43 static inline unsigned int ssi_wakein(struct hsi_port *port)  in ssi_wakein()  argument
45 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_wakein()
50 static void ssi_debug_remove_port(struct hsi_port *port)  in ssi_debug_remove_port()  argument
52 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_debug_remove_port()
59 	struct hsi_port *port = m->private;  in ssi_debug_port_show()  local
60 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_debug_port_show()
61 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_debug_port_show()
68 		seq_printf(m, "CAWAKE\t\t: %d\n", ssi_wakein(port));  in ssi_debug_port_show()
70 				readl(base + SSI_WAKE_REG(port->num)));  in ssi_debug_port_show()
72 			readl(base + SSI_MPU_ENABLE_REG(port->num, 0)));  in ssi_debug_port_show()
74 			readl(base + SSI_MPU_STATUS_REG(port->num, 0)));  in ssi_debug_port_show()
146 	struct hsi_port *port = data;  in ssi_div_get()  local
147 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_div_get()
158 	struct hsi_port *port = data;  in ssi_div_set()  local
159 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_div_set()
177 	struct hsi_port *port = to_hsi_port(omap_port->dev);  in ssi_debug_add_port()  local
183 	debugfs_create_file("regs", S_IRUGO, dir, port, &ssi_port_regs_fops);  in ssi_debug_add_port()
187 	debugfs_create_file("divisor", S_IRUGO | S_IWUSR, dir, port,  in ssi_debug_add_port()
197 	struct hsi_port *port = hsi_get_port(msg->cl);  in ssi_claim_lch()  local
198 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_claim_lch()
214 	struct hsi_port *port = hsi_get_port(msg->cl);  in ssi_start_dma()  local
215 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_start_dma()
216 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_start_dma()
236 		ccr = msg->channel + 0x10 + (port->num * 8); /* Sync */  in ssi_start_dma()
252 		ccr = (msg->channel + 1 + (port->num * 8)) & 0xf; /* Sync */  in ssi_start_dma()
285 	struct hsi_port *port = hsi_get_port(msg->cl);  in ssi_start_pio()  local
286 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_start_pio()
287 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_start_pio()
299 	dev_dbg(&port->device, "Single %s transfer\n",  in ssi_start_pio()
301 	val |= readl(omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_start_pio()
302 	writel(val, omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_start_pio()
330 	struct hsi_port *port = hsi_get_port(msg->cl);  in ssi_async_break()  local
331 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_async_break()
332 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_async_break()
353 					SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_async_break()
355 			omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_async_break()
368 	struct hsi_port *port = hsi_get_port(msg->cl);  in ssi_async()  local
369 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_async()
397 	dev_dbg(&port->device, "msg status %d ttype %d ch %d\n",  in ssi_async()
441 	struct hsi_port *port = to_hsi_port(cl->device.parent);  in ssi_setup()  local
442 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_setup()
443 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_setup()
505 	struct hsi_port *port = hsi_get_port(cl);  in ssi_flush()  local
506 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_flush()
507 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_flush()
520 		if (!msg || (port != hsi_get_port(msg->cl)))  in ssi_flush()
539 	writel_relaxed(0, omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_flush()
541 			omap_ssi->sys + SSI_MPU_STATUS_REG(port->num, 0));  in ssi_flush()
561 	struct hsi_port *port = hsi_get_port(cl);  in ssi_start_tx()  local
562 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_start_tx()
563 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_start_tx()
566 	dev_dbg(&port->device, "Wake out high %d\n", omap_port->wk_refcount);  in ssi_start_tx()
574 	writel(SSI_WAKE(0), omap_ssi->sys + SSI_SET_WAKE_REG(port->num));  in ssi_start_tx()
582 	struct hsi_port *port = hsi_get_port(cl);  in ssi_stop_tx()  local
583 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_stop_tx()
584 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_stop_tx()
587 	dev_dbg(&port->device, "Wake out low %d\n", omap_port->wk_refcount);  in ssi_stop_tx()
595 	writel(SSI_WAKE(0), omap_ssi->sys + SSI_CLEAR_WAKE_REG(port->num));  in ssi_stop_tx()
