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spi: lantiq: Move interrupt configuration to SoC specific data structure

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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>
Link: https://lore.kernel.org/r/7eb6d863515245fedfa0296c72082df107367d07.1594957019.git.eswara.kota@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dilip Kota 2020-07-17 14:27:55 +08:00 committed by Mark Brown
parent 8743d2155a
commit 744cd0f212
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 39 additions and 25 deletions
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64
drivers/spi/spi-lantiq-ssc.c
View file

@ -149,7 +149,10 @@
#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;
@ -799,7 +802,40 @@ 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,
@ -809,6 +845,7 @@ 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,
@ -832,9 +869,9 @@ 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) {
@ -843,18 +880,6 @@ 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;
@ -870,18 +895,7 @@ 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;