1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2020 Intel Corporation
4 //
5 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
6 //
7 // Special thanks to:
8 // Marcin Barlik <marcin.barlik@intel.com>
9 // Piotr Papierkowski <piotr.papierkowski@intel.com>
10 //
11 // for sharing LPT-LP and WTP-LP AudioDSP architecture expertise and
12 // helping backtrack its historical background
13 //
14
15 #include <linux/acpi.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/interrupt.h>
18 #include <linux/module.h>
19 #include <linux/pci.h>
20 #include <linux/platform_device.h>
21 #include <linux/pm_runtime.h>
22 #include <sound/intel-dsp-config.h>
23 #include <sound/soc.h>
24 #include <sound/soc-acpi.h>
25 #include "core.h"
26 #include "registers.h"
27
28 #define CREATE_TRACE_POINTS
29 #include "trace.h"
30
catpt_suspend(struct device * dev)31 static int __maybe_unused catpt_suspend(struct device *dev)
32 {
33 struct catpt_dev *cdev = dev_get_drvdata(dev);
34 struct dma_chan *chan;
35 int ret;
36
37 chan = catpt_dma_request_config_chan(cdev);
38 if (IS_ERR(chan))
39 return PTR_ERR(chan);
40
41 memset(&cdev->dx_ctx, 0, sizeof(cdev->dx_ctx));
42 ret = catpt_ipc_enter_dxstate(cdev, CATPT_DX_STATE_D3, &cdev->dx_ctx);
43 if (ret) {
44 ret = CATPT_IPC_ERROR(ret);
45 goto release_dma_chan;
46 }
47
48 ret = catpt_dsp_stall(cdev, true);
49 if (ret)
50 goto release_dma_chan;
51
52 ret = catpt_store_memdumps(cdev, chan);
53 if (ret) {
54 dev_err(cdev->dev, "store memdumps failed: %d\n", ret);
55 goto release_dma_chan;
56 }
57
58 ret = catpt_store_module_states(cdev, chan);
59 if (ret) {
60 dev_err(cdev->dev, "store module states failed: %d\n", ret);
61 goto release_dma_chan;
62 }
63
64 ret = catpt_store_streams_context(cdev, chan);
65 if (ret)
66 dev_err(cdev->dev, "store streams ctx failed: %d\n", ret);
67
68 release_dma_chan:
69 dma_release_channel(chan);
70 if (ret)
71 return ret;
72 return catpt_dsp_power_down(cdev);
73 }
74
catpt_resume(struct device * dev)75 static int __maybe_unused catpt_resume(struct device *dev)
76 {
77 struct catpt_dev *cdev = dev_get_drvdata(dev);
78 int ret, i;
79
80 ret = catpt_dsp_power_up(cdev);
81 if (ret)
82 return ret;
83
84 if (!try_module_get(dev->driver->owner)) {
85 dev_info(dev, "module unloading, skipping fw boot\n");
86 return 0;
87 }
88 module_put(dev->driver->owner);
89
90 ret = catpt_boot_firmware(cdev, true);
91 if (ret) {
92 dev_err(cdev->dev, "boot firmware failed: %d\n", ret);
93 return ret;
94 }
95
96 /* reconfigure SSP devices after Dx transition */
97 for (i = 0; i < CATPT_SSP_COUNT; i++) {
98 if (cdev->devfmt[i].iface == UINT_MAX)
99 continue;
100
101 ret = catpt_ipc_set_device_format(cdev, &cdev->devfmt[i]);
102 if (ret)
103 return CATPT_IPC_ERROR(ret);
104 }
105
106 return 0;
107 }
108
catpt_runtime_suspend(struct device * dev)109 static int __maybe_unused catpt_runtime_suspend(struct device *dev)
110 {
111 if (!try_module_get(dev->driver->owner)) {
112 dev_info(dev, "module unloading, skipping suspend\n");
113 return 0;
114 }
115 module_put(dev->driver->owner);
116
117 return catpt_suspend(dev);
118 }
119
catpt_runtime_resume(struct device * dev)120 static int __maybe_unused catpt_runtime_resume(struct device *dev)
121 {
122 return catpt_resume(dev);
123 }
124
125 static const struct dev_pm_ops catpt_dev_pm = {
126 SET_SYSTEM_SLEEP_PM_OPS(catpt_suspend, catpt_resume)
127 SET_RUNTIME_PM_OPS(catpt_runtime_suspend, catpt_runtime_resume, NULL)
128 };
129
130 /* machine board owned by CATPT is removed with this hook */
board_pdev_unregister(void * data)131 static void board_pdev_unregister(void *data)
132 {
133 platform_device_unregister(data);
