| /* |
| * Driver for Microchip USB251xB USB 2.0 Hi-Speed Hub Controller |
| * Configuration via SMBus. |
| * |
| * Copyright (c) 2017 SKIDATA AG |
| * |
| * This work is based on the USB3503 driver by Dongjin Kim and |
| * a not-accepted patch by Fabien Lahoudere, see: |
| * https://patchwork.kernel.org/patch/9257715/ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/gpio.h> |
| #include <linux/i2c.h> |
| #include <linux/module.h> |
| #include <linux/nls.h> |
| #include <linux/of_device.h> |
| #include <linux/of_gpio.h> |
| #include <linux/slab.h> |
| |
| /* Internal Register Set Addresses & Default Values acc. to DS00001692C */ |
| #define USB251XB_ADDR_VENDOR_ID_LSB 0x00 |
| #define USB251XB_ADDR_VENDOR_ID_MSB 0x01 |
| #define USB251XB_DEF_VENDOR_ID 0x0424 |
| |
| #define USB251XB_ADDR_PRODUCT_ID_LSB 0x02 |
| #define USB251XB_ADDR_PRODUCT_ID_MSB 0x03 |
| #define USB251XB_DEF_PRODUCT_ID_12 0x2512 /* USB2512B/12Bi */ |
| #define USB251XB_DEF_PRODUCT_ID_13 0x2513 /* USB2513B/13Bi */ |
| #define USB251XB_DEF_PRODUCT_ID_14 0x2514 /* USB2514B/14Bi */ |
| |
| #define USB251XB_ADDR_DEVICE_ID_LSB 0x04 |
| #define USB251XB_ADDR_DEVICE_ID_MSB 0x05 |
| #define USB251XB_DEF_DEVICE_ID 0x0BB3 |
| |
| #define USB251XB_ADDR_CONFIG_DATA_1 0x06 |
| #define USB251XB_DEF_CONFIG_DATA_1 0x9B |
| #define USB251XB_ADDR_CONFIG_DATA_2 0x07 |
| #define USB251XB_DEF_CONFIG_DATA_2 0x20 |
| #define USB251XB_ADDR_CONFIG_DATA_3 0x08 |
| #define USB251XB_DEF_CONFIG_DATA_3 0x02 |
| |
| #define USB251XB_ADDR_NON_REMOVABLE_DEVICES 0x09 |
| #define USB251XB_DEF_NON_REMOVABLE_DEVICES 0x00 |
| |
| #define USB251XB_ADDR_PORT_DISABLE_SELF 0x0A |
| #define USB251XB_DEF_PORT_DISABLE_SELF 0x00 |
| #define USB251XB_ADDR_PORT_DISABLE_BUS 0x0B |
| #define USB251XB_DEF_PORT_DISABLE_BUS 0x00 |
| |
| #define USB251XB_ADDR_MAX_POWER_SELF 0x0C |
| #define USB251XB_DEF_MAX_POWER_SELF 0x01 |
| #define USB251XB_ADDR_MAX_POWER_BUS 0x0D |
| #define USB251XB_DEF_MAX_POWER_BUS 0x32 |
| |
| #define USB251XB_ADDR_MAX_CURRENT_SELF 0x0E |
| #define USB251XB_DEF_MAX_CURRENT_SELF 0x01 |
| #define USB251XB_ADDR_MAX_CURRENT_BUS 0x0F |
| #define USB251XB_DEF_MAX_CURRENT_BUS 0x32 |
| |
| #define USB251XB_ADDR_POWER_ON_TIME 0x10 |
| #define USB251XB_DEF_POWER_ON_TIME 0x32 |
| |
| #define USB251XB_ADDR_LANGUAGE_ID_HIGH 0x11 |
| #define USB251XB_ADDR_LANGUAGE_ID_LOW 0x12 |
| #define USB251XB_DEF_LANGUAGE_ID 0x0000 |
| |
| #define USB251XB_STRING_BUFSIZE 62 |
| #define USB251XB_ADDR_MANUFACTURER_STRING_LEN 0x13 |
| #define USB251XB_ADDR_MANUFACTURER_STRING 0x16 |
| #define USB251XB_DEF_MANUFACTURER_STRING "Microchip" |
| |
| #define USB251XB_ADDR_PRODUCT_STRING_LEN 0x14 |
| #define USB251XB_ADDR_PRODUCT_STRING 0x54 |
| #define USB251XB_DEF_PRODUCT_STRING "USB251xB/xBi" |
| |
| #define USB251XB_ADDR_SERIAL_STRING_LEN 0x15 |
| #define USB251XB_ADDR_SERIAL_STRING 0x92 |
| #define USB251XB_DEF_SERIAL_STRING "" |
| |
| #define USB251XB_ADDR_BATTERY_CHARGING_ENABLE 0xD0 |
| #define USB251XB_DEF_BATTERY_CHARGING_ENABLE 0x00 |
