ALSA: hda: move Intel SoundWire ACPI scan to dedicated module
The ACPI scan capabilities is called from the intel-dspconfig as well as the SOF/HDaudio drivers. This creates dependencies and randconfig issues when HDaudio and SOF/SoundWire are not all configured as modules. To simplify Kconfig dependencies between HDAudio, SoundWire, SOF and intel-dspconfig, move the ACPI scan helpers to a dedicated module. This follows the same idea as NHLT helpers which are already handled as a dedicated module. The only functional change is that the kernel parameter to filter links is now handled by a different module, but that was only provided for developers needing work-arounds for early BIOS releases. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Bard Liao <bard.liao@intel.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210302003125.1178419-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
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commit
08c2a4bc9f
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@ -48,8 +48,6 @@ struct sdw_intel {
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#endif
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#endif
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};
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};
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#define SDW_INTEL_QUIRK_MASK_BUS_DISABLE BIT(1)
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int intel_master_startup(struct platform_device *pdev);
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int intel_master_startup(struct platform_device *pdev);
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int intel_master_process_wakeen_event(struct platform_device *pdev);
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int intel_master_process_wakeen_event(struct platform_device *pdev);
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@ -18,42 +18,12 @@
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#include "cadence_master.h"
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#include "cadence_master.h"
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#include "intel.h"
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#include "intel.h"
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#define SDW_LINK_TYPE 4 /* from Intel ACPI documentation */
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#define SDW_MAX_LINKS 4
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#define SDW_SHIM_LCAP 0x0
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#define SDW_SHIM_LCAP 0x0
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#define SDW_SHIM_BASE 0x2C000
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#define SDW_SHIM_BASE 0x2C000
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#define SDW_ALH_BASE 0x2C800
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#define SDW_ALH_BASE 0x2C800
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#define SDW_LINK_BASE 0x30000
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#define SDW_LINK_BASE 0x30000
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#define SDW_LINK_SIZE 0x10000
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#define SDW_LINK_SIZE 0x10000
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static int ctrl_link_mask;
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module_param_named(sdw_link_mask, ctrl_link_mask, int, 0444);
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MODULE_PARM_DESC(sdw_link_mask, "Intel link mask (one bit per link)");
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static bool is_link_enabled(struct fwnode_handle *fw_node, int i)
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{
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struct fwnode_handle *link;
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char name[32];
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u32 quirk_mask = 0;
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/* Find master handle */
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snprintf(name, sizeof(name),
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"mipi-sdw-link-%d-subproperties", i);
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link = fwnode_get_named_child_node(fw_node, name);
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if (!link)
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return false;
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fwnode_property_read_u32(link,
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"intel-quirk-mask",
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&quirk_mask);
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if (quirk_mask & SDW_INTEL_QUIRK_MASK_BUS_DISABLE)
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return false;
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return true;
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}
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static int sdw_intel_cleanup(struct sdw_intel_ctx *ctx)
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static int sdw_intel_cleanup(struct sdw_intel_ctx *ctx)
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{
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{
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struct sdw_intel_link_res *link = ctx->links;
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struct sdw_intel_link_res *link = ctx->links;
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@ -81,74 +51,6 @@ static int sdw_intel_cleanup(struct sdw_intel_ctx *ctx)
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return 0;
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return 0;
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}
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}
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static int
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sdw_intel_scan_controller(struct sdw_intel_acpi_info *info)
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{
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struct acpi_device *adev;
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int ret, i;
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u8 count;
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if (acpi_bus_get_device(info->handle, &adev))
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return -EINVAL;
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/* Found controller, find links supported */
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count = 0;
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ret = fwnode_property_read_u8_array(acpi_fwnode_handle(adev),
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"mipi-sdw-master-count", &count, 1);
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/*
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* In theory we could check the number of links supported in
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* hardware, but in that step we cannot assume SoundWire IP is
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* powered.
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*
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* In addition, if the BIOS doesn't even provide this
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* 'master-count' property then all the inits based on link
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* masks will fail as well.
