Adding Vinod to help review as well..
> Commit dc31e741db49 ("ASoC: topology: ABI - Add the types for BE
> DAI") introduced sound topology files version 5. Initially, this
> change made the topology code incompatible with v4 topology files.
> Backwards compatibility with v4 configuration files was
> subsequently added with commit 288b8da7e992 ("ASoC: topology:
> Support topology file of ABI v4").
>
> Unfortunately, backwards compatibility was never fully implemented.
>
> First, the manifest size in (Skylake) v4 configuration files is set
> to 0, which causes manifest_new_ver() to bail out with error messages
> similar to the following.
>
> snd_soc_skl 0000:00:1f.3: ASoC: invalid manifest size
> snd_soc_skl 0000:00:1f.3: tplg component load failed-22
> snd_soc_skl 0000:00:1f.3: Failed to init topology!
> snd_soc_skl 0000:00:1f.3: ASoC: failed to probe component -22
> skl_n88l25_m98357a skl_n88l25_m98357a: ASoC: failed to instantiate card -22
> skl_n88l25_m98357a: probe of skl_n88l25_m98357a failed with error -22
>
> After this problem is fixed, the following error message is seen instead.
>
> snd_soc_skl 0000:00:1f.3: ASoC: old version of manifest
> snd_soc_skl 0000:00:1f.3: Invalid descriptor token 1093938482
> snd_soc_skl 0000:00:1f.3: ASoC: failed to load widget media0_in cpr 0
> snd_soc_skl 0000:00:1f.3: tPlg component load failed-22
>
> This message is seen because backwards compatibility for loading widgets
> was never implemented.
>
> The lack of audio support when running the upstream kernel on recent
> Chromebooks has been reported in various forums, and can be traced back
> to this problem. Attempts to fix the problem, usually by providing v5
> configuration files, were only partially successful.
>
> Let's implement backward compatibility properly to solve the problem
> for good.
>
> Signed-off-by: Guenter Roeck <gro...@chromium.org>
> ---
> Tested on Caroline (Samsung Chromebook Pro) and Chell (HP Chromebook 13
> G1) running v4.17-rc6 plus this patch, with original (v4) configuration
> files. Also tested on several other Chromebooks with this patch on top
> of chromeos-4.14.
>
> v2:
> - Move on from RFC/RFT to real patch
> - Move v4 structure definitions into header file
> - Add support for copying private capabilities
> - Declare skl_dfw_v4_module_caps as __packed
> - Drop duplicate assignment of mconfig->pipe->state
>
> sound/soc/intel/skylake/skl-topology.c | 169 +++++++++++++++++++
> sound/soc/intel/skylake/skl-tplg-interface.h | 74 ++++++++
> sound/soc/soc-topology.c | 7 +-
> 3 files changed, 248 insertions(+), 2 deletions(-)
>
> diff --git a/sound/soc/intel/skylake/skl-topology.c
> b/sound/soc/intel/skylake/skl-topology.c
> index 3b1dca419883..9e4c2cb88dea 100644
> --- a/sound/soc/intel/skylake/skl-topology.c
> +++ b/sound/soc/intel/skylake/skl-topology.c
> @@ -19,6 +19,7 @@
> #include <linux/slab.h>
