From f92e8f8144243a3651b2e350b706ea2d04931f8c Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 17 Feb 2010 18:45:25 +0000 Subject: mfd: Add WM831x revision B support Revision B of the WM831x devices changes the sense of the tristate bit for GPIO configuration, inverting it to become an enable instead. Take account of this in the gpiolib driver. A current sink regulation status bit has also been added in revision B, add a flag indicating if it's present but don't use it yet. This revision also adds an interrupt on key up for the ON pin event which the existing code is able to take advantage of. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- drivers/mfd/wm831x-core.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/mfd/wm831x-core.c') diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c index 4b2021af1d96..c428d9f918fc 100644 --- a/drivers/mfd/wm831x-core.c +++ b/drivers/mfd/wm831x-core.c @@ -1449,18 +1449,33 @@ static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq) case WM8310: parent = WM8310; wm831x->num_gpio = 16; + if (rev > 0) { + wm831x->has_gpio_ena = 1; + wm831x->has_cs_sts = 1; + } + dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev); break; case WM8311: parent = WM8311; wm831x->num_gpio = 16; + if (rev > 0) { + wm831x->has_gpio_ena = 1; + wm831x->has_cs_sts = 1; + } + dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev); break; case WM8312: parent = WM8312; wm831x->num_gpio = 16; + if (rev > 0) { + wm831x->has_gpio_ena = 1; + wm831x->has_cs_sts = 1; + } + dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev); break; -- cgit v1.2.3