This is a new driver for the Windows Media Center Edition/eHome
Infrared Remote transceiver devices. Its a port of the current
lirc_mceusb driver to ir-core, and currently lacks transmit support,
but will grow it back soon enough... This driver also differs from
lirc_mceusb in that it borrows heavily from a simplified IR buffer
decode routine found in Jon Smirl's earlier ir-mceusb port.
This driver has been tested on the original first-generation MCE IR
device with the MS vendor ID, as well as a current-generation device
with a Topseed vendor ID. Every receiver supported by lirc_mceusb
should work equally well. Testing was done primarily with RC6 MCE
remotes, but also briefly with a Hauppauge RC5 remote, and all works
as expected.
Signed-off-by: Jarod Wilson <jarod@xxxxxxxxxx>
---
drivers/media/IR/Kconfig | 12 +
drivers/media/IR/Makefile | 1 +
drivers/media/IR/mceusb.c | 1081 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 1094 insertions(+), 0 deletions(-)
diff --git a/drivers/media/IR/Kconfig b/drivers/media/IR/Kconfig
index 195c6cf..7ffa86f 100644
--- a/drivers/media/IR/Kconfig
+++ b/drivers/media/IR/Kconfig
@@ -66,3 +66,15 @@ config IR_IMON
To compile this driver as a module, choose M here: the
module will be called imon.
+
+config IR_MCEUSB
+ tristate "Windows Media Center Ed. eHome Infrared Transceiver"
+ depends on USB_ARCH_HAS_HCD
+ depends on IR_CORE
+ select USB
+ ---help---
+ Say Y here if you want to use a Windows Media Center Edition
+ eHome Infrared Transceiver.
+
+ To compile this driver as a module, choose M here: the
+ module will be called mceusb.
diff --git a/drivers/media/IR/Makefile b/drivers/media/IR/Makefile
index b998fcc..b43fe36 100644
--- a/drivers/media/IR/Makefile
+++ b/drivers/media/IR/Makefile
@@ -13,3 +13,4 @@ obj-$(CONFIG_IR_SONY_DECODER) += ir-sony-decoder.o
# stand-alone IR receivers/transmitters
obj-$(CONFIG_IR_IMON) += imon.o
+obj-$(CONFIG_IR_MCEUSB) += mceusb.o
diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c
new file mode 100644
index 0000000..5729e5f
--- /dev/null
+++ b/drivers/media/IR/mceusb.c
@@ -0,0 +1,1081 @@
+/*
+ * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers
+ *
+ * Copyright (c) 2010 by Jarod Wilson <jarod@xxxxxxxxxx>
+ *
+ * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan
+ * Conti, Martin Blatter and Daniel Melander, the latter of which was
+ * in turn also based on the lirc_atiusb driver by Paul Miller. The
+ * two mce drivers were merged into one by Jarod Wilson, with transmit
+ * support for the 1st-gen device added primarily by Patrick Calhoun,
+ * with a bit of tweaks by Jarod. Debugging improvements and proper
+ * support for what appears to be 3rd-gen hardware added by Jarod.
+ * Initial port from lirc driver to ir-core drivery by Jarod, based
+ * partially on a port to an earlier proposed IR infrastructure by
+ * Jon Smirl, which included enhancements and simplifications to the
+ * incoming IR buffer parsing routines.
