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drm/i915/gmbus: Add gmbus_pins_lpt_lp[]

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LPT/WPT-LP don't have as many GPIO pins as the -H variants.
Add proper mapping for the -LP PCHs so that we can't end up
poking at non-existent GPIOs.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260623125111.6632-4-ville.syrjala@linux.intel.com
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
This commit is contained in:
Ville Syrjälä 2026-06-23 15:51:08 +03:00
parent ace3774277
commit 1c626c95b4
1 changed files with 11 additions and 3 deletions
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14
drivers/gpu/drm/i915/display/intel_gmbus.c
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@ -86,13 +86,18 @@ static const struct gmbus_pin gmbus_pins[] = {
[GMBUS_PIN_DPD] = { "dpd", GPIO_5 },
};
static const struct gmbus_pin gmbus_pins_lpt[] = {
static const struct gmbus_pin gmbus_pins_lpt_h[] = {
[GMBUS_PIN_VGADDC] = { "vga", GPIO_0 },
[GMBUS_PIN_DPC] = { "dpc", GPIO_3 },
[GMBUS_PIN_DPB] = { "dpb", GPIO_4 },
[GMBUS_PIN_DPD] = { "dpd", GPIO_5 },
};
static const struct gmbus_pin gmbus_pins_lpt_lp[] = {
[GMBUS_PIN_DPC] = { "dpc", GPIO_3 },
[GMBUS_PIN_DPB] = { "dpb", GPIO_4 },
};
static const struct gmbus_pin gmbus_pins_skl[] = {
[GMBUS_PIN_DPC] = { "dpc", GPIO_3 },
[GMBUS_PIN_DPB] = { "dpb", GPIO_4 },
@ -178,9 +183,12 @@ static const struct gmbus_pin *get_gmbus_pin(struct intel_display *display,
} else if (DISPLAY_VER(display) == 9) {
pins = gmbus_pins_skl;
size = ARRAY_SIZE(gmbus_pins_skl);
} else if (HAS_PCH_LPT_LP(display)) {
pins = gmbus_pins_lpt_lp;
size = ARRAY_SIZE(gmbus_pins_lpt_lp);
} else if (HAS_PCH_LPT(display)) {
pins = gmbus_pins_lpt;
size = ARRAY_SIZE(gmbus_pins_lpt);
pins = gmbus_pins_lpt_h;
size = ARRAY_SIZE(gmbus_pins_lpt_h);
} else {
pins = gmbus_pins;
size = ARRAY_SIZE(gmbus_pins);