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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
4 *
5 * Description: CoreSight Funnel driver
6 */
7
8#include <linux/acpi.h>
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <linux/types.h>
12#include <linux/device.h>
13#include <linux/err.h>
14#include <linux/fs.h>
15#include <linux/slab.h>
16#include <linux/of.h>
17#include <linux/platform_device.h>
18#include <linux/pm_runtime.h>
19#include <linux/coresight.h>
20#include <linux/amba/bus.h>
21#include <linux/clk.h>
22
23#include "coresight-priv.h"
24
25#define FUNNEL_FUNCTL 0x000
26#define FUNNEL_PRICTL 0x004
27
28#define FUNNEL_HOLDTIME_MASK 0xf00
29#define FUNNEL_HOLDTIME_SHFT 0x8
30#define FUNNEL_HOLDTIME (0x7 << FUNNEL_HOLDTIME_SHFT)
31#define FUNNEL_ENSx_MASK 0xff
32
33DEFINE_CORESIGHT_DEVLIST(funnel_devs, "funnel");
34
35/**
36 * struct funnel_drvdata - specifics associated to a funnel component
37 * @base: memory mapped base address for this component.
38 * @atclk: optional clock for the core parts of the funnel.
39 * @csdev: component vitals needed by the framework.
40 * @priority: port selection order.
41 * @spinlock: serialize enable/disable operations.
42 */
43struct funnel_drvdata {
44 void __iomem *base;
45 struct clk *atclk;
46 struct coresight_device *csdev;
47 unsigned long priority;
48 spinlock_t spinlock;
49};
50
51static int dynamic_funnel_enable_hw(struct funnel_drvdata *drvdata, int port)
52{
53 u32 functl;
54 int rc = 0;
55
56 CS_UNLOCK(drvdata->base);
57
58 functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
59 /* Claim the device only when we enable the first slave */
60 if (!(functl & FUNNEL_ENSx_MASK)) {
61 rc = coresight_claim_device_unlocked(drvdata->base);
62 if (rc)
63 goto done;
64 }
65
66 functl &= ~FUNNEL_HOLDTIME_MASK;
67 functl |= FUNNEL_HOLDTIME;
68 functl |= (1 << port);
69 writel_relaxed(functl, drvdata->base + FUNNEL_FUNCTL);
70 writel_relaxed(drvdata->priority, drvdata->base + FUNNEL_PRICTL);
71done:
72 CS_LOCK(drvdata->base);
73 return rc;
74}
75
76static int funnel_enable(struct coresight_device *csdev, int inport,
77 int outport)
78{
79 int rc = 0;
80 struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
81 unsigned long flags;
82 bool first_enable = false;
83
84 spin_lock_irqsave(&drvdata->spinlock, flags);
85 if (atomic_read(&csdev->refcnt[inport]) == 0) {
86 if (drvdata->base)
87 rc = dynamic_funnel_enable_hw(drvdata, inport);
88 if (!rc)
89 first_enable = true;
90 }
91 if (!rc)
92 atomic_inc(&csdev->refcnt[inport]);
93 spin_unlock_irqrestore(&drvdata->spinlock, flags);
94
95 if (first_enable)
96 dev_dbg(&csdev->dev, "FUNNEL inport %d enabled\n", inport);
97 return rc;
98}
99
100static void dynamic_funnel_disable_hw(struct funnel_drvdata *drvdata,
101 int inport)
102{
103 u32 functl;
104
105 CS_UNLOCK(drvdata->base);
106
107 functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
108 functl &= ~(1 << inport);
109 writel_relaxed(functl, drvdata->base + FUNNEL_FUNCTL);
110
111 /* Disclaim the device if none of the slaves are now active */
112 if (!(functl & FUNNEL_ENSx_MASK))
113 coresight_disclaim_device_unlocked(drvdata->base);
114
115 CS_LOCK(drvdata->base);
