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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-14 17:46:54 +07:00
357b9dc6c2
The sch5627 needs to be explicitly told to start an adc conversion for Vbat, once in a while. Without this Vbat may read 0, and will never get updated. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
895 lines
26 KiB
C
895 lines
26 KiB
C
/***************************************************************************
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* Copyright (C) 2010-2011 Hans de Goede <hdegoede@redhat.com> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/platform_device.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <linux/io.h>
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#include <linux/acpi.h>
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#include <linux/delay.h>
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#define DRVNAME "sch5627"
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#define DEVNAME DRVNAME /* We only support one model */
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#define SIO_SCH5627_EM_LD 0x0C /* Embedded Microcontroller LD */
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#define SIO_UNLOCK_KEY 0x55 /* Key to enable Super-I/O */
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#define SIO_LOCK_KEY 0xAA /* Key to disable Super-I/O */
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#define SIO_REG_LDSEL 0x07 /* Logical device select */
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#define SIO_REG_DEVID 0x20 /* Device ID */
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#define SIO_REG_ENABLE 0x30 /* Logical device enable */
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#define SIO_REG_ADDR 0x66 /* Logical device address (2 bytes) */
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#define SIO_SCH5627_ID 0xC6 /* Chipset ID */
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#define REGION_LENGTH 9
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#define SCH5627_HWMON_ID 0xa5
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#define SCH5627_COMPANY_ID 0x5c
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#define SCH5627_PRIMARY_ID 0xa0
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#define SCH5627_CMD_READ 0x02
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#define SCH5627_CMD_WRITE 0x03
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#define SCH5627_REG_BUILD_CODE 0x39
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#define SCH5627_REG_BUILD_ID 0x3a
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#define SCH5627_REG_HWMON_ID 0x3c
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#define SCH5627_REG_HWMON_REV 0x3d
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#define SCH5627_REG_COMPANY_ID 0x3e
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#define SCH5627_REG_PRIMARY_ID 0x3f
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#define SCH5627_REG_CTRL 0x40
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#define SCH5627_NO_TEMPS 8
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#define SCH5627_NO_FANS 4
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#define SCH5627_NO_IN 5
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static const u16 SCH5627_REG_TEMP_MSB[SCH5627_NO_TEMPS] = {
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0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181 };
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static const u16 SCH5627_REG_TEMP_LSN[SCH5627_NO_TEMPS] = {
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0xE2, 0xE1, 0xE1, 0xE5, 0xE5, 0xE6, 0x182, 0x182 };
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static const u16 SCH5627_REG_TEMP_HIGH_NIBBLE[SCH5627_NO_TEMPS] = {
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0, 0, 1, 1, 0, 0, 0, 1 };
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static const u16 SCH5627_REG_TEMP_HIGH[SCH5627_NO_TEMPS] = {
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0x61, 0x57, 0x59, 0x5B, 0x5D, 0x5F, 0x184, 0x186 };
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static const u16 SCH5627_REG_TEMP_ABS[SCH5627_NO_TEMPS] = {
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0x9B, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x1A8, 0x1A9 };
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static const u16 SCH5627_REG_FAN[SCH5627_NO_FANS] = {
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0x2C, 0x2E, 0x30, 0x32 };
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static const u16 SCH5627_REG_FAN_MIN[SCH5627_NO_FANS] = {
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0x62, 0x64, 0x66, 0x68 };
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static const u16 SCH5627_REG_IN_MSB[SCH5627_NO_IN] = {
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0x22, 0x23, 0x24, 0x25, 0x189 };
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static const u16 SCH5627_REG_IN_LSN[SCH5627_NO_IN] = {
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0xE4, 0xE4, 0xE3, 0xE3, 0x18A };
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static const u16 SCH5627_REG_IN_HIGH_NIBBLE[SCH5627_NO_IN] = {
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1, 0, 1, 0, 1 };
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static const u16 SCH5627_REG_IN_FACTOR[SCH5627_NO_IN] = {
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10745, 3660, 9765, 10745, 3660 };
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static const char * const SCH5627_IN_LABELS[SCH5627_NO_IN] = {
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"VCC", "VTT", "VBAT", "VTR", "V_IN" };
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struct sch5627_data {
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unsigned short addr;
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struct device *hwmon_dev;
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u8 control;
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u8 temp_max[SCH5627_NO_TEMPS];
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u8 temp_crit[SCH5627_NO_TEMPS];
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u16 fan_min[SCH5627_NO_FANS];
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struct mutex update_lock;
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unsigned long last_battery; /* In jiffies */
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char valid; /* !=0 if following fields are valid */
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unsigned long last_updated; /* In jiffies */
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u16 temp[SCH5627_NO_TEMPS];
