cregit-Linux how code gets into the kernel

Release 4.14 drivers/power/supply/cpcap-charger.c

/*
 * Motorola CPCAP PMIC battery charger driver
 *
 * Copyright (C) 2017 Tony Lindgren <tony@atomide.com>
 *
 * Rewritten for Linux power framework with some parts based on
 * on earlier driver found in the Motorola Linux kernel:
 *
 * Copyright (C) 2009-2010 Motorola, Inc.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#include <linux/atomic.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/regmap.h>

#include <linux/gpio/consumer.h>
#include <linux/usb/phy_companion.h>
#include <linux/phy/omap_usb.h>
#include <linux/usb/otg.h>
#include <linux/iio/consumer.h>
#include <linux/mfd/motorola-cpcap.h>

/*
 * CPCAP_REG_CRM register bits. For documentation of somewhat similar hardware,
 * see NXP "MC13783 Power Management and Audio Circuit Users's Guide"
 * MC13783UG.pdf chapter "8.5 Battery Interface Register Summary". The registers
 * and values for CPCAP are different, but some of the internal components seem
 * similar. Also see the Motorola Linux kernel cpcap-regbits.h. CPCAP_REG_CHRGR_1
 * bits that seem to describe the CRM register.
 */

#define CPCAP_REG_CRM_UNUSED_641_15	BIT(15)	
/* 641 = register number */

#define CPCAP_REG_CRM_UNUSED_641_14	BIT(14)	
/* 641 = register number */

#define CPCAP_REG_CRM_CHRG_LED_EN	BIT(13)	
/* Charger LED */

#define CPCAP_REG_CRM_RVRSMODE		BIT(12)	
/* USB VBUS output enable */

#define CPCAP_REG_CRM_ICHRG_TR1		BIT(11)	
/* Trickle charge current */

#define CPCAP_REG_CRM_ICHRG_TR0		BIT(10)

#define CPCAP_REG_CRM_FET_OVRD		BIT(9)	
/* 0 = hardware, 1 = FET_CTRL */

#define CPCAP_REG_CRM_FET_CTRL		BIT(8)	
/* BPFET 1 if FET_OVRD set */

#define CPCAP_REG_CRM_VCHRG3		BIT(7)	
/* Charge voltage bits */

#define CPCAP_REG_CRM_VCHRG2		BIT(6)

#define CPCAP_REG_CRM_VCHRG1		BIT(5)

#define CPCAP_REG_CRM_VCHRG0		BIT(4)

#define CPCAP_REG_CRM_ICHRG3		BIT(3)	
/* Charge current bits */

#define CPCAP_REG_CRM_ICHRG2		BIT(2)

#define CPCAP_REG_CRM_ICHRG1		BIT(1)

#define CPCAP_REG_CRM_ICHRG0		BIT(0)

/* CPCAP_REG_CRM trickle charge voltages */

#define CPCAP_REG_CRM_TR(val)		(((val) & 0x3) << 10)

#define CPCAP_REG_CRM_TR_0A00		CPCAP_REG_CRM_TR(0x0)

#define CPCAP_REG_CRM_TR_0A24		CPCAP_REG_CRM_TR(0x1)

#define CPCAP_REG_CRM_TR_0A48		CPCAP_REG_CRM_TR(0x2)

#define CPCAP_REG_CRM_TR_0A72		CPCAP_REG_CRM_TR(0x4)

/*
 * CPCAP_REG_CRM charge voltages based on the ADC channel 1 values.
 * Note that these register bits don't match MC13783UG.pdf VCHRG
 * register bits.
 */

#define CPCAP_REG_CRM_VCHRG(val)	(((val) & 0xf) << 4)

#define CPCAP_REG_CRM_VCHRG_3V80	CPCAP_REG_CRM_VCHRG(0x0)

#define CPCAP_REG_CRM_VCHRG_4V10	CPCAP_REG_CRM_VCHRG(0x1)

#define CPCAP_REG_CRM_VCHRG_4V12	CPCAP_REG_CRM_VCHRG(0x2)