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*
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* We will check the hardware capabilities in the startup() step
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*/
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if (ret) {
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dev_err(&adev->dev,
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"Failed to read mipi-sdw-master-count: %d\n", ret);
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return -EINVAL;
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}
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/* Check count is within bounds */
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if (count > SDW_MAX_LINKS) {
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dev_err(&adev->dev, "Link count %d exceeds max %d\n",
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count, SDW_MAX_LINKS);
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return -EINVAL;
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}
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if (!count) {
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dev_warn(&adev->dev, "No SoundWire links detected\n");
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return -EINVAL;
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}
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dev_dbg(&adev->dev, "ACPI reports %d SDW Link devices\n", count);
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info->count = count;
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info->link_mask = 0;
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for (i = 0; i < count; i++) {
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if (ctrl_link_mask && !(ctrl_link_mask & BIT(i))) {
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dev_dbg(&adev->dev,
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"Link %d masked, will not be enabled\n", i);
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continue;
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}
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if (!is_link_enabled(acpi_fwnode_handle(adev), i)) {
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dev_dbg(&adev->dev,
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"Link %d not selected in firmware\n", i);
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continue;
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}
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info->link_mask |= BIT(i);
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}
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return 0;
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}
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#define HDA_DSP_REG_ADSPIC2 (0x10)
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#define HDA_DSP_REG_ADSPIC2 (0x10)
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#define HDA_DSP_REG_ADSPIS2 (0x14)
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#define HDA_DSP_REG_ADSPIS2 (0x14)
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#define HDA_DSP_REG_ADSPIC2_SNDW BIT(5)
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#define HDA_DSP_REG_ADSPIC2_SNDW BIT(5)
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@ -357,66 +259,6 @@ sdw_intel_startup_controller(struct sdw_intel_ctx *ctx)
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return 0;
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return 0;
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}
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}
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static acpi_status sdw_intel_acpi_cb(acpi_handle handle, u32 level,
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void *cdata, void **return_value)
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{
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struct sdw_intel_acpi_info *info = cdata;
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struct acpi_device *adev;
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acpi_status status;
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u64 adr;
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status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
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if (ACPI_FAILURE(status))
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return AE_OK; /* keep going */
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if (acpi_bus_get_device(handle, &adev)) {
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pr_err("%s: Couldn't find ACPI handle\n", __func__);
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return AE_NOT_FOUND;
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}
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info->handle = handle;
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/*
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* On some Intel platforms, multiple children of the HDAS
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* device can be found, but only one of them is the SoundWire
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* controller. The SNDW device is always exposed with
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* Name(_ADR, 0x40000000), with bits 31..28 representing the
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* SoundWire link so filter accordingly
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*/
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if (FIELD_GET(GENMASK(31, 28), adr) != SDW_LINK_TYPE)
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return AE_OK; /* keep going */
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/* device found, stop namespace walk */
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return AE_CTRL_TERMINATE;
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}
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/**
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* sdw_intel_acpi_scan() - SoundWire Intel init routine
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* @parent_handle: ACPI parent handle
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* @info: description of what firmware/DSDT tables expose
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*
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* This scans the namespace and queries firmware to figure out which
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* links to enable. A follow-up use of sdw_intel_probe() and
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* sdw_intel_startup() is required for creation of devices and bus
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* startup
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*/
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int sdw_intel_acpi_scan(acpi_handle *parent_handle,
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struct sdw_intel_acpi_info *info)
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{
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acpi_status status;
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info->handle = NULL;
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status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
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parent_handle, 1,
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sdw_intel_acpi_cb,
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NULL, info, NULL);
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if (ACPI_FAILURE(status) || info->handle == NULL)
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return -ENODEV;
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return sdw_intel_scan_controller(info);
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}
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EXPORT_SYMBOL_NS(sdw_intel_acpi_scan, SOUNDWIRE_INTEL_INIT);
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/**
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/**
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* sdw_intel_probe() - SoundWire Intel probe routine
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* sdw_intel_probe() - SoundWire Intel probe routine
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* @res: resource data
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* @res: resource data
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@ -187,4 +187,6 @@ void sdw_intel_enable_irq(void __iomem *mmio_base, bool enable);
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irqreturn_t sdw_intel_thread(int irq, void *dev_id);
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irqreturn_t sdw_intel_thread(int irq, void *dev_id);
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#define SDW_INTEL_QUIRK_MASK_BUS_DISABLE BIT(1)
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#endif
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#endif
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@ -44,9 +44,13 @@ config SND_INTEL_NHLT
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config SND_INTEL_DSP_CONFIG
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config SND_INTEL_DSP_CONFIG
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tristate
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tristate
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select SND_INTEL_NHLT if ACPI
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select SND_INTEL_NHLT if ACPI
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select SND_INTEL_SOUNDWIRE_ACPI if ACPI
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# this config should be selected only for Intel DSP platforms.
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# this config should be selected only for Intel DSP platforms.
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# A fallback is provided so that the code compiles in all cases.
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# A fallback is provided so that the code compiles in all cases.
