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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
4 *
5 * Description: CoreSight Replicator driver
6 */
7
8#include <linux/acpi.h>
9#include <linux/amba/bus.h>
10#include <linux/kernel.h>
11#include <linux/device.h>
12#include <linux/platform_device.h>
13#include <linux/io.h>
14#include <linux/err.h>
15#include <linux/slab.h>
16#include <linux/pm_runtime.h>
17#include <linux/property.h>
18#include <linux/clk.h>
19#include <linux/of.h>
20#include <linux/coresight.h>
21
22#include "coresight-priv.h"
23
24#define REPLICATOR_IDFILTER0 0x000
25#define REPLICATOR_IDFILTER1 0x004
26
27DEFINE_CORESIGHT_DEVLIST(replicator_devs, "replicator");
28
29/**
30 * struct replicator_drvdata - specifics associated to a replicator component
31 * @base: memory mapped base address for this component. Also indicates
32 * whether this one is programmable or not.
33 * @atclk: optional clock for the core parts of the replicator.
34 * @csdev: component vitals needed by the framework
35 * @spinlock: serialize enable/disable operations.
36 * @check_idfilter_val: check if the context is lost upon clock removal.
37 */
38struct replicator_drvdata {
39 void __iomem *base;
40 struct clk *atclk;
41 struct coresight_device *csdev;
42 spinlock_t spinlock;
43 bool check_idfilter_val;
44};
45
46static void dynamic_replicator_reset(struct replicator_drvdata *drvdata)
47{
48 struct coresight_device *csdev = drvdata->csdev;
49
50 CS_UNLOCK(drvdata->base);
51
52 if (!coresight_claim_device_unlocked(csdev)) {
53 writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER0);
54 writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER1);
55 coresight_disclaim_device_unlocked(csdev);
56 }
57
58 CS_LOCK(drvdata->base);
59}
60
61/*
62 * replicator_reset : Reset the replicator configuration to sane values.
63 */
64static inline void replicator_reset(struct replicator_drvdata *drvdata)
65{
66 if (drvdata->base)
67 dynamic_replicator_reset(drvdata);
68}
69
70static int dynamic_replicator_enable(struct replicator_drvdata *drvdata,
71 int inport, int outport)
72{
73 int rc = 0;
74 u32 id0val, id1val;
75 struct coresight_device *csdev = drvdata->csdev;
76
77 CS_UNLOCK(drvdata->base);
78
79 id0val = readl_relaxed(drvdata->base + REPLICATOR_IDFILTER0);
80 id1val = readl_relaxed(drvdata->base + REPLICATOR_IDFILTER1);
81
82 /*
83 * Some replicator designs lose context when AMBA clocks are removed,
84 * so have a check for this.
85 */
86 if (drvdata->check_idfilter_val && id0val == 0x0 && id1val == 0x0)
87 id0val = id1val = 0xff;
88
89 if (id0val == 0xff && id1val == 0xff)
90 rc = coresight_claim_device_unlocked(csdev);
91
92 if (!rc) {
93 switch (outport) {
94 case 0:
95 id0val = 0x0;
96 break;
97 case 1:
98 id1val = 0x0;
99 break;
100 default:
101 WARN_ON(1);
102 rc = -EINVAL;
103 }
104 }
105
106 /* Ensure that the outport is enabled. */
107 if (!rc) {
108 writel_relaxed(id0val, drvdata->base + REPLICATOR_IDFILTER0);
109 writel_relaxed(id1val, drvdata->base + REPLICATOR_IDFILTER1);
110 }
111
112 CS_LOCK(drvdata->base);
113
114 return rc;
115}
116
117static int replicator_enable(struct coresight_device *csdev,
118 struct coresight_connection *in,
119 struct coresight_connection *out)
120{
121 int rc = 0;
