On 10/6/19 10:22 AM, Jaroslav Kysela wrote:
For distributions, we need one place where we can decide
which driver will be activated for the auto-configation of the
Intel's HDA hardware with DSP. Actually, we cover three drivers:
* Legacy HDA
* Intel SST
* Intel Sound Open Firmware (SOF)
All those drivers registers similar PCI IDs, so the first
driver probed from the PCI stack can win. But... it is not
guaranteed that the correct driver wins.
This commit changes Intel's NHLT ACPI module to a common
DSP probe module for the Intel's hardware. All above sound
drivers calls this code. The user can force another behaviour
using the module parameter 'dsp_driver' located in
the 'snd-intel-dspcfg' module.
This change allows to add specific dmi checks for the specific
systems. The examples are taken from the pull request:
https://github.com/thesofproject/linux/pull/927
Tested on Lenovo Carbon X1 7th gen.
Thanks Jaroslav, I like the ideas in the patch, the flags+DMI table is
quite elegant.
We will need to do additional checks for the quirks, e.g. I know there
is a 'Phaser' Chromebook with HDaudio and I don't recall if they use
DMICs. I also don't know if we always have the NHTL information when the
legacy BIOS is used.
It's likely that we will have multiple iterations before getting this
right. And we'll have to add SoundWire support as well (which isn't that
hard, I already have all the ACPI parsing needed to detect if a link is
enabled).
Some additional comments below.
+module_param(dsp_driver, int, 0444);
+MODULE_PARM_DESC(dsp_driver, "Force the DSP driver for Intel DSP (0=auto, 1=legacy, 2=SST, 3=SOF)");
+
+#define FLAG_SST (1<<0)
+#define FLAG_SOF (1<<1)
+#define FLAG_SOF_ONLY_IF_DMIC (1<<16)
+
+struct config_entry {
+ u32 flags;
+ u16 device;
+ const struct dmi_system_id *dmi_table;
+};
+
+/*
+ * configuration table - the order of entries is important!
It's not really the order but the exclusion between SST and SOF for the
same PCI ID?
+ */
+static const struct config_entry config_table[] = {
+/* Cometlake-LP */
+#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_LP)
+ {
+ /* prefer SST */
+ .flags = FLAG_SST,
+ .device = 0x02c8,
+ },
+#elif IS_ENABLED(CONFIG_SND_SOC_SOF_COMETLAKE_LP)
+ {
+ .flags = FLAG_SOF,
need to add FLAG_SOF_ONLY_IF_DMIC
+ .device = 0x02c8,
+ },
+#endif
+/* Cometlake-H */
+#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_H)
+ {
+ .flags = FLAG_SST,
+ .device = 0x06c8,
+ },
+#elif IS_ENABLED(CONFIG_SND_SOC_SOF_COMETLAKE_H)
+ {
+ .flags = FLAG_SOF,
| FLAG_SOF_ONLY_IF_DMIC
+ .device = 0x06c8,
+ },
+#endif
+/* Merrifield */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_MERRIFIELD)
+ {
+ .flags = FLAG_SOF,
+ .device = 0x119a,
+ },
+#endif
+/* Broxton-T */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_APOLLOLAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0x1a98,
+ },
+#endif
+/* Geminilake */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_GEMINILAKE)
+ {
+ .flags = FLAG_SOF,
can we have more than one table per PCI ID? e.g. in this case it'd be
good to have the DMIC case separate from Google.
+ .device = 0x3198,
+ .dmi_table = (const struct dmi_system_id []) {
+ {
+ .ident = "Google Chromebooks",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Google"),
+ }
+ },
+ {}
+ }
+ },
+#endif
+#if IS_ENABLED(CONFIG_SND_SOC_INTEL_GLK)
should it be elif, as done for CometLake/CML?
+ {
+ .flags = FLAG_SST,
+ .device = 0x3198,
+ },
+#endif
+/* Icelake */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_ICELAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0x34c8,
+ },
+#endif
+/* Elkhart Lake */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_ELKHARTLAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0x4b55,
+ },
+#endif
+/* Appololake (Broxton-P) */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_APOLLOLAKE)
+ {
+ .flags = FLAG_SOF,
+ .device = 0x5a98,
+ .dmi_table = (const struct dmi_system_id []) {
+ {
+ .ident = "Up Squared",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
+ DMI_MATCH(DMI_BOARD_NAME, "UP-APL01"),
+ }
+ },
+ {}
+ }
+ },
+#endif
+#if IS_ENABLED(CONFIG_SND_SOC_INTEL_APL)
elif?
+ {
+ .flags = FLAG_SST,
+ .device = 0x5a98,
+ },
+#endif
+/* Cannonlake */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_CANNONLAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0x9dc8,
+ },
+#endif
+/* Sunrise Point-LP */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_SKYLAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0x9d70,
+ },
+#endif
+/* Kabylake-LP */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_KABYLAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0x9d71,
+ },
+#endif
SKL and SKL are not supported by SOF for now, and SST doesn't support
HDaudio+DMIC combinations
This should be FLAG_SST but only for Google Chromebooks, e.g.
.flags = FLAG_SST,
.device = 0x9d70 or 0x9d71
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
