Rev 846 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 846 | giacomo | 1 | /* |
| 2 | * drivers/usb/core/driverfs.c |
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| 3 | * |
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| 4 | * (C) Copyright 2002 David Brownell |
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| 5 | * (C) Copyright 2002 Greg Kroah-Hartman |
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| 6 | * (C) Copyright 2002 IBM Corp. |
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| 7 | * |
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| 8 | * All of the driverfs file attributes for usb devices and interfaces. |
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| 9 | * |
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| 10 | */ |
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| 11 | |||
| 12 | |||
| 13 | #include <linuxcomp.h> |
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| 14 | |||
| 15 | #include <linux/config.h> |
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| 16 | #include <linux/kernel.h> |
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| 17 | |||
| 18 | #ifdef CONFIG_USB_DEBUG |
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| 19 | #define DEBUG |
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| 20 | #else |
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| 21 | #undef DEBUG |
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| 22 | #endif |
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| 23 | #include <linux/usb.h> |
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| 24 | |||
| 25 | #include "usb.h" |
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| 26 | |||
| 27 | /* Active configuration fields */ |
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| 28 | #define usb_actconfig_show(field, format_string) \ |
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| 29 | static ssize_t \ |
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| 30 | show_##field (struct device *dev, char *buf) \ |
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| 31 | { \ |
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| 32 | struct usb_device *udev; \ |
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| 33 | \ |
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| 34 | udev = to_usb_device (dev); \ |
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| 35 | if (udev->actconfig) \ |
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| 36 | return sprintf26 (buf, format_string, udev->actconfig->desc.field); \ |
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| 37 | else return 0; \ |
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| 38 | } \ |
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| 39 | |||
| 40 | #define usb_actconfig_attr(field, format_string) \ |
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| 41 | usb_actconfig_show(field,format_string) \ |
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| 42 | static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); |
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| 43 | |||
| 44 | usb_actconfig_attr (bNumInterfaces, "%2d\n") |
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| 45 | usb_actconfig_attr (bmAttributes, "%2x\n") |
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| 46 | usb_actconfig_attr (bMaxPower, "%3dmA\n") |
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| 47 | |||
| 48 | /* configuration value is always present, and r/w */ |
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| 49 | usb_actconfig_show(bConfigurationValue,"%u\n"); |
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| 50 | |||
| 51 | static ssize_t |
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| 52 | set_bConfigurationValue (struct device *dev, const char *buf, size_t count) |
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| 53 | { |
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| 54 | struct usb_device *udev = udev = to_usb_device (dev); |
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| 55 | int config, value; |
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| 56 | |||
| 57 | if (sscanf26(buf, "%u", &config) != 1 || config > 255) |
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| 58 | return -EINVAL; |
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| 59 | value = usb_set_configuration (udev, config); |
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| 60 | return (value < 0) ? value : count; |
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| 61 | } |
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| 62 | |||
| 63 | static DEVICE_ATTR(bConfigurationValue, S_IRUGO | S_IWUSR, |
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| 64 | show_bConfigurationValue, set_bConfigurationValue); |
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| 65 | |||
| 66 | /* String fields */ |
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| 67 | static ssize_t show_product (struct device *dev, char *buf) |
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| 68 | { |
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| 69 | struct usb_device *udev; |
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| 70 | int len; |
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| 71 | |||
| 72 | udev = to_usb_device (dev); |
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| 73 | |||
| 74 | len = usb_string(udev, udev->descriptor.iProduct, buf, PAGE_SIZE); |
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| 75 | if (len < 0) |
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| 76 | return 0; |
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| 77 | buf[len] = '\n'; |
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| 78 | buf[len+1] = 0; |
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| 79 | return len+1; |
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| 80 | } |
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| 81 | static DEVICE_ATTR(product,S_IRUGO,show_product,NULL); |
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| 82 | |||
| 83 | static ssize_t |
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| 84 | show_manufacturer (struct device *dev, char *buf) |
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| 85 | { |
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| 86 | struct usb_device *udev; |
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| 87 | int len; |
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| 88 | |||
| 89 | udev = to_usb_device (dev); |
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| 90 | |||
| 91 | len = usb_string(udev, udev->descriptor.iManufacturer, buf, PAGE_SIZE); |
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| 92 | if (len < 0) |
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| 93 | return 0; |
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| 94 | buf[len] = '\n'; |
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| 95 | buf[len+1] = 0; |
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| 96 | return len+1; |
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| 97 | } |
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| 98 | static DEVICE_ATTR(manufacturer,S_IRUGO,show_manufacturer,NULL); |
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| 99 | |||
| 100 | static ssize_t |
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| 101 | show_serial (struct device *dev, char *buf) |
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| 102 | { |
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| 103 | struct usb_device *udev; |
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| 104 | int len; |
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| 105 | |||
| 106 | udev = to_usb_device (dev); |
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| 107 | |||
| 108 | len = usb_string(udev, udev->descriptor.iSerialNumber, buf, PAGE_SIZE); |
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| 109 | if (len < 0) |
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| 110 | return 0; |
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| 111 | buf[len] = '\n'; |
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| 112 | buf[len+1] = 0; |
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| 113 | return len+1; |
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| 114 | } |
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| 115 | static DEVICE_ATTR(serial,S_IRUGO,show_serial,NULL); |
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| 116 | |||
| 117 | static ssize_t |
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| 118 | show_speed (struct device *dev, char *buf) |
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| 119 | { |
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| 120 | struct usb_device *udev; |
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| 121 | char *speed; |
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| 122 | |||
| 123 | udev = to_usb_device (dev); |
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| 124 | |||
