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SubjectRe: [PATCH 2/5] irqchip/irq-imx-gpcv2: Share reg offset calculation code
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Am Mittwoch, den 05.12.2018, 23:31 -0800 schrieb Andrey Smirnov:
> Move identical offset calculation code into a small helper function
> and make use of it in the rest of the code.
>
> > Cc: Thomas Gleixner <tglx@linutronix.de>
> > Cc: Jason Cooper <jason@lakedaemon.net>
> > Cc: Marc Zyngier <marc.zyngier@arm.com>
> Cc: cphealy@gmail.com
> Cc: l.stach@pengutronix.de
> > Cc: Leonard Crestez <leonard.crestez@nxp.com>
> > Cc: "A.s. Dong" <aisheng.dong@nxp.com>
> > Cc: Richard Zhu <hongxing.zhu@nxp.com>
> Cc: linux-imx@nxp.com
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>

Nice cleanup!

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

> ---
>  drivers/irqchip/irq-imx-gpcv2.c | 18 ++++++++++--------
>  1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/irqchip/irq-imx-gpcv2.c b/drivers/irqchip/irq-imx-gpcv2.c
> index cbed00319315..b262ba8b2652 100644
> --- a/drivers/irqchip/irq-imx-gpcv2.c
> +++ b/drivers/irqchip/irq-imx-gpcv2.c
> @@ -28,6 +28,11 @@ struct gpcv2_irqchip_data {
>  
>  static struct gpcv2_irqchip_data *imx_gpcv2_instance;
>  
> +static void __iomem *gpcv2_idx_to_reg(struct gpcv2_irqchip_data *cd, int i)
> +{
> > + return cd->gpc_base + cd->cpu2wakeup + i * 4;
> +}
> +
>  static int gpcv2_wakeup_source_save(void)
>  {
> >   struct gpcv2_irqchip_data *cd;
> @@ -39,7 +44,7 @@ static int gpcv2_wakeup_source_save(void)
> >   return 0;
>  
> >   for (i = 0; i < IMR_NUM; i++) {
> > - reg = cd->gpc_base + cd->cpu2wakeup + i * 4;
> > + reg = gpcv2_idx_to_reg(cd, i);
> >   cd->saved_irq_mask[i] = readl_relaxed(reg);
> >   writel_relaxed(cd->wakeup_sources[i], reg);
> >   }
> @@ -50,17 +55,14 @@ static int gpcv2_wakeup_source_save(void)
>  static void gpcv2_wakeup_source_restore(void)
>  {
> >   struct gpcv2_irqchip_data *cd;
> > - void __iomem *reg;
> >   int i;
>  
> >   cd = imx_gpcv2_instance;
> >   if (!cd)
> >   return;
>  
> > - for (i = 0; i < IMR_NUM; i++) {
> > - reg = cd->gpc_base + cd->cpu2wakeup + i * 4;
> > - writel_relaxed(cd->saved_irq_mask[i], reg);
> > - }
> > + for (i = 0; i < IMR_NUM; i++)
> > + writel_relaxed(cd->saved_irq_mask[i], gpcv2_idx_to_reg(cd, i));
>  }
>  
>  static struct syscore_ops imx_gpcv2_syscore_ops = {
> @@ -97,7 +99,7 @@ static void imx_gpcv2_irq_unmask(struct irq_data *d)
> >   u32 val;
>  
> >   raw_spin_lock(&cd->rlock);
> > - reg = cd->gpc_base + cd->cpu2wakeup + d->hwirq / 32 * 4;
> > + reg = gpcv2_idx_to_reg(cd, d->hwirq / 32);
> >   val = readl_relaxed(reg);
> >   val &= ~(1 << d->hwirq % 32);
> >   writel_relaxed(val, reg);
> @@ -113,7 +115,7 @@ static void imx_gpcv2_irq_mask(struct irq_data *d)
> >   u32 val;
>  
> >   raw_spin_lock(&cd->rlock);
> > - reg = cd->gpc_base + cd->cpu2wakeup + d->hwirq / 32 * 4;
> > + reg = gpcv2_idx_to_reg(cd, d->hwirq / 32);
> >   val = readl_relaxed(reg);
> >   val |= 1 << (d->hwirq % 32);
> >   writel_relaxed(val, reg);

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