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