^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * SMBus driver for ACPI SMBus CMI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2009 Crane Cai <crane.cai@amd.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/stddef.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define ACPI_SMBUS_HC_CLASS "smbus"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define ACPI_SMBUS_HC_DEVICE_NAME "cmi"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* SMBUS HID definition as supported by Microsoft Windows */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define ACPI_SMBUS_MS_HID "SMB0001"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) ACPI_MODULE_NAME("smbus_cmi");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct smbus_methods_t {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) char *mt_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) char *mt_sbr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) char *mt_sbw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct acpi_smbus_cmi {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) acpi_handle handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct i2c_adapter adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) u8 cap_info:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) u8 cap_read:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) u8 cap_write:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct smbus_methods_t *methods;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static const struct smbus_methods_t smbus_methods = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) .mt_info = "_SBI",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .mt_sbr = "_SBR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .mt_sbw = "_SBW",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* Some IBM BIOSes omit the leading underscore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static const struct smbus_methods_t ibm_smbus_methods = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .mt_info = "SBI_",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .mt_sbr = "SBR_",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) .mt_sbw = "SBW_",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static const struct acpi_device_id acpi_smbus_cmi_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {"SMBUS01", (kernel_ulong_t)&smbus_methods},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {ACPI_SMBUS_IBM_HID, (kernel_ulong_t)&ibm_smbus_methods},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {ACPI_SMBUS_MS_HID, (kernel_ulong_t)&smbus_methods},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {"", 0}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MODULE_DEVICE_TABLE(acpi, acpi_smbus_cmi_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define ACPI_SMBUS_STATUS_OK 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define ACPI_SMBUS_STATUS_FAIL 0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define ACPI_SMBUS_STATUS_DNAK 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define ACPI_SMBUS_STATUS_DERR 0x11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define ACPI_SMBUS_STATUS_CMD_DENY 0x12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define ACPI_SMBUS_STATUS_UNKNOWN 0x13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define ACPI_SMBUS_STATUS_ACC_DENY 0x17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define ACPI_SMBUS_STATUS_TIMEOUT 0x18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define ACPI_SMBUS_STATUS_NOTSUP 0x19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define ACPI_SMBUS_STATUS_BUSY 0x1a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define ACPI_SMBUS_STATUS_PEC 0x1f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define ACPI_SMBUS_PRTCL_WRITE 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define ACPI_SMBUS_PRTCL_READ 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define ACPI_SMBUS_PRTCL_QUICK 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define ACPI_SMBUS_PRTCL_BYTE 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define ACPI_SMBUS_PRTCL_BYTE_DATA 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define ACPI_SMBUS_PRTCL_WORD_DATA 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define ACPI_SMBUS_PRTCL_BLOCK_DATA 0x0a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) acpi_smbus_cmi_access(struct i2c_adapter *adap, u16 addr, unsigned short flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) char read_write, u8 command, int size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) union i2c_smbus_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct acpi_smbus_cmi *smbus_cmi = adap->algo_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned char protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) acpi_status status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct acpi_object_list input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) union acpi_object mt_params[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) union acpi_object *pkg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) char *method;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) dev_dbg(&adap->dev, "access size: %d %s\n", size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) (read_write) ? "READ" : "WRITE");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) switch (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) case I2C_SMBUS_QUICK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) protocol = ACPI_SMBUS_PRTCL_QUICK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) command = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (read_write == I2C_SMBUS_WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) mt_params[3].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) mt_params[3].integer.value = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) mt_params[4].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) mt_params[4].integer.value = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) case I2C_SMBUS_BYTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) protocol = ACPI_SMBUS_PRTCL_BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (read_write == I2C_SMBUS_WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) mt_params[3].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) mt_params[3].integer.value = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) mt_params[4].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) mt_params[4].integer.value = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) command = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) case I2C_SMBUS_BYTE_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) protocol = ACPI_SMBUS_PRTCL_BYTE_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (read_write == I2C_SMBUS_WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) mt_params[3].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) mt_params[3].integer.value = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) mt_params[4].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) mt_params[4].integer.value = data->byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) case I2C_SMBUS_WORD_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) protocol = ACPI_SMBUS_PRTCL_WORD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (read_write == I2C_SMBUS_WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) mt_params[3].