linux-kernel - Re: [PATCH v5 2/3] spi: spi-altera-dfl: support n5010 feature revision

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Date:   Thu, 29 Jul 2021 13:05:25 -0700
From:   Moritz Fischer <mdf@...nel.org>
To:     Tom Rix <trix@...hat.com>
Cc:     Martin Hundebøll <martin@...nix.com>,
        Wu Hao <hao.wu@...el.com>, Moritz Fischer <mdf@...nel.org>,
        Xu Yilun <yilun.xu@...el.com>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Mark Brown <broonie@...nel.org>,
        Martin Hundebøll <mhu@...icom.dk>,
        linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hwmon@...r.kernel.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH v5 2/3] spi: spi-altera-dfl: support n5010 feature
 revision

On Fri, Jul 16, 2021 at 01:44:45PM -0700, Tom Rix wrote:
> 
> On 7/16/21 6:54 AM, Martin Hundebøll wrote:
> > From: Martin Hundebøll <mhu@...icom.dk>
> > 
> > The Max10 BMC on the Silicom n5010 PAC is slightly different than the
> > existing BMCs, so use a dedicated feature revision detect it.
> > 
> > Signed-off-by: Martin Hundebøll <mhu@...icom.dk>
> > Reviewed-by: Moritz Fischer <mdf@...nel.org>
> > ---
> > 
> > Changes since v4:
> >   * Moved spi board_info structure from global/static scope
> >     to function/stack scope
> > 
> > Changes since v3:
> >   * Changed "BMC's" to "BMCs"
> >   * Added Moritz' Reviewed-by
> > 
> > Changes since v2:
> >   * None
> > 
> > Changes since v1:
> >   * use feature revision from struct dfl_device instead of reading it
> >     from io-mem
> > 
> >   drivers/spi/spi-altera-dfl.c | 21 ++++++++++++---------
> >   1 file changed, 12 insertions(+), 9 deletions(-)
> > 
> > diff --git a/drivers/spi/spi-altera-dfl.c b/drivers/spi/spi-altera-dfl.c
> > index 39a3e1a032e0..44fc9ee13fc7 100644
> > --- a/drivers/spi/spi-altera-dfl.c
> > +++ b/drivers/spi/spi-altera-dfl.c
> > @@ -104,13 +104,6 @@ static const struct regmap_config indirect_regbus_cfg = {
> >   	.reg_read = indirect_bus_reg_read,
> >   };
> > -static struct spi_board_info m10_bmc_info = {
> > -	.modalias = "m10-d5005",
> > -	.max_speed_hz = 12500000,
> > -	.bus_num = 0,
> > -	.chip_select = 0,
> > -};
> > -
> >   static void config_spi_master(void __iomem *base, struct spi_master *master)
> >   {
> >   	u64 v;
> > @@ -130,6 +123,7 @@ static void config_spi_master(void __iomem *base, struct spi_master *master)
> >   static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
> >   {
> > +	struct spi_board_info board_info = { 0 };
> >   	struct device *dev = &dfl_dev->dev;
> >   	struct spi_master *master;
> >   	struct altera_spi *hw;
> > @@ -170,9 +164,18 @@ static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
> >   		goto exit;
> >   	}
> > -	if (!spi_new_device(master,  &m10_bmc_info)) {
> > +	if (dfl_dev->revision == FME_FEATURE_REV_MAX10_SPI_N5010)
> > +		strscpy(board_info.modalias, "m10-n5010", SPI_NAME_SIZE);
> > +	else
> > +		strscpy(board_info.modalias, "m10-d5005", SPI_NAME_SIZE);
> > +
> > +	board_info.max_speed_hz = 12500000;
> > +	board_info.bus_num = 0;
> > +	board_info.chip_select = 0;
> > +
> > +	if (!spi_new_device(master, &board_info)) {
> >   		dev_err(dev, "%s failed to create SPI device: %s\n",
> > -			__func__, m10_bmc_info.modalias);
> > +			__func__, board_info.modalias);
> >   	}
> 
> Looks good to me.
> 
> Reviewed-by: Tom Rix <trix@...hat.com>
> 
> >   	return 0;
> 
Applied to for-next,

Thanks