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4ae3aeab32
Add vram frequency sysfs attributes under the below hierarchy;
/device/tile#/memory/freq0
|-max_freq
|-min_freq
v2: Drop "vram" from attribute names (Rodrigo)
v3: Add documentation for new sysfs (Riana)
Drop prefix from XEHP_PCODE_FREQUENCY_CONFIG (Riana)
v4: Create sysfs under tile#/freq0 after removal of
physical_memsize attrbute
v5: Revert back to creating sysfs under tile#/memory/freq0
Remove definition of GT_FREQUENCY_MULTIPLIER (Rodrigo)
v6: Rename attributes to max/min_freq (Anshuman)
Fix review comments (Rodrigo)
v7: Make documentation more verbose
Move sysfs to separate file (Anshuman)
v8: Fix platform specific conditions and add kernel doc (Anshuman)
Fix typos and remove redundant headers (Riana)
v9: Fix typo (Riana)
Change function name to include "sysfs" (Lucas)
Signed-off-by: Sujaritha Sundaresan <sujaritha.sundaresan@intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>
Link: https://lore.kernel.org/r/20240109110418.2065101-1-sujaritha.sundaresan@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#include <linux/kobject.h>
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#include <linux/sysfs.h>
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#include <drm/drm_managed.h>
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#include "xe_tile.h"
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#include "xe_tile_sysfs.h"
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#include "xe_vram_freq.h"
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static void xe_tile_sysfs_kobj_release(struct kobject *kobj)
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{
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kfree(kobj);
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}
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static const struct kobj_type xe_tile_sysfs_kobj_type = {
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.release = xe_tile_sysfs_kobj_release,
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.sysfs_ops = &kobj_sysfs_ops,
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};
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static void tile_sysfs_fini(struct drm_device *drm, void *arg)
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{
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struct xe_tile *tile = arg;
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kobject_put(tile->sysfs);
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}
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void xe_tile_sysfs_init(struct xe_tile *tile)
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{
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struct xe_device *xe = tile_to_xe(tile);
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struct device *dev = xe->drm.dev;
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struct kobj_tile *kt;
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int err;
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kt = kzalloc(sizeof(*kt), GFP_KERNEL);
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if (!kt)
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return;
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kobject_init(&kt->base, &xe_tile_sysfs_kobj_type);
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kt->tile = tile;
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err = kobject_add(&kt->base, &dev->kobj, "tile%d", tile->id);
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if (err) {
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kobject_put(&kt->base);
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drm_warn(&xe->drm, "failed to register TILE sysfs directory, err: %d\n", err);
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return;
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}
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tile->sysfs = &kt->base;
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xe_vram_freq_sysfs_init(tile);
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err = drmm_add_action_or_reset(&xe->drm, tile_sysfs_fini, tile);
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if (err)
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drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",
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__func__, err);
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}
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