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u16 fan[SCH5627_NO_FANS];
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u16 in[SCH5627_NO_IN];
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};
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static struct platform_device *sch5627_pdev;
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/* Super I/O functions */
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static inline int superio_inb(int base, int reg)
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{
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outb(reg, base);
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return inb(base + 1);
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}
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static inline int superio_enter(int base)
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{
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/* Don't step on other drivers' I/O space by accident */
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if (!request_muxed_region(base, 2, DRVNAME)) {
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pr_err("I/O address 0x%04x already in use\n", base);
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return -EBUSY;
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}
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outb(SIO_UNLOCK_KEY, base);
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return 0;
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}
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static inline void superio_select(int base, int ld)
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{
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outb(SIO_REG_LDSEL, base);
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outb(ld, base + 1);
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}
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static inline void superio_exit(int base)
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{
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outb(SIO_LOCK_KEY, base);
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release_region(base, 2);
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}
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static int sch5627_send_cmd(struct sch5627_data *data, u8 cmd, u16 reg, u8 v)
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{
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u8 val;
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int i;
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/*
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* According to SMSC for the commands we use the maximum time for
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* the EM to respond is 15 ms, but testing shows in practice it
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* responds within 15-32 reads, so we first busy poll, and if
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* that fails sleep a bit and try again until we are way past
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* the 15 ms maximum response time.
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*/
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const int max_busy_polls = 64;
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const int max_lazy_polls = 32;
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/* (Optional) Write-Clear the EC to Host Mailbox Register */
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val = inb(data->addr + 1);
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outb(val, data->addr + 1);
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/* Set Mailbox Address Pointer to first location in Region 1 */
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outb(0x00, data->addr + 2);
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outb(0x80, data->addr + 3);
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/* Write Request Packet Header */
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outb(cmd, data->addr + 4); /* VREG Access Type read:0x02 write:0x03 */
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outb(0x01, data->addr + 5); /* # of Entries: 1 Byte (8-bit) */
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outb(0x04, data->addr + 2); /* Mailbox AP to first data entry loc. */
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/* Write Value field */
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if (cmd == SCH5627_CMD_WRITE)
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outb(v, data->addr + 4);
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/* Write Address field */
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outb(reg & 0xff, data->addr + 6);
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outb(reg >> 8, data->addr + 7);
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/* Execute the Random Access Command */
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outb(0x01, data->addr); /* Write 01h to the Host-to-EC register */
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/* EM Interface Polling "Algorithm" */
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for (i = 0; i < max_busy_polls + max_lazy_polls; i++) {
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if (i >= max_busy_polls)
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msleep(1);
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/* Read Interrupt source Register */
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val = inb(data->addr + 8);
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/* Write Clear the interrupt source bits */
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if (val)
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outb(val, data->addr + 8);
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/* Command Completed ? */
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if (val & 0x01)
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break;
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}
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if (i == max_busy_polls + max_lazy_polls) {
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pr_err("Max retries exceeded reading virtual "
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"register 0x%04hx (%d)\n", reg, 1);
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return -EIO;
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}
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/*
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* According to SMSC we may need to retry this, but sofar I've always
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* seen this succeed in 1 try.
