Merge tag 'spi-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi Updates from Mark Brown:
 "A busy release for both cleanups and new drivers this time along with
  further factoring out of replicated code into the core:

   - Provide support in the core for DMA mapping transfers - essentially
     all drivers weren't implementing this properly, now there's no
     excuse.
   - Dual and quad mode support for spidev.
   - Fix handling of cs_change in the generic implementation.
   - Remove the S3C_DMA code from the s3c64xx driver now that all the
     platforms using it have been converted to dmaengine.
   - Lots of improvements to the Renesas SPI controllers.
   - Drivers for Allwinner A10 and A31, Qualcomm QUP and Xylinx xtfpga.
   - Removal of the bitrotted ti-ssp driver"

* tag 'spi-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (199 commits)
  spi: Fix handling of cs_change in core implementation
  spi: bitbang: Make spi_bitbang_stop() return void
  spi: mpc52xx: Convert to use bits_per_word_mask
  spi: omap-100k: Fix memory leak
  spi: dw: Don't call kfree for memory allocated by devm_kzalloc
  spi: fsl-dspi: Fix memory leak
  spi: omap-uwire: add missing iounmap
  spi: clps711x: Convert to use master->max_speed_hz
  spi: clps711x: Enable driver compilation with COMPILE_TEST
  spi: omap-uwire: Remove full duplex check
  spi: Do not require a completion
  spi: topcliff-pch: Transform noisy message to dev_vdbg
  spi: coldfire-qspi: Simplify the code to set register bits for transfer speed
  spi: bcm63xx: Remove unused define for PFX
  spi: efm32: use $vendor,$device scheme for compatible string
  spi: clps711x: Remove <mach/hardware.h> dependency
  spi: topcliff-pch: Properly unregister platform devices on probe() error paths
  spi: fsl-espi: Remove unused bits_per_word variable in fsl_espi_bufs
  spi: altera: Remove the code to get unused platform_data
  spi: fsl-lib: Fix memory leak of pinfo
  ...

1 files changed, 10 insertions, 70 deletions

diff --git a/drivers/spi/spi-octeon.c b/drivers/spi/spi-octeon.c
index 67249a48b39..c5e2f718eeb 100644
--- a/drivers/spi/spi-octeon.c
+++ b/drivers/spi/spi-octeon.c
@@ -11,7 +11,6 @@
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/delay.h>
-#include <linux/init.h>
 #include <linux/io.h>
 #include <linux/of.h>
 
@@ -33,13 +32,6 @@ struct octeon_spi {
 	u64 cs_enax;
 };
 
-struct octeon_spi_setup {
-	u32 max_speed_hz;
-	u8 chip_select;
-	u8 mode;
-	u8 bits_per_word;
-};
-
 static void octeon_spi_wait_ready(struct octeon_spi *p)
 {
 	union cvmx_mpi_sts mpi_sts;
@@ -57,6 +49,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
 				  struct spi_transfer *xfer,
 				  bool last_xfer)
 {
+	struct spi_device *spi = msg->spi;
 	union cvmx_mpi_cfg mpi_cfg;
 	union cvmx_mpi_tx mpi_tx;
 	unsigned int clkdiv;
@@ -68,18 +61,11 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
 	int len;
 	int i;
 
-	struct octeon_spi_setup *msg_setup = spi_get_ctldata(msg->spi);
-
-	speed_hz = msg_setup->max_speed_hz;
-	mode = msg_setup->mode;
+	mode = spi->mode;
 	cpha = mode & SPI_CPHA;
 	cpol = mode & SPI_CPOL;
 
-	if (xfer->speed_hz)
-		speed_hz = xfer->speed_hz;
-
-	if (speed_hz > OCTEON_SPI_MAX_CLOCK_HZ)
-		speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
+	speed_hz = xfer->speed_hz ? : spi->max_speed_hz;
 
 	clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz);
 
@@ -93,8 +79,8 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
 	mpi_cfg.s.cslate = cpha ? 1 : 0;
 	mpi_cfg.s.enable = 1;
 
