50 	struct i2c_adapter adap;  member
65 static int wait_xfer_done(struct i2c_au1550_data *adap)  in wait_xfer_done()  argument
70 	for (i = 0; i < adap->xfer_timeout; i++) {  in wait_xfer_done()
71 		if (RD(adap, PSC_SMBSTAT) & PSC_SMBSTAT_TE)  in wait_xfer_done()
80 static int wait_ack(struct i2c_au1550_data *adap)  in wait_ack()  argument
84 	if (wait_xfer_done(adap))  in wait_ack()
87 	stat = RD(adap, PSC_SMBEVNT);  in wait_ack()
94 static int wait_master_done(struct i2c_au1550_data *adap)  in wait_master_done()  argument
99 	for (i = 0; i < 2 * adap->xfer_timeout; i++) {  in wait_master_done()
100 		if ((RD(adap, PSC_SMBEVNT) & PSC_SMBEVNT_MD) != 0)  in wait_master_done()
109 do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd, int q)  in do_address()  argument
114 	stat = RD(adap, PSC_SMBSTAT);  in do_address()
115 	WR(adap, PSC_SMBEVNT, PSC_SMBEVNT_ALLCLR);  in do_address()
118 		WR(adap, PSC_SMBPCR, PSC_SMBPCR_DC);  in do_address()
119 		while ((RD(adap, PSC_SMBPCR) & PSC_SMBPCR_DC) != 0)  in do_address()
134 	WR(adap, PSC_SMBTXRX, addr);  in do_address()
135 	WR(adap, PSC_SMBPCR, PSC_SMBPCR_MS);  in do_address()
136 	if (wait_ack(adap))  in do_address()
138 	return (q) ? wait_master_done(adap) : 0;  in do_address()
141 static int wait_for_rx_byte(struct i2c_au1550_data *adap, unsigned char *out)  in wait_for_rx_byte()  argument
145 	if (wait_xfer_done(adap))  in wait_for_rx_byte()
148 	j =  adap->xfer_timeout * 100;  in wait_for_rx_byte()
154 		if ((RD(adap, PSC_SMBSTAT) & PSC_SMBSTAT_RE) == 0)  in wait_for_rx_byte()
160 	*out = RD(adap, PSC_SMBTXRX);  in wait_for_rx_byte()
165 static int i2c_read(struct i2c_au1550_data *adap, unsigned char *buf,  in i2c_read()  argument
179 		WR(adap, PSC_SMBTXRX, 0);  in i2c_read()
180 		if (wait_for_rx_byte(adap, &buf[i]))  in i2c_read()
187 	WR(adap, PSC_SMBTXRX, PSC_SMBTXRX_STP);  in i2c_read()
188 	if (wait_master_done(adap))  in i2c_read()
191 	buf[i] = (unsigned char)(RD(adap, PSC_SMBTXRX) & 0xff);  in i2c_read()
195 static int i2c_write(struct i2c_au1550_data *adap, unsigned char *buf,  in i2c_write()  argument
207 		WR(adap, PSC_SMBTXRX, data);  in i2c_write()
208 		if (wait_ack(adap))  in i2c_write()
216 	WR(adap, PSC_SMBTXRX, data);  in i2c_write()
217 	if (wait_master_done(adap))  in i2c_write()
225 	struct i2c_au1550_data *adap = i2c_adap->algo_data;  in au1550_xfer()  local
229 	WR(adap, PSC_CTRL, PSC_CTRL_ENABLE);  in au1550_xfer()
233 		err = do_address(adap, p->addr, p->flags & I2C_M_RD,  in au1550_xfer()
238 			err = i2c_read(adap, p->buf, p->len);  in au1550_xfer()
240 			err = i2c_write(adap, p->buf, p->len);  in au1550_xfer()
248 	WR(adap, PSC_CTRL, PSC_CTRL_SUSPEND);  in au1550_xfer()
253 static u32 au1550_func(struct i2c_adapter *adap)  in au1550_func()  argument
344 	priv->adap.nr = pdev->id;  in i2c_au1550_probe()
345 	priv->adap.algo = &au1550_algo;  in i2c_au1550_probe()
346 	priv->adap.algo_data = priv;  in i2c_au1550_probe()
347 	priv->adap.dev.parent = &pdev->dev;  in i2c_au1550_probe()
348 	strlcpy(priv->adap.name, "Au1xxx PSC I2C", sizeof(priv->adap.name));  in i2c_au1550_probe()
353 	ret = i2c_add_numbered_adapter(&priv->adap);  in i2c_au1550_probe()
374 	i2c_del_adapter(&priv->adap);  in i2c_au1550_remove()