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    Subject[PATCH v3 4/5] ASoC: Intel: Add DMI quirk table to soc_intel_is_byt_cr()
    Date
    Some Bay Trail systems:
    1. Use a non CR version of the Bay Trail SoC
    2. Contain at least 6 interrupt resources so that the
    platform_get_resource(pdev, IORESOURCE_IRQ, 5) check to workaround
    non CR systems which list their IPC IRQ at index 0 despite being
    non CR does not work
    3. Despite 1. and 2. still have their IPC IRQ at index 0 rather then 5

    Add a DMI quirk table to check for the few known models with this issue,
    so that the right IPC IRQ index is used on these systems.

    Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
    Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
    Signed-off-by: Hans de Goede <hdegoede@redhat.com>
    ---
    sound/soc/intel/common/soc-intel-quirks.h | 25 +++++++++++++++++++++++
    1 file changed, 25 insertions(+)

    diff --git a/sound/soc/intel/common/soc-intel-quirks.h b/sound/soc/intel/common/soc-intel-quirks.h
    index b07df3059926..a93987ab7f4d 100644
    --- a/sound/soc/intel/common/soc-intel-quirks.h
    +++ b/sound/soc/intel/common/soc-intel-quirks.h
    @@ -11,6 +11,7 @@

    #if IS_ENABLED(CONFIG_X86)

    +#include <linux/dmi.h>
    #include <asm/cpu_device_id.h>
    #include <asm/intel-family.h>
    #include <asm/iosf_mbi.h>
    @@ -38,12 +39,36 @@ SOC_INTEL_IS_CPU(cml, KABYLAKE_L);

    static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
    {
    + /*
    + * List of systems which:
    + * 1. Use a non CR version of the Bay Trail SoC
    + * 2. Contain at least 6 interrupt resources so that the
    + * platform_get_resource(pdev, IORESOURCE_IRQ, 5) check below
    + * succeeds
    + * 3. Despite 1. and 2. still have their IPC IRQ at index 0 rather then 5
    + *
    + * This needs to be here so that it can be shared between the SST and
    + * SOF drivers. We rely on the compiler to optimize this out in files
    + * where soc_intel_is_byt_cr is not used.
    + */
    + static const struct dmi_system_id force_bytcr_table[] = {
    + { /* Lenovo Yoga Tablet 2 series */
    + .matches = {
    + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
    + DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"),
    + },
    + },
    + {}
    + };
    struct device *dev = &pdev->dev;
    int status = 0;

    if (!soc_intel_is_byt())
    return false;

    + if (dmi_check_system(force_bytcr_table))
    + return true;
    +
    if (iosf_mbi_available()) {
    u32 bios_status;

    --
    2.28.0
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