diff options
author | Jean Delvare <khali@linux-fr.org> | 2007-05-08 17:21:59 +0200 |
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committer | Jean Delvare <khali@hyperion.delvare> | 2007-05-08 17:21:59 +0200 |
commit | 8eccbb6fb97a5b54a9db166399f0d24f33114522 (patch) | |
tree | 0eff8bf78f899cb55c59904d1ed3e3430bf742a3 /drivers/hwmon/smsc47m1.c | |
parent | ce7ee4e80a72d3b1009ca232be8981de93c015f6 (diff) | |
download | linux-8eccbb6fb97a5b54a9db166399f0d24f33114522.tar.bz2 |
hwmon/smsc47m1: Add support for the LPC47M292
The new SMSC LPC47M292 Super-I/O chip is a bit different from the
previous ones, it supports a 3rd fan, but unfortunately the pin
configuration registers are different.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/smsc47m1.c')
-rw-r--r-- | drivers/hwmon/smsc47m1.c | 160 |
1 files changed, 126 insertions, 34 deletions
diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c index beb881c4b2e8..16762cca87e5 100644 --- a/drivers/hwmon/smsc47m1.c +++ b/drivers/hwmon/smsc47m1.c @@ -3,10 +3,11 @@ for hardware monitoring Supports the SMSC LPC47B27x, LPC47M10x, LPC47M112, LPC47M13x, - LPC47M14x, LPC47M15x, LPC47M192 and LPC47M997 Super-I/O chips. + LPC47M14x, LPC47M15x, LPC47M192, LPC47M292 and LPC47M997 + Super-I/O chips. Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> - Copyright (C) 2004 Jean Delvare <khali@linux-fr.org> + Copyright (C) 2004-2007 Jean Delvare <khali@linux-fr.org> Ported to Linux 2.6 by Gabriele Gorla <gorlik@yahoo.com> and Jean Delvare @@ -40,6 +41,8 @@ /* Address is autodetected, there is no default value */ static unsigned short address; +static u8 devid; +enum chips { smsc47m1, smsc47m2 }; /* Super-I/0 registers and commands */ @@ -87,10 +90,18 @@ superio_exit(void) #define SMSC47M1_REG_ALARM 0x04 #define SMSC47M1_REG_TPIN(nr) (0x34 - (nr)) #define SMSC47M1_REG_PPIN(nr) (0x36 - (nr)) -#define SMSC47M1_REG_PWM(nr) (0x56 + (nr)) #define SMSC47M1_REG_FANDIV 0x58 -#define SMSC47M1_REG_FAN(nr) (0x59 + (nr)) -#define SMSC47M1_REG_FAN_PRELOAD(nr) (0x5B + (nr)) + +static const u8 SMSC47M1_REG_FAN[3] = { 0x59, 0x5a, 0x6b }; +static const u8 SMSC47M1_REG_FAN_PRELOAD[3] = { 0x5b, 0x5c, 0x6c }; +static const u8 SMSC47M1_REG_PWM[3] = { 0x56, 0x57, 0x69 }; + +#define SMSC47M2_REG_ALARM6 0x09 +#define SMSC47M2_REG_TPIN1 0x38 +#define SMSC47M2_REG_TPIN2 0x37 +#define SMSC47M2_REG_TPIN3 0x2d +#define SMSC47M2_REG_PPIN3 0x2c +#define SMSC47M2_REG_FANDIV3 0x6a #define MIN_FROM_REG(reg,div) ((reg)>=192 ? 