Commit c56beff2 authored by xingtong.wu's avatar xingtong.wu Committed by Hans de Goede
Browse files

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



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: default avatarxingtong.wu <xingtong.wu@siemens.com>
Link: https://lore.kernel.org/r/20230731072148.4781-1-xingtong_wu@163.com


Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent b8af7795

drivers/platform/x86/siemens/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

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

+27 −10
Original line number Diff line number Diff line
@@ -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>");

drivers/platform/x86/siemens/simatic-ipc-batt.c

+2 −1
Original line number Diff line number Diff line
@@ -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])) {