diff options
author | Domen Puncer <domen.puncer@telargo.com> | 2007-09-20 10:00:11 -0400 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2007-10-02 19:11:56 -0400 |
commit | 6f6682809b994fd9a61081fa0410df31481d5f7f (patch) | |
tree | b70e568099380de0671e50362dce8e7c77c9443d /arch/powerpc | |
parent | 21ccdd31e9c70f42b00d9ea152f6c4e0ff3f536e (diff) |
[POWERPC] clk.h interface for platforms
This provides an implementation of the <linux/clk.h> interface for
arch/powerpc using a set of function pointers in clk_functions.
Platforms that want to support this interface should fill
clk_functions and select CONFIG_PPC_CLOCK in Kconfig.
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/Kconfig | 4 | ||||
-rw-r--r-- | arch/powerpc/kernel/Makefile | 1 | ||||
-rw-r--r-- | arch/powerpc/kernel/clock.c | 82 | ||||
-rw-r--r-- | arch/powerpc/platforms/52xx/Kconfig | 1 |
4 files changed, 88 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 66a329534b5e..26126d27d756 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig | |||
@@ -663,3 +663,7 @@ config KEYS_COMPAT | |||
663 | default y | 663 | default y |
664 | 664 | ||
665 | source "crypto/Kconfig" | 665 | source "crypto/Kconfig" |
666 | |||
667 | config PPC_CLOCK | ||
668 | bool | ||
669 | default n | ||
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 967afc517d8f..b37165effb65 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile | |||
@@ -24,6 +24,7 @@ obj-$(CONFIG_PPC64) += vdso64/ | |||
24 | obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o | 24 | obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o |
25 | obj-$(CONFIG_PPC_970_NAP) += idle_power4.o | 25 | obj-$(CONFIG_PPC_970_NAP) += idle_power4.o |
26 | obj-$(CONFIG_PPC_OF) += of_device.o of_platform.o prom_parse.o | 26 | obj-$(CONFIG_PPC_OF) += of_device.o of_platform.o prom_parse.o |
27 | obj-$(CONFIG_PPC_CLOCK) += clock.o | ||
27 | procfs-$(CONFIG_PPC64) := proc_ppc64.o | 28 | procfs-$(CONFIG_PPC64) := proc_ppc64.o |
28 | obj-$(CONFIG_PROC_FS) += $(procfs-y) | 29 | obj-$(CONFIG_PROC_FS) += $(procfs-y) |
29 | rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI) := rtas_pci.o | 30 | rtaspci-$(CONFIG_PPC64)-$(CONFIG_PCI) := rtas_pci.o |
diff --git a/arch/powerpc/kernel/clock.c b/arch/powerpc/kernel/clock.c new file mode 100644 index 000000000000..ce668f545758 --- /dev/null +++ b/arch/powerpc/kernel/clock.c | |||
@@ -0,0 +1,82 @@ | |||
1 | /* | ||
2 | * Dummy clk implementations for powerpc. | ||
3 | * These need to be overridden in platform code. | ||
4 | */ | ||
5 | |||
6 | #include <linux/clk.h> | ||
7 | #include <linux/err.h> | ||
8 | #include <linux/errno.h> | ||
9 | #include <linux/module.h> | ||
10 | #include <asm/clk_interface.h> | ||
11 | |||
12 | struct clk_interface clk_functions; | ||
13 | |||
14 | struct clk *clk_get(struct device *dev, const char *id) | ||
15 | { | ||
16 | if (clk_functions.clk_get) | ||
17 | return clk_functions.clk_get(dev, id); | ||
18 | return ERR_PTR(-ENOSYS); | ||
19 | } | ||
20 | EXPORT_SYMBOL(clk_get); | ||
21 | |||
22 | void clk_put(struct clk *clk) | ||
23 | { | ||
24 | if (clk_functions.clk_put) | ||
25 | clk_functions.clk_put(clk); | ||
26 | } | ||
27 | EXPORT_SYMBOL(clk_put); | ||
28 | |||
29 | int clk_enable(struct clk *clk) | ||
30 | { | ||
31 | if (clk_functions.clk_enable) | ||
32 | return clk_functions.clk_enable(clk); | ||
33 | return -ENOSYS; | ||
34 | } | ||
35 | EXPORT_SYMBOL(clk_enable); | ||
36 | |||
37 | void clk_disable(struct clk *clk) | ||
38 | { | ||
39 | if (clk_functions.clk_disable) | ||
40 | clk_functions.clk_disable(clk); | ||
41 | } | ||
42 | EXPORT_SYMBOL(clk_disable); | ||
43 | |||
44 | unsigned long clk_get_rate(struct clk *clk) | ||
45 | { | ||
46 | if (clk_functions.clk_get_rate) | ||
47 | return clk_functions.clk_get_rate(clk); | ||
48 | return 0; | ||
49 | } | ||
50 | EXPORT_SYMBOL(clk_get_rate); | ||
51 | |||
52 | long clk_round_rate(struct clk *clk, unsigned long rate) | ||
53 | { | ||
54 | if (clk_functions.clk_round_rate) | ||
55 | return clk_functions.clk_round_rate(clk, rate); | ||
56 | return -ENOSYS; | ||
57 | } | ||
58 | EXPORT_SYMBOL(clk_round_rate); | ||
59 | |||
60 | int clk_set_rate(struct clk *clk, unsigned long rate) | ||
61 | { | ||
62 | if (clk_functions.clk_set_rate) | ||
63 | return clk_functions.clk_set_rate(clk, rate); | ||
64 | return -ENOSYS; | ||
65 | } | ||
66 | EXPORT_SYMBOL(clk_set_rate); | ||
67 | |||
68 | struct clk *clk_get_parent(struct clk *clk) | ||
69 | { | ||
70 | if (clk_functions.clk_get_parent) | ||
71 | return clk_functions.clk_get_parent(clk); | ||
72 | return ERR_PTR(-ENOSYS); | ||
73 | } | ||
74 | EXPORT_SYMBOL(clk_get_parent); | ||
75 | |||
76 | int clk_set_parent(struct clk *clk, struct clk *parent) | ||
77 | { | ||
78 | if (clk_functions.clk_set_parent) | ||
79 | return clk_functions.clk_set_parent(clk, parent); | ||
80 | return -ENOSYS; | ||
81 | } | ||
82 | EXPORT_SYMBOL(clk_set_parent); | ||
diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig index 9ddf251b192b..2938d4927b83 100644 --- a/arch/powerpc/platforms/52xx/Kconfig +++ b/arch/powerpc/platforms/52xx/Kconfig | |||
@@ -1,6 +1,7 @@ | |||
1 | config PPC_MPC52xx | 1 | config PPC_MPC52xx |
2 | bool | 2 | bool |
3 | select FSL_SOC | 3 | select FSL_SOC |
4 | select PPC_CLOCK | ||
4 | default n | 5 | default n |
5 | 6 | ||
6 | config PPC_MPC5200 | 7 | config PPC_MPC5200 |