1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2014, Sony Mobile Communications AB.
4 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
5 * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
6 */
7
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/of_platform.h>
11 #include <linux/io.h>
12 #include <linux/interrupt.h>
13 #include <linux/mfd/qcom_rpm.h>
14 #include <linux/mfd/syscon.h>
15 #include <linux/regmap.h>
16 #include <linux/clk.h>
17
18 #include <dt-bindings/mfd/qcom-rpm.h>
19
20 struct qcom_rpm_resource {
21 unsigned target_id;
22 unsigned status_id;
23 unsigned select_id;
24 unsigned size;
25 };
26
27 struct qcom_rpm_data {
28 u32 version;
29 const struct qcom_rpm_resource *resource_table;
30 unsigned int n_resources;
31 unsigned int req_ctx_off;
32 unsigned int req_sel_off;
33 unsigned int ack_ctx_off;
34 unsigned int ack_sel_off;
35 unsigned int req_sel_size;
36 unsigned int ack_sel_size;
37 };
38
39 struct qcom_rpm {
40 struct device *dev;
41 struct regmap *ipc_regmap;
42 unsigned ipc_offset;
43 unsigned ipc_bit;
44 struct clk *ramclk;
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_MAX_SEL_SIZE 7
65
66 #define RPM_NOTIFICATION BIT(30)
67 #define RPM_REJECTED BIT(31)
68
69 static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
70 [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
71 [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
72 [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
73 [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
74 [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
75 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
76 [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
77 [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
78 [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
79 [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
80 [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
81 [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
82 [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
83 [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
84 [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
85 [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
86 [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
87 [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
88 [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 },
89 [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 },
90 [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
91 [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 },
92 [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 },
93 [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 },
94 [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 },
95 [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 },
96 [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 },
97 [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 },
98 [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 },
99 [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 },
100 [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 },
101 [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 },
102 [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 },
103 [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 },
104 [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 },
105 [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 },
106 [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 },
107 [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 },
108 [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 },
109 [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 },
110 [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 },
111 [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 },
112 [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 },
113 [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 },
114 [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 },
115 [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 },
116 [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 },
117 [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 },
118 [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 },
119 [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 },
120 [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 },
121 [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 },
122 [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 },
123 [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 },
124 [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 },
125 [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 },
126 [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 },
127 [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 },
128 [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 },
129 [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 },
130 [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 },
131 [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 },
132 [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 },
133 [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 },
134 [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 },
135 [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 },
136 [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 },
137 [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 },
138 [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 },
139 [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 },
140 [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 },
141 [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 },
142 [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 },
143 [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 },
144 [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 },
145 [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 },
146 [QCOM_RPM_QDSS_CLK] = { 214, ~0, 7, 1 },
147 [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 },
148 };
149
150 static const struct qcom_rpm_data apq8064_template = {
