Merge tag 'spi-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Not a huge amount going on this release, mainly new drivers (there's a
  couple more waiting that didn't quite make the cut for this release
  too):

   - An interface for querying if the current transfer is the last in a
     message, allowing controllers that need special handling for the
     final transfer to use the core message parsing.
   - Support for Amlogic Meson SPIFC, Imagination Technologies SFPI,
     Intel Quark X1000 and Samsung Exynos 7 controllers"

* tag 'spi-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (38 commits)
  spi/s3c64xx: Remove redundant runtime PM management
  spi: fsl-spi: remove unused variable assignment
  spi: spi-fsl-spi: Return an error code in fsl_spi_do_one_msg()
  spi: core: Do not mangle error code from kthread_run()
  spi: fsl-espi: add (un)prepare_transfer_hardware calls to save power if SPI is not in use
  spi: fsl-(e)spi: migrate to generic master queueing
  spi/txx9: Deletion of an unnecessary check before the function call "clk_disable"
  spi: cadence: Fix 3-to-8 mux mode
  spi: cadence: Init HW after reading devicetree attributes
  spi: meson: Select REGMAP_MMIO
  spi: s3c64xx: add support for exynos7 SPI controller
  spi: spi-pxa2xx: SPI support for Intel Quark X1000
  spi: meson: meson_spifc_setup_speed() can be static
  spi: spi-pxa2xx: Add helpers for regiseters' accessing
  spi: spi-mxs: Fix mapping from vmalloc-ed buffer to scatter list
  spi: atmel: introduce probe deferring
  spi: atmel: remove compat for non DT board when requesting dma chan
  spi: meson: Add support for Amlogic Meson SPIFC
  spi: meson: Add device tree bindings documentation for SPIFC
  spi: core: Add spi_transfer_is_last() helper
  ...

2 files changed, 26 insertions, 0 deletions

diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h
index f2b405116166..77aed9ea1d26 100644
--- a/include/linux/pxa2xx_ssp.h
+++ b/include/linux/pxa2xx_ssp.h
@@ -108,6 +108,25 @@
 #define SSCR1_RxTresh(x) (((x) - 1) << 10) /* level [1..4] */
 #endif
 
+/* QUARK_X1000 SSCR0 bit definition */
+#define QUARK_X1000_SSCR0_DSS	(0x1F)		/* Data Size Select (mask) */
+#define QUARK_X1000_SSCR0_DataSize(x)  ((x) - 1)	/* Data Size Select [4..32] */
+#define QUARK_X1000_SSCR0_FRF	(0x3 << 5)	/* FRame Format (mask) */
+#define QUARK_X1000_SSCR0_Motorola	(0x0 << 5)	/* Motorola's Serial Peripheral Interface (SPI) */
+
+#define RX_THRESH_QUARK_X1000_DFLT	1
+#define TX_THRESH_QUARK_X1000_DFLT	16
+
+#define QUARK_X1000_SSSR_TFL_MASK	(0x1F << 8)	/* Transmit FIFO Level mask */
+#define QUARK_X1000_SSSR_RFL_MASK	(0x1F << 13)	/* Receive FIFO Level mask */
+
+#define QUARK_X1000_SSCR1_TFT	(0x1F << 6)	/* Transmit FIFO Threshold (mask) */
+#define QUARK_X1000_SSCR1_TxTresh(x) (((x) - 1) << 6)	/* level [1..32] */
+#define QUARK_X1000_SSCR1_RFT	(0x1F << 11)	/* Receive FIFO Threshold (mask) */
+#define QUARK_X1000_SSCR1_RxTresh(x) (((x) - 1) << 11)	/* level [1..32] */
+#define QUARK_X1000_SSCR1_STRF       (1 << 17)		/* Select FIFO or EFWR */
+#define QUARK_X1000_SSCR1_EFWR	(1 << 16)		/* Enable FIFO Write/Read */
+
 /* extra bits in PXA255, PXA26x and PXA27x SSP ports */
 #define SSCR0_TISSP		(1 << 4)	/* TI Sync Serial Protocol */
 #define SSCR0_PSP		(3 << 4)	/* PSP - Programmable Serial Protocol */
@@ -175,6 +194,7 @@ enum pxa_ssp_type {
 	PXA910_SSP,
 	CE4100_SSP,
 	LPSS_SSP,
+	QUARK_X1000_SSP,
 };
 
 struct ssp_device {
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 46d188a9947c..a6ef2a8e6de4 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -1049,4 +1049,10 @@ spi_unregister_device(struct spi_device *spi)
 extern const struct spi_device_id *
 spi_get_device_id(const struct spi_device *sdev);
 
+static inline bool
+spi_transfer_is_last(struct spi_master *master, struct spi_transfer *xfer)
+{
+	return list_is_last(&xfer->transfer_list, &master->cur_msg->transfers);
+}
+
 #endif /* __LINUX_SPI_H */