134 }
135
catpt_register_board(struct catpt_dev * cdev)136 static int catpt_register_board(struct catpt_dev *cdev)
137 {
138 const struct catpt_spec *spec = cdev->spec;
139 struct snd_soc_acpi_mach *mach;
140 struct platform_device *board;
141
142 mach = snd_soc_acpi_find_machine(spec->machines);
143 if (!mach) {
144 dev_info(cdev->dev, "no machines present\n");
145 return 0;
146 }
147
148 mach->mach_params.platform = "catpt-platform";
149 board = platform_device_register_data(NULL, mach->drv_name,
150 PLATFORM_DEVID_NONE,
151 (const void *)mach, sizeof(*mach));
152 if (IS_ERR(board)) {
153 dev_err(cdev->dev, "board register failed\n");
154 return PTR_ERR(board);
155 }
156
157 return devm_add_action_or_reset(cdev->dev, board_pdev_unregister,
158 board);
159 }
160
catpt_probe_components(struct catpt_dev * cdev)161 static int catpt_probe_components(struct catpt_dev *cdev)
162 {
163 int ret;
164
165 ret = catpt_dsp_power_up(cdev);
166 if (ret)
167 return ret;
168
169 ret = catpt_dmac_probe(cdev);
170 if (ret) {
171 dev_err(cdev->dev, "DMAC probe failed: %d\n", ret);
172 goto err_dmac_probe;
173 }
174
175 ret = catpt_first_boot_firmware(cdev);
176 if (ret) {
177 dev_err(cdev->dev, "first fw boot failed: %d\n", ret);
178 goto err_boot_fw;
179 }
180
181 ret = catpt_register_plat_component(cdev);
182 if (ret) {
183 dev_err(cdev->dev, "register plat comp failed: %d\n", ret);
184 goto err_boot_fw;
185 }
186
187 ret = catpt_register_board(cdev);
188 if (ret) {
189 dev_err(cdev->dev, "register board failed: %d\n", ret);
190 goto err_reg_board;
191 }
192
193 /* reflect actual ADSP state in pm_runtime */
194 pm_runtime_set_active(cdev->dev);
195
196 pm_runtime_set_autosuspend_delay(cdev->dev, 2000);
197 pm_runtime_use_autosuspend(cdev->dev);
198 pm_runtime_mark_last_busy(cdev->dev);
199 pm_runtime_enable(cdev->dev);
200 return 0;
201
202 err_reg_board:
203 snd_soc_unregister_component(cdev->dev);
204 err_boot_fw:
205 catpt_dmac_remove(cdev);
206 err_dmac_probe:
207 catpt_dsp_power_down(cdev);
208
209 return ret;
210 }
211
catpt_dev_init(struct catpt_dev * cdev,struct device * dev,const struct catpt_spec * spec)212 static void catpt_dev_init(struct catpt_dev *cdev, struct device *dev,
213 const struct catpt_spec *spec)
214 {
215 cdev->dev = dev;
216 cdev->spec = spec;
217 init_completion(&cdev->fw_ready);
218 INIT_LIST_HEAD(&cdev->stream_list);
219 spin_lock_init(&cdev->list_lock);
220 mutex_init(&cdev->clk_mutex);
221
222 /*
223 * Mark both device formats as uninitialized. Once corresponding
224 * cpu_dai's pcm is created, proper values are assigned.
225 */
226 cdev->devfmt[CATPT_SSP_IFACE_0].iface = UINT_MAX;
227 cdev->devfmt[CATPT_SSP_IFACE_1].iface = UINT_MAX;
228
229 catpt_ipc_init(&cdev->ipc, dev);
230
231 catpt_sram_init(&cdev->dram, spec->host_dram_offset,
232 catpt_dram_size(cdev));
233 catpt_sram_init(&cdev->iram, spec->host_iram_offset,
234 catpt_iram_size(cdev));
235 }
236
catpt_acpi_probe(struct platform_device * pdev)237 static int catpt_acpi_probe(struct platform_device *pdev)
238 {
239 const struct catpt_spec *spec;
240 struct catpt_dev *cdev;
241 struct device *dev = &pdev->dev;
242 const struct acpi_device_id *id;
243 struct resource *res;
244 int ret;
245
246 id = acpi_match_device(dev->driver->acpi_match_table, dev);
247 if (!id)
248 return -ENODEV;
249
250 ret = snd_intel_acpi_dsp_driver_probe(dev, id->id);
251 if (ret != SND_INTEL_DSP_DRIVER_ANY && ret != SND_INTEL_DSP_DRIVER_SST) {
252 dev_dbg(dev, "CATPT ACPI driver not selected, aborting probe\n");
253 return -ENODEV;
254 }
255
256 cdev = devm_kzalloc(dev, sizeof(*cdev), GFP_KERNEL);
257 if (!cdev)
