1 // SPDX-License-Identifier: GPL-2.0
12 #include <linux/i2c.h>
31 MODULE_DEVICE_TABLE(i2c, isp1301_id);
41 static int __isp1301_write(struct isp1301 *isp, u8 reg, u8 value, u8 clear)  in __isp1301_write()  argument
43 	return i2c_smbus_write_byte_data(isp->client, reg | clear, value);  in __isp1301_write()
46 static int isp1301_write(struct isp1301 *isp, u8 reg, u8 value)  in isp1301_write()  argument
48 	return __isp1301_write(isp, reg, value, 0);  in isp1301_write()
51 static int isp1301_clear(struct isp1301 *isp, u8 reg, u8 value)  in isp1301_clear()  argument
53 	return __isp1301_write(isp, reg, value, ISP1301_I2C_REG_CLEAR_ADDR);  in isp1301_clear()
58 	struct isp1301 *isp = phy_to_isp(phy);  in isp1301_phy_init()  local
61 	isp1301_clear(isp, ISP1301_I2C_MODE_CONTROL_1, MC1_UART_EN);  in isp1301_phy_init()
62 	isp1301_clear(isp, ISP1301_I2C_MODE_CONTROL_1, ~MC1_SPEED_REG);  in isp1301_phy_init()
63 	isp1301_write(isp, ISP1301_I2C_MODE_CONTROL_1, MC1_SPEED_REG);  in isp1301_phy_init()
64 	isp1301_clear(isp, ISP1301_I2C_MODE_CONTROL_2, ~0);  in isp1301_phy_init()
65 	isp1301_write(isp, ISP1301_I2C_MODE_CONTROL_2, (MC2_BI_DI | MC2_PSW_EN  in isp1301_phy_init()
68 	isp1301_clear(isp, ISP1301_I2C_OTG_CONTROL_1, ~0);  in isp1301_phy_init()
69 	isp1301_write(isp, ISP1301_I2C_MODE_CONTROL_1, MC1_DAT_SE0);  in isp1301_phy_init()
70 	isp1301_write(isp, ISP1301_I2C_OTG_CONTROL_1, (OTG1_DM_PULLDOWN  in isp1301_phy_init()
72 	isp1301_clear(isp, ISP1301_I2C_OTG_CONTROL_1, (OTG1_DM_PULLUP  in isp1301_phy_init()
76 	isp1301_clear(isp, ISP1301_I2C_INTERRUPT_LATCH, ~0);  in isp1301_phy_init()
77 	isp1301_clear(isp, ISP1301_I2C_INTERRUPT_FALLING, ~0);  in isp1301_phy_init()
78 	isp1301_clear(isp, ISP1301_I2C_INTERRUPT_RISING, ~0);  in isp1301_phy_init()
85 	struct isp1301 *isp = phy_to_isp(phy);  in isp1301_phy_set_vbus()  local
88 		isp1301_write(isp, ISP1301_I2C_OTG_CONTROL_1, OTG1_VBUS_DRV);  in isp1301_phy_set_vbus()
90 		isp1301_clear(isp, ISP1301_I2C_OTG_CONTROL_1, OTG1_VBUS_DRV);  in isp1301_phy_set_vbus()
97 	struct isp1301 *isp;  in isp1301_probe()  local
100 	isp = devm_kzalloc(&client->dev, sizeof(*isp), GFP_KERNEL);  in isp1301_probe()
101 	if (!isp)  in isp1301_probe()
102 		return -ENOMEM;  in isp1301_probe()
104 	isp->client = client;  in isp1301_probe()
105 	mutex_init(&isp->mutex);  in isp1301_probe()
107 	phy = &isp->phy;  in isp1301_probe()
108 	phy->dev = &client->dev;  in isp1301_probe()
109 	phy->label = DRV_NAME;  in isp1301_probe()
110 	phy->init = isp1301_phy_init;  in isp1301_probe()
111 	phy->set_vbus = isp1301_phy_set_vbus;  in isp1301_probe()
112 	phy->type = USB_PHY_TYPE_USB2;  in isp1301_probe()
114 	i2c_set_clientdata(client, isp);  in isp1301_probe()
124 	struct isp1301 *isp = i2c_get_clientdata(client);  in isp1301_remove()  local
126 	usb_remove_phy(&isp->phy);  in isp1301_remove()
146 	/* reference of ISP1301 I2C node via DT */  in isp1301_get_client()
151 	/* non-DT: only one ISP1301 chip supported */  in isp1301_get_client()