106 #define pch_dbg(adap, fmt, arg...)  \  argument
107 	dev_dbg(adap->pch_adapter.dev.parent, "%s :" fmt, __func__, ##arg)
109 #define pch_err(adap, fmt, arg...)  \  argument
110 	dev_err(adap->pch_adapter.dev.parent, "%s :" fmt, __func__, ##arg)
202 static void pch_i2c_init(struct i2c_algo_pch_data *adap)  in pch_i2c_init()  argument
204 	void __iomem *p = adap->pch_base_address;  in pch_i2c_init()
217 	pch_setbit(adap->pch_base_address, PCH_I2CCTL, PCH_I2CCTL_I2CMEN);  in pch_i2c_init()
225 		pch_dbg(adap, "Fast mode enabled\n");  in pch_i2c_init()
241 	pch_dbg(adap,  in pch_i2c_init()
253 static s32 pch_i2c_wait_for_bus_idle(struct i2c_algo_pch_data *adap,  in pch_i2c_wait_for_bus_idle()  argument
256 	void __iomem *p = adap->pch_base_address;  in pch_i2c_wait_for_bus_idle()
262 			pch_dbg(adap, "I2CSR = %x\n", ioread32(p + PCH_I2CSR));  in pch_i2c_wait_for_bus_idle()
263 			pch_err(adap, "%s: Timeout Error.return%d\n",  in pch_i2c_wait_for_bus_idle()
265 			pch_i2c_init(adap);  in pch_i2c_wait_for_bus_idle()
289 static void pch_i2c_start(struct i2c_algo_pch_data *adap)  in pch_i2c_start()  argument
291 	void __iomem *p = adap->pch_base_address;  in pch_i2c_start()
292 	pch_dbg(adap, "I2CCTL = %x\n", ioread32(p + PCH_I2CCTL));  in pch_i2c_start()
293 	pch_setbit(adap->pch_base_address, PCH_I2CCTL, PCH_START);  in pch_i2c_start()
300 static void pch_i2c_stop(struct i2c_algo_pch_data *adap)  in pch_i2c_stop()  argument
302 	void __iomem *p = adap->pch_base_address;  in pch_i2c_stop()
303 	pch_dbg(adap, "I2CCTL = %x\n", ioread32(p + PCH_I2CCTL));  in pch_i2c_stop()
305 	pch_clrbit(adap->pch_base_address, PCH_I2CCTL, PCH_START);  in pch_i2c_stop()
308 static int pch_i2c_wait_for_check_xfer(struct i2c_algo_pch_data *adap)  in pch_i2c_wait_for_check_xfer()  argument
311 	void __iomem *p = adap->pch_base_address;  in pch_i2c_wait_for_check_xfer()
314 			(adap->pch_event_flag != 0), msecs_to_jiffies(1000));  in pch_i2c_wait_for_check_xfer()
316 		pch_err(adap, "%s:wait-event timeout\n", __func__);  in pch_i2c_wait_for_check_xfer()
317 		adap->pch_event_flag = 0;  in pch_i2c_wait_for_check_xfer()
318 		pch_i2c_stop(adap);  in pch_i2c_wait_for_check_xfer()
319 		pch_i2c_init(adap);  in pch_i2c_wait_for_check_xfer()
323 	if (adap->pch_event_flag & I2C_ERROR_MASK) {  in pch_i2c_wait_for_check_xfer()
324 		pch_err(adap, "Lost Arbitration\n");  in pch_i2c_wait_for_check_xfer()
325 		adap->pch_event_flag = 0;  in pch_i2c_wait_for_check_xfer()
326 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMAL_BIT);  in pch_i2c_wait_for_check_xfer()
327 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMIF_BIT);  in pch_i2c_wait_for_check_xfer()
328 		pch_i2c_init(adap);  in pch_i2c_wait_for_check_xfer()
332 	adap->pch_event_flag = 0;  in pch_i2c_wait_for_check_xfer()
335 		pch_dbg(adap, "Receive NACK for slave address setting\n");  in pch_i2c_wait_for_check_xfer()
346 static void pch_i2c_repstart(struct i2c_algo_pch_data *adap)  in pch_i2c_repstart()  argument
348 	void __iomem *p = adap->pch_base_address;  in pch_i2c_repstart()
349 	pch_dbg(adap, "I2CCTL = %x\n", ioread32(p + PCH_I2CCTL));  in pch_i2c_repstart()
350 	pch_setbit(adap->pch_base_address, PCH_I2CCTL, PCH_REPSTART);  in pch_i2c_repstart()
366 	struct i2c_algo_pch_data *adap = i2c_adap->algo_data;  in pch_i2c_writebytes()  local
371 	void __iomem *p = adap->pch_base_address;  in pch_i2c_writebytes()
377 	pch_setbit(adap->pch_base_address, PCH_I2CCTL, I2C_TX_MODE);  in pch_i2c_writebytes()
379 	pch_dbg(adap, "I2CCTL = %x msgs->len = %d\n", ioread32(p + PCH_I2CCTL),  in pch_i2c_writebytes()
383 		if (pch_i2c_wait_for_bus_idle(adap, BUS_IDLE_TIMEOUT) == -ETIME)  in pch_i2c_writebytes()
390 			pch_i2c_start(adap);  in pch_i2c_writebytes()
392 		rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_writebytes()
401 			pch_i2c_start(adap);  in pch_i2c_writebytes()
404 	rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_writebytes()
