diff options
author | Arnd Bergmann <arnd@arndb.de> | 2020-08-06 20:20:52 +0200 |
---|---|---|
committer | Krzysztof Kozlowski <krzk@kernel.org> | 2020-08-20 17:52:05 +0200 |
commit | 81b11a6a09964cfea4c525d22548790a1d92d38f (patch) | |
tree | 2f1caee50d56b318114f3e6929ca1923cabc8f2d /arch/arm/plat-samsung/include | |
parent | 01e93a173935d11061721c3eb90a54f80719b54f (diff) |
ARM: s3c: remove cpufreq header dependencies
The cpufreq drivers are split between the machine directory
and the drivers/cpufreq directory. In order to share header
files after we convert s3c to multiplatform, those headers
have to live in a different global location.
Move them to linux/soc/samsung/ in lack of a better place.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20200806182059.2431-35-krzk@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'arch/arm/plat-samsung/include')
-rw-r--r-- | arch/arm/plat-samsung/include/plat/cpu-freq-core.h | 287 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/cpu-freq.h | 141 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/cpu.h | 9 |
3 files changed, 0 insertions, 437 deletions
diff --git a/arch/arm/plat-samsung/include/plat/cpu-freq-core.h b/arch/arm/plat-samsung/include/plat/cpu-freq-core.h deleted file mode 100644 index 2c7cf2665634..000000000000 --- a/arch/arm/plat-samsung/include/plat/cpu-freq-core.h +++ /dev/null @@ -1,287 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Copyright (c) 2006-2009 Simtec Electronics - * http://armlinux.simtec.co.uk/ - * Ben Dooks <ben@simtec.co.uk> - * - * S3C CPU frequency scaling support - core support - */ - -#include <plat/cpu-freq.h> - -struct seq_file; - -#define MAX_BANKS (8) -#define S3C2412_MAX_IO (8) - -/** - * struct s3c2410_iobank_timing - IO bank timings for S3C2410 style timings - * @bankcon: The cached version of settings in this structure. - * @tacp: - * @tacs: Time from address valid to nCS asserted. - * @tcos: Time from nCS asserted to nOE or nWE asserted. - * @tacc: Time that nOE or nWE is asserted. - * @tcoh: Time nCS is held after nOE or nWE are released. - * @tcah: Time address is held for after - * @nwait_en: Whether nWAIT is enabled for this bank. - * - * This structure represents the IO timings for a S3C2410 style IO bank - * used by the CPU frequency support if it needs to change the settings - * of the IO. - */ -struct s3c2410_iobank_timing { - unsigned long bankcon; - unsigned int tacp; - unsigned int tacs; - unsigned int tcos; - unsigned int tacc; - unsigned int tcoh; /* nCS hold after nOE/nWE */ - unsigned int tcah; /* Address hold after nCS */ - unsigned char nwait_en; /* nWait enabled for bank. */ -}; - -/** - * struct s3c2412_iobank_timing - io timings for PL092 (S3C2412) style IO - * @idcy: The idle cycle time between transactions. - * @wstrd: nCS release to end of read cycle. - * @wstwr: nCS release to end of write cycle. - * @wstoen: nCS assertion to nOE assertion time. - * @wstwen: nCS assertion to nWE assertion time. - * @wstbrd: Burst ready delay. - * @smbidcyr: Register cache for smbidcyr value. - * @smbwstrd: Register cache for smbwstrd value. - * @smbwstwr: Register cache for smbwstwr value. - * @smbwstoen: Register cache for smbwstoen value. - * @smbwstwen: Register cache for smbwstwen value. - * @smbwstbrd: Register cache for smbwstbrd value. - * - * Timing information for a IO bank on an S3C2412 or similar system which - * uses a PL093 block. - */ -struct s3c2412_iobank_timing { - unsigned int idcy; - unsigned int wstrd; - unsigned int wstwr; - unsigned int wstoen; - unsigned int wstwen; - unsigned int wstbrd; - - /* register cache */ - unsigned char smbidcyr; - unsigned char smbwstrd; - unsigned char smbwstwr; - unsigned char smbwstoen; - unsigned char smbwstwen; - unsigned char smbwstbrd; -}; - -union s3c_iobank { - struct s3c2410_iobank_timing *io_2410; - struct s3c2412_iobank_timing *io_2412; -}; - -/** - * struct s3c_iotimings - Chip IO timings