diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-16 15:48:00 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-16 15:48:00 -0800 |
commit | 796e1c55717e9a6ff5c81b12289ffa1ffd919b6f (patch) | |
tree | 27ce45cb1227156b72c641dbcbf2b399d23ba63d /drivers/gpu/drm/i915/intel_atomic.c | |
parent | 8c334ce8f0fec7122fc3059c52a697b669a01b41 (diff) | |
parent | 45ee2dbc65cbf6910892c480e6f428be342fa733 (diff) |
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"This is the main drm pull, it has a shared branch with some alsa
crossover but everything should be acked by relevant people.
New drivers:
- ATMEL HLCDC driver
- designware HDMI core support (used in multiple SoCs).
core:
- lots more atomic modesetting work, properties and atomic ioctl
(hidden under option)
- bridge rework allows support for Samsung exynos chromebooks to
work finally.
- some more panels supported
i915:
- atomic plane update support
- DSI uses shared DSI infrastructure
- Skylake basic support is all merged now
- component framework used for i915/snd-hda interactions
- write-combine cpu memory mappings
- engine init code refactored
- full ppgtt enabled where execlists are enabled.
- cherryview rps/gpu turbo and pipe CRC support.
radeon:
- indirect draw support for evergreen/cayman
- SMC and manual fan control for SI/CI
- Displayport audio support
amdkfd:
- SDMA usermode queue support
- replace suballocator usage with more suitable one
- rework for allowing interfacing to more than radeon
nouveau:
- major renaming in prep for later splitting work
- merge arm platform driver into nouveau
- GK20A reclocking support
msm:
- conversion to atomic modesetting
- YUV support for mdp4/5
- eDP support
- hw cursor for mdp5
tegra:
- conversion to atomic modesetting
- better suspend/resume support for child devices
rcar-du:
- interlaced support
imx:
- move to using dw_hdmi shared support
- mode_fixup support
sti:
- DVO support
- HDMI infoframe support
exynos:
- refactoring and cleanup, removed lots of internal unnecessary
abstraction
- exynos7 DECON display controller support
Along with the usual bunch of fixes, cleanups etc"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (724 commits)
drm/radeon: fix voltage setup on hawaii
drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if necessary
drm/radeon: only enable kv/kb dpm interrupts once v3
drm/radeon: workaround for CP HW bug on CIK
drm/radeon: Don't try to enable write-combining without PAT
drm/radeon: use 0-255 rather than 0-100 for pwm fan range
drm/i915: Clamp efficient frequency to valid range
drm/i915: Really ignore long HPD pulses on eDP
drm/exynos: Add DECON driver
drm/i915: Correct the base value while updating LP_OUTPUT_HOLD in MIPI_PORT_CTRL
drm/i915: Insert a command barrier on BLT/BSD cache flushes
drm/i915: Drop vblank wait from intel_dp_link_down
drm/exynos: fix NULL pointer reference
drm/exynos: remove exynos_plane_dpms
drm/exynos: remove mode property of exynos crtc
drm/exynos: Remove exynos_plane_dpms() call with no effect
drm/i915: Squelch overzealous uncore reset WARN_ON
drm/i915: Take runtime pm reference on hangcheck_info
drm/i915: Correct the IOSF Dev_FN field for IOSF transfers
drm/exynos: fix DMA_ATTR_NO_KERNEL_MAPPING usage
...
Diffstat (limited to 'drivers/gpu/drm/i915/intel_atomic.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_atomic.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c new file mode 100644 index 000000000000..19a9dd5408f3 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_atomic.c @@ -0,0 +1,237 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +/** + * DOC: atomic modeset support + * + * The functions here implement the state management and hardware programming + * dispatch required by the atomic modeset infrastructure. + * See intel_atomic_plane.c for the plane-specific atomic functionality. + */ + +#include <drm/drmP.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_plane_helper.h> +#include "intel_drv.h" + + +/** + * intel_atomic_check - validate state object + * @dev: drm device + * @state: state to validate + */ +int intel_atomic_check(struct drm_device *dev, + struct drm_atomic_state *state) +{ + int nplanes = dev->mode_config.num_total_plane; + int ncrtcs = dev->mode_config.num_crtc; + int nconnectors = dev->mode_config.num_connector; + enum pipe nuclear_pipe = INVALID_PIPE; + int ret; + int i; + bool not_nuclear = false; + + /* + * FIXME: At the moment, we only support "nuclear pageflip" on a + * single CRTC. Cross-crtc updates will be added later. + */ + for (i = 0; i < nplanes; i++) { + struct intel_plane *plane = to_intel_plane(state->planes[i]); + if (!plane) + continue; + + if (nuclear_pipe == INVALID_PIPE) { + nuclear_pipe = plane->pipe; + } else if (nuclear_pipe != plane->pipe) { + DRM_DEBUG_KMS("i915 only support atomic plane operations on a single CRTC at the moment\n"); + return -EINVAL; + } + } + + /* + * FIXME: We only handle planes for now; make sure there are no CRTC's + * or connectors involved. + */ + state->allow_modeset = false; + for (i = 0; i < ncrtcs; i++) { + struct intel_crtc *crtc = to_intel_crtc(state->crtcs[i]); + if (crtc && crtc->pipe != nuclear_pipe) + not_nuclear = true; + } + for (i = 0; i < nconnectors; i++) + if (state->connectors[i] != NULL) + not_nuclear = true; + + if (not_nuclear) { + DRM_DEBUG_KMS("i915 only supports atomic plane operations at the moment\n"); + return -EINVAL; + } + + ret = drm_atomic_helper_check_planes(dev, state); + if (ret) + return ret; + + return ret; +} + + +/** + * intel_atomic_commit - commit validated state object + * @dev: DRM device + * @state: the top-level driver state object + * @async: asynchronous commit + * + * This function commits a top-level state object that has been validated + * with drm_atomic_helper_check(). + * + * FIXME: Atomic modeset support for i915 is not yet complete. At the moment + * we can only handle plane-related operations and do not yet support + * asynchronous commit. + * + * RETURNS + * Zero for success or -errno. + */ +int intel_atomic_commit(struct drm_device *dev, + struct drm_atomic_state *state, + bool async) +{ + int ret; + int i; + + if (async) { + DRM_DEBUG_KMS("i915 does not yet support async commit\n"); + return -EINVAL; + } + + ret = drm_atomic_helper_prepare_planes(dev, state); + if (ret) + return ret; + + /* Point of no return */ + + /* + * FIXME: The proper sequence here will eventually be: + * + * drm_atomic_helper_swap_state(dev, state) + * drm_atomic_helper_commit_pre_planes(dev, state); + * drm_atomic_helper_commit_planes(dev, state); + * drm_atomic_helper_commit_post_planes(dev, state); + * drm_atomic_helper_wait_for_vblanks(dev, state); + * drm_atomic_helper_cleanup_planes(dev, state); + * drm_atomic_state_free(state); + * + * once we have full atomic modeset. For now, just manually update + * plane states to avoid clobbering good states with dummy states + * while nuclear pageflipping. + */ + for (i = 0; i < dev->mode_config.num_total_plane; i++) { + struct drm_plane *plane = state->planes[i]; + + if (!plane) + continue; + + plane->state->state = state; + swap(state->plane_states[i], plane->state); + plane->state->state = NULL; + } + drm_atomic_helper_commit_planes(dev, state); + drm_atomic_helper_wait_for_vblanks(dev, state); + drm_atomic_helper_cleanup_planes(dev, state); + drm_atomic_state_free(state); + + return 0; +} + +/** + * intel_connector_atomic_get_property - fetch connector property value + * @connector: connector to fetch property for + * @state: state containing the property value + * @property: property to look up + * @val: pointer to write property value into + * + * The DRM core does not store shadow copies of properties for + * atomic-capable drivers. This entrypoint is used to fetch + * the current value of a driver-specific connector property. + */ +int +intel_connector_atomic_get_property(struct drm_connector *connector, + const struct drm_connector_state *state, + struct drm_property *property, + uint64_t *val) +{ + int i; + + /* + * TODO: We only have atomic modeset for planes at the moment, so the + * crtc/connector code isn't quite ready yet. Until it's ready, + * continue to look up all property values in the DRM's shadow copy + * in obj->properties->values[]. + * + * When the crtc/connector state work matures, this function should + * be updated to read the values out of the state structure instead. + */ + for (i = 0; i < connector->base.properties->count; i++) { + if (connector->base.properties->properties[i] == property) { + *val = connector->base.properties->values[i]; + return 0; + } + } + + return -EINVAL; +} + +/* + * intel_crtc_duplicate_state - duplicate crtc state + * @crtc: drm crtc + * + * Allocates and returns a copy of the crtc state (both common and + * Intel-specific) for the specified crtc. + * + * Returns: The newly allocated crtc state, or NULL on failure. + */ +struct drm_crtc_state * +intel_crtc_duplicate_state(struct drm_crtc *crtc) +{ + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + + if (WARN_ON(!intel_crtc->config)) + return kzalloc(sizeof(*intel_crtc->config), GFP_KERNEL); + + return kmemdup(intel_crtc->config, sizeof(*intel_crtc->config), + GFP_KERNEL); +} + +/** + * intel_crtc_destroy_state - destroy crtc state + * @crtc: drm crtc + * + * Destroys the crtc state (both common and Intel-specific) for the + * specified crtc. + */ +void +intel_crtc_destroy_state(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + drm_atomic_helper_crtc_destroy_state(crtc, state); +} |