Unverified Commit e64e9ad2 authored by 周琰杰 (Zhou Yanjie)'s avatar 周琰杰 (Zhou Yanjie) Committed by Mark Brown
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spi: ingenic: Add support for use GPIO as chip select line. 



Add support for using GPIOs as chip select lines on Ingenic SoCs.

Signed-off-by: default avatar周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Reviewed-by: default avatarPaul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/1650724725-93758-2-git-send-email-zhouyanjie@wanyeetech.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent cc470d55

drivers/spi/spi-ingenic.c

+7 −2
Original line number Diff line number Diff line
@@ -380,7 +380,7 @@ static int spi_ingenic_probe(struct platform_device *pdev) 
	struct spi_controller *ctlr;

	struct ingenic_spi *priv;

	void __iomem *base;

	int ret;

	int num_cs, ret;



	pdata = of_device_get_match_data(dev);

	if (!pdata) {
@@ -416,6 +416,9 @@ static int spi_ingenic_probe(struct platform_device *pdev) 
	if (IS_ERR(priv->flen_field))

		return PTR_ERR(priv->flen_field);



	if (device_property_read_u32(dev, "num-cs", &num_cs))

		num_cs = 2;



	platform_set_drvdata(pdev, ctlr);



	ctlr->prepare_transfer_hardware = spi_ingenic_prepare_hardware;
@@ -429,7 +432,9 @@ static int spi_ingenic_probe(struct platform_device *pdev) 
	ctlr->bits_per_word_mask = pdata->bits_per_word_mask;

	ctlr->min_speed_hz = 7200;

	ctlr->max_speed_hz = 54000000;

	ctlr->num_chipselect = 2;

	ctlr->use_gpio_descriptors = true;

	ctlr->max_native_cs = 2;

	ctlr->num_chipselect = num_cs;

	ctlr->dev.of_node = pdev->dev.of_node;



	if (spi_ingenic_request_dma(ctlr, dev))