diff options
Diffstat (limited to 'drivers/power/twl4030_charger.c')
| -rw-r--r-- | drivers/power/twl4030_charger.c | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c index 74f2d3ff1..bcd4dc304 100644 --- a/drivers/power/twl4030_charger.c +++ b/drivers/power/twl4030_charger.c @@ -22,7 +22,7 @@ #include <linux/power_supply.h> #include <linux/notifier.h> #include <linux/usb/otg.h> -#include <linux/i2c/twl4030-madc.h> +#include <linux/iio/consumer.h> #define TWL4030_BCIMDEN 0x00 #define TWL4030_BCIMDKEY 0x01 @@ -91,21 +91,23 @@ #define TWL4030_MSTATEC_COMPLETE1 0x0b #define TWL4030_MSTATEC_COMPLETE4 0x0e -#if IS_REACHABLE(CONFIG_TWL4030_MADC) /* * If AC (Accessory Charger) voltage exceeds 4.5V (MADC 11) * then AC is available. */ -static inline int ac_available(void) +static inline int ac_available(struct iio_channel *channel_vac) { - return twl4030_get_madc_conversion(11) > 4500; -} -#else -static inline int ac_available(void) -{ - return 0; + int val, err; + + if (!channel_vac) + return 0; + + err = iio_read_channel_processed(channel_vac, &val); + if (err < 0) + return 0; + return val > 4500; } -#endif + static bool allow_usb; module_param(allow_usb, bool, 0644); MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current"); @@ -128,6 +130,7 @@ struct twl4030_bci { */ unsigned int ichg_eoc, ichg_lo, ichg_hi; unsigned int usb_cur, ac_cur; + struct iio_channel *channel_vac; bool ac_is_active; int usb_mode, ac_mode; /* charging mode requested */ #define CHARGE_OFF 0 @@ -278,7 +281,7 @@ static int twl4030_charger_update_current(struct twl4030_bci *bci) * If AC (Accessory Charger) voltage exceeds 4.5V (MADC 11) * and AC is enabled, set current for 'ac' */ - if (ac_available()) { + if (ac_available(bci->channel_vac)) { cur = bci->ac_cur; bci->ac_is_active = true; } else { @@ -1048,6 +1051,12 @@ static int twl4030_bci_probe(struct platform_device *pdev) return ret; } + bci->channel_vac = iio_channel_get(&pdev->dev, "vac"); + if (IS_ERR(bci->channel_vac)) { + bci->channel_vac = NULL; + dev_warn(&pdev->dev, "could not request vac iio channel"); + } + INIT_WORK(&bci->work, twl4030_bci_usb_work); INIT_DELAYED_WORK(&bci->current_worker, twl4030_current_worker); @@ -1069,7 +1078,7 @@ static int twl4030_bci_probe(struct platform_device *pdev) TWL4030_INTERRUPTS_BCIIMR1A); if (ret < 0) { dev_err(&pdev->dev, "failed to unmask interrupts: %d\n", ret); - return ret; + goto fail; } reg = ~(u32)(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV); @@ -1102,6 +1111,10 @@ static int twl4030_bci_probe(struct platform_device *pdev) twl4030_charger_enable_backup(0, 0); return 0; +fail: + iio_channel_release(bci->channel_vac); + + return ret; } static int __exit twl4030_bci_remove(struct platform_device *pdev) @@ -1112,6 +1125,8 @@ static int __exit twl4030_bci_remove(struct platform_device *pdev) twl4030_charger_enable_usb(bci, false); twl4030_charger_enable_backup(0, 0); + iio_channel_release(bci->channel_vac); + 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); |