151 .version = 3,
152 .resource_table = apq8064_rpm_resource_table,
153 .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
154 .req_ctx_off = 3,
155 .req_sel_off = 11,
156 .ack_ctx_off = 15,
157 .ack_sel_off = 23,
158 .req_sel_size = 4,
159 .ack_sel_size = 7,
160 };
161
162 static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
163 [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 },
164 [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 },
165 [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 },
166 [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 },
167 [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 },
168 [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 },
169 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 },
170 [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 },
171 [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 },
172 [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 },
173 [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 },
174 [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 },
175 [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 },
176 [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 },
177 [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 },
178 [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 },
179 [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 },
180 [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 },
181 [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 },
182 [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 },
183 [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 },
184 [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 },
185 [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 },
186 [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 },
187 [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 },
188 [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 },
189 [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 },
190 [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 },
191 [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 },
192 [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 },
193 [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 },
194 [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 },
195 [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 },
196 [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 },
197 [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 },
198 [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 },
199 [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 },
200 [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 },
201 [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 },
202 [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 },
203 [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 },
204 [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 },
205 [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 },
206 [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 },
207 [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 },
208 [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 },
209 [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 },
210 [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 },
211 [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 },
212 [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 },
213 [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 },
214 [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 },
215 [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 },
216 [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 },
217 [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 },
218 [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 },
219 [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 },
220 [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 },
221 [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 },
222 [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 },
223 [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 },
224 [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 },
225 [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 },
226 [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 },
227 [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 },
228 [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 },
229 [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 },
230 [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 },
231 [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 },
232 [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 },
233 [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 },
234 [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 },
235 [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 },
236 [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 },
237 };
238
239 static const struct qcom_rpm_data msm8660_template = {
240 .version = 2,
241 .resource_table = msm8660_rpm_resource_table,
242 .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
243 .req_ctx_off = 3,
244 .req_sel_off = 11,
245 .ack_ctx_off = 19,
246 .ack_sel_off = 27,
247 .req_sel_size = 7,
248 .ack_sel_size = 7,
249 };
250
251 static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
252 [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
253 [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
254 [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
255 [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
256 [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
257 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
258 [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
259 [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
260 [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
261 [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
262 [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
263 [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
264 [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