#define CPCAP_REG_CRM_VCHRG_4V15	CPCAP_REG_CRM_VCHRG(0x3)

#define CPCAP_REG_CRM_VCHRG_4V17	CPCAP_REG_CRM_VCHRG(0x4)

#define CPCAP_REG_CRM_VCHRG_4V20	CPCAP_REG_CRM_VCHRG(0x5)

#define CPCAP_REG_CRM_VCHRG_4V23	CPCAP_REG_CRM_VCHRG(0x6)

#define CPCAP_REG_CRM_VCHRG_4V25	CPCAP_REG_CRM_VCHRG(0x7)

#define CPCAP_REG_CRM_VCHRG_4V27	CPCAP_REG_CRM_VCHRG(0x8)

#define CPCAP_REG_CRM_VCHRG_4V30	CPCAP_REG_CRM_VCHRG(0x9)

#define CPCAP_REG_CRM_VCHRG_4V33	CPCAP_REG_CRM_VCHRG(0xa)

#define CPCAP_REG_CRM_VCHRG_4V35	CPCAP_REG_CRM_VCHRG(0xb)

#define CPCAP_REG_CRM_VCHRG_4V38	CPCAP_REG_CRM_VCHRG(0xc)

#define CPCAP_REG_CRM_VCHRG_4V40	CPCAP_REG_CRM_VCHRG(0xd)

#define CPCAP_REG_CRM_VCHRG_4V42	CPCAP_REG_CRM_VCHRG(0xe)

#define CPCAP_REG_CRM_VCHRG_4V44	CPCAP_REG_CRM_VCHRG(0xf)

/*
 * CPCAP_REG_CRM charge currents. These seem to match MC13783UG.pdf
 * values in "Table 8-3. Charge Path Regulator Current Limit
 * Characteristics" for the nominal values.
 */

#define CPCAP_REG_CRM_ICHRG(val)	(((val) & 0xf) << 0)

#define CPCAP_REG_CRM_ICHRG_0A000	CPCAP_REG_CRM_ICHRG(0x0)

#define CPCAP_REG_CRM_ICHRG_0A070	CPCAP_REG_CRM_ICHRG(0x1)

#define CPCAP_REG_CRM_ICHRG_0A177	CPCAP_REG_CRM_ICHRG(0x2)

#define CPCAP_REG_CRM_ICHRG_0A266	CPCAP_REG_CRM_ICHRG(0x3)

#define CPCAP_REG_CRM_ICHRG_0A355	CPCAP_REG_CRM_ICHRG(0x4)

#define CPCAP_REG_CRM_ICHRG_0A443	CPCAP_REG_CRM_ICHRG(0x5)

#define CPCAP_REG_CRM_ICHRG_0A532	CPCAP_REG_CRM_ICHRG(0x6)

#define CPCAP_REG_CRM_ICHRG_0A621	CPCAP_REG_CRM_ICHRG(0x7)

#define CPCAP_REG_CRM_ICHRG_0A709	CPCAP_REG_CRM_ICHRG(0x8)

#define CPCAP_REG_CRM_ICHRG_0A798	CPCAP_REG_CRM_ICHRG(0x9)

#define CPCAP_REG_CRM_ICHRG_0A886	CPCAP_REG_CRM_ICHRG(0xa)

#define CPCAP_REG_CRM_ICHRG_0A975	CPCAP_REG_CRM_ICHRG(0xb)

#define CPCAP_REG_CRM_ICHRG_1A064	CPCAP_REG_CRM_ICHRG(0xc)

#define CPCAP_REG_CRM_ICHRG_1A152	CPCAP_REG_CRM_ICHRG(0xd)

#define CPCAP_REG_CRM_ICHRG_1A596	CPCAP_REG_CRM_ICHRG(0xe)