+ *
+ * TODO:
+ * - add rc-core transmit support, once available
+ * - enable support for forthcoming ir-lirc-codec interface
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/input.h>
+#include <media/ir-core.h>
+#include <media/ir-common.h>
+
+#define DRIVER_VERSION "1.91"
+#define DRIVER_AUTHOR "Jarod Wilson <jarod@xxxxxxxxxxxx>"
+#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \
+ "device driver"
+#define DRIVER_NAME "mceusb"
+
+#define USB_BUFLEN 32 /* USB reception buffer length */
+#define IRBUF_SIZE 256 /* IR work buffer length */
+
+/* MCE constants */
+#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
+#define MCE_TIME_UNIT 50 /* Approx 50us resolution */
+#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
+#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
+#define MCE_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
+#define MCE_CONTROL_HEADER 0x9F /* MCE status header */
+#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
+#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
+#define MCE_DEFAULT_TX_MASK 0x03 /* Val opts: TX1=0x01, TX2=0x02, ALL=0x03 */
+#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
+#define MCE_PULSE_MASK 0x7F /* Pulse mask */
+#define MCE_MAX_PULSE_LENGTH 0x7F /* Longest transmittable pulse symbol */
+#define MCE_PACKET_LENGTH_MASK 0xF /* Packet length mask */
+
+
+/* module parameters */
+#ifdef CONFIG_USB_DEBUG
+static int debug = 1;
+#else
+static int debug;
+#endif
+
+/* general constants */
+#define SEND_FLAG_IN_PROGRESS 1
+#define SEND_FLAG_COMPLETE 2
+#define RECV_FLAG_IN_PROGRESS 3
+#define RECV_FLAG_COMPLETE 4
+
+#define MCEUSB_RX 1
+#define MCEUSB_TX 2
+
+#define VENDOR_PHILIPS 0x0471
+#define VENDOR_SMK 0x0609
+#define VENDOR_TATUNG 0x1460
+#define VENDOR_GATEWAY 0x107b
+#define VENDOR_SHUTTLE 0x1308
+#define VENDOR_SHUTTLE2 0x051c
+#define VENDOR_MITSUMI 0x03ee
+#define VENDOR_TOPSEED 0x1784
+#define VENDOR_RICAVISION 0x179d
+#define VENDOR_ITRON 0x195d
+#define VENDOR_FIC 0x1509
+#define VENDOR_LG 0x043e
+#define VENDOR_MICROSOFT 0x045e
+#define VENDOR_FORMOSA 0x147a
+#define VENDOR_FINTEK 0x1934
+#define VENDOR_PINNACLE 0x2304
+#define VENDOR_ECS 0x1019
+#define VENDOR_WISTRON 0x0fb8
+#define VENDOR_COMPRO 0x185b
+#define VENDOR_NORTHSTAR 0x04eb
+#define VENDOR_REALTEK 0x0bda
+#define VENDOR_TIVO 0x105a
+
+static struct usb_device_id mceusb_dev_table[] = {
+ /* Original Microsoft MCE IR Transceiver (often HP-branded) */
+ { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
+ /* Philips Infrared Transceiver - Sahara branded */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
+ /* Philips Infrared Transceiver - HP branded */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
+ /* Philips SRM5100 */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
+ /* Philips Infrared Transceiver - Omaura */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
+ /* Philips Infrared Transceiver - Spinel plus */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
+ /* Philips eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
+ /* Realtek MCE IR Receiver */
+ { USB_DEVICE(VENDOR_REALTEK, 0x0161) },
+ /* SMK/Toshiba G83C0004D410 */
+ { USB_DEVICE(VENDOR_SMK, 0x031d) },
+ /* SMK eHome Infrared Transceiver (Sony VAIO) */
+ { USB_DEVICE(VENDOR_SMK, 0x0322) },
+ /* bundled with Hauppauge PVR-150 */
+ { USB_DEVICE(VENDOR_SMK, 0x0334) },
+ /* SMK eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_SMK, 0x0338) },
+ /* Tatung eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
+ /* Shuttle eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
+ /* Shuttle eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
+ /* Gateway eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
+ /* Mitsumi */
+ { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
+ /* Topseed HP eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
+ /* Ricavision internal Infrared Transceiver */
+ { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
+ /* Itron ione Libra Q-11 */
+ { USB_DEVICE(VENDOR_ITRON, 0x7002) },
+ /* FIC eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_FIC, 0x9242) },
+ /* LG eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_LG, 0x9803) },
