From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/plat-s5p/include/plat/pll.h | 153 +++++++++++++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 arch/arm/plat-s5p/include/plat/pll.h (limited to 'arch/arm/plat-s5p/include/plat/pll.h') diff --git a/arch/arm/plat-s5p/include/plat/pll.h b/arch/arm/plat-s5p/include/plat/pll.h new file mode 100644 index 00000000..bf28fade --- /dev/null +++ b/arch/arm/plat-s5p/include/plat/pll.h @@ -0,0 +1,153 @@ +/* arch/arm/plat-s5p/include/plat/pll.h + * + * Copyright (c) 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P PLL code + * + * Based on arch/arm/plat-s3c64xx/include/plat/pll.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#define PLL45XX_MDIV_MASK (0x3FF) +#define PLL45XX_PDIV_MASK (0x3F) +#define PLL45XX_SDIV_MASK (0x7) +#define PLL45XX_MDIV_SHIFT (16) +#define PLL45XX_PDIV_SHIFT (8) +#define PLL45XX_SDIV_SHIFT (0) + +#include + +enum pll45xx_type_t { + pll_4500, + pll_4502, + pll_4508 +}; + +static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con, + enum pll45xx_type_t pll_type) +{ + u32 mdiv, pdiv, sdiv; + u64 fvco = baseclk; + + mdiv = (pll_con >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK; + pdiv = (pll_con >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK; + sdiv = (pll_con >> PLL45XX_SDIV_SHIFT) & PLL45XX_SDIV_MASK; + + if (pll_type == pll_4508) + sdiv = sdiv - 1; + + fvco *= mdiv; + do_div(fvco, (pdiv << sdiv)); + + return (unsigned long)fvco; +} + +#define PLL46XX_KDIV_MASK (0xFFFF) +#define PLL4650C_KDIV_MASK (0xFFF) +#define PLL46XX_MDIV_MASK (0x1FF) +#define PLL46XX_PDIV_MASK (0x3F) +#define PLL46XX_SDIV_MASK (0x7) +#define PLL46XX_MDIV_SHIFT (16) +#define PLL46XX_PDIV_SHIFT (8) +#define PLL46XX_SDIV_SHIFT (0) + +enum pll46xx_type_t { + pll_4600, + pll_4650, + pll_4650c, +}; + +static inline unsigned long s5p_get_pll46xx(unsigned long baseclk, + u32 pll_con0, u32 pll_con1, + enum pll46xx_type_t pll_type) +{ + unsigned long result; + u32 mdiv, pdiv, sdiv, kdiv; + u64 tmp; + + mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & PLL46XX_MDIV_MASK; + pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK; + sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK; + kdiv = pll_con1 & PLL46XX_KDIV_MASK; + + if (pll_type == pll_4650c) + kdiv = pll_con1 & PLL4650C_KDIV_MASK; + else + kdiv = pll_con1 & PLL46XX_KDIV_MASK; + + tmp = baseclk; + + if (pll_type == pll_4600) { + tmp *= (mdiv << 16) + kdiv; + do_div(tmp, (pdiv << sdiv)); + result = tmp >> 16; + } else { + tmp *= (mdiv << 10) + kdiv; + do_div(tmp, (pdiv << sdiv)); + result = tmp >> 10; + } + + return result; +} + +#define PLL90XX_MDIV_MASK (0xFF) +#define PLL90XX_PDIV_MASK (0x3F) +#define PLL90XX_SDIV_MASK (0x7) +#define PLL90XX_KDIV_MASK (0xffff) +#define PLL90XX_MDIV_SHIFT (16) +#define PLL90XX_PDIV_SHIFT (8) +#define PLL90XX_SDIV_SHIFT (0) +#define PLL90XX_KDIV_SHIFT (0) + +static inline unsigned long s5p_get_pll90xx(unsigned long baseclk, + u32 pll_con, u32 pll_conk) +{ + unsigned long result; + u32 mdiv, pdiv, sdiv, kdiv; + u64 tmp; + + mdiv = (pll_con >> PLL90XX_MDIV_SHIFT) & PLL90XX_MDIV_MASK; + pdiv = (pll_con >> PLL90XX_PDIV_SHIFT) & PLL90XX_PDIV_MASK; + sdiv = (pll_con >> PLL90XX_SDIV_SHIFT) & PLL90XX_SDIV_MASK; + kdiv = pll_conk & PLL90XX_KDIV_MASK; + + /* We need to multiple baseclk by mdiv (the integer part) and kdiv + * which is in 2^16ths, so shift mdiv up (does not overflow) and + * add kdiv before multiplying. The use of tmp is to avoid any + * overflows before shifting bac down into result when multipling + * by the mdiv and kdiv pair. + */ + + tmp = baseclk; + tmp *= (mdiv << 16) + kdiv; + do_div(tmp, (pdiv << sdiv)); + result = tmp >> 16; + + return result; +} + +#define PLL65XX_MDIV_MASK (0x3FF) +#define PLL65XX_PDIV_MASK (0x3F) +#define PLL65XX_SDIV_MASK (0x7) +#define PLL65XX_MDIV_SHIFT (16) +#define PLL65XX_PDIV_SHIFT (8) +#define PLL65XX_SDIV_SHIFT (0) + +static inline unsigned long s5p_get_pll65xx(unsigned long baseclk, u32 pll_con) +{ + u32 mdiv, pdiv, sdiv; + u64 fvco = baseclk; + + mdiv = (pll_con >> PLL65XX_MDIV_SHIFT) & PLL65XX_MDIV_MASK; + pdiv = (pll_con >> PLL65XX_PDIV_SHIFT) & PLL65XX_PDIV_MASK; + sdiv = (pll_con >> PLL65XX_SDIV_SHIFT) & PLL65XX_SDIV_MASK; + + fvco *= mdiv; + do_div(fvco, (pdiv << sdiv)); + + return (unsigned long)fvco; +} -- cgit v1.2.3