ASoC: wm_adsp: Expose the DSP boot work actions as wm_adsp_power_up()

To support self-booting DSPs that are considered always running, the work
that is usually invoked as part of a DAPM sequence needs to be triggered
by a client of wm_adsp as part of it's startup sequence.

These actions load firmware files that might create ALSA controls and
apply configuration to the device.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230320112245.115720-6-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: simontrimmer

sound/soc/codecs/wm_adsp.c

@@ -998,11 +998,8 @@ int wm_adsp2_preloader_put(struct snd_kcontrol *kcontrol,
 }
 EXPORT_SYMBOL_GPL(wm_adsp2_preloader_put);
 
-static void wm_adsp_boot_work(struct work_struct *work)
+int wm_adsp_power_up(struct wm_adsp *dsp)
 {
-	struct wm_adsp *dsp = container_of(work,
-					   struct wm_adsp,
-					   boot_work);
 	int ret = 0;
 	char *wmfw_filename = NULL;
 	const struct firmware *wmfw_firmware = NULL;
@@ -1013,16 +1010,28 @@ static void wm_adsp_boot_work(struct work_struct *work)
 					     &wmfw_firmware, &wmfw_filename,
 					     &coeff_firmware, &coeff_filename);
 	if (ret)
-		return;
+		return ret;
 
-	cs_dsp_power_up(&dsp->cs_dsp,
-			wmfw_firmware, wmfw_filename,
-			coeff_firmware, coeff_filename,
-			wm_adsp_fw_text[dsp->fw]);
+	ret = cs_dsp_power_up(&dsp->cs_dsp,
+			      wmfw_firmware, wmfw_filename,
+			      coeff_firmware, coeff_filename,
+			      wm_adsp_fw_text[dsp->fw]);
 
 	wm_adsp_release_firmware_files(dsp,
 				       wmfw_firmware, wmfw_filename,
 				       coeff_firmware, coeff_filename);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(wm_adsp_power_up);
+
+static void wm_adsp_boot_work(struct work_struct *work)
+{
+	struct wm_adsp *dsp = container_of(work,
+					   struct wm_adsp,
+					   boot_work);
+
+	wm_adsp_power_up(dsp);
 }
 
 int wm_adsp_early_event(struct snd_soc_dapm_widget *w,

sound/soc/codecs/wm_adsp.h

@@ -91,6 +91,8 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w,
 int wm_adsp_early_event(struct snd_soc_dapm_widget *w,
 			struct snd_kcontrol *kcontrol, int event);
 
+int wm_adsp_power_up(struct wm_adsp *dsp);
+
 irqreturn_t wm_adsp2_bus_error(int irq, void *data);
 irqreturn_t wm_halo_bus_error(int irq, void *data);
 irqreturn_t wm_halo_wdt_expire(int irq, void *data);