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authorMauro Carvalho Chehab <m.chehab@samsung.com>2014-02-27 08:48:44 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-03-04 14:40:54 -0300
commit8afff9a23f8506c3439a7a0d7b21e975aed96ab4 (patch)
tree205dad406a91fce7460c6df5b2421b79d080b237 /drivers/media
parentd7a5478a8a3b45d39823e242bdd05e430b9c9b26 (diff)
downloadlinux-8afff9a23f8506c3439a7a0d7b21e975aed96ab4.tar.bz2
[media] drx-j: be sure to do a full software reset
Mimic what windows driver does here: it writes 0x07 to SIO_CC_SOFT_RST__A, instead of just 0x03. Acked-by: Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/dvb-frontends/drx39xyj/drxj.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/media/dvb-frontends/drx39xyj/drxj.c b/drivers/media/dvb-frontends/drx39xyj/drxj.c
index 97a30057ff09..ed68c52f4e96 100644
--- a/drivers/media/dvb-frontends/drx39xyj/drxj.c
+++ b/drivers/media/dvb-frontends/drx39xyj/drxj.c
@@ -19876,8 +19876,15 @@ int drxj_open(struct drx_demod_instance *demod)
goto rw_error;
}
- /* Soft reset of sys- and osc-clockdomain */
- rc = drxj_dap_write_reg16(dev_addr, SIO_CC_SOFT_RST__A, (SIO_CC_SOFT_RST_SYS__M | SIO_CC_SOFT_RST_OSC__M), 0);
+ /*
+ * Soft reset of sys- and osc-clockdomain
+ *
+ * HACK: On windows, it writes a 0x07 here, instead of just 0x03.
+ * As we didn't load the firmware here yet, we should do the same.
+ * Btw, this is coherent with DRX-K, where we send reset codes
+ * for modulation (OFTM, in DRX-k), SYS and OSC clock domains.
+ */
+ rc = drxj_dap_write_reg16(dev_addr, SIO_CC_SOFT_RST__A, (0x04 | SIO_CC_SOFT_RST_SYS__M | SIO_CC_SOFT_RST_OSC__M), 0);
if (rc != 0) {
pr_err("error %d\n", rc);
goto rw_error;