Messages in this thread Patch in this message | | | From | Felipe Balbi <> | Subject | [PATCH] extcon: palmas: add support for using VBUSDET output | Date | Thu, 12 Nov 2015 11:57:14 -0600 |
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TPS659038 can remux its GPIO_1 as VBUSDET output, which can be tied to a SoC GPIO and used as a VBUS interrupt.
Beagle X15 uses that, in fact, and without it, I could not get USB peripheral working with that board.
Signed-off-by: Felipe Balbi <balbi@ti.com> --- drivers/extcon/extcon-palmas.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c index 93c30a885740..7985d092c069 100644 --- a/drivers/extcon/extcon-palmas.c +++ b/drivers/extcon/extcon-palmas.c @@ -296,10 +296,28 @@ static int palmas_usb_probe(struct platform_device *pdev) } if (palmas_usb->enable_vbus_detection) { + int irq = platform_get_irq(pdev, 0); + + if (irq > 0) { + /* remux GPIO_1 as VBUSDET */ + status = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE, + PALMAS_PRIMARY_SECONDARY_PAD1, + PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK, + (1 << 3)); + if (status < 0) { + dev_err(&pdev->dev, "can't remux GPIO1\n"); + return status; + } + + palmas_usb->vbus_irq = irq; + } else { + irq = regmap_irq_get_virq(palmas->irq_data, + PALMAS_VBUS_IRQ); + palmas_usb->vbus_irq = irq; + } + palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data, PALMAS_VBUS_OTG_IRQ); - palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data, - PALMAS_VBUS_IRQ); status = devm_request_threaded_irq(palmas_usb->dev, palmas_usb->vbus_irq, NULL, palmas_vbus_irq_handler, -- 2.6.2
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