Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2014 Imagination Technologies Ltd. */ #ifndef __ASM_CDMM_H #define __ASM_CDMM_H #include <linux/device.h> #include <linux/mod_devicetable.h> /** * struct mips_cdmm_device - Represents a single device on a CDMM bus. * @dev: Driver model device object. * @cpu: CPU which can access this device. * @res: MMIO resource. * @type: Device type identifier. * @rev: Device revision number. */ struct mips_cdmm_device { struct device dev; unsigned int cpu; struct resource res; unsigned int type; unsigned int rev; }; /** * struct mips_cdmm_driver - Represents a driver for a CDMM device. * @drv: Driver model driver object. * @probe Callback for probing newly discovered devices. * @remove: Callback to remove the device. * @shutdown: Callback on system shutdown. * @cpu_down: Callback when the parent CPU is going down. * Any CPU pinned threads/timers should be disabled. * @cpu_up: Callback when the parent CPU is coming back up again. * CPU pinned threads/timers can be restarted. * @id_table: Table for CDMM IDs to match against. */ struct mips_cdmm_driver { struct device_driver drv; int (*probe)(struct mips_cdmm_device *); int (*remove)(struct mips_cdmm_device *); void (*shutdown)(struct mips_cdmm_device *); int (*cpu_down)(struct mips_cdmm_device *); int (*cpu_up)(struct mips_cdmm_device *); const struct mips_cdmm_device_id *id_table; }; /** * mips_cdmm_phys_base() - Choose a physical base address for CDMM region. * * Picking a suitable physical address at which to map the CDMM region is * platform specific, so this function can be defined by platform code to * pick a suitable value if none is configured by the bootloader. * * This address must be 32kB aligned, and the region occupies a maximum of 32kB * of physical address space which must not be used for anything else. * * Returns: Physical base address for CDMM region, or 0 on failure. */ phys_addr_t mips_cdmm_phys_base(void); extern struct bus_type mips_cdmm_bustype; void __iomem *mips_cdmm_early_probe(unsigned int dev_type); #define to_mips_cdmm_device(d) container_of(d, struct mips_cdmm_device, dev) #define mips_cdmm_get_drvdata(d) dev_get_drvdata(&d->dev) #define mips_cdmm_set_drvdata(d, p) dev_set_drvdata(&d->dev, p) int mips_cdmm_driver_register(struct mips_cdmm_driver *); void mips_cdmm_driver_unregister(struct mips_cdmm_driver *); /* * module_mips_cdmm_driver() - Helper macro for drivers that don't do * anything special in module init/exit. This eliminates a lot of * boilerplate. Each module may only use this macro once, and * calling it replaces module_init() and module_exit() */ #define module_mips_cdmm_driver(__mips_cdmm_driver) \ module_driver(__mips_cdmm_driver, mips_cdmm_driver_register, \ mips_cdmm_driver_unregister) /* * builtin_mips_cdmm_driver() - Helper macro for drivers that don't do anything * special in init and have no exit. This eliminates some boilerplate. Each * driver may only use this macro once, and calling it replaces device_initcall * (or in some cases, the legacy __initcall). This is meant to be a direct * parallel of module_mips_cdmm_driver() above but without the __exit stuff that * is not used for builtin cases. */ #define builtin_mips_cdmm_driver(__mips_cdmm_driver) \ builtin_driver(__mips_cdmm_driver, mips_cdmm_driver_register) /* drivers/tty/mips_ejtag_fdc.c */ #ifdef CONFIG_MIPS_EJTAG_FDC_EARLYCON int setup_early_fdc_console(void); #else static inline int setup_early_fdc_console(void) { return -ENODEV; } #endif #endif /* __ASM_CDMM_H */ |