1 files changed, 63 insertions, 0 deletions

diff --git a/sound/pci/pcxhr/pcxhr.c b/sound/pci/pcxhr/pcxhr.c
index 0435f45e9513..e3ac1f768ff6 100644
--- a/sound/pci/pcxhr/pcxhr.c
+++ b/sound/pci/pcxhr/pcxhr.c
@@ -1368,6 +1368,67 @@ static void pcxhr_proc_gpo_write(struct snd_info_entry *entry,
         }
 }
 
+/* Access to the results of the CMD_GET_TIME_CODE RMH */
+#define TIME_CODE_VALID_MASK    0x00800000
+#define TIME_CODE_NEW_MASK      0x00400000
+#define TIME_CODE_BACK_MASK     0x00200000
+#define TIME_CODE_WAIT_MASK     0x00100000
+
+/* Values for the CMD_MANAGE_SIGNAL RMH */
+#define MANAGE_SIGNAL_TIME_CODE 0x01
+#define MANAGE_SIGNAL_MIDI      0x02
+
+/* linear time code read proc*/
+static void pcxhr_proc_ltc(struct snd_info_entry *entry,
+                           struct snd_info_buffer *buffer)
+{
+        struct snd_pcxhr *chip = entry->private_data;
+        struct pcxhr_mgr *mgr = chip->mgr;
+        struct pcxhr_rmh rmh;
+        unsigned int ltcHrs, ltcMin, ltcSec, ltcFrm;
+        int err;
+        /* commands available when embedded DSP is running */
+        if (!(mgr->dsp_loaded & (1 << PCXHR_FIRMWARE_DSP_MAIN_INDEX))) {
+                snd_iprintf(buffer, "no firmware loaded\n");
+                return;
+        }
+        if (!mgr->capture_ltc) {
+                pcxhr_init_rmh(&rmh, CMD_MANAGE_SIGNAL);
+                rmh.cmd[0] |= MANAGE_SIGNAL_TIME_CODE;
+                err = pcxhr_send_msg(mgr, &rmh);
+                if (err) {
+                        snd_iprintf(buffer, "ltc not activated (%d)\n", err);
+                        return;
+                }
+                if (mgr->is_hr_stereo)
+                        hr222_manage_timecode(mgr, 1);
+                else
+                        pcxhr_write_io_num_reg_cont(mgr, REG_CONT_VALSMPTE,
+                                                    REG_CONT_VALSMPTE, NULL);
+                mgr->capture_ltc = 1;
+        }
+        pcxhr_init_rmh(&rmh, CMD_GET_TIME_CODE);
+        err = pcxhr_send_msg(mgr, &rmh);
+        if (err) {
+                snd_iprintf(buffer, "ltc read error (err=%d)\n", err);
+                return ;
+        }
+        ltcHrs = 10*((rmh.stat[0] >> 8) & 0x3) + (rmh.stat[0] & 0xf);
+        ltcMin = 10*((rmh.stat[1] >> 16) & 0x7) + ((rmh.stat[1] >> 8) & 0xf);
+        ltcSec = 10*(rmh.stat[1] & 0x7) + ((rmh.stat[2] >> 16) & 0xf);
+        ltcFrm = 10*((rmh.stat[2] >> 8) & 0x3) + (rmh.stat[2] & 0xf);
+
+        snd_iprintf(buffer, "timecode: %02u:%02u:%02u-%02u\n",
+                            ltcHrs, ltcMin, ltcSec, ltcFrm);
+        snd_iprintf(buffer, "raw: 0x%04x%06x%06x\n", rmh.stat[0] & 0x00ffff,
+                            rmh.stat[1] & 0xffffff, rmh.stat[2] & 0xffffff);
+        /*snd_iprintf(buffer, "dsp ref time: 0x%06x%06x\n",
+                            rmh.stat[3] & 0xffffff, rmh.stat[4] & 0xffffff);*/
+        if (!(rmh.stat[0] & TIME_CODE_VALID_MASK)) {
+                snd_iprintf(buffer, "warning: linear timecode not valid\n");
+        }
+}
+
 static void __devinit pcxhr_proc_init(struct snd_pcxhr *chip)
 {
         struct snd_info_entry *entry;
@@ -1383,6 +1444,8 @@ static void __devinit pcxhr_proc_init(struct snd_pcxhr *chip)
                 entry->c.text.write = pcxhr_proc_gpo_write;
                 entry->mode |= S_IWUSR;
         }
+        if (!snd_card_proc_new(chip->card, "ltc", &entry))
+                snd_info_set_text_ops(entry, chip, pcxhr_proc_ltc);
 }
 /* end of proc interface */