1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Kontron PLD driver definitions 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (c) 2010-2012 Kontron Europe GmbH 6*4882a593Smuzhiyun * Author: Michael Brunner <michael.brunner@kontron.com> 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef _LINUX_MFD_KEMPLD_H_ 10*4882a593Smuzhiyun #define _LINUX_MFD_KEMPLD_H_ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun /* kempld register definitions */ 13*4882a593Smuzhiyun #define KEMPLD_IOINDEX 0xa80 14*4882a593Smuzhiyun #define KEMPLD_IODATA 0xa81 15*4882a593Smuzhiyun #define KEMPLD_MUTEX_KEY 0x80 16*4882a593Smuzhiyun #define KEMPLD_VERSION 0x00 17*4882a593Smuzhiyun #define KEMPLD_VERSION_LSB 0x00 18*4882a593Smuzhiyun #define KEMPLD_VERSION_MSB 0x01 19*4882a593Smuzhiyun #define KEMPLD_VERSION_GET_MINOR(x) (x & 0x1f) 20*4882a593Smuzhiyun #define KEMPLD_VERSION_GET_MAJOR(x) ((x >> 5) & 0x1f) 21*4882a593Smuzhiyun #define KEMPLD_VERSION_GET_NUMBER(x) ((x >> 10) & 0xf) 22*4882a593Smuzhiyun #define KEMPLD_VERSION_GET_TYPE(x) ((x >> 14) & 0x3) 23*4882a593Smuzhiyun #define KEMPLD_BUILDNR 0x02 24*4882a593Smuzhiyun #define KEMPLD_BUILDNR_LSB 0x02 25*4882a593Smuzhiyun #define KEMPLD_BUILDNR_MSB 0x03 26*4882a593Smuzhiyun #define KEMPLD_FEATURE 0x04 27*4882a593Smuzhiyun #define KEMPLD_FEATURE_LSB 0x04 28*4882a593Smuzhiyun #define KEMPLD_FEATURE_MSB 0x05 29*4882a593Smuzhiyun #define KEMPLD_FEATURE_BIT_I2C (1 << 0) 30*4882a593Smuzhiyun #define KEMPLD_FEATURE_BIT_WATCHDOG (1 << 1) 31*4882a593Smuzhiyun #define KEMPLD_FEATURE_BIT_GPIO (1 << 2) 32*4882a593Smuzhiyun #define KEMPLD_FEATURE_MASK_UART (7 << 3) 33*4882a593Smuzhiyun #define KEMPLD_FEATURE_BIT_NMI (1 << 8) 34*4882a593Smuzhiyun #define KEMPLD_FEATURE_BIT_SMI (1 << 9) 35*4882a593Smuzhiyun #define KEMPLD_FEATURE_BIT_SCI (1 << 10) 36*4882a593Smuzhiyun #define KEMPLD_SPEC 0x06 37*4882a593Smuzhiyun #define KEMPLD_SPEC_GET_MINOR(x) (x & 0x0f) 38*4882a593Smuzhiyun #define KEMPLD_SPEC_GET_MAJOR(x) ((x >> 4) & 0x0f) 39*4882a593Smuzhiyun #define KEMPLD_IRQ_GPIO 0x35 40*4882a593Smuzhiyun #define KEMPLD_IRQ_I2C 0x36 41*4882a593Smuzhiyun #define KEMPLD_CFG 0x37 42*4882a593Smuzhiyun #define KEMPLD_CFG_GPIO_I2C_MUX (1 << 0) 43*4882a593Smuzhiyun #define KEMPLD_CFG_BIOS_WP (1 << 7) 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #define KEMPLD_CLK 33333333 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun #define KEMPLD_TYPE_RELEASE 0x0 48*4882a593Smuzhiyun #define KEMPLD_TYPE_DEBUG 0x1 49*4882a593Smuzhiyun #define KEMPLD_TYPE_CUSTOM 0x2 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun #define KEMPLD_VERSION_LEN 10 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun /** 54*4882a593Smuzhiyun * struct kempld_info - PLD device information structure 55*4882a593Smuzhiyun * @major: PLD major revision 56*4882a593Smuzhiyun * @minor: PLD minor revision 57*4882a593Smuzhiyun * @buildnr: PLD build number 58*4882a593Smuzhiyun * @number: PLD board specific index 59*4882a593Smuzhiyun * @type: PLD type 60*4882a593Smuzhiyun * @spec_major: PLD FW specification major revision 61*4882a593Smuzhiyun * @spec_minor: PLD FW specification minor revision 62*4882a593Smuzhiyun * @version: PLD version string 63*4882a593Smuzhiyun */ 64*4882a593Smuzhiyun struct kempld_info { 65*4882a593Smuzhiyun unsigned int major; 