diff options
| author | Alexandre Peixoto Ferreira <alexandref75@gmail.com> | 2013-04-30 09:51:50 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-17 04:50:50 +0400 |
| commit | 8402db5dda3ac167014c143a633efff340aaff5b (patch) | |
| tree | c319ee51bb6716d3aded0de8b6f611077cf5d1d0 /drivers/usb/class/usbtmc.c | |
| parent | 6523f6d2475df99e441bd742d2a8993f64124ce9 (diff) | |
| download | linux-8402db5dda3ac167014c143a633efff340aaff5b.tar.xz | |
USB: usbtmc: Add flag rigol_quirk to usbtmc_device_data
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 <alexandref75@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/class/usbtmc.c')
| -rw-r--r-- | drivers/usb/class/usbtmc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 4c5506ae5e45..c450b047e365 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; |