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path: root/drivers/mfd/qcom_rpm.c
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-rw-r--r--drivers/mfd/qcom_rpm.c581
1 files changed, 581 insertions, 0 deletions
diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
new file mode 100644
index 000000000000..f696328c2933
--- /dev/null
+++ b/drivers/mfd/qcom_rpm.c
@@ -0,0 +1,581 @@
1/*
2 * Copyright (c) 2014, Sony Mobile Communications AB.
3 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
4 * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 and
8 * only version 2 as published by the Free Software Foundation.
9 *
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.
14 */
15
16#include <linux/module.h>
17#include <linux/platform_device.h>
18#include <linux/of_platform.h>
19#include <linux/io.h>
20#include <linux/interrupt.h>
21#include <linux/mfd/qcom_rpm.h>
22#include <linux/mfd/syscon.h>
23#include <linux/regmap.h>
24
25#include <dt-bindings/mfd/qcom-rpm.h>
26
27struct qcom_rpm_resource {
28 unsigned target_id;
29 unsigned status_id;
30 unsigned select_id;
31 unsigned size;
32};
33
34struct qcom_rpm_data {
35 u32 version;
36 const struct qcom_rpm_resource *resource_table;
37 unsigned n_resources;
38};
39
40struct qcom_rpm {
41 struct device *dev;
42 struct regmap *ipc_regmap;
43 unsigned ipc_offset;
44 unsigned ipc_bit;
45
46 struct completion ack;
47 struct mutex lock;
48
49 void __iomem *status_regs;
50 void __iomem *ctrl_regs;
51 void __iomem *req_regs;
52
53 u32 ack_status;
54
55 const struct qcom_rpm_data *data;
56};
57
58#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4)
59#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4)
60#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4)
61
62#define RPM_REQUEST_TIMEOUT (5 * HZ)
63
64#define RPM_REQUEST_CONTEXT 3
65#define RPM_REQ_SELECT 11
66#define RPM_ACK_CONTEXT 15
67#define RPM_ACK_SELECTOR 23
68#define RPM_SELECT_SIZE 7
69
70#define RPM_NOTIFICATION BIT(30)
71#define RPM_REJECTED BIT(31)
72
73#define RPM_SIGNAL BIT(2)
74
75static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
76 [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
77 [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
78 [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
79 [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
80 [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
81 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
82 [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
83 [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
84 [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
85 [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
86 [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
87 [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
88 [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
89 [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
90 [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
91 [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
92 [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
93 [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
94 [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 },
95 [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 },
96 [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
97 [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 },
98 [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 },
99 [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 },
100 [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 },
101 [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 },
102 [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 },
103 [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 },
104 [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 },
105 [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 },
106 [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 },
107 [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 },
108 [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 },
109 [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 },
110 [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 },
111 [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 },
112 [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 },
113 [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 },
114 [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 },
115 [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 },
116 [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 },
117 [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 },
118 [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 },
119 [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 },
120 [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 },
121 [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 },
122 [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 },
123 [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 },
124 [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 },
125 [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 },
126 [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 },
127 [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 },
128 [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 },
129 [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 },
130 [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 },
131 [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 },
132 [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 },
133 [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 },
134 [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 },
135 [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 },
136 [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 },
137 [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 },
138 [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 },
139 [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 },
140 [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 },
141 [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 },
142 [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 },
143 [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 },
144 [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 },
145 [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 },
146 [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 },
147 [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 },
148 [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 },
149 [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 },
150 [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 },
151 [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 },
152 [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 },
153};
154
155static const struct qcom_rpm_data apq8064_template = {
156 .version = 3,
157 .resource_table = apq8064_rpm_resource_table,
158 .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
159};
160
161static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
162 [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 },
163 [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 },
164 [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 },
165 [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 },
166 [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 },
167 [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 },
168 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 },
169 [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 },
170 [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 },
171 [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 },
172 [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 },
173 [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 },
174 [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 },
