[deliverable/linux.git] / sound / soc / intel / sst / sst_acpi.c

/*
 * sst_acpi.c - SST (LPE) driver init file for ACPI enumeration.
 *
 * Copyright (c) 2013, Intel Corporation.
 *
 *  Authors:	Ramesh Babu K V <Ramesh.Babu@intel.com>
 *  Authors:	Omair Mohammed Abdullah <omair.m.abdullah@intel.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 *
 */

#include <linux/module.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/miscdevice.h>
#include <linux/platform_device.h>
#include <linux/firmware.h>
#include <linux/pm_runtime.h>
#include <linux/pm_qos.h>
#include <linux/acpi.h>
#include <asm/platform_sst_audio.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <sound/compress_driver.h>
#include <acpi/acbuffer.h>
#include <acpi/platform/acenv.h>
#include <acpi/platform/aclinux.h>
#include <acpi/actypes.h>
#include <acpi/acpi_bus.h>
#include "../sst-mfld-platform.h"
#include "../sst-dsp.h"
#include "sst.h"

struct sst_machines {
	char codec_id[32];
	char board[32];
	char machine[32];
	void (*machine_quirk)(void);
	char firmware[32];
	struct sst_platform_info *pdata;

};

/* LPE viewpoint addresses */
#define SST_BYT_IRAM_PHY_START	0xff2c0000
#define SST_BYT_IRAM_PHY_END	0xff2d4000
#define SST_BYT_DRAM_PHY_START	0xff300000
#define SST_BYT_DRAM_PHY_END	0xff320000
#define SST_BYT_IMR_VIRT_START	0xc0000000 /* virtual addr in LPE */
#define SST_BYT_IMR_VIRT_END	0xc01fffff
#define SST_BYT_SHIM_PHY_ADDR	0xff340000
#define SST_BYT_MBOX_PHY_ADDR	0xff344000
#define SST_BYT_DMA0_PHY_ADDR	0xff298000
#define SST_BYT_DMA1_PHY_ADDR	0xff29c000
#define SST_BYT_SSP0_PHY_ADDR	0xff2a0000
#define SST_BYT_SSP2_PHY_ADDR	0xff2a2000

#define BYT_FW_MOD_TABLE_OFFSET	0x80000
#define BYT_FW_MOD_TABLE_SIZE	0x100
#define BYT_FW_MOD_OFFSET	(BYT_FW_MOD_TABLE_OFFSET + BYT_FW_MOD_TABLE_SIZE)

static const struct sst_info byt_fwparse_info = {
	.use_elf	= false,
	.max_streams	= 25,
	.iram_start	= SST_BYT_IRAM_PHY_START,
	.iram_end	= SST_BYT_IRAM_PHY_END,
	.iram_use	= true,
	.dram_start	= SST_BYT_DRAM_PHY_START,
	.dram_end	= SST_BYT_DRAM_PHY_END,
	.dram_use	= true,
	.imr_start	= SST_BYT_IMR_VIRT_START,
	.imr_end	= SST_BYT_IMR_VIRT_END,
	.imr_use	= true,
	.mailbox_start	= SST_BYT_MBOX_PHY_ADDR,
	.num_probes	= 0,
	.lpe_viewpt_rqd  = true,
};

static const struct sst_ipc_info byt_ipc_info = {
	.ipc_offset = 0,
	.mbox_recv_off = 0x400,
};

static const struct sst_lib_dnld_info  byt_lib_dnld_info = {
	.mod_base           = SST_BYT_IMR_VIRT_START,
	.mod_end            = SST_BYT_IMR_VIRT_END,
	.mod_table_offset   = BYT_FW_MOD_TABLE_OFFSET,
	.mod_table_size     = BYT_FW_MOD_TABLE_SIZE,
	.mod_ddr_dnld       = false,
};

