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From: Matthias Brugger <matthias.bgg@gmail.com>
To: Chunfeng Yun <chunfeng.yun@mediatek.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rob Herring <robh+dt@kernel.org>,
	Mathias Nyman <mathias.nyman@intel.com>
Cc: linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] usb: xhci-mtk: add support ip-sleep wakeup for mt8195
Date: Wed, 17 Nov 2021 16:39:40 +0100	[thread overview]
Message-ID: <138878d2-e346-931b-69ee-54277fa5647b@gmail.com> (raw)
In-Reply-To: <20211102060049.1843-2-chunfeng.yun@mediatek.com>



On 02/11/2021 07:00, Chunfeng Yun wrote:
> Add support ip-sleep wakeup for mt8195, it's a specific revision for
> each USB controller, and not following IPM rule.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
>   drivers/usb/host/xhci-mtk.c | 37 +++++++++++++++++++++++++++++++++++++
>   1 file changed, 37 insertions(+)
> 
> diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
> index c53f6f276d5c..63f4b6984667 100644
> --- a/drivers/usb/host/xhci-mtk.c
> +++ b/drivers/usb/host/xhci-mtk.c
> @@ -95,6 +95,19 @@
>   #define WC0_SSUSB0_CDEN		BIT(6)
>   #define WC0_IS_SPM_EN		BIT(1)
>   
> +/* mt8195 */
> +#define PERI_WK_CTRL0_8195	0x04
> +#define WC0_IS_P_95		BIT(30)	/* polarity */
> +#define WC0_IS_C_95(x)		((u32)(((x) & 0x7) << 27))
> +#define WC0_IS_EN_P3_95		BIT(26)
> +#define WC0_IS_EN_P2_95		BIT(25)
> +#define WC0_IS_EN_P1_95		BIT(24)
> +
> +#define PERI_WK_CTRL1_8195	0x20
> +#define WC1_IS_C_95(x)		((u32)(((x) & 0xf) << 28))
> +#define WC1_IS_P_95		BIT(12)
> +#define WC1_IS_EN_P0_95		BIT(6)
> +
>   /* mt2712 etc */
>   #define PERI_SSUSB_SPM_CTRL	0x0
>   #define SSC_IP_SLEEP_EN	BIT(4)
> @@ -105,6 +118,10 @@ enum ssusb_uwk_vers {
>   	SSUSB_UWK_V2,
>   	SSUSB_UWK_V1_1 = 101,	/* specific revision 1.01 */
>   	SSUSB_UWK_V1_2,		/* specific revision 1.2 */
> +	SSUSB_UWK_V1_3,		/* mt8195 IP0 */
> +	SSUSB_UWK_V1_4,		/* mt8195 IP1 */
> +	SSUSB_UWK_V1_5,		/* mt8195 IP2 */
> +	SSUSB_UWK_V1_6,		/* mt8195 IP3 */
>   };
>   
>   /*
> @@ -307,6 +324,26 @@ static void usb_wakeup_ip_sleep_set(struct xhci_hcd_mtk *mtk, bool enable)
>   		msk = WC0_SSUSB0_CDEN | WC0_IS_SPM_EN;
>   		val = enable ? msk : 0;
>   		break;
> +	case SSUSB_UWK_V1_3:
> +		reg = mtk->uwk_reg_base + PERI_WK_CTRL1_8195;
> +		msk = WC1_IS_EN_P0_95 | WC1_IS_C_95(0xf) | WC1_IS_P_95;
> +		val = enable ? (WC1_IS_EN_P0_95 | WC1_IS_C_95(0x1)) : 0;
> +		break;
> +	case SSUSB_UWK_V1_4:
> +		reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8195;
> +		msk = WC0_IS_EN_P1_95 | WC0_IS_C_95(0x7) | WC0_IS_P_95;
> +		val = enable ? (WC0_IS_EN_P1_95 | WC0_IS_C_95(0x1)) : 0;
> +		break;
> +	case SSUSB_UWK_V1_5:
> +		reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8195;
> +		msk = WC0_IS_EN_P2_95 | WC0_IS_C_95(0x7) | WC0_IS_P_95;
> +		val = enable ? (WC0_IS_EN_P2_95 | WC0_IS_C_95(0x1)) : 0;
> +		break;
> +	case SSUSB_UWK_V1_6:
> +		reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8195;
> +		msk = WC0_IS_EN_P3_95 | WC0_IS_C_95(0x7) | WC0_IS_P_95;
> +		val = enable ? (WC0_IS_EN_P3_95 | WC0_IS_C_95(0x1)) : 0;
> +		break;
>   	case SSUSB_UWK_V2:
>   		reg = mtk->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
>   		msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;
> 

  reply	other threads:[~2021-11-17 15:39 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-02  6:00 [PATCH 1/3] dt-bindings: usb: mtk-xhci: add support ip-sleep " Chunfeng Yun
2021-11-02  6:00 ` [PATCH 2/3] usb: xhci-mtk: add support ip-sleep wakeup " Chunfeng Yun
2021-11-17 15:39   ` Matthias Brugger [this message]
2021-11-26 10:31   ` AngeloGioacchino Del Regno
2021-11-02  6:00 ` [PATCH 3/3] arm64: dts: mediatek: Add USB xHCI controller " Chunfeng Yun
2021-11-17 15:40   ` Matthias Brugger
2021-11-26 10:36   ` AngeloGioacchino Del Regno
2021-12-10  6:33     ` Chunfeng Yun
2021-11-12 16:57 ` [PATCH 1/3] dt-bindings: usb: mtk-xhci: add support ip-sleep " Rob Herring
2021-11-13  7:27   ` Chunfeng Yun
2021-11-26 10:31 ` AngeloGioacchino Del Regno

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