[PATCH v2 1/4] spi: geni-qcom: Improve target mode allocation by using proper allocation functions

Praveen Talari posted 4 patches 5 days, 6 hours ago
[PATCH v2 1/4] spi: geni-qcom: Improve target mode allocation by using proper allocation functions
Posted by Praveen Talari 5 days, 6 hours ago
The current implementation always allocates a host controller and sets the
target flag later when the "spi-slave" device tree property is present.
This approach is suboptimal as it doesn't utilize the dedicated allocation
functions designed for target mode.

Use devm_spi_alloc_target() when "spi-slave" device tree property is
present, otherwise use devm_spi_alloc_host(). This replaces the previous
approach of always allocating a host controller and setting target flag
later.

Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
---
v1->v2
konrad
- Placed changes where host is allocated.
---
 drivers/spi/spi-geni-qcom.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index 0e5fd9df1a8f..f886a9ba56e6 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -1033,7 +1033,11 @@ static int spi_geni_probe(struct platform_device *pdev)
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 
-	spi = devm_spi_alloc_host(dev, sizeof(*mas));
+	if (device_property_read_bool(dev, "spi-slave"))
+		spi = devm_spi_alloc_target(dev, sizeof(*mas));
+	else
+		spi = devm_spi_alloc_host(dev, sizeof(*mas));
+
 	if (!spi)
 		return -ENOMEM;
 
@@ -1087,9 +1091,6 @@ static int spi_geni_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (device_property_read_bool(&pdev->dev, "spi-slave"))
-		spi->target = true;
-
 	/* Set the bus quota to a reasonable value for register access */
 	mas->se.icc_paths[GENI_TO_CORE].avg_bw = Bps_to_icc(CORE_2X_50_MHZ);
 	mas->se.icc_paths[CPU_TO_GENI].avg_bw = GENI_DEFAULT_BW;
-- 
2.34.1
Re: [PATCH v2 1/4] spi: geni-qcom: Improve target mode allocation by using proper allocation functions
Posted by Konrad Dybcio 5 days, 6 hours ago
On 2/4/26 5:28 PM, Praveen Talari wrote:
> The current implementation always allocates a host controller and sets the
> target flag later when the "spi-slave" device tree property is present.
> This approach is suboptimal as it doesn't utilize the dedicated allocation
> functions designed for target mode.
> 
> Use devm_spi_alloc_target() when "spi-slave" device tree property is
> present, otherwise use devm_spi_alloc_host(). This replaces the previous
> approach of always allocating a host controller and setting target flag
> later.
> 
> Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad