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0376148f | 1 | // SPDX-License-Identifier: GPL-2.0-only |
e3726fcf | 2 | /* |
adef9cf5 PG |
3 | * DB8500 PRCM Unit driver |
4 | * | |
e0befb23 MP |
5 | * Copyright (C) STMicroelectronics 2009 |
6 | * Copyright (C) ST-Ericsson SA 2010 | |
e3726fcf | 7 | * |
e0befb23 MP |
8 | * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com> |
9 | * Author: Sundar Iyer <sundar.iyer@stericsson.com> | |
e3726fcf LW |
10 | * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> |
11 | * | |
e0befb23 | 12 | * U8500 PRCM Unit interface driver |
e3726fcf | 13 | */ |
adef9cf5 PG |
14 | #include <linux/init.h> |
15 | #include <linux/export.h> | |
3df57bcf MN |
16 | #include <linux/kernel.h> |
17 | #include <linux/delay.h> | |
e3726fcf LW |
18 | #include <linux/errno.h> |
19 | #include <linux/err.h> | |
3df57bcf | 20 | #include <linux/spinlock.h> |
e3726fcf | 21 | #include <linux/io.h> |
3df57bcf | 22 | #include <linux/slab.h> |
e3726fcf LW |
23 | #include <linux/mutex.h> |
24 | #include <linux/completion.h> | |
3df57bcf | 25 | #include <linux/irq.h> |
e3726fcf LW |
26 | #include <linux/jiffies.h> |
27 | #include <linux/bitops.h> | |
3df57bcf | 28 | #include <linux/fs.h> |
d98a5384 | 29 | #include <linux/of.h> |
22fb3ad0 | 30 | #include <linux/of_address.h> |
f864c46a | 31 | #include <linux/of_irq.h> |
3df57bcf MN |
32 | #include <linux/platform_device.h> |
33 | #include <linux/uaccess.h> | |
34 | #include <linux/mfd/core.h> | |
73180f85 | 35 | #include <linux/mfd/dbx500-prcmu.h> |
3a8e39c9 | 36 | #include <linux/mfd/abx500/ab8500.h> |
1032fbfd BJ |
37 | #include <linux/regulator/db8500-prcmu.h> |
38 | #include <linux/regulator/machine.h> | |
8f00b3c4 | 39 | #include "db8500-prcmu-regs.h" |
3df57bcf | 40 | |
3df57bcf MN |
41 | /* Index of different voltages to be used when accessing AVSData */ |
42 | #define PRCM_AVS_BASE 0x2FC | |
43 | #define PRCM_AVS_VBB_RET (PRCM_AVS_BASE + 0x0) | |
44 | #define PRCM_AVS_VBB_MAX_OPP (PRCM_AVS_BASE + 0x1) | |
45 | #define PRCM_AVS_VBB_100_OPP (PRCM_AVS_BASE + 0x2) | |
46 | #define PRCM_AVS_VBB_50_OPP (PRCM_AVS_BASE + 0x3) | |
47 | #define PRCM_AVS_VARM_MAX_OPP (PRCM_AVS_BASE + 0x4) | |
48 | #define PRCM_AVS_VARM_100_OPP (PRCM_AVS_BASE + 0x5) | |
49 | #define PRCM_AVS_VARM_50_OPP (PRCM_AVS_BASE + 0x6) | |
50 | #define PRCM_AVS_VARM_RET (PRCM_AVS_BASE + 0x7) | |
51 | #define PRCM_AVS_VAPE_100_OPP (PRCM_AVS_BASE + 0x8) | |
52 | #define PRCM_AVS_VAPE_50_OPP (PRCM_AVS_BASE + 0x9) | |
53 | #define PRCM_AVS_VMOD_100_OPP (PRCM_AVS_BASE + 0xA) | |
54 | #define PRCM_AVS_VMOD_50_OPP (PRCM_AVS_BASE + 0xB) | |
55 | #define PRCM_AVS_VSAFE (PRCM_AVS_BASE + 0xC) | |
56 | ||
57 | #define PRCM_AVS_VOLTAGE 0 | |
58 | #define PRCM_AVS_VOLTAGE_MASK 0x3f | |
59 | #define PRCM_AVS_ISSLOWSTARTUP 6 | |
60 | #define PRCM_AVS_ISSLOWSTARTUP_MASK (1 << PRCM_AVS_ISSLOWSTARTUP) | |
61 | #define PRCM_AVS_ISMODEENABLE 7 | |
62 | #define PRCM_AVS_ISMODEENABLE_MASK (1 << PRCM_AVS_ISMODEENABLE) | |
63 | ||
64 | #define PRCM_BOOT_STATUS 0xFFF | |
65 | #define PRCM_ROMCODE_A2P 0xFFE | |
66 | #define PRCM_ROMCODE_P2A 0xFFD | |
67 | #define PRCM_XP70_CUR_PWR_STATE 0xFFC /* 4 BYTES */ | |
68 | ||
69 | #define PRCM_SW_RST_REASON 0xFF8 /* 2 bytes */ | |
70 | ||
71 | #define _PRCM_MBOX_HEADER 0xFE8 /* 16 bytes */ | |
72 | #define PRCM_MBOX_HEADER_REQ_MB0 (_PRCM_MBOX_HEADER + 0x0) | |
73 | #define PRCM_MBOX_HEADER_REQ_MB1 (_PRCM_MBOX_HEADER + 0x1) | |
74 | #define PRCM_MBOX_HEADER_REQ_MB2 (_PRCM_MBOX_HEADER + 0x2) | |
75 | #define PRCM_MBOX_HEADER_REQ_MB3 (_PRCM_MBOX_HEADER + 0x3) | |
76 | #define PRCM_MBOX_HEADER_REQ_MB4 (_PRCM_MBOX_HEADER + 0x4) | |
77 | #define PRCM_MBOX_HEADER_REQ_MB5 (_PRCM_MBOX_HEADER + 0x5) | |
78 | #define PRCM_MBOX_HEADER_ACK_MB0 (_PRCM_MBOX_HEADER + 0x8) | |
79 | ||
80 | /* Req Mailboxes */ | |
81 | #define PRCM_REQ_MB0 0xFDC /* 12 bytes */ | |
82 | #define PRCM_REQ_MB1 0xFD0 /* 12 bytes */ | |
83 | #define PRCM_REQ_MB2 0xFC0 /* 16 bytes */ | |
84 | #define PRCM_REQ_MB3 0xE4C /* 372 bytes */ | |
85 | #define PRCM_REQ_MB4 0xE48 /* 4 bytes */ | |
86 | #define PRCM_REQ_MB5 0xE44 /* 4 bytes */ | |
87 | ||
88 | /* Ack Mailboxes */ | |
89 | #define PRCM_ACK_MB0 0xE08 /* 52 bytes */ | |
90 | #define PRCM_ACK_MB1 0xE04 /* 4 bytes */ | |
91 | #define PRCM_ACK_MB2 0xE00 /* 4 bytes */ | |
92 | #define PRCM_ACK_MB3 0xDFC /* 4 bytes */ | |
93 | #define PRCM_ACK_MB4 0xDF8 /* 4 bytes */ | |
94 | #define PRCM_ACK_MB5 0xDF4 /* 4 bytes */ | |
95 | ||
96 | /* Mailbox 0 headers */ | |
97 | #define MB0H_POWER_STATE_TRANS 0 | |
98 | #define MB0H_CONFIG_WAKEUPS_EXE 1 | |
99 | #define MB0H_READ_WAKEUP_ACK 3 | |
100 | #define MB0H_CONFIG_WAKEUPS_SLEEP 4 | |
101 | ||
102 | #define MB0H_WAKEUP_EXE 2 | |
103 | #define MB0H_WAKEUP_SLEEP 5 | |
104 | ||
105 | /* Mailbox 0 REQs */ | |
106 | #define PRCM_REQ_MB0_AP_POWER_STATE (PRCM_REQ_MB0 + 0x0) | |
107 | #define PRCM_REQ_MB0_AP_PLL_STATE (PRCM_REQ_MB0 + 0x1) | |
108 | #define PRCM_REQ_MB0_ULP_CLOCK_STATE (PRCM_REQ_MB0 + 0x2) | |
109 | #define PRCM_REQ_MB0_DO_NOT_WFI (PRCM_REQ_MB0 + 0x3) | |
110 | #define PRCM_REQ_MB0_WAKEUP_8500 (PRCM_REQ_MB0 + 0x4) | |
111 | #define PRCM_REQ_MB0_WAKEUP_4500 (PRCM_REQ_MB0 + 0x8) | |
112 | ||
113 | /* Mailbox 0 ACKs */ | |
114 | #define PRCM_ACK_MB0_AP_PWRSTTR_STATUS (PRCM_ACK_MB0 + 0x0) | |
115 | #define PRCM_ACK_MB0_READ_POINTER (PRCM_ACK_MB0 + 0x1) | |
116 | #define PRCM_ACK_MB0_WAKEUP_0_8500 (PRCM_ACK_MB0 + 0x4) | |
117 | #define PRCM_ACK_MB0_WAKEUP_0_4500 (PRCM_ACK_MB0 + 0x8) | |
118 | #define PRCM_ACK_MB0_WAKEUP_1_8500 (PRCM_ACK_MB0 + 0x1C) | |
119 | #define PRCM_ACK_MB0_WAKEUP_1_4500 (PRCM_ACK_MB0 + 0x20) | |
120 | #define PRCM_ACK_MB0_EVENT_4500_NUMBERS 20 | |
121 | ||
122 | /* Mailbox 1 headers */ | |
123 | #define MB1H_ARM_APE_OPP 0x0 | |
124 | #define MB1H_RESET_MODEM 0x2 | |
125 | #define MB1H_REQUEST_APE_OPP_100_VOLT 0x3 | |
126 | #define MB1H_RELEASE_APE_OPP_100_VOLT 0x4 | |
127 | #define MB1H_RELEASE_USB_WAKEUP 0x5 | |
a592c2e2 | 128 | #define MB1H_PLL_ON_OFF 0x6 |
3df57bcf MN |
129 | |
130 | /* Mailbox 1 Requests */ | |
131 | #define PRCM_REQ_MB1_ARM_OPP (PRCM_REQ_MB1 + 0x0) | |
132 | #define PRCM_REQ_MB1_APE_OPP (PRCM_REQ_MB1 + 0x1) | |
a592c2e2 | 133 | #define PRCM_REQ_MB1_PLL_ON_OFF (PRCM_REQ_MB1 + 0x4) |
6b6fae2b MN |
134 | #define PLL_SOC0_OFF 0x1 |
135 | #define PLL_SOC0_ON 0x2 | |
a592c2e2 MN |
136 | #define PLL_SOC1_OFF 0x4 |
137 | #define PLL_SOC1_ON 0x8 | |
3df57bcf MN |
138 | |
139 | /* Mailbox 1 ACKs */ | |
140 | #define PRCM_ACK_MB1_CURRENT_ARM_OPP (PRCM_ACK_MB1 + 0x0) | |
141 | #define PRCM_ACK_MB1_CURRENT_APE_OPP (PRCM_ACK_MB1 + 0x1) | |
142 | #define PRCM_ACK_MB1_APE_VOLTAGE_STATUS (PRCM_ACK_MB1 + 0x2) | |
143 | #define PRCM_ACK_MB1_DVFS_STATUS (PRCM_ACK_MB1 + 0x3) | |
144 | ||
145 | /* Mailbox 2 headers */ | |
146 | #define MB2H_DPS 0x0 | |
147 | #define MB2H_AUTO_PWR 0x1 | |
148 | ||
149 | /* Mailbox 2 REQs */ | |
150 | #define PRCM_REQ_MB2_SVA_MMDSP (PRCM_REQ_MB2 + 0x0) | |
151 | #define PRCM_REQ_MB2_SVA_PIPE (PRCM_REQ_MB2 + 0x1) | |
152 | #define PRCM_REQ_MB2_SIA_MMDSP (PRCM_REQ_MB2 + 0x2) | |
153 | #define PRCM_REQ_MB2_SIA_PIPE (PRCM_REQ_MB2 + 0x3) | |
154 | #define PRCM_REQ_MB2_SGA (PRCM_REQ_MB2 + 0x4) | |
155 | #define PRCM_REQ_MB2_B2R2_MCDE (PRCM_REQ_MB2 + 0x5) | |
156 | #define PRCM_REQ_MB2_ESRAM12 (PRCM_REQ_MB2 + 0x6) | |
157 | #define PRCM_REQ_MB2_ESRAM34 (PRCM_REQ_MB2 + 0x7) | |
158 | #define PRCM_REQ_MB2_AUTO_PM_SLEEP (PRCM_REQ_MB2 + 0x8) | |
159 | #define PRCM_REQ_MB2_AUTO_PM_IDLE (PRCM_REQ_MB2 + 0xC) | |
160 | ||
161 | /* Mailbox 2 ACKs */ | |
162 | #define PRCM_ACK_MB2_DPS_STATUS (PRCM_ACK_MB2 + 0x0) | |
163 | #define HWACC_PWR_ST_OK 0xFE | |
164 | ||
165 | /* Mailbox 3 headers */ | |
166 | #define MB3H_ANC 0x0 | |
167 | #define MB3H_SIDETONE 0x1 | |
168 | #define MB3H_SYSCLK 0xE | |
169 | ||
170 | /* Mailbox 3 Requests */ | |
171 | #define PRCM_REQ_MB3_ANC_FIR_COEFF (PRCM_REQ_MB3 + 0x0) | |
172 | #define PRCM_REQ_MB3_ANC_IIR_COEFF (PRCM_REQ_MB3 + 0x20) | |
173 | #define PRCM_REQ_MB3_ANC_SHIFTER (PRCM_REQ_MB3 + 0x60) | |
174 | #define PRCM_REQ_MB3_ANC_WARP (PRCM_REQ_MB3 + 0x64) | |
175 | #define PRCM_REQ_MB3_SIDETONE_FIR_GAIN (PRCM_REQ_MB3 + 0x68) | |
176 | #define PRCM_REQ_MB3_SIDETONE_FIR_COEFF (PRCM_REQ_MB3 + 0x6C) | |
177 | #define PRCM_REQ_MB3_SYSCLK_MGT (PRCM_REQ_MB3 + 0x16C) | |
178 | ||
179 | /* Mailbox 4 headers */ | |
180 | #define MB4H_DDR_INIT 0x0 | |
181 | #define MB4H_MEM_ST 0x1 | |
182 | #define MB4H_HOTDOG 0x12 | |
183 | #define MB4H_HOTMON 0x13 | |
184 | #define MB4H_HOT_PERIOD 0x14 | |
a592c2e2 MN |
185 | #define MB4H_A9WDOG_CONF 0x16 |
186 | #define MB4H_A9WDOG_EN 0x17 | |
187 | #define MB4H_A9WDOG_DIS 0x18 | |
188 | #define MB4H_A9WDOG_LOAD 0x19 | |
189 | #define MB4H_A9WDOG_KICK 0x20 | |
3df57bcf MN |
190 | |
191 | /* Mailbox 4 Requests */ | |
192 | #define PRCM_REQ_MB4_DDR_ST_AP_SLEEP_IDLE (PRCM_REQ_MB4 + 0x0) | |
193 | #define PRCM_REQ_MB4_DDR_ST_AP_DEEP_IDLE (PRCM_REQ_MB4 + 0x1) | |
194 | #define PRCM_REQ_MB4_ESRAM0_ST (PRCM_REQ_MB4 + 0x3) | |
195 | #define PRCM_REQ_MB4_HOTDOG_THRESHOLD (PRCM_REQ_MB4 + 0x0) | |
196 | #define PRCM_REQ_MB4_HOTMON_LOW (PRCM_REQ_MB4 + 0x0) | |
197 | #define PRCM_REQ_MB4_HOTMON_HIGH (PRCM_REQ_MB4 + 0x1) | |
198 | #define PRCM_REQ_MB4_HOTMON_CONFIG (PRCM_REQ_MB4 + 0x2) | |
199 | #define PRCM_REQ_MB4_HOT_PERIOD (PRCM_REQ_MB4 + 0x0) | |
200 | #define HOTMON_CONFIG_LOW BIT(0) | |
201 | #define HOTMON_CONFIG_HIGH BIT(1) | |
a592c2e2 MN |
202 | #define PRCM_REQ_MB4_A9WDOG_0 (PRCM_REQ_MB4 + 0x0) |
203 | #define PRCM_REQ_MB4_A9WDOG_1 (PRCM_REQ_MB4 + 0x1) | |
204 | #define PRCM_REQ_MB4_A9WDOG_2 (PRCM_REQ_MB4 + 0x2) | |
205 | #define PRCM_REQ_MB4_A9WDOG_3 (PRCM_REQ_MB4 + 0x3) | |
206 | #define A9WDOG_AUTO_OFF_EN BIT(7) | |
207 | #define A9WDOG_AUTO_OFF_DIS 0 | |
208 | #define A9WDOG_ID_MASK 0xf | |
3df57bcf MN |
209 | |
210 | /* Mailbox 5 Requests */ | |
211 | #define PRCM_REQ_MB5_I2C_SLAVE_OP (PRCM_REQ_MB5 + 0x0) | |
212 | #define PRCM_REQ_MB5_I2C_HW_BITS (PRCM_REQ_MB5 + 0x1) | |
213 | #define PRCM_REQ_MB5_I2C_REG (PRCM_REQ_MB5 + 0x2) | |
214 | #define PRCM_REQ_MB5_I2C_VAL (PRCM_REQ_MB5 + 0x3) | |
7a4f2609 LW |
215 | #define PRCMU_I2C_WRITE(slave) (((slave) << 1) | BIT(6)) |
216 | #define PRCMU_I2C_READ(slave) (((slave) << 1) | BIT(0) | BIT(6)) | |
3df57bcf MN |
217 | #define PRCMU_I2C_STOP_EN BIT(3) |
218 | ||
219 | /* Mailbox 5 ACKs */ | |
220 | #define PRCM_ACK_MB5_I2C_STATUS (PRCM_ACK_MB5 + 0x1) | |
221 | #define PRCM_ACK_MB5_I2C_VAL (PRCM_ACK_MB5 + 0x3) | |
222 | #define I2C_WR_OK 0x1 | |
223 | #define I2C_RD_OK 0x2 | |
224 | ||
225 | #define NUM_MB 8 | |
226 | #define MBOX_BIT BIT | |
227 | #define ALL_MBOX_BITS (MBOX_BIT(NUM_MB) - 1) | |
228 | ||
229 | /* | |
230 | * Wakeups/IRQs | |
231 | */ | |
232 | ||
233 | #define WAKEUP_BIT_RTC BIT(0) | |
234 | #define WAKEUP_BIT_RTT0 BIT(1) | |
235 | #define WAKEUP_BIT_RTT1 BIT(2) | |
236 | #define WAKEUP_BIT_HSI0 BIT(3) | |
237 | #define WAKEUP_BIT_HSI1 BIT(4) | |
238 | #define WAKEUP_BIT_CA_WAKE BIT(5) | |
239 | #define WAKEUP_BIT_USB BIT(6) | |
240 | #define WAKEUP_BIT_ABB BIT(7) | |
241 | #define WAKEUP_BIT_ABB_FIFO BIT(8) | |
242 | #define WAKEUP_BIT_SYSCLK_OK BIT(9) | |
243 | #define WAKEUP_BIT_CA_SLEEP BIT(10) | |
244 | #define WAKEUP_BIT_AC_WAKE_ACK BIT(11) | |
245 | #define WAKEUP_BIT_SIDE_TONE_OK BIT(12) | |
246 | #define WAKEUP_BIT_ANC_OK BIT(13) | |
247 | #define WAKEUP_BIT_SW_ERROR BIT(14) | |
248 | #define WAKEUP_BIT_AC_SLEEP_ACK BIT(15) | |
249 | #define WAKEUP_BIT_ARM BIT(17) | |
250 | #define WAKEUP_BIT_HOTMON_LOW BIT(18) | |
251 | #define WAKEUP_BIT_HOTMON_HIGH BIT(19) | |
252 | #define WAKEUP_BIT_MODEM_SW_RESET_REQ BIT(20) | |
253 | #define WAKEUP_BIT_GPIO0 BIT(23) | |
254 | #define WAKEUP_BIT_GPIO1 BIT(24) | |
255 | #define WAKEUP_BIT_GPIO2 BIT(25) | |
256 | #define WAKEUP_BIT_GPIO3 BIT(26) | |
257 | #define WAKEUP_BIT_GPIO4 BIT(27) | |
258 | #define WAKEUP_BIT_GPIO5 BIT(28) | |
259 | #define WAKEUP_BIT_GPIO6 BIT(29) | |
260 | #define WAKEUP_BIT_GPIO7 BIT(30) | |
261 | #define WAKEUP_BIT_GPIO8 BIT(31) | |
262 | ||
b58d12fe MN |
263 | static struct { |
264 | bool valid; | |
265 | struct prcmu_fw_version version; | |
266 | } fw_info; | |
267 | ||
f3f1f0a1 LJ |
268 | static struct irq_domain *db8500_irq_domain; |
269 | ||
3df57bcf MN |
270 | /* |
271 | * This vector maps irq numbers to the bits in the bit field used in | |
272 | * communication with the PRCMU firmware. | |
273 | * | |
274 | * The reason for having this is to keep the irq numbers contiguous even though | |
275 | * the bits in the bit field are not. (The bits also have a tendency to move | |
276 | * around, to further complicate matters.) | |
277 | */ | |
55b175d7 | 278 | #define IRQ_INDEX(_name) ((IRQ_PRCMU_##_name)) |
3df57bcf | 279 | #define IRQ_ENTRY(_name)[IRQ_INDEX(_name)] = (WAKEUP_BIT_##_name) |
55b175d7 AB |
280 | |
281 | #define IRQ_PRCMU_RTC 0 | |
282 | #define IRQ_PRCMU_RTT0 1 | |
283 | #define IRQ_PRCMU_RTT1 2 | |
284 | #define IRQ_PRCMU_HSI0 3 | |
285 | #define IRQ_PRCMU_HSI1 4 | |
286 | #define IRQ_PRCMU_CA_WAKE 5 | |
287 | #define IRQ_PRCMU_USB 6 | |
288 | #define IRQ_PRCMU_ABB 7 | |
289 | #define IRQ_PRCMU_ABB_FIFO 8 | |
290 | #define IRQ_PRCMU_ARM 9 | |
291 | #define IRQ_PRCMU_MODEM_SW_RESET_REQ 10 | |
292 | #define IRQ_PRCMU_GPIO0 11 | |
293 | #define IRQ_PRCMU_GPIO1 12 | |
294 | #define IRQ_PRCMU_GPIO2 13 | |
295 | #define IRQ_PRCMU_GPIO3 14 | |
296 | #define IRQ_PRCMU_GPIO4 15 | |
297 | #define IRQ_PRCMU_GPIO5 16 | |
298 | #define IRQ_PRCMU_GPIO6 17 | |
299 | #define IRQ_PRCMU_GPIO7 18 | |
300 | #define IRQ_PRCMU_GPIO8 19 | |
301 | #define IRQ_PRCMU_CA_SLEEP 20 | |
302 | #define IRQ_PRCMU_HOTMON_LOW 21 | |
303 | #define IRQ_PRCMU_HOTMON_HIGH 22 | |
304 | #define NUM_PRCMU_WAKEUPS 23 | |
305 | ||
3df57bcf MN |
306 | static u32 prcmu_irq_bit[NUM_PRCMU_WAKEUPS] = { |
307 | IRQ_ENTRY(RTC), | |
308 | IRQ_ENTRY(RTT0), | |
309 | IRQ_ENTRY(RTT1), | |
310 | IRQ_ENTRY(HSI0), | |
311 | IRQ_ENTRY(HSI1), | |
312 | IRQ_ENTRY(CA_WAKE), | |
313 | IRQ_ENTRY(USB), | |
314 | IRQ_ENTRY(ABB), | |
315 | IRQ_ENTRY(ABB_FIFO), | |
316 | IRQ_ENTRY(CA_SLEEP), | |
317 | IRQ_ENTRY(ARM), | |
318 | IRQ_ENTRY(HOTMON_LOW), | |
319 | IRQ_ENTRY(HOTMON_HIGH), | |
320 | IRQ_ENTRY(MODEM_SW_RESET_REQ), | |
321 | IRQ_ENTRY(GPIO0), | |
322 | IRQ_ENTRY(GPIO1), | |
323 | IRQ_ENTRY(GPIO2), | |
324 | IRQ_ENTRY(GPIO3), | |
325 | IRQ_ENTRY(GPIO4), | |
326 | IRQ_ENTRY(GPIO5), | |
327 | IRQ_ENTRY(GPIO6), | |
328 | IRQ_ENTRY(GPIO7), | |
329 | IRQ_ENTRY(GPIO8) | |
330 | }; | |
331 | ||
332 | #define VALID_WAKEUPS (BIT(NUM_PRCMU_WAKEUP_INDICES) - 1) | |
333 | #define WAKEUP_ENTRY(_name)[PRCMU_WAKEUP_INDEX_##_name] = (WAKEUP_BIT_##_name) | |
334 | static u32 prcmu_wakeup_bit[NUM_PRCMU_WAKEUP_INDICES] = { | |
335 | WAKEUP_ENTRY(RTC), | |
336 | WAKEUP_ENTRY(RTT0), | |
