path: root/include
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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 16:38:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 16:38:41 -0700
commit61f3d0a9883d965b498edeb673235bddc92770fd (patch)
treefa1e394cd1d5332f4a205d12f0db88320bc83813 /include
parent8ded8d4e4facab78acf616bc34085ddd15c2c21c (diff)
parentcd8d984f0def2a8c5733a9468634ec3e0feec03d (diff)
Merge tag 'spi-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown: "A fairly quiet release for SPI, mainly driver work. A few highlights: - Supports bits per word compatibility checking in the core. - Allow use of the IP used in Freescale SPI controllers outside Freescale SoCs. - DMA support for the Atmel SPI driver. - New drivers for the BCM2835 and Tegra114" * tag 'spi-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (68 commits) spi-topcliff-pch: fix to use list_for_each_entry_safe() when delete list items spi-topcliff-pch: missing platform_driver_unregister() on error in pch_spi_init() ARM: dts: add pinctrl property for spi node for atmel SoC ARM: dts: add spi nodes for the atmel boards ARM: dts: add spi nodes for atmel SoC ARM: at91: add clocks for spi dt entries spi/spi-atmel: add dmaengine support spi/spi-atmel: add flag to controller data for lock operations spi/spi-atmel: add physical base address spi/sirf: fix MODULE_DEVICE_TABLE MAINTAINERS: Add git repository and update my address spi/s3c64xx: Check for errors in dmaengine prepare_transfer() spi/s3c64xx: Fix non-dmaengine usage spi: omap2-mcspi: fix error return code in omap2_mcspi_probe() spi/s3c64xx: let device core setup the default pin configuration MAINTAINERS: Update Grant's email address and maintainership spi: omap2-mcspi: Fix transfers if DMADEVICES is not set spi: s3c64xx: move to generic dmaengine API spi-gpio: init CS before spi_bitbang_setup() spi: spi-mpc512x-psc: let transmiter/receiver enabled when in xfer loop ...
Diffstat (limited to 'include')
3 files changed, 11 insertions, 40 deletions
diff --git a/include/linux/platform_data/spi-s3c64xx.h b/include/linux/platform_data/spi-s3c64xx.h
index ceba18d23a5..8447f634c7f 100644
--- a/include/linux/platform_data/spi-s3c64xx.h
+++ b/include/linux/platform_data/spi-s3c64xx.h
@@ -11,6 +11,8 @@
#ifndef __S3C64XX_PLAT_SPI_H
#define __S3C64XX_PLAT_SPI_H
+#include <linux/dmaengine.h>
struct platform_device;
@@ -38,6 +40,7 @@ struct s3c64xx_spi_info {
int src_clk_nr;
int num_cs;
int (*cfg_gpio)(void);
+ dma_filter_fn filter;
diff --git a/include/linux/spi/spi-tegra.h b/include/linux/spi/spi-tegra.h
deleted file mode 100644
index 786932c62ed..00000000000
--- a/include/linux/spi/spi-tegra.h
+++ /dev/null
@@ -1,40 +0,0 @@
- * spi-tegra.h: SPI interface for Nvidia Tegra20 SLINK controller.
- *
- * Copyright (C) 2011 NVIDIA Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
-struct tegra_spi_platform_data {
- int dma_req_sel;
- unsigned int spi_max_frequency;
- * Controller data from device to pass some info like
- * hw based chip select can be used or not and if yes
- * then CS hold and setup time.
- */
-struct tegra_spi_device_controller_data {
- bool is_hw_based_cs;
- int cs_setup_clk_count;
- int cs_hold_clk_count;
-#endif /* _LINUX_SPI_TEGRA_H */
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 38c2b925923..733eb5ee31c 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -228,6 +228,11 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* every chipselect is connected to a slave.
* @dma_alignment: SPI controller constraint on DMA buffers alignment.
* @mode_bits: flags understood by this controller driver
+ * @bits_per_word_mask: A mask indicating which values of bits_per_word are
+ * supported by the driver. Bit n indicates that a bits_per_word n+1 is
+ * suported. If set, the SPI core will reject any transfer with an
+ * unsupported bits_per_word. If not set, this value is simply ignored,
+ * and it's up to the individual driver to perform any validation.
* @flags: other constraints relevant to this driver
* @bus_lock_spinlock: spinlock for SPI bus locking
* @bus_lock_mutex: mutex for SPI bus locking
@@ -301,6 +306,9 @@ struct spi_master {
/* spi_device.mode flags understood by this controller driver */
u16 mode_bits;
+ /* bitmask of supported bits_per_word for transfers */
+ u32 bits_per_word_mask;
/* other constraints relevant to this driver */
u16 flags;
#define SPI_MASTER_HALF_DUPLEX BIT(0) /* can't do full duplex */