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[1/3] Input: cap11xx - Cache hardware ID registers

Message ID 20231001-input-maple-v1-1-ed3716051431@kernel.org
State Accepted
Commit 39bd68d422ba085997fb1f26160d7c686915b3cb
Headers show
Series Input: Small regmap improvements | expand

Commit Message

Mark Brown Sept. 30, 2023, 11:43 p.m. UTC
The cap11xx devices have three hardware identification registers which are
currently marked as volatile, preventing caching of those registers. This
is not ideal since the registers should never change at runtime, we should
be able to cache the value after the first read. Stop marking the registers
as volatile, we don't have register defaults specified in the driver so
this will result in reading from the hardware on first use.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/input/keyboard/cap11xx.c | 3 ---
 1 file changed, 3 deletions(-)
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Patch

diff --git a/drivers/input/keyboard/cap11xx.c b/drivers/input/keyboard/cap11xx.c
index 1b4937dce672..39ed3b9ddc65 100644
--- a/drivers/input/keyboard/cap11xx.c
+++ b/drivers/input/keyboard/cap11xx.c
@@ -160,9 +160,6 @@  static bool cap11xx_volatile_reg(struct device *dev, unsigned int reg)
 	case CAP11XX_REG_SENOR_DELTA(3):
 	case CAP11XX_REG_SENOR_DELTA(4):
 	case CAP11XX_REG_SENOR_DELTA(5):
-	case CAP11XX_REG_PRODUCT_ID:
-	case CAP11XX_REG_MANUFACTURER_ID:
-	case CAP11XX_REG_REVISION:
 		return true;
 	}