Merge remote-tracking branches 'asoc/topic/rt5514', 'asoc/topic/rt5614',...

- reg : The I2C address of the device.

Optional properties:

- clocks: The phandle of the master clock to the CODEC

- clock-names: Should be "mclk"

Pins on the device (for linking into audio routes) for RT5514:

  * DMIC1L

	.get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \

	.private_value = SOC_DOUBLE_R_S_VALUE(reg_left, reg_right, xshift, \

					    xmin, xmax, xsign_bit, xinvert) }

#define SOC_SINGLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \

{	.iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \

	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \

		  SNDRV_CTL_ELEM_ACCESS_READWRITE, \

	.tlv.p  = (tlv_array), \

	.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\

	.put = snd_soc_put_volsw, \

	.private_value = (unsigned long)&(struct soc_mixer_control) \

	{.reg = xreg, .rreg = xreg,  \

	 .min = xmin, .max = xmax, .platform_max = xmax, \

	.sign_bit = 7,} }

#define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \

{	.iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \

	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \

config SND_SOC_RT5514

	tristate

config SND_SOC_RT5514_SPI

	tristate

config SND_SOC_RT5616

	tristate "Realtek RT5616 CODEC"

	depends on I2C

snd-soc-rt286-objs := rt286.o

snd-soc-rt298-objs := rt298.o

snd-soc-rt5514-objs := rt5514.o

snd-soc-rt5514-spi-objs := rt5514-spi.o

snd-soc-rt5616-objs := rt5616.o

snd-soc-rt5631-objs := rt5631.o

snd-soc-rt5640-objs := rt5640.o

obj-$(CONFIG_SND_SOC_RT286)	+= snd-soc-rt286.o

obj-$(CONFIG_SND_SOC_RT298)	+= snd-soc-rt298.o

obj-$(CONFIG_SND_SOC_RT5514)	+= snd-soc-rt5514.o

obj-$(CONFIG_SND_SOC_RT5514_SPI)	+= snd-soc-rt5514-spi.o

obj-$(CONFIG_SND_SOC_RT5616)	+= snd-soc-rt5616.o

obj-$(CONFIG_SND_SOC_RT5631)	+= snd-soc-rt5631.o

obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o

/*

 * rt5514-spi.c  --  RT5514 SPI driver

 *

 * Copyright 2015 Realtek Semiconductor Corp.

 * Author: Oder Chiou <oder_chiou@realtek.com>

 *

 * 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/input.h>

#include <linux/spi/spi.h>

#include <linux/device.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/slab.h>

#include <linux/gpio.h>

#include <linux/sched.h>

#include <linux/kthread.h>

#include <linux/uaccess.h>

#include <linux/miscdevice.h>

#include <linux/regulator/consumer.h>

#include <linux/pm_qos.h>

#include <linux/sysfs.h>

#include <linux/clk.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <sound/initval.h>

#include <sound/tlv.h>

#include "rt5514-spi.h"

static struct spi_device *rt5514_spi;

struct rt5514_dsp {

	struct device *dev;

	struct delayed_work copy_work;

	struct mutex dma_lock;

	struct snd_pcm_substream *substream;

	unsigned int buf_base, buf_limit, buf_rp;

	size_t buf_size;

	size_t dma_offset;

	size_t dsp_offset;

};

static const struct snd_pcm_hardware rt5514_spi_pcm_hardware = {

	.info			= SNDRV_PCM_INFO_MMAP |

				  SNDRV_PCM_INFO_MMAP_VALID |

				  SNDRV_PCM_INFO_INTERLEAVED,

	.formats		= SNDRV_PCM_FMTBIT_S16_LE,

	.period_bytes_min	= PAGE_SIZE,

	.period_bytes_max	= 0x20000 / 8,

	.periods_min		= 8,

	.periods_max		= 8,

	.channels_min		= 1,

	.channels_max		= 1,

	.buffer_bytes_max	= 0x20000,

};

static struct snd_soc_dai_driver rt5514_spi_dai = {

	.name = "rt5514-dsp-cpu-dai",

	.id = 0,

	.capture = {

		.stream_name = "DSP Capture",

		.channels_min = 1,

		.channels_max = 1,

		.rates = SNDRV_PCM_RATE_16000,

		.formats = SNDRV_PCM_FMTBIT_S16_LE,

	},

};

static void rt5514_spi_copy_work(struct work_struct *work)

