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Release 4.11 drivers/mfd/lm3533-core.c

Directory: drivers/mfd
/*
 * lm3533-core.c -- LM3533 Core
 *
 * Copyright (C) 2011-2012 Texas Instruments
 *
 * Author: Johan Hovold <jhovold@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under  the terms of the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the License, or (at your
 * option) any later version.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/regmap.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/uaccess.h>

#include <linux/mfd/lm3533.h>



#define LM3533_BOOST_OVP_MASK		0x06

#define LM3533_BOOST_OVP_SHIFT		1


#define LM3533_BOOST_FREQ_MASK		0x01

#define LM3533_BOOST_FREQ_SHIFT		0


#define LM3533_BL_ID_MASK		1

#define LM3533_LED_ID_MASK		3

#define LM3533_BL_ID_MAX		1

#define LM3533_LED_ID_MAX		3


#define LM3533_HVLED_ID_MAX		2

#define LM3533_LVLED_ID_MAX		5


#define LM3533_REG_OUTPUT_CONF1		0x10

#define LM3533_REG_OUTPUT_CONF2		0x11

#define LM3533_REG_BOOST_PWM		0x2c


#define LM3533_REG_MAX			0xb2



static struct mfd_cell lm3533_als_devs[] = {
	{
		.name	= "lm3533-als",
		.id	= -1,
        },
};


static struct mfd_cell lm3533_bl_devs[] = {
	{
		.name	= "lm3533-backlight",
		.id	= 0,
        },
	{
		.name	= "lm3533-backlight",
		.id	= 1,
        },
};


static struct mfd_cell lm3533_led_devs[] = {
	{
		.name	= "lm3533-leds",
		.id	= 0,
        },
	{
		.name	= "lm3533-leds",
		.id	= 1,
        },
	{
		.name	= "lm3533-leds",
		.id	= 2,
        },
	{
		.name	= "lm3533-leds",
		.id	= 3,
        },
};


int lm3533_read(struct lm3533 *lm3533, u8 reg, u8 *val) { int tmp; int ret; ret = regmap_read(lm3533->regmap, reg, &tmp); if (ret < 0) { dev_err(lm3533->dev, "failed to read register %02x: %d\n", reg, ret); return ret; } *val = tmp; dev_dbg(lm3533->dev, "read [%02x]: %02x\n", reg, *val); return ret; }

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Johan Hovold83100.00%1100.00%
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EXPORT_SYMBOL_GPL(lm3533_read);
int lm3533_write(struct lm3533 *lm3533, u8 reg, u8 val) { int ret; dev_dbg(lm3533->dev, "write [%02x]: %02x\n", reg, val); ret = regmap_write(lm3533->regmap, reg, val); if (ret < 0) { dev_err(lm3533->dev, "failed to write register %02x: %d\n", reg, ret); } return ret; }

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Johan Hovold69100.00%1100.00%
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EXPORT_SYMBOL_GPL(lm3533_write);
int lm3533_update(struct lm3533 *lm3533, u8 reg, u8 val, u8 mask) { int ret; dev_dbg(lm3533->dev, "update [%02x]: %02x/%02x\n", reg, val, mask); ret = regmap_update_bits(lm3533->regmap, reg, mask, val); if (ret < 0) { dev_err(lm3533->dev, "failed to update register %02x: %d\n", reg, ret); } return ret; }

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Johan Hovold7497.37%150.00%
Axel Lin22.63%150.00%
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EXPORT_SYMBOL_GPL(lm3533_update);
static int lm3533_set_boost_freq(struct lm3533 *lm3533, enum lm3533_boost_freq freq) { int ret; ret = lm3533_update(lm3533, LM3533_REG_BOOST_PWM, freq << LM3533_BOOST_FREQ_SHIFT, LM3533_BOOST_FREQ_MASK); if (ret) dev_err(lm3533->dev, "failed to set boost frequency\n"); return ret; }