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*/
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for (i = 0; i < max_busy_polls; i++) {
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/* Read EC-to-Host Register */
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val = inb(data->addr + 1);
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/* Command Completed ? */
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if (val == 0x01)
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break;
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if (i == 0)
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pr_warn("EC reports: 0x%02x reading virtual register "
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"0x%04hx\n", (unsigned int)val, reg);
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}
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if (i == max_busy_polls) {
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pr_err("Max retries exceeded reading virtual "
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"register 0x%04hx (%d)\n", reg, 2);
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return -EIO;
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}
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/*
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* According to the SMSC app note we should now do:
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*
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* Set Mailbox Address Pointer to first location in Region 1 *
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* outb(0x00, data->addr + 2);
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* outb(0x80, data->addr + 3);
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*
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* But if we do that things don't work, so let's not.
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*/
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/* Read Value field */
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if (cmd == SCH5627_CMD_READ)
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return inb(data->addr + 4);
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return 0;
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}
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static int sch5627_read_virtual_reg(struct sch5627_data *data, u16 reg)
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{
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return sch5627_send_cmd(data, SCH5627_CMD_READ, reg, 0);
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}
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static int sch5627_write_virtual_reg(struct sch5627_data *data,
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u16 reg, u8 val)
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{
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return sch5627_send_cmd(data, SCH5627_CMD_WRITE, reg, val);
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}
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static int sch5627_read_virtual_reg16(struct sch5627_data *data, u16 reg)
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{
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int lsb, msb;
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/* Read LSB first, this will cause the matching MSB to be latched */
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lsb = sch5627_read_virtual_reg(data, reg);
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if (lsb < 0)
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return lsb;
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msb = sch5627_read_virtual_reg(data, reg + 1);
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if (msb < 0)
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return msb;
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return lsb | (msb << 8);
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}
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static int sch5627_read_virtual_reg12(struct sch5627_data *data, u16 msb_reg,
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u16 lsn_reg, int high_nibble)
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{
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int msb, lsn;
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/* Read MSB first, this will cause the matching LSN to be latched */
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msb = sch5627_read_virtual_reg(data, msb_reg);
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if (msb < 0)
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return msb;
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lsn = sch5627_read_virtual_reg(data, lsn_reg);
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if (lsn < 0)
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return lsn;
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if (high_nibble)
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return (msb << 4) | (lsn >> 4);
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else
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return (msb << 4) | (lsn & 0x0f);
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}
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static struct sch5627_data *sch5627_update_device(struct device *dev)
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{
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struct sch5627_data *data = dev_get_drvdata(dev);
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struct sch5627_data *ret = data;
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int i, val;
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mutex_lock(&data->update_lock);
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/* Trigger a Vbat voltage measurement every 5 minutes */
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if (time_after(jiffies, data->last_battery + 300 * HZ)) {
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sch5627_write_virtual_reg(data, SCH5627_REG_CTRL,
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data->control | 0x10);
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data->last_battery = jiffies;
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}
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/* Cache the values for 1 second */
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if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
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for (i = 0; i < SCH5627_NO_TEMPS; i++) {
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val = sch5627_read_virtual_reg12(data,
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SCH5627_REG_TEMP_MSB[i],
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SCH5627_REG_TEMP_LSN[i],
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SCH5627_REG_TEMP_HIGH_NIBBLE[i]);
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if (unlikely(val < 0)) {
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ret = ERR_PTR(val);
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goto abort;
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}
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data->temp[i] = val;
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}
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for (i = 0; i < SCH5627_NO_FANS; i++) {
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val = sch5627_read_virtual_reg16(data,
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SCH5627_REG_FAN[i]);
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if (unlikely(val < 0)) {
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ret = ERR_PTR(val);
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goto abort;
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}
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data->fan[i] = val;
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}
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for (i = 0; i < SCH5627_NO_IN; i++) {
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val = sch5627_read_virtual_reg12(data,
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SCH5627_REG_IN_MSB[i],
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SCH5627_REG_IN_LSN[i],
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SCH5627_REG_IN_HIGH_NIBBLE[i]);
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if (unlikely(val < 0)) {
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ret = ERR_PTR(val);
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goto abort;
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}
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data->in[i] = val;
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}
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data->last_updated = jiffies;
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data->valid = 1;
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}
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abort:
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mutex_unlock(&data->update_lock);
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return ret;
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}
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static int __devinit sch5627_read_limits(struct sch5627_data *data)
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{
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int i, val;
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for (i = 0; i < SCH5627_NO_TEMPS; i++) {
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/*
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* Note what SMSC calls ABS, is what lm_sensors calls max
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* (aka high), and HIGH is what lm_sensors calls crit.
