Drop this unused driver.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v1)
drivers/gpio/Makefile | 1 - drivers/gpio/adi_gpio2.c | 425 --------------------------------------- 2 files changed, 426 deletions(-) delete mode 100644 drivers/gpio/adi_gpio2.c
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 7235714fcc0..57603645c1c 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -47,7 +47,6 @@ obj-$(CONFIG_SH_GPIO_PFC) += sh_pfc.o obj-$(CONFIG_OMAP_GPIO) += omap_gpio.o obj-$(CONFIG_BCM2835_GPIO) += bcm2835_gpio.o obj-$(CONFIG_XILINX_GPIO) += xilinx_gpio.o -obj-$(CONFIG_ADI_GPIO2) += adi_gpio2.o obj-$(CONFIG_TCA642X) += tca642x.o obj-$(CONFIG_SUNXI_GPIO) += sunxi_gpio.o obj-$(CONFIG_LPC32XX_GPIO) += lpc32xx_gpio.o diff --git a/drivers/gpio/adi_gpio2.c b/drivers/gpio/adi_gpio2.c deleted file mode 100644 index d0849c85c3b..00000000000 --- a/drivers/gpio/adi_gpio2.c +++ /dev/null @@ -1,425 +0,0 @@ -/* - * ADI GPIO2 Abstraction Layer - * Support BF54x, BF60x and future processors. - * - * Copyright 2008-2013 Analog Devices Inc. - * - * Licensed under the GPL-2 or later - */ - -#include <common.h> -#include <malloc.h> -#include <linux/bug.h> -#include <linux/errno.h> -#include <asm/gpio.h> - -#define RESOURCE_LABEL_SIZE 16 - -static struct str_ident { - char name[RESOURCE_LABEL_SIZE]; -} str_ident[MAX_RESOURCES]; - -static void gpio_error(unsigned gpio) -{ - printf("adi_gpio2: GPIO %d wasn't requested!\n", gpio); -} - -static void set_label(unsigned short ident, const char *label) -{ - if (label) { - strncpy(str_ident[ident].name, label, - RESOURCE_LABEL_SIZE); - str_ident[ident].name[RESOURCE_LABEL_SIZE - 1] = 0; - } -} - -static char *get_label(unsigned short ident) -{ - return *str_ident[ident].name ? str_ident[ident].name : "UNKNOWN"; -} - -static int cmp_label(unsigned short ident, const char *label) -{ - if (label == NULL) - printf("adi_gpio2: please provide none-null label\n"); - - if (label) - return strcmp(str_ident[ident].name, label); - else - return -EINVAL; -} - -#define map_entry(m, i) reserved_##m##_map[gpio_bank(i)] -#define is_reserved(m, i, e) (map_entry(m, i) & gpio_bit(i)) -#define reserve(m, i) (map_entry(m, i) |= gpio_bit(i)) -#define unreserve(m, i) (map_entry(m, i) &= ~gpio_bit(i)) -#define DECLARE_RESERVED_MAP(m, c) unsigned short reserved_##m##_map[c] - -static DECLARE_RESERVED_MAP(gpio, GPIO_BANK_NUM); -static DECLARE_RESERVED_MAP(peri, gpio_bank(MAX_RESOURCES)); - -inline int check_gpio(unsigned gpio) -{ -#if defined(CONFIG_BF54x) - if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15 || - gpio == GPIO_PH14 || gpio == GPIO_PH15 || - gpio == GPIO_PJ14 || gpio == GPIO_PJ15) - return -EINVAL; -#endif - if (gpio >= MAX_GPIOS) - return -EINVAL; - return 0; -} - -static void port_setup(unsigned gpio, unsigned short usage) -{ -#if defined(CONFIG_BF54x) - if (usage == GPIO_USAGE) - gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio); - else - gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio); -#else - if (usage == GPIO_USAGE) - gpio_array[gpio_bank(gpio)]->port_fer_clear = gpio_bit(gpio); - else - gpio_array[gpio_bank(gpio)]->port_fer_set = gpio_bit(gpio); -#endif -} - -inline void portmux_setup(unsigned short per) -{ - u32 pmux; - u16 ident = P_IDENT(per); - u16 function = P_FUNCT2MUX(per); - - pmux = gpio_array[gpio_bank(ident)]->port_mux; - - pmux &= ~(0x3 << (2 * gpio_sub_n(ident))); - pmux |= (function & 0x3) << (2 * gpio_sub_n(ident)); - - gpio_array[gpio_bank(ident)]->port_mux = pmux; -} - -inline u16 get_portmux(unsigned short per) -{ - u32 pmux; - u16 ident = P_IDENT(per); - - pmux = gpio_array[gpio_bank(ident)]->port_mux; - - return pmux >> (2 * gpio_sub_n(ident)) & 0x3; -} - -unsigned short get_gpio_dir(unsigned gpio) -{ - return 0x01 & - (gpio_array[gpio_bank(gpio)]->dir_clear >> gpio_sub_n(gpio)); -} - -/*********************************************************** -* -* FUNCTIONS: Peripheral Resource Allocation -* and PortMux Setup -* -* INPUTS/OUTPUTS: -* per Peripheral Identifier -* label String -* -* DESCRIPTION: Peripheral Resource Allocation and Setup API -**************************************************************/ - -int peripheral_request(unsigned short per, const char *label) -{ - unsigned short ident = P_IDENT(per); - - /* - * Don't cares are pins with only one dedicated function - */ - - if (per & P_DONTCARE) - return 0; - - if (!(per & P_DEFINED)) - return -EINVAL; - - BUG_ON(ident >= MAX_RESOURCES); - - /* If a pin can be muxed as either GPIO or peripheral, make - * sure it is not already a GPIO pin when we request it. - */ - if (unlikely(!check_gpio(ident) && is_reserved(gpio, ident, 1))) { - printf("%s: Peripheral %d is already reserved as GPIO by %s!\n", - __func__, ident, get_label(ident)); - return -EBUSY; - } - - if (unlikely(is_reserved(peri, ident, 1))) { - /* - * Pin functions like AMC address strobes my - * be requested and used by several drivers - */ - - if (!((per & P_MAYSHARE) && - get_portmux(per) == P_FUNCT2MUX(per))) { - /* - * Allow that the identical pin function can - * be requested from the same driver twice - */ - - if (cmp_label(ident, label) == 0) - goto anyway; - - printf("%s: Peripheral %d function %d is already " - "reserved by %s!\n", __func__, ident, - P_FUNCT2MUX(per), get_label(ident)); - return -EBUSY; - } - } - - anyway: - reserve(peri, ident); - - portmux_setup(per); - port_setup(ident, PERIPHERAL_USAGE); - - set_label(ident, label); - - return 0; -} - -int peripheral_request_list(const unsigned short per[], const char *label) -{ - u16 cnt; - int ret; - - for (cnt = 0; per[cnt] != 0; cnt++) { - ret = peripheral_request(per[cnt], label); - - if (ret < 0) { - for (; cnt > 0; cnt--) - peripheral_free(per[cnt - 1]); - - return ret; - } - } - - return 0; -} - -void peripheral_free(unsigned short per) -{ - unsigned short ident = P_IDENT(per); - - if (per & P_DONTCARE) - return; - - if (!(per & P_DEFINED)) - return; - - if (unlikely(!is_reserved(peri, ident, 0))) - return; - - if (!(per & P_MAYSHARE)) - port_setup(ident, GPIO_USAGE); - - unreserve(peri, ident); - - set_label(ident, "free"); -} - -void peripheral_free_list(const unsigned short per[]) -{ - u16 cnt; - for (cnt = 0; per[cnt] != 0; cnt++) - peripheral_free(per[cnt]); -} - -/*********************************************************** -* -* FUNCTIONS: GPIO Driver -* -* INPUTS/OUTPUTS: -* gpio PIO Number between 0 and MAX_GPIOS -* label String -* -* DESCRIPTION: GPIO Driver API -**************************************************************/ - -int gpio_request(unsigned gpio, const char *label) -{ - if (check_gpio(gpio) < 0) - return -EINVAL; - - /* - * Allow that the identical GPIO can - * be requested from the same driver twice - * Do nothing and return - - */ - - if (cmp_label(gpio, label) == 0) - return 0; - - if (unlikely(is_reserved(gpio, gpio, 1))) { - printf("adi_gpio2: GPIO %d is already reserved by %s!