69 static void am33xx_txev_eoi(struct wkup_m3_ipc *m3_ipc)  in am33xx_txev_eoi()  argument
72 	       m3_ipc->ipc_mem_base + AM33XX_CONTROL_M3_TXEV_EOI);  in am33xx_txev_eoi()
75 static void am33xx_txev_enable(struct wkup_m3_ipc *m3_ipc)  in am33xx_txev_enable()  argument
78 	       m3_ipc->ipc_mem_base + AM33XX_CONTROL_M3_TXEV_EOI);  in am33xx_txev_enable()
81 static void wkup_m3_ctrl_ipc_write(struct wkup_m3_ipc *m3_ipc,  in wkup_m3_ctrl_ipc_write()  argument
88 	writel(val, m3_ipc->ipc_mem_base +  in wkup_m3_ctrl_ipc_write()
92 static unsigned int wkup_m3_ctrl_ipc_read(struct wkup_m3_ipc *m3_ipc,  in wkup_m3_ctrl_ipc_read()  argument
99 	return readl(m3_ipc->ipc_mem_base +  in wkup_m3_ctrl_ipc_read()
103 static int wkup_m3_fw_version_read(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_fw_version_read()  argument
107 	val = wkup_m3_ctrl_ipc_read(m3_ipc, 2);  in wkup_m3_fw_version_read()
114 	struct wkup_m3_ipc *m3_ipc = ipc_data;  in wkup_m3_txev_handler()  local
115 	struct device *dev = m3_ipc->dev;  in wkup_m3_txev_handler()
118 	am33xx_txev_eoi(m3_ipc);  in wkup_m3_txev_handler()
120 	switch (m3_ipc->state) {  in wkup_m3_txev_handler()
122 		ver = wkup_m3_fw_version_read(m3_ipc);  in wkup_m3_txev_handler()
132 		m3_ipc->state = M3_STATE_INITED;  in wkup_m3_txev_handler()
133 		complete(&m3_ipc->sync_complete);  in wkup_m3_txev_handler()
136 		m3_ipc->state = M3_STATE_INITED;  in wkup_m3_txev_handler()
137 		complete(&m3_ipc->sync_complete);  in wkup_m3_txev_handler()
140 		complete(&m3_ipc->sync_complete);  in wkup_m3_txev_handler()
146 	am33xx_txev_enable(m3_ipc);  in wkup_m3_txev_handler()
151 static int wkup_m3_ping(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ping()  argument
153 	struct device *dev = m3_ipc->dev;  in wkup_m3_ping()
157 	if (!m3_ipc->mbox) {  in wkup_m3_ping()
170 	ret = mbox_send_message(m3_ipc->mbox, &dummy_msg);  in wkup_m3_ping()
177 	ret = wait_for_completion_timeout(&m3_ipc->sync_complete,  in wkup_m3_ping()
181 		m3_ipc->state = M3_STATE_UNKNOWN;  in wkup_m3_ping()
185 	mbox_client_txdone(m3_ipc->mbox, 0);  in wkup_m3_ping()
189 static int wkup_m3_ping_noirq(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ping_noirq()  argument
191 	struct device *dev = m3_ipc->dev;  in wkup_m3_ping_noirq()
195 	if (!m3_ipc->mbox) {  in wkup_m3_ping_noirq()
201 	ret = mbox_send_message(m3_ipc->mbox, &dummy_msg);  in wkup_m3_ping_noirq()
208 	mbox_client_txdone(m3_ipc->mbox, 0);  in wkup_m3_ping_noirq()
212 static int wkup_m3_is_available(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_is_available()  argument
214 	return ((m3_ipc->state != M3_STATE_RESET) &&  in wkup_m3_is_available()
215 		(m3_ipc->state != M3_STATE_UNKNOWN));  in wkup_m3_is_available()
226 static void wkup_m3_set_mem_type(struct wkup_m3_ipc *m3_ipc, int mem_type)  in wkup_m3_set_mem_type()  argument
228 	m3_ipc->mem_type = mem_type;  in wkup_m3_set_mem_type()
235 static void wkup_m3_set_resume_address(struct wkup_m3_ipc *m3_ipc, void *addr)  in wkup_m3_set_resume_address()  argument
237 	m3_ipc->resume_addr = (unsigned long)addr;  in wkup_m3_set_resume_address()
247 static int wkup_m3_request_pm_status(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_request_pm_status()  argument
252 	val = wkup_m3_ctrl_ipc_read(m3_ipc, 1);  in wkup_m3_request_pm_status()
267 static int wkup_m3_prepare_low_power(struct wkup_m3_ipc *m3_ipc, int state)  in wkup_m3_prepare_low_power()  argument
269 	struct device *dev = m3_ipc->dev;  in wkup_m3_prepare_low_power()
273 	if (!wkup_m3_is_available(m3_ipc))  in wkup_m3_prepare_low_power()
291 	wkup_m3_ctrl_ipc_write(m3_ipc, m3_ipc->resume_addr, 0);  in wkup_m3_prepare_low_power()
