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Commit 2d30b575 authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: wm_adsp: Ensure ADSP2 DMAs are quiesced when DSP is halted 



Maximise robustness for the widest range of firmwares by ensuring the DSP
is in a consistent state when halted.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent a4cdbec7

sound/soc/codecs/wm_adsp.c

+11 −3
Original line number Diff line number Diff line
@@ -103,9 +103,12 @@ 
#define ADSP1_START_SHIFT                      0  /* DSP1_START */

#define ADSP1_START_WIDTH                      1  /* DSP1_START */



#define ADSP2_CONTROL  0

#define ADSP2_CLOCKING 1

#define ADSP2_STATUS1  4

#define ADSP2_CONTROL        0x0

#define ADSP2_CLOCKING       0x1

#define ADSP2_STATUS1        0x4

#define ADSP2_WDMA_CONFIG_1 0x30

#define ADSP2_WDMA_CONFIG_2 0x31

#define ADSP2_RDMA_CONFIG_1 0x34



/*

 * ADSP2 Control
@@ -642,6 +645,11 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w, 
				   ADSP2_SYS_ENA | ADSP2_CORE_ENA |

				   ADSP2_START, 0);



		/* Make sure DMAs are quiesced */

		regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_1, 0);

		regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_2, 0);

		regmap_write(dsp->regmap, dsp->base + ADSP2_RDMA_CONFIG_1, 0);



		if (dsp->dvfs) {

			ret = regulator_set_voltage(dsp->dvfs, 1200000,

						    1800000);