626 	struct hsi_port *port = hsi_get_port(cl);  in ssi_cleanup_queues()  local
627 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_cleanup_queues()
628 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_cleanup_queues()
677 	tmp = readl(omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_cleanup_queues()
679 	writel_relaxed(tmp, omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_cleanup_queues()
681 		SSI_MPU_STATUS_REG(port->num, 0));  in ssi_cleanup_queues()
687 	struct hsi_port *port = hsi_get_port(cl);  in ssi_cleanup_gdd()  local
688 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_cleanup_gdd()
726 	struct hsi_port *port = hsi_get_port(cl);  in ssi_release()  local
727 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_release()
728 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_release()
738 	if (port->claimed <= 1) {  in ssi_release()
762 static void ssi_error(struct hsi_port *port)  in ssi_error()  argument
764 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_error()
765 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_error()
775 	dev_err(&port->device, "SSI error: 0x%02x\n", err);  in ssi_error()
777 		dev_dbg(&port->device, "spurious SSI error ignored!\n");  in ssi_error()
796 	tmp = readl(omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_error()
798 	writel_relaxed(tmp, omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_error()
802 			omap_ssi->sys + SSI_MPU_STATUS_REG(port->num, 0));  in ssi_error()
820 static void ssi_break_complete(struct hsi_port *port)  in ssi_break_complete()  argument
822 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_break_complete()
823 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_break_complete()
829 	dev_dbg(&port->device, "HWBREAK received\n");  in ssi_break_complete()
832 	val = readl(omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_break_complete()
834 	writel_relaxed(val, omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_break_complete()
837 			omap_ssi->sys + SSI_MPU_STATUS_REG(port->num, 0));  in ssi_break_complete()
850 static void ssi_pio_complete(struct hsi_port *port, struct list_head *queue)  in ssi_pio_complete()  argument
852 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_pio_complete()
854 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_pio_complete()
878 		dev_dbg(&port->device, "ch %d ttype %d 0x%08x\n", msg->channel,  in ssi_pio_complete()
891 					SSI_MPU_STATUS_REG(port->num, 0));  in ssi_pio_complete()
899 	reg = readl(omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_pio_complete()
905 	writel_relaxed(reg, omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_pio_complete()
906 	writel_relaxed(val, omap_ssi->sys + SSI_MPU_STATUS_REG(port->num, 0));  in ssi_pio_complete()
915 	struct hsi_port *port = (struct hsi_port *)ssi_port;  in ssi_pio_tasklet()  local
916 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_pio_tasklet()
917 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_pio_tasklet()
924 	status_reg = readl(sys + SSI_MPU_STATUS_REG(port->num, 0));  in ssi_pio_tasklet()
925 	status_reg &= readl(sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_pio_tasklet()
929 			ssi_pio_complete(port, &omap_port->txqueue[ch]);  in ssi_pio_tasklet()
931 			ssi_pio_complete(port, &omap_port->rxqueue[ch]);  in ssi_pio_tasklet()
934 		ssi_break_complete(port);  in ssi_pio_tasklet()
936 		ssi_error(port);  in ssi_pio_tasklet()
938 	status_reg = readl(sys + SSI_MPU_STATUS_REG(port->num, 0));  in ssi_pio_tasklet()
939 	status_reg &= readl(sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_pio_tasklet()
948 static irqreturn_t ssi_pio_isr(int irq, void *port)  in ssi_pio_isr()  argument
950 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_pio_isr()
960 	struct hsi_port *port = (struct hsi_port *)ssi_port;  in ssi_wake_tasklet()  local
961 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_wake_tasklet()
962 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_wake_tasklet()
965 	if (ssi_wakein(port)) {  in ssi_wake_tasklet()
982 				omap_ssi->sys + SSI_SET_WAKE_REG(port->num));  in ssi_wake_tasklet()
984 		hsi_event(port, HSI_EVENT_START_RX);  in ssi_wake_tasklet()
989 				omap_ssi->sys + SSI_CLEAR_WAKE_REG(port->num));  in ssi_wake_tasklet()
991 		hsi_event(port, HSI_EVENT_STOP_RX);  in ssi_wake_tasklet()
