diff options
Diffstat (limited to 'SOURCES/0001-platform-x86-thinkpad_acpi-lap-or-desk-mode-interfac.patch')
| -rw-r--r-- | SOURCES/0001-platform-x86-thinkpad_acpi-lap-or-desk-mode-interfac.patch | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/SOURCES/0001-platform-x86-thinkpad_acpi-lap-or-desk-mode-interfac.patch b/SOURCES/0001-platform-x86-thinkpad_acpi-lap-or-desk-mode-interfac.patch deleted file mode 100644 index 3a15ae0..0000000 --- a/SOURCES/0001-platform-x86-thinkpad_acpi-lap-or-desk-mode-interfac.patch +++ /dev/null @@ -1,202 +0,0 @@ -From acf7f4a59114471c3964f118564fe8e7a6f34bb8 Mon Sep 17 00:00:00 2001 -From: Mark Pearson <markpearson@lenovo.com> -Date: Thu, 2 Jul 2020 21:23:53 -0400 -Subject: [PATCH] platform/x86: thinkpad_acpi: lap or desk mode interface - -Newer Lenovo Thinkpad platforms have support to identify whether the -system is on-lap or not using an ACPI DYTC event from the firmware. - -This patch provides the ability to retrieve the current mode via sysfs -entrypoints and will be used by userspace for thermal mode and WWAN -functionality - -Co-developed-by: Nitin Joshi <njoshi1@lenovo.com> -Signed-off-by: Nitin Joshi <njoshi1@lenovo.com> -Reviewed-by: Sugumaran <slacshiminar@lenovo.com> -Reviewed-by: Bastien Nocera <bnocera@redhat.com> -Signed-off-by: Mark Pearson <markpearson@lenovo.com> -Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> ---- - .../admin-guide/laptops/thinkpad-acpi.rst | 15 +++ - drivers/platform/x86/thinkpad_acpi.c | 111 +++++++++++++++++- - 2 files changed, 124 insertions(+), 2 deletions(-) - -diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst -index 822907dcc845..99066aa8d97b 100644 ---- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst -+++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst -@@ -50,6 +50,7 @@ detailed description): - - WAN enable and disable - - UWB enable and disable - - LCD Shadow (PrivacyGuard) enable and disable -+ - Lap mode sensor - - A compatibility table by model and feature is maintained on the web - site, http://ibm-acpi.sf.net/. I appreciate any success or failure -@@ -1432,6 +1433,20 @@ The first command ensures the best viewing angle and the latter one turns - on the feature, restricting the viewing angles. - - -+DYTC Lapmode sensor -+------------------ -+ -+sysfs: dytc_lapmode -+ -+Newer thinkpads and mobile workstations have the ability to determine if -+the device is in deskmode or lapmode. This feature is used by user space -+to decide if WWAN transmission can be increased to maximum power and is -+also useful for understanding the different thermal modes available as -+they differ between desk and lap mode. -+ -+The property is read-only. If the platform doesn't have support the sysfs -+class is not created. -+ - EXPERIMENTAL: UWB - ----------------- - -diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c -index 0f6fceda5fc0..7fee3c1c2418 100644 ---- a/drivers/platform/x86/thinkpad_acpi.c -+++ b/drivers/platform/x86/thinkpad_acpi.c -@@ -4030,8 +4030,8 @@ static bool hotkey_notify_6xxx(const u32 hkey, - return true; - case TP_HKEY_EV_THM_CSM_COMPLETED: - pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); -- /* recommended action: do nothing, we don't have -- * Lenovo ATM information */ -+ /* Thermal event - pass on to event handler */ -+ tpacpi_driver_event(hkey); - return true; - case TP_HKEY_EV_THM_TRANSFM_CHANGED: - pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); -@@ -9803,6 +9803,105 @@ static struct ibm_struct lcdshadow_driver_data = { - .write = lcdshadow_write, - }; - -+/************************************************************************* -+ * DYTC subdriver, for the Lenovo lapmode feature -+ */ -+ -+#define DYTC_CMD_GET 2 /* To get current IC function and mode */ -+#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ -+ -+static bool dytc_lapmode; -+ -+static void dytc_lapmode_notify_change(void) -+{ -+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); -+} -+ -+static int dytc_command(int command, int *output) -+{ -+ acpi_handle dytc_handle; -+ -+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { -+ /* Platform doesn't support DYTC */ -+ return -ENODEV; -+ } -+ if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) -+ return -EIO; -+ return 0; -+} -+ -+static int dytc_lapmode_get(bool *state) -+{ -+ int output, err; -+ -+ err = dytc_command(DYTC_CMD_GET, &output); -+ if (err) -+ return err; -+ *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; -+ return 0; -+} -+ -+static void dytc_lapmode_refresh(void) -+{ -+ bool new_state; -+ int err; -+ -+ err = dytc_lapmode_get(&new_state); -+ if (err || (new_state == dytc_lapmode)) -+ return; -+ -+ dytc_lapmode = new_state; -+ dytc_lapmode_notify_change(); -+} -+ -+/* sysfs lapmode entry */ -+static ssize_t dytc_lapmode_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ return snprintf(buf, PAGE_SIZE, "%d\n", dytc_lapmode); -+} -+ -+static DEVICE_ATTR_RO(dytc_lapmode); -+ -+static struct attribute *dytc_attributes[] = { -+ &dev_attr_dytc_lapmode.attr, -+ NULL, -+}; -+ -+static const struct attribute_group dytc_attr_group = { -+ .attrs = dytc_attributes, -+}; -+ -+static int tpacpi_dytc_init(struct ibm_init_struct *iibm) -+{ -+ int err; -+ -+ err = dytc_lapmode_get(&dytc_lapmode); -+ /* If support isn't available (ENODEV) then don't return an error -+ * but just don't create the sysfs group -+ */ -+ if (err == -ENODEV) -+ return 0; -+ /* For all other errors we can flag the failure */ -+ if (err) -+ return err; -+ -+ /* Platform supports this feature - create the group */ -+ err = sysfs_create_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); -+ return err; -+} -+ -+static void dytc_exit(void) -+{ -+ sysfs_remove_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); -+} -+ -+static struct ibm_struct dytc_driver_data = { -+ .name = "dytc", -+ .exit = dytc_exit, -+}; -+ - /**************************************************************************** - **************************************************************************** - * -@@ -9850,6 +9949,10 @@ static void tpacpi_driver_event(const unsigned int hkey_event) - - mutex_unlock(&kbdlight_mutex); - } -+ -+ if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) -+ dytc_lapmode_refresh(); -+ - } - - static void hotkey_driver_event(const unsigned int scancode) -@@ -10288,6 +10391,10 @@ static struct ibm_init_struct ibms_init[] __initdata = { - .init = tpacpi_lcdshadow_init, - .data = &lcdshadow_driver_data, - }, -+ { -+ .init = tpacpi_dytc_init, -+ .data = &dytc_driver_data, -+ }, - }; - - static int __init set_ibm_param(const char *val, const struct kernel_param *kp) --- -2.26.2 - |