1 // SPDX-License-Identifier: GPL-2.0+
30 #define MXC_W1_CONTROL_WR(x)	BIT(5 - (x))
59 	u16 *ctrl_addr = &pdata->regs->control;  in mxc_w1_touch_bit()
67 	while (timeout_cnt--) {  in mxc_w1_touch_bit()
80 	struct mxc_w1_regs *regs = pdata->regs;  in mxc_w1_read_byte()
93 	readw(&regs->tx_rx);  in mxc_w1_read_byte()
94 	writew(0xFF, &regs->tx_rx);  in mxc_w1_read_byte()
98 		status = readw(&regs->interrupt);  in mxc_w1_read_byte()
101 	return (u8)readw(&regs->tx_rx);  in mxc_w1_read_byte()
107 	struct mxc_w1_regs *regs = pdata->regs;  in mxc_w1_write_byte()
119 	readw(&regs->tx_rx);  in mxc_w1_write_byte()
120 	writew(byte, &regs->tx_rx);  in mxc_w1_write_byte()
124 		status = readw(&regs->interrupt);  in mxc_w1_write_byte()
133 	writew(MXC_W1_CONTROL_RPP, &pdata->regs->control);  in mxc_w1_reset()
136 		reg_val = readw(&pdata->regs->control);  in mxc_w1_reset()
173 		return -EINVAL;  in mxc_w1_ofdata_to_platdata()
175 	pdata->regs = (struct mxc_w1_regs *)addr;  in mxc_w1_ofdata_to_platdata()
184 	unsigned int clkdiv;  in mxc_w1_probe()  local
189 		return -EINVAL;  in mxc_w1_probe()
192 	clkdiv = clkrate / 1000000;  in mxc_w1_probe()
193 	clkrate /= clkdiv;  in mxc_w1_probe()
196 		return -EINVAL;  in mxc_w1_probe()
199 	writew(clkdiv - 1, &pdata->regs->time_divider);  in mxc_w1_probe()
212 	{ .compatible = "fsl,imx21-owire", .data = 1 },
213 	{ .compatible = "fsl,imx27-owire", .data = 1 },
214 	{ .compatible = "fsl,imx31-owire", .data = 1 },
215 	{ .compatible = "fsl,imx51-owire", .data = 1 },
217 	{ .compatible = "fsl,imx25-owire", .data = 2 },
218 	{ .compatible = "fsl,imx35-owire", .data = 2 },
219 	{ .compatible = "fsl,imx50-owire", .data = 2 },
220 	{ .compatible = "fsl,imx53-owire", .data = 2 },