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platform/x86/siemens: simatic-ipc-batt: add support for module BX-59A

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This is used for the Siemens Simatic IPC BX-59A, which
can monitor the voltage of the CMOS battery with two bits
that indicate low or empty state

Signed-off-by: xingtong.wu <xingtong.wu@siemens.com>
Link: https://lore.kernel.org/r/20230731072148.4781-1-xingtong_wu@163.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
xingtong.wu 2023-07-31 15:21:48 +08:00 committed by Hans de Goede
parent b8af779519
commit c56beff203
3 changed files with 30 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/platform/x86/siemens/Kconfig
View file

@ -54,6 +54,7 @@ config SIEMENS_SIMATIC_IPC_BATT_F7188X
tristate "CMOS Battery monitoring for Simatic IPCs based on Nuvoton GPIO"
default SIEMENS_SIMATIC_IPC_BATT
depends on GPIO_F7188X
depends on PINCTRL_ALDERLAKE
depends on SIEMENS_SIMATIC_IPC_BATT
help
This option enables CMOS battery monitoring for Simatic Industrial PCs

37
drivers/platform/x86/siemens/simatic-ipc-batt-f7188x.c
View file

@ -17,6 +17,8 @@
#include "simatic-ipc-batt.h"
static struct gpiod_lookup_table *batt_lookup_table;
static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_227g = {
.table = {
GPIO_LOOKUP_IDX("gpio-f7188x-7", 6, NULL, 0, GPIO_ACTIVE_HIGH),
@ -34,24 +36,39 @@ static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_39a = {
},
};
static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_59a = {
.table = {
GPIO_LOOKUP_IDX("gpio-f7188x-7", 6, NULL, 0, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX("gpio-f7188x-7", 5, NULL, 1, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX("INTC1056:00", 438, NULL, 2, GPIO_ACTIVE_HIGH),
{} /* Terminating entry */
}
};
static int simatic_ipc_batt_f7188x_remove(struct platform_device *pdev)
{
const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
if (plat->devmode == SIMATIC_IPC_DEVICE_227G)
return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_227g);
return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_39a);
return simatic_ipc_batt_remove(pdev, batt_lookup_table);
}
static int simatic_ipc_batt_f7188x_probe(struct platform_device *pdev)
{
const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
if (plat->devmode == SIMATIC_IPC_DEVICE_227G)
return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_227g);
switch (plat->devmode) {
case SIMATIC_IPC_DEVICE_227G:
batt_lookup_table = &simatic_ipc_batt_gpio_table_227g;
break;
case SIMATIC_IPC_DEVICE_BX_39A:
batt_lookup_table = &simatic_ipc_batt_gpio_table_bx_39a;
break;
case SIMATIC_IPC_DEVICE_BX_59A:
batt_lookup_table = &simatic_ipc_batt_gpio_table_bx_59a;
break;
default:
return -ENODEV;
}
return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_bx_39a);
return simatic_ipc_batt_probe(pdev, batt_lookup_table);
}
static struct platform_driver simatic_ipc_batt_driver = {
@ -66,5 +83,5 @@ module_platform_driver(simatic_ipc_batt_driver);
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" KBUILD_MODNAME);
MODULE_SOFTDEP("pre: simatic-ipc-batt gpio_f7188x platform:elkhartlake-pinctrl");
MODULE_SOFTDEP("pre: simatic-ipc-batt gpio_f7188x platform:elkhartlake-pinctrl platform:alderlake-pinctrl");
MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");

3
drivers/platform/x86/siemens/simatic-ipc-batt.c
View file

@ -169,6 +169,7 @@ int simatic_ipc_batt_probe(struct platform_device *pdev, struct gpiod_lookup_tab
case SIMATIC_IPC_DEVICE_227G:
case SIMATIC_IPC_DEVICE_BX_39A:
case SIMATIC_IPC_DEVICE_BX_21A:
case SIMATIC_IPC_DEVICE_BX_59A:
table->dev_id = dev_name(dev);
gpiod_add_lookup_table(table);
break;
@ -193,7 +194,7 @@ int simatic_ipc_batt_probe(struct platform_device *pdev, struct gpiod_lookup_tab
if (table->table[2].key) {
flags = GPIOD_OUT_HIGH;
if (priv.devmode == SIMATIC_IPC_DEVICE_BX_21A)
if (priv.devmode == SIMATIC_IPC_DEVICE_BX_21A || SIMATIC_IPC_DEVICE_BX_59A)
flags = GPIOD_OUT_LOW;
priv.gpios[2] = devm_gpiod_get_index(dev, "CMOSBattery meter", 2, flags);
if (IS_ERR(priv.gpios[2])) {