diff options
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/Makefile | 5 | ||||
-rw-r--r-- | drivers/gpio/adi_gpio2.c | 425 | ||||
-rw-r--r-- | drivers/gpio/kona_gpio.c | 141 | ||||
-rw-r--r-- | drivers/gpio/mpc83xx_gpio.c | 183 | ||||
-rw-r--r-- | drivers/gpio/pca9698.c | 127 |
5 files changed, 0 insertions, 881 deletions
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 7235714fcc0..fcd136367ac 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -23,13 +23,11 @@ obj-$(CONFIG_INTEL_ICH6_GPIO) += intel_ich6_gpio.o obj-$(CONFIG_INTEL_BROADWELL_GPIO) += intel_broadwell_gpio.o obj-$(CONFIG_IPROC_GPIO) += iproc_gpio.o obj-$(CONFIG_KIRKWOOD_GPIO) += kw_gpio.o -obj-$(CONFIG_KONA_GPIO) += kona_gpio.o obj-$(CONFIG_MCP230XX_GPIO) += mcp230xx_gpio.o obj-$(CONFIG_MXC_GPIO) += mxc_gpio.o obj-$(CONFIG_MXS_GPIO) += mxs_gpio.o obj-$(CONFIG_NPCM_GPIO) += npcm_gpio.o obj-$(CONFIG_PCA953X) += pca953x.o -obj-$(CONFIG_PCA9698) += pca9698.o obj-$(CONFIG_ROCKCHIP_GPIO) += rk_gpio.o obj-$(CONFIG_RCAR_GPIO) += gpio-rcar.o obj-$(CONFIG_RZA1_GPIO) += gpio-rza1.o @@ -38,16 +36,13 @@ obj-$(CONFIG_SANDBOX_GPIO) += sandbox.o sandbox_test.o obj-$(CONFIG_TEGRA_GPIO) += tegra_gpio.o obj-$(CONFIG_TEGRA186_GPIO) += tegra186_gpio.o obj-$(CONFIG_DA8XX_GPIO) += da8xx_gpio.o -obj-$(CONFIG_DM644X_GPIO) += da8xx_gpio.o obj-$(CONFIG_ALTERA_PIO) += altera_pio.o -obj-$(CONFIG_MPC83XX_GPIO) += mpc83xx_gpio.o obj-$(CONFIG_MPC8XXX_GPIO) += mpc8xxx_gpio.o obj-$(CONFIG_MPC83XX_SPISEL_BOOT) += mpc83xx_spisel_boot.o obj-$(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; - } -} diff --git a/drivers/gpio/kona_gpio.c b/drivers/gpio/kona_gpio.c deleted file mode 100644 index 29791882a34..00000000000 --- a/drivers/gpio/kona_gpio.c +++ /dev/null @@ -1,141 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright 2013 Broadcom Corporation. - */ - -#include <common.h> -#include <malloc.h> -#include <asm/io.h> -#include <asm/arch/sysmap.h> - -#define GPIO_BASE (void *)GPIO2_BASE_ADDR - -#define GPIO_PASSWD 0x00a5a501 -#define GPIO_PER_BANK 32 -#define GPIO_MAX_BANK_NUM 8 - -#define GPIO_BANK(gpio) ((gpio) >> 5) -#define GPIO_BITMASK(gpio) \ - (1UL << ((gpio) & (GPIO_PER_BANK - 1))) - -#define GPIO_OUT_STATUS(bank) (0x00000000 + ((bank) << 2)) -#define GPIO_IN_STATUS(bank) (0x00000020 + ((bank) << 2)) -#define GPIO_OUT_SET(bank) (0x00000040 + ((bank) << 2)) -#define GPIO_OUT_CLEAR(bank) (0x00000060 + ((bank) << 2)) -#define GPIO_INT_STATUS(bank) (0x00000080 + ((bank) << 2)) -#define GPIO_INT_MASK(bank) (0x000000a0 + ((bank) << 2)) -#define GPIO_INT_MSKCLR(bank) (0x000000c0 + ((bank) << 2)) -#define GPIO_CONTROL(bank) (0x00000100 + ((bank) << 2)) -#define GPIO_PWD_STATUS(bank) (0x00000500 + ((bank) << 2)) - -#define GPIO_GPPWR_OFFSET 0x00000520 - -#define GPIO_GPCTR0_DBR_SHIFT 5 -#define GPIO_GPCTR0_DBR_MASK 0x000001e0 - -#define GPIO_GPCTR0_ITR_SHIFT 3 -#define GPIO_GPCTR0_ITR_MASK 0x00000018 -#define GPIO_GPCTR0_ITR_CMD_RISING_EDGE 0x00000001 -#define GPIO_GPCTR0_ITR_CMD_FALLING_EDGE 0x00000002 -#define GPIO_GPCTR0_ITR_CMD_BOTH_EDGE 0x00000003 - -#define GPIO_GPCTR0_IOTR_MASK 0x00000001 -#define GPIO_GPCTR0_IOTR_CMD_0UTPUT 0x00000000 -#define GPIO_GPCTR0_IOTR_CMD_INPUT 0x00000001 - -int gpio_request(unsigned gpio, const char *label) -{ - unsigned int value, off; - - writel(GPIO_PASSWD, GPIO_BASE + GPIO_GPPWR_OFFSET); - off = GPIO_PWD_STATUS(GPIO_BANK(gpio)); - value = readl(GPIO_BASE + off) & ~GPIO_BITMASK(gpio); - writel(value, GPIO_BASE + off); - - return 0; -} - -int gpio_free(unsigned gpio) -{ - unsigned int value, off; - - writel(GPIO_PASSWD, GPIO_BASE + GPIO_GPPWR_OFFSET); - off = GPIO_PWD_STATUS(GPIO_BANK(gpio)); - value = readl(GPIO_BASE + off) | GPIO_BITMASK(gpio); - writel(value, GPIO_BASE + off); - - return 0; -} - -int gpio_direction_input(unsigned gpio) -{ - u32 val; - - val = readl(GPIO_BASE + GPIO_CONTROL(gpio)); - val &= ~GPIO_GPCTR0_IOTR_MASK; - val |= GPIO_GPCTR0_IOTR_CMD_INPUT; - writel(val, GPIO_BASE + GPIO_CONTROL(gpio)); - - return 0; -} - -int gpio_direction_output(unsigned gpio, int value) -{ - int bank_id = GPIO_BANK(gpio); - int bitmask = GPIO_BITMASK(gpio); - u32 val, off; - - val = readl(GPIO_BASE + GPIO_CONTROL(gpio)); - val &= ~GPIO_GPCTR0_IOTR_MASK; - val |= GPIO_GPCTR0_IOTR_CMD_0UTPUT; - writel(val, GPIO_BASE + GPIO_CONTROL(gpio)); - off = value ? GPIO_OUT_SET(bank_id) : GPIO_OUT_CLEAR(bank_id); - - val = readl(GPIO_BASE + off); - val |= bitmask; - writel(val, GPIO_BASE + off); - - return 0; -} - -int gpio_get_value(unsigned gpio) -{ - int bank_id = GPIO_BANK(gpio); - int bitmask = GPIO_BITMASK(gpio); - u32 val, off; - - /* determine the GPIO pin direction */ - val = readl(GPIO_BASE + GPIO_CONTROL(gpio)); - val &= GPIO_GPCTR0_IOTR_MASK; - - /* read the GPIO bank status */ - off = (GPIO_GPCTR0_IOTR_CMD_INPUT == val) ? - GPIO_IN_STATUS(bank_id) : GPIO_OUT_STATUS(bank_id); - val = readl(GPIO_BASE + off); - - /* return the specified bit status */ - return !!(val & bitmask); -} - -void gpio_set_value(unsigned gpio, int value) -{ - int bank_id = GPIO_BANK(gpio); - int bitmask = GPIO_BITMASK(gpio); - u32 val, off; - - /* determine the GPIO pin direction */ - val = readl(GPIO_BASE + GPIO_CONTROL(gpio)); - val &= GPIO_GPCTR0_IOTR_MASK; - - /* this function only applies to output pin */ - if (GPIO_GPCTR0_IOTR_CMD_INPUT == val) { - printf("%s: Cannot set an input pin %d\n", __func__, gpio); - return; - } - - off = value ? GPIO_OUT_SET(bank_id) : GPIO_OUT_CLEAR(bank_id); - - val = readl(GPIO_BASE + off); - val |= bitmask; - writel(val, GPIO_BASE + off); -} diff --git a/drivers/gpio/mpc83xx_gpio.c b/drivers/gpio/mpc83xx_gpio.c deleted file mode 100644 index bf693c8d457..00000000000 --- a/drivers/gpio/mpc83xx_gpio.c +++ /dev/null @@ -1,183 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Freescale MPC83xx GPIO handling. - */ - -#include <common.h> -#include <malloc.h> -#include <mpc83xx.h> -#include <asm/gpio.h> -#include <asm/io.h> - -#ifndef CFG_MPC83XX_GPIO_0_INIT_DIRECTION -#define CFG_MPC83XX_GPIO_0_INIT_DIRECTION 0 -#endif -#ifndef CFG_MPC83XX_GPIO_1_INIT_DIRECTION -#define CFG_MPC83XX_GPIO_1_INIT_DIRECTION 0 -#endif -#ifndef CFG_MPC83XX_GPIO_0_INIT_OPEN_DRAIN -#define CFG_MPC83XX_GPIO_0_INIT_OPEN_DRAIN 0 -#endif -#ifndef CFG_MPC83XX_GPIO_1_INIT_OPEN_DRAIN -#define CFG_MPC83XX_GPIO_1_INIT_OPEN_DRAIN 0 -#endif -#ifndef CFG_MPC83XX_GPIO_0_INIT_VALUE -#define CFG_MPC83XX_GPIO_0_INIT_VALUE 0 -#endif -#ifndef CFG_MPC83XX_GPIO_1_INIT_VALUE -#define CFG_MPC83XX_GPIO_1_INIT_VALUE 0 -#endif - -static unsigned int gpio_output_value[MPC83XX_GPIO_CTRLRS]; - -/* - * Generic_GPIO primitives. - */ - -int gpio_request(unsigned gpio, const char *label) -{ - if (gpio >= MAX_NUM_GPIOS) - return -1; - - return 0; -} - -int gpio_free(unsigned gpio) -{ - /* Do not set to input */ - return 0; -} - -/* set GPIO pin 'gpio' as an input */ -int gpio_direction_input(unsigned gpio) -{ - immap_t *im = (immap_t *)CONFIG_SYS_IMMR; - unsigned int ctrlr; - unsigned int line; - unsigned int line_mask; - - /* 32-bits per controller */ - ctrlr = gpio >> 5; - line = gpio & (0x1F); - - /* Big endian */ - line_mask = 1 << (31 - line); - - clrbits_be32(&im->gpio[ctrlr].dir, line_mask); - - return 0; -} - -/* set GPIO pin 'gpio' as an output, with polarity 'value' */ -int gpio_direction_output(unsigned gpio, int value) -{ - immap_t *im = (immap_t *)CONFIG_SYS_IMMR; - unsigned int ctrlr; - unsigned int line; - unsigned int line_mask; - - if (value != 0 && value != 1) { - printf("Error: Value parameter must be 0 or 1.\n"); - return -1; - } - - gpio_set_value(gpio, value); - - /* 32-bits per controller */ - ctrlr = gpio >> 5; - line = gpio & (0x1F); - - /* Big endian */ - line_mask = 1 << (31 - line); - - /* Make the line output */ - setbits_be32(&im->gpio[ctrlr].dir, line_mask); - - return 0; -} - -/* read GPIO IN value of pin 'gpio' */ -int gpio_get_value(unsigned gpio) -{ - immap_t *im = (immap_t *)CONFIG_SYS_IMMR; - unsigned int ctrlr; - unsigned int line; - unsigned int line_mask; - - /* 32-bits per controller */ - ctrlr = gpio >> 5; - line = gpio & (0x1F); - - /* Big endian */ - line_mask = 1 << (31 - line); - - /* Read the value and mask off the bit */ - return (in_be32(&im->gpio[ctrlr].dat) & line_mask) != 0; -} - -/* write GPIO OUT value to pin 'gpio' */ -int gpio_set_value(unsigned gpio, int value) -{ - immap_t *im = (immap_t *)CONFIG_SYS_IMMR; - unsigned int ctrlr; - unsigned int line; - unsigned int line_mask; - - if (value != 0 && value != 1) { - printf("Error: Value parameter must be 0 or 1.\n"); - return -1; - } - - /* 32-bits per controller */ - ctrlr = gpio >> 5; - line = gpio & (0x1F); - - /* Big endian */ - line_mask = 1 << (31 - line); - - /* Update the local output buffer soft copy */ - gpio_output_value[ctrlr] = - (gpio_output_value[ctrlr] & ~line_mask) | \ - (value ? line_mask : 0); - - /* Write the output */ - out_be32(&im->gpio[ctrlr].dat, gpio_output_value[ctrlr]); - - return 0; -} - -/* Configure GPIO registers early */ -void mpc83xx_gpio_init_f(void) -{ - immap_t *im = (immap_t *)CONFIG_SYS_IMMR; - -#if MPC83XX_GPIO_CTRLRS >= 1 - out_be32(&im->gpio[0].dir, CFG_MPC83XX_GPIO_0_INIT_DIRECTION); - out_be32(&im->gpio[0].odr, CFG_MPC83XX_GPIO_0_INIT_OPEN_DRAIN); - out_be32(&im->gpio[0].dat, CFG_MPC83XX_GPIO_0_INIT_VALUE); - out_be32(&im->gpio[0].ier, 0xFFFFFFFF); /* Clear all events */ - out_be32(&im->gpio[0].imr, 0); - out_be32(&im->gpio[0].icr, 0); -#endif - -#if MPC83XX_GPIO_CTRLRS >= 2 - out_be32(&im->gpio[1].dir, CFG_MPC83XX_GPIO_1_INIT_DIRECTION); - out_be32(&im->gpio[1].odr, CFG_MPC83XX_GPIO_1_INIT_OPEN_DRAIN); - out_be32(&im->gpio[1].dat, CFG_MPC83XX_GPIO_1_INIT_VALUE); - out_be32(&im->gpio[1].ier, 