From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com>,
Wolfram Sang <wsa@the-dreams.de>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Serge Semin <fancer.lancer@gmail.com>,
Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Rob Herring <robh+dt@kernel.org>,
linux-mips@vger.kernel.org, devicetree@vger.kernel.org,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 09/11] i2c: designware: Retrieve quirk flags as early as possible
Date: Wed, 27 May 2020 16:51:27 +0300 [thread overview]
Message-ID: <20200527135127.GA1634618@smile.fi.intel.com> (raw)
In-Reply-To: <20200527120111.5781-10-Sergey.Semin@baikalelectronics.ru>
On Wed, May 27, 2020 at 03:01:09PM +0300, Serge Semin wrote:
> Some platforms might need to activate the driver quirks at a very early
> probe stage. For instance, Baikal-T1 System I2C doesn't need to map the
> registers space as ones belong to the system controller. Instead it will
> request the syscon regmap from the parental DT node. In order to be able
> to do so let's retrieve the model flags right after the DW I2C private
> data is created.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: linux-mips@vger.kernel.org
> Cc: devicetree@vger.kernel.org
>
> ---
>
> Changelog v3:
> - This is a new patch, which has been created due to declining the
> glue-layer approach.
> ---
> drivers/i2c/busses/i2c-designware-platdrv.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
> index ca057aa9eac4..ad292de2d260 100644
> --- a/drivers/i2c/busses/i2c-designware-platdrv.c
> +++ b/drivers/i2c/busses/i2c-designware-platdrv.c
> @@ -124,6 +124,8 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
> if (!dev)
> return -ENOMEM;
>
> + dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev);
> +
> dev->base = devm_platform_ioremap_resource(pdev, 0);
> if (IS_ERR(dev->base))
> return PTR_ERR(dev->base);
> @@ -146,8 +148,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
>
> i2c_dw_acpi_adjust_bus_speed(&pdev->dev);
>
> - dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev);
> -
> if (pdev->dev.of_node)
> dw_i2c_of_configure(pdev);
>
> --
> 2.26.2
>
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2020-05-27 13:51 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-27 12:01 [PATCH v4 00/11] i2c: designeware: Add Baikal-T1 System I2C support Serge Semin
2020-05-27 12:01 ` [PATCH v4 01/11] dt-bindings: i2c: Convert DW I2C binding to DT schema Serge Semin
2020-05-27 12:01 ` [PATCH v4 02/11] dt-bindings: i2c: Discard i2c-slave flag from the DW I2C example Serge Semin
2020-05-27 17:12 ` Rob Herring
2020-05-27 17:18 ` Serge Semin
2020-05-27 17:56 ` Andy Shevchenko
2020-05-28 8:39 ` Serge Semin
2020-05-28 10:00 ` Andy Shevchenko
2020-05-27 12:01 ` [PATCH v4 03/11] dt-bindings: i2c: dw: Add Baikal-T1 SoC I2C controller Serge Semin
2020-05-27 12:01 ` [PATCH v4 04/11] i2c: designware: Use `-y` to build multi-object modules Serge Semin
2020-05-27 12:01 ` [PATCH v4 05/11] i2c: designware: slave: Set DW I2C core module dependency Serge Semin
2020-05-27 12:01 ` [PATCH v4 06/11] i2c: designware: Add Baytrail sem config DW I2C platform dependency Serge Semin
2020-05-27 13:42 ` Andy Shevchenko
2020-05-27 14:24 ` Serge Semin
2020-05-27 15:46 ` Andy Shevchenko
2020-05-27 16:00 ` Serge Semin
2020-05-27 16:43 ` Andy Shevchenko
2020-05-27 12:01 ` [PATCH v4 07/11] i2c: designware: Discard Cherry Trail model flag Serge Semin
2020-05-27 13:43 ` Andy Shevchenko
2020-05-27 14:29 ` Serge Semin
2020-05-27 15:48 ` Andy Shevchenko
2020-05-27 12:01 ` [PATCH v4 08/11] i2c: designware: Convert driver to using regmap API Serge Semin
2020-05-27 13:50 ` Andy Shevchenko
2020-05-27 14:39 ` Serge Semin
2020-05-27 12:01 ` [PATCH v4 09/11] i2c: designware: Retrieve quirk flags as early as possible Serge Semin
2020-05-27 13:51 ` Andy Shevchenko [this message]
2020-05-27 12:01 ` [PATCH v4 10/11] i2c: designware: Move reg-space remapping into a dedicated function Serge Semin
2020-05-27 13:58 ` Andy Shevchenko
2020-05-27 14:54 ` Serge Semin
2020-05-27 12:01 ` [PATCH v4 11/11] i2c: designware: Add Baikal-T1 System I2C support Serge Semin
2020-05-27 14:03 ` Andy Shevchenko
2020-05-27 15:04 ` Serge Semin
2020-05-27 15:52 ` Andy Shevchenko
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