19 static void amd_mp2_c2p_mutex_lock(struct amd_i2c_common *i2c_common)  in amd_mp2_c2p_mutex_lock()  argument
21 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_c2p_mutex_lock()
25 	privdata->c2p_lock_busid = i2c_common->bus_id;  in amd_mp2_c2p_mutex_lock()
28 static void amd_mp2_c2p_mutex_unlock(struct amd_i2c_common *i2c_common)  in amd_mp2_c2p_mutex_unlock()  argument
30 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_c2p_mutex_unlock()
32 	if (unlikely(privdata->c2p_lock_busid != i2c_common->bus_id)) {  in amd_mp2_c2p_mutex_unlock()
35 			 i2c_common->bus_id, privdata->c2p_lock_busid);  in amd_mp2_c2p_mutex_unlock()
42 static int amd_mp2_cmd(struct amd_i2c_common *i2c_common,  in amd_mp2_cmd()  argument
45 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_cmd()
48 	i2c_common->reqcmd = i2c_cmd_base.s.i2c_cmd;  in amd_mp2_cmd()
57 int amd_mp2_bus_enable_set(struct amd_i2c_common *i2c_common, bool enable)  in amd_mp2_bus_enable_set()  argument
59 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_bus_enable_set()
63 		i2c_common->bus_id);  in amd_mp2_bus_enable_set()
67 	i2c_cmd_base.s.bus_id = i2c_common->bus_id;  in amd_mp2_bus_enable_set()
68 	i2c_cmd_base.s.i2c_speed = i2c_common->i2c_speed;  in amd_mp2_bus_enable_set()
70 	amd_mp2_c2p_mutex_lock(i2c_common);  in amd_mp2_bus_enable_set()
72 	return amd_mp2_cmd(i2c_common, i2c_cmd_base);  in amd_mp2_bus_enable_set()
76 static void amd_mp2_cmd_rw_fill(struct amd_i2c_common *i2c_common,  in amd_mp2_cmd_rw_fill()  argument
81 	i2c_cmd_base->s.bus_id = i2c_common->bus_id;  in amd_mp2_cmd_rw_fill()
82 	i2c_cmd_base->s.i2c_speed = i2c_common->i2c_speed;  in amd_mp2_cmd_rw_fill()
83 	i2c_cmd_base->s.slave_addr = i2c_common->msg->addr;  in amd_mp2_cmd_rw_fill()
84 	i2c_cmd_base->s.length = i2c_common->msg->len;  in amd_mp2_cmd_rw_fill()
87 int amd_mp2_rw(struct amd_i2c_common *i2c_common, enum i2c_cmd reqcmd)  in amd_mp2_rw()  argument
89 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_rw()
92 	amd_mp2_cmd_rw_fill(i2c_common, &i2c_cmd_base, reqcmd);  in amd_mp2_rw()
93 	amd_mp2_c2p_mutex_lock(i2c_common);  in amd_mp2_rw()
95 	if (i2c_common->msg->len <= 32) {  in amd_mp2_rw()
99 				    i2c_common->msg->buf,  in amd_mp2_rw()
100 				    i2c_common->msg->len);  in amd_mp2_rw()
103 		writeq((u64)i2c_common->dma_addr,  in amd_mp2_rw()
107 	return amd_mp2_cmd(i2c_common, i2c_cmd_base);  in amd_mp2_rw()
111 static void amd_mp2_pci_check_rw_event(struct amd_i2c_common *i2c_common)  in amd_mp2_pci_check_rw_event()  argument
113 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_pci_check_rw_event()
114 	int len = i2c_common->eventval.r.length;  in amd_mp2_pci_check_rw_event()
115 	u32 slave_addr = i2c_common->eventval.r.slave_addr;  in amd_mp2_pci_check_rw_event()
118 	if (unlikely(len != i2c_common->msg->len)) {  in amd_mp2_pci_check_rw_event()
121 			len, i2c_common->msg->len);  in amd_mp2_pci_check_rw_event()
125 	if (unlikely(slave_addr != i2c_common->msg->addr)) {  in amd_mp2_pci_check_rw_event()
128 			slave_addr, i2c_common->msg->addr);  in amd_mp2_pci_check_rw_event()
133 		i2c_common->cmd_success = true;  in amd_mp2_pci_check_rw_event()
