Commit 5ebae801 authored by Wu Hao's avatar Wu Hao Committed by Greg Kroah-Hartman
Browse files

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: default avatarWu Hao <hao.wu@intel.com>
Acked-by: default avatarAlan Tull <atull@kernel.org>
Acked-by: default avatarMoritz Fischer <mdf@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent af275ec6

drivers/fpga/dfl-fme-mgr.c

+15 −0
Original line number Diff line number Diff line
@@ -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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