> -----Original Message----- > From: Shawn Guo [mailto:shawn...@kernel.org] > Sent: 2015年7月27日 19:48 > To: Wang Shenwei-B38339 > Cc: ja...@lakedaemon.net; Huang Yongcai-B20788; > linux-kernel@vger.kernel.org; t...@linutronix.de; shawn....@linaro.org; > linux-arm-ker...@lists.infradead.org > Subject: Re: [PATCH v6 1/2] irqchip: imx-gpcv2: IMX GPCv2 driver for wakeup > sources > > On Mon, Jul 27, 2015 at 02:50:15PM +0000, Shenwei Wang wrote: > > The following structure is currently used in both drivers. The members > > "gpc_base/ wakeup_sources/enabled_irqs" are now shared to PM driver. > > And the macro IMR_NUM will be referred by both drivers too. > > > > struct imx_gpcv2_irq { > > spinlock_t lock; > > void __iomem *gpc_base; > > So this is the virtual base used by both irqchip and pm driver, and the lock > is for > register access protection, right? If so, we can define gpc as a syscon > device, > and access it from both drivers with regmap.
Regmap can be a solution too. > > u32 wakeup_sources[IMR_NUM]; > > This should be an irqchip internal data and exported to external users like pm > code with an interface like imx_gpcv2_get_wakeup_sources(). Okay. > > u32 enabled_irqs[IMR_NUM]; > I do not see how this is used in pm driver. > > > u32 cpu2wakeup; > > The only use of this in pm driver is to unmask interrupt #32 during > initialization. > Why cannot it be done in irqchip driver initialization? Right. This line should be moved to irqchip driver. Thanks. Shenwei > Shawn > > > };
