[mirror_ubuntu-focal-kernel.git] / drivers / video / backlight / sky81452-backlight.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * sky81452-backlight.c	SKY81452 backlight driver
 *
 * Copyright 2014 Skyworks Solutions Inc.
 * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
 */

#include <linux/backlight.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/platform_data/sky81452-backlight.h>
#include <linux/slab.h>

/* registers */
#define SKY81452_REG0	0x00
#define SKY81452_REG1	0x01
#define SKY81452_REG2	0x02
#define SKY81452_REG4	0x04
#define SKY81452_REG5	0x05

/* bit mask */
#define SKY81452_CS	0xFF
#define SKY81452_EN	0x3F
#define SKY81452_IGPW	0x20
#define SKY81452_PWMMD	0x10
#define SKY81452_PHASE	0x08
#define SKY81452_ILIM	0x04
#define SKY81452_VSHRT	0x03
#define SKY81452_OCP	0x80
#define SKY81452_OTMP	0x40
#define SKY81452_SHRT	0x3F
#define SKY81452_OPN	0x3F

#define SKY81452_DEFAULT_NAME "lcd-backlight"
#define SKY81452_MAX_BRIGHTNESS	(SKY81452_CS + 1)

#define CTZ(b) __builtin_ctz(b)

static int sky81452_bl_update_status(struct backlight_device *bd)
{
	const struct sky81452_bl_platform_data *pdata =
			dev_get_platdata(bd->dev.parent);
	const unsigned int brightness = (unsigned int)bd->props.brightness;
	struct regmap *regmap = bl_get_data(bd);
	int ret;

	if (brightness > 0) {
		ret = regmap_write(regmap, SKY81452_REG0, brightness - 1);
		if (ret < 0)
			return ret;

		return regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN,
					pdata->enable << CTZ(SKY81452_EN));
	}

	return regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN, 0);
}

static const struct backlight_ops sky81452_bl_ops = {
	.update_status = sky81452_bl_update_status,
};

static ssize_t sky81452_bl_store_enable(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct regmap *regmap = bl_get_data(to_backlight_device(dev));
	unsigned long value;
	int ret;

	ret = kstrtoul(buf, 16, &value);
	if (ret < 0)
		return ret;

	ret = regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN,
					value << CTZ(SKY81452_EN));
	if (ret < 0)
		return ret;

	return count;
}

static ssize_t sky81452_bl_show_open_short(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct regmap *regmap = bl_get_data(to_backlight_device(dev));
	unsigned int reg, value = 0;
	char tmp[3];
	int i, ret;

	reg = !strcmp(attr->attr.name, "open") ? SKY81452_REG5 : SKY81452_REG4;
	ret = regmap_read(regmap, reg, &value);
	if (ret < 0)
		return ret;

	if (value & SKY81452_SHRT) {
		*buf = 0;
		for (i = 0; i < 6; i++) {
			if (value & 0x01) {
				sprintf(tmp, "%d ", i + 1);
				strcat(buf, tmp);
			}
			value >>= 1;
		}
		strcat(buf, "\n");
	} else {
		strcpy(buf, "none\n");
	}

	return strlen(buf);
}

static ssize_t sky81452_bl_show_fault(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct regmap *regmap = bl_get_data(to_backlight_device(dev));
	unsigned int value = 0;
	int ret;

	ret = regmap_read(regmap, SKY81452_REG4, &value);
	if (ret < 0)
		return ret;

	*buf = 0;

	if (value & SKY81452_OCP)
		strcat(buf, "over-current ");

	if (value & SKY81452_OTMP)
		strcat(buf, "over-temperature");

	strcat(buf, "\n");
	return strlen(buf);
}

static DEVICE_ATTR(enable, S_IWGRP | S_IWUSR, NULL, sky81452_bl_store_enable);
static DEVICE_ATTR(open, S_IRUGO, sky81452_bl_show_open_short, NULL);
static DEVICE_ATTR(short, S_IRUGO, sky81452_bl_show_open_short, NULL);
static DEVICE_ATTR(fault, S_IRUGO, sky81452_bl_show_fault, NULL);

static struct attribute *sky81452_bl_attribute[] = {
	&dev_attr_enable.attr,
	&dev_attr_open.attr,
	&dev_attr_short.attr,
	&dev_attr_fault.attr,
	NULL
};

static const struct attribute_group sky81452_bl_attr_group = {
	.attrs = sky81452_bl_attribute,
};

