diff options
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index c2fb19af1070..bedc6cd51f39 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -8213,6 +8213,7 @@ static u8 fan_control_resume_level; static int fan_watchdog_maxinterval; static bool fan_with_ns_addr; +static bool ecfw_with_fan_dec_rpm; static struct mutex fan_mutex; @@ -8856,7 +8857,11 @@ static ssize_t fan_fan1_input_show(struct device *dev, if (res < 0) return res; - return sysfs_emit(buf, "%u\n", speed); + /* Check for fan speeds displayed in hexadecimal */ + if (!ecfw_with_fan_dec_rpm) + return sysfs_emit(buf, "%u\n", speed); + else + return sysfs_emit(buf, "%x\n", speed); } static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); @@ -8873,7 +8878,11 @@ static ssize_t fan_fan2_input_show(struct device *dev, if (res < 0) return res; - return sysfs_emit(buf, "%u\n", speed); + /* Check for fan speeds displayed in hexadecimal */ + if (!ecfw_with_fan_dec_rpm) + return sysfs_emit(buf, "%u\n", speed); + else + return sysfs_emit(buf, "%x\n", speed); } static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); @@ -8949,6 +8958,7 @@ static const struct attribute_group fan_driver_attr_group = { #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ #define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */ +#define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */ static const struct tpacpi_quirk fan_quirk_table[] __initconst = { TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), @@ -8970,6 +8980,7 @@ static const struct tpacpi_quirk fan_quirk_table[] __initconst = { TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */ TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/ TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ + TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ }; static int __init fan_init(struct ibm_init_struct *iibm) @@ -9010,6 +9021,13 @@ static int __init fan_init(struct ibm_init_struct *iibm) tp_features.fan_ctrl_status_undef = 1; } + /* Check for the EC/BIOS with RPM reported in decimal*/ + if (quirks & TPACPI_FAN_DECRPM) { + pr_info("ECFW with fan RPM as decimal in EC register\n"); + ecfw_with_fan_dec_rpm = 1; + tp_features.fan_ctrl_status_undef = 1; + } + if (gfan_handle) { /* 570, 600e/x, 770e, 770x */ fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; @@ -9221,7 +9239,11 @@ static int fan_read(struct seq_file *m) if (rc < 0) return rc; - seq_printf(m, "speed:\t\t%d\n", speed); + /* Check for fan speeds displayed in hexadecimal */ + if (!ecfw_with_fan_dec_rpm) + seq_printf(m, "speed:\t\t%d\n", speed); + else + seq_printf(m, "speed:\t\t%x\n", speed); if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) { /* |