firmware: cs_dsp: Introduce no_core_startstop for self-booting DSPs

There are devices containing Halo Core DSPs that self-boot, cs_dsp is
used to manage the running firmware but the host does not have direct
control over starting and stopping the DSP and so cs_dsp should consider
the DSP to be always running.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230320112245.115720-2-rf@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/firmware/cirrus/cs_dsp.c

@@ -301,6 +301,7 @@ struct cs_dsp_ops {
 static const struct cs_dsp_ops cs_dsp_adsp1_ops;
 static const struct cs_dsp_ops cs_dsp_adsp2_ops[];
 static const struct cs_dsp_ops cs_dsp_halo_ops;
+static const struct cs_dsp_ops cs_dsp_halo_ao_ops;
 
 struct cs_dsp_buf {
 	struct list_head list;
@@ -2821,6 +2822,9 @@ EXPORT_SYMBOL_NS_GPL(cs_dsp_adsp2_init, FW_CS_DSP);
  */
 int cs_dsp_halo_init(struct cs_dsp *dsp)
 {
+	if (dsp->no_core_startstop)
+		dsp->ops = &cs_dsp_halo_ao_ops;
+	else
 		dsp->ops = &cs_dsp_halo_ops;
 
 	return cs_dsp_common_init(dsp);
@@ -3187,6 +3191,14 @@ static const struct cs_dsp_ops cs_dsp_halo_ops = {
 	.stop_core = cs_dsp_halo_stop_core,
 };
 
+static const struct cs_dsp_ops cs_dsp_halo_ao_ops = {
+	.parse_sizes = cs_dsp_adsp2_parse_sizes,
+	.validate_version = cs_dsp_halo_validate_version,
+	.setup_algs = cs_dsp_halo_setup_algs,
+	.region_to_reg = cs_dsp_halo_region_to_reg,
+	.show_fw_status = cs_dsp_halo_show_fw_status,
+};
+
 /**
  * cs_dsp_chunk_write() - Format data to a DSP memory chunk
  * @ch: Pointer to the chunk structure

include/linux/firmware/cirrus/cs_dsp.h

@@ -156,6 +156,7 @@ struct cs_dsp {
 	unsigned int sysclk_reg;
 	unsigned int sysclk_mask;
 	unsigned int sysclk_shift;
+	bool no_core_startstop;
 
 	struct list_head alg_regions;