66*4882a593Smuzhiyun unsigned int minor; 67*4882a593Smuzhiyun unsigned int buildnr; 68*4882a593Smuzhiyun unsigned int number; 69*4882a593Smuzhiyun unsigned int type; 70*4882a593Smuzhiyun unsigned int spec_major; 71*4882a593Smuzhiyun unsigned int spec_minor; 72*4882a593Smuzhiyun char version[KEMPLD_VERSION_LEN]; 73*4882a593Smuzhiyun }; 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun /** 76*4882a593Smuzhiyun * struct kempld_device_data - Internal representation of the PLD device 77*4882a593Smuzhiyun * @io_base: Pointer to the IO memory 78*4882a593Smuzhiyun * @io_index: Pointer to the IO index register 79*4882a593Smuzhiyun * @io_data: Pointer to the IO data register 80*4882a593Smuzhiyun * @pld_clock: PLD clock frequency 81*4882a593Smuzhiyun * @feature_mask: PLD feature mask 82*4882a593Smuzhiyun * @dev: Pointer to kernel device structure 83*4882a593Smuzhiyun * @info: KEMPLD info structure 84*4882a593Smuzhiyun * @lock: PLD mutex 85*4882a593Smuzhiyun */ 86*4882a593Smuzhiyun struct kempld_device_data { 87*4882a593Smuzhiyun void __iomem *io_base; 88*4882a593Smuzhiyun void __iomem *io_index; 89*4882a593Smuzhiyun void __iomem *io_data; 90*4882a593Smuzhiyun u32 pld_clock; 91*4882a593Smuzhiyun u32 feature_mask; 92*4882a593Smuzhiyun struct device *dev; 93*4882a593Smuzhiyun struct kempld_info info; 94*4882a593Smuzhiyun struct mutex lock; 95*4882a593Smuzhiyun }; 96*4882a593Smuzhiyun 97*4882a593Smuzhiyun /** 98*4882a593Smuzhiyun * struct kempld_platform_data - PLD hardware configuration structure 99*4882a593Smuzhiyun * @pld_clock: PLD clock frequency 100*4882a593Smuzhiyun * @gpio_base GPIO base pin number 101*4882a593Smuzhiyun * @ioresource: IO addresses of the PLD 102*4882a593Smuzhiyun * @get_mutex: PLD specific get_mutex callback 103*4882a593Smuzhiyun * @release_mutex: PLD specific release_mutex callback 104*4882a593Smuzhiyun * @get_info: PLD specific get_info callback 105*4882a593Smuzhiyun * @register_cells: PLD specific register_cells callback 106*4882a593Smuzhiyun */ 107*4882a593Smuzhiyun struct kempld_platform_data { 108*4882a593Smuzhiyun u32 pld_clock; 109*4882a593Smuzhiyun int gpio_base; 110*4882a593Smuzhiyun struct resource *ioresource; 111*4882a593Smuzhiyun void (*get_hardware_mutex) (struct kempld_device_data *); 112*4882a593Smuzhiyun void (*release_hardware_mutex) (struct kempld_device_data *); 113*4882a593Smuzhiyun int (*get_info) (struct kempld_device_data *); 114*4882a593Smuzhiyun int (*register_cells) (struct kempld_device_data *); 115*4882a593Smuzhiyun }; 116*4882a593Smuzhiyun 117*4882a593Smuzhiyun extern void kempld_get_mutex(struct kempld_device_data *pld); 118*4882a593Smuzhiyun extern void kempld_release_mutex(struct kempld_device_data *pld); 119*4882a593Smuzhiyun extern u8 kempld_read8(struct kempld_device_data *pld, u8 index); 120*4882a593Smuzhiyun extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data); 121*4882a593Smuzhiyun extern u16 kempld_read16(struct kempld_device_data *pld, u8 index); 122*4882a593Smuzhiyun extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data); 123*4882a593Smuzhiyun extern u32 kempld_read32(struct kempld_device_data *pld, u8 index); 124*4882a593Smuzhiyun extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data); 125*4882a593Smuzhiyun 126*4882a593Smuzhiyun #endif /* _LINUX_MFD_KEMPLD_H_ */ 127