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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-11 13:08:33 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-11 13:08:33 -0400
commitd3d07d941fd80c173b6d690ded00ee5fb8302e06 (patch)
treef1a82c956e393df9933c8544bb564ef1735384ee /arch/sh/kernel/cpu/sh4a/clock-shx3.c
parent6cd8e300b49332eb9eeda45816c711c198d31505 (diff)
parent54ff328b46e58568c4b3350c2fa3223ef862e5a4 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (266 commits) sh: Tie sparseirq in to Kconfig. sh: Wire up sys_rt_tgsigqueueinfo. sh: Fix sys_pwritev() syscall table entry for sh32. sh: Fix sh4a llsc-based cmpxchg() sh: sh7724: Add JPU support sh: sh7724: INTC setting update sh: sh7722 clock framework rewrite sh: sh7366 clock framework rewrite sh: sh7343 clock framework rewrite sh: sh7724 clock framework rewrite V3 sh: sh7723 clock framework rewrite V2 sh: add enable()/disable()/set_rate() to div6 code sh: add AP325RXA mode pin configuration sh: add Migo-R mode pin configuration sh: sh7722 mode pin definitions sh: sh7724 mode pin comments sh: sh7723 mode pin V2 sh: rework mode pin code sh: clock div6 helper code sh: clock div4 frequency table offset fix ...
Diffstat (limited to 'arch/sh/kernel/cpu/sh4a/clock-shx3.c')
-rw-r--r--arch/sh/kernel/cpu/sh4a/clock-shx3.c41
1 files changed, 17 insertions, 24 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/clock-shx3.c b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
index c630b29e06a8..23c27d32d982 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
@@ -40,30 +40,30 @@ static struct clk_ops shx3_master_clk_ops = {
40 .init = master_clk_init, 40 .init = master_clk_init,
41}; 41};
42 42
43static void module_clk_recalc(struct clk *clk) 43static unsigned long module_clk_recalc(struct clk *clk)
44{ 44{
45 int idx = ((ctrl_inl(FRQCR) >> PFC_POS) & PFC_MSK); 45 int idx = ((ctrl_inl(FRQCR) >> PFC_POS) & PFC_MSK);
46 clk->rate = clk->parent->rate / pfc_divisors[idx]; 46 return clk->parent->rate / pfc_divisors[idx];
47} 47}
48 48
49static struct clk_ops shx3_module_clk_ops = { 49static struct clk_ops shx3_module_clk_ops = {
50 .recalc = module_clk_recalc, 50 .recalc = module_clk_recalc,
51}; 51};
52 52
53static void bus_clk_recalc(struct clk *clk) 53static unsigned long bus_clk_recalc(struct clk *clk)
54{ 54{
55 int idx = ((ctrl_inl(FRQCR) >> BFC_POS) & BFC_MSK); 55 int idx = ((ctrl_inl(FRQCR) >> BFC_POS) & BFC_MSK);
56 clk->rate = clk->parent->rate / bfc_divisors[idx]; 56 return clk->parent->rate / bfc_divisors[idx];
57} 57}
58 58
59static struct clk_ops shx3_bus_clk_ops = { 59static struct clk_ops shx3_bus_clk_ops = {
60 .recalc = bus_clk_recalc, 60 .recalc = bus_clk_recalc,
61}; 61};
62 62
63static void cpu_clk_recalc(struct clk *clk) 63static unsigned long cpu_clk_recalc(struct clk *clk)
64{ 64{
65 int idx = ((ctrl_inl(FRQCR) >> IFC_POS) & IFC_MSK); 65 int idx = ((ctrl_inl(FRQCR) >> IFC_POS) & IFC_MSK);
66 clk->rate = clk->parent->rate / ifc_divisors[idx]; 66 return clk->parent->rate / ifc_divisors[idx];
67} 67}
68 68
69static struct clk_ops shx3_cpu_clk_ops = { 69static struct clk_ops shx3_cpu_clk_ops = {
@@ -83,10 +83,10 @@ void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
83 *ops = shx3_clk_ops[idx]; 83 *ops = shx3_clk_ops[idx];
84} 84}
85 85
86static void shyway_clk_recalc(struct clk *clk) 86static unsigned long shyway_clk_recalc(struct clk *clk)
87{ 87{
88 int idx = ((ctrl_inl(FRQCR) >> CFC_POS) & CFC_MSK); 88 int idx = ((ctrl_inl(FRQCR) >> CFC_POS) & CFC_MSK);
89 clk->rate = clk->parent->rate / cfc_divisors[idx]; 89 return clk->parent->rate / cfc_divisors[idx];
90} 90}
91 91
92static struct clk_ops shx3_shyway_clk_ops = { 92static struct clk_ops shx3_shyway_clk_ops = {
@@ -95,7 +95,7 @@ static struct clk_ops shx3_shyway_clk_ops = {
95 95
96static struct clk shx3_shyway_clk = { 96static struct clk shx3_shyway_clk = {
97 .name = "shyway_clk", 97 .name = "shyway_clk",
98 .flags = CLK_ALWAYS_ENABLED, 98 .flags = CLK_ENABLE_ON_INIT,
99 .ops = &shx3_shyway_clk_ops, 99 .ops = &shx3_shyway_clk_ops,
100}; 100};
101 101
@@ -107,29 +107,22 @@ static struct clk *shx3_onchip_clocks[] = {
107 &shx3_shyway_clk, 107 &shx3_shyway_clk,
108}; 108};
109 109
110static int __init shx3_clk_init(void) 110int __init arch_clk_init(void)
111{ 111{
112 struct clk *clk = clk_get(NULL, "master_clk"); 112 struct clk *clk;
113 int i; 113 int i, ret = 0;
114 114
115 cpg_clk_init();
116
117 clk = clk_get(NULL, "master_clk");
115 for (i = 0; i < ARRAY_SIZE(shx3_onchip_clocks); i++) { 118 for (i = 0; i < ARRAY_SIZE(shx3_onchip_clocks); i++) {
116 struct clk *clkp = shx3_onchip_clocks[i]; 119 struct clk *clkp = shx3_onchip_clocks[i];
117 120
118 clkp->parent = clk; 121 clkp->parent = clk;
119 clk_register(clkp); 122 ret |= clk_register(clkp);
120 clk_enable(clkp);
121 } 123 }
122 124
123 /*
124 * Now that we have the rest of the clocks registered, we need to
125 * force the parent clock to propagate so that these clocks will
126 * automatically figure out their rate. We cheat by handing the
127 * parent clock its current rate and forcing child propagation.
128 */
129 clk_set_rate(clk, clk_get_rate(clk));
130
131 clk_put(clk); 125 clk_put(clk);
132 126
133 return 0; 127 return ret;
134} 128}
135arch_initcall(shx3_clk_init);