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drm/bridge: tc358775: Convert to drm_of_get_data_lanes_count_ep

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Convert driver to use this new helper to standardize
OF "data-lanes" parsing.

Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
To: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20220524010522.528569-7-marex@denx.de
This commit is contained in:
Marek Vasut 2022-05-24 03:05:18 +02:00
parent d8609fd1e0
commit 56426faa14
1 changed files with 5 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
drivers/gpu/drm/bridge/tc358775.c
View file

@ -529,8 +529,7 @@ static int tc358775_parse_dt(struct device_node *np, struct tc_data *tc)
struct device_node *endpoint; struct device_node *endpoint;
struct device_node *parent; struct device_node *parent;
struct device_node *remote; struct device_node *remote;
struct property *prop; int dsi_lanes;
int len = 0;
/* /*
* To get the data-lanes of dsi, we need to access the dsi0_out of port1 * To get the data-lanes of dsi, we need to access the dsi0_out of port1
@ -544,25 +543,15 @@ static int tc358775_parse_dt(struct device_node *np, struct tc_data *tc)
of_node_put(endpoint); of_node_put(endpoint);
if (parent) { if (parent) {
/* dsi0 port 1 */ /* dsi0 port 1 */
endpoint = of_graph_get_endpoint_by_regs(parent, 1, -1); dsi_lanes = drm_of_get_data_lanes_count_ep(parent, 1, -1, 1, 4);
of_node_put(parent); of_node_put(parent);
if (endpoint) {
prop = of_find_property(endpoint, "data-lanes",
&len);
of_node_put(endpoint);
if (!prop) {
dev_err(tc->dev,
"failed to find data lane\n");
return -EPROBE_DEFER;
}
}
} }
} }
tc->num_dsi_lanes = len / sizeof(u32); if (dsi_lanes < 0)
return dsi_lanes;
if (tc->num_dsi_lanes < 1 || tc->num_dsi_lanes > 4) tc->num_dsi_lanes = dsi_lanes;
return -EINVAL;
tc->host_node = of_graph_get_remote_node(np, 0, 0); tc->host_node = of_graph_get_remote_node(np, 0, 0);
if (!tc->host_node) if (!tc->host_node)