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sonic-buildimage/platform/broadcom/sonic-platform-modules-ufispace/s8901-54xc/modules/x86-64-ufispace-s8901-54xc-lpc.c
Nonodark Huang 1acafa4873
[Ufispace][PDDF] Add PDDF support on S9110-32X, S8901-54XC, S7801-54XS and S6301-56ST (#16017) 
Why I did it
Add PDDF support on following Ufispace platforms with Broadcom ASIC

S9110-32X
S8901-54XC
S7801-54XS
S6301-56ST
How I did it
Add PDDF configuration files, scripts and python files

How to verify it
Run pddf commands and show commands.

Signed-off-by: nonodark <ef67891@yahoo.com.tw>
2023-08-14 15:56:03 -07:00

884 lines
24 KiB
C
Raw Blame History

/*
* A lpc driver for the ufispace_s8901_54xc
*
* Copyright (C) 2017-2022 UfiSpace Technology Corporation.
* Jason Tsai <jason.cy.tsai@ufispace.com>
*
* Based on ad7414.c
* Copyright 2006 Stefan Roese <sr at denx.de>, DENX Software Engineering
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/hwmon-sysfs.h>
#include <linux/gpio.h>
#define BSP_LOG_R(fmt, args...) \
_bsp_log (LOG_READ, KERN_INFO "%s:%s[%d]: " fmt "\r\n", \
__FILE__, __func__, __LINE__, ##args)
#define BSP_LOG_W(fmt, args...) \
_bsp_log (LOG_WRITE, KERN_INFO "%s:%s[%d]: " fmt "\r\n", \
__FILE__, __func__, __LINE__, ##args)
#define BSP_PR(level, fmt, args...) _bsp_log (LOG_SYS, level "[BSP]" fmt "\r\n", ##args)
#define _SENSOR_DEVICE_ATTR_RO(_name, _func, _index) \
SENSOR_DEVICE_ATTR(_name, S_IRUGO, read_##_func, NULL, _index)
#define _SENSOR_DEVICE_ATTR_WO(_name, _func, _index) \
SENSOR_DEVICE_ATTR(_name, S_IWUSR, NULL, write_##_func, _index)
#define _SENSOR_DEVICE_ATTR_RW(_name, _func, _index) \
SENSOR_DEVICE_ATTR(_name, S_IRUGO | S_IWUSR, read_##_func, write_##_func, _index)
#define _DEVICE_ATTR(_name) \
&sensor_dev_attr_##_name.dev_attr.attr
#define BSP_PR(level, fmt, args...) _bsp_log (LOG_SYS, level "[BSP]" fmt "\r\n", ##args)
#define DRIVER_NAME "x86_64_ufispace_s8901_54xc_lpc"
/* LPC registers */
#define REG_BASE_MB 0x700
#define REG_BASE_EC 0xE300
#define REG_NONE 0x00
//MB CPLD
#define REG_BRD_ID_0 (REG_BASE_MB + 0x00)
#define REG_BRD_ID_1 (REG_BASE_MB + 0x01)
#define REG_CPLD_VERSION (REG_BASE_MB + 0x02)
#define REG_CPLD_ID (REG_BASE_MB + 0x03)
#define REG_CPLD_BUILD (REG_BASE_MB + 0x04)
#define REG_CPLD_CHIP (REG_BASE_MB + 0x05)
#define REG_BRD_EXT_ID (REG_BASE_MB + 0x06)
#define REG_I2C_MUX_RESET (REG_BASE_MB + 0x46)
#define REG_I2C_MUX_RESET_2 (REG_BASE_MB + 0x47)
#define REG_MUX_CTRL (REG_BASE_MB + 0x5C)
#define REG_MISC_CTRL (REG_BASE_MB + 0x5D)
#define REG_MISC_CTRL_2 (REG_BASE_MB + 0x5E)
//EC
#define REG_BIOS_BOOT (REG_BASE_EC + 0x0C)
#define REG_CPU_REV (REG_BASE_EC + 0x17)
// BMC mailbox
#define REG_TEMP_MAC_HWM (REG_BASE_MB + 0xC0)
//MASK
#define MASK_ALL (0xFF)
#define MASK_CPLD_MAJOR_VER (0b11000000)
#define MASK_CPLD_MINOR_VER (0b00111111)
#define MASK_HW_ID (0b00000011)
