96 static unsigned long wkup_m3_copy_aux_data(struct wkup_m3_ipc *m3_ipc,  in wkup_m3_copy_aux_data()  argument
103 	aux_data_addr = rproc_da_to_va(m3_ipc->rproc,  in wkup_m3_copy_aux_data()
116 	struct wkup_m3_ipc *m3_ipc = context;  in wkup_m3_scale_data_fw_cb()  local
117 	struct device *dev = m3_ipc->dev;  in wkup_m3_scale_data_fw_cb()
131 	aux_base = wkup_m3_copy_aux_data(m3_ipc, fw->data + sizeof(hdr),  in wkup_m3_scale_data_fw_cb()
137 	m3_ipc->volt_scale_offsets = val;  in wkup_m3_scale_data_fw_cb()
143 static int wkup_m3_init_scale_data(struct wkup_m3_ipc *m3_ipc,  in wkup_m3_init_scale_data()  argument
153 	if (!m3_ipc->sd_fw_name)  in wkup_m3_init_scale_data()
157 				      m3_ipc->sd_fw_name, dev, GFP_ATOMIC,  in wkup_m3_init_scale_data()
158 				      m3_ipc, wkup_m3_scale_data_fw_cb);  in wkup_m3_init_scale_data()
200 static int wkup_m3_ipc_dbg_init(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ipc_dbg_init()  argument
202 	m3_ipc->dbg_path = debugfs_create_dir("wkup_m3_ipc", NULL);  in wkup_m3_ipc_dbg_init()
204 	if (IS_ERR(m3_ipc->dbg_path))  in wkup_m3_ipc_dbg_init()
208 				  m3_ipc->dbg_path,  in wkup_m3_ipc_dbg_init()
209 				  &m3_ipc->halt,  in wkup_m3_ipc_dbg_init()
215 static inline void wkup_m3_ipc_dbg_destroy(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ipc_dbg_destroy()  argument
217 	debugfs_remove_recursive(m3_ipc->dbg_path);  in wkup_m3_ipc_dbg_destroy()
220 static inline int wkup_m3_ipc_dbg_init(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ipc_dbg_init()  argument
225 static inline void wkup_m3_ipc_dbg_destroy(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ipc_dbg_destroy()  argument
230 static void am33xx_txev_eoi(struct wkup_m3_ipc *m3_ipc)  in am33xx_txev_eoi()  argument
233 	       m3_ipc->ipc_mem_base + AM33XX_CONTROL_M3_TXEV_EOI);  in am33xx_txev_eoi()
236 static void am33xx_txev_enable(struct wkup_m3_ipc *m3_ipc)  in am33xx_txev_enable()  argument
239 	       m3_ipc->ipc_mem_base + AM33XX_CONTROL_M3_TXEV_EOI);  in am33xx_txev_enable()
242 static void wkup_m3_ctrl_ipc_write(struct wkup_m3_ipc *m3_ipc,  in wkup_m3_ctrl_ipc_write()  argument
249 	writel(val, m3_ipc->ipc_mem_base +  in wkup_m3_ctrl_ipc_write()
253 static unsigned int wkup_m3_ctrl_ipc_read(struct wkup_m3_ipc *m3_ipc,  in wkup_m3_ctrl_ipc_read()  argument
260 	return readl(m3_ipc->ipc_mem_base +  in wkup_m3_ctrl_ipc_read()
264 static int wkup_m3_fw_version_read(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_fw_version_read()  argument
268 	val = wkup_m3_ctrl_ipc_read(m3_ipc, 2);  in wkup_m3_fw_version_read()
275 	struct wkup_m3_ipc *m3_ipc = ipc_data;  in wkup_m3_txev_handler()  local
276 	struct device *dev = m3_ipc->dev;  in wkup_m3_txev_handler()
279 	am33xx_txev_eoi(m3_ipc);  in wkup_m3_txev_handler()
281 	switch (m3_ipc->state) {  in wkup_m3_txev_handler()
283 		ver = wkup_m3_fw_version_read(m3_ipc);  in wkup_m3_txev_handler()
293 		m3_ipc->state = M3_STATE_INITED;  in wkup_m3_txev_handler()
294 		wkup_m3_init_scale_data(m3_ipc, dev);  in wkup_m3_txev_handler()
295 		complete(&m3_ipc->sync_complete);  in wkup_m3_txev_handler()
298 		m3_ipc->state = M3_STATE_INITED;  in wkup_m3_txev_handler()
299 		complete(&m3_ipc->sync_complete);  in wkup_m3_txev_handler()
302 		complete(&m3_ipc->sync_complete);  in wkup_m3_txev_handler()
308 	am33xx_txev_enable(m3_ipc);  in wkup_m3_txev_handler()