#ifdef CONFIG_OF
static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
							struct device *dev)
{
	struct device_node *np = of_node_get(dev->of_node);
	struct sky81452_bl_platform_data *pdata;
	int num_entry;
	unsigned int sources[6];
	int ret;

	if (!np) {
		dev_err(dev, "backlight node not found.\n");
		return ERR_PTR(-ENODATA);
	}

	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata) {
		of_node_put(np);
		return ERR_PTR(-ENOMEM);
	}

	of_property_read_string(np, "name", &pdata->name);
	pdata->ignore_pwm = of_property_read_bool(np, "skyworks,ignore-pwm");
	pdata->dpwm_mode = of_property_read_bool(np, "skyworks,dpwm-mode");
	pdata->phase_shift = of_property_read_bool(np, "skyworks,phase-shift");
	pdata->gpio_enable = of_get_gpio(np, 0);

	ret = of_property_count_u32_elems(np, "led-sources");
	if (ret < 0) {
		pdata->enable = SKY81452_EN >> CTZ(SKY81452_EN);
	} else {
		num_entry = ret;
		if (num_entry > 6)
			num_entry = 6;

		ret = of_property_read_u32_array(np, "led-sources", sources,
					num_entry);
		if (ret < 0) {
			dev_err(dev, "led-sources node is invalid.\n");
			return ERR_PTR(-EINVAL);
		}

		pdata->enable = 0;
		while (--num_entry)
			pdata->enable |= (1 << sources[num_entry]);
	}

	ret = of_property_read_u32(np,
			"skyworks,short-detection-threshold-volt",
			&pdata->short_detection_threshold);
	if (ret < 0)
		pdata->short_detection_threshold = 7;

	ret = of_property_read_u32(np, "skyworks,current-limit-mA",
			&pdata->boost_current_limit);
	if (ret < 0)
		pdata->boost_current_limit = 2750;

	of_node_put(np);
	return pdata;
}
#else
static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
							struct device *dev)
{
	return ERR_PTR(-EINVAL);
}
#endif

static int sky81452_bl_init_device(struct regmap *regmap,
		struct sky81452_bl_platform_data *pdata)
{
	unsigned int value;

	value = pdata->ignore_pwm ? SKY81452_IGPW : 0;
	value |= pdata->dpwm_mode ? SKY81452_PWMMD : 0;
	value |= pdata->phase_shift ? 0 : SKY81452_PHASE;

	if (pdata->boost_current_limit == 2300)
		value |= SKY81452_ILIM;
	else if (pdata->boost_current_limit != 2750)
		return -EINVAL;

	if (pdata->short_detection_threshold < 4 ||
				pdata->short_detection_threshold > 7)
		return -EINVAL;
	value |= (7 - pdata->short_detection_threshold) << CTZ(SKY81452_VSHRT);

	return regmap_write(regmap, SKY81452_REG2, value);
}

static int sky81452_bl_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct regmap *regmap = dev_get_drvdata(dev->parent);
	struct sky81452_bl_platform_data *pdata = dev_get_platdata(dev);
	struct backlight_device *bd;
	struct backlight_properties props;
	const char *name;
	int ret;

	if (!pdata) {
		pdata = sky81452_bl_parse_dt(dev);
		if (IS_ERR(pdata))
			return PTR_ERR(pdata);
	}

	if (gpio_is_valid(pdata->gpio_enable)) {
		ret = devm_gpio_request_one(dev, pdata->gpio_enable,
					GPIOF_OUT_INIT_HIGH, "sky81452-en");
		if (ret < 0) {
			dev_err(dev, "failed to request GPIO. err=%d\n", ret);
			return ret;
		}
	}

