1 /*
2 * AMD CS5535/CS5536 definitions
3 * Copyright (C) 2006 Advanced Micro Devices, Inc.
4 * Copyright (C) 2009 Andres Salomon <dilinger@collabora.co.uk>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of version 2 of the GNU General Public License
8 * as published by the Free Software Foundation.
9 */
10
11 #ifndef _CS5535_H
12 #define _CS5535_H
13
14 #include <asm/msr.h>
15
16 /* MSRs */
17 #define MSR_GLIU_P2D_RO0 0x10000029
18
19 #define MSR_LX_GLD_MSR_CONFIG 0x48002001
20 #define MSR_LX_MSR_PADSEL 0x48002011 /* NOT 0x48000011; the data
21 * sheet has the wrong value */
22 #define MSR_GLCP_SYS_RSTPLL 0x4C000014
23 #define MSR_GLCP_DOTPLL 0x4C000015
24
25 #define MSR_LBAR_SMB 0x5140000B
26 #define MSR_LBAR_GPIO 0x5140000C
27 #define MSR_LBAR_MFGPT 0x5140000D
28 #define MSR_LBAR_ACPI 0x5140000E
29 #define MSR_LBAR_PMS 0x5140000F
30
31 #define MSR_DIVIL_SOFT_RESET 0x51400017
32
33 #define MSR_PIC_YSEL_LOW 0x51400020
34 #define MSR_PIC_YSEL_HIGH 0x51400021
35 #define MSR_PIC_ZSEL_LOW 0x51400022
36 #define MSR_PIC_ZSEL_HIGH 0x51400023
37 #define MSR_PIC_IRQM_LPC 0x51400025
38
39 #define MSR_MFGPT_IRQ 0x51400028
40 #define MSR_MFGPT_NR 0x51400029
41 #define MSR_MFGPT_SETUP 0x5140002B
42
43 #define MSR_RTC_DOMA_OFFSET 0x51400055
44 #define MSR_RTC_MONA_OFFSET 0x51400056
45 #define MSR_RTC_CEN_OFFSET 0x51400057
46
47 #define MSR_LX_SPARE_MSR 0x80000011 /* DC-specific */
48
49 #define MSR_GX_GLD_MSR_CONFIG 0xC0002001
50 #define MSR_GX_MSR_PADSEL 0xC0002011
51
cs5535_pic_unreqz_select_high(unsigned int group,unsigned int irq)52 static inline int cs5535_pic_unreqz_select_high(unsigned int group,
53 unsigned int irq)
54 {
55 uint32_t lo, hi;
56
57 rdmsr(MSR_PIC_ZSEL_HIGH, lo, hi);
58 lo &= ~(0xF << (group * 4));
59 lo |= (irq & 0xF) << (group * 4);
60 wrmsr(MSR_PIC_ZSEL_HIGH, lo, hi);
61 return 0;
62 }
63
64 /* PIC registers */
65 #define CS5536_PIC_INT_SEL1 0x4d0
66 #define CS5536_PIC_INT_SEL2 0x4d1
67
68 /* resource sizes */
69 #define LBAR_GPIO_SIZE 0xFF
70 #define LBAR_MFGPT_SIZE 0x40
71 #define LBAR_ACPI_SIZE 0x40
72 #define LBAR_PMS_SIZE 0x80
73
74 /*
75 * PMC registers (PMS block)
76 * It is only safe to access these registers as dword accesses.
77 * See CS5536 Specification Update erratas 17 & 18
78 */
79 #define CS5536_PM_SCLK 0x10
80 #define CS5536_PM_IN_SLPCTL 0x20
81 #define CS5536_PM_WKXD 0x34
82 #define CS5536_PM_WKD 0x30
83 #define CS5536_PM_SSC 0x54
84
85 /*
86 * PM registers (ACPI block)
87 * It is only safe to access these registers as dword accesses.
88 * See CS5536 Specification Update erratas 17 & 18
89 */
90 #define CS5536_PM1_STS 0x00
91 #define CS5536_PM1_EN 0x02
92 #define CS5536_PM1_CNT 0x08
93 #define CS5536_PM_GPE0_STS 0x18
94 #define CS5536_PM_GPE0_EN 0x1c
95
96 /* CS5536_PM1_STS bits */
97 #define CS5536_WAK_FLAG (1 << 15)
98 #define CS5536_PWRBTN_FLAG (1 << 8)
99
100 /* CS5536_PM1_EN bits */
101 #define CS5536_PM_PWRBTN (1 << 8)
102 #define CS5536_PM_RTC (1 << 10)
103
104 /* CS5536_PM_GPE0_STS bits */
105 #define CS5536_GPIOM7_PME_FLAG (1 << 31)
106 #define CS5536_GPIOM6_PME_FLAG (1 << 30)
107
108 /* CS5536_PM_GPE0_EN bits */
109 #define CS5536_GPIOM7_PME_EN (1 << 31)
110 #define CS5536_GPIOM6_PME_EN (1 << 30)
111
112 /* VSA2 magic values */
113 #define VSA_VRC_INDEX 0xAC1C
114 #define VSA_VRC_DATA 0xAC1E
115 #define VSA_VR_UNLOCK 0xFC53 /* unlock virtual register */
116 #define VSA_VR_SIGNATURE 0x0003
117 #define VSA_VR_MEM_SIZE 0x0200
118 #define AMD_VSA_SIG 0x4132 /* signature is ascii 'VSA2' */
119 #define GSW_VSA_SIG 0x534d /* General Software signature */
120
121 #include <linux/io.h>
122
cs5535_has_vsa2(void)123 static inline int cs5535_has_vsa2(void)
124 {
125 static int has_vsa2 = -1;
126
127 if (has_vsa2 == -1) {
128 uint16_t val;
129
130 /*
131 * The VSA has virtual registers that we can query for a
132 * signature.