175 [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 },
176 [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 },
177 [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 },
178 [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 },
179 [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 },
180 [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 },
181 [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 },
182 [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 },
183 [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 },
184 [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 },
185 [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 },
186 [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 },
187 [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 },
188 [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 },
189 [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 },
190 [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 },
191 [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 },
192 [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 },
193 [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 },
194 [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 },
195 [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 },
196 [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 },
197 [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 },
198 [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 },
199 [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 },
200 [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 },
201 [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 },
202 [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 },
203 [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 },
204 [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 },
205 [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 },
206 [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 },
207 [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 },
208 [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 },
209 [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 },
210 [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 },
211 [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 },
212 [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 },
213 [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 },
214 [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 },
215 [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 },
216 [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 },
217 [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 },
218 [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 },
219 [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 },
220 [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 },
221 [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 },
222 [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 },
223 [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 },
224 [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 },
225 [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 },
226 [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 },
227 [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 },
228 [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 },
229 [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 },
230 [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 },
231 [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 },
232 [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 },
233 [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 },
234 [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 },
235 [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 },
236};
237
238static const struct qcom_rpm_data msm8660_template = {
239 .version = 2,
240 .resource_table = msm8660_rpm_resource_table,
241 .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
242};
243
244static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
245 [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
246 [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
247 [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
248 [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
249 [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
250 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
251 [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
252 [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
253 [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
254 [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
255 [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
256 [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
257 [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
258 [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
259 [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
260 [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
261 [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
262 [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 },
263 [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 },
264 [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 },
265 [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 },
266 [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 },
267 [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 },
268 [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 },
269 [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 },
270 [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 },
271 [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 },
272 [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 },
273 [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 },
274 [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 },
275 [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 },
276 [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 },
277 [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 },
278 [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 },
279 [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 },
280 [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 },
281 [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 },
282 [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 },
283 [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 },
284 [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 },
285 [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 },
286 [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 },
287 [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 },
288 [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 },
289 [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 },
290 [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 },
291 [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 },
292 [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 },
293 [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 },
294 [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 },
295 [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 },
296 [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 },
297 [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 },
298 [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 },
299 [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 },
300 [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 },
301 [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 },
302 [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 },
303 [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 },
304 [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 },
305 [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 },
