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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-14 22:01:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-14 22:01:08 +0300
commit010b0e708e08727d38b82accb21832b63fe2c250 (patch)
tree29f110982a25675c02346320b2529ffd82aef244 /include/linux/spi/spi-mem.h
parent792adb90fa724ce07c0171cbc96b9215af4b1045 (diff)
parentc1acb21b32a3bb601453764c9eac9fc8fbb3a81d (diff)
downloadlinux-010b0e708e08727d38b82accb21832b63fe2c250.tar.xz
Merge tag 'spi-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown: "Quite an active release for the SPI subsystem, lots of small updates and fixes scattered about with highlights including: - 3-wire support in the GPIO driver. - support for setting a custom memory name in the memory mapped flash drivers. - support for extended mode in the Freescale DSPI controller. - support for the non-standard integration with the Microsemi Ocelot platform in the DesignWare driver. - new driver for the SocioNext UniPhier" * tag 'spi-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (47 commits) spi: davinci: fix a NULL pointer dereference spi: spi-mem: Constify spi_mem->name mtd: m25p80: Call spi_mem_get_name() to let controller set a custom name spi: spi-mem: Extend the SPI mem interface to set a custom memory name spi: spi-mem: Fix a typo in the documentation of struct spi_mem spi: uniphier: remove unnecessary include headers spi: spi-gpio: add SPI_3WIRE support spi: add flags parameter to txrx_word function pointers spi: add SPI controller driver for UniPhier SoC spi: add DT bindings for UniPhier SPI controller spi: dw: document Microsemi integration spi: img-spfi: Set device select bits for SPFI port state spi: omap2-mcspi: remove several redundant variables spi: dw-mmio: add MSCC Ocelot support spi: dw: export dw_spi_set_cs spi: spi-fsl-espi: Log fifo counters on error spi: imx: Use the longuest possible burst size when in dynamic_burst spi: imx: remove unnecessary check in spi_imx_can_dma spi: imx: Use correct number of bytes per words spi: imx: Use dynamic bursts only when bits_per_word is 8, 16 or 32 ...
Diffstat (limited to 'include/linux/spi/spi-mem.h')
-rw-r--r--include/linux/spi/spi-mem.h14
1 files changed, 13 insertions, 1 deletions
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index 4fa34a227a0f..b2bd4b4127c4 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -124,7 +124,8 @@ struct spi_mem_op {
/**
* struct spi_mem - describes a SPI memory device
* @spi: the underlying SPI device
- * @drvpriv: spi_mem_drviver private data
+ * @drvpriv: spi_mem_driver private data
+ * @name: name of the SPI memory device
*
* Extra information that describe the SPI memory device and may be needed by
* the controller to properly handle this device should be placed here.
@@ -135,6 +136,7 @@ struct spi_mem_op {
struct spi_mem {
struct spi_device *spi;
void *drvpriv;
+ const char *name;
};
/**
@@ -167,6 +169,13 @@ static inline void *spi_mem_get_drvdata(struct spi_mem *mem)
* limitations)
* @supports_op: check if an operation is supported by the controller
* @exec_op: execute a SPI memory operation
+ * @get_name: get a custom name for the SPI mem device from the controller.
+ * This might be needed if the controller driver has been ported
+ * to use the SPI mem layer and a custom name is used to keep
+ * mtdparts compatible.
+ * Note that if the implementation of this function allocates memory
+ * dynamically, then it should do so with devm_xxx(), as we don't
+ * have a ->free_name() function.
*
* This interface should be implemented by SPI controllers providing an
* high-level interface to execute SPI memory operation, which is usually the
@@ -178,6 +187,7 @@ struct spi_controller_mem_ops {
const struct spi_mem_op *op);
int (*exec_op)(struct spi_mem *mem,
const struct spi_mem_op *op);
+ const char *(*get_name)(struct spi_mem *mem);
};
/**
@@ -236,6 +246,8 @@ bool spi_mem_supports_op(struct spi_mem *mem,
int spi_mem_exec_op(struct spi_mem *mem,
const struct spi_mem_op *op);
+const char *spi_mem_get_name(struct spi_mem *mem);
+
int spi_mem_driver_register_with_owner(struct spi_mem_driver *drv,
struct module *owner);