static int alt_fpga_bridge_probe(struct platform_device *pdev)
{
struct altera_hps2fpga_data *priv;
const struct of_device_id *of_id;
struct device *dev = &pdev->dev;
uint32_t init_val;
int rc;
struct clk *clk;
of_id = of_match_device(altera_fpga_of_match, dev);
priv = (struct altera_hps2fpga_data *)of_id->data;
WARN_ON(!priv);
priv->np = dev->of_node;
priv->pdev = pdev;
priv->bridge_reset = devm_reset_control_get(dev, priv->name);
if (IS_ERR(priv->bridge_reset)) {
dev_err(dev, "Could not get %s reset control!\n", priv->name);
return PTR_ERR(priv->bridge_reset);
}
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);
}
clk = of_clk_get(pdev->dev.of_node, 0);
if (IS_ERR(clk)) {
dev_err(dev, "no clock specified\n");
return PTR_ERR(clk);
}
rc = clk_prepare_enable(clk);
if (rc) {
dev_err(dev, "could not enable clock\n");
return -EBUSY;
}
rc = register_fpga_bridge(pdev, &altera_hps2fpga_br_ops,
priv->name, priv);
if (rc)
return rc;
if (of_property_read_u32(priv->np, "init-val", &init_val))
dev_info(&priv->pdev->dev, "init-val not specified\n");
else if (init_val > 1)
dev_warn(&priv->pdev->dev, "invalid init-val %u > 1\n",
init_val);
else {
dev_info(&priv->pdev->dev, "%s bridge\n",
(init_val ? "enabling" : "disabling"));
_alt_hps2fpga_enable_set(priv, init_val);
}
return rc;
}
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);
}
static int alt_hps2fpga_enable_set(struct fpga_bridge *bridge, bool enable)
{
return _alt_hps2fpga_enable_set(bridge->priv, enable);
}
static void alt_hps2fpga_enable_set(struct fpga_bridge *bridge, bool enable)
{
_alt_hps2fpga_enable_set(bridge->priv, enable);
}