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@@ -0,0 +1,605 @@
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+/*
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+ * Driver for Microchip USB251xB USB 2.0 Hi-Speed Hub Controller
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+ * Configuration via SMBus.
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+ *
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+ * Copyright (c) 2017 SKIDATA AG
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+ *
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+ * This work is based on the USB3503 driver by Dongjin Kim and
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+ * a not-accepted patch by Fabien Lahoudere, see:
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+ * https://patchwork.kernel.org/patch/9257715/
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ */
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+
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+#include <linux/delay.h>
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+#include <linux/gpio.h>
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+#include <linux/i2c.h>
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+#include <linux/module.h>
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+#include <linux/nls.h>
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+#include <linux/of_device.h>
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+#include <linux/of_gpio.h>
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+#include <linux/slab.h>
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+
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+/* Internal Register Set Addresses & Default Values acc. to DS00001692C */
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+#define USB251XB_ADDR_VENDOR_ID_LSB 0x00
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+#define USB251XB_ADDR_VENDOR_ID_MSB 0x01
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+#define USB251XB_DEF_VENDOR_ID 0x0424
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+
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+#define USB251XB_ADDR_PRODUCT_ID_LSB 0x02
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+#define USB251XB_ADDR_PRODUCT_ID_MSB 0x03
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+#define USB251XB_DEF_PRODUCT_ID_12 0x2512 /* USB2512B/12Bi */
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+#define USB251XB_DEF_PRODUCT_ID_13 0x2513 /* USB2513B/13Bi */
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+#define USB251XB_DEF_PRODUCT_ID_14 0x2514 /* USB2514B/14Bi */
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+
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+#define USB251XB_ADDR_DEVICE_ID_LSB 0x04
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+#define USB251XB_ADDR_DEVICE_ID_MSB 0x05
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+#define USB251XB_DEF_DEVICE_ID 0x0BB3
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+
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+#define USB251XB_ADDR_CONFIG_DATA_1 0x06
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+#define USB251XB_DEF_CONFIG_DATA_1 0x9B
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+#define USB251XB_ADDR_CONFIG_DATA_2 0x07
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+#define USB251XB_DEF_CONFIG_DATA_2 0x20
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+#define USB251XB_ADDR_CONFIG_DATA_3 0x08
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+#define USB251XB_DEF_CONFIG_DATA_3 0x02
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+
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+#define USB251XB_ADDR_NON_REMOVABLE_DEVICES 0x09
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+#define USB251XB_DEF_NON_REMOVABLE_DEVICES 0x00
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+
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+#define USB251XB_ADDR_PORT_DISABLE_SELF 0x0A
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+#define USB251XB_DEF_PORT_DISABLE_SELF 0x00
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+#define USB251XB_ADDR_PORT_DISABLE_BUS 0x0B
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+#define USB251XB_DEF_PORT_DISABLE_BUS 0x00
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+
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+#define USB251XB_ADDR_MAX_POWER_SELF 0x0C
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+#define USB251XB_DEF_MAX_POWER_SELF 0x01
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+#define USB251XB_ADDR_MAX_POWER_BUS 0x0D
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+#define USB251XB_DEF_MAX_POWER_BUS 0x32
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+
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+#define USB251XB_ADDR_MAX_CURRENT_SELF 0x0E
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+#define USB251XB_DEF_MAX_CURRENT_SELF 0x01
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+#define USB251XB_ADDR_MAX_CURRENT_BUS 0x0F
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+#define USB251XB_DEF_MAX_CURRENT_BUS 0x32
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+
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+#define USB251XB_ADDR_POWER_ON_TIME 0x10
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+#define USB251XB_DEF_POWER_ON_TIME 0x32
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+
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+#define USB251XB_ADDR_LANGUAGE_ID_HIGH 0x11
