diff options
Diffstat (limited to 'arch/arm/plat-s3c/include/plat/cpu-freq.h')
| -rw-r--r-- | arch/arm/plat-s3c/include/plat/cpu-freq.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/arch/arm/plat-s3c/include/plat/cpu-freq.h b/arch/arm/plat-s3c/include/plat/cpu-freq.h deleted file mode 100644 index 94eb06a2ea5c..000000000000 --- a/arch/arm/plat-s3c/include/plat/cpu-freq.h +++ /dev/null @@ -1,145 +0,0 @@ -/* arch/arm/plat-s3c/include/plat/cpu-freq.h - * - * Copyright (c) 2006-2007 Simtec Electronics - * http://armlinux.simtec.co.uk/ - * Ben Dooks <ben@simtec.co.uk> - * - * S3C CPU frequency scaling support - driver and board - * - * 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. -*/ - -#include <linux/cpufreq.h> - -struct s3c_cpufreq_info; -struct s3c_cpufreq_board; -struct s3c_iotimings; - -/** - * struct s3c_freq - frequency information (mainly for core drivers) - * @fclk: The FCLK frequency in Hz. - * @armclk: The ARMCLK frequency in Hz. - * @hclk_tns: HCLK cycle time in 10ths of nano-seconds. - * @hclk: The HCLK frequency in Hz. - * @pclk: The PCLK frequency in Hz. - * - * This contains the frequency information about the current configuration - * mainly for the core drivers to ensure we do not end up passing about - * a large number of parameters. - * - * The @hclk_tns field is a useful cache for the parts of the drivers that - * need to calculate IO timings and suchlike. - */ -struct s3c_freq { - unsigned long fclk; - unsigned long armclk; - unsigned long hclk_tns; /* in 10ths of ns */ - unsigned long hclk; - unsigned long pclk; -}; - -/** - * struct s3c_cpufreq_freqs - s3c cpufreq notification information. - * @freqs: The cpufreq setting information. - * @old: The old clock settings. - * @new: The new clock settings. - * @pll_changing: Set if the PLL is changing. - * - * Wrapper 'struct cpufreq_freqs' so that any drivers receiving the - * notification can use this information that is not provided by just - * having the core frequency alone. - * - * The pll_changing flag is used to indicate if the PLL itself is - * being set during this change. This is important as the clocks - * will temporarily be set to the XTAL clock during this time, so - * drivers may want to close down their output during this time. - * - * Note, this is not being used by any current drivers and therefore - * may be removed in the future. - */ -struct s3c_cpufreq_freqs { - struct cpufreq_freqs freqs; - struct s3c_freq old; - struct s3c_freq new; - - unsigned int pll_changing:1; -}; - -#define to_s3c_cpufreq(_cf) container_of(_cf, struct s3c_cpufreq_freqs, freqs) - -/** - * struct s3c_clkdivs - clock divisor information - * @p_divisor: Divisor from FCLK to PCLK. - * @h_divisor: Divisor from FCLK to HCLK. - * @arm_divisor: Divisor from FCLK to ARMCLK (not all CPUs). - * @dvs: Non-zero if using DVS mode for ARMCLK. - * - * Divisor settings for the core clocks. - */ -struct s3c_clkdivs { - int p_divisor; - int h_divisor; - int arm_divisor; - unsigned char dvs; -}; - -#define PLLVAL(_m, _p, _s) (((_m) << 12) | ((_p) << 4) | (_s)) - -/** - * struct s3c_pllval - PLL value entry. - * @freq: The frequency for this entry in Hz. - * @pll_reg: The PLL register setting for this PLL value. - */ -struct s3c_pllval { - unsigned long freq; - unsigned long pll_reg; -}; - -/** - * struct s3c_cpufreq_board - per-board cpu frequency informatin - * @refresh: The SDRAM refresh period in nanoseconds. - * @auto_io: Set if the IO timing settings should be generated from the - * initialisation time hardware registers. - * @need_io: Set if the board has external IO on any of the chipselect - * lines that will require the hardware timing registers to be - * updated on a clock change. - * @max: The maxium frequency limits for the system. Any field that - * is left at zero will use the CPU's settings. - * - * This contains the board specific settings that affect how the CPU - * drivers chose settings. These include the memory refresh and IO - * timing information. - * - * Registration depends on the driver being used, the ARMCLK only - * implementation does not currently need this but the older style - * driver requires this to be available. - */ -struct s3c_cpufreq_board { - unsigned int refresh; - unsigned int auto_io:1; /* automatically init io timings. */ - unsigned int need_io:1; /* set if needs io timing support. */ - - /* any non-zero field in here is taken as an upper limit. */ - struct s3c_freq max; /* frequency limits */ -}; - -/* Things depending on frequency scaling. */ -#ifdef CONFIG_CPU_FREQ_S3C -#define __init_or_cpufreq -#else -#define __init_or_cpufreq __init -#endif - -/* Board functions */ - -#ifdef CONFIG_CPU_FREQ_S3C -extern int s3c_cpufreq_setboard(struct s3c_cpufreq_board *board); -#else - -static inline int s3c_cpufreq_setboard(struct s3c_cpufreq_board *board) -{ - return 0; -} -#endif /* CONFIG_CPU_FREQ_S3C */ |