mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-09-29 16:21:59 +00:00
usb: gadget zero style fixups (mostly whitespace)
Minor updates to "Gadget Zero". - Primarily these are whitespace updates to address the fact that since this was written, Documentation/CodingStyle was changed to disapprove of parts of the original coding style. - Update a few comments that weren't quite correct, notably mentioning the "autoresume" module parameter. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell
Greg Kroah-Hartman
parent
f371e750c9
commit
7472f38b10
1 changed files with 172 additions and 193 deletions
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@ -23,9 +23,7 @@
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/*
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* Gadget Zero only needs two bulk endpoints, and is an example of how you
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* can write a hardware-agnostic gadget driver running inside a USB device.
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*
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* Hardware details are visible (see CONFIG_USB_ZERO_* below) but don't
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* affect most of the driver.
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* Some hardware details are visible, but don't affect most of the driver.
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*
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* Use it with the Linux host/master side "usbtest" driver to get a basic
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* functional test of your device-side usb stack, or with "usb-skeleton".
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@ -37,6 +35,7 @@
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* buflen=N default N=4096, buffer size used
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* qlen=N default N=32, how many buffers in the loopback queue
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* loopdefault default false, list loopback config first
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* autoresume=N default N=0, seconds before triggering remote wakeup
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*
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* Many drivers will only have one configuration, letting them be much
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* simpler if they also don't support high speed operation (like this
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@ -62,13 +61,13 @@
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/*-------------------------------------------------------------------------*/
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#define DRIVER_VERSION "Lughnasadh, 2007"
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#define DRIVER_VERSION "Earth Day 2008"
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static const char shortname [] = "zero";
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static const char longname [] = "Gadget Zero";
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static const char shortname[] = "zero";
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static const char longname[] = "Gadget Zero";
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static const char source_sink [] = "source and sink data";
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static const char loopback [] = "loop input to output";
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static const char source_sink[] = "source and sink data";
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static const char loopback[] = "loop input to output";
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/*-------------------------------------------------------------------------*/
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@ -120,16 +119,16 @@ static unsigned buflen = 4096;
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static unsigned qlen = 32;
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static unsigned pattern = 0;
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module_param (buflen, uint, S_IRUGO);
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module_param (qlen, uint, S_IRUGO);
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module_param (pattern, uint, S_IRUGO|S_IWUSR);
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module_param(buflen, uint, S_IRUGO);
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module_param(qlen, uint, S_IRUGO);
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module_param(pattern, uint, S_IRUGO|S_IWUSR);
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/*
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* if it's nonzero, autoresume says how many seconds to wait
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* before trying to wake up the host after suspend.
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*/
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static unsigned autoresume = 0;
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module_param (autoresume, uint, 0);
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module_param(autoresume, uint, 0);
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/*
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* Normally the "loopback" configuration is second (index 1) so
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@ -138,8 +137,7 @@ module_param (autoresume, uint, 0);
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* Or controllers (like superh) that only support one config.
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*/
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static int loopdefault = 0;
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module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
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module_param(loopdefault, bool, S_IRUGO|S_IWUSR);
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/*-------------------------------------------------------------------------*/
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@ -176,24 +174,22 @@ module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
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#define CONFIG_SOURCE_SINK 3
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#define CONFIG_LOOPBACK 2
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static struct usb_device_descriptor
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device_desc = {
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static struct usb_device_descriptor device_desc = {
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.bLength = sizeof device_desc,
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.bDescriptorType = USB_DT_DEVICE,
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.bcdUSB = __constant_cpu_to_le16 (0x0200),
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.bcdUSB = __constant_cpu_to_le16(0x0200),
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.bDeviceClass = USB_CLASS_VENDOR_SPEC,
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.idVendor = __constant_cpu_to_le16 (DRIVER_VENDOR_NUM),
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.idProduct = __constant_cpu_to_le16 (DRIVER_PRODUCT_NUM),
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.idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_NUM),
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.idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_NUM),
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.iManufacturer = STRING_MANUFACTURER,
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.iProduct = STRING_PRODUCT,
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.iSerialNumber = STRING_SERIAL,
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.bNumConfigurations = 2,
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};
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static struct usb_config_descriptor
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source_sink_config = {
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static struct usb_config_descriptor source_sink_config = {
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.bLength = sizeof source_sink_config,
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.bDescriptorType = USB_DT_CONFIG,
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@ -205,8 +201,7 @@ source_sink_config = {
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.bMaxPower = 1, /* self-powered */
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};
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static struct usb_config_descriptor
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loopback_config = {
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static struct usb_config_descriptor loopback_config = {
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.bLength = sizeof loopback_config,
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.bDescriptorType = USB_DT_CONFIG,
