As requirements to bring up audio paths are continuous getting tighter and the DSP download to most ADSP devices happens over an external bus it can become an important factor in the path bring up time. As such sometimes it is a reasonable trade off to download the firmware ahead of when it will be required and take a small hit on power consumption for keeping the core powered up.
This "preloading" adds an additional control for each DSP core "DSPx Preload Switch" that when set to true will power up the DSP core and download the firmware currently selected in the "DSPx Firmware" control. Whilst the core is preloaded the current firmware can not be changed and the CODEC will be kept powered up and SYSCLK held on. Although future improvements may allow the SYSCLK to be powered down as well because the hardware only requires SYSCLK whilst the download is actually taking place, but this is not covered in this series.
Signed-off-by: Charles Keepax ckeepax@opensource.wolfsonmicro.com --- sound/soc/codecs/arizona.h | 1 + sound/soc/codecs/cs47l24.c | 3 +++ sound/soc/codecs/wm5102.c | 2 ++ sound/soc/codecs/wm5110.c | 5 +++++ sound/soc/codecs/wm_adsp.c | 43 +++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/wm_adsp.h | 11 +++++++++++ 6 files changed, 65 insertions(+)
diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h index 9d0997b..8ea3657 100644 --- a/sound/soc/codecs/arizona.h +++ b/sound/soc/codecs/arizona.h @@ -191,6 +191,7 @@ extern unsigned int arizona_mixer_values[ARIZONA_NUM_MIXER_INPUTS]; #define ARIZONA_DSP_ROUTES(name) \ { name, NULL, name " Preloader"}, \ { name " Preloader", NULL, "SYSCLK" }, \ + { name " Preload", NULL, name " Preloader"}, \ { name, NULL, name " Aux 1" }, \ { name, NULL, name " Aux 2" }, \ { name, NULL, name " Aux 3" }, \ diff --git a/sound/soc/codecs/cs47l24.c b/sound/soc/codecs/cs47l24.c index 7df6a67..f321ea8 100644 --- a/sound/soc/codecs/cs47l24.c +++ b/sound/soc/codecs/cs47l24.c @@ -173,6 +173,9 @@ SOC_ENUM("ISRC2 FSH", arizona_isrc_fsh[1]), SOC_ENUM("ISRC3 FSH", arizona_isrc_fsh[2]), SOC_ENUM("ASRC RATE 1", arizona_asrc_rate1),
+WM_ADSP2_PRELOAD_SWITCH("DSP2", 2), +WM_ADSP2_PRELOAD_SWITCH("DSP3", 3), + ARIZONA_MIXER_CONTROLS("DSP2L", ARIZONA_DSP2LMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP2R", ARIZONA_DSP2RMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP3L", ARIZONA_DSP3LMIX_INPUT_1_SOURCE), diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c index bb3de5b..07b6058 100644 --- a/sound/soc/codecs/wm5102.c +++ b/sound/soc/codecs/wm5102.c @@ -855,6 +855,8 @@ ARIZONA_LHPF_CONTROL("LHPF2 Coefficients", ARIZONA_HPLPF2_2), ARIZONA_LHPF_CONTROL("LHPF3 Coefficients", ARIZONA_HPLPF3_2), ARIZONA_LHPF_CONTROL("LHPF4 Coefficients", ARIZONA_HPLPF4_2),
+WM_ADSP2_PRELOAD_SWITCH("DSP1", 1), + ARIZONA_MIXER_CONTROLS("DSP1L", ARIZONA_DSP1LMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP1R", ARIZONA_DSP1RMIX_INPUT_1_SOURCE),
diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index 407dc4a..0fee2d9 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -778,6 +778,11 @@ SOC_ENUM("ISRC2 FSH", arizona_isrc_fsh[1]), SOC_ENUM("ISRC3 FSH", arizona_isrc_fsh[2]), SOC_ENUM("ASRC RATE 1", arizona_asrc_rate1),
