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usb: gadget: aspeed: allow to set device IDs in device tree

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The patch overrides idVendor, idProduct and bcdDevice fields in vhub
Device Descriptor if according device tree properties are defined.

Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Tao Ren 2020-03-15 12:16:30 -07:00 committed by Felipe Balbi
parent 30d2617fd7
commit 2e596d8843
1 changed files with 21 additions and 0 deletions
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21
drivers/usb/gadget/udc/aspeed-vhub/hub.c
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@ -887,6 +887,26 @@ void ast_vhub_hub_reset(struct ast_vhub *vhub)
writel(0, vhub->regs + AST_VHUB_EP1_STS_CHG);
}
static void ast_vhub_of_parse_dev_desc(struct ast_vhub *vhub,
const struct device_node *vhub_np)
{
u16 id;
u32 data;
if (!of_property_read_u32(vhub_np, "vhub-vendor-id", &data)) {
id = (u16)data;
vhub->vhub_dev_desc.idVendor = cpu_to_le16(id);
}
if (!of_property_read_u32(vhub_np, "vhub-product-id", &data)) {
id = (u16)data;
vhub->vhub_dev_desc.idProduct = cpu_to_le16(id);
}
if (!of_property_read_u32(vhub_np, "vhub-device-revision", &data)) {
id = (u16)data;
vhub->vhub_dev_desc.bcdDevice = cpu_to_le16(id);
}
}
static struct usb_gadget_string_container*
ast_vhub_str_container_alloc(struct ast_vhub *vhub)
{
@ -1000,6 +1020,7 @@ static int ast_vhub_init_desc(struct ast_vhub *vhub)
/* Initialize vhub Device Descriptor. */
memcpy(&vhub->vhub_dev_desc, &ast_vhub_dev_desc,
sizeof(vhub->vhub_dev_desc));
ast_vhub_of_parse_dev_desc(vhub, vhub_np);
/* Initialize vhub Configuration Descriptor. */
memcpy(&vhub->vhub_conf_desc, &ast_vhub_conf_desc,