1010 static int __init ssi_port_irq(struct hsi_port *port,  in ssi_port_irq()  argument
1013 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_port_irq()
1018 		dev_err(&port->device, "Port IRQ resource missing\n");  in ssi_port_irq()
1023 							(unsigned long)port);  in ssi_port_irq()
1024 	err = devm_request_irq(&port->device, omap_port->irq, ssi_pio_isr,  in ssi_port_irq()
1025 						0, "mpu_irq0", port);  in ssi_port_irq()
1027 		dev_err(&port->device, "Request IRQ %d failed (%d)\n",  in ssi_port_irq()
1032 static int __init ssi_wake_irq(struct hsi_port *port,  in ssi_wake_irq()  argument
1035 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_wake_irq()
1048 							(unsigned long)port);  in ssi_wake_irq()
1049 	err = devm_request_irq(&port->device, cawake_irq, ssi_wake_isr,  in ssi_wake_irq()
1051 							"cawake", port);  in ssi_wake_irq()
1053 		dev_err(&port->device, "Request Wake in IRQ %d failed %d\n",  in ssi_wake_irq()
1057 		dev_err(&port->device, "Enable wake on the wakeline in irq %d failed %d\n",  in ssi_wake_irq()
1077 	struct hsi_port *port = platform_get_drvdata(pd);  in ssi_port_get_iomem()  local
1087 	ioarea = devm_request_mem_region(&port->device, mem->start,  in ssi_port_get_iomem()
1094 	base = devm_ioremap(&port->device, mem->start, resource_size(mem));  in ssi_port_get_iomem()
1110 	struct hsi_port *port;  in ssi_port_probe()  local
1125 	if (!ssi->port || !omap_ssi->port) {  in ssi_port_probe()
1132 	for (port_id = 0; port_id < ssi->num_ports && omap_ssi->port[port_id];  in ssi_port_probe()
1142 	port = ssi->port[port_id];  in ssi_port_probe()
1158 	err = devm_gpio_request_one(&port->device, cawake_gpio, GPIOF_DIR_IN,  in ssi_port_probe()
1167 	omap_port = devm_kzalloc(&port->device, sizeof(*omap_port), GFP_KERNEL);  in ssi_port_probe()
1177 	port->async	= ssi_async;  in ssi_port_probe()
1178 	port->setup	= ssi_setup;  in ssi_port_probe()
1179 	port->flush	= ssi_flush;  in ssi_port_probe()
1180 	port->start_tx	= ssi_start_tx;  in ssi_port_probe()
1181 	port->stop_tx	= ssi_stop_tx;  in ssi_port_probe()
1182 	port->release	= ssi_release;  in ssi_port_probe()
1183 	hsi_port_set_drvdata(port, omap_port);  in ssi_port_probe()
1184 	omap_ssi->port[port_id] = omap_port;  in ssi_port_probe()
1186 	platform_set_drvdata(pd, port);  in ssi_port_probe()
1197 	err = ssi_port_irq(port, pd);  in ssi_port_probe()
1200 	err = ssi_wake_irq(port, pd);  in ssi_port_probe()
1207 	omap_port->dev = &port->device;  in ssi_port_probe()
1220 	hsi_add_clients_from_dt(port, np);  in ssi_port_probe()
1233 	struct hsi_port *port = platform_get_drvdata(pd);  in ssi_port_remove()  local
1234 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in ssi_port_remove()
1235 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_port_remove()
1239 	ssi_debug_remove_port(port);  in ssi_port_remove()
1242 	hsi_port_unregister_clients(port);  in ssi_port_remove()
1247 	port->async	= hsi_dummy_msg;  in ssi_port_remove()
1248 	port->setup	= hsi_dummy_cl;  in ssi_port_remove()
1249 	port->flush	= hsi_dummy_cl;  in ssi_port_remove()
1250 	port->start_tx	= hsi_dummy_cl;  in ssi_port_remove()
1251 	port->stop_tx	= hsi_dummy_cl;  in ssi_port_remove()
1252 	port->release	= hsi_dummy_cl;  in ssi_port_remove()
1254 	omap_ssi->port[omap_port->port_id] = NULL;  in ssi_port_remove()
1265 	struct hsi_port *port = to_hsi_port(omap_port->dev);  in ssi_save_port_ctx()  local
1266 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_save_port_ctx()
1270 					SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_save_port_ctx()
1277 	struct hsi_port *port = to_hsi_port(omap_port->dev);  in ssi_restore_port_ctx()  local
1278 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in ssi_restore_port_ctx()
1283 			omap_ssi->sys + SSI_MPU_ENABLE_REG(port->num, 0));  in ssi_restore_port_ctx()
1324 	struct hsi_port *port = dev_get_drvdata(dev);  in omap_ssi_port_runtime_suspend()  local
1325 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in omap_ssi_port_runtime_suspend()
1326 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in omap_ssi_port_runtime_suspend()
1342 	struct hsi_port *port = dev_get_drvdata(dev);  in omap_ssi_port_runtime_resume()  local
1343 	struct omap_ssi_port *omap_port = hsi_port_drvdata(port);  in omap_ssi_port_runtime_resume()
1344 	struct hsi_controller *ssi = to_hsi_controller(port->device.parent);  in omap_ssi_port_runtime_resume()