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authorJaroslav Kysela <perex@perex.cz>2019-10-22 19:43:12 +0200
committerTakashi Iwai <tiwai@suse.de>2019-10-23 06:31:37 +0200
commit82d9d54a6c0ee8b12211fa4e59fd940a2da4e063 (patch)
treef2335fd53f409bf724f06c812fa68f112b418989 /sound/hda/intel-dsp-config.c
parentPCI: Fix missing inline for pci_pr3_present() (diff)
downloadlinux-82d9d54a6c0ee8b12211fa4e59fd940a2da4e063.tar.xz
linux-82d9d54a6c0ee8b12211fa4e59fd940a2da4e063.zip
ALSA: hda: add Intel DSP configuration / probe code
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. Signed-off-by: Jaroslav Kysela <perex@perex.cz> Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191022174313.29087-1-perex@perex.cz Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda/intel-dsp-config.c')
-rw-r--r--sound/hda/intel-dsp-config.c249
1 files changed, 249 insertions, 0 deletions
diff --git a/sound/hda/intel-dsp-config.c b/sound/hda/intel-dsp-config.c
new file mode 100644
index 000000000000..d9f6d9e872b4
--- /dev/null
+++ b/sound/hda/intel-dsp-config.c
@@ -0,0 +1,249 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2019 Jaroslav Kysela <perex@perex.cz>
+
+#include <linux/bits.h>
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <sound/core.h>
+#include <sound/intel-dsp-config.h>
+#include <sound/intel-nhlt.h>
+
+static int dsp_driver;
+
+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 BIT(0)
+#define FLAG_SOF BIT(1)
+#define FLAG_SOF_ONLY_IF_DMIC BIT(16)
+
+struct config_entry {
+ u32 flags;
+ u16 device;
+ const struct dmi_system_id *dmi_table;
+};
+
+/*
+ * configuration table
+ * - the order of similar PCI ID entries is important!
+ * - the first successful match will win
+ */
+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,
+ .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,
+ .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,
+ .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)
+ {
+ .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)
+ {
+ .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
+/* Tigerlake */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_TIGERLAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0xa0c8,
+ },
+#endif
+/* Coffelake */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_COFFEELAKE)
+ {
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .device = 0xa348,
+ },
+#endif
+};
+
+static const struct config_entry *snd_intel_dsp_find_config
+ (struct pci_dev *pci, const struct config_entry *table, u32 len)
+{
+ u16 device;
+
+ device = pci->device;
+ for (; len > 0; len--, table++) {
+ if (table->device != device)
+ continue;
+ if (table->dmi_table && !dmi_check_system(table->dmi_table))
+ continue;
+ return table;
+ }
+ return NULL;
+}
+
+static int snd_intel_dsp_check_dmic(struct pci_dev *pci)
+{
+ struct nhlt_acpi_table *nhlt;
+ int ret = 0;
+
+ nhlt = intel_nhlt_init(&pci->dev);
+ if (nhlt) {
+ if (intel_nhlt_get_dmic_geo(&pci->dev, nhlt))
+ ret = 1;
+ intel_nhlt_free(nhlt);
+ }
+ return ret;
+}
+
+int snd_intel_dsp_driver_probe(struct pci_dev *pci)
+{
+ const struct config_entry *cfg;
+
+ if (dsp_driver > 0 && dsp_driver <= SND_INTEL_DSP_DRIVER_LAST)
+ return dsp_driver;
+
+ /* Intel vendor only */
+ if (snd_BUG_ON(pci->vendor != 0x8086))
+ return SND_INTEL_DSP_DRIVER_ANY;
+
+ /*
+ * detect DSP by checking class/subclass/prog-id information
+ * class=04 subclass 03 prog-if 00: no DSP, use legacy driver
+ * class=04 subclass 01 prog-if 00: DSP is present
+ * (and may be required e.g. for DMIC or SSP support)
+ * class=04 subclass 03 prog-if 80: use DSP or legacy mode
+ */
+ if (pci->class == 0x040300)
+ return SND_INTEL_DSP_DRIVER_LEGACY;
+ if (pci->class != 0x040100 && pci->class != 0x040380) {
+ dev_err(&pci->dev, "Unknown PCI class/subclass/prog-if information (0x%06x) found, selecting HDA legacy driver\n", pci->class);
+ return SND_INTEL_DSP_DRIVER_LEGACY;
+ }
+
+ dev_info(&pci->dev, "DSP detected with PCI class/subclass/prog-if info 0x%06x\n", pci->class);
+
+ /* find the configuration for the specific device */
+ cfg = snd_intel_dsp_find_config(pci, config_table, ARRAY_SIZE(config_table));
+ if (!cfg)
+ return SND_INTEL_DSP_DRIVER_ANY;
+
+ if (cfg->flags & FLAG_SOF) {
+ if (cfg->flags & FLAG_SOF_ONLY_IF_DMIC) {
+ if (snd_intel_dsp_check_dmic(pci)) {
+ dev_info(&pci->dev, "Digital mics found on Skylake+ platform, using SOF driver\n");
+ return SND_INTEL_DSP_DRIVER_SOF;
+ }
+ } else {
+ return SND_INTEL_DSP_DRIVER_SOF;
+ }
+ }
+
+ if (cfg->flags & FLAG_SST)
+ return SND_INTEL_DSP_DRIVER_SST;
+
+ return SND_INTEL_DSP_DRIVER_LEGACY;
+}
+EXPORT_SYMBOL_GPL(snd_intel_dsp_driver_probe);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Intel DSP config driver");