summaryrefslogtreecommitdiff
path: root/drivers/usb/gadget/acm_ms.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/gadget/acm_ms.c')
-rw-r--r--drivers/usb/gadget/acm_ms.c125
1 files changed, 88 insertions, 37 deletions
diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c
index 4b947bb50f62..7bfa134fe0e3 100644
--- a/drivers/usb/gadget/acm_ms.c
+++ b/drivers/usb/gadget/acm_ms.c
@@ -31,16 +31,7 @@
#define ACM_MS_VENDOR_NUM 0x1d6b /* Linux Foundation */
#define ACM_MS_PRODUCT_NUM 0x0106 /* Composite Gadget: ACM + MS*/
-/*-------------------------------------------------------------------------*/
-
-/*
- * Kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#include "f_mass_storage.c"
+#include "f_mass_storage.h"
/*-------------------------------------------------------------------------*/
USB_GADGET_COMPOSITE_OPTIONS();
@@ -104,18 +95,35 @@ static struct usb_gadget_strings *dev_strings[] = {
/****************************** Configurations ******************************/
static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
-FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
-static struct fsg_common fsg_common;
+static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
+
+#else
+
+/*
+ * Number of buffers we will use.
+ * 2 is usually enough for good buffering pipeline
+ */
+#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
+
+#endif /* CONFIG_USB_DEBUG */
+
+FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
/*-------------------------------------------------------------------------*/
static struct usb_function *f_acm;
static struct usb_function_instance *f_acm_inst;
+
+static struct usb_function_instance *fi_msg;
+static struct usb_function *f_msg;
+
/*
* We _always_ have both ACM and mass storage functions.
*/
static int __init acm_ms_do_config(struct usb_configuration *c)
{
+ struct fsg_opts *opts;
int status;
if (gadget_is_otg(c->cdev->gadget)) {
@@ -123,31 +131,37 @@ static int __init acm_ms_do_config(struct usb_configuration *c)
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
- f_acm_inst = usb_get_function_instance("acm");
- if (IS_ERR(f_acm_inst))
- return PTR_ERR(f_acm_inst);
+ opts = fsg_opts_from_func_inst(fi_msg);
f_acm = usb_get_function(f_acm_inst);
- if (IS_ERR(f_acm)) {
- status = PTR_ERR(f_acm);
- goto err_func;
+ if (IS_ERR(f_acm))
+ return PTR_ERR(f_acm);
+
+ f_msg = usb_get_function(fi_msg);
+ if (IS_ERR(f_msg)) {
+ status = PTR_ERR(f_msg);
+ goto put_acm;
}
status = usb_add_function(c, f_acm);
if (status < 0)
- goto err_conf;
+ goto put_msg;
- status = fsg_bind_config(c->cdev, c, &fsg_common);
- if (status < 0)
- goto err_fsg;
+ status = fsg_common_run_thread(opts->common);
+ if (status)
+ goto remove_acm;
+
+ status = usb_add_function(c, f_msg);
+ if (status)
+ goto remove_acm;
return 0;
-err_fsg:
+remove_acm:
usb_remove_function(c, f_acm);
-err_conf:
+put_msg:
+ usb_put_function(f_msg);
+put_acm:
usb_put_function(f_acm);
-err_func:
- usb_put_function_instance(f_acm_inst);
return status;
}
@@ -163,45 +177,82 @@ static struct usb_configuration acm_ms_config_driver = {
static int __init acm_ms_bind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
+ struct fsg_opts *opts;
+ struct fsg_config config;
int status;
- void *retp;
- /* set up mass storage function */
- retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
- if (IS_ERR(retp)) {
- status = PTR_ERR(retp);
- return PTR_ERR(retp);
+ f_acm_inst = usb_get_function_instance("acm");
+ if (IS_ERR(f_acm_inst))
+ return PTR_ERR(f_acm_inst);
+
+ fi_msg = usb_get_function_instance("mass_storage");
+ if (IS_ERR(fi_msg)) {
+ status = PTR_ERR(fi_msg);
+ goto fail_get_msg;
}
+ /* set up mass storage function */
+ fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
+ opts = fsg_opts_from_func_inst(fi_msg);
+
+ opts->no_configfs = true;
+ status = fsg_common_set_num_buffers(opts->common, fsg_num_buffers);
+ if (status)
+ goto fail;
+
+ status = fsg_common_set_nluns(opts->common, config.nluns);
+ if (status)
+ goto fail_set_nluns;
+
+ status = fsg_common_set_cdev(opts->common, cdev, config.can_stall);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_sysfs(opts->common, true);
+ status = fsg_common_create_luns(opts->common, &config);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_inquiry_string(opts->common, config.vendor_name,
+ config.product_name);
/*
* Allocate string descriptor numbers ... note that string
* contents can be overridden by the composite_dev glue.
*/
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
- goto fail1;
+ goto fail_string_ids;
device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
/* register our configuration */
status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config);
if (status < 0)
- goto fail1;
+ goto fail_string_ids;
usb_composite_overwrite_options(cdev, &coverwrite);
dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n",
DRIVER_DESC);
- fsg_common_put(&fsg_common);
return 0;
/* error recovery */
-fail1:
- fsg_common_put(&fsg_common);
+fail_string_ids:
+ fsg_common_remove_luns(opts->common);
+fail_set_cdev:
+ fsg_common_free_luns(opts->common);
+fail_set_nluns:
+ fsg_common_free_buffers(opts->common);
+fail:
+ usb_put_function_instance(fi_msg);
+fail_get_msg:
+ usb_put_function_instance(f_acm_inst);
return status;
}
static int __exit acm_ms_unbind(struct usb_composite_dev *cdev)
{
+ usb_put_function(f_msg);
+ usb_put_function_instance(fi_msg);
usb_put_function(f_acm);
usb_put_function_instance(f_acm_inst);
return 0;