[PATCH 5/5] drm: omap: use common OF graph helpers
Rob Herring
robh at kernel.org
Sat Feb 4 03:36:35 UTC 2017
The OMAP driver has its own OF graph helpers that are similar to the
common helpers. This commit replaces most of the calls with the common
helpers. There's still a couple of custom helpers left, but the driver
needs more extensive changes to get rid of them.
In dss_init_ports, we invert the loop, looping through the known ports
and matching them to DT nodes rather than looping thru DT nodes and
matching them to the ports.
Signed-off-by: Rob Herring <robh at kernel.org>
---
drivers/gpu/drm/omapdrm/dss/dpi.c | 2 +-
drivers/gpu/drm/omapdrm/dss/dsi.c | 2 +-
drivers/gpu/drm/omapdrm/dss/dss-of.c | 102 +---------------------------------
drivers/gpu/drm/omapdrm/dss/dss.c | 61 +++++---------------
drivers/gpu/drm/omapdrm/dss/hdmi4.c | 3 +-
drivers/gpu/drm/omapdrm/dss/hdmi5.c | 2 +-
drivers/gpu/drm/omapdrm/dss/omapdss.h | 11 ----
drivers/gpu/drm/omapdrm/dss/venc.c | 3 +-
8 files changed, 23 insertions(+), 163 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
index e75162d26ac0..e5bb494d4689 100644
--- a/drivers/gpu/drm/omapdrm/dss/dpi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
@@ -855,7 +855,7 @@ int dpi_init_port(struct platform_device *pdev, struct device_node *port)
if (!dpi)
return -ENOMEM;
- ep = omapdss_of_get_next_endpoint(port, NULL);
+ ep = of_get_next_child(port, NULL);
if (!ep)
return 0;
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index f060bda31235..a9235b9fdaaf 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -5091,7 +5091,7 @@ static int dsi_probe_of(struct platform_device *pdev)
struct device_node *ep;
struct omap_dsi_pin_config pin_cfg;
- ep = omapdss_of_get_first_endpoint(node);
+ ep = of_graph_get_endpoint_by_regs(node, 0, 0);
if (!ep)
return 0;
diff --git a/drivers/gpu/drm/omapdrm/dss/dss-of.c b/drivers/gpu/drm/omapdrm/dss/dss-of.c
index dfd4e9621e3b..eb520ab45ddd 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss-of.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss-of.c
@@ -16,77 +16,12 @@
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_graph.h>
#include <linux/seq_file.h>
#include "omapdss.h"
#include "dss.h"
-struct device_node *
-omapdss_of_get_next_port(const struct device_node *parent,
- struct device_node *prev)
-{
- struct device_node *port = NULL;
-
- if (!parent)
- return NULL;
-
- if (!prev) {
- struct device_node *ports;
- /*
- * It's the first call, we have to find a port subnode
- * within this node or within an optional 'ports' node.
- */
- ports = of_get_child_by_name(parent, "ports");
- if (ports)
- parent = ports;
-
- port = of_get_child_by_name(parent, "port");
-
- /* release the 'ports' node */
- of_node_put(ports);
- } else {
- struct device_node *ports;
-
- ports = of_get_parent(prev);
- if (!ports)
- return NULL;
-
- do {
- port = of_get_next_child(ports, prev);
- if (!port) {
- of_node_put(ports);
- return NULL;
- }
- prev = port;
- } while (of_node_cmp(port->name, "port") != 0);
-
- of_node_put(ports);
- }
-
- return port;
-}
-EXPORT_SYMBOL_GPL(omapdss_of_get_next_port);
-
-struct device_node *
-omapdss_of_get_next_endpoint(const struct device_node *parent,
- struct device_node *prev)
-{
- struct device_node *ep = NULL;
-
- if (!parent)
- return NULL;
-
- do {
- ep = of_get_next_child(parent, prev);
- if (!ep)
- return NULL;
- prev = ep;
- } while (of_node_cmp(ep->name, "endpoint") != 0);
-
- return ep;
-}
-EXPORT_SYMBOL_GPL(omapdss_of_get_next_endpoint);
-
struct device_node *dss_of_port_get_parent_device(struct device_node *port)
{
struct device_node *np;
@@ -123,37 +58,6 @@ u32 dss_of_port_get_port_number(struct device_node *port)
return reg;
}
-static struct device_node *omapdss_of_get_remote_port(const struct device_node *node)
-{
- struct device_node *np;
-
- np = of_parse_phandle(node, "remote-endpoint", 0);
- if (!np)
- return NULL;
-
- np = of_get_next_parent(np);
-
- return np;
-}
-
-struct device_node *
-omapdss_of_get_first_endpoint(const struct device_node *parent)
-{
- struct device_node *port, *ep;
-
- port = omapdss_of_get_next_port(parent, NULL);
-
- if (!port)
- return NULL;
-
- ep = omapdss_of_get_next_endpoint(port, NULL);
-
- of_node_put(port);
-
- return ep;
-}
-EXPORT_SYMBOL_GPL(omapdss_of_get_first_endpoint);
-
struct omap_dss_device *
omapdss_of_find_source_for_first_ep(struct device_node *node)
{
@@ -161,11 +65,11 @@ omapdss_of_find_source_for_first_ep(struct device_node *node)
struct device_node *src_port;
struct omap_dss_device *src;
- ep = omapdss_of_get_first_endpoint(node);
+ ep = of_graph_get_endpoint_by_regs(node, 0, 0);
if (!ep)