{

	struct rt5514_dsp *rt5514_dsp =

		container_of(work, struct rt5514_dsp, copy_work.work);

	struct snd_pcm_runtime *runtime;

	size_t period_bytes, truncated_bytes = 0;

	mutex_lock(&rt5514_dsp->dma_lock);

	if (!rt5514_dsp->substream) {

		dev_err(rt5514_dsp->dev, "No pcm substream\n");

		goto done;

	}

	runtime = rt5514_dsp->substream->runtime;

	period_bytes = snd_pcm_lib_period_bytes(rt5514_dsp->substream);

	if (rt5514_dsp->buf_size - rt5514_dsp->dsp_offset <  period_bytes)

		period_bytes = rt5514_dsp->buf_size - rt5514_dsp->dsp_offset;

	if (rt5514_dsp->buf_rp + period_bytes <= rt5514_dsp->buf_limit) {

		rt5514_spi_burst_read(rt5514_dsp->buf_rp,

			runtime->dma_area + rt5514_dsp->dma_offset,

			period_bytes);

		if (rt5514_dsp->buf_rp + period_bytes == rt5514_dsp->buf_limit)

			rt5514_dsp->buf_rp = rt5514_dsp->buf_base;

		else

			rt5514_dsp->buf_rp += period_bytes;

	} else {

		truncated_bytes = rt5514_dsp->buf_limit - rt5514_dsp->buf_rp;

		rt5514_spi_burst_read(rt5514_dsp->buf_rp,

			runtime->dma_area + rt5514_dsp->dma_offset,

			truncated_bytes);

		rt5514_spi_burst_read(rt5514_dsp->buf_base,

			runtime->dma_area + rt5514_dsp->dma_offset +

			truncated_bytes, period_bytes - truncated_bytes);

			rt5514_dsp->buf_rp = rt5514_dsp->buf_base +

				period_bytes - truncated_bytes;

	}

	rt5514_dsp->dma_offset += period_bytes;

	if (rt5514_dsp->dma_offset >= runtime->dma_bytes)

		rt5514_dsp->dma_offset = 0;

	rt5514_dsp->dsp_offset += period_bytes;

	snd_pcm_period_elapsed(rt5514_dsp->substream);

	if (rt5514_dsp->dsp_offset < rt5514_dsp->buf_size)

		schedule_delayed_work(&rt5514_dsp->copy_work, 5);

done:

	mutex_unlock(&rt5514_dsp->dma_lock);

}

/* PCM for streaming audio from the DSP buffer */

static int rt5514_spi_pcm_open(struct snd_pcm_substream *substream)

{

	snd_soc_set_runtime_hwparams(substream, &rt5514_spi_pcm_hardware);

	return 0;

}

static int rt5514_spi_hw_params(struct snd_pcm_substream *substream,

			       struct snd_pcm_hw_params *hw_params)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct rt5514_dsp *rt5514_dsp =

			snd_soc_platform_get_drvdata(rtd->platform);

	int ret;

	mutex_lock(&rt5514_dsp->dma_lock);

	ret = snd_pcm_lib_alloc_vmalloc_buffer(substream,

			params_buffer_bytes(hw_params));

	rt5514_dsp->substream = substream;

	mutex_unlock(&rt5514_dsp->dma_lock);

	return ret;

}

static int rt5514_spi_hw_free(struct snd_pcm_substream *substream)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct rt5514_dsp *rt5514_dsp =

			snd_soc_platform_get_drvdata(rtd->platform);

	mutex_lock(&rt5514_dsp->dma_lock);

	rt5514_dsp->substream = NULL;

	mutex_unlock(&rt5514_dsp->dma_lock);

	cancel_delayed_work_sync(&rt5514_dsp->copy_work);

	return snd_pcm_lib_free_vmalloc_buffer(substream);

}

static int rt5514_spi_prepare(struct snd_pcm_substream *substream)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct rt5514_dsp *rt5514_dsp =

			snd_soc_platform_get_drvdata(rtd->platform);

	u8 buf[8];

	rt5514_dsp->dma_offset = 0;

	rt5514_dsp->dsp_offset = 0;

	/**

	 * The address area x1800XXXX is the register address, and it cannot

	 * support spi burst read perfectly. So we use the spi burst read

	 * individually to make sure the data correctly.

