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clk: Inform the core about consumer devices

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We'd like to have a pointer to the device that's consuming a particular
clk in the clk framework so we can link the consumer to the clk provider
with a PM device link. Add a device argument to clk_hw_create_clk() for
this so it can be used in subsequent patches to add and remove the link.

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Stephen Boyd
2018-12-11 08:34:16 -08:00
parent 4472287a3b
commit efa850487a
3 changed files with 21 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/clk/clkdev.c
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@@ -51,7 +51,7 @@ static struct clk *__of_clk_get(struct device_node *np,
{
struct clk_hw *hw = of_clk_get_hw(np, index, con_id);
return clk_hw_create_clk(hw, dev_id, con_id);
return clk_hw_create_clk(NULL, hw, dev_id, con_id);
}
struct clk *of_clk_get(struct device_node *np, int index)
@@ -130,7 +130,8 @@ static struct clk_lookup *clk_find(const char *dev_id, const char *con_id)
return cl;
}
struct clk *clk_get_sys(const char *dev_id, const char *con_id)
static struct clk *__clk_get_sys(struct device *dev, const char *dev_id,
const char *con_id)
{
struct clk_lookup *cl;
struct clk *clk = NULL;
@@ -141,7 +142,7 @@ struct clk *clk_get_sys(const char *dev_id, const char *con_id)
if (!cl)
goto out;
clk = clk_hw_create_clk(cl->clk_hw, dev_id, con_id);
clk = clk_hw_create_clk(dev, cl->clk_hw, dev_id, con_id);
if (IS_ERR(clk))
cl = NULL;
out:
@@ -149,6 +150,11 @@ out:
return cl ? clk : ERR_PTR(-ENOENT);
}
struct clk *clk_get_sys(const char *dev_id, const char *con_id)
{
return __clk_get_sys(NULL, dev_id, con_id);
}
EXPORT_SYMBOL(clk_get_sys);
struct clk *clk_get(struct device *dev, const char *con_id)
@@ -159,10 +165,10 @@ struct clk *clk_get(struct device *dev, const char *con_id)
if (dev && dev->of_node) {
hw = of_clk_get_hw(dev->of_node, 0, con_id);
if (!IS_ERR(hw) || PTR_ERR(hw) == -EPROBE_DEFER)
return clk_hw_create_clk(hw, dev_id, con_id);
return clk_hw_create_clk(dev, hw, dev_id, con_id);
}
return clk_get_sys(dev_id, con_id);
return __clk_get_sys(dev, dev_id, con_id);
}
EXPORT_SYMBOL(clk_get);