git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a0e8a52 KK |
1 | /* arch/arm/plat-s5p/include/plat/pll.h |
| 2 | * | |
| 3 | * Copyright (c) 2009 Samsung Electronics Co., Ltd. | |
| 4 | * http://www.samsung.com/ | |
| 5 | * | |
| 6 | * S5P PLL code | |
| 7 | * | |
| 8 | * Based on arch/arm/plat-s3c64xx/include/plat/pll.h | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify | |
| 11 | * it under the terms of the GNU General Public License version 2 as | |
| 12 | * published by the Free Software Foundation. | |
| 13 | */ | |
| 14 | ||
| 15 | #define PLL45XX_MDIV_MASK (0x3FF) | |
| 16 | #define PLL45XX_PDIV_MASK (0x3F) | |
| 17 | #define PLL45XX_SDIV_MASK (0x7) | |
| 18 | #define PLL45XX_MDIV_SHIFT (16) | |
| 19 | #define PLL45XX_PDIV_SHIFT (8) | |
| 20 | #define PLL45XX_SDIV_SHIFT (0) | |
| 21 | ||
| 22 | #include <asm/div64.h> | |
| 23 | ||
| 24 | enum pll45xx_type_t { | |
| 25 | pll_4500, | |
| 26 | pll_4502, | |
| 27 | pll_4508 | |
| 28 | }; | |
| 29 | ||
| 30 | static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con, | |
| 31 | enum pll45xx_type_t pll_type) | |
| 32 | { | |
| 33 | u32 mdiv, pdiv, sdiv; | |
| 34 | u64 fvco = baseclk; | |
| 35 | ||
| 36 | mdiv = (pll_con >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK; | |
| 37 | pdiv = (pll_con >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK; | |
| 38 | sdiv = (pll_con >> PLL45XX_SDIV_SHIFT) & PLL45XX_SDIV_MASK; | |
| 39 | ||
| 40 | if (pll_type == pll_4508) | |
| 41 | sdiv = sdiv - 1; | |
| 42 | ||
| 43 | fvco *= mdiv; | |
| 44 | do_div(fvco, (pdiv << sdiv)); | |
| 45 | ||
| 46 | return (unsigned long)fvco; | |
| 47 | } | |
| 48 | ||
| c8bef140 CY |
49 | #define PLL46XX_KDIV_MASK (0xFFFF) |
| 50 | #define PLL46XX_MDIV_MASK (0x1FF) | |
| 51 | #define PLL46XX_PDIV_MASK (0x3F) | |
| 52 | #define PLL46XX_SDIV_MASK (0x7) | |
| 53 | #define PLL46XX_MDIV_SHIFT (16) | |
| 54 | #define PLL46XX_PDIV_SHIFT (8) | |
| 55 | #define PLL46XX_SDIV_SHIFT (0) | |
| 56 | ||
| 57 | enum pll46xx_type_t { | |
| 58 | pll_4600, | |
| 59 | pll_4650, | |
| 60 | }; | |
| 61 | ||
| 62 | static inline unsigned long s5p_get_pll46xx(unsigned long baseclk, | |
| 63 | u32 pll_con0, u32 pll_con1, | |
| 64 | enum pll46xx_type_t pll_type) | |
| 65 | { | |
| 66 | unsigned long result; | |
| 67 | u32 mdiv, pdiv, sdiv, kdiv; | |
| 68 | u64 tmp; | |
| 69 | ||
| 70 | mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & PLL46XX_MDIV_MASK; | |
| 71 | pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK; | |
| 72 | sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK; | |
| 73 | kdiv = pll_con1 & PLL46XX_KDIV_MASK; | |
| 74 | ||
| 75 | tmp = baseclk; | |
