On 06/04/2012 12:22 PM, Jon Hunter wrote:
> In order to migrate the dmtimer driver to support device-tree I found that it
> was first necessary to clean-up the timer platform data. The goal of this
> series is to simplify the timer platform data structure from ...
>
> struct dmtimer_platform_data {
> int (*set_timer_src)(struct platform_device *pdev, int source);
> int timer_ip_version;
> u32 needs_manual_reset:1;
> bool reserved;
> bool loses_context;
> int (*get_context_loss_count)(struct device *dev);
> };
>
> to ...
>
> struct dmtimer_platform_data {
> int (*set_timer_src)(struct platform_device *pdev, int source);
> u32 timer_capability;
> };
>
> ... where timer_capability is a bit mask that indicates the timer features
> supported and uses the HWMOD timer capabilities flags described in
> plat/dmtimer.h. For OMAP2+ devices this allows us to read the timer
> capabilities from the HWMOD data and for OMAP1 devices the flags are simply
> populated by the timer initialisation code. Eventually, the aim is to read the
> timer capabilities from the device tree blob.
>
> This series includes some fixes as well as clean-up. For instance OMAP1
> dmtimer
> support is currently completely broken and so I have included a fix for this.
> If it is preferred to split the series into fixes and clean-up I can do that.
>
> This series is based upon the current linux-omap master branch (3.5-rc1). I
> have
> built both omap1 and omap2plus configurations as well as booted the respective
> kernels on the omap5912 OSK (omap1), OMAP3430 Beagle and OMAP4460 PANDA.
Forgot to add high-level changes for V2:
V2:
- Fix OMAP1 dmtimer support which currently broken. Requesting a timer
fails because clk_get() is called and this is not support for OMAP1
devices.
- Only use "set_timer_src" function pointer for OMAP1 devices.
Testing:
- On the above boards I have tested that I can request a timer and set
the parent clock.
Cheers
Jon
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