2 * Intel Smart Sound Technology (SST) DSP Core Driver
4 * Copyright (C) 2013, Intel Corporation. All rights reserved.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
17 #include <linux/slab.h>
18 #include <linux/export.h>
19 #include <linux/interrupt.h>
20 #include <linux/module.h>
21 #include <linux/platform_device.h>
24 #include "sst-dsp-priv.h"
26 #define CREATE_TRACE_POINTS
27 #include <trace/events/intel-sst.h>
30 void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value)
34 spin_lock_irqsave(&sst->spinlock, flags);
35 sst->ops->write(sst->addr.shim, offset, value);
36 spin_unlock_irqrestore(&sst->spinlock, flags);
38 EXPORT_SYMBOL_GPL(sst_dsp_shim_write);
40 u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset)
45 spin_lock_irqsave(&sst->spinlock, flags);
46 val = sst->ops->read(sst->addr.shim, offset);
47 spin_unlock_irqrestore(&sst->spinlock, flags);
51 EXPORT_SYMBOL_GPL(sst_dsp_shim_read);
53 void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value)
57 spin_lock_irqsave(&sst->spinlock, flags);
58 sst->ops->write64(sst->addr.shim, offset, value);
59 spin_unlock_irqrestore(&sst->spinlock, flags);
61 EXPORT_SYMBOL_GPL(sst_dsp_shim_write64);
63 u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset)
68 spin_lock_irqsave(&sst->spinlock, flags);
69 val = sst->ops->read64(sst->addr.shim, offset);
70 spin_unlock_irqrestore(&sst->spinlock, flags);
74 EXPORT_SYMBOL_GPL(sst_dsp_shim_read64);
76 void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value)
78 sst->ops->write(sst->addr.shim, offset, value);
80 EXPORT_SYMBOL_GPL(sst_dsp_shim_write_unlocked);
82 u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset)
84 return sst->ops->read(sst->addr.shim, offset);
86 EXPORT_SYMBOL_GPL(sst_dsp_shim_read_unlocked);
88 void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value)
90 sst->ops->write64(sst->addr.shim, offset, value);
92 EXPORT_SYMBOL_GPL(sst_dsp_shim_write64_unlocked);
94 u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset)
96 return sst->ops->read64(sst->addr.shim, offset);
98 EXPORT_SYMBOL_GPL(sst_dsp_shim_read64_unlocked);
100 int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset,
104 unsigned int old, new;
107 ret = sst_dsp_shim_read_unlocked(sst, offset);
110 new = (old & (~mask)) | (value & mask);
112 change = (old != new);
114 sst_dsp_shim_write_unlocked(sst, offset, new);
118 EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_unlocked);
120 int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset,
126 old = sst_dsp_shim_read64_unlocked(sst, offset);
128 new = (old & (~mask)) | (value & mask);
130 change = (old != new);
132 sst_dsp_shim_write64_unlocked(sst, offset, new);
136 EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked);
138 int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset,
144 spin_lock_irqsave(&sst->spinlock, flags);
145 change = sst_dsp_shim_update_bits_unlocked(sst, offset, mask, value);
146 spin_unlock_irqrestore(&sst->spinlock, flags);
149 EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits);
151 int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset,
157 spin_lock_irqsave(&sst->spinlock, flags);
158 change = sst_dsp_shim_update_bits64_unlocked(sst, offset, mask, value);
159 spin_unlock_irqrestore(&sst->spinlock, flags);
162 EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64);
164 void sst_dsp_dump(struct sst_dsp *sst)
