Commit e10f8711 authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: wm2200: Initial DSP support 



Support download and execution of firmwares to the DSPs on the WM2200.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 09d5d588

sound/soc/codecs/wm2200.c

+238 −2
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/init.h>

#include <linux/delay.h>

#include <linux/pm.h>

#include <linux/firmware.h>

#include <linux/gcd.h>

#include <linux/gpio.h>

#include <linux/i2c.h>
@@ -32,6 +33,39 @@ 
#include <sound/wm2200.h>



#include "wm2200.h"

#include "wmfw.h"



#define WM2200_DSP_CONTROL_1                   0x00

#define WM2200_DSP_CONTROL_2                   0x02

#define WM2200_DSP_CONTROL_3                   0x03

#define WM2200_DSP_CONTROL_4                   0x04

#define WM2200_DSP_CONTROL_5                   0x06

#define WM2200_DSP_CONTROL_6                   0x07

#define WM2200_DSP_CONTROL_7                   0x08

#define WM2200_DSP_CONTROL_8                   0x09

#define WM2200_DSP_CONTROL_9                   0x0A

#define WM2200_DSP_CONTROL_10                  0x0B

#define WM2200_DSP_CONTROL_11                  0x0C

#define WM2200_DSP_CONTROL_12                  0x0D

#define WM2200_DSP_CONTROL_13                  0x0F

#define WM2200_DSP_CONTROL_14                  0x10

#define WM2200_DSP_CONTROL_15                  0x11

#define WM2200_DSP_CONTROL_16                  0x12

#define WM2200_DSP_CONTROL_17                  0x13

#define WM2200_DSP_CONTROL_18                  0x14

#define WM2200_DSP_CONTROL_19                  0x16

#define WM2200_DSP_CONTROL_20                  0x17

#define WM2200_DSP_CONTROL_21                  0x18

#define WM2200_DSP_CONTROL_22                  0x1A

#define WM2200_DSP_CONTROL_23                  0x1B

#define WM2200_DSP_CONTROL_24                  0x1C

#define WM2200_DSP_CONTROL_25                  0x1E

#define WM2200_DSP_CONTROL_26                  0x20

#define WM2200_DSP_CONTROL_27                  0x21

#define WM2200_DSP_CONTROL_28                  0x22

#define WM2200_DSP_CONTROL_29                  0x23

#define WM2200_DSP_CONTROL_30                  0x24

#define WM2200_DSP_CONTROL_31                  0x26



/* The code assumes DCVDD is generated internally */

#define WM2200_NUM_CORE_SUPPLIES 2
@@ -953,6 +987,206 @@ static int wm2200_reset(struct wm2200_priv *wm2200) 
	}

}



static int wm2200_dsp_load(struct snd_soc_codec *codec, int base)

{

	const struct firmware *firmware;

	struct regmap *regmap = codec->control_data;

	unsigned int pos = 0;

	const struct wmfw_header *header;

	const struct wmfw_adsp1_sizes *adsp1_sizes;

	const struct wmfw_footer *footer;

	const struct wmfw_region *region;

	const char *file, *region_name;

	char *text;

	unsigned int dm, pm, zm, reg;

	int regions = 0;

	int ret, offset, type;



	switch (base) {

	case WM2200_DSP1_CONTROL_1:

		file = "wm2200-dsp1.wmfw";

		dm = WM2200_DSP1_DM_BASE;

		pm = WM2200_DSP1_PM_BASE;

		zm = WM2200_DSP1_ZM_BASE;

		break;

	case WM2200_DSP2_CONTROL_1:

		file = "wm2200-dsp2.wmfw";

		dm = WM2200_DSP2_DM_BASE;

		pm = WM2200_DSP2_PM_BASE;

		zm = WM2200_DSP2_ZM_BASE;

		break;

	default:

		dev_err(codec->dev, "BASE %x\n", base);

		BUG_ON(1);

		return -EINVAL;

