Doug / smarc-fsl-linux-kernel

Download as
Browse Code ยป

Commit 5fedd0afd661cf2d387a6eb1b0df78ddbc0c9086

Authored by Ian Molton
1 parent 67a6e80ede
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

[ARM] clocklib: Allow dynamic alias creation 

This patch allows dynamic creation of clock aliases in order to
make it possible to have platform independent clock names for use in
device drivers.

Signed-off-by: Ian Molton <spyro@f2s.com>

Showing 2 changed files with 30 additions and 0 deletions Side-by-side Diff

arch/arm/mach-pxa/clock.c
Diff comments   View file @ 5fedd0a
... ... @@ -125,4 +125,29 @@
125 125 list_add(&clks[i].node, &clocks);
126 126 mutex_unlock(&clocks_mutex);
127 127 }
  128 +
  129 +int clk_add_alias(char *alias, struct device *alias_dev, char *id,
  130 + struct device *dev)
  131 +{
  132 + struct clk *r = clk_lookup(dev, id);
  133 + struct clk *new;
  134 +
  135 + if (!r)
  136 + return -ENODEV;
  137 +
  138 + new = kzalloc(sizeof(struct clk), GFP_KERNEL);
  139 +
  140 + if (!new)
  141 + return -ENOMEM;
  142 +
  143 + new->name = alias;
  144 + new->dev = alias_dev;
  145 + new->other = r;
  146 +
  147 + mutex_lock(&clocks_mutex);
  148 + list_add(&new->node, &clocks);
  149 + mutex_unlock(&clocks_mutex);
  150 +
  151 + return 0;
  152 +}
arch/arm/mach-pxa/clock.h
Diff comments   View file @ 5fedd0a
  1 +#include <linux/list.h>
  2 +
1 3 struct clk;
2 4  
3 5 struct clkops {
... ... @@ -86,4 +88,6 @@
86 88 #endif
87 89  
88 90 void clks_register(struct clk *clks, size_t num);
  91 +int clk_add_alias(char *alias, struct device *alias_dev, char *id,
  92 + struct device *dev);