linux-kernel - Re: [PATCH v4 6/6] staging: fpga manager: add driver for altera socfpga manager

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Date:	Thu, 11 Dec 2014 17:14:24 -0600
From:	atull <atull@...nsource.altera.com>
To:	Steffen Trumtrar <s.trumtrar@...gutronix.de>
CC:	<gregkh@...uxfoundation.org>, <jgunthorpe@...idianresearch.com>,
	<hpa@...or.com>, <monstr@...str.eu>, <michal.simek@...inx.com>,
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	<yvanderv@...nsource.altera.com>
Subject: Re: [PATCH v4 6/6] staging: fpga manager: add driver for altera
 socfpga manager

On Wed, 10 Dec 2014, Steffen Trumtrar wrote:

> > +static inline void altera_fpga_reg_set_bitsl(struct altera_fpga_priv *priv,
> > +					     u32 offset, u32 bits)
> > +{
> > +	u32 val;
> > +
> > +	val = altera_fpga_reg_readl(priv, offset);
> > +	val |= bits;
> > +	altera_fpga_reg_writel(priv, offset, val);
> > +}
> > +
> > +static inline void altera_fpga_reg_clr_bitsl(struct altera_fpga_priv *priv,
> > +					     u32 offset, u32 bits)
> > +{
> > +	u32 val;
> > +
> > +	val = altera_fpga_reg_readl(priv, offset);
> > +	val &= ~bits;
> > +	altera_fpga_reg_writel(priv, offset, val);
> > +}
> > +
> 
> Why do you need these? Can't you just use regmap_mmio?

I would like to do that as an improvement as time allows, not now.

> > +	ret = request_irq(priv->irq, altera_fpga_isr, 0, "altera-fpga-mgr",
> > +			  priv);
> > +	if (ret < 0)
> > +		goto err_dispose_irq;
> 
> devm_request_irq

Will do, thanks.

Alan
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