3  * FSI hub master driver
14 #include "fsi-master.h"
25 #define FSI_MVER		0x74		/* R: master version/type */
27 #define FSI_MESRB0		0x1d0		/* R: Master error status */
50 #define FSI_MRESP_RST_MCR	0x08000000	/* Reset FSI master reg. */
56 						/* master 0 in error */
67  * FSI hub master support
69  * A hub master increases the number of potential target devices that the
70  * primary FSI master can access. For each link a primary master supports,
71  * each of those links can in turn be chained to a hub master with multiple
83 	struct fsi_master	master;  member
86 						/* master address space */
89 #define to_fsi_master_hub(m) container_of(m, struct fsi_master_hub, master)
91 static int hub_master_read(struct fsi_master *master, int link,  in hub_master_read()  argument
94 	struct fsi_master_hub *hub = to_fsi_master_hub(master);  in hub_master_read()
103 static int hub_master_write(struct fsi_master *master, int link,  in hub_master_write()  argument
106 	struct fsi_master_hub *hub = to_fsi_master_hub(master);  in hub_master_write()
115 static int hub_master_break(struct fsi_master *master, int link)  in hub_master_break()  argument
123 	return hub_master_write(master, link, 0, addr, &cmd, sizeof(cmd));  in hub_master_break()
126 static int hub_master_link_enable(struct fsi_master *master, int link)  in hub_master_link_enable()  argument
128 	struct fsi_master_hub *hub = to_fsi_master_hub(master);  in hub_master_link_enable()
177 	/* Initialize the MFSI (hub master) engine */  in hub_master_init()
206 	/* Leave enabled long enough for master logic to set up */  in hub_master_init()
226 	/* Reset the master bridge */  in hub_master_init()
269 	hub->master.dev.parent = dev;  in hub_master_probe()
270 	hub->master.dev.release = hub_master_release;  in hub_master_probe()
271 	hub->master.dev.of_node = of_node_get(dev_of_node(dev));  in hub_master_probe()
273 	hub->master.n_links = links;  in hub_master_probe()
274 	hub->master.read = hub_master_read;  in hub_master_probe()
275 	hub->master.write = hub_master_write;  in hub_master_probe()
276 	hub->master.send_break = hub_master_break;  in hub_master_probe()
277 	hub->master.link_enable = hub_master_link_enable;  in hub_master_probe()
283 	rc = fsi_master_register(&hub->master);  in hub_master_probe()
288 	 * and holds the sole reference on master.dev. This means the device  in hub_master_probe()
294 	get_device(&hub->master.dev);  in hub_master_probe()
307 	fsi_master_unregister(&hub->master);  in hub_master_remove()
309 	of_node_put(hub->master.dev.of_node);  in hub_master_remove()
312 	 * master.dev will likely be ->release()ed after this, which free()s  in hub_master_remove()
315 	put_device(&hub->master.dev);  in hub_master_remove()
331 		.name = "fsi-master-hub",