Add table to map the GMBUS pin pairs to GPIO registers and port to DDC
mapping for ADL_S as per below Bspec.
Bspec:20124, 53597.
Cc: Aditya Swarup <aditya.swarup@xxxxxxxxx>
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Signed-off-by: Anand Moon <anandx.ram.moon@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_gmbus.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.c b/drivers/gpu/drm/i915/display/intel_gmbus.c
index 0c952e1d720e..58b8e42d4f90 100644
--- a/drivers/gpu/drm/i915/display/intel_gmbus.c
+++ b/drivers/gpu/drm/i915/display/intel_gmbus.c
@@ -52,6 +52,14 @@ static const struct gmbus_pin gmbus_pins[] = {
[GMBUS_PIN_DPD] = { "dpd", GPIOF },
};
+static const struct gmbus_pin gmbus_pins_adls[] = {
+ [GMBUS_PIN_1_BXT] = { "edp", GPIOA },
+ [GMBUS_PIN_9_TC1_ICP] = { "tc1", GPIOD },
+ [GMBUS_PIN_10_TC2_ICP] = { "tc2", GPIOE },
+ [GMBUS_PIN_11_TC3_ICP] = { "tc3", GPIOF },
+ [GMBUS_PIN_12_TC4_ICP] = { "tc4", GPIOG },
+};
+
static const struct gmbus_pin gmbus_pins_bdw[] = {
[GMBUS_PIN_VGADDC] = { "vga", GPIOA },
[GMBUS_PIN_DPC] = { "dpc", GPIOD },
@@ -101,7 +109,9 @@ static const struct gmbus_pin gmbus_pins_dg1[] = {
static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *dev_priv,
unsigned int pin)
{
- if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
+ if (INTEL_PCH_TYPE(dev_priv) == PCH_ADP)
+ return &gmbus_pins_adls[pin];
+ else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
return &gmbus_pins_dg1[pin];
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
return &gmbus_pins_icp[pin];
@@ -122,7 +132,9 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
{
unsigned int size;
- if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
+ if (INTEL_PCH_TYPE(dev_priv) == PCH_ADP)
+ size = ARRAY_SIZE(gmbus_pins_adls);
+ else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
size = ARRAY_SIZE(gmbus_pins_dg1);
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
size = ARRAY_SIZE(gmbus_pins_icp);
--
2.30.0
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