Messages in this thread | | | Date | Sat, 14 May 2011 22:21:25 +0800 | Subject | Re: [PATCH 06/14] mfd: pxa-w1: MFD driver for PXA 1wire control + DS1WM chip | From | Haojian Zhuang <> |
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On Tue, Apr 26, 2011 at 5:48 PM, Samuel Ortiz <sameo@linux.intel.com> wrote: > Hi Haojian, > > On Mon, Apr 18, 2011 at 10:04:03PM +0800, Haojian Zhuang wrote: >> This driver provides registers and IRQ of PXA3xx chips to the ds1wm driver. > I see why this is needed, but I really think the ds1wm driver should be > converted to a regular platform device. The MFD driver below is just adding a > useless middle layer between your platform code and the ds1wm one. > I'm OK to use the regulator platform device for ds1wm driver except for one concern. ds1wm driver is designed for mfd cell driver. I need to update it as regulator platform driver first. cell->enable() / cell->disable() is used to enable clock for ds1wm driver. So I need to change the API from cell->enable/disable to clk_enable() / clk_disable().
But the key issue is that there's no common structure for clkdev. Now clkdev is only designed for deeply machine depend.
From my view is that we need a common structure for clkdev. Then mfd driver can get benefit from this. Some client driver can be written as regulator platform device. And mfd driver can use them seamless. What's your opinion?
Best Regards Haojian
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