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) mt_params[3].integer.value = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) mt_params[4].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) mt_params[4].integer.value = data->word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) case I2C_SMBUS_BLOCK_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) protocol = ACPI_SMBUS_PRTCL_BLOCK_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (read_write == I2C_SMBUS_WRITE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) len = data->block[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (len == 0 || len > I2C_SMBUS_BLOCK_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) mt_params[3].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) mt_params[3].integer.value = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) mt_params[4].type = ACPI_TYPE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) mt_params[4].buffer.length = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) mt_params[4].buffer.pointer = data->block + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) dev_warn(&adap->dev, "Unsupported transaction %d\n", size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (read_write == I2C_SMBUS_READ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) protocol |= ACPI_SMBUS_PRTCL_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) method = smbus_cmi->methods->mt_sbr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) input.count = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) protocol |= ACPI_SMBUS_PRTCL_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) method = smbus_cmi->methods->mt_sbw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) input.count = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) input.pointer = mt_params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) mt_params[0].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) mt_params[0].integer.value = protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) mt_params[1].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) mt_params[1].integer.value = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) mt_params[2].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) mt_params[2].integer.value = command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) status = acpi_evaluate_object(smbus_cmi->handle, method, &input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) acpi_handle_err(smbus_cmi->handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) "Failed to evaluate %s: %i\n", method, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) pkg = buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (pkg && pkg->type == ACPI_TYPE_PACKAGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) obj = pkg->package.elements;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) acpi_handle_err(smbus_cmi->handle, "Invalid argument type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (obj == NULL || obj->type != ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) acpi_handle_err(smbus_cmi->handle, "Invalid argument type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) result = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) acpi_handle_debug(smbus_cmi->handle, "%s return status: %i\n", method,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) switch (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) case ACPI_SMBUS_STATUS_OK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) case ACPI_SMBUS_STATUS_BUSY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) result = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) case ACPI_SMBUS_STATUS_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) result = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) case ACPI_SMBUS_STATUS_DNAK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) result = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (read_write == I2C_SMBUS_WRITE || size == I2C_SMBUS_QUICK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) obj = pkg->package.elements + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (obj->type != ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) acpi_handle_err(smbus_cmi->handle, "Invalid argument type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) len = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) obj = pkg->package.elements + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) switch (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) case I2C_SMBUS_BYTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) case I2C_SMBUS_BYTE_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) case I2C_SMBUS_WORD_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (obj->type != ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) acpi_handle_err(smbus_cmi->handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) "Invalid argument type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) if (len == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) data->word = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) data->byte = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) case I2C_SMBUS_BLOCK_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (obj->type != ACPI_TYPE_BUFFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) acpi_handle_err(smbus_cmi->handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) "Invalid argument type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) result = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (len == 0 || len > I2C_SMBUS_BLOCK_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) data->block[0] = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) memcpy(data->block + 1, obj->buffer.pointer, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) kfree(buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) dev_dbg(&adap->dev, "Transaction status: %i\n", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static u32 acpi_smbus_cmi_func(struct i2c_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) struct acpi_smbus_cmi *smbus_cmi = adapter->algo_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) u32 ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ret = smbus_cmi->cap_read | smbus_cmi->cap_write ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) I2C_FUNC_SMBUS_QUICK : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) ret |= smbus_cmi->cap_read ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) (I2C_FUNC_SMBUS_READ_BYTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) I2C_FUNC_SMBUS_READ_BYTE_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) I2C_FUNC_SMBUS_READ_WORD_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) I2C_FUNC_SMBUS_READ_BLOCK_DATA) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ret |= smbus_cmi->cap_write ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) (I2C_FUNC_SMBUS_WRITE_BYTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) I2C_FUNC_SMBUS_WRITE_BYTE_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) I2C_FUNC_SMBUS_WRITE_WORD_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static