337 | WAKEUP_ENTRY(RTT1), | |
338 | WAKEUP_ENTRY(HSI0), | |
339 | WAKEUP_ENTRY(HSI1), | |
340 | WAKEUP_ENTRY(USB), | |
341 | WAKEUP_ENTRY(ABB), | |
342 | WAKEUP_ENTRY(ABB_FIFO), | |
343 | WAKEUP_ENTRY(ARM) | |
344 | }; | |
345 | ||
346 | /* | |
347 | * mb0_transfer - state needed for mailbox 0 communication. | |
348 | * @lock: The transaction lock. | |
349 | * @dbb_events_lock: A lock used to handle concurrent access to (parts of) | |
350 | * the request data. | |
351 | * @mask_work: Work structure used for (un)masking wakeup interrupts. | |
352 | * @req: Request data that need to persist between requests. | |
353 | */ | |
354 | static struct { | |
355 | spinlock_t lock; | |
356 | spinlock_t dbb_irqs_lock; | |
357 | struct work_struct mask_work; | |
358 | struct mutex ac_wake_lock; | |
359 | struct completion ac_wake_work; | |
360 | struct { | |
361 | u32 dbb_irqs; | |
362 | u32 dbb_wakeups; | |
363 | u32 abb_events; | |
364 | } req; | |
365 | } mb0_transfer; | |
366 | ||
367 | /* | |
368 | * mb1_transfer - state needed for mailbox 1 communication. | |
369 | * @lock: The transaction lock. | |
370 | * @work: The transaction completion structure. | |
4d64d2e3 | 371 | * @ape_opp: The current APE OPP. |
3df57bcf MN |
372 | * @ack: Reply ("acknowledge") data. |
373 | */ | |
374 | static struct { | |
375 | struct mutex lock; | |
376 | struct completion work; | |
4d64d2e3 | 377 | u8 ape_opp; |
3df57bcf MN |
378 | struct { |
379 | u8 header; | |
380 | u8 arm_opp; | |
381 | u8 ape_opp; | |
382 | u8 ape_voltage_status; | |
383 | } ack; | |
384 | } mb1_transfer; | |
385 | ||
386 | /* | |
387 | * mb2_transfer - state needed for mailbox 2 communication. | |
388 | * @lock: The transaction lock. | |
389 | * @work: The transaction completion structure. | |
390 | * @auto_pm_lock: The autonomous power management configuration lock. | |
391 | * @auto_pm_enabled: A flag indicating whether autonomous PM is enabled. | |
392 | * @req: Request data that need to persist between requests. | |
393 | * @ack: Reply ("acknowledge") data. | |
394 | */ | |
395 | static struct { | |
396 | struct mutex lock; | |
397 | struct completion work; | |
398 | spinlock_t auto_pm_lock; | |
399 | bool auto_pm_enabled; | |
400 | struct { | |
401 | u8 status; | |
402 | } ack; | |
403 | } mb2_transfer; | |
404 | ||
405 | /* | |
406 | * mb3_transfer - state needed for mailbox 3 communication. | |
407 | * @lock: The request lock. | |
408 | * @sysclk_lock: A lock used to handle concurrent sysclk requests. | |
409 | * @sysclk_work: Work structure used for sysclk requests. | |
410 | */ | |
411 | static struct { | |
412 | spinlock_t lock; | |
413 | struct mutex sysclk_lock; | |
414 | struct completion sysclk_work; | |
415 | } mb3_transfer; | |
416 | ||
417 | /* | |
418 | * mb4_transfer - state needed for mailbox 4 communication. | |
419 | * @lock: The transaction lock. | |
420 | * @work: The transaction completion structure. | |
421 | */ | |
422 | static struct { | |
423 | struct mutex lock; | |
424 | struct completion work; | |
425 | } mb4_transfer; | |
426 | ||
427 | /* | |
428 | * mb5_transfer - state needed for mailbox 5 communication. | |
429 | * @lock: The transaction lock. | |
430 | * @work: The transaction completion structure. | |
431 | * @ack: Reply ("acknowledge") data. | |
432 | */ | |
433 | static struct { | |
434 | struct mutex lock; | |
435 | struct completion work; | |
436 | struct { | |
437 | u8 status; | |
438 | u8 value; | |
439 | } ack; | |
440 | } mb5_transfer; | |
441 | ||
442 | static atomic_t ac_wake_req_state = ATOMIC_INIT(0); | |
443 | ||
444 | /* Spinlocks */ | |
b4a6dbd5 | 445 | static DEFINE_SPINLOCK(prcmu_lock); |
3df57bcf | 446 | static DEFINE_SPINLOCK(clkout_lock); |
3df57bcf MN |
447 | |
448 | /* Global var to runtime determine TCDM base for v2 or v1 */ | |
449 | static __iomem void *tcdm_base; | |
b047d981 | 450 | static __iomem void *prcmu_base; |
3df57bcf MN |
451 | |
452 | struct clk_mgt { | |
b047d981 | 453 | u32 offset; |
3df57bcf | 454 | u32 pllsw; |
6b6fae2b MN |
455 | int branch; |
456 | bool clk38div; | |
457 | }; | |
458 | ||
459 | enum { | |
460 | PLL_RAW, | |
461 | PLL_FIX, | |
462 | PLL_DIV | |
3df57bcf MN |
463 | }; |
464 | ||
465 | static DEFINE_SPINLOCK(clk_mgt_lock); | |
466 | ||
6b6fae2b MN |
467 | #define CLK_MGT_ENTRY(_name, _branch, _clk38div)[PRCMU_##_name] = \ |
468 | { (PRCM_##_name##_MGT), 0 , _branch, _clk38div} | |
6746f232 | 469 | static struct clk_mgt clk_mgt[PRCMU_NUM_REG_CLOCKS] = { |
6b6fae2b MN |
470 | CLK_MGT_ENTRY(SGACLK, PLL_DIV, false), |
471 | CLK_MGT_ENTRY(UARTCLK, PLL_FIX, true), | |
472 | CLK_MGT_ENTRY(MSP02CLK, PLL_FIX, true), | |
473 | CLK_MGT_ENTRY(MSP1CLK, PLL_FIX, true), | |
474 | CLK_MGT_ENTRY(I2CCLK, PLL_FIX, true), | |
475 | CLK_MGT_ENTRY(SDMMCCLK, PLL_DIV, true), | |
476 | CLK_MGT_ENTRY(SLIMCLK, PLL_FIX, true), | |
477 | CLK_MGT_ENTRY(PER1CLK, PLL_DIV, true), | |
478 | CLK_MGT_ENTRY(PER2CLK, PLL_DIV, true), | |
479 | CLK_MGT_ENTRY(PER3CLK, PLL_DIV, true), | |
480 | CLK_MGT_ENTRY(PER5CLK, PLL_DIV, true), | |
481 | CLK_MGT_ENTRY(PER6CLK, PLL_DIV, true), | |
482 | CLK_MGT_ENTRY(PER7CLK, PLL_DIV, true), | |
483 | CLK_MGT_ENTRY(LCDCLK, PLL_FIX, true), | |
484 | CLK_MGT_ENTRY(BMLCLK, PLL_DIV, true), | |
485 | CLK_MGT_ENTRY(HSITXCLK, PLL_DIV, true), | |
486 | CLK_MGT_ENTRY(HSIRXCLK, PLL_DIV, true), | |
487 | CLK_MGT_ENTRY(HDMICLK, PLL_FIX, false), | |
488 | CLK_MGT_ENTRY(APEATCLK, PLL_DIV, true), | |
489 | CLK_MGT_ENTRY(APETRACECLK, PLL_DIV, true), | |
490 | CLK_MGT_ENTRY(MCDECLK, PLL_DIV, true), | |
491 | CLK_MGT_ENTRY(IPI2CCLK, PLL_FIX, true), | |
492 | CLK_MGT_ENTRY(DSIALTCLK, PLL_FIX, false), | |
493 | CLK_MGT_ENTRY(DMACLK, PLL_DIV, true), | |
494 | CLK_MGT_ENTRY(B2R2CLK, PLL_DIV, true), | |
495 | CLK_MGT_ENTRY(TVCLK, PLL_FIX, true), | |
496 | CLK_MGT_ENTRY(SSPCLK, PLL_FIX, true), | |
497 | CLK_MGT_ENTRY(RNGCLK, PLL_FIX, true), | |
498 | CLK_MGT_ENTRY(UICCCLK, PLL_FIX, false), | |
499 | }; | |
500 | ||
501 | struct dsiclk { | |
502 | u32 divsel_mask; | |
503 | u32 divsel_shift; | |
504 | u32 divsel; | |
505 | }; | |
506 | ||
507 | static struct dsiclk dsiclk[2] = { | |
508 | { | |
509 | .divsel_mask = PRCM_DSI_PLLOUT_SEL_DSI0_PLLOUT_DIVSEL_MASK, | |
510 | .divsel_shift = PRCM_DSI_PLLOUT_SEL_DSI0_PLLOUT_DIVSEL_SHIFT, | |
511 | .divsel = PRCM_DSI_PLLOUT_SEL_PHI, | |
512 | }, | |
513 | { | |
514 | .divsel_mask = PRCM_DSI_PLLOUT_SEL_DSI1_PLLOUT_DIVSEL_MASK, | |
515 | .divsel_shift = PRCM_DSI_PLLOUT_SEL_DSI1_PLLOUT_DIVSEL_SHIFT, | |
516 | .divsel = PRCM_DSI_PLLOUT_SEL_PHI, | |
517 | } | |
518 | }; | |
519 | ||
520 | struct dsiescclk { | |
521 | u32 en; | |
522 | u32 div_mask; | |
523 | u32 div_shift; | |
524 | }; | |
525 | ||
526 | static struct dsiescclk dsiescclk[3] = { | |
527 | { | |
528 | .en = PRCM_DSITVCLK_DIV_DSI0_ESC_CLK_EN, | |
529 | .div_mask = PRCM_DSITVCLK_DIV_DSI0_ESC_CLK_DIV_MASK, | |
530 | .div_shift = PRCM_DSITVCLK_DIV_DSI0_ESC_CLK_DIV_SHIFT, | |
531 | }, | |
532 | { | |
533 | .en = PRCM_DSITVCLK_DIV_DSI1_ESC_CLK_EN, | |
534 | .div_mask = PRCM_DSITVCLK_DIV_DSI1_ESC_CLK_DIV_MASK, | |
535 | .div_shift = PRCM_DSITVCLK_DIV_DSI1_ESC_CLK_DIV_SHIFT, | |
536 | }, | |
537 | { | |
538 | .en = PRCM_DSITVCLK_DIV_DSI2_ESC_CLK_EN, | |
539 | .div_mask = PRCM_DSITVCLK_DIV_DSI2_ESC_CLK_DIV_MASK, | |
540 | .div_shift = PRCM_DSITVCLK_DIV_DSI2_ESC_CLK_DIV_SHIFT, | |
541 | } | |
3df57bcf MN |
542 | }; |
543 | ||
b4a6dbd5 MN |
544 | u32 db8500_prcmu_read(unsigned int reg) |
545 | { | |
b047d981 | 546 | return readl(prcmu_base + reg); |
b4a6dbd5 MN |
547 | } |
548 | ||
549 | void db8500_prcmu_write(unsigned int reg, u32 value) | |
3df57bcf | 550 | { |
3df57bcf MN |
551 | unsigned long flags; |
552 | ||
b4a6dbd5 | 553 | spin_lock_irqsave(&prcmu_lock, flags); |
b047d981 | 554 | writel(value, (prcmu_base + reg)); |
b4a6dbd5 | 555 | spin_unlock_irqrestore(&prcmu_lock, flags); |
3df57bcf MN |
556 | } |
557 | ||
b4a6dbd5 | 558 | void db8500_prcmu_write_masked(unsigned int reg, u32 mask, u32 value) |
3df57bcf | 559 | { |
b4a6dbd5 | 560 | u32 val; |
3df57bcf MN |
561 | unsigned long flags; |
562 | ||
b4a6dbd5 | 563 | spin_lock_irqsave(&prcmu_lock, flags); |
b047d981 | 564 | val = readl(prcmu_base + reg); |
b4a6dbd5 | 565 | val = ((val & ~mask) | (value & mask)); |
b047d981 | 566 | writel(val, (prcmu_base + reg)); |
b4a6dbd5 | 567 | spin_unlock_irqrestore(&prcmu_lock, flags); |
3df57bcf MN |
568 | } |
569 | ||
b58d12fe MN |
570 | struct prcmu_fw_version *prcmu_get_fw_version(void) |
571 | { | |
572 | return fw_info.valid ? &fw_info.version : NULL; | |
573 | } | |
574 | ||
22fb3ad0 LW |
575 | static bool prcmu_is_ulppll_disabled(void) |
576 | { | |
577 | struct prcmu_fw_version *ver; | |
578 | ||
579 | ver = prcmu_get_fw_version(); | |
580 | return ver && ver->project == PRCMU_FW_PROJECT_U8420_SYSCLK; | |
581 | } | |
582 | ||
3df57bcf MN |
583 | bool prcmu_has_arm_maxopp(void) |
584 | { | |
585 | return (readb(tcdm_base + PRCM_AVS_VARM_MAX_OPP) & | |
586 | PRCM_AVS_ISMODEENABLE_MASK) == PRCM_AVS_ISMODEENABLE_MASK; | |
587 | } | |
588 | ||
3df57bcf MN |
589 | /** |
590 | * prcmu_set_rc_a2p - This function is used to run few power state sequences | |
591 | * @val: Value to be set, i.e. transition requested | |
592 | * Returns: 0 on success, -EINVAL on invalid argument | |
593 | * | |
594 | * This function is used to run the following power state sequences - | |
595 | * any state to ApReset, ApDeepSleep to ApExecute, ApExecute to ApDeepSleep | |
596 | */ | |
597 | int prcmu_set_rc_a2p(enum romcode_write val) | |
598 | { | |
599 | if (val < RDY_2_DS || val > RDY_2_XP70_RST) | |
600 | return -EINVAL; | |
601 | writeb(val, (tcdm_base + PRCM_ROMCODE_A2P)); | |
602 | return 0; | |
603 | } | |
604 | ||
605 | /** | |
606 | * prcmu_get_rc_p2a - This function is used to get power state sequences | |
607 | * Returns: the power transition that has last happened | |
608 | * | |
609 | * This function can return the following transitions- | |
610 | * any state to ApReset, ApDeepSleep to ApExecute, ApExecute to ApDeepSleep | |
611 | */ | |
612 | enum romcode_read prcmu_get_rc_p2a(void) | |
613 | { | |
614 | return readb(tcdm_base + PRCM_ROMCODE_P2A); | |
615 | } | |
616 | ||
617 | /** | |
e00a953b | 618 | * prcmu_get_xp70_current_state - Return the current XP70 power mode |
3df57bcf MN |
619 | * Returns: Returns the current AP(ARM) power mode: init, |
620 | * apBoot, apExecute, apDeepSleep, apSleep, apIdle, apReset | |
621 | */ | |
622 | enum ap_pwrst prcmu_get_xp70_current_state(void) | |
623 | { | |
624 | return readb(tcdm_base + PRCM_XP70_CUR_PWR_STATE); | |
625 | } | |
626 | ||
627 | /** | |
628 | * prcmu_config_clkout - Configure one of the programmable clock outputs. | |
629 | * @clkout: The CLKOUT number (0 or 1). | |
630 | * @source: The clock to be used (one of the PRCMU_CLKSRC_*). | |
631 | * @div: The divider to be applied. | |
632 | * | |
633 | * Configures one of the programmable clock outputs (CLKOUTs). | |
634 | * @div should be in the range [1,63] to request a configuration, or 0 to | |
635 | * inform that the configuration is no longer requested. | |
636 | */ | |
637 | int prcmu_config_clkout(u8 clkout, u8 source, u8 div) | |
638 | { | |
639 | static int requests[2]; | |
640 | int r = 0; | |
641 | unsigned long flags; | |
642 | u32 val; | |
643 | u32 bits; | |
644 | u32 mask; | |
645 | u32 div_mask; | |
646 | ||
647 | BUG_ON(clkout > 1); | |
648 | BUG_ON(div > 63); | |
649 | BUG_ON((clkout == 0) && (source > PRCMU_CLKSRC_CLK009)); | |
650 | ||
651 | if (!div && !requests[clkout]) | |
652 | return -EINVAL; | |
653 | ||
a7e46317 | 654 | if (clkout == 0) { |
3df57bcf MN |
655 | div_mask = PRCM_CLKOCR_CLKODIV0_MASK; |
656 | mask = (PRCM_CLKOCR_CLKODIV0_MASK | PRCM_CLKOCR_CLKOSEL0_MASK); | |
657 | bits = ((source << PRCM_CLKOCR_CLKOSEL0_SHIFT) | | |
658 | (div << PRCM_CLKOCR_CLKODIV0_SHIFT)); | |
a7e46317 | 659 | } else { |
3df57bcf MN |
660 | div_mask = PRCM_CLKOCR_CLKODIV1_MASK; |
661 | mask = (PRCM_CLKOCR_CLKODIV1_MASK | PRCM_CLKOCR_CLKOSEL1_MASK | | |
662 | PRCM_CLKOCR_CLK1TYPE); | |
663 | bits = ((source << PRCM_CLKOCR_CLKOSEL1_SHIFT) | | |
664 | (div << PRCM_CLKOCR_CLKODIV1_SHIFT)); | |
3df57bcf MN |
665 | } |
666 | bits &= mask; | |
667 | ||
668 | spin_lock_irqsave(&clkout_lock, flags); | |
669 | ||
c553b3ca | 670 | val = readl(PRCM_CLKOCR); |
3df57bcf MN |
671 | if (val & div_mask) { |
672 | if (div) { | |
673 | if ((val & mask) != bits) { | |
674 | r = -EBUSY; | |
675 | goto unlock_and_return; | |
676 | } | |
677 | } else { | |
678 | if ((val & mask & ~div_mask) != bits) { | |
679 | r = -EINVAL; | |
680 | goto unlock_and_return; | |
681 | } | |
682 | } | |
683 | } | |
c553b3ca | 684 | writel((bits | (val & ~mask)), PRCM_CLKOCR); |
3df57bcf MN |
685 | requests[clkout] += (div ? 1 : -1); |
686 | ||
687 | unlock_and_return: | |
688 | spin_unlock_irqrestore(&clkout_lock, flags); | |
689 | ||
690 | return r; | |
691 | } | |
692 | ||
73180f85 | 693 | int db8500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll) |
3df57bcf MN |
694 | { |
695 | unsigned long flags; | |
696 | ||
697 | BUG_ON((state < PRCMU_AP_SLEEP) || (PRCMU_AP_DEEP_IDLE < state)); | |
698 | ||
699 | spin_lock_irqsave(&mb0_transfer.lock, flags); | |
700 | ||
c553b3ca | 701 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) |
3df57bcf MN |
702 | cpu_relax(); |
703 | ||
704 | writeb(MB0H_POWER_STATE_TRANS, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0)); | |
705 | writeb(state, (tcdm_base + PRCM_REQ_MB0_AP_POWER_STATE)); | |
706 | writeb((keep_ap_pll ? 1 : 0), (tcdm_base + PRCM_REQ_MB0_AP_PLL_STATE)); | |
707 | writeb((keep_ulp_clk ? 1 : 0), | |
708 | (tcdm_base + PRCM_REQ_MB0_ULP_CLOCK_STATE)); | |
709 | writeb(0, (tcdm_base + PRCM_REQ_MB0_DO_NOT_WFI)); | |
c553b3ca | 710 | writel(MBOX_BIT(0), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
711 | |
712 | spin_unlock_irqrestore(&mb0_transfer.lock, flags); | |
713 | ||
714 | return 0; | |
715 | } | |
716 | ||
4d64d2e3 MN |
717 | u8 db8500_prcmu_get_power_state_result(void) |
718 | { | |
719 | return readb(tcdm_base + PRCM_ACK_MB0_AP_PWRSTTR_STATUS); | |
720 | } | |
721 | ||
3df57bcf MN |
722 | /* This function should only be called while mb0_transfer.lock is held. */ |
723 | static void config_wakeups(void) | |
724 | { | |
725 | const u8 header[2] = { | |
726 | MB0H_CONFIG_WAKEUPS_EXE, | |
727 | MB0H_CONFIG_WAKEUPS_SLEEP | |
728 | }; | |
729 | static u32 last_dbb_events; | |
730 | static u32 last_abb_events; | |
731 | u32 dbb_events; | |
732 | u32 abb_events; | |
733 | unsigned int i; | |
734 | ||
735 | dbb_events = mb0_transfer.req.dbb_irqs | mb0_transfer.req.dbb_wakeups; | |
736 | dbb_events |= (WAKEUP_BIT_AC_WAKE_ACK | WAKEUP_BIT_AC_SLEEP_ACK); | |
737 | ||
738 | abb_events = mb0_transfer.req.abb_events; | |
739 | ||
