[PATCH v7 19/29] fpga: dfl: fme-mgr: add compat_id support
From: Wu Hao <hidden>
Date: 2018-06-30 01:09:09
Also in:
linux-fpga, lkml
Subsystem:
fpga dfl drivers, fpga manager framework, the rest · Maintainers:
Xu Yilun, Moritz Fischer, Linus Torvalds
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 <redacted> Acked-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> --- v6: add Acked-by from Alan. v7: add Acked-by from Moritz. --- 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 u64 fme_mgr_status(struct fpga_manager *mgr) .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);
--
1.8.3.1