1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 */
27
28#include <linux/gpio/machine.h>
29#include <linux/pm_runtime.h>
30#include "amdgpu.h"
31#include "isp_v4_1_1.h"
32
33MODULE_FIRMWARE("amdgpu/isp_4_1_1.bin");
34
35#define ISP_PERFORMANCE_STATE_LOW 0
36#define ISP_PERFORMANCE_STATE_HIGH 1
37
38#define ISP_HIGH_PERFORMANC_XCLK 788
39#define ISP_HIGH_PERFORMANC_ICLK 788
40
41static const unsigned int isp_4_1_1_int_srcid[MAX_ISP411_INT_SRC] = {
42 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT9,
43 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT10,
44 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT11,
45 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT12,
46 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT13,
47 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT14,
48 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT15,
49 ISP_4_1__SRCID__ISP_RINGBUFFER_WPT16
50};
51
52static struct gpiod_lookup_table isp_gpio_table = {
53 .dev_id = "amd_isp_capture",
54 .table = {
55 GPIO_LOOKUP("AMDI0030:00", 85, "enable_isp", GPIO_ACTIVE_HIGH),
56 { }
57 },
58};
59
60static struct gpiod_lookup_table isp_sensor_gpio_table = {
61 .dev_id = "i2c-ov05c10",
62 .table = {
63 GPIO_LOOKUP("amdisp-pinctrl", 0, "enable", GPIO_ACTIVE_HIGH),
64 { }
65 },
66};
67
68static int isp_poweroff(struct generic_pm_domain *genpd)
69{
70 struct amdgpu_isp *isp = container_of(genpd, struct amdgpu_isp, ispgpd);
71 struct amdgpu_device *adev = isp->adev;
72
73 return amdgpu_dpm_set_powergating_by_smu(adev, block_type: AMD_IP_BLOCK_TYPE_ISP, gate: true, inst: 0);
74}
75
76static int isp_poweron(struct generic_pm_domain *genpd)
77{
78 struct amdgpu_isp *isp = container_of(genpd, struct amdgpu_isp, ispgpd);
79 struct amdgpu_device *adev = isp->adev;
80
81 return amdgpu_dpm_set_powergating_by_smu(adev, block_type: AMD_IP_BLOCK_TYPE_ISP, gate: false, inst: 0);
82}
83
84static int isp_set_performance_state(struct generic_pm_domain *genpd,
85 unsigned int state)
86{
87 struct amdgpu_isp *isp = container_of(genpd, struct amdgpu_isp, ispgpd);
88 struct amdgpu_device *adev = isp->adev;
89 u32 iclk, xclk;
90 int ret;
91
92 switch (state) {
93 case ISP_PERFORMANCE_STATE_HIGH:
94 xclk = ISP_HIGH_PERFORMANC_XCLK;
95 iclk = ISP_HIGH_PERFORMANC_ICLK;
96 break;
97 case ISP_PERFORMANCE_STATE_LOW:
98 /* isp runs at default lowest clock-rate on power-on, do nothing */
99 return 0;
100 default:
101 return -EINVAL;
102 }
103
104 ret = amdgpu_dpm_set_soft_freq_range(adev, type: PP_ISPXCLK, min: xclk, max: 0);
105 if (ret) {
106 drm_err(&adev->ddev, "failed to set xclk %u to %u: %d\n",
107 xclk, state, ret);
108 return ret;
109 }
110
111 ret = amdgpu_dpm_set_soft_freq_range(adev, type: PP_ISPICLK, min: iclk, max: 0);
112 if (ret) {
113 drm_err(&adev->ddev, "failed to set iclk %u to %u: %d\n",
114 iclk, state, ret);
115 return ret;
116 }
117
118 return 0;
119}
120
121static int isp_genpd_add_device(struct device *dev, void *data)
122{
123 struct generic_pm_domain *gpd = data;
