From: Pradeep Tewani pradeep.d.tewani@intel.com
A-State table is a power management table which allows the driver to configure the DSP clock source corresponding to various load thresholds. The table contains upto 3 A-State entries. The patch adds and parses the corresponding A-State tokens to build the table.
Signed-off-by: Pradeep Tewani pradeep.d.tewani@intel.com Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com --- include/uapi/sound/snd_sst_tokens.h | 17 ++++++++++++- sound/soc/intel/skylake/skl-topology.c | 44 +++++++++++++++++++++++++++++++++- sound/soc/intel/skylake/skl.h | 17 +++++++++++++ 3 files changed, 76 insertions(+), 2 deletions(-)
diff --git a/include/uapi/sound/snd_sst_tokens.h b/include/uapi/sound/snd_sst_tokens.h index 326054a72bc7..8ba0112e5336 100644 --- a/include/uapi/sound/snd_sst_tokens.h +++ b/include/uapi/sound/snd_sst_tokens.h @@ -222,6 +222,17 @@ * %SKL_TKN_MM_U32_NUM_IN_FMT: Number of input formats * %SKL_TKN_MM_U32_NUM_OUT_FMT: Number of output formats * + * %SKL_TKN_U32_ASTATE_IDX: Table Index for the A-State entry to be filled + * with kcps and clock source + * + * %SKL_TKN_U32_ASTATE_COUNT: Number of valid entries in A-State table + * + * %SKL_TKN_U32_ASTATE_KCPS: Specifies the core load threshold (in kilo + * cycles per second) below which DSP is clocked + * from source specified by clock source. + * + * %SKL_TKN_U32_ASTATE_CLK_SRC: Clock source for A-State entry + * * module_id and loadable flags dont have tokens as these values will be * read from the DSP FW manifest * @@ -309,7 +320,11 @@ enum SKL_TKNS { SKL_TKN_MM_U32_NUM_IN_FMT, SKL_TKN_MM_U32_NUM_OUT_FMT,
- SKL_TKN_MAX = SKL_TKN_MM_U32_NUM_OUT_FMT, + SKL_TKN_U32_ASTATE_IDX, + SKL_TKN_U32_ASTATE_COUNT, + SKL_TKN_U32_ASTATE_KCPS, + SKL_TKN_U32_ASTATE_CLK_SRC, + SKL_TKN_MAX = SKL_TKN_U32_ASTATE_CLK_SRC, };
#endif diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c index a072bcf209d2..6a5f8462c380 100644 --- a/sound/soc/intel/skylake/skl-topology.c +++ b/sound/soc/intel/skylake/skl-topology.c @@ -3056,11 +3056,13 @@ static int skl_tplg_get_int_tkn(struct device *dev, struct snd_soc_tplg_vendor_value_elem *tkn_elem, struct skl *skl) { - int tkn_count = 0, ret; + int tkn_count = 0, ret, size; static int mod_idx, res_val_idx, intf_val_idx, dir, pin_idx; struct skl_module_res *res = NULL; struct skl_module_iface *fmt = NULL; struct skl_module *mod = NULL; + static struct skl_astate_param *astate_table; + static int astate_cfg_idx, count; int i;
if (skl->modules) { @@ -3093,6 +3095,46 @@ static int skl_tplg_get_int_tkn(struct device *dev, mod_idx = tkn_elem->value; break;
+ case SKL_TKN_U32_ASTATE_COUNT: + if (astate_table != NULL) { + dev_err(dev, "More than one entry for A-State count"); + return -EINVAL; + } + + if (tkn_elem->value > SKL_MAX_ASTATE_CFG) { + dev_err(dev, "Invalid A-State count %d\n", + tkn_elem->value); + return -EINVAL; + } + + size = tkn_elem->value * sizeof(struct skl_astate_param) + + sizeof(count); + skl->cfg.astate_cfg = devm_kzalloc(dev, size, GFP_KERNEL); + if (!skl->cfg.astate_cfg) + return -ENOMEM; + + astate_table = skl->cfg.astate_cfg->astate_table; + count = skl->cfg.astate_cfg->count = tkn_elem->value; + break; + + case SKL_TKN_U32_ASTATE_IDX: + if (tkn_elem->value >= count) { + dev_err(dev, "Invalid A-State index %d\n", + tkn_elem->value); + return -EINVAL; + } + + astate_cfg_idx = tkn_elem->value; + break; + + case SKL_TKN_U32_ASTATE_KCPS: + astate_table[astate_cfg_idx].kcps = tkn_elem->value; + break; + + case SKL_TKN_U32_ASTATE_CLK_SRC: + astate_table[astate_cfg_idx].clk_src = tkn_elem->value; + break; + case SKL_TKN_U8_IN_PIN_TYPE: case SKL_TKN_U8_OUT_PIN_TYPE: case SKL_TKN_U8_IN_QUEUE_COUNT: diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h index e00cde8200dd..fa46a5782929 100644 --- a/sound/soc/intel/skylake/skl.h +++ b/sound/soc/intel/skylake/skl.h @@ -28,6 +28,8 @@
#define SKL_SUSPEND_DELAY 2000
+#define SKL_MAX_ASTATE_CFG 3 + #define AZX_PCIREG_PGCTL 0x44 #define AZX_PGCTL_LSRMD_MASK (1 << 4) #define AZX_PCIREG_CGCTL 0x48 @@ -45,6 +47,20 @@ struct skl_dsp_resource {
struct skl_debug;
+struct skl_astate_param { + u32 kcps; + u32 clk_src; +}; + +struct skl_astate_config { + u32 count; + struct skl_astate_param astate_table[0]; +}; + +struct skl_fw_config { + struct skl_astate_config *astate_cfg; +}; + struct skl { struct hdac_ext_bus ebus; struct pci_dev *pci; @@ -75,6 +91,7 @@ struct skl { u8 nr_modules; struct skl_module **modules; bool use_tplg_pcm; + struct skl_fw_config cfg; };
#define skl_to_ebus(s) (&(s)->ebus)