\n", - gpio, get_label(gpio)); - return -EBUSY; - } - if (unlikely(is_reserved(peri, gpio, 1))) { - printf("adi_gpio2: GPIO %d is already reserved as Peripheral " - "by %s!\n", gpio, get_label(gpio)); - return -EBUSY; - } - - reserve(gpio, gpio); - set_label(gpio, label); - - port_setup(gpio, GPIO_USAGE); - - return 0; -} - -int gpio_free(unsigned gpio) -{ - if (check_gpio(gpio) < 0) - return -1; - - if (unlikely(!is_reserved(gpio, gpio, 0))) { - gpio_error(gpio); - return -1; - } - - unreserve(gpio, gpio); - - set_label(gpio, "free"); - - return 0; -} - -#ifdef ADI_SPECIAL_GPIO_BANKS -static DECLARE_RESERVED_MAP(special_gpio, gpio_bank(MAX_RESOURCES)); - -int special_gpio_request(unsigned gpio, const char *label) -{ - /* - * Allow that the identical GPIO can - * be requested from the same driver twice - * Do nothing and return - - */ - - if (cmp_label(gpio, label) == 0) - return 0; - - if (unlikely(is_reserved(special_gpio, gpio, 1))) { - printf("adi_gpio2: GPIO %d is already reserved by %s!\n", - gpio, get_label(gpio)); - return -EBUSY; - } - if (unlikely(is_reserved(peri, gpio, 1))) { - printf("adi_gpio2: GPIO %d is already reserved as Peripheral " - "by %s!\n", gpio, get_label(gpio)); - - return -EBUSY; - } - - reserve(special_gpio, gpio); - reserve(peri, gpio); - - set_label(gpio, label); - port_setup(gpio, GPIO_USAGE); - - return 0; -} - -void special_gpio_free(unsigned gpio) -{ - if (unlikely(!is_reserved(special_gpio, gpio, 0))) { - gpio_error(gpio); - return; - } - - unreserve(special_gpio, gpio); - unreserve(peri, gpio); - set_label(gpio, "free"); -} -#endif - -static inline void __gpio_direction_input(unsigned gpio) -{ - gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio); -#if defined(CONFIG_BF54x) - gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio); -#else - gpio_array[gpio_bank(gpio)]->inen_set = gpio_bit(gpio); -#endif -} - -int gpio_direction_input(unsigned gpio) -{ - unsigned long flags; - - if (!is_reserved(gpio, gpio, 0)) { - gpio_error(gpio); - return -EINVAL; - } - - local_irq_save(flags); - __gpio_direction_input(gpio); - local_irq_restore(flags); - - return 0; -} - -int gpio_set_value(unsigned gpio, int arg) -{ - if (arg) - gpio_array[gpio_bank(gpio)]->data_set = gpio_bit(gpio); - else - gpio_array[gpio_bank(gpio)]->data_clear = gpio_bit(gpio); - - return 0; -} - -int gpio_direction_output(unsigned gpio, int value) -{ - unsigned long flags; - - if (!is_reserved(gpio, gpio, 0)) { - gpio_error(gpio); - return -EINVAL; - } - - local_irq_save(flags); - -#if defined(CONFIG_BF54x) - gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio); -#else - gpio_array[gpio_bank(gpio)]->inen_clear = gpio_bit(gpio); -#endif - gpio_set_value(gpio, value); - gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio); - - local_irq_restore(flags); - - return 0; -} - -int gpio_get_value(unsigned gpio) -{ - return 1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio)); -} - -void gpio_labels(void) -{ - int c, gpio; - - for (c = 0; c < MAX_RESOURCES; c++) { - gpio = is_reserved(gpio, c, 1); - if (!check_gpio(c) && gpio) - printf("GPIO_%d:\t%s\tGPIO %s\n", c, get_label(c), - get_gpio_dir(c) ? "OUTPUT" : "INPUT"); - else if (is_reserved(peri, c, 1)) - printf("GPIO_%d:\t%s\tPeripheral\n", c, get_label(c)); - else - continue; - } -}