265 [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
266 [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
267 [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
268 [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
269 [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 },
270 [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 },
271 [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 },
272 [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 },
273 [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 },
274 [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 },
275 [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 },
276 [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 },
277 [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 },
278 [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 },
279 [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 },
280 [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 },
281 [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 },
282 [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 },
283 [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 },
284 [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 },
285 [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 },
286 [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 },
287 [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 },
288 [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 },
289 [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 },
290 [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 },
291 [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 },
292 [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 },
293 [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 },
294 [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 },
295 [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 },
296 [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 },
297 [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 },
298 [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 },
299 [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 },
300 [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 },
301 [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 },
302 [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 },
303 [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 },
304 [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 },
305 [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 },
306 [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 },
307 [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 },
308 [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 },
309 [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 },
310 [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 },
311 [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 },
312 [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 },
313 [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 },
314 [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 },
315 [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 },
316 [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 },
317 [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 },
318 [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 },
319 [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 },
320 [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 },
321 [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 },
322 [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 },
323 [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 },
324 [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 },
325 };
326
327 static const struct qcom_rpm_data msm8960_template = {
328 .version = 3,
329 .resource_table = msm8960_rpm_resource_table,
330 .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
331 .req_ctx_off = 3,
332 .req_sel_off = 11,
333 .ack_ctx_off = 15,
334 .ack_sel_off = 23,
335 .req_sel_size = 4,
336 .ack_sel_size = 7,
337 };
338
339 static const struct qcom_rpm_resource ipq806x_rpm_resource_table[] = {
340 [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
341 [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
342 [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
343 [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
344 [QCOM_RPM_NSS_FABRIC_0_CLK] = { 29, 13, 10, 1 },
345 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
346 [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
347 [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
348 [QCOM_RPM_NSS_FABRIC_1_CLK] = { 33, 17, 14, 1 },
349 [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
350 [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 2 },
351 [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 3 },
352 [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
353 [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
354 [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 2 },
355 [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 3 },
356 [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
357 [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
358 [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 2 },
359 [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 3 },
360 [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
361 [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 2 },
362 [QCOM_RPM_CXO_BUFFERS] = { 209, 33, 31, 1 },
363 [QCOM_RPM_USB_OTG_SWITCH] = { 210, 34, 32, 1 },
364 [QCOM_RPM_HDMI_SWITCH] = { 211, 35, 33, 1 },
365 [QCOM_RPM_DDR_DMM] = { 212, 36, 34, 2 },
366 [QCOM_RPM_VDDMIN_GPIO] = { 215, 40, 39, 1 },
367 [QCOM_RPM_SMB208_S1a] = { 216, 41, 90, 2 },
368 [QCOM_RPM_SMB208_S1b] = { 218, 43, 91, 2 },
369 [QCOM_RPM_SMB208_S2a] = { 220, 45, 92, 2 },
370 [QCOM_RPM_SMB208_S2b] = { 222, 47, 93, 2 },
371 };
372
373 static const struct qcom_rpm_data ipq806x_template = {
374 .version = 3,
375 .resource_table = ipq806x_rpm_resource_table,
376 .n_resources = ARRAY_SIZE(ipq806x_rpm_resource_table),