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+#define USB251XB_ADDR_LANGUAGE_ID_LOW 0x12
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+#define USB251XB_DEF_LANGUAGE_ID 0x0000
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+
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+#define USB251XB_STRING_BUFSIZE 62
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+#define USB251XB_ADDR_MANUFACTURER_STRING_LEN 0x13
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+#define USB251XB_ADDR_MANUFACTURER_STRING 0x16
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+#define USB251XB_DEF_MANUFACTURER_STRING "Microchip"
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+
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+#define USB251XB_ADDR_PRODUCT_STRING_LEN 0x14
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+#define USB251XB_ADDR_PRODUCT_STRING 0x54
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+#define USB251XB_DEF_PRODUCT_STRING "USB251xB/xBi"
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+
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+#define USB251XB_ADDR_SERIAL_STRING_LEN 0x15
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+#define USB251XB_ADDR_SERIAL_STRING 0x92
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+#define USB251XB_DEF_SERIAL_STRING ""
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+
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+#define USB251XB_ADDR_BATTERY_CHARGING_ENABLE 0xD0
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+#define USB251XB_DEF_BATTERY_CHARGING_ENABLE 0x00
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+
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+#define USB251XB_ADDR_BOOST_UP 0xF6
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+#define USB251XB_DEF_BOOST_UP 0x00
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+#define USB251XB_ADDR_BOOST_X 0xF8
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+#define USB251XB_DEF_BOOST_X 0x00
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+
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+#define USB251XB_ADDR_PORT_SWAP 0xFA
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+#define USB251XB_DEF_PORT_SWAP 0x00
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+
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+#define USB251XB_ADDR_PORT_MAP_12 0xFB
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+#define USB251XB_DEF_PORT_MAP_12 0x00
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+#define USB251XB_ADDR_PORT_MAP_34 0xFC
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+#define USB251XB_DEF_PORT_MAP_34 0x00 /* USB2513B/i & USB2514B/i only */
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+
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+#define USB251XB_ADDR_STATUS_COMMAND 0xFF
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+#define USB251XB_STATUS_COMMAND_SMBUS_DOWN 0x04
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+#define USB251XB_STATUS_COMMAND_RESET 0x02
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+#define USB251XB_STATUS_COMMAND_ATTACH 0x01
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+
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+#define USB251XB_I2C_REG_SZ 0x100
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+#define USB251XB_I2C_WRITE_SZ 0x10
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+
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+#define DRIVER_NAME "usb251xb"
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+#define DRIVER_DESC "Microchip USB 2.0 Hi-Speed Hub Controller"
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+#define DRIVER_VERSION "1.0"
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+
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+struct usb251xb {
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+ struct device *dev;
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+ struct i2c_client *i2c;
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+ u8 skip_config;
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+ int gpio_reset;
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+ u16 vendor_id;
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+ u16 product_id;
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+ u16 device_id;
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+ u8 conf_data1;
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+ u8 conf_data2;
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+ u8 conf_data3;
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+ u8 non_rem_dev;
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+ u8 port_disable_sp;
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+ u8 port_disable_bp;
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+ u8 max_power_sp;
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+ u8 max_power_bp;
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+ u8 max_current_sp;
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+ u8 max_current_bp;
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+ u8 power_on_time;
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+ u16 lang_id;
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+ u8 manufacturer_len;
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+ u8 product_len;
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+ u8 serial_len;
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+ char manufacturer[USB251XB_STRING_BUFSIZE];
