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* [Intel-gfx] [PATCH] drm/i915/bios: add helper for reading SPI
@ 2023-05-12 11:14 Jani Nikula
  2023-05-12 13:52 ` [Intel-gfx] ✗ Fi.CI.BAT: failure for drm/i915/bios: add helper for reading SPI (rev2) Patchwork
                   ` (3 more replies)
  0 siblings, 4 replies; 7+ messages in thread
From: Jani Nikula @ 2023-05-12 11:14 UTC (permalink / raw)
  To: intel-gfx; +Cc: jani.nikula

Add helper for reading SPI to not duplicate the write&read combo
everywhere.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 64eb11a45265..34a397adbd6b 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -3033,6 +3033,13 @@ bool intel_bios_is_valid_vbt(const void *buf, size_t size)
 	return vbt;
 }
 
+static u32 intel_spi_read(struct intel_uncore *uncore, u32 offset)
+{
+	intel_uncore_write(uncore, PRIMARY_SPI_ADDRESS, offset);
+
+	return intel_uncore_read(uncore, PRIMARY_SPI_TRIGGER);
+}
+
 static struct vbt_header *spi_oprom_get_vbt(struct drm_i915_private *i915)
 {
 	u32 count, data, found, store = 0;
@@ -3049,9 +3056,7 @@ static struct vbt_header *spi_oprom_get_vbt(struct drm_i915_private *i915)
 	oprom_offset &= OROM_OFFSET_MASK;
 
 	for (count = 0; count < oprom_size; count += 4) {
-		intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, oprom_offset + count);
-		data = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
-
+		data = intel_spi_read(&i915->uncore, oprom_offset + count);
 		if (data == *((const u32 *)"$VBT")) {
 			found = oprom_offset + count;
 			break;
@@ -3062,20 +3067,16 @@ static struct vbt_header *spi_oprom_get_vbt(struct drm_i915_private *i915)
 		goto err_not_found;
 
 	/* Get VBT size and allocate space for the VBT */
-	intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, found +
-		   offsetof(struct vbt_header, vbt_size));
-	vbt_size = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
+	vbt_size = intel_spi_read(&i915->uncore,
+				  found + offsetof(struct vbt_header, vbt_size));
 	vbt_size &= 0xffff;
 
 	vbt = kzalloc(round_up(vbt_size, 4), GFP_KERNEL);
 	if (!vbt)
 		goto err_not_found;
 
-	for (count = 0; count < vbt_size; count += 4) {
-		intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, found + count);
-		data = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
-		*(vbt + store++) = data;
-	}
+	for (count = 0; count < vbt_size; count += 4)
+		*(vbt + store++) = intel_spi_read(&i915->uncore, found + count);
 
 	if (!intel_bios_is_valid_vbt(vbt, vbt_size))
 		goto err_free_vbt;
-- 
2.39.2


^ permalink raw reply related	[flat|nested] 7+ messages in thread
* [Intel-gfx] [PATCH] drm/i915/bios: add helper for reading SPI
@ 2022-05-03 13:17 Jani Nikula
  0 siblings, 0 replies; 7+ messages in thread
From: Jani Nikula @ 2022-05-03 13:17 UTC (permalink / raw)
  To: intel-gfx; +Cc: jani.nikula

Add helper for reading SPI to not duplicate the write&read combo
everywhere.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 81949c36ab96..4aa9a19a0df0 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2536,6 +2536,13 @@ bool intel_bios_is_valid_vbt(const void *buf, size_t size)
 	return vbt;
 }
 
+static u32 intel_spi_read(struct intel_uncore *uncore, u32 offset)
+{
+	intel_uncore_write(uncore, PRIMARY_SPI_ADDRESS, offset);
+
+	return intel_uncore_read(uncore, PRIMARY_SPI_TRIGGER);
+}
+
 static struct vbt_header *spi_oprom_get_vbt(struct drm_i915_private *i915)
 {
 	u32 count, data, found, store = 0;
@@ -2552,9 +2559,7 @@ static struct vbt_header *spi_oprom_get_vbt(struct drm_i915_private *i915)
 	oprom_offset &= OROM_OFFSET_MASK;
 
 	for (count = 0; count < oprom_size; count += 4) {
-		intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, oprom_offset + count);
-		data = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
-
+		data = intel_spi_read(&i915->uncore, oprom_offset + count);
 		if (data == *((const u32 *)"$VBT")) {
 			found = oprom_offset + count;
 			break;
@@ -2565,20 +2570,16 @@ static struct vbt_header *spi_oprom_get_vbt(struct drm_i915_private *i915)
 		goto err_not_found;
 
 	/* Get VBT size and allocate space for the VBT */
-	intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, found +
-		   offsetof(struct vbt_header, vbt_size));
-	vbt_size = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
+	vbt_size = intel_spi_read(&i915->uncore,
+				  found + offsetof(struct vbt_header, vbt_size));
 	vbt_size &= 0xffff;
 
 	vbt = kzalloc(round_up(vbt_size, 4), GFP_KERNEL);
 	if (!vbt)
 		goto err_not_found;
 
-	for (count = 0; count < vbt_size; count += 4) {
-		intel_uncore_write(&i915->uncore, PRIMARY_SPI_ADDRESS, found + count);
-		data = intel_uncore_read(&i915->uncore, PRIMARY_SPI_TRIGGER);
-		*(vbt + store++) = data;
-	}
+	for (count = 0; count < vbt_size; count += 4)
+		*(vbt + store++) = intel_spi_read(&i915->uncore, found + count);
 
 	if (!intel_bios_is_valid_vbt(vbt, vbt_size))
 		goto err_free_vbt;
-- 
2.30.2


^ permalink raw reply related	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2023-05-15  8:25 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-05-12 11:14 [Intel-gfx] [PATCH] drm/i915/bios: add helper for reading SPI Jani Nikula
2023-05-12 13:52 ` [Intel-gfx] ✗ Fi.CI.BAT: failure for drm/i915/bios: add helper for reading SPI (rev2) Patchwork
2023-05-12 14:04 ` [Intel-gfx] [PATCH] drm/i915/bios: add helper for reading SPI Rodrigo Vivi
2023-05-15  8:25   ` Jani Nikula
2023-05-12 16:01 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915/bios: add helper for reading SPI (rev3) Patchwork
2023-05-12 17:16 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
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2022-05-03 13:17 [Intel-gfx] [PATCH] drm/i915/bios: add helper for reading SPI Jani Nikula

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