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Johan Hovold49100.00%1100.00%
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static int lm3533_set_boost_ovp(struct lm3533 *lm3533, enum lm3533_boost_ovp ovp) { int ret; ret = lm3533_update(lm3533, LM3533_REG_BOOST_PWM, ovp << LM3533_BOOST_OVP_SHIFT, LM3533_BOOST_OVP_MASK); if (ret) dev_err(lm3533->dev, "failed to set boost ovp\n"); return ret; }

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Johan Hovold49100.00%1100.00%
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/* * HVLED output config -- output hvled controlled by backlight bl */
static int lm3533_set_hvled_config(struct lm3533 *lm3533, u8 hvled, u8 bl) { u8 val; u8 mask; int shift; int ret; if (hvled == 0 || hvled > LM3533_HVLED_ID_MAX) return -EINVAL; if (bl > LM3533_BL_ID_MAX) return -EINVAL; shift = hvled - 1; mask = LM3533_BL_ID_MASK << shift; val = bl << shift; ret = lm3533_update(lm3533, LM3533_REG_OUTPUT_CONF1, val, mask); if (ret) dev_err(lm3533->dev, "failed to set hvled config\n"); return ret; }

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/* * LVLED output config -- output lvled controlled by LED led */
static int lm3533_set_lvled_config(struct lm3533 *lm3533, u8 lvled, u8 led) { u8 reg; u8 val; u8 mask; int shift; int ret; if (lvled == 0 || lvled > LM3533_LVLED_ID_MAX) return -EINVAL; if (led > LM3533_LED_ID_MAX) return -EINVAL; if (lvled < 4) { reg = LM3533_REG_OUTPUT_CONF1; shift = 2 * lvled; } else { reg = LM3533_REG_OUTPUT_CONF2; shift = 2 * (lvled - 4); } mask = LM3533_LED_ID_MASK << shift; val = led << shift; ret = lm3533_update(lm3533, reg, val, mask); if (ret) dev_err(lm3533->dev, "failed to set lvled config\n"); return ret; }

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Johan Hovold132100.00%1100.00%
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static void lm3533_enable(struct lm3533 *lm3533) { if (gpio_is_valid(lm3533->gpio_hwen)) gpio_set_value(lm3533->gpio_hwen, 1); }

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Johan Hovold29100.00%1100.00%
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static void lm3533_disable(struct lm3533 *lm3533) { if (gpio_is_valid(lm3533->gpio_hwen)) gpio_set_value(lm3533->gpio_hwen, 0); }

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Johan Hovold29100.00%1100.00%
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enum lm3533_attribute_type { LM3533_ATTR_TYPE_BACKLIGHT, LM3533_ATTR_TYPE_LED, }; struct lm3533_device_attribute { struct device_attribute dev_attr; enum lm3533_attribute_type type; union { struct { u8 id; } output; } u; }; #define to_lm3533_dev_attr(_attr) \ container_of(_attr, struct lm3533_device_attribute, dev_attr)
static ssize_t show_output(struct device *dev, struct device_attribute *attr, char *buf) { struct lm3533 *lm3533 = dev_get_drvdata(dev); struct lm3533_device_attribute *lattr = to_lm3533_dev_attr(attr); int id = lattr->u.output.id; u8 reg; u8 val; u8 mask; int shift; int ret; if (lattr->type == LM3533_ATTR_TYPE_BACKLIGHT) { reg = LM3533_REG_OUTPUT_CONF1; shift = id - 1; mask = LM3533_BL_ID_MASK << shift; } else { if (id < 4) { reg = LM3533_REG_OUTPUT_CONF1; shift = 2 * id; } else { reg = LM3533_REG_OUTPUT_CONF2; shift = 2 * (id - 4); } mask = LM3533_LED_ID_MASK << shift; } ret = lm3533_read(lm3533, reg, &val); if (ret) return ret; val = (val & mask) >> shift; return scnprintf(buf, PAGE_SIZE, "%u\n", val); }

