sdk-hwV1.3/lichee/linux-4.9/drivers/char/hichs-has/snd_has_play_sound.c

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/regmap.h>
#include <linux/of_address.h>
#include <sound/dmaengine_pcm.h>
#include <linux/dma-mapping.h>
#include <linux/kthread.h>
#include <linux/mtd/mtd.h>
// #include <linux/delay.h>
#include <linux/dma/sunxi-dma.h>
#include <linux/types.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/semaphore.h>

/* 引用全志驱动 */
#include "snd_has_sunxi_common.h"
#include "snd_has_sun8iw21_codec.h"

#define DRV_NAME "has-snd-codec"
/* all init code ref to snd_sun8iw21_codec.c */
#define DMA_ALLOC_SIZE 131072 // dma的buffer大小
#define FREQ_IN_OUT 24576000 // clk频率，同步全志驱动

/* 采样率16000，单声道，16bit */
#define SAMPLE_RATE 16000
#define PCM_FORMAT_BITS 16 // SNDRV_PCM_FORMAT_S16_LE
#define PCM_CHANNEL_NUMBER 1
#define SOUND_VOLUME (0x000000A2)// TODO:从806获取音量 0~0xFF，default 0xA0 

#define HAS_WAIT_WAKEUP_SRC_TIMEOUT 500 // ms
#define HAS_WAIT_PLAY_END_TIMEOUT 3000 // ms

#define WAKEUP_SOURCE_NONE 0x00 // 复位就是0
#define WAKEUP_SOURCE_TOUCH 0x01
#define WAKEUP_SOURCE_STREAM 0x02
#define WAKEUP_SOURCE_DOORBELL 0x03
#define WAKEUP_SOURCE_PEEPHOLE 0x04
#define WAKEUP_SOURCE_INVALID 0xFF // 无效值，忽略，表示已经获取过唤醒源

#define DOOLBELL_PARTITION_NAME "doorbell"

// TODO:可以动态分配管理全局变量,放入device数据中
static struct sunxi_has_mem g_mem;
static struct sunxi_has_clk g_clk;
static struct has_pa_config *g_pa_config = NULL;
static struct platform_device *g_pdev = NULL;
static unsigned int g_pa_pin_max = 0;

struct resource g_res;
static unsigned int g_reg_val = 0xA0;
static atomic_t g_wakeup_src = ATOMIC_INIT(0);
// static atomic_t g_wakeup_src;

static DECLARE_COMPLETION(kill_doorbell);
static DECLARE_COMPLETION(relase_done);
static DECLARE_COMPLETION(wakeup_get);

/* WAV文件格式 */
#pragma pack(1)
struct wav_header_t {
    char     riff[4];        // "RIFF"
    uint32_t file_size;      // 文件总大小 - 8
    char     wave[4];        // "WAVE"
    char     fmt[4];         // "fmt "
    uint32_t fmt_size;       // fmt块大小（16 for PCM）
    uint16_t audio_format;   // 1 for PCM
    uint16_t num_channels;   // 声道数
    uint32_t sample_rate;    // 采样率
    uint32_t byte_rate;      // 每秒字节数（sample_rate * block_align）
    uint16_t block_align;    // 每样本字节数（bits_per_sample/8 * num_channels）
    uint16_t bits_per_sample;// 位深
    char     data[4];        // "data"
    uint32_t data_size;      // PCM数据大小
};
#pragma pack()

struct sample_rate
{
	unsigned int samplerate;
	unsigned int rate_bit;
};

static const struct sample_rate sample_rate_conv[] = {
	{8000, 5},
	{11025, 4},
	{12000, 4},
	{16000, 3},
	{22050, 2},
	{24000, 2},
	{32000, 1},
	{44100, 0},
	{48000, 0},
	{96000, 7},
	{192000, 6},
};

/* soc寄存器参数 */
static struct regmap_config g_regmap_config = {
	.reg_bits = 32,
	.reg_stride = 4,
	.val_bits = 32,
	.max_register = SUNXI_CODEC_REG_MAX,
	.cache_type = REGCACHE_NONE,
};

static struct dma_slave_config slave_config = {
	.direction = DMA_MEM_TO_DEV,
	.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
	.device_fc = 0,
	.dst_addr = 0x02030020, // DMA寄存器地址 ref to datasheet
	.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
	.slave_id = sunxi_slave_id(DRQDST_AUDIO_CODEC, DRQSRC_SDRAM), // 全志DMA controller ID
	.dst_maxburst = 4,
	.src_maxburst = 4,
};

void doorbell_control(unsigned char wakeup_src) {
	if (wakeup_src == WAKEUP_SOURCE_DOORBELL)
	{
		atomic_set(&g_wakeup_src, wakeup_src);
	}
	complete(&wakeup_get);
}
EXPORT_SYMBOL(doorbell_control);

static void snd_sunxi_has_mem_deinit(struct platform_device *pdev)
{
	devm_iounmap(&pdev->dev, g_mem.membase);
	devm_release_mem_region(&pdev->dev, g_mem.memregion->start, resource_size(g_mem.memregion));
}

