From 1684878952929e20a864af5df7b498941c750f45 Mon Sep 17 00:00:00 2001 From: Mark Pearson Date: Fri, 5 May 2023 09:25:23 -0400 Subject: platform/x86: thinkpad_acpi: Add profile force ability There has been a lot of confusion around which platform profiles are supported on various platforms and it would be useful to have a debug method to be able to override the profile mode that is selected. I don't expect this to be used in anything other than debugging in conjunction with Lenovo engineers - but it does give a way to get a system working whilst we wait for either FW fixes, or a driver fix to land upstream, if something is wonky in the mode detection logic Signed-off-by: Mark Pearson Link: https://lore.kernel.org/r/20230505132523.214338-2-mpearson-lenovo@squebb.ca Cc: stable@vger.kernel.org Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede --- drivers/platform/x86/thinkpad_acpi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/platform/x86') diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 7976379887a5..b3808ad77278 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -10318,6 +10318,7 @@ static atomic_t dytc_ignore_event = ATOMIC_INIT(0); static DEFINE_MUTEX(dytc_mutex); static int dytc_capabilities; static bool dytc_mmc_get_available; +static int profile_force; static int convert_dytc_to_profile(int funcmode, int dytcmode, enum platform_profile_option *profile) @@ -10580,6 +10581,21 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) if (err) return err; + /* Check if user wants to override the profile selection */ + if (profile_force) { + switch (profile_force) { + case -1: + dytc_capabilities = 0; + break; + case 1: + dytc_capabilities = BIT(DYTC_FC_MMC); + break; + case 2: + dytc_capabilities = BIT(DYTC_FC_PSC); + break; + } + pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities); + } if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ pr_debug("MMC is supported\n"); /* @@ -11641,6 +11657,9 @@ MODULE_PARM_DESC(uwb_state, "Initial state of the emulated UWB switch"); #endif +module_param(profile_force, int, 0444); +MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC"); + static void thinkpad_acpi_module_exit(void) { struct ibm_struct *ibm, *itmp; -- cgit v1.2.1