diff options
| author | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2022-09-02 09:03:36 +0300 |
|---|---|---|
| committer | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2022-09-13 00:53:33 +0300 |
| commit | e5d464d02f0681c4677c0bb5f6c0a70c8be78ab6 (patch) | |
| tree | e3b708bfd7a548f61102e6f5b449a3bc70bc1498 /drivers/gpu/drm/i915/display | |
| parent | f9e932a83ac0bb18ff71014d912af9c8e4d8eab0 (diff) | |
| download | linux-e5d464d02f0681c4677c0bb5f6c0a70c8be78ab6.tar.xz | |
drm/i915/mtl: Add gmbus and gpio support
Add tables to map the GMBUS pin pairs to GPIO registers and port to DDC.
From spec we have registers GPIO_CTL[1-5] mapped to native display phys and
GPIO_CTL[9-12] are mapped to TC ports.
v2:
- Drop unused GPIO pins(MattR)
BSpec: 49306
Cc: Matt Roper <matthew.d.roper@intel.com>
Original Author: Brian J Lovin
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220902060342.151824-6-radhakrishna.sripada@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_gmbus.c | 15 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_gmbus.h | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.c b/drivers/gpu/drm/i915/display/intel_gmbus.c index 6f6cfccad477..74443f57f62d 100644 --- a/drivers/gpu/drm/i915/display/intel_gmbus.c +++ b/drivers/gpu/drm/i915/display/intel_gmbus.c @@ -117,6 +117,18 @@ static const struct gmbus_pin gmbus_pins_dg2[] = { [GMBUS_PIN_9_TC1_ICP] = { "tc1", GPIOJ }, }; +static const struct gmbus_pin gmbus_pins_mtp[] = { + [GMBUS_PIN_1_BXT] = { "dpa", GPIOB }, + [GMBUS_PIN_2_BXT] = { "dpb", GPIOC }, + [GMBUS_PIN_3_BXT] = { "dpc", GPIOD }, + [GMBUS_PIN_4_CNP] = { "dpd", GPIOE }, + [GMBUS_PIN_5_MTP] = { "dpe", GPIOF }, + [GMBUS_PIN_9_TC1_ICP] = { "tc1", GPIOJ }, + [GMBUS_PIN_10_TC2_ICP] = { "tc2", GPIOK }, + [GMBUS_PIN_11_TC3_ICP] = { "tc3", GPIOL }, + [GMBUS_PIN_12_TC4_ICP] = { "tc4", GPIOM }, +}; + static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *i915, unsigned int pin) { @@ -129,6 +141,9 @@ static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *i915, } else if (INTEL_PCH_TYPE(i915) >= PCH_DG1) { pins = gmbus_pins_dg1; size = ARRAY_SIZE(gmbus_pins_dg1); + } else if (INTEL_PCH_TYPE(i915) >= PCH_MTP) { + pins = gmbus_pins_mtp; + size = ARRAY_SIZE(gmbus_pins_mtp); } else if (INTEL_PCH_TYPE(i915) >= PCH_ICP) { pins = gmbus_pins_icp; size = ARRAY_SIZE(gmbus_pins_icp); diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.h b/drivers/gpu/drm/i915/display/intel_gmbus.h index 8edc2e99cf53..20f704bd4e70 100644 --- a/drivers/gpu/drm/i915/display/intel_gmbus.h +++ b/drivers/gpu/drm/i915/display/intel_gmbus.h @@ -24,6 +24,7 @@ struct i2c_adapter; #define GMBUS_PIN_2_BXT 2 #define GMBUS_PIN_3_BXT 3 #define GMBUS_PIN_4_CNP 4 +#define GMBUS_PIN_5_MTP 5 #define GMBUS_PIN_9_TC1_ICP 9 #define GMBUS_PIN_10_TC2_ICP 10 #define GMBUS_PIN_11_TC3_ICP 11 |