static void snd_sunxi_has_clk_deinit(void)
{
	clk_disable_unprepare(g_clk.adcclk); // disable + unprepare
	clk_disable_unprepare(g_clk.dacclk);
	clk_disable_unprepare(g_clk.pllaudio);
	clk_put(g_clk.adcclk); // free
	clk_put(g_clk.dacclk);
	clk_put(g_clk.pllaudio);
}

static void snd_sunxi_has_pa_deinit(struct platform_device *pdev, struct has_pa_config *pa_config)
{
	int i;
	if (pa_config == NULL)
	{
		return;
	}

	for (i = 0; i < g_pa_pin_max; i++) {
		if (!pa_config[i].used)
			continue;

		devm_gpio_free(&pdev->dev, pa_config[i].pin);
	}
	kfree(pa_config);
}

static int has_free_own_device(struct platform_device *pdev)
{
	if (pdev == NULL)
	{
		pr_emerg("pdev is NULL\n");
		return -1;
	}
	/* set default volume */
	regmap_update_bits(g_mem.regmap, SUNXI_DAC_VOL_CTRL, 0x0000FFFF, g_reg_val);
	/* clk */
	snd_sunxi_has_clk_deinit();
	/* memery io unmap */
	snd_sunxi_has_mem_deinit(pdev);
	/* TODO:regulator, 可以不用去初始化 */
	/* pa pin free， 不需要关闭pa引脚 */
	snd_sunxi_has_pa_deinit(pdev, g_pa_config);
	g_pa_config = NULL;
	return 0;
}

static void has_dma_complete(void *arg)
{
	// enum dma_status status;
	// struct dma_tx_state state;
	complete(&kill_doorbell);
	// status = dmaengine_tx_status(dma_chan, dma_cookie, &state);
	// pr_emerg("status:%d residue:%d\n", status, state.residue);
}

static size_t has_decode_WAV_and_getPCM(unsigned char *pcm_data)
{
	struct mtd_info *mtd;
	size_t retlen = 0;
	struct wav_header_t wav_header;

	mtd = get_mtd_device_nm(DOOLBELL_PARTITION_NAME); // 名称
	if (IS_ERR(mtd))
	{
		pr_emerg("Failed to get MTD device: %ld\n", PTR_ERR(mtd));
		return -1;
	}
	mtd_read(mtd, 0, sizeof(struct wav_header_t), &retlen, (unsigned char *)&wav_header);
	if (retlen != sizeof(struct wav_header_t))
	{
		pr_emerg("read err wav!");
		return -1;
	}
	if ((memcmp(wav_header.riff, "RIFF", sizeof(wav_header.riff)) != 0) || (memcmp(wav_header.wave, "WAVE", sizeof(wav_header.wave)) != 0)
	|| (memcmp(wav_header.fmt, "fmt ", sizeof(wav_header.fmt)) != 0) || ((wav_header.file_size + 8 - sizeof(struct wav_header_t)) != wav_header.data_size)
	|| (wav_header.audio_format != 1) || (wav_header.num_channels != PCM_CHANNEL_NUMBER) || (wav_header.sample_rate != SAMPLE_RATE)
	|| (wav_header.bits_per_sample != PCM_FORMAT_BITS) || (memcmp(wav_header.data, "data", sizeof(wav_header.data)) != 0))
	{
		pr_emerg("WAV format error, please check the wav file or fix this driver to adapt different sample data.\n");
		pr_emerg("this driver supports bits:%d channel:%d sample rate:%d\n", PCM_FORMAT_BITS, PCM_CHANNEL_NUMBER, SAMPLE_RATE);
		return -1;
	}
#if 0
	// pr_emerg("riff:%s\n", wav_header.riff);
	pr_emerg("file size:%d\n", wav_header.file_size);
	// pr_emerg("wave:%s\n", wav_header.wave);
	// pr_emerg("fmt:%s\n", wav_header.fmt);
	pr_emerg("fmt size:%d\n", wav_header.fmt_size);
	pr_emerg("audio format:%d\n", wav_header.audio_format);
	pr_emerg("channel:%d\n", wav_header.num_channels);
	pr_emerg("sample rate:%d\n", wav_header.sample_rate);
	pr_emerg("bps:%d\n", wav_header.byte_rate);
	pr_emerg("sample bytes:%d\n", wav_header.block_align);
	pr_emerg("bits:%d\n", wav_header.bits_per_sample);
	// pr_emerg("data:%s\n", wav_header.data);
	pr_emerg("pcm size:%d\n", wav_header.data_size);
#endif
	if (wav_header.data_size > DMA_ALLOC_SIZE) // 限制128K
	{
		pr_emerg("file size(%d) out of limit(%d)\n", wav_header.data_size, DMA_ALLOC_SIZE);
		return -1;
	}
	mtd_read(mtd, sizeof(struct wav_header_t), wav_header.data_size, &retlen, (unsigned char *)pcm_data);
	if (retlen != wav_header.data_size)
	{
		pr_emerg("read pcm err\n");
		return -1;
	}
	return (size_t)wav_header.data_size;
}