740 | if ((dbb_events == last_dbb_events) && (abb_events == last_abb_events)) | |
741 | return; | |
742 | ||
743 | for (i = 0; i < 2; i++) { | |
c553b3ca | 744 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) |
3df57bcf MN |
745 | cpu_relax(); |
746 | writel(dbb_events, (tcdm_base + PRCM_REQ_MB0_WAKEUP_8500)); | |
747 | writel(abb_events, (tcdm_base + PRCM_REQ_MB0_WAKEUP_4500)); | |
748 | writeb(header[i], (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0)); | |
c553b3ca | 749 | writel(MBOX_BIT(0), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
750 | } |
751 | last_dbb_events = dbb_events; | |
752 | last_abb_events = abb_events; | |
753 | } | |
754 | ||
73180f85 | 755 | void db8500_prcmu_enable_wakeups(u32 wakeups) |
3df57bcf MN |
756 | { |
757 | unsigned long flags; | |
758 | u32 bits; | |
759 | int i; | |
760 | ||
761 | BUG_ON(wakeups != (wakeups & VALID_WAKEUPS)); | |
762 | ||
763 | for (i = 0, bits = 0; i < NUM_PRCMU_WAKEUP_INDICES; i++) { | |
764 | if (wakeups & BIT(i)) | |
765 | bits |= prcmu_wakeup_bit[i]; | |
766 | } | |
767 | ||
768 | spin_lock_irqsave(&mb0_transfer.lock, flags); | |
769 | ||
770 | mb0_transfer.req.dbb_wakeups = bits; | |
771 | config_wakeups(); | |
772 | ||
773 | spin_unlock_irqrestore(&mb0_transfer.lock, flags); | |
774 | } | |
775 | ||
73180f85 | 776 | void db8500_prcmu_config_abb_event_readout(u32 abb_events) |
3df57bcf MN |
777 | { |
778 | unsigned long flags; | |
779 | ||
780 | spin_lock_irqsave(&mb0_transfer.lock, flags); | |
781 | ||
782 | mb0_transfer.req.abb_events = abb_events; | |
783 | config_wakeups(); | |
784 | ||
785 | spin_unlock_irqrestore(&mb0_transfer.lock, flags); | |
786 | } | |
787 | ||
73180f85 | 788 | void db8500_prcmu_get_abb_event_buffer(void __iomem **buf) |
3df57bcf MN |
789 | { |
790 | if (readb(tcdm_base + PRCM_ACK_MB0_READ_POINTER) & 1) | |
791 | *buf = (tcdm_base + PRCM_ACK_MB0_WAKEUP_1_4500); | |
792 | else | |
793 | *buf = (tcdm_base + PRCM_ACK_MB0_WAKEUP_0_4500); | |
794 | } | |
795 | ||
796 | /** | |
73180f85 | 797 | * db8500_prcmu_set_arm_opp - set the appropriate ARM OPP |
3df57bcf MN |
798 | * @opp: The new ARM operating point to which transition is to be made |
799 | * Returns: 0 on success, non-zero on failure | |
800 | * | |
15ff0bbc | 801 | * This function sets the operating point of the ARM. |
3df57bcf | 802 | */ |
73180f85 | 803 | int db8500_prcmu_set_arm_opp(u8 opp) |
3df57bcf MN |
804 | { |
805 | int r; | |
806 | ||
807 | if (opp < ARM_NO_CHANGE || opp > ARM_EXTCLK) | |
808 | return -EINVAL; | |
809 | ||
810 | r = 0; | |
811 | ||
812 | mutex_lock(&mb1_transfer.lock); | |
813 | ||
c553b3ca | 814 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) |
3df57bcf MN |
815 | cpu_relax(); |
816 | ||
817 | writeb(MB1H_ARM_APE_OPP, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); | |
818 | writeb(opp, (tcdm_base + PRCM_REQ_MB1_ARM_OPP)); | |
819 | writeb(APE_NO_CHANGE, (tcdm_base + PRCM_REQ_MB1_APE_OPP)); | |
820 | ||
c553b3ca | 821 | writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
822 | wait_for_completion(&mb1_transfer.work); |
823 | ||
824 | if ((mb1_transfer.ack.header != MB1H_ARM_APE_OPP) || | |
825 | (mb1_transfer.ack.arm_opp != opp)) | |
826 | r = -EIO; | |
827 | ||
828 | mutex_unlock(&mb1_transfer.lock); | |
829 | ||
830 | return r; | |
831 | } | |
832 | ||
833 | /** | |
73180f85 | 834 | * db8500_prcmu_get_arm_opp - get the current ARM OPP |
3df57bcf MN |
835 | * |
836 | * Returns: the current ARM OPP | |
837 | */ | |
73180f85 | 838 | int db8500_prcmu_get_arm_opp(void) |
3df57bcf MN |
839 | { |
840 | return readb(tcdm_base + PRCM_ACK_MB1_CURRENT_ARM_OPP); | |
841 | } | |
842 | ||
843 | /** | |
0508901c | 844 | * db8500_prcmu_get_ddr_opp - get the current DDR OPP |
3df57bcf MN |
845 | * |
846 | * Returns: the current DDR OPP | |
847 | */ | |
0508901c | 848 | int db8500_prcmu_get_ddr_opp(void) |
3df57bcf | 849 | { |
c553b3ca | 850 | return readb(PRCM_DDR_SUBSYS_APE_MINBW); |
3df57bcf MN |
851 | } |
852 | ||
4d64d2e3 MN |
853 | /* Divide the frequency of certain clocks by 2 for APE_50_PARTLY_25_OPP. */ |
854 | static void request_even_slower_clocks(bool enable) | |
855 | { | |
b047d981 | 856 | u32 clock_reg[] = { |
4d64d2e3 MN |
857 | PRCM_ACLK_MGT, |
858 | PRCM_DMACLK_MGT | |
859 | }; | |
860 | unsigned long flags; | |
861 | unsigned int i; | |
862 | ||
863 | spin_lock_irqsave(&clk_mgt_lock, flags); | |
864 | ||
865 | /* Grab the HW semaphore. */ | |
866 | while ((readl(PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) | |
867 | cpu_relax(); | |
868 | ||
869 | for (i = 0; i < ARRAY_SIZE(clock_reg); i++) { | |
870 | u32 val; | |
871 | u32 div; | |
872 | ||
b047d981 | 873 | val = readl(prcmu_base + clock_reg[i]); |
4d64d2e3 MN |
874 | div = (val & PRCM_CLK_MGT_CLKPLLDIV_MASK); |
875 | if (enable) { | |
876 | if ((div <= 1) || (div > 15)) { | |
877 | pr_err("prcmu: Bad clock divider %d in %s\n", | |
878 | div, __func__); | |
879 | goto unlock_and_return; | |
880 | } | |
881 | div <<= 1; | |
882 | } else { | |
883 | if (div <= 2) | |
884 | goto unlock_and_return; | |
885 | div >>= 1; | |
886 | } | |
887 | val = ((val & ~PRCM_CLK_MGT_CLKPLLDIV_MASK) | | |
888 | (div & PRCM_CLK_MGT_CLKPLLDIV_MASK)); | |
b047d981 | 889 | writel(val, prcmu_base + clock_reg[i]); |
4d64d2e3 MN |
890 | } |
891 | ||
892 | unlock_and_return: | |
893 | /* Release the HW semaphore. */ | |
894 | writel(0, PRCM_SEM); | |
895 | ||
896 | spin_unlock_irqrestore(&clk_mgt_lock, flags); | |
897 | } | |
898 | ||
3df57bcf | 899 | /** |
e00a953b | 900 | * db8500_prcmu_set_ape_opp - set the appropriate APE OPP |
3df57bcf MN |
901 | * @opp: The new APE operating point to which transition is to be made |
902 | * Returns: 0 on success, non-zero on failure | |
903 | * | |
904 | * This function sets the operating point of the APE. | |
905 | */ | |
0508901c | 906 | int db8500_prcmu_set_ape_opp(u8 opp) |
3df57bcf MN |
907 | { |
908 | int r = 0; | |
909 | ||
4d64d2e3 MN |
910 | if (opp == mb1_transfer.ape_opp) |
911 | return 0; | |
912 | ||
3df57bcf MN |
913 | mutex_lock(&mb1_transfer.lock); |
914 | ||
4d64d2e3 MN |
915 | if (mb1_transfer.ape_opp == APE_50_PARTLY_25_OPP) |
916 | request_even_slower_clocks(false); | |
917 | ||
918 | if ((opp != APE_100_OPP) && (mb1_transfer.ape_opp != APE_100_OPP)) | |
919 | goto skip_message; | |
920 | ||
c553b3ca | 921 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) |
3df57bcf MN |
922 | cpu_relax(); |
923 | ||
924 | writeb(MB1H_ARM_APE_OPP, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); | |
925 | writeb(ARM_NO_CHANGE, (tcdm_base + PRCM_REQ_MB1_ARM_OPP)); | |
4d64d2e3 MN |
926 | writeb(((opp == APE_50_PARTLY_25_OPP) ? APE_50_OPP : opp), |
927 | (tcdm_base + PRCM_REQ_MB1_APE_OPP)); | |
3df57bcf | 928 | |
c553b3ca | 929 | writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
930 | wait_for_completion(&mb1_transfer.work); |
931 | ||
932 | if ((mb1_transfer.ack.header != MB1H_ARM_APE_OPP) || | |
933 | (mb1_transfer.ack.ape_opp != opp)) | |
934 | r = -EIO; | |
935 | ||
4d64d2e3 MN |
936 | skip_message: |
937 | if ((!r && (opp == APE_50_PARTLY_25_OPP)) || | |
938 | (r && (mb1_transfer.ape_opp == APE_50_PARTLY_25_OPP))) | |
939 | request_even_slower_clocks(true); | |
940 | if (!r) | |
941 | mb1_transfer.ape_opp = opp; | |
942 | ||
3df57bcf MN |
943 | mutex_unlock(&mb1_transfer.lock); |
944 | ||
945 | return r; | |
946 | } | |
947 | ||
948 | /** | |
0508901c | 949 | * db8500_prcmu_get_ape_opp - get the current APE OPP |
3df57bcf MN |
950 | * |
951 | * Returns: the current APE OPP | |
952 | */ | |
0508901c | 953 | int db8500_prcmu_get_ape_opp(void) |
3df57bcf MN |
954 | { |
955 | return readb(tcdm_base + PRCM_ACK_MB1_CURRENT_APE_OPP); | |
956 | } | |
957 | ||
958 | /** | |
686f871b | 959 | * db8500_prcmu_request_ape_opp_100_voltage - Request APE OPP 100% voltage |
3df57bcf MN |
960 | * @enable: true to request the higher voltage, false to drop a request. |
961 | * | |
962 | * Calls to this function to enable and disable requests must be balanced. | |
963 | */ | |
686f871b | 964 | int db8500_prcmu_request_ape_opp_100_voltage(bool enable) |
3df57bcf MN |
965 | { |
966 | int r = 0; | |
967 | u8 header; | |
968 | static unsigned int requests; | |
969 | ||
970 | mutex_lock(&mb1_transfer.lock); | |
971 | ||
972 | if (enable) { | |
973 | if (0 != requests++) | |
974 | goto unlock_and_return; | |
975 | header = MB1H_REQUEST_APE_OPP_100_VOLT; | |
976 | } else { | |
977 | if (requests == 0) { | |
978 | r = -EIO; | |
979 | goto unlock_and_return; | |
980 | } else if (1 != requests--) { | |
981 | goto unlock_and_return; | |
982 | } | |
983 | header = MB1H_RELEASE_APE_OPP_100_VOLT; | |
984 | } | |
985 | ||
c553b3ca | 986 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) |
3df57bcf MN |
987 | cpu_relax(); |
988 | ||
989 | writeb(header, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); | |
990 | ||
c553b3ca | 991 | writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
992 | wait_for_completion(&mb1_transfer.work); |
993 | ||
994 | if ((mb1_transfer.ack.header != header) || | |
995 | ((mb1_transfer.ack.ape_voltage_status & BIT(0)) != 0)) | |
996 | r = -EIO; | |
997 | ||
998 | unlock_and_return: | |
999 | mutex_unlock(&mb1_transfer.lock); | |
1000 | ||
1001 | return r; | |
1002 | } | |
1003 | ||
1004 | /** | |
1005 | * prcmu_release_usb_wakeup_state - release the state required by a USB wakeup | |
1006 | * | |
1007 | * This function releases the power state requirements of a USB wakeup. | |
1008 | */ | |
1009 | int prcmu_release_usb_wakeup_state(void) | |
1010 | { | |
1011 | int r = 0; | |
1012 | ||
1013 | mutex_lock(&mb1_transfer.lock); | |
1014 | ||
c553b3ca | 1015 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) |
3df57bcf MN |
1016 | cpu_relax(); |
1017 | ||
1018 | writeb(MB1H_RELEASE_USB_WAKEUP, | |
1019 | (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); | |
1020 | ||
c553b3ca | 1021 | writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
1022 | wait_for_completion(&mb1_transfer.work); |
1023 | ||
1024 | if ((mb1_transfer.ack.header != MB1H_RELEASE_USB_WAKEUP) || | |
1025 | ((mb1_transfer.ack.ape_voltage_status & BIT(0)) != 0)) | |
1026 | r = -EIO; | |
1027 | ||
1028 | mutex_unlock(&mb1_transfer.lock); | |
1029 | ||
1030 | return r; | |
1031 | } | |
1032 | ||
0837bb72 MN |
1033 | static int request_pll(u8 clock, bool enable) |
1034 | { | |
1035 | int r = 0; | |
1036 | ||
6b6fae2b MN |
1037 | if (clock == PRCMU_PLLSOC0) |
1038 | clock = (enable ? PLL_SOC0_ON : PLL_SOC0_OFF); | |
1039 | else if (clock == PRCMU_PLLSOC1) | |
0837bb72 MN |
1040 | clock = (enable ? PLL_SOC1_ON : PLL_SOC1_OFF); |
1041 | else | |
1042 | return -EINVAL; | |
1043 | ||
1044 | mutex_lock(&mb1_transfer.lock); | |
1045 | ||
1046 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) | |
1047 | cpu_relax(); | |
1048 | ||
1049 | writeb(MB1H_PLL_ON_OFF, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); | |
1050 | writeb(clock, (tcdm_base + PRCM_REQ_MB1_PLL_ON_OFF)); | |
1051 | ||
1052 | writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); | |
1053 | wait_for_completion(&mb1_transfer.work); | |
1054 | ||
1055 | if (mb1_transfer.ack.header != MB1H_PLL_ON_OFF) | |
1056 | r = -EIO; | |
1057 | ||
1058 | mutex_unlock(&mb1_transfer.lock); | |
1059 | ||
1060 | return r; | |
1061 | } | |
1062 | ||
3df57bcf | 1063 | /** |
73180f85 | 1064 | * db8500_prcmu_set_epod - set the state of a EPOD (power domain) |
3df57bcf MN |
1065 | * @epod_id: The EPOD to set |
1066 | * @epod_state: The new EPOD state | |
1067 | * | |
1068 | * This function sets the state of a EPOD (power domain). It may not be called | |
1069 | * from interrupt context. | |
1070 | */ | |
73180f85 | 1071 | int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state) |
3df57bcf MN |
1072 | { |
1073 | int r = 0; | |
1074 | bool ram_retention = false; | |
1075 | int i; | |
1076 | ||
1077 | /* check argument */ | |
1078 | BUG_ON(epod_id >= NUM_EPOD_ID); | |
1079 | ||
1080 | /* set flag if retention is possible */ | |
1081 | switch (epod_id) { | |
1082 | case EPOD_ID_SVAMMDSP: | |
1083 | case EPOD_ID_SIAMMDSP: | |
1084 | case EPOD_ID_ESRAM12: | |
1085 | case EPOD_ID_ESRAM34: | |
1086 | ram_retention = true; | |
1087 | break; | |
1088 | } | |
1089 | ||
1090 | /* check argument */ | |
1091 | BUG_ON(epod_state > EPOD_STATE_ON); | |
1092 | BUG_ON(epod_state == EPOD_STATE_RAMRET && !ram_retention); | |
1093 | ||
1094 | /* get lock */ | |
1095 | mutex_lock(&mb2_transfer.lock); | |
1096 | ||
1097 | /* wait for mailbox */ | |
c553b3ca | 1098 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(2)) |
3df57bcf MN |
1099 | cpu_relax(); |
1100 | ||
1101 | /* fill in mailbox */ | |
1102 | for (i = 0; i < NUM_EPOD_ID; i++) | |
1103 | writeb(EPOD_STATE_NO_CHANGE, (tcdm_base + PRCM_REQ_MB2 + i)); | |
1104 | writeb(epod_state, (tcdm_base + PRCM_REQ_MB2 + epod_id)); | |
1105 | ||
1106 | writeb(MB2H_DPS, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB2)); | |
1107 | ||
c553b3ca | 1108 | writel(MBOX_BIT(2), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
1109 | |
1110 | /* | |
1111 | * The current firmware version does not handle errors correctly, | |
1112 | * and we cannot recover if there is an error. | |
1113 | * This is expected to change when the firmware is updated. | |
1114 | */ | |
1115 | if (!wait_for_completion_timeout(&mb2_transfer.work, | |
1116 | msecs_to_jiffies(20000))) { | |
1117 | pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n", | |
1118 | __func__); | |
1119 | r = -EIO; | |
1120 | goto unlock_and_return; | |
1121 | } | |
1122 | ||
1123 | if (mb2_transfer.ack.status != HWACC_PWR_ST_OK) | |
1124 | r = -EIO; | |
1125 | ||
1126 | unlock_and_return: | |
1127 | mutex_unlock(&mb2_transfer.lock); | |
1128 | return r; | |
1129 | } | |
1130 | ||
1131 | /** | |
1132 | * prcmu_configure_auto_pm - Configure autonomous power management. | |
1133 | * @sleep: Configuration for ApSleep. | |
1134 | * @idle: Configuration for ApIdle. | |
1135 | */ | |
1136 | void prcmu_configure_auto_pm(struct prcmu_auto_pm_config *sleep, | |
1137 | struct prcmu_auto_pm_config *idle) | |
1138 | { | |
1139 | u32 sleep_cfg; | |
1140 | u32 idle_cfg; | |
1141 | unsigned long flags; | |
e3726fcf | 1142 | |
3df57bcf | 1143 | BUG_ON((sleep == NULL) || (idle == NULL)); |
650c2a21 | 1144 | |
3df57bcf MN |
1145 | sleep_cfg = (sleep->sva_auto_pm_enable & 0xF); |
1146 | sleep_cfg = ((sleep_cfg << 4) | (sleep->sia_auto_pm_enable & 0xF)); | |
1147 | sleep_cfg = ((sleep_cfg << 8) | (sleep->sva_power_on & 0xFF)); | |
1148 | sleep_cfg = ((sleep_cfg << 8) | (sleep->sia_power_on & 0xFF)); | |
1149 | sleep_cfg = ((sleep_cfg << 4) | (sleep->sva_policy & 0xF)); | |
1150 | sleep_cfg = ((sleep_cfg << 4) | (sleep->sia_policy & 0xF)); | |
e3726fcf | 1151 | |