#define MASK_DEPH_ID (0b00000100)
#define MASK_BUILD_ID (0b00011000)
#define MASK_EXT_ID (0b00000111)
#define MASK_MUX_RESET_ALL (0x37) // 2#00110111
#define MASK_MUX_RESET (MASK_ALL)
#define MASK_BIOS_BOOT_ROM (0b01000000)
#define LPC_MDELAY (5)
#define MDELAY_RESET_INTERVAL (100)
#define MDELAY_RESET_FINISH (500)
/* LPC sysfs attributes index */
enum lpc_sysfs_attributes {
//MB CPLD
ATT_BRD_ID_0,
ATT_BRD_ID_1,
ATT_BRD_SKU_ID,
ATT_BRD_HW_ID,
ATT_BRD_DEPH_ID,
ATT_BRD_BUILD_ID,
ATT_BRD_EXT_ID,
ATT_CPLD_ID,
ATT_CPLD_BUILD,
ATT_CPLD_CHIP,
ATT_CPLD_VERSION_MAJOR,
ATT_CPLD_VERSION_MINOR,
ATT_CPLD_VERSION_BUILD,
ATT_CPLD_VERSION_H,
ATT_MUX_RESET,
ATT_MUX_CTRL,
//EC
ATT_CPU_HW_ID,
ATT_CPU_DEPH_ID,
ATT_CPU_BUILD_ID,
ATT_BIOS_BOOT_ROM,
//BMC mailbox
ATT_TEMP_MAC_HWM,
//BSP
ATT_BSP_VERSION,
ATT_BSP_DEBUG,
ATT_BSP_PR_INFO,
ATT_BSP_PR_ERR,
ATT_BSP_REG,
ATT_BSP_GPIO_MAX,
ATT_MAX
};
enum data_type {
DATA_HEX,
DATA_DEC,
DATA_S_DEC,
DATA_UNK,
};
enum bsp_log_types {
LOG_NONE,
LOG_RW,
LOG_READ,
LOG_WRITE,
LOG_SYS
};
enum bsp_log_ctrl {
LOG_DISABLE,
LOG_ENABLE
};
struct lpc_data_s {
struct mutex access_lock;
};
typedef struct sysfs_info_s
{
u16 reg;
u8 mask;
u8 data_type;
} sysfs_info_t;
static sysfs_info_t sysfs_info[] = {
[ATT_BRD_ID_0] = {REG_BRD_ID_0, MASK_ALL, DATA_HEX},
[ATT_BRD_ID_1] = {REG_BRD_ID_1, MASK_ALL, DATA_HEX},
[ATT_BRD_SKU_ID] = {REG_BRD_ID_0, MASK_ALL, DATA_DEC},
[ATT_BRD_HW_ID] = {REG_BRD_ID_1, MASK_HW_ID, DATA_DEC},
[ATT_BRD_DEPH_ID] = {REG_BRD_ID_1, MASK_DEPH_ID, DATA_DEC},
[ATT_BRD_BUILD_ID] = {REG_BRD_ID_1, MASK_BUILD_ID, DATA_DEC},
[ATT_BRD_EXT_ID] = {REG_BRD_EXT_ID, MASK_EXT_ID, DATA_DEC},
[ATT_CPLD_ID] = {REG_CPLD_ID, MASK_ALL, DATA_DEC},
[ATT_CPLD_BUILD] = {REG_CPLD_BUILD, MASK_ALL, DATA_DEC},
[ATT_CPLD_CHIP] = {REG_CPLD_CHIP, MASK_ALL, DATA_DEC},
[ATT_CPLD_VERSION_MAJOR] = {REG_CPLD_VERSION, MASK_CPLD_MAJOR_VER, DATA_DEC},
[ATT_CPLD_VERSION_MINOR] = {REG_CPLD_VERSION, MASK_CPLD_MINOR_VER, DATA_DEC},
[ATT_CPLD_VERSION_BUILD] = {REG_CPLD_BUILD, MASK_ALL, DATA_DEC},
[ATT_CPLD_VERSION_H] = {REG_CPLD_VERSION, MASK_ALL, DATA_UNK},
[ATT_MUX_RESET] = {REG_NONE, MASK_ALL, DATA_DEC},
[ATT_MUX_CTRL] = {REG_MUX_CTRL, MASK_ALL, DATA_HEX},
//EC
[ATT_CPU_HW_ID] = {REG_CPU_REV, MASK_HW_ID, DATA_DEC},
[ATT_CPU_DEPH_ID] = {REG_CPU_REV, MASK_DEPH_ID, DATA_DEC},
[ATT_CPU_BUILD_ID] = {REG_CPU_REV, MASK_BUILD_ID, DATA_DEC},
[ATT_BIOS_BOOT_ROM] = {REG_BIOS_BOOT, MASK_BIOS_BOOT_ROM, DATA_DEC},
//BMC mailbox
[ATT_TEMP_MAC_HWM] = {REG_TEMP_MAC_HWM , MASK_ALL, DATA_S_DEC},
//BSP
[ATT_BSP_VERSION] = {REG_NONE, MASK_ALL, DATA_UNK},
[ATT_BSP_DEBUG] = {REG_NONE, MASK_ALL, DATA_UNK},
[ATT_BSP_PR_INFO] = {REG_NONE, MASK_ALL, DATA_UNK},
[ATT_BSP_PR_ERR] = {REG_NONE, MASK_ALL, DATA_UNK},
[ATT_BSP_REG] = {REG_NONE, MASK_ALL, DATA_HEX},
};
struct lpc_data_s *lpc_data;
char bsp_version[16]="";
char bsp_debug[2]="0";