122 struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
123 unsigned long flags;
124 bool first_enable = false;
125
126 spin_lock_irqsave(&drvdata->spinlock, flags);
127 if (atomic_read(&out->src_refcnt) == 0) {
128 if (drvdata->base)
129 rc = dynamic_replicator_enable(drvdata, in->dest_port,
130 out->src_port);
131 if (!rc)
132 first_enable = true;
133 }
134 if (!rc)
135 atomic_inc(&out->src_refcnt);
136 spin_unlock_irqrestore(&drvdata->spinlock, flags);
137
138 if (first_enable)
139 dev_dbg(&csdev->dev, "REPLICATOR enabled\n");
140 return rc;
141}
142
143static void dynamic_replicator_disable(struct replicator_drvdata *drvdata,
144 int inport, int outport)
145{
146 u32 reg;
147 struct coresight_device *csdev = drvdata->csdev;
148
149 switch (outport) {
150 case 0:
151 reg = REPLICATOR_IDFILTER0;
152 break;
153 case 1:
154 reg = REPLICATOR_IDFILTER1;
155 break;
156 default:
157 WARN_ON(1);
158 return;
159 }
160
161 CS_UNLOCK(drvdata->base);
162
163 /* disable the flow of ATB data through port */
164 writel_relaxed(0xff, drvdata->base + reg);
165
166 if ((readl_relaxed(drvdata->base + REPLICATOR_IDFILTER0) == 0xff) &&
167 (readl_relaxed(drvdata->base + REPLICATOR_IDFILTER1) == 0xff))
168 coresight_disclaim_device_unlocked(csdev);
169 CS_LOCK(drvdata->base);
170}
171
172static void replicator_disable(struct coresight_device *csdev,
173 struct coresight_connection *in,
174 struct coresight_connection *out)
175{
176 struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
177 unsigned long flags;
178 bool last_disable = false;
179
180 spin_lock_irqsave(&drvdata->spinlock, flags);
181 if (atomic_dec_return(&out->src_refcnt) == 0) {
182 if (drvdata->base)
183 dynamic_replicator_disable(drvdata, in->dest_port,
184 out->src_port);
185 last_disable = true;
186 }
187 spin_unlock_irqrestore(&drvdata->spinlock, flags);
188
189 if (last_disable)
190 dev_dbg(&csdev->dev, "REPLICATOR disabled\n");
191}
192
193static const struct coresight_ops_link replicator_link_ops = {
194 .enable = replicator_enable,
195 .disable = replicator_disable,
196};
197
198static const struct coresight_ops replicator_cs_ops = {
199 .link_ops = &replicator_link_ops,
200};
201
202static struct attribute *replicator_mgmt_attrs[] = {
203 coresight_simple_reg32(idfilter0, REPLICATOR_IDFILTER0),
204 coresight_simple_reg32(idfilter1, REPLICATOR_IDFILTER1),
205 NULL,
206};
207
208static const struct attribute_group replicator_mgmt_group = {
209 .attrs = replicator_mgmt_attrs,
210 .name = "mgmt",
211};
212
213static const struct attribute_group *replicator_groups[] = {
214 &replicator_mgmt_group,
215 NULL,
216};
217
218static int replicator_probe(struct device *dev, struct resource *res)
219{
220 int ret = 0;
221 struct coresight_platform_data *pdata = NULL;
222 struct replicator_drvdata *drvdata;
223 struct coresight_desc desc = { 0 };
224 void __iomem *base;
225
226 if (is_of_node(dev_fwnode(dev)) &&
227 of_device_is_compatible(dev->of_node, "arm,coresight-replicator"))
228 dev_warn_once(dev,
229 "Uses OBSOLETE CoreSight replicator binding\n");
230
231 desc.name = coresight_alloc_device_name(&replicator_devs, dev);
232 if (!desc.name)
233 return -ENOMEM;
234
235 drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
236 if (!drvdata)
237 return -ENOMEM;
238
239 drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */
240 if (!IS_ERR(drvdata->atclk)) {
241 ret = clk_prepare_enable(drvdata->atclk);
242 if (ret)
243 return ret;
244 }
245
246 /*
247 * Map the device base for dynamic-replicator, which has been
248 * validated by AMBA core
249 */
250 if (res) {
251 base = devm_ioremap_resource(dev, res);
252 if (IS_ERR(base)) {
253 ret = PTR_ERR(base);
254 goto out_disable_clk;
255 }
256 drvdata->base = base;
257 desc.groups = replicator_groups;
258 desc.access = CSDEV_ACCESS_IOMEM(base);
259 }
260
261 if (fwnode_property_present(dev_fwnode(dev),
262 "qcom,replicator-loses-context"))
263 drvdata->check_idfilter_val = true;
264
265 dev_set_drvdata(dev, drvdata);
266
267 pdata = coresight_get_platform_data(dev);
268 if (IS_ERR(pdata)) {
269 ret = PTR_ERR(pdata);
270 goto out_disable_clk;
271 }
272 dev->platform_data = pdata;
273
274 spin_lock_init(&drvdata->spinlock);
275 desc.type = CORESIGHT_DEV_TYPE_LINK;
276 desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
277 desc.ops = &replicator_cs_ops;
278 desc.pdata = dev->platform_data;
279 desc.dev = dev;
280
281 drvdata->csdev = coresight_register(&desc);
282 if (IS_ERR(drvdata->csdev)) {
283 ret = PTR_ERR(drvdata->csdev);
284 goto out_disable_clk;
285 }
286
287 replicator_reset(drvdata);
288 pm_runtime_put(dev);
289
290out_disable_clk:
291 if (ret && !IS_ERR_OR_NULL(drvdata->atclk))
292 clk_disable_unprepare(drvdata->atclk);
293 return ret;
294}
295
296static int replicator_remove(struct device *dev)
297{
298 struct replicator_drvdata *drvdata = dev_get_drvdata(dev);
299
300 coresight_unregister(drvdata->csdev);
301 return 0;
302}
303
304static int static_replicator_probe(struct platform_device *pdev)
305{
306 int ret;
307
308 pm_runtime_get_noresume(&pdev->dev);
309 pm_runtime_set_active(&pdev->dev);
310 pm_runtime_enable(&pdev->dev);
311
312 /* Static replicators do not have programming base */
313 ret = replicator_probe(&pdev->dev, NULL);
314
315 if (ret) {
316 pm_runtime_put_noidle(&pdev->dev);
317 pm_runtime_disable(&pdev->dev);
318 }
319
320 return ret;
321}
322
323static void static_replicator_remove(struct platform_device *pdev)
324{
325 replicator_remove(&pdev->dev);
326 pm_runtime_disable(&pdev->dev);
327}
328
329#ifdef CONFIG_PM
330static int replicator_runtime_suspend(struct device *dev)
331{
332 struct replicator_drvdata *drvdata = dev_get_drvdata(dev);
333
334 if (drvdata && !IS_ERR(drvdata->atclk))
335 clk_disable_unprepare(drvdata->atclk);
336
337 return 0;
338}
339
340static int replicator_runtime_resume(struct device *dev)
341{
342 struct replicator_drvdata *drvdata = dev_get_drvdata(dev);
343
344 if (drvdata && !IS_ERR(drvdata->atclk))
345 clk_prepare_enable(drvdata->atclk);
346
347 return 0;
348}
349#endif
350
351static const struct dev_pm_ops replicator_dev_pm_ops = {
352 SET_RUNTIME_PM_OPS(replicator_runtime_suspend,
353 replicator_runtime_resume, NULL)
354};
355
356static const struct of_device_id static_replicator_match[] = {
357 {.compatible = "arm,coresight-replicator"},
358 {.compatible = "arm,coresight-static-replicator"},
359 {}
360};
361
362MODULE_DEVICE_TABLE(of, static_replicator_match);
363
364#ifdef CONFIG_ACPI
365static const struct acpi_device_id static_replicator_acpi_ids[] = {
366 {"ARMHC985", 0}, /* ARM CoreSight Static Replicator */
367 {}