3df57bcf MN |
1152 | idle_cfg = (idle->sva_auto_pm_enable & 0xF); |
1153 | idle_cfg = ((idle_cfg << 4) | (idle->sia_auto_pm_enable & 0xF)); | |
1154 | idle_cfg = ((idle_cfg << 8) | (idle->sva_power_on & 0xFF)); | |
1155 | idle_cfg = ((idle_cfg << 8) | (idle->sia_power_on & 0xFF)); | |
1156 | idle_cfg = ((idle_cfg << 4) | (idle->sva_policy & 0xF)); | |
1157 | idle_cfg = ((idle_cfg << 4) | (idle->sia_policy & 0xF)); | |
e3726fcf | 1158 | |
3df57bcf | 1159 | spin_lock_irqsave(&mb2_transfer.auto_pm_lock, flags); |
e0befb23 | 1160 | |
3df57bcf MN |
1161 | /* |
1162 | * The autonomous power management configuration is done through | |
1163 | * fields in mailbox 2, but these fields are only used as shared | |
1164 | * variables - i.e. there is no need to send a message. | |
1165 | */ | |
1166 | writel(sleep_cfg, (tcdm_base + PRCM_REQ_MB2_AUTO_PM_SLEEP)); | |
1167 | writel(idle_cfg, (tcdm_base + PRCM_REQ_MB2_AUTO_PM_IDLE)); | |
e0befb23 | 1168 | |
3df57bcf MN |
1169 | mb2_transfer.auto_pm_enabled = |
1170 | ((sleep->sva_auto_pm_enable == PRCMU_AUTO_PM_ON) || | |
1171 | (sleep->sia_auto_pm_enable == PRCMU_AUTO_PM_ON) || | |
1172 | (idle->sva_auto_pm_enable == PRCMU_AUTO_PM_ON) || | |
1173 | (idle->sia_auto_pm_enable == PRCMU_AUTO_PM_ON)); | |
e0befb23 | 1174 | |
3df57bcf MN |
1175 | spin_unlock_irqrestore(&mb2_transfer.auto_pm_lock, flags); |
1176 | } | |
1177 | EXPORT_SYMBOL(prcmu_configure_auto_pm); | |
e3726fcf | 1178 | |
3df57bcf MN |
1179 | bool prcmu_is_auto_pm_enabled(void) |
1180 | { | |
1181 | return mb2_transfer.auto_pm_enabled; | |
1182 | } | |
e0befb23 | 1183 | |
3df57bcf MN |
1184 | static int request_sysclk(bool enable) |
1185 | { | |
1186 | int r; | |
1187 | unsigned long flags; | |
e3726fcf | 1188 | |
3df57bcf | 1189 | r = 0; |
e3726fcf | 1190 | |
3df57bcf | 1191 | mutex_lock(&mb3_transfer.sysclk_lock); |
e0befb23 | 1192 | |
3df57bcf | 1193 | spin_lock_irqsave(&mb3_transfer.lock, flags); |
e0befb23 | 1194 | |
c553b3ca | 1195 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(3)) |
3df57bcf | 1196 | cpu_relax(); |
e0befb23 | 1197 | |
3df57bcf | 1198 | writeb((enable ? ON : OFF), (tcdm_base + PRCM_REQ_MB3_SYSCLK_MGT)); |
e3726fcf | 1199 | |
3df57bcf | 1200 | writeb(MB3H_SYSCLK, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB3)); |
c553b3ca | 1201 | writel(MBOX_BIT(3), PRCM_MBOX_CPU_SET); |
e3726fcf | 1202 | |
3df57bcf MN |
1203 | spin_unlock_irqrestore(&mb3_transfer.lock, flags); |
1204 | ||
1205 | /* | |
1206 | * The firmware only sends an ACK if we want to enable the | |
1207 | * SysClk, and it succeeds. | |
1208 | */ | |
1209 | if (enable && !wait_for_completion_timeout(&mb3_transfer.sysclk_work, | |
1210 | msecs_to_jiffies(20000))) { | |
1211 | pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n", | |
1212 | __func__); | |
1213 | r = -EIO; | |
1214 | } | |
1215 | ||
1216 | mutex_unlock(&mb3_transfer.sysclk_lock); | |
1217 | ||
1218 | return r; | |
1219 | } | |
1220 | ||
1221 | static int request_timclk(bool enable) | |
1222 | { | |
22fb3ad0 LW |
1223 | u32 val; |
1224 | ||
1225 | /* | |
1226 | * On the U8420_CLKSEL firmware, the ULP (Ultra Low Power) | |
1227 | * PLL is disabled so we cannot use doze mode, this will | |
1228 | * stop the clock on this firmware. | |
1229 | */ | |
1230 | if (prcmu_is_ulppll_disabled()) | |
1231 | val = 0; | |
1232 | else | |
1233 | val = (PRCM_TCR_DOZE_MODE | PRCM_TCR_TENSEL_MASK); | |
3df57bcf MN |
1234 | |
1235 | if (!enable) | |
22fb3ad0 LW |
1236 | val |= PRCM_TCR_STOP_TIMERS | |
1237 | PRCM_TCR_DOZE_MODE | | |
1238 | PRCM_TCR_TENSEL_MASK; | |
1239 | ||
c553b3ca | 1240 | writel(val, PRCM_TCR); |
3df57bcf MN |
1241 | |
1242 | return 0; | |
1243 | } | |
1244 | ||
6b6fae2b | 1245 | static int request_clock(u8 clock, bool enable) |
3df57bcf MN |
1246 | { |
1247 | u32 val; | |
1248 | unsigned long flags; | |
1249 | ||
1250 | spin_lock_irqsave(&clk_mgt_lock, flags); | |
1251 | ||
1252 | /* Grab the HW semaphore. */ | |
c553b3ca | 1253 | while ((readl(PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) |
3df57bcf MN |
1254 | cpu_relax(); |
1255 | ||
b047d981 | 1256 | val = readl(prcmu_base + clk_mgt[clock].offset); |
3df57bcf MN |
1257 | if (enable) { |
1258 | val |= (PRCM_CLK_MGT_CLKEN | clk_mgt[clock].pllsw); | |
1259 | } else { | |
1260 | clk_mgt[clock].pllsw = (val & PRCM_CLK_MGT_CLKPLLSW_MASK); | |
1261 | val &= ~(PRCM_CLK_MGT_CLKEN | PRCM_CLK_MGT_CLKPLLSW_MASK); | |
1262 | } | |
b047d981 | 1263 | writel(val, prcmu_base + clk_mgt[clock].offset); |
3df57bcf MN |
1264 | |
1265 | /* Release the HW semaphore. */ | |
c553b3ca | 1266 | writel(0, PRCM_SEM); |
3df57bcf MN |
1267 | |
1268 | spin_unlock_irqrestore(&clk_mgt_lock, flags); | |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | ||
0837bb72 MN |
1273 | static int request_sga_clock(u8 clock, bool enable) |
1274 | { | |
1275 | u32 val; | |
1276 | int ret; | |
1277 | ||
1278 | if (enable) { | |
1279 | val = readl(PRCM_CGATING_BYPASS); | |
1280 | writel(val | PRCM_CGATING_BYPASS_ICN2, PRCM_CGATING_BYPASS); | |
1281 | } | |
1282 | ||
6b6fae2b | 1283 | ret = request_clock(clock, enable); |
0837bb72 MN |
1284 | |
1285 | if (!ret && !enable) { | |
1286 | val = readl(PRCM_CGATING_BYPASS); | |
1287 | writel(val & ~PRCM_CGATING_BYPASS_ICN2, PRCM_CGATING_BYPASS); | |
1288 | } | |
1289 | ||
1290 | return ret; | |
1291 | } | |
1292 | ||
6b6fae2b MN |
1293 | static inline bool plldsi_locked(void) |
1294 | { | |
1295 | return (readl(PRCM_PLLDSI_LOCKP) & | |
1296 | (PRCM_PLLDSI_LOCKP_PRCM_PLLDSI_LOCKP10 | | |
1297 | PRCM_PLLDSI_LOCKP_PRCM_PLLDSI_LOCKP3)) == | |
1298 | (PRCM_PLLDSI_LOCKP_PRCM_PLLDSI_LOCKP10 | | |
1299 | PRCM_PLLDSI_LOCKP_PRCM_PLLDSI_LOCKP3); | |
1300 | } | |
1301 | ||
1302 | static int request_plldsi(bool enable) | |
1303 | { | |
1304 | int r = 0; | |
1305 | u32 val; | |
1306 | ||
1307 | writel((PRCM_MMIP_LS_CLAMP_DSIPLL_CLAMP | | |
1308 | PRCM_MMIP_LS_CLAMP_DSIPLL_CLAMPI), (enable ? | |
1309 | PRCM_MMIP_LS_CLAMP_CLR : PRCM_MMIP_LS_CLAMP_SET)); | |
1310 | ||
1311 | val = readl(PRCM_PLLDSI_ENABLE); | |
1312 | if (enable) | |
1313 | val |= PRCM_PLLDSI_ENABLE_PRCM_PLLDSI_ENABLE; | |
1314 | else | |
1315 | val &= ~PRCM_PLLDSI_ENABLE_PRCM_PLLDSI_ENABLE; | |
1316 | writel(val, PRCM_PLLDSI_ENABLE); | |
1317 | ||
1318 | if (enable) { | |
1319 | unsigned int i; | |
1320 | bool locked = plldsi_locked(); | |
1321 | ||
1322 | for (i = 10; !locked && (i > 0); --i) { | |
1323 | udelay(100); | |
1324 | locked = plldsi_locked(); | |
1325 | } | |
1326 | if (locked) { | |
1327 | writel(PRCM_APE_RESETN_DSIPLL_RESETN, | |
1328 | PRCM_APE_RESETN_SET); | |
1329 | } else { | |
1330 | writel((PRCM_MMIP_LS_CLAMP_DSIPLL_CLAMP | | |
1331 | PRCM_MMIP_LS_CLAMP_DSIPLL_CLAMPI), | |
1332 | PRCM_MMIP_LS_CLAMP_SET); | |
1333 | val &= ~PRCM_PLLDSI_ENABLE_PRCM_PLLDSI_ENABLE; | |
1334 | writel(val, PRCM_PLLDSI_ENABLE); | |
1335 | r = -EAGAIN; | |
1336 | } | |
1337 | } else { | |
1338 | writel(PRCM_APE_RESETN_DSIPLL_RESETN, PRCM_APE_RESETN_CLR); | |
1339 | } | |
1340 | return r; | |
1341 | } | |
1342 | ||
1343 | static int request_dsiclk(u8 n, bool enable) | |
1344 | { | |
1345 | u32 val; | |
1346 | ||
1347 | val = readl(PRCM_DSI_PLLOUT_SEL); | |
1348 | val &= ~dsiclk[n].divsel_mask; | |
1349 | val |= ((enable ? dsiclk[n].divsel : PRCM_DSI_PLLOUT_SEL_OFF) << | |
1350 | dsiclk[n].divsel_shift); | |
1351 | writel(val, PRCM_DSI_PLLOUT_SEL); | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | static int request_dsiescclk(u8 n, bool enable) | |
1356 | { | |
1357 | u32 val; | |
1358 | ||
1359 | val = readl(PRCM_DSITVCLK_DIV); | |
1360 | enable ? (val |= dsiescclk[n].en) : (val &= ~dsiescclk[n].en); | |
1361 | writel(val, PRCM_DSITVCLK_DIV); | |
1362 | return 0; | |
1363 | } | |
1364 | ||
3df57bcf | 1365 | /** |
73180f85 | 1366 | * db8500_prcmu_request_clock() - Request for a clock to be enabled or disabled. |
3df57bcf MN |
1367 | * @clock: The clock for which the request is made. |
1368 | * @enable: Whether the clock should be enabled (true) or disabled (false). | |
1369 | * | |
1370 | * This function should only be used by the clock implementation. | |
1371 | * Do not use it from any other place! | |
1372 | */ | |
73180f85 | 1373 | int db8500_prcmu_request_clock(u8 clock, bool enable) |
3df57bcf | 1374 | { |
6b6fae2b | 1375 | if (clock == PRCMU_SGACLK) |
0837bb72 | 1376 | return request_sga_clock(clock, enable); |
6b6fae2b MN |
1377 | else if (clock < PRCMU_NUM_REG_CLOCKS) |
1378 | return request_clock(clock, enable); | |
1379 | else if (clock == PRCMU_TIMCLK) | |
3df57bcf | 1380 | return request_timclk(enable); |
6b6fae2b MN |
1381 | else if ((clock == PRCMU_DSI0CLK) || (clock == PRCMU_DSI1CLK)) |
1382 | return request_dsiclk((clock - PRCMU_DSI0CLK), enable); | |
1383 | else if ((PRCMU_DSI0ESCCLK <= clock) && (clock <= PRCMU_DSI2ESCCLK)) | |
1384 | return request_dsiescclk((clock - PRCMU_DSI0ESCCLK), enable); | |
1385 | else if (clock == PRCMU_PLLDSI) | |
1386 | return request_plldsi(enable); | |
1387 | else if (clock == PRCMU_SYSCLK) | |
3df57bcf | 1388 | return request_sysclk(enable); |
6b6fae2b | 1389 | else if ((clock == PRCMU_PLLSOC0) || (clock == PRCMU_PLLSOC1)) |
0837bb72 | 1390 | return request_pll(clock, enable); |
6b6fae2b MN |
1391 | else |
1392 | return -EINVAL; | |
1393 | } | |
1394 | ||
1395 | static unsigned long pll_rate(void __iomem *reg, unsigned long src_rate, | |
1396 | int branch) | |
1397 | { | |
1398 | u64 rate; | |
1399 | u32 val; | |
1400 | u32 d; | |
1401 | u32 div = 1; | |
1402 | ||
1403 | val = readl(reg); | |
1404 | ||
1405 | rate = src_rate; | |
1406 | rate *= ((val & PRCM_PLL_FREQ_D_MASK) >> PRCM_PLL_FREQ_D_SHIFT); | |
1407 | ||
1408 | d = ((val & PRCM_PLL_FREQ_N_MASK) >> PRCM_PLL_FREQ_N_SHIFT); | |
1409 | if (d > 1) | |
1410 | div *= d; | |
1411 | ||
1412 | d = ((val & PRCM_PLL_FREQ_R_MASK) >> PRCM_PLL_FREQ_R_SHIFT); | |
1413 | if (d > 1) | |
1414 | div *= d; | |
1415 | ||
1416 | if (val & PRCM_PLL_FREQ_SELDIV2) | |
1417 | div *= 2; | |
1418 | ||
1419 | if ((branch == PLL_FIX) || ((branch == PLL_DIV) && | |
1420 | (val & PRCM_PLL_FREQ_DIV2EN) && | |
1421 | ((reg == PRCM_PLLSOC0_FREQ) || | |
20aee5b6 | 1422 | (reg == PRCM_PLLARM_FREQ) || |
6b6fae2b MN |
1423 | (reg == PRCM_PLLDDR_FREQ)))) |
1424 | div *= 2; | |
1425 | ||
1426 | (void)do_div(rate, div); | |
1427 | ||
1428 | return (unsigned long)rate; | |
1429 | } | |
1430 | ||
1431 | #define ROOT_CLOCK_RATE 38400000 | |
1432 | ||
1433 | static unsigned long clock_rate(u8 clock) | |
1434 | { | |
1435 | u32 val; | |
1436 | u32 pllsw; | |
1437 | unsigned long rate = ROOT_CLOCK_RATE; | |
1438 | ||
b047d981 | 1439 | val = readl(prcmu_base + clk_mgt[clock].offset); |
6b6fae2b MN |
1440 | |
1441 | if (val & PRCM_CLK_MGT_CLK38) { | |
1442 | if (clk_mgt[clock].clk38div && (val & PRCM_CLK_MGT_CLK38DIV)) | |
1443 | rate /= 2; | |
1444 | return rate; | |
1445 | } | |
1446 | ||
1447 | val |= clk_mgt[clock].pllsw; | |
1448 | pllsw = (val & PRCM_CLK_MGT_CLKPLLSW_MASK); | |
1449 | ||
1450 | if (pllsw == PRCM_CLK_MGT_CLKPLLSW_SOC0) | |
1451 | rate = pll_rate(PRCM_PLLSOC0_FREQ, rate, clk_mgt[clock].branch); | |
1452 | else if (pllsw == PRCM_CLK_MGT_CLKPLLSW_SOC1) | |
1453 | rate = pll_rate(PRCM_PLLSOC1_FREQ, rate, clk_mgt[clock].branch); | |
1454 | else if (pllsw == PRCM_CLK_MGT_CLKPLLSW_DDR) | |
1455 | rate = pll_rate(PRCM_PLLDDR_FREQ, rate, clk_mgt[clock].branch); | |
1456 | else | |
1457 | return 0; | |
1458 | ||
1459 | if ((clock == PRCMU_SGACLK) && | |
1460 | (val & PRCM_SGACLK_MGT_SGACLKDIV_BY_2_5_EN)) { | |
1461 | u64 r = (rate * 10); | |
1462 | ||
1463 | (void)do_div(r, 25); | |
1464 | return (unsigned long)r; | |
1465 | } | |
1466 | val &= PRCM_CLK_MGT_CLKPLLDIV_MASK; | |
1467 | if (val) | |
1468 | return rate / val; | |
1469 | else | |
1470 | return 0; | |
1471 | } | |
20aee5b6 | 1472 | |
b2302c87 | 1473 | static unsigned long armss_rate(void) |
20aee5b6 MJ |
1474 | { |
1475 | u32 r; | |
1476 | unsigned long rate; | |
1477 | ||
1478 | r = readl(PRCM_ARM_CHGCLKREQ); | |
1479 | ||
1480 | if (r & PRCM_ARM_CHGCLKREQ_PRCM_ARM_CHGCLKREQ) { | |
1481 | /* External ARMCLKFIX clock */ | |
1482 | ||
1483 | rate = pll_rate(PRCM_PLLDDR_FREQ, ROOT_CLOCK_RATE, PLL_FIX); | |
1484 | ||
1485 | /* Check PRCM_ARM_CHGCLKREQ divider */ | |
1486 | if (!(r & PRCM_ARM_CHGCLKREQ_PRCM_ARM_DIVSEL)) | |
1487 | rate /= 2; | |
1488 | ||
1489 | /* Check PRCM_ARMCLKFIX_MGT divider */ | |
1490 | r = readl(PRCM_ARMCLKFIX_MGT); | |
1491 | r &= PRCM_CLK_MGT_CLKPLLDIV_MASK; | |
1492 | rate /= r; | |
1493 | ||
1494 | } else {/* ARM PLL */ | |
1495 | rate = pll_rate(PRCM_PLLARM_FREQ, ROOT_CLOCK_RATE, PLL_DIV); | |
1496 | } | |
1497 | ||
b2302c87 | 1498 | return rate; |
20aee5b6 | 1499 | } |
6b6fae2b MN |
1500 | |
1501 | static unsigned long dsiclk_rate(u8 n) | |
1502 | { | |
1503 | u32 divsel; | |
1504 | u32 div = 1; | |
1505 | ||
1506 | divsel = readl(PRCM_DSI_PLLOUT_SEL); | |
1507 | divsel = ((divsel & dsiclk[n].divsel_mask) >> dsiclk[n].divsel_shift); | |
1508 | ||
1509 | if (divsel == PRCM_DSI_PLLOUT_SEL_OFF) | |
1510 | divsel = dsiclk[n].divsel; | |
e9d7b4b5 UH |
1511 | else |
1512 | dsiclk[n].divsel = divsel; | |
6b6fae2b MN |
1513 | |
1514 | switch (divsel) { | |
1515 | case PRCM_DSI_PLLOUT_SEL_PHI_4: | |
1516 | div *= 2; | |
df561f66 | 1517 | fallthrough; |
6b6fae2b MN |
1518 | case PRCM_DSI_PLLOUT_SEL_PHI_2: |
1519 | div *= 2; | |
df561f66 | 1520 | fallthrough; |
6b6fae2b MN |
1521 | case PRCM_DSI_PLLOUT_SEL_PHI: |
1522 | return pll_rate(PRCM_PLLDSI_FREQ, clock_rate(PRCMU_HDMICLK), | |
1523 | PLL_RAW) / div; | |
e62ccf3a | 1524 | default: |
6b6fae2b | 1525 | return 0; |
e62ccf3a | 1526 | } |
6b6fae2b MN |
1527 | } |
1528 | ||
1529 | static unsigned long dsiescclk_rate(u8 n) | |
1530 | { | |
1531 | u32 div; | |
1532 | ||
1533 | div = readl(PRCM_DSITVCLK_DIV); | |
1534 | div = ((div & dsiescclk[n].div_mask) >> (dsiescclk[n].div_shift)); | |
1535 | return clock_rate(PRCMU_TVCLK) / max((u32)1, div); | |
1536 | } | |
1537 | ||
1538 | unsigned long prcmu_clock_rate(u8 clock) | |
1539 | { | |
e62ccf3a | 1540 | if (clock < PRCMU_NUM_REG_CLOCKS) |
6b6fae2b MN |
1541 | return clock_rate(clock); |
1542 | else if (clock == PRCMU_TIMCLK) | |
22fb3ad0 LW |
1543 | return prcmu_is_ulppll_disabled() ? |
1544 | 32768 : ROOT_CLOCK_RATE / 16; | |
6b6fae2b MN |
1545 | else if (clock == PRCMU_SYSCLK) |
1546 | return ROOT_CLOCK_RATE; | |
1547 | else if (clock == PRCMU_PLLSOC0) | |
1548 | return pll_rate(PRCM_PLLSOC0_FREQ, ROOT_CLOCK_RATE, PLL_RAW); | |
1549 | else if (clock == PRCMU_PLLSOC1) | |
1550 | return pll_rate(PRCM_PLLSOC1_FREQ, ROOT_CLOCK_RATE, PLL_RAW); | |
20aee5b6 MJ |
1551 | else if (clock == PRCMU_ARMSS) |
1552 | return armss_rate(); | |
6b6fae2b MN |
1553 | else if (clock == PRCMU_PLLDDR) |
1554 | return pll_rate(PRCM_PLLDDR_FREQ, ROOT_CLOCK_RATE, PLL_RAW); | |
