Release 4.17 sound/soc/intel/skylake/skl-nhlt.c
/*
* skl-nhlt.c - Intel SKL Platform NHLT parsing
*
* Copyright (C) 2015 Intel Corp
* Author: Sanjiv Kumar <sanjiv.kumar@intel.com>
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
*/
#include <linux/pci.h>
#include "skl.h"
#include "skl-i2s.h"
#define NHLT_ACPI_HEADER_SIG "NHLT"
/* Unique identification for getting NHLT blobs */
static guid_t osc_guid =
GUID_INIT(0xA69F886E, 0x6CEB, 0x4594,
0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53);
struct nhlt_acpi_table *skl_nhlt_init(struct device *dev)
{
acpi_handle handle;
union acpi_object *obj;
struct nhlt_resource_desc *nhlt_ptr = NULL;
struct nhlt_acpi_table *nhlt_table = NULL;
handle = ACPI_HANDLE(dev);
if (!handle) {
dev_err(dev, "Didn't find ACPI_HANDLE\n");
return NULL;
}
obj = acpi_evaluate_dsm(handle, &osc_guid, 1, 1, NULL);
if (obj && obj->type == ACPI_TYPE_BUFFER) {
nhlt_ptr = (struct nhlt_resource_desc *)obj->buffer.pointer;
if (nhlt_ptr->length)
nhlt_table = (struct nhlt_acpi_table *)
memremap(nhlt_ptr->min_addr, nhlt_ptr->length,
MEMREMAP_WB);
ACPI_FREE(obj);
if (nhlt_table && (strncmp(nhlt_table->header.signature,
NHLT_ACPI_HEADER_SIG,
strlen(NHLT_ACPI_HEADER_SIG)) != 0)) {
memunmap(nhlt_table);
dev_err(dev, "NHLT ACPI header signature incorrect\n");
return NULL;
}
return nhlt_table;
}
dev_err(dev, "device specific method to extract NHLT blob failed\n");
return NULL;
}
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| Dan J Williams | 3 | 1.63% | 1 | 14.29% |
| Andy Shevchenko | 2 | 1.09% | 1 | 14.29% |
| Total | 184 | 100.00% | 7 | 100.00% |
void skl_nhlt_free(struct nhlt_acpi_table *nhlt)
{
memunmap((void *) nhlt);
}
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static struct nhlt_specific_cfg *skl_get_specific_cfg(
struct device *dev, struct nhlt_fmt *fmt,
u8 no_ch, u32 rate, u16 bps, u8 linktype)
{
struct nhlt_specific_cfg *sp_config;
struct wav_fmt *wfmt;
struct nhlt_fmt_cfg *fmt_config = fmt->fmt_config;
int i;
dev_dbg(dev, "Format count =%d\n", fmt->fmt_count);
for (i = 0; i < fmt->fmt_count; i++) {
wfmt = &fmt_config->fmt_ext.fmt;
dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", wfmt->channels,
wfmt->bits_per_sample, wfmt->samples_per_sec);
if (wfmt->channels == no_ch && wfmt->bits_per_sample == bps) {
/*
* if link type is dmic ignore rate check as the blob is
* generic for all rates
*/
sp_config = &fmt_config->config;
if (linktype == NHLT_LINK_DMIC)
return sp_config;
if (wfmt->samples_per_sec == rate)
return sp_config;
}
fmt_config = (struct nhlt_fmt_cfg *)(fmt_config->config.caps +
fmt_config->config.size);
}
return NULL;
}
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static void dump_config(struct device *dev, u32 instance_id, u8 linktype,
u8 s_fmt, u8 num_channels, u32 s_rate, u8 dirn, u16 bps)
{
dev_dbg(dev, "Input configuration\n");
dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", num_channels, s_fmt, s_rate);
dev_dbg(dev, "vbus_id=%d link_type=%d\n", instance_id, linktype);
dev_dbg(dev, "bits_per_sample=%d\n", bps);
}
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static bool skl_check_ep_match(struct device *dev, struct nhlt_endpoint *epnt,
u32 instance_id, u8 link_type, u8 dirn, u8 dev_type)
{
dev_dbg(dev, "vbus_id=%d link_type=%d dir=%d dev_type = %d\n",
epnt->virtual_bus_id, epnt->linktype,
epnt->direction, epnt->device_type);
if ((epnt->virtual_bus_id == instance_id) &&
(epnt->linktype == link_type) &&
(epnt->direction == dirn)) {
/* do not check dev_type for DMIC link type */
if (epnt->linktype == NHLT_LINK_DMIC)
return true;
if (epnt->device_type == dev_type)
return true;
}
return false;
}
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| Total | 105 | 100.00% | 3 | 100.00% |
struct nhlt_specific_cfg
*skl_get_ep_blob(struct skl *skl, u32 instance, u8 link_type,
u8 s_fmt, u8 num_ch, u32 s_rate,
u8 dirn, u8 dev_type)
{
struct nhlt_fmt *fmt;
struct nhlt_endpoint *epnt;
struct hdac_bus *bus = ebus_to_hbus(&skl->ebus);
struct device *dev = bus->dev;
struct nhlt_specific_cfg *sp_config;
struct nhlt_acpi_table *nhlt = skl->nhlt;
u16 bps = (s_fmt == 16) ? 16 : 32;
u8 j;
dump_config(dev, instance, link_type, s_fmt, num_ch, s_rate, dirn, bps);
epnt = (struct nhlt_endpoint *)nhlt->desc;
dev_dbg(dev, "endpoint count =%d\n", nhlt->endpoint_count);
for (j = 0; j < nhlt->endpoint_count; j++) {
if (skl_check_ep_match(dev, epnt, instance, link_type,
dirn, dev_type)) {
fmt = (struct nhlt_fmt *)(epnt->config.caps +
epnt->config.size);
sp_config = skl_get_specific_cfg(dev, fmt, num_ch,
s_rate, bps, link_type);
if (sp_config)
return sp_config;
}
epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
}
return NULL;
}
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| Jeeja KP | 234 | 97.91% | 3 | 75.00% |
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| Total | 239 | 100.00% | 4 | 100.00% |
int skl_get_dmic_geo(struct skl *skl)
{
struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
struct nhlt_endpoint *epnt;
struct nhlt_dmic_array_config *cfg;
struct device *dev = &skl->pci->dev;
unsigned int dmic_geo = 0;
u8 j;
epnt = (struct nhlt_endpoint *)nhlt->desc;
for (j = 0; j < nhlt->endpoint_count; j++) {
if (epnt->linktype == NHLT_LINK_DMIC) {
cfg = (struct nhlt_dmic_array_config *)
(epnt->config.caps);
switch (cfg->array_type) {
case NHLT_MIC_ARRAY_2CH_SMALL:
case NHLT_MIC_ARRAY_2CH_BIG:
dmic_geo |= MIC_ARRAY_2CH;
break;
case NHLT_MIC_ARRAY_4CH_1ST_GEOM:
case NHLT_MIC_ARRAY_4CH_L_SHAPED:
case NHLT_MIC_ARRAY_4CH_2ND_GEOM:
dmic_geo |= MIC_ARRAY_4CH;
break;
default:
dev_warn(dev, "undefined DMIC array_type 0x%0x\n",
cfg->array_type);
}
}
epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
}
return dmic_geo;
}
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| Yong Zhi | 175 | 100.00% | 1 | 100.00% |
| Total | 175 | 100.00% | 1 | 100.00% |
static void skl_nhlt_trim_space(char *trim)
{
char *s = trim;
int cnt;
int i;
cnt = 0;
for (i = 0; s[i]; i++) {
if (!isspace(s[i]))
s[cnt++] = s[i];
}
s[cnt] = '\0';
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Vinod Koul | 68 | 95.77% | 1 | 50.00% |
| Subhransu S. Prusty | 3 | 4.23% | 1 | 50.00% |
| Total | 71 | 100.00% | 2 | 100.00% |
int skl_nhlt_update_topology_bin(struct skl *skl)
{
struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
struct hdac_bus *bus = ebus_to_hbus(&skl->ebus);
struct device *dev = bus->dev;
dev_dbg(dev, "oem_id %.6s, oem_table_id %8s oem_revision %d\n",
nhlt->header.oem_id, nhlt->header.oem_table_id,
nhlt->header.oem_revision);
snprintf(skl->tplg_name, sizeof(skl->tplg_name), "%x-%.6s-%.8s-%d%s",