| |
| #define USB251XB_ADDR_BOOST_UP 0xF6 |
| #define USB251XB_DEF_BOOST_UP 0x00 |
| #define USB251XB_ADDR_BOOST_X 0xF8 |
| #define USB251XB_DEF_BOOST_X 0x00 |
| |
| #define USB251XB_ADDR_PORT_SWAP 0xFA |
| #define USB251XB_DEF_PORT_SWAP 0x00 |
| |
| #define USB251XB_ADDR_PORT_MAP_12 0xFB |
| #define USB251XB_DEF_PORT_MAP_12 0x00 |
| #define USB251XB_ADDR_PORT_MAP_34 0xFC |
| #define USB251XB_DEF_PORT_MAP_34 0x00 /* USB2513B/i & USB2514B/i only */ |
| |
| #define USB251XB_ADDR_STATUS_COMMAND 0xFF |
| #define USB251XB_STATUS_COMMAND_SMBUS_DOWN 0x04 |
| #define USB251XB_STATUS_COMMAND_RESET 0x02 |
| #define USB251XB_STATUS_COMMAND_ATTACH 0x01 |
| |
| #define USB251XB_I2C_REG_SZ 0x100 |
| #define USB251XB_I2C_WRITE_SZ 0x10 |
| |
| #define DRIVER_NAME "usb251xb" |
| #define DRIVER_DESC "Microchip USB 2.0 Hi-Speed Hub Controller" |
| |
| struct usb251xb { |
| struct device *dev; |
| struct i2c_client *i2c; |
| u8 skip_config; |
| int gpio_reset; |
| u16 vendor_id; |
| u16 product_id; |
| u16 device_id; |
| u8 conf_data1; |
| u8 conf_data2; |
| u8 conf_data3; |
| u8 non_rem_dev; |
| u8 port_disable_sp; |
| u8 port_disable_bp; |
| u8 max_power_sp; |
| u8 max_power_bp; |
| u8 max_current_sp; |
| u8 max_current_bp; |
| u8 power_on_time; |
| u16 lang_id; |
| u8 manufacturer_len; |
| u8 product_len; |
| u8 serial_len; |
| char manufacturer[USB251XB_STRING_BUFSIZE]; |
| char product[USB251XB_STRING_BUFSIZE]; |
| char serial[USB251XB_STRING_BUFSIZE]; |
| u8 bat_charge_en; |
| u8 boost_up; |
| u8 boost_x; |
| u8 port_swap; |
| u8 port_map12; |
| u8 port_map34; |
| u8 status; |
| }; |
| |
| struct usb251xb_data { |
| u16 product_id; |
| char product_str[USB251XB_STRING_BUFSIZE / 2]; /* ASCII string */ |
| }; |
| |
| static const struct usb251xb_data usb2512b_data = { |
| .product_id = 0x2512, |
| .product_str = "USB2512B", |
| }; |
| |
| static const struct usb251xb_data usb2512bi_data = { |
| .product_id = 0x2512, |
| .product_str = "USB2512Bi", |
| }; |
| |
| static const struct usb251xb_data usb2513b_data = { |
| .product_id = 0x2513, |
| .product_str = "USB2513B", |
| }; |
| |
| static const struct usb251xb_data usb2513bi_data = { |
| .product_id = 0x2513, |
| .product_str = "USB2513Bi", |
| }; |
| |
| static const struct usb251xb_data usb2514b_data = { |
| .product_id = 0x2514, |
| .product_str = "USB2514B", |
| }; |
| |
| static const struct usb251xb_data usb2514bi_data = { |
| .product_id = 0x2514, |
| .product_str = "USB2514Bi", |
| }; |
| |
| static void usb251xb_reset(struct usb251xb *hub, int state) |
| { |
| if (!gpio_is_valid(hub->gpio_reset)) |
| return; |
| |
| gpio_set_value_cansleep(hub->gpio_reset, state); |
| |
| /* wait for hub recovery/stabilization */ |
| if (state) |
| usleep_range(500, 750); /* >=500us at power on */ |
| else |
| usleep_range(1, 10); /* >=1us at power down */ |
| } |
| |
| static int usb251xb_connect(struct usb251xb *hub) |
| { |
| struct device *dev = hub->dev; |
| int err, i; |
| char i2c_wb[USB251XB_I2C_REG_SZ]; |