+WM_ADSP2_PRELOAD_SWITCH("DSP1", 1), +WM_ADSP2_PRELOAD_SWITCH("DSP2", 2), +WM_ADSP2_PRELOAD_SWITCH("DSP3", 3), +WM_ADSP2_PRELOAD_SWITCH("DSP4", 4), + ARIZONA_MIXER_CONTROLS("DSP1L", ARIZONA_DSP1LMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP1R", ARIZONA_DSP1RMIX_INPUT_1_SOURCE), ARIZONA_MIXER_CONTROLS("DSP2L", ARIZONA_DSP2LMIX_INPUT_1_SOURCE), diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 41c179d..e942b07 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -2316,6 +2316,43 @@ static void wm_adsp2_set_dspclk(struct wm_adsp *dsp, unsigned int freq) adsp_err(dsp, "Failed to set clock rate: %d\n", ret); }
+int wm_adsp2_preloader_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); + struct wm_adsp *dsp = snd_soc_codec_get_drvdata(codec); + + ucontrol->value.integer.value[0] = dsp->preloaded; + + return 0; +} +EXPORT_SYMBOL_GPL(wm_adsp2_preloader_get); + +int wm_adsp2_preloader_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); + struct wm_adsp *dsp = snd_soc_codec_get_drvdata(codec); + struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); + struct soc_mixer_control *mc = + (struct soc_mixer_control *)kcontrol->private_value; + char preload[32]; + + snprintf(preload, ARRAY_SIZE(preload), "DSP%d Preload", mc->shift); + + dsp->preloaded = ucontrol->value.integer.value[0]; + + if (ucontrol->value.integer.value[0]) + snd_soc_dapm_force_enable_pin(dapm, preload); + else + snd_soc_dapm_disable_pin(dapm, preload); + + snd_soc_dapm_sync(dapm); + + return 0; +} +EXPORT_SYMBOL_GPL(wm_adsp2_preloader_put); + int wm_adsp2_early_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event, unsigned int freq) @@ -2440,6 +2477,12 @@ EXPORT_SYMBOL_GPL(wm_adsp2_event);
int wm_adsp2_codec_probe(struct wm_adsp *dsp, struct snd_soc_codec *codec) { + struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); + char preload[32]; + + snprintf(preload, ARRAY_SIZE(preload), "DSP%d Preload", dsp->num); + snd_soc_dapm_disable_pin(dapm, preload); + wm_adsp2_init_debugfs(dsp, codec);
return snd_soc_add_codec_controls(codec, diff --git a/sound/soc/codecs/wm_adsp.h b/sound/soc/codecs/wm_adsp.h index 362dd7c..74f117b 100644 --- a/sound/soc/codecs/wm_adsp.h +++ b/sound/soc/codecs/wm_adsp.h @@ -62,6 +62,7 @@ struct wm_adsp { int fw; int fw_ver;
+ bool preloaded; bool booted; bool running;
@@ -86,7 +87,12 @@ struct wm_adsp { SND_SOC_DAPM_PGA_E(wname, SND_SOC_NOPM, num, 0, NULL, 0, \ wm_adsp1_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD)
+#define WM_ADSP2_PRELOAD_SWITCH(wname, num) \ + SOC_SINGLE_EXT(wname " Preload Switch", SND_SOC_NOPM, num, 1, 0, \ + wm_adsp2_preloader_get, wm_adsp2_preloader_put) + #define WM_ADSP2(wname, num, event_fn) \ + SND_SOC_DAPM_SPK(wname " Preload", NULL), \ { .id = snd_soc_dapm_supply, .name = wname " Preloader", \ .reg = SND_SOC_NOPM, .shift = num, .event = event_fn, \ .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD, \ @@ -110,6 +116,11 @@ int wm_adsp2_early_event(struct snd_soc_dapm_widget *w, int wm_adsp2_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event);
+int wm_adsp2_preloader_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); +int wm_adsp2_preloader_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); + extern int wm_adsp_compr_open(struct wm_adsp *dsp, struct snd_compr_stream *stream); extern int wm_adsp_compr_free(struct snd_compr_stream *stream);