#define CPCAP_REG_CRM_ICHRG_NO_LIMIT	CPCAP_REG_CRM_ICHRG(0xf)

enum {
	
CPCAP_CHARGER_IIO_BATTDET,
	
CPCAP_CHARGER_IIO_VOLTAGE,
	
CPCAP_CHARGER_IIO_VBUS,
	
CPCAP_CHARGER_IIO_CHRG_CURRENT,
	
CPCAP_CHARGER_IIO_BATT_CURRENT,
	
CPCAP_CHARGER_IIO_NR,
};


struct cpcap_charger_ddata {
	
struct device *dev;
	
struct regmap *reg;
	
struct list_head irq_list;
	
struct delayed_work detect_work;
	
struct delayed_work vbus_work;
	
struct gpio_desc *gpio[2];		/* gpio_reven0 & 1 */

	
struct iio_channel *channels[CPCAP_CHARGER_IIO_NR];

	
struct power_supply *usb;

	
struct phy_companion comparator;	/* For USB VBUS */
	
bool vbus_enabled;
	
atomic_t active;

	
int status;
};


struct cpcap_interrupt_desc {
	
int irq;
	
struct list_head node;
	
const char *name;
};


struct cpcap_charger_ints_state {
	
bool chrg_det;
	
bool rvrs_chrg;
	
bool vbusov;

	
bool chrg_se1b;
	
bool rvrs_mode;
	
bool chrgcurr1;
	
bool vbusvld;

	
bool battdetb;
};


static enum power_supply_property cpcap_charger_props[] = {
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_ONLINE,
	POWER_SUPPLY_PROP_VOLTAGE_NOW,
	POWER_SUPPLY_PROP_CURRENT_NOW,
};


static bool cpcap_charger_battery_found(struct cpcap_charger_ddata *ddata) { struct iio_channel *channel; int error, value; channel = ddata->channels[CPCAP_CHARGER_IIO_BATTDET]; error = iio_read_channel_raw(channel, &value); if (error < 0) { dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); return false; } return value == 1; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren69100.00%1100.00%
Total69100.00%1100.00%


static int cpcap_charger_get_charge_voltage(struct cpcap_charger_ddata *ddata) { struct iio_channel *channel; int error, value = 0; channel = ddata->channels[CPCAP_CHARGER_IIO_VOLTAGE]; error = iio_read_channel_processed(channel, &value); if (error < 0) { dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); return 0; } return value; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren69100.00%1100.00%
Total69100.00%1100.00%


static int cpcap_charger_get_charge_current(struct cpcap_charger_ddata *ddata) { struct iio_channel *channel; int error, value = 0; channel = ddata->channels[CPCAP_CHARGER_IIO_CHRG_CURRENT]; error = iio_read_channel_processed(channel, &value); if (error < 0) { dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); return 0; } return value; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren69100.00%1100.00%
Total69100.00%1100.00%


static int cpcap_charger_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct cpcap_charger_ddata *ddata = dev_get_drvdata(psy->dev.parent); switch (psp) { case POWER_SUPPLY_PROP_STATUS: val->intval = ddata->status; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: if (ddata->status == POWER_SUPPLY_STATUS_CHARGING) val->intval = cpcap_charger_get_charge_voltage(ddata) * 1000; else val->intval = 0; break; case POWER_SUPPLY_PROP_CURRENT_NOW: if (ddata->status == POWER_SUPPLY_STATUS_CHARGING) val->intval = cpcap_charger_get_charge_current(ddata) * 1000; else val->intval = 0; break; case POWER_SUPPLY_PROP_ONLINE: val->intval = ddata->status == POWER_SUPPLY_STATUS_CHARGING; break; default: return -EINVAL; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren134100.00%1100.00%
Total134100.00%1100.00%


static void cpcap_charger_set_cable_path(struct cpcap_charger_ddata *ddata, bool enabled) { if (!ddata->gpio[0]) return; gpiod_set_value(ddata->gpio[0], enabled); }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren37100.00%1100.00%
Total37100.00%1100.00%


static void cpcap_charger_set_inductive_path(struct cpcap_charger_ddata *ddata, bool enabled) { if (!ddata->gpio[1]) return; gpiod_set_value(ddata->gpio[1], enabled); }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren37100.00%1100.00%
Total37100.00%1100.00%


