From 5ebae801d960d46e39574cb83ec24ab44d1a6c2a Mon Sep 17 00:00:00 2001 From: Wu Hao Date: Sat, 30 Jun 2018 08:53:26 +0800 Subject: [PATCH] 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 Acked-by: Alan Tull Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman --- drivers/fpga/dfl-fme-mgr.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) 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); -- 2.7.4