arch/x86/include/asm/intel_scu_ipc_legacy.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_INTEL_SCU_IPC_LEGACY_H_
   3 #define _ASM_X86_INTEL_SCU_IPC_LEGACY_H_
   4
   5 #include <linux/notifier.h>
   6
   7 #define IPCMSG_INDIRECT_READ    0x02
   8 #define IPCMSG_INDIRECT_WRITE   0x05
   9
  10 #define IPCMSG_COLD_OFF         0x80    /* Only for Tangier */
  11
  12 #define IPCMSG_WARM_RESET       0xF0
  13 #define IPCMSG_COLD_RESET       0xF1
  14 #define IPCMSG_SOFT_RESET       0xF2
  15 #define IPCMSG_COLD_BOOT        0xF3
  16
  17 #define IPCMSG_VRTC             0xFA    /* Set vRTC device */
  18 /* Command id associated with message IPCMSG_VRTC */
  19 #define IPC_CMD_VRTC_SETTIME      1     /* Set time */
  20 #define IPC_CMD_VRTC_SETALARM     2     /* Set alarm */
  21
  22 /* Don't call these in new code - they will be removed eventually */
  23
  24 /* Read single register */
  25 static inline int intel_scu_ipc_ioread8(u16 addr, u8 *data)
  26 {
  27         return intel_scu_ipc_dev_ioread8(NULL, addr, data);
  28 }
  29
  30 /* Read a vector */
  31 static inline int intel_scu_ipc_readv(u16 *addr, u8 *data, int len)
  32 {
  33         return intel_scu_ipc_dev_readv(NULL, addr, data, len);
  34 }
  35
  36 /* Write single register */
  37 static inline int intel_scu_ipc_iowrite8(u16 addr, u8 data)
  38 {
  39         return intel_scu_ipc_dev_iowrite8(NULL, addr, data);
  40 }
  41
  42 /* Write a vector */
  43 static inline int intel_scu_ipc_writev(u16 *addr, u8 *data, int len)
  44 {
  45         return intel_scu_ipc_dev_writev(NULL, addr, data, len);
  46 }
  47
  48 /* Update single register based on the mask */
  49 static inline int intel_scu_ipc_update_register(u16 addr, u8 data, u8 mask)
  50 {
  51         return intel_scu_ipc_dev_update(NULL, addr, data, mask);
  52 }
  53
  54 /* Issue commands to the SCU with or without data */
  55 static inline int intel_scu_ipc_simple_command(int cmd, int sub)
  56 {
  57         return intel_scu_ipc_dev_simple_command(NULL, cmd, sub);
  58 }
  59
  60 static inline int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,
  61                                         u32 *out, int outlen)
  62 {
  63         /* New API takes both inlen and outlen as bytes so convert here */
  64         size_t inbytes = inlen * sizeof(u32);
  65         size_t outbytes = outlen * sizeof(u32);
  66
  67         return intel_scu_ipc_dev_command_with_size(NULL, cmd, sub, in, inbytes,
  68                                                    inlen, out, outbytes);
  69 }
  70
  71 extern struct blocking_notifier_head intel_scu_notifier;
  72
  73 static inline void intel_scu_notifier_add(struct notifier_block *nb)
  74 {
  75         blocking_notifier_chain_register(&intel_scu_notifier, nb);
  76 }
  77
  78 static inline void intel_scu_notifier_remove(struct notifier_block *nb)
  79 {
  80         blocking_notifier_chain_unregister(&intel_scu_notifier, nb);
  81 }
  82
  83 static inline int intel_scu_notifier_post(unsigned long v, void *p)
  84 {
  85         return blocking_notifier_call_chain(&intel_scu_notifier, v, p);
  86 }
  87
  88 #define         SCU_AVAILABLE           1
  89 #define         SCU_DOWN                2
  90
  91 #endif