[PATCH v1 05/10] spi: pxa2xx: Skip SSP initialization if it's done elsewhere

Andy Shevchenko
2024-03-26T18:10:44Z

If SSP has been enumerated elsewhere, skip its initialization
in pxa2xx_spi_init_pdata().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/spi/spi-pxa2xx.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index e7072727c25c..b01a18c89b6b 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1355,6 +1355,7 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device *parent = dev->parent;
enum pxa_ssp_type type = SSP_UNDEFINED;
+ struct ssp_device *ssp = NULL;
const void *match;
bool is_lpss_priv;
int status;
@@ -1372,6 +1373,10 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
return ERR_PTR(status);

type = (enum pxa_ssp_type)value;
+ } else {
+ ssp = pxa_ssp_request(pdev->id, pdev->name);
+ if (ssp)
+ type = ssp->type;
}

/* Validate the SSP type correctness */
@@ -1394,6 +1399,10 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
pdata->enable_dma = true;
pdata->dma_burst_size = 1;

+ /* If SSP has been already enumerated, use it */
+ if (ssp)
+ return pdata;
+
status = pxa2xx_spi_init_ssp(pdev, &pdata->ssp, type);
if (status)
return ERR_PTR(status);
--
2.43.0.rc1.1.gbec44491f096