| /* |
| * PCAL9555a platform data initialization file |
| * |
| * Copyright (C) 2016, Intel Corporation |
| * |
| * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
| * Dan O'Donovan <dan@emutex.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; version 2 |
| * of the License. |
| */ |
| |
| #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); |