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-rw-r--r--drivers/usb/gadget/Kconfig2
-rw-r--r--drivers/usb/gadget/android.c73
-rw-r--r--drivers/usb/gadget/u_serial.c4
3 files changed, 58 insertions, 21 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 50508f19579..67409fda70d 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -820,7 +820,9 @@ config USB_G_PRINTER
config USB_G_ANDROID
boolean "Android Composite Gadget"
+ select USB_F_ACM
select USB_LIBCOMPOSITE
+ select USB_U_SERIAL
help
The Android Composite Gadget supports multiple USB
functions: adb, acm, mass storage, mtp, accessory
diff --git a/drivers/usb/gadget/android.c b/drivers/usb/gadget/android.c
index f5b00c12258..d0ec54b810c 100644
--- a/drivers/usb/gadget/android.c
+++ b/drivers/usb/gadget/android.c
@@ -33,9 +33,6 @@
#include "f_fs.c"
#include "f_audio_source.c"
#include "f_mass_storage.c"
-#include "u_serial.c"
-#define USB_FACM_INCLUDED
-#include "f_acm.c"
#include "f_mtp.c"
#include "f_accessory.c"
#define USB_ETH_RNDIS y
@@ -367,7 +364,9 @@ static void functionfs_release_dev_callback(struct ffs_data *ffs_data)
#define MAX_ACM_INSTANCES 4
struct acm_function_config {
int instances;
- unsigned char port_num[MAX_ACM_INSTANCES];
+ int instances_on;
+ struct usb_function *f_acm[MAX_ACM_INSTANCES];
+ struct usb_function_instance *f_acm_inst[MAX_ACM_INSTANCES];
};
static int
@@ -384,14 +383,24 @@ acm_function_init(struct android_usb_function *f,
f->config = config;
for (i = 0; i < MAX_ACM_INSTANCES; i++) {
- ret = gserial_alloc_line(&config->port_num[i]);
- if (ret)
- goto err_alloc_line;
+ config->f_acm_inst[i] = usb_get_function_instance("acm");
+ if (IS_ERR(config->f_acm_inst[i])) {
+ ret = PTR_ERR(config->f_acm_inst[i]);
+ goto err_usb_get_function_instance;
+ }
+ config->f_acm[i] = usb_get_function(config->f_acm_inst[i]);
+ if (IS_ERR(config->f_acm[i])) {
+ ret = PTR_ERR(config->f_acm[i]);
+ goto err_usb_get_function;
+ }
}
return 0;
-err_alloc_line:
- while (i-- > 0)
- gserial_free_line(config->port_num[i]);
+err_usb_get_function_instance:
+ while (i-- > 0) {
+ usb_put_function(config->f_acm[i]);
+err_usb_get_function:
+ usb_put_function_instance(config->f_acm_inst[i]);
+ }
return ret;
}
@@ -400,8 +409,10 @@ static void acm_function_cleanup(struct android_usb_function *f)
int i;
struct acm_function_config *config = f->config;
- for (i = 0; i < MAX_ACM_INSTANCES; i++)
- gserial_free_line(config->port_num[i]);
+ for (i = 0; i < MAX_ACM_INSTANCES; i++) {
+ usb_put_function(config->f_acm[i]);
+ usb_put_function_instance(config->f_acm_inst[i]);
+ }
kfree(f->config);
f->config = NULL;
}
@@ -414,17 +425,33 @@ acm_function_bind_config(struct android_usb_function *f,
int ret = 0;
struct acm_function_config *config = f->config;
- for (i = 0; i < config->instances; i++) {
- ret = acm_bind_config(c, i);
+ config->instances_on = config->instances;
+ for (i = 0; i < config->instances_on; i++) {
+ ret = usb_add_function(c, config->f_acm[i]);
if (ret) {
pr_err("Could not bind acm%u config\n", i);
- break;
+ goto err_usb_add_function;
}
}
+ return 0;
+
+err_usb_add_function:
+ while (i-- > 0)
+ usb_remove_function(c, config->f_acm[i]);
return ret;
}
+static void acm_function_unbind_config(struct android_usb_function *f,
+ struct usb_configuration *c)
+{
+ int i;
+ struct acm_function_config *config = f->config;
+
+ for (i = 0; i < config->instances_on; i++)
+ usb_remove_function(c, config->f_acm[i]);
+}
+
static ssize_t acm_instances_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -459,6 +486,7 @@ static struct android_usb_function acm_function = {
.init = acm_function_init,
.cleanup = acm_function_cleanup,
.bind_config = acm_function_bind_config,
+ .unbind_config = acm_function_unbind_config,
.attributes = acm_function_attributes,
};
@@ -532,6 +560,7 @@ struct rndis_function_config {
char manufacturer[256];
/* "Wireless" RNDIS; auto-detected by Windows */
bool wceis;
+ struct eth_dev *dev;
};
static int
@@ -555,6 +584,7 @@ rndis_function_bind_config(struct android_usb_function *f,
struct usb_configuration *c)
{
int ret;
+ struct eth_dev *dev;
struct rndis_function_config *rndis = f->config;
if (!rndis) {
@@ -566,11 +596,13 @@ rndis_function_bind_config(struct android_usb_function *f,
rndis->ethaddr[0], rndis->ethaddr[1], rndis->ethaddr[2],
rndis->ethaddr[3], rndis->ethaddr[4], rndis->ethaddr[5]);
- ret = gether_setup_name(c->cdev->gadget, rndis->ethaddr, "rndis");
- if (ret) {
+ dev = gether_setup_name(c->cdev->gadget, rndis->ethaddr, "rndis");
+ if (IS_ERR(dev)) {
+ ret = PTR_ERR(dev);
pr_err("%s: gether_setup failed\n", __func__);
return ret;
}
+ rndis->dev = dev;
if (rndis->wceis) {
/* "Wireless" RNDIS; auto-detected by Windows */
@@ -585,13 +617,14 @@ rndis_function_bind_config(struct android_usb_function *f,
}
return rndis_bind_config_vendor(c, rndis->ethaddr, rndis->vendorID,
- rndis->manufacturer);
+ rndis->manufacturer, rndis->dev);
}
static void rndis_function_unbind_config(struct android_usb_function *f,
struct usb_configuration *c)
{
- gether_cleanup();
+ struct rndis_function_config *rndis = f->config;
+ gether_cleanup(rndis->dev);
}
static ssize_t rndis_manufacturer_show(struct device *dev,
@@ -881,7 +914,7 @@ static ssize_t audio_source_pcm_show(struct device *dev,
return sprintf(buf, "%d %d\n", config->card, config->device);
}
-static DEVICE_ATTR(pcm, S_IRUGO | S_IWUSR, audio_source_pcm_show, NULL);
+static DEVICE_ATTR(pcm, S_IRUGO, audio_source_pcm_show, NULL);
static struct device_attribute *audio_source_function_attributes[] = {
&dev_attr_pcm,
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index 5946eb43d4f..72068082e83 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -1124,7 +1124,9 @@ int gserial_alloc_line(unsigned char *line_num)
/* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */
- tty_dev = tty_register_device(gs_tty_driver, port_num, NULL);
+ tty_dev = tty_port_register_device(&ports[port_num].port->port,
+ gs_tty_driver, port_num, NULL);
+
if (IS_ERR(tty_dev)) {
struct gs_port *port;
pr_err("%s: failed to register tty for port %d, err %ld\n",
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 03:40:40 +0000