+ /* Microsoft MCE Infrared Transceiver */
+ { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
+ /* Formosa eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
+ /* Formosa21 / eHome Infrared Receiver */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
+ /* Formosa aim / Trust MCE Infrared Receiver */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe017) },
+ /* Formosa Industrial Computing / Beanbag Emulation Device */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
+ /* Formosa21 / eHome Infrared Receiver */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
+ /* Formosa Industrial Computing AIM IR605/A */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
+ /* Fintek eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
+ /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
+ { USB_DEVICE(VENDOR_FINTEK, 0x0702) },
+ /* Pinnacle Remote Kit */
+ { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
+ /* Elitegroup Computer Systems IR */
+ { USB_DEVICE(VENDOR_ECS, 0x0f38) },
+ /* Wistron Corp. eHome Infrared Receiver */
+ { USB_DEVICE(VENDOR_WISTRON, 0x0002) },
+ /* Compro K100 */
+ { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
+ /* Compro K100 v2 */
+ { USB_DEVICE(VENDOR_COMPRO, 0x3082) },
+ /* Northstar Systems, Inc. eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
+ /* TiVo PC IR Receiver */
+ { USB_DEVICE(VENDOR_TIVO, 0x2000) },
+ /* Terminating entry */
+ { }
+};
+
+static struct usb_device_id gen3_list[] = {
+ { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
+ {}
+};
+
+static struct usb_device_id pinnacle_list[] = {
+ { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
+ {}
+};
+
+static struct usb_device_id microsoft_gen1_list[] = {
+ { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
+ {}
+};
+
+/* data structure for each usb transceiver */
+struct mceusb_dev {
+ /* ir-core bits */
+ struct ir_input_dev *irdev;
+ struct ir_dev_props *props;
+ struct ir_input_state *state;
+ struct ir_raw_event rawir;
+
+ /* core device bits */
+ struct device *dev;
+ struct input_dev *idev;
+
+ /* usb */
+ struct usb_device *usbdev;
+ struct urb *urb_in;
+ struct usb_endpoint_descriptor *usb_ep_in;
+ struct usb_endpoint_descriptor *usb_ep_out;
+
+ /* buffers and dma */
+ unsigned char *buf_in;
+ unsigned int len_in;
+ u8 cmd; /* MCE command type */
+ u8 rem; /* Remaining IR data bytes in packet */
+ dma_addr_t dma_in;
+ dma_addr_t dma_out;
+
+ struct {
+ u32 connected:1;
+ u32 def_xmit_mask_set:1;
+ u32 microsoft_gen1:1;
+ u32 gen3:1;
+ u32 reserved:28;
+ } flags;
+
+ /* handle sending (init strings) */
+ int send_flags;
+ int carrier;
+
+ char name[128];
+ char phys[64];
+
+ unsigned char def_xmit_mask;
+ unsigned char cur_xmit_mask;
+};
+
+/*
+ * MCE Device Command Strings
+ * Device command responses vary from device to device...
+ * - DEVICE_RESET resets the hardware to its default state
+ * - GET_REVISION fetches the hardware/software revision, common
+ * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42
+ * - GET_CARRIER_FREQ gets the carrier mode and frequency of the
+ * device, with replies in the form of 9f 06 MM FF, where MM is 0-3,
+ * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is
+ * ((clk / frequency) - 1)
+ * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us,
+ * response in the form of 9f 0c msb lsb
+ * - GET_TX_BITMASK fetches the transmitter bitmask, replies in
+ * the form of 9f 08 bm, where bm is the bitmask
+ * - GET_RX_SENSOR fetches the RX sensor setting -- long-range
+ * general use one or short-range learning one, in the form of
+ * 9f 14 ss, where ss is either 01 for long-range or 02 for short
+ * - SET_CARRIER_FREQ sets a new carrier mode and frequency
+ * - SET_TX_BITMASK sets the transmitter bitmask
+ * - SET_RX_TIMEOUT sets the receiver timeout
+ * - SET_RX_SENSOR sets which receiver sensor to use
+ */
+static char DEVICE_RESET[] = {0x00, 0xff, 0xaa};
+static char GET_REVISION[] = {0xff, 0x0b};
+static char GET_UNKNOWN[] = {0xff, 0x18};
+static char GET_CARRIER_FREQ[] = {0x9f, 0x07};
+static char GET_RX_TIMEOUT[] = {0x9f, 0x0d};
+static char GET_TX_BITMASK[] = {0x9f, 0x13};
