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| author |   Matan Ziv-Av <matan@svgalib.org> | 2021-08-18 12:25:14 +0300 |
|---|---|---|
| committer |   Hans de Goede <hdegoede@redhat.com> | 2021-08-20 12:09:41 +0200 |
| commit | 8983bfd58d61ab29ab4114089d1f42e1ee6103a8 (patch) | |
| tree | 00f773a766eda670a5416853324c1719a533e5b4 /drivers/platform/x86 | |
| parent | platform/x86: BIOS SAR driver for Intel M.2 Modem (diff) | |
| download | linux-dev-8983bfd58d61ab29ab4114089d1f42e1ee6103a8.tar.xz linux-dev-8983bfd58d61ab29ab4114089d1f42e1ee6103a8.zip | |
platform/x86: lg-laptop: Support for battery charge limit on newer models
Add support for the difference between various models:
- Use dmi to detect laptop model.
- 2019 and newer models use _wmbb method to set battery charge limit.
Signed-off-by: Matan Ziv-Av <matan@svgalib.org>
Link: https://lore.kernel.org/r/bd6922a412e50c2dcfb7ce24fc8687f577181d65.1629291912.git.matan@svgalib.org
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86')
| -rw-r--r-- | drivers/platform/x86/lg-laptop.c | 75 |
1 files changed, 66 insertions, 9 deletions
diff --git a/drivers/platform/x86/lg-laptop.c b/drivers/platform/x86/lg-laptop.c index 20145b539335..c78efeee1c19 100644 --- a/drivers/platform/x86/lg-laptop.c +++ b/drivers/platform/x86/lg-laptop.c @@ -8,6 +8,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/acpi.h> +#include <linux/dmi.h> #include <linux/input.h> #include <linux/input/sparse-keymap.h> #include <linux/kernel.h> @@ -69,6 +70,8 @@ static u32 inited; #define INIT_INPUT_ACPI 0x04 #define INIT_SPARSE_KEYMAP 0x80 +static int battery_limit_use_wmbb; + static const struct key_entry wmi_keymap[] = { {KE_KEY, 0x70, {KEY_F15} }, /* LG control panel (F1) */ {KE_KEY, 0x74, {KEY_F13} }, /* Touchpad toggle (F5) */ @@ -461,7 +464,10 @@ static ssize_t battery_care_limit_store(struct device *dev, if (value == 100 || value == 80) { union acpi_object *r; - r = lg_wmab(WM_BATT_LIMIT, WM_SET, value); + if (battery_limit_use_wmbb) + r = lg_wmbb(WMBB_BATT_LIMIT, WM_SET, value); + else + r = lg_wmab(WM_BATT_LIMIT, WM_SET, value); if (!r) return -EIO; @@ -479,16 +485,29 @@ static ssize_t battery_care_limit_show(struct device *dev, unsigned int status; union acpi_object *r; - r = lg_wmab(WM_BATT_LIMIT, WM_GET, 0); - if (!r) - return -EIO; + if (battery_limit_use_wmbb) { + r = lg_wmbb(WMBB_BATT_LIMIT, WM_GET, 0); + if (!r) + return -EIO; - if (r->type != ACPI_TYPE_INTEGER) { - kfree(r); - return -EIO; - } + if (r->type != ACPI_TYPE_BUFFER) { + kfree(r); + return -EIO; + } - status = r->integer.value; + status = r->buffer.pointer[0x10]; + } else { + r = lg_wmab(WM_BATT_LIMIT, WM_GET, 0); + if (!r) + return -EIO; + + if (r->type != ACPI_TYPE_INTEGER) { + kfree(r); + return -EIO; + } + + status = r->integer.value; + } kfree(r); if (status != 80 && status != 100) status = 0; @@ -602,6 +621,8 @@ static struct platform_driver pf_driver = { static int acpi_add(struct acpi_device *device) { int ret; + const char *product; + int year = 2017; if (pf_device) return 0; @@ -619,6 +640,42 @@ static int acpi_add(struct acpi_device *device) pr_err("unable to register platform device\n"); goto out_platform_registered; } + product = dmi_get_system_info(DMI_PRODUCT_NAME); + if (strlen(product) > 4) + switch (product[4]) { + case '5': + case '6': + year = 2016; + break; + case '7': + year = 2017; + break; + case '8': + year = 2018; + break; + case '9': + year = 2019; + break; + case '0': + if (strlen(product) > 5) + switch (product[5]) { + case 'N': + year = 2020; + break; + case 'P': + year = 2021; + break; + default: + year = 2022; + } + break; + default: + year = 2019; + } + pr_info("product: %s year: %d\n", product, year); + + if (year >= 2019) + battery_limit_use_wmbb = 1; ret = sysfs_create_group(&pf_device->dev.kobj, &dev_attribute_group); if (ret) |