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authorWu Hao <hao.wu@intel.com>2018-06-30 00:53:26 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-15 11:55:46 (GMT)
commit5ebae801d960d46e39574cb83ec24ab44d1a6c2a (patch)
tree738588147e3e82501c52666f2a666c6471c32fef /drivers/fpga
parentaf275ec6160ba68714371cfe0575f9aa478ce02f (diff)
fpga: dfl: fme-mgr: add compat_id support
This patch adds compat_id support to fme manager driver, it reads the ID from the hardware register. And it could be used for compatibility check before partial reconfiguration. Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga')
-rw-r--r--drivers/fpga/dfl-fme-mgr.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/fpga/dfl-fme-mgr.c b/drivers/fpga/dfl-fme-mgr.c
index df843b5..b5ef405 100644
--- a/drivers/fpga/dfl-fme-mgr.c
+++ b/drivers/fpga/dfl-fme-mgr.c
@@ -272,9 +272,17 @@ static const struct fpga_manager_ops fme_mgr_ops = {
.status = fme_mgr_status,
};
+static void fme_mgr_get_compat_id(void __iomem *fme_pr,
+ struct fpga_compat_id *id)
+{
+ id->id_l = readq(fme_pr + FME_PR_INTFC_ID_L);
+ id->id_h = readq(fme_pr + FME_PR_INTFC_ID_H);
+}
+
static int fme_mgr_probe(struct platform_device *pdev)
{
struct dfl_fme_mgr_pdata *pdata = dev_get_platdata(&pdev->dev);
+ struct fpga_compat_id *compat_id;
struct device *dev = &pdev->dev;
struct fme_mgr_priv *priv;
struct fpga_manager *mgr;
@@ -295,11 +303,18 @@ static int fme_mgr_probe(struct platform_device *pdev)
return PTR_ERR(priv->ioaddr);
}
+ compat_id = devm_kzalloc(dev, sizeof(*compat_id), GFP_KERNEL);
+ if (!compat_id)
+ return -ENOMEM;
+
+ fme_mgr_get_compat_id(priv->ioaddr, compat_id);
+
mgr = fpga_mgr_create(dev, "DFL FME FPGA Manager",
&fme_mgr_ops, priv);
if (!mgr)
return -ENOMEM;
+ mgr->compat_id = compat_id;
platform_set_drvdata(pdev, mgr);
ret = fpga_mgr_register(mgr);

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