124 struct platform_device *pdev = container_of(dev, struct platform_device, dev);
125 struct amdgpu_isp *isp = container_of(gpd, struct amdgpu_isp, ispgpd);
126 struct amdgpu_device *adev = isp->adev;
127 int ret;
128
129 if (!pdev)
130 return -EINVAL;
131
132 if (!dev->type->name) {
133 drm_dbg(&adev->ddev, "Invalid device type to add\n");
134 goto exit;
135 }
136
137 if (strcmp(dev->type->name, "mfd_device")) {
138 drm_dbg(&adev->ddev, "Invalid isp mfd device %s to add\n", pdev->mfd_cell->name);
139 goto exit;
140 }
141
142 ret = pm_genpd_add_device(genpd: gpd, dev);
143 if (ret) {
144 drm_err(&adev->ddev, "Failed to add dev %s to genpd %d\n",
145 pdev->mfd_cell->name, ret);
146 return -ENODEV;
147 }
148
149 /* The devices will be managed by the pm ops from the parent */
150 dev_pm_syscore_device(dev, val: true);
151
152exit:
153 /* Continue to add */
154 return 0;
155}
156
157static int isp_genpd_remove_device(struct device *dev, void *data)
158{
159 struct generic_pm_domain *gpd = data;
160 struct platform_device *pdev = container_of(dev, struct platform_device, dev);
161 struct amdgpu_isp *isp = container_of(gpd, struct amdgpu_isp, ispgpd);
162 struct amdgpu_device *adev = isp->adev;
163 int ret;
164
165 if (!pdev)
166 return -EINVAL;
167
168 if (!dev->type->name) {
169 drm_dbg(&adev->ddev, "Invalid device type to remove\n");
170 goto exit;
171 }
172
173 if (strcmp(dev->type->name, "mfd_device")) {
174 drm_dbg(&adev->ddev, "Invalid isp mfd device %s to remove\n",
175 pdev->mfd_cell->name);
176 goto exit;
177 }
178
179 ret = pm_genpd_remove_device(dev);
180 if (ret) {
181 drm_err(&adev->ddev, "Failed to remove dev from genpd %d\n", ret);
182 return -ENODEV;
183 }
184 dev_pm_syscore_device(dev, val: false);
185
186exit:
187 /* Continue to remove */
188 return 0;
189}
190
191static int isp_suspend_device(struct device *dev, void *data)
192{
193 return pm_runtime_force_suspend(dev);
194}
195
196static int isp_resume_device(struct device *dev, void *data)
197{
198 return pm_runtime_force_resume(dev);
199}
200
201static int isp_v4_1_1_hw_suspend(struct amdgpu_isp *isp)
202{
203 int r;
204
205 r = device_for_each_child(parent: isp->parent, NULL,
206 fn: isp_suspend_device);
207 if (r)
208 dev_err(isp->parent, "failed to suspend hw devices (%d)\n", r);
209
210 return r;
211}
212
213static int isp_v4_1_1_hw_resume(struct amdgpu_isp *isp)
214{
215 int r;
216
217 r = device_for_each_child(parent: isp->parent, NULL,
218 fn: isp_resume_device);
219 if (r)
220 dev_err(isp->parent, "failed to resume hw device (%d)\n", r);
221
222 return r;
223}
224
225static int isp_v4_1_1_hw_init(struct amdgpu_isp *isp)
226{
227 const struct software_node *amd_camera_node, *isp4_node;
228 struct amdgpu_device *adev = isp->adev;
229 struct acpi_device *acpi_dev;
230 int idx, int_idx, num_res, r;
231 u64 isp_base;
232
233 if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289)
234 return -EINVAL;
235
236 r = amdgpu_acpi_get_isp4_dev(dev: &acpi_dev);
237 if (r) {
238 drm_dbg(&adev->ddev, "Invalid isp platform detected (%d)", r);