133 */
134 outw(VSA_VR_UNLOCK, VSA_VRC_INDEX);
135 outw(VSA_VR_SIGNATURE, VSA_VRC_INDEX);
136
137 val = inw(VSA_VRC_DATA);
138 has_vsa2 = (val == AMD_VSA_SIG || val == GSW_VSA_SIG);
139 }
140
141 return has_vsa2;
142 }
143
144 /* GPIOs */
145 #define GPIO_OUTPUT_VAL 0x00
146 #define GPIO_OUTPUT_ENABLE 0x04
147 #define GPIO_OUTPUT_OPEN_DRAIN 0x08
148 #define GPIO_OUTPUT_INVERT 0x0C
149 #define GPIO_OUTPUT_AUX1 0x10
150 #define GPIO_OUTPUT_AUX2 0x14
151 #define GPIO_PULL_UP 0x18
152 #define GPIO_PULL_DOWN 0x1C
153 #define GPIO_INPUT_ENABLE 0x20
154 #define GPIO_INPUT_INVERT 0x24
155 #define GPIO_INPUT_FILTER 0x28
156 #define GPIO_INPUT_EVENT_COUNT 0x2C
157 #define GPIO_READ_BACK 0x30
158 #define GPIO_INPUT_AUX1 0x34
159 #define GPIO_EVENTS_ENABLE 0x38
160 #define GPIO_LOCK_ENABLE 0x3C
161 #define GPIO_POSITIVE_EDGE_EN 0x40
162 #define GPIO_NEGATIVE_EDGE_EN 0x44
163 #define GPIO_POSITIVE_EDGE_STS 0x48
164 #define GPIO_NEGATIVE_EDGE_STS 0x4C
165
166 #define GPIO_FLTR7_AMOUNT 0xD8
167
168 #define GPIO_MAP_X 0xE0
169 #define GPIO_MAP_Y 0xE4
170 #define GPIO_MAP_Z 0xE8
171 #define GPIO_MAP_W 0xEC
172
173 #define GPIO_FE7_SEL 0xF7
174
175 void cs5535_gpio_set(unsigned offset, unsigned int reg);
176 void cs5535_gpio_clear(unsigned offset, unsigned int reg);
177 int cs5535_gpio_isset(unsigned offset, unsigned int reg);
178 int cs5535_gpio_set_irq(unsigned group, unsigned irq);
179 void cs5535_gpio_setup_event(unsigned offset, int pair, int pme);
180
181 /* MFGPTs */
182
183 #define MFGPT_MAX_TIMERS 8
184 #define MFGPT_TIMER_ANY (-1)
185
186 #define MFGPT_DOMAIN_WORKING 1
187 #define MFGPT_DOMAIN_STANDBY 2
188 #define MFGPT_DOMAIN_ANY (MFGPT_DOMAIN_WORKING | MFGPT_DOMAIN_STANDBY)
189
190 #define MFGPT_CMP1 0
191 #define MFGPT_CMP2 1
192
193 #define MFGPT_EVENT_IRQ 0
194 #define MFGPT_EVENT_NMI 1
195 #define MFGPT_EVENT_RESET 3
196
197 #define MFGPT_REG_CMP1 0
198 #define MFGPT_REG_CMP2 2
199 #define MFGPT_REG_COUNTER 4
200 #define MFGPT_REG_SETUP 6
201
202 #define MFGPT_SETUP_CNTEN (1 << 15)
203 #define MFGPT_SETUP_CMP2 (1 << 14)
204 #define MFGPT_SETUP_CMP1 (1 << 13)
205 #define MFGPT_SETUP_SETUP (1 << 12)
206 #define MFGPT_SETUP_STOPEN (1 << 11)
207 #define MFGPT_SETUP_EXTEN (1 << 10)
208 #define MFGPT_SETUP_REVEN (1 << 5)
209 #define MFGPT_SETUP_CLKSEL (1 << 4)
210
211 struct cs5535_mfgpt_timer;
212
213 extern uint16_t cs5535_mfgpt_read(struct cs5535_mfgpt_timer *timer,
214 uint16_t reg);
215 extern void cs5535_mfgpt_write(struct cs5535_mfgpt_timer *timer, uint16_t reg,
216 uint16_t value);
217
218 extern int cs5535_mfgpt_toggle_event(struct cs5535_mfgpt_timer *timer, int cmp,
219 int event, int enable);
220 extern int cs5535_mfgpt_set_irq(struct cs5535_mfgpt_timer *timer, int cmp,
221 int *irq, int enable);
222 extern struct cs5535_mfgpt_timer *cs5535_mfgpt_alloc_timer(int timer,
223 int domain);
224 extern void cs5535_mfgpt_free_timer(struct cs5535_mfgpt_timer *timer);
225
cs5535_mfgpt_setup_irq(struct cs5535_mfgpt_timer * timer,int cmp,int * irq)226 static inline int cs5535_mfgpt_setup_irq(struct cs5535_mfgpt_timer *timer,
227 int cmp, int *irq)
228 {
229 return cs5535_mfgpt_set_irq(timer, cmp, irq, 1);
230 }
231
cs5535_mfgpt_release_irq(struct cs5535_mfgpt_timer * timer,int cmp,int * irq)232 static inline int cs5535_mfgpt_release_irq(struct cs5535_mfgpt_timer *timer,
233 int cmp, int *irq)
234 {
235 return cs5535_mfgpt_set_irq(timer, cmp, irq, 0);
236 }
237
238 #endif
239