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Commit 0ad7d3a0 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Mark Brown
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ASoC: davinci-mcasp: Fix master capture only mode 



When McASP is used as TX/RX synchronous (TX side generating clocks for RX
side also) and only capture is used we need to configure the number of TX
slots in order McASP to be able to generate the Frame sync.

Fixes: 9273de1940d9e ("ASoC: davinci-mcasp: Add set_tdm_slots() support")
Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1bdd5932

sound/soc/davinci/davinci-mcasp.c

+8 −0
Original line number Diff line number Diff line
@@ -908,6 +908,14 @@ static int mcasp_i2s_hw_param(struct davinci_mcasp *mcasp, int stream, 
		mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, busel | RXORD);

		mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG,

			       FSRMOD(total_slots), FSRMOD(0x1FF));

		/*

		 * If McASP is set to be TX/RX synchronous and the playback is

		 * not running already we need to configure the TX slots in

		 * order to have correct FSX on the bus

		 */

		if (mcasp_is_synchronous(mcasp) && !mcasp->channels)

			mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG,

				       FSXMOD(total_slots), FSXMOD(0x1FF));

	}



	return 0;