	ret = sky81452_bl_init_device(regmap, pdata);
	if (ret < 0) {
		dev_err(dev, "failed to initialize. err=%d\n", ret);
		return ret;
	}

	memset(&props, 0, sizeof(props));
	props.max_brightness = SKY81452_MAX_BRIGHTNESS,
	name = pdata->name ? pdata->name : SKY81452_DEFAULT_NAME;
	bd = devm_backlight_device_register(dev, name, dev, regmap,
						&sky81452_bl_ops, &props);
	if (IS_ERR(bd)) {
		dev_err(dev, "failed to register. err=%ld\n", PTR_ERR(bd));
		return PTR_ERR(bd);
	}

	platform_set_drvdata(pdev, bd);

	ret = sysfs_create_group(&bd->dev.kobj, &sky81452_bl_attr_group);
	if (ret < 0) {
		dev_err(dev, "failed to create attribute. err=%d\n", ret);
		return ret;
	}

	return ret;
}

static int sky81452_bl_remove(struct platform_device *pdev)
{
	const struct sky81452_bl_platform_data *pdata =
						dev_get_platdata(&pdev->dev);
	struct backlight_device *bd = platform_get_drvdata(pdev);

	sysfs_remove_group(&bd->dev.kobj, &sky81452_bl_attr_group);

	bd->props.power = FB_BLANK_UNBLANK;
	bd->props.brightness = 0;
	backlight_update_status(bd);

	if (gpio_is_valid(pdata->gpio_enable))
		gpio_set_value_cansleep(pdata->gpio_enable, 0);

	return 0;
}

#ifdef CONFIG_OF
static const struct of_device_id sky81452_bl_of_match[] = {
	{ .compatible = "skyworks,sky81452-backlight", },
	{ }
};
MODULE_DEVICE_TABLE(of, sky81452_bl_of_match);
#endif

static struct platform_driver sky81452_bl_driver = {
	.driver = {
		.name = "sky81452-backlight",
		.of_match_table = of_match_ptr(sky81452_bl_of_match),
	},
	.probe = sky81452_bl_probe,
	.remove = sky81452_bl_remove,
};

module_platform_driver(sky81452_bl_driver);

