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authorGeert Uytterhoeven <geert+renesas@glider.be>2015-08-04 14:28:02 +0200
committerSimon Horman <horms+renesas@verge.net.au>2015-08-12 10:31:26 +0900
commit752b5ed5f6998e118626feea7375782c4cf5aad6 (patch)
tree553132209bbbdf91664f0cdb58d1f6c3535e4d13 /include/linux/clk
parentd770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 (diff)
clk: shmobile: Add CPG/MSTP Clock Domain support
Add Clock Domain support to the Clock Pulse Generator (CPG) Module Stop (MSTP) Clocks driver using the generic PM Domain. This allows to power-manage the module clocks of SoC devices that are part of the CPG/MSTP Clock Domain using Runtime PM, or for system suspend/resume. SoC devices that are part of the CPG/MSTP Clock Domain and can be power-managed through an MSTP clock should be tagged in DT with a proper "power-domains" property. The CPG/MSTP Clock Domain code will scan such devices for clocks that are suitable for power-managing the device, by looking for a clock that is compatible with "renesas,cpg-mstp-clocks". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'include/linux/clk')
-rw-r--r--include/linux/clk/shmobile.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/clk/shmobile.h b/include/linux/clk/shmobile.h
index 63a8159c4e64..cb19cc1865ca 100644
--- a/include/linux/clk/shmobile.h
+++ b/include/linux/clk/shmobile.h
@@ -16,8 +16,20 @@
#include <linux/types.h>
+struct device;
+struct device_node;
+struct generic_pm_domain;
+
void r8a7778_clocks_init(u32 mode);
void r8a7779_clocks_init(u32 mode);
void rcar_gen2_clocks_init(u32 mode);
+#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
+void cpg_mstp_add_clk_domain(struct device_node *np);
+int cpg_mstp_attach_dev(struct generic_pm_domain *domain, struct device *dev);
+void cpg_mstp_detach_dev(struct generic_pm_domain *domain, struct device *dev);
+#else
+static inline void cpg_mstp_add_clk_domain(struct device_node *np) {}
+#endif
+
#endif