[U-Boot,v3,04/10] usb: host: xhci-rockchip: add support for rk3328

Add the compatible "rockchip,rk3328-xhci" in match table
for rk3328 to probe xhci controller. Use fixed regulator
to control the voltage of vbus and turn off vbus when
usb stop.

Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

Changes in v3: None

Changes in v2:
- Use fixed regulator to control vbus instead of gpio

 drivers/usb/host/xhci-rockchip.c | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)

On 06/06/2017 12:31 PM, Meng Dongyang wrote:
> Add the compatible "rockchip,rk3328-xhci" in match table
> for rk3328 to probe xhci controller. Use fixed regulator
> to control the voltage of vbus and turn off vbus when
> usb stop.

That's two patches in one, please split.

> Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>
> Reviewed-by: Simon Glass <sjg@chromium.org>
> ---
> 
> Changes in v3: None
> 
> Changes in v2:
> - Use fixed regulator to control vbus instead of gpio
> 
>  drivers/usb/host/xhci-rockchip.c | 31 ++++++++++++++++++++++---------
>  1 file changed, 22 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci-rockchip.c b/drivers/usb/host/xhci-rockchip.c
> index f559830..dd3bb6c 100644
> --- a/drivers/usb/host/xhci-rockchip.c
> +++ b/drivers/usb/host/xhci-rockchip.c
> @@ -11,10 +11,10 @@
>  #include <malloc.h>
>  #include <usb.h>
>  #include <watchdog.h>
> -#include <asm/gpio.h>
>  #include <linux/errno.h>
>  #include <linux/compat.h>
>  #include <linux/usb/dwc3.h>
> +#include <power/regulator.h>
>  
>  #include "xhci.h"
>  
> @@ -23,7 +23,7 @@ DECLARE_GLOBAL_DATA_PTR;
>  struct rockchip_xhci_platdata {
>  	fdt_addr_t hcd_base;
>  	fdt_addr_t phy_base;
> -	struct gpio_desc vbus_gpio;
> +	struct udevice *vbus_supply;
>  };
>  
>  /*
> @@ -66,11 +66,13 @@ static int xhci_usb_ofdata_to_platdata(struct udevice *dev)
>  		return -ENXIO;
>  	}
>  
> -	/* Vbus gpio */
> -	ret = gpio_request_by_name(dev, "rockchip,vbus-gpio", 0,
> -				   &plat->vbus_gpio, GPIOD_IS_OUT);
> +#if defined(CONFIG_DM_USB) && defined(CONFIG_DM_REGULATOR)
> +	/* Vbus regulator */
> +	ret = device_get_supply_regulator(dev, "vbus-supply",
> +					  &plat->vbus_supply);
>  	if (ret)
> -		debug("rockchip,vbus-gpio node missing!");
> +		debug("Can't get vbus supply\n");
> +#endif
>  
>  	return 0;
>  }
> @@ -153,9 +155,11 @@ static int xhci_usb_probe(struct udevice *dev)
>  	hcor = (struct xhci_hcor *)((uint64_t)ctx->hcd +
>  			HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase)));
>  
> -	/* setup the Vbus gpio here */
> -	if (dm_gpio_is_valid(&plat->vbus_gpio))
> -		dm_gpio_set_value(&plat->vbus_gpio, 1);
> +#if defined(CONFIG_DM_USB) && defined(CONFIG_DM_REGULATOR)
> +	ret = regulator_set_enable(plat->vbus_supply, true);
> +	if (ret)
> +		debug("XHCI: Failed to enable vbus supply\n");
> +#endif
>  
>  	ret = rockchip_xhci_core_init(ctx, dev);
>  	if (ret) {
> @@ -168,6 +172,7 @@ static int xhci_usb_probe(struct udevice *dev)
>  
>  static int xhci_usb_remove(struct udevice *dev)
>  {
> +	struct rockchip_xhci_platdata *plat = dev_get_platdata(dev);
>  	struct rockchip_xhci *ctx = dev_get_priv(dev);
>  	int ret;
>  
> @@ -178,11 +183,18 @@ static int xhci_usb_remove(struct udevice *dev)
>  	if (ret)
>  		return ret;
>  
> +#if defined(CONFIG_DM_USB) && defined(CONFIG_DM_REGULATOR)
> +	ret = regulator_set_enable(plat->vbus_supply, false);

Shouldn't this be defined as empty function if the above macros aren't set ?

> +	if (ret)
> +		debug("XHCI: Failed to disable vbus supply\n");
> +#endif
> +
>  	return 0;
>  }
>  
>  static const struct udevice_id xhci_usb_ids[] = {
>  	{ .compatible = "rockchip,rk3399-xhci" },
> +	{ .compatible = "rockchip,rk3328-xhci" },
>  	{ }
>  };
>  
> @@ -202,6 +214,7 @@ U_BOOT_DRIVER(usb_xhci) = {
>  
>  static const struct udevice_id usb_phy_ids[] = {
>  	{ .compatible = "rockchip,rk3399-usb3-phy" },
> +	{ .compatible = "rockchip,rk3328-usb3-phy" },
>  	{ }
>  };
>  
>