258 return -ENOMEM;
259
260 spec = (const struct catpt_spec *)id->driver_data;
261 catpt_dev_init(cdev, dev, spec);
262
263 /* map DSP bar address */
264 cdev->lpe_ba = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
265 if (IS_ERR(cdev->lpe_ba))
266 return PTR_ERR(cdev->lpe_ba);
267 cdev->lpe_base = res->start;
268
269 /* map PCI bar address */
270 cdev->pci_ba = devm_platform_ioremap_resource(pdev, 1);
271 if (IS_ERR(cdev->pci_ba))
272 return PTR_ERR(cdev->pci_ba);
273
274 /* alloc buffer for storing DRAM context during dx transitions */
275 cdev->dxbuf_vaddr = dmam_alloc_coherent(dev, catpt_dram_size(cdev),
276 &cdev->dxbuf_paddr, GFP_KERNEL);
277 if (!cdev->dxbuf_vaddr)
278 return -ENOMEM;
279
280 ret = platform_get_irq(pdev, 0);
281 if (ret < 0)
282 return ret;
283 cdev->irq = ret;
284
285 platform_set_drvdata(pdev, cdev);
286
287 ret = devm_request_threaded_irq(dev, cdev->irq, catpt_dsp_irq_handler,
288 catpt_dsp_irq_thread,
289 IRQF_SHARED, "AudioDSP", cdev);
290 if (ret)
291 return ret;
292
293 return catpt_probe_components(cdev);
294 }
295
catpt_acpi_remove(struct platform_device * pdev)296 static void catpt_acpi_remove(struct platform_device *pdev)
297 {
298 struct catpt_dev *cdev = platform_get_drvdata(pdev);
299
300 pm_runtime_disable(cdev->dev);
301
302 snd_soc_unregister_component(cdev->dev);
303 catpt_dmac_remove(cdev);
304 catpt_dsp_power_down(cdev);
305
306 catpt_sram_free(&cdev->iram);
307 catpt_sram_free(&cdev->dram);
308 }
309
310 static struct snd_soc_acpi_mach lpt_machines[] = {
311 {
312 .id = "INT33CA",
313 .drv_name = "hsw_rt5640",
314 },
315 {}
316 };
317
318 static struct snd_soc_acpi_mach wpt_machines[] = {
319 {
320 .id = "INT33CA",
321 .drv_name = "hsw_rt5640",
322 },
323 {
324 .id = "INT343A",
325 .drv_name = "bdw_rt286",
326 },
327 {
328 .id = "10EC5650",
329 .drv_name = "bdw-rt5650",
330 },
331 {
332 .id = "RT5677CE",
333 .drv_name = "bdw-rt5677",
334 },
335 {}
336 };
337
338 static struct catpt_spec lpt_desc = {
339 .machines = lpt_machines,
340 .core_id = 0x01,
341 .host_dram_offset = 0x000000,
342 .host_iram_offset = 0x080000,
343 .host_shim_offset = 0x0E7000,
344 .host_dma_offset = { 0x0F0000, 0x0F8000 },
345 .host_ssp_offset = { 0x0E8000, 0x0E9000 },
346 .dram_mask = LPT_VDRTCTL0_DSRAMPGE_MASK,
347 .iram_mask = LPT_VDRTCTL0_ISRAMPGE_MASK,
348 .d3srampgd_bit = LPT_VDRTCTL0_D3SRAMPGD,
349 .d3pgd_bit = LPT_VDRTCTL0_D3PGD,
350 .pll_shutdown = lpt_dsp_pll_shutdown,
351 };
352
353 static struct catpt_spec wpt_desc = {
354 .machines = wpt_machines,
355 .core_id = 0x02,
356 .host_dram_offset = 0x000000,
357 .host_iram_offset = 0x0A0000,
358 .host_shim_offset = 0x0FB000,
359 .host_dma_offset = { 0x0FE000, 0x0FF000 },
360 .host_ssp_offset = { 0x0FC000, 0x0FD000 },
361 .dram_mask = WPT_VDRTCTL0_DSRAMPGE_MASK,
362 .iram_mask = WPT_VDRTCTL0_ISRAMPGE_MASK,
363 .d3srampgd_bit = WPT_VDRTCTL0_D3SRAMPGD,
364 .d3pgd_bit = WPT_VDRTCTL0_D3PGD,
365 .pll_shutdown = wpt_dsp_pll_shutdown,
366 };
367
368 static const struct acpi_device_id catpt_ids[] = {
369 { "INT33C8", (unsigned long)&lpt_desc },
370 { "INT3438", (unsigned long)&wpt_desc },
371 { }
372 };
373 MODULE_DEVICE_TABLE(acpi, catpt_ids);
374
375 static struct platform_driver catpt_acpi_driver = {
376 .probe = catpt_acpi_probe,
377 .remove = catpt_acpi_remove,
378 .driver = {
379 .name = "intel_catpt",
380 .acpi_match_table = catpt_ids,
381 .pm = &catpt_dev_pm,
382 .dev_groups = catpt_attr_groups,
383 },
384 };
385 module_platform_driver(catpt_acpi_driver);
386
387 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>");
388 MODULE_DESCRIPTION("Intel LPT/WPT AudioDSP driver");
389 MODULE_LICENSE("GPL v2");
390