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:
36  * - act_freq: The actual resolved frequency decided by PCODE.
37  * - cur_freq: The current one requested by GuC PC to the PCODE.
38  * - rpn_freq: The Render Performance (RP) N level, which is the minimal one.
39  * - rpa_freq: The Render Performance (RP) A level, which is the achiveable one.
41  * - rpe_freq: The Render Performance (RP) E level, which is the efficient one.
43  * - rp0_freq: The Render Performance (RP) 0 level, which is the maximum one.
45  * device/tile#/gt#/freq0/<item>_freq *read-write* files:
47  * - min_freq: Min frequency request.
48  * - max_freq: Max frequency request.
49  *             If max <= min, then freq_min becomes a fixed frequency request.
55 	return &kobj_to_gt(dev->kobj.parent)->uc.guc.pc;  in dev_to_pc()
61 	return gt_to_xe(kobj_to_gt(dev->kobj.parent));  in dev_to_xe()
69 	u32 freq;  in act_freq_show()  local
72 	freq = xe_guc_pc_get_act_freq(pc);  in act_freq_show()
75 	return sysfs_emit(buf, "%d\n", freq);  in act_freq_show()
84 	u32 freq;  in cur_freq_show()  local
88 	ret = xe_guc_pc_get_cur_freq(pc, &freq);  in cur_freq_show()
93 	return sysfs_emit(buf, "%d\n", freq);  in cur_freq_show()
102 	u32 freq;  in rp0_freq_show()  local
105 	freq = xe_guc_pc_get_rp0_freq(pc);  in rp0_freq_show()
108 	return sysfs_emit(buf, "%d\n", freq);  in rp0_freq_show()
117 	u32 freq;  in rpe_freq_show()  local
120 	freq = xe_guc_pc_get_rpe_freq(pc);  in rpe_freq_show()
123 	return sysfs_emit(buf, "%d\n", freq);  in rpe_freq_show()
132 	u32 freq;  in rpa_freq_show()  local
135 	freq = xe_guc_pc_get_rpa_freq(pc);  in rpa_freq_show()
138 	return sysfs_emit(buf, "%d\n", freq);  in rpa_freq_show()
157 	u32 freq;  in min_freq_show()  local
161 	ret = xe_guc_pc_get_min_freq(pc, &freq);  in min_freq_show()
166 	return sysfs_emit(buf, "%d\n", freq);  in min_freq_show()
174 	u32 freq;  in min_freq_store()  local
177 	ret = kstrtou32(buff, 0, &freq);  in min_freq_store()
182 	ret = xe_guc_pc_set_min_freq(pc, freq);  in min_freq_store()
196 	u32 freq;  in max_freq_show()  local
200 	ret = xe_guc_pc_get_max_freq(pc, &freq);  in max_freq_show()
205 	return sysfs_emit(buf, "%d\n", freq);  in max_freq_show()
213 	u32 freq;  in max_freq_store()  local
216 	ret = kstrtou32(buff, 0, &freq);  in max_freq_store()
221 	ret = xe_guc_pc_set_max_freq(pc, freq);  in max_freq_store()
251  * xe_gt_freq_init - Initialize Xe Freq component
263 	if (xe->info.skip_guc_pc)  in xe_gt_freq_init()
266 	gt->freq = kobject_create_and_add("freq0", gt->sysfs);  in xe_gt_freq_init()
267 	if (!gt->freq)  in xe_gt_freq_init()
268 		return -ENOMEM;  in xe_gt_freq_init()
270 	err = sysfs_create_files(gt->freq, freq_attrs);  in xe_gt_freq_init()
274 	err = devm_add_action_or_reset(xe->drm.dev, freq_fini, gt->freq);  in xe_gt_freq_init()