ASoC: Intel: Skylake: Add DSP muti-core infrastructure

The DSP can have more than one cores. In that case the secondary
core has to be managed by the driver. This patch adds the changes
to driver infrastructure to support multiple core.

A new object skl_dsp_cores is introduced to support multiple
core. Helpers skl_dsp_get_core() skl_dsp_put_core() help to
managed the cores.

Many of the power_up/down and DSP APIs take additional argument
of core_id. The primary core, 0 is always powered up first and
then on demand second core.

Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 62 insertions, 34 deletions

diff --git a/sound/soc/intel/skylake/skl-sst-dsp.h b/sound/soc/intel/skylake/skl-sst-dsp.h
index 22fbe1075cb5..0f8629ef79ac 100644
--- a/sound/soc/intel/skylake/skl-sst-dsp.h
+++ b/sound/soc/intel/skylake/skl-sst-dsp.h
@@ -77,35 +77,53 @@ struct sst_dsp_device;
 #define SKL_ADSPIC_IPC			1
 #define SKL_ADSPIS_IPC			1
 
+/* Core ID of core0 */
+#define SKL_DSP_CORE0_ID		0
+
+/* Mask for a given core index, c = 0.. number of supported cores - 1 */
+#define SKL_DSP_CORE_MASK(c)		BIT(c)
+
+/*
+ * Core 0 mask = SKL_DSP_CORE_MASK(0); Defined separately
+ * since Core0 is primary core and it is used often
+ */
+#define SKL_DSP_CORE0_MASK		BIT(0)
+
+/*
+ * Mask for a given number of cores
+ * nc = number of supported cores
+ */
+#define SKL_DSP_CORES_MASK(nc)	GENMASK((nc - 1), 0)
+
 /* ADSPCS - Audio DSP Control & Status */
-#define SKL_DSP_CORES		1
-#define SKL_DSP_CORE0_MASK	1
-#define SKL_DSP_CORES_MASK	((1 << SKL_DSP_CORES) - 1)
-
-/* Core Reset - asserted high */
-#define SKL_ADSPCS_CRST_SHIFT	0
-#define SKL_ADSPCS_CRST_MASK	(SKL_DSP_CORES_MASK << SKL_ADSPCS_CRST_SHIFT)
-#define SKL_ADSPCS_CRST(x)	((x << SKL_ADSPCS_CRST_SHIFT) & SKL_ADSPCS_CRST_MASK)
-
-/* Core run/stall - when set to '1' core is stalled */
-#define SKL_ADSPCS_CSTALL_SHIFT	8
-#define SKL_ADSPCS_CSTALL_MASK	(SKL_DSP_CORES_MASK <<	\
-					SKL_ADSPCS_CSTALL_SHIFT)
-#define SKL_ADSPCS_CSTALL(x)	((x << SKL_ADSPCS_CSTALL_SHIFT) &	\
-				SKL_ADSPCS_CSTALL_MASK)
-
-/* Set Power Active - when set to '1' turn cores on */
-#define SKL_ADSPCS_SPA_SHIFT	16
-#define SKL_ADSPCS_SPA_MASK	(SKL_DSP_CORES_MASK << SKL_ADSPCS_SPA_SHIFT)
-#define SKL_ADSPCS_SPA(x)	((x << SKL_ADSPCS_SPA_SHIFT) & SKL_ADSPCS_SPA_MASK)
-
-/* Current Power Active - power status of cores, set by hardware */
-#define SKL_ADSPCS_CPA_SHIFT	24
-#define SKL_ADSPCS_CPA_MASK	(SKL_DSP_CORES_MASK << SKL_ADSPCS_CPA_SHIFT)
-#define SKL_ADSPCS_CPA(x)	((x << SKL_ADSPCS_CPA_SHIFT) & SKL_ADSPCS_CPA_MASK)
-
-#define SST_DSP_POWER_D0	0x0  /* full On */
-#define SST_DSP_POWER_D3	0x3  /* Off */
+
+/*
+ * Core Reset - asserted high
+ * CRST Mask for a given core mask pattern, cm
+ */
+#define SKL_ADSPCS_CRST_SHIFT		0
+#define SKL_ADSPCS_CRST_MASK(cm)	((cm) << SKL_ADSPCS_CRST_SHIFT)
+
+/*
+ * Core run/stall - when set to '1' core is stalled
+ * CSTALL Mask for a given core mask pattern, cm
+ */
+#define SKL_ADSPCS_CSTALL_SHIFT		8
+#define SKL_ADSPCS_CSTALL_MASK(cm)	((cm) << SKL_ADSPCS_CSTALL_SHIFT)
+
+/*
+ * Set Power Active - when set to '1' turn cores on
+ * SPA Mask for a given core mask pattern, cm
+ */
+#define SKL_ADSPCS_SPA_SHIFT		16
+#define SKL_ADSPCS_SPA_MASK(cm)		((cm) << SKL_ADSPCS_SPA_SHIFT)
+
+/*
+ * Current Power Active - power status of cores, set by hardware
+ * CPA Mask for a given core mask pattern, cm
+ */
+#define SKL_ADSPCS_CPA_SHIFT		24
+#define SKL_ADSPCS_CPA_MASK(cm)		((cm) << SKL_ADSPCS_CPA_SHIFT)
 
