[PATCH v3 3/3] drm/xe/soc_remapper: Add system controller config for SoC remapper

[Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>]

Define system controller config bits and helpers for SoC remapper.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>

v2: (Badal)
- Add kernel doc for function
---
 drivers/gpu/drm/xe/regs/xe_soc_remapper_regs.h |  1 +
 drivers/gpu/drm/xe/xe_soc_remapper.c           | 13 +++++++++++++
 drivers/gpu/drm/xe/xe_soc_remapper.h           |  1 +
 3 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/xe/regs/xe_soc_remapper_regs.h b/drivers/gpu/drm/xe/regs/xe_soc_remapper_regs.h
index 9edf234227a9..be0eb37e73ad 100644
--- a/drivers/gpu/drm/xe/regs/xe_soc_remapper_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_soc_remapper_regs.h
@@ -9,5 +9,6 @@
 
 #define SG_REMAP_INDEX1			XE_REG(SOC_BASE + 0x08)
 #define   SG_REMAP_TELEM_MASK		REG_GENMASK(31, 24)
+#define   SG_REMAP_SYSCTRL_MASK		REG_GENMASK(23, 16)
 
 #endif
diff --git a/drivers/gpu/drm/xe/xe_soc_remapper.c b/drivers/gpu/drm/xe/xe_soc_remapper.c
index d28fd9f3c253..273e34c4183a 100644
--- a/drivers/gpu/drm/xe/xe_soc_remapper.c
+++ b/drivers/gpu/drm/xe/xe_soc_remapper.c
@@ -27,6 +27,19 @@ void xe_soc_remapper_set_telem_region(struct xe_device *xe, u32 index)
 				   REG_FIELD_PREP(SG_REMAP_TELEM_MASK, index));
 }
 
+/**
+ * xe_soc_remapper_set_sysctrl_region() - Select the system controller function
+ * @xe: Pointer to xe device.
+ * @index: Index of the function to be accessed.
+ *
+ * Selects a specific system controller function based on the index passed.
+ */
+void xe_soc_remapper_set_sysctrl_region(struct xe_device *xe, u32 index)
+{
+	xe_soc_remapper_set_region(xe, SG_REMAP_INDEX1, SG_REMAP_SYSCTRL_MASK,
+				   REG_FIELD_PREP(SG_REMAP_SYSCTRL_MASK, index));
+}
+
 /**
  * xe_soc_remapper_init() - Initialize SoC remapper
  * @xe: Pointer to xe device.
diff --git a/drivers/gpu/drm/xe/xe_soc_remapper.h b/drivers/gpu/drm/xe/xe_soc_remapper.h
index c7bee284405b..137c9f6f3bbe 100644
--- a/drivers/gpu/drm/xe/xe_soc_remapper.h
+++ b/drivers/gpu/drm/xe/xe_soc_remapper.h
@@ -10,5 +10,6 @@
 
 int xe_soc_remapper_init(struct xe_device *xe);
 void xe_soc_remapper_set_telem_region(struct xe_device *xe, u32 index);
+void xe_soc_remapper_set_sysctrl_region(struct xe_device *xe, u32 index);
 
 #endif
-- 
2.43.0