kernel/linux.git/drivers/mfd/cs42l43.c, branch v6.6.148

mfd: cs42l43: Sanity check firmware size

2026-07-24T14:03:13+00:00

[ Upstream commit b6ef1a74b3ec254f87a6a3c554fe8f8083ebd37c ] Currently the code checks if a firmware was received, however it does not verify that the firmware size is larger than the firmware header. As the firmware pointer is dereferenced as a pointer to the header structure this could lead to an out of bounds memory access. Add the missing check. Fixes: ace6d1448138 ("mfd: cs42l43: Add support for cs42l43 core driver") Signed-off-by: Charles Keepax Link: https://patch.msgid.link/20260508134804.1787461-1-ckeepax@opensource.cirrus.com Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

mfd: cs42l43: Fix wrong GPIO_FN_SEL and SPI_CLK_CONFIG1 defaults

2024-03-26T22:19:55+00:00

[ Upstream commit 78334c343bef528b911da83a6b041d15a1a72efb ] Two regs have wrong values in existing fields, change them to match the datasheet. Fixes: ace6d1448138 ("mfd: cs42l43: Add support for cs42l43 core driver") Signed-off-by: Maciej Strozek Reviewed-by: Charles Keepax Link: https://lore.kernel.org/r/20240301101547.2136948-1-mstrozek@opensource.cirrus.com Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

mfd: cs42l43: Fix wrong register defaults

2024-03-26T22:19:54+00:00

[ Upstream commit c9e1e505cde1a8ddd0968b4d54ec2ea1937dfe00 ] A few regs have unnecessary values in defaults, change them to match the datasheet Fixes: ace6d1448138 ("mfd: cs42l43: Add support for cs42l43 core driver") Signed-off-by: Maciej Strozek Link: https://lore.kernel.org/r/20240229155616.118457-1-mstrozek@opensource.cirrus.com Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

mfd: cs42l43: Use correct macro for new-style PM runtime ops

2023-09-23T18:10:23+00:00

The code was accidentally mixing new and old style macros, update the macros used to remove an unused function warning whilst building with no PM enabled in the config. Fixes: ace6d1448138 ("mfd: cs42l43: Add support for cs42l43 core driver") Signed-off-by: Charles Keepax Link: https://lore.kernel.org/all/20230822114914.340359-1-ckeepax@opensource.cirrus.com/ Reviewed-by: Nathan Chancellor Tested-by: Geert Uytterhoeven Acked-by: Lee Jones Signed-off-by: Uwe Kleine-König Signed-off-by: Linus Torvalds

mfd: cs42l43: Add support for cs42l43 core driver

2023-08-17T11:06:11+00:00

The CS42L43 is an audio CODEC with integrated MIPI SoundWire interface (Version 1.2.1 compliant), I2C, SPI, and I2S/TDM interfaces designed for portable applications. It provides a high dynamic range, stereo DAC for headphone output, two integrated Class D amplifiers for loudspeakers, and two ADCs for wired headset microphone input or stereo line input. PDM inputs are provided for digital microphones. The MFD component registers and initialises the device and provides PM/system power management. Signed-off-by: Charles Keepax Link: https://lore.kernel.org/r/20230804104602.395892-4-ckeepax@opensource.cirrus.com Signed-off-by: Lee Jones