Cross Reference: /drivers/i2c/busses/i2c-au1550.c

Lines Matching refs:adap
55 	struct i2c_adapter adap;
70 static int wait_xfer_done(struct i2c_au1550_data *adap)
75 	for (i = 0; i < adap->xfer_timeout; i++) {
76 		if (RD(adap, PSC_SMBSTAT) & PSC_SMBSTAT_TE)
85 static int wait_ack(struct i2c_au1550_data *adap)
89 	if (wait_xfer_done(adap))
92 	stat = RD(adap, PSC_SMBEVNT);
99 static int wait_master_done(struct i2c_au1550_data *adap)
104 	for (i = 0; i < 2 * adap->xfer_timeout; i++) {
105 		if ((RD(adap, PSC_SMBEVNT) & PSC_SMBEVNT_MD) != 0)
114 do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd, int q)
119 	stat = RD(adap, PSC_SMBSTAT);
120 	WR(adap, PSC_SMBEVNT, PSC_SMBEVNT_ALLCLR);
123 		WR(adap, PSC_SMBPCR, PSC_SMBPCR_DC);
124 		while ((RD(adap, PSC_SMBPCR) & PSC_SMBPCR_DC) != 0)
139 	WR(adap, PSC_SMBTXRX, addr);
140 	WR(adap, PSC_SMBPCR, PSC_SMBPCR_MS);
141 	if (wait_ack(adap))
143 	return (q) ? wait_master_done(adap) : 0;
146 static int wait_for_rx_byte(struct i2c_au1550_data *adap, unsigned char *out)
150 	if (wait_xfer_done(adap))
153 	j =  adap->xfer_timeout * 100;
159 		if ((RD(adap, PSC_SMBSTAT) & PSC_SMBSTAT_RE) == 0)
165 	*out = RD(adap, PSC_SMBTXRX);
170 static int i2c_read(struct i2c_au1550_data *adap, unsigned char *buf,
184 		WR(adap, PSC_SMBTXRX, 0);
185 		if (wait_for_rx_byte(adap, &buf[i]))
192 	WR(adap, PSC_SMBTXRX, PSC_SMBTXRX_STP);
193 	if (wait_master_done(adap))
196 	buf[i] = (unsigned char)(RD(adap, PSC_SMBTXRX) & 0xff);
200 static int i2c_write(struct i2c_au1550_data *adap, unsigned char *buf,
212 		WR(adap, PSC_SMBTXRX, data);
213 		if (wait_ack(adap))
221 	WR(adap, PSC_SMBTXRX, data);
222 	if (wait_master_done(adap))
230 	struct i2c_au1550_data *adap = i2c_adap->algo_data;
234 	WR(adap, PSC_CTRL, PSC_CTRL_ENABLE);
238 		err = do_address(adap, p->addr, p->flags & I2C_M_RD,
243 			err = i2c_read(adap, p->buf, p->len);
245 			err = i2c_write(adap, p->buf, p->len);
253 	WR(adap, PSC_CTRL, PSC_CTRL_SUSPEND);
258 static u32 au1550_func(struct i2c_adapter *adap)
349 	priv->adap.nr = pdev->id;
350 	priv->adap.algo = &au1550_algo;
351 	priv->adap.algo_data = priv;
352 	priv->adap.dev.parent = &pdev->dev;
353 	strlcpy(priv->adap.name, "Au1xxx PSC I2C", sizeof(priv->adap.name));
358 	ret = i2c_add_numbered_adapter(&priv->adap);
380 	i2c_del_adapter(&priv->adap);