static int snd_has_pcm_playsound(void *param)
{
	int ret;
	struct dma_async_tx_descriptor *desc = NULL;
	struct dma_chan *dma_chan = NULL;

	size_t pcm_len = 0;

	dma_cap_mask_t mask;
	dma_addr_t dma_addr = 0;
	unsigned char *dma_area = NULL;

	wait_for_completion_interruptible_timeout(&wakeup_get, msecs_to_jiffies(HAS_WAIT_WAKEUP_SRC_TIMEOUT));
	if (atomic_read(&g_wakeup_src) != WAKEUP_SOURCE_DOORBELL)
	{
		goto skip_doorbell;
	}

	dma_area = dma_alloc_coherent(NULL, DMA_ALLOC_SIZE, &dma_addr, GFP_KERNEL); // 申请dma
	// pr_emerg("dma_area:0x%x dma_addr:0x%x\n", (int)dma_area, (int)dma_addr);
	if ((!dma_area) || (!dma_addr))
	{
		pr_emerg("malloc dma buffer err!\n");
		goto err_alloc_init;
	}
	pcm_len = has_decode_WAV_and_getPCM(dma_area);
	if (pcm_len == -1)
	{
		goto err_read_init;
	}
	dma_cap_zero(mask);
	dma_cap_set(DMA_SLAVE, mask);
	dma_cap_set(DMA_CYCLIC, mask); // DMA_LINEAR
	dma_chan = dma_request_channel(mask, NULL, NULL);

	if (!dma_chan)
	{
		pr_emerg("dma_request_channel err\n");
		goto err_request_init;
	}

	ret = dmaengine_slave_config(dma_chan, &slave_config);
	if (ret < 0)
	{
		pr_emerg("dma slave config failed, err %d\n", ret);
		goto err_config_init;
	}

	desc = dmaengine_prep_dma_cyclic(dma_chan,
									 dma_addr,
									 pcm_len, // buffersize*2（7680*2）
									 pcm_len, // periodsize*2(960*2)
									 DMA_MEM_TO_DEV, DMA_CTRL_ACK | DMA_PREP_INTERRUPT);
	if (!desc)
	{
		pr_emerg("dmaengine_prep_dma_cyclic err!\n");
		goto err_desc_init;
	}
	desc->callback = has_dma_complete;
	desc->callback_param = NULL;
	msleep(10); // 要延时，否则会导致前面一小段音缺失

	dmaengine_submit(desc);
	// dma_cookie = dmaengine_submit(desc);

	dma_async_issue_pending(dma_chan);
	// pr_emerg("plad sound start!\n");

	wait_for_completion_interruptible_timeout(&kill_doorbell, msecs_to_jiffies(HAS_WAIT_PLAY_END_TIMEOUT));
	// dmaengine_synchronize(dma_chan);
	dmaengine_terminate_async(dma_chan);


	dma_release_channel(dma_chan);
	dma_free_coherent(NULL, DMA_ALLOC_SIZE, dma_area, dma_addr); // 如果有申请就删除
	has_free_own_device(g_pdev);
	g_pdev = NULL;
	complete(&relase_done);
	// pr_emerg("plad sound end!\n");
	return 0;

err_desc_init:
err_config_init:
err_request_init:
	dma_release_channel(dma_chan);
err_read_init:
	dma_free_coherent(NULL, DMA_ALLOC_SIZE, dma_area, dma_addr);
err_alloc_init:
skip_doorbell:
	has_free_own_device(g_pdev);
	g_pdev = NULL;
	complete(&relase_done);
	return -1;
}

static void has_start_dma_codec(void)
{
	struct task_struct *snd_thread = NULL;


	snd_thread = kthread_create(snd_has_pcm_playsound, NULL, "has_sound");
	if (IS_ERR(snd_thread))
	{
		snd_thread = NULL;
		pr_warning("unable to start kernel process_file\n");
	}
	else
	{
		wake_up_process(snd_thread);
	}
}

static int snd_sunxi_clk_enable(struct platform_device *pdev, struct sunxi_has_clk *clk)
{
	int ret = 0;

	/* (22579200 or 24576000) * n */
	if (clk_set_rate(clk->pllaudio, 22579200))
	{
		pr_emerg("pllaudio set rate failed\n");
		goto err_set_rate;
	}

	if (clk_prepare_enable(clk->pllaudio))
	{
		pr_emerg("pllaudio enable failed\n");
		goto err_enable_pllaudio;
	}

	if (clk_prepare_enable(clk->dacclk))
	{
		pr_emerg("dacclk enable failed\n");
		goto err_enable_dacclk;
	}

	if (clk_prepare_enable(clk->adcclk))
	{
		pr_emerg("adcclk enable failed\n");
		goto err_enable_adcclk;
	}

	return 0;

err_enable_adcclk:
	clk_disable_unprepare(clk->dacclk);
err_enable_dacclk:
	clk_disable_unprepare(clk->pllaudio);
err_enable_pllaudio:
err_set_rate:
	return ret;
}