239 /* allow GPU init to progress */
240 return 0;
241 }
242
243 /* add GPIO resources required for OMNI5C10 sensor */
244 if (!strcmp("OMNI5C10", acpi_device_hid(device: acpi_dev))) {
245 gpiod_add_lookup_table(table: &isp_gpio_table);
246 gpiod_add_lookup_table(table: &isp_sensor_gpio_table);
247 }
248
249 isp_base = adev->rmmio_base;
250
251 isp->ispgpd.name = "ISP_v_4_1_1";
252 isp->ispgpd.power_off = isp_poweroff;
253 isp->ispgpd.power_on = isp_poweron;
254 isp->ispgpd.set_performance_state = isp_set_performance_state;
255
256 r = pm_genpd_init(genpd: &isp->ispgpd, NULL, is_off: true);
257 if (r) {
258 drm_err(&adev->ddev, "failed to initialize genpd (%d)\n", r);
259 return -EINVAL;
260 }
261
262 isp->isp_cell = kcalloc(3, sizeof(struct mfd_cell), GFP_KERNEL);
263 if (!isp->isp_cell) {
264 r = -ENOMEM;
265 drm_err(&adev->ddev, "isp mfd cell alloc failed (%d)\n", r);
266 goto failure;
267 }
268
269 num_res = MAX_ISP411_MEM_RES + MAX_ISP411_INT_SRC;
270
271 isp->isp_res = kcalloc(num_res, sizeof(struct resource),
272 GFP_KERNEL);
273 if (!isp->isp_res) {
274 r = -ENOMEM;
275 drm_err(&adev->ddev, "isp mfd resource alloc failed (%d)\n", r);
276 goto failure;
277 }
278
279 isp->isp_pdata = kzalloc(sizeof(*isp->isp_pdata), GFP_KERNEL);
280 if (!isp->isp_pdata) {
281 r = -ENOMEM;
282 drm_err(&adev->ddev, "isp platform data alloc failed (%d)\n", r);
283 goto failure;
284 }
285
286 amd_camera_node = (const struct software_node *)acpi_dev->driver_data;
287 isp4_node = software_node_find_by_name(parent: amd_camera_node, name: "isp4");
288
289 /* initialize isp platform data */
290 isp->isp_pdata->adev = (void *)adev;
291 isp->isp_pdata->asic_type = adev->asic_type;
292 isp->isp_pdata->base_rmmio_size = adev->rmmio_size;
293
294 isp->isp_res[0].name = "isp_4_1_1_reg";
295 isp->isp_res[0].flags = IORESOURCE_MEM;
296 isp->isp_res[0].start = isp_base;
297 isp->isp_res[0].end = isp_base + ISP_REGS_OFFSET_END;
298
299 isp->isp_res[1].name = "isp_4_1_1_phy0_reg";
300 isp->isp_res[1].flags = IORESOURCE_MEM;
301 isp->isp_res[1].start = isp_base + ISP411_PHY0_OFFSET;
302 isp->isp_res[1].end = isp_base + ISP411_PHY0_OFFSET + ISP411_PHY0_SIZE;
303
304 for (idx = MAX_ISP411_MEM_RES, int_idx = 0; idx < num_res; idx++, int_idx++) {
305 isp->isp_res[idx].name = "isp_4_1_1_irq";
306 isp->isp_res[idx].flags = IORESOURCE_IRQ;
307 isp->isp_res[idx].start =
308 amdgpu_irq_create_mapping(adev, src_id: isp_4_1_1_int_srcid[int_idx]);
309 isp->isp_res[idx].end =
310 isp->isp_res[idx].start;
311 }
312
313 isp->isp_cell[0].name = "amd_isp_capture";
314 isp->isp_cell[0].num_resources = num_res;
315 isp->isp_cell[0].resources = &isp->isp_res[0];
316 isp->isp_cell[0].platform_data = isp->isp_pdata;
317 isp->isp_cell[0].swnode = isp4_node;
318 isp->isp_cell[0].pdata_size = sizeof(struct isp_platform_data);
319
320 /* initialize isp i2c platform data */
321 isp->isp_i2c_res = kcalloc(1, sizeof(struct resource), GFP_KERNEL);
322 if (!isp->isp_i2c_res) {
323 r = -ENOMEM;
324 drm_err(&adev->ddev, "isp mfd res alloc failed (%d)\n", r);
