Provide support for the fan direction register.
This register shows configuration for system fans direction, which could
be forward or reversed.
For forward direction - relevant bit is set 0;
For reversed direction - relevant bit is set 1.
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxxxx>
---
drivers/platform/x86/mlx-platform.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index df3fcd3..3b79568 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -33,6 +33,7 @@
#define MLXPLAT_CPLD_LPC_REG_LED3_OFFSET 0x22
#define MLXPLAT_CPLD_LPC_REG_LED4_OFFSET 0x23
#define MLXPLAT_CPLD_LPC_REG_LED5_OFFSET 0x24
+#define MLXPLAT_CPLD_LPC_REG_FAN_DIRECTION 0x2a
#define MLXPLAT_CPLD_LPC_REG_GP1_OFFSET 0x30
#define MLXPLAT_CPLD_LPC_REG_WP1_OFFSET 0x31
#define MLXPLAT_CPLD_LPC_REG_GP2_OFFSET 0x32
@@ -1184,6 +1185,12 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
.bit = 1,
.mode = 0444,
},
+ {
+ .label = "fan_dir",
+ .reg = MLXPLAT_CPLD_LPC_REG_FAN_DIRECTION,
+ .bit = GENMASK(7, 0),
+ .mode = 0200,
+ },
};
static struct mlxreg_core_platform_data mlxplat_default_ng_regs_io_data = {
@@ -1307,6 +1314,7 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_LED3_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_DIRECTION:
case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WP1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
@@ -1360,6 +1368,7 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_LED3_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_DIRECTION:
case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
--
2.1.4