return ERR_PTR(-EINVAL);
- src_port = omapdss_of_get_remote_port(ep);
+ src_port = of_graph_get_remote_port(ep);
if (!src_port) {
of_node_put(ep);
return ERR_PTR(-EINVAL);
diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
index 14887d5b02e5..2734c401d9fa 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss.c
@@ -38,6 +38,7 @@
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <linux/of.h>
+#include <linux/of_graph.h>
#include <linux/regulator/consumer.h>
#include <linux/suspend.h>
#include <linux/component.h>
@@ -1043,32 +1044,14 @@ static int dss_init_ports(struct platform_device *pdev)
{
struct device_node *parent = pdev->dev.of_node;
struct device_node *port;
- int r;
-
- if (parent == NULL)
- return 0;
+ int i;
- port = omapdss_of_get_next_port(parent, NULL);
- if (!port)
- return 0;
-
- if (dss.feat->num_ports == 0)
- return 0;
-
- do {
- enum omap_display_type port_type;
- u32 reg;
-
- r = of_property_read_u32(port, "reg", ®);
- if (r)
- reg = 0;
-
- if (reg >= dss.feat->num_ports)
+ for (i = 0; i < dss.feat->num_ports; i++) {
+ port = of_graph_get_port_by_id(parent, i);
+ if (!port)
continue;
- port_type = dss.feat->ports[reg];
-
- switch (port_type) {
+ switch (dss.feat->ports[i]) {
case OMAP_DISPLAY_TYPE_DPI:
dpi_init_port(pdev, port);
break;
@@ -1078,7 +1061,7 @@ static int dss_init_ports(struct platform_device *pdev)
default:
break;
}
- } while ((port = omapdss_of_get_next_port(parent, port)) != NULL);
+ }
return 0;
}
@@ -1087,32 +1070,14 @@ static void dss_uninit_ports(struct platform_device *pdev)
{
struct device_node *parent = pdev->dev.of_node;
struct device_node *port;
+ int i;
- if (parent == NULL)
- return;
-
- port = omapdss_of_get_next_port(parent, NULL);
- if (!port)
- return;
-
- if (dss.feat->num_ports == 0)
- return;
-
- do {
- enum omap_display_type port_type;
- u32 reg;
- int r;
-
- r = of_property_read_u32(port, "reg", ®);
- if (r)
- reg = 0;
-
- if (reg >= dss.feat->num_ports)
+ for (i = 0; i < dss.feat->num_ports; i++) {
+ port = of_graph_get_port_by_id(parent, i);
+ if (!port)
continue;
- port_type = dss.feat->ports[reg];
-
- switch (port_type) {
+ switch (dss.feat->ports[i]) {
case OMAP_DISPLAY_TYPE_DPI:
dpi_uninit_port(port);
break;
@@ -1122,7 +1087,7 @@ static void dss_uninit_ports(struct platform_device *pdev)
default:
break;
}
- } while ((port = omapdss_of_get_next_port(parent, port)) != NULL);
+ }
}
static int dss_video_pll_probe(struct platform_device *pdev)
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
index e7162c16de2e..87c53034c634 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -34,6 +34,7 @@
#include <linux/regulator/consumer.h>
#include <linux/component.h>
#include <linux/of.h>
+#include <linux/of_graph.h>
#include <sound/omap-hdmi-audio.h>
#include "omapdss.h"
@@ -546,7 +547,7 @@ static int hdmi_probe_of(struct platform_device *pdev)
struct device_node *ep;
int r;
- ep = omapdss_of_get_first_endpoint(node);
+ ep = of_graph_get_endpoint_by_regs(node, 0, 0);
if (!ep)
return 0;
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
index 678dfb02764a..1d14a4ac9902 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
@@ -572,7 +572,7 @@ static int hdmi_probe_of(struct platform_device *pdev)
struct device_node *ep;
int r;
- ep = omapdss_of_get_first_endpoint(node);
+ ep = of_graph_get_endpoint_by_regs(node, 0, 0);
if (!ep)
return 0;
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index b420dde8c0fb..acf4e520baaf 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -830,17 +830,6 @@ static inline bool omapdss_device_is_enabled(struct omap_dss_device *dssdev)
return dssdev->state == OMAP_DSS_DISPLAY_ACTIVE;
}
-struct device_node *
-omapdss_of_get_next_port(const struct device_node *parent,
- struct device_node *prev);
-
-struct device_node *
-omapdss_of_get_next_endpoint(const struct device_node *parent,
- struct device_node *prev);
-
-struct device_node *
-omapdss_of_get_first_endpoint(const struct device_node *parent);
-
struct omap_dss_device *
omapdss_of_find_source_for_first_ep(struct device_node *node);
diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c
index d74f7fcc2e46..19d14957f566 100644
--- a/drivers/gpu/drm/omapdrm/dss/venc.c
+++ b/drivers/gpu/drm/omapdrm/dss/venc.c
@@ -35,6 +35,7 @@
#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
+#include <linux/of_graph.h>
#include <linux/component.h>
#include "omapdss.h"
@@ -818,7 +819,7 @@ static int venc_probe_of(struct platform_device *pdev)
u32 channels;
int r;
- ep = omapdss_of_get_first_endpoint(node);
+ ep = of_graph_get_endpoint_by_regs(node, 0, 0);
if (!ep)
return 0;
--
2.10.1
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