368};
369
370MODULE_DEVICE_TABLE(acpi, static_replicator_acpi_ids);
371#endif
372
373static struct platform_driver static_replicator_driver = {
374 .probe = static_replicator_probe,
375 .remove_new = static_replicator_remove,
376 .driver = {
377 .name = "coresight-static-replicator",
378 /* THIS_MODULE is taken care of by platform_driver_register() */
379 .of_match_table = of_match_ptr(static_replicator_match),
380 .acpi_match_table = ACPI_PTR(static_replicator_acpi_ids),
381 .pm = &replicator_dev_pm_ops,
382 .suppress_bind_attrs = true,
383 },
384};
385
386static int dynamic_replicator_probe(struct amba_device *adev,
387 const struct amba_id *id)
388{
389 return replicator_probe(&adev->dev, &adev->res);
390}
391
392static void dynamic_replicator_remove(struct amba_device *adev)
393{
394 replicator_remove(&adev->dev);
395}
396
397static const struct amba_id dynamic_replicator_ids[] = {
398 CS_AMBA_ID(0x000bb909),
399 CS_AMBA_ID(0x000bb9ec), /* Coresight SoC-600 */
400 {},
401};
402
403MODULE_DEVICE_TABLE(amba, dynamic_replicator_ids);
404
405static struct amba_driver dynamic_replicator_driver = {
406 .drv = {
407 .name = "coresight-dynamic-replicator",
408 .pm = &replicator_dev_pm_ops,
409 .owner = THIS_MODULE,
410 .suppress_bind_attrs = true,
411 },
412 .probe = dynamic_replicator_probe,
413 .remove = dynamic_replicator_remove,
414 .id_table = dynamic_replicator_ids,
415};
416
417static int __init replicator_init(void)
418{
419 int ret;
420
421 ret = platform_driver_register(&static_replicator_driver);
422 if (ret) {
423 pr_info("Error registering platform driver\n");
424 return ret;
425 }
426
427 ret = amba_driver_register(&dynamic_replicator_driver);
428 if (ret) {
429 pr_info("Error registering amba driver\n");
430 platform_driver_unregister(&static_replicator_driver);
431 }
432
433 return ret;
434}
435
436static void __exit replicator_exit(void)
437{
438 platform_driver_unregister(&static_replicator_driver);
439 amba_driver_unregister(&dynamic_replicator_driver);
440}
441
442module_init(replicator_init);
443module_exit(replicator_exit);
444
445MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>");
446MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>");
447MODULE_DESCRIPTION("Arm CoreSight Replicator Driver");
448MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
4 *
5 * Description: CoreSight Replicator driver
6 */
7
8#include <linux/acpi.h>
9#include <linux/amba/bus.h>
10#include <linux/kernel.h>
11#include <linux/device.h>
12#include <linux/platform_device.h>
13#include <linux/io.h>
14#include <linux/err.h>
15#include <linux/slab.h>
16#include <linux/pm_runtime.h>
17#include <linux/property.h>
18#include <linux/clk.h>
19#include <linux/of.h>
20#include <linux/coresight.h>
21
22#include "coresight-priv.h"
23
24#define REPLICATOR_IDFILTER0 0x000
25#define REPLICATOR_IDFILTER1 0x004
26
27DEFINE_CORESIGHT_DEVLIST(replicator_devs, "replicator");
28
29/**
30 * struct replicator_drvdata - specifics associated to a replicator component
31 * @base: memory mapped base address for this component. Also indicates
32 * whether this one is programmable or not.
33 * @atclk: optional clock for the core parts of the replicator.
34 * @csdev: component vitals needed by the framework
35 * @spinlock: serialize enable/disable operations.