116}
117
118static void funnel_disable(struct coresight_device *csdev, int inport,
119 int outport)
120{
121 struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
122 unsigned long flags;
123 bool last_disable = false;
124
125 spin_lock_irqsave(&drvdata->spinlock, flags);
126 if (atomic_dec_return(&csdev->refcnt[inport]) == 0) {
127 if (drvdata->base)
128 dynamic_funnel_disable_hw(drvdata, inport);
129 last_disable = true;
130 }
131 spin_unlock_irqrestore(&drvdata->spinlock, flags);
132
133 if (last_disable)
134 dev_dbg(&csdev->dev, "FUNNEL inport %d disabled\n", inport);
135}
136
137static const struct coresight_ops_link funnel_link_ops = {
138 .enable = funnel_enable,
139 .disable = funnel_disable,
140};
141
142static const struct coresight_ops funnel_cs_ops = {
143 .link_ops = &funnel_link_ops,
144};
145
146static ssize_t priority_show(struct device *dev,
147 struct device_attribute *attr, char *buf)
148{
149 struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
150 unsigned long val = drvdata->priority;
151
152 return sprintf(buf, "%#lx\n", val);
153}
154
155static ssize_t priority_store(struct device *dev,
156 struct device_attribute *attr,
157 const char *buf, size_t size)
158{
159 int ret;
160 unsigned long val;
161 struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
162
163 ret = kstrtoul(buf, 16, &val);
164 if (ret)
165 return ret;
166
167 drvdata->priority = val;
168 return size;
169}
170static DEVICE_ATTR_RW(priority);
171
172static u32 get_funnel_ctrl_hw(struct funnel_drvdata *drvdata)
173{
174 u32 functl;
175
176 CS_UNLOCK(drvdata->base);
177 functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
178 CS_LOCK(drvdata->base);
179
180 return functl;
181}
182
183static ssize_t funnel_ctrl_show(struct device *dev,
184 struct device_attribute *attr, char *buf)
185{
186 u32 val;
187 struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
188
189 pm_runtime_get_sync(dev->parent);
190
191 val = get_funnel_ctrl_hw(drvdata);
192
193 pm_runtime_put(dev->parent);
194
195 return sprintf(buf, "%#x\n", val);
196}
197static DEVICE_ATTR_RO(funnel_ctrl);
198
199static struct attribute *coresight_funnel_attrs[] = {
200 &dev_attr_funnel_ctrl.attr,
201 &dev_attr_priority.attr,
202 NULL,
203};
204ATTRIBUTE_GROUPS(coresight_funnel);
205
206static int funnel_probe(struct device *dev, struct resource *res)
207{
208 int ret;
209 void __iomem *base;
210 struct coresight_platform_data *pdata = NULL;
211 struct funnel_drvdata *drvdata;
212 struct coresight_desc desc = { 0 };
213
214 if (is_of_node(dev_fwnode(dev)) &&
215 of_device_is_compatible(dev->of_node, "arm,coresight-funnel"))
216 dev_warn_once(dev, "Uses OBSOLETE CoreSight funnel binding\n");
217
218 desc.name = coresight_alloc_device_name(&funnel_devs, dev);
219 if (!desc.name)
220 return -ENOMEM;
221
222 drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
223 if (!drvdata)
224 return -ENOMEM;
225
226 drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */
227 if (!IS_ERR(drvdata->atclk)) {
228 ret = clk_prepare_enable(drvdata->atclk);
229 if (ret)
230 return ret;
231 }
232
233 /*
234 * Map the device base for dynamic-funnel, which has been
235 * validated by AMBA core.
