[PATCH v4][ 3/8] usb: chipidea: usbmisc: Add USB support for i.MX25/i.MX35 CPUs

[Peter Chen]

On Thu, Mar 13, 2014 at 10:18:41AM +0100, Denis Carikli wrote:
> This adds the i.MX25 and the i.MX35 support in the
> ChipIdea usbmisc driver.
> 
> The i.MX25 and i.MX35 usb controllers are similar enough to be
> able to use the same code.
> 
> Signed-off-by: Denis Carikli <denis at eukrea.com>
> ---
> Changelog v3->v4:
> - The MXC_EHCI_INTERFACE_* were renamed in MX25_EHCI_INTERFACE_*
> - Since the peripheral mode also works with USB OTG,
>   the commit summary was updated to reflect that.
> 
> Changelog v2->v3:
> - Add a commit log
> 
> Changelog v1->v2:
> - converted two remaining defines to BIT()
> - Removed a variable declaration that was not used in usbmisc_imx25_init
> ---
>  drivers/usb/chipidea/usbmisc_imx.c |   58 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 58 insertions(+)
> 
> diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
> index cd061ab..419b895 100644
> --- a/drivers/usb/chipidea/usbmisc_imx.c
> +++ b/drivers/usb/chipidea/usbmisc_imx.c
> @@ -21,6 +21,26 @@
>  #define MX25_USB_PHY_CTRL_OFFSET	0x08
>  #define MX25_BM_EXTERNAL_VBUS_DIVIDER	BIT(23)
>  
> +#define MX25_EHCI_INTERFACE_SINGLE_UNI	(2 << 0)
> +#define MX25_EHCI_INTERFACE_DIFF_UNI	(0 << 0)
> +#define MX25_EHCI_INTERFACE_MASK	(0xf)
> +
> +#define MX25_OTG_SIC_SHIFT		29
> +#define MX25_OTG_SIC_MASK		(0x3 << MX25_OTG_SIC_SHIFT)
> +#define MX25_OTG_PM_BIT			BIT(24)
> +#define MX25_OTG_PP_BIT			BIT(11)
> +#define MX25_OTG_OCPOL_BIT		BIT(3)
> +
> +#define MX25_H1_SIC_SHIFT		21
> +#define MX25_H1_SIC_MASK		(0x3 << MX25_H1_SIC_SHIFT)
> +#define MX25_H1_PP_BIT			BIT(18)
> +#define MX25_H1_PM_BIT			BIT(16)
> +#define MX25_H1_IPPUE_UP_BIT		BIT(7)
> +#define MX25_H1_IPPUE_DOWN_BIT		BIT(6)
> +#define MX25_H1_TLL_BIT			BIT(5)
> +#define MX25_H1_USBTE_BIT		BIT(4)
> +#define MX25_H1_OCPOL_BIT		BIT(2)
> +
>  #define MX27_H1_PM_BIT			BIT(8)
>  #define MX27_H2_PM_BIT			BIT(16)
>  #define MX27_OTG_PM_BIT			BIT(24)
> @@ -50,6 +70,39 @@ struct imx_usbmisc {
>  
>  static struct imx_usbmisc *usbmisc;
>  
> +static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
> +{
> +	unsigned long flags;
> +	u32 val = 0;
> +
> +	if (data->index > 1)
> +		return -EINVAL;
> +
> +	spin_lock_irqsave(&usbmisc->lock, flags);
> +	switch (data->index) {
> +	case 0:
> +		val = readl(usbmisc->base);
> +		val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
> +		val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
> +		val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
> +		writel(val, usbmisc->base);
> +		break;
> +	case 1:
> +		val = readl(usbmisc->base);
> +		val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT |  MX25_H1_IPPUE_UP_BIT);
> +		val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
> +		val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
> +			MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
> +
> +		writel(val, usbmisc->base);
> +
> +		break;
> +	}
> +	spin_unlock_irqrestore(&usbmisc->lock, flags);
> +
> +	return 0;
> +}
> +
>  static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
>  {
>  	void __iomem *reg;
> @@ -159,6 +212,7 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
>  }
>  
>  static const struct usbmisc_ops imx25_usbmisc_ops = {
> +	.init = usbmisc_imx25_init,
>  	.post = usbmisc_imx25_post,
>  };
>  
> @@ -200,6 +254,10 @@ static const struct of_device_id usbmisc_imx_dt_ids[] = {
>  		.data = &imx25_usbmisc_ops,
>  	},
>  	{
> +		.compatible = "fsl,imx35-usbmisc",
> +		.data = &imx25_usbmisc_ops,
> +	},
> +	{
>  		.compatible = "fsl,imx27-usbmisc",
>  		.data = &imx27_usbmisc_ops,
>  	},
> -- 
> 1.7.9.5
> 
> 
> 

Applied, thanks.

-- 

Best Regards,
Peter Chen