github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-23 14:42:08 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mfd: cs42l43: Prepare support for updated bios patch

Browse Source 
Newer bios patch firmware versions now require use of the shadow register
interface, which was previously only required by the full firmware, update
the check accordingly.

Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20241205115822.2371719-1-ckeepax@opensource.cirrus.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Maciej Strozek 2024-12-05 11:58:19 +00:00 committed by Lee Jones
parent b787a44fb1
commit d496ad33e6
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mfd/cs42l43.c
View File

@ -48,6 +48,7 @@
#define CS42L43_MCU_SUPPORTED_REV 0x2105
#define CS42L43_MCU_SHADOW_REGS_REQUIRED_REV 0x2200
#define CS42L43_BIOS_SHADOW_REGS_REQUIRED_REV 0x1002
#define CS42L43_MCU_SUPPORTED_BIOS_REV 0x0001
#define CS42L43_VDDP_DELAY_US 50
@ -773,7 +774,8 @@ static int cs42l43_mcu_update_step(struct cs42l43 *cs42l43)
* Later versions of the firmwware require the driver to access some
* features through a set of shadow registers.
*/
shadow = mcu_rev >= CS42L43_MCU_SHADOW_REGS_REQUIRED_REV;
shadow = (mcu_rev >= CS42L43_MCU_SHADOW_REGS_REQUIRED_REV) ||
(bios_rev >= CS42L43_BIOS_SHADOW_REGS_REQUIRED_REV);
ret = regmap_read(cs42l43->regmap, CS42L43_BOOT_CONTROL, &secure_cfg);
if (ret) {