These patches implement a modification of the USBTMC protocol to allow operation with Rigol equipment. Rigol requires that a single TMC request to receive any buffer size and bulk requests to get the data. The original algorithm sends a TMC request for each subset of the data (a single USB transaction). The modification is only active for Rigol equipment, vendor and product set is contained in the array usbtmc_id_quirk.
This patch creates the rigol_quirk variable and the arrays for the idvendor and idproduct. Signed-off-by: Alexandre Peixoto Ferreira <[email protected]> --- drivers/usb/class/usbtmc.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 4c5506a..c450b04 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -31,6 +31,8 @@ #include <linux/usb/tmc.h> +#define RIGOL 1 +#define USBTMC_HEADER_SIZE 12 #define USBTMC_MINOR_BASE 176 /* @@ -84,6 +86,8 @@ struct usbtmc_device_data { u8 bTag_last_write; /* needed for abort */ u8 bTag_last_read; /* needed for abort */ + u8 rigol_quirk; + /* attributes from the USB TMC spec for this device */ u8 TermChar; bool TermCharEnabled; @@ -97,6 +101,16 @@ struct usbtmc_device_data { }; #define to_usbtmc_data(d) container_of(d, struct usbtmc_device_data, kref) +struct usbtmc_ID_rigol_quirk { + __u16 idVendor; + __u16 idProduct; +}; + +static const struct usbtmc_ID_rigol_quirk usbtmc_id_quirk[] = { + { 0x1ab1, 0x0588 }, + { 0, 0 } +}; + /* Forward declarations */ static struct usb_driver usbtmc_driver; -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