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@ -218,8 +213,7 @@ loopback_config = {
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.bMaxPower = 1, /* self-powered */
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};
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static struct usb_otg_descriptor
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otg_descriptor = {
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static struct usb_otg_descriptor otg_descriptor = {
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.bLength = sizeof otg_descriptor,
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.bDescriptorType = USB_DT_OTG,
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@ -228,8 +222,7 @@ otg_descriptor = {
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/* one interface in each configuration */
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static const struct usb_interface_descriptor
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source_sink_intf = {
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static const struct usb_interface_descriptor source_sink_intf = {
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.bLength = sizeof source_sink_intf,
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.bDescriptorType = USB_DT_INTERFACE,
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@ -238,8 +231,7 @@ source_sink_intf = {
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.iInterface = STRING_SOURCE_SINK,
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};
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static const struct usb_interface_descriptor
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loopback_intf = {
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static const struct usb_interface_descriptor loopback_intf = {
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.bLength = sizeof loopback_intf,
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.bDescriptorType = USB_DT_INTERFACE,
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@ -250,8 +242,7 @@ loopback_intf = {
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/* two full speed bulk endpoints; their use is config-dependent */
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static struct usb_endpoint_descriptor
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fs_source_desc = {
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static struct usb_endpoint_descriptor fs_source_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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@ -259,8 +250,7 @@ fs_source_desc = {
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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};
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static struct usb_endpoint_descriptor
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fs_sink_desc = {
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static struct usb_endpoint_descriptor fs_sink_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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@ -268,7 +258,7 @@ fs_sink_desc = {
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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};
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static const struct usb_descriptor_header *fs_source_sink_function [] = {
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static const struct usb_descriptor_header *fs_source_sink_function[] = {
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(struct usb_descriptor_header *) &otg_descriptor,
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(struct usb_descriptor_header *) &source_sink_intf,
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(struct usb_descriptor_header *) &fs_sink_desc,
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@ -276,7 +266,7 @@ static const struct usb_descriptor_header *fs_source_sink_function [] = {
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NULL,
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};
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static const struct usb_descriptor_header *fs_loopback_function [] = {
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static const struct usb_descriptor_header *fs_loopback_function[] = {
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(struct usb_descriptor_header *) &otg_descriptor,
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(struct usb_descriptor_header *) &loopback_intf,
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(struct usb_descriptor_header *) &fs_sink_desc,
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@ -293,36 +283,33 @@ static const struct usb_descriptor_header *fs_loopback_function [] = {
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* for the config descriptor.
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*/
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static struct usb_endpoint_descriptor
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hs_source_desc = {
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static struct usb_endpoint_descriptor hs_source_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = __constant_cpu_to_le16 (512),
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.wMaxPacketSize = __constant_cpu_to_le16(512),
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};
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static struct usb_endpoint_descriptor
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hs_sink_desc = {
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static struct usb_endpoint_descriptor hs_sink_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = __constant_cpu_to_le16 (512),
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.wMaxPacketSize = __constant_cpu_to_le16(512),
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};
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static struct usb_qualifier_descriptor
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dev_qualifier = {
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static struct usb_qualifier_descriptor dev_qualifier = {
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.bLength = sizeof dev_qualifier,
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.bDescriptorType = USB_DT_DEVICE_QUALIFIER,
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.bcdUSB = __constant_cpu_to_le16 (0x0200),
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.bcdUSB = __constant_cpu_to_le16(0x0200),
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.bDeviceClass = USB_CLASS_VENDOR_SPEC,
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.bNumConfigurations = 2,
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};
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static const struct usb_descriptor_header *hs_source_sink_function [] = {
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static const struct usb_descriptor_header *hs_source_sink_function[] = {
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(struct usb_descriptor_header *) &otg_descriptor,
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(struct usb_descriptor_header *) &source_sink_intf,
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(struct usb_descriptor_header *) &hs_source_desc,
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@ -330,7 +317,7 @@ static const struct usb_descriptor_header *hs_source_sink_function [] = {
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NULL,
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};
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static const struct usb_descriptor_header *hs_loopback_function [] = {
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static const struct usb_descriptor_header *hs_loopback_function[] = {
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(struct usb_descriptor_header *) &otg_descriptor,
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(struct usb_descriptor_header *) &loopback_intf,
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(struct usb_descriptor_header *) &hs_source_desc,
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@ -355,7 +342,7 @@ static char serial[] = "0123456789.0123456789.0123456789";
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/* static strings, in UTF-8 */
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static struct usb_string strings [] = {
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static struct usb_string strings[] = {
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{ STRING_MANUFACTURER, manufacturer, },
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{ STRING_PRODUCT, longname, },
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{ STRING_SERIAL, serial, },
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@ -387,8 +374,7 @@ static struct usb_gadget_strings stringtab = {
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* high bandwidth modes at high speed. (Maybe work like Intel's test
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* device?)
