From 121fc3ac2f02a2316c6451f1ee9d8ef5932441d2 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 13 Jan 2021 18:52:54 -0800 Subject: usb: gadget: composite: Use SSP sublink speed macros Use SuperSpeed Plus sublink speed macros to fill the BOS descriptor sublink speed attributes in the composite driver. They're self-documented so we can remove some of the comments, and this helps with readability by removing the magic numbers. Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/6f74d446aa164f66fbe4161e28547e28851f6a02.1610592135.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/composite.c | 45 ++++++++++++++++++++++-------------------- 1 file changed, 24 insertions(+), 21 deletions(-) (limited to 'drivers/usb/gadget/composite.c') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 9a7cc08d6593..bc17302a9e85 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include @@ -749,32 +750,34 @@ static int bos_desc(struct usb_composite_dev *cdev) ssp_cap->bReserved = 0; ssp_cap->wReserved = 0; - /* SSAC = 1 (2 attributes) */ - ssp_cap->bmAttributes = cpu_to_le32(1); + ssp_cap->bmAttributes = + cpu_to_le32(FIELD_PREP(USB_SSP_SUBLINK_SPEED_ATTRIBS, 1) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_IDS, 0)); - /* Min RX/TX Lane Count = 1 */ ssp_cap->wFunctionalitySupport = - cpu_to_le16((1 << 8) | (1 << 12)); + cpu_to_le16(FIELD_PREP(USB_SSP_MIN_SUBLINK_SPEED_ATTRIBUTE_ID, 0) | + FIELD_PREP(USB_SSP_MIN_RX_LANE_COUNT, 1) | + FIELD_PREP(USB_SSP_MIN_TX_LANE_COUNT, 1)); - /* - * bmSublinkSpeedAttr[0]: - * ST = Symmetric, RX - * LSE = 3 (Gbps) - * LP = 1 (SuperSpeedPlus) - * LSM = 10 (10 Gbps) - */ ssp_cap->bmSublinkSpeedAttr[0] = - cpu_to_le32((3 << 4) | (1 << 14) | (0xa << 16)); - /* - * bmSublinkSpeedAttr[1] = - * ST = Symmetric, TX - * LSE = 3 (Gbps) - * LP = 1 (SuperSpeedPlus) - * LSM = 10 (10 Gbps) - */ + cpu_to_le32(FIELD_PREP(USB_SSP_SUBLINK_SPEED_SSID, 0) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_LSE, + USB_SSP_SUBLINK_SPEED_LSE_GBPS) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_ST, + USB_SSP_SUBLINK_SPEED_ST_SYM_RX) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_LP, + USB_SSP_SUBLINK_SPEED_LP_SSP) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_LSM, 10)); + ssp_cap->bmSublinkSpeedAttr[1] = - cpu_to_le32((3 << 4) | (1 << 14) | - (0xa << 16) | (1 << 7)); + cpu_to_le32(FIELD_PREP(USB_SSP_SUBLINK_SPEED_SSID, 0) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_LSE, + USB_SSP_SUBLINK_SPEED_LSE_GBPS) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_ST, + USB_SSP_SUBLINK_SPEED_ST_SYM_TX) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_LP, + USB_SSP_SUBLINK_SPEED_LP_SSP) | + FIELD_PREP(USB_SSP_SUBLINK_SPEED_LSM, 10)); } return le16_to_cpu(bos->wTotalLength); -- cgit