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platform/x86: simatic-ipc: add auto-loading of hwmon modules

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In order to know which hwmon modules to load one would have to usually
first probe from user-land i.e. with sensors-detect and create a config
for each machine. But here we know exactly what machines we are dealing
with, so we can request those howmon modules without user-mode detection
and config files.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Link: https://lore.kernel.org/r/20230713144832.26473-3-henning.schild@siemens.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Henning Schild
2023-07-13 16:48:31 +02:00
committed by Hans de Goede
parent 8529673adc
commit 2533671f90
1 changed files with 53 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
drivers/platform/x86/simatic-ipc.c
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@@ -2,7 +2,7 @@
/*
* Siemens SIMATIC IPC platform driver
*
* Copyright (c) Siemens AG, 2018-2021
* Copyright (c) Siemens AG, 2018-2023
*
* Authors:
* Henning Schild <henning.schild@siemens.com>
@@ -33,36 +33,51 @@ static const struct dmi_system_id simatic_ipc_whitelist[] = {
static struct simatic_ipc_platform platform_data;
#define SIMATIC_IPC_MAX_EXTRA_MODULES 1
static struct {
u32 station_id;
u8 led_mode;
u8 wdt_mode;
u8 batt_mode;
char *extra_modules[SIMATIC_IPC_MAX_EXTRA_MODULES];
} device_modes[] = {
{SIMATIC_IPC_IPC127E,
SIMATIC_IPC_DEVICE_127E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_127E},
SIMATIC_IPC_DEVICE_127E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_127E,
{ "emc1403" }},
{SIMATIC_IPC_IPC227D,
SIMATIC_IPC_DEVICE_227D, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE},
SIMATIC_IPC_DEVICE_227D, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403" }},
{SIMATIC_IPC_IPC227E,
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E},
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
{ "emc1403" }},
{SIMATIC_IPC_IPC227G,
SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G},
SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G,
{ "nct6775" }},
{SIMATIC_IPC_IPC277G,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G},
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G,
{ "nct6775" }},
{SIMATIC_IPC_IPC277E,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E},
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
{ "emc1403" }},
{SIMATIC_IPC_IPC427D,
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE},
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403" }},
{SIMATIC_IPC_IPC427E,
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE},
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403" }},
{SIMATIC_IPC_IPC477E,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE},
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403" }},
{SIMATIC_IPC_IPCBX_39A,
SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_BX_39A},
SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_BX_39A,
{ "nct6775" }},
{SIMATIC_IPC_IPCPX_39A,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_BX_39A},
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_BX_39A,
{ "nct6775" }},
{SIMATIC_IPC_IPCBX_21A,
SIMATIC_IPC_DEVICE_BX_21A, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_21A},
SIMATIC_IPC_DEVICE_BX_21A, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_21A,
{ "emc1403" }},
};
static int register_platform_devices(u32 station_id)
@@ -152,6 +167,29 @@ static int register_platform_devices(u32 station_id)
return 0;
}
static void request_additional_modules(u32 station_id)
{
char **extra_modules = NULL;
int i;
for (i = 0; i < ARRAY_SIZE(device_modes); i++) {
if (device_modes[i].station_id == station_id) {
extra_modules = device_modes[i].extra_modules;
break;
}
}
if (!extra_modules)
return;
for (i = 0; i < SIMATIC_IPC_MAX_EXTRA_MODULES; i++) {
if (extra_modules[i])
request_module(extra_modules[i]);
else
break;
}
}
static int __init simatic_ipc_init_module(void)
{
const struct dmi_system_id *match;
@@ -169,6 +207,8 @@ static int __init simatic_ipc_init_module(void)
return 0;
}
request_additional_modules(station_id);
return register_platform_devices(station_id);
}