MODULE_DESCRIPTION("Skyworks SKY81452 backlight driver");
MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
caab277b	1	// SPDX-License-Identifier: GPL-2.0-only
f705806c GY	2	/*
	3	* sky81452-backlight.c SKY81452 backlight driver
	4	*
	5	* Copyright 2014 Skyworks Solutions Inc.
	6	* Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
f705806c GY	7	*/
	8
	9	#include <linux/backlight.h>
	10	#include <linux/err.h>
	11	#include <linux/gpio.h>
	12	#include <linux/init.h>
	13	#include <linux/kernel.h>
	14	#include <linux/module.h>
	15	#include <linux/of.h>
	16	#include <linux/of_gpio.h>
	17	#include <linux/platform_device.h>
	18	#include <linux/regmap.h>
	19	#include <linux/platform_data/sky81452-backlight.h>
	20	#include <linux/slab.h>
	21
	22	/* registers */
	23	#define SKY81452_REG0 0x00
	24	#define SKY81452_REG1 0x01
	25	#define SKY81452_REG2 0x02
	26	#define SKY81452_REG4 0x04
	27	#define SKY81452_REG5 0x05
	28
	29	/* bit mask */
	30	#define SKY81452_CS 0xFF
	31	#define SKY81452_EN 0x3F
	32	#define SKY81452_IGPW 0x20
	33	#define SKY81452_PWMMD 0x10
	34	#define SKY81452_PHASE 0x08
	35	#define SKY81452_ILIM 0x04
	36	#define SKY81452_VSHRT 0x03
	37	#define SKY81452_OCP 0x80
	38	#define SKY81452_OTMP 0x40
	39	#define SKY81452_SHRT 0x3F
	40	#define SKY81452_OPN 0x3F
	41
	42	#define SKY81452_DEFAULT_NAME "lcd-backlight"
	43	#define SKY81452_MAX_BRIGHTNESS (SKY81452_CS + 1)
	44
	45	#define CTZ(b) __builtin_ctz(b)
	46
	47	static int sky81452_bl_update_status(struct backlight_device *bd)
	48	{
	49	const struct sky81452_bl_platform_data *pdata =
	50	dev_get_platdata(bd->dev.parent);
	51	const unsigned int brightness = (unsigned int)bd->props.brightness;
	52	struct regmap *regmap = bl_get_data(bd);
	53	int ret;
	54
	55	if (brightness > 0) {
	56	ret = regmap_write(regmap, SKY81452_REG0, brightness - 1);
047ffbb2	57	if (ret < 0)
f705806c GY	58	return ret;
	59
	60	return regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN,
	61	pdata->enable << CTZ(SKY81452_EN));
	62	}
	63
	64	return regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN, 0);
	65	}
	66
	67	static const struct backlight_ops sky81452_bl_ops = {
	68	.update_status = sky81452_bl_update_status,
	69	};
	70
	71	static ssize_t sky81452_bl_store_enable(struct device *dev,
	72	struct device_attribute attr, const char buf, size_t count)
	73	{
	74	struct regmap *regmap = bl_get_data(to_backlight_device(dev));
	75	unsigned long value;
	76	int ret;
	77
	78	ret = kstrtoul(buf, 16, &value);
047ffbb2	79	if (ret < 0)
f705806c GY	80	return ret;
	81
	82	ret = regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN,
	83	value << CTZ(SKY81452_EN));
047ffbb2	84	if (ret < 0)
f705806c GY	85	return ret;
	86
	87	return count;
	88	}
	89
	90	static ssize_t sky81452_bl_show_open_short(struct device *dev,
	91	struct device_attribute attr, char buf)
	92	{
	93	struct regmap *regmap = bl_get_data(to_backlight_device(dev));
	94	unsigned int reg, value = 0;
	95	char tmp[3];
	96	int i, ret;
	97
	98	reg = !strcmp(attr->attr.name, "open") ? SKY81452_REG5 : SKY81452_REG4;
	99	ret = regmap_read(regmap, reg, &value);
047ffbb2	100	if (ret < 0)
f705806c GY	101	return ret;
	102
	103	if (value & SKY81452_SHRT) {
	104	*buf = 0;
	105	for (i = 0; i < 6; i++) {
	106	if (value & 0x01) {
	107	sprintf(tmp, "%d ", i + 1);
	108	strcat(buf, tmp);
	109	}
	110	value >>= 1;
	111	}
	112	strcat(buf, "\n");
	113	} else {
	114	strcpy(buf, "none\n");