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+ char product[USB251XB_STRING_BUFSIZE];
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+ char serial[USB251XB_STRING_BUFSIZE];
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+ u8 bat_charge_en;
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+ u8 boost_up;
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+ u8 boost_x;
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+ u8 port_swap;
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+ u8 port_map12;
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+ u8 port_map34;
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+ u8 status;
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+};
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+
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+struct usb251xb_data {
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+ u16 product_id;
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+ char product_str[USB251XB_STRING_BUFSIZE / 2]; /* ASCII string */
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+};
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+
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+static const struct usb251xb_data usb2512b_data = {
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+ .product_id = 0x2512,
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+ .product_str = "USB2512B",
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+};
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+
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+static const struct usb251xb_data usb2512bi_data = {
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+ .product_id = 0x2512,
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+ .product_str = "USB2512Bi",
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+};
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+
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+static const struct usb251xb_data usb2513b_data = {
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+ .product_id = 0x2513,
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+ .product_str = "USB2513B",
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+};
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+
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+static const struct usb251xb_data usb2513bi_data = {
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+ .product_id = 0x2513,
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+ .product_str = "USB2513Bi",
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+};
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+
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+static const struct usb251xb_data usb2514b_data = {
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+ .product_id = 0x2514,
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+ .product_str = "USB2514B",
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+};
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+
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+static const struct usb251xb_data usb2514bi_data = {
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+ .product_id = 0x2514,
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+ .product_str = "USB2514Bi",
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+};
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+
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+static void usb251xb_reset(struct usb251xb *hub, int state)
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+{
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+ if (!gpio_is_valid(hub->gpio_reset))
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+ return;
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+
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+ gpio_set_value_cansleep(hub->gpio_reset, state);
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+
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+ /* wait for hub recovery/stabilization */
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+ if (state)
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+ usleep_range(500, 750); /* >=500us at power on */
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+ else
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+ usleep_range(1, 10); /* >=1us at power down */
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+}
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+
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+static int usb251xb_connect(struct usb251xb *hub)
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+{
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+ struct device *dev = hub->dev;
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+ int err, i;
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+ char i2c_wb[USB251XB_I2C_REG_SZ];
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+
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+ memset(i2c_wb, 0, USB251XB_I2C_REG_SZ);
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+
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+ if (hub->skip_config) {
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+ dev_info(dev, "Skip hub configuration, only attach.\n");
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+ i2c_wb[0] = 0x01;
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+ i2c_wb[1] = USB251XB_STATUS_COMMAND_ATTACH;
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+
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+ usb251xb_reset(hub, 1);
