From: Dilip Kota <eswara.kota@linux.intel.com>
To: broonie@kernel.org, robh@kernel.org, linux-spi@vger.kernel.org,
devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, daniel.schwierzeck@gmail.com,
hauke@hauke-m.de, andriy.shevchenko@intel.com,
cheol.yong.kim@intel.com, chuanhua.lei@linux.intel.com,
qi-ming.wu@intel.com, Dilip Kota <eswara.kota@linux.intel.com>
Subject: [PATCH v2 6/8] spi: lantiq: Move interrupt configuration to SoC specific data structure
Date: Fri, 17 Jul 2020 14:27:55 +0800 [thread overview]
Message-ID: <7eb6d863515245fedfa0296c72082df107367d07.1594957019.git.eswara.kota@linux.intel.com> (raw)
In-Reply-To: <efb650b0faa49a00788c4e0ca8ef7196bdba851d.1594957019.git.eswara.kota@linux.intel.com>
In-Reply-To: <efb650b0faa49a00788c4e0ca8ef7196bdba851d.1594957019.git.eswara.kota@linux.intel.com>
Moving interrupt configuration to SoC specific data structure helps to add
support for newer SoCs on which SPI controller with lesser interrupt lines
compared to existing chipsets.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
---
drivers/spi/spi-lantiq-ssc.c | 64 +++++++++++++++++++++++++++-----------------
1 file changed, 39 insertions(+), 25 deletions(-)
diff --git a/drivers/spi/spi-lantiq-ssc.c b/drivers/spi/spi-lantiq-ssc.c
index a0d1f82d309f9..2a433d9b5d8fe 100644
--- a/drivers/spi/spi-lantiq-ssc.c
+++ b/drivers/spi/spi-lantiq-ssc.c
@@ -150,7 +150,10 @@
#define LTQ_SPI_IRNEN_T_XRX BIT(0) /* Receive end interrupt request */
#define LTQ_SPI_IRNEN_ALL 0x1F
+struct lantiq_ssc_spi;
+
struct lantiq_ssc_hwcfg {
+ int (*cfg_irq)(struct platform_device *pdev, struct lantiq_ssc_spi *spi);
unsigned int irnen_r;
unsigned int irnen_t;
unsigned int irncr;
@@ -800,7 +803,40 @@ static int lantiq_ssc_transfer_one(struct spi_master *master,
return transfer_start(spi, spidev, t);
}
+static int lantiq_cfg_irq(struct platform_device *pdev, struct lantiq_ssc_spi *spi)
+{
+ int irq, err;
+
+ irq = platform_get_irq_byname(pdev, LTQ_SPI_RX_IRQ_NAME);
+ if (irq < 0)
+ return irq;
+
+ err = devm_request_irq(&pdev->dev, irq, lantiq_ssc_xmit_interrupt,
+ 0, LTQ_SPI_RX_IRQ_NAME, spi);
+ if (err)
+ return err;
+
+ irq = platform_get_irq_byname(pdev, LTQ_SPI_TX_IRQ_NAME);
+ if (irq < 0)
+ return irq;
+
+ err = devm_request_irq(&pdev->dev, irq, lantiq_ssc_xmit_interrupt,
+ 0, LTQ_SPI_TX_IRQ_NAME, spi);
+
+ if (err)
+ return err;
+
+ irq = platform_get_irq_byname(pdev, LTQ_SPI_ERR_IRQ_NAME);
+ if (irq < 0)
+ return irq;
+
+ err = devm_request_irq(&pdev->dev, irq, lantiq_ssc_err_interrupt,
+ 0, LTQ_SPI_ERR_IRQ_NAME, spi);
+ return err;
+}
+
static const struct lantiq_ssc_hwcfg lantiq_ssc_xway = {
+ .cfg_irq = lantiq_cfg_irq,
.irnen_r = LTQ_SPI_IRNEN_R_XWAY,
.irnen_t = LTQ_SPI_IRNEN_T_XWAY,
.irnicr = 0xF8,
@@ -810,6 +846,7 @@ static const struct lantiq_ssc_hwcfg lantiq_ssc_xway = {
};
static const struct lantiq_ssc_hwcfg lantiq_ssc_xrx = {
+ .cfg_irq = lantiq_cfg_irq,
.irnen_r = LTQ_SPI_IRNEN_R_XRX,
.irnen_t = LTQ_SPI_IRNEN_T_XRX,
.irnicr = 0xF8,
@@ -833,9 +870,9 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
struct lantiq_ssc_spi *spi;
const struct lantiq_ssc_hwcfg *hwcfg;
const struct of_device_id *match;
- int err, rx_irq, tx_irq, err_irq;
u32 id, supports_dma, revision;
unsigned int num_cs;
+ int err;
match = of_match_device(lantiq_ssc_match, dev);
if (!match) {
@@ -844,18 +881,6 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
}
hwcfg = match->data;
- rx_irq = platform_get_irq_byname(pdev, LTQ_SPI_RX_IRQ_NAME);
- if (rx_irq < 0)
- return -ENXIO;
-
- tx_irq = platform_get_irq_byname(pdev, LTQ_SPI_TX_IRQ_NAME);
- if (tx_irq < 0)
- return -ENXIO;
-
- err_irq = platform_get_irq_byname(pdev, LTQ_SPI_ERR_IRQ_NAME);
- if (err_irq < 0)
- return -ENXIO;
-
master = spi_alloc_master(dev, sizeof(struct lantiq_ssc_spi));
if (!master)
return -ENOMEM;
@@ -871,18 +896,7 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
goto err_master_put;
}
- err = devm_request_irq(dev, rx_irq, lantiq_ssc_xmit_interrupt,
- 0, LTQ_SPI_RX_IRQ_NAME, spi);
- if (err)
- goto err_master_put;
-
- err = devm_request_irq(dev, tx_irq, lantiq_ssc_xmit_interrupt,
- 0, LTQ_SPI_TX_IRQ_NAME, spi);
- if (err)
- goto err_master_put;
-
- err = devm_request_irq(dev, err_irq, lantiq_ssc_err_interrupt,
- 0, LTQ_SPI_ERR_IRQ_NAME, spi);
+ err = hwcfg->cfg_irq(pdev, spi);
if (err)
goto err_master_put;
--
2.11.0
next prev parent reply other threads:[~2020-07-17 6:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 6:27 [PATCH v2 1/8] spi: lantiq: fix: Rx overflow error in full duplex mode Dilip Kota
2020-07-17 6:27 ` [PATCH v2 2/8] spi: lantiq: Add SMP support Dilip Kota
2020-07-17 6:27 ` [PATCH v2 3/8] spi: lantiq: Move interrupt control register offesets to SoC specific data structure Dilip Kota
2020-07-17 6:27 ` [PATCH v2 4/8] spi: lantiq: Add support to acknowledge interrupt Dilip Kota
2020-07-17 6:27 ` [PATCH v2 5/8] spi: lantiq: Add fifo size bit mask in SoC specific data structure Dilip Kota
2020-07-17 6:27 ` Dilip Kota [this message]
2020-07-17 6:27 ` [PATCH v2 7/8] dt-bindings: spi: Add support to Lightning Mountain SoC Dilip Kota
2020-07-17 6:27 ` [PATCH v2 8/8] spi: lantiq: " Dilip Kota
2020-07-22 13:45 ` [PATCH v2 1/8] spi: lantiq: fix: Rx overflow error in full duplex mode Mark Brown
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