const struct i2c_algorithm acpi_smbus_cmi_algorithm = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) .smbus_xfer = acpi_smbus_cmi_access,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) .functionality = acpi_smbus_cmi_func,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static int acpi_smbus_cmi_add_cap(struct acpi_smbus_cmi *smbus_cmi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct acpi_handle *handle = smbus_cmi->handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!strcmp(name, smbus_cmi->methods->mt_info)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) status = acpi_evaluate_object(smbus_cmi->handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) smbus_cmi->methods->mt_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) NULL, &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) acpi_handle_err(handle, "Failed to evaluate %s: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) smbus_cmi->methods->mt_info, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) obj = buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (obj && obj->type == ACPI_TYPE_PACKAGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) obj = obj->package.elements;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) acpi_handle_err(handle, "Invalid argument type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) kfree(buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (obj->type != ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) acpi_handle_err(handle, "Invalid argument type\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) kfree(buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) acpi_handle_debug(handle, "SMBus CMI Version %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) (int)obj->integer.value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) kfree(buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) smbus_cmi->cap_info = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) } else if (!strcmp(name, smbus_cmi->methods->mt_sbr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) smbus_cmi->cap_read = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) else if (!strcmp(name, smbus_cmi->methods->mt_sbw))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) smbus_cmi->cap_write = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) acpi_handle_debug(handle, "Unsupported CMI method: %s\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static acpi_status acpi_smbus_cmi_query_methods(acpi_handle handle, u32 level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) void *context, void **return_value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) char node_name[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) struct acpi_buffer buffer = { sizeof(node_name), node_name };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct acpi_smbus_cmi *smbus_cmi = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) status = acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (ACPI_SUCCESS(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) acpi_smbus_cmi_add_cap(smbus_cmi, node_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static int acpi_smbus_cmi_add(struct acpi_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) struct acpi_smbus_cmi *smbus_cmi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) const struct acpi_device_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) smbus_cmi = kzalloc(sizeof(struct acpi_smbus_cmi), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (!smbus_cmi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) smbus_cmi->handle = device->handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) strcpy(acpi_device_name(device), ACPI_SMBUS_HC_DEVICE_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) strcpy(acpi_device_class(device), ACPI_SMBUS_HC_CLASS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) device->driver_data = smbus_cmi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) smbus_cmi->cap_info = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) smbus_cmi->cap_read = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) smbus_cmi->cap_write = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) for (id = acpi_smbus_cmi_ids; id->id[0]; id++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (!strcmp(id->id, acpi_device_hid(device)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) smbus_cmi->methods =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) (struct smbus_methods_t *) id->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) acpi_walk_namespace(ACPI_TYPE_METHOD, smbus_cmi->handle, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) acpi_smbus_cmi_query_methods, NULL, smbus_cmi, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (smbus_cmi->cap_info == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) snprintf(smbus_cmi->adapter.name, sizeof(smbus_cmi->adapter.name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) "SMBus CMI adapter %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) acpi_device_name(device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) smbus_cmi->adapter.owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) smbus_cmi->adapter.algo = &acpi_smbus_cmi_algorithm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) smbus_cmi->adapter.algo_data = smbus_cmi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) smbus_cmi->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) smbus_cmi->adapter.dev.parent = &device->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) ret = i2c_add_adapter(&smbus_cmi->adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) dev_err(&device->dev, "Couldn't register adapter!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) kfree(smbus_cmi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) device->driver_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) static int acpi_smbus_cmi_remove(struct acpi_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) struct acpi_smbus_cmi *smbus_cmi = acpi_driver_data(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) i2c_del_adapter(&smbus_cmi->adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) kfree(smbus_cmi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) device->driver_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static struct acpi_driver acpi_smbus_cmi_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) .name = ACPI_SMBUS_HC_DEVICE_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) .class = ACPI_SMBUS_HC_CLASS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) .ids = acpi_smbus_cmi_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) .ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) .add = acpi_smbus_cmi_add,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) .remove = acpi_smbus_cmi_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) module_acpi_driver(acpi_smbus_cmi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) MODULE_AUTHOR("Crane Cai <crane.cai@amd.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) MODULE_DESCRIPTION("ACPI SMBus CMI driver");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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