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drivers: core: ofnode: Add panel timing decode.

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ofnode_decode_display_timing supports reading timing parameters from
subnode of display-timings node, for displays supporting multiple
resolution, in case if a display supports single resolution, it fails
reading directly from display-timings node, to support it
ofnode_decode_panel_timing is added.

Signed-off-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Nikhil M Jain
2023-01-31 15:35:14 +05:30
committed by Anatolij Gustschin
parent f4cf8710a1
commit 0347cc7732
4 changed files with 85 additions and 0 deletions
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12
include/dm/ofnode.h
View File

@@ -974,6 +974,18 @@ struct display_timing;
int ofnode_decode_display_timing(ofnode node, int index,
struct display_timing *config);
/**
* ofnode_decode_panel_timing() - decode display timings
*
* Decode panel timings from the supplied 'panel-timings' node.
*
* @node: 'display-timing' node containing the timing subnodes
* @config: Place to put timings
* Return: 0 if OK, -FDT_ERR_NOTFOUND if not found
*/
int ofnode_decode_panel_timing(ofnode node,
struct display_timing *config);
/**
* ofnode_get_property() - get a pointer to the value of a node property
*

20
include/dm/read.h
View File

@@ -784,6 +784,20 @@ int dev_read_pci_bus_range(const struct udevice *dev, struct resource *res);
int dev_decode_display_timing(const struct udevice *dev, int index,
struct display_timing *config);
/**
* dev_decode_panel_timing() - decode panel timings
*
* Decode display timings from the supplied 'panel-timings' node.
*
* @dev: device to read DT display timings from. The node linked to the device
* contains a child node called 'display-timings' which in turn contains
* one or more display timing nodes.
* @config: place to put timings
* Return: 0 if OK, -FDT_ERR_NOTFOUND if not found
*/
int dev_decode_panel_timing(const struct udevice *dev,
struct display_timing *config);
/**
* dev_get_phy_node() - Get PHY node for a MAC (if not fixed-link)
*
@@ -1183,6 +1197,12 @@ static inline int dev_decode_display_timing(const struct udevice *dev,
return ofnode_decode_display_timing(dev_ofnode(dev), index, config);
}
static inline int dev_decode_panel_timing(const struct udevice *dev,
struct display_timing *config)
{
return ofnode_decode_panel_timing(dev_ofnode(dev), config);
}
static inline ofnode dev_get_phy_node(const struct udevice *dev)
{
return ofnode_get_phy_node(dev_ofnode(dev));