char bsp_reg[8]="0x0";
u8 enable_log_read = LOG_DISABLE;
u8 enable_log_write = LOG_DISABLE;
u8 enable_log_sys = LOG_ENABLE;
u8 mailbox_inited=0;
/* reg shift */
static u8 _shift(u8 mask)
{
int i=0, mask_one=1;
for(i=0; i<8; ++i) {
if ((mask & mask_one) == 1)
return i;
else
mask >>= 1;
}
return -1;
}
/* reg mask and shift */
static u8 _mask_shift(u8 val, u8 mask)
{
int shift=0;
shift = _shift(mask);
return (val & mask) >> shift;
}
static u8 _parse_data(char *buf, unsigned int data, u8 data_type)
{
if(buf == NULL) {
return -1;
}
if(data_type == DATA_HEX) {
return sprintf(buf, "0x%02x", data);
} else if(data_type == DATA_DEC) {
return sprintf(buf, "%u", data);
} else {
return -1;
}
return 0;
}
static int _bsp_log(u8 log_type, char *fmt, ...)
{
if ((log_type==LOG_READ && enable_log_read) ||
(log_type==LOG_WRITE && enable_log_write) ||
(log_type==LOG_SYS && enable_log_sys) ) {
va_list args;
int r;
va_start(args, fmt);
r = vprintk(fmt, args);
va_end(args);
return r;
} else {
return 0;
}
}
static int _config_bsp_log(u8 log_type)
{
switch(log_type) {
case LOG_NONE:
enable_log_read = LOG_DISABLE;
enable_log_write = LOG_DISABLE;
break;
case LOG_RW:
enable_log_read = LOG_ENABLE;
enable_log_write = LOG_ENABLE;
break;
case LOG_READ:
enable_log_read = LOG_ENABLE;
enable_log_write = LOG_DISABLE;
break;
case LOG_WRITE:
enable_log_read = LOG_DISABLE;
enable_log_write = LOG_ENABLE;
break;
default:
return -EINVAL;
}
return 0;
}
static void _outb(u8 data, u16 port)
{
outb(data, port);
mdelay(LPC_MDELAY);
}
/* init bmc mailbox, get from BMC team */
static int bmc_mailbox_init(void)
{
if (mailbox_inited) {
return mailbox_inited;
}
//Enable super io writing
_outb(0xa5, 0x2e);
_outb(0xa5, 0x2e);
//Logic device number
_outb(0x07, 0x2e);
_outb(0x0e, 0x2f);
//Disable mailbox
_outb(0x30, 0x2e);
_outb(0x00, 0x2f);
//Set base address bit
_outb(0x60, 0x2e);
_outb(0x07, 0x2f);
_outb(0x61, 0x2e);
_outb(0xc0, 0x2f);
//Select bit[3:0] of SIRQ
_outb(0x70, 0x2e);
_outb(0x07, 0x2f);
//Low level trigger
_outb(0x71, 0x2e);
_outb(0x01, 0x2f);
//Enable mailbox
_outb(0x30, 0x2e);
_outb(0x01, 0x2f);
//Disable super io writing
_outb(0xaa, 0x2e);
//Mailbox initial
_outb(0x00, 0x786);
_outb(0x00, 0x787);
//set mailbox_inited
mailbox_inited = 1;
return mailbox_inited;
}
/* get lpc register value */
static u8 _read_lpc_reg(u16 reg, u8 mask)
{
u8 reg_val=0x0, reg_mk_shf_val = 0x0;
mutex_lock(&lpc_data->access_lock);
reg_val = inb(reg);
mutex_unlock(&lpc_data->access_lock);
reg_mk_shf_val = _mask_shift(reg_val, mask);
BSP_LOG_R("reg=0x%03x, reg_val=0x%02x, mask=0x%02x, reg_mk_shf_val=0x%02x", reg, reg_val, mask, reg_mk_shf_val);
return reg_mk_shf_val;
}
/* get lpc register value */
static ssize_t read_lpc_reg(u16 reg, u8 mask, char *buf, u8 data_type)
{
u8 reg_val;
int len=0;
reg_val = _read_lpc_reg(reg, mask);
// may need to change to hex value ?
