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ASoC: Intel: Skylake: Parse vendor tokens to build A-State table 

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>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pradeep Tewani 2017-12-06 16:34:02 +05:30 committed by Mark Brown
parent b2ca3bdd07
commit 437623554e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 76 additions and 2 deletions
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17
include/uapi/sound/snd_sst_tokens.h
View File

@ -221,6 +221,17 @@
* %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
*
@ -308,7 +319,11 @@ 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

44
sound/soc/intel/skylake/skl-topology.c
View File

@ -3037,11 +3037,13 @@ 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) {
@ -3074,6 +3076,46 @@ 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:

17
sound/soc/intel/skylake/skl.h
View File

@ -29,6 +29,8 @@
#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
@ -46,6 +48,20 @@ 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;
@ -77,6 +93,7 @@ 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)