GNU Linux-libre 5.10.219-gnu1
[releases.git] / drivers / mfd / qcom_rpm.c
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
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
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
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
524 static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
525 {
526         return IRQ_HANDLED;
527 }
528
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
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
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
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>");