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Johan Hovold177100.00%1100.00%
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static ssize_t store_output(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct lm3533 *lm3533 = dev_get_drvdata(dev); struct lm3533_device_attribute *lattr = to_lm3533_dev_attr(attr); int id = lattr->u.output.id; u8 val; int ret; if (kstrtou8(buf, 0, &val)) return -EINVAL; if (lattr->type == LM3533_ATTR_TYPE_BACKLIGHT) ret = lm3533_set_hvled_config(lm3533, id, val); else ret = lm3533_set_lvled_config(lm3533, id, val); if (ret) return ret; return len; }

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Johan Hovold118100.00%1100.00%
Total118100.00%1100.00%

#define LM3533_OUTPUT_ATTR(_name, _mode, _show, _store, _type, _id) \ struct lm3533_device_attribute lm3533_dev_attr_##_name = \ { .dev_attr = __ATTR(_name, _mode, _show, _store), \ .type = _type, \ .u.output = { .id = _id }, } #define LM3533_OUTPUT_ATTR_RW(_name, _type, _id) \ LM3533_OUTPUT_ATTR(output_##_name, S_IRUGO | S_IWUSR, \ show_output, store_output, _type, _id) #define LM3533_OUTPUT_HVLED_ATTR_RW(_nr) \ LM3533_OUTPUT_ATTR_RW(hvled##_nr, LM3533_ATTR_TYPE_BACKLIGHT, _nr) #define LM3533_OUTPUT_LVLED_ATTR_RW(_nr) \ LM3533_OUTPUT_ATTR_RW(lvled##_nr, LM3533_ATTR_TYPE_LED, _nr) /* * Output config: * * output_hvled<nr> 0-1 * output_lvled<nr> 0-3 */ static LM3533_OUTPUT_HVLED_ATTR_RW(1); static LM3533_OUTPUT_HVLED_ATTR_RW(2); static LM3533_OUTPUT_LVLED_ATTR_RW(1); static LM3533_OUTPUT_LVLED_ATTR_RW(2); static LM3533_OUTPUT_LVLED_ATTR_RW(3); static LM3533_OUTPUT_LVLED_ATTR_RW(4); static LM3533_OUTPUT_LVLED_ATTR_RW(5); static struct attribute *lm3533_attributes[] = { &lm3533_dev_attr_output_hvled1.dev_attr.attr, &lm3533_dev_attr_output_hvled2.dev_attr.attr, &lm3533_dev_attr_output_lvled1.dev_attr.attr, &lm3533_dev_attr_output_lvled2.dev_attr.attr, &lm3533_dev_attr_output_lvled3.dev_attr.attr, &lm3533_dev_attr_output_lvled4.dev_attr.attr, &lm3533_dev_attr_output_lvled5.dev_attr.attr, NULL, }; #define to_dev_attr(_attr) \ container_of(_attr, struct device_attribute, attr)
static umode_t lm3533_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) { struct device *dev = container_of(kobj, struct device, kobj); struct lm3533 *lm3533 = dev_get_drvdata(dev); struct device_attribute *dattr = to_dev_attr(attr); struct lm3533_device_attribute *lattr = to_lm3533_dev_attr(dattr); enum lm3533_attribute_type type = lattr->type; umode_t mode = attr->mode; if (!lm3533->have_backlights && type == LM3533_ATTR_TYPE_BACKLIGHT) mode = 0; else if (!lm3533->have_leds && type == LM3533_ATTR_TYPE_LED) mode = 0; return mode; }

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Johan Hovold11299.12%266.67%
Dan Carpenter10.88%133.33%
Total113100.00%3100.00%

; static struct attribute_group lm3533_attribute_group = { .is_visible = lm3533_attr_is_visible, .attrs = lm3533_attributes };
static int lm3533_device_als_init(struct lm3533 *lm3533) { struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev); int ret; if (!pdata->als) return 0; lm3533_als_devs[0].platform_data = pdata->als; lm3533_als_devs[0].pdata_size = sizeof(*pdata->als); ret = mfd_add_devices(lm3533->dev, 0, lm3533_als_devs, 1, NULL, 0, NULL); if (ret) { dev_err(lm3533->dev, "failed to add ALS device\n"); return ret; } lm3533->have_als = 1; return 0; }