306 [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 },
307 [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 },
308 [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 },
309 [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 },
310 [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 },
311 [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 },
312 [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 },
313 [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 },
314 [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 },
315 [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 },
316 [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 },
317 [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 },
318};
319
320static const struct qcom_rpm_data msm8960_template = {
321 .version = 3,
322 .resource_table = msm8960_rpm_resource_table,
323 .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
324};
325
326static const struct of_device_id qcom_rpm_of_match[] = {
327 { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
328 { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
329 { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
330 { }
331};
332MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
333
334int qcom_rpm_write(struct qcom_rpm *rpm,
335 int state,
336 int resource,
337 u32 *buf, size_t count)
338{
339 const struct qcom_rpm_resource *res;
340 const struct qcom_rpm_data *data = rpm->data;
341 u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
342 int left;
343 int ret = 0;
344 int i;
345
346 if (WARN_ON(resource < 0 || resource >= data->n_resources))
347 return -EINVAL;
348
349 res = &data->resource_table[resource];
350 if (WARN_ON(res->size != count))
351 return -EINVAL;
352
353 mutex_lock(&rpm->lock);
354
355 for (i = 0; i < res->size; i++)
356 writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
357
358 bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
359 for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
360 writel_relaxed(sel_mask[i],
361 RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
362 }
363
364 writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
365
366 reinit_completion(&rpm->ack);
367 regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
368
369 left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
370 if (!left)
371 ret = -ETIMEDOUT;
372 else if (rpm->ack_status & RPM_REJECTED)
373 ret = -EIO;
374
375 mutex_unlock(&rpm->lock);
376
377 return ret;
378}
379EXPORT_SYMBOL(qcom_rpm_write);
380
381static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
382{
383 struct qcom_rpm *rpm = dev;
384 u32 ack;
385 int i;
386
387 ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
388 for (i = 0; i < RPM_SELECT_SIZE; i++)
389 writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
390 writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
391
392 if (ack & RPM_NOTIFICATION) {
393 dev_warn(rpm->dev, "ignoring notification!\n");
394 } else {
395 rpm->ack_status = ack;
396 complete(&rpm->ack);
397 }
398
399 return IRQ_HANDLED;
400}
401
402static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
403{
404 struct qcom_rpm *rpm = dev;
405
406 regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
407 dev_err(rpm->dev, "RPM triggered fatal error\n");
408
409 return IRQ_HANDLED;
410}
411
412static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
413{
414 return IRQ_HANDLED;
415}
416
417static int qcom_rpm_probe(struct platform_device *pdev)
418{
419 const struct of_device_id *match;
420 struct device_node *syscon_np;
421 struct resource *res;
422 struct qcom_rpm *rpm;
423 u32 fw_version[3];
424 int irq_wakeup;
425 int irq_ack;
426 int irq_err;
427 int ret;
428
429 rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
430 if (!rpm)
431 return -ENOMEM;
432
433 rpm->dev = &pdev->dev;
434 mutex_init(&rpm->lock);
435 init_completion(&rpm->ack);
436
437 irq_ack = platform_get_irq_byname(pdev, "ack");
438 if (irq_ack < 0) {
439 dev_err(&pdev->dev, "required ack interrupt missing\n");
440 return irq_ack;
441 }
442
443 irq_err = platform_get_irq_byname(pdev, "err");
444 if (irq_err < 0) {
445 dev_err(&pdev->dev, "required err interrupt missing\n");
446 return irq_err;
447 }
448
449 irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
450 if (irq_wakeup < 0) {
451 dev_err(&pdev->dev, "required wakeup interrupt missing\n");
452 return irq_wakeup;
453 }
454
455 match = of_match_device(qcom_rpm_of_match, &pdev->dev);
456 rpm->data = match->data;
457
458 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
459 rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
460 if (IS_ERR(rpm->status_regs))
461 return PTR_ERR(rpm->status_regs);
462 rpm->ctrl_regs = rpm->status_regs + 0x400;
463 rpm->req_regs = rpm->status_regs + 0x600;
464
465 syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
466 if (!syscon_np) {
467 dev_err(&pdev->dev, "no qcom,ipc node\n");
468 return -ENODEV;
469 }
470
471 rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
472 if (IS_ERR(rpm->ipc_regmap))
473 return PTR_ERR(rpm->ipc_regmap);
474
475 ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
476 &rpm->ipc_offset);
477 if (ret < 0) {
478 dev_err(&pdev->dev, "no offset in qcom,ipc\n");
479 return -EINVAL;
480 }
481
482 ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
483 &rpm->ipc_bit);
484 if (ret < 0) {
485 dev_err(&pdev->dev, "no bit in qcom,ipc\n");
486 return -EINVAL;
487 }
488
489 dev_set_drvdata(&pdev->dev, rpm);
490
491 fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
492 fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
493 fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
494 if (fw_version[0] != rpm->data->version) {
495 dev_err(&pdev->dev,
496 "RPM version %u.%u.%u incompatible with driver version %u",
497 fw_version[0],
498 fw_version[1],
499 fw_version[2],
500 rpm->data->version);
501 return -EFAULT;
502 }
503
504 dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
505 fw_version[1],
506 fw_version[2]);
507
508 ret = devm_request_irq(&pdev->dev,
509 irq_ack,
510 qcom_rpm_ack_interrupt,
511 IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND,
512 "qcom_rpm_ack",
513 rpm);
514 if (ret) {
515 dev_err(&pdev->dev, "failed to request ack interrupt\n");
516 return ret;
517 }
518
519 ret = irq_set_irq_wake(irq_ack, 1);
520 if (ret)
521 dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
522
523 ret = devm_request_irq(&pdev->dev,
524 irq_err,
525 qcom_rpm_err_interrupt,
526 IRQF_TRIGGER_RISING,
527 "qcom_rpm_err",
528 rpm);
529 if (ret) {
530 dev_err(&pdev->dev, "failed to request err interrupt\n");
531 return ret;
532 }
533
534 ret = devm_request_irq(&pdev->dev,
535 irq_wakeup,
536 qcom_rpm_wakeup_interrupt,
537 IRQF_TRIGGER_RISING,
538 "qcom_rpm_wakeup",
539 rpm);
540 if (ret) {
541 dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
542 return ret;
543 }
544
545 ret = irq_set_irq_wake(irq_wakeup, 1);
546 if (ret)
547 dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
548
549 return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
550}
551
552static int qcom_rpm_remove(struct platform_device *pdev)
553{
554 of_platform_depopulate(&pdev->dev);
555 return 0;
556}
557
558static struct platform_driver qcom_rpm_driver = {
559 .probe = qcom_rpm_probe,
560 .remove = qcom_rpm_remove,
561 .driver = {
562 .name = "qcom_rpm",
563 .of_match_table = qcom_rpm_of_match,
564 },
565};
566
567static int __init qcom_rpm_init(void)
568{
569 return platform_driver_register(&qcom_rpm_driver);
570}
571arch_initcall(qcom_rpm_init);
572
573static void __exit qcom_rpm_exit(void)
574{
575 platform_driver_unregister(&qcom_rpm_driver);
576}
577module_exit(qcom_rpm_exit)
578
579MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
580MODULE_LICENSE("GPL v2");
581MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 08:53:11 -0500