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Commit f305a0a8 authored by Grant Likely's avatar Grant Likely
Browse files

Merge branch 'broonie/spi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc.git 



Minor features and bug fixes for PXA, OMAP and GPIO deivce drivers and a
cosmetic change to the bitbang driver.

Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parents 766ed704 d560040f

MAINTAINERS

+1 −0
Original line number Diff line number Diff line
@@ -7178,6 +7178,7 @@ F: drivers/clk/spear/ 


SPI SUBSYSTEM

M:	Grant Likely <grant.likely@secretlab.ca>

M:	Mark Brown <broonie@opensource.wolfsonmicro.com>

L:	spi-devel-general@lists.sourceforge.net

Q:	http://patchwork.kernel.org/project/spi-devel-general/list/

T:	git git://git.secretlab.ca/git/linux-2.6.git

drivers/spi/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -299,7 +299,7 @@ config SPI_PPC4xx 


config SPI_PXA2XX

	tristate "PXA2xx SSP SPI master"

	depends on (ARCH_PXA || (X86_32 && PCI)) && EXPERIMENTAL

	depends on ARCH_PXA || PCI

	select PXA_SSP if ARCH_PXA

	help

	  This enables using a PXA2xx or Sodaville SSP port as a SPI master
@@ -307,7 +307,7 @@ config SPI_PXA2XX 
	  additional documentation can be found a Documentation/spi/pxa2xx.



config SPI_PXA2XX_PCI

	def_bool SPI_PXA2XX && X86_32 && PCI

	def_tristate SPI_PXA2XX && PCI



config SPI_RSPI

	tristate "Renesas RSPI controller"

drivers/spi/spi-bitbang.c

+14 −13
Original line number Diff line number Diff line
@@ -427,40 +427,41 @@ EXPORT_SYMBOL_GPL(spi_bitbang_transfer); 
 */

int spi_bitbang_start(struct spi_bitbang *bitbang)

{

	struct spi_master *master = bitbang->master;

	int status;



	if (!bitbang->master || !bitbang->chipselect)

	if (!master || !bitbang->chipselect)

		return -EINVAL;



	INIT_WORK(&bitbang->work, bitbang_work);

	spin_lock_init(&bitbang->lock);

	INIT_LIST_HEAD(&bitbang->queue);



	if (!bitbang->master->mode_bits)

		bitbang->master->mode_bits = SPI_CPOL | SPI_CPHA | bitbang->flags;

	if (!master->mode_bits)

		master->mode_bits = SPI_CPOL | SPI_CPHA | bitbang->flags;



	if (!bitbang->master->transfer)

		bitbang->master->transfer = spi_bitbang_transfer;

	if (!master->transfer)

		master->transfer = spi_bitbang_transfer;

	if (!bitbang->txrx_bufs) {

		bitbang->use_dma = 0;

		bitbang->txrx_bufs = spi_bitbang_bufs;

		if (!bitbang->master->setup) {

		if (!master->setup) {

			if (!bitbang->setup_transfer)

				bitbang->setup_transfer =

					 spi_bitbang_setup_transfer;

			bitbang->master->setup = spi_bitbang_setup;

			bitbang->master->cleanup = spi_bitbang_cleanup;

			master->setup = spi_bitbang_setup;

			master->cleanup = spi_bitbang_cleanup;

		}

	} else if (!bitbang->master->setup)

	} else if (!master->setup)

		return -EINVAL;

	if (bitbang->master->transfer == spi_bitbang_transfer &&

	if (master->transfer == spi_bitbang_transfer &&

			!bitbang->setup_transfer)

		return -EINVAL;



	/* this task is the only thing to touch the SPI bits */

	bitbang->busy = 0;

	bitbang->workqueue = create_singlethread_workqueue(

			dev_name(bitbang->master->dev.parent));

			dev_name(master->dev.parent));

	if (bitbang->workqueue == NULL) {

		status = -EBUSY;

		goto err1;
@@ -469,7 +470,7 @@ int spi_bitbang_start(struct spi_bitbang *bitbang) 
	/* driver may get busy before register() returns, especially

	 * if someone registered boardinfo for devices

	 */

	status = spi_register_master(bitbang->master);

	status = spi_register_master(master);

	if (status < 0)

		goto err2;

drivers/spi/spi-gpio.c

+20 −3
Original line number Diff line number Diff line
@@ -365,9 +365,26 @@ static int spi_gpio_probe_dt(struct platform_device *pdev) 
	if (!pdata)

		return -ENOMEM;



	pdata->sck = of_get_named_gpio(np, "gpio-sck", 0);

	pdata->miso = of_get_named_gpio(np, "gpio-miso", 0);

	pdata->mosi = of_get_named_gpio(np, "gpio-mosi", 0);

	ret = of_get_named_gpio(np, "gpio-sck", 0);

	if (ret < 0) {

		dev_err(&pdev->dev, "gpio-sck property not found\n");

		goto error_free;

	}

	pdata->sck = ret;



	ret = of_get_named_gpio(np, "gpio-miso", 0);

	if (ret < 0) {

		dev_info(&pdev->dev, "gpio-miso property not found, switching to no-rx mode\n");

		pdata->miso = SPI_GPIO_NO_MISO;

	} else

		pdata->miso = ret;



	ret = of_get_named_gpio(np, "gpio-mosi", 0);

	if (ret < 0) {

		dev_info(&pdev->dev, "gpio-mosi property not found, switching to no-tx mode\n");

		pdata->mosi = SPI_GPIO_NO_MOSI;

	} else

		pdata->mosi = ret;



	ret = of_property_read_u32(np, "num-chipselects", &tmp);

	if (ret < 0) {

drivers/spi/spi-omap2-mcspi.c

+26 −8
Original line number Diff line number Diff line
@@ -927,6 +927,7 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, struct spi_message *m) 


	struct spi_device		*spi;

	struct spi_transfer		*t = NULL;

	struct spi_master		*master;

	int				cs_active = 0;

	struct omap2_mcspi_cs		*cs;

	struct omap2_mcspi_device_config *cd;
@@ -935,6 +936,7 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, struct spi_message *m) 
	u32				chconf;



	spi = m->spi;

	master = spi->master;

	cs = spi->controller_state;

	cd = spi->controller_data;
@@ -952,6 +954,14 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, struct spi_message *m) 
			if (!t->speed_hz && !t->bits_per_word)

				par_override = 0;

		}

		if (cd && cd->cs_per_word) {

			chconf = mcspi->ctx.modulctrl;

			chconf &= ~OMAP2_MCSPI_MODULCTRL_SINGLE;

			mcspi_write_reg(master, OMAP2_MCSPI_MODULCTRL, chconf);

			mcspi->ctx.modulctrl =

				mcspi_read_cs_reg(spi, OMAP2_MCSPI_MODULCTRL);

		}





		if (!cs_active) {

			omap2_mcspi_force_cs(spi, 1);
@@ -1013,6 +1023,14 @@ static void omap2_mcspi_work(struct omap2_mcspi *mcspi, struct spi_message *m) 
	if (cs_active)

		omap2_mcspi_force_cs(spi, 0);



	if (cd && cd->cs_per_word) {

		chconf = mcspi->ctx.modulctrl;

		chconf |= OMAP2_MCSPI_MODULCTRL_SINGLE;

		mcspi_write_reg(master, OMAP2_MCSPI_MODULCTRL, chconf);

		mcspi->ctx.modulctrl =

			mcspi_read_cs_reg(spi, OMAP2_MCSPI_MODULCTRL);

	}



	omap2_mcspi_set_enable(spi, 0);



	m->status = status;