136 static void __amd_mp2_process_event(struct amd_i2c_common *i2c_common)  in __amd_mp2_process_event()  argument
138 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in __amd_mp2_process_event()
139 	enum status_type sts = i2c_common->eventval.r.status;  in __amd_mp2_process_event()
140 	enum response_type res = i2c_common->eventval.r.response;  in __amd_mp2_process_event()
141 	int len = i2c_common->eventval.r.length;  in __amd_mp2_process_event()
149 	switch (i2c_common->reqcmd) {  in __amd_mp2_process_event()
152 			amd_mp2_pci_check_rw_event(i2c_common);  in __amd_mp2_process_event()
154 				memcpy_fromio(i2c_common->msg->buf,  in __amd_mp2_process_event()
164 			amd_mp2_pci_check_rw_event(i2c_common);  in __amd_mp2_process_event()
171 			i2c_common->cmd_success = true;  in __amd_mp2_process_event()
179 			i2c_common->cmd_success = true;  in __amd_mp2_process_event()
190 void amd_mp2_process_event(struct amd_i2c_common *i2c_common)  in amd_mp2_process_event()  argument
192 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_process_event()
194 	if (unlikely(i2c_common->reqcmd == i2c_none)) {  in amd_mp2_process_event()
197 			 i2c_common->bus_id);  in amd_mp2_process_event()
201 	__amd_mp2_process_event(i2c_common);  in amd_mp2_process_event()
203 	i2c_common->reqcmd = i2c_none;  in amd_mp2_process_event()
204 	amd_mp2_c2p_mutex_unlock(i2c_common);  in amd_mp2_process_event()
211 	struct amd_i2c_common *i2c_common;  in amd_mp2_irq_isr()  local
218 		i2c_common = privdata->busses[bus_id];  in amd_mp2_irq_isr()
219 		if (!i2c_common)  in amd_mp2_irq_isr()
228 			i2c_common->eventval.ul = val;  in amd_mp2_irq_isr()
229 			i2c_common->cmd_completion(i2c_common);  in amd_mp2_irq_isr()
248 void amd_mp2_rw_timeout(struct amd_i2c_common *i2c_common)  in amd_mp2_rw_timeout()  argument
250 	i2c_common->reqcmd = i2c_none;  in amd_mp2_rw_timeout()
251 	amd_mp2_c2p_mutex_unlock(i2c_common);  in amd_mp2_rw_timeout()
255 int amd_mp2_register_cb(struct amd_i2c_common *i2c_common)  in amd_mp2_register_cb()  argument
257 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_register_cb()
259 	if (i2c_common->bus_id > 1)  in amd_mp2_register_cb()
262 	if (privdata->busses[i2c_common->bus_id]) {  in amd_mp2_register_cb()
264 			"Bus %d already taken!\n", i2c_common->bus_id);  in amd_mp2_register_cb()
268 	privdata->busses[i2c_common->bus_id] = i2c_common;  in amd_mp2_register_cb()
274 int amd_mp2_unregister_cb(struct amd_i2c_common *i2c_common)  in amd_mp2_unregister_cb()  argument
276 	struct amd_mp2_dev *privdata = i2c_common->mp2_dev;  in amd_mp2_unregister_cb()
278 	privdata->busses[i2c_common->bus_id] = NULL;  in amd_mp2_unregister_cb()
388 	struct amd_i2c_common *i2c_common;  in amd_mp2_pci_suspend()  local
393 		i2c_common = privdata->busses[bus_id];  in amd_mp2_pci_suspend()
394 		if (i2c_common)  in amd_mp2_pci_suspend()
395 			i2c_common->suspend(i2c_common);  in amd_mp2_pci_suspend()
413 	struct amd_i2c_common *i2c_common;  in amd_mp2_pci_resume()  local
426 		i2c_common = privdata->busses[bus_id];  in amd_mp2_pci_resume()
427 		if (i2c_common) {  in amd_mp2_pci_resume()
428 			ret = i2c_common->resume(i2c_common);  in amd_mp2_pci_resume()