[linux-2.6-block.git] / sound / ac97 / snd_ac97_compat.c

/*
 *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
 *
 * 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/list.h>
#include <linux/slab.h>
#include <sound/ac97/codec.h>
#include <sound/ac97/compat.h>
#include <sound/ac97/controller.h>
#include <sound/soc.h>

#include "ac97_core.h"

static void compat_ac97_release(struct device *dev)
{
	kfree(to_ac97_t(dev));
}

static void compat_ac97_reset(struct snd_ac97 *ac97)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	if (actrl->ops->reset)
		actrl->ops->reset(actrl);
}

static void compat_ac97_warm_reset(struct snd_ac97 *ac97)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	if (actrl->ops->warm_reset)
		actrl->ops->warm_reset(actrl);
}

static void compat_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
			      unsigned short val)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	actrl->ops->write(actrl, ac97->num, reg, val);
}

static unsigned short compat_ac97_read(struct snd_ac97 *ac97,
				       unsigned short reg)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;

	return actrl->ops->read(actrl, ac97->num, reg);
}

static struct snd_ac97_bus_ops compat_snd_ac97_bus_ops = {
	.reset = compat_ac97_reset,
	.warm_reset = compat_ac97_warm_reset,
	.write = compat_ac97_write,
	.read = compat_ac97_read,
};

static struct snd_ac97_bus compat_soc_ac97_bus = {
	.ops = &compat_snd_ac97_bus_ops,
};

struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev)
{
	struct snd_ac97 *ac97;
	int ret;

	ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
	if (ac97 == NULL)
		return ERR_PTR(-ENOMEM);

	ac97->private_data = adev;
	ac97->bus = &compat_soc_ac97_bus;

	ac97->dev.parent = &adev->dev;
	ac97->dev.release = compat_ac97_release;
	dev_set_name(&ac97->dev, "%s-compat", dev_name(&adev->dev));
	ret = device_register(&ac97->dev);
	if (ret) {
		put_device(&ac97->dev);
		return ERR_PTR(ret);
	}

	return ac97;
}
EXPORT_SYMBOL_GPL(snd_ac97_compat_alloc);

void snd_ac97_compat_release(struct snd_ac97 *ac97)
{
	device_unregister(&ac97->dev);
}
EXPORT_SYMBOL_GPL(snd_ac97_compat_release);

int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
	unsigned int id_mask)
{
	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	struct ac97_controller *actrl = adev->ac97_ctrl;
	unsigned int scanned;

	if (try_warm) {
		compat_ac97_warm_reset(ac97);
		scanned = snd_ac97_bus_scan_one(actrl, adev->num);
		if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
			return 1;
	}

	compat_ac97_reset(ac97);
	compat_ac97_warm_reset(ac97);
	scanned = snd_ac97_bus_scan_one(actrl, adev->num);
	if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
		return 0;

	return -ENODEV;
}
EXPORT_SYMBOL_GPL(snd_ac97_reset);
Commit	Line	Data
74426fbf RJ	1	/*
	2	* Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8
	9	#include <linux/list.h>
	10	#include <linux/slab.h>
	11	#include <sound/ac97/codec.h>
	12	#include <sound/ac97/compat.h>
	13	#include <sound/ac97/controller.h>
	14	#include <sound/soc.h>
	15
	16	#include "ac97_core.h"
	17
c7b81707 LY	18	static void compat_ac97_release(struct device *dev)
	19	{
	20	kfree(to_ac97_t(dev));
	21	}
	22
74426fbf RJ	23	static void compat_ac97_reset(struct snd_ac97 *ac97)
	24	{
	25	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	26	struct ac97_controller *actrl = adev->ac97_ctrl;
	27
	28	if (actrl->ops->reset)
	29	actrl->ops->reset(actrl);
	30	}
	31
	32	static void compat_ac97_warm_reset(struct snd_ac97 *ac97)
	33	{
	34	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	35	struct ac97_controller *actrl = adev->ac97_ctrl;
	36
	37	if (actrl->ops->warm_reset)
	38	actrl->ops->warm_reset(actrl);
	39	}
	40
	41	static void compat_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
	42	unsigned short val)
	43	{
	44	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	45	struct ac97_controller *actrl = adev->ac97_ctrl;
	46
	47	actrl->ops->write(actrl, ac97->num, reg, val);
	48	}
	49
	50	static unsigned short compat_ac97_read(struct snd_ac97 *ac97,
	51	unsigned short reg)
	52	{
	53	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	54	struct ac97_controller *actrl = adev->ac97_ctrl;
	55
	56	return actrl->ops->read(actrl, ac97->num, reg);
	57	}
	58
	59	static struct snd_ac97_bus_ops compat_snd_ac97_bus_ops = {
	60	.reset = compat_ac97_reset,
	61	.warm_reset = compat_ac97_warm_reset,
	62	.write = compat_ac97_write,
	63	.read = compat_ac97_read,
	64	};
	65
	66	static struct snd_ac97_bus compat_soc_ac97_bus = {
	67	.ops = &compat_snd_ac97_bus_ops,
	68	};
	69
	70	struct snd_ac97 snd_ac97_compat_alloc(struct ac97_codec_device adev)
	71	{
	72	struct snd_ac97 *ac97;
c7b81707	73	int ret;
74426fbf RJ	74
	75	ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
	76	if (ac97 == NULL)
	77	return ERR_PTR(-ENOMEM);
	78
74426fbf RJ	79	ac97->private_data = adev;
74426fbf RJ	80	ac97->bus = &compat_soc_ac97_bus;
c7b81707 LY	81
	82	ac97->dev.parent = &adev->dev;
	83	ac97->dev.release = compat_ac97_release;
	84	dev_set_name(&ac97->dev, "%s-compat", dev_name(&adev->dev));
	85	ret = device_register(&ac97->dev);
	86	if (ret) {
	87	put_device(&ac97->dev);
	88	return ERR_PTR(ret);
	89	}
	90
74426fbf RJ	91	return ac97;
	92	}
	93	EXPORT_SYMBOL_GPL(snd_ac97_compat_alloc);
	94
	95	void snd_ac97_compat_release(struct snd_ac97 *ac97)
	96	{
c7b81707	97	device_unregister(&ac97->dev);
74426fbf RJ	98	}
	99	EXPORT_SYMBOL_GPL(snd_ac97_compat_release);
	100
	101	int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
	102	unsigned int id_mask)
	103	{
	104	struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
	105	struct ac97_controller *actrl = adev->ac97_ctrl;
	106	unsigned int scanned;
	107
	108	if (try_warm) {
	109	compat_ac97_warm_reset(ac97);
	110	scanned = snd_ac97_bus_scan_one(actrl, adev->num);
	111	if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
	112	return 1;
	113	}
	114
	115	compat_ac97_reset(ac97);
	116	compat_ac97_warm_reset(ac97);
	117	scanned = snd_ac97_bus_scan_one(actrl, adev->num);
	118	if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
	119	return 0;
	120
	121	return -ENODEV;
	122	}
	123	EXPORT_SYMBOL_GPL(snd_ac97_reset);