	}



	ret = request_firmware(&firmware, file, codec->dev);

	if (ret != 0) {

		dev_err(codec->dev, "Failed to request '%s'\n", file);

		return ret;

	}



	pos = sizeof(*header) + sizeof(*adsp1_sizes) + sizeof(*footer);

	if (pos >= firmware->size) {

		dev_err(codec->dev, "%s: file too short, %d bytes\n",

			file, firmware->size);

		return -EINVAL;

	}



	header = (void*)&firmware->data[0];



	if (memcmp(&header->magic[0], "WMFW", 4) != 0) {

		dev_err(codec->dev, "%s: invalid magic\n", file);

		return -EINVAL;

	}



	if (header->ver != 0) {

		dev_err(codec->dev, "%s: unknown file format %d\n",

			file, header->ver);

		return -EINVAL;

	}



	if (le32_to_cpu(header->len) != sizeof(*header) +

	    sizeof(*adsp1_sizes) + sizeof(*footer)) {

		dev_err(codec->dev, "%s: unexpected header length %d\n",

			file, le32_to_cpu(header->len));

		return -EINVAL;

	}



	if (header->core != WMFW_ADSP1) {

		dev_err(codec->dev, "%s: invalid core %d\n",

			file, header->core);

		return -EINVAL;

	}



	adsp1_sizes = (void *)&(header[1]);

	footer = (void *)&(adsp1_sizes[1]);



	dev_dbg(codec->dev, "%s: %d DM, %d PM, %d ZM\n",

		file, le32_to_cpu(adsp1_sizes->dm),

		le32_to_cpu(adsp1_sizes->pm), le32_to_cpu(adsp1_sizes->zm));



	dev_dbg(codec->dev, "%s: timestamp %llu\n", file,

		le64_to_cpu(footer->timestamp));



	while (pos < firmware->size &&

	       pos - firmware->size > sizeof(*region)) {

		region = (void *)&(firmware->data[pos]);

		region_name = "Unknown";

		reg = 0;

		text = NULL;

		offset = le32_to_cpu(region->offset) & 0xffffff;

		type = be32_to_cpu(region->type) & 0xff;

		

		switch (type) {

		case WMFW_NAME_TEXT:

			region_name = "Firmware name";

			text = kzalloc(le32_to_cpu(region->len) + 1,

				       GFP_KERNEL);

			break;

		case WMFW_INFO_TEXT:

			region_name = "Information";

			text = kzalloc(le32_to_cpu(region->len) + 1,

				       GFP_KERNEL);

			break;

		case WMFW_ABSOLUTE:

			region_name = "Absolute";

			reg = offset;

			break;

		case WMFW_ADSP1_PM:

			region_name = "PM";

			reg = pm + (offset * 3);

			break;

		case WMFW_ADSP1_DM:

			region_name = "DM";

			reg = dm + (offset * 2);

			break;

		case WMFW_ADSP1_ZM:

			region_name = "ZM";

			reg = zm + (offset * 2);

			break;

		default:

			dev_warn(codec->dev,

				 "%s.%d: Unknown region type %x at %d(%x)\n",

				 file, regions, type, pos, pos);

			break;

		}



		dev_dbg(codec->dev, "%s.%d: %d bytes at %d in %s\n", file,

			regions, le32_to_cpu(region->len), offset,

			region_name);



		if (text) {

			memcpy(text, region->data, le32_to_cpu(region->len));

			dev_info(codec->dev, "%s: %s\n", file, text);

			kfree(text);

		}



		if (reg) {

			ret = regmap_raw_write(regmap, reg, region->data,

					       le32_to_cpu(region->len));

			if (ret != 0) {

				dev_err(codec->dev,

					"%s.%d: Failed to write %d bytes at %d in %s: %d\n",

					file, regions,

					le32_to_cpu(region->len), offset,

					region_name, ret);

				goto out;

			}

		}



		pos += le32_to_cpu(region->len) + sizeof(*region);

		regions++;

