[PATCH] dvb: flexcop: woraround irq stop problem
The flexcop chip often stops generating interrupts after some hours of
operation. Apparently this can be fixed by resetting register block 0x300 at
each channel change (this is not detailed in the flexcop data books).
This patch also restructures DMA handling and adds a bit of debug code for the
irq problem in case it still happens for someone.
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/media/dvb/b2c2/flexcop.c b/drivers/media/dvb/b2c2/flexcop.c
index 8b5d14d..12873d4 100644
--- a/drivers/media/dvb/b2c2/flexcop.c
+++ b/drivers/media/dvb/b2c2/flexcop.c
@@ -46,7 +46,7 @@
int b2c2_flexcop_debug;
module_param_named(debug, b2c2_flexcop_debug, int, 0644);
-MODULE_PARM_DESC(debug, "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram (|-able))." DEBSTATUS);
+MODULE_PARM_DESC(debug, "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg (|-able))." DEBSTATUS);
#undef DEBSTATUS
/* global zero for ibi values */
@@ -173,9 +173,20 @@
fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
v210.raw = 0;
- v210.sw_reset_210.reset_blocks = 0xff;
+ v210.sw_reset_210.reset_block_000 = 1;
+ v210.sw_reset_210.reset_block_100 = 1;
+ v210.sw_reset_210.reset_block_200 = 1;
+ v210.sw_reset_210.reset_block_300 = 1;
+ v210.sw_reset_210.reset_block_400 = 1;
+ v210.sw_reset_210.reset_block_500 = 1;
+ v210.sw_reset_210.reset_block_600 = 1;
+ v210.sw_reset_210.reset_block_700 = 1;
v210.sw_reset_210.Block_reset_enable = 0xb2;
+
+ v210.sw_reset_210.Special_controls = 0xc259;
+
fc->write_ibi_reg(fc,sw_reset_210,v210);
+ msleep(1);
/* reset the periphical devices */
@@ -186,6 +197,25 @@
fc->write_ibi_reg(fc,misc_204,v204);
}
+void flexcop_reset_block_300(struct flexcop_device *fc)
+{
+ flexcop_ibi_value v208_save = fc->read_ibi_reg(fc,ctrl_208),
+ v210 = fc->read_ibi_reg(fc,sw_reset_210);
+
+ deb_rdump("208: %08x, 210: %08x\n",v208_save.raw,v210.raw);
+
+ fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
+
+ v210.sw_reset_210.reset_block_300 = 1;
+ v210.sw_reset_210.Block_reset_enable = 0xb2;
+
+ fc->write_ibi_reg(fc,sw_reset_210,v210);
+ msleep(1);
+
+ fc->write_ibi_reg(fc,ctrl_208,v208_save);
+}
+EXPORT_SYMBOL(flexcop_reset_block_300);
+
struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
{
void *bus;