Commit f6712176 authored Jun 29, 2015 by Bhalchandra Gajare Committed by Gerrit - the friendly Code Review server Jun 30, 2015

mfd: wcd9335-regmap: Mark shared registers as volatile

Some of the codec registers can be shared with other processors and
hence can get updated without the knowledge of the driver. In such cases
the regmap cache is not in sync with the hardware register setting. Mark
these registers as volatile so that reads and writes bypass the cache.

Change-Id: I3c8e8e31e36f9f9a1aba0193d696d019437dfed2
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>

parent ff05e2c4

drivers/mfd/wcd9335-regmap.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1369,6 +1369,10 @@ static bool wcd9335_is_volatile_register(struct device *dev, unsigned int reg)
		case WCD9335_CPE_SS_SS_ERROR_INT_STATUS:
		case WCD9335_CPE_SS_STATUS:
		case WCD9335_CPE_SS_BACKUP_INT:
		case WCD9335_CPE_SS_CFG:
		case WCD9335_SOC_MAD_MAIN_CTL_1:
		case WCD9335_SOC_MAD_AUDIO_CTL_3:
		case WCD9335_SOC_MAD_AUDIO_CTL_4:
		return true;
		default:
		return false;