	}



	if (pos > firmware->size)

		dev_warn(codec->dev, "%s.%d: %d bytes at end of file\n",

			 file, regions, pos - firmware->size);



out:

	release_firmware(firmware);

	

	return ret;

}



static int wm2200_dsp_ev(struct snd_soc_dapm_widget *w,

			 struct snd_kcontrol *kcontrol,

			 int event)

{

	struct snd_soc_codec *codec = w->codec;

	int base = w->reg - WM2200_DSP_CONTROL_30;

	int ret;



	switch (event) {

	case SND_SOC_DAPM_POST_PMU:

		ret = wm2200_dsp_load(codec, base);

		if (ret != 0)

			return ret;



		/* Start the core running */

		snd_soc_update_bits(codec, w->reg,

				    WM2200_DSP1_CORE_ENA | WM2200_DSP1_START,

				    WM2200_DSP1_CORE_ENA | WM2200_DSP1_START);

		break;



	case SND_SOC_DAPM_PRE_PMD:

		/* Halt the core */

		snd_soc_update_bits(codec, w->reg,

				    WM2200_DSP1_CORE_ENA | WM2200_DSP1_START,

				    0);



		snd_soc_update_bits(codec, base + WM2200_DSP_CONTROL_19,

				    WM2200_DSP1_WDMA_BUFFER_LENGTH_MASK, 0);

		break;



	default:

		break;

	}



	return 0;

}



static DECLARE_TLV_DB_SCALE(in_tlv, -6300, 100, 0);

static DECLARE_TLV_DB_SCALE(digital_tlv, -6400, 50, 0);

static DECLARE_TLV_DB_SCALE(out_tlv, -6400, 100, 0);
@@ -1301,9 +1535,11 @@ SND_SOC_DAPM_PGA("LHPF2", WM2200_HPLPF2_1, WM2200_LHPF2_ENA_SHIFT, 0, 
		 NULL, 0),



SND_SOC_DAPM_PGA_E("DSP1", WM2200_DSP1_CONTROL_30, WM2200_DSP1_SYS_ENA_SHIFT,

		   0, NULL, 0, NULL, 0),

		   0, NULL, 0, wm2200_dsp_ev,

		   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),

SND_SOC_DAPM_PGA_E("DSP2", WM2200_DSP2_CONTROL_30, WM2200_DSP2_SYS_ENA_SHIFT,

		   0, NULL, 0, NULL, 0),

		   0, NULL, 0, wm2200_dsp_ev,

		   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),



SND_SOC_DAPM_AIF_OUT("AIF1TX1", "Capture", 0,

		    WM2200_AUDIO_IF_1_22, WM2200_AIF1TX1_ENA_SHIFT, 0),

sound/soc/codecs/wmfw.h

0 → 100644
+56 −0
Original line number Diff line number Diff line 
/*

 * wmfw.h - Wolfson firmware format information

 *

 * Copyright 2012 Wolfson Microelectronics plc

 *

 * Author: Mark Brown <broonie@opensource.wolfsonmicro.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.

 */



#ifndef __WMFW_H

#define __WMFW_H



#include <linux/types.h>



struct wmfw_header {

	char magic[4];

	__le32 len;

	__le16 rev;

	u8 core;

	u8 ver;

} __packed;



struct wmfw_footer {

	__le64 timestamp;

	__le32 checksum;

} __packed;



struct wmfw_adsp1_sizes {

	__le32 dm;

	__le32 pm;

	__le32 zm;

} __packed;



struct wmfw_region {

	union {

		__be32 type;

		__le32 offset;

	};

	__le32 len;

	u8 data[];

} __packed;



#define WMFW_ADSP1 1



#define WMFW_ABSOLUTE  0xf0

#define WMFW_NAME_TEXT 0xfe

#define WMFW_INFO_TEXT 0xff



#define WMFW_ADSP1_PM 2

#define WMFW_ADSP1_DM 3

#define WMFW_ADSP1_ZM 4



#endif