A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 19:21:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

mfd: Add WM831x revision B support

Browse source 
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 <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
This commit is contained in:
Mark Brown 2010-02-17 18:45:25 +00:00 • committed by Samuel Ortiz
commit f92e8f8144
4 changed files with 39 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

21
drivers/gpio/wm831x-gpio.c
View file

@ -38,10 +38,13 @@ static int wm831x_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
{
struct wm831x_gpio *wm831x_gpio = to_wm831x_gpio(chip);
struct wm831x *wm831x = wm831x_gpio->wm831x;
int val = WM831X_GPN_DIR;
if (wm831x->has_gpio_ena)
val |= WM831X_GPN_TRI;
return wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + offset,
WM831X_GPN_DIR | WM831X_GPN_TRI,
WM831X_GPN_DIR);
WM831X_GPN_DIR | WM831X_GPN_TRI, val);
}
static int wm831x_gpio_get(struct gpio_chip *chip, unsigned offset)
@ -74,10 +77,14 @@ static int wm831x_gpio_direction_out(struct gpio_chip *chip,
{
struct wm831x_gpio *wm831x_gpio = to_wm831x_gpio(chip);
struct wm831x *wm831x = wm831x_gpio->wm831x;
int val = 0;
int ret;
if (wm831x->has_gpio_ena)
val |= WM831X_GPN_TRI;
ret = wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + offset,
WM831X_GPN_DIR | WM831X_GPN_TRI, 0);
WM831X_GPN_DIR | WM831X_GPN_TRI, val);
if (ret < 0)
return ret;
@ -103,7 +110,7 @@ static void wm831x_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
{
struct wm831x_gpio *wm831x_gpio = to_wm831x_gpio(chip);
struct wm831x *wm831x = wm831x_gpio->wm831x;
int i;
int i, tristated;
for (i = 0; i < chip->ngpio; i++) {
int gpio = i + chip->base;
@ -170,6 +177,10 @@ static void wm831x_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
break;
}
tristated = reg & WM831X_GPN_TRI;
if (wm831x->has_gpio_ena)
tristated = !tristated;
seq_printf(s, " %s %s %s %s%s\n"
" %s%s (0x%4x)\n",
reg & WM831X_GPN_DIR ? "in" : "out",
@ -178,7 +189,7 @@ static void wm831x_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
powerdomain,
reg & WM831X_GPN_POL ? "" : " inverted",
reg & WM831X_GPN_OD ? "open-drain" : "CMOS",
reg & WM831X_GPN_TRI ? " tristated" : "",
tristated ? " tristated" : "",
reg);
}
}