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Commit 36f48098 authored by Umang Agrawal's avatar Umang Agrawal
Browse files

power: smb1390: Add cp_irq and toggle_switcher property 



Currently to prevent SMB1390 from getting stuck in disabled
state on IREV IRQ, switcher is toggled. As an optimization to
this workaround, voltage needs to be increment first before
switcher toggling to break the latching of IREV IRQ status
on WIN_UV.

Add cp_irq and toggle_switcher property to allow userspace
daemon to increment the voltage and initaite the switcher
toggle.

Change-Id: I11fbc5877a2df9ce4d0208c698b8758adae1d035
Signed-off-by: default avatarUmang Agrawal <uagrawal@codeaurora.org>
parent fc4ee1f6

drivers/power/supply/qcom/smb1390-charger.c

+50 −29
Original line number Diff line number Diff line
@@ -82,6 +82,7 @@ 
#define FCC_VOTER	"FCC_VOTER"

#define ICL_VOTER	"ICL_VOTER"

#define USB_VOTER	"USB_VOTER"

#define SWITCHER_TOGGLE_VOTER	"SWITCHER_TOGGLE_VOTER"



enum {

	SWITCHER_OFF_WINDOW_IRQ = 0,
@@ -126,6 +127,7 @@ struct smb1390 { 
	bool			status_change_running;

	bool			taper_work_running;

	int			adc_channel;

	int			irq_status;

};



struct smb_irq {
@@ -206,44 +208,29 @@ static bool is_psy_voter_available(struct smb1390 *chip) 
	return true;

}



static irqreturn_t default_irq_handler(int irq, void *data)

static void cp_toggle_switcher(struct smb1390 *chip)

{

	struct smb1390 *chip = data;

	int i;

	vote(chip->disable_votable, SWITCHER_TOGGLE_VOTER, true, 0);



	for (i = 0; i < NUM_IRQS; ++i) {

		if (irq == chip->irqs[i])

			pr_debug("%s IRQ triggered\n", smb_irqs[i].name);

	}

	/* Delay for toggling switcher */

	usleep_range(20, 30);



	kobject_uevent(&chip->dev->kobj, KOBJ_CHANGE);

	return IRQ_HANDLED;

	vote(chip->disable_votable, SWITCHER_TOGGLE_VOTER, false, 0);



	return;

}



static irqreturn_t irev_irq_handler(int irq, void *data)

static irqreturn_t default_irq_handler(int irq, void *data)

{

	struct smb1390 *chip = data;

	int rc;



	pr_debug("IREV IRQ triggered\n");



	rc = smb1390_masked_write(chip, CORE_CONTROL1_REG,

			CMD_EN_SWITCHER_BIT, 0);

	if (rc < 0) {

		pr_err("Couldn't disable switcher by command mode, rc=%d\n",

			rc);

		goto out;

	}

	int i;



	rc = smb1390_masked_write(chip, CORE_CONTROL1_REG,

			CMD_EN_SWITCHER_BIT, CMD_EN_SWITCHER_BIT);

	if (rc < 0) {

		pr_err("Couldn't enable switcher by command mode, rc=%d\n",

			rc);

		goto out;

	for (i = 0; i < NUM_IRQS; ++i) {

		if (irq == chip->irqs[i])

			pr_debug("%s IRQ triggered\n", smb_irqs[i].name);

			chip->irq_status |= 1 << i;

	}



out:

	kobject_uevent(&chip->dev->kobj, KOBJ_CHANGE);

	return IRQ_HANDLED;

}
@@ -266,7 +253,7 @@ static const struct smb_irq smb_irqs[] = { 
	},

	[IREV_IRQ] = {

		.name		= "irev-fault",

		.handler	= irev_irq_handler,

		.handler	= default_irq_handler,

		.wake		= true,

	},

	[VPH_OV_HARD_IRQ] = {
@@ -340,6 +327,38 @@ static ssize_t enable_store(struct class *c, struct class_attribute *attr, 
	return count;

}



static ssize_t cp_irq_show(struct class *c, struct class_attribute *attr,

			char *buf)

{

	struct smb1390 *chip = container_of(c, struct smb1390, cp_class);

	int rc, val;



	rc = smb1390_read(chip, CORE_INT_RT_STS_REG, &val);

	if (rc < 0)

		return -EINVAL;



	val |= chip->irq_status;

	chip->irq_status = 0;



	return snprintf(buf, PAGE_SIZE, "%x\n", val);

}



static ssize_t toggle_switcher_store(struct class *c,

			struct class_attribute *attr, const char *buf,

			size_t count)

{

	struct smb1390 *chip = container_of(c, struct smb1390, cp_class);

	unsigned long val;



	if (kstrtoul(buf, 0, &val))

		return -EINVAL;



	if (val)

		cp_toggle_switcher(chip);



	return count;

}



static ssize_t die_temp_show(struct class *c, struct class_attribute *attr,

			     char *buf)

{
@@ -360,6 +379,8 @@ static struct class_attribute cp_class_attrs[] = { 
	__ATTR_RO(stat1),

	__ATTR_RO(stat2),

	__ATTR_RW(enable),

	__ATTR_RO(cp_irq),

	__ATTR_WO(toggle_switcher),

	__ATTR_RO(die_temp),

	__ATTR_NULL,

};