+static char GET_RX_SENSOR[] = {0x9f, 0x15};
+/* sub in desired values in lower byte or bytes for full command */
+static char SET_CARRIER_FREQ[] = {0x9f, 0x06, 0x00, 0x00};
+static char SET_TX_BITMASK[] = {0x9f, 0x08, 0x00};
+static char SET_RX_TIMEOUT[] = {0x9f, 0x0c, 0x00, 0x00};
+static char SET_RX_SENSOR[] = {0x9f, 0x14, 0x00};
+
+static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
+ int len, bool out)
+{
+ char codes[USB_BUFLEN * 3 + 1];
+ char inout[9];
+ int i;
+ u8 cmd, subcmd, data1, data2;
+ struct device *dev = ir->dev;
+
+ if (len <= 0)
+ return;
+
+ if (ir->flags.microsoft_gen1 && len <= 2)
+ return;
+
+ for (i = 0; i < len && i < USB_BUFLEN; i++)
+ snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xFF);
+
+ dev_info(dev, "%sx data: %s (length=%d)\n",
+ (out ? "t" : "r"), codes, len);
+
+ if (out)
+ strcpy(inout, "Request\0");
+ else
+ strcpy(inout, "Got\0");
+
+ cmd = buf[0] & 0xff;
+ subcmd = buf[1] & 0xff;
+ data1 = buf[2] & 0xff;
+ data2 = buf[3] & 0xff;
+
+ switch (cmd) {
+ case 0x00:
+ if (subcmd == 0xff && data1 == 0xaa)
+ dev_info(dev, "Device reset requested\n");
+ else
+ dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
+ cmd, subcmd);
+ break;
+ case 0xff:
+ switch (subcmd) {
+ case 0x0b:
+ if (len == 2)
+ dev_info(dev, "Get hw/sw rev?\n");
+ else
+ dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
+ "0x%02x 0x%02x\n", data1, data2,
+ buf[4], buf[5]);
+ break;
+ case 0xaa:
+ dev_info(dev, "Device reset requested\n");
+ break;
+ case 0xfe:
+ dev_info(dev, "Previous command not supported\n");
+ break;
+ case 0x18:
+ case 0x1b:
+ default:
+ dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
+ cmd, subcmd);
+ break;
+ }
+ break;
+ case 0x9f:
+ switch (subcmd) {
+ case 0x03:
+ dev_info(dev, "Ping\n");
+ break;
+ case 0x04:
+ dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
+ data1, data2);
+ break;
+ case 0x06:
+ dev_info(dev, "%s carrier mode and freq of "
+ "0x%02x 0x%02x\n", inout, data1, data2);
+ break;
+ case 0x07:
+ dev_info(dev, "Get carrier mode and freq\n");
+ break;
+ case 0x08:
+ dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
+ inout, data1);
+ break;
+ case 0x0c:
+ /* value is in units of 50us, so x*50/100 or x/2 ms */
+ dev_info(dev, "%s receive timeout of %d ms\n",
+ inout, ((data1 << 8) | data2) / 2);
+ break;
+ case 0x0d:
+ dev_info(dev, "Get receive timeout\n");
+ break;
+ case 0x13:
+ dev_info(dev, "Get transmit blaster mask\n");
+ break;
+ case 0x14:
+ dev_info(dev, "%s %s-range receive sensor in use\n",
+ inout, data1 == 0x02 ? "short" : "long");
+ break;
+ case 0x15:
+ if (len == 2)
+ dev_info(dev, "Get receive sensor\n");
+ else
+ dev_info(dev, "Received pulse count is %d\n",
+ ((data1 << 8) | data2));
+ break;
+ case 0xfe:
+ dev_info(dev, "Error! Hardware is likely wedged...\n");
+ break;
+ case 0x05:
+ case 0x09:
+ case 0x0f:
+ default:
+ dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
+ cmd, subcmd);
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static void usb_async_callback(struct urb *urb, struct pt_regs *regs)
+{
+ struct mceusb_dev *ir;
+ int len;
+
+ if (!urb)
+ return;
+
+ ir = urb->context;
+ if (ir) {
+ len = urb->actual_length;
+
+ dev_dbg(ir->dev, "callback called (status=%d len=%d)\n",
+ urb->status, len);
+
+ if (debug)
+ mceusb_dev_printdata(ir, urb->transfer_buffer,
+ len, true);
+ }
+
+}
+
+/* request incoming or send outgoing usb packet - used to initialize remote */
+static void mce_request_packet(struct mceusb_dev *ir,
+ struct usb_endpoint_descriptor *ep,
+ unsigned char *data, int size, int urb_type)
+{
+ int res;
+ struct urb *async_urb;
+ struct device *dev = ir->dev;
+ unsigned char *async_buf;
+
+ if (urb_type == MCEUSB_TX) {
+ async_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (unlikely(!async_urb)) {
+ dev_err(dev, "Error, couldn't allocate urb!\n");
+ return;
+ }
+
+ async_buf = kzalloc(size, GFP_KERNEL);
+ if (!async_buf) {
+ dev_err(dev, "Error, couldn't allocate buf!\n");
+ usb_free_urb(async_urb);
+ return;
+ }
+
+ /* outbound data */
+ usb_fill_int_urb(async_urb, ir->usbdev,
+ usb_sndintpipe(ir->usbdev, ep->bEndpointAddress),
+ async_buf, size, (usb_complete_t) usb_async_callback,
