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Subject[PATCH] ASoC: wm_adsp: Dump DSP_SCRATCH1 on DSP shutdown
Date
The DSP_SCRATCH1 register is used by firmwares to hold diagnostic
information. Include this in the shutdown message - it can be
useful for debugging.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
---
sound/soc/codecs/wm_adsp.c | 14 +++++++++++++-
1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index f6642c1..9b7c03c 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -121,6 +121,11 @@
#define ADSP2_WDMA_CONFIG_2 0x31
#define ADSP2_RDMA_CONFIG_1 0x34

+#define ADSP2_SCRATCH0 0x40
+#define ADSP2_SCRATCH1 0x41
+#define ADSP2_SCRATCH2 0x42
+#define ADSP2_SCRATCH3 0x43
+
/*
* ADSP2 Control
*/
@@ -1880,6 +1885,7 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
struct wm_adsp *dsp = &dsps[w->shift];
struct wm_adsp_alg_region *alg_region;
struct wm_coeff_ctl *ctl;
+ unsigned int scratch1 = 0xFFFFFFFF;
int ret;

switch (event) {
@@ -1898,6 +1904,12 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
break;

case SND_SOC_DAPM_PRE_PMD:
+ /* Capture DSP_SCRATCH1, it can be useful for analysis */
+ ret = regmap_read(dsp->regmap, dsp->base + ADSP2_SCRATCH1,
+ &scratch1);
+ if (ret)
+ adsp_err(dsp, "Failed to read SCRATCH1 %d\n", ret);
+
dsp->running = false;

regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
@@ -1935,7 +1947,7 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
kfree(alg_region);
}

- adsp_dbg(dsp, "Shutdown complete\n");
+ adsp_info(dsp, "Shutdown complete (SCRATCH1:0x%x)\n", scratch1);
break;

default:
--
1.7.2.5


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