	115	}
	116
	117	return strlen(buf);
	118	}
	119
	120	static ssize_t sky81452_bl_show_fault(struct device *dev,
	121	struct device_attribute attr, char buf)
	122	{
	123	struct regmap *regmap = bl_get_data(to_backlight_device(dev));
	124	unsigned int value = 0;
	125	int ret;
	126
	127	ret = regmap_read(regmap, SKY81452_REG4, &value);
047ffbb2	128	if (ret < 0)
f705806c GY	129	return ret;
	130
	131	*buf = 0;
	132
	133	if (value & SKY81452_OCP)
	134	strcat(buf, "over-current ");
	135
	136	if (value & SKY81452_OTMP)
	137	strcat(buf, "over-temperature");
	138
	139	strcat(buf, "\n");
	140	return strlen(buf);
	141	}
	142
	143	static DEVICE_ATTR(enable, S_IWGRP \| S_IWUSR, NULL, sky81452_bl_store_enable);
	144	static DEVICE_ATTR(open, S_IRUGO, sky81452_bl_show_open_short, NULL);
	145	static DEVICE_ATTR(short, S_IRUGO, sky81452_bl_show_open_short, NULL);
	146	static DEVICE_ATTR(fault, S_IRUGO, sky81452_bl_show_fault, NULL);
	147
	148	static struct attribute *sky81452_bl_attribute[] = {
	149	&dev_attr_enable.attr,
	150	&dev_attr_open.attr,
	151	&dev_attr_short.attr,
	152	&dev_attr_fault.attr,
	153	NULL
	154	};
	155
	156	static const struct attribute_group sky81452_bl_attr_group = {
	157	.attrs = sky81452_bl_attribute,
	158	};
	159
	160	#ifdef CONFIG_OF
	161	static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
	162	struct device *dev)
	163	{
	164	struct device_node *np = of_node_get(dev->of_node);
	165	struct sky81452_bl_platform_data *pdata;
	166	int num_entry;
	167	unsigned int sources[6];
	168	int ret;
	169
	170	if (!np) {
	171	dev_err(dev, "backlight node not found.\n");
	172	return ERR_PTR(-ENODATA);
	173	}
	174
	175	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
	176	if (!pdata) {
	177	of_node_put(np);
	178	return ERR_PTR(-ENOMEM);
	179	}
	180
	181	of_property_read_string(np, "name", &pdata->name);
	182	pdata->ignore_pwm = of_property_read_bool(np, "skyworks,ignore-pwm");
	183	pdata->dpwm_mode = of_property_read_bool(np, "skyworks,dpwm-mode");
	184	pdata->phase_shift = of_property_read_bool(np, "skyworks,phase-shift");
	185	pdata->gpio_enable = of_get_gpio(np, 0);
	186
	187	ret = of_property_count_u32_elems(np, "led-sources");
047ffbb2	188	if (ret < 0) {
f705806c GY	189	pdata->enable = SKY81452_EN >> CTZ(SKY81452_EN);
	190	} else {
	191	num_entry = ret;
	192	if (num_entry > 6)
	193	num_entry = 6;
	194
	195	ret = of_property_read_u32_array(np, "led-sources", sources,
	196	num_entry);
047ffbb2	197	if (ret < 0) {
f705806c GY	198	dev_err(dev, "led-sources node is invalid.\n");
	199	return ERR_PTR(-EINVAL);
	200	}
	201
	202	pdata->enable = 0;
	203	while (--num_entry)
	204	pdata->enable \|= (1 << sources[num_entry]);
	205	}
	206
	207	ret = of_property_read_u32(np,
	208	"skyworks,short-detection-threshold-volt",
	209	&pdata->short_detection_threshold);
047ffbb2	210	if (ret < 0)
f705806c GY	211	pdata->short_detection_threshold = 7;
	212
	213	ret = of_property_read_u32(np, "skyworks,current-limit-mA",
	214	&pdata->boost_current_limit);
047ffbb2	215	if (ret < 0)
f705806c GY	216	pdata->boost_current_limit = 2750;
	217
	218	of_node_put(np);
	219	return pdata;
	220	}
	221	#else
	222	static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
	223	struct device *dev)
	224	{
	225	return ERR_PTR(-EINVAL);
	226	}
	227	#endif
	228
	229	static int sky81452_bl_init_device(struct regmap *regmap,
	230	struct sky81452_bl_platform_data *pdata)
	231	{
	232	unsigned int value;