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+
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+ err = i2c_smbus_write_i2c_block_data(hub->i2c,
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+ USB251XB_ADDR_STATUS_COMMAND, 2, i2c_wb);
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+ if (err) {
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+ dev_err(dev, "attaching hub failed: %d\n", err);
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+ return err;
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+ }
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+ return 0;
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+ }
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+
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+ i2c_wb[USB251XB_ADDR_VENDOR_ID_MSB] = (hub->vendor_id >> 8) & 0xFF;
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+ i2c_wb[USB251XB_ADDR_VENDOR_ID_LSB] = hub->vendor_id & 0xFF;
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+ i2c_wb[USB251XB_ADDR_PRODUCT_ID_MSB] = (hub->product_id >> 8) & 0xFF;
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+ i2c_wb[USB251XB_ADDR_PRODUCT_ID_LSB] = hub->product_id & 0xFF;
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+ i2c_wb[USB251XB_ADDR_DEVICE_ID_MSB] = (hub->device_id >> 8) & 0xFF;
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+ i2c_wb[USB251XB_ADDR_DEVICE_ID_LSB] = hub->device_id & 0xFF;
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+ i2c_wb[USB251XB_ADDR_CONFIG_DATA_1] = hub->conf_data1;
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+ i2c_wb[USB251XB_ADDR_CONFIG_DATA_2] = hub->conf_data2;
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+ i2c_wb[USB251XB_ADDR_CONFIG_DATA_3] = hub->conf_data3;
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+ i2c_wb[USB251XB_ADDR_NON_REMOVABLE_DEVICES] = hub->non_rem_dev;
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+ i2c_wb[USB251XB_ADDR_PORT_DISABLE_SELF] = hub->port_disable_sp;
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+ i2c_wb[USB251XB_ADDR_PORT_DISABLE_BUS] = hub->port_disable_bp;
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+ i2c_wb[USB251XB_ADDR_MAX_POWER_SELF] = hub->max_power_sp;
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+ i2c_wb[USB251XB_ADDR_MAX_POWER_BUS] = hub->max_power_bp;
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+ i2c_wb[USB251XB_ADDR_MAX_CURRENT_SELF] = hub->max_current_sp;
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+ i2c_wb[USB251XB_ADDR_MAX_CURRENT_BUS] = hub->max_current_bp;
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+ i2c_wb[USB251XB_ADDR_POWER_ON_TIME] = hub->power_on_time;
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+ i2c_wb[USB251XB_ADDR_LANGUAGE_ID_HIGH] = (hub->lang_id >> 8) & 0xFF;
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+ i2c_wb[USB251XB_ADDR_LANGUAGE_ID_LOW] = hub->lang_id & 0xFF;
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+ i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING_LEN] = hub->manufacturer_len;
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+ i2c_wb[USB251XB_ADDR_PRODUCT_STRING_LEN] = hub->product_len;
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+ i2c_wb[USB251XB_ADDR_SERIAL_STRING_LEN] = hub->serial_len;
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+ memcpy(&i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING], hub->manufacturer,
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+ USB251XB_STRING_BUFSIZE);
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+ memcpy(&i2c_wb[USB251XB_ADDR_SERIAL_STRING], hub->serial,
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+ USB251XB_STRING_BUFSIZE);
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+ memcpy(&i2c_wb[USB251XB_ADDR_PRODUCT_STRING], hub->product,
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+ USB251XB_STRING_BUFSIZE);
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+ i2c_wb[USB251XB_ADDR_BATTERY_CHARGING_ENABLE] = hub->bat_charge_en;
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+ i2c_wb[USB251XB_ADDR_BOOST_UP] = hub->boost_up;
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+ i2c_wb[USB251XB_ADDR_BOOST_X] = hub->boost_x;
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+ i2c_wb[USB251XB_ADDR_PORT_SWAP] = hub->port_swap;
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+ i2c_wb[USB251XB_ADDR_PORT_MAP_12] = hub->port_map12;
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+ i2c_wb[USB251XB_ADDR_PORT_MAP_34] = hub->port_map34;
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+ i2c_wb[USB251XB_ADDR_STATUS_COMMAND] = USB251XB_STATUS_COMMAND_ATTACH;
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+
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+ usb251xb_reset(hub, 1);
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+
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+ /* write registers */
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+ for (i = 0; i < (USB251XB_I2C_REG_SZ / USB251XB_I2C_WRITE_SZ); i++) {
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+ int offset = i * USB251XB_I2C_WRITE_SZ;
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+ char wbuf[USB251XB_I2C_WRITE_SZ + 1];
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+
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+ /* The first data byte transferred tells the hub how many data
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+ * bytes will follow (byte count).