static int cpcap_charger_set_state(struct cpcap_charger_ddata *ddata, int max_voltage, int charge_current, int trickle_current) { bool enable; int error; enable = (charge_current || trickle_current); dev_dbg(ddata->dev, "%s enable: %i\n", __func__, enable); if (!enable) { error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, 0x3fff, CPCAP_REG_CRM_FET_OVRD | CPCAP_REG_CRM_FET_CTRL); if (error) { ddata->status = POWER_SUPPLY_STATUS_UNKNOWN; goto out_err; } ddata->status = POWER_SUPPLY_STATUS_DISCHARGING; return 0; } error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, 0x3fff, CPCAP_REG_CRM_CHRG_LED_EN | trickle_current | CPCAP_REG_CRM_FET_OVRD | CPCAP_REG_CRM_FET_CTRL | max_voltage | charge_current); if (error) { ddata->status = POWER_SUPPLY_STATUS_UNKNOWN; goto out_err; } ddata->status = POWER_SUPPLY_STATUS_CHARGING; return 0; out_err: dev_err(ddata->dev, "%s failed with %i\n", __func__, error); return error; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren162100.00%1100.00%
Total162100.00%1100.00%


static bool cpcap_charger_vbus_valid(struct cpcap_charger_ddata *ddata) { int error, value = 0; struct iio_channel *channel = ddata->channels[CPCAP_CHARGER_IIO_VBUS]; error = iio_read_channel_processed(channel, &value); if (error >= 0) return value > 3900 ? true : false; dev_err(ddata->dev, "error reading VBUS: %i\n", error); return false; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren69100.00%1100.00%
Total69100.00%1100.00%

/* VBUS control functions for the USB PHY companion */
static void cpcap_charger_vbus_work(struct work_struct *work) { struct cpcap_charger_ddata *ddata; bool vbus = false; int error; ddata = container_of(work, struct cpcap_charger_ddata, vbus_work.work); if (ddata->vbus_enabled) { vbus = cpcap_charger_vbus_valid(ddata); if (vbus) { dev_info(ddata->dev, "VBUS already provided\n"); return; } cpcap_charger_set_cable_path(ddata, false); cpcap_charger_set_inductive_path(ddata, false); error = cpcap_charger_set_state(ddata, 0, 0, 0); if (error) goto out_err; error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, CPCAP_REG_CRM_RVRSMODE, CPCAP_REG_CRM_RVRSMODE); if (error) goto out_err; } else { error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, CPCAP_REG_CRM_RVRSMODE, 0); if (error) goto out_err; cpcap_charger_set_cable_path(ddata, true); cpcap_charger_set_inductive_path(ddata, true); } return; out_err: dev_err(ddata->dev, "%s could not %s vbus: %i\n", __func__, ddata->vbus_enabled ? "enable" : "disable", error); }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren188100.00%1100.00%
Total188100.00%1100.00%


static int cpcap_charger_set_vbus(struct phy_companion *comparator, bool enabled) { struct cpcap_charger_ddata *ddata = container_of(comparator, struct cpcap_charger_ddata, comparator); ddata->vbus_enabled = enabled; schedule_delayed_work(&ddata->vbus_work, 0); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren48100.00%1100.00%
Total48100.00%1100.00%

/* Charger interrupt handling functions */
static int cpcap_charger_get_ints_state(struct cpcap_charger_ddata *ddata, struct cpcap_charger_ints_state *s) { int val, error; error = regmap_read(ddata->reg, CPCAP_REG_INTS1, &val); if (error) return error; s->chrg_det = val & BIT(13); s->rvrs_chrg = val & BIT(12); s->vbusov = val & BIT(11); error = regmap_read(ddata->reg, CPCAP_REG_INTS2, &val); if (error) return error; s->chrg_se1b = val & BIT(13); s->rvrs_mode = val & BIT(6); s->chrgcurr1 = val & BIT(4); s->vbusvld = val & BIT(3); error = regmap_read(ddata->reg, CPCAP_REG_INTS4, &val); if (error) return error; s->battdetb = val & BIT(6); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren175100.00%1100.00%
Total175100.00%1100.00%