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config SND_INTEL_SOUNDWIRE_ACPI
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tristate
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config SND_INTEL_BYT_PREFER_SOF
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config SND_INTEL_BYT_PREFER_SOF
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bool "Prefer SOF driver over SST on BY/CHT platforms"
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bool "Prefer SOF driver over SST on BY/CHT platforms"
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depends on SND_SST_ATOM_HIFI2_PLATFORM_ACPI && SND_SOC_SOF_BAYTRAIL
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depends on SND_SST_ATOM_HIFI2_PLATFORM_ACPI && SND_SOC_SOF_BAYTRAIL
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@ -17,3 +17,6 @@ obj-$(CONFIG_SND_HDA_EXT_CORE) += ext/
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snd-intel-dspcfg-objs := intel-dsp-config.o
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snd-intel-dspcfg-objs := intel-dsp-config.o
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snd-intel-dspcfg-$(CONFIG_SND_INTEL_NHLT) += intel-nhlt.o
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snd-intel-dspcfg-$(CONFIG_SND_INTEL_NHLT) += intel-nhlt.o
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obj-$(CONFIG_SND_INTEL_DSP_CONFIG) += snd-intel-dspcfg.o
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obj-$(CONFIG_SND_INTEL_DSP_CONFIG) += snd-intel-dspcfg.o
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snd-intel-sdw-acpi-objs := intel-sdw-acpi.o
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obj-$(CONFIG_SND_INTEL_SOUNDWIRE_ACPI) += snd-intel-sdw-acpi.o
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@ -557,4 +557,4 @@ EXPORT_SYMBOL_GPL(snd_intel_acpi_dsp_driver_probe);
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MODULE_LICENSE("GPL v2");
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("Intel DSP config driver");
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MODULE_DESCRIPTION("Intel DSP config driver");
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MODULE_IMPORT_NS(SOUNDWIRE_INTEL_INIT);
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MODULE_IMPORT_NS(SND_INTEL_SOUNDWIRE_ACPI);
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@ -0,0 +1,174 @@
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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// Copyright(c) 2015-2021 Intel Corporation.
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/*
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* SDW Intel ACPI scan helpers
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*/
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#include <linux/acpi.h>
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#include <linux/export.h>
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#include <linux/module.h>
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#include <linux/soundwire/sdw_intel.h>
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#include <linux/string.h>
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#define SDW_LINK_TYPE 4 /* from Intel ACPI documentation */
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#define SDW_MAX_LINKS 4
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static int ctrl_link_mask;
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module_param_named(sdw_link_mask, ctrl_link_mask, int, 0444);
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MODULE_PARM_DESC(sdw_link_mask, "Intel link mask (one bit per link)");
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static bool is_link_enabled(struct fwnode_handle *fw_node, int i)
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{
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struct fwnode_handle *link;
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char name[32];
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u32 quirk_mask = 0;
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/* Find master handle */
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snprintf(name, sizeof(name),
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"mipi-sdw-link-%d-subproperties", i);
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link = fwnode_get_named_child_node(fw_node, name);
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if (!link)
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return false;
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fwnode_property_read_u32(link,
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"intel-quirk-mask",
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&quirk_mask);
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if (quirk_mask & SDW_INTEL_QUIRK_MASK_BUS_DISABLE)
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return false;
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return true;
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}
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static int
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sdw_intel_scan_controller(struct sdw_intel_acpi_info *info)
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{
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struct acpi_device *adev;
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int ret, i;
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u8 count;
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if (acpi_bus_get_device(info->handle, &adev))
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return -EINVAL;
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/* Found controller, find links supported */
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count = 0;
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ret = fwnode_property_read_u8_array(acpi_fwnode_handle(adev),
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"mipi-sdw-master-count", &count, 1);
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/*
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* In theory we could check the number of links supported in
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* hardware, but in that step we cannot assume SoundWire IP is
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* powered.
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*
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* In addition, if the BIOS doesn't even provide this
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* 'master-count' property then all the inits based on link
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* masks will fail as well.
