C++ (Cpp) elm_config Examples

Example #1

File: elm.c Project: CSCLOG/beaglebone

static int __devinit omap_elm_probe(struct platform_device *pdev)
{
	struct resource *res = NULL, *irq = NULL;
	int             ret_status = 0;
	static struct clk *elm_clk;

	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (irq == NULL) {
		ret_status = -EBUSY;
		goto err_resource;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (res == NULL) {
		ret_status = -EBUSY;
		goto err_resource;
	}

	if (!request_mem_region(res->start, resource_size(res),
				dev_name(&pdev->dev))) {
		ret_status = -EBUSY;
		goto err_resource;
	}

	elm_base = ioremap(res->start, resource_size(res));

	if (!elm_base) {
		dev_dbg(&pdev->dev, "can't ioremap ELM\n");
		ret_status = -ENOMEM;
		goto err_remap;
	}

	elm_clk = clk_get(&pdev->dev, "elm_fck");
	if (IS_ERR(elm_clk)) {
		printk(KERN_ERR "Could not get ELM clock %s\n", "elm_fck");
		ret_status = -ENOMEM;
		goto err_clk;
	}

	ret_status = request_irq(irq->start, elm_isr, 0, pdev->name,
			&pdev->dev);

	if (ret_status) {
		printk(KERN_ERR "failure requesting irq %i\n", irq->start);
		goto err_put_clock;
	}

	clk_enable(elm_clk);
	elm_reset();
	elm_config(1);
	init_completion(&elm_completion);
	return ret_status;

err_put_clock:
	clk_put(elm_clk);
err_clk:
	iounmap(elm_base);
err_remap:
	release_mem_region(res->start, resource_size(res));
err_resource:
	return ret_status;
}

Example #2

File: elm.c Project: RhythmEngineering/linux-arago-omap3

static int __devinit omap_elm_probe(struct platform_device *pdev)
{
	struct resource *res = NULL, *irq = NULL;
	int             ret_status = 0;
	static struct clk *elm_clk;
	struct omap_elm_platform_data *platform_data = pdev->dev.platform_data;

	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (irq == NULL) {
		ret_status = -EBUSY;
		goto err_resource;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (res == NULL) {
		ret_status = -EBUSY;
		goto err_resource;
	}

	if (!request_mem_region(res->start, resource_size(res),
				dev_name(&pdev->dev))) {
		ret_status = -EBUSY;
		goto err_resource;
	}

	elm_base = ioremap(res->start, resource_size(res));

	if (!elm_base) {
		dev_dbg(&pdev->dev, "can't ioremap ELM\n");
		ret_status = -ENOMEM;
		goto err_remap;
	}

	elm_clk = clk_get(&pdev->dev, "elm_fck");
	if (IS_ERR(elm_clk)) {
		printk(KERN_ERR "Could not get ELM clock %s\n", "elm_fck");
		ret_status = -ENOMEM;
		goto err_clk;
	}

	ret_status = request_irq(irq->start, elm_isr, 0, pdev->name,
			&pdev->dev);

	if (ret_status) {
		printk(KERN_ERR "failure requesting irq %i\n", irq->start);
		goto err_put_clock;
	}

	clk_enable(elm_clk);
	elm_reset();
	/* configure ELM module for handling various BCHx ECC schemes */
	if (platform_data == NULL) {
		printk(KERN_NOTICE  "%s: Error: missing platform data"
				"cannot initialize ELM", DRIVER_NAME);
		return -EINVAL;
	}

	if (platform_data->ecc_opt == OMAP_ECC_BCH16_CODE_HW)
		elm_config(ECC_TYPE_BCH16);
	else if (platform_data->ecc_opt == OMAP_ECC_BCH8_CODE_HW)
		elm_config(ECC_TYPE_BCH8);
	else
		elm_config(ECC_TYPE_BCH4);

	init_completion(&elm_completion);
	return ret_status;

err_put_clock:
	clk_put(elm_clk);
err_clk:
	iounmap(elm_base);
err_remap:
	release_mem_region(res->start, resource_size(res));
err_resource:
	return ret_status;
}