/*******************************************************************************
 * *** kernel source ***
 * @1 regmap
 * @2 clk
 * @3 regulator
 * @4 pa pin
 * @5 dts params
 ******************************************************************************/
static int snd_sunxi_has_clk_init(struct platform_device *pdev, struct sunxi_has_clk *clk)
{
	int ret = 0;
	struct device_node *np = pdev->dev.of_node;

	clk->pllaudio = of_clk_get(np, 0);
	if (IS_ERR_OR_NULL(clk->pllaudio))
	{
		pr_emerg("pllaudio get failed\n");
		ret = PTR_ERR(clk->pllaudio);
		goto err_pllaudio;
	}
	clk->dacclk = of_clk_get(np, 1);
	if (IS_ERR_OR_NULL(clk->dacclk))
	{
		pr_emerg("dacclk get failed\n");
		ret = PTR_ERR(clk->dacclk);
		goto err_dacclk;
	}
	clk->adcclk = of_clk_get(np, 2);
	if (IS_ERR_OR_NULL(clk->adcclk))
	{
		pr_emerg("adcclk get failed\n");
		ret = PTR_ERR(clk->adcclk);
		goto err_adcclk;
	}

	if (clk_set_parent(clk->dacclk, clk->pllaudio))
	{
		pr_emerg("set parent of dacclk to pllaudio failed\n");
		ret = -EINVAL;
		goto err_set_parent;
	}
	if (clk_set_parent(clk->adcclk, clk->pllaudio))
	{
		pr_emerg("set parent of adcclk to pllaudio failed\n");
		ret = -EINVAL;
		goto err_set_parent;
	}

	ret = snd_sunxi_clk_enable(pdev, clk);
	if (ret)
	{
		pr_emerg("clk enable failed\n");
		ret = -EINVAL;
		goto err_clk_enable;
	}

	return 0;

err_clk_enable:
err_set_parent:
	clk_put(clk->adcclk);
err_adcclk:
	clk_put(clk->dacclk);
err_dacclk:
	clk_put(clk->pllaudio);
err_pllaudio:
	return ret;
}

static int snd_sunxi_has_regulator_init(struct platform_device *pdev, struct sunxi_regulator *rglt)
{
	int ret = 0;
	unsigned int temp_val;
	struct device_node *np = pdev->dev.of_node;

	rglt->external_avcc = of_property_read_bool(np, "external-avcc");
	ret = of_property_read_u32(np, "avcc-vol", &temp_val);
	if (ret < 0)
	{
		/* default avcc voltage: 1.8v */
		rglt->avcc_vol = 1800000;
	}
	else
	{
		rglt->avcc_vol = temp_val;
	}

	if (rglt->external_avcc)
	{
		rglt->avcc = regulator_get(&pdev->dev, "avcc");
		if (IS_ERR_OR_NULL(rglt->avcc))
		{
			return 0;
		}
	}
	else
	{
		return 0;
	}

	ret = regulator_set_voltage(rglt->avcc, rglt->avcc_vol, rglt->avcc_vol);
	if (ret < 0)
	{
		pr_emerg("set avcc voltage failed\n");
		ret = -EFAULT;
		goto err_regulator_set_vol_avcc;
	}
	ret = regulator_enable(rglt->avcc);
	if (ret < 0)
	{
		pr_emerg("enable avcc failed\n");
		ret = -EFAULT;
		goto err_regulator_enable_avcc;
	}

	return 0;

err_regulator_enable_avcc:
err_regulator_set_vol_avcc:
	if (rglt->avcc)
		regulator_put(rglt->avcc);
	return ret;
}

/* for regmap */
static int snd_has_sunxi_mem_init(struct platform_device *pdev, struct sunxi_has_mem *mem)
{
	int ret = 0;
	struct device_node *np = pdev->dev.of_node;

	ret = of_address_to_resource(np, 0, mem->res);
	if (ret)
	{
		pr_emerg("parse device node resource failed\n");
		ret = -EINVAL;
		goto err_of_addr_to_resource;
	}

	mem->memregion = devm_request_mem_region(&pdev->dev, mem->res->start,
											 resource_size(mem->res), mem->dev_name);
	if (IS_ERR_OR_NULL(mem->memregion))
	{
		pr_emerg("memory region already claimed\n");
		ret = -EBUSY;
		goto err_devm_request_region;
	}

	mem->membase = devm_ioremap(&pdev->dev, mem->memregion->start,
								resource_size(mem->memregion));
	if (IS_ERR_OR_NULL(mem->membase))
	{
		pr_emerg("ioremap failed\n");
		ret = -EBUSY;
		goto err_devm_ioremap;
	}

	mem->regmap = devm_regmap_init_mmio(&pdev->dev, mem->membase, mem->regmap_config);
	if (IS_ERR_OR_NULL(mem->regmap))
	{
		pr_emerg("regmap init failed\n");
		ret = -EINVAL;
		goto err_devm_regmap_init;
	}