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*
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* We will check the hardware capabilities in the startup() step
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*/
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if (ret) {
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dev_err(&adev->dev,
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"Failed to read mipi-sdw-master-count: %d\n", ret);
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return -EINVAL;
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}
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/* Check count is within bounds */
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if (count > SDW_MAX_LINKS) {
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dev_err(&adev->dev, "Link count %d exceeds max %d\n",
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count, SDW_MAX_LINKS);
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return -EINVAL;
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}
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if (!count) {
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dev_warn(&adev->dev, "No SoundWire links detected\n");
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return -EINVAL;
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}
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dev_dbg(&adev->dev, "ACPI reports %d SDW Link devices\n", count);
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info->count = count;
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info->link_mask = 0;
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for (i = 0; i < count; i++) {
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if (ctrl_link_mask && !(ctrl_link_mask & BIT(i))) {
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dev_dbg(&adev->dev,
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"Link %d masked, will not be enabled\n", i);
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continue;
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}
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if (!is_link_enabled(acpi_fwnode_handle(adev), i)) {
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dev_dbg(&adev->dev,
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"Link %d not selected in firmware\n", i);
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continue;
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}
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info->link_mask |= BIT(i);
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||||||
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}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static acpi_status sdw_intel_acpi_cb(acpi_handle handle, u32 level,
|
||||||
|
void *cdata, void **return_value)
|
||||||
|
{
|
||||||
|
struct sdw_intel_acpi_info *info = cdata;
|
||||||
|
struct acpi_device *adev;
|
||||||
|
acpi_status status;
|
||||||
|
u64 adr;
|
||||||
|
|
||||||
|
status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
|
||||||
|
if (ACPI_FAILURE(status))
|
||||||
|
return AE_OK; /* keep going */
|
||||||
|
|
||||||
|
if (acpi_bus_get_device(handle, &adev)) {
|
||||||
|
pr_err("%s: Couldn't find ACPI handle\n", __func__);
|
||||||
|
return AE_NOT_FOUND;
|
||||||
|
}
|
||||||
|
|
||||||
|
info->handle = handle;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* On some Intel platforms, multiple children of the HDAS
|
||||||
|
* device can be found, but only one of them is the SoundWire
|
||||||
|
* controller. The SNDW device is always exposed with
|
||||||
|
* Name(_ADR, 0x40000000), with bits 31..28 representing the
|
||||||
|
* SoundWire link so filter accordingly
|
||||||
|
*/
|
||||||
|
if (FIELD_GET(GENMASK(31, 28), adr) != SDW_LINK_TYPE)
|
||||||
|
return AE_OK; /* keep going */
|
||||||
|
|
||||||
|
/* device found, stop namespace walk */
|
||||||
|
return AE_CTRL_TERMINATE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* sdw_intel_acpi_scan() - SoundWire Intel init routine
|
||||||
|
* @parent_handle: ACPI parent handle
|
||||||
|
* @info: description of what firmware/DSDT tables expose
|
||||||
|
*
|
||||||
|
* This scans the namespace and queries firmware to figure out which
|
||||||
|
* links to enable. A follow-up use of sdw_intel_probe() and
|
||||||
|
* sdw_intel_startup() is required for creation of devices and bus
|
||||||
|
* startup
|
||||||
|
*/
|
||||||
|
int sdw_intel_acpi_scan(acpi_handle *parent_handle,
|
||||||
|
struct sdw_intel_acpi_info *info)
|
||||||
|
{
|
||||||
|
acpi_status status;
|
||||||
|
|
||||||
|
info->handle = NULL;
|
||||||
|
status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
|
||||||
|
parent_handle, 1,
|
||||||
|
sdw_intel_acpi_cb,
|
||||||
|
NULL, info, NULL);
|
||||||
|
if (ACPI_FAILURE(status) || info->handle == NULL)
|
||||||
|
return -ENODEV;
|
||||||
|
|
||||||
|
return sdw_intel_scan_controller(info);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_NS(sdw_intel_acpi_scan, SND_INTEL_SOUNDWIRE_ACPI);
|
||||||
|
|
||||||
|
MODULE_LICENSE("Dual BSD/GPL");
|
||||||
|
MODULE_DESCRIPTION("Intel Soundwire ACPI helpers");
|
|
@ -286,6 +286,7 @@ config SND_SOC_SOF_INTEL_SOUNDWIRE
|
||||||
depends on ACPI && SOUNDWIRE
|
depends on ACPI && SOUNDWIRE
|
||||||
depends on !(SOUNDWIRE=m && SND_SOC_SOF_INTEL_SOUNDWIRE_LINK_BASELINE=y)
|
depends on !(SOUNDWIRE=m && SND_SOC_SOF_INTEL_SOUNDWIRE_LINK_BASELINE=y)
|
||||||
select SOUNDWIRE_INTEL
|
select SOUNDWIRE_INTEL
|
||||||
|
select SND_INTEL_SOUNDWIRE_ACPI
|
||||||
help
|
help
|
||||||
This adds support for SoundWire with Sound Open Firmware
|
This adds support for SoundWire with Sound Open Firmware
|
||||||
for Intel(R) platforms.
|
for Intel(R) platforms.
|
||||||
|
|
|
@ -1279,4 +1279,5 @@ MODULE_IMPORT_NS(SND_SOC_SOF_PCI_DEV);
|
||||||
MODULE_IMPORT_NS(SND_SOC_SOF_HDA_AUDIO_CODEC);
|
MODULE_IMPORT_NS(SND_SOC_SOF_HDA_AUDIO_CODEC);
|
||||||
MODULE_IMPORT_NS(SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
|
MODULE_IMPORT_NS(SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
|
||||||
MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA);
|
MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA);
|
||||||
|
MODULE_IMPORT_NS(SND_INTEL_SOUNDWIRE_ACPI);
|
||||||
MODULE_IMPORT_NS(SOUNDWIRE_INTEL_INIT);
|
MODULE_IMPORT_NS(SOUNDWIRE_INTEL_INIT);
|
||||||
|
|
Loading…
Reference in New Issue