Add mlxreg-fan platform driver activation. FAN driver uses the same regmap
infrastructure as others Mellanox platform drivers. Specific registers
description for default FAN platform data configuration are added to
mlx-platform. There are the registers for tachometers reading, PWM
control and FAN ownership control. The last one has a default value,
which is set at initialization time through the regmap infrastructure,
which is necessary for moving FAN control ownership from hardware to
software.
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxxxx>
---
drivers/platform/x86/mlx-platform.c | 144 +++++++++++++++++++++++++++++++++++-
1 file changed, 143 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index 3a22750..deea6a6 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -59,6 +59,7 @@
#define MLXPLAT_CPLD_LPC_REG_WP1_OFFSET 0x31
#define MLXPLAT_CPLD_LPC_REG_GP2_OFFSET 0x32
#define MLXPLAT_CPLD_LPC_REG_WP2_OFFSET 0x33
+#define MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET 0x37
#define MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET 0x3a
#define MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET 0x3b
#define MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET 0x40
@@ -73,9 +74,23 @@
#define MLXPLAT_CPLD_LPC_REG_FAN_OFFSET 0x88
#define MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET 0x89
#define MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET 0x8a
+#define MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET 0xe3
+#define MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET 0xe4
+#define MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET 0xe5
+#define MLXPLAT_CPLD_LPC_REG_TACHO3_OFFSET 0xe6
+#define MLXPLAT_CPLD_LPC_REG_TACHO4_OFFSET 0xe7
+#define MLXPLAT_CPLD_LPC_REG_TACHO5_OFFSET 0xe8
+#define MLXPLAT_CPLD_LPC_REG_TACHO6_OFFSET 0xe9
+#define MLXPLAT_CPLD_LPC_REG_TACHO7_OFFSET 0xea
+#define MLXPLAT_CPLD_LPC_REG_TACHO8_OFFSET 0xeb
+#define MLXPLAT_CPLD_LPC_REG_TACHO9_OFFSET 0xec
+#define MLXPLAT_CPLD_LPC_REG_TACHO10_OFFSET 0xed
+#define MLXPLAT_CPLD_LPC_REG_TACHO11_OFFSET 0xee
+#define MLXPLAT_CPLD_LPC_REG_TACHO12_OFFSET 0xef
#define MLXPLAT_CPLD_LPC_IO_RANGE 0x100
#define MLXPLAT_CPLD_LPC_I2C_CH1_OFF 0xdb
#define MLXPLAT_CPLD_LPC_I2C_CH2_OFF 0xda
+
#define MLXPLAT_CPLD_LPC_PIO_OFFSET 0x10000UL
#define MLXPLAT_CPLD_LPC_REG1 ((MLXPLAT_CPLD_LPC_REG_BASE_ADRR + \
MLXPLAT_CPLD_LPC_I2C_CH1_OFF) | \
@@ -131,6 +146,7 @@
* @pdev_hotplug - hotplug platform devices
* @pdev_led - led platform devices
* @pdev_io_regs - register access platform devices
+ * @pdev_fan - FAN platform devices
*/
struct mlxplat_priv {
struct platform_device *pdev_i2c;
@@ -138,6 +154,7 @@ struct mlxplat_priv {
struct platform_device *pdev_hotplug;
struct platform_device *pdev_led;
struct platform_device *pdev_io_regs;
+ struct platform_device *pdev_fan;
};
/* Regions for LPC I2C controller and LPC base register space */
@@ -929,6 +946,79 @@ static struct mlxreg_core_platform_data mlxplat_default_regs_io_data = {
.counter = ARRAY_SIZE(mlxplat_mlxcpld_default_regs_io_data),
};
+/* Platform FAN default */
+static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_data[] = {
+ {
+ .label = "pwm1",
+ .reg = MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET,
+ },
+ {
+ .label = "tacho1",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho2",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho3",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO3_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho4",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO4_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho5",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO5_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho6",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO6_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho7",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO7_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho8",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO8_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho9",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO9_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho10",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO10_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho11",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO11_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+ {
