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>

diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index cb6199e..97b4c3a 100644 (file)
--- 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]);