C++ (Cpp) rt_timer_enable Exemples

Exemple #1

static void rt_timer_trig_activate(struct led_classdev *led_cdev)
{
	struct rt_timer *rt = container_of(led_cdev->trigger, struct rt_timer, led_trigger);
	struct rt_timer_gpio *gpio_data;
	int rc;

	led_cdev->trigger_data = NULL;
	gpio_data = kzalloc(sizeof(*gpio_data), GFP_KERNEL);
	if (!gpio_data)
		return;

	rc = device_create_file(led_cdev->dev, &dev_attr_duty_cycle);
	if (rc)
		goto err_gpio;
	rc = device_create_file(led_cdev->dev, &dev_attr_fade);
	if (rc)
		goto err_out_duty_cycle;

	led_cdev->activated = true;
	led_cdev->trigger_data = gpio_data;
	gpio_data->led = led_cdev;
	list_add(&gpio_data->list, &rt->gpios);
	led_cdev->trigger_data = gpio_data;
	rt_timer_enable(rt);
	return;

err_out_duty_cycle:
	device_remove_file(led_cdev->dev, &dev_attr_duty_cycle);

err_gpio:
	kfree(gpio_data);
}

Exemple #2

Fichier : timer.c Projet : 1800alex/linux

static int rt_timer_probe(struct platform_device *pdev)
{
	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	struct rt_timer *rt;
	struct clk *clk;

	rt = devm_kzalloc(&pdev->dev, sizeof(*rt), GFP_KERNEL);
	if (!rt) {
		dev_err(&pdev->dev, "failed to allocate memory\n");
		return -ENOMEM;
	}

	rt->irq = platform_get_irq(pdev, 0);
	if (!rt->irq) {
		dev_err(&pdev->dev, "failed to load irq\n");
		return -ENOENT;
	}

	rt->membase = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(rt->membase))
		return PTR_ERR(rt->membase);

	clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(clk)) {
		dev_err(&pdev->dev, "failed get clock rate\n");
		return PTR_ERR(clk);
	}

	rt->timer_freq = clk_get_rate(clk) / TMR0CTL_PRESCALE_DIV;
	if (!rt->timer_freq)
		return -EINVAL;

	rt->dev = &pdev->dev;
	platform_set_drvdata(pdev, rt);

	rt_timer_request(rt);
	rt_timer_config(rt, 2);
	rt_timer_enable(rt);

	dev_info(&pdev->dev, "maximum frequency is %luHz\n", rt->timer_freq);

	return 0;
}