0 : \ 983040/((192-(reg))*(div))) @@ -103,17 +114,18 @@ superio_exit(void) struct smsc47m1_data { struct i2c_client client; + enum chips type; struct class_device *class_dev; struct mutex lock; struct mutex update_lock; unsigned long last_updated; /* In jiffies */ - u8 fan[2]; /* Register value */ - u8 fan_preload[2]; /* Register value */ - u8 fan_div[2]; /* Register encoding, shifted right */ + u8 fan[3]; /* Register value */ + u8 fan_preload[3]; /* Register value */ + u8 fan_div[3]; /* Register encoding, shifted right */ u8 alarms; /* Register encoding */ - u8 pwm[2]; /* Register value (bit 7 is enable) */ + u8 pwm[3]; /* Register value (bit 0 is disable) */ }; @@ -200,7 +212,7 @@ static ssize_t set_fan_min(struct device *dev, const char *buf, } data->fan_preload[nr] = 192 - ((983040 + rpmdiv / 2) / rpmdiv); - smsc47m1_write_value(client, SMSC47M1_REG_FAN_PRELOAD(nr), + smsc47m1_write_value(client, SMSC47M1_REG_FAN_PRELOAD[nr], data->fan_preload[nr]); mutex_unlock(&data->update_lock); @@ -234,15 +246,26 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, return -EINVAL; } - tmp = smsc47m1_read_value(client, SMSC47M1_REG_FANDIV) & 0x0F; - tmp |= (data->fan_div[0] << 4) | (data->fan_div[1] << 6); - smsc47m1_write_value(client, SMSC47M1_REG_FANDIV, tmp); + switch (nr) { + case 0: + case 1: + tmp = smsc47m1_read_value(client, SMSC47M1_REG_FANDIV) + & ~(0x03 << (4 + 2 * nr)); + tmp |= data->fan_div[nr] << (4 + 2 * nr); + smsc47m1_write_value(client, SMSC47M1_REG_FANDIV, tmp); + break; + case 2: + tmp = smsc47m1_read_value(client, SMSC47M2_REG_FANDIV3) & 0xCF; + tmp |= data->fan_div[2] << 4; + smsc47m1_write_value(client, SMSC47M2_REG_FANDIV3, tmp); + break; + } /* Preserve fan min */ tmp = 192 - (old_div * (192 - data->fan_preload[nr]) + new_div / 2) / new_div; data->fan_preload[nr] = SENSORS_LIMIT(tmp, 0, 191); - smsc47m1_write_value(client, SMSC47M1_REG_FAN_PRELOAD(nr), + smsc47m1_write_value(client, SMSC47M1_REG_FAN_PRELOAD[nr], data->fan_preload[nr]); mutex_unlock(&data->update_lock); @@ -263,7 +286,7 @@ static ssize_t set_pwm(struct device *dev, const char *buf, mutex_lock(&data->update_lock); data->pwm[nr] &= 0x81; /* Preserve additional bits */ data->pwm[nr] |= PWM_TO_REG(val); - smsc47m1_write_value(client, SMSC47M1_REG_PWM(nr), + smsc47m1_write_value(client, SMSC47M1_REG_PWM[nr], data->pwm[nr]); mutex_unlock(&data->update_lock); @@ -284,7 +307,7 @@ static ssize_t set_pwm_en(struct device *dev, const char *buf, mutex_lock(&data->update_lock); data->pwm[nr] &= 0xFE; /* preserve the other bits */ data->pwm[nr] |= !val; - smsc47m1_write_value(client, SMSC47M1_REG_PWM(nr), + smsc47m1_write_value(client, SMSC47M1_REG_PWM[nr], data->pwm[nr]); mutex_unlock(&data->update_lock); @@ -345,6 +368,7 @@ static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ fan_present(1); fan_present(2); +fan_present(3); static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL); @@ -358,11 +382,16 @@ static struct attribute *smsc47m1_attributes[] = { &dev_attr_fan2_input.attr, &dev_attr_fan2_min.attr, &dev_attr_fan2_div.attr, + &dev_attr_fan3_input.attr, + &dev_attr_fan3_min.attr, + &dev_attr_fan3_div.attr, &dev_attr_pwm1.attr, &dev_attr_pwm1_enable.attr, &dev_attr_pwm2.attr, &dev_attr_pwm2_enable.attr, + &dev_attr_pwm3.attr, + &dev_attr_pwm3_enable.attr, &dev_attr_alarms.attr, NULL @@ -377,7 +406,7 @@ static int __init smsc47m1_find(unsigned short *addr) u8 val; superio_enter(); - val = superio_inb(SUPERIO_REG_DEVID); + devid = superio_inb(SUPERIO_REG_DEVID); /* * SMSC LPC47M10x/LPC47M112/LPC47M13x (device id 0x59), LPC47M14x @@ -386,18 +415,29 @@ static int __init smsc47m1_find(unsigned short *addr) * can do much more besides (device id 0x60). * The LPC47M997 is undocumented, but seems to be compatible with * the LPC47M192, and has the same device id. + * The LPC47M292 (device id 0x6B) is somewhat compatible, but it + * supports a 3rd fan, and the pin configuration registers are + * unfortunately different. */ - if (val == 0x51) + switch (devid) { + case 0x51: printk(KERN_INFO "smsc47m1: Found SMSC LPC47B27x\n"); - else if (val == 0x59) + break; + case 0x59: printk(KERN_INFO "smsc47m1: Found SMSC " "LPC47M10x/LPC47M112/LPC47M13x\n"); - else if (val == 0x5F) + break; + case 0x5F: printk(KERN_INFO "smsc47m1: Found SMSC LPC47M14x\n"); - else if (val == 0x60) + break; + case 0x60: printk(KERN_INFO "smsc47m1: Found SMSC " "LPC47M15x/LPC47M192/LPC47M997\n"); - else { + break; + case 0x6B: + printk(KERN_INFO "smsc47m1: Found SMSC LPC47M292\n"); + break; + default: superio_exit(); return -ENODEV; } @@ -421,7 +461,7 @@ static int smsc47m1_detect(struct i2c_adapter *adapter) struct i2c_client *new_client; struct smsc47m1_data *data; int err = 0; - int fan1, fan2, pwm1, pwm2; + int fan1, fan2, fan3, pwm1, pwm2, pwm3; if (!request_region(address, SMSC_EXTENT, smsc47m1_driver.driver.name)) { dev_err(&adapter->dev, "Region 0x%x already in use!\n", address); @@ -433,6 +473,7 @@ static int smsc47m1_detect(struct i2c_adapter *adapter) goto error_release; } + data->type = devid == 0x6B ? smsc47m2 : smsc47m1; new_client = &data->client; i2c_set_clientdata(new_client, data); new_client->addr = address; @@ -441,20 +482,35 @@ static int smsc47m1_detect(struct i2c_adapter *adapter) new_client->driver = &smsc47m1_driver; new_client->flags = 0; - strlcpy(new_client->name, "smsc47m1", I2C_NAME_SIZE); + strlcpy(new_client->name, + data->type == smsc47m2 ? "smsc47m2" : "smsc47m1", + I2C_NAME_SIZE); mutex_init(&data->update_lock); /* If no function is properly configured, there's no point in actually registering the chip. */ - fan1 = (smsc47m1_read_value(new_client, SMSC47M1_REG_TPIN(0)) & 0x05) - == 0x05; - fan2 = (smsc47m1_read_value(new_client, SMSC47M1_REG_TPIN(1)) & 0x05) - == 0x05; pwm1 = (smsc47m1_read_value(new_client, SMSC47M1_REG_PPIN(0)) & 0x05) == 0x04; pwm2 = (smsc47m1_read_value(new_client, SMSC47M1_REG_PPIN(1)) & 0x05) == 0x04; - if (!(fan1 || fan2 || pwm1 || pwm2)) { + if (data->type == smsc47m2) { + fan1 = (smsc47m1_read_value(new_client, SMSC47M2_REG_TPIN1) + & 0x0d) == 0x09; + fan2 = (smsc47m1_read_value(new_client, SMSC47M2_REG_TPIN2) + & 0x0d) == 0x09; + fan3 = (smsc47m1_read_value(new_client, SMSC47M2_REG_TPIN3) + & 0x0d) == 0x0d; + pwm3 = (smsc47m1_read_value(new_client, SMSC47M2_REG_PPIN3) + & 0x0d) == 0x08; + } else { + fan1 = (smsc47m1_read_value(new_client, SMSC47M1_REG_TPIN(0)) + & 0x05) == 0x05; + fan2 = (smsc47m1_read_value(new_client, SMSC47M1_REG_TPIN(1)) + & 0x05) == 0x05; + fan3 = 0; + pwm3 = 0; + } + if (!