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authorVadim Pasternak2016-10-27 19:55:54 +0000
committerAndy Shevchenko2016-12-16 23:30:25 +0200
commitafc4715901f0dce3206837a7051af05abf5a1e06 (patch)
tree1341035a59f4136d768ebce7d818d4b8bc7f203b /drivers/platform/x86/mlx-platform.c
parentc3886c9d6076555697551da9b921cf6a6e9cc2b5 (diff)
platform/x86: mlx-platform: Add mlxcpld-hotplug driver registration
Add calls for mlxcpld-hotplug platform driver registration/unregistration and add platform hotplug data configurations. This driver, when registered within system will handle system hot-plug events for the power suppliers, power cables and fans (insertion and removing). These events are controlled through CPLD Lattice device. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86/mlx-platform.c')
-rw-r--r--drivers/platform/x86/mlx-platform.c98
1 files changed, 97 insertions, 1 deletions
diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index cb6199e6ade0..97b4c3a219c0 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -38,6 +38,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/platform_data/i2c-mux-reg.h>
+#include <linux/platform_data/mlxcpld-hotplug.h>
#define MLX_PLAT_DEVICE_NAME "mlxplat"
@@ -69,6 +70,7 @@
struct mlxplat_priv {
struct platform_device *pdev_i2c;
struct platform_device *pdev_mux[MLXPLAT_CPLD_LPC_MUX_DEVS];
+ struct platform_device *pdev_hotplug;
};
/* Regions for LPC I2C controller and LPC base register space */
@@ -120,7 +122,87 @@ static struct i2c_mux_reg_platform_data mlxplat_mux_data[] = {
};
-static struct platform_device *mlxplat_dev;
+/* Platform hotplug devices */
+static struct mlxcpld_hotplug_device mlxplat_mlxcpld_hotplug_psu[] = {
+ {
+ .brdinfo = { I2C_BOARD_INFO("24c02", 0x51) },
+ .bus = 10,
+ },
+ {
+ .brdinfo = { I2C_BOARD_INFO("24c02", 0x50) },
+ .bus = 10,
+ },
+};
+
+static struct mlxcpld_hotplug_device mlxplat_mlxcpld_hotplug_pwr[] = {
+ {
+ .brdinfo = { I2C_BOARD_INFO("dps460", 0x59) },
+ .bus = 10,
+ },
+ {
+ .brdinfo = { I2C_BOARD_INFO("dps460", 0x58) },
+ .bus = 10,
+ },
+};
+
+static struct mlxcpld_hotplug_device mlxplat_mlxcpld_hotplug_fan[] = {
+ {
+ .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) },
+ .bus = 11,
+ },
+ {
+ .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) },
+ .bus = 12,
+ },
+ {
+ .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) },
+ .bus = 13,
+ },
+ {
+ .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) },
+ .bus = 14,
+ },
+};
+
+/* Platform hotplug default data */
+static
+struct mlxcpld_hotplug_platform_data mlxplat_mlxcpld_hotplug_default_data = {
+ .top_aggr_offset = (MLXPLAT_CPLD_LPC_REG_BASE_ADRR | 0x3a),
+ .top_aggr_mask = 0x48,
+ .top_aggr_psu_mask = 0x08,
+ .psu_reg_offset = (MLXPLAT_CPLD_LPC_REG_BASE_ADRR | 0x58),
+ .psu_mask = 0x03,
+ .psu_count = ARRAY_SIZE(mlxplat_mlxcpld_hotplug_psu),
+ .psu = mlxplat_mlxcpld_hotplug_psu,
+ .top_aggr_pwr_mask = 0x08,
+ .pwr_reg_offset = (MLXPLAT_CPLD_LPC_REG_BASE_ADRR | 0x64),
+ .pwr_mask = 0x03,
+ .pwr_count = ARRAY_SIZE(mlxplat_mlxcpld_hotplug_pwr),
+ .pwr = mlxplat_mlxcpld_hotplug_pwr,
+ .top_aggr_fan_mask = 0x40,
+ .fan_reg_offset = (MLXPLAT_CPLD_LPC_REG_BASE_ADRR | 0x88),
+ .fan_mask = 0x0f,
+ .fan_count = ARRAY_SIZE(mlxplat_mlxcpld_hotplug_fan),
+ .fan = mlxplat_mlxcpld_hotplug_fan,
+};
+
+/* Platform hotplug MSN21xx system family data */
+static
+struct mlxcpld_hotplug_platform_data mlxplat_mlxcpld_hotplug_msn21xx_data = {
+ .top_aggr_offset = (MLXPLAT_CPLD_LPC_REG_BASE_ADRR | 0x3a),
+ .top_aggr_mask = 0x04,
+ .top_aggr_pwr_mask = 0x04,
+ .pwr_reg_offset = (MLXPLAT_CPLD_LPC_REG_BASE_ADRR | 0x64),
+ .pwr_mask = 0x03,
+ .pwr_count = ARRAY_SIZE(mlxplat_mlxcpld_hotplug_pwr),
+};
+
+static struct resource mlxplat_mlxcpld_hotplug_resources[] = {
+ [0] = DEFINE_RES_IRQ_NAMED(17, "mlxcpld-hotplug"),
+};
+
+struct platform_device *mlxplat_dev;
+struct mlxcpld_hotplug_platform_data *mlxplat_hotplug;
static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
{
@@ -131,6 +213,7 @@ static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
mlxplat_mux_data[i].n_values =
ARRAY_SIZE(mlxplat_default_channels[i]);
}
+ mlxplat_hotplug = &mlxplat_mlxcpld_hotplug_default_data;
return 1;
};
@@ -144,6 +227,7 @@ static int __init mlxplat_dmi_msn21xx_matched(const struct dmi_system_id *dmi)
mlxplat_mux_data[i].n_values =
ARRAY_SIZE(mlxplat_msn21xx_channels);
}
+ mlxplat_hotplug = &mlxplat_mlxcpld_hotplug_msn21xx_data;
return 1;
};
@@ -229,6 +313,16 @@ static int __init mlxplat_init(void)
}
}
+ priv->pdev_hotplug = platform_device_register_resndata(
+ &mlxplat_dev->dev, "mlxcpld-hotplug", -1,
+ mlxplat_mlxcpld_hotplug_resources,
+ ARRAY_SIZE(mlxplat_mlxcpld_hotplug_resources),
+ mlxplat_hotplug, sizeof(*mlxplat_hotplug));
+ if (IS_ERR(priv->pdev_hotplug)) {
+ err = PTR_ERR(priv->pdev_hotplug);
+ goto fail_platform_mux_register;
+ }
+
return 0;
fail_platform_mux_register:
@@ -247,6 +341,8 @@ static void __exit mlxplat_exit(void)
struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev);
int i;
+ platform_device_unregister(priv->pdev_hotplug);
+
for (i = ARRAY_SIZE(mlxplat_mux_data) - 1; i >= 0 ; i--)
platform_device_unregister(priv->pdev_mux[i]);