292 	wkup_m3_ctrl_ipc_write(m3_ipc, m3_power_state, 1);  in wkup_m3_prepare_low_power()
293 	wkup_m3_ctrl_ipc_write(m3_ipc, m3_ipc->mem_type, 4);  in wkup_m3_prepare_low_power()
295 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 2);  in wkup_m3_prepare_low_power()
296 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 3);  in wkup_m3_prepare_low_power()
297 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 5);  in wkup_m3_prepare_low_power()
298 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 6);  in wkup_m3_prepare_low_power()
299 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 7);  in wkup_m3_prepare_low_power()
301 	m3_ipc->state = M3_STATE_MSG_FOR_LP;  in wkup_m3_prepare_low_power()
304 		ret = wkup_m3_ping_noirq(m3_ipc);  in wkup_m3_prepare_low_power()
306 		ret = wkup_m3_ping(m3_ipc);  in wkup_m3_prepare_low_power()
321 static int wkup_m3_finish_low_power(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_finish_low_power()  argument
323 	struct device *dev = m3_ipc->dev;  in wkup_m3_finish_low_power()
326 	if (!wkup_m3_is_available(m3_ipc))  in wkup_m3_finish_low_power()
329 	wkup_m3_ctrl_ipc_write(m3_ipc, IPC_CMD_RESET, 1);  in wkup_m3_finish_low_power()
330 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 2);  in wkup_m3_finish_low_power()
332 	m3_ipc->state = M3_STATE_MSG_FOR_RESET;  in wkup_m3_finish_low_power()
334 	ret = wkup_m3_ping(m3_ipc);  in wkup_m3_finish_low_power()
347 static const char *wkup_m3_request_wake_src(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_request_wake_src()  argument
352 	val = wkup_m3_ctrl_ipc_read(m3_ipc, 6);  in wkup_m3_request_wake_src()
368 static void wkup_m3_set_rtc_only(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_set_rtc_only()  argument
405 void wkup_m3_ipc_put(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ipc_put()  argument
412 static void wkup_m3_rproc_boot_thread(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_rproc_boot_thread()  argument
414 	struct device *dev = m3_ipc->dev;  in wkup_m3_rproc_boot_thread()
417 	init_completion(&m3_ipc->sync_complete);  in wkup_m3_rproc_boot_thread()
419 	ret = rproc_boot(m3_ipc->rproc);  in wkup_m3_rproc_boot_thread()
434 	struct wkup_m3_ipc *m3_ipc;  in wkup_m3_ipc_probe()  local
436 	m3_ipc = devm_kzalloc(dev, sizeof(*m3_ipc), GFP_KERNEL);  in wkup_m3_ipc_probe()
437 	if (!m3_ipc)  in wkup_m3_ipc_probe()
441 	m3_ipc->ipc_mem_base = devm_ioremap_resource(dev, res);  in wkup_m3_ipc_probe()
442 	if (IS_ERR(m3_ipc->ipc_mem_base)) {  in wkup_m3_ipc_probe()
444 		return PTR_ERR(m3_ipc->ipc_mem_base);  in wkup_m3_ipc_probe()
454 			       0, "wkup_m3_txev", m3_ipc);  in wkup_m3_ipc_probe()
460 	m3_ipc->mbox_client.dev = dev;  in wkup_m3_ipc_probe()
461 	m3_ipc->mbox_client.tx_done = NULL;  in wkup_m3_ipc_probe()
462 	m3_ipc->mbox_client.tx_prepare = NULL;  in wkup_m3_ipc_probe()
463 	m3_ipc->mbox_client.rx_callback = NULL;  in wkup_m3_ipc_probe()
464 	m3_ipc->mbox_client.tx_block = false;  in wkup_m3_ipc_probe()
465 	m3_ipc->mbox_client.knows_txdone = false;  in wkup_m3_ipc_probe()
467 	m3_ipc->mbox = mbox_request_channel(&m3_ipc->mbox_client, 0);  in wkup_m3_ipc_probe()
469 	if (IS_ERR(m3_ipc->mbox)) {  in wkup_m3_ipc_probe()
471 			PTR_ERR(m3_ipc->mbox));  in wkup_m3_ipc_probe()
472 		return PTR_ERR(m3_ipc->mbox);  in wkup_m3_ipc_probe()
488 	m3_ipc->rproc = m3_rproc;  in wkup_m3_ipc_probe()
489 	m3_ipc->dev = dev;  in wkup_m3_ipc_probe()
490 	m3_ipc->state = M3_STATE_RESET;  in wkup_m3_ipc_probe()
492 	m3_ipc->ops = &ipc_ops;  in wkup_m3_ipc_probe()
499 	task = kthread_run((void *)wkup_m3_rproc_boot_thread, m3_ipc,  in wkup_m3_ipc_probe()
508 	m3_ipc_state = m3_ipc;  in wkup_m3_ipc_probe()
515 	mbox_free_channel(m3_ipc->mbox);  in wkup_m3_ipc_probe()