| |
| memset(i2c_wb, 0, USB251XB_I2C_REG_SZ); |
| |
| if (hub->skip_config) { |
| dev_info(dev, "Skip hub configuration, only attach.\n"); |
| i2c_wb[0] = 0x01; |
| i2c_wb[1] = USB251XB_STATUS_COMMAND_ATTACH; |
| |
| usb251xb_reset(hub, 1); |
| |
| err = i2c_smbus_write_i2c_block_data(hub->i2c, |
| USB251XB_ADDR_STATUS_COMMAND, 2, i2c_wb); |
| if (err) { |
| dev_err(dev, "attaching hub failed: %d\n", err); |
| return err; |
| } |
| return 0; |
| } |
| |
| i2c_wb[USB251XB_ADDR_VENDOR_ID_MSB] = (hub->vendor_id >> 8) & 0xFF; |
| i2c_wb[USB251XB_ADDR_VENDOR_ID_LSB] = hub->vendor_id & 0xFF; |
| i2c_wb[USB251XB_ADDR_PRODUCT_ID_MSB] = (hub->product_id >> 8) & 0xFF; |
| i2c_wb[USB251XB_ADDR_PRODUCT_ID_LSB] = hub->product_id & 0xFF; |
| i2c_wb[USB251XB_ADDR_DEVICE_ID_MSB] = (hub->device_id >> 8) & 0xFF; |
| i2c_wb[USB251XB_ADDR_DEVICE_ID_LSB] = hub->device_id & 0xFF; |
| i2c_wb[USB251XB_ADDR_CONFIG_DATA_1] = hub->conf_data1; |
| i2c_wb[USB251XB_ADDR_CONFIG_DATA_2] = hub->conf_data2; |
| i2c_wb[USB251XB_ADDR_CONFIG_DATA_3] = hub->conf_data3; |
| i2c_wb[USB251XB_ADDR_NON_REMOVABLE_DEVICES] = hub->non_rem_dev; |
| i2c_wb[USB251XB_ADDR_PORT_DISABLE_SELF] = hub->port_disable_sp; |
| i2c_wb[USB251XB_ADDR_PORT_DISABLE_BUS] = hub->port_disable_bp; |
| i2c_wb[USB251XB_ADDR_MAX_POWER_SELF] = hub->max_power_sp; |
| i2c_wb[USB251XB_ADDR_MAX_POWER_BUS] = hub->max_power_bp; |
| i2c_wb[USB251XB_ADDR_MAX_CURRENT_SELF] = hub->max_current_sp; |
| i2c_wb[USB251XB_ADDR_MAX_CURRENT_BUS] = hub->max_current_bp; |
| i2c_wb[USB251XB_ADDR_POWER_ON_TIME] = hub->power_on_time; |
| i2c_wb[USB251XB_ADDR_LANGUAGE_ID_HIGH] = (hub->lang_id >> 8) & 0xFF; |
| i2c_wb[USB251XB_ADDR_LANGUAGE_ID_LOW] = hub->lang_id & 0xFF; |
| i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING_LEN] = hub->manufacturer_len; |
| i2c_wb[USB251XB_ADDR_PRODUCT_STRING_LEN] = hub->product_len; |
| i2c_wb[USB251XB_ADDR_SERIAL_STRING_LEN] = hub->serial_len; |
| memcpy(&i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING], hub->manufacturer, |
| USB251XB_STRING_BUFSIZE); |
| memcpy(&i2c_wb[USB251XB_ADDR_SERIAL_STRING], hub->serial, |
| USB251XB_STRING_BUFSIZE); |
| memcpy(&i2c_wb[USB251XB_ADDR_PRODUCT_STRING], hub->product, |
| USB251XB_STRING_BUFSIZE); |
| i2c_wb[USB251XB_ADDR_BATTERY_CHARGING_ENABLE] = hub->bat_charge_en; |
| i2c_wb[USB251XB_ADDR_BOOST_UP] = hub->boost_up; |
| i2c_wb[USB251XB_ADDR_BOOST_X] = hub->boost_x; |
| i2c_wb[USB251XB_ADDR_PORT_SWAP] = hub->port_swap; |
| i2c_wb[USB251XB_ADDR_PORT_MAP_12] = hub->port_map12; |
| i2c_wb[USB251XB_ADDR_PORT_MAP_34] = hub->port_map34; |
| i2c_wb[USB251XB_ADDR_STATUS_COMMAND] = USB251XB_STATUS_COMMAND_ATTACH; |
| |
| usb251xb_reset(hub, 1); |
| |
| /* write registers */ |
| for (i = 0; i < (USB251XB_I2C_REG_SZ / USB251XB_I2C_WRITE_SZ); i++) { |
| int offset = i * USB251XB_I2C_WRITE_SZ; |
| char wbuf[USB251XB_I2C_WRITE_SZ + 1]; |
| |
| /* The first data byte transferred tells the hub how many data |
| * bytes will follow (byte count). |
