test: panel: Add a test for the panel uclass

At present this uclass has no tests. Add a simple one which checks the PWM
configuration, regulator and GPIO.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2018-10-01 12:22:40 -06:00
parent d07b6e145e
commit 5d9a88f44a
6 changed files with 111 additions and 2 deletions

View File

@ -60,7 +60,7 @@
regulator-max-microvolt = <3300000>;
};
ldo1 {
ldo_1: ldo1 {
regulator-name = "VDD_EMMC_1.8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;

View File

@ -11,6 +11,8 @@
eth0 = "/eth@10002000";
eth3 = &eth_3;
eth5 = &eth_5;
gpio1 = &gpio_a;
gpio2 = &gpio_b;
i2c0 = "/i2c@0";
mmc0 = "/mmc0";
mmc1 = "/mmc1";
@ -91,6 +93,15 @@
reg = <2 1>;
};
backlight: backlight {
compatible = "pwm-backlight";
enable-gpios = <&gpio_a 1>;
power-supply = <&ldo_1>;
pwms = <&pwm 0 1000>;
default-brightness-level = <5>;
brightness-levels = <0 16 32 64 128 170 202 234 255>;
};
bind-test {
bind-test-child1 {
compatible = "sandbox,phy";
@ -441,12 +452,14 @@
power-domains = <&pwrdom 2>;
};
pwm {
pwm: pwm {
compatible = "sandbox,pwm";
#pwm-cells = <2>;
};
pwm2 {
compatible = "sandbox,pwm";
#pwm-cells = <2>;
};
ram {
@ -483,6 +496,11 @@
remoteproc-name = "remoteproc-test-dev2";
};
panel {
compatible = "simple-panel";
backlight = <&backlight 0 100>;
};
smem@0 {
compatible = "sandbox,smem";
};

View File

@ -98,4 +98,19 @@ int sandbox_usb_keyb_add_string(struct udevice *dev, const char *str);
* @buflen: length of buffer in bytes
*/
int sandbox_osd_get_mem(struct udevice *dev, u8 *buf, size_t buflen);
/**
* sandbox_pwm_get_config() - get the PWM config for a channel
*
* @dev: Device to check
* @channel: Channel number to check
* @period_ns: Period of the PWM in nanoseconds
* @duty_ns: Current duty cycle of the PWM in nanoseconds
* @enable: true if the PWM is enabled
* @polarity: true if the PWM polarity is active high
* @return 0 if OK, -ENOSPC if the PWM number is invalid
*/
int sandbox_pwm_get_config(struct udevice *dev, uint channel, uint *period_nsp,
uint *duty_nsp, bool *enablep, bool *polarityp);
#endif

View File

@ -14,6 +14,14 @@ enum {
NUM_CHANNELS = 3,
};
/**
* struct sandbox_pwm_chan - a sandbox PWM channel
*
* @period_ns: Period of the PWM in nanoseconds
* @duty_ns: Current duty cycle of the PWM in nanoseconds
* @enable: true if the PWM is enabled
* @polarity: true if the PWM polarity is active high
*/
struct sandbox_pwm_chan {
uint period_ns;
uint duty_ns;
@ -25,6 +33,23 @@ struct sandbox_pwm_priv {
struct sandbox_pwm_chan chan[NUM_CHANNELS];
};
int sandbox_pwm_get_config(struct udevice *dev, uint channel, uint *period_nsp,
uint *duty_nsp, bool *enablep, bool *polarityp)
{
struct sandbox_pwm_priv *priv = dev_get_priv(dev);
struct sandbox_pwm_chan *chan;
if (channel >= NUM_CHANNELS)
return -ENOSPC;
chan = &priv->chan[channel];
*period_nsp = chan->period_ns;
*duty_nsp = chan->duty_ns;
*enablep = chan->enable;
*polarityp = chan->polarity;
return 0;
}
static int sandbox_pwm_set_config(struct udevice *dev, uint channel,
uint period_ns, uint duty_ns)
{

View File

@ -25,6 +25,7 @@ obj-$(CONFIG_DM_MAILBOX) += mailbox.o
obj-$(CONFIG_DM_MMC) += mmc.o
obj-y += ofnode.o
obj-$(CONFIG_OSD) += osd.o
obj-$(CONFIG_DM_VIDEO) += panel.o
obj-$(CONFIG_DM_PCI) += pci.o
obj-$(CONFIG_PHY) += phy.o
obj-$(CONFIG_POWER_DOMAIN) += power-domain.o

50
test/dm/panel.c Normal file
View File

@ -0,0 +1,50 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Test for panel uclass
*
* Copyright (c) 2018 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <backlight.h>
#include <dm.h>
#include <panel.h>
#include <video.h>
#include <asm/gpio.h>
#include <asm/test.h>
#include <dm/test.h>
#include <test/ut.h>
#include <power/regulator.h>
/* Basic test of the panel uclass */
static int dm_test_panel(struct unit_test_state *uts)
{
struct udevice *dev, *pwm, *gpio, *reg;
uint period_ns;
uint duty_ns;
bool enable;
bool polarity;
ut_assertok(uclass_first_device_err(UCLASS_PANEL, &dev));
ut_assertok(uclass_first_device_err(UCLASS_PWM, &pwm));
ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", &reg));
ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
&enable, &polarity));
ut_asserteq(false, enable);
ut_asserteq(false, regulator_get_enable(reg));
ut_assertok(panel_enable_backlight(dev));
ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
&enable, &polarity));
ut_asserteq(1000, period_ns);
ut_asserteq(170 * 1000 / 256, duty_ns);
ut_asserteq(true, enable);
ut_asserteq(false, polarity);
ut_asserteq(1, sandbox_gpio_get_value(gpio, 1));
ut_asserteq(true, regulator_get_enable(reg));
return 0;
}
DM_TEST(dm_test_panel, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);