len=_parse_data(buf, reg_val, data_type);
return len;
}
/* set lpc register value */
static ssize_t write_lpc_reg(u16 reg, u8 mask, const char *buf, size_t count, u8 data_type)
{
u8 reg_val, reg_val_now, shift;
if (kstrtou8(buf, 0, &reg_val) < 0) {
if(data_type == DATA_S_DEC) {
if (kstrtos8(buf, 0, &reg_val) < 0) {
return -EINVAL;
}
} else {
return -EINVAL;
}
}
//apply continuous bits operation if mask is specified, discontinuous bits are not supported
if (mask != MASK_ALL) {
reg_val_now = _read_lpc_reg(reg, MASK_ALL);
//clear bits in reg_val_now by the mask
reg_val_now &= ~mask;
//get bit shift by the mask
shift = _shift(mask);
//calculate new reg_val
reg_val = reg_val_now | (reg_val << shift);
}
mutex_lock(&lpc_data->access_lock);
_outb(reg_val, reg);
mutex_unlock(&lpc_data->access_lock);
BSP_LOG_W("reg=0x%03x, reg_val=0x%02x, mask=0x%02x", reg, reg_val, mask);
return count;
}
/* get bsp value */
static ssize_t read_bsp(char *buf, char *str)
{
ssize_t len=0;
mutex_lock(&lpc_data->access_lock);
len=sprintf(buf, "%s", str);
mutex_unlock(&lpc_data->access_lock);
BSP_LOG_R("reg_val=%s", str);
return len;
}
/* set bsp value */
static ssize_t write_bsp(const char *buf, char *str, size_t str_len, size_t count)
{
mutex_lock(&lpc_data->access_lock);
snprintf(str, str_len, "%s", buf);
mutex_unlock(&lpc_data->access_lock);
BSP_LOG_W("reg_val=%s", str);
return count;
}
/* get gpio max value */
static ssize_t read_gpio_max(struct device *dev,
struct device_attribute *da,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
if (attr->index == ATT_BSP_GPIO_MAX) {
return sprintf(buf, "%d\n", ARCH_NR_GPIOS-1);
}
return -1;
}
/* get mb cpld version in human readable format */
static ssize_t read_mb_cpld_version_h(struct device *dev,
struct device_attribute *da, char *buf)
{
ssize_t len=0;
u8 major = 0, minor = 0, build = 0;
major = _read_lpc_reg(REG_CPLD_VERSION, MASK_CPLD_MAJOR_VER);
minor = _read_lpc_reg(REG_CPLD_VERSION, MASK_CPLD_MINOR_VER);
build = _read_lpc_reg(REG_CPLD_BUILD, MASK_ALL);
len=sprintf(buf, "%u.%02u.%03u", major, minor, build);
return len;
}
/* get lpc register value */
static ssize_t read_lpc_callback(struct device *dev,
struct device_attribute *da, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
u16 reg = 0;
u8 mask = MASK_ALL;
u8 data_type = DATA_UNK;
if (attr->index == ATT_BSP_REG) {
//copy value from bsp_reg
if (kstrtou16(bsp_reg, 0, &reg) < 0)
return -EINVAL;
data_type = sysfs_info[attr->index].data_type;
} else {
reg = sysfs_info[attr->index].reg;
mask = sysfs_info[attr->index].mask;
data_type = sysfs_info[attr->index].data_type;
}
return read_lpc_reg(reg, mask, buf, data_type);
}
/* set lpc register value */
static ssize_t write_lpc_callback(struct device *dev,
struct device_attribute *da, const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
u16 reg = 0;
u8 mask = MASK_ALL;