| */ |
| wbuf[0] = USB251XB_I2C_WRITE_SZ; |
| memcpy(&wbuf[1], &i2c_wb[offset], USB251XB_I2C_WRITE_SZ); |
| |
| dev_dbg(dev, "writing %d byte block %d to 0x%02X\n", |
| USB251XB_I2C_WRITE_SZ, i, offset); |
| |
| err = i2c_smbus_write_i2c_block_data(hub->i2c, offset, |
| USB251XB_I2C_WRITE_SZ + 1, |
| wbuf); |
| if (err) |
| goto out_err; |
| } |
| |
| dev_info(dev, "Hub configuration was successful.\n"); |
| return 0; |
| |
| out_err: |
| dev_err(dev, "configuring block %d failed: %d\n", i, err); |
| return err; |
| } |
| |
| #ifdef CONFIG_OF |
| static int usb251xb_get_ofdata(struct usb251xb *hub, |
| struct usb251xb_data *data) |
| { |
| struct device *dev = hub->dev; |
| struct device_node *np = dev->of_node; |
| int len, err, i; |
| u32 *property_u32 = NULL; |
| const u32 *cproperty_u32; |
| const char *cproperty_char; |
| char str[USB251XB_STRING_BUFSIZE / 2]; |
| |
| if (!np) { |
| dev_err(dev, "failed to get ofdata\n"); |
| return -ENODEV; |
| } |
| |
| if (of_get_property(np, "skip-config", NULL)) |
| hub->skip_config = 1; |
| else |
| hub->skip_config = 0; |
| |
| hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); |
| if (hub->gpio_reset == -EPROBE_DEFER) |
| return -EPROBE_DEFER; |
| if (gpio_is_valid(hub->gpio_reset)) { |
| err = devm_gpio_request_one(dev, hub->gpio_reset, |
| GPIOF_OUT_INIT_LOW, |
| "usb251xb reset"); |
| if (err) { |
| dev_err(dev, |
| "unable to request GPIO %d as reset pin (%d)\n", |
| hub->gpio_reset, err); |
| return err; |
| } |
| } |
| |
| if (of_property_read_u16_array(np, "vendor-id", &hub->vendor_id, 1)) |
| hub->vendor_id = USB251XB_DEF_VENDOR_ID; |
| |
| if (of_property_read_u16_array(np, "product-id", |
| &hub->product_id, 1)) |
| hub->product_id = data->product_id; |
| |
| if (of_property_read_u16_array(np, "device-id", &hub->device_id, 1)) |
| hub->device_id = USB251XB_DEF_DEVICE_ID; |
| |
| 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_property_read_u32(np, "oc-delay-us", property_u32)) { |
| if (*property_u32 == 100) { |
| /* 100 us*/ |
| hub->conf_data2 &= ~BIT(5); |
| hub->conf_data2 &= ~BIT(4); |
| } else if (*property_u32 == 4000) { |
| /* 4 ms */ |
| hub->conf_data2 &= ~BIT(5); |
| hub->conf_data2 |= BIT(4); |
| } else if (*property_u32 == 16000) { |
| /* 16 ms */ |
| hub->conf_data2 |= BIT(5); |
| hub->conf_data2 |= BIT(4); |
| } else { |
| /* 8 ms (DEFAULT) */ |
| 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->power_on_time = USB251XB_DEF_POWER_ON_TIME; |
| if (!of_property_read_u32(np, "power-on-time-ms", property_u32)) |
| hub->power_on_time = min_t(u8, *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->max_power_sp = USB251XB_DEF_MAX_POWER_SELF; |
| hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS; |
| hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF; |
| hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS; |
| 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 && of_id) { |
| 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"); |