36 * @check_idfilter_val: check if the context is lost upon clock removal.
37 */
38struct replicator_drvdata {
39 void __iomem *base;
40 struct clk *atclk;
41 struct coresight_device *csdev;
42 spinlock_t spinlock;
43 bool check_idfilter_val;
44};
45
46static void dynamic_replicator_reset(struct replicator_drvdata *drvdata)
47{
48 CS_UNLOCK(drvdata->base);
49
50 if (!coresight_claim_device_unlocked(drvdata->base)) {
51 writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER0);
52 writel_relaxed(0xff, drvdata->base + REPLICATOR_IDFILTER1);
53 coresight_disclaim_device_unlocked(drvdata->base);
54 }
55
56 CS_LOCK(drvdata->base);
57}
58
59/*
60 * replicator_reset : Reset the replicator configuration to sane values.
61 */
62static inline void replicator_reset(struct replicator_drvdata *drvdata)
63{
64 if (drvdata->base)
65 dynamic_replicator_reset(drvdata);
66}
67
68static int dynamic_replicator_enable(struct replicator_drvdata *drvdata,
69 int inport, int outport)
70{
71 int rc = 0;
72 u32 id0val, id1val;
73
74 CS_UNLOCK(drvdata->base);
75
76 id0val = readl_relaxed(drvdata->base + REPLICATOR_IDFILTER0);
77 id1val = readl_relaxed(drvdata->base + REPLICATOR_IDFILTER1);
78
79 /*
80 * Some replicator designs lose context when AMBA clocks are removed,
81 * so have a check for this.
82 */
83 if (drvdata->check_idfilter_val && id0val == 0x0 && id1val == 0x0)
84 id0val = id1val = 0xff;
85
86 if (id0val == 0xff && id1val == 0xff)
87 rc = coresight_claim_device_unlocked(drvdata->base);
88
89 if (!rc) {
90 switch (outport) {
91 case 0:
92 id0val = 0x0;
93 break;
94 case 1:
95 id1val = 0x0;
96 break;
97 default:
98 WARN_ON(1);
99 rc = -EINVAL;
100 }
101 }
102
103 /* Ensure that the outport is enabled. */
104 if (!rc) {
105 writel_relaxed(id0val, drvdata->base + REPLICATOR_IDFILTER0);
106 writel_relaxed(id1val, drvdata->base + REPLICATOR_IDFILTER1);
107 }
108
109 CS_LOCK(drvdata->base);
110
111 return rc;
112}
113
114static int replicator_enable(struct coresight_device *csdev, int inport,
115 int outport)
116{
117 int rc = 0;
118 struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
119 unsigned long flags;
120 bool first_enable = false;
121
122 spin_lock_irqsave(&drvdata->spinlock, flags);
123 if (atomic_read(&csdev->refcnt[outport]) == 0) {
124 if (drvdata->base)
125 rc = dynamic_replicator_enable(drvdata, inport,
126 outport);
127 if (!rc)
128 first_enable = true;
129 }
130 if (!rc)
131 atomic_inc(&csdev->refcnt[outport]);
132 spin_unlock_irqrestore(&drvdata->spinlock, flags);
133
134 if (first_enable)
135 dev_dbg(&csdev->dev, "REPLICATOR enabled\n");
136 return rc;
137}
138
139static void dynamic_replicator_disable(struct replicator_drvdata *drvdata,
140 int inport, int outport)
141{
142 u32 reg;
143
144 switch (outport) {
145 case 0:
146 reg = REPLICATOR_IDFILTER0;
147 break;
148 case 1:
149 reg = REPLICATOR_IDFILTER1;
150 break;
151 default:
152 WARN_ON(1);
153 return;
154 }
155
156 CS_UNLOCK(drvdata->base);
157
158 /* disable the flow of ATB data through port */
159 writel_relaxed(0xff, drvdata->base + reg);
160
161 if ((readl_relaxed(drvdata->base + REPLICATOR_IDFILTER0) == 0xff) &&