1555 | else if (clock == PRCMU_PLLDSI) | |
1556 | return pll_rate(PRCM_PLLDSI_FREQ, clock_rate(PRCMU_HDMICLK), | |
1557 | PLL_RAW); | |
1558 | else if ((clock == PRCMU_DSI0CLK) || (clock == PRCMU_DSI1CLK)) | |
1559 | return dsiclk_rate(clock - PRCMU_DSI0CLK); | |
1560 | else if ((PRCMU_DSI0ESCCLK <= clock) && (clock <= PRCMU_DSI2ESCCLK)) | |
1561 | return dsiescclk_rate(clock - PRCMU_DSI0ESCCLK); | |
1562 | else | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | static unsigned long clock_source_rate(u32 clk_mgt_val, int branch) | |
1567 | { | |
1568 | if (clk_mgt_val & PRCM_CLK_MGT_CLK38) | |
1569 | return ROOT_CLOCK_RATE; | |
1570 | clk_mgt_val &= PRCM_CLK_MGT_CLKPLLSW_MASK; | |
1571 | if (clk_mgt_val == PRCM_CLK_MGT_CLKPLLSW_SOC0) | |
1572 | return pll_rate(PRCM_PLLSOC0_FREQ, ROOT_CLOCK_RATE, branch); | |
1573 | else if (clk_mgt_val == PRCM_CLK_MGT_CLKPLLSW_SOC1) | |
1574 | return pll_rate(PRCM_PLLSOC1_FREQ, ROOT_CLOCK_RATE, branch); | |
1575 | else if (clk_mgt_val == PRCM_CLK_MGT_CLKPLLSW_DDR) | |
1576 | return pll_rate(PRCM_PLLDDR_FREQ, ROOT_CLOCK_RATE, branch); | |
1577 | else | |
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | static u32 clock_divider(unsigned long src_rate, unsigned long rate) | |
1582 | { | |
1583 | u32 div; | |
1584 | ||
1585 | div = (src_rate / rate); | |
1586 | if (div == 0) | |
1587 | return 1; | |
1588 | if (rate < (src_rate / div)) | |
1589 | div++; | |
1590 | return div; | |
1591 | } | |
1592 | ||
1593 | static long round_clock_rate(u8 clock, unsigned long rate) | |
1594 | { | |
1595 | u32 val; | |
1596 | u32 div; | |
1597 | unsigned long src_rate; | |
1598 | long rounded_rate; | |
1599 | ||
b047d981 | 1600 | val = readl(prcmu_base + clk_mgt[clock].offset); |
6b6fae2b MN |
1601 | src_rate = clock_source_rate((val | clk_mgt[clock].pllsw), |
1602 | clk_mgt[clock].branch); | |
1603 | div = clock_divider(src_rate, rate); | |
1604 | if (val & PRCM_CLK_MGT_CLK38) { | |
1605 | if (clk_mgt[clock].clk38div) { | |
1606 | if (div > 2) | |
1607 | div = 2; | |
1608 | } else { | |
1609 | div = 1; | |
1610 | } | |
1611 | } else if ((clock == PRCMU_SGACLK) && (div == 3)) { | |
1612 | u64 r = (src_rate * 10); | |
1613 | ||
1614 | (void)do_div(r, 25); | |
1615 | if (r <= rate) | |
1616 | return (unsigned long)r; | |
1617 | } | |
1618 | rounded_rate = (src_rate / min(div, (u32)31)); | |
1619 | ||
1620 | return rounded_rate; | |
1621 | } | |
1622 | ||
fea3ac55 | 1623 | static const unsigned long db8500_armss_freqs[] = { |
ec343111 LW |
1624 | 199680000, |
1625 | 399360000, | |
1626 | 798720000, | |
836a1e25 | 1627 | 998400000 |
b2302c87 UH |
1628 | }; |
1629 | ||
fea3ac55 LW |
1630 | /* The DB8520 has slightly higher ARMSS max frequency */ |
1631 | static const unsigned long db8520_armss_freqs[] = { | |
ec343111 LW |
1632 | 199680000, |
1633 | 399360000, | |
1634 | 798720000, | |
fea3ac55 LW |
1635 | 1152000000 |
1636 | }; | |
1637 | ||
b2302c87 UH |
1638 | static long round_armss_rate(unsigned long rate) |
1639 | { | |
836a1e25 | 1640 | unsigned long freq = 0; |
fea3ac55 LW |
1641 | const unsigned long *freqs; |
1642 | int nfreqs; | |
836a1e25 | 1643 | int i; |
b2302c87 | 1644 | |
fea3ac55 LW |
1645 | if (fw_info.version.project == PRCMU_FW_PROJECT_U8520) { |
1646 | freqs = db8520_armss_freqs; | |
1647 | nfreqs = ARRAY_SIZE(db8520_armss_freqs); | |
1648 | } else { | |
1649 | freqs = db8500_armss_freqs; | |
1650 | nfreqs = ARRAY_SIZE(db8500_armss_freqs); | |
1651 | } | |
1652 | ||
b2302c87 | 1653 | /* Find the corresponding arm opp from the cpufreq table. */ |
fea3ac55 LW |
1654 | for (i = 0; i < nfreqs; i++) { |
1655 | freq = freqs[i]; | |
836a1e25 | 1656 | if (rate <= freq) |
b2302c87 | 1657 | break; |
b2302c87 UH |
1658 | } |
1659 | ||
1660 | /* Return the last valid value, even if a match was not found. */ | |
836a1e25 | 1661 | return freq; |
b2302c87 UH |
1662 | } |
1663 | ||
6b6fae2b MN |
1664 | #define MIN_PLL_VCO_RATE 600000000ULL |
1665 | #define MAX_PLL_VCO_RATE 1680640000ULL | |
1666 | ||
1667 | static long round_plldsi_rate(unsigned long rate) | |
1668 | { | |
1669 | long rounded_rate = 0; | |
1670 | unsigned long src_rate; | |
1671 | unsigned long rem; | |
1672 | u32 r; | |
1673 | ||
1674 | src_rate = clock_rate(PRCMU_HDMICLK); | |
1675 | rem = rate; | |
1676 | ||
1677 | for (r = 7; (rem > 0) && (r > 0); r--) { | |
1678 | u64 d; | |
1679 | ||
1680 | d = (r * rate); | |
1681 | (void)do_div(d, src_rate); | |
1682 | if (d < 6) | |
1683 | d = 6; | |
1684 | else if (d > 255) | |
1685 | d = 255; | |
1686 | d *= src_rate; | |
1687 | if (((2 * d) < (r * MIN_PLL_VCO_RATE)) || | |
1688 | ((r * MAX_PLL_VCO_RATE) < (2 * d))) | |
1689 | continue; | |
1690 | (void)do_div(d, r); | |
1691 | if (rate < d) { | |
1692 | if (rounded_rate == 0) | |
1693 | rounded_rate = (long)d; | |
1694 | break; | |
1695 | } | |
1696 | if ((rate - d) < rem) { | |
1697 | rem = (rate - d); | |
1698 | rounded_rate = (long)d; | |
1699 | } | |
1700 | } | |
1701 | return rounded_rate; | |
1702 | } | |
1703 | ||
1704 | static long round_dsiclk_rate(unsigned long rate) | |
1705 | { | |
1706 | u32 div; | |
1707 | unsigned long src_rate; | |
1708 | long rounded_rate; | |
1709 | ||
1710 | src_rate = pll_rate(PRCM_PLLDSI_FREQ, clock_rate(PRCMU_HDMICLK), | |
1711 | PLL_RAW); | |
1712 | div = clock_divider(src_rate, rate); | |
1713 | rounded_rate = (src_rate / ((div > 2) ? 4 : div)); | |
1714 | ||
1715 | return rounded_rate; | |
1716 | } | |
1717 | ||
1718 | static long round_dsiescclk_rate(unsigned long rate) | |
1719 | { | |
1720 | u32 div; | |
1721 | unsigned long src_rate; | |
1722 | long rounded_rate; | |
1723 | ||
1724 | src_rate = clock_rate(PRCMU_TVCLK); | |
1725 | div = clock_divider(src_rate, rate); | |
1726 | rounded_rate = (src_rate / min(div, (u32)255)); | |
1727 | ||
1728 | return rounded_rate; | |
1729 | } | |
1730 | ||
1731 | long prcmu_round_clock_rate(u8 clock, unsigned long rate) | |
1732 | { | |
1733 | if (clock < PRCMU_NUM_REG_CLOCKS) | |
1734 | return round_clock_rate(clock, rate); | |
b2302c87 UH |
1735 | else if (clock == PRCMU_ARMSS) |
1736 | return round_armss_rate(rate); | |
6b6fae2b MN |
1737 | else if (clock == PRCMU_PLLDSI) |
1738 | return round_plldsi_rate(rate); | |
1739 | else if ((clock == PRCMU_DSI0CLK) || (clock == PRCMU_DSI1CLK)) | |
1740 | return round_dsiclk_rate(rate); | |
1741 | else if ((PRCMU_DSI0ESCCLK <= clock) && (clock <= PRCMU_DSI2ESCCLK)) | |
1742 | return round_dsiescclk_rate(rate); | |
1743 | else | |
1744 | return (long)prcmu_clock_rate(clock); | |
1745 | } | |
1746 | ||
1747 | static void set_clock_rate(u8 clock, unsigned long rate) | |
1748 | { | |
1749 | u32 val; | |
1750 | u32 div; | |
1751 | unsigned long src_rate; | |
1752 | unsigned long flags; | |
1753 | ||
1754 | spin_lock_irqsave(&clk_mgt_lock, flags); | |
1755 | ||
1756 | /* Grab the HW semaphore. */ | |
1757 | while ((readl(PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) | |
1758 | cpu_relax(); | |
1759 | ||
b047d981 | 1760 | val = readl(prcmu_base + clk_mgt[clock].offset); |
6b6fae2b MN |
1761 | src_rate = clock_source_rate((val | clk_mgt[clock].pllsw), |
1762 | clk_mgt[clock].branch); | |
1763 | div = clock_divider(src_rate, rate); | |
1764 | if (val & PRCM_CLK_MGT_CLK38) { | |
1765 | if (clk_mgt[clock].clk38div) { | |
1766 | if (div > 1) | |
1767 | val |= PRCM_CLK_MGT_CLK38DIV; | |
1768 | else | |
1769 | val &= ~PRCM_CLK_MGT_CLK38DIV; | |
1770 | } | |
1771 | } else if (clock == PRCMU_SGACLK) { | |
1772 | val &= ~(PRCM_CLK_MGT_CLKPLLDIV_MASK | | |
1773 | PRCM_SGACLK_MGT_SGACLKDIV_BY_2_5_EN); | |
1774 | if (div == 3) { | |
1775 | u64 r = (src_rate * 10); | |
1776 | ||
1777 | (void)do_div(r, 25); | |
1778 | if (r <= rate) { | |
1779 | val |= PRCM_SGACLK_MGT_SGACLKDIV_BY_2_5_EN; | |
1780 | div = 0; | |
1781 | } | |
1782 | } | |
1783 | val |= min(div, (u32)31); | |
1784 | } else { | |
1785 | val &= ~PRCM_CLK_MGT_CLKPLLDIV_MASK; | |
1786 | val |= min(div, (u32)31); | |
1787 | } | |
b047d981 | 1788 | writel(val, prcmu_base + clk_mgt[clock].offset); |
6b6fae2b MN |
1789 | |
1790 | /* Release the HW semaphore. */ | |
1791 | writel(0, PRCM_SEM); | |
1792 | ||
1793 | spin_unlock_irqrestore(&clk_mgt_lock, flags); | |
1794 | } | |
1795 | ||
b2302c87 UH |
1796 | static int set_armss_rate(unsigned long rate) |
1797 | { | |
836a1e25 LW |
1798 | unsigned long freq; |
1799 | u8 opps[] = { ARM_EXTCLK, ARM_50_OPP, ARM_100_OPP, ARM_MAX_OPP }; | |
fea3ac55 LW |
1800 | const unsigned long *freqs; |
1801 | int nfreqs; | |
836a1e25 | 1802 | int i; |
b2302c87 | 1803 | |
fea3ac55 LW |
1804 | if (fw_info.version.project == PRCMU_FW_PROJECT_U8520) { |
1805 | freqs = db8520_armss_freqs; | |
1806 | nfreqs = ARRAY_SIZE(db8520_armss_freqs); | |
1807 | } else { | |
1808 | freqs = db8500_armss_freqs; | |
1809 | nfreqs = ARRAY_SIZE(db8500_armss_freqs); | |
1810 | } | |
1811 | ||
b2302c87 | 1812 | /* Find the corresponding arm opp from the cpufreq table. */ |
fea3ac55 LW |
1813 | for (i = 0; i < nfreqs; i++) { |
1814 | freq = freqs[i]; | |
836a1e25 | 1815 | if (rate == freq) |
b2302c87 | 1816 | break; |
836a1e25 | 1817 | } |
b2302c87 | 1818 | |
836a1e25 | 1819 | if (rate != freq) |
b2302c87 UH |
1820 | return -EINVAL; |
1821 | ||
1822 | /* Set the new arm opp. */ | |
836a1e25 LW |
1823 | pr_debug("SET ARM OPP 0x%02x\n", opps[i]); |
1824 | return db8500_prcmu_set_arm_opp(opps[i]); | |
b2302c87 UH |
1825 | } |
1826 | ||
6b6fae2b MN |
1827 | static int set_plldsi_rate(unsigned long rate) |
1828 | { | |
1829 | unsigned long src_rate; | |
1830 | unsigned long rem; | |
1831 | u32 pll_freq = 0; | |
1832 | u32 r; | |
1833 | ||
1834 | src_rate = clock_rate(PRCMU_HDMICLK); | |
1835 | rem = rate; | |
1836 | ||
1837 | for (r = 7; (rem > 0) && (r > 0); r--) { | |
1838 | u64 d; | |
1839 | u64 hwrate; | |
1840 | ||
1841 | d = (r * rate); | |
1842 | (void)do_div(d, src_rate); | |
1843 | if (d < 6) | |
1844 | d = 6; | |
1845 | else if (d > 255) | |
1846 | d = 255; | |
1847 | hwrate = (d * src_rate); | |
1848 | if (((2 * hwrate) < (r * MIN_PLL_VCO_RATE)) || | |
1849 | ((r * MAX_PLL_VCO_RATE) < (2 * hwrate))) | |
1850 | continue; | |
1851 | (void)do_div(hwrate, r); | |
1852 | if (rate < hwrate) { | |
1853 | if (pll_freq == 0) | |
1854 | pll_freq = (((u32)d << PRCM_PLL_FREQ_D_SHIFT) | | |
1855 | (r << PRCM_PLL_FREQ_R_SHIFT)); | |
1856 | break; | |
1857 | } | |
1858 | if ((rate - hwrate) < rem) { | |
1859 | rem = (rate - hwrate); | |
1860 | pll_freq = (((u32)d << PRCM_PLL_FREQ_D_SHIFT) | | |
1861 | (r << PRCM_PLL_FREQ_R_SHIFT)); | |
1862 | } | |
1863 | } | |
1864 | if (pll_freq == 0) | |
1865 | return -EINVAL; | |
1866 | ||
1867 | pll_freq |= (1 << PRCM_PLL_FREQ_N_SHIFT); | |
1868 | writel(pll_freq, PRCM_PLLDSI_FREQ); | |
1869 | ||
1870 | return 0; | |
1871 | } | |
1872 | ||
1873 | static void set_dsiclk_rate(u8 n, unsigned long rate) | |
1874 | { | |
1875 | u32 val; | |
1876 | u32 div; | |
1877 | ||
1878 | div = clock_divider(pll_rate(PRCM_PLLDSI_FREQ, | |
1879 | clock_rate(PRCMU_HDMICLK), PLL_RAW), rate); | |
1880 | ||
1881 | dsiclk[n].divsel = (div == 1) ? PRCM_DSI_PLLOUT_SEL_PHI : | |
1882 | (div == 2) ? PRCM_DSI_PLLOUT_SEL_PHI_2 : | |
1883 | /* else */ PRCM_DSI_PLLOUT_SEL_PHI_4; | |
1884 | ||
1885 | val = readl(PRCM_DSI_PLLOUT_SEL); | |
1886 | val &= ~dsiclk[n].divsel_mask; | |
1887 | val |= (dsiclk[n].divsel << dsiclk[n].divsel_shift); | |
1888 | writel(val, PRCM_DSI_PLLOUT_SEL); | |
1889 | } | |
1890 | ||
1891 | static void set_dsiescclk_rate(u8 n, unsigned long rate) | |
1892 | { | |
1893 | u32 val; | |
1894 | u32 div; | |
1895 | ||
1896 | div = clock_divider(clock_rate(PRCMU_TVCLK), rate); | |
1897 | val = readl(PRCM_DSITVCLK_DIV); | |
1898 | val &= ~dsiescclk[n].div_mask; | |
1899 | val |= (min(div, (u32)255) << dsiescclk[n].div_shift); | |
1900 | writel(val, PRCM_DSITVCLK_DIV); | |
1901 | } | |
1902 | ||
1903 | int prcmu_set_clock_rate(u8 clock, unsigned long rate) | |
1904 | { | |
1905 | if (clock < PRCMU_NUM_REG_CLOCKS) | |
1906 | set_clock_rate(clock, rate); | |
b2302c87 UH |
1907 | else if (clock == PRCMU_ARMSS) |
1908 | return set_armss_rate(rate); | |
6b6fae2b MN |
1909 | else if (clock == PRCMU_PLLDSI) |
1910 | return set_plldsi_rate(rate); | |
1911 | else if ((clock == PRCMU_DSI0CLK) || (clock == PRCMU_DSI1CLK)) | |
1912 | set_dsiclk_rate((clock - PRCMU_DSI0CLK), rate); | |
1913 | else if ((PRCMU_DSI0ESCCLK <= clock) && (clock <= PRCMU_DSI2ESCCLK)) | |
1914 | set_dsiescclk_rate((clock - PRCMU_DSI0ESCCLK), rate); | |
1915 | return 0; | |
3df57bcf MN |
1916 | } |
1917 | ||
73180f85 | 1918 | int db8500_prcmu_config_esram0_deep_sleep(u8 state) |
3df57bcf MN |
1919 | { |
1920 | if ((state > ESRAM0_DEEP_SLEEP_STATE_RET) || | |
1921 | (state < ESRAM0_DEEP_SLEEP_STATE_OFF)) | |
1922 | return -EINVAL; | |
1923 | ||
1924 | mutex_lock(&mb4_transfer.lock); | |
1925 | ||
c553b3ca | 1926 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) |
3df57bcf MN |
1927 | cpu_relax(); |
1928 | ||
1929 | writeb(MB4H_MEM_ST, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); | |
1930 | writeb(((DDR_PWR_STATE_OFFHIGHLAT << 4) | DDR_PWR_STATE_ON), | |
1931 | (tcdm_base + PRCM_REQ_MB4_DDR_ST_AP_SLEEP_IDLE)); | |
1932 | writeb(DDR_PWR_STATE_ON, | |
1933 | (tcdm_base + PRCM_REQ_MB4_DDR_ST_AP_DEEP_IDLE)); | |
1934 | writeb(state, (tcdm_base + PRCM_REQ_MB4_ESRAM0_ST)); | |
1935 | ||
c553b3ca | 1936 | writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
1937 | wait_for_completion(&mb4_transfer.work); |
1938 | ||
1939 | mutex_unlock(&mb4_transfer.lock); | |
1940 | ||
1941 | return 0; | |
1942 | } | |
1943 | ||
0508901c | 1944 | int db8500_prcmu_config_hotdog(u8 threshold) |
3df57bcf MN |
1945 | { |
1946 | mutex_lock(&mb4_transfer.lock); | |
1947 | ||
c553b3ca | 1948 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) |
3df57bcf MN |
1949 | cpu_relax(); |
1950 | ||
1951 | writeb(threshold, (tcdm_base + PRCM_REQ_MB4_HOTDOG_THRESHOLD)); | |
1952 | writeb(MB4H_HOTDOG, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); | |
1953 | ||
c553b3ca | 1954 | writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
1955 | wait_for_completion(&mb4_transfer.work); |
1956 | ||
1957 | mutex_unlock(&mb4_transfer.lock); | |
1958 | ||
1959 | return 0; | |
1960 | } | |
1961 | ||
0508901c | 1962 | int db8500_prcmu_config_hotmon(u8 low, u8 high) |
3df57bcf MN |
1963 | { |
1964 | mutex_lock(&mb4_transfer.lock); | |
1965 | ||
c553b3ca | 1966 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) |
3df57bcf MN |
1967 | cpu_relax(); |
1968 | ||
1969 | writeb(low, (tcdm_base + PRCM_REQ_MB4_HOTMON_LOW)); | |
1970 | writeb(high, (tcdm_base + PRCM_REQ_MB4_HOTMON_HIGH)); | |
1971 | writeb((HOTMON_CONFIG_LOW | HOTMON_CONFIG_HIGH), | |
1972 | (tcdm_base + PRCM_REQ_MB4_HOTMON_CONFIG)); | |
