lkml.org 
[lkml]   [2022]   [Aug]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 01/12] ASoC: cs42l42: Add SOFT_RESET_REBOOT register
Date
The SOFT_RESET_REBOOT register is needed to recover CS42L42 state after
a Soundwire bus reset.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
---
include/sound/cs42l42.h | 5 +++++
sound/soc/codecs/cs42l42.c | 2 ++
2 files changed, 7 insertions(+)

diff --git a/include/sound/cs42l42.h b/include/sound/cs42l42.h
index a55d522f1772..9cf4baabea52 100644
--- a/include/sound/cs42l42.h
+++ b/include/sound/cs42l42.h
@@ -34,6 +34,7 @@
#define CS42L42_PAGE_24 0x2400
#define CS42L42_PAGE_25 0x2500
#define CS42L42_PAGE_26 0x2600
+#define CS42L42_PAGE_27 0x2700
#define CS42L42_PAGE_28 0x2800
#define CS42L42_PAGE_29 0x2900
#define CS42L42_PAGE_2A 0x2A00
@@ -719,6 +720,10 @@

#define CS42L42_SRC_SDOUT_FS (CS42L42_PAGE_26 + 0x09)

+/* Page 0x27 DMA */
+#define CS42L42_SOFT_RESET_REBOOT (CS42L42_PAGE_27 + 0x01)
+#define CS42L42_SFT_RST_REBOOT_MASK BIT(1)
+
/* Page 0x28 S/PDIF Registers */
#define CS42L42_SPDIF_CTL1 (CS42L42_PAGE_28 + 0x01)
#define CS42L42_SPDIF_CTL2 (CS42L42_PAGE_28 + 0x02)
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 42cdb051e0fb..440d414efe0a 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -294,6 +294,7 @@ static bool cs42l42_readable_register(struct device *dev, unsigned int reg)
case CS42L42_SPDIF_SW_CTL1:
case CS42L42_SRC_SDIN_FS:
case CS42L42_SRC_SDOUT_FS:
+ case CS42L42_SOFT_RESET_REBOOT:
case CS42L42_SPDIF_CTL1:
case CS42L42_SPDIF_CTL2:
case CS42L42_SPDIF_CTL3:
@@ -358,6 +359,7 @@ static bool cs42l42_volatile_register(struct device *dev, unsigned int reg)
case CS42L42_LOAD_DET_DONE:
case CS42L42_DET_STATUS1:
case CS42L42_DET_STATUS2:
+ case CS42L42_SOFT_RESET_REBOOT:
return true;
default:
return false;
--
2.30.2
\
 
 \ /
  Last update: 2022-08-19 14:55    [W:0.179 / U:0.984 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site