@@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/utsname.h>
+#include <linux/bitfield.h>
#include <linux/usb/composite.h>
#include <linux/usb/otg.h>
@@ -743,32 +744,30 @@ 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_LSE_GBPS) |
+ FIELD_PREP(USB_SSP_SUBLINK_SPEED_ST,
+ USB_ST_SYMMETRIC_RX) |
+ FIELD_PREP(USB_SSP_SUBLINK_SPEED_LP, USB_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_LSE_GBPS) |
+ FIELD_PREP(USB_SSP_SUBLINK_SPEED_ST,
+ USB_ST_SYMMETRIC_TX) |
+ FIELD_PREP(USB_SSP_SUBLINK_SPEED_LP, USB_LP_SSP) |
+ FIELD_PREP(USB_SSP_SUBLINK_SPEED_LSM, 10));
}
return le16_to_cpu(bos->wTotalLength);
Magic numbers are difficult to read. Use macros for super-speed-plus BOS descriptor attributes in the composite driver. They're self-documented. So there's no need to provide comments as we did previously for the magic numbers. Signed-off-by: Thinh Nguyen <thinhn@synopsys.com> --- Changes in v4: - None Changes in v3: - None Changes in v2: - None drivers/usb/gadget/composite.c | 41 ++++++++++++++++++++--------------------- 1 file changed, 20 insertions(+), 21 deletions(-)