diff mbox series

[v2,2/2] usb: mtu3: Add MT8195 MTU3 ip-sleep wakeup support

Message ID 20240122111809.148546-2-angelogioacchino.delregno@collabora.com (mailing list archive)
State New, archived
Headers show
Series [v2,1/2] dt-bindings: usb: mtu3: Add MT8195 MTU3 ip-sleep support | expand

Commit Message

AngeloGioacchino Del Regno Jan. 22, 2024, 11:18 a.m. UTC 
Add support for the ip-sleep wakeup functionality on the three MTU3
controllers found on the MT8195 SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---

Changes in v2:
 - Dropped unused definition for WC0_IS_EN_P1_95

 drivers/usb/mtu3/mtu3_host.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

Comments

Matthias Brugger Jan. 22, 2024, 1:05 p.m. UTC | #1 
On 22/01/2024 12:18, AngeloGioacchino Del Regno wrote:
> Add support for the ip-sleep wakeup functionality on the three MTU3
> controllers found on the MT8195 SoC.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

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

> ---
> 
> Changes in v2:
>   - Dropped unused definition for WC0_IS_EN_P1_95
> 
>   drivers/usb/mtu3/mtu3_host.c | 30 ++++++++++++++++++++++++++++++
>   1 file changed, 30 insertions(+)
> 
> diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c
> index 9f2be22af844..7c657ea2dabd 100644
> --- a/drivers/usb/mtu3/mtu3_host.c
> +++ b/drivers/usb/mtu3/mtu3_host.c
> @@ -34,6 +34,18 @@
>   #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 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)
> @@ -44,6 +56,9 @@ enum ssusb_uwk_vers {
>   	SSUSB_UWK_V2,
>   	SSUSB_UWK_V1_1 = 101,	/* specific revision 1.01 */
>   	SSUSB_UWK_V1_2,		/* specific revision 1.02 */
> +	SSUSB_UWK_V1_3,		/* mt8195 IP0 */
> +	SSUSB_UWK_V1_5 = 105,	/* mt8195 IP2 */
> +	SSUSB_UWK_V1_6,		/* mt8195 IP3 */
>   };
>   
>   /*
> @@ -70,6 +85,21 @@ static void ssusb_wakeup_ip_sleep_set(struct ssusb_mtk *ssusb, bool enable)
>   		msk = WC0_SSUSB0_CDEN | WC0_IS_SPM_EN;
>   		val = enable ? msk : 0;
>   		break;
> +	case SSUSB_UWK_V1_3:
> +		reg = ssusb->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_5:
> +		reg = ssusb->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 = ssusb->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 = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
>   		msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;
Chunfeng Yun (云春峰) Feb. 4, 2024, 6:03 a.m. UTC | #2 
On Mon, 2024-01-22 at 12:18 +0100, AngeloGioacchino Del Regno wrote:
> Add support for the ip-sleep wakeup functionality on the three MTU3
> controllers found on the MT8195 SoC.
> 
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>
> ---
> 
> Changes in v2:
>  - Dropped unused definition for WC0_IS_EN_P1_95
> 
>  drivers/usb/mtu3/mtu3_host.c | 30 ++++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
> 
> diff --git a/drivers/usb/mtu3/mtu3_host.c
> b/drivers/usb/mtu3/mtu3_host.c
> index 9f2be22af844..7c657ea2dabd 100644
> --- a/drivers/usb/mtu3/mtu3_host.c
> +++ b/drivers/usb/mtu3/mtu3_host.c
> @@ -34,6 +34,18 @@
>  #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 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)
> @@ -44,6 +56,9 @@ enum ssusb_uwk_vers {
>  	SSUSB_UWK_V2,
>  	SSUSB_UWK_V1_1 = 101,	/* specific revision 1.01 */
>  	SSUSB_UWK_V1_2,		/* specific revision 1.02 */
> +	SSUSB_UWK_V1_3,		/* mt8195 IP0 */
> +	SSUSB_UWK_V1_5 = 105,	/* mt8195 IP2 */
> +	SSUSB_UWK_V1_6,		/* mt8195 IP3 */
>  };
>  
>  /*
> @@ -70,6 +85,21 @@ static void ssusb_wakeup_ip_sleep_set(struct
> ssusb_mtk *ssusb, bool enable)
>  		msk = WC0_SSUSB0_CDEN | WC0_IS_SPM_EN;
>  		val = enable ? msk : 0;
>  		break;
> +	case SSUSB_UWK_V1_3:
> +		reg = ssusb->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_5:
> +		reg = ssusb->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 = ssusb->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 = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
>  		msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;

which project will use ip-sleep wakeup for mt8195? only use device
mode?