-	if (msg_setup->chip_select < 4)
-		p->cs_enax |= 1ull << (12 + msg_setup->chip_select);
+	if (spi->chip_select < 4)
+		p->cs_enax |= 1ull << (12 + spi->chip_select);
 	mpi_cfg.u64 |= p->cs_enax;
 
 	if (mpi_cfg.u64 != p->last_cfg) {
@@ -114,7 +100,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
 			cvmx_write_csr(p->register_base + OCTEON_SPI_DAT0 + (8 * i), d);
 		}
 		mpi_tx.u64 = 0;
-		mpi_tx.s.csid = msg_setup->chip_select;
+		mpi_tx.s.csid = spi->chip_select;
 		mpi_tx.s.leavecs = 1;
 		mpi_tx.s.txnum = tx_buf ? OCTEON_SPI_MAX_BYTES : 0;
 		mpi_tx.s.totnum = OCTEON_SPI_MAX_BYTES;
@@ -139,7 +125,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
 	}
 
 	mpi_tx.u64 = 0;
-	mpi_tx.s.csid = msg_setup->chip_select;
+	mpi_tx.s.csid = spi->chip_select;
 	if (last_xfer)
 		mpi_tx.s.leavecs = xfer->cs_change;
 	else
@@ -169,17 +155,9 @@ static int octeon_spi_transfer_one_message(struct spi_master *master,
 	int status = 0;
 	struct spi_transfer *xfer;
 
-	/*
-	 * We better have set the configuration via a call to .setup
-	 * before we get here.
-	 */
-	if (spi_get_ctldata(msg->spi) == NULL) {
-		status = -EINVAL;
-		goto err;
-	}
-
 	list_for_each_entry(xfer, &msg->transfers, transfer_list) {
-		bool last_xfer = &xfer->transfer_list == msg->transfers.prev;
+		bool last_xfer = list_is_last(&xfer->transfer_list,
+					      &msg->transfers);
 		int r = octeon_spi_do_transfer(p, msg, xfer, last_xfer);
 		if (r < 0) {
 			status = r;
@@ -194,41 +172,6 @@ err:
 	return status;
 }
 
-static struct octeon_spi_setup *octeon_spi_new_setup(struct spi_device *spi)
-{
-	struct octeon_spi_setup *setup = kzalloc(sizeof(*setup), GFP_KERNEL);
-	if (!setup)
-		return NULL;
-
-	setup->max_speed_hz = spi->max_speed_hz;
-	setup->chip_select = spi->chip_select;
-	setup->mode = spi->mode;
-	setup->bits_per_word = spi->bits_per_word;
-	return setup;
-}
-
-static int octeon_spi_setup(struct spi_device *spi)
-{
-	struct octeon_spi_setup *new_setup;
-	struct octeon_spi_setup *old_setup = spi_get_ctldata(spi);
-
-	new_setup = octeon_spi_new_setup(spi);
-	if (!new_setup)
-		return -ENOMEM;
-
-	spi_set_ctldata(spi, new_setup);
-	kfree(old_setup);
-
-	return 0;
-}
-
-static void octeon_spi_cleanup(struct spi_device *spi)
-{
-	struct octeon_spi_setup *old_setup = spi_get_ctldata(spi);
-	spi_set_ctldata(spi, NULL);
-	kfree(old_setup);
-}
-
 static int octeon_spi_probe(struct platform_device *pdev)
 {
 	struct resource *res_mem;
@@ -257,8 +200,6 @@ static int octeon_spi_probe(struct platform_device *pdev)
 	p->register_base = (u64)devm_ioremap(&pdev->dev, res_mem->start,
 					     resource_size(res_mem));
 
-	/* Dynamic bus numbering */
-	master->bus_num = -1;
 	master->num_chipselect = 4;
 	master->mode_bits = SPI_CPHA |
 			    SPI_CPOL |
@@ -266,10 +207,9 @@ static int octeon_spi_probe(struct platform_device *pdev)
 			    SPI_LSB_FIRST |
 			    SPI_3WIRE;
 
-	master->setup = octeon_spi_setup;
-	master->cleanup = octeon_spi_cleanup;
 	master->transfer_one_message = octeon_spi_transfer_one_message;
 	master->bits_per_word_mask = SPI_BPW_MASK(8);
+	master->max_speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
 
 	master->dev.of_node = pdev->dev.of_node;
 	err = devm_spi_register_master(&pdev->dev, master);