1973 | writeb(MB4H_HOTMON, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); | |
1974 | ||
c553b3ca | 1975 | writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
1976 | wait_for_completion(&mb4_transfer.work); |
1977 | ||
1978 | mutex_unlock(&mb4_transfer.lock); | |
1979 | ||
1980 | return 0; | |
1981 | } | |
26716ce1 | 1982 | EXPORT_SYMBOL_GPL(db8500_prcmu_config_hotmon); |
3df57bcf MN |
1983 | |
1984 | static int config_hot_period(u16 val) | |
1985 | { | |
1986 | mutex_lock(&mb4_transfer.lock); | |
1987 | ||
c553b3ca | 1988 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) |
3df57bcf MN |
1989 | cpu_relax(); |
1990 | ||
1991 | writew(val, (tcdm_base + PRCM_REQ_MB4_HOT_PERIOD)); | |
1992 | writeb(MB4H_HOT_PERIOD, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); | |
1993 | ||
c553b3ca | 1994 | writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
1995 | wait_for_completion(&mb4_transfer.work); |
1996 | ||
1997 | mutex_unlock(&mb4_transfer.lock); | |
1998 | ||
1999 | return 0; | |
2000 | } | |
2001 | ||
0508901c | 2002 | int db8500_prcmu_start_temp_sense(u16 cycles32k) |
3df57bcf MN |
2003 | { |
2004 | if (cycles32k == 0xFFFF) | |
2005 | return -EINVAL; | |
2006 | ||
2007 | return config_hot_period(cycles32k); | |
2008 | } | |
26716ce1 | 2009 | EXPORT_SYMBOL_GPL(db8500_prcmu_start_temp_sense); |
3df57bcf | 2010 | |
0508901c | 2011 | int db8500_prcmu_stop_temp_sense(void) |
3df57bcf MN |
2012 | { |
2013 | return config_hot_period(0xFFFF); | |
2014 | } | |
26716ce1 | 2015 | EXPORT_SYMBOL_GPL(db8500_prcmu_stop_temp_sense); |
3df57bcf | 2016 | |
84165b80 JA |
2017 | static int prcmu_a9wdog(u8 cmd, u8 d0, u8 d1, u8 d2, u8 d3) |
2018 | { | |
2019 | ||
2020 | mutex_lock(&mb4_transfer.lock); | |
2021 | ||
2022 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) | |
2023 | cpu_relax(); | |
2024 | ||
2025 | writeb(d0, (tcdm_base + PRCM_REQ_MB4_A9WDOG_0)); | |
2026 | writeb(d1, (tcdm_base + PRCM_REQ_MB4_A9WDOG_1)); | |
2027 | writeb(d2, (tcdm_base + PRCM_REQ_MB4_A9WDOG_2)); | |
2028 | writeb(d3, (tcdm_base + PRCM_REQ_MB4_A9WDOG_3)); | |
2029 | ||
2030 | writeb(cmd, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); | |
2031 | ||
2032 | writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); | |
2033 | wait_for_completion(&mb4_transfer.work); | |
2034 | ||
2035 | mutex_unlock(&mb4_transfer.lock); | |
2036 | ||
2037 | return 0; | |
2038 | ||
2039 | } | |
2040 | ||
0508901c | 2041 | int db8500_prcmu_config_a9wdog(u8 num, bool sleep_auto_off) |
84165b80 JA |
2042 | { |
2043 | BUG_ON(num == 0 || num > 0xf); | |
2044 | return prcmu_a9wdog(MB4H_A9WDOG_CONF, num, 0, 0, | |
2045 | sleep_auto_off ? A9WDOG_AUTO_OFF_EN : | |
2046 | A9WDOG_AUTO_OFF_DIS); | |
2047 | } | |
6f8cfa99 | 2048 | EXPORT_SYMBOL(db8500_prcmu_config_a9wdog); |
84165b80 | 2049 | |
0508901c | 2050 | int db8500_prcmu_enable_a9wdog(u8 id) |
84165b80 JA |
2051 | { |
2052 | return prcmu_a9wdog(MB4H_A9WDOG_EN, id, 0, 0, 0); | |
2053 | } | |
6f8cfa99 | 2054 | EXPORT_SYMBOL(db8500_prcmu_enable_a9wdog); |
84165b80 | 2055 | |
0508901c | 2056 | int db8500_prcmu_disable_a9wdog(u8 id) |
84165b80 JA |
2057 | { |
2058 | return prcmu_a9wdog(MB4H_A9WDOG_DIS, id, 0, 0, 0); | |
2059 | } | |
6f8cfa99 | 2060 | EXPORT_SYMBOL(db8500_prcmu_disable_a9wdog); |
84165b80 | 2061 | |
0508901c | 2062 | int db8500_prcmu_kick_a9wdog(u8 id) |
84165b80 JA |
2063 | { |
2064 | return prcmu_a9wdog(MB4H_A9WDOG_KICK, id, 0, 0, 0); | |
2065 | } | |
6f8cfa99 | 2066 | EXPORT_SYMBOL(db8500_prcmu_kick_a9wdog); |
84165b80 JA |
2067 | |
2068 | /* | |
2069 | * timeout is 28 bit, in ms. | |
2070 | */ | |
0508901c | 2071 | int db8500_prcmu_load_a9wdog(u8 id, u32 timeout) |
84165b80 | 2072 | { |
84165b80 JA |
2073 | return prcmu_a9wdog(MB4H_A9WDOG_LOAD, |
2074 | (id & A9WDOG_ID_MASK) | | |
2075 | /* | |
2076 | * Put the lowest 28 bits of timeout at | |
2077 | * offset 4. Four first bits are used for id. | |
2078 | */ | |
2079 | (u8)((timeout << 4) & 0xf0), | |
2080 | (u8)((timeout >> 4) & 0xff), | |
2081 | (u8)((timeout >> 12) & 0xff), | |
2082 | (u8)((timeout >> 20) & 0xff)); | |
2083 | } | |
6f8cfa99 | 2084 | EXPORT_SYMBOL(db8500_prcmu_load_a9wdog); |
84165b80 | 2085 | |
e3726fcf LW |
2086 | /** |
2087 | * prcmu_abb_read() - Read register value(s) from the ABB. | |
2088 | * @slave: The I2C slave address. | |
2089 | * @reg: The (start) register address. | |
2090 | * @value: The read out value(s). | |
2091 | * @size: The number of registers to read. | |
2092 | * | |
2093 | * Reads register value(s) from the ABB. | |
2094 | * @size has to be 1 for the current firmware version. | |
2095 | */ | |
2096 | int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) | |
2097 | { | |
2098 | int r; | |
2099 | ||
2100 | if (size != 1) | |
2101 | return -EINVAL; | |
2102 | ||
3df57bcf | 2103 | mutex_lock(&mb5_transfer.lock); |
e3726fcf | 2104 | |
c553b3ca | 2105 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(5)) |
e3726fcf LW |
2106 | cpu_relax(); |
2107 | ||
3c3e4898 | 2108 | writeb(0, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB5)); |
3df57bcf MN |
2109 | writeb(PRCMU_I2C_READ(slave), (tcdm_base + PRCM_REQ_MB5_I2C_SLAVE_OP)); |
2110 | writeb(PRCMU_I2C_STOP_EN, (tcdm_base + PRCM_REQ_MB5_I2C_HW_BITS)); | |
2111 | writeb(reg, (tcdm_base + PRCM_REQ_MB5_I2C_REG)); | |
2112 | writeb(0, (tcdm_base + PRCM_REQ_MB5_I2C_VAL)); | |
2113 | ||
c553b3ca | 2114 | writel(MBOX_BIT(5), PRCM_MBOX_CPU_SET); |
e3726fcf | 2115 | |
e3726fcf | 2116 | if (!wait_for_completion_timeout(&mb5_transfer.work, |
3df57bcf MN |
2117 | msecs_to_jiffies(20000))) { |
2118 | pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n", | |
2119 | __func__); | |
e3726fcf | 2120 | r = -EIO; |
3df57bcf MN |
2121 | } else { |
2122 | r = ((mb5_transfer.ack.status == I2C_RD_OK) ? 0 : -EIO); | |
e3726fcf | 2123 | } |
3df57bcf | 2124 | |
e3726fcf LW |
2125 | if (!r) |
2126 | *value = mb5_transfer.ack.value; | |
2127 | ||
e3726fcf | 2128 | mutex_unlock(&mb5_transfer.lock); |
3df57bcf | 2129 | |
e3726fcf LW |
2130 | return r; |
2131 | } | |
e3726fcf LW |
2132 | |
2133 | /** | |
3c3e4898 | 2134 | * prcmu_abb_write_masked() - Write masked register value(s) to the ABB. |
e3726fcf LW |
2135 | * @slave: The I2C slave address. |
2136 | * @reg: The (start) register address. | |
2137 | * @value: The value(s) to write. | |
3c3e4898 | 2138 | * @mask: The mask(s) to use. |
e3726fcf LW |
2139 | * @size: The number of registers to write. |
2140 | * | |
3c3e4898 MN |
2141 | * Writes masked register value(s) to the ABB. |
2142 | * For each @value, only the bits set to 1 in the corresponding @mask | |
2143 | * will be written. The other bits are not changed. | |
e3726fcf LW |
2144 | * @size has to be 1 for the current firmware version. |
2145 | */ | |
3c3e4898 | 2146 | int prcmu_abb_write_masked(u8 slave, u8 reg, u8 *value, u8 *mask, u8 size) |
e3726fcf LW |
2147 | { |
2148 | int r; | |
2149 | ||
2150 | if (size != 1) | |
2151 | return -EINVAL; | |
2152 | ||
3df57bcf | 2153 | mutex_lock(&mb5_transfer.lock); |
e3726fcf | 2154 | |
c553b3ca | 2155 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(5)) |
e3726fcf LW |
2156 | cpu_relax(); |
2157 | ||
3c3e4898 | 2158 | writeb(~*mask, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB5)); |
3df57bcf MN |
2159 | writeb(PRCMU_I2C_WRITE(slave), (tcdm_base + PRCM_REQ_MB5_I2C_SLAVE_OP)); |
2160 | writeb(PRCMU_I2C_STOP_EN, (tcdm_base + PRCM_REQ_MB5_I2C_HW_BITS)); | |
2161 | writeb(reg, (tcdm_base + PRCM_REQ_MB5_I2C_REG)); | |
2162 | writeb(*value, (tcdm_base + PRCM_REQ_MB5_I2C_VAL)); | |
2163 | ||
c553b3ca | 2164 | writel(MBOX_BIT(5), PRCM_MBOX_CPU_SET); |
e3726fcf | 2165 | |
e3726fcf | 2166 | if (!wait_for_completion_timeout(&mb5_transfer.work, |
3df57bcf MN |
2167 | msecs_to_jiffies(20000))) { |
2168 | pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n", | |
2169 | __func__); | |
e3726fcf | 2170 | r = -EIO; |
3df57bcf MN |
2171 | } else { |
2172 | r = ((mb5_transfer.ack.status == I2C_WR_OK) ? 0 : -EIO); | |
e3726fcf | 2173 | } |
e3726fcf | 2174 | |
e3726fcf | 2175 | mutex_unlock(&mb5_transfer.lock); |
3df57bcf | 2176 | |
e3726fcf LW |
2177 | return r; |
2178 | } | |
e3726fcf | 2179 | |
3c3e4898 MN |
2180 | /** |
2181 | * prcmu_abb_write() - Write register value(s) to the ABB. | |
2182 | * @slave: The I2C slave address. | |
2183 | * @reg: The (start) register address. | |
2184 | * @value: The value(s) to write. | |
2185 | * @size: The number of registers to write. | |
2186 | * | |
2187 | * Writes register value(s) to the ABB. | |
2188 | * @size has to be 1 for the current firmware version. | |
2189 | */ | |
2190 | int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) | |
2191 | { | |
2192 | u8 mask = ~0; | |
2193 | ||
2194 | return prcmu_abb_write_masked(slave, reg, value, &mask, size); | |
2195 | } | |
2196 | ||
3df57bcf MN |
2197 | /** |
2198 | * prcmu_ac_wake_req - should be called whenever ARM wants to wakeup Modem | |
2199 | */ | |
5261e101 | 2200 | int prcmu_ac_wake_req(void) |
e0befb23 | 2201 | { |
3df57bcf | 2202 | u32 val; |
5261e101 | 2203 | int ret = 0; |
e0befb23 | 2204 | |
3df57bcf | 2205 | mutex_lock(&mb0_transfer.ac_wake_lock); |
e0befb23 | 2206 | |
c553b3ca | 2207 | val = readl(PRCM_HOSTACCESS_REQ); |
3df57bcf MN |
2208 | if (val & PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ) |
2209 | goto unlock_and_return; | |
e0befb23 | 2210 | |
3df57bcf | 2211 | atomic_set(&ac_wake_req_state, 1); |
e0befb23 | 2212 | |
5261e101 AM |
2213 | /* |
2214 | * Force Modem Wake-up before hostaccess_req ping-pong. | |
2215 | * It prevents Modem to enter in Sleep while acking the hostaccess | |
2216 | * request. The 31us delay has been calculated by HWI. | |
2217 | */ | |
2218 | val |= PRCM_HOSTACCESS_REQ_WAKE_REQ; | |
2219 | writel(val, PRCM_HOSTACCESS_REQ); | |
2220 | ||
2221 | udelay(31); | |
2222 | ||
2223 | val |= PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ; | |
2224 | writel(val, PRCM_HOSTACCESS_REQ); | |
e0befb23 | 2225 | |
3df57bcf | 2226 | if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work, |
d6e3002e | 2227 | msecs_to_jiffies(5000))) { |
57265bc1 | 2228 | pr_crit("prcmu: %s timed out (5 s) waiting for a reply.\n", |
d6e3002e | 2229 | __func__); |
5261e101 | 2230 | ret = -EFAULT; |
3df57bcf | 2231 | } |
e0befb23 | 2232 | |
3df57bcf MN |
2233 | unlock_and_return: |
2234 | mutex_unlock(&mb0_transfer.ac_wake_lock); | |
5261e101 | 2235 | return ret; |
e0befb23 MP |
2236 | } |
2237 | ||
2238 | /** | |
3df57bcf | 2239 | * prcmu_ac_sleep_req - called when ARM no longer needs to talk to modem |
e0befb23 | 2240 | */ |
ffb01160 | 2241 | void prcmu_ac_sleep_req(void) |
e0befb23 | 2242 | { |
3df57bcf MN |
2243 | u32 val; |
2244 | ||
2245 | mutex_lock(&mb0_transfer.ac_wake_lock); | |
2246 | ||
c553b3ca | 2247 | val = readl(PRCM_HOSTACCESS_REQ); |
3df57bcf MN |
2248 | if (!(val & PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ)) |
2249 | goto unlock_and_return; | |
2250 | ||
2251 | writel((val & ~PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ), | |
c553b3ca | 2252 | PRCM_HOSTACCESS_REQ); |
3df57bcf MN |
2253 | |
2254 | if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work, | |
d6e3002e | 2255 | msecs_to_jiffies(5000))) { |
57265bc1 | 2256 | pr_crit("prcmu: %s timed out (5 s) waiting for a reply.\n", |
3df57bcf MN |
2257 | __func__); |
2258 | } | |
2259 | ||
2260 | atomic_set(&ac_wake_req_state, 0); | |
2261 | ||
2262 | unlock_and_return: | |
2263 | mutex_unlock(&mb0_transfer.ac_wake_lock); | |
e0befb23 | 2264 | } |
e0befb23 | 2265 | |
73180f85 | 2266 | bool db8500_prcmu_is_ac_wake_requested(void) |
e0befb23 | 2267 | { |
3df57bcf | 2268 | return (atomic_read(&ac_wake_req_state) != 0); |
e0befb23 | 2269 | } |
e0befb23 MP |
2270 | |
2271 | /** | |
73180f85 | 2272 | * db8500_prcmu_system_reset - System reset |
e0befb23 | 2273 | * |
73180f85 | 2274 | * Saves the reset reason code and then sets the APE_SOFTRST register which |
3df57bcf | 2275 | * fires interrupt to fw |
3ecbcd20 LJ |
2276 | * |
2277 | * @reset_code: The reason for system reset | |
e0befb23 | 2278 | */ |
73180f85 | 2279 | void db8500_prcmu_system_reset(u16 reset_code) |
e0befb23 | 2280 | { |
3df57bcf | 2281 | writew(reset_code, (tcdm_base + PRCM_SW_RST_REASON)); |
c553b3ca | 2282 | writel(1, PRCM_APE_SOFTRST); |
e0befb23 | 2283 | } |
e0befb23 | 2284 | |
597045de SR |
2285 | /** |
2286 | * db8500_prcmu_get_reset_code - Retrieve SW reset reason code | |
2287 | * | |
2288 | * Retrieves the reset reason code stored by prcmu_system_reset() before | |
2289 | * last restart. | |
2290 | */ | |
2291 | u16 db8500_prcmu_get_reset_code(void) | |
2292 | { | |
2293 | return readw(tcdm_base + PRCM_SW_RST_REASON); | |
2294 | } | |
2295 | ||
e0befb23 | 2296 | /** |
e00a953b | 2297 | * db8500_prcmu_modem_reset - ask the PRCMU to reset modem |
e0befb23 | 2298 | */ |
0508901c | 2299 | void db8500_prcmu_modem_reset(void) |
e0befb23 | 2300 | { |
3df57bcf MN |
2301 | mutex_lock(&mb1_transfer.lock); |
2302 | ||
c553b3ca | 2303 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) |
3df57bcf MN |
2304 | cpu_relax(); |
2305 | ||
2306 | writeb(MB1H_RESET_MODEM, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); | |
c553b3ca | 2307 | writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
2308 | wait_for_completion(&mb1_transfer.work); |
2309 | ||
2310 | /* | |
2311 | * No need to check return from PRCMU as modem should go in reset state | |
2312 | * This state is already managed by upper layer | |
2313 | */ | |
2314 | ||
2315 | mutex_unlock(&mb1_transfer.lock); | |
e0befb23 | 2316 | } |
e0befb23 | 2317 | |
3df57bcf | 2318 | static void ack_dbb_wakeup(void) |
e0befb23 | 2319 | { |
3df57bcf MN |
2320 | unsigned long flags; |
2321 | ||
2322 | spin_lock_irqsave(&mb0_transfer.lock, flags); | |
2323 | ||
c553b3ca | 2324 | while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) |
3df57bcf MN |
2325 | cpu_relax(); |
2326 | ||
2327 | writeb(MB0H_READ_WAKEUP_ACK, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0)); | |
c553b3ca | 2328 | writel(MBOX_BIT(0), PRCM_MBOX_CPU_SET); |
3df57bcf MN |
2329 | |
2330 | spin_unlock_irqrestore(&mb0_transfer.lock, flags); | |
e0befb23 | 2331 | } |
e0befb23 | 2332 | |
3df57bcf | 2333 | static inline void print_unknown_header_warning(u8 n, u8 header) |
e0befb23 | 2334 | { |
81d30eda | 2335 | pr_warn("prcmu: Unknown message header (%d) in mailbox %d\n", |
3df57bcf | 2336 | header, n); |
e0befb23 MP |
2337 | } |
2338 | ||
3df57bcf | 2339 | static bool read_mailbox_0(void) |
e3726fcf | 2340 | { |
3df57bcf MN |
2341 | bool r; |
2342 | u32 ev; | |
2343 | unsigned int n; | |
2344 | u8 header; | |
2345 | ||
2346 | header = readb(tcdm_base + PRCM_MBOX_HEADER_ACK_MB0); | |
2347 | switch (header) { | |
2348 | case MB0H_WAKEUP_EXE: | |
2349 | case MB0H_WAKEUP_SLEEP: | |
