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drm: of: Export and rename drm_crtc_port_mask()

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Function is useful when drm_of_find_possible_crtcs() can't be used and
custom parsing is needed. This can happen for example when there is a
node with multiple muxes between crtc and encoder.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
[maxime: change the function to have a consistent prefix]
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180625120304.7543-22-jernej.skrabec@siol.net
This commit is contained in:
Jernej Skrabec 2018-06-25 14:03:01 +02:00 committed by Maxime Ripard
parent b46e2c9f5f
commit 8b5f7a6246
No known key found for this signature in database
GPG Key ID: D2B4C094214DAF74
2 changed files with 13 additions and 4 deletions
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9
drivers/gpu/drm/drm_of.c
View File

@ -15,15 +15,15 @@ static void drm_release_of(struct device *dev, void *data)
} }
/** /**
* drm_crtc_port_mask - find the mask of a registered CRTC by port OF node * drm_of_crtc_port_mask - find the mask of a registered CRTC by port OF node
* @dev: DRM device * @dev: DRM device
* @port: port OF node * @port: port OF node
* *
* Given a port OF node, return the possible mask of the corresponding * Given a port OF node, return the possible mask of the corresponding
* CRTC within a device's list of CRTCs. Returns zero if not found. * CRTC within a device's list of CRTCs. Returns zero if not found.
*/ */
static uint32_t drm_crtc_port_mask(struct drm_device *dev, uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
struct device_node *port) struct device_node *port)
{ {
unsigned int index = 0; unsigned int index = 0;
struct drm_crtc *tmp; struct drm_crtc *tmp;
@ -37,6 +37,7 @@ static uint32_t drm_crtc_port_mask(struct drm_device *dev,
return 0; return 0;
} }
EXPORT_SYMBOL(drm_of_crtc_port_mask);
/** /**
* drm_of_find_possible_crtcs - find the possible CRTCs for an encoder port * drm_of_find_possible_crtcs - find the possible CRTCs for an encoder port
@ -62,7 +63,7 @@ uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
return 0; return 0;
} }
possible_crtcs |= drm_crtc_port_mask(dev, remote_port); possible_crtcs |= drm_of_crtc_port_mask(dev, remote_port);
of_node_put(remote_port); of_node_put(remote_port);
} }

8
include/drm/drm_of.h
View File

@ -17,6 +17,8 @@ struct drm_bridge;
struct device_node; struct device_node;
#ifdef CONFIG_OF #ifdef CONFIG_OF
uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
struct device_node *port);
uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
struct device_node *port); struct device_node *port);
void drm_of_component_match_add(struct device *master, void drm_of_component_match_add(struct device *master,
@ -34,6 +36,12 @@ int drm_of_find_panel_or_bridge(const struct device_node *np,
struct drm_panel **panel, struct drm_panel **panel,
struct drm_bridge **bridge); struct drm_bridge **bridge);
#else #else
static inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
struct device_node *port)
{
return 0;
}
static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
struct device_node *port) struct device_node *port)
{ {