236 */
237 if (res) {
238 base = devm_ioremap_resource(dev, res);
239 if (IS_ERR(base)) {
240 ret = PTR_ERR(base);
241 goto out_disable_clk;
242 }
243 drvdata->base = base;
244 desc.groups = coresight_funnel_groups;
245 }
246
247 dev_set_drvdata(dev, drvdata);
248
249 pdata = coresight_get_platform_data(dev);
250 if (IS_ERR(pdata)) {
251 ret = PTR_ERR(pdata);
252 goto out_disable_clk;
253 }
254 dev->platform_data = pdata;
255
256 spin_lock_init(&drvdata->spinlock);
257 desc.type = CORESIGHT_DEV_TYPE_LINK;
258 desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG;
259 desc.ops = &funnel_cs_ops;
260 desc.pdata = pdata;
261 desc.dev = dev;
262 drvdata->csdev = coresight_register(&desc);
263 if (IS_ERR(drvdata->csdev)) {
264 ret = PTR_ERR(drvdata->csdev);
265 goto out_disable_clk;
266 }
267
268 pm_runtime_put(dev);
269 ret = 0;
270
271out_disable_clk:
272 if (ret && !IS_ERR_OR_NULL(drvdata->atclk))
273 clk_disable_unprepare(drvdata->atclk);
274 return ret;
275}
276
277#ifdef CONFIG_PM
278static int funnel_runtime_suspend(struct device *dev)
279{
280 struct funnel_drvdata *drvdata = dev_get_drvdata(dev);
281
282 if (drvdata && !IS_ERR(drvdata->atclk))
283 clk_disable_unprepare(drvdata->atclk);
284
285 return 0;
286}
287
288static int funnel_runtime_resume(struct device *dev)
289{
290 struct funnel_drvdata *drvdata = dev_get_drvdata(dev);
291
292 if (drvdata && !IS_ERR(drvdata->atclk))
293 clk_prepare_enable(drvdata->atclk);
294
295 return 0;
296}
297#endif
298
299static const struct dev_pm_ops funnel_dev_pm_ops = {
300 SET_RUNTIME_PM_OPS(funnel_runtime_suspend, funnel_runtime_resume, NULL)
301};
302
303static int static_funnel_probe(struct platform_device *pdev)
304{
305 int ret;
306
307 pm_runtime_get_noresume(&pdev->dev);
308 pm_runtime_set_active(&pdev->dev);
309 pm_runtime_enable(&pdev->dev);
310
311 /* Static funnel do not have programming base */
312 ret = funnel_probe(&pdev->dev, NULL);
313
314 if (ret) {
315 pm_runtime_put_noidle(&pdev->dev);
316 pm_runtime_disable(&pdev->dev);
317 }
318
319 return ret;
320}
321
322static const struct of_device_id static_funnel_match[] = {
323 {.compatible = "arm,coresight-static-funnel"},
324 {}
325};
326
327#ifdef CONFIG_ACPI
328static const struct acpi_device_id static_funnel_ids[] = {
329 {"ARMHC9FE", 0},
330 {},
331};
332#endif
333
334static struct platform_driver static_funnel_driver = {
335 .probe = static_funnel_probe,
336 .driver = {
337 .name = "coresight-static-funnel",
338 .of_match_table = static_funnel_match,
339 .acpi_match_table = ACPI_PTR(static_funnel_ids),
340 .pm = &funnel_dev_pm_ops,
341 .suppress_bind_attrs = true,
342 },
343};
344builtin_platform_driver(static_funnel_driver);
345
346static int dynamic_funnel_probe(struct amba_device *adev,
347 const struct amba_id *id)
348{
349 return funnel_probe(&adev->dev, &adev->res);
350}
351
352static const struct amba_id dynamic_funnel_ids[] = {
353 {
354 .id = 0x000bb908,
355 .mask = 0x000fffff,
356 },
357 {
358 /* Coresight SoC-600 */
359 .id = 0x000bb9eb,
360 .mask = 0x000fffff,
361 },
362 { 0, 0},
363};
364
365static struct amba_driver dynamic_funnel_driver = {
366 .drv = {
367 .name = "coresight-dynamic-funnel",
368 .owner = THIS_MODULE,
369 .pm = &funnel_dev_pm_ops,
370 .suppress_bind_attrs = true,
371 },
372 .probe = dynamic_funnel_probe,
373 .id_table = dynamic_funnel_ids,
374};
375builtin_amba_driver(dynamic_funnel_driver);
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
4 *
5 * Description: CoreSight Funnel driver
6 */
7
8#include <linux/acpi.h>
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <linux/types.h>
12#include <linux/device.h>
13#include <linux/err.h>
14#include <linux/fs.h>
15#include <linux/slab.h>
16#include <linux/of.h>
17#include <linux/platform_device.h>
18#include <linux/pm_runtime.h>
19#include <linux/coresight.h>
20#include <linux/amba/bus.h>
21#include <linux/clk.h>
22
23#include "coresight-priv.h"
24
25#define FUNNEL_FUNCTL 0x000
26#define FUNNEL_PRICTL 0x004
27
28#define FUNNEL_HOLDTIME_MASK 0xf00
29#define FUNNEL_HOLDTIME_SHFT 0x8
30#define FUNNEL_HOLDTIME (0x7 << FUNNEL_HOLDTIME_SHFT)
31#define FUNNEL_ENSx_MASK 0xff
32
33DEFINE_CORESIGHT_DEVLIST(funnel_devs, "funnel");
34
35/**
36 * struct funnel_drvdata - specifics associated to a funnel component
37 * @base: memory mapped base address for this component.