325 goto failure;
326 }
327
328 isp->isp_i2c_res[0].name = "isp_i2c0_reg";
329 isp->isp_i2c_res[0].flags = IORESOURCE_MEM;
330 isp->isp_i2c_res[0].start = isp_base + ISP411_I2C0_OFFSET;
331 isp->isp_i2c_res[0].end = isp_base + ISP411_I2C0_OFFSET + ISP411_I2C0_SIZE;
332
333 isp->isp_cell[1].name = "amd_isp_i2c_designware";
334 isp->isp_cell[1].num_resources = 1;
335 isp->isp_cell[1].resources = &isp->isp_i2c_res[0];
336 isp->isp_cell[1].platform_data = isp->isp_pdata;
337 isp->isp_cell[1].pdata_size = sizeof(struct isp_platform_data);
338
339 /* initialize isp gpiochip platform data */
340 isp->isp_gpio_res = kcalloc(1, sizeof(struct resource), GFP_KERNEL);
341 if (!isp->isp_gpio_res) {
342 r = -ENOMEM;
343 drm_err(&adev->ddev, "isp gpio resource alloc failed (%d)\n", r);
344 goto failure;
345 }
346
347 isp->isp_gpio_res[0].name = "isp_gpio_reg";
348 isp->isp_gpio_res[0].flags = IORESOURCE_MEM;
349 isp->isp_gpio_res[0].start = isp_base + ISP411_GPIO_SENSOR_OFFSET;
350 isp->isp_gpio_res[0].end = isp_base + ISP411_GPIO_SENSOR_OFFSET +
351 ISP411_GPIO_SENSOR_SIZE;
352
353 isp->isp_cell[2].name = "amdisp-pinctrl";
354 isp->isp_cell[2].num_resources = 1;
355 isp->isp_cell[2].resources = &isp->isp_gpio_res[0];
356 isp->isp_cell[2].platform_data = isp->isp_pdata;
357 isp->isp_cell[2].pdata_size = sizeof(struct isp_platform_data);
358
359 /* add only amd_isp_capture and amd_isp_i2c_designware to genpd */
360 r = mfd_add_hotplug_devices(parent: isp->parent, cells: isp->isp_cell, n_devs: 2);
361 if (r) {
362 drm_err(&adev->ddev, "add mfd hotplug device failed (%d)\n", r);
363 goto failure;
364 }
365
366 r = device_for_each_child(parent: isp->parent, data: &isp->ispgpd,
367 fn: isp_genpd_add_device);
368 if (r) {
369 drm_err(&adev->ddev, "failed to add devices to genpd (%d)\n", r);
370 goto failure;
371 }
372
373 r = mfd_add_hotplug_devices(parent: isp->parent, cells: &isp->isp_cell[2], n_devs: 1);
374 if (r) {
375 drm_err(&adev->ddev, "add pinctl hotplug device failed (%d)\n", r);
376 goto failure;
377 }
378
379 return 0;
380
381failure:
382
383 kfree(objp: isp->isp_pdata);
384 kfree(objp: isp->isp_res);
385 kfree(objp: isp->isp_cell);
386 kfree(objp: isp->isp_i2c_res);
387 kfree(objp: isp->isp_gpio_res);
388
389 return r;
390}
391
392static int isp_v4_1_1_hw_fini(struct amdgpu_isp *isp)
393{
394 device_for_each_child(parent: isp->parent, NULL,
395 fn: isp_genpd_remove_device);
396
397 mfd_remove_devices(parent: isp->parent);
398
399 kfree(objp: isp->isp_res);
400 kfree(objp: isp->isp_cell);
401 kfree(objp: isp->isp_pdata);
402 kfree(objp: isp->isp_i2c_res);
403 kfree(objp: isp->isp_gpio_res);
404
405 return 0;
406}
407
408static const struct isp_funcs isp_v4_1_1_funcs = {
409 .hw_init = isp_v4_1_1_hw_init,
410 .hw_fini = isp_v4_1_1_hw_fini,
411 .hw_suspend = isp_v4_1_1_hw_suspend,
412 .hw_resume = isp_v4_1_1_hw_resume,
413};
414
415void isp_v4_1_1_set_isp_funcs(struct amdgpu_isp *isp)
416{
417 isp->funcs = &isp_v4_1_1_funcs;
418}
419

source code of linux/drivers/gpu/drm/amd/amdgpu/isp_v4_1_1.c