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[02/10] drm/i915/spi: add intel_spi_region map

Message ID 20230910123949.1251964-3-alexander.usyskin@intel.com
State New
Headers show
Series drm/i915/spi: spi access for discrete graphics | expand

Commit Message

Usyskin, Alexander Sept. 10, 2023, 12:39 p.m. UTC 
From: Tomas Winkler <tomas.winkler@intel.com>

Add the dGFX spi region map and convey it via auxiliary device
to the spi child device.

CC: Rodrigo Vivi <rodrigo.vivi@intel.com>
CC: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
 drivers/gpu/drm/i915/spi/intel_spi.c | 8 ++++++++
 drivers/gpu/drm/i915/spi/intel_spi.h | 6 ++++++
 2 files changed, 14 insertions(+)
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Patch

diff --git a/drivers/gpu/drm/i915/spi/intel_spi.c b/drivers/gpu/drm/i915/spi/intel_spi.c
index 9eb5ab6bc4b9..c697ca226e34 100644
--- a/drivers/gpu/drm/i915/spi/intel_spi.c
+++ b/drivers/gpu/drm/i915/spi/intel_spi.c
@@ -10,6 +10,13 @@ 
 
 #define GEN12_GUNIT_SPI_SIZE 0x80
 
+static const struct i915_spi_region regions[I915_SPI_REGIONS] = {
+	[0] = { .name = "DESCRIPTOR", },
+	[2] = { .name = "GSC", },
+	[11] = { .name = "OptionROM", },
+	[12] = { .name = "DAM", },
+};
+
 static void i915_spi_release_dev(struct device *dev)
 {
 }
@@ -29,6 +36,7 @@  void intel_spi_init(struct intel_spi *spi, struct drm_i915_private *dev_priv)
 	spi->bar.end = spi->bar.start + GEN12_GUNIT_SPI_SIZE - 1;
 	spi->bar.flags = IORESOURCE_MEM;
 	spi->bar.desc = IORES_DESC_NONE;
+	spi->regions = regions;
 
 	aux_dev->name = "spi";
 	aux_dev->id = (pci_domain_nr(pdev->bus) << 16) |
diff --git a/drivers/gpu/drm/i915/spi/intel_spi.h b/drivers/gpu/drm/i915/spi/intel_spi.h
index a58bf79dcbc9..1ecf1a8581b4 100644
--- a/drivers/gpu/drm/i915/spi/intel_spi.h
+++ b/drivers/gpu/drm/i915/spi/intel_spi.h
@@ -10,10 +10,16 @@ 
 
 struct drm_i915_private;
 
+#define I915_SPI_REGIONS 13
+struct i915_spi_region {
+	const char *name;
+};
+
 struct intel_spi {
 	struct auxiliary_device aux_dev;
 	struct drm_i915_private *i915;
 	struct resource bar;
+	const struct i915_spi_region *regions;
 };
 
 #define auxiliary_dev_to_intel_spi_dev(auxiliary_dev) \