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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mark Brown <broonie@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Cc: Daniel Mack <daniel@zonque.org>,
	Haojian Zhuang <haojian.zhuang@gmail.com>,
	Robert Jarzmik <robert.jarzmik@free.fr>,
	Russell King <linux@armlinux.org.uk>
Subject: [PATCH v2 4/9] spi: pxa2xx: Skip SSP initialization if it's done elsewhere
Date: Wed, 27 Mar 2024 21:29:23 +0200	[thread overview]
Message-ID: <20240327193138.2385910-5-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20240327193138.2385910-1-andriy.shevchenko@linux.intel.com>

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


WARNING: multiple messages have this Message-ID (diff)
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mark Brown <broonie@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Cc: Daniel Mack <daniel@zonque.org>,
	Haojian Zhuang <haojian.zhuang@gmail.com>,
	Robert Jarzmik <robert.jarzmik@free.fr>,
	Russell King <linux@armlinux.org.uk>
Subject: [PATCH v2 4/9] spi: pxa2xx: Skip SSP initialization if it's done elsewhere
Date: Wed, 27 Mar 2024 21:29:23 +0200	[thread overview]
Message-ID: <20240327193138.2385910-5-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20240327193138.2385910-1-andriy.shevchenko@linux.intel.com>

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


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  parent reply	other threads:[~2024-03-27 19:31 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-27 19:29 [PATCH v2 0/9] spi: pxa2xx: Drop linux/spi/pxa2xx_spi.h Andy Shevchenko
2024-03-27 19:29 ` Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 1/9] spi: pxa2xx: Narrow the Kconfig option visibility Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 2/9] spi: pxa2xx: Drop ACPI_PTR() and of_match_ptr() Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 3/9] spi: pxa2xx: Extract pxa2xx_spi_init_ssp() helper Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-27 19:29 ` Andy Shevchenko [this message]
2024-03-27 19:29   ` [PATCH v2 4/9] spi: pxa2xx: Skip SSP initialization if it's done elsewhere Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 5/9] spi: pxa2xx: Allow number of chip select pins to be read from property Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 6/9] spi: pxa2xx: Provide num-cs for Sharp PDAs via device properties Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 7/9] spi: pxa2xx: Move contents of linux/spi/pxa2xx_spi.h to a local one Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 8/9] spi: pxa2xx: Remove outdated documentation Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-27 19:29 ` [PATCH v2 9/9] spi: pxa2xx: Don't use "proxy" headers Andy Shevchenko
2024-03-27 19:29   ` Andy Shevchenko
2024-03-29  1:29 ` (subset) [PATCH v2 0/9] spi: pxa2xx: Drop linux/spi/pxa2xx_spi.h Mark Brown
2024-03-29  1:29   ` Mark Brown
2024-04-03 11:07   ` Andy Shevchenko
2024-04-03 11:07     ` Andy Shevchenko
2024-04-03 13:29     ` Mark Brown
2024-04-03 13:29       ` Mark Brown
2024-04-03 13:39       ` Andy Shevchenko
2024-04-03 13:39         ` Andy Shevchenko
2024-04-03 13:41         ` Andy Shevchenko
2024-04-03 13:41           ` Andy Shevchenko
2024-04-03 14:13           ` Mark Brown
2024-04-03 14:13             ` Mark Brown
2024-04-03 14:41             ` Andy Shevchenko
2024-04-03 14:41               ` Andy Shevchenko
2024-04-03 15:50               ` Mark Brown
2024-04-03 15:50                 ` Mark Brown
2024-04-03 17:13                 ` Andy Shevchenko
2024-04-03 17:13                   ` Andy Shevchenko

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