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test: add a simple test for the adc-keys button driver 

Add adc-keys device to the sandbox/test.dts and connect it to the channel
#3 of the sandbox_adc driver. The default values sampled by sandbox_adc
driver determines that button3 and button4 are released and button5 is
pressed.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Marek Szyprowski 2021-02-18 11:33:18 +01:00 committed by Neil Armstrong
parent a638fba9fc
commit 289d0ead28
3 changed files with 76 additions and 3 deletions
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28
arch/sandbox/dts/test.dts
View File

@ -2,6 +2,7 @@
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/gpio/sandbox-gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/pinctrl/sandbox-pinmux.h>
#include <dt-bindings/mux/mux.h>
@ -69,6 +70,30 @@
};
};
buttons2 {
compatible = "adc-keys";
io-channels = <&adc 3>;
keyup-threshold-microvolt = <3000000>;
button-up {
label = "button3";
linux,code = <KEY_F3>;
press-threshold-microvolt = <1500000>;
};
button-down {
label = "button4";
linux,code = <KEY_F4>;
press-threshold-microvolt = <1000000>;
};
button-enter {
label = "button5";
linux,code = <KEY_F5>;
press-threshold-microvolt = <500000>;
};
};
cros_ec: cros-ec {
reg = <0 0>;
compatible = "google,cros-ec-sandbox";
@ -587,8 +612,9 @@
i2c-eeprom = <&bootcount_i2c>;
};
adc@0 {
adc: adc@0 {
compatible = "sandbox,adc";
#io-channel-cells = <1>;
vdd-supply = <&buck2>;
vss-microvolts = <0>;
};

1
configs/sandbox_defconfig
View File

@ -122,6 +122,7 @@ CONFIG_DM_BOOTCOUNT=y
CONFIG_DM_BOOTCOUNT_RTC=y
CONFIG_DM_BOOTCOUNT_I2C_EEPROM=y
CONFIG_BUTTON=y
CONFIG_BUTTON_ADC=y
CONFIG_BUTTON_GPIO=y
CONFIG_CLK=y
CONFIG_CLK_COMPOSITE_CCF=y

50
test/dm/button.c
View File

@ -7,7 +7,10 @@
#include <common.h>
#include <dm.h>
#include <adc.h>
#include <button.h>
#include <power/regulator.h>
#include <power/sandbox_pmic.h>
#include <asm/gpio.h>
#include <dm/test.h>
#include <test/ut.h>
@ -17,11 +20,20 @@ static int dm_test_button_base(struct unit_test_state *uts)
{
struct udevice *dev;
/* Get the top-level device */
/* Get the top-level gpio buttons device */
ut_assertok(uclass_get_device(UCLASS_BUTTON, 0, &dev));
/* Get the 2 gpio buttons */
ut_assertok(uclass_get_device(UCLASS_BUTTON, 1, &dev));
ut_assertok(uclass_get_device(UCLASS_BUTTON, 2, &dev));
ut_asserteq(-ENODEV, uclass_get_device(UCLASS_BUTTON, 3, &dev));
/* Get the top-level adc buttons device */
ut_assertok(uclass_get_device(UCLASS_BUTTON, 3, &dev));
/* Get the 3 adc buttons */
ut_assertok(uclass_get_device(UCLASS_BUTTON, 4, &dev));
ut_assertok(uclass_get_device(UCLASS_BUTTON, 5, &dev));
ut_assertok(uclass_get_device(UCLASS_BUTTON, 6, &dev));
ut_asserteq(-ENODEV, uclass_get_device(UCLASS_BUTTON, 7, &dev));
return 0;
}
@ -72,3 +84,37 @@ static int dm_test_button_label(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_button_label, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test adc-keys driver */
static int dm_test_button_keys_adc(struct unit_test_state *uts)
{
struct udevice *supply;
struct udevice *dev;
int uV;
ut_assertok(uclass_get_device_by_name(UCLASS_ADC, "adc@0", &dev));
ut_assertok(regulator_get_by_devname(SANDBOX_BUCK2_DEVNAME, &supply));
ut_assertok(regulator_set_value(supply, SANDBOX_BUCK2_SET_UV));
ut_asserteq(SANDBOX_BUCK2_SET_UV, regulator_get_value(supply));
/* Update ADC plat and get new Vdd value */
ut_assertok(adc_vdd_value(dev, &uV));
ut_asserteq(SANDBOX_BUCK2_SET_UV, uV);
/*
* sandbox-adc returns constant value on channel 3, is used by adc-keys:
* SANDBOX_ADC_CHANNEL3_DATA * SANDBOX_BUCK2_SET_UV / SANDBOX_ADC_DATA_MASK =
* 0x3000 * 3300000 / 0xffff = 618759uV
* This means that button3 and button4 are released and button5
* is pressed.
*/
ut_assertok(button_get_by_label("button3", &dev));
ut_asserteq(BUTTON_OFF, button_get_state(dev));
ut_assertok(button_get_by_label("button4", &dev));
ut_asserteq(BUTTON_OFF, button_get_state(dev));
ut_assertok(button_get_by_label("button5", &dev));
ut_asserteq(BUTTON_ON, button_get_state(dev));
return 0;
}
DM_TEST(dm_test_button_keys_adc, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);