This driver maps the Lenovo Yoga tablet mode switch to a SW_TABLET_MODE input device. This will make the tablet status available to desktop environments. This patch series is the result of the discussion at https://lore.kernel.org/r/CAG4kvq9US=-NjyXFMzJYu2zCJryJWtOc7FGZbrewpgCDjdAkbg@xxxxxxxxxxxxxx/ I decided to follow-up on the patch Gergo wrote and respond to the review comments to get it merged and available for everyone. Gergo and I have tested this on the Yoga 7 14ARB7, and the Yoga 7 14AIL7 respectively. Additionally, according to reports at https://github.com/lukas-w/yoga-usage-mode, which uses the same WMI devices, this driver should work with: Yoga C940, Ideapad flex 14API, Yoga 9 14IAP7, Yoga 7 14ARB7, etc. The diff since v1 is as follows: v1: https://lore.kernel.org/platform-driver-x86/20230310041726.217447-1-kallmeyeras@xxxxxxxxx/ --- a/drivers/platform/x86/lenovo-ymc.c +++ b/drivers/platform/x86/lenovo-ymc.c @@ -18,7 +18,7 @@ #define LENOVO_YMC_QUERY_GUID "09B0EE6E-C3FD-4243-8DA1-7911FF80BB8C" #define LENOVO_YMC_QUERY_INSTANCE 0 -#define LENOVO_YMC_QUERY_METHOD 0xAB +#define LENOVO_YMC_QUERY_METHOD 0x01 static bool ec_trigger __read_mostly; module_param(ec_trigger, bool, 0644); @@ -103,6 +103,12 @@ static void lenovo_ymc_notify(struct wmi_device *wdev, union acpi_object *data) lenovo_ymc_trigger_ec(wdev, priv); } +static void lenovo_ymc_remove(struct wmi_device *wdev) +{ + struct lenovo_ymc_private *priv = dev_get_drvdata(&wdev->dev); + acpi_dev_put(priv->ec_acpi_dev); +} + static int lenovo_ymc_probe(struct wmi_device *wdev, const void *ctx) { struct input_dev *input_dev; @@ -117,7 +123,7 @@ static int lenovo_ymc_probe(struct wmi_device *wdev, const void *ctx) if (ec_trigger) { pr_debug("Lenovo YMC enable EC triggering.\n"); - priv->ec_acpi_dev = acpi_dev_get_first_match_dev("VCP2004", NULL, -1); + priv->ec_acpi_dev = acpi_dev_get_first_match_dev("VPC2004", NULL, -1); if (!priv->ec_acpi_dev) { dev_err(&wdev->dev, "Could not find EC ACPI device.\n"); return -ENODEV; @@ -151,7 +157,10 @@ static int lenovo_ymc_probe(struct wmi_device *wdev, const void *ctx) priv->input_dev = input_dev; dev_set_drvdata(&wdev->dev, priv); + + // Report the state for the first time on probe lenovo_ymc_trigger_ec(wdev, priv); + lenovo_ymc_notify(wdev, NULL); return 0; } @@ -168,6 +177,7 @@ static struct wmi_driver lenovo_ymc_driver = { .id_table = lenovo_ymc_wmi_id_table, .probe = lenovo_ymc_probe, .notify = lenovo_ymc_notify, + .remove = lenovo_ymc_remove, }; module_wmi_driver(lenovo_ymc_driver); Andrew Kallmeyer (1): platform/x86: Move ideapad ACPI helpers to a new header Gergo Koteles (1): platform/x86: Add driver for Yoga Tablet Mode switch drivers/platform/x86/Kconfig | 10 ++ drivers/platform/x86/Makefile | 1 + drivers/platform/x86/ideapad-laptop.c | 135 +------------------ drivers/platform/x86/ideapad-laptop.h | 152 +++++++++++++++++++++ drivers/platform/x86/lenovo-ymc.c | 187 ++++++++++++++++++++++++++ 5 files changed, 351 insertions(+), 134 deletions(-) create mode 100644 drivers/platform/x86/ideapad-laptop.h create mode 100644 drivers/platform/x86/lenovo-ymc.c -- 2.40.0
