Commit c03b4ccb authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
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usb: xhci-mtk: support ip-sleep wakeup for MT8183 



Add support ip-sleep wakeup for MT8183, it's similar to MT8173,
and it's also a specific one, but not following IPM rule.
Due to the index 2 already used by many DTS, it's better to keep
it unchanged for backward compatibility, treat specific ones without
following IPM rule as revision 1.x, meanwhile reserve 3~10 for
later revision that follows the IPM rule.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1616482975-17841-6-git-send-email-chunfeng.yun@mediatek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d31b63f1

drivers/usb/host/xhci-mtk.c

+13 −0
Original line number Diff line number Diff line
@@ -57,12 +57,19 @@ 
#define CTRL_U2_FORCE_PLL_STB	BIT(28)



/* usb remote wakeup registers in syscon */



/* mt8173 etc */

#define PERI_WK_CTRL1	0x4

#define WC1_IS_C(x)	(((x) & 0xf) << 26)  /* cycle debounce */

#define WC1_IS_EN	BIT(25)

#define WC1_IS_P	BIT(6)  /* polarity for ip sleep */



/* mt8183 */

#define PERI_WK_CTRL0	0x0

#define WC0_IS_C(x)	((u32)(((x) & 0xf) << 28))  /* cycle debounce */

#define WC0_IS_P	BIT(12)	/* polarity */

#define WC0_IS_EN	BIT(6)



/* mt2712 etc */

#define PERI_SSUSB_SPM_CTRL	0x0

#define SSC_IP_SLEEP_EN	BIT(4)
@@ -71,6 +78,7 @@ 
enum ssusb_uwk_vers {

	SSUSB_UWK_V1 = 1,

	SSUSB_UWK_V2,

	SSUSB_UWK_V1_1 = 101,	/* specific revision 1.01 */

};



static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk)
@@ -300,6 +308,11 @@ static void usb_wakeup_ip_sleep_set(struct xhci_hcd_mtk *mtk, bool enable) 
		msk = WC1_IS_EN | WC1_IS_C(0xf) | WC1_IS_P;

		val = enable ? (WC1_IS_EN | WC1_IS_C(0x8)) : 0;

		break;

	case SSUSB_UWK_V1_1:

		reg = mtk->uwk_reg_base + PERI_WK_CTRL0;

		msk = WC0_IS_EN | WC0_IS_C(0xf) | WC0_IS_P;

		val = enable ? (WC0_IS_EN | WC0_IS_C(0x8)) : 0;

		break;

	case SSUSB_UWK_V2:

		reg = mtk->uwk_reg_base + PERI_SSUSB_SPM_CTRL;

		msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;