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Input: wm9713 - support five wire panels

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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Mark Brown 2008-05-27 01:37:26 -04:00 • committed by Dmitry Torokhov
commit 43f83a8f99
2 changed files with 23 additions and 0 deletions
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22
drivers/input/touchscreen/wm9713.c
View file

@ -84,6 +84,15 @@ static int delay = 4;
module_param(delay, int, 0);
MODULE_PARM_DESC(delay, "Set adc sample delay.");
/*
* Set five_wire = 1 to use a 5 wire touchscreen.
*
* NOTE: Five wire mode does not allow for readback of pressure.
*/
static int five_wire;
module_param(five_wire, int, 0);
MODULE_PARM_DESC(five_wire, "Set to '1' to use 5-wire touchscreen.");
/*
* Set adc mask function.
*
@ -162,6 +171,19 @@ static void wm9713_phy_init(struct wm97xx *wm)
64000 / rpu);
}
/* Five wire panel? */
if (five_wire) {
dig3 |= WM9713_45W;
dev_info(wm->dev, "setting 5-wire touchscreen mode.");
if (pil) {
dev_warn(wm->dev,
"Pressure measurement not supported in 5 "
"wire mode, disabling\n");
pil = 0;
}
}
/* touchpanel pressure */
if (pil == 2) {
dig3 |= WM9712_PIL;

1
include/linux/wm97xx.h
View file

@ -100,6 +100,7 @@
#define WM9713_ADCSEL_Y 0x0004 /* Y measurement */
#define WM9713_ADCSEL_PRES 0x0008 /* Pressure measurement */
#define WM9713_COO 0x0001 /* enable coordinate mode */
#define WM9713_45W 0x1000 /* set for 5 wire panel */
#define WM9713_PDEN 0x0800 /* measure only when pen down */
#define WM9713_ADCSEL_MASK 0x00fe /* ADC selection mask */
#define WM9713_WAIT 0x0200 /* coordinate wait */