377 .req_ctx_off = 3,
378 .req_sel_off = 11,
379 .ack_ctx_off = 15,
380 .ack_sel_off = 23,
381 .req_sel_size = 4,
382 .ack_sel_size = 7,
383 };
384
385 static const struct qcom_rpm_resource mdm9615_rpm_resource_table[] = {
386 [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
387 [QCOM_RPM_SYS_FABRIC_CLK] = { 26, 10, 9, 1 },
388 [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 27, 11, 11, 1 },
389 [QCOM_RPM_SFPB_CLK] = { 28, 12, 12, 1 },
390 [QCOM_RPM_CFPB_CLK] = { 29, 13, 13, 1 },
391 [QCOM_RPM_EBI1_CLK] = { 30, 14, 16, 1 },
392 [QCOM_RPM_APPS_FABRIC_HALT] = { 31, 15, 22, 2 },
393 [QCOM_RPM_APPS_FABRIC_MODE] = { 33, 16, 23, 3 },
394 [QCOM_RPM_APPS_FABRIC_IOCTL] = { 36, 17, 24, 1 },
395 [QCOM_RPM_APPS_FABRIC_ARB] = { 37, 18, 25, 27 },
396 [QCOM_RPM_PM8018_SMPS1] = { 64, 19, 30, 2 },
397 [QCOM_RPM_PM8018_SMPS2] = { 66, 21, 31, 2 },
398 [QCOM_RPM_PM8018_SMPS3] = { 68, 23, 32, 2 },
399 [QCOM_RPM_PM8018_SMPS4] = { 70, 25, 33, 2 },
400 [QCOM_RPM_PM8018_SMPS5] = { 72, 27, 34, 2 },
401 [QCOM_RPM_PM8018_LDO1] = { 74, 29, 35, 2 },
402 [QCOM_RPM_PM8018_LDO2] = { 76, 31, 36, 2 },
403 [QCOM_RPM_PM8018_LDO3] = { 78, 33, 37, 2 },
404 [QCOM_RPM_PM8018_LDO4] = { 80, 35, 38, 2 },
405 [QCOM_RPM_PM8018_LDO5] = { 82, 37, 39, 2 },
406 [QCOM_RPM_PM8018_LDO6] = { 84, 39, 40, 2 },
407 [QCOM_RPM_PM8018_LDO7] = { 86, 41, 41, 2 },
408 [QCOM_RPM_PM8018_LDO8] = { 88, 43, 42, 2 },
409 [QCOM_RPM_PM8018_LDO9] = { 90, 45, 43, 2 },
410 [QCOM_RPM_PM8018_LDO10] = { 92, 47, 44, 2 },
411 [QCOM_RPM_PM8018_LDO11] = { 94, 49, 45, 2 },
412 [QCOM_RPM_PM8018_LDO12] = { 96, 51, 46, 2 },
413 [QCOM_RPM_PM8018_LDO13] = { 98, 53, 47, 2 },
414 [QCOM_RPM_PM8018_LDO14] = { 100, 55, 48, 2 },
415 [QCOM_RPM_PM8018_LVS1] = { 102, 57, 49, 1 },
416 [QCOM_RPM_PM8018_NCP] = { 103, 58, 80, 2 },
417 [QCOM_RPM_CXO_BUFFERS] = { 105, 60, 81, 1 },
418 [QCOM_RPM_USB_OTG_SWITCH] = { 106, 61, 82, 1 },
419 [QCOM_RPM_HDMI_SWITCH] = { 107, 62, 83, 1 },
420 [QCOM_RPM_VOLTAGE_CORNER] = { 109, 64, 87, 1 },
421 };
422
423 static const struct qcom_rpm_data mdm9615_template = {
424 .version = 3,
425 .resource_table = mdm9615_rpm_resource_table,
426 .n_resources = ARRAY_SIZE(mdm9615_rpm_resource_table),
427 .req_ctx_off = 3,
428 .req_sel_off = 11,
429 .ack_ctx_off = 15,
430 .ack_sel_off = 23,
431 .req_sel_size = 4,
432 .ack_sel_size = 7,
433 };
434
435 static const struct of_device_id qcom_rpm_of_match[] = {
436 { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
437 { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
438 { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
439 { .compatible = "qcom,rpm-ipq8064", .data = &ipq806x_template },
440 { .compatible = "qcom,rpm-mdm9615", .data = &mdm9615_template },
441 { }
442 };
443 MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
444
qcom_rpm_write(struct qcom_rpm * rpm,int state,int resource,u32 * buf,size_t count)445 int qcom_rpm_write(struct qcom_rpm *rpm,
446 int state,
447 int resource,
448 u32 *buf, size_t count)
449 {
450 const struct qcom_rpm_resource *res;
451 const struct qcom_rpm_data *data = rpm->data;
452 u32 sel_mask[RPM_MAX_SEL_SIZE] = { 0 };
453 int left;
454 int ret = 0;
455 int i;
456
457 if (WARN_ON(resource < 0 || resource >= data->n_resources))
458 return -EINVAL;
459
460 res = &data->resource_table[resource];
461 if (WARN_ON(res->size != count))
462 return -EINVAL;
463
464 mutex_lock(&rpm->lock);
465
466 for (i = 0; i < res->size; i++)
467 writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
468
469 bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
470 for (i = 0; i < rpm->data->req_sel_size; i++) {
471 writel_relaxed(sel_mask[i],
472 RPM_CTRL_REG(rpm, rpm->data->req_sel_off + i));
473 }
474
475 writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, rpm->data->req_ctx_off));
476
477 reinit_completion(&rpm->ack);
478 regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
479
480 left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
481 if (!left)
482 ret = -ETIMEDOUT;
483 else if (rpm->ack_status & RPM_REJECTED)
484 ret = -EIO;
485
486 mutex_unlock(&rpm->lock);
487
488 return ret;
489 }
490 EXPORT_SYMBOL(qcom_rpm_write);
491
qcom_rpm_ack_interrupt(int irq,void * dev)492 static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
493 {
494 struct qcom_rpm *rpm = dev;
495 u32 ack;
496 int i;
497
498 ack = readl_relaxed(RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off));
499 for (i = 0; i < rpm->data->ack_sel_size; i++)
500 writel_relaxed(0,
501 RPM_CTRL_REG(rpm, rpm->data->ack_sel_off + i));
502 writel(0, RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off));
503
504 if (ack & RPM_NOTIFICATION) {
505 dev_warn(rpm->dev, "ignoring notification!\n");
506 } else {
507 rpm->ack_status = ack;
508 complete(&rpm->ack);
509 }
510
511 return IRQ_HANDLED;
512 }
513
qcom_rpm_err_interrupt(int irq,void * dev)514 static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
515 {
516 struct qcom_rpm *rpm = dev;
517
518 regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
519 dev_err(rpm->dev, "RPM triggered fatal error\n");
520
521 return IRQ_HANDLED;
522 }
523
qcom_rpm_wakeup_interrupt(int irq,void * dev)524 static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
525 {
526 return IRQ_HANDLED;
527 }
528
qcom_rpm_probe(struct platform_device * pdev)529 static int qcom_rpm_probe(struct platform_device *pdev)
530 {
531 const struct of_device_id *match;
532 struct device_node *syscon_np;
533 struct resource *res;
534 struct qcom_rpm *rpm;
535 u32 fw_version[3];
536 int irq_wakeup;
537 int irq_ack;
538 int irq_err;
539 int ret;
540
541 rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
542 if (!rpm)
543 return -ENOMEM;
544
545 rpm->dev = &pdev->dev;
546 mutex_init(&rpm->lock);
547 init_completion(&rpm->ack);
548
549 /* Enable message RAM clock */
550 rpm->ramclk = devm_clk_get(&pdev->dev, "ram");
551 if (IS_ERR(rpm->ramclk)) {
552 ret = PTR_ERR(rpm->ramclk);
553 if (ret == -EPROBE_DEFER)
554 return ret;
555 /*
556 * Fall through in all other cases, as the clock is
557 * optional. (Does not exist on all platforms.)
