Commit d496ad33 authored by Maciej Strozek's avatar Maciej Strozek Committed by Lee Jones
Browse files

mfd: cs42l43: Prepare support for updated bios patch 



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: default avatarMaciej Strozek <mstrozek@opensource.cirrus.com>
Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20241205115822.2371719-1-ckeepax@opensource.cirrus.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent b787a44f

drivers/mfd/cs42l43.c

+3 −1
Original line number Diff line number Diff line
@@ -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) {