static const struct sst_res_info byt_rvp_res_info = {
	.shim_offset = 0x140000,
	.shim_size = 0x000100,
	.shim_phy_addr = SST_BYT_SHIM_PHY_ADDR,
	.ssp0_offset = 0xa0000,
	.ssp0_size = 0x1000,
	.dma0_offset = 0x98000,
	.dma0_size = 0x4000,
	.dma1_offset = 0x9c000,
	.dma1_size = 0x4000,
	.iram_offset = 0x0c0000,
	.iram_size = 0x14000,
	.dram_offset = 0x100000,
	.dram_size = 0x28000,
	.mbox_offset = 0x144000,
	.mbox_size = 0x1000,
	.acpi_lpe_res_index = 0,
	.acpi_ddr_index = 2,
	.acpi_ipc_irq_index = 5,
};

struct sst_platform_info byt_rvp_platform_data = {
	.probe_data = &byt_fwparse_info,
	.ipc_info = &byt_ipc_info,
	.lib_info = &byt_lib_dnld_info,
	.res_info = &byt_rvp_res_info,
	.platform = "sst-mfld-platform",
};

static int sst_platform_get_resources(struct intel_sst_drv *ctx)
{
	struct resource *rsrc;
	struct platform_device *pdev = to_platform_device(ctx->dev);

	/* All ACPI resource request here */
	/* Get Shim addr */
	rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
					ctx->pdata->res_info->acpi_lpe_res_index);
	if (!rsrc) {
		dev_err(ctx->dev, "Invalid SHIM base from IFWI");
		return -EIO;
	}
	dev_info(ctx->dev, "LPE base: %#x size:%#x", (unsigned int) rsrc->start,
					(unsigned int)resource_size(rsrc));

	ctx->iram_base = rsrc->start + ctx->pdata->res_info->iram_offset;
	ctx->iram_end =  ctx->iram_base + ctx->pdata->res_info->iram_size - 1;
	dev_info(ctx->dev, "IRAM base: %#x", ctx->iram_base);
	ctx->iram = devm_ioremap_nocache(ctx->dev, ctx->iram_base,
					 ctx->pdata->res_info->iram_size);
	if (!ctx->iram) {
		dev_err(ctx->dev, "unable to map IRAM");
		return -EIO;
	}

	ctx->dram_base = rsrc->start + ctx->pdata->res_info->dram_offset;
	ctx->dram_end = ctx->dram_base + ctx->pdata->res_info->dram_size - 1;
	dev_info(ctx->dev, "DRAM base: %#x", ctx->dram_base);
	ctx->dram = devm_ioremap_nocache(ctx->dev, ctx->dram_base,
					 ctx->pdata->res_info->dram_size);
	if (!ctx->dram) {
		dev_err(ctx->dev, "unable to map DRAM");
		return -EIO;
	}

	ctx->shim_phy_add = rsrc->start + ctx->pdata->res_info->shim_offset;
	dev_info(ctx->dev, "SHIM base: %#x", ctx->shim_phy_add);
	ctx->shim = devm_ioremap_nocache(ctx->dev, ctx->shim_phy_add,
					ctx->pdata->res_info->shim_size);
	if (!ctx->shim) {
		dev_err(ctx->dev, "unable to map SHIM");
		return -EIO;
	}

	/* reassign physical address to LPE viewpoint address */
	ctx->shim_phy_add = ctx->pdata->res_info->shim_phy_addr;

	/* Get mailbox addr */
	ctx->mailbox_add = rsrc->start + ctx->pdata->res_info->mbox_offset;
	dev_info(ctx->dev, "Mailbox base: %#x", ctx->mailbox_add);
	ctx->mailbox = devm_ioremap_nocache(ctx->dev, ctx->mailbox_add,
					    ctx->pdata->res_info->mbox_size);
	if (!ctx->mailbox) {
		dev_err(ctx->dev, "unable to map mailbox");
		return -EIO;
	}

