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    Subject[PATCH v2 03/13] intel_gna: read hardware info in the driver
    Date
    From: Tomasz Jankowski <tomasz1.jankowski@intel.com>

    Get the hardware information from register MMIO_IBUFFS

    Signed-off-by: Tomasz Jankowski <tomasz1.jankowski@intel.com>
    Tested-by: Savo Novakovic <savox.novakovic@intel.com>
    Co-developed-by: Jianxun Zhang <jianxun.zhang@linux.intel.com>
    Signed-off-by: Jianxun Zhang <jianxun.zhang@linux.intel.com>
    Co-developed-by: Maciej Kwapulinski <maciej.kwapulinski@linux.intel.com>
    Signed-off-by: Maciej Kwapulinski <maciej.kwapulinski@linux.intel.com>
    ---
    drivers/misc/intel/gna/gna_device.c | 5 +++++
    drivers/misc/intel/gna/gna_device.h | 5 +++++
    2 files changed, 10 insertions(+)

    diff --git a/drivers/misc/intel/gna/gna_device.c b/drivers/misc/intel/gna/gna_device.c
    index 431113297879..6bac481b2247 100644
    --- a/drivers/misc/intel/gna/gna_device.c
    +++ b/drivers/misc/intel/gna/gna_device.c
    @@ -12,12 +12,17 @@
    static void gna_dev_init(struct gna_private *gna_priv, struct pci_dev *pcidev,
    const struct pci_device_id *pci_id)
    {
    + u32 bld_reg;
    +
    pci_set_drvdata(pcidev, gna_priv);

    gna_priv->parent = &pcidev->dev;
    gna_priv->pdev = pcidev;
    gna_priv->info = *(struct gna_drv_info *)pci_id->driver_data;
    gna_priv->drv_priv = &gna_drv_priv;
    +
    + bld_reg = gna_reg_read(gna_priv->bar0_base, GNA_MMIO_IBUFFS);
    + gna_priv->hw_info.in_buf_s = bld_reg & GENMASK(7, 0);
    }

    int gna_probe(struct pci_dev *pcidev, const struct pci_device_id *pci_id)
    diff --git a/drivers/misc/intel/gna/gna_device.h b/drivers/misc/intel/gna/gna_device.h
    index 39dc03d53feb..7704eeda90f6 100644
    --- a/drivers/misc/intel/gna/gna_device.h
    +++ b/drivers/misc/intel/gna/gna_device.h
    @@ -23,6 +23,10 @@ struct gna_drv_info {
    struct gna_desc_info desc_info;
    };

    +struct gna_hw_info {
    + u8 in_buf_s;
    +};
    +
    struct gna_private {
    struct gna_driver_private *drv_priv;

    @@ -33,6 +37,7 @@ struct gna_private {
    /* device related resources */
    void __iomem *bar0_base;
    struct gna_drv_info info;
    + struct gna_hw_info hw_info;
    };

    int gna_probe(struct pci_dev *dev, const struct pci_device_id *id);
    --
    2.28.0
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