[PATCH 08/31] phy: rockchip-inno-usb2: Split ID interrupt phy registers

[Alex Bee <knaerzche@gmail.com>]

Commit 51a9b2c03dd3 ("phy: rockchip-inno-usb2: Handle ID IRQ") added ID
detection interrupt registers. However the current implementation assumes
that falling and rising edge interrupt are always enabled in registers
spaning over subsequent bits.
That is not the case for RK312x's version of the phy and this
implementation can't be used as-is, since there are bits with different
purpose in between.

This splits up the register definitions for id_det_en, id_det_en and
id_det_clr registers in rising and falling edge variants.
It's required as preparation to support RK312x's Innosilicon usb2 phy as
well in this driver and matches pretty much to what the vendor does, so I'm
not expecting issues for other SoCs with that change.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
---
 drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 99 +++++++++++++------
 1 file changed, 70 insertions(+), 29 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index a0bc10aa7961..a4a1716e67bd 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -116,9 +116,12 @@ struct rockchip_chg_det_reg {
  * @bvalid_det_en: vbus valid rise detection enable register.
  * @bvalid_det_st: vbus valid rise detection status register.
  * @bvalid_det_clr: vbus valid rise detection clear register.
- * @id_det_en: id detection enable register.
- * @id_det_st: id detection state register.
- * @id_det_clr: id detection clear register.
+ * @idfall_det_en: id detection enable register, falling edge
+ * @idfall_det_st: id detection state register, falling edge
+ * @idfall_det_clr: id detection clear register, falling edge
+ * @idrise_det_en: id detection enable register, rising edge
+ * @idrise_det_st: id detection state register, rising edge
+ * @idrise_det_clr: id detection clear register, rising edge
  * @ls_det_en: linestate detection enable register.
  * @ls_det_st: linestate detection state register.
  * @ls_det_clr: linestate detection clear register.
@@ -133,9 +136,12 @@ struct rockchip_usb2phy_port_cfg {
 	struct usb2phy_reg	bvalid_det_en;
 	struct usb2phy_reg	bvalid_det_st;
 	struct usb2phy_reg	bvalid_det_clr;
-	struct usb2phy_reg	id_det_en;
-	struct usb2phy_reg	id_det_st;
-	struct usb2phy_reg	id_det_clr;
+	struct usb2phy_reg	idfall_det_en;
+	struct usb2phy_reg	idfall_det_st;
+	struct usb2phy_reg	idfall_det_clr;
+	struct usb2phy_reg	idrise_det_en;
+	struct usb2phy_reg	idrise_det_st;
+	struct usb2phy_reg	idrise_det_clr;
 	struct usb2phy_reg	ls_det_en;
 	struct usb2phy_reg	ls_det_st;
 	struct usb2phy_reg	ls_det_clr;
@@ -429,15 +435,27 @@ static int rockchip_usb2phy_init(struct phy *phy)
 			if (ret)
 				goto out;
 
-			/* clear id status and enable id detect irq */
+			/* clear id status and enable id detect irqs */
 			ret = property_enable(rphy->grf,
-					      &rport->port_cfg->id_det_clr,
+					      &rport->port_cfg->idfall_det_clr,
 					      true);
 			if (ret)
 				goto out;
 
 			ret = property_enable(rphy->grf,
-					      &rport->port_cfg->id_det_en,
+					      &rport->port_cfg->idrise_det_clr,
+					      true);
+			if (ret)
+				goto out;
+
+			ret = property_enable(rphy->grf,
+					      &rport->port_cfg->idfall_det_en,
+					      true);
+			if (ret)
+				goto out;
+
+			ret = property_enable(rphy->grf,
+					      &rport->port_cfg->idrise_det_en,
 					      true);
 			if (ret)
 				goto out;
@@ -944,11 +962,16 @@ static irqreturn_t rockchip_usb2phy_id_irq(int irq, void *data)
 	struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
 	bool id;
 
-	if (!property_enabled(rphy->grf, &rport->port_cfg->id_det_st))
+	if (!property_enabled(rphy->grf, &rport->port_cfg->idfall_det_st) &&
+	    !property_enabled(rphy->grf, &rport->port_cfg->idrise_det_st))
 		return IRQ_NONE;
 