> #include <linux/types.h>
> #include <linux/firmware.h>
> +#include <linux/uuid.h>
> #include <sound/soc.h>
> #include <sound/soc-topology.h>
> #include <uapi/sound/snd_sst_tokens.h>
> @@ -2724,6 +2725,167 @@ static int skl_tplg_get_desc_blocks(struct device
> *dev,
> return -EINVAL;
> }
>
> +/* Functions to parse private data from configuration file format v4 */
> +
> +/*
> + * Add pipeline from topology binary into driver pipeline list
> + *
> + * If already added we return that instance
> + * Otherwise we create a new instance and add into driver list
> + */
> +static int skl_tplg_add_pipe_v4(struct device *dev,
> + struct skl_module_cfg *mconfig, struct skl *skl,
> + struct skl_dfw_v4_pipe *dfw_pipe)
> +{
> + struct skl_pipeline *ppl;
> + struct skl_pipe *pipe;
> + struct skl_pipe_params *params;
> +
> + list_for_each_entry(ppl, &skl->ppl_list, node) {
> + if (ppl->pipe->ppl_id == dfw_pipe->pipe_id) {
> + mconfig->pipe = ppl->pipe;
> + return 0;
> + }
> + }
> +
> + ppl = devm_kzalloc(dev, sizeof(*ppl), GFP_KERNEL);
> + if (!ppl)
> + return -ENOMEM;
> +
> + pipe = devm_kzalloc(dev, sizeof(*pipe), GFP_KERNEL);
> + if (!pipe)
> + return -ENOMEM;
> +
> + params = devm_kzalloc(dev, sizeof(*params), GFP_KERNEL);
> + if (!params)
> + return -ENOMEM;
> +
> + pipe->ppl_id = dfw_pipe->pipe_id;
> + pipe->memory_pages = dfw_pipe->memory_pages;
> + pipe->pipe_priority = dfw_pipe->pipe_priority;
> + pipe->conn_type = dfw_pipe->conn_type;
> + pipe->state = SKL_PIPE_INVALID;
> + pipe->p_params = params;
> + INIT_LIST_HEAD(&pipe->w_list);
> +
> + ppl->pipe = pipe;
> + list_add(&ppl->node, &skl->ppl_list);
> +
> + mconfig->pipe = pipe;
> +
> + return 0;
> +}
> +
> +static void skl_fill_module_pin_info_v4(struct skl_dfw_v4_module_pin
> *dfw_pin,
> + struct skl_module_pin *m_pin,
> + bool is_dynamic, int max_pin)
> +{
> + int i;
> +
> + for (i = 0; i < max_pin; i++) {
> + m_pin[i].id.module_id = dfw_pin[i].module_id;
> + m_pin[i].id.instance_id = dfw_pin[i].instance_id;
> + m_pin[i].in_use = false;
> + m_pin[i].is_dynamic = is_dynamic;
> + m_pin[i].pin_state = SKL_PIN_UNBIND;
> + }
> +}
> +
> +static void skl_tplg_fill_fmt_v4(struct skl_module_pin_fmt *dst_fmt,
> + struct skl_dfw_v4_module_fmt *src_fmt,
> + int pins)
> +{
> + int i;
> +
> + for (i = 0; i < pins; i++) {
> + dst_fmt[i].fmt.channels = src_fmt[i].channels;
> + dst_fmt[i].fmt.s_freq = src_fmt[i].freq;
> + dst_fmt[i].fmt.bit_depth = src_fmt[i].bit_depth;
> + dst_fmt[i].fmt.valid_bit_depth = src_fmt[i].valid_bit_depth;
> + dst_fmt[i].fmt.ch_cfg = src_fmt[i].ch_cfg;
> + dst_fmt[i].fmt.ch_map = src_fmt[i].ch_map;
> + dst_fmt[i].fmt.interleaving_style =
> + src_fmt[i].interleaving_style;
> + dst_fmt[i].fmt.sample_type = src_fmt[i].sample_type;
> + }
> +}
> +
> +static int skl_tplg_get_pvt_data_v4(struct snd_soc_tplg_dapm_widget *tplg_w,
> + struct skl *skl, struct device *dev,
