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| author | Wolfram Sang <w.sang@pengutronix.de> | 2011-07-05 04:22:01 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-05 04:31:47 +0200 |
| commit | 77da38387e1c6f473744afccd83795805f506498 (patch) | |
| tree | 7f64688e3a44b75aaf418d000444409cacac863b /drivers/input/touchscreen/wm9712.c | |
| parent | Input: wm97xx - refactor channel selection in poll_sample() (diff) | |
| download | linux-77da38387e1c6f473744afccd83795805f506498.tar.xz linux-77da38387e1c6f473744afccd83795805f506498.zip | |
Input: wm97xx - mark channels which need pen_down
Currently, battery drivers also use poll_sample() provided by the
wm97xx-core but this code always checks if the pen is down. Mark the
channels which really need this (i.e. for the touchscreen) with the
PEN_DOWN bit, and skip the checks otherwise. Now, the battery channels
can always be read.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/touchscreen/wm9712.c')
| -rw-r--r-- | drivers/input/touchscreen/wm9712.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/input/touchscreen/wm9712.c b/drivers/input/touchscreen/wm9712.c index d26093f479d1..6e743e3dfda4 100644 --- a/drivers/input/touchscreen/wm9712.c +++ b/drivers/input/touchscreen/wm9712.c @@ -255,8 +255,9 @@ static inline int is_pden(struct wm97xx *wm) static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample) { int timeout = 5 * delay; + bool wants_pen = adcsel & WM97XX_PEN_DOWN; - if (!wm->pen_probably_down) { + if (wants_pen && !wm->pen_probably_down) { u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); if (!(data & WM97XX_PEN_DOWN)) return RC_PENUP; @@ -300,7 +301,7 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample) return RC_PENUP; } - if (!(*sample & WM97XX_PEN_DOWN)) { + if (wants_pen && !(*sample & WM97XX_PEN_DOWN)) { wm->pen_probably_down = 0; return RC_PENUP; } @@ -385,16 +386,18 @@ static int wm9712_poll_touch(struct wm97xx *wm, struct wm97xx_data *data) if (rc != RC_VALID) return rc; } else { - rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_X, &data->x); + rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_X | WM97XX_PEN_DOWN, + &data->x); if (rc != RC_VALID) return rc; - rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_Y, &data->y); + rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_Y | WM97XX_PEN_DOWN, + &data->y); if (rc != RC_VALID) return rc; if (pil && !five_wire) { - rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_PRES, + rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_PRES | WM97XX_PEN_DOWN, &data->p); if (rc != RC_VALID) return rc; |