Commit 16848789 authored by Mark Pearson's avatar Mark Pearson Committed by Hans de Goede
Browse files

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: default avatarMark 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: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 0c0cd3e2

drivers/platform/x86/thinkpad_acpi.c

+19 −0
Original line number Diff line number Diff line
@@ -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;