> + struct skl_module_cfg *mconfig)
> +{
> + struct skl_dfw_v4_module *dfw =
> + (struct skl_dfw_v4_module *)tplg_w->priv.data;
> + int ret;
> +
> + dev_dbg(dev, "Parsing Skylake v4 widget topology data\n");
> +
> + ret = guid_parse(dfw->uuid, (guid_t *)mconfig->guid);
> + if (ret)
> + return ret;
> + mconfig->id.module_id = -1;
> + mconfig->id.instance_id = dfw->instance_id;
> + mconfig->module->resources[0].cps = dfw->max_mcps;
> + mconfig->module->resources[0].ibs = dfw->ibs;
> + mconfig->module->resources[0].obs = dfw->obs;
> + mconfig->core_id = dfw->core_id;
> + mconfig->module->max_input_pins = dfw->max_in_queue;
> + mconfig->module->max_output_pins = dfw->max_out_queue;
> + mconfig->module->loadable = dfw->is_loadable;
> + skl_tplg_fill_fmt_v4(mconfig->module->formats[0].inputs, dfw->in_fmt,
> + MAX_IN_QUEUE);
> + skl_tplg_fill_fmt_v4(mconfig->module->formats[0].outputs, dfw->out_fmt,
> + MAX_OUT_QUEUE);
> +
> + mconfig->params_fixup = dfw->params_fixup;
> + mconfig->converter = dfw->converter;
> + mconfig->m_type = dfw->module_type;
> + mconfig->vbus_id = dfw->vbus_id;
> + mconfig->module->resources[0].is_pages = dfw->mem_pages;
> +
> + ret = skl_tplg_add_pipe_v4(dev, mconfig, skl, &dfw->pipe);
> + if (ret)
> + return ret;
> +
> + mconfig->dev_type = dfw->dev_type;
> + mconfig->hw_conn_type = dfw->hw_conn_type;
> + mconfig->time_slot = dfw->time_slot;
> + mconfig->formats_config.caps_size = dfw->caps.caps_size;
> +
> + mconfig->m_in_pin = devm_kzalloc(dev,
> + MAX_IN_QUEUE * sizeof(*mconfig->m_in_pin),
> + GFP_KERNEL);
> + if (!mconfig->m_in_pin)
> + return -ENOMEM;
> +
> + mconfig->m_out_pin = devm_kzalloc(dev,
> + MAX_OUT_QUEUE * sizeof(*mconfig->m_out_pin),
> + GFP_KERNEL);
> + if (!mconfig->m_out_pin)
> + return -ENOMEM;
> +
> + skl_fill_module_pin_info_v4(dfw->in_pin, mconfig->m_in_pin,
> + dfw->is_dynamic_in_pin,
> + mconfig->module->max_input_pins);
> + skl_fill_module_pin_info_v4(dfw->out_pin, mconfig->m_out_pin,
> + dfw->is_dynamic_out_pin,
> + mconfig->module->max_output_pins);
> +
> + if (mconfig->formats_config.caps_size) {
> + mconfig->formats_config.set_params = dfw->caps.set_params;
> + mconfig->formats_config.param_id = dfw->caps.param_id;
> + mconfig->formats_config.caps =
> + devm_kzalloc(dev, mconfig->formats_config.caps_size,
> + GFP_KERNEL);
> + if (!mconfig->formats_config.caps)
> + return -ENOMEM;
> + memcpy(mconfig->formats_config.caps, dfw->caps.caps,
> + dfw->caps.caps_size);
> + }
> +
> + return 0;
> +}
> +
> /*
> * Parse the private data for the token and corresponding value.
> * The private data can have multiple data blocks. So, a data block
> @@ -2739,6 +2901,13 @@ static int skl_tplg_get_pvt_data(struct
> snd_soc_tplg_dapm_widget *tplg_w,
> char *data;
> int ret;
>
> + /*
> + * v4 configuration files have a valid UUID at the start of
> + * the widget's private data.