+ .label = "tacho12",
+ .reg = MLXPLAT_CPLD_LPC_REG_TACHO12_OFFSET,
+ .mask = GENMASK(7, 0),
+ },
+};
+
+static struct mlxreg_core_platform_data mlxplat_default_fan_data = {
+ .data = mlxplat_mlxcpld_default_fan_data,
+ .counter = ARRAY_SIZE(mlxplat_mlxcpld_default_fan_data),
+};
+
static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
@@ -949,6 +1039,8 @@ static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_PWR_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET:
return true;
}
return false;
@@ -983,6 +1075,20 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_FAN_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO3_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO4_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO5_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO6_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO7_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO8_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO9_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO10_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO11_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO12_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET:
return true;
}
return false;
@@ -1015,6 +1121,20 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_FAN_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO3_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO4_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO5_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO6_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO7_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO8_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO9_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO10_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO11_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_TACHO12_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET:
return true;
}
return false;
@@ -1023,6 +1143,7 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
static const struct reg_default mlxplat_mlxcpld_regmap_default[] = {
{ MLXPLAT_CPLD_LPC_REG_WP1_OFFSET, 0x00 },
{ MLXPLAT_CPLD_LPC_REG_WP2_OFFSET, 0x00 },
+ { MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET, 0x00 },
};
struct mlxplat_mlxcpld_regmap_context {
@@ -1071,6 +1192,7 @@ static struct platform_device *mlxplat_dev;
static struct mlxreg_core_hotplug_platform_data *mlxplat_hotplug;
static struct mlxreg_core_platform_data *mlxplat_led;
static struct mlxreg_core_platform_data *mlxplat_regs_io;
+static struct mlxreg_core_platform_data *mlxplat_fan;
static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
{
@@ -1155,6 +1277,7 @@ static int __init mlxplat_dmi_qmb7xx_matched(const struct dmi_system_id *dmi)
mlxplat_hotplug->deferred_nr =
mlxplat_msn21xx_channels[MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
mlxplat_led = &mlxplat_msn21xx_led_data;
+ mlxplat_fan = &mlxplat_default_fan_data;
return 1;
};
@@ -1410,14 +1533,31 @@ static int __init mlxplat_init(void)
}
}
+ /* Add FAN driver. */
+ if (mlxplat_fan) {
+ mlxplat_fan->regmap = mlxplat_hotplug->regmap;
+ priv->pdev_fan = platform_device_register_resndata(
+ &mlxplat_dev->dev, "mlxreg-fan",
+ PLATFORM_DEVID_NONE, NULL, 0,
+ mlxplat_fan,
+ sizeof(*mlxplat_fan));
+ if (IS_ERR(priv->pdev_io_regs)) {
+ err = PTR_ERR(priv->pdev_io_regs);
+ goto fail_platform_io_regs_register;
+ }
+ }
+
/* Sync registers with hardware. */
regcache_mark_dirty(mlxplat_hotplug->regmap);
err = regcache_sync(mlxplat_hotplug->regmap);
if (err)
- goto fail_platform_io_regs_register;
+ goto fail_platform_fan_register;
return 0;
+fail_platform_fan_register:
+ if (mlxplat_fan)
+ platform_device_unregister(priv->pdev_fan);
fail_platform_io_regs_register:
if (mlxplat_regs_io)
platform_device_unregister(priv->pdev_io_regs);
@@ -1441,6 +1581,8 @@ static void __exit mlxplat_exit(void)
struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev);
int i;
+ if (priv->pdev_fan)
+ platform_device_unregister(priv->pdev_fan);
if (priv->pdev_io_regs)
platform_device_unregister(priv->pdev_io_regs);
platform_device_unregister(priv->pdev_led);
--
2.1.4
