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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/linux/spi/ad7877.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/linux/spi/ad7877.h')
-rw-r--r-- | include/linux/spi/ad7877.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/spi/ad7877.h b/include/linux/spi/ad7877.h new file mode 100644 index 000000000..b7be843c8 --- /dev/null +++ b/include/linux/spi/ad7877.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* linux/spi/ad7877.h */ + +/* Touchscreen characteristics vary between boards and models. The + * platform_data for the device's "struct device" holds this information. + * + * It's OK if the min/max values are zero. + */ +struct ad7877_platform_data { + u16 model; /* 7877 */ + u16 vref_delay_usecs; /* 0 for external vref; etc */ + u16 x_plate_ohms; + u16 y_plate_ohms; + + u16 x_min, x_max; + u16 y_min, y_max; + u16 pressure_min, pressure_max; + + u8 stopacq_polarity; /* 1 = Active HIGH, 0 = Active LOW */ + u8 first_conversion_delay; /* 0 = 0.5us, 1 = 128us, 2 = 1ms, 3 = 8ms */ + u8 acquisition_time; /* 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */ + u8 averaging; /* 0 = 1, 1 = 4, 2 = 8, 3 = 16 */ + u8 pen_down_acc_interval; /* 0 = covert once, 1 = every 0.5 ms, + 2 = ever 1 ms, 3 = every 8 ms,*/ +}; |