2350 | if (readb(tcdm_base + PRCM_ACK_MB0_READ_POINTER) & 1) | |
2351 | ev = readl(tcdm_base + PRCM_ACK_MB0_WAKEUP_1_8500); | |
2352 | else | |
2353 | ev = readl(tcdm_base + PRCM_ACK_MB0_WAKEUP_0_8500); | |
2354 | ||
2355 | if (ev & (WAKEUP_BIT_AC_WAKE_ACK | WAKEUP_BIT_AC_SLEEP_ACK)) | |
2356 | complete(&mb0_transfer.ac_wake_work); | |
2357 | if (ev & WAKEUP_BIT_SYSCLK_OK) | |
2358 | complete(&mb3_transfer.sysclk_work); | |
2359 | ||
2360 | ev &= mb0_transfer.req.dbb_irqs; | |
2361 | ||
2362 | for (n = 0; n < NUM_PRCMU_WAKEUPS; n++) { | |
2363 | if (ev & prcmu_irq_bit[n]) | |
3b0cccef | 2364 | generic_handle_domain_irq(db8500_irq_domain, n); |
3df57bcf MN |
2365 | } |
2366 | r = true; | |
2367 | break; | |
2368 | default: | |
2369 | print_unknown_header_warning(0, header); | |
2370 | r = false; | |
2371 | break; | |
2372 | } | |
c553b3ca | 2373 | writel(MBOX_BIT(0), PRCM_ARM_IT1_CLR); |
3df57bcf | 2374 | return r; |
e3726fcf LW |
2375 | } |
2376 | ||
3df57bcf | 2377 | static bool read_mailbox_1(void) |
e3726fcf | 2378 | { |
3df57bcf MN |
2379 | mb1_transfer.ack.header = readb(tcdm_base + PRCM_MBOX_HEADER_REQ_MB1); |
2380 | mb1_transfer.ack.arm_opp = readb(tcdm_base + | |
2381 | PRCM_ACK_MB1_CURRENT_ARM_OPP); | |
2382 | mb1_transfer.ack.ape_opp = readb(tcdm_base + | |
2383 | PRCM_ACK_MB1_CURRENT_APE_OPP); | |
2384 | mb1_transfer.ack.ape_voltage_status = readb(tcdm_base + | |
2385 | PRCM_ACK_MB1_APE_VOLTAGE_STATUS); | |
c553b3ca | 2386 | writel(MBOX_BIT(1), PRCM_ARM_IT1_CLR); |
e0befb23 | 2387 | complete(&mb1_transfer.work); |
3df57bcf | 2388 | return false; |
e3726fcf LW |
2389 | } |
2390 | ||
3df57bcf | 2391 | static bool read_mailbox_2(void) |
e3726fcf | 2392 | { |
3df57bcf | 2393 | mb2_transfer.ack.status = readb(tcdm_base + PRCM_ACK_MB2_DPS_STATUS); |
c553b3ca | 2394 | writel(MBOX_BIT(2), PRCM_ARM_IT1_CLR); |
3df57bcf MN |
2395 | complete(&mb2_transfer.work); |
2396 | return false; | |
e3726fcf LW |
2397 | } |
2398 | ||
3df57bcf | 2399 | static bool read_mailbox_3(void) |
e3726fcf | 2400 | { |
c553b3ca | 2401 | writel(MBOX_BIT(3), PRCM_ARM_IT1_CLR); |
3df57bcf | 2402 | return false; |
e3726fcf LW |
2403 | } |
2404 | ||
3df57bcf | 2405 | static bool read_mailbox_4(void) |
e3726fcf | 2406 | { |
3df57bcf MN |
2407 | u8 header; |
2408 | bool do_complete = true; | |
2409 | ||
2410 | header = readb(tcdm_base + PRCM_MBOX_HEADER_REQ_MB4); | |
2411 | switch (header) { | |
2412 | case MB4H_MEM_ST: | |
2413 | case MB4H_HOTDOG: | |
2414 | case MB4H_HOTMON: | |
2415 | case MB4H_HOT_PERIOD: | |
a592c2e2 MN |
2416 | case MB4H_A9WDOG_CONF: |
2417 | case MB4H_A9WDOG_EN: | |
2418 | case MB4H_A9WDOG_DIS: | |
2419 | case MB4H_A9WDOG_LOAD: | |
2420 | case MB4H_A9WDOG_KICK: | |
3df57bcf MN |
2421 | break; |
2422 | default: | |
2423 | print_unknown_header_warning(4, header); | |
2424 | do_complete = false; | |
2425 | break; | |
2426 | } | |
2427 | ||
c553b3ca | 2428 | writel(MBOX_BIT(4), PRCM_ARM_IT1_CLR); |
3df57bcf MN |
2429 | |
2430 | if (do_complete) | |
2431 | complete(&mb4_transfer.work); | |
2432 | ||
2433 | return false; | |
e3726fcf LW |
2434 | } |
2435 | ||
3df57bcf | 2436 | static bool read_mailbox_5(void) |
e3726fcf | 2437 | { |
3df57bcf MN |
2438 | mb5_transfer.ack.status = readb(tcdm_base + PRCM_ACK_MB5_I2C_STATUS); |
2439 | mb5_transfer.ack.value = readb(tcdm_base + PRCM_ACK_MB5_I2C_VAL); | |
c553b3ca | 2440 | writel(MBOX_BIT(5), PRCM_ARM_IT1_CLR); |
e3726fcf | 2441 | complete(&mb5_transfer.work); |
3df57bcf | 2442 | return false; |
e3726fcf LW |
2443 | } |
2444 | ||
3df57bcf | 2445 | static bool read_mailbox_6(void) |
e3726fcf | 2446 | { |
c553b3ca | 2447 | writel(MBOX_BIT(6), PRCM_ARM_IT1_CLR); |
3df57bcf | 2448 | return false; |
e3726fcf LW |
2449 | } |
2450 | ||
3df57bcf | 2451 | static bool read_mailbox_7(void) |
e3726fcf | 2452 | { |
c553b3ca | 2453 | writel(MBOX_BIT(7), PRCM_ARM_IT1_CLR); |
3df57bcf | 2454 | return false; |
e3726fcf LW |
2455 | } |
2456 | ||
3df57bcf | 2457 | static bool (* const read_mailbox[NUM_MB])(void) = { |
e3726fcf LW |
2458 | read_mailbox_0, |
2459 | read_mailbox_1, | |
2460 | read_mailbox_2, | |
2461 | read_mailbox_3, | |
2462 | read_mailbox_4, | |
2463 | read_mailbox_5, | |
2464 | read_mailbox_6, | |
2465 | read_mailbox_7 | |
2466 | }; | |
2467 | ||
2468 | static irqreturn_t prcmu_irq_handler(int irq, void *data) | |
2469 | { | |
2470 | u32 bits; | |
2471 | u8 n; | |
3df57bcf | 2472 | irqreturn_t r; |
e3726fcf | 2473 | |
c553b3ca | 2474 | bits = (readl(PRCM_ARM_IT1_VAL) & ALL_MBOX_BITS); |
e3726fcf LW |
2475 | if (unlikely(!bits)) |
2476 | return IRQ_NONE; | |
2477 | ||
3df57bcf | 2478 | r = IRQ_HANDLED; |
e3726fcf LW |
2479 | for (n = 0; bits; n++) { |
2480 | if (bits & MBOX_BIT(n)) { | |
2481 | bits -= MBOX_BIT(n); | |
3df57bcf MN |
2482 | if (read_mailbox[n]()) |
2483 | r = IRQ_WAKE_THREAD; | |
e3726fcf LW |
2484 | } |
2485 | } | |
3df57bcf MN |
2486 | return r; |
2487 | } | |
2488 | ||
2489 | static irqreturn_t prcmu_irq_thread_fn(int irq, void *data) | |
2490 | { | |
2491 | ack_dbb_wakeup(); | |
e3726fcf LW |
2492 | return IRQ_HANDLED; |
2493 | } | |
2494 | ||
3df57bcf MN |
2495 | static void prcmu_mask_work(struct work_struct *work) |
2496 | { | |
2497 | unsigned long flags; | |
2498 | ||
2499 | spin_lock_irqsave(&mb0_transfer.lock, flags); | |
2500 | ||
2501 | config_wakeups(); | |
2502 | ||
2503 | spin_unlock_irqrestore(&mb0_transfer.lock, flags); | |
2504 | } | |
2505 | ||
2506 | static void prcmu_irq_mask(struct irq_data *d) | |
2507 | { | |
2508 | unsigned long flags; | |
2509 | ||
2510 | spin_lock_irqsave(&mb0_transfer.dbb_irqs_lock, flags); | |
2511 | ||
f3f1f0a1 | 2512 | mb0_transfer.req.dbb_irqs &= ~prcmu_irq_bit[d->hwirq]; |
3df57bcf MN |
2513 | |
2514 | spin_unlock_irqrestore(&mb0_transfer.dbb_irqs_lock, flags); | |
2515 | ||
2516 | if (d->irq != IRQ_PRCMU_CA_SLEEP) | |
2517 | schedule_work(&mb0_transfer.mask_work); | |
2518 | } | |
2519 | ||
2520 | static void prcmu_irq_unmask(struct irq_data *d) | |
2521 | { | |
2522 | unsigned long flags; | |
2523 | ||
2524 | spin_lock_irqsave(&mb0_transfer.dbb_irqs_lock, flags); | |
2525 | ||
f3f1f0a1 | 2526 | mb0_transfer.req.dbb_irqs |= prcmu_irq_bit[d->hwirq]; |
3df57bcf MN |
2527 | |
2528 | spin_unlock_irqrestore(&mb0_transfer.dbb_irqs_lock, flags); | |
2529 | ||
2530 | if (d->irq != IRQ_PRCMU_CA_SLEEP) | |
2531 | schedule_work(&mb0_transfer.mask_work); | |
2532 | } | |
2533 | ||
2534 | static void noop(struct irq_data *d) | |
2535 | { | |
2536 | } | |
2537 | ||
2538 | static struct irq_chip prcmu_irq_chip = { | |
2539 | .name = "prcmu", | |
2540 | .irq_disable = prcmu_irq_mask, | |
2541 | .irq_ack = noop, | |
2542 | .irq_mask = prcmu_irq_mask, | |
2543 | .irq_unmask = prcmu_irq_unmask, | |
2544 | }; | |
2545 | ||
a3888f62 | 2546 | static char *fw_project_name(u32 project) |
b58d12fe MN |
2547 | { |
2548 | switch (project) { | |
2549 | case PRCMU_FW_PROJECT_U8500: | |
2550 | return "U8500"; | |
05ec260e LW |
2551 | case PRCMU_FW_PROJECT_U8400: |
2552 | return "U8400"; | |
b58d12fe MN |
2553 | case PRCMU_FW_PROJECT_U9500: |
2554 | return "U9500"; | |
05ec260e LW |
2555 | case PRCMU_FW_PROJECT_U8500_MBB: |
2556 | return "U8500 MBB"; | |
2557 | case PRCMU_FW_PROJECT_U8500_C1: | |
2558 | return "U8500 C1"; | |
2559 | case PRCMU_FW_PROJECT_U8500_C2: | |
2560 | return "U8500 C2"; | |
2561 | case PRCMU_FW_PROJECT_U8500_C3: | |
2562 | return "U8500 C3"; | |
2563 | case PRCMU_FW_PROJECT_U8500_C4: | |
2564 | return "U8500 C4"; | |
2565 | case PRCMU_FW_PROJECT_U9500_MBL: | |
2566 | return "U9500 MBL"; | |
9050ad81 LW |
2567 | case PRCMU_FW_PROJECT_U8500_SSG1: |
2568 | return "U8500 Samsung 1"; | |
05ec260e LW |
2569 | case PRCMU_FW_PROJECT_U8500_MBL2: |
2570 | return "U8500 MBL2"; | |
5f96a1a6 | 2571 | case PRCMU_FW_PROJECT_U8520: |
05ec260e | 2572 | return "U8520 MBL"; |
1927ddf6 BJ |
2573 | case PRCMU_FW_PROJECT_U8420: |
2574 | return "U8420"; | |
9050ad81 LW |
2575 | case PRCMU_FW_PROJECT_U8500_SSG2: |
2576 | return "U8500 Samsung 2"; | |
22fb3ad0 LW |
2577 | case PRCMU_FW_PROJECT_U8420_SYSCLK: |
2578 | return "U8420-sysclk"; | |
05ec260e LW |
2579 | case PRCMU_FW_PROJECT_U9540: |
2580 | return "U9540"; | |
2581 | case PRCMU_FW_PROJECT_A9420: | |
2582 | return "A9420"; | |
2583 | case PRCMU_FW_PROJECT_L8540: | |
2584 | return "L8540"; | |
2585 | case PRCMU_FW_PROJECT_L8580: | |
2586 | return "L8580"; | |
b58d12fe MN |
2587 | default: |
2588 | return "Unknown"; | |
2589 | } | |
2590 | } | |
2591 | ||
f3f1f0a1 LJ |
2592 | static int db8500_irq_map(struct irq_domain *d, unsigned int virq, |
2593 | irq_hw_number_t hwirq) | |
2594 | { | |
2595 | irq_set_chip_and_handler(virq, &prcmu_irq_chip, | |
2596 | handle_simple_irq); | |
f3f1f0a1 LJ |
2597 | |
2598 | return 0; | |
2599 | } | |
2600 | ||
7ce7b26f | 2601 | static const struct irq_domain_ops db8500_irq_ops = { |
89d9b1c9 LW |
2602 | .map = db8500_irq_map, |
2603 | .xlate = irq_domain_xlate_twocell, | |
f3f1f0a1 LJ |
2604 | }; |
2605 | ||
f864c46a | 2606 | static int db8500_irq_init(struct device_node *np) |
f3f1f0a1 | 2607 | { |
89d9b1c9 | 2608 | int i; |
a7238e43 | 2609 | |
a7238e43 | 2610 | db8500_irq_domain = irq_domain_add_simple( |
f864c46a | 2611 | np, NUM_PRCMU_WAKEUPS, 0, |
a7238e43 | 2612 | &db8500_irq_ops, NULL); |
f3f1f0a1 LJ |
2613 | |
2614 | if (!db8500_irq_domain) { | |
2615 | pr_err("Failed to create irqdomain\n"); | |
2616 | return -ENOSYS; | |
2617 | } | |
2618 | ||
89d9b1c9 LW |
2619 | /* All wakeups will be used, so create mappings for all */ |
2620 | for (i = 0; i < NUM_PRCMU_WAKEUPS; i++) | |
2621 | irq_create_mapping(db8500_irq_domain, i); | |
2622 | ||
f3f1f0a1 LJ |
2623 | return 0; |
2624 | } | |
2625 | ||
22fb3ad0 | 2626 | static void dbx500_fw_version_init(struct device_node *np) |
fcbd458e | 2627 | { |
05ec260e | 2628 | void __iomem *tcpm_base; |
741cdecf | 2629 | u32 version; |
3df57bcf | 2630 | |
22fb3ad0 | 2631 | tcpm_base = of_iomap(np, 1); |
741cdecf | 2632 | if (!tcpm_base) { |
22fb3ad0 | 2633 | pr_err("no prcmu tcpm mem region provided\n"); |
741cdecf | 2634 | return; |
fcbd458e | 2635 | } |
741cdecf | 2636 | |
22fb3ad0 | 2637 | version = readl(tcpm_base + DB8500_PRCMU_FW_VERSION_OFFSET); |
741cdecf LJ |
2638 | fw_info.version.project = (version & 0xFF); |
2639 | fw_info.version.api_version = (version >> 8) & 0xFF; | |
2640 | fw_info.version.func_version = (version >> 16) & 0xFF; | |
2641 | fw_info.version.errata = (version >> 24) & 0xFF; | |
6bce6296 | 2642 | strscpy(fw_info.version.project_name, |
741cdecf | 2643 | fw_project_name(fw_info.version.project), |
6bce6296 | 2644 | sizeof(fw_info.version.project_name)); |
741cdecf LJ |
2645 | fw_info.valid = true; |
2646 | pr_info("PRCMU firmware: %s(%d), version %d.%d.%d\n", | |
2647 | fw_info.version.project_name, | |
2648 | fw_info.version.project, | |
2649 | fw_info.version.api_version, | |
2650 | fw_info.version.func_version, | |
2651 | fw_info.version.errata); | |
2652 | iounmap(tcpm_base); | |
05ec260e | 2653 | } |
e0befb23 | 2654 | |
22fb3ad0 | 2655 | void __init db8500_prcmu_early_init(void) |
05ec260e | 2656 | { |
9a47a8dc LW |
2657 | /* |
2658 | * This is a temporary remap to bring up the clocks. It is | |
2659 | * subsequently replaces with a real remap. After the merge of | |
2660 | * the mailbox subsystem all of this early code goes away, and the | |
2661 | * clock driver can probe independently. An early initcall will | |
2662 | * still be needed, but it can be diverted into drivers/clk/ux500. | |
2663 | */ | |
22fb3ad0 LW |
2664 | struct device_node *np; |
2665 | ||
2666 | np = of_find_compatible_node(NULL, NULL, "stericsson,db8500-prcmu"); | |
2667 | prcmu_base = of_iomap(np, 0); | |
2668 | if (!prcmu_base) { | |
2669 | of_node_put(np); | |
9a47a8dc | 2670 | pr_err("%s: ioremap() of prcmu registers failed!\n", __func__); |
22fb3ad0 LW |
2671 | return; |
2672 | } | |
2673 | dbx500_fw_version_init(np); | |
2674 | of_node_put(np); | |
9a47a8dc | 2675 | |
3df57bcf MN |
2676 | spin_lock_init(&mb0_transfer.lock); |
2677 | spin_lock_init(&mb0_transfer.dbb_irqs_lock); | |
2678 | mutex_init(&mb0_transfer.ac_wake_lock); | |
2679 | init_completion(&mb0_transfer.ac_wake_work); | |
e0befb23 MP |
2680 | mutex_init(&mb1_transfer.lock); |
2681 | init_completion(&mb1_transfer.work); | |
4d64d2e3 | 2682 | mb1_transfer.ape_opp = APE_NO_CHANGE; |
3df57bcf MN |
2683 | mutex_init(&mb2_transfer.lock); |
2684 | init_completion(&mb2_transfer.work); | |
2685 | spin_lock_init(&mb2_transfer.auto_pm_lock); | |
2686 | spin_lock_init(&mb3_transfer.lock); | |
2687 | mutex_init(&mb3_transfer.sysclk_lock); | |
2688 | init_completion(&mb3_transfer.sysclk_work); | |
2689 | mutex_init(&mb4_transfer.lock); | |
2690 | init_completion(&mb4_transfer.work); | |
e3726fcf LW |
2691 | mutex_init(&mb5_transfer.lock); |
2692 | init_completion(&mb5_transfer.work); | |
2693 | ||
3df57bcf | 2694 | INIT_WORK(&mb0_transfer.mask_work, prcmu_mask_work); |
3df57bcf MN |
2695 | } |
2696 | ||
a3888f62 | 2697 | static void init_prcm_registers(void) |
d65e12d7 MN |
2698 | { |
2699 | u32 val; | |
2700 | ||
2701 | val = readl(PRCM_A9PL_FORCE_CLKEN); | |
2702 | val &= ~(PRCM_A9PL_FORCE_CLKEN_PRCM_A9PL_FORCE_CLKEN | | |
2703 | PRCM_A9PL_FORCE_CLKEN_PRCM_A9AXI_FORCE_CLKEN); | |
2704 | writel(val, (PRCM_A9PL_FORCE_CLKEN)); | |
2705 | } | |
2706 | ||
1032fbfd BJ |
2707 | /* |
2708 | * Power domain switches (ePODs) modeled as regulators for the DB8500 SoC | |
2709 | */ | |
2710 | static struct regulator_consumer_supply db8500_vape_consumers[] = { | |
2711 | REGULATOR_SUPPLY("v-ape", NULL), | |
2712 | REGULATOR_SUPPLY("v-i2c", "nmk-i2c.0"), | |
2713 | REGULATOR_SUPPLY("v-i2c", "nmk-i2c.1"), | |
2714 | REGULATOR_SUPPLY("v-i2c", "nmk-i2c.2"), | |
2715 | REGULATOR_SUPPLY("v-i2c", "nmk-i2c.3"), | |
ae840635 | 2716 | REGULATOR_SUPPLY("v-i2c", "nmk-i2c.4"), |
1032fbfd BJ |
2717 | /* "v-mmc" changed to "vcore" in the mainline kernel */ |
2718 | REGULATOR_SUPPLY("vcore", "sdi0"), | |
2719 | REGULATOR_SUPPLY("vcore", "sdi1"), | |
2720 | REGULATOR_SUPPLY("vcore", "sdi2"), | |
2721 | REGULATOR_SUPPLY("vcore", "sdi3"), | |
2722 | REGULATOR_SUPPLY("vcore", "sdi4"), | |
2723 | REGULATOR_SUPPLY("v-dma", "dma40.0"), | |
2724 | REGULATOR_SUPPLY("v-ape", "ab8500-usb.0"), | |
2725 | /* "v-uart" changed to "vcore" in the mainline kernel */ | |
2726 | REGULATOR_SUPPLY("vcore", "uart0"), | |
2727 | REGULATOR_SUPPLY("vcore", "uart1"), | |
2728 | REGULATOR_SUPPLY("vcore", "uart2"), | |
2729 | REGULATOR_SUPPLY("v-ape", "nmk-ske-keypad.0"), | |
992b133a | 2730 | REGULATOR_SUPPLY("v-hsi", "ste_hsi.0"), |
bc367481 | 2731 | REGULATOR_SUPPLY("vddvario", "smsc911x.0"), |
1032fbfd BJ |
2732 | }; |
2733 | ||
2734 | static struct regulator_consumer_supply db8500_vsmps2_consumers[] = { | |
1032fbfd BJ |
2735 | REGULATOR_SUPPLY("musb_1v8", "ab8500-usb.0"), |