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*/
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static int
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config_buf (struct usb_gadget *gadget,
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static int config_buf(struct usb_gadget *gadget,
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u8 *buf, u8 type, unsigned index)
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{
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int is_source_sink;
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@ -419,7 +405,7 @@ config_buf (struct usb_gadget *gadget,
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if (!gadget_is_otg(gadget))
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function++;
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len = usb_gadget_config_buf (is_source_sink
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len = usb_gadget_config_buf(is_source_sink
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? &source_sink_config
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: &loopback_config,
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buf, USB_BUFSIZ, function);
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@ -431,27 +417,26 @@ config_buf (struct usb_gadget *gadget,
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/*-------------------------------------------------------------------------*/
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static struct usb_request *
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alloc_ep_req (struct usb_ep *ep, unsigned length)
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static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
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{
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struct usb_request *req;
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req = usb_ep_alloc_request (ep, GFP_ATOMIC);
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req = usb_ep_alloc_request(ep, GFP_ATOMIC);
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if (req) {
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req->length = length;
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req->buf = kmalloc(length, GFP_ATOMIC);
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if (!req->buf) {
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usb_ep_free_request (ep, req);
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usb_ep_free_request(ep, req);
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req = NULL;
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}
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}
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return req;
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}
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static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
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static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
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{
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kfree(req->buf);
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usb_ep_free_request (ep, req);
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usb_ep_free_request(ep, req);
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}
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/*-------------------------------------------------------------------------*/
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@ -472,7 +457,7 @@ static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
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/* optionally require specific source/sink data patterns */
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static int
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check_read_data (
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check_read_data(
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struct zero_dev *dev,
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struct usb_ep *ep,
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struct usb_request *req
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@ -498,8 +483,8 @@ check_read_data (
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continue;
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break;
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}
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ERROR (dev, "bad OUT byte, buf [%d] = %d\n", i, *buf);
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usb_ep_set_halt (ep);
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ERROR(dev, "bad OUT byte, buf[%d] = %d\n", i, *buf);
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usb_ep_set_halt(ep);
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return -EINVAL;
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}
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return 0;
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@ -512,7 +497,7 @@ static void reinit_write_data(struct usb_ep *ep, struct usb_request *req)
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switch (pattern) {
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case 0:
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memset (req->buf, 0, req->length);
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memset(req->buf, 0, req->length);
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break;
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case 1:
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for (i = 0; i < req->length; i++)
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@ -525,7 +510,7 @@ static void reinit_write_data(struct usb_ep *ep, struct usb_request *req)
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* irq delay between end of one request and start of the next.
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* that prevents using hardware dma queues.
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*/
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static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
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static void source_sink_complete(struct usb_ep *ep, struct usb_request *req)
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{
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struct zero_dev *dev = ep->driver_data;
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int status = req->status;
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@ -534,8 +519,8 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
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case 0: /* normal completion? */
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if (ep == dev->out_ep) {
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check_read_data (dev, ep, req);
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memset (req->buf, 0x55, req->length);
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check_read_data(dev, ep, req);
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memset(req->buf, 0x55, req->length);
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} else
