/* 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", ®)); 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)); ut_assertok(panel_set_backlight(dev, 40)); ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns, &enable, &polarity)); ut_asserteq(64 * 1000 / 256, duty_ns); ut_assertok(panel_set_backlight(dev, BACKLIGHT_MAX)); ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns, &enable, &polarity)); ut_asserteq(255 * 1000 / 256, duty_ns); ut_assertok(panel_set_backlight(dev, BACKLIGHT_MIN)); ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns, &enable, &polarity)); ut_asserteq(0 * 1000 / 256, duty_ns); ut_asserteq(1, sandbox_gpio_get_value(gpio, 1)); ut_assertok(panel_set_backlight(dev, BACKLIGHT_DEFAULT)); ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns, &enable, &polarity)); ut_asserteq(true, enable); ut_asserteq(170 * 1000 / 256, duty_ns); ut_assertok(panel_set_backlight(dev, BACKLIGHT_OFF)); ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns, &enable, &polarity)); ut_asserteq(0 * 1000 / 256, duty_ns); ut_asserteq(0, sandbox_gpio_get_value(gpio, 1)); ut_asserteq(false, regulator_get_enable(reg)); return 0; }
void board_lcd_enable(void) { int rc = -1; dev = qup_i2c_init(GSBI_ID_8, 100000, 24000000); /* Make sure dev is created and initialized properly */ if (!dev) { while (1) ; return; } /* Store current value of these registers as to not destroy their previous state. */ uint8_t open_drain_a = expander_read(GPIO_EXPANDER_REG_OPEN_DRAIN_A); uint8_t dir_b = expander_read(GPIO_EXPANDER_REG_DIR_B); uint8_t dir_a = expander_read(GPIO_EXPANDER_REG_DIR_A); uint8_t data_b = expander_read(GPIO_EXPANDER_REG_DATA_B); uint8_t data_a = expander_read(GPIO_EXPANDER_REG_DATA_A); /* Set the LVDS_SHUTDOWN_N to open drain and output low. */ dprintf(INFO, "Enable lvds_shutdown_n line for Open Drain.\n"); expander_write(GPIO_EXPANDER_REG_OPEN_DRAIN_A, 0x04 | open_drain_a); dprintf(INFO, "Enable lvds_shutdown_n line for output.\n"); expander_write(GPIO_EXPANDER_REG_DIR_A, ~0x04 & dir_a); dprintf(INFO, "Drive the LVDS_SHUTDOWN_N pin high here.\n"); expander_write(GPIO_EXPANDER_REG_DATA_A, 0x04 | data_a); /* Turn on the VREG_L2B to 3.3V. */ /* Power on the appropiate PMIC LDO power rails */ if (lcd_power_on()) return; /* Enable the GPIO as LCDC mode LCD. */ lcd_gpio_cfg(1); /* Arbitrary delay */ udelay(20000); /* Set the GPIOs needed for backlight */ bl_gpio_init(); /* Set backlight level with API (to 8 by default) */ rc = panel_set_backlight(8); if(rc) dprintf(CRITICAL,"Error in setting panel backlight\n"); dprintf(INFO, "Enable BACKLIGHT_EN line for output.\n"); expander_write(GPIO_EXPANDER_REG_DIR_B, ~0x10 & dir_b); dprintf(INFO, "Drive BACKLIGHT_EN to high\n"); expander_write(GPIO_EXPANDER_REG_DATA_B, 0x10 | data_b); }