the atmel_spi use only gpio for chip select Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagn...@jcrosoft.com> Cc: devicetree-disc...@lists.ozlabs.org Cc: spi-devel-general@lists.sourceforge.net --- .../devicetree/bindings/spi/spi_atmel.txt | 6 ++++++ drivers/spi/spi-atmel.c | 13 ++++++++++++- 2 files changed, 18 insertions(+), 1 deletions(-) create mode 100644 Documentation/devicetree/bindings/spi/spi_atmel.txt
diff --git a/Documentation/devicetree/bindings/spi/spi_atmel.txt b/Documentation/devicetree/bindings/spi/spi_atmel.txt new file mode 100644 index 0000000..7ec3d8d --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi_atmel.txt @@ -0,0 +1,6 @@ +Atmel SPI device + +Required properties: +- compatible : should be "atmel,at91rm9200-spi". +- reg: Address and length of the register set for the device +- interrupts: Should contain macb interrupt diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index 16d6a83..beeaa26 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -19,6 +19,7 @@ #include <linux/interrupt.h> #include <linux/spi/spi.h> #include <linux/slab.h> +#include <linux/of.h> #include <asm/io.h> #include <mach/board.h> @@ -937,8 +938,9 @@ static int __devinit atmel_spi_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + master->dev.of_node = pdev->dev.of_node; master->bus_num = pdev->id; - master->num_chipselect = 4; + master->num_chipselect = master->dev.of_node ? 0 : 4; master->setup = atmel_spi_setup; master->transfer = atmel_spi_transfer; master->cleanup = atmel_spi_cleanup; @@ -1064,11 +1066,20 @@ static int atmel_spi_resume(struct platform_device *pdev) #define atmel_spi_resume NULL #endif +#if defined(CONFIG_OF) +static const struct of_device_id atmel_spi_dt_ids[] = { + { .compatible = "atmel,at91rm9200-spi" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, atmel_spi_dt_ids); +#endif static struct platform_driver atmel_spi_driver = { .driver = { .name = "atmel_spi", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(atmel_spi_dt_ids), }, .suspend = atmel_spi_suspend, .resume = atmel_spi_resume, -- 1.7.7 ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general