u8 data_type = DATA_UNK;
reg = sysfs_info[attr->index].reg;
mask = sysfs_info[attr->index].mask;
data_type = sysfs_info[attr->index].data_type;
if(attr->index == ATT_TEMP_MAC_HWM) {
bmc_mailbox_init();
}
return write_lpc_reg(reg, mask, buf, count, data_type);
}
/* get bsp parameter value */
static ssize_t read_bsp_callback(struct device *dev,
struct device_attribute *da, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
char *str=NULL;
switch (attr->index) {
case ATT_BSP_VERSION:
str = bsp_version;
break;
case ATT_BSP_DEBUG:
str = bsp_debug;
break;
case ATT_BSP_REG:
str = bsp_reg;
break;
default:
return -EINVAL;
}
return read_bsp(buf, str);
}
/* set bsp parameter value */
static ssize_t write_bsp_callback(struct device *dev,
struct device_attribute *da, const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int str_len=0;
char *str=NULL;
u16 reg = 0;
u8 bsp_debug_u8 = 0;
switch (attr->index) {
case ATT_BSP_VERSION:
str = bsp_version;
str_len = sizeof(bsp_version);
break;
case ATT_BSP_DEBUG:
str = bsp_debug;
str_len = sizeof(bsp_debug);
break;
case ATT_BSP_REG:
if (kstrtou16(buf, 0, &reg) < 0)
return -EINVAL;
str = bsp_reg;
str_len = sizeof(bsp_reg);
break;
default:
return -EINVAL;
}
if (attr->index == ATT_BSP_DEBUG) {
if (kstrtou8(buf, 0, &bsp_debug_u8) < 0) {
return -EINVAL;
} else if (_config_bsp_log(bsp_debug_u8) < 0) {
return -EINVAL;
}
}
return write_bsp(buf, str, str_len, count);
}
static ssize_t write_bsp_pr_callback(struct device *dev,
struct device_attribute *da, const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int str_len = strlen(buf);
if(str_len <= 0)
return str_len;
switch (attr->index) {
case ATT_BSP_PR_INFO:
BSP_PR(KERN_INFO, "%s", buf);
break;
case ATT_BSP_PR_ERR:
BSP_PR(KERN_ERR, "%s", buf);
break;
default:
return -EINVAL;
}
return str_len;
}
/* set mux_reset register value */
static ssize_t write_mux_reset(struct device *dev,
struct device_attribute *da, const char *buf, size_t count)
{
u16 reg = REG_I2C_MUX_RESET;
u8 val = 0;
u8 mux_reset_reg_val = 0;
static int mux_reset_flag = 0;
if (kstrtou8(buf, 0, &val) < 0)
return -EINVAL;
if (mux_reset_flag == 0) {
if (val == 0) {
mutex_lock(&lpc_data->access_lock);
mux_reset_flag = 1;
BSP_LOG_W("i2c mux reset is triggered...");
//reset mux on SFP/QSFP ports
mux_reset_reg_val = inb(reg);
_outb((mux_reset_reg_val & (u8) (~MASK_MUX_RESET)), reg);
BSP_LOG_W("reg=0x%03x, reg_val=0x%02x", reg, mux_reset_reg_val & 0x0);
//unset mux on SFP/QSFP ports
outb((mux_reset_reg_val | MASK_MUX_RESET), reg);
mdelay(500);
BSP_LOG_W("reg=0x%03x, reg_val=0x%02x", reg, mux_reset_reg_val | 0xFF);
mux_reset_flag = 0;
mutex_unlock(&lpc_data->access_lock);
} else {
return -EINVAL;
}
} else {
BSP_LOG_W("i2c mux is resetting... (ignore)");
mutex_lock(&lpc_data->access_lock);
mutex_unlock(&lpc_data->access_lock);
}
return count;
}
//SENSOR_DEVICE_ATTR - MB