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reinit_write_data(ep, req);
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break;
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@ -544,11 +529,11 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
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case -ECONNABORTED: /* hardware forced ep reset */
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case -ECONNRESET: /* request dequeued */
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case -ESHUTDOWN: /* disconnect from host */
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VDBG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
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VDBG(dev, "%s gone (%d), %d/%d\n", ep->name, status,
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req->actual, req->length);
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if (ep == dev->out_ep)
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check_read_data (dev, ep, req);
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free_ep_req (ep, req);
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check_read_data(dev, ep, req);
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free_ep_req(ep, req);
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return;
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case -EOVERFLOW: /* buffer overrun on read means that
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@ -557,18 +542,18 @@ static void source_sink_complete (struct usb_ep *ep, struct usb_request *req)
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*/
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default:
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#if 1
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DBG (dev, "%s complete --> %d, %d/%d\n", ep->name,
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DBG(dev, "%s complete --> %d, %d/%d\n", ep->name,
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status, req->actual, req->length);
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#endif
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case -EREMOTEIO: /* short read */
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break;
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}
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status = usb_ep_queue (ep, req, GFP_ATOMIC);
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status = usb_ep_queue(ep, req, GFP_ATOMIC);
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if (status) {
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ERROR (dev, "kill %s: resubmit %d bytes --> %d\n",
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ERROR(dev, "kill %s: resubmit %d bytes --> %d\n",
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ep->name, req->length, status);
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usb_ep_set_halt (ep);
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usb_ep_set_halt(ep);
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/* FIXME recover later ... somehow */
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}
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}
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@ -578,24 +563,24 @@ static struct usb_request *source_sink_start_ep(struct usb_ep *ep)
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struct usb_request *req;
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int status;
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req = alloc_ep_req (ep, buflen);
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req = alloc_ep_req(ep, buflen);
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if (!req)
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return NULL;
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memset (req->buf, 0, req->length);
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memset(req->buf, 0, req->length);
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req->complete = source_sink_complete;
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if (strcmp (ep->name, EP_IN_NAME) == 0)
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if (strcmp(ep->name, EP_IN_NAME) == 0)
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reinit_write_data(ep, req);
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else
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memset (req->buf, 0x55, req->length);
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memset(req->buf, 0x55, req->length);
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status = usb_ep_queue(ep, req, GFP_ATOMIC);
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if (status) {
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struct zero_dev *dev = ep->driver_data;
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ERROR (dev, "start %s --> %d\n", ep->name, status);
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free_ep_req (ep, req);
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ERROR(dev, "start %s --> %d\n", ep->name, status);
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free_ep_req(ep, req);
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req = NULL;
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}
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@ -608,34 +593,34 @@ static int set_source_sink_config(struct zero_dev *dev)
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struct usb_ep *ep;
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struct usb_gadget *gadget = dev->gadget;
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gadget_for_each_ep (ep, gadget) {
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gadget_for_each_ep(ep, gadget) {
|
||||
const struct usb_endpoint_descriptor *d;
|
||||
|
||||
/* one endpoint writes (sources) zeroes in (to the host) */
|
||||
if (strcmp (ep->name, EP_IN_NAME) == 0) {
|
||||
d = ep_desc (gadget, &hs_source_desc, &fs_source_desc);
|
||||
result = usb_ep_enable (ep, d);
|
||||
if (strcmp(ep->name, EP_IN_NAME) == 0) {
|
||||
d = ep_desc(gadget, &hs_source_desc, &fs_source_desc);
|
||||
result = usb_ep_enable(ep, d);
|
||||
if (result == 0) {
|
||||
ep->driver_data = dev;
|
||||
if (source_sink_start_ep(ep) != NULL) {
|
||||
dev->in_ep = ep;
|
||||
continue;
|
||||
}
|
||||
usb_ep_disable (ep);
|
||||
usb_ep_disable(ep);
|
||||
result = -EIO;
|
||||
}
|
||||
|
||||
/* one endpoint reads (sinks) anything out (from the host) */
|
||||
} else if (strcmp (ep->name, EP_OUT_NAME) == 0) {
|
||||
d = ep_desc (gadget, &hs_sink_desc, &fs_sink_desc);
|
||||
result = usb_ep_enable (ep, d);
|
||||
} else if (strcmp(ep->name, EP_OUT_NAME) == 0) {
|
||||
d = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc);
|
||||
result = usb_ep_enable(ep, d);
|
||||
if (result == 0) {
|
||||
ep->driver_data = dev;
|
||||
if (source_sink_start_ep(ep) != NULL) {
|
||||
dev->out_ep = ep;
|
||||
continue;
|
||||
}
|
||||
usb_ep_disable (ep);
|
||||
usb_ep_disable(ep);
|
||||
result = -EIO;
|
||||
}
|
||||
|
||||
|
|
@ -644,11 +629,11 @@ static int set_source_sink_config(struct zero_dev *dev)
|
|||
continue;
|
||||
|
||||
/* stop on error */
|
||||
ERROR (dev, "can't start %s, result %d\n", ep->name, result);
|
||||