 enum skl_dsp_states {
 	SKL_DSP_RUNNING = 1,
@@ -116,8 +134,8 @@ struct skl_dsp_fw_ops {
 	int (*load_fw)(struct sst_dsp  *ctx);
 	/* FW module parser/loader */
 	int (*parse_fw)(struct sst_dsp *ctx);
-	int (*set_state_D0)(struct sst_dsp *ctx);
-	int (*set_state_D3)(struct sst_dsp *ctx);
+	int (*set_state_D0)(struct sst_dsp *ctx, unsigned int core_id);
+	int (*set_state_D3)(struct sst_dsp *ctx, unsigned int core_id);
 	unsigned int (*get_fw_errcode)(struct sst_dsp *ctx);
 	int (*load_mod)(struct sst_dsp *ctx, u16 mod_id, u8 *mod_name);
 	int (*unload_mod)(struct sst_dsp *ctx, u16 mod_id);
@@ -158,14 +176,26 @@ int skl_cldma_prepare(struct sst_dsp *ctx);
 void skl_dsp_set_state_locked(struct sst_dsp *ctx, int state);
 struct sst_dsp *skl_dsp_ctx_init(struct device *dev,
 		struct sst_dsp_device *sst_dev, int irq);
-int skl_dsp_enable_core(struct sst_dsp *ctx);
-int skl_dsp_disable_core(struct sst_dsp *ctx);
 bool is_skl_dsp_running(struct sst_dsp *ctx);
+
+unsigned int skl_dsp_get_enabled_cores(struct sst_dsp *ctx);
+void skl_dsp_init_core_state(struct sst_dsp *ctx);
+int skl_dsp_enable_core(struct sst_dsp *ctx, unsigned int core_mask);
+int skl_dsp_disable_core(struct sst_dsp *ctx, unsigned int core_mask);
+int skl_dsp_core_power_up(struct sst_dsp *ctx, unsigned int core_mask);
+int skl_dsp_core_power_down(struct sst_dsp *ctx, unsigned int core_mask);
+int skl_dsp_core_unset_reset_state(struct sst_dsp *ctx,
+					unsigned int core_mask);
+int skl_dsp_start_core(struct sst_dsp *ctx, unsigned int core_mask);
+
 irqreturn_t skl_dsp_sst_interrupt(int irq, void *dev_id);
 int skl_dsp_wake(struct sst_dsp *ctx);
 int skl_dsp_sleep(struct sst_dsp *ctx);
 void skl_dsp_free(struct sst_dsp *dsp);
 
+int skl_dsp_get_core(struct sst_dsp *ctx, unsigned int core_id);
+int skl_dsp_put_core(struct sst_dsp *ctx, unsigned int core_id);
+
 int skl_dsp_boot(struct sst_dsp *ctx);
 int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
 		const char *fw_name, struct skl_dsp_loader_ops dsp_ops,
@@ -182,7 +212,5 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, unsigned int offset);
 void skl_freeup_uuid_list(struct skl_sst *ctx);
 
 int skl_dsp_strip_extended_manifest(struct firmware *fw);
-int skl_dsp_start_core(struct sst_dsp *ctx);
-int skl_dsp_core_power_up(struct sst_dsp *ctx);
 
 #endif /*__SKL_SST_DSP_H__*/