static void cpcap_usb_detect(struct work_struct *work) { struct cpcap_charger_ddata *ddata; struct cpcap_charger_ints_state s; int error; ddata = container_of(work, struct cpcap_charger_ddata, detect_work.work); error = cpcap_charger_get_ints_state(ddata, &s); if (error) return; if (cpcap_charger_vbus_valid(ddata) && s.chrgcurr1) { int max_current; if (cpcap_charger_battery_found(ddata)) max_current = CPCAP_REG_CRM_ICHRG_1A596; else max_current = CPCAP_REG_CRM_ICHRG_0A532; error = cpcap_charger_set_state(ddata, CPCAP_REG_CRM_VCHRG_4V35, max_current, 0); if (error) goto out_err; } else { error = cpcap_charger_set_state(ddata, 0, 0, 0); if (error) goto out_err; } return; out_err: dev_err(ddata->dev, "%s failed with %i\n", __func__, error); }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren143100.00%4100.00%
Total143100.00%4100.00%


static irqreturn_t cpcap_charger_irq_thread(int irq, void *data) { struct cpcap_charger_ddata *ddata = data; if (!atomic_read(&ddata->active)) return IRQ_NONE; schedule_delayed_work(&ddata->detect_work, 0); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren47100.00%1100.00%
Total47100.00%1100.00%


static int cpcap_usb_init_irq(struct platform_device *pdev, struct cpcap_charger_ddata *ddata, const char *name) { struct cpcap_interrupt_desc *d; int irq, error; irq = platform_get_irq_byname(pdev, name); if (!irq) return -ENODEV; error = devm_request_threaded_irq(ddata->dev, irq, NULL, cpcap_charger_irq_thread, IRQF_SHARED, name, ddata); if (error) { dev_err(ddata->dev, "could not get irq %s: %i\n", name, error); return error; } d = devm_kzalloc(ddata->dev, sizeof(*d), GFP_KERNEL); if (!d) return -ENOMEM; d->name = name; d->irq = irq; list_add(&d->node, &ddata->irq_list); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren146100.00%1100.00%
Total146100.00%1100.00%

static const char * const cpcap_charger_irqs[] = { /* REG_INT_0 */ "chrg_det", "rvrs_chrg", /* REG_INT1 */ "chrg_se1b", "se0conn", "rvrs_mode", "chrgcurr1", "vbusvld", /* REG_INT_3 */ "battdetb", };
static int cpcap_usb_init_interrupts(struct platform_device *pdev, struct cpcap_charger_ddata *ddata) { int i, error; for (i = 0; i < ARRAY_SIZE(cpcap_charger_irqs); i++) { error = cpcap_usb_init_irq(pdev, ddata, cpcap_charger_irqs[i]); if (error) return error; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren63100.00%1100.00%
Total63100.00%1100.00%


static void cpcap_charger_init_optional_gpios(struct cpcap_charger_ddata *ddata) { int i; for (i = 0; i < 2; i++) { ddata->gpio[i] = devm_gpiod_get_index(ddata->dev, "mode", i, GPIOD_OUT_HIGH); if (IS_ERR(ddata->gpio[i])) { dev_info(ddata->dev, "no mode change GPIO%i: %li\n", i, PTR_ERR(ddata->gpio[i])); ddata->gpio[i] = NULL; } } }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren93100.00%1100.00%
Total93100.00%1100.00%


static int cpcap_charger_init_iio(struct cpcap_charger_ddata *ddata) { const char * const names[CPCAP_CHARGER_IIO_NR] = { "battdetb", "battp", "vbus", "chg_isense", "batti", }; int error, i; for (i = 0; i < CPCAP_CHARGER_IIO_NR; i++) { ddata->channels[i] = devm_iio_channel_get(ddata->dev, names[i]); if (IS_ERR(ddata->channels[i])) { error = PTR_ERR(ddata->channels[i]); goto out_err; } if (!ddata->channels[i]->indio_dev) { error = -ENXIO; goto out_err; } } return 0; out_err: dev_err(ddata->dev, "could not initialize VBUS or ID IIO: %i\n", error); return error; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren141100.00%1100.00%
Total141100.00%1100.00%