holder - * @bank: The timings for each IO bank. - */ -struct s3c_iotimings { - union s3c_iobank bank[MAX_BANKS]; -}; - -/** - * struct s3c_plltab - PLL table information. - * @vals: List of PLL values. - * @size: Size of the PLL table @vals. - */ -struct s3c_plltab { - struct s3c_pllval *vals; - int size; -}; - -/** - * struct s3c_cpufreq_config - current cpu frequency configuration - * @freq: The current settings for the core clocks. - * @max: Maxium settings, derived from core, board and user settings. - * @pll: The PLL table entry for the current PLL settings. - * @divs: The divisor settings for the core clocks. - * @info: The current core driver information. - * @board: The information for the board we are running on. - * @lock_pll: Set if the PLL settings cannot be changed. - * - * This is for the core drivers that need to know information about - * the current settings and values. It should not be needed by any - * device drivers. -*/ -struct s3c_cpufreq_config { - struct s3c_freq freq; - struct s3c_freq max; - struct clk *mpll; - struct cpufreq_frequency_table pll; - struct s3c_clkdivs divs; - struct s3c_cpufreq_info *info; /* for core, not drivers */ - struct s3c_cpufreq_board *board; - - unsigned int lock_pll:1; -}; - -/** - * struct s3c_cpufreq_info - Information for the CPU frequency driver. - * @name: The name of this implementation. - * @max: The maximum frequencies for the system. - * @latency: Transition latency to give to cpufreq. - * @locktime_m: The lock-time in uS for the MPLL. - * @locktime_u: The lock-time in uS for the UPLL. - * @locttime_bits: The number of bits each LOCKTIME field. - * @need_pll: Set if this driver needs to change the PLL values to achieve - * any frequency changes. This is really only need by devices like the - * S3C2410 where there is no or limited divider between the PLL and the - * ARMCLK. - * @get_iotiming: Get the current IO timing data, mainly for use at start. - * @set_iotiming: Update the IO timings from the cached copies calculated - * from the @calc_iotiming entry when changing the frequency. - * @calc_iotiming: Calculate and update the cached copies of the IO timings - * from the newly calculated frequencies. - * @calc_freqtable: Calculate (fill in) the given frequency table from the - * current frequency configuration. If the table passed in is NULL, - * then the return is the number of elements to be filled for allocation - * of the table. - * @set_refresh: Set the memory refresh configuration. - * @set_fvco: Set the PLL frequencies. - * @set_divs: Update the clock divisors. - * @calc_divs: Calculate the clock divisors. - */ -struct s3c_cpufreq_info { - const char *name; - struct s3c_freq max; - - unsigned int latency; - - unsigned int locktime_m; - unsigned int locktime_u; - unsigned char locktime_bits; - - unsigned int need_pll:1; - - /* driver routines */ - - int (*get_iotiming)(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *timings); - - void (*set_iotiming)(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *timings); - - int (*calc_iotiming)(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *timings); - - int (*calc_freqtable)(struct s3c_cpufreq_config *cfg, - struct cpufreq_frequency_table *t, - size_t table_size); - - void (*debug_io_show)(struct seq_file *seq, - struct s3c_cpufreq_config *cfg, - union s3c_iobank *iob); - - void (*set_refresh)(struct s3c_cpufreq_config *cfg); - void (*set_fvco)(struct s3c_cpufreq_config *cfg); - void (*set_divs)(struct s3c_cpufreq_config *cfg); - int (*calc_divs)(struct s3c_cpufreq_config *cfg); -}; - -extern int s3c_cpufreq_register(struct s3c_cpufreq_info *info); - -extern int s3c_plltab_register(struct cpufreq_frequency_table *plls, - unsigned int plls_no); - -/* exports and utilities for debugfs */ -extern struct s3c_cpufreq_config *s3c_cpufreq_getconfig(void); -extern struct s3c_iotimings *s3c_cpufreq_getiotimings(void); - -#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS -#define s3c_cpufreq_debugfs_call(x) x -#else -#define s3c_cpufreq_debugfs_call(x) NULL -#endif - -/* Useful utility functions. */ - -extern struct clk *s3c_cpufreq_clk_get(struct device *, const char *); - -/* S3C2410 and compatible exported functions */ - -extern void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg); -extern void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg); - -#ifdef CONFIG_S3C2410_IOTIMING -extern void s3c2410_iotiming_debugfs(struct seq_file *seq, - struct s3c_cpufreq_config *cfg, - union s3c_iobank *iob); - -extern int s3c2410_iotiming_calc(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *iot); - -extern int s3c2410_iotiming_get(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *timings); - -extern void s3c2410_iotiming_set(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *iot); -#else -#define s3c2410_iotiming_debugfs NULL -#define s3c2410_iotiming_calc NULL -#define s3c2410_iotiming_get NULL -#define s3c2410_iotiming_set NULL -#endif /* CONFIG_S3C2410_IOTIMING */ - -/* S3C2412 compatible routines */ - -#ifdef CONFIG_S3C2412_IOTIMING -extern void s3c2412_iotiming_debugfs(struct seq_file *seq, - struct s3c_cpufreq_config *cfg, - union s3c_iobank *iob); - -extern int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *timings); - -extern int s3c2412_iotiming_calc(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *iot); - -extern void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg, - struct s3c_iotimings *iot); -#else -#define s3c2412_iotiming_debugfs NULL -#define s3c2412_iotiming_calc NULL -#define s3c2412_iotiming_get NULL -#define s3c2412_iotiming_set NULL -#endif /* CONFIG_S3C2412_IOTIMING */ - -#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_DEBUG -#define s3c_freq_dbg(x...) printk(KERN_INFO x) -#else -#define s3c_freq_dbg(x...) do { if (0) printk(x); } while (0) -#endif /* CONFIG_ARM_S3C24XX_CPUFREQ_DEBUG */ - -#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_IODEBUG -#define s3c_freq_iodbg(x...) printk(KERN_INFO x) -#else -#define s3c_freq_iodbg(x...) do { if (0) printk(x); } while (0) -#endif /* CONFIG_ARM_S3C24XX_CPUFREQ_IODEBUG */ - -static inline int s3c_cpufreq_addfreq(struct cpufreq_frequency_table *table, - int index, size_t table_size, - unsigned int freq) -{ - if (index < 0) - return index; - - if (table) { - if (index >= table_size) - return -ENOMEM; - - s3c_freq_dbg("%s: { %d = %u kHz }\n", - __func__, index, freq); - - table[index].driver_data = index; - table[index].frequency = freq; - } - - return index + 1; -} diff --git a/arch/arm/plat-samsung/include/plat/cpu-freq.h b/arch/arm/plat-samsung/include/plat/cpu-freq.h deleted file mode 100644 index 558892bcf9b6..000000000000 --- a/arch/arm/plat-samsung/include/plat/cpu-freq.h +++ /dev/null @@ -1,141 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * 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 - */ - -#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_ARM_S3C_CPUFREQ -#define __init_or_cpufreq -#else -#define __init_or_cpufreq __init -#endif - -/* Board functions */ - -#ifdef CONFIG_ARM_S3C_CPUFREQ -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_ARM_S3C_CPUFREQ */ diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h index 93ecd7127831..20ff98d05c53 100644 --- a/arch/arm/plat-samsung/include/plat/cpu.h +++ b/arch/arm/plat-samsung/include/plat/cpu.h @@ -123,15 +123,6 @@ extern struct syscore_ops s3c2412_pm_syscore_ops; extern struct syscore_ops s3c2416_pm_syscore_ops; extern struct syscore_ops s3c244x_pm_syscore_ops; -/* system device subsystems */ - -extern struct bus_type s3c2410_subsys; -extern struct bus_type s3c2410a_subsys; -extern struct bus_type s3c2412_subsys; -extern struct bus_type s3c2416_subsys; -extern struct bus_type s3c2440_subsys; -extern struct bus_type s3c2442_subsys; -extern struct bus_type s3c2443_subsys; extern struct bus_type s3c6410_subsys; #endif |