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authorGeert Uytterhoeven <geert+renesas@glider.be>2016-03-04 17:03:46 +0100
committerGeert Uytterhoeven <geert+renesas@glider.be>2016-04-20 09:17:07 +0200
commit2066390ad47b374f3d35075a32325b47d15bf735 (patch)
tree83ae9d2bbda1d30485e2ffe852914fca58115fc6 /include/linux/clk
parent12524e348bcb2189a8cf43829e90256f7e7d4f3d (diff)
downloadop-kernel-dev-2066390ad47b374f3d35075a32325b47d15bf735.zip
op-kernel-dev-2066390ad47b374f3d35075a32325b47d15bf735.tar.gz
clk: renesas: cpg-mssr: Export cpg_mssr_{at,de}tach_dev()
The R-Car SYSC PM Domain driver has to power manage devices in power areas using clocks. To reuse code and to share knowledge of clocks suitable for power management, this is ideally done through the existing cpg_mssr_attach_dev() and cpg_mssr_detach_dev() callbacks. Hence these callbacks can no longer rely on their "domain" parameter pointing to the CPG/MSSR Clock Domain. To handle this, keep a pointer to the clock domain in a static variable. cpg_mssr_attach_dev() has to support probe deferral, as the R-Car SYSC PM Domain may be initialized, and devices may be added to it, before the CPG/MSSR Clock Domain is initialized. Dummy callbacks are provided for the case where CPG/MSTP support is not included, so the rcar-sysc driver won't have to care about this. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'include/linux/clk')
-rw-r--r--include/linux/clk/renesas.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/clk/renesas.h b/include/linux/clk/renesas.h
index ab57a29..ba6fa41 100644
--- a/include/linux/clk/renesas.h
+++ b/include/linux/clk/renesas.h
@@ -33,4 +33,11 @@ void cpg_mstp_detach_dev(struct generic_pm_domain *unused, struct device *dev);
#define cpg_mstp_detach_dev NULL
#endif
+#ifdef CONFIG_CLK_RENESAS_CPG_MSSR
+int cpg_mssr_attach_dev(struct generic_pm_domain *unused, struct device *dev);
+void cpg_mssr_detach_dev(struct generic_pm_domain *unused, struct device *dev);
+#else
+#define cpg_mssr_attach_dev NULL
+#define cpg_mssr_detach_dev NULL
+#endif
#endif
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