| 125 | switch (udev->speed) { |
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| 126 | case USB_SPEED_LOW: |
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| 127 | speed = "1.5"; |
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| 128 | break; |
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| 129 | case USB_SPEED_UNKNOWN: |
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| 130 | case USB_SPEED_FULL: |
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| 131 | speed = "12"; |
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| 132 | break; |
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| 133 | case USB_SPEED_HIGH: |
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| 134 | speed = "480"; |
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| 135 | break; |
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| 136 | default: |
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| 137 | speed = "unknown"; |
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| 138 | } |
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| 139 | return sprintf26 (buf, "%s\n", speed); |
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| 140 | } |
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| 141 | static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL); |
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| 142 | |||
| 143 | /* Descriptor fields */ |
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| 144 | #define usb_descriptor_attr(field, format_string) \ |
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| 145 | static ssize_t \ |
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| 146 | show_##field (struct device *dev, char *buf) \ |
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| 147 | { \ |
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| 148 | struct usb_device *udev; \ |
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| 149 | \ |
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| 150 | udev = to_usb_device (dev); \ |
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| 151 | return sprintf26 (buf, format_string, udev->descriptor.field); \ |
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| 152 | } \ |
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| 153 | static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); |
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| 154 | |||
| 155 | usb_descriptor_attr (idVendor, "%04x\n") |
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| 156 | usb_descriptor_attr (idProduct, "%04x\n") |
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| 157 | usb_descriptor_attr (bcdDevice, "%04x\n") |
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| 158 | usb_descriptor_attr (bDeviceClass, "%02x\n") |
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| 159 | usb_descriptor_attr (bDeviceSubClass, "%02x\n") |
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| 160 | usb_descriptor_attr (bDeviceProtocol, "%02x\n") |
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| 161 | usb_descriptor_attr (bNumConfigurations, "%d\n") |
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| 162 | |||
| 163 | |||
| 164 | void usb_create_driverfs_dev_files (struct usb_device *udev) |
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| 165 | { |
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| 166 | struct device *dev = &udev->dev; |
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| 167 | |||
| 168 | /* current configuration's attributes */ |
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| 169 | device_create_file (dev, &dev_attr_bNumInterfaces); |
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| 170 | device_create_file (dev, &dev_attr_bConfigurationValue); |
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| 171 | device_create_file (dev, &dev_attr_bmAttributes); |
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| 172 | device_create_file (dev, &dev_attr_bMaxPower); |
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| 173 | |||
| 174 | /* device attributes */ |
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| 175 | device_create_file (dev, &dev_attr_idVendor); |
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| 176 | device_create_file (dev, &dev_attr_idProduct); |
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| 177 | device_create_file (dev, &dev_attr_bcdDevice); |
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| 178 | device_create_file (dev, &dev_attr_bDeviceClass); |
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| 179 | device_create_file (dev, &dev_attr_bDeviceSubClass); |
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| 180 | device_create_file (dev, &dev_attr_bDeviceProtocol); |
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| 181 | device_create_file (dev, &dev_attr_bNumConfigurations); |
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| 182 | |||
| 183 | /* speed varies depending on how you connect the device */ |
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| 184 | device_create_file (dev, &dev_attr_speed); |
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| 185 | // FIXME iff there are other speed configs, show how many |
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| 186 | |||
| 187 | if (udev->descriptor.iManufacturer) |
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| 188 | device_create_file (dev, &dev_attr_manufacturer); |
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| 189 | if (udev->descriptor.iProduct) |
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| 190 | device_create_file (dev, &dev_attr_product); |
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| 191 | if (udev->descriptor.iSerialNumber) |
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| 192 | device_create_file (dev, &dev_attr_serial); |
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| 193 | } |
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| 194 | |||
| 195 | /* Interface fields */ |
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| 196 | #define usb_intf_attr(field, format_string) \ |
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| 197 | static ssize_t \ |
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| 198 | show_##field (struct device *dev, char *buf) \ |
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| 199 | { \ |
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| 200 | struct usb_interface *intf; \ |
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| 201 | int alt; \ |
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| 202 | \ |
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| 203 | intf = to_usb_interface (dev); \ |
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| 204 | alt = intf->act_altsetting; \ |
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| 205 | \ |
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| 206 | return sprintf26 (buf, format_string, intf->altsetting[alt].desc.field); \ |
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| 207 | } \ |
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| 208 | static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); |
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| 209 | |||
| 210 | usb_intf_attr (bInterfaceNumber, "%02x\n") |
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| 211 | usb_intf_attr (bAlternateSetting, "%2d\n") |
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| 212 | usb_intf_attr (bNumEndpoints, "%02x\n") |
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| 213 | usb_intf_attr (bInterfaceClass, "%02x\n") |
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| 214 | usb_intf_attr (bInterfaceSubClass, "%02x\n") |
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| 215 | usb_intf_attr (bInterfaceProtocol, "%02x\n") |
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| 216 | usb_intf_attr (iInterface, "%02x\n") |
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| 217 | |||
| 218 | void usb_create_driverfs_intf_files (struct usb_interface *intf) |
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| 219 | { |
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| 220 | device_create_file (&intf->dev, &dev_attr_bInterfaceNumber); |
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| 221 | device_create_file (&intf->dev, &dev_attr_bAlternateSetting); |
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| 222 | device_create_file (&intf->dev, &dev_attr_bNumEndpoints); |
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| 223 | device_create_file (&intf->dev, &dev_attr_bInterfaceClass); |
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| 224 | device_create_file (&intf->dev, &dev_attr_bInterfaceSubClass); |
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| 225 | device_create_file (&intf->dev, &dev_attr_bInterfaceProtocol); |
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| 226 | device_create_file (&intf->dev, &dev_attr_iInterface); |
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| 227 | } |