From 1bcce939478f894b46a592aed28ccc9caaf1a52a Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Wed, 9 Oct 2013 10:08:27 +0200 Subject: [PATCH] usb: gadget: multi: convert to new interface of f_mass_storage Convert the legacy multi gadget to the new interface of f_mass_storage, so that later the compatibility layer in f_mass_storage can be removed. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Kconfig | 1 + drivers/usb/gadget/multi.c | 112 +++++++++++++++++++++++++++---------- 2 files changed, 83 insertions(+), 30 deletions(-) diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index bbcc313f0317..4b0c456f9d63 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -1038,6 +1038,7 @@ config USB_G_MULTI select USB_U_ETHER select USB_F_ACM select USB_U_MS + select USB_F_MASS_STORAGE help The Multifunction Composite Gadget provides Ethernet (RNDIS and/or CDC Ethernet), mass storage and ACM serial link diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index fceef0fc0860..4fdaa54a2a2a 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -33,17 +33,7 @@ MODULE_AUTHOR("Michal Nazarewicz"); MODULE_LICENSE("GPL"); -/***************************** All the files... *****************************/ - -/* - * 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. - */ -#define USB_FMS_INCLUDED -#include "f_mass_storage.c" +#include "f_mass_storage.h" #include "u_ecm.h" #ifdef USB_ETH_RNDIS @@ -148,9 +138,8 @@ static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS; FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); -static struct fsg_common fsg_common; - static struct usb_function_instance *fi_acm; +static struct usb_function_instance *fi_msg; /********** RNDIS **********/ @@ -158,9 +147,11 @@ static struct usb_function_instance *fi_acm; static struct usb_function_instance *fi_rndis; static struct usb_function *f_acm_rndis; static struct usb_function *f_rndis; +static struct usb_function *f_msg_rndis; static __init int rndis_do_config(struct usb_configuration *c) { + struct fsg_opts *fsg_opts; int ret; if (gadget_is_otg(c->cdev->gadget)) { @@ -186,11 +177,24 @@ static __init int rndis_do_config(struct usb_configuration *c) if (ret) goto err_conf; - ret = fsg_bind_config(c->cdev, c, &fsg_common); - if (ret < 0) + f_msg_rndis = usb_get_function(fi_msg); + if (IS_ERR(f_msg_rndis)) { + ret = PTR_ERR(f_msg_rndis); goto err_fsg; + } + + fsg_opts = fsg_opts_from_func_inst(fi_msg); + ret = fsg_common_run_thread(fsg_opts->common); + if (ret) + goto err_run; + + ret = usb_add_function(c, f_msg_rndis); + if (ret) + goto err_run; return 0; +err_run: + usb_put_function(f_msg_rndis); err_fsg: usb_remove_function(c, f_acm_rndis); err_conf: @@ -231,9 +235,11 @@ static __ref int rndis_config_register(struct usb_composite_dev *cdev) static struct usb_function_instance *fi_ecm; static struct usb_function *f_acm_multi; static struct usb_function *f_ecm; +static struct usb_function *f_msg_multi; static __init int cdc_do_config(struct usb_configuration *c) { + struct fsg_opts *fsg_opts; int ret; if (gadget_is_otg(c->cdev->gadget)) { @@ -260,11 +266,24 @@ static __init int cdc_do_config(struct usb_configuration *c) if (ret) goto err_conf; - ret = fsg_bind_config(c->cdev, c, &fsg_common); - if (ret < 0) + f_msg_multi = usb_get_function(fi_msg); + if (IS_ERR(f_msg_multi)) { + ret = PTR_ERR(f_msg_multi); goto err_fsg; + } + + fsg_opts = fsg_opts_from_func_inst(fi_msg); + ret = fsg_common_run_thread(fsg_opts->common); + if (ret) + goto err_run; + + ret = usb_add_function(c, f_msg_multi); + if (ret) + goto err_run; return 0; +err_run: + usb_put_function(f_msg_multi); err_fsg: usb_remove_function(c, f_acm_multi); err_conf: @@ -311,6 +330,8 @@ static int __ref multi_bind(struct usb_composite_dev *cdev) #ifdef USB_ETH_RNDIS struct f_rndis_opts *rndis_opts; #endif + struct fsg_opts *fsg_opts; + struct fsg_config config; int status; if (!can_support_ecm(cdev->gadget)) { @@ -373,41 +394,65 @@ static int __ref multi_bind(struct usb_composite_dev *cdev) } /* set up mass storage function */ - { - void *retp; - retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data, - fsg_num_buffers); - if (IS_ERR(retp)) { - status = PTR_ERR(retp); - goto fail1; - } + fi_msg = usb_get_function_instance("mass_storage"); + if (IS_ERR(fi_msg)) { + status = PTR_ERR(fi_msg); + goto fail1; } + fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers); + fsg_opts = fsg_opts_from_func_inst(fi_msg); + + fsg_opts->no_configfs = true; + status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers); + if (status) + goto fail2; + + status = fsg_common_set_nluns(fsg_opts->common, config.nluns); + if (status) + goto fail_set_nluns; + + status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall); + if (status) + goto fail_set_cdev; + + fsg_common_set_sysfs(fsg_opts->common, true); + status = fsg_common_create_luns(fsg_opts->common, &config); + if (status) + goto fail_set_cdev; + + fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name, + config.product_name); /* allocate string IDs */ status = usb_string_ids_tab(cdev, strings_dev); if (unlikely(status < 0)) - goto fail2; + goto fail_string_ids; device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; /* register configurations */ status = rndis_config_register(cdev); if (unlikely(status < 0)) - goto fail2; + goto fail_string_ids; status = cdc_config_register(cdev); if (unlikely(status < 0)) - goto fail2; + goto fail_string_ids; usb_composite_overwrite_options(cdev, &coverwrite); /* we're done */ dev_info(&gadget->dev, DRIVER_DESC "\n"); - fsg_common_put(&fsg_common); return 0; /* error recovery */ +fail_string_ids: + fsg_common_remove_luns(fsg_opts->common); +fail_set_cdev: + fsg_common_free_luns(fsg_opts->common); +fail_set_nluns: + fsg_common_free_buffers(fsg_opts->common); fail2: - fsg_common_put(&fsg_common); + usb_put_function_instance(fi_msg); fail1: usb_put_function_instance(fi_acm); fail0: @@ -423,6 +468,13 @@ fail: static int __exit multi_unbind(struct usb_composite_dev *cdev) { +#ifdef CONFIG_USB_G_MULTI_CDC + usb_put_function(f_msg_multi); +#endif +#ifdef USB_ETH_RNDIS + usb_put_function(f_msg_rndis); +#endif + usb_put_function_instance(fi_msg); #ifdef CONFIG_USB_G_MULTI_CDC usb_put_function(f_acm_multi); #endif -- 2.30.2