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mfd: Add WM831x revision B support

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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 <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown
2010-02-17 18:45:25 +00:00
committed by Samuel Ortiz
parent 6b8274fafe
commit f92e8f8144
4 changed files with 39 additions and 5 deletions
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15
drivers/mfd/wm831x-core.c
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@@ -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;