From 9fc0d34763d4e3cdaa9ed05210bfdc23286b65a3 Mon Sep 17 00:00:00 2001 From: Antony Pavlov Date: Wed, 21 May 2014 12:54:42 +0400 Subject: commands: usb: add tree view capability This patch adds U-Boot 'usb tree' command functionality to barebox. Here is an example output: 1 ID 0000:0000 | u-boot EHCI Host Controller | +-2 ID 05e3:0606 | USB2.0 Hub | +-3 ID 10c4:ea60 | Silicon Labs CP2102 USB to UART Bridge Contr P-00-00669 | +-4 ID 05e3:0606 | | USB2.0 Hub | | | +-5 ID 05e3:0608 | | | USB2.0 Hub | | | | | +-6 ID 0d8c:000c | | C-Media USB Headphone Set | | | +-7 ID 0d8c:000c | C-Media USB Headphone Set | +-8 ID 0846:1040 NETGEAR NETGEAR FA120 Adapter The tree view is enabled with 'usb -t' Signed-off-by: Antony Pavlov Signed-off-by: Sascha Hauer --- commands/usb.c | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 102 insertions(+), 3 deletions(-) (limited to 'commands/usb.c') diff --git a/commands/usb.c b/commands/usb.c index 073c79c719..c158852ca9 100644 --- a/commands/usb.c +++ b/commands/usb.c @@ -22,21 +22,118 @@ #include #include +/* shows the device tree recursively */ +static void usb_show_tree_graph(struct usb_device *dev, char *pre) +{ + int i, index; + int has_child, last_child; + + index = strlen(pre); + printf(" %s", pre); + /* check if the device has connected children */ + has_child = 0; + + for (i = 0; i < dev->maxchild; i++) { + if (dev->children[i] != NULL) + has_child = 1; + } + + /* check if we are the last one */ + last_child = 1; + + if (dev->parent) { + for (i = 0; i < dev->parent->maxchild; i++) { + if (dev->parent->children[i]) + last_child = 0; + + if (dev->parent->children[i] == dev) + last_child = 1; + } /* for all children of the parent */ + printf("\b+-"); + + /* correct last child */ + if (last_child) + pre[index - 1] = ' '; + } else { + /* if not root hub */ + printf(" "); + } + + printf("%d ", dev->devnum); + + pre[index++] = ' '; + pre[index++] = has_child ? '|' : ' '; + pre[index] = 0; + + printf("ID %04x:%04x\n", dev->descriptor->idVendor, dev->descriptor->idProduct); + + if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial)) + printf(" %s %s %s %s\n", pre, dev->mf, dev->prod, dev->serial); + + printf(" %s\n", pre); + + if (dev->maxchild > 0) { + for (i = 0; i < dev->maxchild; i++) { + if (dev->children[i] != NULL) { + usb_show_tree_graph(dev->children[i], pre); + pre[index] = 0; + } + } + } +} + +/* main routine for the tree command */ +static void usb_show_tree(struct usb_device *dev) +{ + char preamble[32]; + + memset(preamble, 0, 32); + usb_show_tree_graph(dev, &preamble[0]); +} + +static void usb_show_devices(bool tree) +{ + struct usb_device *dev; + + list_for_each_entry(dev, &usb_device_list, list) { + if (tree) { + if (dev->parent == NULL) + usb_show_tree(dev); + } else { + printf("Bus %03d Device %03d: ID %04x:%04x %s\n", + dev->host->busnum, dev->devnum, + dev->descriptor->idVendor, + dev->descriptor->idProduct, + dev->prod); + } + } +} + static int do_usb(int argc, char *argv[]) { int opt; - int force = 0; + int force = 0, tree = 0, show = 0; - while ((opt = getopt(argc, argv, "f")) > 0) { + while ((opt = getopt(argc, argv, "fts")) > 0) { switch (opt) { case 'f': force = 1; break; + case 't': + tree = 1; + show = 1; + break; + case 's': + show = 1; + break; } } usb_rescan(force); + if (show) + usb_show_devices(tree); + return 0; } @@ -45,12 +142,14 @@ BAREBOX_CMD_HELP_TEXT("Scan for USB devices.") BAREBOX_CMD_HELP_TEXT("") BAREBOX_CMD_HELP_TEXT("Options:") BAREBOX_CMD_HELP_OPT("-f", "force rescan") +BAREBOX_CMD_HELP_OPT("-s", "show devices") +BAREBOX_CMD_HELP_OPT("-t", "show USB tree") BAREBOX_CMD_HELP_END BAREBOX_CMD_START(usb) .cmd = do_usb, BAREBOX_CMD_DESC("(re-)detect USB devices") - BAREBOX_CMD_OPTS("[-f]") + BAREBOX_CMD_OPTS("[-fts]") BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP) BAREBOX_CMD_HELP(cmd_usb_help) BAREBOX_CMD_COMPLETE(empty_complete) -- cgit v1.2.3