	/* reassign physical address to LPE viewpoint address */
	ctx->mailbox_add = ctx->info.mailbox_start;

	rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
					ctx->pdata->res_info->acpi_ddr_index);
	if (!rsrc) {
		dev_err(ctx->dev, "Invalid DDR base from IFWI");
		return -EIO;
	}
	ctx->ddr_base = rsrc->start;
	ctx->ddr_end = rsrc->end;
	dev_info(ctx->dev, "DDR base: %#x", ctx->ddr_base);
	ctx->ddr = devm_ioremap_nocache(ctx->dev, ctx->ddr_base,
					resource_size(rsrc));
	if (!ctx->ddr) {
		dev_err(ctx->dev, "unable to map DDR");
		return -EIO;
	}

	/* Find the IRQ */
	ctx->irq_num = platform_get_irq(pdev,
				ctx->pdata->res_info->acpi_ipc_irq_index);
	return 0;
}

static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level,
				       void *context, void **ret)
{
	*(bool *)context = true;
	return AE_OK;
}

static struct sst_machines *sst_acpi_find_machine(
	struct sst_machines *machines)
{
	struct sst_machines *mach;
	bool found = false;

	for (mach = machines; mach->codec_id; mach++)
		if (ACPI_SUCCESS(acpi_get_devices(mach->codec_id,
						  sst_acpi_mach_match,
						  &found, NULL)) && found)
			return mach;

	return NULL;
}

int sst_acpi_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	int ret = 0;
	struct intel_sst_drv *ctx;
	const struct acpi_device_id *id;
	struct sst_machines *mach;
	struct platform_device *mdev;
	struct platform_device *plat_dev;
	unsigned int dev_id;

	id = acpi_match_device(dev->driver->acpi_match_table, dev);
	if (!id)
		return -ENODEV;
	dev_dbg(dev, "for %s", id->id);

	mach = (struct sst_machines *)id->driver_data;
	mach = sst_acpi_find_machine(mach);
	if (mach == NULL) {
		dev_err(dev, "No matching machine driver found\n");
		return -ENODEV;
	}

	ret = kstrtouint(id->id, 16, &dev_id);
	if (ret < 0) {
		dev_err(dev, "Unique device id conversion error: %d\n", ret);
		return ret;
	}

	dev_dbg(dev, "ACPI device id: %x\n", dev_id);

	plat_dev = platform_device_register_data(dev, mach->pdata->platform, -1, NULL, 0);
	if (plat_dev == NULL) {
		dev_err(dev, "Failed to create machine device: %s\n", mach->pdata->platform);
		return -ENODEV;
	}

	/* Create platform device for sst machine driver */
	mdev = platform_device_register_data(dev, mach->machine, -1, NULL, 0);
	if (mdev == NULL) {
		dev_err(dev, "Failed to create machine device: %s\n", mach->machine);
		return -ENODEV;
	}

	ret = sst_alloc_drv_context(&ctx, dev, dev_id);
	if (ret < 0)
		return ret;

	/* Fill sst platform data */
	ctx->pdata = mach->pdata;
	strcpy(ctx->firmware_name, mach->firmware);

	ret = sst_platform_get_resources(ctx);
	if (ret)
		return ret;

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

	/* need to save shim registers in BYT */
	ctx->shim_regs64 = devm_kzalloc(ctx->dev, sizeof(*ctx->shim_regs64),
					GFP_KERNEL);
	if (!ctx->shim_regs64) {
		return -ENOMEM;
		goto do_sst_cleanup;
	}

	sst_configure_runtime_pm(ctx);
	platform_set_drvdata(pdev, ctx);
	return ret;

do_sst_cleanup:
	sst_context_cleanup(ctx);
	platform_set_drvdata(pdev, NULL);
	dev_err(ctx->dev, "failed with %d\n", ret);
	return ret;
}

/**
* intel_sst_remove - remove function
*
* @pdev:	platform device structure
*
* This function is called by OS when a device is unloaded
* This frees the interrupt etc
*/
int sst_acpi_remove(struct platform_device *pdev)
{
	struct intel_sst_drv *ctx;

	ctx = platform_get_drvdata(pdev);
	sst_context_cleanup(ctx);
	platform_set_drvdata(pdev, NULL);
	return 0;
}

static struct sst_machines sst_acpi_bytcr[] = {
	{"10EC5640", "T100", "bytt100_rt5640", NULL, "fw_sst_0f28.bin",
						&byt_rvp_platform_data },
	{},
};

static const struct acpi_device_id sst_acpi_ids[] = {
	{ "80860F28", (unsigned long)&sst_acpi_bytcr},
	{ },
};

