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Message-Id: <1477598154-4459-1-git-send-email-vadimp@mellanox.com>
Date: Thu, 27 Oct 2016 19:55:54 +0000
From: Vadim Pasternak <vadimp@...lanox.com>
To: dvhart@...radead.org, fengguang.wu@...el.com
Cc: davem@...emloft.net, geert@...ux-m68k.org,
akpm@...ux-foundation.org, kvalo@...eaurora.org,
gregkh@...uxfoundation.org, mchehab@...nel.org, linux@...ck-us.net,
linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
jiri@...nulli.us, andriy.shevchenko@...ux.intel.com,
Vadim Pasternak <vadimp@...lanox.com>
Subject: [patch v2 2/2] drivers/platform/x86: add mlxcpld-hotplug driver registration to mlx-platform driver
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@...lanox.com>
v1->v2:
Comments pointed out by Andy:
- Remove "from sender" from the message body;
- Add more information to commit message. (When CPLD spec will be
available at Mellanox portal - MAINTAINERS Web-page info is to
be updated);
- Do not change include order.
---
drivers/platform/x86/mlx-platform.c | 98 ++++++++++++++++++++++++++++++++++++-
1 file changed, 97 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index 86a1356..569d79a 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -39,6 +39,7 @@
#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"
@@ -70,6 +71,7 @@
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 */
@@ -121,7 +123,87 @@ 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)
{
@@ -132,6 +214,7 @@ 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;
};
@@ -145,6 +228,7 @@ 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;
};
@@ -230,6 +314,16 @@ 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:
@@ -248,6 +342,8 @@ 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]);
--
2.1.4
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