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*/
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val = sch5627_read_virtual_reg(data, SCH5627_REG_TEMP_ABS[i]);
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if (val < 0)
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return val;
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data->temp_max[i] = val;
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val = sch5627_read_virtual_reg(data, SCH5627_REG_TEMP_HIGH[i]);
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if (val < 0)
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return val;
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data->temp_crit[i] = val;
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}
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for (i = 0; i < SCH5627_NO_FANS; i++) {
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val = sch5627_read_virtual_reg16(data, SCH5627_REG_FAN_MIN[i]);
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if (val < 0)
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return val;
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data->fan_min[i] = val;
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}
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return 0;
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}
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static int reg_to_temp(u16 reg)
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{
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return (reg * 625) / 10 - 64000;
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}
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static int reg_to_temp_limit(u8 reg)
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{
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return (reg - 64) * 1000;
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}
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static int reg_to_rpm(u16 reg)
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{
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if (reg == 0)
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return -EIO;
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if (reg == 0xffff)
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return 0;
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return 5400540 / reg;
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}
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static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%s\n", DEVNAME);
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}
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static ssize_t show_temp(struct device *dev, struct device_attribute
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*devattr, char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct sch5627_data *data = sch5627_update_device(dev);
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int val;
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if (IS_ERR(data))
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return PTR_ERR(data);
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val = reg_to_temp(data->temp[attr->index]);
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return snprintf(buf, PAGE_SIZE, "%d\n", val);
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}
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static ssize_t show_temp_fault(struct device *dev, struct device_attribute
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*devattr, char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct sch5627_data *data = sch5627_update_device(dev);
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if (IS_ERR(data))
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return PTR_ERR(data);
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return snprintf(buf, PAGE_SIZE, "%d\n", data->temp[attr->index] == 0);
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}
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static ssize_t show_temp_max(struct device *dev, struct device_attribute
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*devattr, char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct sch5627_data *data = dev_get_drvdata(dev);
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int val;
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val = reg_to_temp_limit(data->temp_max[attr->index]);
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return snprintf(buf, PAGE_SIZE, "%d\n", val);
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}
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static ssize_t show_temp_crit(struct device *dev, struct device_attribute
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*devattr, char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct sch5627_data *data = dev_get_drvdata(dev);
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int val;
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val = reg_to_temp_limit(data->temp_crit[attr->index]);
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return snprintf(buf, PAGE_SIZE, "%d\n", val);
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}
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|
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static ssize_t show_fan(struct device *dev, struct device_attribute
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*devattr, char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct sch5627_data *data = sch5627_update_device(dev);
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int val;
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|
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if (IS_ERR(data))
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return PTR_ERR(data);
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|
