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author | Dave Airlie <airlied@redhat.com> | 2015-06-23 10:13:18 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2015-06-23 10:13:18 +1000 |
commit | 75c73861cf48610e0be0615d490fc2af0552033d (patch) | |
tree | 723595e6ebe45c9675792bf06b7bf3d54bce3625 /drivers/of | |
parent | b7ddeee58bee54553552c1be9cf477efcdb2f30e (diff) | |
parent | 4f01e65037187581971f8b1068d4e1b1300a6562 (diff) | |
download | linux-75c73861cf48610e0be0615d490fc2af0552033d.tar.bz2 |
Merge branch 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next
Summary:
. Add atomic feature support
- Exynos also now supports atomic feature. However, it doesn't
guarantee atomic operation yet, and is required for more cleanups.
This time we just modified for Exynos drm driver to use atomic
interfaces instead of legacy ones. Next time, we will enhance
Exynos drm driver to support the atomic operation.
. Add iommu support
- This is a patch series according to below Exynos iommu integration
work with DT and dma-mapping subsystem,
http://lwn.net/Articles/607626/
. Consolidate Exynos drm driver initialization.
- This patch sereis resolves the issue that only the first compoments
was bound when happened deferred probing for other pipelines and
also makes the driver to be more cleanned up by moving the dispered
codes for registering kms drivers to one place.
. Add new MIC, DECON drivers, and MIPI-DSI support for Exynos5433.
- Add MIC(Mobile image compressor) driver. MIC is a new IP for Exynos5433
and later, which is used to transfer frame data to MIPI-DSI controller
compressing the data to reduce memory bandwidth.
- Add DECON driver for Exynos5433 SoC. This IP is a dislay controller
similar to Exynos7's one but this controller has much different registers
from Exynos7's ones so this driver has been implemented separately.
We will implement a helper modules for FIMD and two DECON controllers
to remove duplicated codes later.
- Add Exynos5433 SoC support to MIPI-DSI driver, and device tree
relevant patches.
* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: (50 commits)
ARM: dts: rename the clock of MIPI DSI 'pll_clk' to 'sclk_mipi'
drm/exynos: dsi: do not set TE GPIO direction by input
drm/exynos: dsi: add support for MIC driver as a bridge
drm/exynos: dsi: add support for Exynos5433
drm/exynos: dsi: make use of array for clock access
drm/exynos: dsi: make use of driver data for static values
drm/exynos: dsi: add macros for register access
drm/exynos: dsi: rename pll_clk to sclk_clk
drm/exynos: mic: add MIC driver
of: add helper for getting endpoint node of specific identifiers
drm/exynos: add Exynos5433 decon driver
drm/exynos: fix the input prompt of Exynos7 DECON
drm/exynos: add drm_iommu_attach_device_if_possible()
drm/exynos: Add the dependency for DRM_EXYNOS to DPI/DSI/DP
drm/exynos: remove the dependency of DP driver for ARCH_EXYNOS
drm/exynos: do not wait for vblank at atomic operation
drm/exynos: Remove unused vma field of exynos_drm_gem_obj
drm/exynos: fimd: fix page fault issue with iommu
drm/exynos: iommu: improve a check for non-iommu dma_ops
drm/exynos: iommu: detach from default dma-mapping domain on init
...
Diffstat (limited to 'drivers/of')
-rw-r--r-- | drivers/of/base.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 99764db0875a..f3b583b81105 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -2233,6 +2233,39 @@ struct device_node *of_graph_get_next_endpoint(const struct device_node *parent, EXPORT_SYMBOL(of_graph_get_next_endpoint); /** + * of_graph_get_endpoint_by_regs() - get endpoint node of specific identifiers + * @parent: pointer to the parent device node + * @port_reg: identifier (value of reg property) of the parent port node + * @reg: identifier (value of reg property) of the endpoint node + * + * Return: An 'endpoint' node pointer which is identified by reg and at the same + * is the child of a port node identified by port_reg. reg and port_reg are + * ignored when they are -1. + */ +struct device_node *of_graph_get_endpoint_by_regs( + const struct device_node *parent, int port_reg, int reg) +{ + struct of_endpoint endpoint; + struct device_node *node, *prev_node = NULL; + + while (1) { + node = of_graph_get_next_endpoint(parent, prev_node); + of_node_put(prev_node); + if (!node) + break; + + of_graph_parse_endpoint(node, &endpoint); + if (((port_reg == -1) || (endpoint.port == port_reg)) && + ((reg == -1) || (endpoint.id == reg))) + return node; + + prev_node = node; + } + + return NULL; +} + +/** * of_graph_get_remote_port_parent() - get remote port's parent node * @node: pointer to a local endpoint device_node * |