MODULE_DEVICE_TABLE(acpi, sst_acpi_ids);

static struct platform_driver sst_acpi_driver = {
	.driver = {
		.name			= "intel_sst_acpi",
		.owner			= THIS_MODULE,
		.acpi_match_table	= ACPI_PTR(sst_acpi_ids),
		.pm			= &intel_sst_pm,
	},
	.probe	= sst_acpi_probe,
	.remove	= sst_acpi_remove,
};

module_platform_driver(sst_acpi_driver);

MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine ACPI Driver");
MODULE_AUTHOR("Ramesh Babu K V");
MODULE_AUTHOR("Omair Mohammed Abdullah");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("sst");
Commit	Line	Data
336cfbb0 VK	1	/*
	2	* sst_acpi.c - SST (LPE) driver init file for ACPI enumeration.
	3	*
	4	* Copyright (c) 2013, Intel Corporation.
	5	*
	6	* Authors: Ramesh Babu K V <Ramesh.Babu@intel.com>
	7	* Authors: Omair Mohammed Abdullah <omair.m.abdullah@intel.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms and conditions of the GNU General Public License,
	11	* version 2, as published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope it will be useful, but WITHOUT
	14	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	15	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	16	* more details.
	17	*
	18	*
	19	*/
	20
	21	#include <linux/module.h>
	22	#include <linux/fs.h>
	23	#include <linux/interrupt.h>
	24	#include <linux/slab.h>
	25	#include <linux/io.h>
	26	#include <linux/miscdevice.h>
	27	#include <linux/platform_device.h>
	28	#include <linux/firmware.h>
	29	#include <linux/pm_runtime.h>
	30	#include <linux/pm_qos.h>
	31	#include <linux/acpi.h>
	32	#include <asm/platform_sst_audio.h>
	33	#include <sound/core.h>
	34	#include <sound/soc.h>
	35	#include <sound/compress_driver.h>
	36	#include <acpi/acbuffer.h>
	37	#include <acpi/platform/acenv.h>
	38	#include <acpi/platform/aclinux.h>
	39	#include <acpi/actypes.h>
	40	#include <acpi/acpi_bus.h>
	41	#include "../sst-mfld-platform.h"
	42	#include "../sst-dsp.h"
	43	#include "sst.h"
	44
	45	struct sst_machines {
	46	char codec_id[32];
	47	char board[32];
	48	char machine[32];
	49	void (*machine_quirk)(void);
	50	char firmware[32];
	51	struct sst_platform_info *pdata;
	52
	53	};
	54
	55	/* LPE viewpoint addresses */
	56	#define SST_BYT_IRAM_PHY_START 0xff2c0000
	57	#define SST_BYT_IRAM_PHY_END 0xff2d4000
	58	#define SST_BYT_DRAM_PHY_START 0xff300000
	59	#define SST_BYT_DRAM_PHY_END 0xff320000
	60	#define SST_BYT_IMR_VIRT_START 0xc0000000 /* virtual addr in LPE */
	61	#define SST_BYT_IMR_VIRT_END 0xc01fffff
	62	#define SST_BYT_SHIM_PHY_ADDR 0xff340000
	63	#define SST_BYT_MBOX_PHY_ADDR 0xff344000
	64	#define SST_BYT_DMA0_PHY_ADDR 0xff298000
65	#define SST_BYT_DMA1_PHY_ADDR 0xff29c000
66	#define SST_BYT_SSP0_PHY_ADDR 0xff2a0000
67	#define SST_BYT_SSP2_PHY_ADDR 0xff2a2000
68
69	#define BYT_FW_MOD_TABLE_OFFSET 0x80000
70	#define BYT_FW_MOD_TABLE_SIZE 0x100
71	#define BYT_FW_MOD_OFFSET (BYT_FW_MOD_TABLE_OFFSET + BYT_FW_MOD_TABLE_SIZE)