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Johan Hovold10595.45%133.33%
Jingoo Han32.73%133.33%
Mark Brown21.82%133.33%
Total110100.00%3100.00%


static int lm3533_device_bl_init(struct lm3533 *lm3533) { struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev); int i; int ret; if (!pdata->backlights || pdata->num_backlights == 0) return 0; if (pdata->num_backlights > ARRAY_SIZE(lm3533_bl_devs)) pdata->num_backlights = ARRAY_SIZE(lm3533_bl_devs); for (i = 0; i < pdata->num_backlights; ++i) { lm3533_bl_devs[i].platform_data = &pdata->backlights[i]; lm3533_bl_devs[i].pdata_size = sizeof(pdata->backlights[i]); } ret = mfd_add_devices(lm3533->dev, 0, lm3533_bl_devs, pdata->num_backlights, NULL, 0, NULL); if (ret) { dev_err(lm3533->dev, "failed to add backlight devices\n"); return ret; } lm3533->have_backlights = 1; return 0; }

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Johan Hovold15996.95%133.33%
Jingoo Han31.83%133.33%
Mark Brown21.22%133.33%
Total164100.00%3100.00%


static int lm3533_device_led_init(struct lm3533 *lm3533) { struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev); int i; int ret; if (!pdata->leds || pdata->num_leds == 0) return 0; if (pdata->num_leds > ARRAY_SIZE(lm3533_led_devs)) pdata->num_leds = ARRAY_SIZE(lm3533_led_devs); for (i = 0; i < pdata->num_leds; ++i) { lm3533_led_devs[i].platform_data = &pdata->leds[i]; lm3533_led_devs[i].pdata_size = sizeof(pdata->leds[i]); } ret = mfd_add_devices(lm3533->dev, 0, lm3533_led_devs, pdata->num_leds, NULL, 0, NULL); if (ret) { dev_err(lm3533->dev, "failed to add LED devices\n"); return ret; } lm3533->have_leds = 1; return 0; }

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Johan Hovold15996.95%133.33%
Jingoo Han31.83%133.33%
Mark Brown21.22%133.33%
Total164100.00%3100.00%


static int lm3533_device_setup(struct lm3533 *lm3533, struct lm3533_platform_data *pdata) { int ret; ret = lm3533_set_boost_freq(lm3533, pdata->boost_freq); if (ret) return ret; return lm3533_set_boost_ovp(lm3533, pdata->boost_ovp); }

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Johan Hovold4697.87%150.00%
Javier Martinez Canillas12.13%150.00%
Total47100.00%2100.00%


static int lm3533_device_init(struct lm3533 *lm3533) { struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev); int ret; dev_dbg(lm3533->dev, "%s\n", __func__); if (!pdata) { dev_err(lm3533->dev, "no platform data\n"); return -EINVAL; } lm3533->gpio_hwen = pdata->gpio_hwen; dev_set_drvdata(lm3533->dev, lm3533); if (gpio_is_valid(lm3533->gpio_hwen)) { ret = devm_gpio_request_one(lm3533->dev, lm3533->gpio_hwen, GPIOF_OUT_INIT_LOW, "lm3533-hwen"); if (ret < 0) { dev_err(lm3533->dev, "failed to request HWEN GPIO %d\n", lm3533->gpio_hwen); return ret; } } lm3533_enable(lm3533); ret = lm3533_device_setup(lm3533, pdata); if (ret) goto err_disable; lm3533_device_als_init(lm3533); lm3533_device_bl_init(lm3533); lm3533_device_led_init(lm3533); ret = sysfs_create_group(&lm3533->dev->kobj, &lm3533_attribute_group); if (ret < 0) { dev_err(lm3533->dev, "failed to create sysfs attributes\n"); goto err_unregister; } return 0; err_unregister: mfd_remove_devices(lm3533->dev); err_disable: lm3533_disable(lm3533); return ret; }

