include/linux/cs5535.h

   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
  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
 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
 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
 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