[U-Boot] [PATCH 1/2] usb, g_dnl: generalize DFU detach functions

[Lukasz Majewski <l.majewski@samsung.com>]

Hi Rob,

> From: Rob Herring <robh@kernel.org>
> 
> In order to add detach functions for fastboot, make the DFU detach
> related functions common so they can be shared.
> 
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
>  common/cmd_dfu.c           |  6 +++---
>  drivers/dfu/dfu.c          | 16 ----------------
>  drivers/usb/gadget/f_dfu.c |  2 +-
>  drivers/usb/gadget/g_dnl.c | 17 +++++++++++++++++
>  include/dfu.h              |  3 ---
>  include/g_dnl.h            |  4 ++++
>  6 files changed, 25 insertions(+), 23 deletions(-)
> 
> diff --git a/common/cmd_dfu.c b/common/cmd_dfu.c
> index 9e020b4..e975abe 100644
> --- a/common/cmd_dfu.c
> +++ b/common/cmd_dfu.c
> @@ -38,10 +38,10 @@ static int do_dfu(cmd_tbl_t *cmdtp, int flag, int
> argc, char * const argv[]) 
>  	int controller_index = simple_strtoul(usb_controller, NULL,
> 0); board_usb_init(controller_index, USB_INIT_DEVICE);
> -	dfu_clear_detach();
> +	g_dnl_clear_detach();
>  	g_dnl_register("usb_dnl_dfu");
>  	while (1) {
> -		if (dfu_detach()) {
> +		if (g_dnl_detach()) {
>  			/*
>  			 * Check if USB bus reset is performed after
> detach,
>  			 * which indicates that -R switch has been
> passed to @@ -74,7 +74,7 @@ done:
>  	if (dfu_reset)
>  		run_command("reset", 0);
>  
> -	dfu_clear_detach();
> +	g_dnl_clear_detach();
>  
>  	return ret;
>  }
> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
> index c0aba6e..a3e3ec5 100644
> --- a/drivers/dfu/dfu.c
> +++ b/drivers/dfu/dfu.c
> @@ -17,7 +17,6 @@
>  #include <linux/list.h>
>  #include <linux/compiler.h>
>  
> -static bool dfu_detach_request;
>  static LIST_HEAD(dfu_list);
>  static int dfu_alt_num;
>  static int alt_num_cnt;
> @@ -39,21 +38,6 @@ __weak bool dfu_usb_get_reset(void)
>  	return true;
>  }
>  
> -bool dfu_detach(void)
> -{
> -	return dfu_detach_request;
> -}
> -
> -void dfu_trigger_detach(void)
> -{
> -	dfu_detach_request = true;
> -}
> -
> -void dfu_clear_detach(void)
> -{
> -	dfu_detach_request = false;
> -}
> -
>  static int dfu_find_alt_num(const char *s)
>  {
>  	int i = 0;
> diff --git a/drivers/usb/gadget/f_dfu.c b/drivers/usb/gadget/f_dfu.c
> index 16fc9dd..ead71eb 100644
> --- a/drivers/usb/gadget/f_dfu.c
> +++ b/drivers/usb/gadget/f_dfu.c
> @@ -366,7 +366,7 @@ static int state_dfu_idle(struct f_dfu *f_dfu,
>  		to_runtime_mode(f_dfu);
>  		f_dfu->dfu_state = DFU_STATE_appIDLE;
>  
> -		dfu_trigger_detach();
> +		g_dnl_trigger_detach();
>  		break;
>  	default:
>  		f_dfu->dfu_state = DFU_STATE_dfuERROR;
> diff --git a/drivers/usb/gadget/g_dnl.c b/drivers/usb/gadget/g_dnl.c
> index 25611ac..ee52a29 100644
> --- a/drivers/usb/gadget/g_dnl.c
> +++ b/drivers/usb/gadget/g_dnl.c
> @@ -163,6 +163,23 @@ __weak int g_dnl_board_usb_cable_connected(void)
>  	return -EOPNOTSUPP;
>  }
>  
> +static bool g_dnl_detach_request;
> +
> +bool g_dnl_detach(void)
> +{
> +	return g_dnl_detach_request;
> +}
> +
> +void g_dnl_trigger_detach(void)
> +{
> +	g_dnl_detach_request = true;
> +}
> +
> +void g_dnl_clear_detach(void)
> +{
> +	g_dnl_detach_request = false;
> +}
> +
>  static int g_dnl_get_bcd_device_number(struct usb_composite_dev
> *cdev) {
>  	struct usb_gadget *gadget = cdev->gadget;
> diff --git a/include/dfu.h b/include/dfu.h
> index f1a71c7..c27856c 100644
> --- a/include/dfu.h
> +++ b/include/dfu.h
> @@ -150,9 +150,6 @@ struct dfu_entity *dfu_get_entity(int alt);
>  char *dfu_extract_token(char** e, int *n);
>  void dfu_trigger_reset(void);
>  int dfu_get_alt(char *name);
> -bool dfu_detach(void);
> -void dfu_trigger_detach(void);
> -void dfu_clear_detach(void);
>  int dfu_init_env_entities(char *interface, char *devstr);
>  unsigned char *dfu_get_buf(struct dfu_entity *dfu);
>  unsigned char *dfu_free_buf(void);
> diff --git a/include/g_dnl.h b/include/g_dnl.h
> index 1b1b35e..4eeb5e4 100644
> --- a/include/g_dnl.h
> +++ b/include/g_dnl.h
> @@ -39,4 +39,8 @@ int g_dnl_register(const char *s);
>  void g_dnl_unregister(void);
>  void g_dnl_set_serialnumber(char *);
>  
> +bool g_dnl_detach(void);
> +void g_dnl_trigger_detach(void);
> +void g_dnl_clear_detach(void);
> +
>  #endif /* __G_DOWNLOAD_H_ */

Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
(Test HW: Trats2 board)

I will add this patch to u-boot-dfu tree.

-- 
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group