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+ */
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+ wbuf[0] = USB251XB_I2C_WRITE_SZ;
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+ memcpy(&wbuf[1], &i2c_wb[offset], USB251XB_I2C_WRITE_SZ);
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+
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+ dev_dbg(dev, "writing %d byte block %d to 0x%02X\n",
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+ USB251XB_I2C_WRITE_SZ, i, offset);
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+
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+ err = i2c_smbus_write_i2c_block_data(hub->i2c, offset,
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+ USB251XB_I2C_WRITE_SZ + 1,
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+ wbuf);
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+ if (err)
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+ goto out_err;
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+ }
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+
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+ dev_info(dev, "Hub configuration was successful.\n");
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+ return 0;
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+
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+out_err:
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+ dev_err(dev, "configuring block %d failed: %d\n", i, err);
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+ return err;
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+}
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+
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+#ifdef CONFIG_OF
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+static int usb251xb_get_ofdata(struct usb251xb *hub,
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+ struct usb251xb_data *data)
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+{
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+ struct device *dev = hub->dev;
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+ struct device_node *np = dev->of_node;
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+ int len, err, i;
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+ u32 *property_u32 = NULL;
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+ const u32 *cproperty_u32;
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+ const char *cproperty_char;
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+ char str[USB251XB_STRING_BUFSIZE / 2];
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+
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+ if (!np) {
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+ dev_err(dev, "failed to get ofdata\n");
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+ return -ENODEV;
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+ }
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+
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+ if (of_get_property(np, "skip-config", NULL))
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+ hub->skip_config = 1;
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+ else
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+ hub->skip_config = 0;
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+
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+ hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0);
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+ if (hub->gpio_reset == -EPROBE_DEFER)
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+ return -EPROBE_DEFER;
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+ if (gpio_is_valid(hub->gpio_reset)) {
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+ err = devm_gpio_request_one(dev, hub->gpio_reset,
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+ GPIOF_OUT_INIT_LOW,
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+ "usb251xb reset");
