Commit 3cf508f6 authored Aug 01, 2016 by Bhalchandra Gajare Committed by Gerrit - the friendly Code Review server Aug 02, 2016

mfd: wcd934x: Mark CPE registers as volatile



Currently only read-only registers are marked as volatile. It is
possible that some registers could be read-write and still have
subset of the bits that are updated by the hardware. Add change
to mark such CPE (codec processing engine) register as volatile.

CRs-Fixed: 1049012
Change-Id: I1cedf646d0df1ab5968df4830502649de305c9d1
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>

parent ec9fd7cc

drivers/mfd/wcd934x-regmap.c

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1848,6 +1848,15 @@ static bool wcd934x_is_volatile_register(struct device *dev, unsigned int reg)
	if (reg_tbl && reg_tbl[reg_offset] == WCD934X_READ)		if (reg_tbl && reg_tbl[reg_offset] == WCD934X_READ)
	return true;		return true;

			/*
			* Need to mark volatile for registers that are writable but
			* only few bits are read-only
			*/
			switch (reg) {
			case WCD934X_CPE_SS_SOC_SW_COLLAPSE_CTL:
			return true;
			}

	return false;		return false;
	}		}