	return 0;

err_devm_regmap_init:
	devm_iounmap(&pdev->dev, mem->membase);
err_devm_ioremap:
	devm_release_mem_region(&pdev->dev, mem->memregion->start, resource_size(mem->memregion));
err_devm_request_region:
err_of_addr_to_resource:
	return ret;
}

static int snd_has_sunxi_pa_pin(struct has_pa_config *pa_cfg, u32 pa_pin_max, u8 enable)
{
	int i;

	if (pa_pin_max < 1)
	{
		return 0;
	}

	if (enable)
	{
		msleep(pa_cfg[0].msleep);
	}

	for (i = 0; i < pa_pin_max; i++)
	{
		if (!pa_cfg[i].used)
			continue;

		gpio_direction_output(pa_cfg[i].pin, 1);
		if (enable)
			gpio_set_value(pa_cfg[i].pin, pa_cfg[i].level);
		else
			gpio_set_value(pa_cfg[i].pin, !pa_cfg[i].level);
	}

	return 0;
}


/* for pa config */
static struct has_pa_config *snd_has_sunxi_pa_pin_init(struct platform_device *pdev,
													   u32 *pa_pin_max)
{
	int ret, i;
	u32 pin_max;
	u32 gpio_tmp;
	u32 temp_val;
	char str[20] = {0};
	struct has_pa_config *pa_cfg;
	struct device_node *np = pdev->dev.of_node;

	*pa_pin_max = 0;
	ret = of_property_read_u32(np, "pa-pin-max", &temp_val);
	if (ret < 0)
	{
		return NULL;
	}
	else
	{
		pin_max = temp_val;
	}

	pa_cfg = kzalloc(sizeof(struct has_pa_config) * pin_max, GFP_KERNEL);
	if (!pa_cfg)
	{
		pr_emerg("can't has_pa_config memory\n");
		return NULL;
	}

	for (i = 0; i < pin_max; i++)
	{
		sprintf(str, "pa-pin-%d", i);
		ret = of_get_named_gpio(np, str, 0);
		if (ret < 0)
		{
			pr_emerg("pa-pin-%u get failed\n", i);
			pa_cfg[i].used = 0;
			continue;
		}
		gpio_tmp = ret;
		if (!gpio_is_valid(gpio_tmp))
		{
			pr_emerg("pa-pin-%u (%u) is invalid\n", i, gpio_tmp);
			pa_cfg[i].used = 0;
			continue;
		}
		ret = devm_gpio_request(&pdev->dev, gpio_tmp, str);
		if (ret)
		{
			pr_emerg("pa-pin-%u (%u) request failed\n", i, gpio_tmp);
			pa_cfg[i].used = 0;
			continue;
		}
		pa_cfg[i].used = 1;
		pa_cfg[i].pin = gpio_tmp;

		sprintf(str, "pa-pin-level-%d", i);
		ret = of_property_read_u32(np, str, &temp_val);
		if (ret < 0)
		{
			pa_cfg[i].level = 0;
		}
		else
		{
			if (temp_val > 0)
				pa_cfg[i].level = 1;
		}
		sprintf(str, "pa-pin-msleep-%d", i);
		ret = of_property_read_u32(np, str, &temp_val);
		if (ret < 0)
		{
			pa_cfg[i].msleep = 0;
		}
		else
		{
			pa_cfg[i].msleep = temp_val;
		}
	}

	*pa_pin_max = pin_max;
	snd_has_sunxi_pa_pin(pa_cfg, pin_max, 0);

	return pa_cfg;
}


static void snd_sunxi_has_dts_params_init(struct platform_device *pdev, struct sunxi_has_dts *dts)
{
	int ret = 0;
	unsigned int temp_val;
	struct device_node *np = pdev->dev.of_node;

	/* lineout volume */
	ret = of_property_read_u32(np, "lineout-vol", &temp_val);
	if (ret < 0)
	{
		dts->lineout_vol = 0;
	}
	else
	{
		dts->lineout_vol = temp_val;
	}

	/* mic gain for capturing */
	ret = of_property_read_u32(np, "mic1gain", &temp_val);
	if (ret < 0)
	{
		dts->mic1gain = 31;
	}
	else
	{
		dts->mic1gain = temp_val;
	}
	ret = of_property_read_u32(np, "mic2gain", &temp_val);
	if (ret < 0)
	{
		dts->mic2gain = 31;
	}
	else
	{
		dts->mic2gain = temp_val;
	}

	ret = of_property_read_u32(np, "adcdelaytime", &temp_val);
	if (ret < 0)
	{
		dts->adc_dtime = 0;
	}
	else
	{
		switch (temp_val)
		{
		case 0:
		case 5:
		case 10:
		case 20:
		case 30:
			dts->adc_dtime = temp_val;
			break;
		default:
			pr_emerg("adc delay time supoort only 0,5,10,20,30ms\n");
			dts->adc_dtime = 0;
			break;
		}
	}