313 static int wkup_m3_ping(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ping()  argument
315 	struct device *dev = m3_ipc->dev;  in wkup_m3_ping()
318 	if (!m3_ipc->mbox) {  in wkup_m3_ping()
331 	ret = mbox_send_message(m3_ipc->mbox, NULL);  in wkup_m3_ping()
338 	ret = wait_for_completion_timeout(&m3_ipc->sync_complete,  in wkup_m3_ping()
342 		m3_ipc->state = M3_STATE_UNKNOWN;  in wkup_m3_ping()
346 	mbox_client_txdone(m3_ipc->mbox, 0);  in wkup_m3_ping()
350 static int wkup_m3_ping_noirq(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ping_noirq()  argument
352 	struct device *dev = m3_ipc->dev;  in wkup_m3_ping_noirq()
355 	if (!m3_ipc->mbox) {  in wkup_m3_ping_noirq()
361 	ret = mbox_send_message(m3_ipc->mbox, NULL);  in wkup_m3_ping_noirq()
368 	mbox_client_txdone(m3_ipc->mbox, 0);  in wkup_m3_ping_noirq()
372 static int wkup_m3_is_available(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_is_available()  argument
374 	return ((m3_ipc->state != M3_STATE_RESET) &&  in wkup_m3_is_available()
375 		(m3_ipc->state != M3_STATE_UNKNOWN));  in wkup_m3_is_available()
378 static void wkup_m3_set_vtt_gpio(struct wkup_m3_ipc *m3_ipc, int gpio)  in wkup_m3_set_vtt_gpio()  argument
380 	m3_ipc->vtt_conf = (1 << IPC_VTT_STAT_SHIFT) |  in wkup_m3_set_vtt_gpio()
384 static void wkup_m3_set_io_isolation(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_set_io_isolation()  argument
386 	m3_ipc->isolation_conf = (1 << IPC_IO_ISOLATION_STAT_SHIFT);  in wkup_m3_set_io_isolation()
398 static void wkup_m3_set_mem_type(struct wkup_m3_ipc *m3_ipc, int mem_type)  in wkup_m3_set_mem_type()  argument
400 	m3_ipc->mem_type = mem_type;  in wkup_m3_set_mem_type()
408 static void wkup_m3_set_resume_address(struct wkup_m3_ipc *m3_ipc, void *addr)  in wkup_m3_set_resume_address()  argument
410 	m3_ipc->resume_addr = (unsigned long)addr;  in wkup_m3_set_resume_address()
421 static int wkup_m3_request_pm_status(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_request_pm_status()  argument
426 	val = wkup_m3_ctrl_ipc_read(m3_ipc, 1);  in wkup_m3_request_pm_status()
442 static int wkup_m3_prepare_low_power(struct wkup_m3_ipc *m3_ipc, int state)  in wkup_m3_prepare_low_power()  argument
444 	struct device *dev = m3_ipc->dev;  in wkup_m3_prepare_low_power()
448 	if (!wkup_m3_is_available(m3_ipc))  in wkup_m3_prepare_low_power()
454 		wkup_m3_ctrl_ipc_write(m3_ipc, m3_ipc->volt_scale_offsets, 5);  in wkup_m3_prepare_low_power()
458 		wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 5);  in wkup_m3_prepare_low_power()
462 		wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 5);  in wkup_m3_prepare_low_power()
469 	wkup_m3_ctrl_ipc_write(m3_ipc, m3_ipc->resume_addr, 0);  in wkup_m3_prepare_low_power()
470 	wkup_m3_ctrl_ipc_write(m3_ipc, m3_power_state, 1);  in wkup_m3_prepare_low_power()
471 	wkup_m3_ctrl_ipc_write(m3_ipc, m3_ipc->mem_type |  in wkup_m3_prepare_low_power()
472 			       m3_ipc->vtt_conf |  in wkup_m3_prepare_low_power()
473 			       m3_ipc->isolation_conf |  in wkup_m3_prepare_low_power()
474 			       m3_ipc->halt, 4);  in wkup_m3_prepare_low_power()
476 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 2);  in wkup_m3_prepare_low_power()
477 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 3);  in wkup_m3_prepare_low_power()
478 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 6);  in wkup_m3_prepare_low_power()
