[PATCH v2 16/22] fpga: intel: add fpga bridge platform driver for FME
From: Wu Hao <hidden>
Date: 2017-06-26 02:00:33
Also in:
linux-fpga, lkml
Subsystem:
fpga manager framework, the rest · Maintainers:
Moritz Fischer, Xu Yilun, Linus Torvalds
This patch adds fpga bridge platform driver for Intel FPGA Management Engine. It implements the enable_set call back for fpga bridge. Signed-off-by: Tim Whisonant <redacted> Signed-off-by: Enno Luebbers <redacted> Signed-off-by: Shiva Rao <redacted> Signed-off-by: Christopher Rauer <redacted> Signed-off-by: Wu Hao <redacted> --- drivers/fpga/Kconfig | 7 ++++ drivers/fpga/Makefile | 1 + drivers/fpga/intel-fpga-fme-br.c | 77 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 85 insertions(+) create mode 100644 drivers/fpga/intel-fpga-fme-br.c
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index 6f2f623..05e2a8e 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig@@ -158,6 +158,13 @@ config INTEL_FPGA_FME_MGR Say Y to enable FPGA Manager driver for Intel FPGA Management Engine. +config INTEL_FPGA_FME_BRIDGE + tristate "Intel FPGA FME Bridge Driver" + depends on INTEL_FPGA_FME && FPGA_BRIDGE + help + Say Y to enable FPGA Bridge driver for Intel FPGA Management + Engine. + endif endif # FPGA
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index d1d588b..131c105 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile@@ -32,6 +32,7 @@ obj-$(CONFIG_OF_FPGA_REGION) += of-fpga-region.o obj-$(CONFIG_INTEL_FPGA_PCI) += intel-fpga-pci.o obj-$(CONFIG_INTEL_FPGA_FME) += intel-fpga-fme.o obj-$(CONFIG_INTEL_FPGA_FME_MGR) += intel-fpga-fme-mgr.o +obj-$(CONFIG_INTEL_FPGA_FME_BRIDGE) += intel-fpga-fme-br.o intel-fpga-pci-objs := intel-pcie.o intel-feature-dev.o intel-fpga-fme-objs := intel-fme-main.o intel-fme-pr.o
diff --git a/drivers/fpga/intel-fpga-fme-br.c b/drivers/fpga/intel-fpga-fme-br.c
new file mode 100644
index 0000000..9b922d2
--- /dev/null
+++ b/drivers/fpga/intel-fpga-fme-br.c@@ -0,0 +1,77 @@ +/* + * FPGA Bridge Driver for Intel FPGA Management Engine (FME) + * + * Copyright (C) 2017 Intel Corporation, Inc. + * + * Authors: + * Wu Hao <hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> + * Joseph Grecco <joe.grecco-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> + * Enno Luebbers <enno.luebbers-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> + * Tim Whisonant <tim.whisonant-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> + * Ananda Ravuri <ananda.ravuri-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> + * Henry Mitchel <henry.mitchel-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> + * + * This work is licensed under the terms of the GNU GPL version 2. See + * the COPYING file in the top-level directory. + */ + +#include <linux/module.h> +#include <linux/fpga/fpga-bridge.h> + +#include "intel-feature-dev.h" +#include "intel-fme.h" + +static int fme_bridge_enable_set(struct fpga_bridge *bridge, bool enable) +{ + struct fme_br_pdata *pdata = bridge->priv; + int ret = 0; + + if (enable) + fpga_port_enable(pdata->port); + else + ret = fpga_port_disable(pdata->port); + + return ret; +} + +static const struct fpga_bridge_ops fme_bridge_ops = { + .enable_set = fme_bridge_enable_set, +}; + +static int fme_br_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct fme_br_pdata *pdata = dev_get_platdata(dev); + int ret; + + ret = fpga_bridge_register(dev, "Intel FPGA FME Bridge", + &fme_bridge_ops, pdata); + if (ret) + dev_err(dev, "unable to register FPGA Bridge\n"); + + dev_dbg(dev, "Intel FME FPGA Bridge probed\n"); + + return ret; +} + +static int fme_br_remove(struct platform_device *pdev) +{ + fpga_bridge_unregister(&pdev->dev); + + return 0; +} + +static struct platform_driver fme_br_driver = { + .driver = { + .name = INTEL_FPGA_FME_BRIDGE, + }, + .probe = fme_br_probe, + .remove = fme_br_remove, +}; + +module_platform_driver(fme_br_driver); + +MODULE_DESCRIPTION("FPGA Bridge for Intel FPGA Management Engine"); +MODULE_AUTHOR("Intel Corporation"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:intel-fpga-fme-bridge");
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1.8.3.1