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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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a3891621d4
Since commit d492cc2573 ("driver core: device.h: make struct bus_type
a const *"), the driver core can properly handle constant struct
bus_type, move the s3c6410_subsys variable to be a constant structure as
well, placing it into read-only memory which can not be modified at
runtime.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240204-bus_cleanup-arm-v1-1-41d651dd8411@marliere.net
Link: https://lore.kernel.org/r/20240211-bus_cleanup-arm-v2-1-3de9e8af7cbd@marliere.net
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
81 lines
2 KiB
C
81 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* Copyright (c) 2004-2005 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* Header file for Samsung CPU support
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*/
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/* todo - fix when rmk changes iodescs to use `void __iomem *` */
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#ifndef __SAMSUNG_PLAT_CPU_H
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#define __SAMSUNG_PLAT_CPU_H
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extern unsigned long samsung_cpu_id;
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#define S3C6400_CPU_ID 0x36400000
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#define S3C6410_CPU_ID 0x36410000
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#define S3C64XX_CPU_MASK 0xFFFFF000
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#define S5PV210_CPU_ID 0x43110000
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#define S5PV210_CPU_MASK 0xFFFFF000
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#define IS_SAMSUNG_CPU(name, id, mask) \
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static inline int is_samsung_##name(void) \
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{ \
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return ((samsung_cpu_id & mask) == (id & mask)); \
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}
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IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK)
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IS_SAMSUNG_CPU(s3c6410, S3C6410_CPU_ID, S3C64XX_CPU_MASK)
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#if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
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# define soc_is_s3c6400() is_samsung_s3c6400()
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# define soc_is_s3c6410() is_samsung_s3c6410()
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# define soc_is_s3c64xx() (is_samsung_s3c6400() || is_samsung_s3c6410())
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#else
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# define soc_is_s3c6400() 0
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# define soc_is_s3c6410() 0
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# define soc_is_s3c64xx() 0
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#endif
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#ifndef MHZ
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#define MHZ (1000*1000)
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#endif
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#define print_mhz(m) ((m) / MHZ), (((m) / 1000) % 1000)
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/* forward declaration */
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struct s3c24xx_uart_resources;
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struct platform_device;
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struct s3c2410_uartcfg;
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struct map_desc;
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/* per-cpu initialisation function table. */
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struct cpu_table {
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unsigned long idcode;
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unsigned long idmask;
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void (*map_io)(void);
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void (*init_uarts)(struct s3c2410_uartcfg *cfg, int no);
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int (*init)(void);
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const char *name;
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};
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extern void s3c_init_cpu(unsigned long idcode,
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struct cpu_table *cpus, unsigned int cputab_size);
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/* core initialisation functions */
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extern void s3c64xx_init_cpu(void);
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extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);
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extern void s3c24xx_init_uartdevs(char *name,
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struct s3c24xx_uart_resources *res,
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struct s3c2410_uartcfg *cfg, int no);
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extern const struct bus_type s3c6410_subsys;
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#endif
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