 	/* clear id detect irq pending status */
-	property_enable(rphy->grf, &rport->port_cfg->id_det_clr, true);
+	if (property_enabled(rphy->grf, &rport->port_cfg->idfall_det_st))
+		property_enable(rphy->grf, &rport->port_cfg->idfall_det_clr, true);
+
+	if (property_enabled(rphy->grf, &rport->port_cfg->idrise_det_st))
+		property_enable(rphy->grf, &rport->port_cfg->idrise_det_clr, true);
 
 	id = property_enabled(rphy->grf, &rport->port_cfg->utmi_id);
 	extcon_set_state_sync(rphy->edev, EXTCON_USB_HOST, !id);
@@ -1362,9 +1385,12 @@ static const struct rockchip_usb2phy_cfg rk3228_phy_cfgs[] = {
 				.bvalid_det_en	= { 0x0680, 3, 3, 0, 1 },
 				.bvalid_det_st	= { 0x0690, 3, 3, 0, 1 },
 				.bvalid_det_clr	= { 0x06a0, 3, 3, 0, 1 },
-				.id_det_en	= { 0x0680, 6, 5, 0, 3 },
-				.id_det_st	= { 0x0690, 6, 5, 0, 3 },
-				.id_det_clr	= { 0x06a0, 6, 5, 0, 3 },
+				.idfall_det_en	= { 0x0680, 6, 6, 0, 1 },
+				.idfall_det_st	= { 0x0690, 6, 6, 0, 1 },
+				.idfall_det_clr	= { 0x06a0, 6, 6, 0, 1 },
+				.idrise_det_en	= { 0x0680, 5, 5, 0, 1 },
+				.idrise_det_st	= { 0x0690, 5, 5, 0, 1 },
+				.idrise_det_clr	= { 0x06a0, 5, 5, 0, 1 },
 				.ls_det_en	= { 0x0680, 2, 2, 0, 1 },
 				.ls_det_st	= { 0x0690, 2, 2, 0, 1 },
 				.ls_det_clr	= { 0x06a0, 2, 2, 0, 1 },
@@ -1425,9 +1451,12 @@ static const struct rockchip_usb2phy_cfg rk3308_phy_cfgs[] = {
 				.bvalid_det_en	= { 0x3020, 3, 2, 0, 3 },
 				.bvalid_det_st	= { 0x3024, 3, 2, 0, 3 },
 				.bvalid_det_clr = { 0x3028, 3, 2, 0, 3 },
-				.id_det_en	= { 0x3020, 5, 4, 0, 3 },
-				.id_det_st	= { 0x3024, 5, 4, 0, 3 },
-				.id_det_clr	= { 0x3028, 5, 4, 0, 3 },
+				.idfall_det_en	= { 0x3020, 5, 5, 0, 1 },
+				.idfall_det_st	= { 0x3024, 5, 5, 0, 1 },
+				.idfall_det_clr = { 0x3028, 5, 5, 0, 1 },
+				.idrise_det_en	= { 0x3020, 4, 4, 0, 1 },
+				.idrise_det_st	= { 0x3024, 4, 4, 0, 1 },
+				.idrise_det_clr = { 0x3028, 4, 4, 0, 1 },
 				.ls_det_en	= { 0x3020, 0, 0, 0, 1 },
 				.ls_det_st	= { 0x3024, 0, 0, 0, 1 },
 				.ls_det_clr	= { 0x3028, 0, 0, 0, 1 },
@@ -1472,9 +1501,12 @@ static const struct rockchip_usb2phy_cfg rk3328_phy_cfgs[] = {
 				.bvalid_det_en	= { 0x0110, 3, 2, 0, 3 },
 				.bvalid_det_st	= { 0x0114, 3, 2, 0, 3 },
 				.bvalid_det_clr = { 0x0118, 3, 2, 0, 3 },
-				.id_det_en	= { 0x0110, 5, 4, 0, 3 },
-				.id_det_st	= { 0x0114, 5, 4, 0, 3 },
-				.id_det_clr	= { 0x0118, 5, 4, 0, 3 },
+				.idfall_det_en	= { 0x0110, 5, 5, 0, 1 },
+				.idfall_det_st	= { 0x0114, 5, 5, 0, 1 },
+				.idfall_det_clr = { 0x0118, 5, 5, 0, 1 },
+				.idrise_det_en	= { 0x0110, 4, 4, 0, 1 },
