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17a0184ca1
Commite0d795e4f3("usb: irda: cleanup on ir-usb module") added a USB IrDA header with common defines, but mistakingly switched to using the class-descriptor baud-rate bitmask values for the outbound header. This broke link-speed handling for rates above 9600 baud, but a device would also be able to operate at the default 9600 baud until a link-speed request was issued (e.g. using the TCGETS ioctl). Fixes:e0d795e4f3("usb: irda: cleanup on ir-usb module") Cc: stable <stable@vger.kernel.org> # 2.6.27 Cc: Felipe Balbi <balbi@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
164 lines
3.8 KiB
C
164 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* USB IrDA Bridge Device Definition
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*/
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#ifndef __LINUX_USB_IRDA_H
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#define __LINUX_USB_IRDA_H
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/* This device should use Application-specific class */
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#define USB_SUBCLASS_IRDA 0x02
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/*-------------------------------------------------------------------------*/
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/* Class-Specific requests (bRequest field) */
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#define USB_REQ_CS_IRDA_RECEIVING 1
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#define USB_REQ_CS_IRDA_CHECK_MEDIA_BUSY 3
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#define USB_REQ_CS_IRDA_RATE_SNIFF 4
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#define USB_REQ_CS_IRDA_UNICAST_LIST 5
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#define USB_REQ_CS_IRDA_GET_CLASS_DESC 6
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/*-------------------------------------------------------------------------*/
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/* Class-Specific descriptor */
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#define USB_DT_CS_IRDA 0x21
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/*-------------------------------------------------------------------------*/
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/* Data sizes */
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#define USB_IRDA_DS_2048 (1 << 5)
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#define USB_IRDA_DS_1024 (1 << 4)
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#define USB_IRDA_DS_512 (1 << 3)
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#define USB_IRDA_DS_256 (1 << 2)
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#define USB_IRDA_DS_128 (1 << 1)
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#define USB_IRDA_DS_64 (1 << 0)
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/* Window sizes */
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#define USB_IRDA_WS_7 (1 << 6)
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#define USB_IRDA_WS_6 (1 << 5)
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#define USB_IRDA_WS_5 (1 << 4)
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#define USB_IRDA_WS_4 (1 << 3)
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#define USB_IRDA_WS_3 (1 << 2)
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#define USB_IRDA_WS_2 (1 << 1)
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#define USB_IRDA_WS_1 (1 << 0)
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/* Min turnaround times in usecs */
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#define USB_IRDA_MTT_0 (1 << 7)
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#define USB_IRDA_MTT_10 (1 << 6)
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#define USB_IRDA_MTT_50 (1 << 5)
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#define USB_IRDA_MTT_100 (1 << 4)
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#define USB_IRDA_MTT_500 (1 << 3)
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#define USB_IRDA_MTT_1000 (1 << 2)
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#define USB_IRDA_MTT_5000 (1 << 1)
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#define USB_IRDA_MTT_10000 (1 << 0)
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/* Baud rates */
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#define USB_IRDA_BR_4000000 (1 << 8)
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#define USB_IRDA_BR_1152000 (1 << 7)
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#define USB_IRDA_BR_576000 (1 << 6)
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#define USB_IRDA_BR_115200 (1 << 5)
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#define USB_IRDA_BR_57600 (1 << 4)
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#define USB_IRDA_BR_38400 (1 << 3)
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#define USB_IRDA_BR_19200 (1 << 2)
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#define USB_IRDA_BR_9600 (1 << 1)
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#define USB_IRDA_BR_2400 (1 << 0)
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/* Additional BOFs */
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#define USB_IRDA_AB_0 (1 << 7)
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#define USB_IRDA_AB_1 (1 << 6)
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#define USB_IRDA_AB_2 (1 << 5)
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#define USB_IRDA_AB_3 (1 << 4)
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#define USB_IRDA_AB_6 (1 << 3)
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#define USB_IRDA_AB_12 (1 << 2)
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#define USB_IRDA_AB_24 (1 << 1)
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#define USB_IRDA_AB_48 (1 << 0)
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/* IRDA Rate Sniff */
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#define USB_IRDA_RATE_SNIFF 1
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/*-------------------------------------------------------------------------*/
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struct usb_irda_cs_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__le16 bcdSpecRevision;
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__u8 bmDataSize;
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__u8 bmWindowSize;
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__u8 bmMinTurnaroundTime;
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__le16 wBaudRate;
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__u8 bmAdditionalBOFs;
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__u8 bIrdaRateSniff;
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__u8 bMaxUnicastList;
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} __attribute__ ((packed));
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/*-------------------------------------------------------------------------*/
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/* Data Format */
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#define USB_IRDA_STATUS_MEDIA_BUSY (1 << 7)
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/* The following is a 4-bit value used for both
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* inbound and outbound headers:
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*
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* 0 - speed ignored
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* 1 - 2400 bps
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* 2 - 9600 bps
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* 3 - 19200 bps
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* 4 - 38400 bps
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* 5 - 57600 bps
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* 6 - 115200 bps
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* 7 - 576000 bps
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* 8 - 1.152 Mbps
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* 9 - 4 Mbps
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* 10..15 - Reserved
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*/
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#define USB_IRDA_STATUS_LINK_SPEED 0x0f
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#define USB_IRDA_LS_NO_CHANGE 0
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#define USB_IRDA_LS_2400 1
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#define USB_IRDA_LS_9600 2
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#define USB_IRDA_LS_19200 3
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#define USB_IRDA_LS_38400 4
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#define USB_IRDA_LS_57600 5
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#define USB_IRDA_LS_115200 6
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#define USB_IRDA_LS_576000 7
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#define USB_IRDA_LS_1152000 8
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#define USB_IRDA_LS_4000000 9
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/* The following is a 4-bit value used only for
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* outbound header:
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*
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* 0 - No change (BOF ignored)
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* 1 - 48 BOFs
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* 2 - 24 BOFs
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* 3 - 12 BOFs
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* 4 - 6 BOFs
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* 5 - 3 BOFs
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* 6 - 2 BOFs
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* 7 - 1 BOFs
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* 8 - 0 BOFs
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* 9..15 - Reserved
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*/
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#define USB_IRDA_EXTRA_BOFS 0xf0
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struct usb_irda_inbound_header {
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__u8 bmStatus;
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};
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struct usb_irda_outbound_header {
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__u8 bmChange;
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};
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#endif /* __LINUX_USB_IRDA_H */
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