From 3fd53262f0dd81361efcb5ccba8312525ee6c645 Mon Sep 17 00:00:00 2001
From: Mahesh Kumar <mahesh1.kumar@intel.com>
Date: Thu, 11 Jul 2019 10:31:11 -0700
Subject: drm/i915/tgl: Add gmbus gpio pin to port mapping
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: 3fd53262f0dd81361efcb5ccba8312525ee6c645
Patch-mainline: v5.4-rc1
References: bsc#1152489
Add default GPIO pin mapping for all ports. Tiger Lake has 3 combophy
ports and 6 TC ports, gpio pin1-3 are mapped to combophy & pin9-14 are
mapped to TC ports.
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190711173115.28296-18-lucas.demarchi@intel.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/display/intel_display.h | 2 ++
drivers/gpu/drm/i915/display/intel_gmbus.c | 20 ++++++++++++++++++--
drivers/gpu/drm/i915/i915_reg.h | 4 +++-
3 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index 92931dc26470..67743eea4a50 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -45,6 +45,8 @@ enum i915_gpio {
GPIOK,
GPIOL,
GPIOM,
+ GPION,
+ GPIOO,
};
/*
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.c b/drivers/gpu/drm/i915/display/intel_gmbus.c
index 4f6a9bd5af47..b42c79aea61a 100644
--- a/drivers/gpu/drm/i915/display/intel_gmbus.c
+++ b/drivers/gpu/drm/i915/display/intel_gmbus.c
@@ -94,11 +94,25 @@ static const struct gmbus_pin gmbus_pins_mcc[] = {
[GMBUS_PIN_9_TC1_ICP] = { "dpc", GPIOJ },
};
+static const struct gmbus_pin gmbus_pins_tgp[] = {
+ [GMBUS_PIN_1_BXT] = { "dpa", GPIOB },
+ [GMBUS_PIN_2_BXT] = { "dpb", GPIOC },
+ [GMBUS_PIN_3_BXT] = { "dpc", GPIOD },
+ [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 },
+ [GMBUS_PIN_13_TC5_TGP] = { "tc5", GPION },
+ [GMBUS_PIN_14_TC6_TGP] = { "tc6", GPIOO },
+};
+
/* pin is expected to be valid */
static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *dev_priv,
unsigned int pin)
{
- if (HAS_PCH_MCC(dev_priv))
+ if (HAS_PCH_TGP(dev_priv))
+ return &gmbus_pins_tgp[pin];
+ else if (HAS_PCH_MCC(dev_priv))
return &gmbus_pins_mcc[pin];
else if (HAS_PCH_ICP(dev_priv))
return &gmbus_pins_icp[pin];
@@ -119,7 +133,9 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
{
unsigned int size;
- if (HAS_PCH_MCC(dev_priv))
+ if (HAS_PCH_TGP(dev_priv))
+ size = ARRAY_SIZE(gmbus_pins_tgp);
+ else if (HAS_PCH_MCC(dev_priv))
size = ARRAY_SIZE(gmbus_pins_mcc);
else if (HAS_PCH_ICP(dev_priv))
size = ARRAY_SIZE(gmbus_pins_icp);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index ad96c5b4975c..62ac8a119602 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3254,8 +3254,10 @@ enum i915_power_well_id {
#define GMBUS_PIN_10_TC2_ICP 10
#define GMBUS_PIN_11_TC3_ICP 11
#define GMBUS_PIN_12_TC4_ICP 12
+#define GMBUS_PIN_13_TC5_TGP 13
+#define GMBUS_PIN_14_TC6_TGP 14
-#define GMBUS_NUM_PINS 13 /* including 0 */
+#define GMBUS_NUM_PINS 15 /* including 0 */
#define GMBUS1 _MMIO(dev_priv->gpio_mmio_base + 0x5104) /* command/status */
#define GMBUS_SW_CLR_INT (1 << 31)
#define GMBUS_SW_RDY (1 << 30)
--
2.28.0