| 76 | ||
| 77 | if (pll_type == pll_4600) { | |
| 78 | tmp *= (mdiv << 16) + kdiv; | |
| 79 | do_div(tmp, (pdiv << sdiv)); | |
| 80 | result = tmp >> 16; | |
| 81 | } else { | |
| 82 | tmp *= (mdiv << 10) + kdiv; | |
| 83 | do_div(tmp, (pdiv << sdiv)); | |
| 84 | result = tmp >> 10; | |
| 85 | } | |
| 86 | ||
| 87 | return result; | |
| 88 | } | |
| 89 | ||
| 1a0e8a52 KK |
90 | #define PLL90XX_MDIV_MASK (0xFF) |
| 91 | #define PLL90XX_PDIV_MASK (0x3F) | |
| 92 | #define PLL90XX_SDIV_MASK (0x7) | |
| 93 | #define PLL90XX_KDIV_MASK (0xffff) | |
| 94 | #define PLL90XX_MDIV_SHIFT (16) | |
| 95 | #define PLL90XX_PDIV_SHIFT (8) | |
| 96 | #define PLL90XX_SDIV_SHIFT (0) | |
| 97 | #define PLL90XX_KDIV_SHIFT (0) | |
| 98 | ||
| 99 | static inline unsigned long s5p_get_pll90xx(unsigned long baseclk, | |
| 100 | u32 pll_con, u32 pll_conk) | |
| 101 | { | |
| 102 | unsigned long result; | |
| 103 | u32 mdiv, pdiv, sdiv, kdiv; | |
| 104 | u64 tmp; | |
| 105 | ||
| 106 | mdiv = (pll_con >> PLL90XX_MDIV_SHIFT) & PLL90XX_MDIV_MASK; | |
| 107 | pdiv = (pll_con >> PLL90XX_PDIV_SHIFT) & PLL90XX_PDIV_MASK; | |
| 108 | sdiv = (pll_con >> PLL90XX_SDIV_SHIFT) & PLL90XX_SDIV_MASK; | |
| 109 | kdiv = pll_conk & PLL90XX_KDIV_MASK; | |
| 110 | ||
| 111 | /* We need to multiple baseclk by mdiv (the integer part) and kdiv | |
| 112 | * which is in 2^16ths, so shift mdiv up (does not overflow) and | |
| 113 | * add kdiv before multiplying. The use of tmp is to avoid any | |
| 114 | * overflows before shifting bac down into result when multipling | |
| 115 | * by the mdiv and kdiv pair. | |
| 116 | */ | |
| 117 | ||
| 118 | tmp = baseclk; | |
| 119 | tmp *= (mdiv << 16) + kdiv; | |
| 120 | do_div(tmp, (pdiv << sdiv)); | |
| 121 | result = tmp >> 16; | |
| 122 | ||
| 123 | return result; | |
| 124 | } | |
| a443a637 TA |
125 | |
| 126 | #define PLL65XX_MDIV_MASK (0x3FF) | |
| 127 | #define PLL65XX_PDIV_MASK (0x3F) | |
| 128 | #define PLL65XX_SDIV_MASK (0x7) | |
| 129 | #define PLL65XX_MDIV_SHIFT (16) | |
| 130 | #define PLL65XX_PDIV_SHIFT (8) | |
| 131 | #define PLL65XX_SDIV_SHIFT (0) | |
| 132 | ||
| 133 | static inline unsigned long s5p_get_pll65xx(unsigned long baseclk, u32 pll_con) | |
| 134 | { | |
| 135 | u32 mdiv, pdiv, sdiv; | |
| 136 | u64 fvco = baseclk; | |
| 137 | ||
| 138 | mdiv = (pll_con >> PLL65XX_MDIV_SHIFT) & PLL65XX_MDIV_MASK; | |
| 139 | pdiv = (pll_con >> PLL65XX_PDIV_SHIFT) & PLL65XX_PDIV_MASK; | |
| 140 | sdiv = (pll_con >> PLL65XX_SDIV_SHIFT) & PLL65XX_SDIV_MASK; | |
| 141 | ||
| 142 | fvco *= mdiv; | |
| 143 | do_div(fvco, (pdiv << sdiv)); | |
| 144 | ||
| 145 | return (unsigned long)fvco; | |
| 146 | } |