
+	dev_set_drvdata(&pdev->dev, pdm);
+
+	pdm->clk = devm_clk_get(&pdev->dev, "pdm_clk");
+	if (IS_ERR(pdm->clk))
+		return PTR_ERR(pdm->clk);
+
+	pdm->hclk = devm_clk_get(&pdev->dev, "pdm_hclk");
+	if (IS_ERR(pdm->hclk))
+		return PTR_ERR(pdm->hclk);
+
+	ret = clk_prepare_enable(pdm->hclk);
+	if (ret)
+		return ret;
+
+	pm_runtime_enable(&pdev->dev);
+	if (!pm_runtime_enabled(&pdev->dev)) {
+		ret = rockchip_pdm_runtime_resume(&pdev->dev);
+		if (ret)
+			goto err_pm_disable;
+	}
+
+	ret = devm_snd_soc_register_component(&pdev->dev,
+					      &rockchip_pdm_component,
+					      &rockchip_pdm_dai, 1);
+
+	if (ret) {
+		dev_err(&pdev->dev, "could not register dai: %d\n", ret);
+		goto err_suspend;
+	}
+
+	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (ret) {
+		dev_err(&pdev->dev, "could not register pcm: %d\n", ret);
+		goto err_suspend;
+	}
+
+	return 0;
+
+err_suspend:
+	if (!pm_runtime_status_suspended(&pdev->dev))
+		rockchip_pdm_runtime_suspend(&pdev->dev);
+err_pm_disable:
+	pm_runtime_disable(&pdev->dev);
+
+	clk_disable_unprepare(pdm->hclk);
+
+	return ret;
+}
+
+static int rockchip_pdm_remove(struct platform_device *pdev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(&pdev->dev);
+
+	pm_runtime_disable(&pdev->dev);
+	if (!pm_runtime_status_suspended(&pdev->dev))
+		rockchip_pdm_runtime_suspend(&pdev->dev);
+
+	clk_disable_unprepare(pdm->clk);
+	clk_disable_unprepare(pdm->hclk);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int rockchip_pdm_suspend(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+
+	regcache_mark_dirty(pdm->regmap);
+
+	return 0;
+}
+
+static int rockchip_pdm_resume(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+	int ret;
+
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = regcache_sync(pdm->regmap);
+
+	pm_runtime_put(dev);
+
+	return ret;
+}
+#endif
+
+static const struct dev_pm_ops rockchip_pdm_pm_ops = {
+	SET_RUNTIME_PM_OPS(rockchip_pdm_runtime_suspend,
+			   rockchip_pdm_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(rockchip_pdm_suspend, rockchip_pdm_resume)
+};
+
+static const struct of_device_id rockchip_pdm_match[] = {
+	{ .compatible = "rockchip,pdm", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, rockchip_pdm_match);
+
+static struct platform_driver rockchip_pdm_driver = {
+	.probe  = rockchip_pdm_probe,
+	.remove = rockchip_pdm_remove,
+	.driver = {
+		.name = "rockchip-pdm",
+		.of_match_table = of_match_ptr(rockchip_pdm_match),
+		.pm = &rockchip_pdm_pm_ops,
+	},
+};
+
+module_platform_driver(rockchip_pdm_driver);
+
+MODULE_AUTHOR("Sugar <sugar.zhang@rock-chips.com>");
+MODULE_DESCRIPTION("Rockchip PDM Controller Driver");
+MODULE_LICENSE("GPL v2");