411 		pch_dbg(adap, "writing %x to Data register\n", buf[wrcount]);  in pch_i2c_writebytes()
413 		rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_writebytes()
417 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMCF_BIT);  in pch_i2c_writebytes()
418 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMIF_BIT);  in pch_i2c_writebytes()
423 		pch_i2c_stop(adap);  in pch_i2c_writebytes()
425 		pch_i2c_repstart(adap);  in pch_i2c_writebytes()
427 	pch_dbg(adap, "return=%d\n", wrcount);  in pch_i2c_writebytes()
436 static void pch_i2c_sendack(struct i2c_algo_pch_data *adap)  in pch_i2c_sendack()  argument
438 	void __iomem *p = adap->pch_base_address;  in pch_i2c_sendack()
439 	pch_dbg(adap, "I2CCTL = %x\n", ioread32(p + PCH_I2CCTL));  in pch_i2c_sendack()
440 	pch_clrbit(adap->pch_base_address, PCH_I2CCTL, PCH_ACK);  in pch_i2c_sendack()
447 static void pch_i2c_sendnack(struct i2c_algo_pch_data *adap)  in pch_i2c_sendnack()  argument
449 	void __iomem *p = adap->pch_base_address;  in pch_i2c_sendnack()
450 	pch_dbg(adap, "I2CCTL = %x\n", ioread32(p + PCH_I2CCTL));  in pch_i2c_sendnack()
451 	pch_setbit(adap->pch_base_address, PCH_I2CCTL, PCH_ACK);  in pch_i2c_sendnack()
460 static void pch_i2c_restart(struct i2c_algo_pch_data *adap)  in pch_i2c_restart()  argument
462 	void __iomem *p = adap->pch_base_address;  in pch_i2c_restart()
463 	pch_dbg(adap, "I2CCTL = %x\n", ioread32(p + PCH_I2CCTL));  in pch_i2c_restart()
464 	pch_setbit(adap->pch_base_address, PCH_I2CCTL, PCH_RESTART);  in pch_i2c_restart()
477 	struct i2c_algo_pch_data *adap = i2c_adap->algo_data;  in pch_i2c_readbytes()  local
482 	void __iomem *p = adap->pch_base_address;  in pch_i2c_readbytes()
489 	pch_clrbit(adap->pch_base_address, PCH_I2CCTL, I2C_TX_MODE);  in pch_i2c_readbytes()
492 		if (pch_i2c_wait_for_bus_idle(adap, BUS_IDLE_TIMEOUT) == -ETIME)  in pch_i2c_readbytes()
499 			pch_i2c_start(adap);  in pch_i2c_readbytes()
501 		rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_readbytes()
507 		pch_i2c_restart(adap);  in pch_i2c_readbytes()
509 		rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_readbytes()
521 		pch_i2c_start(adap);  in pch_i2c_readbytes()
523 	rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_readbytes()
528 		pch_i2c_stop(adap);  in pch_i2c_readbytes()
535 		pch_i2c_sendack(adap);  in pch_i2c_readbytes()
544 			rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_readbytes()
549 		pch_i2c_sendnack(adap);  in pch_i2c_readbytes()
556 		rtn = pch_i2c_wait_for_check_xfer(adap);  in pch_i2c_readbytes()
561 			pch_i2c_stop(adap);  in pch_i2c_readbytes()
563 			pch_i2c_repstart(adap);  in pch_i2c_readbytes()
576 static void pch_i2c_cb(struct i2c_algo_pch_data *adap)  in pch_i2c_cb()  argument
579 	void __iomem *p = adap->pch_base_address;  in pch_i2c_cb()
584 		adap->pch_event_flag |= I2CMAL_EVENT;  in pch_i2c_cb()
587 		adap->pch_event_flag |= I2CMCF_EVENT;  in pch_i2c_cb()
590 	pch_clrbit(adap->pch_base_address, PCH_I2CSR, sts);  in pch_i2c_cb()
592 	pch_dbg(adap, "PCH_I2CSR = %x\n", ioread32(p + PCH_I2CSR));  in pch_i2c_cb()
644 	struct i2c_algo_pch_data *adap = i2c_adap->algo_data;  in pch_i2c_xfer()  local
650 	if (adap->p_adapter_info->pch_i2c_suspended) {  in pch_i2c_xfer()
655 	pch_dbg(adap, "adap->p_adapter_info->pch_i2c_suspended is %d\n",  in pch_i2c_xfer()
656 		adap->p_adapter_info->pch_i2c_suspended);  in pch_i2c_xfer()
658 	adap->pch_i2c_xfer_in_progress = true;  in pch_i2c_xfer()
662 		pmsg->flags |= adap->pch_buff_mode_en;  in pch_i2c_xfer()
664 		pch_dbg(adap,  in pch_i2c_xfer()
676 	adap->pch_i2c_xfer_in_progress = false;	/* transfer completed */  in pch_i2c_xfer()
687 static u32 pch_i2c_func(struct i2c_adapter *adap)  in pch_i2c_func()  argument
701 static void pch_i2c_disbl_int(struct i2c_algo_pch_data *adap)  in pch_i2c_disbl_int()  argument
703 	void __iomem *p = adap->pch_base_address;  in pch_i2c_disbl_int()
705 	pch_clrbit(adap->pch_base_address, PCH_I2CCTL, NORMAL_INTR_ENBL);  in pch_i2c_disbl_int()