drm/i915/adl-n: Enable ADL-N platform

Adding PCI device ids and enabling ADL-N platform.
ADL-N from i915 point of view is subplatform of ADL-P.

BSpec: 68397

Changes since V2:
	- Added version log history
Changes since V1:
	- replace IS_ALDERLAKE_N with IS_ADLP_N - Jani Nikula
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211210051802.4063958-1-tejaskumarx.surendrakumar.upadhyay@intel.com

arch/x86/kernel/early-quirks.c

@@ -554,6 +554,7 @@ static const struct pci_device_id intel_early_ids[] __initconst = {
 	INTEL_RKL_IDS(&gen11_early_ops),
 	INTEL_ADLS_IDS(&gen11_early_ops),
 	INTEL_ADLP_IDS(&gen11_early_ops),
+	INTEL_ADLN_IDS(&gen11_early_ops),
 	INTEL_RPLS_IDS(&gen11_early_ops),
 };
 

drivers/gpu/drm/i915/i915_drv.h

@@ -1267,6 +1267,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 	IS_SUBPLATFORM(dev_priv, INTEL_DG2, INTEL_SUBPLATFORM_G11)
 #define IS_ADLS_RPLS(dev_priv) \
 	IS_SUBPLATFORM(dev_priv, INTEL_ALDERLAKE_S, INTEL_SUBPLATFORM_RPL_S)
+#define IS_ADLP_N(dev_priv) \
+	IS_SUBPLATFORM(dev_priv, INTEL_ALDERLAKE_P, INTEL_SUBPLATFORM_N)
 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
 				    (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
 #define IS_BDW_ULT(dev_priv) \

drivers/gpu/drm/i915/i915_pci.c

@@ -1129,6 +1129,7 @@ static const struct pci_device_id pciidlist[] = {
 	INTEL_RKL_IDS(&rkl_info),
 	INTEL_ADLS_IDS(&adl_s_info),
 	INTEL_ADLP_IDS(&adl_p_info),
+	INTEL_ADLN_IDS(&adl_p_info),
 	INTEL_DG1_IDS(&dg1_info),
 	INTEL_RPLS_IDS(&adl_s_info),
 	{0, 0, 0}

drivers/gpu/drm/i915/intel_device_info.c

@@ -177,6 +177,10 @@ static const u16 subplatform_portf_ids[] = {
 	INTEL_ICL_PORT_F_IDS(0),
 };
 
+static const u16 subplatform_n_ids[] = {
+	INTEL_ADLN_IDS(0),
+};
+
 static const u16 subplatform_rpls_ids[] = {
 	INTEL_RPLS_IDS(0),
 };
@@ -217,6 +221,9 @@ void intel_device_info_subplatform_init(struct drm_i915_private *i915)
 	} else if (find_devid(devid, subplatform_portf_ids,
 			      ARRAY_SIZE(subplatform_portf_ids))) {
 		mask = BIT(INTEL_SUBPLATFORM_PORTF);
+	} else if (find_devid(devid, subplatform_n_ids,
+				ARRAY_SIZE(subplatform_n_ids))) {
+		mask = BIT(INTEL_SUBPLATFORM_N);
 	} else if (find_devid(devid, subplatform_rpls_ids,
 			      ARRAY_SIZE(subplatform_rpls_ids))) {
 		mask = BIT(INTEL_SUBPLATFORM_RPL_S);

drivers/gpu/drm/i915/intel_device_info.h

@@ -113,6 +113,9 @@ enum intel_platform {
 /* ADL-S */
 #define INTEL_SUBPLATFORM_RPL_S	0
 
+/* ADL-P */
+#define INTEL_SUBPLATFORM_N    0
+
 enum intel_ppgtt_type {
 	INTEL_PPGTT_NONE = I915_GEM_PPGTT_NONE,
 	INTEL_PPGTT_ALIASING = I915_GEM_PPGTT_ALIASING,

include/drm/i915_pciids.h

@@ -666,6 +666,12 @@
 	INTEL_VGA_DEVICE(0x46C2, info), \
 	INTEL_VGA_DEVICE(0x46C3, info)
 
+/* ADL-N */
+#define INTEL_ADLN_IDS(info) \
+	INTEL_VGA_DEVICE(0x46D0, info), \
+	INTEL_VGA_DEVICE(0x46D1, info), \
+	INTEL_VGA_DEVICE(0x46D2, info)
+
 /* RPL-S */
 #define INTEL_RPLS_IDS(info) \
 	INTEL_VGA_DEVICE(0xA780, info), \