72
73	static const struct sst_info byt_fwparse_info = {
74	.use_elf = false,
75	.max_streams = 25,
76	.iram_start = SST_BYT_IRAM_PHY_START,
77	.iram_end = SST_BYT_IRAM_PHY_END,
78	.iram_use = true,
79	.dram_start = SST_BYT_DRAM_PHY_START,
80	.dram_end = SST_BYT_DRAM_PHY_END,
81	.dram_use = true,
82	.imr_start = SST_BYT_IMR_VIRT_START,
83	.imr_end = SST_BYT_IMR_VIRT_END,
84	.imr_use = true,
85	.mailbox_start = SST_BYT_MBOX_PHY_ADDR,
86	.num_probes = 0,
87	.lpe_viewpt_rqd = true,
88	};
89
90	static const struct sst_ipc_info byt_ipc_info = {
91	.ipc_offset = 0,
92	.mbox_recv_off = 0x400,
93	};
94
95	static const struct sst_lib_dnld_info byt_lib_dnld_info = {
96	.mod_base = SST_BYT_IMR_VIRT_START,
97	.mod_end = SST_BYT_IMR_VIRT_END,
98	.mod_table_offset = BYT_FW_MOD_TABLE_OFFSET,
99	.mod_table_size = BYT_FW_MOD_TABLE_SIZE,
100	.mod_ddr_dnld = false,
101	};
102
103	static const struct sst_res_info byt_rvp_res_info = {
104	.shim_offset = 0x140000,
105	.shim_size = 0x000100,
106	.shim_phy_addr = SST_BYT_SHIM_PHY_ADDR,
107	.ssp0_offset = 0xa0000,
108	.ssp0_size = 0x1000,
109	.dma0_offset = 0x98000,
110	.dma0_size = 0x4000,
111	.dma1_offset = 0x9c000,
112	.dma1_size = 0x4000,
113	.iram_offset = 0x0c0000,
114	.iram_size = 0x14000,
115	.dram_offset = 0x100000,
116	.dram_size = 0x28000,
117	.mbox_offset = 0x144000,
118	.mbox_size = 0x1000,
119	.acpi_lpe_res_index = 0,
120	.acpi_ddr_index = 2,
121	.acpi_ipc_irq_index = 5,
122	};
123
124	struct sst_platform_info byt_rvp_platform_data = {
125	.probe_data = &byt_fwparse_info,
126	.ipc_info = &byt_ipc_info,
127	.lib_info = &byt_lib_dnld_info,
128	.res_info = &byt_rvp_res_info,
129	.platform = "sst-mfld-platform",
130	};
131
132	static int sst_platform_get_resources(struct intel_sst_drv *ctx)
133	{
134	struct resource *rsrc;
135	struct platform_device *pdev = to_platform_device(ctx->dev);
136
137	/* All ACPI resource request here */
138	/* Get Shim addr */
139	rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
140	ctx->pdata->res_info->acpi_lpe_res_index);
141	if (!rsrc) {
142	dev_err(ctx->dev, "Invalid SHIM base from IFWI");
143	return -EIO;
144	}
145	dev_info(ctx->dev, "LPE base: %#x size:%#x", (unsigned int) rsrc->start,
146	(unsigned int)resource_size(rsrc));
147
148	ctx->iram_base = rsrc->start + ctx->pdata->res_info->iram_offset;
149	ctx->iram_end = ctx->iram_base + ctx->pdata->res_info->iram_size - 1;
150	dev_info(ctx->dev, "IRAM base: %#x", ctx->iram_base);
151	ctx->iram = devm_ioremap_nocache(ctx->dev, ctx->iram_base,
152	ctx->pdata->res_info->iram_size);
153	if (!ctx->iram) {
154	dev_err(ctx->dev, "unable to map IRAM");
155	return -EIO;
156	}
157
158	ctx->dram_base = rsrc->start + ctx->pdata->res_info->dram_offset;
159	ctx->dram_end = ctx->dram_base + ctx->pdata->res_info->dram_size - 1;
160	dev_info(ctx->dev, "DRAM base: %#x", ctx->dram_base);
161	ctx->dram = devm_ioremap_nocache(ctx->dev, ctx->dram_base,
