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authorNeilBrown <neil@brown.name>2015-07-30 10:11:24 +1000
committerSebastian Reichel <sre@kernel.org>2015-08-05 05:21:57 +0200
commitb04b908d8a2901c2cc59db87defd9c08bd4293cc (patch)
treecc66542acca233a902d606d775b66c31a42193f9 /drivers/power
parent7f4a633d21331155ee06c5ee44749ed35a3a3cc5 (diff)
downloadlinux-b04b908d8a2901c2cc59db87defd9c08bd4293cc.tar.bz2
twl4030_charger: add ac/mode to match usb/mode
This allows AC charging to be turned off, much like usb charging. "continuous" mode is not available though. Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: NeilBrown <neil@brown.name> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/twl4030_charger.c35
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c
index de5430deaf23..68117ad23564 100644
--- a/drivers/power/twl4030_charger.c
+++ b/drivers/power/twl4030_charger.c
@@ -114,7 +114,7 @@ struct twl4030_bci {
unsigned int ichg_eoc, ichg_lo, ichg_hi;
unsigned int usb_cur, ac_cur;
bool ac_is_active;
- int usb_mode; /* charging mode requested */
+ int usb_mode, ac_mode; /* charging mode requested */
#define CHARGE_OFF 0
#define CHARGE_AUTO 1
#define CHARGE_LINEAR 2
@@ -459,10 +459,13 @@ static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable)
/*
* Enable/Disable AC Charge funtionality.
*/
-static int twl4030_charger_enable_ac(bool enable)
+static int twl4030_charger_enable_ac(struct twl4030_bci *bci, bool enable)
{
int ret;
+ if (bci->ac_mode == CHARGE_OFF)
+ enable = false;
+
if (enable)
ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOAC);
else
@@ -688,9 +691,17 @@ twl4030_bci_mode_store(struct device *dev, struct device_attribute *attr,
mode = 2;
else
return -EINVAL;
- twl4030_charger_enable_usb(bci, false);
- bci->usb_mode = mode;
- status = twl4030_charger_enable_usb(bci, true);
+ if (dev == &bci->ac->dev) {
+ if (mode == 2)
+ return -EINVAL;
+ twl4030_charger_enable_ac(bci, false);
+ bci->ac_mode = mode;
+ status = twl4030_charger_enable_ac(bci, true);
+ } else {
+ twl4030_charger_enable_usb(bci, false);
+ bci->usb_mode = mode;
+ status = twl4030_charger_enable_usb(bci, true);
+ }
return (status == 0) ? n : status;
}
@@ -704,9 +715,13 @@ twl4030_bci_mode_show(struct device *dev,
struct twl4030_bci *bci = dev_get_drvdata(dev->parent);
int len = 0;
int i;
+ int mode = bci->usb_mode;
+
+ if (dev == &bci->ac->dev)
+ mode = bci->ac_mode;
for (i = 0; i < ARRAY_SIZE(modes); i++)
- if (bci->usb_mode == i)
+ if (mode == i)
len += snprintf(buf+len, PAGE_SIZE-len,
"[%s] ", modes[i]);
else
@@ -916,6 +931,7 @@ static int twl4030_bci_probe(struct platform_device *pdev)
else
bci->usb_cur = 100000; /* 100mA */
bci->usb_mode = CHARGE_AUTO;
+ bci->ac_mode = CHARGE_AUTO;
bci->dev = &pdev->dev;
bci->irq_chg = platform_get_irq(pdev, 0);
@@ -1001,10 +1017,12 @@ static int twl4030_bci_probe(struct platform_device *pdev)
dev_warn(&pdev->dev, "could not create sysfs file\n");
if (device_create_file(&bci->usb->dev, &dev_attr_mode))
dev_warn(&pdev->dev, "could not create sysfs file\n");
+ if (device_create_file(&bci->ac->dev, &dev_attr_mode))
+ dev_warn(&pdev->dev, "could not create sysfs file\n");
if (device_create_file(&bci->ac->dev, &dev_attr_max_current))
dev_warn(&pdev->dev, "could not create sysfs file\n");
- twl4030_charger_enable_ac(true);
+ twl4030_charger_enable_ac(bci, true);
if (!IS_ERR_OR_NULL(bci->transceiver))
twl4030_bci_usb_ncb(&bci->usb_nb,
bci->transceiver->last_event,
@@ -1024,13 +1042,14 @@ static int __exit twl4030_bci_remove(struct platform_device *pdev)
{
struct twl4030_bci *bci = platform_get_drvdata(pdev);
- twl4030_charger_enable_ac(false);
+ twl4030_charger_enable_ac(bci, false);
twl4030_charger_enable_usb(bci, false);
twl4030_charger_enable_backup(0, 0);
device_remove_file(&bci->usb->dev, &dev_attr_max_current);
device_remove_file(&bci->usb->dev, &dev_attr_mode);
device_remove_file(&bci->ac->dev, &dev_attr_max_current);
+ device_remove_file(&bci->ac->dev, &dev_attr_mode);
/* mask interrupts */
twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
TWL4030_INTERRUPTS_BCIIMR1A);