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Diffstat (limited to 'drivers/usb/misc/usb251xb.c')
-rw-r--r--drivers/usb/misc/usb251xb.c683
1 files changed, 683 insertions, 0 deletions
diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c
new file mode 100644
index 0000000000..97f55efa82
--- /dev/null
+++ b/drivers/usb/misc/usb251xb.c
@@ -0,0 +1,683 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * 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/
+ */
+
+#include <common.h>
+#include <init.h>
+#include <driver.h>
+#include <i2c/i2c.h>
+#include <of.h>
+#include <gpio.h>
+#include <of_gpio.h>
+#include <of_device.h>
+
+#include <linux/nls.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_DEF_PRODUCT_ID_17 0x2517 /* USB2517/17i */
+
+#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/7i"
+
+#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_57 0xF7
+#define USB251XB_DEF_BOOST_57 0x00
+#define USB251XB_ADDR_BOOST_14 0xF8
+#define USB251XB_DEF_BOOST_14 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 /* USB251{3B/i,4B/i,7/i} only */
+#define USB251XB_ADDR_PORT_MAP_56 0xFD
+#define USB251XB_DEF_PORT_MAP_56 0x00 /* USB2517/i only */
+#define USB251XB_ADDR_PORT_MAP_7 0xFE
+#define USB251XB_DEF_PORT_MAP_7 0x00 /* USB2517/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_d *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_57;
+ u8 boost_14;
+ u8 port_swap;
+ u8 port_map12;
+ u8 port_map34;
+ u8 port_map56;
+ u8 port_map7;
+ u8 status;
+};
+
+struct usb251xb_data {
+ u16 product_id;
+ u8 port_cnt;
+ bool led_support;
+ bool bat_support;
+ char product_str[USB251XB_STRING_BUFSIZE / 2]; /* ASCII string */
+};
+
+static const struct usb251xb_data usb2512b_data = {
+ .product_id = 0x2512,
+ .port_cnt = 2,
+ .led_support = false,
+ .bat_support = true,
+ .product_str = "USB2512B",
+};
+
+static const struct usb251xb_data usb2512bi_data = {
+ .product_id = 0x2512,
+ .port_cnt = 2,
+ .led_support = false,
+ .bat_support = true,
+ .product_str = "USB2512Bi",
+};
+
+static const struct usb251xb_data usb2513b_data = {
+ .product_id = 0x2513,
+ .port_cnt = 3,
+ .led_support = false,
+ .bat_support = true,
+ .product_str = "USB2513B",
+};
+
+static const struct usb251xb_data usb2513bi_data = {
+ .product_id = 0x2513,
+ .port_cnt = 3,
+ .led_support = false,
+ .bat_support = true,
+ .product_str = "USB2513Bi",
+};
+
+static const struct usb251xb_data usb2514b_data = {
+ .product_id = 0x2514,
+ .port_cnt = 4,
+ .led_support = false,
+ .bat_support = true,
+ .product_str = "USB2514B",
+};
+
+static const struct usb251xb_data usb2514bi_data = {
+ .product_id = 0x2514,
+ .port_cnt = 4,
+ .led_support = false,
+ .bat_support = true,
+ .product_str = "USB2514Bi",
+};
+
+static const struct usb251xb_data usb2517_data = {
+ .product_id = 0x2517,
+ .port_cnt = 7,
+ .led_support = true,
+ .bat_support = false,
+ .product_str = "USB2517",
+};
+
+static const struct usb251xb_data usb2517i_data = {
+ .product_id = 0x2517,
+ .port_cnt = 7,
+ .led_support = true,
+ .bat_support = false,
+ .product_str = "USB2517i",
+};
+
+static void usb251xb_reset(struct usb251xb *hub, int state)
+{
+ if (!gpio_is_valid(hub->gpio_reset))
+ return;
+
+ gpio_set_active(hub->gpio_reset, state);
+
+ /* wait for hub recovery/stabilization */
+ if (!state)
+ udelay(750); /* >=500us at power on */
+ else
+ udelay(10); /* >=1us at power down */
+}
+
+static int usb251xb_connect(struct usb251xb *hub)
+{
+ struct device_d *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, 0);
+
+ 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_57] = hub->boost_57;
+ i2c_wb[USB251XB_ADDR_BOOST_14] = hub->boost_14;
+ 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_PORT_MAP_56] = hub->port_map56;
+ i2c_wb[USB251XB_ADDR_PORT_MAP_7] = hub->port_map7;
+ i2c_wb[USB251XB_ADDR_STATUS_COMMAND] = USB251XB_STATUS_COMMAND_ATTACH;
+
+ usb251xb_reset(hub, 0);
+
+ /* 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_OFDEVICE
+static int usb251xb_get_ofdata(struct usb251xb *hub,
+ struct usb251xb_data *data)
+{
+ struct device_d *dev = hub->dev;
+ struct device_node *np = dev->device_node;
+ int len, err, i;