558 */
559 rpm->ramclk = NULL;
560 }
561 clk_prepare_enable(rpm->ramclk); /* Accepts NULL */
562
563 irq_ack = platform_get_irq_byname(pdev, "ack");
564 if (irq_ack < 0)
565 return irq_ack;
566
567 irq_err = platform_get_irq_byname(pdev, "err");
568 if (irq_err < 0)
569 return irq_err;
570
571 irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
572 if (irq_wakeup < 0)
573 return irq_wakeup;
574
575 match = of_match_device(qcom_rpm_of_match, &pdev->dev);
576 if (!match)
577 return -ENODEV;
578 rpm->data = match->data;
579
580 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
581 rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
582 if (IS_ERR(rpm->status_regs))
583 return PTR_ERR(rpm->status_regs);
584 rpm->ctrl_regs = rpm->status_regs + 0x400;
585 rpm->req_regs = rpm->status_regs + 0x600;
586
587 syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
588 if (!syscon_np) {
589 dev_err(&pdev->dev, "no qcom,ipc node\n");
590 return -ENODEV;
591 }
592
593 rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
594 of_node_put(syscon_np);
595 if (IS_ERR(rpm->ipc_regmap))
596 return PTR_ERR(rpm->ipc_regmap);
597
598 ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
599 &rpm->ipc_offset);
600 if (ret < 0) {
601 dev_err(&pdev->dev, "no offset in qcom,ipc\n");
602 return -EINVAL;
603 }
604
605 ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
606 &rpm->ipc_bit);
607 if (ret < 0) {
608 dev_err(&pdev->dev, "no bit in qcom,ipc\n");
609 return -EINVAL;
610 }
611
612 dev_set_drvdata(&pdev->dev, rpm);
613
614 fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
615 fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
616 fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
617 if (fw_version[0] != rpm->data->version) {
618 dev_err(&pdev->dev,
619 "RPM version %u.%u.%u incompatible with driver version %u",
620 fw_version[0],
621 fw_version[1],
622 fw_version[2],
623 rpm->data->version);
624 return -EFAULT;
625 }
626
627 writel(fw_version[0], RPM_CTRL_REG(rpm, 0));
628 writel(fw_version[1], RPM_CTRL_REG(rpm, 1));
629 writel(fw_version[2], RPM_CTRL_REG(rpm, 2));
630
631 dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
632 fw_version[1],
633 fw_version[2]);
634
635 ret = devm_request_irq(&pdev->dev,
636 irq_ack,
637 qcom_rpm_ack_interrupt,
638 IRQF_TRIGGER_RISING,
639 "qcom_rpm_ack",
640 rpm);
641 if (ret) {
642 dev_err(&pdev->dev, "failed to request ack interrupt\n");
643 return ret;
644 }
645
646 ret = irq_set_irq_wake(irq_ack, 1);
647 if (ret)
648 dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
649
650 ret = devm_request_irq(&pdev->dev,
651 irq_err,
652 qcom_rpm_err_interrupt,
653 IRQF_TRIGGER_RISING,
654 "qcom_rpm_err",
655 rpm);
656 if (ret) {
657 dev_err(&pdev->dev, "failed to request err interrupt\n");
658 return ret;
659 }
660
661 ret = devm_request_irq(&pdev->dev,
662 irq_wakeup,
663 qcom_rpm_wakeup_interrupt,
664 IRQF_TRIGGER_RISING,
665 "qcom_rpm_wakeup",
666 rpm);
667 if (ret) {
668 dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
669 return ret;
670 }
671
672 ret = irq_set_irq_wake(irq_wakeup, 1);
673 if (ret)
674 dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
675
676 return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
677 }
678
qcom_rpm_remove(struct platform_device * pdev)679 static int qcom_rpm_remove(struct platform_device *pdev)
680 {
681 struct qcom_rpm *rpm = dev_get_drvdata(&pdev->dev);
682
683 of_platform_depopulate(&pdev->dev);
684 clk_disable_unprepare(rpm->ramclk);
685
686 return 0;
687 }
688
689 static struct platform_driver qcom_rpm_driver = {
690 .probe = qcom_rpm_probe,
691 .remove = qcom_rpm_remove,
692 .driver = {
693 .name = "qcom_rpm",
694 .of_match_table = qcom_rpm_of_match,
695 },
696 };
697
qcom_rpm_init(void)698 static int __init qcom_rpm_init(void)
699 {
700 return platform_driver_register(&qcom_rpm_driver);
701 }
702 arch_initcall(qcom_rpm_init);
703
qcom_rpm_exit(void)704 static void __exit qcom_rpm_exit(void)
705 {
706 platform_driver_unregister(&qcom_rpm_driver);
707 }
708 module_exit(qcom_rpm_exit)
709
710 MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
711 MODULE_LICENSE("GPL v2");
712 MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
713