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+ if (err) {
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+ dev_err(dev,
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+ "unable to request GPIO %d as reset pin (%d)\n",
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+ hub->gpio_reset, err);
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+ return err;
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+ }
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+ }
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+
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+ if (of_property_read_u16_array(np, "vendor-id", &hub->vendor_id, 1))
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+ hub->vendor_id = USB251XB_DEF_VENDOR_ID;
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+
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+ if (of_property_read_u16_array(np, "product-id",
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+ &hub->product_id, 1))
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+ hub->product_id = data->product_id;
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+
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+ if (of_property_read_u16_array(np, "device-id", &hub->device_id, 1))
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+ hub->device_id = USB251XB_DEF_DEVICE_ID;
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+
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+ hub->conf_data1 = USB251XB_DEF_CONFIG_DATA_1;
|
|
|
+ if (of_get_property(np, "self-powered", NULL)) {
|
|
|
+ hub->conf_data1 |= BIT(7);
|
|
|
+
|
|
|
+ /* Configure Over-Current sens when self-powered */
|
|
|
+ hub->conf_data1 &= ~BIT(2);
|
|
|
+ if (of_get_property(np, "ganged-sensing", NULL))
|
|
|
+ hub->conf_data1 &= ~BIT(1);
|
|
|
+ else if (of_get_property(np, "individual-sensing", NULL))
|
|
|
+ hub->conf_data1 |= BIT(1);
|
|
|
+ } else if (of_get_property(np, "bus-powered", NULL)) {
|
|
|
+ hub->conf_data1 &= ~BIT(7);
|
|
|
+
|
|
|
+ /* Disable Over-Current sense when bus-powered */
|
|
|
+ hub->conf_data1 |= BIT(2);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (of_get_property(np, "disable-hi-speed", NULL))
|
|
|
+ hub->conf_data1 |= BIT(5);
|
|
|
+
|
|
|
+ if (of_get_property(np, "multi-tt", NULL))
|
|
|
+ hub->conf_data1 |= BIT(4);
|
|
|
+ else if (of_get_property(np, "single-tt", NULL))
|
|
|
+ hub->conf_data1 &= ~BIT(4);
|
|
|
+
|
|
|
+ if (of_get_property(np, "disable-eop", NULL))
|
|
|
+ hub->conf_data1 |= BIT(3);
|
|
|
+
|
|
|
+ if (of_get_property(np, "individual-port-switching", NULL))
|
|
|
+ hub->conf_data1 |= BIT(0);
|
|
|
+ else if (of_get_property(np, "ganged-port-switching", NULL))
|
|
|
+ hub->conf_data1 &= ~BIT(0);
|
|
|
+
|
|
|
+ hub->conf_data2 = USB251XB_DEF_CONFIG_DATA_2;
|
|
|
+ if (of_get_property(np, "dynamic-power-switching", NULL))
|
|
|
+ hub->conf_data2 |= BIT(7);
|
|
|
+
|
|
|
+ if (of_get_property(np, "oc-delay-100us", NULL)) {
|
|
|
+ hub->conf_data2 &= ~BIT(5);
|
|
|
+ hub->conf_data2 &= ~BIT(4);
|
|
|
+ } else if (of_get_property(np, "oc-delay-4ms", NULL)) {
|
|
|
+ hub->conf_data2 &= ~BIT(5);
|
|
|
+ hub->conf_data2 |= BIT(4);
|
|
|
+ } else if (of_get_property(np, "oc-delay-8ms", NULL)) {
|
|
|
+ hub->conf_data2 |= BIT(5);
|
|
|
+ hub->conf_data2 &= ~BIT(4);
|
|
|
+ } else if (of_get_property(np, "oc-delay-16ms", NULL)) {
|
|
|
+ hub->conf_data2 |= BIT(5);
|
|
|
+ hub->conf_data2 |= BIT(4);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (of_get_property(np, "compound-device", NULL))
|
|
|
+ hub->conf_data2 |= BIT(3);
|
|
|
+
|
|
|
+ hub->conf_data3 = USB251XB_DEF_CONFIG_DATA_3;
|
|
|
+ if (of_get_property(np, "port-mapping-mode", NULL))
|
|
|
+ hub->conf_data3 |= BIT(3);
|
|
|
+
|
|
|
+ if (of_get_property(np, "string-support", NULL))
|
|
|
+ hub->conf_data3 |= BIT(0);
|
|
|
+
|
|
|
+ hub->non_rem_dev = USB251XB_DEF_NON_REMOVABLE_DEVICES;
|
|
|