> + */
> + if (uuid_is_valid((char *)tplg_w->priv.data))
> + return skl_tplg_get_pvt_data_v4(tplg_w, skl, dev, mconfig);
> +
> /* Read the NUM_DATA_BLOCKS descriptor */
> array = (struct snd_soc_tplg_vendor_array *)tplg_w->priv.data;
> ret = skl_tplg_get_desc_blocks(dev, array);
> diff --git a/sound/soc/intel/skylake/skl-tplg-interface.h
> b/sound/soc/intel/skylake/skl-tplg-interface.h
> index f8d1749a2e0c..b0e3d376594c 100644
> --- a/sound/soc/intel/skylake/skl-tplg-interface.h
> +++ b/sound/soc/intel/skylake/skl-tplg-interface.h
> @@ -169,4 +169,78 @@ enum skl_tuple_type {
> SKL_TYPE_DATA
> };
>
> +/* v4 configuration data */
> +
> +struct skl_dfw_v4_module_pin {
> + u16 module_id;
> + u16 instance_id;
> +} __packed;
> +
> +struct skl_dfw_v4_module_fmt {
> + u32 channels;
> + u32 freq;
> + u32 bit_depth;
> + u32 valid_bit_depth;
> + u32 ch_cfg;
> + u32 interleaving_style;
> + u32 sample_type;
> + u32 ch_map;
> +} __packed;
> +
> +struct skl_dfw_v4_module_caps {
> + u32 set_params:2;
> + u32 rsvd:30;
> + u32 param_id;
> + u32 caps_size;
> + u32 caps[HDA_SST_CFG_MAX];
> +} __packed;
> +
> +struct skl_dfw_v4_pipe {
> + u8 pipe_id;
> + u8 pipe_priority;
> + u16 conn_type:4;
> + u16 rsvd:4;
> + u16 memory_pages:8;
> +} __packed;
> +
> +struct skl_dfw_v4_module {
> + char uuid[SKL_UUID_STR_SZ];
> +
> + u16 module_id;
> + u16 instance_id;
> + u32 max_mcps;
> + u32 mem_pages;
> + u32 obs;
> + u32 ibs;
> + u32 vbus_id;
> +
> + u32 max_in_queue:8;
> + u32 max_out_queue:8;
> + u32 time_slot:8;
> + u32 core_id:4;
> + u32 rsvd1:4;
> +
> + u32 module_type:8;
> + u32 conn_type:4;
> + u32 dev_type:4;
> + u32 hw_conn_type:4;
> + u32 rsvd2:12;
> +
> + u32 params_fixup:8;
> + u32 converter:8;
> + u32 input_pin_type:1;
> + u32 output_pin_type:1;
> + u32 is_dynamic_in_pin:1;
> + u32 is_dynamic_out_pin:1;
> + u32 is_loadable:1;
> + u32 rsvd3:11;
> +
> + struct skl_dfw_v4_pipe pipe;
> + struct skl_dfw_v4_module_fmt in_fmt[MAX_IN_QUEUE];
> + struct skl_dfw_v4_module_fmt out_fmt[MAX_OUT_QUEUE];
> + struct skl_dfw_v4_module_pin in_pin[MAX_IN_QUEUE];
> + struct skl_dfw_v4_module_pin out_pin[MAX_OUT_QUEUE];
> + struct skl_dfw_v4_module_caps caps;
> +} __packed;
> +
> #endif
> diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
> index 986b8b2f90fb..d66b2e5ccd67 100644
> --- a/sound/soc/soc-topology.c
> +++ b/sound/soc/soc-topology.c
> @@ -2293,8 +2293,11 @@ static int manifest_new_ver(struct soc_tplg *tplg,
> *manifest = NULL;
>
> if (src->size != sizeof(*src_v4)) {
> - dev_err(tplg->dev, "ASoC: invalid manifest size\n");
> - return -EINVAL;
> + dev_warn(tplg->dev, "ASoC: invalid manifest size %d\n",
> + src->size);
> + if (src->size)
> + return -EINVAL;
> + src->size = sizeof(*src_v4);
> }
>
> dev_warn(tplg->dev, "ASoC: old version of manifest\n");
> --
> 2.17.0.441.gb46fe60e1d-goog
>
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> alsa-de...@alsa-project.org
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--