	/* lineout & mic1 & mic2 diff or single */
	dts->lineout_single = of_property_read_bool(np, "lineout-single");
	dts->mic1_single = of_property_read_bool(np, "mic1-single");
	dts->mic2_single = of_property_read_bool(np, "mic2-single");

	/* tx_hub */
	dts->tx_hub_en = of_property_read_bool(np, "tx-hub-en");

	/* components func -> rx_sync */
	dts->rx_sync_en = of_property_read_bool(np, "rx-sync-en");
	if (dts->rx_sync_en)
	{
		dts->rx_sync_ctl = false;
	}
}

static int has_trigger_codec(void)
{
	int i;
	// unsigned int reg_val;
	struct regmap *regmap = g_mem.regmap;
	/* 1 */
	// regmap_read(regmap, SUNXI_DAC_DPC, &reg_val); // reg_val:0x80000001
	/* 2 */
	regmap_update_bits(regmap, SUNXI_DAC_DPC, 0x1 << DAC_HUB_EN, 0x1 << DAC_HUB_EN);
	regmap_update_bits(regmap, SUNXI_DAC_DPC, 0x1 << EN_DAC, 0x1 << EN_DAC);
	regmap_update_bits(regmap, SUNXI_DAC_REG, 0x1 << DACLMUTE, 0x1 << DACLMUTE);
	regmap_update_bits(regmap, SUNXI_DAC_REG, 0x1 << DACLEN, 0x1 << DACLEN);
	regmap_update_bits(regmap, SUNXI_DAC_REG, 0x1 << LINEOUTLEN, 0x1 << LINEOUTLEN);
	/* 3 */
	/* capture */
	/* 4 */
	if (clk_set_rate(g_clk.pllaudio, FREQ_IN_OUT))
	{
		pr_emerg("pllaudio set rate failed\n");
		return -EINVAL;
	}

	if (clk_set_rate(g_clk.dacclk, FREQ_IN_OUT))
	{
		pr_emerg("dacclk set rate failed\n");
		return -EINVAL;
	}
	/* 5 */
	/* set bits */
#if (PCM_FORMAT_BITS != 16)
#error "change code here to adapt format bits"
#endif
	regmap_update_bits(regmap, SUNXI_DAC_FIFOC, 3 << FIFO_MODE, 3 << FIFO_MODE);
	regmap_update_bits(regmap, SUNXI_DAC_FIFOC, 1 << TX_SAMPLE_BITS, 0 << TX_SAMPLE_BITS);
	/* set rate */
	for (i = 0; i < ARRAY_SIZE(sample_rate_conv); i++)
	{
		if (sample_rate_conv[i].samplerate == SAMPLE_RATE)
		{
			regmap_update_bits(regmap, SUNXI_DAC_FIFOC, 0x7 << DAC_FS, sample_rate_conv[i].rate_bit << DAC_FS);
		}
	}
#if (SAMPLE_RATE != 16000)
#error "change code here to adapt sample rate"
#endif
	/* reset the adchpf func setting for different sampling. case 16000:*/
	regmap_write(regmap, SUNXI_ADC_DRC_HHPFC, (0x00F623A5 >> 16) & 0xFFFF);
	regmap_write(regmap, SUNXI_ADC_DRC_LHPFC, 0x00F623A5 & 0xFFFF);
	/* set channels. case 1: one channel, DACL & DACR send same data */
#if (PCM_CHANNEL_NUMBER != 1)
#error "change code here to adapt channel"
#endif
	regmap_update_bits(regmap, SUNXI_DAC_FIFOC, 0x1 << DAC_MONO_EN, 0x1 << DAC_MONO_EN);
	/* 6 */
	regmap_update_bits(regmap, SUNXI_DAC_FIFOC, 1 << FIFO_FLUSH, 1 << FIFO_FLUSH);
	regmap_write(regmap, SUNXI_DAC_FIFOS, 1 << DAC_TXE_INT | 1 << DAC_TXU_INT | 1 << DAC_TXO_INT);
	regmap_write(regmap, SUNXI_DAC_CNT, 0);
	/* 7 */
	regmap_update_bits(regmap, SUNXI_DAC_REG, 0x1 << DACLEN, 0x1 << DACLEN);
	regmap_update_bits(regmap, SUNXI_DAC_REG, 0x1 << DACLMUTE, 0x1 << DACLMUTE);
	regmap_update_bits(regmap, SUNXI_DAC_DPC, 0x1 << EN_DAC, 0x1 << EN_DAC);
	/* 8 */
	regmap_update_bits(regmap, SUNXI_DAC_REG, 0x1 << LINEOUTLEN, 0x1 << LINEOUTLEN);
	/* 9 */
	snd_has_sunxi_pa_pin(g_pa_config, g_pa_pin_max, 1);
	/* 10 */
	regmap_update_bits(regmap, SUNXI_DAC_FIFOC, 1 << DAC_DRQ_EN, 1 << DAC_DRQ_EN);