+ cproperty_u32 = of_get_property(np, "non-removable-ports", &len);
|
|
|
+ if (cproperty_u32 && (len / sizeof(u32)) > 0) {
|
|
|
+ for (i = 0; i < len / sizeof(u32); i++) {
|
|
|
+ u32 port = be32_to_cpu(cproperty_u32[i]);
|
|
|
+
|
|
|
+ if ((port >= 1) && (port <= 4))
|
|
|
+ hub->non_rem_dev |= BIT(port);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ hub->port_disable_sp = USB251XB_DEF_PORT_DISABLE_SELF;
|
|
|
+ cproperty_u32 = of_get_property(np, "sp-disabled-ports", &len);
|
|
|
+ if (cproperty_u32 && (len / sizeof(u32)) > 0) {
|
|
|
+ for (i = 0; i < len / sizeof(u32); i++) {
|
|
|
+ u32 port = be32_to_cpu(cproperty_u32[i]);
|
|
|
+
|
|
|
+ if ((port >= 1) && (port <= 4))
|
|
|
+ hub->port_disable_sp |= BIT(port);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ hub->port_disable_bp = USB251XB_DEF_PORT_DISABLE_BUS;
|
|
|
+ cproperty_u32 = of_get_property(np, "bp-disabled-ports", &len);
|
|
|
+ if (cproperty_u32 && (len / sizeof(u32)) > 0) {
|
|
|
+ for (i = 0; i < len / sizeof(u32); i++) {
|
|
|
+ u32 port = be32_to_cpu(cproperty_u32[i]);
|
|
|
+
|
|
|
+ if ((port >= 1) && (port <= 4))
|
|
|
+ hub->port_disable_bp |= BIT(port);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF;
|
|
|
+ if (!of_property_read_u32(np, "max-sp-power", property_u32))
|
|
|
+ hub->max_power_sp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
|
|
+ 250);
|
|
|
+
|
|
|
+ hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS;
|
|
|
+ if (!of_property_read_u32(np, "max-bp-power", property_u32))
|
|
|
+ hub->max_power_bp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
|
|
+ 250);
|
|
|
+
|
|
|
+ hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF;
|
|
|
+ if (!of_property_read_u32(np, "max-sp-current", property_u32))
|
|
|
+ hub->max_current_sp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
|
|
+ 250);
|
|
|
+
|
|
|
+ hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS;
|
|
|
+ if (!of_property_read_u32(np, "max-bp-current", property_u32))
|
|
|
+ hub->max_current_bp = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
|
|
+ 250);
|
|
|
+
|
|
|
+ hub->power_on_time = USB251XB_DEF_POWER_ON_TIME;
|
|
|
+ if (!of_property_read_u32(np, "power-on-time", property_u32))
|
|
|
+ hub->power_on_time = min_t(u8, be32_to_cpu(*property_u32) / 2,
|
|
|
+ 255);
|
|
|
+
|
|
|
+ if (of_property_read_u16_array(np, "language-id", &hub->lang_id, 1))
|
|
|
+ hub->lang_id = USB251XB_DEF_LANGUAGE_ID;
|
|
|
+
|
|
|
+ cproperty_char = of_get_property(np, "manufacturer", NULL);
|
|
|
+ strlcpy(str, cproperty_char ? : USB251XB_DEF_MANUFACTURER_STRING,
|
|
|
+ sizeof(str));
|
|
|
+ hub->manufacturer_len = strlen(str) & 0xFF;
|
|
|
+ memset(hub->manufacturer, 0, USB251XB_STRING_BUFSIZE);
|
|
|
+ len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str));
|
|
|
+ len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN,
|
|
|
+ (wchar_t *)hub->manufacturer,
|
|
|
+ USB251XB_STRING_BUFSIZE);
|
|
|
+
|
|
|
+ cproperty_char = of_get_property(np, "product", NULL);
|
|
|
+ strlcpy(str, cproperty_char ? : data->product_str, sizeof(str));
|
|
|
+ hub->product_len = strlen(str) & 0xFF;
|
|
|
+ memset(hub->product, 0, USB251XB_STRING_BUFSIZE);
|
|
|
+ len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str));
|
|
|
+ len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN,
|
|
|
+ (wchar_t *)hub->product,
|
|
|
+ USB251XB_STRING_BUFSIZE);
|
|
|
+
|
|
|
+ cproperty_char = of_get_property(np, "serial", NULL);
|
|
|
+ strlcpy(str, cproperty_char ? : USB251XB_DEF_SERIAL_STRING,
|
|
|
+ sizeof(str));
|
|
|
+ hub->serial_len = strlen(str) & 0xFF;
|
|
|
+ memset(hub->serial, 0, USB251XB_STRING_BUFSIZE);
|
|
|
+ len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str));
|
|
|
+ len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN,
|
|
|
+ (wchar_t *)hub->serial,
|
|
|
+ USB251XB_STRING_BUFSIZE);
|
|
|
+
|
|
|
+ /* The following parameters are currently not exposed to devicetree, but
|
|
|
+ * may be as soon as needed.