+ ir, ep->bInterval);
+ memcpy(async_buf, data, size);
+
+ } else if (urb_type == MCEUSB_RX) {
+ /* standard request */
+ async_urb = ir->urb_in;
+ ir->send_flags = RECV_FLAG_IN_PROGRESS;
+
+ } else {
+ dev_err(dev, "Error! Unknown urb type %d\n", urb_type);
+ return;
+ }
+
+ dev_dbg(dev, "receive request called (size=%#x)\n", size);
+
+ async_urb->transfer_buffer_length = size;
+ async_urb->dev = ir->usbdev;
+
+ res = usb_submit_urb(async_urb, GFP_ATOMIC);
+ if (res) {
+ dev_dbg(dev, "receive request FAILED! (res=%d)\n", res);
+ return;
+ }
+ dev_dbg(dev, "receive request complete (res=%d)\n", res);
+}
+
+static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size)
+{
+ mce_request_packet(ir, ir->usb_ep_out, data, size, MCEUSB_TX);
+}
+
+static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size)
+{
+ mce_request_packet(ir, ir->usb_ep_in, data, size, MCEUSB_RX);
+}
+
+static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
+{
+ struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
+ int i, start_index = 0;
+
+ /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
+ if (ir->flags.microsoft_gen1)
+ start_index = 2;
+
+ for (i = start_index; i < buf_len;) {
+ if (ir->rem == 0) {
+ /* decode mce packets of the form (84),AA,BB,CC,DD */
+ /* IR data packets can span USB messages - rem */
+ ir->rem = (ir->buf_in[i] & MCE_PACKET_LENGTH_MASK);
+ ir->cmd = (ir->buf_in[i] & ~MCE_PACKET_LENGTH_MASK);
+ dev_dbg(ir->dev, "New data. rem: 0x%02x, cmd: 0x%02x\n",
+ ir->rem, ir->cmd);
+ i++;
+ }
+
+ /* Only cmd 0x8<bytes> is IR data, don't process MCE commands */
+ if (ir->cmd != 0x80) {
+ ir->rem = 0;
+ return;
+ }
+
+ for (; (ir->rem > 0) && (i < buf_len); i++) {
+ ir->rem--;
+
+ rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
+ rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK)
+ * MCE_TIME_UNIT * 1000;
+
+ if ((ir->buf_in[i] & MCE_PULSE_MASK) == 0x7f) {
+ if (ir->rawir.pulse == rawir.pulse)
+ ir->rawir.duration += rawir.duration;
+ else {
+ ir->rawir.duration = rawir.duration;
+ ir->rawir.pulse = rawir.pulse;
+ }
+ continue;
+ }
+ rawir.duration += ir->rawir.duration;
+ ir->rawir.duration = 0;
+ ir->rawir.pulse = rawir.pulse;
+
+ dev_dbg(ir->dev, "Storing %s with duration %d\n",
+ rawir.pulse ? "pulse" : "space",
+ rawir.duration);
+
+ ir_raw_event_store(ir->idev, &rawir);
+ }
+
+ if (ir->buf_in[i] == 0x80 || ir->buf_in[i] == 0x9f) {
+ dev_dbg(ir->dev, "calling ir_raw_event_handle\n");
+ ir->rem = 0;
+ ir_raw_event_handle(ir->idev);
+ }
+ }
+}
+
+static void mceusb_set_default_xmit_mask(struct urb *urb)
+{
+ struct mceusb_dev *ir = urb->context;
+ char *buffer = urb->transfer_buffer;
+ u8 cmd, subcmd, def_xmit_mask;
+
+ cmd = buffer[0] & 0xff;
+ subcmd = buffer[1] & 0xff;
+
+ if (cmd == 0x9f && subcmd == 0x08) {
+ def_xmit_mask = buffer[2] & 0xff;
+ dev_dbg(ir->dev, "%s: setting xmit mask to 0x%02x\n",
+ __func__, def_xmit_mask);
+ ir->def_xmit_mask = def_xmit_mask;
+ ir->flags.def_xmit_mask_set = 1;
+ }
+}
+
+static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
+{
+ struct mceusb_dev *ir;
+ int buf_len;
+
+ if (!urb)
+ return;
+
+ ir = urb->context;
+ if (!ir) {
+ usb_unlink_urb(urb);
+ return;
+ }
+
+ buf_len = urb->actual_length;
+
+ if (!ir->flags.def_xmit_mask_set)
+ mceusb_set_default_xmit_mask(urb);
+
+ if (debug)
+ mceusb_dev_printdata(ir, urb->transfer_buffer, buf_len, false);
+
+ if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
+ ir->send_flags = SEND_FLAG_COMPLETE;
+ dev_dbg(&ir->irdev->dev, "setup answer received %d bytes\n",
+ buf_len);
+ }
+
+ switch (urb->status) {
+ /* success */
+ case 0:
+ mceusb_process_ir_data(ir, buf_len);
+ break;
+
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ usb_unlink_urb(urb);
+ return;
+
+ case -EPIPE:
+ default:
+ break;
+ }
+
+ usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static void mceusb_gen1_init(struct mceusb_dev *ir)
+{
+ int i, ret;
+ char junk[64], data[8];
+ int partial = 0;
+ struct device *dev = ir->dev;
+
+ /*
+ * Clear off the first few messages. These look like calibration
+ * or test data, I can't really tell. This also flushes in case
+ * we have random ir data queued up.