2736 | /* AV8100 regulator */ | |
2737 | REGULATOR_SUPPLY("hdmi_1v8", "0-0070"), | |
2738 | }; | |
2739 | ||
2740 | static struct regulator_consumer_supply db8500_b2r2_mcde_consumers[] = { | |
992b133a | 2741 | REGULATOR_SUPPLY("vsupply", "b2r2_bus"), |
624e87c2 BJ |
2742 | REGULATOR_SUPPLY("vsupply", "mcde"), |
2743 | }; | |
2744 | ||
2745 | /* SVA MMDSP regulator switch */ | |
2746 | static struct regulator_consumer_supply db8500_svammdsp_consumers[] = { | |
2747 | REGULATOR_SUPPLY("sva-mmdsp", "cm_control"), | |
2748 | }; | |
2749 | ||
2750 | /* SVA pipe regulator switch */ | |
2751 | static struct regulator_consumer_supply db8500_svapipe_consumers[] = { | |
2752 | REGULATOR_SUPPLY("sva-pipe", "cm_control"), | |
2753 | }; | |
2754 | ||
2755 | /* SIA MMDSP regulator switch */ | |
2756 | static struct regulator_consumer_supply db8500_siammdsp_consumers[] = { | |
2757 | REGULATOR_SUPPLY("sia-mmdsp", "cm_control"), | |
2758 | }; | |
2759 | ||
2760 | /* SIA pipe regulator switch */ | |
2761 | static struct regulator_consumer_supply db8500_siapipe_consumers[] = { | |
2762 | REGULATOR_SUPPLY("sia-pipe", "cm_control"), | |
2763 | }; | |
2764 | ||
2765 | static struct regulator_consumer_supply db8500_sga_consumers[] = { | |
2766 | REGULATOR_SUPPLY("v-mali", NULL), | |
2767 | }; | |
2768 | ||
2769 | /* ESRAM1 and 2 regulator switch */ | |
2770 | static struct regulator_consumer_supply db8500_esram12_consumers[] = { | |
2771 | REGULATOR_SUPPLY("esram12", "cm_control"), | |
2772 | }; | |
2773 | ||
2774 | /* ESRAM3 and 4 regulator switch */ | |
2775 | static struct regulator_consumer_supply db8500_esram34_consumers[] = { | |
2776 | REGULATOR_SUPPLY("v-esram34", "mcde"), | |
2777 | REGULATOR_SUPPLY("esram34", "cm_control"), | |
992b133a | 2778 | REGULATOR_SUPPLY("lcla_esram", "dma40.0"), |
1032fbfd BJ |
2779 | }; |
2780 | ||
2781 | static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { | |
2782 | [DB8500_REGULATOR_VAPE] = { | |
2783 | .constraints = { | |
2784 | .name = "db8500-vape", | |
2785 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
1e45860f | 2786 | .always_on = true, |
1032fbfd BJ |
2787 | }, |
2788 | .consumer_supplies = db8500_vape_consumers, | |
2789 | .num_consumer_supplies = ARRAY_SIZE(db8500_vape_consumers), | |
2790 | }, | |
2791 | [DB8500_REGULATOR_VARM] = { | |
2792 | .constraints = { | |
2793 | .name = "db8500-varm", | |
2794 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2795 | }, | |
2796 | }, | |
2797 | [DB8500_REGULATOR_VMODEM] = { | |
2798 | .constraints = { | |
2799 | .name = "db8500-vmodem", | |
2800 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2801 | }, | |
2802 | }, | |
2803 | [DB8500_REGULATOR_VPLL] = { | |
2804 | .constraints = { | |
2805 | .name = "db8500-vpll", | |
2806 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2807 | }, | |
2808 | }, | |
2809 | [DB8500_REGULATOR_VSMPS1] = { | |
2810 | .constraints = { | |
2811 | .name = "db8500-vsmps1", | |
2812 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2813 | }, | |
2814 | }, | |
2815 | [DB8500_REGULATOR_VSMPS2] = { | |
2816 | .constraints = { | |
2817 | .name = "db8500-vsmps2", | |
2818 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2819 | }, | |
2820 | .consumer_supplies = db8500_vsmps2_consumers, | |
2821 | .num_consumer_supplies = ARRAY_SIZE(db8500_vsmps2_consumers), | |
2822 | }, | |
2823 | [DB8500_REGULATOR_VSMPS3] = { | |
2824 | .constraints = { | |
2825 | .name = "db8500-vsmps3", | |
2826 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2827 | }, | |
2828 | }, | |
2829 | [DB8500_REGULATOR_VRF1] = { | |
2830 | .constraints = { | |
2831 | .name = "db8500-vrf1", | |
2832 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2833 | }, | |
2834 | }, | |
2835 | [DB8500_REGULATOR_SWITCH_SVAMMDSP] = { | |
992b133a | 2836 | /* dependency to u8500-vape is handled outside regulator framework */ |
1032fbfd BJ |
2837 | .constraints = { |
2838 | .name = "db8500-sva-mmdsp", | |
2839 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2840 | }, | |
624e87c2 BJ |
2841 | .consumer_supplies = db8500_svammdsp_consumers, |
2842 | .num_consumer_supplies = ARRAY_SIZE(db8500_svammdsp_consumers), | |
1032fbfd BJ |
2843 | }, |
2844 | [DB8500_REGULATOR_SWITCH_SVAMMDSPRET] = { | |
2845 | .constraints = { | |
2846 | /* "ret" means "retention" */ | |
2847 | .name = "db8500-sva-mmdsp-ret", | |
2848 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2849 | }, | |
2850 | }, | |
2851 | [DB8500_REGULATOR_SWITCH_SVAPIPE] = { | |
992b133a | 2852 | /* dependency to u8500-vape is handled outside regulator framework */ |
1032fbfd BJ |
2853 | .constraints = { |
2854 | .name = "db8500-sva-pipe", | |
2855 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2856 | }, | |
624e87c2 BJ |
2857 | .consumer_supplies = db8500_svapipe_consumers, |
2858 | .num_consumer_supplies = ARRAY_SIZE(db8500_svapipe_consumers), | |
1032fbfd BJ |
2859 | }, |
2860 | [DB8500_REGULATOR_SWITCH_SIAMMDSP] = { | |
992b133a | 2861 | /* dependency to u8500-vape is handled outside regulator framework */ |
1032fbfd BJ |
2862 | .constraints = { |
2863 | .name = "db8500-sia-mmdsp", | |
2864 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2865 | }, | |
624e87c2 BJ |
2866 | .consumer_supplies = db8500_siammdsp_consumers, |
2867 | .num_consumer_supplies = ARRAY_SIZE(db8500_siammdsp_consumers), | |
1032fbfd BJ |
2868 | }, |
2869 | [DB8500_REGULATOR_SWITCH_SIAMMDSPRET] = { | |
2870 | .constraints = { | |
2871 | .name = "db8500-sia-mmdsp-ret", | |
2872 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2873 | }, | |
2874 | }, | |
2875 | [DB8500_REGULATOR_SWITCH_SIAPIPE] = { | |
992b133a | 2876 | /* dependency to u8500-vape is handled outside regulator framework */ |
1032fbfd BJ |
2877 | .constraints = { |
2878 | .name = "db8500-sia-pipe", | |
2879 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2880 | }, | |
624e87c2 BJ |
2881 | .consumer_supplies = db8500_siapipe_consumers, |
2882 | .num_consumer_supplies = ARRAY_SIZE(db8500_siapipe_consumers), | |
1032fbfd BJ |
2883 | }, |
2884 | [DB8500_REGULATOR_SWITCH_SGA] = { | |
2885 | .supply_regulator = "db8500-vape", | |
2886 | .constraints = { | |
2887 | .name = "db8500-sga", | |
2888 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2889 | }, | |
624e87c2 BJ |
2890 | .consumer_supplies = db8500_sga_consumers, |
2891 | .num_consumer_supplies = ARRAY_SIZE(db8500_sga_consumers), | |
2892 | ||
1032fbfd BJ |
2893 | }, |
2894 | [DB8500_REGULATOR_SWITCH_B2R2_MCDE] = { | |
2895 | .supply_regulator = "db8500-vape", | |
2896 | .constraints = { | |
2897 | .name = "db8500-b2r2-mcde", | |
2898 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2899 | }, | |
2900 | .consumer_supplies = db8500_b2r2_mcde_consumers, | |
2901 | .num_consumer_supplies = ARRAY_SIZE(db8500_b2r2_mcde_consumers), | |
2902 | }, | |
2903 | [DB8500_REGULATOR_SWITCH_ESRAM12] = { | |
992b133a BJ |
2904 | /* |
2905 | * esram12 is set in retention and supplied by Vsafe when Vape is off, | |
2906 | * no need to hold Vape | |
2907 | */ | |
1032fbfd BJ |
2908 | .constraints = { |
2909 | .name = "db8500-esram12", | |
2910 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2911 | }, | |
624e87c2 BJ |
2912 | .consumer_supplies = db8500_esram12_consumers, |
2913 | .num_consumer_supplies = ARRAY_SIZE(db8500_esram12_consumers), | |
1032fbfd BJ |
2914 | }, |
2915 | [DB8500_REGULATOR_SWITCH_ESRAM12RET] = { | |
2916 | .constraints = { | |
2917 | .name = "db8500-esram12-ret", | |
2918 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2919 | }, | |
2920 | }, | |
2921 | [DB8500_REGULATOR_SWITCH_ESRAM34] = { | |
992b133a BJ |
2922 | /* |
2923 | * esram34 is set in retention and supplied by Vsafe when Vape is off, | |
2924 | * no need to hold Vape | |
2925 | */ | |
1032fbfd BJ |
2926 | .constraints = { |
2927 | .name = "db8500-esram34", | |
2928 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2929 | }, | |
624e87c2 BJ |
2930 | .consumer_supplies = db8500_esram34_consumers, |
2931 | .num_consumer_supplies = ARRAY_SIZE(db8500_esram34_consumers), | |
1032fbfd BJ |
2932 | }, |
2933 | [DB8500_REGULATOR_SWITCH_ESRAM34RET] = { | |
2934 | .constraints = { | |
2935 | .name = "db8500-esram34-ret", | |
2936 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, | |
2937 | }, | |
2938 | }, | |
2939 | }; | |
2940 | ||
5ac98553 | 2941 | static const struct mfd_cell common_prcmu_devs[] = { |
c7388880 | 2942 | MFD_CELL_NAME("db8500_wdt"), |
f28fd3b6 | 2943 | MFD_CELL_NAME("db8500-cpuidle"), |
d98a5384 LJ |
2944 | }; |
2945 | ||
5ac98553 | 2946 | static const struct mfd_cell db8500_prcmu_devs[] = { |
db783e76 | 2947 | MFD_CELL_OF("db8500-prcmu-regulators", NULL, |
a04b4be6 LJ |
2948 | &db8500_regulators, sizeof(db8500_regulators), 0, |
2949 | "stericsson,db8500-prcmu-regulator"), | |
db783e76 | 2950 | MFD_CELL_OF("db8500-thermal", |
a04b4be6 | 2951 | NULL, NULL, 0, 0, "stericsson,db8500-thermal"), |
3df57bcf MN |
2952 | }; |
2953 | ||
4e657946 | 2954 | static int db8500_prcmu_register_ab8500(struct device *parent) |
55b175d7 | 2955 | { |
f864c46a | 2956 | struct device_node *np; |
1c0769d2 | 2957 | struct resource ab850x_resource; |
5785a97e | 2958 | const struct mfd_cell ab8500_cell = { |
55b175d7 AB |
2959 | .name = "ab8500-core", |
2960 | .of_compatible = "stericsson,ab8500", | |
2961 | .id = AB8500_VERSION_AB8500, | |
1c0769d2 | 2962 | .resources = &ab850x_resource, |
55b175d7 AB |
2963 | .num_resources = 1, |
2964 | }; | |
1c0769d2 SG |
2965 | const struct mfd_cell ab8505_cell = { |
2966 | .name = "ab8505-core", | |
2967 | .of_compatible = "stericsson,ab8505", | |
2968 | .id = AB8500_VERSION_AB8505, | |
2969 | .resources = &ab850x_resource, | |
2970 | .num_resources = 1, | |
2971 | }; | |
2972 | const struct mfd_cell *ab850x_cell; | |
55b175d7 | 2973 | |
f864c46a LW |
2974 | if (!parent->of_node) |
2975 | return -ENODEV; | |
2976 | ||
2977 | /* Look up the device node, sneak the IRQ out of it */ | |
2978 | for_each_child_of_node(parent->of_node, np) { | |
1c0769d2 SG |
2979 | if (of_device_is_compatible(np, ab8500_cell.of_compatible)) { |
2980 | ab850x_cell = &ab8500_cell; | |
f864c46a | 2981 | break; |
1c0769d2 SG |
2982 | } |
2983 | if (of_device_is_compatible(np, ab8505_cell.of_compatible)) { | |
2984 | ab850x_cell = &ab8505_cell; | |
2985 | break; | |
2986 | } | |
f864c46a LW |
2987 | } |
2988 | if (!np) { | |
1c0769d2 | 2989 | dev_info(parent, "could not find AB850X node in the device tree\n"); |
f864c46a LW |
2990 | return -ENODEV; |
2991 | } | |
1c0769d2 | 2992 | of_irq_to_resource_table(np, &ab850x_resource, 1); |
f864c46a | 2993 | |
1c0769d2 | 2994 | return mfd_add_devices(parent, 0, ab850x_cell, 1, NULL, 0, NULL); |
55b175d7 AB |
2995 | } |
2996 | ||
f791be49 | 2997 | static int db8500_prcmu_probe(struct platform_device *pdev) |
3df57bcf | 2998 | { |
ca7edd16 | 2999 | struct device_node *np = pdev->dev.of_node; |
55b175d7 | 3000 | int irq = 0, err = 0; |
05ec260e | 3001 | struct resource *res; |
3df57bcf | 3002 | |
b047d981 LW |
3003 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "prcmu"); |
3004 | if (!res) { | |
3005 | dev_err(&pdev->dev, "no prcmu memory region provided\n"); | |
6bdf891a | 3006 | return -EINVAL; |
b047d981 LW |
3007 | } |
3008 | prcmu_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); | |
3009 | if (!prcmu_base) { | |
3010 | dev_err(&pdev->dev, | |
3011 | "failed to ioremap prcmu register memory\n"); | |
6bdf891a | 3012 | return -ENOMEM; |
b047d981 | 3013 | } |
0508901c | 3014 | init_prcm_registers(); |
05ec260e LW |
3015 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "prcmu-tcdm"); |
3016 | if (!res) { | |
3017 | dev_err(&pdev->dev, "no prcmu tcdm region provided\n"); | |
6bdf891a | 3018 | return -EINVAL; |
05ec260e LW |
3019 | } |
3020 | tcdm_base = devm_ioremap(&pdev->dev, res->start, | |
3021 | resource_size(res)); | |
51a7e02b PG |
3022 | if (!tcdm_base) { |
3023 | dev_err(&pdev->dev, | |
3024 | "failed to ioremap prcmu-tcdm register memory\n"); | |
6bdf891a | 3025 | return -ENOMEM; |
51a7e02b | 3026 | } |
05ec260e | 3027 | |
e3726fcf | 3028 | /* Clean up the mailbox interrupts after pre-kernel code. */ |
c553b3ca | 3029 | writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR); |
3df57bcf | 3030 | |
05ec260e | 3031 | irq = platform_get_irq(pdev, 0); |
802d9bd4 | 3032 | if (irq <= 0) |
6bdf891a | 3033 | return irq; |
ca7edd16 LJ |
3034 | |
3035 | err = request_threaded_irq(irq, prcmu_irq_handler, | |
3036 | prcmu_irq_thread_fn, IRQF_NO_SUSPEND, "prcmu", NULL); | |
3df57bcf MN |
3037 | if (err < 0) { |
3038 | pr_err("prcmu: Failed to allocate IRQ_DB8500_PRCMU1.\n"); | |
6bdf891a | 3039 | return err; |
3df57bcf MN |
3040 | } |
3041 | ||
f864c46a | 3042 | db8500_irq_init(np); |
3a8e39c9 | 3043 | |
7a4f2609 | 3044 | prcmu_config_esram0_deep_sleep(ESRAM0_DEEP_SLEEP_STATE_RET); |
3df57bcf | 3045 | |
d98a5384 LJ |
3046 | err = mfd_add_devices(&pdev->dev, 0, common_prcmu_devs, |
3047 | ARRAY_SIZE(common_prcmu_devs), NULL, 0, db8500_irq_domain); | |
5d90322b LJ |
3048 | if (err) { |
3049 | pr_err("prcmu: Failed to add subdevices\n"); | |
3050 | return err; | |
ca7edd16 | 3051 | } |
e3726fcf | 3052 | |
d98a5384 LJ |
3053 | /* TODO: Remove restriction when clk definitions are available. */ |
3054 | if (!of_machine_is_compatible("st-ericsson,u8540")) { | |
3055 | err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs, | |
3056 | ARRAY_SIZE(db8500_prcmu_devs), NULL, 0, | |
3057 | db8500_irq_domain); | |
3058 | if (err) { | |
3059 | mfd_remove_devices(&pdev->dev); | |
3060 | pr_err("prcmu: Failed to add subdevices\n"); | |
6bdf891a | 3061 | return err; |
d98a5384 LJ |
3062 | } |
3063 | } | |
3064 | ||
4e657946 | 3065 | err = db8500_prcmu_register_ab8500(&pdev->dev); |
55b175d7 AB |
3066 | if (err) { |
3067 | mfd_remove_devices(&pdev->dev); | |
3068 | pr_err("prcmu: Failed to add ab8500 subdevice\n"); | |
6bdf891a | 3069 | return err; |
55b175d7 AB |
3070 | } |
3071 | ||
ca7edd16 | 3072 | pr_info("DB8500 PRCMU initialized\n"); |
3df57bcf MN |
3073 | return err; |
3074 | } | |
3c144762 LJ |
3075 | static const struct of_device_id db8500_prcmu_match[] = { |
3076 | { .compatible = "stericsson,db8500-prcmu"}, | |
3077 | { }, | |
3078 | }; | |
3df57bcf MN |
3079 | |
3080 | static struct platform_driver db8500_prcmu_driver = { | |
3081 | .driver = { | |
3082 | .name = "db8500-prcmu", | |
3c144762 | 3083 | .of_match_table = db8500_prcmu_match, |
3df57bcf | 3084 | }, |
9fc63f67 | 3085 | .probe = db8500_prcmu_probe, |
3df57bcf MN |
3086 | }; |
3087 | ||
3088 | static int __init db8500_prcmu_init(void) | |
3089 | { | |
9fc63f67 | 3090 | return platform_driver_register(&db8500_prcmu_driver); |
e3726fcf | 3091 | } |
a661aca4 | 3092 | core_initcall(db8500_prcmu_init); |