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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
| commit | aa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece (patch) | |
| tree | 3f9e98fadd5124fb05e8f6f9b06aa23698d4f215 /drivers/input/touchscreen/wm9712.c | |
| parent | cca8edfd2ec2a34d9f50f593bc753bb11e1bc1f5 (diff) | |
| parent | 3c6b50141ef9f0a8844bf1357b80c0cdf518bf05 (diff) | |
Merge branch 'next' into for-linus
Diffstat (limited to 'drivers/input/touchscreen/wm9712.c')
| -rw-r--r-- | drivers/input/touchscreen/wm9712.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/input/touchscreen/wm9712.c b/drivers/input/touchscreen/wm9712.c index 2bc2fb801009..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; @@ -264,13 +265,10 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample) } /* set up digitiser */ - if (adcsel & 0x8000) - adcsel = ((adcsel & 0x7fff) + 3) << 12; - if (wm->mach_ops && wm->mach_ops->pre_sample) wm->mach_ops->pre_sample(adcsel); - wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, - adcsel | WM97XX_POLL | WM97XX_DELAY(delay)); + wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, (adcsel & WM97XX_ADCSEL_MASK) + | WM97XX_POLL | WM97XX_DELAY(delay)); /* wait 3 AC97 time slots + delay for conversion */ poll_delay(delay); @@ -296,13 +294,14 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample) wm->mach_ops->post_sample(adcsel); /* check we have correct sample */ - if ((*sample & WM97XX_ADCSEL_MASK) != adcsel) { - dev_dbg(wm->dev, "adc wrong sample, read %x got %x", adcsel, - *sample & WM97XX_ADCSEL_MASK); + if ((*sample ^ adcsel) & WM97XX_ADCSEL_MASK) { + dev_dbg(wm->dev, "adc wrong sample, wanted %x got %x", + adcsel & WM97XX_ADCSEL_MASK, + *sample & WM97XX_ADCSEL_MASK); return RC_PENUP; } - if (!(*sample & WM97XX_PEN_DOWN)) { + if (wants_pen && !(*sample & WM97XX_PEN_DOWN)) { wm->pen_probably_down = 0; return RC_PENUP; } @@ -387,16 +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; |