38 * @atclk: optional clock for the core parts of the funnel.
39 * @pclk: APB clock if present, otherwise NULL
40 * @csdev: component vitals needed by the framework.
41 * @priority: port selection order.
42 * @spinlock: serialize enable/disable operations.
43 */
44struct funnel_drvdata {
45 void __iomem *base;
46 struct clk *atclk;
47 struct clk *pclk;
48 struct coresight_device *csdev;
49 unsigned long priority;
50 spinlock_t spinlock;
51};
52
53static int dynamic_funnel_enable_hw(struct funnel_drvdata *drvdata, int port)
54{
55 u32 functl;
56 int rc = 0;
57 struct coresight_device *csdev = drvdata->csdev;
58
59 CS_UNLOCK(drvdata->base);
60
61 functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
62 /* Claim the device only when we enable the first slave */
63 if (!(functl & FUNNEL_ENSx_MASK)) {
64 rc = coresight_claim_device_unlocked(csdev);
65 if (rc)
66 goto done;
67 }
68
69 functl &= ~FUNNEL_HOLDTIME_MASK;
70 functl |= FUNNEL_HOLDTIME;
71 functl |= (1 << port);
72 writel_relaxed(functl, drvdata->base + FUNNEL_FUNCTL);
73 writel_relaxed(drvdata->priority, drvdata->base + FUNNEL_PRICTL);
74done:
75 CS_LOCK(drvdata->base);
76 return rc;
77}
78
79static int funnel_enable(struct coresight_device *csdev,
80 struct coresight_connection *in,
81 struct coresight_connection *out)
82{
83 int rc = 0;
84 struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
85 unsigned long flags;
86 bool first_enable = false;
87
88 spin_lock_irqsave(&drvdata->spinlock, flags);
89 if (atomic_read(&in->dest_refcnt) == 0) {
90 if (drvdata->base)
91 rc = dynamic_funnel_enable_hw(drvdata, in->dest_port);
92 if (!rc)
93 first_enable = true;
94 }
95 if (!rc)
96 atomic_inc(&in->dest_refcnt);
97 spin_unlock_irqrestore(&drvdata->spinlock, flags);
98
99 if (first_enable)
100 dev_dbg(&csdev->dev, "FUNNEL inport %d enabled\n",
101 in->dest_port);
102 return rc;
103}
104
105static void dynamic_funnel_disable_hw(struct funnel_drvdata *drvdata,
106 int inport)
107{
108 u32 functl;
109 struct coresight_device *csdev = drvdata->csdev;
110
111 CS_UNLOCK(drvdata->base);
112
113 functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
114 functl &= ~(1 << inport);
115 writel_relaxed(functl, drvdata->base + FUNNEL_FUNCTL);
116
117 /* Disclaim the device if none of the slaves are now active */
118 if (!(functl & FUNNEL_ENSx_MASK))
119 coresight_disclaim_device_unlocked(csdev);
120
121 CS_LOCK(drvdata->base);
122}
123
124static void funnel_disable(struct coresight_device *csdev,
125 struct coresight_connection *in,
126 struct coresight_connection *out)
127{
128 struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
129 unsigned long flags;
130 bool last_disable = false;
131
132 spin_lock_irqsave(&drvdata->spinlock, flags);
133 if (atomic_dec_return(&in->dest_refcnt) == 0) {
134 if (drvdata->base)
135 dynamic_funnel_disable_hw(drvdata, in->dest_port);
136 last_disable = true;
137 }
138 spin_unlock_irqrestore(&drvdata->spinlock, flags);
139
140 if (last_disable)
141 dev_dbg(&csdev->dev, "FUNNEL inport %d disabled\n",
142 in->dest_port);
143}
144
145static const struct coresight_ops_link funnel_link_ops = {
146 .enable = funnel_enable,
147 .disable = funnel_disable,
148};
149
150static const struct coresight_ops funnel_cs_ops = {
151 .link_ops = &funnel_link_ops,
152};
153
154static ssize_t priority_show(struct device *dev,
155 struct device_attribute *attr, char *buf)
156{
157 struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
158 unsigned long val = drvdata->priority;
159
160 return sprintf(buf, "%#lx\n", val);
161}
162
163static ssize_t priority_store(struct device *dev,