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Johan Hovold21196.35%250.00%
Jingoo Han83.65%250.00%
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static void lm3533_device_exit(struct lm3533 *lm3533) { dev_dbg(lm3533->dev, "%s\n", __func__); sysfs_remove_group(&lm3533->dev->kobj, &lm3533_attribute_group); mfd_remove_devices(lm3533->dev); lm3533_disable(lm3533); }

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Johan Hovold47100.00%1100.00%
Total47100.00%1100.00%


static bool lm3533_readable_register(struct device *dev, unsigned int reg) { switch (reg) { case 0x10 ... 0x2c: case 0x30 ... 0x38: case 0x40 ... 0x45: case 0x50 ... 0x57: case 0x60 ... 0x6e: case 0x70 ... 0x75: case 0x80 ... 0x85: case 0x90 ... 0x95: case 0xa0 ... 0xa5: case 0xb0 ... 0xb2: return true; default: return false; } }

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Johan Hovold78100.00%1100.00%
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static bool lm3533_volatile_register(struct device *dev, unsigned int reg) { switch (reg) { case 0x34 ... 0x36: /* zone */ case 0x37 ... 0x38: /* adc */ case 0xb0 ... 0xb1: /* fault */ return true; default: return false; } }

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Johan Hovold46100.00%2100.00%
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static bool lm3533_precious_register(struct device *dev, unsigned int reg) { switch (reg) { case 0x34: /* zone */ return true; default: return false; } }

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Johan Hovold32100.00%1100.00%
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static const struct regmap_config regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = LM3533_REG_MAX, .readable_reg = lm3533_readable_register, .volatile_reg = lm3533_volatile_register, .precious_reg = lm3533_precious_register, };
static int lm3533_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct lm3533 *lm3533; dev_dbg(&i2c->dev, "%s\n", __func__); lm3533 = devm_kzalloc(&i2c->dev, sizeof(*lm3533), GFP_KERNEL); if (!lm3533) return -ENOMEM; i2c_set_clientdata(i2c, lm3533); lm3533->regmap = devm_regmap_init_i2c(i2c, &regmap_config); if (IS_ERR(lm3533->regmap)) return PTR_ERR(lm3533->regmap); lm3533->dev = &i2c->dev; lm3533->irq = i2c->irq; return lm3533_device_init(lm3533); }

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Johan Hovold11999.17%266.67%
Javier Martinez Canillas10.83%133.33%
Total120100.00%3100.00%


static int lm3533_i2c_remove(struct i2c_client *i2c) { struct lm3533 *lm3533 = i2c_get_clientdata(i2c); dev_dbg(&i2c->dev, "%s\n", __func__); lm3533_device_exit(lm3533); return 0; }

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Johan Hovold41100.00%1100.00%
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static const struct i2c_device_id lm3533_i2c_ids[] = { { "lm3533", 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, lm3533_i2c_ids); static struct i2c_driver lm3533_i2c_driver = { .driver = { .name = "lm3533", }, .id_table = lm3533_i2c_ids, .probe = lm3533_i2c_probe, .remove = lm3533_i2c_remove, };
static int __init lm3533_i2c_init(void) { return i2c_add_driver(&lm3533_i2c_driver); }

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Johan Hovold16100.00%1100.00%
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subsys_initcall(lm3533_i2c_init);
static void __exit lm3533_i2c_exit(void) { i2c_del_driver(&lm3533_i2c_driver); }

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module_exit(lm3533_i2c_exit); MODULE_AUTHOR("Johan Hovold <jhovold@gmail.com>"); MODULE_DESCRIPTION("LM3533 Core"); MODULE_LICENSE("GPL");

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Johan Hovold264998.92%541.67%
Jingoo Han170.63%216.67%
Mark Brown60.22%18.33%
Javier Martinez Canillas20.07%18.33%
Axel Lin20.07%18.33%
Dan Carpenter10.04%18.33%
Krzysztof Kozlowski10.04%18.33%
Total2678100.00%12100.00%
Directory: drivers/mfd
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