skl->pci_id, nhlt->header.oem_id, nhlt->header.oem_table_id,
nhlt->header.oem_revision, "-tplg.bin");
skl_nhlt_trim_space(skl->tplg_name);
return 0;
}
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static ssize_t skl_nhlt_platform_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_ext_bus *ebus = pci_get_drvdata(pci);
struct skl *skl = ebus_to_skl(ebus);
struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
char platform_id[32];
sprintf(platform_id, "%x-%.6s-%.8s-%d", skl->pci_id,
nhlt->header.oem_id, nhlt->header.oem_table_id,
nhlt->header.oem_revision);
skl_nhlt_trim_space(platform_id);
return sprintf(buf, "%s\n", platform_id);
}
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static DEVICE_ATTR(platform_id, 0444, skl_nhlt_platform_id_show, NULL);
int skl_nhlt_create_sysfs(struct skl *skl)
{
struct device *dev = &skl->pci->dev;
if (sysfs_create_file(&dev->kobj, &dev_attr_platform_id.attr))
dev_warn(dev, "Error creating sysfs entry\n");
return 0;
}
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void skl_nhlt_remove_sysfs(struct skl *skl)
{
struct device *dev = &skl->pci->dev;
sysfs_remove_file(&dev->kobj, &dev_attr_platform_id.attr);
}
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/*
* Queries NHLT for all the fmt configuration for a particular endpoint and
* stores all possible rates supported in a rate table for the corresponding
* sclk/sclkfs.
*/
static void skl_get_ssp_clks(struct skl *skl, struct skl_ssp_clk *ssp_clks,
struct nhlt_fmt *fmt, u8 id)
{
struct skl_i2s_config_blob_ext *i2s_config_ext;
struct skl_i2s_config_blob_legacy *i2s_config;
struct skl_clk_parent_src *parent;
struct skl_ssp_clk *sclk, *sclkfs;
struct nhlt_fmt_cfg *fmt_cfg;
struct wav_fmt_ext *wav_fmt;
unsigned long rate = 0;
bool present = false;
int rate_index = 0;
u16 channels, bps;
u8 clk_src;
int i, j;
u32 fs;
sclk = &ssp_clks[SKL_SCLK_OFS];
sclkfs = &ssp_clks[SKL_SCLKFS_OFS];
if (fmt->fmt_count == 0)
return;
for (i = 0; i < fmt->fmt_count; i++) {
fmt_cfg = &fmt->fmt_config[i];
wav_fmt = &fmt_cfg->fmt_ext;
channels = wav_fmt->fmt.channels;
bps = wav_fmt->fmt.bits_per_sample;
fs = wav_fmt->fmt.samples_per_sec;
/*
* In case of TDM configuration on a ssp, there can
* be more than one blob in which channel masks are
* different for each usecase for a specific rate and bps.
* But the sclk rate will be generated for the total
* number of channels used for that endpoint.
*
* So for the given fs and bps, choose blob which has
* the superset of all channels for that endpoint and
* derive the rate.
*/
for (j = i; j < fmt->fmt_count; j++) {
fmt_cfg = &fmt->fmt_config[j];
wav_fmt = &fmt_cfg->fmt_ext;
if ((fs == wav_fmt->fmt.samples_per_sec) &&
(bps == wav_fmt->fmt.bits_per_sample))
channels = max_t(u16, channels,
wav_fmt->fmt.channels);
}
rate = channels * bps * fs;
/* check if the rate is added already to the given SSP's sclk */
for (j = 0; (j < SKL_MAX_CLK_RATES) &&
(sclk[id].rate_cfg[j].rate != 0); j++) {
if (sclk[id].rate_cfg[j].rate == rate) {
present = true;
break;
}
}
/* Fill rate and parent for sclk/sclkfs */
if (!present) {
i2s_config_ext = (struct skl_i2s_config_blob_ext *)
fmt->fmt_config[0].config.caps;
/* MCLK Divider Source Select */
if (is_legacy_blob(i2s_config_ext->hdr.sig)) {
i2s_config = ext_to_legacy_blob(i2s_config_ext);
clk_src = get_clk_src(i2s_config->mclk,
