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-rw-r--r--arch/arm/common/icst307.c64
-rw-r--r--arch/arm/common/icst525.c65
-rw-r--r--arch/arm/include/asm/hardware/icst307.h1
-rw-r--r--arch/arm/include/asm/hardware/icst525.h1
4 files changed, 0 insertions, 131 deletions
diff --git a/arch/arm/common/icst307.c b/arch/arm/common/icst307.c
index 2eebd960c01b..f78f5b5880c2 100644
--- a/arch/arm/common/icst307.c
+++ b/arch/arm/common/icst307.c
@@ -95,67 +95,3 @@ icst307_khz_to_vco(const struct icst_params *p, unsigned long freq)
95} 95}
96 96
97EXPORT_SYMBOL(icst307_khz_to_vco); 97EXPORT_SYMBOL(icst307_khz_to_vco);
98
99struct icst_vco
100icst307_ps_to_vco(const struct icst_params *p, unsigned long period)
101{
102 struct icst_vco vco = { .s = 1, .v = p->vd_max, .r = p->rd_max };
103 unsigned long f, ps;
104 unsigned int i = 0, rd, best = (unsigned int)-1;
105
106 ps = 1000000000UL / p->vco_max;
107
108 /*
109 * First, find the PLL output divisor such
110 * that the PLL output is within spec.
111 */
112 do {
113 f = period / s2div[idx2s[i]];
114
115 /*
116 * f must be between 6MHz and 200MHz (3.3 or 5V)
117 */
118 if (f >= ps && f < 1000000000UL / 6000 + 1)
119 break;
120 } while (i < ARRAY_SIZE(idx2s));
121
122 if (i >= ARRAY_SIZE(idx2s))
123 return vco;
124
125 vco.s = idx2s[i];
126
127 ps = 500000000UL / p->ref;
128
129 /*
130 * Now find the closest divisor combination
131 * which gives a PLL output of 'f'.
132 */
133 for (rd = p->rd_min; rd <= p->rd_max; rd++) {
134 unsigned long f_in_div, f_pll;
135 unsigned int vd;
136 int f_diff;
137
138 f_in_div = ps * rd;
139
140 vd = (f_in_div + f / 2) / f;
141 if (vd < p->vd_min || vd > p->vd_max)
142 continue;
143
144 f_pll = (f_in_div + vd / 2) / vd;
145 f_diff = f_pll - f;
146 if (f_diff < 0)
147 f_diff = -f_diff;
148
149 if ((unsigned)f_diff < best) {
150 vco.v = vd - 8;
151 vco.r = rd - 2;
152 if (f_diff == 0)
153 break;
154 best = f_diff;
155 }
156 }
157
158 return vco;
159}
160
161EXPORT_SYMBOL(icst307_ps_to_vco);
diff --git a/arch/arm/common/icst525.c b/arch/arm/common/icst525.c
index fd5c2e7ed176..eadf983ee434 100644
--- a/arch/arm/common/icst525.c
+++ b/arch/arm/common/icst525.c
@@ -93,68 +93,3 @@ icst525_khz_to_vco(const struct icst_params *p, unsigned long freq)
93} 93}
94 94
95EXPORT_SYMBOL(icst525_khz_to_vco); 95EXPORT_SYMBOL(icst525_khz_to_vco);
96
97struct icst_vco
98icst525_ps_to_vco(const struct icst_params *p, unsigned long period)
99{
100 struct icst_vco vco = { .s = 1, .v = p->vd_max, .r = p->rd_max };
101 unsigned long f, ps;
102 unsigned int i = 0, rd, best = (unsigned int)-1;
103
104 ps = 1000000000UL / p->vco_max;
105
106 /*
107 * First, find the PLL output divisor such
108 * that the PLL output is within spec.
109 */
110 do {
111 f = period / s2div[idx2s[i]];
112
113 /*
114 * f must be between 10MHz and
115 * 320MHz (5V) or 200MHz (3V)
116 */
117 if (f >= ps && f < 100000)
118 break;
119 } while (i < ARRAY_SIZE(idx2s));
120
121 if (i >= ARRAY_SIZE(idx2s))
122 return vco;
123
124 vco.s = idx2s[i];
125
126 ps = 500000000UL / p->ref;
127
128 /*
129 * Now find the closest divisor combination
130 * which gives a PLL output of 'f'.
131 */
132 for (rd = p->rd_min; rd <= p->rd_max; rd++) {
133 unsigned long f_in_div, f_pll;
134 unsigned int vd;
135 int f_diff;
136
137 f_in_div = ps * rd;
138
139 vd = (f_in_div + f / 2) / f;
140 if (vd < p->vd_min || vd > p->vd_max)
141 continue;
142
143 f_pll = (f_in_div + vd / 2) / vd;
144 f_diff = f_pll - f;
145 if (f_diff < 0)
146 f_diff = -f_diff;
147
148 if ((unsigned)f_diff < best) {
149 vco.v = vd - 8;
150 vco.r = rd - 2;
151 if (f_diff == 0)
152 break;
153 best = f_diff;
154 }
155 }
156
157 return vco;
158}
159
160EXPORT_SYMBOL(icst525_ps_to_vco);
diff --git a/arch/arm/include/asm/hardware/icst307.h b/arch/arm/include/asm/hardware/icst307.h
index 85932e902e99..8d0820a654db 100644
--- a/arch/arm/include/asm/hardware/icst307.h
+++ b/arch/arm/include/asm/hardware/icst307.h
@@ -20,6 +20,5 @@
20 20
21unsigned long icst307_khz(const struct icst_params *p, struct icst_vco vco); 21unsigned long icst307_khz(const struct icst_params *p, struct icst_vco vco);
22struct icst_vco icst307_khz_to_vco(const struct icst_params *p, unsigned long freq); 22struct icst_vco icst307_khz_to_vco(const struct icst_params *p, unsigned long freq);
23struct icst_vco icst307_ps_to_vco(const struct icst_params *p, unsigned long period);
24 23
25#endif 24#endif
diff --git a/arch/arm/include/asm/hardware/icst525.h b/arch/arm/include/asm/hardware/icst525.h
index 170deb2b605b..42a274e59fa2 100644
--- a/arch/arm/include/asm/hardware/icst525.h
+++ b/arch/arm/include/asm/hardware/icst525.h
@@ -18,6 +18,5 @@
18 18
19unsigned long icst525_khz(const struct icst_params *p, struct icst_vco vco); 19unsigned long icst525_khz(const struct icst_params *p, struct icst_vco vco);
20struct icst_vco icst525_khz_to_vco(const struct icst_params *p, unsigned long freq); 20struct icst_vco icst525_khz_to_vco(const struct icst_params *p, unsigned long freq);
21struct icst_vco icst525_ps_to_vco(const struct icst_params *p, unsigned long period);
22 21
23#endif 22#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-03 15:51:10 -0500