+				.idrise_det_st	= { 0x0114, 4, 4, 0, 1 },
+				.idrise_det_clr = { 0x0118, 4, 4, 0, 1 },
 				.ls_det_en	= { 0x0110, 0, 0, 0, 1 },
 				.ls_det_st	= { 0x0114, 0, 0, 0, 1 },
 				.ls_det_clr	= { 0x0118, 0, 0, 0, 1 },
@@ -1538,9 +1570,12 @@ static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = {
 				.bvalid_det_en	= { 0xe3c0, 3, 3, 0, 1 },
 				.bvalid_det_st	= { 0xe3e0, 3, 3, 0, 1 },
 				.bvalid_det_clr	= { 0xe3d0, 3, 3, 0, 1 },
-				.id_det_en	= { 0xe3c0, 5, 4, 0, 3 },
-				.id_det_st	= { 0xe3e0, 5, 4, 0, 3 },
-				.id_det_clr	= { 0xe3d0, 5, 4, 0, 3 },
+				.idfall_det_en	= { 0xe3c0, 5, 5, 0, 1 },
+				.idfall_det_st	= { 0xe3e0, 5, 5, 0, 1 },
+				.idfall_det_clr	= { 0xe3d0, 5, 5, 0, 1 },
+				.idrise_det_en	= { 0xe3c0, 4, 4, 0, 1 },
+				.idrise_det_st	= { 0xe3e0, 4, 4, 0, 1 },
+				.idrise_det_clr	= { 0xe3d0, 4, 4, 0, 1 },
 				.utmi_avalid	= { 0xe2ac, 7, 7, 0, 1 },
 				.utmi_bvalid	= { 0xe2ac, 12, 12, 0, 1 },
 				.utmi_id	= { 0xe2ac, 8, 8, 0, 1 },
@@ -1577,9 +1612,12 @@ static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = {
 				.bvalid_det_en  = { 0xe3c0, 8, 8, 0, 1 },
 				.bvalid_det_st  = { 0xe3e0, 8, 8, 0, 1 },
 				.bvalid_det_clr = { 0xe3d0, 8, 8, 0, 1 },
-				.id_det_en	= { 0xe3c0, 10, 9, 0, 3 },
-				.id_det_st	= { 0xe3e0, 10, 9, 0, 3 },
-				.id_det_clr	= { 0xe3d0, 10, 9, 0, 3 },
+				.idfall_det_en	= { 0xe3c0, 10, 10, 0, 1 },
+				.idfall_det_st	= { 0xe3e0, 10, 10, 0, 1 },
+				.idfall_det_clr	= { 0xe3d0, 10, 10, 0, 1 },
+				.idrise_det_en	= { 0xe3c0, 9, 9, 0, 1 },
+				.idrise_det_st	= { 0xe3e0, 9, 9, 0, 1 },
+				.idrise_det_clr	= { 0xe3d0, 9, 9, 0, 1 },
 				.utmi_avalid	= { 0xe2ac, 10, 10, 0, 1 },
 				.utmi_bvalid    = { 0xe2ac, 16, 16, 0, 1 },
 				.utmi_id	= { 0xe2ac, 11, 11, 0, 1 },
@@ -1608,9 +1646,12 @@ static const struct rockchip_usb2phy_cfg rk3568_phy_cfgs[] = {
 				.bvalid_det_en	= { 0x0080, 3, 2, 0, 3 },
 				.bvalid_det_st	= { 0x0084, 3, 2, 0, 3 },
 				.bvalid_det_clr = { 0x0088, 3, 2, 0, 3 },
-				.id_det_en	= { 0x0080, 5, 4, 0, 3 },
-				.id_det_st	= { 0x0084, 5, 4, 0, 3 },
-				.id_det_clr	= { 0x0088, 5, 4, 0, 3 },
+				.idfall_det_en	= { 0x0080, 5, 5, 0, 1 },
+				.idfall_det_st	= { 0x0084, 5, 5, 0, 1 },
+				.idfall_det_clr	= { 0x0088, 5, 5, 0, 1 },
+				.idrise_det_en	= { 0x0080, 4, 4, 0, 1 },
+				.idrise_det_st	= { 0x0084, 4, 4, 0, 1 },
+				.idrise_det_clr	= { 0x0088, 4, 4, 0, 1 },
 				.utmi_avalid	= { 0x00c0, 10, 10, 0, 1 },
 				.utmi_bvalid	= { 0x00c0, 9, 9, 0, 1 },
 				.utmi_id	= { 0x00c0, 6, 6, 0, 1 },
-- 
2.42.0