162 (readl_relaxed(drvdata->base + REPLICATOR_IDFILTER1) == 0xff))
163 coresight_disclaim_device_unlocked(drvdata->base);
164 CS_LOCK(drvdata->base);
165}
166
167static void replicator_disable(struct coresight_device *csdev, int inport,
168 int outport)
169{
170 struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
171 unsigned long flags;
172 bool last_disable = false;
173
174 spin_lock_irqsave(&drvdata->spinlock, flags);
175 if (atomic_dec_return(&csdev->refcnt[outport]) == 0) {
176 if (drvdata->base)
177 dynamic_replicator_disable(drvdata, inport, outport);
178 last_disable = true;
179 }
180 spin_unlock_irqrestore(&drvdata->spinlock, flags);
181
182 if (last_disable)
183 dev_dbg(&csdev->dev, "REPLICATOR disabled\n");
184}
185
186static const struct coresight_ops_link replicator_link_ops = {
187 .enable = replicator_enable,
188 .disable = replicator_disable,
189};
190
191static const struct coresight_ops replicator_cs_ops = {
192 .link_ops = &replicator_link_ops,
193};
194
195#define coresight_replicator_reg(name, offset) \
196 coresight_simple_reg32(struct replicator_drvdata, name, offset)
197
198coresight_replicator_reg(idfilter0, REPLICATOR_IDFILTER0);
199coresight_replicator_reg(idfilter1, REPLICATOR_IDFILTER1);
200
201static struct attribute *replicator_mgmt_attrs[] = {
202 &dev_attr_idfilter0.attr,
203 &dev_attr_idfilter1.attr,
204 NULL,
205};
206
207static const struct attribute_group replicator_mgmt_group = {
208 .attrs = replicator_mgmt_attrs,
209 .name = "mgmt",
210};
211
212static const struct attribute_group *replicator_groups[] = {
213 &replicator_mgmt_group,
214 NULL,
215};
216
217static int replicator_probe(struct device *dev, struct resource *res)
218{
219 int ret = 0;
220 struct coresight_platform_data *pdata = NULL;
221 struct replicator_drvdata *drvdata;
222 struct coresight_desc desc = { 0 };
223 void __iomem *base;
224
225 if (is_of_node(dev_fwnode(dev)) &&
226 of_device_is_compatible(dev->of_node, "arm,coresight-replicator"))
227 dev_warn_once(dev,
228 "Uses OBSOLETE CoreSight replicator binding\n");
229
230 desc.name = coresight_alloc_device_name(&replicator_devs, dev);
231 if (!desc.name)
232 return -ENOMEM;
233
234 drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
235 if (!drvdata)
236 return -ENOMEM;
237
238 drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */
239 if (!IS_ERR(drvdata->atclk)) {
240 ret = clk_prepare_enable(drvdata->atclk);
241 if (ret)
242 return ret;
243 }
244
245 /*
246 * Map the device base for dynamic-replicator, which has been
247 * validated by AMBA core
248 */
249 if (res) {
250 base = devm_ioremap_resource(dev, res);
251 if (IS_ERR(base)) {
252 ret = PTR_ERR(base);
253 goto out_disable_clk;
254 }
255 drvdata->base = base;
256 desc.groups = replicator_groups;
257 }
258
259 if (fwnode_property_present(dev_fwnode(dev),
260 "qcom,replicator-loses-context"))
261 drvdata->check_idfilter_val = true;
262
263 dev_set_drvdata(dev, drvdata);
264
265 pdata = coresight_get_platform_data(dev);
266 if (IS_ERR(pdata)) {
267 ret = PTR_ERR(pdata);
268 goto out_disable_clk;
269 }
270 dev->platform_data = pdata;
271
