[U-Boot] [u-boot 27/40] dwc3: dwc3-omap: add support for multiple dwc3-omap controllers

[Lukasz Majewski]

Hi Kishon,

> Added support for multiple dwc3 omap controllers. This gives uboot
> the capability to control multiple dwc3 omap controllers.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon at ti.com>
> ---
>  drivers/usb/dwc3/dwc3-omap.c |   26 ++++++++++++++++++++------
>  include/dwc3-omap-uboot.h    |    3 ++-
>  2 files changed, 22 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/usb/dwc3/dwc3-omap.c
> b/drivers/usb/dwc3/dwc3-omap.c index 30d7210..c8275c7 100644
> --- a/drivers/usb/dwc3/dwc3-omap.c
> +++ b/drivers/usb/dwc3/dwc3-omap.c
> @@ -119,9 +119,11 @@ struct dwc3_omap {
>  	u32			irq0_offset;
>  
>  	u32			dma_status:1;
> +	struct list_head	list;
> +	u32			index;
>  };
>  
> -struct dwc3_omap *omap;
> +static LIST_HEAD(dwc3_omap_list);
>  
>  static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)
>  {
> @@ -363,12 +365,14 @@ int dwc3_omap_uboot_init(struct
> dwc3_omap_device *omap_dev) {
>  	u32			reg;
>  	struct device		*dev;
> +	struct dwc3_omap	*omap;
>  
>  	omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
>  	if (!omap)
>  		return -ENOMEM;
>  
>  	omap->base	= omap_dev->base;
> +	omap->index	= omap_dev->index;
>  
>  	dwc3_omap_map_offset(omap);
>  	dwc3_omap_set_utmi_mode(omap, omap_dev->utmi_mode);
> @@ -380,6 +384,7 @@ int dwc3_omap_uboot_init(struct dwc3_omap_device
> *omap_dev) dwc3_omap_set_mailbox(omap, omap_dev->vbus_id_status);
>  
>  	dwc3_omap_enable_irqs(omap);
> +	list_add_tail(&omap->list, &dwc3_omap_list);
>  
>  	return 0;
>  }
> @@ -389,16 +394,25 @@ int dwc3_omap_uboot_init(struct
> dwc3_omap_device *omap_dev)
>   * @index: index of this controller
>   *
>   * Performs cleanup of memory allocated in dwc3_omap_uboot_init
> - * (equivalent to dwc3_omap_remove in linux).
> + * (equivalent to dwc3_omap_remove in linux). index of _this_
> controller
> + * should be passed and should match with the index passed in
> + * dwc3_omap_device during init.
>   *
>   * Generally called from board file.
>   */
> -void dwc3_omap_uboot_exit(void)
> +void dwc3_omap_uboot_exit(int index)
>  {
> -	dwc3_omap_disable_irqs(omap);
> -	kfree(omap);
> +	struct dwc3_omap *omap = NULL;
>  
> -	return 0;
> +	list_for_each_entry(omap, &dwc3_omap_list, list) {
> +		if (omap->index != index)
> +			continue;
> +
> +		dwc3_omap_disable_irqs(omap);
> +		list_del(&omap->list);
> +		kfree(omap);
> +		break;
> +	}
>  }
>  
>  MODULE_ALIAS("platform:omap-dwc3");
> diff --git a/include/dwc3-omap-uboot.h b/include/dwc3-omap-uboot.h
> index 99f8f38..29f02f8 100644
> --- a/include/dwc3-omap-uboot.h
> +++ b/include/dwc3-omap-uboot.h
> @@ -21,10 +21,11 @@ enum omap_dwc3_vbus_id_status {
>  
>  struct dwc3_omap_device {
>  	void *base;
> +	int index;
>  	enum dwc3_omap_utmi_mode utmi_mode;
>  	enum omap_dwc3_vbus_id_status vbus_id_status;
>  };
>  
>  int dwc3_omap_uboot_init(struct dwc3_omap_device *dev);
> -void dwc3_omap_uboot_exit(void);
> +void dwc3_omap_uboot_exit(int index);
>  #endif /* __DWC3_OMAP_UBOOT_H_ */

Reviewed-by: Lukasz Majewski <l.majewski at samsung.com>

-- 
Best regards,

Lukasz Majewski

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