(fan1 || fan2 || fan3 || pwm1 || pwm2 || pwm3)) { dev_warn(&adapter->dev, "Device at 0x%x is not configured, " "will not use\n", new_client->addr); err = -ENODEV; @@ -497,6 +553,18 @@ static int smsc47m1_detect(struct i2c_adapter *adapter) dev_dbg(&new_client->dev, "Fan 2 not enabled by hardware, " "skipping\n"); + if (fan3) { + if ((err = device_create_file(&new_client->dev, + &dev_attr_fan3_input)) + || (err = device_create_file(&new_client->dev, + &dev_attr_fan3_min)) + || (err = device_create_file(&new_client->dev, + &dev_attr_fan3_div))) + goto error_remove_files; + } else + dev_dbg(&new_client->dev, "Fan 3 not enabled by hardware, " + "skipping\n"); + if (pwm1) { if ((err = device_create_file(&new_client->dev, &dev_attr_pwm1)) @@ -506,6 +574,7 @@ static int smsc47m1_detect(struct i2c_adapter *adapter) } else dev_dbg(&new_client->dev, "PWM 1 not enabled by hardware, " "skipping\n"); + if (pwm2) { if ((err = device_create_file(&new_client->dev, &dev_attr_pwm2)) @@ -516,6 +585,16 @@ static int smsc47m1_detect(struct i2c_adapter *adapter) dev_dbg(&new_client->dev, "PWM 2 not enabled by hardware, " "skipping\n"); + if (pwm3) { + if ((err = device_create_file(&new_client->dev, + &dev_attr_pwm3)) + || (err = device_create_file(&new_client->dev, + &dev_attr_pwm3_enable))) + goto error_remove_files; + } else + dev_dbg(&new_client->dev, "PWM 3 not enabled by hardware, " + "skipping\n"); + if ((err = device_create_file(&new_client->dev, &dev_attr_alarms))) goto error_remove_files; @@ -580,15 +659,16 @@ static struct smsc47m1_data *smsc47m1_update_device(struct device *dev, mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || init) { - int i; + int i, fan_nr; + fan_nr = data->type == smsc47m2 ? 3 : 2; - for (i = 0; i < 2; i++) { + for (i = 0; i < fan_nr; i++) { data->fan[i] = smsc47m1_read_value(client, - SMSC47M1_REG_FAN(i)); + SMSC47M1_REG_FAN[i]); data->fan_preload[i] = smsc47m1_read_value(client, - SMSC47M1_REG_FAN_PRELOAD(i)); + SMSC47M1_REG_FAN_PRELOAD[i]); data->pwm[i] = smsc47m1_read_value(client, - SMSC47M1_REG_PWM(i)); + SMSC47M1_REG_PWM[i]); } i = smsc47m1_read_value(client, SMSC47M1_REG_FANDIV); @@ -601,6 +681,18 @@ static struct smsc47m1_data *smsc47m1_update_device(struct device *dev, if (data->alarms) smsc47m1_write_value(client, SMSC47M1_REG_ALARM, 0xC0); + if (fan_nr >= 3) { + data->fan_div[2] = (smsc47m1_read_value(client, + SMSC47M2_REG_FANDIV3) >> 4) & 0x03; + data->alarms |= (smsc47m1_read_value(client, + SMSC47M2_REG_ALARM6) & 0x40) >> 4; + /* Clear alarm if needed */ + if (data->alarms & 0x04) + smsc47m1_write_value(client, + SMSC47M2_REG_ALARM6, + 0x40); + } + data->last_updated = jiffies; } |