static _SENSOR_DEVICE_ATTR_RO(board_id_0, lpc_callback, ATT_BRD_ID_0);
static _SENSOR_DEVICE_ATTR_RO(board_id_1, lpc_callback, ATT_BRD_ID_1);
static _SENSOR_DEVICE_ATTR_RO(board_sku_id, lpc_callback, ATT_BRD_SKU_ID);
static _SENSOR_DEVICE_ATTR_RO(board_hw_id, lpc_callback, ATT_BRD_HW_ID);
static _SENSOR_DEVICE_ATTR_RO(board_deph_id, lpc_callback, ATT_BRD_DEPH_ID);
static _SENSOR_DEVICE_ATTR_RO(board_build_id, lpc_callback, ATT_BRD_BUILD_ID);
static _SENSOR_DEVICE_ATTR_RO(board_ext_id, lpc_callback, ATT_BRD_EXT_ID);
static _SENSOR_DEVICE_ATTR_RO(cpld_version_major, lpc_callback, ATT_CPLD_VERSION_MAJOR);
static _SENSOR_DEVICE_ATTR_RO(cpld_version_minor, lpc_callback, ATT_CPLD_VERSION_MINOR);
static _SENSOR_DEVICE_ATTR_RO(cpld_version_build, lpc_callback, ATT_CPLD_VERSION_BUILD);
static _SENSOR_DEVICE_ATTR_RO(cpld_version_h, mb_cpld_version_h, ATT_CPLD_VERSION_H);
static _SENSOR_DEVICE_ATTR_RO(cpld_id, lpc_callback, ATT_CPLD_ID);
static _SENSOR_DEVICE_ATTR_WO(mux_reset, mux_reset, ATT_MUX_RESET);
static _SENSOR_DEVICE_ATTR_RW(mux_ctrl, lpc_callback, ATT_MUX_CTRL);
//SENSOR_DEVICE_ATTR - BMC mailbox
static _SENSOR_DEVICE_ATTR_WO(temp_mac_hwm , lpc_callback , ATT_TEMP_MAC_HWM);
//SENSOR_DEVICE_ATTR - EC
static _SENSOR_DEVICE_ATTR_RO(cpu_hw_id, lpc_callback, ATT_CPU_HW_ID);
static _SENSOR_DEVICE_ATTR_RO(cpu_deph_id, lpc_callback, ATT_CPU_DEPH_ID);
static _SENSOR_DEVICE_ATTR_RO(cpu_build_id, lpc_callback, ATT_CPU_BUILD_ID);
static _SENSOR_DEVICE_ATTR_RO(bios_boot_rom, lpc_callback, ATT_BIOS_BOOT_ROM);
//SENSOR_DEVICE_ATTR - BSP
static _SENSOR_DEVICE_ATTR_RW(bsp_version, bsp_callback, ATT_BSP_VERSION);
static _SENSOR_DEVICE_ATTR_RW(bsp_debug, bsp_callback, ATT_BSP_DEBUG);
static _SENSOR_DEVICE_ATTR_WO(bsp_pr_info, bsp_pr_callback, ATT_BSP_PR_INFO);
static _SENSOR_DEVICE_ATTR_WO(bsp_pr_err, bsp_pr_callback, ATT_BSP_PR_ERR);
static SENSOR_DEVICE_ATTR(bsp_reg, S_IRUGO | S_IWUSR, read_lpc_callback, write_bsp_callback, ATT_BSP_REG);
static SENSOR_DEVICE_ATTR(bsp_gpio_max, S_IRUGO, read_gpio_max, NULL, ATT_BSP_GPIO_MAX);
static struct attribute *mb_cpld_attrs[] = {
_DEVICE_ATTR(board_id_0),
_DEVICE_ATTR(board_id_1),
_DEVICE_ATTR(board_sku_id),
_DEVICE_ATTR(board_hw_id),
_DEVICE_ATTR(board_deph_id),
_DEVICE_ATTR(board_build_id),
_DEVICE_ATTR(board_ext_id),
_DEVICE_ATTR(cpld_version_major),
_DEVICE_ATTR(cpld_version_minor),
_DEVICE_ATTR(cpld_version_build),
_DEVICE_ATTR(cpld_version_h),
_DEVICE_ATTR(cpld_id),
_DEVICE_ATTR(mux_reset),
_DEVICE_ATTR(mux_ctrl),
NULL,
};
static struct attribute *bsp_attrs[] = {
_DEVICE_ATTR(bsp_version),
_DEVICE_ATTR(bsp_debug),
_DEVICE_ATTR(bsp_pr_info),
_DEVICE_ATTR(bsp_pr_err),
_DEVICE_ATTR(bsp_reg),
_DEVICE_ATTR(bsp_gpio_max),
NULL,
};
static struct attribute *ec_attrs[] = {
_DEVICE_ATTR(cpu_hw_id),
_DEVICE_ATTR(cpu_deph_id),
_DEVICE_ATTR(cpu_build_id),
_DEVICE_ATTR(bios_boot_rom),
NULL,
};
