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Diffstat (limited to 'drivers/input/touchscreen/ads7846.c')
| -rw-r--r-- | drivers/input/touchscreen/ads7846.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 8b05d8e9754..d187be05955 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -36,6 +36,7 @@ * TSC2046 is just newer ads7846 silicon. * Support for ads7843 tested on Atmel at91sam926x-EK. * Support for ads7845 has only been stubbed in. + * Support for Analog Devices AD7873 and AD7843 tested. * * IRQ handling needs a workaround because of a shortcoming in handling * edge triggered IRQs on some platforms like the OMAP1/2. These @@ -984,6 +985,15 @@ static int __devinit ads7846_probe(struct spi_device *spi) vref = pdata->keep_vref_on; + if (ts->model == 7873) { + /* The AD7873 is almost identical to the ADS7846 + * keep VREF off during differential/ratiometric + * conversion modes + */ + ts->model = 7846; + vref = 0; + } + /* set up the transfers to read touchscreen state; this assumes we * use formula #2 for pressure, not #3. */ |