16 #include "bcm-voter.h"
23  * struct bcm_voter - Bus Clock Manager voter
26  * @lock: mutex to protect commit and wake/sleep lists in the voter
156 static void tcs_list_gen(struct bcm_voter *voter, int bucket,  in tcs_list_gen()  argument
160 	struct list_head *bcm_list = &voter->commit_list;  in tcs_list_gen()
176 		wait = commit && (voter->tcs_wait & BIT(bucket));  in tcs_list_gen()
199  * of_bcm_voter_get - gets a bcm voter handle from DT node
201  * @name: name for the bcm voter device
207  * when matching bcm voter is yet to be found.
211 	struct bcm_voter *voter = ERR_PTR(-EPROBE_DEFER);  in of_bcm_voter_get()  local
222 		idx = of_property_match_string(np, "qcom,bcm-voter-names", name);  in of_bcm_voter_get()
232 			voter = temp;  in of_bcm_voter_get()
239 	return voter;  in of_bcm_voter_get()
245  * @voter: voter that the bcms are being added to
248 void qcom_icc_bcm_voter_add(struct bcm_voter *voter, struct qcom_icc_bcm *bcm)  in qcom_icc_bcm_voter_add()  argument
250 	if (!voter)  in qcom_icc_bcm_voter_add()
253 	mutex_lock(&voter->lock);  in qcom_icc_bcm_voter_add()
255 		list_add_tail(&bcm->list, &voter->commit_list);  in qcom_icc_bcm_voter_add()
258 		list_add_tail(&bcm->ws_list, &voter->ws_list);  in qcom_icc_bcm_voter_add()
260 	mutex_unlock(&voter->lock);  in qcom_icc_bcm_voter_add()
266  * @voter: voter that needs flushing
269  * associated with the voter. It conditionally generate WAKE and SLEEP commands
276 int qcom_icc_bcm_voter_commit(struct bcm_voter *voter)  in qcom_icc_bcm_voter_commit()  argument
284 	if (!voter)  in qcom_icc_bcm_voter_commit()
287 	mutex_lock(&voter->lock);  in qcom_icc_bcm_voter_commit()
288 	list_for_each_entry(bcm, &voter->commit_list, list) {  in qcom_icc_bcm_voter_commit()
303 	list_sort(NULL, &voter->commit_list, cmp_vcd);  in qcom_icc_bcm_voter_commit()
309 	tcs_list_gen(voter, QCOM_ICC_BUCKET_AMC, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
313 	rpmh_invalidate(voter->dev);  in qcom_icc_bcm_voter_commit()
315 	ret = rpmh_write_batch(voter->dev, RPMH_ACTIVE_ONLY_STATE,  in qcom_icc_bcm_voter_commit()
322 	list_for_each_entry_safe(bcm, bcm_tmp, &voter->commit_list, list)  in qcom_icc_bcm_voter_commit()
325 	list_for_each_entry_safe(bcm, bcm_tmp, &voter->ws_list, ws_list) {  in qcom_icc_bcm_voter_commit()
335 			list_add_tail(&bcm->list, &voter->commit_list);  in qcom_icc_bcm_voter_commit()
340 	if (list_empty(&voter->commit_list))  in qcom_icc_bcm_voter_commit()
343 	list_sort(NULL, &voter->commit_list, cmp_vcd);  in qcom_icc_bcm_voter_commit()
345 	tcs_list_gen(voter, QCOM_ICC_BUCKET_WAKE, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
347 	ret = rpmh_write_batch(voter->dev, RPMH_WAKE_ONLY_STATE, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
353 	tcs_list_gen(voter, QCOM_ICC_BUCKET_SLEEP, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
355 	ret = rpmh_write_batch(voter->dev, RPMH_SLEEP_STATE, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
362 	list_for_each_entry_safe(bcm, bcm_tmp, &voter->commit_list, list)  in qcom_icc_bcm_voter_commit()
365 	mutex_unlock(&voter->lock);  in qcom_icc_bcm_voter_commit()
373 	struct bcm_voter *voter;  in qcom_icc_bcm_voter_probe()  local
375 	voter = devm_kzalloc(&pdev->dev, sizeof(*voter), GFP_KERNEL);  in qcom_icc_bcm_voter_probe()
376 	if (!voter)  in qcom_icc_bcm_voter_probe()
379 	voter->dev = &pdev->dev;  in qcom_icc_bcm_voter_probe()
380 	voter->np = np;  in qcom_icc_bcm_voter_probe()
382 	if (of_property_read_u32(np, "qcom,tcs-wait", &voter->tcs_wait))  in qcom_icc_bcm_voter_probe()
383 		voter->tcs_wait = QCOM_ICC_TAG_ACTIVE_ONLY;  in qcom_icc_bcm_voter_probe()
385 	mutex_init(&voter->lock);  in qcom_icc_bcm_voter_probe()
386 	INIT_LIST_HEAD(&voter->commit_list);  in qcom_icc_bcm_voter_probe()
387 	INIT_LIST_HEAD(&voter->ws_list);  in qcom_icc_bcm_voter_probe()
390 	list_add_tail(&voter->voter_node, &bcm_voters);  in qcom_icc_bcm_voter_probe()
397 	{ .compatible = "qcom,bcm-voter" },
412 MODULE_DESCRIPTION("Qualcomm BCM Voter interconnect driver");