	*/

	rt5514_spi_burst_read(RT5514_BUFFER_VOICE_BASE, (u8 *)&buf,

		sizeof(buf));

	rt5514_dsp->buf_base = buf[0] | buf[1] << 8 | buf[2] << 16 |

				buf[3] << 24;

	rt5514_spi_burst_read(RT5514_BUFFER_VOICE_LIMIT, (u8 *)&buf,

		sizeof(buf));

	rt5514_dsp->buf_limit = buf[0] | buf[1] << 8 | buf[2] << 16 |

				buf[3] << 24;

	rt5514_spi_burst_read(RT5514_BUFFER_VOICE_RP, (u8 *)&buf,

		sizeof(buf));

	rt5514_dsp->buf_rp = buf[0] | buf[1] << 8 | buf[2] << 16 |

				buf[3] << 24;

	rt5514_spi_burst_read(RT5514_BUFFER_VOICE_SIZE, (u8 *)&buf,

		sizeof(buf));

	rt5514_dsp->buf_size = buf[0] | buf[1] << 8 | buf[2] << 16 |

				buf[3] << 24;

	return 0;

}

static int rt5514_spi_trigger(struct snd_pcm_substream *substream, int cmd)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct rt5514_dsp *rt5514_dsp =

			snd_soc_platform_get_drvdata(rtd->platform);

	if (cmd == SNDRV_PCM_TRIGGER_START) {

		if (rt5514_dsp->buf_base && rt5514_dsp->buf_limit &&

			rt5514_dsp->buf_rp && rt5514_dsp->buf_size)

			schedule_delayed_work(&rt5514_dsp->copy_work, 0);

	}

	return 0;

}

static snd_pcm_uframes_t rt5514_spi_pcm_pointer(

		struct snd_pcm_substream *substream)

{

	struct snd_pcm_runtime *runtime = substream->runtime;

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct rt5514_dsp *rt5514_dsp =

		snd_soc_platform_get_drvdata(rtd->platform);

	return bytes_to_frames(runtime, rt5514_dsp->dma_offset);

}

static struct snd_pcm_ops rt5514_spi_pcm_ops = {

	.open		= rt5514_spi_pcm_open,

	.hw_params	= rt5514_spi_hw_params,

	.hw_free	= rt5514_spi_hw_free,

	.trigger	= rt5514_spi_trigger,

	.prepare	= rt5514_spi_prepare,

	.pointer	= rt5514_spi_pcm_pointer,

	.mmap		= snd_pcm_lib_mmap_vmalloc,

	.page		= snd_pcm_lib_get_vmalloc_page,

};

static int rt5514_spi_pcm_probe(struct snd_soc_platform *platform)

{

	struct rt5514_dsp *rt5514_dsp;

	rt5514_dsp = devm_kzalloc(platform->dev, sizeof(*rt5514_dsp),

			GFP_KERNEL);

	rt5514_dsp->dev = &rt5514_spi->dev;

	mutex_init(&rt5514_dsp->dma_lock);

	INIT_DELAYED_WORK(&rt5514_dsp->copy_work, rt5514_spi_copy_work);

	snd_soc_platform_set_drvdata(platform, rt5514_dsp);

	return 0;

}

static struct snd_soc_platform_driver rt5514_spi_platform = {

	.probe = rt5514_spi_pcm_probe,

	.ops = &rt5514_spi_pcm_ops,

};

static const struct snd_soc_component_driver rt5514_spi_dai_component = {

	.name		= "rt5514-spi-dai",

};

/**

 * rt5514_spi_burst_read - Read data from SPI by rt5514 address.

 * @addr: Start address.

 * @rxbuf: Data Buffer for reading.

 * @len: Data length, it must be a multiple of 8.

 *

 *

 * Returns true for success.

 */

int rt5514_spi_burst_read(unsigned int addr, u8 *rxbuf, size_t len)

{

	u8 spi_cmd = RT5514_SPI_CMD_BURST_READ;

	int status;

	u8 write_buf[8];

	unsigned int i, end, offset = 0;

	struct spi_message message;

	struct spi_transfer x[3];

	while (offset < len) {

		if (offset + RT5514_SPI_BUF_LEN <= len)

			end = RT5514_SPI_BUF_LEN;

		else

			end = len % RT5514_SPI_BUF_LEN;

		write_buf[0] = spi_cmd;

		write_buf[1] = ((addr + offset) & 0xff000000) >> 24;

		write_buf[2] = ((addr + offset) & 0x00ff0000) >> 16;

		write_buf[3] = ((addr + offset) & 0x0000ff00) >> 8;

		write_buf[4] = ((addr + offset) & 0x000000ff) >> 0;

		spi_message_init(&message);

		memset(x, 0, sizeof(x));

		x[0].len = 5;

		x[0].tx_buf = write_buf;

		spi_message_add_tail(&x[0], &message);

		x[1].len = 4;

		x[1].tx_buf = write_buf;

		spi_message_add_tail(&x[1], &message);

		x[2].len = end;

		x[2].rx_buf = rxbuf + offset;

		spi_message_add_tail(&x[2], &message);

		status = spi_sync(rt5514_spi, &message);

		if (status)

			return false;

		offset += RT5514_SPI_BUF_LEN;

