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Commit 076fcb17 authored by Mark Brown's avatar Mark Brown
Browse files

Merge remote-tracking branches 'spi/topic/ath97', 'spi/topic/atmel',... 

Merge remote-tracking branches 'spi/topic/ath97', 'spi/topic/atmel', 'spi/topic/au1550', 'spi/topic/bcm2835' and 'spi/topic/bcm2835aux' into spi-next
parents 8c603485 b7a2a1c0 e8646580 0beb0a6d ddf0e1c2 07bce09e

Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt

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Broadcom BCM2835 auxiliar SPI1/2 controller



The BCM2835 contains two forms of SPI master controller, one known simply as

SPI0, and the other known as the "Universal SPI Master"; part of the

auxiliary block. This binding applies to the SPI1/2 controller.



Required properties:

- compatible: Should be "brcm,bcm2835-aux-spi".

- reg: Should contain register location and length for the spi block

- interrupts: Should contain shared interrupt of the aux block

- clocks: The clock feeding the SPI controller - needs to

	  point to the auxiliar clock driver of the bcm2835,

	  as this clock will enable the output gate for the specific

	  clock.

- cs-gpios: the cs-gpios (native cs is NOT supported)

	    see also spi-bus.txt



Example:



spi1@7e215080 {

	compatible = "brcm,bcm2835-aux-spi";

	reg = <0x7e215080 0x40>;

	interrupts = <1 29>;

	clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>;

	#address-cells = <1>;

	#size-cells = <0>;

	cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>;

};



spi2@7e2150c0 {

	compatible = "brcm,bcm2835-aux-spi";

	reg = <0x7e2150c0 0x40>;

	interrupts = <1 29>;

	clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>;

	#address-cells = <1>;

	#size-cells = <0>;

	cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>;

};

drivers/spi/Kconfig

+11 −0
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@@ -88,6 +88,17 @@ config SPI_BCM2835 
	  is for the regular SPI controller. Slave mode operation is not also

	  not supported.



config SPI_BCM2835AUX

	tristate "BCM2835 SPI auxiliary controller"

	depends on ARCH_BCM2835 || COMPILE_TEST

	depends on GPIOLIB

	help

	  This selects a driver for the Broadcom BCM2835 SPI aux master.



	  The BCM2835 contains two types of SPI master controller; the

	  "universal SPI master", and the regular SPI controller.

	  This driver is for the universal/auxiliary SPI controller.



config SPI_BFIN5XX

	tristate "SPI controller driver for ADI Blackfin5xx"

	depends on BLACKFIN && !BF60x

drivers/spi/Makefile

+1 −0
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@@ -15,6 +15,7 @@ obj-$(CONFIG_SPI_ATMEL) += spi-atmel.o 
obj-$(CONFIG_SPI_ATH79)			+= spi-ath79.o

obj-$(CONFIG_SPI_AU1550)		+= spi-au1550.o

obj-$(CONFIG_SPI_BCM2835)		+= spi-bcm2835.o

obj-$(CONFIG_SPI_BCM2835AUX)		+= spi-bcm2835aux.o

obj-$(CONFIG_SPI_BCM53XX)		+= spi-bcm53xx.o

obj-$(CONFIG_SPI_BCM63XX)		+= spi-bcm63xx.o

obj-$(CONFIG_SPI_BCM63XX_HSSPI)		+= spi-bcm63xx-hsspi.o

drivers/spi/spi-ath79.c

+3 −8
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@@ -240,14 +240,9 @@ static int ath79_spi_probe(struct platform_device *pdev) 
	sp->bitbang.flags = SPI_CS_HIGH;



	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (r == NULL) {

		ret = -ENOENT;

		goto err_put_master;

	}



	sp->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));

	if (!sp->base) {

		ret = -ENXIO;

	sp->base = devm_ioremap_resource(&pdev->dev, r);

	if (IS_ERR(sp->base)) {

		ret = PTR_ERR(sp->base);

		goto err_put_master;

	}

drivers/spi/spi-atmel.c

+6 −15
Original line number Diff line number Diff line
@@ -872,14 +872,7 @@ static int atmel_spi_set_xfer_speed(struct atmel_spi *as, 
	 * Calculate the lowest divider that satisfies the

	 * constraint, assuming div32/fdiv/mbz == 0.

	 */

	if (xfer->speed_hz)

	scbr = DIV_ROUND_UP(bus_hz, xfer->speed_hz);

	else

		/*

		 * This can happend if max_speed is null.

		 * In this case, we set the lowest possible speed

		 */

		scbr = 0xff;



	/*

	 * If the resulting divider doesn't fit into the
@@ -1301,7 +1294,6 @@ static int atmel_spi_one_transfer(struct spi_master *master, 
		return -EINVAL;

	}



	if (xfer->bits_per_word) {

	asd = spi->controller_state;

	bits = (asd->csr >> 4) & 0xf;

	if (bits != xfer->bits_per_word - 8) {
@@ -1309,7 +1301,6 @@ static int atmel_spi_one_transfer(struct spi_master *master, 
			"you can't yet change bits_per_word in transfers\n");

		return -ENOPROTOOPT;

	}

	}



	/*

	 * DMA map early, for performance (empties dcache ASAP) and