1 /* 2 * DaVinci GPIO Platform Related Defines 3 * 4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation version 2. 9 * 10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 11 * kind, whether express or implied; without even the implied warranty 12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 */ 15 16 #ifndef __DAVINCI_GPIO_PLATFORM_H 17 #define __DAVINCI_GPIO_PLATFORM_H 18 19 #include <linux/io.h> 20 #include <linux/spinlock.h> 21 22 #include <asm-generic/gpio.h> 23 24 struct davinci_gpio_platform_data { 25 u32 ngpio; 26 u32 gpio_unbanked; 27 }; 28 29 30 struct davinci_gpio_controller { 31 struct gpio_chip chip; 32 struct irq_domain *irq_domain; 33 /* Serialize access to GPIO registers */ 34 spinlock_t lock; 35 void __iomem *regs; 36 void __iomem *set_data; 37 void __iomem *clr_data; 38 void __iomem *in_data; 39 int gpio_unbanked; 40 unsigned gpio_irq; 41 }; 42 43 /* 44 * basic gpio routines 45 */ 46 #define GPIO(X) (X) /* 0 <= X <= (DAVINCI_N_GPIO - 1) */ 47 48 /* Convert GPIO signal to GPIO pin number */ 49 #define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio)) 50 __gpio_mask(unsigned gpio)51static inline u32 __gpio_mask(unsigned gpio) 52 { 53 return 1 << (gpio % 32); 54 } 55 #endif 56