1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2020 MediaTek Inc.
5 * Author: ChiYuan Huang <cy_huang@richtek.com>
8 #include <linux/interrupt.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
12 #include <linux/platform_device.h>
13 #include <linux/regmap.h>
14 #include <linux/usb/tcpci.h>
15 #include <linux/usb/tcpm.h>
17 #define MT6360_REG_PHYCTRL1 0x80
18 #define MT6360_REG_PHYCTRL3 0x82
19 #define MT6360_REG_PHYCTRL7 0x86
20 #define MT6360_REG_VCONNCTRL1 0x8C
21 #define MT6360_REG_MODECTRL2 0x8F
22 #define MT6360_REG_SWRESET 0xA0
23 #define MT6360_REG_DEBCTRL1 0xA1
24 #define MT6360_REG_DRPCTRL1 0xA2
25 #define MT6360_REG_DRPCTRL2 0xA3
26 #define MT6360_REG_I2CTORST 0xBF
27 #define MT6360_REG_PHYCTRL11 0xCA
28 #define MT6360_REG_RXCTRL1 0xCE
29 #define MT6360_REG_RXCTRL2 0xCF
30 #define MT6360_REG_CTDCTRL2 0xEC
32 /* MT6360_REG_VCONNCTRL1 */
33 #define MT6360_VCONNCL_ENABLE BIT(0)
34 /* MT6360_REG_RXCTRL2 */
35 #define MT6360_OPEN40M_ENABLE BIT(7)
36 /* MT6360_REG_CTDCTRL2 */
37 #define MT6360_RPONESHOT_ENABLE BIT(6)
39 struct mt6360_tcpc_info {
40 struct tcpci_data tdata;
46 static inline int mt6360_tcpc_write16(struct regmap *regmap,
47 unsigned int reg, u16 val)
49 return regmap_raw_write(regmap, reg, &val, sizeof(u16));
52 static int mt6360_tcpc_init(struct tcpci *tcpci, struct tcpci_data *tdata)
54 struct regmap *regmap = tdata->regmap;
57 ret = regmap_write(regmap, MT6360_REG_SWRESET, 0x01);
61 /* after reset command, wait 1~2ms to wait IC action */
62 usleep_range(1000, 2000);
64 /* write all alert to masked */
65 ret = mt6360_tcpc_write16(regmap, TCPC_ALERT_MASK, 0);
69 /* config I2C timeout reset enable , and timeout to 200ms */
70 ret = regmap_write(regmap, MT6360_REG_I2CTORST, 0x8F);
74 /* config CC Detect Debounce : 26.7*val us */
75 ret = regmap_write(regmap, MT6360_REG_DEBCTRL1, 0x10);
79 /* DRP Toggle Cycle : 51.2 + 6.4*val ms */
80 ret = regmap_write(regmap, MT6360_REG_DRPCTRL1, 4);
84 /* DRP Duyt Ctrl : dcSRC: /1024 */
85 ret = mt6360_tcpc_write16(regmap, MT6360_REG_DRPCTRL2, 330);
89 /* Enable VCONN Current Limit function */
90 ret = regmap_update_bits(regmap, MT6360_REG_VCONNCTRL1, MT6360_VCONNCL_ENABLE,
91 MT6360_VCONNCL_ENABLE);
95 /* Enable cc open 40ms when pmic send vsysuv signal */
96 ret = regmap_update_bits(regmap, MT6360_REG_RXCTRL2, MT6360_OPEN40M_ENABLE,
97 MT6360_OPEN40M_ENABLE);
101 /* Enable Rpdet oneshot detection */
102 ret = regmap_update_bits(regmap, MT6360_REG_CTDCTRL2, MT6360_RPONESHOT_ENABLE,
103 MT6360_RPONESHOT_ENABLE);
108 ret = mt6360_tcpc_write16(regmap, MT6360_REG_PHYCTRL1, 0x3A70);
112 ret = regmap_write(regmap, MT6360_REG_PHYCTRL3, 0x82);
116 ret = regmap_write(regmap, MT6360_REG_PHYCTRL7, 0x36);
120 ret = mt6360_tcpc_write16(regmap, MT6360_REG_PHYCTRL11, 0x3C60);
124 ret = regmap_write(regmap, MT6360_REG_RXCTRL1, 0xE8);
128 /* Set shipping mode off, AUTOIDLE on */
129 return regmap_write(regmap, MT6360_REG_MODECTRL2, 0x7A);
132 static irqreturn_t mt6360_irq(int irq, void *dev_id)
134 struct mt6360_tcpc_info *mti = dev_id;
136 return tcpci_irq(mti->tcpci);
139 static int mt6360_tcpc_probe(struct platform_device *pdev)
141 struct mt6360_tcpc_info *mti;
144 mti = devm_kzalloc(&pdev->dev, sizeof(*mti), GFP_KERNEL);
148 mti->dev = &pdev->dev;
150 mti->tdata.regmap = dev_get_regmap(pdev->dev.parent, NULL);
151 if (!mti->tdata.regmap) {
152 dev_err(&pdev->dev, "Failed to get parent regmap\n");
156 mti->irq = platform_get_irq_byname(pdev, "PD_IRQB");
160 mti->tdata.init = mt6360_tcpc_init;
161 mti->tcpci = tcpci_register_port(&pdev->dev, &mti->tdata);
162 if (IS_ERR(mti->tcpci)) {
163 dev_err(&pdev->dev, "Failed to register tcpci port\n");
164 return PTR_ERR(mti->tcpci);
167 ret = devm_request_threaded_irq(mti->dev, mti->irq, NULL, mt6360_irq, IRQF_ONESHOT,
168 dev_name(&pdev->dev), mti);
170 dev_err(mti->dev, "Failed to register irq\n");
171 tcpci_unregister_port(mti->tcpci);
175 device_init_wakeup(&pdev->dev, true);
176 platform_set_drvdata(pdev, mti);
181 static void mt6360_tcpc_remove(struct platform_device *pdev)
183 struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev);
185 disable_irq(mti->irq);
186 tcpci_unregister_port(mti->tcpci);
189 static int __maybe_unused mt6360_tcpc_suspend(struct device *dev)
191 struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);
193 if (device_may_wakeup(dev))
194 enable_irq_wake(mti->irq);
199 static int __maybe_unused mt6360_tcpc_resume(struct device *dev)
201 struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);
203 if (device_may_wakeup(dev))
204 disable_irq_wake(mti->irq);
209 static SIMPLE_DEV_PM_OPS(mt6360_tcpc_pm_ops, mt6360_tcpc_suspend, mt6360_tcpc_resume);
211 static const struct of_device_id __maybe_unused mt6360_tcpc_of_id[] = {
212 { .compatible = "mediatek,mt6360-tcpc", },
215 MODULE_DEVICE_TABLE(of, mt6360_tcpc_of_id);
217 static struct platform_driver mt6360_tcpc_driver = {
219 .name = "mt6360-tcpc",
220 .pm = &mt6360_tcpc_pm_ops,
221 .of_match_table = mt6360_tcpc_of_id,
223 .probe = mt6360_tcpc_probe,
224 .remove_new = mt6360_tcpc_remove,
226 module_platform_driver(mt6360_tcpc_driver);
228 MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
229 MODULE_DESCRIPTION("MT6360 USB Type-C Port Controller Interface Driver");
230 MODULE_LICENSE("GPL v2");