コード例 #1
0
ファイル: altera-hps2fpga.c プロジェクト: AshishNamdev/linux
static int alt_fpga_bridge_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct altera_hps2fpga_data *priv;
	const struct of_device_id *of_id;
	u32 enable;
	int ret;

	of_id = of_match_device(altera_fpga_of_match, dev);
	priv = (struct altera_hps2fpga_data *)of_id->data;

	priv->bridge_reset = of_reset_control_get_by_index(dev->of_node, 0);
	if (IS_ERR(priv->bridge_reset)) {
		dev_err(dev, "Could not get %s reset control\n", priv->name);
		return PTR_ERR(priv->bridge_reset);
	}

	if (priv->remap_mask) {
		priv->l3reg = syscon_regmap_lookup_by_compatible("altr,l3regs");
		if (IS_ERR(priv->l3reg)) {
			dev_err(dev, "regmap for altr,l3regs lookup failed\n");
			return PTR_ERR(priv->l3reg);
		}
	}

	priv->clk = devm_clk_get(dev, NULL);
	if (IS_ERR(priv->clk)) {
		dev_err(dev, "no clock specified\n");
		return PTR_ERR(priv->clk);
	}

	ret = clk_prepare_enable(priv->clk);
	if (ret) {
		dev_err(dev, "could not enable clock\n");
		return -EBUSY;
	}

	spin_lock_init(&l3_remap_lock);

	if (!of_property_read_u32(dev->of_node, "bridge-enable", &enable)) {
		if (enable > 1) {
			dev_warn(dev, "invalid bridge-enable %u > 1\n", enable);
		} else {
			dev_info(dev, "%s bridge\n",
				 (enable ? "enabling" : "disabling"));

			ret = _alt_hps2fpga_enable_set(priv, enable);
			if (ret) {
				fpga_bridge_unregister(&pdev->dev);
				return ret;
			}
		}
	}

	return fpga_bridge_register(dev, priv->name, &altera_hps2fpga_br_ops,
				    priv);
}
コード例 #2
0
ファイル: altera-hps2fpga.c プロジェクト: AshishNamdev/linux
static int alt_fpga_bridge_remove(struct platform_device *pdev)
{
	struct fpga_bridge *bridge = platform_get_drvdata(pdev);
	struct altera_hps2fpga_data *priv = bridge->priv;

	fpga_bridge_unregister(&pdev->dev);

	clk_disable_unprepare(priv->clk);

	return 0;
}
コード例 #3
0
ファイル: dfl-fme-br.c プロジェクト: AlexShiLucky/linux
static int fme_br_remove(struct platform_device *pdev)
{
	struct fpga_bridge *br = platform_get_drvdata(pdev);
	struct fme_br_priv *priv = br->priv;

	fpga_bridge_unregister(br);

	if (priv->port_pdev)
		put_device(&priv->port_pdev->dev);
	if (priv->port_ops)
		dfl_fpga_port_ops_put(priv->port_ops);

	return 0;
}