272 spin_lock_init(&drvdata->spinlock);
273 desc.type = CORESIGHT_DEV_TYPE_LINK;
274 desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
275 desc.ops = &replicator_cs_ops;
276 desc.pdata = dev->platform_data;
277 desc.dev = dev;
278
279 drvdata->csdev = coresight_register(&desc);
280 if (IS_ERR(drvdata->csdev)) {
281 ret = PTR_ERR(drvdata->csdev);
282 goto out_disable_clk;
283 }
284
285 replicator_reset(drvdata);
286 pm_runtime_put(dev);
287
288out_disable_clk:
289 if (ret && !IS_ERR_OR_NULL(drvdata->atclk))
290 clk_disable_unprepare(drvdata->atclk);
291 return ret;
292}
293
294static int static_replicator_probe(struct platform_device *pdev)
295{
296 int ret;
297
298 pm_runtime_get_noresume(&pdev->dev);
299 pm_runtime_set_active(&pdev->dev);
300 pm_runtime_enable(&pdev->dev);
301
302 /* Static replicators do not have programming base */
303 ret = replicator_probe(&pdev->dev, NULL);
304
305 if (ret) {
306 pm_runtime_put_noidle(&pdev->dev);
307 pm_runtime_disable(&pdev->dev);
308 }
309
310 return ret;
311}
312
313#ifdef CONFIG_PM
314static int replicator_runtime_suspend(struct device *dev)
315{
316 struct replicator_drvdata *drvdata = dev_get_drvdata(dev);
317
318 if (drvdata && !IS_ERR(drvdata->atclk))
319 clk_disable_unprepare(drvdata->atclk);
320
321 return 0;
322}
323
324static int replicator_runtime_resume(struct device *dev)
325{
326 struct replicator_drvdata *drvdata = dev_get_drvdata(dev);
327
328 if (drvdata && !IS_ERR(drvdata->atclk))
329 clk_prepare_enable(drvdata->atclk);
330
331 return 0;
332}
333#endif
334
335static const struct dev_pm_ops replicator_dev_pm_ops = {
336 SET_RUNTIME_PM_OPS(replicator_runtime_suspend,
337 replicator_runtime_resume, NULL)
338};
339
340static const struct of_device_id static_replicator_match[] = {
341 {.compatible = "arm,coresight-replicator"},
342 {.compatible = "arm,coresight-static-replicator"},
343 {}
344};
345
346#ifdef CONFIG_ACPI
347static const struct acpi_device_id static_replicator_acpi_ids[] = {
348 {"ARMHC985", 0}, /* ARM CoreSight Static Replicator */
349 {}
350};
351#endif
352
353static struct platform_driver static_replicator_driver = {
354 .probe = static_replicator_probe,
355 .driver = {
356 .name = "coresight-static-replicator",
357 .of_match_table = of_match_ptr(static_replicator_match),
358 .acpi_match_table = ACPI_PTR(static_replicator_acpi_ids),
359 .pm = &replicator_dev_pm_ops,
360 .suppress_bind_attrs = true,
361 },
362};
363builtin_platform_driver(static_replicator_driver);
364
365static int dynamic_replicator_probe(struct amba_device *adev,
366 const struct amba_id *id)
367{
368 return replicator_probe(&adev->dev, &adev->res);
369}
370
371static const struct amba_id dynamic_replicator_ids[] = {
372 CS_AMBA_ID(0x000bb909),
373 CS_AMBA_ID(0x000bb9ec), /* Coresight SoC-600 */
374 {},
375};
376
377static struct amba_driver dynamic_replicator_driver = {
378 .drv = {
379 .name = "coresight-dynamic-replicator",
380 .pm = &replicator_dev_pm_ops,
381 .suppress_bind_attrs = true,
382 },
383 .probe = dynamic_replicator_probe,
384 .id_table = dynamic_replicator_ids,
385};
386builtin_amba_driver(dynamic_replicator_driver);