kernel/linux.git/drivers/gpu/drm/tegra/Kconfig, branch v5.16

drm/tegra: dc: Support memory bandwidth management

2021-08-13T10:30:33+00:00

Display controller (DC) performs isochronous memory transfers, and thus, has a requirement for a minimum memory bandwidth that shall be fulfilled, otherwise framebuffer data can't be fetched fast enough and this results in a DC's data-FIFO underflow that follows by a visual corruption. The Memory Controller drivers provide facility for memory bandwidth management via interconnect API. Let's wire up the interconnect API support to the DC driver in order to fix the distorted display output on T30 Ouya, T124 TK1 and other Tegra devices. Tested-by: Peter Geis # Ouya T30 Tested-by: Matt Merhar # Ouya T30 Tested-by: Nicolas Chauvet # PAZ00 T20 and TK1 T124 Signed-off-by: Dmitry Osipenko [treding@nvidia.com: unbreak Tegra186+ display support] Signed-off-by: Thierry Reding

drm/tegra: Unconditionally select IOMMU_IOVA

2019-11-01T09:49:29+00:00

Currently configurations can be generated where IOMMU_SUPPORT is disabled but IOMMU_IOVA is built as a module and DRM_TEGRA as built-in. In such a case, the symbols guarded by IOMMU_IOVA will not be available when linking the Tegra DRM driver and cause a linking failure. Simplify this by unconditionally selecting IOMMU_IOVA, which makes sure that it will be forced to =y if DRM_TEGRA=y. Technically we can now get IOMMU_IOVA code built-in even if we don't use it (Tegra DRM only uses it when IOMMU_SUPPORT is also enabled), but such configuration are of a mostly academic nature. In all practical configurations we want IOMMU support anyway. Signed-off-by: Thierry Reding

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

drm/tegra: hdmi: Add cec-notifier support

2017-10-20T12:19:54+00:00

In order to support CEC the HDMI driver has to inform the CEC driver whenever the physical address changes. So when the EDID is read the CEC driver has to be informed and whenever the hotplug detect goes away. This is done through the cec-notifier framework. The link between the HDMI driver and the CEC driver is done through the hdmi-phandle property in the tegra-cec node in the device tree. Signed-off-by: Hans Verkuil Signed-off-by: Thierry Reding

drm/tegra: Add CONFIG_OF dependency

2017-08-17T15:57:08+00:00

Without CONFIG_OF, we can run into a build error: drivers/gpu/drm/tegra/dpaux.c:378:20: error: 'pinconf_generic_dt_node_to_map_group' undeclared here (not in a function); did you mean 'pinconf_generic_params'? .dt_node_to_map = pinconf_generic_dt_node_to_map_group, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pinconf_generic_params drivers/gpu/drm/tegra/dpaux.c:379:17: error: 'pinconf_generic_dt_free_map' undeclared here (not in a function); did you mean 'pinconf_generic_params'? This adds an explicit dependency. Signed-off-by: Arnd Bergmann Acked-by: Jon Hunter Signed-off-by: Thierry Reding

drm/tegra: Enable IOVA API when IOMMU support is enabled

2017-04-05T16:11:43+00:00

When support for an IOMMU has been enabled, make sure the IOVA helper code is also activated and the driver can properly manage the IO virtual address space. Signed-off-by: Thierry Reding

gpu: Remove depends on RESET_CONTROLLER when not a provider

2016-10-19T07:26:15+00:00

These GPU drivers only depend on the RESET_CONTROLLER config option to fix build issues that existed when there weren't stub reset APIs for reset controller consumers. Given that these drivers aren't providing any reset controllers themselves, they don't actually depend on the API to build (just to function) so they don't need to depend on it. Remove the dependency to fix recursive build errors like the following: drivers/usb/Kconfig:39:error: recursive dependency detected! drivers/usb/Kconfig:39: symbol USB is selected by MOUSE_APPLETOUCH drivers/input/mouse/Kconfig:187: symbol MOUSE_APPLETOUCH depends on INPUT drivers/input/Kconfig:8: symbol INPUT is selected by VT drivers/tty/Kconfig:12: symbol VT is selected by FB_STI drivers/video/fbdev/Kconfig:674: symbol FB_STI depends on FB drivers/video/fbdev/Kconfig:5: symbol FB is selected by DRM_KMS_FB_HELPER drivers/gpu/drm/Kconfig:42: symbol DRM_KMS_FB_HELPER is selected by DRM_KMS_CMA_HELPER drivers/gpu/drm/Kconfig:98: symbol DRM_KMS_CMA_HELPER is selected by DRM_IMX drivers/gpu/drm/imx/Kconfig:1: symbol DRM_IMX depends on IMX_IPUV3_CORE drivers/gpu/ipu-v3/Kconfig:1: symbol IMX_IPUV3_CORE depends on RESET_CONTROLLER drivers/reset/Kconfig:4: symbol RESET_CONTROLLER is selected by USB_CHIPIDEA drivers/usb/chipidea/Kconfig:1: symbol USB_CHIPIDEA depends on USB_EHCI_HCD drivers/usb/host/Kconfig:84: symbol USB_EHCI_HCD depends on USB Cc: Arnd Bergmann Cc: Cc: Heiko Stuebner Cc: Mark Yao Acked-by: Philipp Zabel Acked-by: robdclark@gmail.com Signed-off-by: Stephen Boyd Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161018205719.20575-1-stephen.boyd@linaro.org

drm/tegra: Remove local fbdev emulation Kconfig option

2015-11-24T10:41:50+00:00

DRM_TEGRA_FBDEV config is currently used to enable/disable legacy fbdev emulation for the tegra kms driver. Remove this local config option and use the top level DRM_FBDEV_EMULATION config option instead. Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/1445933459-5249-4-git-send-email-architt@codeaurora.org Signed-off-by: Daniel Vetter

drm/tegra: Depend on COMMON_CLK

2014-11-13T15:10:27+00:00

The introduction of the COMPILE_TEST dependency in commit 158b50aefa14 (drm/tegra: Increase compile test coverage) removes the dependency on COMMON_CLK (implicitly selected via ARCH_TEGRA, ARCH_MULTI_V7 and ARCH_MULTIPLATFORM). Reported-by: Russell King Signed-off-by: Thierry Reding

drm/tegra: Make legacy fbdev support optional

2013-12-20T14:56:05+00:00

A lot of the modern userspace is capable of working without the legacy fbdev support. kmscon can be used as a replacement for the framebuffer console, and KMS X drivers create their own framebuffers. Most people don't have a system where all of this works yet, though, so leave support enabled by default. Signed-off-by: Thierry Reding