summaryrefslogtreecommitdiffstats
path: root/sound/soc/intel/atom/sst/sst_pci.c
blob: 5862fe968083696ddde9ea129f3a0a066620616b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
// SPDX-License-Identifier: GPL-2.0-only
/*
 *  sst_pci.c - SST (LPE) driver init file for pci enumeration.
 *
 *  Copyright (C) 2008-14	Intel Corp
 *  Authors:	Vinod Koul <vinod.koul@intel.com>
 *		Harsha Priya <priya.harsha@intel.com>
 *		Dharageswari R <dharageswari.r@intel.com>
 *		KP Jeeja <jeeja.kp@intel.com>
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/fs.h>
#include <linux/firmware.h>
#include <linux/pm_runtime.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <asm/platform_sst_audio.h>
#include "../sst-mfld-platform.h"
#include "sst.h"

static int sst_platform_get_resources(struct intel_sst_drv *ctx)
{
	int ddr_base, ret = 0;
	struct pci_dev *pci = ctx->pci;

	ret = pci_request_regions(pci, SST_DRV_NAME);
	if (ret)
		return ret;

	/* map registers */
	/* DDR base */
	if (ctx->dev_id == SST_MRFLD_PCI_ID) {
		ctx->ddr_base = pci_resource_start(pci, 0);
		/* check that the relocated IMR base matches with FW Binary */
		ddr_base = relocate_imr_addr_mrfld(ctx->ddr_base);
		if (!ctx->pdata->lib_info) {
			dev_err(ctx->dev, "lib_info pointer NULL\n");
			ret = -EINVAL;
			goto do_release_regions;
		}
		if (ddr_base != ctx->pdata->lib_info->mod_base) {
			dev_err(ctx->dev,
					"FW LSP DDR BASE does not match with IFWI\n");
			ret = -EINVAL;
			goto do_release_regions;
		}
		ctx->ddr_end = pci_resource_end(pci, 0);

		ctx->ddr = pcim_iomap(pci, 0,
					pci_resource_len(pci, 0));
		if (!ctx->ddr) {
			ret = -EINVAL;
			goto do_release_regions;
		}
		dev_dbg(ctx->dev, "sst: DDR Ptr %p\n", ctx->ddr);
	} else {
		ctx->ddr = NULL;
	}
	/* SHIM */
	ctx->shim_phy_add = pci_resource_start(pci, 1);
	ctx->shim = pcim_iomap(pci, 1, pci_resource_len(pci, 1));
	if (!ctx->shim) {
		ret = -EINVAL;
		goto do_release_regions;
	}
	dev_dbg(ctx->dev, "SST Shim Ptr %p\n", ctx->shim);

	/* Shared SRAM */
	ctx->mailbox_add = pci_resource_start(pci, 2);
	ctx->mailbox = pcim_iomap(pci, 2, pci_resource_len(pci, 2));
	if (!ctx->mailbox) {
		ret = -EINVAL;
		goto do_release_regions;
	}
	dev_dbg(ctx->dev, "SRAM Ptr %p\n", ctx->mailbox);

	/* IRAM */
	ctx->iram_end = pci_resource_end(pci, 3);
	ctx->iram_base = pci_resource_start(pci, 3);
	ctx->iram = pcim_iomap(pci, 3, pci_resource_len(pci, 3));
	if (!ctx->iram) {
		ret = -EINVAL;
		goto do_release_regions;
	}
	dev_dbg(ctx->dev, "IRAM Ptr %p\n", ctx->iram);

	/* DRAM */
	ctx->dram_end = pci_resource_end(pci, 4);
	ctx->dram_base = pci_resource_start(pci, 4);
	ctx->dram = pcim_iomap(pci, 4, pci_resource_len(pci, 4));
	if (!ctx->dram) {
		ret = -EINVAL;
		goto do_release_regions;
	}
	dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram);
do_release_regions:
	pci_release_regions(pci);
	return ret;
}

/*
 * intel_sst_probe - PCI probe function
 *
 * @pci:	PCI device structure
 * @pci_id: PCI device ID structure
 *
 */
static int intel_sst_probe(struct pci_dev *pci,
			const struct pci_device_id *pci_id)
{
	int ret = 0;
	struct intel_sst_drv *sst_drv_ctx;
	struct sst_platform_info *sst_pdata = pci->dev.platform_data;

	dev_dbg(&pci->dev, "Probe for DID %x\n", pci->device);
	ret = sst_alloc_drv_context(&sst_drv_ctx, &pci->dev, pci->device);
	if (ret < 0)
		return ret;

	sst_drv_ctx->pdata = sst_pdata;
	sst_drv_ctx->irq_num = pci->irq;
	snprintf(sst_drv_ctx->firmware_name, sizeof(sst_drv_ctx->firmware_name),
			"%s%04x%s", "fw_sst_",
			sst_drv_ctx->dev_id, ".bin");

	ret = sst_context_init(sst_drv_ctx);
	if (ret < 0)
		return ret;

	/* Init the device */
	ret = pcim_enable_device(pci);
	if (ret) {
		dev_err(sst_drv_ctx->dev,
			"device can't be enabled. Returned err: %d\n", ret);
		goto do_free_drv_ctx;
	}
	sst_drv_ctx->pci = pci_dev_get(pci);
	ret = sst_platform_get_resources(sst_drv_ctx);
	if (ret < 0)
		goto do_free_drv_ctx;

	pci_set_drvdata(pci, sst_drv_ctx);
	sst_configure_runtime_pm(sst_drv_ctx);

	return ret;

do_free_drv_ctx:
	sst_context_cleanup(sst_drv_ctx);
	dev_err(sst_drv_ctx->dev, "Probe failed with %d\n", ret);
	return ret;
}

/**
 * intel_sst_remove - PCI remove function
 *
 * @pci:	PCI device structure
 *
 * This function is called by OS when a device is unloaded
 * This frees the interrupt etc
 */
static void intel_sst_remove(struct pci_dev *pci)
{
	struct intel_sst_drv *sst_drv_ctx = pci_get_drvdata(pci);

	sst_context_cleanup(sst_drv_ctx);
	pci_dev_put(sst_drv_ctx->pci);
	pci_release_regions(pci);
	pci_set_drvdata(pci, NULL);
}

/* PCI Routines */
static const struct pci_device_id intel_sst_ids[] = {
	{ PCI_VDEVICE(INTEL, SST_MRFLD_PCI_ID), 0},
	{ 0, }
};

static struct pci_driver sst_driver = {
	.name = SST_DRV_NAME,
	.id_table = intel_sst_ids,
	.probe = intel_sst_probe,
	.remove = intel_sst_remove,
#ifdef CONFIG_PM
	.driver = {
		.pm = &intel_sst_pm,
	},
#endif
};

module_pci_driver(sst_driver);

MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine PCI Driver");
MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
MODULE_AUTHOR("Dharageswari R <dharageswari.r@intel.com>");
MODULE_AUTHOR("KP Jeeja <jeeja.kp@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("sst");