From: Mark Pearson mpearson-lenovo@squebb.ca
commit 1684878952929e20a864af5df7b498941c750f45 upstream.
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 mpearson-lenovo@squebb.ca Link: https://lore.kernel.org/r/20230505132523.214338-2-mpearson-lenovo@squebb.ca Cc: stable@vger.kernel.org Reviewed-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/platform/x86/thinkpad_acpi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
--- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -10318,6 +10318,7 @@ static atomic_t dytc_ignore_event = ATOM 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(stru 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;