0xFFFFFFFF); /* Clear all events */ - out_be32(&im->gpio[1].imr, 0); - out_be32(&im->gpio[1].icr, 0); -#endif -} - -/* Initialize GPIO soft-copies */ -void mpc83xx_gpio_init_r(void) -{ -#if MPC83XX_GPIO_CTRLRS >= 1 - gpio_output_value[0] = CFG_MPC83XX_GPIO_0_INIT_VALUE; -#endif - -#if MPC83XX_GPIO_CTRLRS >= 2 - gpio_output_value[1] = CFG_MPC83XX_GPIO_1_INIT_VALUE; -#endif -} diff --git a/drivers/gpio/pca9698.c b/drivers/gpio/pca9698.c deleted file mode 100644 index 11274c78101..00000000000 --- a/drivers/gpio/pca9698.c +++ /dev/null @@ -1,127 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * (C) Copyright 2011 - * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc - */ - -/* - * Driver for NXP's pca9698 40 bit I2C gpio expander - */ - -#include <common.h> -#include <i2c.h> -#include <malloc.h> -#include <linux/errno.h> -#include <pca9698.h> - -/* - * The pca9698 registers - */ - -#define PCA9698_REG_INPUT 0x00 -#define PCA9698_REG_OUTPUT 0x08 -#define PCA9698_REG_POLARITY 0x10 -#define PCA9698_REG_CONFIG 0x18 - -#define PCA9698_BUFFER_SIZE 5 -#define PCA9698_GPIO_COUNT 40 - -static int pca9698_read40(u8 addr, u8 offset, u8 *buffer) -{ - u8 command = offset | 0x80; /* autoincrement */ - - return i2c_read(addr, command, 1, buffer, PCA9698_BUFFER_SIZE); -} - -static int pca9698_write40(u8 addr, u8 offset, u8 *buffer) -{ - u8 command = offset | 0x80; /* autoincrement */ - - return i2c_write(addr, command, 1, buffer, PCA9698_BUFFER_SIZE); -} - -static void pca9698_set_bit(unsigned gpio, u8 *buffer, unsigned value) -{ - unsigned byte = gpio / 8; - unsigned bit = gpio % 8; - - if (value) - buffer[byte] |= (1 << bit); - else - buffer[byte] &= ~(1 << bit); -} - -int pca9698_request(unsigned gpio, const char *label) -{ - if (gpio >= PCA9698_GPIO_COUNT) - return -EINVAL; - - return 0; -} - -void pca9698_free(unsigned gpio) -{ -} - -int pca9698_direction_input(u8 addr, unsigned gpio) -{ - u8 data[PCA9698_BUFFER_SIZE]; - int res; - - res = pca9698_read40(addr, PCA9698_REG_CONFIG, data); - if (res) - return res; - - pca9698_set_bit(gpio, data, 1); - - return pca9698_write40(addr, PCA9698_REG_CONFIG, data); -} - -int pca9698_direction_output(u8 addr, unsigned gpio, int value) -{ - u8 data[PCA9698_BUFFER_SIZE]; - int res; - - res = pca9698_set_value(addr, gpio, value); - if (res) - return res; - - res = pca9698_read40(addr, PCA9698_REG_CONFIG, data); - if (res) - return res; - - pca9698_set_bit(gpio, data, 0); - - return pca9698_write40(addr, PCA9698_REG_CONFIG, data); -} - -int pca9698_get_value(u8 addr, unsigned gpio) -{ - unsigned config_byte = gpio / 8; - unsigned config_bit = gpio % 8; - unsigned value; - u8 data[PCA9698_BUFFER_SIZE]; - int res; - - res = pca9698_read40(addr, PCA9698_REG_INPUT, data); - if (res) - return -1; - - value = data[config_byte] & (1 << config_bit); - - return !!value; -} - -int pca9698_set_value(u8 addr, unsigned gpio, int value) -{ - u8 data[PCA9698_BUFFER_SIZE]; - int res; - - res = pca9698_read40(addr, PCA9698_REG_OUTPUT, data); - if (res) - return res; - - pca9698_set_bit(gpio, data, value); - - return pca9698_write40(addr, PCA9698_REG_OUTPUT, data); -} |