	return 0;
}

static void sunxi_has_codec_init(struct sunxi_has_dts *dts)
{
	unsigned int adc_dtime_map;
	struct regmap *regmap = g_mem.regmap;
	regmap_update_bits(regmap, SUNXI_POWER_REG, 0x7 << ALDO_OUTPUT_VOLTAGE, 3 << ALDO_OUTPUT_VOLTAGE);
	regmap_update_bits(regmap, SUNXI_POWER_REG, 0x1 << ALDO_EN, 0x1 << ALDO_EN);
	regmap_update_bits(regmap, SUNXI_RAMP_REG, 0x1 << RMC_EN, 0x1 << RMC_EN);
	regmap_update_bits(regmap, SUNXI_ADC_FIFOC, 0x1 << ADCDFEN, 0x1 << ADCDFEN);
	switch (dts->adc_dtime)
	{
	case 5:
		adc_dtime_map = 0;
		break;
	case 10:
		adc_dtime_map = 1;
		break;
	case 20:
		adc_dtime_map = 2;
		break;
	case 30:
		adc_dtime_map = 3;
		break;
	case 0:
	default:
		regmap_update_bits(regmap, SUNXI_ADC_FIFOC, 0x1 << ADCDFEN, 0x0 << ADCDFEN);
		break;
	}
	regmap_update_bits(regmap, SUNXI_ADC_FIFOC, 0x3 << ADCFDT, adc_dtime_map << ADCFDT);
	regmap_update_bits(regmap, SUNXI_ADC_FIFOC, 0x1 << RX_SYNC_EN, 0x0 << RX_SYNC_EN);

	/* Digital VOL defeult setting */
	regmap_update_bits(regmap, SUNXI_DAC_DPC, 0x3F << DVOL, 0 << DVOL);

	/* LINEOUT VOL defeult setting */
	regmap_update_bits(regmap, SUNXI_DAC_REG, 0x1F << LINEOUT_VOL,
					   dts->lineout_vol << LINEOUT_VOL);

	/* ADCL MIC1 gain defeult setting */
	regmap_update_bits(regmap, SUNXI_ADC1_REG, 0x1F << ADC1_PGA_GAIN_CTRL, dts->mic1gain << ADC1_PGA_GAIN_CTRL);
	/* ADCR MIC2 gain defeult setting */
	regmap_update_bits(regmap, SUNXI_ADC2_REG, 0x1F << ADC2_PGA_GAIN_CTRL, dts->mic2gain << ADC2_PGA_GAIN_CTRL);

	/* ADC IOP params default setting */
	regmap_update_bits(regmap, SUNXI_ADC1_REG, 0xFF << ADC1_IOPMIC, 0x55 << ADC1_IOPMIC);
	regmap_update_bits(regmap, SUNXI_ADC2_REG, 0xFF << ADC2_IOPMIC, 0x55 << ADC2_IOPMIC);

	/* lineout & mic1 & mic2 diff or single setting */
	if (dts->lineout_single)
		regmap_update_bits(regmap, SUNXI_DAC_REG,
						   0x1 << LINEOUTLDIFFEN, 0x0 << LINEOUTLDIFFEN);
	else
		regmap_update_bits(regmap, SUNXI_DAC_REG,
						   0x1 << LINEOUTLDIFFEN, 0x1 << LINEOUTLDIFFEN);
	if (dts->mic1_single)
		regmap_update_bits(regmap, SUNXI_ADC1_REG,
						   0x1 << MIC1_SIN_EN, 0x1 << MIC1_SIN_EN);
	else
		regmap_update_bits(regmap, SUNXI_ADC1_REG,
						   0x1 << MIC1_SIN_EN, 0x0 << MIC1_SIN_EN);
	if (dts->mic2_single)
		regmap_update_bits(regmap, SUNXI_ADC2_REG,
						   0x1 << MIC2_SIN_EN, 0x1 << MIC2_SIN_EN);
	else
		regmap_update_bits(regmap, SUNXI_ADC2_REG,
						   0x1 << MIC2_SIN_EN, 0x0 << MIC2_SIN_EN);

	regmap_update_bits(regmap, SUNXI_DAC_VOL_CTRL, 1 << DAC_VOL_SEL, 1 << DAC_VOL_SEL);
	regmap_update_bits(regmap, SUNXI_ADC_DIG_CTRL, 1 << ADC1_2_VOL_EN, 1 << ADC1_2_VOL_EN);
	regmap_read(regmap, SUNXI_DAC_VOL_CTRL, &g_reg_val);
	// reg_R_val = (g_reg_val & 0xFF);
	// reg_L_val = ((g_reg_val >> 8) & 0xFF);
	// pr_emerg("reg_val:0x%08x, L:0x%02x R:0x%02x\n", reg_val, reg_L_val, reg_R_val);
	// regmap_update_bits(regmap, SUNXI_DAC_VOL_CTRL, 0x000000FF, SOUND_VOLUME); // R
	regmap_update_bits(regmap, SUNXI_DAC_VOL_CTRL, 0x0000FFFF, (SOUND_VOLUME << 8 | SOUND_VOLUME)); // L
}

static int doolbell_drv_open(struct inode *node, struct file *file)
{
	// printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
	return 0;
}

static int doolbell_drv_close(struct inode *node, struct file *file)
{
	// printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
	return 0;
}