ERROR(dev, "can't start %s, result %d\n", ep->name, result);
|
||||
break;
|
||||
}
|
||||
if (result == 0)
|
||||
DBG (dev, "buflen %d\n", buflen);
|
||||
DBG(dev, "buflen %d\n", buflen);
|
||||
|
||||
/* caller is responsible for cleanup on error */
|
||||
return result;
|
||||
|
|
@ -656,7 +641,7 @@ static int set_source_sink_config(struct zero_dev *dev)
|
|||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
|
||||
static void loopback_complete(struct usb_ep *ep, struct usb_request *req)
|
||||
{
|
||||
struct zero_dev *dev = ep->driver_data;
|
||||
int status = req->status;
|
||||
|
|
@ -668,19 +653,19 @@ static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
|
|||
/* loop this OUT packet back IN to the host */
|
||||
req->zero = (req->actual < req->length);
|
||||
req->length = req->actual;
|
||||
status = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC);
|
||||
status = usb_ep_queue(dev->in_ep, req, GFP_ATOMIC);
|
||||
if (status == 0)
|
||||
return;
|
||||
|
||||
/* "should never get here" */
|
||||
ERROR (dev, "can't loop %s to %s: %d\n",
|
||||
ERROR(dev, "can't loop %s to %s: %d\n",
|
||||
ep->name, dev->in_ep->name,
|
||||
status);
|
||||
}
|
||||
|
||||
/* queue the buffer for some later OUT packet */
|
||||
req->length = buflen;
|
||||
status = usb_ep_queue (dev->out_ep, req, GFP_ATOMIC);
|
||||
status = usb_ep_queue(dev->out_ep, req, GFP_ATOMIC);
|
||||
if (status == 0)
|
||||
return;
|
||||
|
||||
|
|
@ -688,7 +673,7 @@ static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
|
|||
/* FALLTHROUGH */
|
||||
|
||||
default:
|
||||
ERROR (dev, "%s loop complete --> %d, %d/%d\n", ep->name,
|
||||
ERROR(dev, "%s loop complete --> %d, %d/%d\n", ep->name,
|
||||
status, req->actual, req->length);
|
||||
/* FALLTHROUGH */
|
||||
|
||||
|
|
@ -700,7 +685,7 @@ static void loopback_complete (struct usb_ep *ep, struct usb_request *req)
|
|||
case -ECONNABORTED: /* hardware forced ep reset */
|
||||
case -ECONNRESET: /* request dequeued */
|
||||
case -ESHUTDOWN: /* disconnect from host */
|
||||
free_ep_req (ep, req);
|
||||
free_ep_req(ep, req);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
|
@ -711,13 +696,13 @@ static int set_loopback_config(struct zero_dev *dev)
|
|||
struct usb_ep *ep;
|
||||
struct usb_gadget *gadget = dev->gadget;
|
||||
|
||||
gadget_for_each_ep (ep, gadget) {
|
||||
gadget_for_each_ep(ep, gadget) {
|
||||
const struct usb_endpoint_descriptor *d;
|
||||
|
||||
/* one endpoint writes data back IN to the host */
|
||||
if (strcmp (ep->name, EP_IN_NAME) == 0) {
|
||||
d = ep_desc (gadget, &hs_source_desc, &fs_source_desc);
|
||||
result = usb_ep_enable (ep, d);
|
||||
if (strcmp(ep->name, EP_IN_NAME) == 0) {
|
||||
d = ep_desc(gadget, &hs_source_desc, &fs_source_desc);
|
||||
result = usb_ep_enable(ep, d);
|
||||
if (result == 0) {
|
||||
ep->driver_data = dev;
|
||||
dev->in_ep = ep;
|
||||
|
|
@ -725,9 +710,9 @@ static int set_loopback_config(struct zero_dev *dev)
|
|||
}
|
||||
|
||||
/* one endpoint just reads OUT packets */
|
||||
} else if (strcmp (ep->name, EP_OUT_NAME) == 0) {
|
||||
d = ep_desc (gadget, &hs_sink_desc, &fs_sink_desc);
|
||||
result = usb_ep_enable (ep, d);
|
||||
} else if (strcmp(ep->name, EP_OUT_NAME) == 0) {
|
||||
d = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc);
|
||||
result = usb_ep_enable(ep, d);
|
||||
if (result == 0) {
|
||||
ep->driver_data = dev;
|
||||
dev->out_ep = ep;
|
||||
|
|
@ -739,7 +724,7 @@ static int set_loopback_config(struct zero_dev *dev)
|
|||
continue;
|
||||
|
||||
/* stop on error */
|
||||
ERROR (dev, "can't enable %s, result %d\n", ep->name, result);
|
||||
ERROR(dev, "can't enable %s, result %d\n", ep->name, result);
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
@ -753,19 +738,19 @@ static int set_loopback_config(struct zero_dev *dev)
|
|||
|
||||
ep = dev->out_ep;
|
||||
for (i = 0; i < qlen && result == 0; i++) {
|
||||
req = alloc_ep_req (ep, buflen);
|
||||
req = alloc_ep_req(ep, buflen);
|
||||
if (req) {
|
||||
req->complete = loopback_complete;
|
||||
result = usb_ep_queue (ep, req, GFP_ATOMIC);
|
||||
result = usb_ep_queue(ep, req, GFP_ATOMIC);
|
||||
if (result)
|
||||
DBG (dev, "%s queue req --> %d\n",
|
||||
DBG(dev, "%s queue req --> %d\n",
|
||||
ep->name, result);
|
||||
} else
|
||||
result = -ENOMEM;
|
||||
}
|
||||
}
|
||||
if (result == 0)
|
||||
DBG (dev, "qlen %d, buflen %d\n", qlen, buflen);
|
||||
DBG(dev, "qlen %d, buflen %d\n", qlen, buflen);
|
||||
|
||||
/* caller is responsible for cleanup on error */
|
||||
return result;
|
||||
|
|
@ -773,26 +758,26 @@ static int set_loopback_config(struct zero_dev *dev)
|
|||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
static void zero_reset_config (struct zero_dev *dev)
|
||||
static void zero_reset_config(struct zero_dev *dev)
|
||||
{
|
||||
if (dev->config == 0)
|
||||
return;
|
||||
|
||||
DBG (dev, "reset config\n");
|
||||
DBG(dev, "reset config\n");
|
||||
|
||||
/* just disable endpoints, forcing completion of pending i/o.
|
||||
* all our completion handlers free their requests in this case.
|
||||
*/
|
||||
if (dev->in_ep) {
|
||||
usb_ep_disable (dev->in_ep);
|
||||
usb_ep_disable(dev->in_ep);
|
||||
dev->in_ep = NULL;
|
||||
}
|
||||
if (dev->out_ep) {
|
||||
usb_ep_disable (dev->out_ep);
|
||||
usb_ep_disable(dev->out_ep);
|
||||
dev->out_ep = NULL;
|
||||
}
|
||||
dev->config = 0;
|
||||
del_timer (&dev->resume);
|
||||
del_timer(&dev->resume);
|
||||
}
|
||||
|
||||
/* change our operational config. this code must agree with the code
|
||||
|
|
@ -813,12 +798,12 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
|
|||
if (number == dev->config)
|
||||
return 0;
|
||||
|
||||
if (gadget_is_sa1100 (gadget) && dev->config) {
|
||||
if (gadget_is_sa1100(gadget) && dev->config) {
|
||||
/* tx fifo is full, but we can't clear it...*/
|
||||
ERROR(dev, "can't change configurations\n");
|
||||
return -ESPIPE;
|
||||
}
|
||||
zero_reset_config (dev);
|
||||
zero_reset_config(dev);
|
||||
|
||||
switch (number) {
|
||||
case CONFIG_SOURCE_SINK:
|
||||
|
|
@ -837,7 +822,7 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
|
|||
if (!result && (!dev->in_ep || !dev->out_ep))
|
||||
result = -ENODEV;
|
||||
if (result)
|
||||
zero_reset_config (dev);
|
||||
zero_reset_config(dev);
|
||||
else {
|
||||
char *speed;
|
||||
|
||||
|
|
@ -849,7 +834,7 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
|
|||
}
|
||||
|
||||
dev->config = number;
|
||||
INFO (dev, "%s speed config #%d: %s\n", speed, number,
|
||||
INFO(dev, "%s speed config #%d: %s\n", speed, number,
|
||||
(number == CONFIG_SOURCE_SINK)
|
||||
? source_sink : loopback);
|
||||
}
|
||||
|
|
@ -858,10 +843,10 @@ static int zero_set_config(struct zero_dev *dev, unsigned number)
|
|||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
|
||||
static void zero_setup_complete(struct usb_ep *ep, struct usb_request *req)
|
||||
{
|
||||
if (req->status || req->actual != req->length)
|
||||
DBG ((struct zero_dev *) ep->driver_data,
|
||||
DBG((struct zero_dev *) ep->driver_data,
|
||||
"setup complete --> %d, %d/%d\n",
|
||||
req->status, req->actual, req->length);
|
||||
}
|
||||
|
|
@ -874,9 +859,9 @@ static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
|
|||
* the work is in config-specific setup.
