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Commit b1c11401 authored by Vidyakumar Athota's avatar Vidyakumar Athota Committed by Gerrit - the friendly Code Review server
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drivers: mfd: set IIR and ANC registers as volatile 



IIR and ANC registers are not cacheable so add them to
volatile register list.

Change-Id: I99e45021ca90138b73aebe1f13a6af0f42c58227
Signed-off-by: default avatarVidyakumar Athota <vathota@codeaurora.org>
parent 37e939f4

drivers/mfd/wcd934x-regmap.c

+14 −0
Original line number Diff line number Diff line
@@ -1848,6 +1848,20 @@ static bool wcd934x_is_volatile_register(struct device *dev, unsigned int reg) 
	if (reg_tbl && reg_tbl[reg_offset] == WCD934X_READ)

		return true;



	/* IIR Coeff registers are not cacheable */

	if ((reg >= WCD934X_CDC_SIDETONE_IIR0_IIR_COEF_B1_CTL) &&

	    (reg <= WCD934X_CDC_SIDETONE_IIR1_IIR_COEF_B2_CTL))

		return true;



	if ((reg >= WCD934X_CDC_ANC0_IIR_COEFF_1_CTL) &&

	    (reg <= WCD934X_CDC_ANC0_FB_GAIN_CTL))

		return true;



	if ((reg >= WCD934X_CDC_ANC1_IIR_COEFF_1_CTL) &&

	    (reg <= WCD934X_CDC_ANC1_FB_GAIN_CTL))

		return true;





	/*

	 * Need to mark volatile for registers that are writable but

	 * only few bits are read-only