drm/exynos/dsi: use of_graph_get_endpoint_by_regs helper
This allows to remove the local of_graph_get_port_by_reg(), of_graph_get_endpoint_by_reg(), and of_get_child_by_name_reg() functions. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Inki Dae <inki.dae@samsung.com>
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@ -1632,50 +1632,6 @@ static const struct drm_encoder_funcs exynos_dsi_encoder_funcs = {
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MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
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MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
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/* of_* functions will be removed after merge of of_graph patches */
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static struct device_node *
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of_get_child_by_name_reg(struct device_node *parent, const char *name, u32 reg)
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{
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struct device_node *np;
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for_each_child_of_node(parent, np) {
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u32 r;
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if (!np->name || of_node_cmp(np->name, name))
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continue;
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if (of_property_read_u32(np, "reg", &r) < 0)
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r = 0;
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if (reg == r)
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break;
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}
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return np;
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}
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static struct device_node *of_graph_get_port_by_reg(struct device_node *parent,
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u32 reg)
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{
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struct device_node *ports, *port;
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ports = of_get_child_by_name(parent, "ports");
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if (ports)
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parent = ports;
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port = of_get_child_by_name_reg(parent, "port", reg);
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of_node_put(ports);
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return port;
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}
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static struct device_node *
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of_graph_get_endpoint_by_reg(struct device_node *port, u32 reg)
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{
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return of_get_child_by_name_reg(port, "endpoint", reg);
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}
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static int exynos_dsi_of_read_u32(const struct device_node *np,
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static int exynos_dsi_of_read_u32(const struct device_node *np,
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const char *propname, u32 *out_value)
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const char *propname, u32 *out_value)
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{
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{
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@ -1697,7 +1653,7 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
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{
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{
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struct device *dev = dsi->dev;
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struct device *dev = dsi->dev;
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struct device_node *node = dev->of_node;
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struct device_node *node = dev->of_node;
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struct device_node *port, *ep;
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struct device_node *ep;
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int ret;
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int ret;
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ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency",
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ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency",
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@ -1705,16 +1661,9 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
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if (ret < 0)
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if (ret < 0)
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return ret;
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return ret;
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port = of_graph_get_port_by_reg(node, DSI_PORT_OUT);
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ep = of_graph_get_endpoint_by_regs(node, DSI_PORT_OUT, 0);
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if (!port) {
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dev_err(dev, "no output port specified\n");
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return -EINVAL;
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}
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ep = of_graph_get_endpoint_by_reg(port, 0);
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of_node_put(port);
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if (!ep) {
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if (!ep) {
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dev_err(dev, "no endpoint specified in output port\n");
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dev_err(dev, "no output port with endpoint specified\n");
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return -EINVAL;
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return -EINVAL;
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}
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}
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