|
||||
*/
|
||||
static int
|
||||
zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
||||
zero_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
||||
{
|
||||
struct zero_dev *dev = get_gadget_data (gadget);
|
||||
struct zero_dev *dev = get_gadget_data(gadget);
|
||||
struct usb_request *req = dev->req;
|
||||
int value = -EOPNOTSUPP;
|
||||
u16 w_index = le16_to_cpu(ctrl->wIndex);
|
||||
|
|
@ -895,14 +880,14 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
switch (w_value >> 8) {
|
||||
|
||||
case USB_DT_DEVICE:
|
||||
value = min (w_length, (u16) sizeof device_desc);
|
||||
memcpy (req->buf, &device_desc, value);
|
||||
value = min(w_length, (u16) sizeof device_desc);
|
||||
memcpy(req->buf, &device_desc, value);
|
||||
break;
|
||||
case USB_DT_DEVICE_QUALIFIER:
|
||||
if (!gadget_is_dualspeed(gadget))
|
||||
break;
|
||||
value = min (w_length, (u16) sizeof dev_qualifier);
|
||||
memcpy (req->buf, &dev_qualifier, value);
|
||||
value = min(w_length, (u16) sizeof dev_qualifier);
|
||||
memcpy(req->buf, &dev_qualifier, value);
|
||||
break;
|
||||
|
||||
case USB_DT_OTHER_SPEED_CONFIG:
|
||||
|
|
@ -910,11 +895,11 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
break;
|
||||
// FALLTHROUGH
|
||||
case USB_DT_CONFIG:
|
||||
value = config_buf (gadget, req->buf,
|
||||
value = config_buf(gadget, req->buf,
|
||||
w_value >> 8,
|
||||
w_value & 0xff);
|
||||
if (value >= 0)
|
||||
value = min (w_length, (u16) value);
|
||||
value = min(w_length, (u16) value);
|
||||
break;
|
||||
|
||||
case USB_DT_STRING:
|
||||
|
|
@ -923,10 +908,10 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
* add string tables for other languages, using
|
||||
* any UTF-8 characters
|
||||
*/
|
||||
value = usb_gadget_get_string (&stringtab,
|
||||
value = usb_gadget_get_string(&stringtab,
|
||||
w_value & 0xff, req->buf);
|
||||
if (value >= 0)
|
||||
value = min (w_length, (u16) value);
|
||||
value = min(w_length, (u16) value);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
|
@ -936,20 +921,20 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
if (ctrl->bRequestType != 0)
|
||||
goto unknown;
|
||||
if (gadget->a_hnp_support)
|
||||
DBG (dev, "HNP available\n");
|
||||
DBG(dev, "HNP available\n");
|
||||
else if (gadget->a_alt_hnp_support)
|
||||
DBG (dev, "HNP needs a different root port\n");
|
||||
DBG(dev, "HNP needs a different root port\n");
|
||||
else
|
||||
VDBG (dev, "HNP inactive\n");
|
||||
spin_lock (&dev->lock);
|
||||
VDBG(dev, "HNP inactive\n");
|
||||
spin_lock(&dev->lock);
|
||||
value = zero_set_config(dev, w_value);
|
||||
spin_unlock (&dev->lock);
|
||||
spin_unlock(&dev->lock);
|
||||
break;
|
||||
case USB_REQ_GET_CONFIGURATION:
|
||||
if (ctrl->bRequestType != USB_DIR_IN)
|
||||
goto unknown;
|
||||
*(u8 *)req->buf = dev->config;
|
||||
value = min (w_length, (u16) 1);
|
||||
value = min(w_length, (u16) 1);
|
||||
break;
|
||||
|
||||
/* until we add altsetting support, or other interfaces,
|
||||
|
|
@ -959,7 +944,7 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
case USB_REQ_SET_INTERFACE:
|
||||
if (ctrl->bRequestType != USB_RECIP_INTERFACE)
|
||||
goto unknown;
|
||||
spin_lock (&dev->lock);
|
||||
spin_lock(&dev->lock);
|
||||
if (dev->config && w_index == 0 && w_value == 0) {
|
||||
u8 config = dev->config;
|
||||
|
||||
|
|
@ -970,11 +955,11 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
* if we had more than one interface we couldn't
|
||||
* use this "reset the config" shortcut.
