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authorSrikant Patnaik2015-01-13 15:08:24 +0530
committerSrikant Patnaik2015-01-13 15:08:24 +0530
commit97327692361306d1e6259021bc425e32832fdb50 (patch)
treefe9088f3248ec61e24f404f21b9793cb644b7f01 /drivers/usb/class/cdc-acm.h
parent2d05a8f663478a44e088d122e0d62109bbc801d0 (diff)
parenta3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff)
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dirty fix to merging
Diffstat (limited to 'drivers/usb/class/cdc-acm.h')
-rw-r--r--drivers/usb/class/cdc-acm.h130
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
new file mode 100644
index 00000000..35ef887b
--- /dev/null
+++ b/drivers/usb/class/cdc-acm.h
@@ -0,0 +1,130 @@
+/*
+ *
+ * Includes for cdc-acm.c
+ *
+ * Mainly take from usbnet's cdc-ether part
+ *
+ */
+
+/*
+ * CMSPAR, some architectures can't have space and mark parity.
+ */
+
+#ifndef CMSPAR
+#define CMSPAR 0
+#endif
+
+/*
+ * Major and minor numbers.
+ */
+
+#define ACM_TTY_MAJOR 166
+#define ACM_TTY_MINORS 32
+
+/*
+ * Requests.
+ */
+
+#define USB_RT_ACM (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
+
+/*
+ * Output control lines.
+ */
+
+#define ACM_CTRL_DTR 0x01
+#define ACM_CTRL_RTS 0x02
+
+/*
+ * Input control lines and line errors.
+ */
+
+#define ACM_CTRL_DCD 0x01
+#define ACM_CTRL_DSR 0x02
+#define ACM_CTRL_BRK 0x04
+#define ACM_CTRL_RI 0x08
+
+#define ACM_CTRL_FRAMING 0x10
+#define ACM_CTRL_PARITY 0x20
+#define ACM_CTRL_OVERRUN 0x40
+
+/*
+ * Internal driver structures.
+ */
+
+/*
+ * The only reason to have several buffers is to accommodate assumptions
+ * in line disciplines. They ask for empty space amount, receive our URB size,
+ * and proceed to issue several 1-character writes, assuming they will fit.
+ * The very first write takes a complete URB. Fortunately, this only happens
+ * when processing onlcr, so we only need 2 buffers. These values must be
+ * powers of 2.
+ */
+#define ACM_NW 16
+#define ACM_NR 16
+
+struct acm_wb {
+ unsigned char *buf;
+ dma_addr_t dmah;
+ int len;
+ int use;
+ struct urb *urb;
+ struct acm *instance;
+};
+
+struct acm_rb {
+ int size;
+ unsigned char *base;
+ dma_addr_t dma;
+ int index;
+ struct acm *instance;
+};
+
+struct acm {
+ struct usb_device *dev; /* the corresponding usb device */
+ struct usb_interface *control; /* control interface */
+ struct usb_interface *data; /* data interface */
+ struct tty_port port; /* our tty port data */
+ struct urb *ctrlurb; /* urbs */
+ u8 *ctrl_buffer; /* buffers of urbs */
+ dma_addr_t ctrl_dma; /* dma handles of buffers */
+ u8 *country_codes; /* country codes from device */
+ unsigned int country_code_size; /* size of this buffer */
+ unsigned int country_rel_date; /* release date of version */
+ struct acm_wb wb[ACM_NW];
+ unsigned long read_urbs_free;
+ struct urb *read_urbs[ACM_NR];
+ struct acm_rb read_buffers[ACM_NR];
+ int rx_buflimit;
+ int rx_endpoint;
+ spinlock_t read_lock;
+ int write_used; /* number of non-empty write buffers */
+ int transmitting;
+ spinlock_t write_lock;
+ struct mutex mutex;
+ bool disconnected;
+ struct usb_cdc_line_coding line; /* bits, stop, parity */
+ struct work_struct work; /* work queue entry for line discipline waking up */
+ unsigned int ctrlin; /* input control lines (DCD, DSR, RI, break, overruns) */
+ unsigned int ctrlout; /* output control lines (DTR, RTS) */
+ unsigned int writesize; /* max packet size for the output bulk endpoint */
+ unsigned int readsize,ctrlsize; /* buffer sizes for freeing */
+ unsigned int minor; /* acm minor number */
+ unsigned char clocal; /* termios CLOCAL */
+ unsigned int ctrl_caps; /* control capabilities from the class specific header */
+ unsigned int susp_count; /* number of suspended interfaces */
+ unsigned int combined_interfaces:1; /* control and data collapsed */
+ unsigned int is_int_ep:1; /* interrupt endpoints contrary to spec used */
+ unsigned int throttled:1; /* actually throttled */
+ unsigned int throttle_req:1; /* throttle requested */
+ u8 bInterval;
+ struct acm_wb *delayed_wb; /* write queued for a device about to be woken */
+};
+
+#define CDC_DATA_INTERFACE_TYPE 0x0a
+
+/* constants describing various quirks and errors */
+#define NO_UNION_NORMAL 1
+#define SINGLE_RX_URB 2
+#define NO_CAP_LINE 4
+#define NOT_A_MODEM 8
+#define NO_DATA_INTERFACE 16