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
138 static void tcs_list_gen(struct bcm_voter *voter, int bucket,  in tcs_list_gen()  argument
142 	struct list_head *bcm_list = &voter->commit_list;  in tcs_list_gen()
158 		wait = commit && (voter->tcs_wait & BIT(bucket));  in tcs_list_gen()
181  * of_bcm_voter_get - gets a bcm voter handle from DT node
183  * @name: name for the bcm voter device
189  * when matching bcm voter is yet to be found.
193 	struct bcm_voter *voter = ERR_PTR(-EPROBE_DEFER);  in of_bcm_voter_get()  local
204 		idx = of_property_match_string(np, "qcom,bcm-voter-names", name);  in of_bcm_voter_get()
214 			voter = temp;  in of_bcm_voter_get()
221 	return voter;  in of_bcm_voter_get()
227  * @voter: voter that the bcms are being added to
230 void qcom_icc_bcm_voter_add(struct bcm_voter *voter, struct qcom_icc_bcm *bcm)  in qcom_icc_bcm_voter_add()  argument
232 	if (!voter)  in qcom_icc_bcm_voter_add()
235 	mutex_lock(&voter->lock);  in qcom_icc_bcm_voter_add()
237 		list_add_tail(&bcm->list, &voter->commit_list);  in qcom_icc_bcm_voter_add()
240 		list_add_tail(&bcm->ws_list, &voter->ws_list);  in qcom_icc_bcm_voter_add()
242 	mutex_unlock(&voter->lock);  in qcom_icc_bcm_voter_add()
248  * @voter: voter that needs flushing
251  * associated with the voter. It conditionally generate WAKE and SLEEP commands
258 int qcom_icc_bcm_voter_commit(struct bcm_voter *voter)  in qcom_icc_bcm_voter_commit()  argument
266 	if (!voter)  in qcom_icc_bcm_voter_commit()
269 	mutex_lock(&voter->lock);  in qcom_icc_bcm_voter_commit()
270 	list_for_each_entry(bcm, &voter->commit_list, list)  in qcom_icc_bcm_voter_commit()
281 	list_sort(NULL, &voter->commit_list, cmp_vcd);  in qcom_icc_bcm_voter_commit()
287 	tcs_list_gen(voter, QCOM_ICC_BUCKET_AMC, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
291 	rpmh_invalidate(voter->dev);  in qcom_icc_bcm_voter_commit()
293 	ret = rpmh_write_batch(voter->dev, RPMH_ACTIVE_ONLY_STATE,  in qcom_icc_bcm_voter_commit()
300 	list_for_each_entry_safe(bcm, bcm_tmp, &voter->commit_list, list)  in qcom_icc_bcm_voter_commit()
303 	list_for_each_entry_safe(bcm, bcm_tmp, &voter->ws_list, ws_list) {  in qcom_icc_bcm_voter_commit()
313 			list_add_tail(&bcm->list, &voter->commit_list);  in qcom_icc_bcm_voter_commit()
318 	if (list_empty(&voter->commit_list))  in qcom_icc_bcm_voter_commit()
321 	list_sort(NULL, &voter->commit_list, cmp_vcd);  in qcom_icc_bcm_voter_commit()
323 	tcs_list_gen(voter, QCOM_ICC_BUCKET_WAKE, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
325 	ret = rpmh_write_batch(voter->dev, RPMH_WAKE_ONLY_STATE, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
331 	tcs_list_gen(voter, QCOM_ICC_BUCKET_SLEEP, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
333 	ret = rpmh_write_batch(voter->dev, RPMH_SLEEP_STATE, cmds, commit_idx);  in qcom_icc_bcm_voter_commit()
340 	list_for_each_entry_safe(bcm, bcm_tmp, &voter->commit_list, list)  in qcom_icc_bcm_voter_commit()
343 	mutex_unlock(&voter->lock);  in qcom_icc_bcm_voter_commit()
351 	struct bcm_voter *voter;  in qcom_icc_bcm_voter_probe()  local
353 	voter = devm_kzalloc(&pdev->dev, sizeof(*voter), GFP_KERNEL);  in qcom_icc_bcm_voter_probe()
354 	if (!voter)  in qcom_icc_bcm_voter_probe()
357 	voter->dev = &pdev->dev;  in qcom_icc_bcm_voter_probe()
358 	voter->np = np;  in qcom_icc_bcm_voter_probe()
360 	if (of_property_read_u32(np, "qcom,tcs-wait", &voter->tcs_wait))  in qcom_icc_bcm_voter_probe()
361 		voter->tcs_wait = QCOM_ICC_TAG_ACTIVE_ONLY;  in qcom_icc_bcm_voter_probe()
363 	mutex_init(&voter->lock);  in qcom_icc_bcm_voter_probe()
364 	INIT_LIST_HEAD(&voter->commit_list);  in qcom_icc_bcm_voter_probe()
365 	INIT_LIST_HEAD(&voter->ws_list);  in qcom_icc_bcm_voter_probe()
368 	list_add_tail(&voter->voter_node, &bcm_voters);  in qcom_icc_bcm_voter_probe()
375 	{ .compatible = "qcom,bcm-voter" },
390 MODULE_DESCRIPTION("Qualcomm BCM Voter interconnect driver");