|
||||
*/
|
||||
zero_reset_config (dev);
|
||||
zero_reset_config(dev);
|
||||
zero_set_config(dev, config);
|
||||
value = 0;
|
||||
}
|
||||
spin_unlock (&dev->lock);
|
||||
spin_unlock(&dev->lock);
|
||||
break;
|
||||
case USB_REQ_GET_INTERFACE:
|
||||
if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE))
|
||||
|
|
@ -986,7 +971,7 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
break;
|
||||
}
|
||||
*(u8 *)req->buf = 0;
|
||||
value = min (w_length, (u16) 1);
|
||||
value = min(w_length, (u16) 1);
|
||||
break;
|
||||
|
||||
/*
|
||||
|
|
@ -1018,7 +1003,7 @@ zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
|
|||
|
||||
default:
|
||||
unknown:
|
||||
VDBG (dev,
|
||||
VDBG(dev,
|
||||
"unknown control req%02x.%02x v%04x i%04x l%d\n",
|
||||
ctrl->bRequestType, ctrl->bRequest,
|
||||
w_value, w_index, w_length);
|
||||
|
|
@ -1028,11 +1013,11 @@ unknown:
|
|||
if (value >= 0) {
|
||||
req->length = value;
|
||||
req->zero = value < w_length;
|
||||
value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
|
||||
value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
|
||||
if (value < 0) {
|
||||
DBG (dev, "ep_queue --> %d\n", value);
|
||||
DBG(dev, "ep_queue --> %d\n", value);
|
||||
req->status = 0;
|
||||
zero_setup_complete (gadget->ep0, req);
|
||||
zero_setup_complete(gadget->ep0, req);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1040,28 +1025,26 @@ unknown:
|
|||
return value;
|
||||
}
|
||||
|
||||
static void
|
||||
zero_disconnect (struct usb_gadget *gadget)
|
||||
static void zero_disconnect(struct usb_gadget *gadget)
|
||||
{
|
||||
struct zero_dev *dev = get_gadget_data (gadget);
|
||||
struct zero_dev *dev = get_gadget_data(gadget);
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave (&dev->lock, flags);
|
||||
zero_reset_config (dev);
|
||||
spin_lock_irqsave(&dev->lock, flags);
|
||||
zero_reset_config(dev);
|
||||
|
||||
/* a more significant application might have some non-usb
|
||||
* activities to quiesce here, saving resources like power
|
||||
* or pushing the notification up a network stack.
|
||||
*/
|
||||
spin_unlock_irqrestore (&dev->lock, flags);
|
||||
spin_unlock_irqrestore(&dev->lock, flags);
|
||||
|
||||
/* next we may get setup() calls to enumerate new connections;
|
||||
* or an unbind() during shutdown (including removing module).
|
||||
*/
|
||||
}
|
||||
|
||||
static void
|
||||
zero_autoresume (unsigned long _dev)
|
||||
static void zero_autoresume(unsigned long _dev)
|
||||
{
|
||||
struct zero_dev *dev = (struct zero_dev *) _dev;
|
||||
int status;
|
||||
|
|
@ -1070,32 +1053,30 @@ zero_autoresume (unsigned long _dev)
|
|||
* more significant than just a timer firing...
|
||||
*/
|
||||
if (dev->gadget->speed != USB_SPEED_UNKNOWN) {
|
||||
status = usb_gadget_wakeup (dev->gadget);
|
||||
DBG (dev, "wakeup --> %d\n", status);
|
||||
status = usb_gadget_wakeup(dev->gadget);
|
||||
DBG(dev, "wakeup --> %d\n", status);
|
||||
}
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
static void /* __init_or_exit */
|
||||
zero_unbind (struct usb_gadget *gadget)
|
||||
static void zero_unbind(struct usb_gadget *gadget)
|
||||
{
|
||||
struct zero_dev *dev = get_gadget_data (gadget);
|
||||
struct zero_dev *dev = get_gadget_data(gadget);
|
||||
|
||||
DBG (dev, "unbind\n");
|
||||
DBG(dev, "unbind\n");
|
||||
|
||||
/* we've already been disconnected ... no i/o is active */
|
||||
if (dev->req) {
|
||||
dev->req->length = USB_BUFSIZ;
|
||||
free_ep_req (gadget->ep0, dev->req);
|
||||
free_ep_req(gadget->ep0, dev->req);
|
||||
}
|
||||
del_timer_sync (&dev->resume);
|
||||
kfree (dev);
|
||||
set_gadget_data (gadget, NULL);
|
||||
del_timer_sync(&dev->resume);
|
||||
kfree(dev);
|
||||
set_gadget_data(gadget, NULL);
|
||||
}
|
||||
|
||||
static int __init
|
||||
zero_bind (struct usb_gadget *gadget)
|
||||
static int __init zero_bind(struct usb_gadget *gadget)
|
||||
{
|
||||
struct zero_dev *dev;
|
||||
struct usb_ep *ep;
|
||||
|
|
@ -1111,8 +1092,8 @@ zero_bind (struct usb_gadget *gadget)
|
|||
* autoconfigure on any sane usb controller driver,
|
||||
* but there may also be important quirks to address.
|
||||
*/
|
||||
usb_ep_autoconfig_reset (gadget);
|
||||
ep = usb_ep_autoconfig (gadget, &fs_source_desc);
|
||||
usb_ep_autoconfig_reset(gadget);
|
||||
ep = usb_ep_autoconfig(gadget, &fs_source_desc);
|
||||
if (!ep) {
|
||||
autoconf_fail:
|
||||
pr_err("%s: can't autoconfigure on %s\n",
|
||||
|
|
@ -1122,15 +1103,15 @@ autoconf_fail:
|
|||
EP_IN_NAME = ep->name;
|
||||
ep->driver_data = ep; /* claim */
|
||||
|
||||
ep = usb_ep_autoconfig (gadget, &fs_sink_desc);
|
||||
ep = usb_ep_autoconfig(gadget, &fs_sink_desc);
|
||||
if (!ep)
|
||||
goto autoconf_fail;
|
||||
EP_OUT_NAME = ep->name;
|
||||
ep->driver_data = ep; /* claim */
|
||||
|
||||
gcnum = usb_gadget_controller_number (gadget);
|
||||
gcnum = usb_gadget_controller_number(gadget);
|
||||
if (gcnum >= 0)
|
||||
device_desc.bcdDevice = cpu_to_le16 (0x0200 + gcnum);
|
||||
device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
|
||||
else {
|
||||
/* gadget zero is so simple (for now, no altsettings) that
|
||||
* it SHOULD NOT have problems with bulk-capable hardware.