+ */
+ for (i = 0; i < 40; i++)
+ usb_bulk_msg(ir->usbdev,
+ usb_rcvbulkpipe(ir->usbdev,
+ ir->usb_ep_in->bEndpointAddress),
+ junk, 64, &partial, HZ * 10);
+
+ memset(data, 0, 8);
+
+ /* Get Status */
+ ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
+ USB_REQ_GET_STATUS, USB_DIR_IN,
+ 0, 0, data, 2, HZ * 3);
+
+ /* ret = usb_get_status( ir->usbdev, 0, 0, data ); */
+ dev_dbg(dev, "%s - ret = %d status = 0x%x 0x%x\n", __func__,
+ ret, data[0], data[1]);
+
+ /*
+ * This is a strange one. They issue a set address to the device
+ * on the receive control pipe and expect a certain value pair back
+ */
+ memset(data, 0, 8);
+
+ ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
+ USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
+ data, 2, HZ * 3);
+ dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
+ dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
+ __func__, data[0], data[1]);
+
+ /* set feature: bit rate 38400 bps */
+ ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
+ USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
+ 0xc04e, 0x0000, NULL, 0, HZ * 3);
+
+ dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
+
+ /* bRequest 4: set char length to 8 bits */
+ ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
+ 4, USB_TYPE_VENDOR,
+ 0x0808, 0x0000, NULL, 0, HZ * 3);
+ dev_dbg(dev, "%s - retB = %d\n", __func__, ret);
+
+ /* bRequest 2: set handshaking to use DTR/DSR */
+ ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
+ 2, USB_TYPE_VENDOR,
+ 0x0000, 0x0100, NULL, 0, HZ * 3);
+ dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
+};
+
+static void mceusb_gen2_init(struct mceusb_dev *ir)
+{
+ int maxp = ir->len_in;
+
+ mce_sync_in(ir, NULL, maxp);
+ mce_sync_in(ir, NULL, maxp);
+
+ /* device reset */
+ mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
+ mce_sync_in(ir, NULL, maxp);
+
+ /* get hw/sw revision? */
+ mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
+ mce_sync_in(ir, NULL, maxp);
+
+ /* unknown what this actually returns... */
+ mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN));
+ mce_sync_in(ir, NULL, maxp);
+}
+
+static void mceusb_gen3_init(struct mceusb_dev *ir)
+{
+ int maxp = ir->len_in;
+
+ mce_sync_in(ir, NULL, maxp);
+
+ /* device reset */
+ mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
+ mce_sync_in(ir, NULL, maxp);
+
+ /* get the carrier and frequency */
+ mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
+ mce_sync_in(ir, NULL, maxp);
+
+ /* get the transmitter bitmask */
+ mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
+ mce_sync_in(ir, NULL, maxp);
+
+ /* get receiver timeout value */
+ mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
+ mce_sync_in(ir, NULL, maxp);
+
+ /* get receiver sensor setting */
+ mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
+ mce_sync_in(ir, NULL, maxp);
+}
+
+static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
+{
+ struct input_dev *idev;
+ struct ir_dev_props *props;
+ struct ir_input_dev *irdev;
+ struct ir_input_state *state;
+ struct device *dev = ir->dev;
+ int ret = -ENODEV;
+
+ idev = input_allocate_device();
+ if (!idev) {
+ dev_err(dev, "remote input dev allocation failed\n");
+ goto idev_alloc_failed;
+ }
+
+ ret = -ENOMEM;
+ props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
+ if (!props) {
+ dev_err(dev, "remote ir dev props allocation failed\n");
+ goto props_alloc_failed;
+ }
+
+ irdev = kzalloc(sizeof(struct ir_input_dev), GFP_KERNEL);
+ if (!irdev) {
+ dev_err(dev, "remote ir input dev allocation failed\n");
+ goto ir_dev_alloc_failed;
+ }
+
+ state = kzalloc(sizeof(struct ir_input_state), GFP_KERNEL);
+ if (!state) {
+ dev_err(dev, "remote ir state allocation failed\n");
+ goto ir_state_alloc_failed;
+ }
+
+ snprintf(ir->name, sizeof(ir->name), "Media Center Edition eHome "
+ "Infrared Remote Transceiver (%04x:%04x)",
+ le16_to_cpu(ir->usbdev->descriptor.idVendor),
+ le16_to_cpu(ir->usbdev->descriptor.idProduct));
+
+ ret = ir_input_init(idev, state, IR_TYPE_RC6);
+ if (ret < 0)
+ goto irdev_failed;
+
+ idev->name = ir->name;
+
+ usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
+ strlcat(ir->phys, "/input0", sizeof(ir->phys));
+ idev->phys = ir->phys;
+
+ /* FIXME: no EV_REP (yet), we may need our own auto-repeat handling */
+ idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+
+ idev->keybit[BIT_WORD(BTN_MOUSE)] =
+ BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
+ idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
+ BIT_MASK(REL_WHEEL);
+
+ props->priv = ir;
+ props->driver_type = RC_DRIVER_IR_RAW;
+ props->allowed_protos = IR_TYPE_ALL;
+
+ ir->props = props;
+ ir->irdev = irdev;
+ ir->state = state;
+
+ input_set_drvdata(idev, irdev);
+
+ ret = ir_input_register(idev, RC_MAP_RC6_MCE, props, DRIVER_NAME);
+ if (ret < 0) {
+ dev_err(dev, "remote input device register failed\n");
+ goto irdev_failed;
+ }
+
+ return idev;
+
+irdev_failed:
+ kfree(state);
+ir_state_alloc_failed:
+ kfree(irdev);
+ir_dev_alloc_failed:
+ kfree(props);
+props_alloc_failed:
+ input_free_device(idev);
+idev_alloc_failed:
+ return NULL;
+}
+
+static int __devinit mceusb_dev_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct usb_host_interface *idesc;
+ struct usb_endpoint_descriptor *ep = NULL;
+ struct usb_endpoint_descriptor *ep_in = NULL;
+ struct usb_endpoint_descriptor *ep_out = NULL;
+ struct usb_host_config *config;
+ struct mceusb_dev *ir = NULL;
+ int pipe, maxp;
+ int i, ret;
+ char buf[63], name[128] = "";
+ bool is_gen3;
+ bool is_microsoft_gen1;
+ bool is_pinnacle;
+
+ dev_dbg(&intf->dev, ": %s called\n", __func__);
+
+ usb_reset_device(dev);
+
+ config = dev->actconfig;
+ idesc = intf->cur_altsetting;
+
+ is_gen3 = usb_match_id(intf, gen3_list) ? 1 : 0;
+ is_microsoft_gen1 = usb_match_id(intf, microsoft_gen1_list) ? 1 : 0;
+ is_pinnacle = usb_match_id(intf, pinnacle_list) ? 1 : 0;
+
+ /* step through the endpoints to find first bulk in and out endpoint */
+ for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
+ ep = &idesc->endpoint[i].desc;
+
+ if ((ep_in == NULL)
+ && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ == USB_DIR_IN)
+ && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_BULK)
+ || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_INT))) {
+
+ dev_dbg(&intf->dev, ": acceptable inbound endpoint "
+ "found\n");
+ ep_in = ep;
+ ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
+ if (!is_pinnacle)
+ /*
+ * Ideally, we'd use what the device offers up,
+ * but that leads to non-functioning first and
+ * second-gen devices, and many devices have an
+ * invalid bInterval of 0. Pinnacle devices
+ * don't work witha bInterval of 1 though.
+ */
+ ep_in->bInterval = 1;
+ }
+
+ if ((ep_out == NULL)
+ && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ == USB_DIR_OUT)
+ && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_BULK)
+ || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_INT))) {
+
+ dev_dbg(&intf->dev, ": acceptable outbound endpoint "
+ "found\n");
+ ep_out = ep;
+ ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
+ if (!is_pinnacle)
+ /*
+ * Ideally, we'd use what the device offers up,
+ * but that leads to non-functioning first and
+ * second-gen devices, and many devices have an
+ * invalid bInterval of 0. Pinnacle devices
+ * don't work witha bInterval of 1 though.
+ */
+ ep_out->bInterval = 1;
+ }
+ }
+ if (ep_in == NULL) {
+ dev_dbg(&intf->dev, ": inbound and/or endpoint not found\n");
+ return -ENODEV;
+ }
+
+ pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
+ maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+
+ ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
+ if (!ir)
+ goto mem_alloc_fail;
+
+ ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
+ if (!ir->buf_in)
+ goto buf_in_alloc_fail;
+
+ ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
+ if (!ir->urb_in)
+ goto urb_in_alloc_fail;
+
+ ir->usbdev = dev;
+ ir->dev = &intf->dev;
+ ir->len_in = maxp;
+ ir->flags.gen3 = is_gen3;
+ ir->flags.microsoft_gen1 = is_microsoft_gen1;
+
+ /* Saving usb interface data for use by the transmitter routine */
+ ir->usb_ep_in = ep_in;
+ ir->usb_ep_out = ep_out;
+
+ if (dev->descriptor.iManufacturer
+ && usb_string(dev, dev->descriptor.iManufacturer,
+ buf, sizeof(buf)) > 0)
+ strlcpy(name, buf, sizeof(name));
+ if (dev->descriptor.iProduct
+ && usb_string(dev, dev->descriptor.iProduct,
+ buf, sizeof(buf)) > 0)
+ snprintf(name + strlen(name), sizeof(name) - strlen(name),
+ " %s", buf);
+
+ ir->idev = mceusb_init_input_dev(ir);
+ if (!ir->idev)
+ goto input_dev_fail;
+
+ /* inbound data */
+ usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
+ maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval);
+ ir->urb_in->transfer_dma = ir->dma_in;
+ ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ if (is_pinnacle) {
+ /*
+ * I have no idea why but this reset seems to be crucial to
+ * getting the device to do outbound IO correctly - without
+ * this the device seems to hang, ignoring all input - although
+ * IR signals are correctly sent from the device, no input is
+ * interpreted by the device and the host never does the
+ * completion routine
+ */
+ ret = usb_reset_configuration(dev);
+ dev_info(&intf->dev, "usb reset config ret %x\n", ret);
+ }
+
+ /* initialize device */
+ if (ir->flags.gen3)
+ mceusb_gen3_init(ir);
+
+ else if (ir->flags.microsoft_gen1)
+ mceusb_gen1_init(ir);
+
+ else
+ mceusb_gen2_init(ir);
+
+ mce_sync_in(ir, NULL, maxp);
+
+ /* We've already done this on gen3 devices */
+ if (!ir->flags.def_xmit_mask_set) {
+ mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
+ mce_sync_in(ir, NULL, maxp);
+ }
+
+ usb_set_intfdata(intf, ir);
+
+ dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name,
+ dev->bus->busnum, dev->devnum);
+
+ return 0;
+
+ /* Error-handling path */
+input_dev_fail:
+ usb_free_urb(ir->urb_in);
+urb_in_alloc_fail:
+ usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
+buf_in_alloc_fail:
+ kfree(ir);
+mem_alloc_fail:
+ dev_err(&intf->dev, "%s: device setup failed!\n", __func__);
+
+ return -ENOMEM;
+}
+
+
+static void __devexit mceusb_dev_disconnect(struct usb_interface *intf)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct mceusb_dev *ir = usb_get_intfdata(intf);
+
+ usb_set_intfdata(intf, NULL);
+
+ if (!ir)
+ return;
+
+ ir->usbdev = NULL;
+ input_unregister_device(ir->idev);
+ usb_kill_urb(ir->urb_in);
+ usb_free_urb(ir->urb_in);
+ usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
+
+ kfree(ir);
+}
+
+static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct mceusb_dev *ir = usb_get_intfdata(intf);
+ dev_info(ir->dev, "suspend\n");
+ usb_kill_urb(ir->urb_in);
+ return 0;
+}
+
+static int mceusb_dev_resume(struct usb_interface *intf)
+{
+ struct mceusb_dev *ir = usb_get_intfdata(intf);
+ dev_info(ir->dev, "resume\n");
+ if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
+ return -EIO;
+ return 0;
+}
+
+static struct usb_driver mceusb_dev_driver = {
+ .name = DRIVER_NAME,
+ .probe = mceusb_dev_probe,
+ .disconnect = mceusb_dev_disconnect,
+ .suspend = mceusb_dev_suspend,
+ .resume = mceusb_dev_resume,
+ .reset_resume = mceusb_dev_resume,
+ .id_table = mceusb_dev_table
+};
+
+static int __init mceusb_dev_init(void)
+{
+ int ret;
+
+ ret = usb_register(&mceusb_dev_driver);
+ if (ret < 0)
+ printk(KERN_ERR DRIVER_NAME
+ ": usb register failed, result = %d\n", ret);
+
+ return ret;
+}
+
+static void __exit mceusb_dev_exit(void)
+{
+ usb_deregister(&mceusb_dev_driver);
+}
+
+module_init(mceusb_dev_init);
+module_exit(mceusb_dev_exit);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
--
Jarod Wilson
jarod@xxxxxxxxxx
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