162	ctx->pdata->res_info->dram_size);
163	if (!ctx->dram) {
164	dev_err(ctx->dev, "unable to map DRAM");
165	return -EIO;
166	}
167
168	ctx->shim_phy_add = rsrc->start + ctx->pdata->res_info->shim_offset;
169	dev_info(ctx->dev, "SHIM base: %#x", ctx->shim_phy_add);
170	ctx->shim = devm_ioremap_nocache(ctx->dev, ctx->shim_phy_add,
171	ctx->pdata->res_info->shim_size);
172	if (!ctx->shim) {
173	dev_err(ctx->dev, "unable to map SHIM");
174	return -EIO;
175	}
176
177	/* reassign physical address to LPE viewpoint address */
178	ctx->shim_phy_add = ctx->pdata->res_info->shim_phy_addr;
179
180	/* Get mailbox addr */
181	ctx->mailbox_add = rsrc->start + ctx->pdata->res_info->mbox_offset;
182	dev_info(ctx->dev, "Mailbox base: %#x", ctx->mailbox_add);
183	ctx->mailbox = devm_ioremap_nocache(ctx->dev, ctx->mailbox_add,
184	ctx->pdata->res_info->mbox_size);
185	if (!ctx->mailbox) {
186	dev_err(ctx->dev, "unable to map mailbox");
187	return -EIO;
188	}
189
190	/* reassign physical address to LPE viewpoint address */
191	ctx->mailbox_add = ctx->info.mailbox_start;
192
193	rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
194	ctx->pdata->res_info->acpi_ddr_index);
195	if (!rsrc) {
196	dev_err(ctx->dev, "Invalid DDR base from IFWI");
197	return -EIO;
198	}
199	ctx->ddr_base = rsrc->start;
200	ctx->ddr_end = rsrc->end;
201	dev_info(ctx->dev, "DDR base: %#x", ctx->ddr_base);
202	ctx->ddr = devm_ioremap_nocache(ctx->dev, ctx->ddr_base,
203	resource_size(rsrc));
204	if (!ctx->ddr) {
205	dev_err(ctx->dev, "unable to map DDR");
206	return -EIO;
207	}
208
209	/* Find the IRQ */
210	ctx->irq_num = platform_get_irq(pdev,
211	ctx->pdata->res_info->acpi_ipc_irq_index);
212	return 0;
213	}
214
215	static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level,
216	void context, void *ret)
217	{
218	(bool )context = true;
219	return AE_OK;
220	}
221
222	static struct sst_machines *sst_acpi_find_machine(
223	struct sst_machines *machines)
224	{
225	struct sst_machines *mach;
226	bool found = false;
227
228	for (mach = machines; mach->codec_id; mach++)
229	if (ACPI_SUCCESS(acpi_get_devices(mach->codec_id,
230	sst_acpi_mach_match,
231	&found, NULL)) && found)
232	return mach;
233
234	return NULL;
235	}
236
237	int sst_acpi_probe(struct platform_device *pdev)
238	{
239	struct device *dev = &pdev->dev;
240	int ret = 0;
241	struct intel_sst_drv *ctx;
242	const struct acpi_device_id *id;
243	struct sst_machines *mach;
244	struct platform_device *mdev;
245	struct platform_device *plat_dev;
246	unsigned int dev_id;
247
248	id = acpi_match_device(dev->driver->acpi_match_table, dev);
249	if (!id)
250	return -ENODEV;
251	dev_dbg(dev, "for %s", id->id);
252
253	mach = (struct sst_machines *)id->driver_data;
254	mach = sst_acpi_find_machine(mach);
255	if (mach == NULL) {
256	dev_err(dev, "No matching machine driver found\n");
257	return -ENODEV;
258	}
259
