linux-kernel - Re: [RFC v1 4/6] platform: x86: Add generic Intel IPC driver

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Message-ID: <CAHp75VftGZRoT6aFMD8Mi1GQ=846gwSWTsE-HU00+ijuTtgo4g@mail.gmail.com>
Date:   Fri, 18 Aug 2017 15:38:56 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc:     "x86@...nel.org" <x86@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Zha Qipeng <qipeng.zha@...el.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "dvhart@...radead.org" <dvhart@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Shevchenko <andy@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Sathyanarayanan Kuppuswamy Natarajan <sathyaosid@...il.com>
Subject: Re: [RFC v1 4/6] platform: x86: Add generic Intel IPC driver

On Tue, Aug 1, 2017 at 9:13 PM,
<sathyanarayanan.kuppuswamy@...ux.intel.com> wrote:
> From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
>
> Currently intel_scu_ipc.c, intel_pmc_ipc.c and intel_punit_ipc.c
> redundantly implements the same IPC features and has lot of code
> duplication between them. This driver addresses this issue by grouping
> the common IPC functionalities under the same driver.
>
> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
> ---
>  arch/x86/include/asm/intel_ipc_dev.h | 148 ++++++++++++

No, it should go under include/linux/platform_data/x86/

> +/*
> + * intel_ipc_dev.h: IPC class device header file

No file names in the top of files.

> + *
> + * (C) Copyright 2017 Intel Corporation
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; version 2
> + * of the License.
> + *
> + */

> +struct intel_ipc_dev_cfg {
> +       void __iomem *base;
> +       void __iomem *wrbuf_reg;
> +       void __iomem *rbuf_reg;
> +       void __iomem *sptr_reg;
> +       void __iomem *dptr_reg;
> +       void __iomem *status_reg;
> +       void __iomem *cmd_reg;

No, you have to switch to regmap instead.

> +       int mode;
> +       int irq;
> +       int irqflags;
> +       int chan_type;
> +       bool use_msi;
> +};


-- 
With Best Regards,
Andy Shevchenko