Hi Wu,
looks good. Minor nits inline.
On Sun, Jun 25, 2017 at 6:52 PM, Wu Hao <hao.wu@xxxxxxxxx> wrote:
> 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 <tim.whisonant@xxxxxxxxx>
> Signed-off-by: Enno Luebbers <enno.luebbers@xxxxxxxxx>
> Signed-off-by: Shiva Rao <shiva.rao@xxxxxxxxx>
> Signed-off-by: Christopher Rauer <christopher.rauer@xxxxxxxxx>
> Signed-off-by: Wu Hao <hao.wu@xxxxxxxxx>
Reviewed-by: Moritz Fischer <mdf@xxxxxxxxxx> (With fixes below)
> ---
> 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@xxxxxxxxx>
> + * Joseph Grecco <joe.grecco@xxxxxxxxx>
> + * Enno Luebbers <enno.luebbers@xxxxxxxxx>
> + * Tim Whisonant <tim.whisonant@xxxxxxxxx>
> + * Ananda Ravuri <ananda.ravuri@xxxxxxxxx>
> + * Henry Mitchel <henry.mitchel@xxxxxxxxx>
> + *
> + * This work is licensed under the terms of the GNU GPL version 2. See
> + * the COPYING file in the top-level directory.
Could replace that with SPDX-Licence-Identifier: GPL-2.0
> + */
> +
> +#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");
Mixed signals here. Did it work or did it not. Either return early,
in case of error. Or get rid of dev_dbg().
> +
> + 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");
> --
> 1.8.3.1
>
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Thanks,
Moritz
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