	233
	234	value = pdata->ignore_pwm ? SKY81452_IGPW : 0;
	235	value \|= pdata->dpwm_mode ? SKY81452_PWMMD : 0;
	236	value \|= pdata->phase_shift ? 0 : SKY81452_PHASE;
	237
	238	if (pdata->boost_current_limit == 2300)
	239	value \|= SKY81452_ILIM;
	240	else if (pdata->boost_current_limit != 2750)
	241	return -EINVAL;
	242
	243	if (pdata->short_detection_threshold < 4 \|\|
	244	pdata->short_detection_threshold > 7)
	245	return -EINVAL;
	246	value \|= (7 - pdata->short_detection_threshold) << CTZ(SKY81452_VSHRT);
	247
	248	return regmap_write(regmap, SKY81452_REG2, value);
	249	}
	250
	251	static int sky81452_bl_probe(struct platform_device *pdev)
	252	{
	253	struct device *dev = &pdev->dev;
	254	struct regmap *regmap = dev_get_drvdata(dev->parent);
	255	struct sky81452_bl_platform_data *pdata = dev_get_platdata(dev);
	256	struct backlight_device *bd;
	257	struct backlight_properties props;
	258	const char *name;
	259	int ret;
	260
	261	if (!pdata) {
	262	pdata = sky81452_bl_parse_dt(dev);
	263	if (IS_ERR(pdata))
	264	return PTR_ERR(pdata);
	265	}
	266
	267	if (gpio_is_valid(pdata->gpio_enable)) {
	268	ret = devm_gpio_request_one(dev, pdata->gpio_enable,
	269	GPIOF_OUT_INIT_HIGH, "sky81452-en");
047ffbb2	270	if (ret < 0) {
f705806c GY	271	dev_err(dev, "failed to request GPIO. err=%d\n", ret);
	272	return ret;
	273	}
	274	}
	275
	276	ret = sky81452_bl_init_device(regmap, pdata);
047ffbb2	277	if (ret < 0) {
f705806c GY	278	dev_err(dev, "failed to initialize. err=%d\n", ret);
	279	return ret;
	280	}
	281
	282	memset(&props, 0, sizeof(props));
	283	props.max_brightness = SKY81452_MAX_BRIGHTNESS,
	284	name = pdata->name ? pdata->name : SKY81452_DEFAULT_NAME;
	285	bd = devm_backlight_device_register(dev, name, dev, regmap,
	286	&sky81452_bl_ops, &props);
	287	if (IS_ERR(bd)) {
	288	dev_err(dev, "failed to register. err=%ld\n", PTR_ERR(bd));
	289	return PTR_ERR(bd);
	290	}
	291
	292	platform_set_drvdata(pdev, bd);
	293
047ffbb2 AL	294	ret = sysfs_create_group(&bd->dev.kobj, &sky81452_bl_attr_group);
047ffbb2 AL	295	if (ret < 0) {
f705806c GY	296	dev_err(dev, "failed to create attribute. err=%d\n", ret);
	297	return ret;
	298	}
	299
	300	return ret;
	301	}
	302
	303	static int sky81452_bl_remove(struct platform_device *pdev)
	304	{
	305	const struct sky81452_bl_platform_data *pdata =
	306	dev_get_platdata(&pdev->dev);
	307	struct backlight_device *bd = platform_get_drvdata(pdev);
	308
	309	sysfs_remove_group(&bd->dev.kobj, &sky81452_bl_attr_group);
	310
	311	bd->props.power = FB_BLANK_UNBLANK;
	312	bd->props.brightness = 0;
	313	backlight_update_status(bd);
	314
	315	if (gpio_is_valid(pdata->gpio_enable))
	316	gpio_set_value_cansleep(pdata->gpio_enable, 0);
	317
	318	return 0;
	319	}
	320
	321	#ifdef CONFIG_OF
	322	static const struct of_device_id sky81452_bl_of_match[] = {
	323	{ .compatible = "skyworks,sky81452-backlight", },
	324	{ }
	325	};
	326	MODULE_DEVICE_TABLE(of, sky81452_bl_of_match);
	327	#endif
	328
	329	static struct platform_driver sky81452_bl_driver = {
	330	.driver = {
	331	.name = "sky81452-backlight",
	332	.of_match_table = of_match_ptr(sky81452_bl_of_match),
	333	},
	334	.probe = sky81452_bl_probe,
	335	.remove = sky81452_bl_remove,
	336	};
	337
	338	module_platform_driver(sky81452_bl_driver);
	339
	340	MODULE_DESCRIPTION("Skyworks SKY81452 backlight driver");
	341	MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
	342	MODULE_LICENSE("GPL v2");