260	ret = kstrtouint(id->id, 16, &dev_id);
261	if (ret < 0) {
262	dev_err(dev, "Unique device id conversion error: %d\n", ret);
263	return ret;
264	}
265
266	dev_dbg(dev, "ACPI device id: %x\n", dev_id);
267
268	plat_dev = platform_device_register_data(dev, mach->pdata->platform, -1, NULL, 0);
269	if (plat_dev == NULL) {
270	dev_err(dev, "Failed to create machine device: %s\n", mach->pdata->platform);
271	return -ENODEV;
272	}
273
274	/* Create platform device for sst machine driver */
275	mdev = platform_device_register_data(dev, mach->machine, -1, NULL, 0);
276	if (mdev == NULL) {
277	dev_err(dev, "Failed to create machine device: %s\n", mach->machine);
278	return -ENODEV;
279	}
280
281	ret = sst_alloc_drv_context(&ctx, dev, dev_id);
282	if (ret < 0)
283	return ret;
284
285	/* Fill sst platform data */
286	ctx->pdata = mach->pdata;
287	strcpy(ctx->firmware_name, mach->firmware);
288
289	ret = sst_platform_get_resources(ctx);
290	if (ret)
291	return ret;
292
293	ret = sst_context_init(ctx);
294	if (ret < 0)
295	return ret;
296
297	/* need to save shim registers in BYT */
298	ctx->shim_regs64 = devm_kzalloc(ctx->dev, sizeof(*ctx->shim_regs64),
299	GFP_KERNEL);
300	if (!ctx->shim_regs64) {
301	return -ENOMEM;
302	goto do_sst_cleanup;
303	}
304
305	sst_configure_runtime_pm(ctx);
306	platform_set_drvdata(pdev, ctx);
307	return ret;
308
309	do_sst_cleanup:
310	sst_context_cleanup(ctx);
311	platform_set_drvdata(pdev, NULL);
312	dev_err(ctx->dev, "failed with %d\n", ret);
313	return ret;
314	}
315
316	/**
317	* intel_sst_remove - remove function
318	*
319	* @pdev: platform device structure
320	*
321	* This function is called by OS when a device is unloaded
322	* This frees the interrupt etc
323	*/
324	int sst_acpi_remove(struct platform_device *pdev)
325	{
326	struct intel_sst_drv *ctx;
327
328	ctx = platform_get_drvdata(pdev);
329	sst_context_cleanup(ctx);
330	platform_set_drvdata(pdev, NULL);
331	return 0;
332	}
333
334	static struct sst_machines sst_acpi_bytcr[] = {
335	{"10EC5640", "T100", "bytt100_rt5640", NULL, "fw_sst_0f28.bin",
336	&byt_rvp_platform_data },
337	{},
338	};
339
340	static const struct acpi_device_id sst_acpi_ids[] = {
341	{ "80860F28", (unsigned long)&sst_acpi_bytcr},
342	{ },
343	};
344
eb826a35 ML	345	MODULE_DEVICE_TABLE(acpi, sst_acpi_ids);
eb826a35 ML	346
336cfbb0 VK	347	static struct platform_driver sst_acpi_driver = {
	348	.driver = {
	349	.name = "intel_sst_acpi",
	350	.owner = THIS_MODULE,
	351	.acpi_match_table = ACPI_PTR(sst_acpi_ids),
	352	.pm = &intel_sst_pm,
	353	},
	354	.probe = sst_acpi_probe,
	355	.remove = sst_acpi_remove,
	356	};
	357
	358	module_platform_driver(sst_acpi_driver);
	359
	360	MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine ACPI Driver");
	361	MODULE_AUTHOR("Ramesh Babu K V");
	362	MODULE_AUTHOR("Omair Mohammed Abdullah");
	363	MODULE_LICENSE("GPL v2");
	364	MODULE_ALIAS("sst");