static const struct power_supply_desc cpcap_charger_usb_desc = { .name = "usb", .type = POWER_SUPPLY_TYPE_USB, .properties = cpcap_charger_props, .num_properties = ARRAY_SIZE(cpcap_charger_props), .get_property = cpcap_charger_get_property, }; #ifdef CONFIG_OF static const struct of_device_id cpcap_charger_id_table[] = { { .compatible = "motorola,mapphone-cpcap-charger", }, {}, }; MODULE_DEVICE_TABLE(of, cpcap_charger_id_table); #endif
static int cpcap_charger_probe(struct platform_device *pdev) { struct cpcap_charger_ddata *ddata; const struct of_device_id *of_id; struct power_supply_config psy_cfg = {}; int error; of_id = of_match_device(of_match_ptr(cpcap_charger_id_table), &pdev->dev); if (!of_id) return -EINVAL; ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); if (!ddata) return -ENOMEM; ddata->dev = &pdev->dev; ddata->reg = dev_get_regmap(ddata->dev->parent, NULL); if (!ddata->reg) return -ENODEV; INIT_LIST_HEAD(&ddata->irq_list); INIT_DELAYED_WORK(&ddata->detect_work, cpcap_usb_detect); INIT_DELAYED_WORK(&ddata->vbus_work, cpcap_charger_vbus_work); platform_set_drvdata(pdev, ddata); error = cpcap_charger_init_iio(ddata); if (error) return error; atomic_set(&ddata->active, 1); psy_cfg.of_node = pdev->dev.of_node; psy_cfg.drv_data = ddata; ddata->usb = devm_power_supply_register(ddata->dev, &cpcap_charger_usb_desc, &psy_cfg); if (IS_ERR(ddata->usb)) { error = PTR_ERR(ddata->usb); dev_err(ddata->dev, "failed to register USB charger: %i\n", error); return error; } error = cpcap_usb_init_interrupts(pdev, ddata); if (error) return error; ddata->comparator.set_vbus = cpcap_charger_set_vbus; error = omap_usb2_set_comparator(&ddata->comparator); if (error == -ENODEV) { dev_info(ddata->dev, "charger needs phy, deferring probe\n"); return -EPROBE_DEFER; } cpcap_charger_init_optional_gpios(ddata); schedule_delayed_work(&ddata->detect_work, 0); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren317100.00%2100.00%
Total317100.00%2100.00%


static int cpcap_charger_remove(struct platform_device *pdev) { struct cpcap_charger_ddata *ddata = platform_get_drvdata(pdev); int error; atomic_set(&ddata->active, 0); error = omap_usb2_set_comparator(NULL); if (error) dev_warn(ddata->dev, "could not clear USB comparator: %i\n", error); error = cpcap_charger_set_state(ddata, 0, 0, 0); if (error) dev_warn(ddata->dev, "could not clear charger: %i\n", error); cancel_delayed_work_sync(&ddata->vbus_work); cancel_delayed_work_sync(&ddata->detect_work); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren103100.00%1100.00%
Total103100.00%1100.00%

static struct platform_driver cpcap_charger_driver = { .probe = cpcap_charger_probe, .driver = { .name = "cpcap-charger", .of_match_table = of_match_ptr(cpcap_charger_id_table), }, .remove = cpcap_charger_remove, }; module_platform_driver(cpcap_charger_driver); MODULE_AUTHOR("Tony Lindgren <tony@atomide.com>"); MODULE_DESCRIPTION("CPCAP Battery Charger Interface driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:cpcap-charger");

Overall Contributors

PersonTokensPropCommitsCommitProp
Tony Lindgren2704100.00%7100.00%
Total2704100.00%7100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.