168 EXPORT_SYMBOL_GPL(sst_dsp_dump);
170 void sst_dsp_reset(struct sst_dsp *sst)
172 sst->ops->reset(sst);
174 EXPORT_SYMBOL_GPL(sst_dsp_reset);
176 int sst_dsp_boot(struct sst_dsp *sst)
181 EXPORT_SYMBOL_GPL(sst_dsp_boot);
183 void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg)
185 sst_dsp_shim_write_unlocked(dsp, SST_IPCX, msg | SST_IPCX_BUSY);
186 trace_sst_ipc_msg_tx(msg);
188 EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_tx);
190 u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp)
194 msg = sst_dsp_shim_read_unlocked(dsp, SST_IPCX);
195 trace_sst_ipc_msg_rx(msg);
199 EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_rx);
201 int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset, size_t inbox_size,
202 u32 outbox_offset, size_t outbox_size)
204 sst->mailbox.in_base = sst->addr.lpe + inbox_offset;
205 sst->mailbox.out_base = sst->addr.lpe + outbox_offset;
206 sst->mailbox.in_size = inbox_size;
207 sst->mailbox.out_size = outbox_size;
210 EXPORT_SYMBOL_GPL(sst_dsp_mailbox_init);
212 void sst_dsp_outbox_write(struct sst_dsp *sst, void *message, size_t bytes)
216 trace_sst_ipc_outbox_write(bytes);
218 memcpy_toio(sst->mailbox.out_base, message, bytes);
220 for (i = 0; i < bytes; i += 4)
221 trace_sst_ipc_outbox_wdata(i, *(u32 *)(message + i));
223 EXPORT_SYMBOL_GPL(sst_dsp_outbox_write);
225 void sst_dsp_outbox_read(struct sst_dsp *sst, void *message, size_t bytes)
229 trace_sst_ipc_outbox_read(bytes);
231 memcpy_fromio(message, sst->mailbox.out_base, bytes);
233 for (i = 0; i < bytes; i += 4)
234 trace_sst_ipc_outbox_rdata(i, *(u32 *)(message + i));
236 EXPORT_SYMBOL_GPL(sst_dsp_outbox_read);
238 void sst_dsp_inbox_write(struct sst_dsp *sst, void *message, size_t bytes)
242 trace_sst_ipc_inbox_write(bytes);
244 memcpy_toio(sst->mailbox.in_base, message, bytes);
246 for (i = 0; i < bytes; i += 4)
247 trace_sst_ipc_inbox_wdata(i, *(u32 *)(message + i));
249 EXPORT_SYMBOL_GPL(sst_dsp_inbox_write);
251 void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes)
255 trace_sst_ipc_inbox_read(bytes);
257 memcpy_fromio(message, sst->mailbox.in_base, bytes);
259 for (i = 0; i < bytes; i += 4)
260 trace_sst_ipc_inbox_rdata(i, *(u32 *)(message + i));
262 EXPORT_SYMBOL_GPL(sst_dsp_inbox_read);
264 struct sst_dsp *sst_dsp_new(struct device *dev,
265 struct sst_dsp_device *sst_dev, struct sst_pdata *pdata)
270 dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id);
272 sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL);
276 spin_lock_init(&sst->spinlock);
277 mutex_init(&sst->mutex);
279 sst->thread_context = sst_dev->thread_context;
280 sst->sst_dev = sst_dev;
282 sst->irq = pdata->irq;
283 sst->ops = sst_dev->ops;
285 INIT_LIST_HEAD(&sst->used_block_list);
286 INIT_LIST_HEAD(&sst->free_block_list);
287 INIT_LIST_HEAD(&sst->module_list);
288 INIT_LIST_HEAD(&sst->fw_list);
290 /* Initialise SST Audio DSP */
291 if (sst->ops->init) {
292 err = sst->ops->init(sst, pdata);
297 /* Register the ISR */
298 err = request_threaded_irq(sst->irq, sst->ops->irq_handler,
299 sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
311 EXPORT_SYMBOL_GPL(sst_dsp_new);
313 void sst_dsp_free(struct sst_dsp *sst)
315 free_irq(sst->irq, sst);
319 EXPORT_SYMBOL_GPL(sst_dsp_free);
321 /* Module information */
322 MODULE_AUTHOR("Liam Girdwood");
323 MODULE_DESCRIPTION("Intel SST Core");
324 MODULE_LICENSE("GPL v2");