static struct attribute *bmc_mailbox_attrs[] = {
_DEVICE_ATTR(temp_mac_hwm),
NULL,
};
static struct attribute_group mb_cpld_attr_grp = {
.name = "mb_cpld",
.attrs = mb_cpld_attrs,
};
static struct attribute_group bsp_attr_grp = {
.name = "bsp",
.attrs = bsp_attrs,
};
static struct attribute_group ec_attr_grp = {
.name = "ec",
.attrs = ec_attrs,
};
static struct attribute_group bmc_mailbox_attr_grp = {
.name = "bmc_mailbox",
.attrs = bmc_mailbox_attrs,
};
static void lpc_dev_release( struct device * dev)
{
return;
}
static struct platform_device lpc_dev = {
.name = DRIVER_NAME,
.id = -1,
.dev = {
.release = lpc_dev_release,
}
};
static int lpc_drv_probe(struct platform_device *pdev)
{
int i = 0, grp_num = 4;
int err[4] = {0};
struct attribute_group *grp;
lpc_data = devm_kzalloc(&pdev->dev, sizeof(struct lpc_data_s),
GFP_KERNEL);
if (!lpc_data)
return -ENOMEM;
mutex_init(&lpc_data->access_lock);
for (i=0; i<grp_num; ++i) {
switch (i) {
case 0:
grp = &mb_cpld_attr_grp;
break;
case 1:
grp = &bmc_mailbox_attr_grp;
break;
case 2:
grp = &bsp_attr_grp;
break;
case 3:
grp = &ec_attr_grp;
break;
default:
break;
}
err[i] = sysfs_create_group(&pdev->dev.kobj, grp);
if (err[i]) {
printk(KERN_ERR "Cannot create sysfs for group %s\n", grp->name);
goto exit;
} else {
continue;
}
}
return 0;
exit:
for (i=0; i<grp_num; ++i) {
switch (i) {
case 0:
grp = &mb_cpld_attr_grp;
break;
case 1:
grp = &bmc_mailbox_attr_grp;
break;
case 2:
grp = &bsp_attr_grp;
break;
case 3:
grp = &ec_attr_grp;
break;
default:
break;
}
sysfs_remove_group(&pdev->dev.kobj, grp);
if (!err[i]) {
//remove previous successful cases
continue;
} else {
//remove first failed case, then return
return err[i];
}
}
return 0;
}
static int lpc_drv_remove(struct platform_device *pdev)
{
sysfs_remove_group(&pdev->dev.kobj, &mb_cpld_attr_grp);
sysfs_remove_group(&pdev->dev.kobj, &bmc_mailbox_attr_grp);
sysfs_remove_group(&pdev->dev.kobj, &bsp_attr_grp);
sysfs_remove_group(&pdev->dev.kobj, &ec_attr_grp);
return 0;
}
static struct platform_driver lpc_drv = {
.probe = lpc_drv_probe,
.remove = __exit_p(lpc_drv_remove),
.driver = {
.name = DRIVER_NAME,
},
};
int lpc_init(void)
{
int err = 0;
err = platform_driver_register(&lpc_drv);
if (err) {
printk(KERN_ERR "%s(#%d): platform_driver_register failed(%d)\n",
__func__, __LINE__, err);
return err;
}
err = platform_device_register(&lpc_dev);
if (err) {
printk(KERN_ERR "%s(#%d): platform_device_register failed(%d)\n",
__func__, __LINE__, err);
platform_driver_unregister(&lpc_drv);
return err;
}
return err;
}
void lpc_exit(void)
{
platform_driver_unregister(&lpc_drv);
platform_device_unregister(&lpc_dev);
}
MODULE_AUTHOR("Jason Tsai <jason.cy.tsai@ufispace.com>");
MODULE_DESCRIPTION("x86_64_ufispace_s8901_54xc_lpc driver");
MODULE_LICENSE("GPL");
module_init(lpc_init);
module_exit(lpc_exit);
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