[PATCH 4/4] input: mc13xxx_ts: intersperse delays between ts samples
flat view
STALE5379d
From: Marc Reilly <hidden>
Date: 2012-01-29 22:51:04
Also in:
linux-input
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
The mc13xxx ICs have the ability to add a small delay in between each sample taken in a set of TS samples. This allows time for the ts to be biased correctly, and improved accuracy of raw readings. Signed-off-by: Marc Reilly <redacted> --- drivers/input/touchscreen/mc13xxx_ts.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/mc13xxx_ts.c b/drivers/input/touchscreen/mc13xxx_ts.c
index 8924d66..f46e49d 100644
--- a/drivers/input/touchscreen/mc13xxx_ts.c
+++ b/drivers/input/touchscreen/mc13xxx_ts.c@@ -197,9 +197,13 @@ static void mc13xxx_ts_work(struct work_struct *work) container_of(work, struct mc13xxx_ts_priv, work.work); unsigned int mode = MC13XXX_ADC_MODE_TS; unsigned int channel = 12; + u32 adc1_mask = MC13XXX_ADC1_ATOX | MC13XXX_ADC1_ATO_MASK; + u32 adc1_val = MC13XXX_ADC1_ATOX | (3 << MC13XXX_ADC1_ATO_SHIFT); - if (mc13xxx_adc_do_conversion(priv->mc13xxx, - mode, channel, priv->sample) == 0) { + if (mc13xxx_adc_do_conversion_ex(priv->mc13xxx, + mode, channel, priv->sample, + 0, 0, + adc1_mask, adc1_val) == 0) { mc13xxx_ts_report_sample(priv); } else { dev_warn(&priv->idev->dev, "bad conversion");
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1.7.3.4