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drivers: kscan: add support for cst816s touch panel driver #41325

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merged 1 commit into from
Mar 1, 2022
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drivers: kscan: add support for cst816s touch panel driver #41325

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3 changes: 3 additions & 0 deletions boards/arm/pinetime_devkit0/Kconfig.defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -21,4 +21,7 @@ config ST7789V

endif # DISPLAY

config I2C
default y if KSCAN

endif # BOARD_PINETIME_DEVKIT0
3 changes: 2 additions & 1 deletion boards/arm/pinetime_devkit0/pinetime_devkit0.dts
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Expand Up @@ -32,6 +32,7 @@
led2 = &blled2; /* backlight high */
led3 = &statusled; /* status led, may be not populated */
sw0 = &key_in; /* key in */
kscan0 = &cst816s;
};

leds {
Expand Down Expand Up @@ -108,7 +109,7 @@

/* Hynitron CST816S Capacitive Touch Controller (400KHz) */
cst816s: cst816s@15 {
compatible = "hynitron-cst816s";
compatible = "hynitron,cst816s";
reg = <0x15>;
label = "CST816S";
irq-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
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2 changes: 2 additions & 0 deletions boards/arm/pinetime_devkit0/pinetime_devkit0.yaml
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Expand Up @@ -8,3 +8,5 @@ toolchain:
- xtools
ram: 64
flash: 512
supported:
- kscan:touch
1 change: 1 addition & 0 deletions drivers/kscan/CMakeLists.txt
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Expand Up @@ -7,5 +7,6 @@ zephyr_library_sources_ifdef(CONFIG_KSCAN_ITE_IT8XXX2 kscan_ite_it8xxx2.c)
zephyr_library_sources_ifdef(CONFIG_KSCAN_XEC kscan_mchp_xec.c)
zephyr_library_sources_ifdef(CONFIG_KSCAN_SDL kscan_sdl.c)
zephyr_library_sources_ifdef(CONFIG_KSCAN_HT16K33 kscan_ht16k33.c)
zephyr_library_sources_ifdef(CONFIG_KSCAN_CST816S kscan_cst816s.c)

zephyr_library_sources_ifdef(CONFIG_USERSPACE kscan_handlers.c)
1 change: 1 addition & 0 deletions drivers/kscan/Kconfig
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Expand Up @@ -15,6 +15,7 @@ source "drivers/kscan/Kconfig.it8xxx2"
source "drivers/kscan/Kconfig.xec"
source "drivers/kscan/Kconfig.sdl"
source "drivers/kscan/Kconfig.ht16k33"
source "drivers/kscan/Kconfig.cst816s"

module = KSCAN
module-str = kscan
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29 changes: 29 additions & 0 deletions drivers/kscan/Kconfig.cst816s
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@@ -0,0 +1,29 @@
# Copyright (c) 2020 Qingsong Gou <gouqs@hotmail.com>
# SPDX-License-Identifier: Apache-2.0

DT_COMPAT_HYNITRON_CST816S := hynitron,cst816s

menuconfig KSCAN_CST816S
bool "CST816S capacitive touch panel driver"
default $(dt_compat_enabled,$(DT_COMPAT_HYNITRON_CST816S))
depends on I2C
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help
Enable driver for hynitron cst816s touch panel.

if KSCAN_CST816S

config KSCAN_CST816S_PERIOD
int "Sample period"
depends on !KSCAN_CST816S_INTERRUPT
default 20
help
Sample period in milliseconds when in polling mode.

config KSCAN_CST816S_INTERRUPT
bool "Enable interrupt support"
default y
depends on GPIO
help
Enable interrupt support (requires GPIO).

endif # KSCAN_CST816S
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