clk_get_sys / clk_get can now find clocks from device-tree. If a DT clock is found, an entry is added to the clk_lookup list also for subsequent searches.
Signed-off-by: Tero Kristo <t-kri...@ti.com> Cc: Russell King <li...@arm.linux.org.uk> --- drivers/clk/clkdev.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index 442a313..e39f082 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -93,6 +93,18 @@ struct clk *of_clk_get_by_name(struct device_node *np, const char *name) EXPORT_SYMBOL(of_clk_get_by_name); #endif +/** + * clkdev_add_nolock - add lookup entry for a clock + * @cl: pointer to new clock lookup entry + * + * Non-locking version, used internally by clk_find() to add DT based + * clock lookup entries. + */ +static void clkdev_add_nolock(struct clk_lookup *cl) +{ + list_add_tail(&cl->node, &clocks); +} + /* * Find the correct struct clk for the device and connection ID. * We do slightly fuzzy matching here: @@ -106,6 +118,9 @@ static struct clk_lookup *clk_find(const char *dev_id, const char *con_id) { struct clk_lookup *p, *cl = NULL; int match, best_found = 0, best_possible = 0; + struct device_node *node; + struct clk *clk; + struct of_phandle_args clkspec; if (dev_id) best_possible += 2; @@ -133,6 +148,23 @@ static struct clk_lookup *clk_find(const char *dev_id, const char *con_id) break; } } + + if (cl) + return cl; + + /* If clock was not found, attempt to look-up from DT */ + node = of_find_node_by_name(NULL, con_id); + + clkspec.np = node; + + clk = of_clk_get_from_provider(&clkspec); + + if (!IS_ERR(clk)) { + /* We found a clock, add node to clkdev */ + cl = clkdev_alloc(clk, con_id, dev_id); + clkdev_add_nolock(cl); + } + return cl; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html