164 struct device_attribute *attr,
165 const char *buf, size_t size)
166{
167 int ret;
168 unsigned long val;
169 struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
170
171 ret = kstrtoul(buf, 16, &val);
172 if (ret)
173 return ret;
174
175 drvdata->priority = val;
176 return size;
177}
178static DEVICE_ATTR_RW(priority);
179
180static u32 get_funnel_ctrl_hw(struct funnel_drvdata *drvdata)
181{
182 u32 functl;
183
184 CS_UNLOCK(drvdata->base);
185 functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
186 CS_LOCK(drvdata->base);
187
188 return functl;
189}
190
191static ssize_t funnel_ctrl_show(struct device *dev,
192 struct device_attribute *attr, char *buf)
193{
194 u32 val;
195 struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
196
197 pm_runtime_get_sync(dev->parent);
198
199 val = get_funnel_ctrl_hw(drvdata);
200
201 pm_runtime_put(dev->parent);
202
203 return sprintf(buf, "%#x\n", val);
204}
205static DEVICE_ATTR_RO(funnel_ctrl);
206
207static struct attribute *coresight_funnel_attrs[] = {
208 &dev_attr_funnel_ctrl.attr,
209 &dev_attr_priority.attr,
210 NULL,
211};
212ATTRIBUTE_GROUPS(coresight_funnel);
213
214static int funnel_probe(struct device *dev, struct resource *res)
215{
216 int ret;
217 void __iomem *base;
218 struct coresight_platform_data *pdata = NULL;
219 struct funnel_drvdata *drvdata;
220 struct coresight_desc desc = { 0 };
221
222 if (is_of_node(dev_fwnode(dev)) &&
223 of_device_is_compatible(dev->of_node, "arm,coresight-funnel"))
224 dev_warn_once(dev, "Uses OBSOLETE CoreSight funnel binding\n");
225
226 desc.name = coresight_alloc_device_name(&funnel_devs, dev);
227 if (!desc.name)
228 return -ENOMEM;
229
230 drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
231 if (!drvdata)
232 return -ENOMEM;
233
234 drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */
235 if (!IS_ERR(drvdata->atclk)) {
236 ret = clk_prepare_enable(drvdata->atclk);
237 if (ret)
238 return ret;
239 }
240
241 drvdata->pclk = coresight_get_enable_apb_pclk(dev);
242 if (IS_ERR(drvdata->pclk))
243 return -ENODEV;
244
245 /*
246 * Map the device base for dynamic-funnel, 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 = coresight_funnel_groups;
257 desc.access = CSDEV_ACCESS_IOMEM(base);
258 }
259
260 dev_set_drvdata(dev, drvdata);
261
262 pdata = coresight_get_platform_data(dev);
263 if (IS_ERR(pdata)) {
264 ret = PTR_ERR(pdata);
265 goto out_disable_clk;
266 }
267 dev->platform_data = pdata;
268
269 spin_lock_init(&drvdata->spinlock);
270 desc.type = CORESIGHT_DEV_TYPE_LINK;
271 desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG;
272 desc.ops = &funnel_cs_ops;
273 desc.pdata = pdata;
274 desc.dev = dev;
275 drvdata->csdev = coresight_register(&desc);
276 if (IS_ERR(drvdata->csdev)) {
277 ret = PTR_ERR(drvdata->csdev);
278 goto out_disable_clk;
279 }
280
281 ret = 0;
282
283out_disable_clk:
284 if (ret && !IS_ERR_OR_NULL(drvdata->atclk))
285 clk_disable_unprepare(drvdata->atclk);
286 if (ret && !IS_ERR_OR_NULL(drvdata->pclk))
287 clk_disable_unprepare(drvdata->pclk);
288 return ret;
289}
290
291static int funnel_remove(struct device *dev)
292{
293 struct funnel_drvdata *drvdata = dev_get_drvdata(dev);
294
295 coresight_unregister(drvdata->csdev);
296
297 return 0;
298}
299
300#ifdef CONFIG_PM
301static int funnel_runtime_suspend(struct device *dev)
302{
303 struct funnel_drvdata *drvdata = dev_get_drvdata(dev);
304
305 if (drvdata && !IS_ERR(drvdata->atclk))
306 clk_disable_unprepare(drvdata->atclk);
307
308 if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk))
