40 static int WaitForXfer(struct s3c24x0_i2c *i2c)  in WaitForXfer()  argument
45 		if (readl(&i2c->iiccon) & I2CCON_IRPND)  in WaitForXfer()
46 			return (readl(&i2c->iicstat) & I2CSTAT_NACK) ?  in WaitForXfer()
53 static void read_write_byte(struct s3c24x0_i2c *i2c)  in read_write_byte()  argument
55 	clrbits_le32(&i2c->iiccon, I2CCON_IRPND);  in read_write_byte()
58 static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd)  in i2c_ch_init()  argument
76 	writel((div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0), &i2c->iiccon);  in i2c_ch_init()
79 	writel(0, &i2c->iicstat);  in i2c_ch_init()
80 	writel(slaveadd, &i2c->iicadd);  in i2c_ch_init()
82 	writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat);  in i2c_ch_init()
104 static int i2c_transfer(struct s3c24x0_i2c *i2c,  in i2c_transfer()  argument
121 	while (readl(&i2c->iicstat) & I2CSTAT_BSY) {  in i2c_transfer()
126 	writel(readl(&i2c->iiccon) | I2CCON_ACKGEN, &i2c->iiccon);  in i2c_transfer()
129 	writel(chip, &i2c->iicds);  in i2c_transfer()
132 		       &i2c->iicstat);  in i2c_transfer()
135 		       &i2c->iicstat);  in i2c_transfer()
138 	result = WaitForXfer(i2c);  in i2c_transfer()
145 			writel(addr[i++], &i2c->iicds);  in i2c_transfer()
146 			read_write_byte(i2c);  in i2c_transfer()
147 			result = WaitForXfer(i2c);  in i2c_transfer()
157 			writel(data[i++], &i2c->iicds);  in i2c_transfer()
158 			read_write_byte(i2c);  in i2c_transfer()
159 			result = WaitForXfer(i2c);  in i2c_transfer()
169 			writel(chip, &i2c->iicds);  in i2c_transfer()
173 				&i2c->iicstat);  in i2c_transfer()
174 			read_write_byte(i2c);  in i2c_transfer()
175 			result = WaitForXfer(i2c);  in i2c_transfer()
184 				writel(readl(&i2c->iiccon)  in i2c_transfer()
186 				       &i2c->iiccon);  in i2c_transfer()
187 			read_write_byte(i2c);  in i2c_transfer()
188 			result = WaitForXfer(i2c);  in i2c_transfer()
189 			data[i++] = readl(&i2c->iicds);  in i2c_transfer()
203 	writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->iicstat);  in i2c_transfer()
204 	read_write_byte(i2c);  in i2c_transfer()
230 	struct s3c24x0_i2c *i2c = i2c_bus->regs;  in s3c24x0_do_msg()  local
237 		setbits_le32(&i2c->iiccon, I2CCON_ACKGEN);  in s3c24x0_do_msg()
241 	writel(addr, &i2c->iicds);  in s3c24x0_do_msg()
247 	writel(status, &i2c->iicstat);  in s3c24x0_do_msg()
249 		read_write_byte(i2c);  in s3c24x0_do_msg()
252 	ret = WaitForXfer(i2c);  in s3c24x0_do_msg()
260 				clrbits_le32(&i2c->iiccon, I2CCON_ACKGEN);  in s3c24x0_do_msg()
261 			read_write_byte(i2c);  in s3c24x0_do_msg()
262 			ret = WaitForXfer(i2c);  in s3c24x0_do_msg()
263 			msg->buf[i] = readl(&i2c->iicds);  in s3c24x0_do_msg()
269 			writel(msg->buf[i], &i2c->iicds);  in s3c24x0_do_msg()
270 			read_write_byte(i2c);  in s3c24x0_do_msg()
271 			ret = WaitForXfer(i2c);  in s3c24x0_do_msg()
283 	struct s3c24x0_i2c *i2c = i2c_bus->regs;  in s3c24x0_i2c_xfer()  local
288 	while (readl(&i2c->iicstat) & I2CSTAT_BSY) {  in s3c24x0_i2c_xfer()
299 	writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->iicstat);  in s3c24x0_i2c_xfer()
300 	read_write_byte(i2c);  in s3c24x0_i2c_xfer()