| Message ID | 1300472672-13392-4-git-send-email-shawn.guo@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Sat, Mar 19, 2011 at 02:24:29AM +0800, Shawn Guo wrote: > This pointer to 'struct clk' is added to save the reference to 'clk' > which is dynamically created per dt clock node, so that clkdev API > like clk_get can work with dt based device driver. > > Signed-off-by: Shawn Guo <shawn.guo@linaro.org> > --- > include/linux/of.h | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/include/linux/of.h b/include/linux/of.h > index d9dd664..e621295 100644 > --- a/include/linux/of.h > +++ b/include/linux/of.h > @@ -54,6 +54,7 @@ struct device_node { > struct device_node *allnext; /* next in list of all nodes */ > struct proc_dir_entry *pde; /* this node's proc directory */ > struct kref kref; > + struct clk *clk; The dt clock support code can already translate from dt node to a clock provider, and each clock provider should provide a .get() hook to return the correct struct clk. of_clk_add_provider() inserts a mapping into the of_clk_providers() list, and clk_get() calls of_clk_get() which will process a devicenode->clk provider mapping. Adding a struct clk pointer to the device node isn't sufficient since a single clock provider node can provide multiple clock outputs. g.
diff --git a/include/linux/of.h b/include/linux/of.h index d9dd664..e621295 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -54,6 +54,7 @@ struct device_node { struct device_node *allnext; /* next in list of all nodes */ struct proc_dir_entry *pde; /* this node's proc directory */ struct kref kref; + struct clk *clk; unsigned long _flags; void *data; #if defined(CONFIG_SPARC)
This pointer to 'struct clk' is added to save the reference to 'clk' which is dynamically created per dt clock node, so that clkdev API like clk_get can work with dt based device driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> --- include/linux/of.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)