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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>
hifive-unleashed-5.1
Wu Hao 2018-06-30 08:53:26 +08:00 committed by Greg Kroah-Hartman
parent af275ec616
commit 5ebae801d9
1 changed files with 15 additions and 0 deletions
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15
drivers/fpga/dfl-fme-mgr.c
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@ -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);