309 clk_disable_unprepare(drvdata->pclk);
310
311 return 0;
312}
313
314static int funnel_runtime_resume(struct device *dev)
315{
316 struct funnel_drvdata *drvdata = dev_get_drvdata(dev);
317
318 if (drvdata && !IS_ERR(drvdata->atclk))
319 clk_prepare_enable(drvdata->atclk);
320
321 if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk))
322 clk_prepare_enable(drvdata->pclk);
323 return 0;
324}
325#endif
326
327static const struct dev_pm_ops funnel_dev_pm_ops = {
328 SET_RUNTIME_PM_OPS(funnel_runtime_suspend, funnel_runtime_resume, NULL)
329};
330
331static int funnel_platform_probe(struct platform_device *pdev)
332{
333 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
334 int ret;
335
336 pm_runtime_get_noresume(&pdev->dev);
337 pm_runtime_set_active(&pdev->dev);
338 pm_runtime_enable(&pdev->dev);
339
340 ret = funnel_probe(&pdev->dev, res);
341 pm_runtime_put(&pdev->dev);
342 if (ret)
343 pm_runtime_disable(&pdev->dev);
344
345 return ret;
346}
347
348static void funnel_platform_remove(struct platform_device *pdev)
349{
350 struct funnel_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
351
352 if (WARN_ON(!drvdata))
353 return;
354
355 funnel_remove(&pdev->dev);
356 pm_runtime_disable(&pdev->dev);
357 if (!IS_ERR_OR_NULL(drvdata->pclk))
358 clk_put(drvdata->pclk);
359}
360
361static const struct of_device_id funnel_match[] = {
362 {.compatible = "arm,coresight-static-funnel"},
363 {}
364};
365
366MODULE_DEVICE_TABLE(of, funnel_match);
367
368#ifdef CONFIG_ACPI
369static const struct acpi_device_id funnel_acpi_ids[] = {
370 {"ARMHC9FE", 0, 0, 0}, /* ARM Coresight Static Funnel */
371 {"ARMHC9FF", 0, 0, 0}, /* ARM CoreSight Dynamic Funnel */
372 {},
373};
374
375MODULE_DEVICE_TABLE(acpi, funnel_acpi_ids);
376#endif
377
378static struct platform_driver funnel_driver = {
379 .probe = funnel_platform_probe,
380 .remove = funnel_platform_remove,
381 .driver = {
382 .name = "coresight-funnel",
383 /* THIS_MODULE is taken care of by platform_driver_register() */
384 .of_match_table = funnel_match,
385 .acpi_match_table = ACPI_PTR(funnel_acpi_ids),
386 .pm = &funnel_dev_pm_ops,
387 .suppress_bind_attrs = true,
388 },
389};
390
391static int dynamic_funnel_probe(struct amba_device *adev,
392 const struct amba_id *id)
393{
394 int ret;
395
396 ret = funnel_probe(&adev->dev, &adev->res);
397 if (!ret)
398 pm_runtime_put(&adev->dev);
399
400 return ret;
401}
402
403static void dynamic_funnel_remove(struct amba_device *adev)
404{
405 funnel_remove(&adev->dev);
406}
407
408static const struct amba_id dynamic_funnel_ids[] = {
409 {
410 .id = 0x000bb908,
411 .mask = 0x000fffff,
412 },
413 {
414 /* Coresight SoC-600 */
415 .id = 0x000bb9eb,
416 .mask = 0x000fffff,
417 },
418 { 0, 0, NULL },
419};
420
421MODULE_DEVICE_TABLE(amba, dynamic_funnel_ids);
422
423static struct amba_driver dynamic_funnel_driver = {
424 .drv = {
425 .name = "coresight-dynamic-funnel",
426 .pm = &funnel_dev_pm_ops,
427 .suppress_bind_attrs = true,
428 },
429 .probe = dynamic_funnel_probe,
430 .remove = dynamic_funnel_remove,
431 .id_table = dynamic_funnel_ids,
432};
433
434static int __init funnel_init(void)
435{
436 return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver);
437}
438
439static void __exit funnel_exit(void)
440{
441 coresight_remove_driver(&dynamic_funnel_driver, &funnel_driver);
442}
443
444module_init(funnel_init);
445module_exit(funnel_exit);
446
447MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>");
448MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>");
449MODULE_DESCRIPTION("Arm CoreSight Funnel Driver");
450MODULE_LICENSE("GPL v2");