479 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 7);  in wkup_m3_prepare_low_power()
481 	m3_ipc->state = M3_STATE_MSG_FOR_LP;  in wkup_m3_prepare_low_power()
484 		ret = wkup_m3_ping_noirq(m3_ipc);  in wkup_m3_prepare_low_power()
486 		ret = wkup_m3_ping(m3_ipc);  in wkup_m3_prepare_low_power()
502 static int wkup_m3_finish_low_power(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_finish_low_power()  argument
504 	struct device *dev = m3_ipc->dev;  in wkup_m3_finish_low_power()
507 	if (!wkup_m3_is_available(m3_ipc))  in wkup_m3_finish_low_power()
510 	wkup_m3_ctrl_ipc_write(m3_ipc, IPC_CMD_RESET, 1);  in wkup_m3_finish_low_power()
511 	wkup_m3_ctrl_ipc_write(m3_ipc, DS_IPC_DEFAULT, 2);  in wkup_m3_finish_low_power()
513 	m3_ipc->state = M3_STATE_MSG_FOR_RESET;  in wkup_m3_finish_low_power()
515 	ret = wkup_m3_ping(m3_ipc);  in wkup_m3_finish_low_power()
528 static const char *wkup_m3_request_wake_src(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_request_wake_src()  argument
533 	val = wkup_m3_ctrl_ipc_read(m3_ipc, 6);  in wkup_m3_request_wake_src()
548 static void wkup_m3_set_rtc_only(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_set_rtc_only()  argument
585 void wkup_m3_ipc_put(struct wkup_m3_ipc *m3_ipc)  in wkup_m3_ipc_put()  argument
594 	struct wkup_m3_ipc *m3_ipc = arg;  in wkup_m3_rproc_boot_thread()  local
595 	struct device *dev = m3_ipc->dev;  in wkup_m3_rproc_boot_thread()
598 	init_completion(&m3_ipc->sync_complete);  in wkup_m3_rproc_boot_thread()
600 	ret = rproc_boot(m3_ipc->rproc);  in wkup_m3_rproc_boot_thread()
604 		m3_ipc_state = m3_ipc;  in wkup_m3_rproc_boot_thread()
616 	struct wkup_m3_ipc *m3_ipc;  in wkup_m3_ipc_probe()  local
619 	m3_ipc = devm_kzalloc(dev, sizeof(*m3_ipc), GFP_KERNEL);  in wkup_m3_ipc_probe()
620 	if (!m3_ipc)  in wkup_m3_ipc_probe()
623 	m3_ipc->ipc_mem_base = devm_platform_ioremap_resource(pdev, 0);  in wkup_m3_ipc_probe()
624 	if (IS_ERR(m3_ipc->ipc_mem_base))  in wkup_m3_ipc_probe()
625 		return PTR_ERR(m3_ipc->ipc_mem_base);  in wkup_m3_ipc_probe()
632 			       0, "wkup_m3_txev", m3_ipc);  in wkup_m3_ipc_probe()
638 	m3_ipc->mbox_client.dev = dev;  in wkup_m3_ipc_probe()
639 	m3_ipc->mbox_client.tx_done = NULL;  in wkup_m3_ipc_probe()
640 	m3_ipc->mbox_client.tx_prepare = NULL;  in wkup_m3_ipc_probe()
641 	m3_ipc->mbox_client.rx_callback = NULL;  in wkup_m3_ipc_probe()
642 	m3_ipc->mbox_client.tx_block = false;  in wkup_m3_ipc_probe()
643 	m3_ipc->mbox_client.knows_txdone = false;  in wkup_m3_ipc_probe()
645 	m3_ipc->mbox = mbox_request_channel(&m3_ipc->mbox_client, 0);  in wkup_m3_ipc_probe()
647 	if (IS_ERR(m3_ipc->mbox)) {  in wkup_m3_ipc_probe()
649 			PTR_ERR(m3_ipc->mbox));  in wkup_m3_ipc_probe()
650 		return PTR_ERR(m3_ipc->mbox);  in wkup_m3_ipc_probe()
666 	m3_ipc->rproc = m3_rproc;  in wkup_m3_ipc_probe()
667 	m3_ipc->dev = dev;  in wkup_m3_ipc_probe()
668 	m3_ipc->state = M3_STATE_RESET;  in wkup_m3_ipc_probe()
670 	m3_ipc->ops = &ipc_ops;  in wkup_m3_ipc_probe()
674 			wkup_m3_set_vtt_gpio(m3_ipc, temp);  in wkup_m3_ipc_probe()
680 		wkup_m3_set_io_isolation(m3_ipc);  in wkup_m3_ipc_probe()
683 				      &m3_ipc->sd_fw_name);  in wkup_m3_ipc_probe()
693 	task = kthread_run(wkup_m3_rproc_boot_thread, m3_ipc,  in wkup_m3_ipc_probe()
702 	wkup_m3_ipc_dbg_init(m3_ipc);  in wkup_m3_ipc_probe()
709 	mbox_free_channel(m3_ipc->mbox);  in wkup_m3_ipc_probe()