	}

	for (i = 0; i < len; i += 8) {

		write_buf[0] = rxbuf[i + 0];

		write_buf[1] = rxbuf[i + 1];

		write_buf[2] = rxbuf[i + 2];

		write_buf[3] = rxbuf[i + 3];

		write_buf[4] = rxbuf[i + 4];

		write_buf[5] = rxbuf[i + 5];

		write_buf[6] = rxbuf[i + 6];

		write_buf[7] = rxbuf[i + 7];

		rxbuf[i + 0] = write_buf[7];

		rxbuf[i + 1] = write_buf[6];

		rxbuf[i + 2] = write_buf[5];

		rxbuf[i + 3] = write_buf[4];

		rxbuf[i + 4] = write_buf[3];

		rxbuf[i + 5] = write_buf[2];

		rxbuf[i + 6] = write_buf[1];

		rxbuf[i + 7] = write_buf[0];

	}

	return true;

}

/**

 * rt5514_spi_burst_write - Write data to SPI by rt5514 address.

 * @addr: Start address.

 * @txbuf: Data Buffer for writng.

 * @len: Data length, it must be a multiple of 8.

 *

 *

 * Returns true for success.

 */

int rt5514_spi_burst_write(u32 addr, const u8 *txbuf, size_t len)

{

	u8 spi_cmd = RT5514_SPI_CMD_BURST_WRITE;

	u8 *write_buf;

	unsigned int i, end, offset = 0;

	write_buf = kmalloc(RT5514_SPI_BUF_LEN + 6, GFP_KERNEL);

	if (write_buf == NULL)

		return -ENOMEM;

	while (offset < len) {

		if (offset + RT5514_SPI_BUF_LEN <= len)

			end = RT5514_SPI_BUF_LEN;

		else

			end = len % RT5514_SPI_BUF_LEN;

		write_buf[0] = spi_cmd;

		write_buf[1] = ((addr + offset) & 0xff000000) >> 24;

		write_buf[2] = ((addr + offset) & 0x00ff0000) >> 16;

		write_buf[3] = ((addr + offset) & 0x0000ff00) >> 8;

		write_buf[4] = ((addr + offset) & 0x000000ff) >> 0;

		for (i = 0; i < end; i += 8) {

			write_buf[i + 12] = txbuf[offset + i + 0];

			write_buf[i + 11] = txbuf[offset + i + 1];

			write_buf[i + 10] = txbuf[offset + i + 2];

			write_buf[i +  9] = txbuf[offset + i + 3];

			write_buf[i +  8] = txbuf[offset + i + 4];

			write_buf[i +  7] = txbuf[offset + i + 5];

			write_buf[i +  6] = txbuf[offset + i + 6];

			write_buf[i +  5] = txbuf[offset + i + 7];

		}

		write_buf[end + 5] = spi_cmd;

		spi_write(rt5514_spi, write_buf, end + 6);

		offset += RT5514_SPI_BUF_LEN;

	}

	kfree(write_buf);

	return 0;

}

EXPORT_SYMBOL_GPL(rt5514_spi_burst_write);

static int rt5514_spi_probe(struct spi_device *spi)

{

	int ret;

	rt5514_spi = spi;

	ret = devm_snd_soc_register_platform(&spi->dev, &rt5514_spi_platform);

	if (ret < 0) {

		dev_err(&spi->dev, "Failed to register platform.\n");

		return ret;

	}

	ret = devm_snd_soc_register_component(&spi->dev,

					      &rt5514_spi_dai_component,

					      &rt5514_spi_dai, 1);

	if (ret < 0) {

		dev_err(&spi->dev, "Failed to register component.\n");

		return ret;

	}

	return 0;

}

static const struct of_device_id rt5514_of_match[] = {

	{ .compatible = "realtek,rt5514", },

	{},

};

MODULE_DEVICE_TABLE(of, rt5514_of_match);

static struct spi_driver rt5514_spi_driver = {

	.driver = {

		.name = "rt5514",

		.of_match_table = of_match_ptr(rt5514_of_match),

	},

	.probe = rt5514_spi_probe,

};

module_spi_driver(rt5514_spi_driver);

MODULE_DESCRIPTION("RT5514 SPI driver");

MODULE_AUTHOR("Oder Chiou <oder_chiou@realtek.com>");

MODULE_LICENSE("GPL v2");