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ASoC: Intel: Skylake: Strip T and L from TLV IPCs

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cAVS modules do not require Type and Length header within the
set_module_params IPC. This is also true for Vendor modules. The
userspace (like tinymix) always appends this header to TLV controls
which are used for set_module_params. Simply assume this header is
always present in the payload and omit it from the IPC.

Signed-off-by: Kamil Lulko <kamilx.lulko@intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kamil Lulko 2019-06-13 21:04:36 +02:00 committed by Mark Brown
parent 02923faa6b
commit a8cd7066f0
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GPG Key ID: 24D68B725D5487D0
1 changed files with 9 additions and 13 deletions
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22
sound/soc/intel/skylake/skl-topology.c
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@ -1492,22 +1492,18 @@ static int skl_tplg_tlv_control_set(struct snd_kcontrol *kcontrol,
struct skl *skl = get_skl_ctx(w->dapm->dev);
if (ac->params) {
/*
* Widget data is expected to be stripped of T and L
*/
size -= 2 * sizeof(unsigned int);
data += 2;
if (size > ac->max)
return -EINVAL;
ac->size = size;
/*
* if the param_is is of type Vendor, firmware expects actual
* parameter id and size from the control.
*/
if (ac->param_id == SKL_PARAM_VENDOR_ID) {
if (copy_from_user(ac->params, data, size))
return -EFAULT;
} else {
if (copy_from_user(ac->params,
data + 2, size))
return -EFAULT;
}
if (copy_from_user(ac->params, data, size))
return -EFAULT;
if (w->power)
return skl_set_module_params(skl->skl_sst,