|
|
|
+ */
|
|
|
+ hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE;
|
|
|
+ hub->boost_up = USB251XB_DEF_BOOST_UP;
|
|
|
+ hub->boost_x = USB251XB_DEF_BOOST_X;
|
|
|
+ hub->port_swap = USB251XB_DEF_PORT_SWAP;
|
|
|
+ hub->port_map12 = USB251XB_DEF_PORT_MAP_12;
|
|
|
+ hub->port_map34 = USB251XB_DEF_PORT_MAP_34;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static const struct of_device_id usb251xb_of_match[] = {
|
|
|
+ {
|
|
|
+ .compatible = "microchip,usb2512b",
|
|
|
+ .data = &usb2512b_data,
|
|
|
+ }, {
|
|
|
+ .compatible = "microchip,usb2512bi",
|
|
|
+ .data = &usb2512bi_data,
|
|
|
+ }, {
|
|
|
+ .compatible = "microchip,usb2513b",
|
|
|
+ .data = &usb2513b_data,
|
|
|
+ }, {
|
|
|
+ .compatible = "microchip,usb2513bi",
|
|
|
+ .data = &usb2513bi_data,
|
|
|
+ }, {
|
|
|
+ .compatible = "microchip,usb2514b",
|
|
|
+ .data = &usb2514b_data,
|
|
|
+ }, {
|
|
|
+ .compatible = "microchip,usb2514bi",
|
|
|
+ .data = &usb2514bi_data,
|
|
|
+ }, {
|
|
|
+ /* sentinel */
|
|
|
+ }
|
|
|
+};
|
|
|
+MODULE_DEVICE_TABLE(of, usb251xb_of_match);
|
|
|
+#else /* CONFIG_OF */
|
|
|
+static int usb251xb_get_ofdata(struct usb251xb *hub,
|
|
|
+ struct usb251xb_data *data)
|
|
|
+{
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+#endif /* CONFIG_OF */
|
|
|
+
|
|
|
+static int usb251xb_probe(struct usb251xb *hub)
|
|
|
+{
|
|
|
+ struct device *dev = hub->dev;
|
|
|
+ struct device_node *np = dev->of_node;
|
|
|
+ const struct of_device_id *of_id = of_match_device(usb251xb_of_match,
|
|
|
+ dev);
|
|
|
+ int err;
|
|
|
+
|
|
|
+ if (np) {
|
|
|
+ err = usb251xb_get_ofdata(hub,
|
|
|
+ (struct usb251xb_data *)of_id->data);
|
|
|
+ if (err) {
|
|
|
+ dev_err(dev, "failed to get ofdata: %d\n", err);
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ err = usb251xb_connect(hub);
|
|
|
+ if (err) {
|
|
|
+ dev_err(dev, "Failed to connect hub (%d)\n", err);
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+
|
|
|
+ dev_info(dev, "Hub probed successfully\n");
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int usb251xb_i2c_probe(struct i2c_client *i2c,
|
|
|
+ const struct i2c_device_id *id)
|
|
|
+{
|
|
|
+ struct usb251xb *hub;
|
|
|
+
|
|
|
+ hub = devm_kzalloc(&i2c->dev, sizeof(struct usb251xb), GFP_KERNEL);
|
|
|
+ if (!hub)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ i2c_set_clientdata(i2c, hub);
|
|
|
+ hub->dev = &i2c->dev;
|
|
|
+ hub->i2c = i2c;
|
|
|
+
|
|
|
+ return usb251xb_probe(hub);
|
|
|
+}
|
|
|
+
|
|
|
+static const struct i2c_device_id usb251xb_id[] = {
|
|
|
+ { "usb2512b", 0 },
|
|
|
+ { "usb2512bi", 0 },
|
|
|
+ { "usb2513b", 0 },
|
|
|
+ { "usb2513bi", 0 },
|
|
|
+ { "usb2514b", 0 },
|
|
|
+ { "usb2514bi", 0 },
|
|
|
+ { /* sentinel */ }
|
|
|
+};
|
|
|
+MODULE_DEVICE_TABLE(i2c, usb251xb_id);
|
|
|
+
|
|
|
+static struct i2c_driver usb251xb_i2c_driver = {
|
|
|
+ .driver = {
|
|
|
+ .name = DRIVER_NAME,
|
|
|
+ .of_match_table = of_match_ptr(usb251xb_of_match),
|
|
|
+ },
|
|
|
+ .probe = usb251xb_i2c_probe,
|
|
|
+ .id_table = usb251xb_id,
|
|
|
+};
|
|
|
+
|
|
|
+module_i2c_driver(usb251xb_i2c_driver);
|
|
|
+
|
|
|
+MODULE_AUTHOR("Richard Leitner <richard.leitner@skidata.com>");
|
|
|
+MODULE_DESCRIPTION("USB251xB/xBi USB 2.0 Hub Controller Driver");
|
|
|
+MODULE_LICENSE("GPL");
|
Richard Leitner