SKL_MNDSS_DIV_CLK_SRC_MASK);
} else {
clk_src = get_clk_src(i2s_config_ext->mclk,
SKL_MNDSS_DIV_CLK_SRC_MASK);
}
parent = skl_get_parent_clk(clk_src);
/*
* Do not copy the config data if there is no parent
* clock available for this clock source select
*/
if (!parent)
continue;
sclk[id].rate_cfg[rate_index].rate = rate;
sclk[id].rate_cfg[rate_index].config = fmt_cfg;
sclkfs[id].rate_cfg[rate_index].rate = rate;
sclkfs[id].rate_cfg[rate_index].config = fmt_cfg;
sclk[id].parent_name = parent->name;
sclkfs[id].parent_name = parent->name;
rate_index++;
}
}
}
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| Total | 476 | 100.00% | 4 | 100.00% |
static void skl_get_mclk(struct skl *skl, struct skl_ssp_clk *mclk,
struct nhlt_fmt *fmt, u8 id)
{
struct skl_i2s_config_blob_ext *i2s_config_ext;
struct skl_i2s_config_blob_legacy *i2s_config;
struct nhlt_specific_cfg *fmt_cfg;
struct skl_clk_parent_src *parent;
u32 clkdiv, div_ratio;
u8 clk_src;
fmt_cfg = &fmt->fmt_config[0].config;
i2s_config_ext = (struct skl_i2s_config_blob_ext *)fmt_cfg->caps;
/* MCLK Divider Source Select and divider */
if (is_legacy_blob(i2s_config_ext->hdr.sig)) {
i2s_config = ext_to_legacy_blob(i2s_config_ext);
clk_src = get_clk_src(i2s_config->mclk,
SKL_MCLK_DIV_CLK_SRC_MASK);
clkdiv = i2s_config->mclk.mdivr &
SKL_MCLK_DIV_RATIO_MASK;
} else {
clk_src = get_clk_src(i2s_config_ext->mclk,
SKL_MCLK_DIV_CLK_SRC_MASK);
clkdiv = i2s_config_ext->mclk.mdivr[0] &
SKL_MCLK_DIV_RATIO_MASK;
}
/* bypass divider */
div_ratio = 1;
if (clkdiv != SKL_MCLK_DIV_RATIO_MASK)
/* Divider is 2 + clkdiv */
div_ratio = clkdiv + 2;
/* Calculate MCLK rate from source using div value */
parent = skl_get_parent_clk(clk_src);
if (!parent)
return;
mclk[id].rate_cfg[0].rate = parent->rate/div_ratio;
mclk[id].rate_cfg[0].config = &fmt->fmt_config[0];
mclk[id].parent_name = parent->name;
}
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| Guneshwor Singh | 1 | 0.44% | 1 | 33.33% |
| Total | 225 | 100.00% | 3 | 100.00% |
void skl_get_clks(struct skl *skl, struct skl_ssp_clk *ssp_clks)
{
struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
struct nhlt_endpoint *epnt;
struct nhlt_fmt *fmt;
int i;
u8 id;
epnt = (struct nhlt_endpoint *)nhlt->desc;
for (i = 0; i < nhlt->endpoint_count; i++) {
if (epnt->linktype == NHLT_LINK_SSP) {
id = epnt->virtual_bus_id;
fmt = (struct nhlt_fmt *)(epnt->config.caps
+ epnt->config.size);
skl_get_ssp_clks(skl, ssp_clks, fmt, id);
skl_get_mclk(skl, ssp_clks, fmt, id);
}
epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
}
}
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| Total | 151 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sriram Periyasamy | 848 | 37.41% | 2 | 10.53% |
| Jeeja KP | 714 | 31.50% | 5 | 26.32% |
| Subhransu S. Prusty | 213 | 9.40% | 1 | 5.26% |
| Vinod Koul | 196 | 8.65% | 2 | 10.53% |
| Yong Zhi | 178 | 7.85% | 1 | 5.26% |
| Pankaj Bharadiya | 45 | 1.99% | 1 | 5.26% |
| Andy Shevchenko | 20 | 0.88% | 1 | 5.26% |
| Guneshwor Singh | 19 | 0.84% | 2 | 10.53% |
| Senthilnathan Veppur | 18 | 0.79% | 1 | 5.26% |
| Dan Carpenter | 6 | 0.26% | 1 | 5.26% |
| Takashi Iwai | 6 | 0.26% | 1 | 5.26% |
| Dan J Williams | 4 | 0.18% | 1 | 5.26% |
| Total | 2267 | 100.00% | 19 | 100.00% |
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