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val = reg_to_rpm(data->fan[attr->index]);
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if (val < 0)
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return val;
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|
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return snprintf(buf, PAGE_SIZE, "%d\n", val);
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}
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|
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static ssize_t show_fan_fault(struct device *dev, struct device_attribute
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*devattr, char *buf)
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|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = sch5627_update_device(dev);
|
|
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n",
|
|
data->fan[attr->index] == 0xffff);
|
|
}
|
|
|
|
static ssize_t show_fan_min(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = dev_get_drvdata(dev);
|
|
int val = reg_to_rpm(data->fan_min[attr->index]);
|
|
if (val < 0)
|
|
return val;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_in(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = sch5627_update_device(dev);
|
|
int val;
|
|
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
val = DIV_ROUND_CLOSEST(
|
|
data->in[attr->index] * SCH5627_REG_IN_FACTOR[attr->index],
|
|
10000);
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_in_label(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%s\n",
|
|
SCH5627_IN_LABELS[attr->index]);
|
|
}
|
|
|
|
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
|
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_max, S_IRUGO, show_temp_max, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_max, S_IRUGO, show_temp_max, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_crit, S_IRUGO, show_temp_crit, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_crit, S_IRUGO, show_temp_crit, NULL, 7);
|
|
|
|
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan_min, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan_min, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO, show_fan_min, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(fan4_min, S_IRUGO, show_fan_min, NULL, 3);
|
|
|
|
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_in_label, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_in_label, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_in_label, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_in_label, NULL, 3);
|
|
|
|
static struct attribute *sch5627_attributes[] = {
|
|
&dev_attr_name.attr,
|
|
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_crit.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in0_input.dev_attr.attr,
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
&sensor_dev_attr_in3_input.dev_attr.attr,
|
|
&sensor_dev_attr_in4_input.dev_attr.attr,
|
|
&sensor_dev_attr_in0_label.dev_attr.attr,
|
|
&sensor_dev_attr_in1_label.dev_attr.attr,
|
|
&sensor_dev_attr_in2_label.dev_attr.attr,
|
|
&sensor_dev_attr_in3_label.dev_attr.attr,
|
|
/* No in4_label as in4 is a generic input pin */
|
|
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group sch5627_group = {
|
|
.attrs = sch5627_attributes,
|
|
};
|
|
|
|
static int sch5627_remove(struct platform_device *pdev)
|
|
{
|
|
struct sch5627_data *data = platform_get_drvdata(pdev);
|
|
|
|
if (data->hwmon_dev)
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
|
|
sysfs_remove_group(&pdev->dev.kobj, &sch5627_group);
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit sch5627_probe(struct platform_device *pdev)
|
|
{
|
|
struct sch5627_data *data;
|
|
int err, build_code, build_id, hwmon_rev, val;
|
|
|
|
data = kzalloc(sizeof(struct sch5627_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
|
|
mutex_init(&data->update_lock);
|
|
platform_set_drvdata(pdev, data);
|
|
|
|
val = sch5627_read_virtual_reg(data, SCH5627_REG_HWMON_ID);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
if (val != SCH5627_HWMON_ID) {
|
|
pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "hwmon",
|
|
val, SCH5627_HWMON_ID);
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
val = sch5627_read_virtual_reg(data, SCH5627_REG_COMPANY_ID);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
if (val != SCH5627_COMPANY_ID) {
|
|
pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "company",
|
|
val, SCH5627_COMPANY_ID);
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
val = sch5627_read_virtual_reg(data, SCH5627_REG_PRIMARY_ID);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
if (val != SCH5627_PRIMARY_ID) {
|
|
pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "primary",
|
|
val, SCH5627_PRIMARY_ID);
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
build_code = sch5627_read_virtual_reg(data, SCH5627_REG_BUILD_CODE);
|
|
if (build_code < 0) {
|
|
err = build_code;
|
|
goto error;
|
|
}
|
|
|
|
build_id = sch5627_read_virtual_reg16(data, SCH5627_REG_BUILD_ID);
|
|
if (build_id < 0) {
|
|
err = build_id;
|
|
goto error;
|
|
}
|
|
|
|
hwmon_rev = sch5627_read_virtual_reg(data, SCH5627_REG_HWMON_REV);
|
|
if (hwmon_rev < 0) {
|
|
err = hwmon_rev;
|
|
goto error;
|
|
}
|
|
|
|
val = sch5627_read_virtual_reg(data, SCH5627_REG_CTRL);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
data->control = val;
|
|
if (!(data->control & 0x01)) {
|
|
pr_err("hardware monitoring not enabled\n");
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
/* Trigger a Vbat voltage measurement, so that we get a valid reading
|
|
the first time we read Vbat */
|
|
sch5627_write_virtual_reg(data, SCH5627_REG_CTRL,
|
|
data->control | 0x10);
|
|
data->last_battery = jiffies;
|
|
|
|
/*
|
|
* Read limits, we do this only once as reading a register on
|
|
* the sch5627 is quite expensive (and they don't change).
