diff options
Diffstat (limited to 'drivers/media/video/saa6588.c')
| -rw-r--r-- | drivers/media/video/saa6588.c | 60 |
1 files changed, 47 insertions, 13 deletions
diff --git a/drivers/media/video/saa6588.c b/drivers/media/video/saa6588.c index c25e81af5ce0..c3e96f070973 100644 --- a/drivers/media/video/saa6588.c +++ b/drivers/media/video/saa6588.c @@ -40,7 +40,7 @@ /* insmod options */ static unsigned int debug; static unsigned int xtal; -static unsigned int rbds; +static unsigned int mmbs; static unsigned int plvl; static unsigned int bufblocks = 100; @@ -48,8 +48,8 @@ module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "enable debug messages"); module_param(xtal, int, 0); MODULE_PARM_DESC(xtal, "select oscillator frequency (0..3), default 0"); -module_param(rbds, int, 0); -MODULE_PARM_DESC(rbds, "select mode, 0=RDS, 1=RBDS, default 0"); +module_param(mmbs, int, 0); +MODULE_PARM_DESC(mmbs, "enable MMBS mode: 0=off (default), 1=on"); module_param(plvl, int, 0); MODULE_PARM_DESC(plvl, "select pause level (0..3), default 0"); module_param(bufblocks, int, 0); @@ -78,6 +78,7 @@ struct saa6588 { unsigned char last_blocknum; wait_queue_head_t read_queue; int data_available_for_read; + u8 sync; }; static inline struct saa6588 *to_saa6588(struct v4l2_subdev *sd) @@ -261,13 +262,16 @@ static void saa6588_i2c_poll(struct saa6588 *s) unsigned char tmp; /* Although we only need 3 bytes, we have to read at least 6. - SAA6588 returns garbage otherwise */ + SAA6588 returns garbage otherwise. */ if (6 != i2c_master_recv(client, &tmpbuf[0], 6)) { if (debug > 1) dprintk(PREFIX "read error!\n"); return; } + s->sync = tmpbuf[0] & 0x10; + if (!s->sync) + return; blocknum = tmpbuf[0] >> 5; if (blocknum == s->last_blocknum) { if (debug > 3) @@ -286,9 +290,8 @@ static void saa6588_i2c_poll(struct saa6588 *s) occurred during reception of this block. Bit 6: Corrected bit. Indicates that an error was corrected for this data block. - Bits 5-3: Received Offset. Indicates the offset received - by the sync system. - Bits 2-0: Offset Name. Indicates the offset applied to this data. + Bits 5-3: Same as bits 0-2. + Bits 2-0: Block number. SAA6588 byte order is Status-MSB-LSB, so we have to swap the first and the last of the 3 bytes block. @@ -298,12 +301,21 @@ static void saa6588_i2c_poll(struct saa6588 *s) tmpbuf[2] = tmpbuf[0]; tmpbuf[0] = tmp; + /* Map 'Invalid block E' to 'Invalid Block' */ + if (blocknum == 6) + blocknum = V4L2_RDS_BLOCK_INVALID; + /* And if are not in mmbs mode, then 'Block E' is also mapped + to 'Invalid Block'. As far as I can tell MMBS is discontinued, + and if there is ever a need to support E blocks, then please + contact the linux-media mailinglist. */ + else if (!mmbs && blocknum == 5) + blocknum = V4L2_RDS_BLOCK_INVALID; tmp = blocknum; tmp |= blocknum << 3; /* Received offset == Offset Name (OK ?) */ if ((tmpbuf[2] & 0x03) == 0x03) - tmp |= 0x80; /* uncorrectable error */ + tmp |= V4L2_RDS_BLOCK_ERROR; /* uncorrectable error */ else if ((tmpbuf[2] & 0x03) != 0x00) - tmp |= 0x40; /* corrected error */ + tmp |= V4L2_RDS_BLOCK_CORRECTED; /* corrected error */ tmpbuf[2] = tmp; /* Is this enough ? Should we also check other bits ? */ spin_lock_irqsave(&s->lock, flags); @@ -321,14 +333,14 @@ static void saa6588_work(struct work_struct *work) schedule_delayed_work(&s->work, msecs_to_jiffies(20)); } -static int saa6588_configure(struct saa6588 *s) +static void saa6588_configure(struct saa6588 *s) { struct i2c_client *client = v4l2_get_subdevdata(&s->sd); unsigned char buf[3]; int rc; buf[0] = cSyncRestart; - if (rbds) + if (mmbs) buf[0] |= cProcessingModeRBDS; buf[1] = cFlywheelDefault; @@ -374,8 +386,6 @@ static int saa6588_configure(struct saa6588 *s) rc = i2c_master_send(client, buf, 3); if (rc != 3) printk(PREFIX "i2c i/o error: rc == %d (should be 3)\n", rc); - - return 0; } /* ---------------------------------------------------------------------- */ @@ -416,6 +426,24 @@ static long saa6588_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) return 0; } +static int saa6588_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) +{ + struct saa6588 *s = to_saa6588(sd); + + vt->capability |= V4L2_TUNER_CAP_RDS; + if (s->sync) + vt->rxsubchans |= V4L2_TUNER_SUB_RDS; + return 0; +} + +static int saa6588_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) +{ + struct saa6588 *s = to_saa6588(sd); + + saa6588_configure(s); + return 0; +} + static int saa6588_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) { struct i2c_client *client = v4l2_get_subdevdata(sd); @@ -430,8 +458,14 @@ static const struct v4l2_subdev_core_ops saa6588_core_ops = { .ioctl = saa6588_ioctl, }; +static const struct v4l2_subdev_tuner_ops saa6588_tuner_ops = { + .g_tuner = saa6588_g_tuner, + .s_tuner = saa6588_s_tuner, +}; + static const struct v4l2_subdev_ops saa6588_ops = { .core = &saa6588_core_ops, + .tuner = &saa6588_tuner_ops, }; /* ---------------------------------------------------------------------- */ |