#define DOOLBELL_STOP _IOWR('D', 100, unsigned int)
#define DOOLBELL_GET_STATUS _IOR('D', 101, unsigned int)
#define DOOLBELL_PLAYING 0
#define DOOLBELL_DONE 1

static long doolbell_drv_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	int value;
    switch (cmd) {
    case DOOLBELL_STOP: {
		complete(&kill_doorbell);
		complete(&wakeup_get);
		wait_for_completion_interruptible(&relase_done);
		if (g_pdev != NULL)
		{
			return -EINVAL;
		}

        break;
    }
    case DOOLBELL_GET_STATUS: {
		/* 用户态应该轮询查询状态，轮询不用考虑并发读取g_pdev */
		if (g_pdev != NULL) // 启动门铃流程未结束
		{
			value = DOOLBELL_PLAYING;
		}
		else // 启动门铃流程已经结束
		{
			value = DOOLBELL_DONE;
		}
		if (copy_to_user((char __user *)arg, &value, sizeof(value)))
		{
			return -EINVAL;
		}
        break;
    }

    default:
		return -EINVAL;
        break;
    }

    return 0;
}

static struct file_operations doorbell_drv = {
	.owner	 = THIS_MODULE,
	.open    = doolbell_drv_open,
	.release = doolbell_drv_close,
	.unlocked_ioctl = doolbell_drv_ioctl,
};

static int has_play_sound_dev_probe(struct platform_device *pdev)
{
	struct sunxi_regulator rglt;
	struct device_node *np;
	unsigned int temp_val = 0;
	struct sunxi_has_dts temp_dts;
	int major = 0;
	struct class *doorbell_class;

	g_pdev = pdev;
	g_mem.dev_name = DRV_NAME;
	g_mem.res = &g_res;
	g_mem.regmap_config = &g_regmap_config;
	// atomic_set(&g_wakeup_src, WAKEUP_SOURCE_NONE);

	np = of_find_compatible_node(NULL, NULL, "allwinner,sunxi-snd-plat-aaudio");
	if (np) {
		if (of_property_read_u32(np, "dac-txdata", &temp_val) < 0) {
			pr_emerg("get dac-txdata err!\n");
		}
		else
		{
			slave_config.dst_addr = temp_val;
		}
	}

	/* 寄存器地址 */
	if (snd_has_sunxi_mem_init(pdev, &g_mem))
	{
		goto err_mem_init;
	}

	/* 时钟初始化 */
	if (snd_sunxi_has_clk_init(pdev, &g_clk))
	{
		goto err_clk_init;
	}

	/* 低压差线性稳压器 */
	if (snd_sunxi_has_regulator_init(pdev, &rglt))
	{
		goto err_regulator_init;
	}

	/* pa引脚 */
	g_pa_config = snd_has_sunxi_pa_pin_init(pdev, &g_pa_pin_max);
	if (g_pa_config == NULL)
	{
		goto err_pa_init;
	}
	snd_sunxi_has_dts_params_init(pdev, &temp_dts);
	/* codec 初始化 */
	sunxi_has_codec_init(&temp_dts);

	has_trigger_codec();

	major = register_chrdev(0, "doorbell", &doorbell_drv);
	doorbell_class = class_create(THIS_MODULE, "doorbell_class");
	if (IS_ERR(doorbell_class)) {
		unregister_chrdev(major, "doorbell");
		goto err_pa_init;
	}
	device_create(doorbell_class, NULL, MKDEV(major, 0), NULL, "doorbell");

	has_start_dma_codec();
	return 0;

err_pa_init:
err_regulator_init:
err_clk_init:
	snd_sunxi_has_clk_deinit();
err_mem_init:
	snd_sunxi_has_mem_deinit(pdev);
	g_pdev = NULL;
	return -EINVAL;
}

static int has_play_sound_dev_remove(struct platform_device *pdev)
{
	// has_free_own_device(pdev);
	// device_destroy(doorbell_class, MKDEV(major, 0));
	// class_destroy(doorbell_class);
	// unregister_chrdev(major, "doorbell");
	return 0;
}

 // 使用全志codec寄存器
static const struct of_device_id has_play_sound_of_match[] = {
	{
		.compatible = "has," DRV_NAME,
	},
	{},
};
MODULE_DEVICE_TABLE(of, has_play_sound_of_match);

static struct platform_driver has_play_sond_driver = {
	.driver = {
		.name = DRV_NAME,
		.owner = THIS_MODULE,
		.of_match_table = has_play_sound_of_match,
	},
	.probe = has_play_sound_dev_probe,
	.remove = has_play_sound_dev_remove,
};

module_platform_driver(has_play_sond_driver);

MODULE_AUTHOR("@hichs.com.cn");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("play sound during start up");