|
|
*/
|
|
err = sch5627_read_limits(data);
|
|
if (err)
|
|
goto error;
|
|
|
|
pr_info("firmware build: code 0x%02X, id 0x%04X, hwmon: rev 0x%02X\n",
|
|
build_code, build_id, hwmon_rev);
|
|
|
|
/* Register sysfs interface files */
|
|
err = sysfs_create_group(&pdev->dev.kobj, &sch5627_group);
|
|
if (err)
|
|
goto error;
|
|
|
|
data->hwmon_dev = hwmon_device_register(&pdev->dev);
|
|
if (IS_ERR(data->hwmon_dev)) {
|
|
err = PTR_ERR(data->hwmon_dev);
|
|
data->hwmon_dev = NULL;
|
|
goto error;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
sch5627_remove(pdev);
|
|
return err;
|
|
}
|
|
|
|
static int __init sch5627_find(int sioaddr, unsigned short *address)
|
|
{
|
|
u8 devid;
|
|
int err = superio_enter(sioaddr);
|
|
if (err)
|
|
return err;
|
|
|
|
devid = superio_inb(sioaddr, SIO_REG_DEVID);
|
|
if (devid != SIO_SCH5627_ID) {
|
|
pr_debug("Unsupported device id: 0x%02x\n",
|
|
(unsigned int)devid);
|
|
err = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
superio_select(sioaddr, SIO_SCH5627_EM_LD);
|
|
|
|
if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
|
|
pr_warn("Device not activated\n");
|
|
err = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
/*
|
|
* Warning the order of the low / high byte is the other way around
|
|
* as on most other superio devices!!
|
|
*/
|
|
*address = superio_inb(sioaddr, SIO_REG_ADDR) |
|
|
superio_inb(sioaddr, SIO_REG_ADDR + 1) << 8;
|
|
if (*address == 0) {
|
|
pr_warn("Base address not set\n");
|
|
err = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
pr_info("Found %s chip at %#hx\n", DEVNAME, *address);
|
|
exit:
|
|
superio_exit(sioaddr);
|
|
return err;
|
|
}
|
|
|
|
static int __init sch5627_device_add(unsigned short address)
|
|
{
|
|
struct resource res = {
|
|
.start = address,
|
|
.end = address + REGION_LENGTH - 1,
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
int err;
|
|
|
|
sch5627_pdev = platform_device_alloc(DRVNAME, address);
|
|
if (!sch5627_pdev)
|
|
return -ENOMEM;
|
|
|
|
res.name = sch5627_pdev->name;
|
|
err = acpi_check_resource_conflict(&res);
|
|
if (err)
|
|
goto exit_device_put;
|
|
|
|
err = platform_device_add_resources(sch5627_pdev, &res, 1);
|
|
if (err) {
|
|
pr_err("Device resource addition failed\n");
|
|
goto exit_device_put;
|
|
}
|
|
|
|
err = platform_device_add(sch5627_pdev);
|
|
if (err) {
|
|
pr_err("Device addition failed\n");
|
|
goto exit_device_put;
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit_device_put:
|
|
platform_device_put(sch5627_pdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static struct platform_driver sch5627_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = DRVNAME,
|
|
},
|
|
.probe = sch5627_probe,
|
|
.remove = sch5627_remove,
|
|
};
|
|
|
|
static int __init sch5627_init(void)
|
|
{
|
|
int err = -ENODEV;
|
|
unsigned short address;
|
|
|
|
if (sch5627_find(0x4e, &address) && sch5627_find(0x2e, &address))
|
|
goto exit;
|
|
|
|
err = platform_driver_register(&sch5627_driver);
|
|
if (err)
|
|
goto exit;
|
|
|
|
err = sch5627_device_add(address);
|
|
if (err)
|
|
goto exit_driver;
|
|
|
|
return 0;
|
|
|
|
exit_driver:
|
|
platform_driver_unregister(&sch5627_driver);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static void __exit sch5627_exit(void)
|
|
{
|
|
platform_device_unregister(sch5627_pdev);
|
|
platform_driver_unregister(&sch5627_driver);
|
|
}
|
|
|
|
MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver");
|
|
MODULE_AUTHOR("Hans de Goede (hdegoede@redhat.com)");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sch5627_init);
|
|
module_exit(sch5627_exit);
|