V4L/DVB (3533): Add WSS (wide screen signalling) module parameters

Add wss_cfg_4_3 and wss_cfg_16_9 configuration options.
Firmware 2623 or later required.
Both parameters are bit masks:
- bit 15: disable WSS
- bit 14: send short WSS burst, then turn off WSS
- bit 13..0: WSS bits as specified by the standard
These parameters are useful if you own a broken tv set which
does not handle wss correctly.
Default settings:
- wss_cfg_4_3: 0x4008
- wss_cfg_16_9: 0x0007
These should work with most devices.

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/media/dvb/ttpci/av7110.c b/drivers/media/dvb/ttpci/av7110.c
index 5cf5b7d044ff..840efec32cb6 100644
--- a/drivers/media/dvb/ttpci/av7110.c
+++ b/drivers/media/dvb/ttpci/av7110.c
@@ -85,6 +85,8 @@ static int hw_sections;
 static int rgb_on;
 static int volume = 255;
 static int budgetpatch;
+static int wss_cfg_4_3 = 0x4008;
+static int wss_cfg_16_9 = 0x0007;
 
 module_param_named(debug, av7110_debug, int, 0644);
 MODULE_PARM_DESC(debug, "debug level (bitmask, default 0)");
@@ -103,6 +105,10 @@ module_param(volume, int, 0444);
 MODULE_PARM_DESC(volume, "initial volume: default 255 (range 0-255)");
 module_param(budgetpatch, int, 0444);
 MODULE_PARM_DESC(budgetpatch, "use budget-patch hardware modification: default 0 (0 no, 1 autodetect, 2 always)");
+module_param(wss_cfg_4_3, int, 0444);
+MODULE_PARM_DESC(wss_cfg_4_3, "WSS 4:3 - default 0x4008 - bit 15: disable, 14: burst mode, 13..0: wss data");
+module_param(wss_cfg_16_9, int, 0444);
+MODULE_PARM_DESC(wss_cfg_16_9, "WSS 16:9 - default 0x0007 - bit 15: disable, 14: burst mode, 13..0: wss data");
 
 static void restart_feeds(struct av7110 *av7110);
 
@@ -128,6 +134,13 @@ static void init_av7110_av(struct av7110 *av7110)
         if (ret < 0)
                 printk("dvb-ttpci:cannot set internal volume to maximum:%d\n",ret);
 
+        ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetWSSConfig, 2, 2, wss_cfg_4_3);
+        if (ret < 0)
+                printk("dvb-ttpci: unable to configure 4:3 wss\n");
+        ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetWSSConfig, 2, 3, wss_cfg_16_9);
+        if (ret < 0)
+                printk("dvb-ttpci: unable to configure 16:9 wss\n");
+
         ret = av7710_set_video_mode(av7110, vidmode);
         if (ret < 0)
                 printk("dvb-ttpci:cannot set video mode:%d\n",ret);