xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iio: adc: at91_adc: Add support for touchscreens without TSMR

Browse Source 
Old ADCs, as present on the sam9rl and the sam9g45 don't have a TSMR register
and the touchscreen support should be handled differently.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Alexandre Belloni
2014-04-15 12:27:59 +02:00
committed by Nicolas Ferre
parent 2de0c019f3
commit 84882b0603
3 changed files with 177 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/linux/platform_data/at91_adc.h
View File

@@ -7,6 +7,12 @@
#ifndef _AT91_ADC_H_
#define _AT91_ADC_H_
enum atmel_adc_ts_type {
ATMEL_ADC_TOUCHSCREEN_NONE = 0,
ATMEL_ADC_TOUCHSCREEN_4WIRE = 4,
ATMEL_ADC_TOUCHSCREEN_5WIRE = 5,
};
/**
* struct at91_adc_trigger - description of triggers
* @name: name of the trigger advertised to the user
@@ -28,6 +34,7 @@ struct at91_adc_trigger {
* @trigger_number: Number of triggers available in the ADC
* @use_external_triggers: does the board has external triggers availables
* @vref: Reference voltage for the ADC in millivolts
* @touchscreen_type: If a touchscreen is connected, its type (4 or 5 wires)
*/
struct at91_adc_data {
unsigned long channels_used;
@@ -36,6 +43,7 @@ struct at91_adc_data {
u8 trigger_number;
bool use_external_triggers;
u16 vref;
enum atmel_adc_ts_type touchscreen_type;
};
extern void __init at91_add_device_adc(struct at91_adc_data *data);