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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 <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>
This commit is contained in:
Mark Pearson 2023-05-05 09:25:23 -04:00 committed by Hans de Goede
parent 0c0cd3e25a
commit 1684878952
1 changed files with 19 additions and 0 deletions
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19
drivers/platform/x86/thinkpad_acpi.c
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@ -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;