1 // SPDX-License-Identifier: MIT
32  * Xe's Freq provides a sysfs API for frequency management:
34  * device/tile#/gt#/freq0/<item>_freq *read-only* files:
35  * - act_freq: The actual resolved frequency decided by PCODE.
36  * - cur_freq: The current one requested by GuC PC to the PCODE.
37  * - rpn_freq: The Render Performance (RP) N level, which is the minimal one.
38  * - rpe_freq: The Render Performance (RP) E level, which is the efficient one.
39  * - rp0_freq: The Render Performance (RP) 0 level, which is the maximum one.
41  * device/tile#/gt#/freq0/<item>_freq *read-write* files:
42  * - min_freq: Min frequency request.
43  * - max_freq: Max frequency request.
44  *             If max <= min, then freq_min becomes a fixed frequency request.
50 	return &kobj_to_gt(dev->kobj.parent)->uc.guc.pc;  in dev_to_pc()
56 	return gt_to_xe(kobj_to_gt(dev->kobj.parent));  in dev_to_xe()
63 	u32 freq;  in act_freq_show()  local
66 	freq = xe_guc_pc_get_act_freq(pc);  in act_freq_show()
69 	return sysfs_emit(buf, "%d\n", freq);  in act_freq_show()
77 	u32 freq;  in cur_freq_show()  local
81 	ret = xe_guc_pc_get_cur_freq(pc, &freq);  in cur_freq_show()
86 	return sysfs_emit(buf, "%d\n", freq);  in cur_freq_show()
94 	u32 freq;  in rp0_freq_show()  local
97 	freq = xe_guc_pc_get_rp0_freq(pc);  in rp0_freq_show()
100 	return sysfs_emit(buf, "%d\n", freq);  in rp0_freq_show()
108 	u32 freq;  in rpe_freq_show()  local
111 	freq = xe_guc_pc_get_rpe_freq(pc);  in rpe_freq_show()
114 	return sysfs_emit(buf, "%d\n", freq);  in rpe_freq_show()
131 	u32 freq;  in min_freq_show()  local
135 	ret = xe_guc_pc_get_min_freq(pc, &freq);  in min_freq_show()
140 	return sysfs_emit(buf, "%d\n", freq);  in min_freq_show()
147 	u32 freq;  in min_freq_store()  local
150 	ret = kstrtou32(buff, 0, &freq);  in min_freq_store()
155 	ret = xe_guc_pc_set_min_freq(pc, freq);  in min_freq_store()
168 	u32 freq;  in max_freq_show()  local
172 	ret = xe_guc_pc_get_max_freq(pc, &freq);  in max_freq_show()
177 	return sysfs_emit(buf, "%d\n", freq);  in max_freq_show()
184 	u32 freq;  in max_freq_store()  local
187 	ret = kstrtou32(buff, 0, &freq);  in max_freq_store()
192 	ret = xe_guc_pc_set_max_freq(pc, freq);  in max_freq_store()
221  * xe_gt_freq_init - Initialize Xe Freq component
233 	if (xe->info.skip_guc_pc)  in xe_gt_freq_init()
236 	gt->freq = kobject_create_and_add("freq0", gt->sysfs);  in xe_gt_freq_init()
237 	if (!gt->freq)  in xe_gt_freq_init()
238 		return -ENOMEM;  in xe_gt_freq_init()
240 	err = devm_add_action(xe->drm.dev, freq_fini, gt->freq);  in xe_gt_freq_init()
244 	err = sysfs_create_files(gt->freq, freq_attrs);  in xe_gt_freq_init()