V4L/DVB (11744): pvrusb2: Select, track, and report IR scheme in use with the device

This change defines all possible "IR schemes" related to the pvrusb2
driver, on a per-device basis.  That information is then set according
to the hardware in use.  The idea here is to make possible a more
intelligent future decision on which, if any, IR receiver driver might
be loaded during initialization.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index add3395d3248..686df1afbbaf 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -142,6 +142,15 @@ static const unsigned char *module_i2c_addresses[] = {
 };
 
 
+static const char *ir_scheme_names[] = {
+        [PVR2_IR_SCHEME_NONE] = "none",
+        [PVR2_IR_SCHEME_29XXX] = "29xxx",
+        [PVR2_IR_SCHEME_24XXX] = "24xxx (29xxx emulation)",
+        [PVR2_IR_SCHEME_24XXX_MCE] = "24xxx (MCE device)",
+        [PVR2_IR_SCHEME_ZILOG] = "Zilog",
+};
+
+
 /* Define the list of additional controls we'll dynamically construct based
    on query of the cx2341x module. */
 struct pvr2_mpeg_ids {
@@ -2170,7 +2179,7 @@ static void pvr2_hdw_setup_low(struct pvr2_hdw *hdw)
         }
 
         /* Take the IR chip out of reset, if appropriate */
-        if (hdw->hdw_desc->ir_scheme == PVR2_IR_SCHEME_ZILOG) {
+        if (hdw->ir_scheme_active == PVR2_IR_SCHEME_ZILOG) {
                 pvr2_issue_simple_cmd(hdw,
                                       FX2CMD_HCW_ZILOG_RESET |
                                       (1 << 8) |
@@ -2451,6 +2460,7 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
                                 GFP_KERNEL);
         if (!hdw->controls) goto fail;
         hdw->hdw_desc = hdw_desc;
+        hdw->ir_scheme_active = hdw->hdw_desc->ir_scheme;
         for (idx = 0; idx < hdw->control_cnt; idx++) {
                 cptr = hdw->controls + idx;
                 cptr->hdw = hdw;
@@ -4809,6 +4819,12 @@ static unsigned int pvr2_hdw_report_unlocked(struct pvr2_hdw *hdw,int which,
                         stats.buffers_processed,
                         stats.buffers_failed);
         }
+        case 6: {
+                unsigned int id = hdw->ir_scheme_active;
+                return scnprintf(buf, acnt, "ir scheme: id=%d %s", id,
+                                 (id >= ARRAY_SIZE(ir_scheme_names) ?
+                                  "?" : ir_scheme_names[id]));
+        }
         default: break;
         }
         return 0;