// SPDX-License-Identifier: GPL-2.0-only /* * PCAL9555a platform data initialization file * * Copyright (C) 2016, Intel Corporation * * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com> * Dan O'Donovan <dan@emutex.com> */ #include <linux/gpio.h> #include <linux/init.h> #include <linux/i2c.h> #include <linux/platform_data/pca953x.h> #include <linux/sfi.h> #include <asm/intel-mid.h> #define PCAL9555A_NUM 4 static struct pca953x_platform_data pcal9555a_pdata[PCAL9555A_NUM]; static int nr; static void __init *pcal9555a_platform_data(void *info) { struct i2c_board_info *i2c_info = info; char *type = i2c_info->type; struct pca953x_platform_data *pcal9555a; char base_pin_name[SFI_NAME_LEN + 1]; char intr_pin_name[SFI_NAME_LEN + 1]; int gpio_base, intr; snprintf(base_pin_name, sizeof(base_pin_name), "%s_base", type); snprintf(intr_pin_name, sizeof(intr_pin_name), "%s_int", type); gpio_base = get_gpio_by_name(base_pin_name); intr = get_gpio_by_name(intr_pin_name); /* Check if the SFI record valid */ if (gpio_base == -1) return NULL; if (nr >= PCAL9555A_NUM) { pr_err("%s: Too many instances, only %d supported\n", __func__, PCAL9555A_NUM); return NULL; } pcal9555a = &pcal9555a_pdata[nr++]; pcal9555a->gpio_base = gpio_base; if (intr >= 0) { i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET; pcal9555a->irq_base = gpio_base + INTEL_MID_IRQ_OFFSET; } else { i2c_info->irq = -1; pcal9555a->irq_base = -1; } strcpy(type, "pcal9555a"); return pcal9555a; } static const struct devs_id pcal9555a_1_dev_id __initconst = { .name = "pcal9555a-1", .type = SFI_DEV_TYPE_I2C, .delay = 1, .get_platform_data = &pcal9555a_platform_data, }; static const struct devs_id pcal9555a_2_dev_id __initconst = { .name = "pcal9555a-2", .type = SFI_DEV_TYPE_I2C, .delay = 1, .get_platform_data = &pcal9555a_platform_data, }; static const struct devs_id pcal9555a_3_dev_id __initconst = { .name = "pcal9555a-3", .type = SFI_DEV_TYPE_I2C, .delay = 1, .get_platform_data = &pcal9555a_platform_data, }; static const struct devs_id pcal9555a_4_dev_id __initconst = { .name = "pcal9555a-4", .type = SFI_DEV_TYPE_I2C, .delay = 1, .get_platform_data = &pcal9555a_platform_data, }; sfi_device(pcal9555a_1_dev_id); sfi_device(pcal9555a_2_dev_id); sfi_device(pcal9555a_3_dev_id); sfi_device(pcal9555a_4_dev_id);