As I know, when use upstream code to support dual-role mode on mt8195,
there is a bug caused by hw limitation;
AngeloGioacchino Del Regno Feb. 12, 2024, 10:15 a.m. UTC | #3 
Il 04/02/24 07:03, Chunfeng Yun (云春峰) ha scritto:
> On Mon, 2024-01-22 at 12:18 +0100, AngeloGioacchino Del Regno wrote:
>> Add support for the ip-sleep wakeup functionality on the three MTU3
>> controllers found on the MT8195 SoC.
>>
>> Signed-off-by: AngeloGioacchino Del Regno <
>> angelogioacchino.delregno@collabora.com>
>> ---
>>
>> Changes in v2:
>>   - Dropped unused definition for WC0_IS_EN_P1_95
>>
>>   drivers/usb/mtu3/mtu3_host.c | 30 ++++++++++++++++++++++++++++++
>>   1 file changed, 30 insertions(+)
>>
>> diff --git a/drivers/usb/mtu3/mtu3_host.c
>> b/drivers/usb/mtu3/mtu3_host.c
>> index 9f2be22af844..7c657ea2dabd 100644
>> --- a/drivers/usb/mtu3/mtu3_host.c
>> +++ b/drivers/usb/mtu3/mtu3_host.c
>> @@ -34,6 +34,18 @@
>>   #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 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)
>> @@ -44,6 +56,9 @@ enum ssusb_uwk_vers {
>>   	SSUSB_UWK_V2,
>>   	SSUSB_UWK_V1_1 = 101,	/* specific revision 1.01 */
>>   	SSUSB_UWK_V1_2,		/* specific revision 1.02 */
>> +	SSUSB_UWK_V1_3,		/* mt8195 IP0 */
>> +	SSUSB_UWK_V1_5 = 105,	/* mt8195 IP2 */
>> +	SSUSB_UWK_V1_6,		/* mt8195 IP3 */
>>   };
>>   
>>   /*
>> @@ -70,6 +85,21 @@ static void ssusb_wakeup_ip_sleep_set(struct
>> ssusb_mtk *ssusb, bool enable)
>>   		msk = WC0_SSUSB0_CDEN | WC0_IS_SPM_EN;
>>   		val = enable ? msk : 0;
>>   		break;
>> +	case SSUSB_UWK_V1_3:
>> +		reg = ssusb->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_5:
>> +		reg = ssusb->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 = ssusb->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 = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
>>   		msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;
> 
> which project will use ip-sleep wakeup for mt8195? only use device
> mode?
> 
> As I know, when use upstream code to support dual-role mode on mt8195,
> there is a bug caused by hw limitation;
> 
> 

This is required because:
  1. The device tree nodes for MT8195 were wrong (now they're correct), as in,
     there are three MTU3 controllers that must be described, as the device tree
     provides a description of the hardware, not a partial description of whatever
     one machine wants to use; and
  2. When the description of the hardware in DT is correct, even if Chromebooks are
     declaring dr_mode = "host", the IP sleep must come from MTU3 - otherwise there
     will be issues when trying to enter system sleep (as the system will be woken
     up immediately after trying to go to suspend); and
  3. Upstream does support the Genio 1200 EVK, and I'm also introducing a new board
     that is similar to that (Radxa NIO12L).

Besides, which bug are you talking about?

At least on Chromebooks, everything seems to be working just fine; maybe that's
because, on Cherry, dr_mode is forced to host.

Regards,
Angelo
diff mbox series

Patch

diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c
index 9f2be22af844..7c657ea2dabd 100644
--- a/drivers/usb/mtu3/mtu3_host.c
+++ b/drivers/usb/mtu3/mtu3_host.c
@@ -34,6 +34,18 @@ 
 #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 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)
@@ -44,6 +56,9 @@  enum ssusb_uwk_vers {
 	SSUSB_UWK_V2,
 	SSUSB_UWK_V1_1 = 101,	/* specific revision 1.01 */
 	SSUSB_UWK_V1_2,		/* specific revision 1.02 */
+	SSUSB_UWK_V1_3,		/* mt8195 IP0 */
+	SSUSB_UWK_V1_5 = 105,	/* mt8195 IP2 */
+	SSUSB_UWK_V1_6,		/* mt8195 IP3 */
 };
 
 /*
@@ -70,6 +85,21 @@  static void ssusb_wakeup_ip_sleep_set(struct ssusb_mtk *ssusb, bool enable)
 		msk = WC0_SSUSB0_CDEN | WC0_IS_SPM_EN;
 		val = enable ? msk : 0;
 		break;
+	case SSUSB_UWK_V1_3:
+		reg = ssusb->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_5:
+		reg = ssusb->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 = ssusb->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 = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
 		msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;