1/*
2 * platform_ipc.c: IPC platform library file
3 *
4 * (C) Copyright 2013 Intel Corporation
5 * Author: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@intel.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; version 2
10 * of the License.
11 */
12
13#include <linux/init.h>
14#include <linux/kernel.h>
15#include <linux/interrupt.h>
16#include <linux/sfi.h>
17#include <linux/gpio.h>
18#include <asm/intel-mid.h>
19#include "platform_ipc.h"
20
21void __init ipc_device_handler(struct sfi_device_table_entry *pentry,
22				struct devs_id *dev)
23{
24	struct platform_device *pdev;
25	void *pdata = NULL;
26	static struct resource res __initdata = {
27		.name = "IRQ",
28		.flags = IORESOURCE_IRQ,
29	};
30
31	pr_debug("IPC bus, name = %16.16s, irq = 0x%2x\n",
32		pentry->name, pentry->irq);
33
34	/*
35	 * We need to call platform init of IPC devices to fill misc_pdata
36	 * structure. It will be used in msic_init for initialization.
37	 */
38	if (dev != NULL)
39		pdata = dev->get_platform_data(pentry);
40
41	/*
42	 * On Medfield the platform device creation is handled by the MSIC
43	 * MFD driver so we don't need to do it here.
44	 */
45	if (intel_mid_has_msic())
46		return;
47
48	pdev = platform_device_alloc(pentry->name, 0);
49	if (pdev == NULL) {
50		pr_err("out of memory for SFI platform device '%s'.\n",
51			pentry->name);
52		return;
53	}
54	res.start = pentry->irq;
55	platform_device_add_resources(pdev, &res, 1);
56
57	pdev->dev.platform_data = pdata;
58	intel_scu_device_register(pdev);
59}
60
61static const struct devs_id pmic_audio_dev_id __initconst = {
62	.name = "pmic_audio",
63	.type = SFI_DEV_TYPE_IPC,
64	.delay = 1,
65	.device_handler = &ipc_device_handler,
66};
67
68sfi_device(pmic_audio_dev_id);
69