[PATCH linux dev-5.4 v3 2/3] usb: gadget: aspeed: add ast2600 vhub support

[rentao.bupt at gmail.com]

From: Tao Ren <rentao.bupt at gmail.com>

Add AST2600 support in aspeed-vhub driver. There are 3 major differences
between AST2500 and AST2600 vhub:
  - AST2600 supports 7 downstream ports while AST2500 supports 5.
  - AST2600 supports 21 generic endpoints while AST2500 supports 15.
  - EP0 data buffer's 8-byte DMA alignment restriction is removed from
    AST2600.

Signed-off-by: Tao Ren <rentao.bupt at gmail.com>
Reviewed-by: Andrew Jeffery <andrew at aj.id.au>
---
 Changes in v3:
  - nothing.
 Changes in v2:
  - all the ports/endpoints handling logic are moved to patch #1.

 drivers/usb/gadget/udc/aspeed-vhub/Kconfig | 4 ++--
 drivers/usb/gadget/udc/aspeed-vhub/core.c  | 9 +++++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/udc/aspeed-vhub/Kconfig b/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
index 83ba8a2eb6af..605500b19cf3 100644
--- a/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
+++ b/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
@@ -4,5 +4,5 @@ config USB_ASPEED_VHUB
 	depends on ARCH_ASPEED || COMPILE_TEST
 	depends on USB_LIBCOMPOSITE
 	help
-	  USB peripheral controller for the Aspeed AST2500 family
-	  SoCs supporting the "vHub" functionality and USB2.0
+	  USB peripheral controller for the Aspeed AST2400, AST2500 and
+	  AST2600 family SoCs supporting the "vHub" functionality and USB2.0
diff --git a/drivers/usb/gadget/udc/aspeed-vhub/core.c b/drivers/usb/gadget/udc/aspeed-vhub/core.c
index 94081cc04113..c827bf420278 100644
--- a/drivers/usb/gadget/udc/aspeed-vhub/core.c
+++ b/drivers/usb/gadget/udc/aspeed-vhub/core.c
@@ -42,6 +42,11 @@ static const struct ast_vhub_config ast2400_config = {
 	.max_epns = 15,
 };
 
+static const struct ast_vhub_config ast2600_config = {
+	.max_ports = 7,
+	.max_epns = 21,
+};
+
 static const struct of_device_id ast_vhub_dt_ids[] = {
 	{
 		.compatible = "aspeed,ast2400-usb-vhub",
@@ -51,6 +56,10 @@ static const struct of_device_id ast_vhub_dt_ids[] = {
 		.compatible = "aspeed,ast2500-usb-vhub",
 		.data = &ast2400_config,
 	},
+	{
+		.compatible = "aspeed,ast2600-usb-vhub",
+		.data = &ast2600_config,
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids);
-- 
2.17.1