drivers/mailbox/tegra-hsp.c

149 static bool tegra_hsp_doorbell_can_ring(struct tegra_hsp_doorbell *db)
153 	value = tegra_hsp_channel_readl(&db->channel, HSP_DB_ENABLE);
173 	struct tegra_hsp_doorbell *db;
177 	db = __tegra_hsp_doorbell_get(hsp, master);
180 	return db;
186 	struct tegra_hsp_doorbell *db;
189 	db = tegra_hsp_doorbell_get(hsp, TEGRA_HSP_DB_MASTER_CCPLEX);
190 	if (!db)
193 	value = tegra_hsp_channel_readl(&db->channel, HSP_DB_PENDING);
194 	tegra_hsp_channel_writel(&db->channel, value, HSP_DB_PENDING);
199 		struct tegra_hsp_doorbell *db;
201 		db = __tegra_hsp_doorbell_get(hsp, master);
207 		 * In that case, db->channel.chan will still be NULL here and
213 		if (db && db->channel.chan)
214 			mbox_chan_received_data(db->channel.chan, NULL);
273 	struct tegra_hsp_doorbell *db;
277 	db = devm_kzalloc(hsp->dev, sizeof(*db), GFP_KERNEL);
278 	if (!db)
284 	db->channel.regs = hsp->regs + offset;
285 	db->channel.hsp = hsp;
287 	db->name = devm_kstrdup_const(hsp->dev, name, GFP_KERNEL);
288 	db->master = master;
289 	db->index = index;
292 	list_add_tail(&db->list, &hsp->doorbells);
295 	return &db->channel;
300 	struct tegra_hsp_doorbell *db = chan->con_priv;
302 	tegra_hsp_channel_writel(&db->channel, 1, HSP_DB_TRIGGER);
309 	struct tegra_hsp_doorbell *db = chan->con_priv;
310 	struct tegra_hsp *hsp = db->channel.hsp;
315 	if (db->master >= chan->mbox->num_chans) {
318 			db->master);
331 	if (tegra_is_silicon() && !tegra_hsp_doorbell_can_ring(db))
337 	value |= BIT(db->master);
347 	struct tegra_hsp_doorbell *db = chan->con_priv;
348 	struct tegra_hsp *hsp = db->channel.hsp;
360 	value &= ~BIT(db->master);
586 	struct tegra_hsp_doorbell *db;
594 	db = tegra_hsp_doorbell_get(hsp, master);
595 	if (db)
596 		channel = &db->channel;
607 			chan->con_priv = db;
882 	struct tegra_hsp_doorbell *db;
884 	list_for_each_entry(db, &hsp->doorbells, list) {
885 		if (db->channel.chan)
886 			tegra_hsp_doorbell_startup(db->channel.chan);