+ u32 port, property_u32 = 0;
+ const u32 *cproperty_u32;
+ const char *cproperty_char;
+ enum of_gpio_flags of_flags;
+ unsigned long flags = GPIOF_OUT_INIT_ACTIVE;
+ char str[USB251XB_STRING_BUFSIZE / 2];
+ struct property *prop;
+ const __be32 *p;
+
+ 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_flags(np, "reset-gpios", 0,
+ &of_flags);
+ if (gpio_is_valid(hub->gpio_reset)) {
+ char *name;
+ int ret;
+
+ if (of_flags & OF_GPIO_ACTIVE_LOW)
+ flags |= GPIOF_ACTIVE_LOW;
+
+ name = basprintf("%s reset", dev_name(dev));
+ ret = gpio_request_one(hub->gpio_reset, flags, name);
+ if (ret < 0)
+ return ret;
+ } else if (hub->gpio_reset == -EPROBE_DEFER) {
+ return -EPROBE_DEFER;
+ } else {
+ err = hub->gpio_reset;
+ dev_err(dev, "unable to request GPIO reset pin (%d)\n", 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 (data->led_support && of_get_property(np, "led-usb-mode", NULL))
+ hub->conf_data3 &= ~BIT(1);
+
+ 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 <= data->port_cnt))
+ hub->non_rem_dev |= BIT(port);
+ else
+ dev_warn(dev, "NRD port %u doesn't exist\n",
+ 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 <= data->port_cnt))
+ hub->port_disable_sp |= BIT(port);
+ else
+ dev_warn(dev, "PDS port %u doesn't exist\n",
+ 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 <= data->port_cnt))
+ hub->port_disable_bp |= BIT(port);
+ else
+ dev_warn(dev, "PDB port %u doesn't exist\n",
+ port);
+ }
+ }
+
+ hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF;
+ if (!of_property_read_u32(np, "sp-max-total-current-microamp",
+ &property_u32))
+ hub->max_power_sp = min_t(u8, property_u32 / 2000, 50);
+
+ hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS;
+ if (!of_property_read_u32(np, "bp-max-total-current-microamp",
+ &property_u32))
+ hub->max_power_bp = min_t(u8, property_u32 / 2000, 255);
+
+ hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF;
+ if (!of_property_read_u32(np, "sp-max-removable-current-microamp",
+ &property_u32))
+ hub->max_current_sp = min_t(u8, property_u32 / 2000, 50);
+
+ hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS;
+ if (!of_property_read_u32(np, "bp-max-removable-current-microamp",
+ &property_u32))
+ hub->max_current_bp = min_t(u8, property_u32 / 2000, 255);
+
+ 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 datasheet documents the register as 'Port Swap' but the register
+ * controls the USB DP/DM signal swapping
+ */
+ hub->port_swap = USB251XB_DEF_PORT_SWAP;
+ of_property_for_each_u32(np, "swap-dx-lanes", prop, p, port) {
+ if ((port >= 0) && (port <= data->port_cnt))
+ hub->port_swap |= BIT(port);
+ }
+
+ /* 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_57 = USB251XB_DEF_BOOST_57;
+ hub->boost_14 = USB251XB_DEF_BOOST_14;
+ hub->port_map12 = USB251XB_DEF_PORT_MAP_12;
+ hub->port_map34 = USB251XB_DEF_PORT_MAP_34;
+ hub->port_map56 = USB251XB_DEF_PORT_MAP_56;
+ hub->port_map7 = USB251XB_DEF_PORT_MAP_7;
+
+ 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,
+ }, {
+ .compatible = "microchip,usb2517",
+ .data = &usb2517_data,
+ }, {
+ .compatible = "microchip,usb2517i",
+ .data = &usb2517i_data,
+ }, {
+ /* sentinel */
+ }
+};
+#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_d *dev = hub->dev;
+ struct device_node *np = dev->device_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 device_d *dev)
+{
+ struct i2c_client *i2c = to_i2c_client(dev);
+ struct usb251xb *hub;
+
+ hub = xzalloc(sizeof(struct usb251xb));
+
+ i2c_set_clientdata(i2c, hub);
+ hub->dev = &i2c->dev;
+ hub->i2c = i2c;
+
+ return usb251xb_probe(hub);
+}
+
+static const struct platform_device_id usb251xb_id[] = {
+ { "usb2512b", 0 },
+ { "usb2512bi", 0 },
+ { "usb2513b", 0 },
+ { "usb2513bi", 0 },
+ { "usb2514b", 0 },
+ { "usb2514bi", 0 },
+ { "usb2517", 0 },
+ { "usb2517i", 0 },
+ { /* sentinel */ }
+};
+
+static struct driver_d usb251xb_i2c_driver = {
+ .name = DRIVER_NAME,
+ .probe = usb251xb_i2c_probe,
+ .id_table = usb251xb_id,
+ .of_compatible = DRV_OF_COMPAT(usb251xb_of_match),
+};
+device_i2c_driver(usb251xb_i2c_driver);
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 18:17:09 +0000