|
||||
|
|
@ -1141,7 +1122,7 @@ autoconf_fail:
|
|||
*/
|
||||
pr_warning("%s: controller '%s' not recognized\n",
|
||||
shortname, gadget->name);
|
||||
device_desc.bcdDevice = __constant_cpu_to_le16 (0x9999);
|
||||
device_desc.bcdDevice = __constant_cpu_to_le16(0x9999);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -1149,12 +1130,12 @@ autoconf_fail:
|
|||
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
||||
if (!dev)
|
||||
return -ENOMEM;
|
||||
spin_lock_init (&dev->lock);
|
||||
spin_lock_init(&dev->lock);
|
||||
dev->gadget = gadget;
|
||||
set_gadget_data (gadget, dev);
|
||||
set_gadget_data(gadget, dev);
|
||||
|
||||
/* preallocate control response and buffer */
|
||||
dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
|
||||
dev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL);
|
||||
if (!dev->req)
|
||||
goto enomem;
|
||||
dev->req->buf = kmalloc(USB_BUFSIZ, GFP_KERNEL);
|
||||
|
|
@ -1182,9 +1163,9 @@ autoconf_fail:
|
|||
loopback_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
|
||||
}
|
||||
|
||||
usb_gadget_set_selfpowered (gadget);
|
||||
usb_gadget_set_selfpowered(gadget);
|
||||
|
||||
init_timer (&dev->resume);
|
||||
init_timer(&dev->resume);
|
||||
dev->resume.function = zero_autoresume;
|
||||
dev->resume.data = (unsigned long) dev;
|
||||
if (autoresume) {
|
||||
|
|
@ -1194,45 +1175,43 @@ autoconf_fail:
|
|||
|
||||
gadget->ep0->driver_data = dev;
|
||||
|
||||
INFO (dev, "%s, version: " DRIVER_VERSION "\n", longname);
|
||||
INFO (dev, "using %s, OUT %s IN %s\n", gadget->name,
|
||||
INFO(dev, "%s, version: " DRIVER_VERSION "\n", longname);
|
||||
INFO(dev, "using %s, OUT %s IN %s\n", gadget->name,
|
||||
EP_OUT_NAME, EP_IN_NAME);
|
||||
|
||||
snprintf (manufacturer, sizeof manufacturer, "%s %s with %s",
|
||||
snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
|
||||
init_utsname()->sysname, init_utsname()->release,
|
||||
gadget->name);
|
||||
|
||||
return 0;
|
||||
|
||||
enomem:
|
||||
zero_unbind (gadget);
|
||||
zero_unbind(gadget);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
static void
|
||||
zero_suspend (struct usb_gadget *gadget)
|
||||
static void zero_suspend(struct usb_gadget *gadget)
|
||||
{
|
||||
struct zero_dev *dev = get_gadget_data (gadget);
|
||||
struct zero_dev *dev = get_gadget_data(gadget);
|
||||
|
||||
if (gadget->speed == USB_SPEED_UNKNOWN)
|
||||
return;
|
||||
|
||||
if (autoresume) {
|
||||
mod_timer (&dev->resume, jiffies + (HZ * autoresume));
|
||||
DBG (dev, "suspend, wakeup in %d seconds\n", autoresume);
|
||||
mod_timer(&dev->resume, jiffies + (HZ * autoresume));
|
||||
DBG(dev, "suspend, wakeup in %d seconds\n", autoresume);
|
||||
} else
|
||||
DBG (dev, "suspend\n");
|
||||
DBG(dev, "suspend\n");
|
||||
}
|
||||
|
||||
static void
|
||||
zero_resume (struct usb_gadget *gadget)
|
||||
static void zero_resume(struct usb_gadget *gadget)
|
||||
{
|
||||
struct zero_dev *dev = get_gadget_data (gadget);
|
||||
struct zero_dev *dev = get_gadget_data(gadget);
|
||||
|
||||
DBG (dev, "resume\n");
|
||||
del_timer (&dev->resume);
|
||||
DBG(dev, "resume\n");
|
||||
del_timer(&dev->resume);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -1264,15 +1243,15 @@ MODULE_AUTHOR("David Brownell");
|
|||
MODULE_LICENSE("GPL");
|
||||
|
||||
|
||||
static int __init init (void)
|
||||
static int __init init(void)
|
||||
{
|
||||
return usb_gadget_register_driver (&zero_driver);
|
||||
return usb_gadget_register_driver(&zero_driver);
|
||||
}
|
||||
module_init (init);
|
||||
module_init(init);
|
||||
|
||||
static void __exit cleanup (void)
|
||||
static void __exit cleanup(void)
|
||||
{
|
||||
usb_gadget_unregister_driver (&zero_driver);
|
||||
usb_gadget_unregister_driver(&zero_driver);
|
||||
}
|
||||
module_exit (cleanup);
|
||||
module_exit(cleanup);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue