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Diffstat (limited to 'drivers/media/rc/imon.c')
-rw-r--r--drivers/media/rc/imon.c138
1 files changed, 127 insertions, 11 deletions
diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index 0785a24af8fc..89823d24a384 100644
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -20,10 +20,6 @@
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
@@ -96,6 +92,7 @@ struct imon_usb_dev_descr {
__u16 flags;
#define IMON_NO_FLAGS 0
#define IMON_NEED_20MS_PKT_DELAY 1
+#define IMON_IR_RAW 2
struct imon_panel_key_table key_table[];
};
@@ -126,6 +123,12 @@ struct imon_context {
unsigned char usb_tx_buf[8];
unsigned int send_packet_delay;
+ struct rx_data {
+ int count; /* length of 0 or 1 sequence */
+ int prev_bit; /* logic level of sequence */
+ int initial_space; /* initial space flag */
+ } rx;
+
struct tx_t {
unsigned char data_buf[35]; /* user data buffer */
struct completion finished; /* wait for write to finish */
@@ -328,6 +331,10 @@ static const struct imon_usb_dev_descr imon_DH102 = {
}
};
+static const struct imon_usb_dev_descr imon_ir_raw = {
+ .flags = IMON_IR_RAW,
+};
+
/*
* USB Device ID for iMON USB Control Boards
*
@@ -411,6 +418,18 @@ static struct usb_device_id imon_usb_id_table[] = {
/* device specifics unknown */
{ USB_DEVICE(0x15c2, 0x0046),
.driver_info = (unsigned long)&imon_default_table},
+ /* TriGem iMON (IR only) -- TG_iMON.inf */
+ { USB_DEVICE(0x0aa8, 0x8001),
+ .driver_info = (unsigned long)&imon_ir_raw},
+ /* SoundGraph iMON (IR only) -- sg_imon.inf */
+ { USB_DEVICE(0x04e8, 0xff30),
+ .driver_info = (unsigned long)&imon_ir_raw},
+ /* SoundGraph iMON VFD (IR & VFD) -- iMON_VFD.inf */
+ { USB_DEVICE(0x0aa8, 0xffda),
+ .driver_info = (unsigned long)&imon_ir_raw},
+ /* SoundGraph iMON SS (IR & VFD) -- iMON_SS.inf */
+ { USB_DEVICE(0x15c2, 0xffda),
+ .driver_info = (unsigned long)&imon_ir_raw},
{}
};
@@ -1577,11 +1596,94 @@ static int imon_parse_press_type(struct imon_context *ictx,
/**
* Process the incoming packet
*/
-static void imon_incoming_packet(struct imon_context *ictx,
+/**
+ * Convert bit count to time duration (in us) and submit
+ * the value to lirc_dev.
+ */
+static void submit_data(struct imon_context *context)
+{
+ DEFINE_IR_RAW_EVENT(ev);
+
+ ev.pulse = context->rx.prev_bit;
+ ev.duration = US_TO_NS(context->rx.count * BIT_DURATION);
+ ir_raw_event_store_with_filter(context->rdev, &ev);
+}
+
+/**
+ * Process the incoming packet
+ */
+static void imon_incoming_ir_raw(struct imon_context *context,
struct urb *urb, int intf)
{
int len = urb->actual_length;
unsigned char *buf = urb->transfer_buffer;
+ struct device *dev = context->dev;
+ int octet, bit;
+ unsigned char mask;
+
+ if (len != 8) {
+ dev_warn(dev, "imon %s: invalid incoming packet size (len = %d, intf%d)\n",
+ __func__, len, intf);
+ return;
+ }
+
+ if (debug)
+ dev_info(dev, "raw packet: %*ph\n", len, buf);
+ /*
+ * Translate received data to pulse and space lengths.
+ * Received data is active low, i.e. pulses are 0 and
+ * spaces are 1.
+ *
+ * My original algorithm was essentially similar to
+ * Changwoo Ryu's with the exception that he switched
+ * the incoming bits to active high and also fed an
+ * initial space to LIRC at the start of a new sequence
+ * if the previous bit was a pulse.
+ *
+ * I've decided to adopt his algorithm.
+ */
+
+ if (buf[7] == 1 && context->rx.initial_space) {
+ /* LIRC requires a leading space */
+ context->rx.prev_bit = 0;
+ context->rx.count = 4;
+ submit_data(context);
+ context->rx.count = 0;
+ }
+
+ for (octet = 0; octet < 5; ++octet) {
+ mask = 0x80;
+ for (bit = 0; bit < 8; ++bit) {
+ int curr_bit = !(buf[octet] & mask);
+
+ if (curr_bit != context->rx.prev_bit) {
+ if (context->rx.count) {
+ submit_data(context);
+ context->rx.count = 0;
+ }
+ context->rx.prev_bit = curr_bit;
+ }
+ ++context->rx.count;
+ mask >>= 1;
+ }
+ }
+
+ if (buf[7] == 10) {
+ if (context->rx.count) {
+ submit_data(context);
+ context->rx.count = 0;
+ }
+ context->rx.initial_space = context->rx.prev_bit;
+ }
+
+ ir_raw_event_handle(context->rdev);
+}
+
+static void imon_incoming_scancode(struct imon_context *ictx,
+ struct urb *urb, int intf)
+{
+ int len = urb->actual_length;
+ unsigned char *buf = urb->transfer_buffer;
struct device *dev = ictx->dev;
unsigned long flags;
u32 kc;
@@ -1761,7 +1863,10 @@ static void usb_rx_callback_intf0(struct urb *urb)
break;
case 0:
- imon_incoming_packet(ictx, urb, intfnum);
+ if (ictx->rdev->driver_type == RC_DRIVER_IR_RAW)
+ imon_incoming_ir_raw(ictx, urb, intfnum);
+ else
+ imon_incoming_scancode(ictx, urb, intfnum);
break;
default:
@@ -1802,7 +1907,10 @@ static void usb_rx_callback_intf1(struct urb *urb)
break;
case 0:
- imon_incoming_packet(ictx, urb, intfnum);
+ if (ictx->rdev->driver_type == RC_DRIVER_IR_RAW)
+ imon_incoming_ir_raw(ictx, urb, intfnum);
+ else
+ imon_incoming_scancode(ictx, urb, intfnum);
break;
default:
@@ -1910,11 +2018,14 @@ static void imon_set_display_type(struct imon_context *ictx)
case 0x0041:
case 0x0042:
case 0x0043:
+ case 0x8001:
+ case 0xff30:
configured_display_type = IMON_DISPLAY_TYPE_NONE;
ictx->display_supported = false;
break;
case 0x0036:
case 0x0044:
+ case 0xffda:
default:
configured_display_type = IMON_DISPLAY_TYPE_VFD;
break;
@@ -1939,7 +2050,8 @@ static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x88 };
- rdev = rc_allocate_device();
+ rdev = rc_allocate_device(ictx->dev_descr->flags & IMON_IR_RAW ?
+ RC_DRIVER_IR_RAW : RC_DRIVER_SCANCODE);
if (!rdev) {
dev_err(ictx->dev, "remote control dev allocation failed\n");
goto out;
@@ -1957,8 +2069,11 @@ static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
rdev->dev.parent = ictx->dev;
rdev->priv = ictx;
- rdev->driver_type = RC_DRIVER_SCANCODE;
- rdev->allowed_protocols = RC_BIT_OTHER | RC_BIT_RC6_MCE; /* iMON PAD or MCE */
+ if (ictx->dev_descr->flags & IMON_IR_RAW)
+ rdev->allowed_protocols = RC_BIT_ALL_IR_DECODER;
+ else
+ /* iMON PAD or MCE */
+ rdev->allowed_protocols = RC_BIT_OTHER | RC_BIT_RC6_MCE;
rdev->change_protocol = imon_ir_change_protocol;
rdev->driver_name = MOD_NAME;
@@ -1976,7 +2091,8 @@ static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
imon_set_display_type(ictx);
- if (ictx->rc_type == RC_BIT_RC6_MCE)
+ if (ictx->rc_type == RC_BIT_RC6_MCE ||
+ ictx->dev_descr->flags & IMON_IR_RAW)
rdev->map_name = RC_MAP_IMON_MCE;
else
rdev->map_name = RC_MAP_IMON_PAD;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-19 23:06:40 +0100