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-rw-r--r--include/linux/platform_data/spi-ep93xx.h4
-rw-r--r--include/linux/spi/pxa2xx_spi.h1
-rw-r--r--include/linux/spi/spi-mem.h12
-rw-r--r--include/linux/spi/spi.h24
-rw-r--r--include/linux/spi/spi_bitbang.h1
5 files changed, 33 insertions, 9 deletions
diff --git a/include/linux/platform_data/spi-ep93xx.h b/include/linux/platform_data/spi-ep93xx.h
index eb16c6739ac2..b439f2a896e0 100644
--- a/include/linux/platform_data/spi-ep93xx.h
+++ b/include/linux/platform_data/spi-ep93xx.h
@@ -6,13 +6,9 @@ struct spi_device;
/**
* struct ep93xx_spi_info - EP93xx specific SPI descriptor
- * @chipselect: array of gpio numbers to use as chip selects
- * @num_chipselect: ARRAY_SIZE(chipselect)
* @use_dma: use DMA for the transfers
*/
struct ep93xx_spi_info {
- int *chipselect;
- int num_chipselect;
bool use_dma;
};
diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h
index c1c59473cef9..6005f0126631 100644
--- a/include/linux/spi/pxa2xx_spi.h
+++ b/include/linux/spi/pxa2xx_spi.h
@@ -25,6 +25,7 @@ struct dma_chan;
struct pxa2xx_spi_controller {
u16 num_chipselect;
u8 enable_dma;
+ u8 dma_burst_size;
bool is_slave;
/* DMA engine specific config */
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index 3703d0dcac2e..af9ff2f0f1b2 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -295,6 +295,10 @@ int spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
void spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
const struct spi_mem_op *op,
struct sg_table *sg);
+
+bool spi_mem_default_supports_op(struct spi_mem *mem,
+ const struct spi_mem_op *op);
+
#else
static inline int
spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
@@ -310,6 +314,14 @@ spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
struct sg_table *sg)
{
}
+
+static inline
+bool spi_mem_default_supports_op(struct spi_mem *mem,
+ const struct spi_mem_op *op)
+{
+ return false;
+}
+
#endif /* CONFIG_SPI_MEM */
int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 662b336aa2e4..053abd22ad31 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -143,7 +143,7 @@ struct spi_device {
u32 max_speed_hz;
u8 chip_select;
u8 bits_per_word;
- u16 mode;
+ u32 mode;
#define SPI_CPHA 0x01 /* clock phase */
#define SPI_CPOL 0x02 /* clock polarity */
#define SPI_MODE_0 (0|0) /* (original MicroWire) */
@@ -330,6 +330,9 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* must fail if an unrecognized or unsupported mode is requested.
* It's always safe to call this unless transfers are pending on
* the device whose settings are being modified.
+ * @set_cs_timing: optional hook for SPI devices to request SPI master
+ * controller for configuring specific CS setup time, hold time and inactive
+ * delay interms of clock counts
* @transfer: adds a message to the controller's transfer queue.
* @cleanup: frees controller-specific state
* @can_dma: determine whether this controller supports DMA
@@ -363,6 +366,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* @unprepare_transfer_hardware: there are currently no more messages on the
* queue so the subsystem notifies the driver that it may relax the
* hardware by issuing this call
+ *
* @set_cs: set the logic level of the chip select line. May be called
* from interrupt context.
* @prepare_message: set up the controller to transfer a single message,
@@ -439,13 +443,12 @@ struct spi_controller {
u16 dma_alignment;
/* spi_device.mode flags understood by this controller driver */
- u16 mode_bits;
+ u32 mode_bits;
/* bitmask of supported bits_per_word for transfers */
u32 bits_per_word_mask;
#define SPI_BPW_MASK(bits) BIT((bits) - 1)
-#define SPI_BIT_MASK(bits) (((bits) == 32) ? ~0U : (BIT(bits) - 1))
-#define SPI_BPW_RANGE_MASK(min, max) (SPI_BIT_MASK(max) - SPI_BIT_MASK(min - 1))
+#define SPI_BPW_RANGE_MASK(min, max) GENMASK((max) - 1, (min) - 1)
/* limits on transfer speed */
u32 min_speed_hz;
@@ -489,6 +492,17 @@ struct spi_controller {
*/
int (*setup)(struct spi_device *spi);
+ /*
+ * set_cs_timing() method is for SPI controllers that supports
+ * configuring CS timing.
+ *
+ * This hook allows SPI client drivers to request SPI controllers
+ * to configure specific CS timing through spi_set_cs_timing() after
+ * spi_setup().
+ */
+ void (*set_cs_timing)(struct spi_device *spi, u8 setup_clk_cycles,
+ u8 hold_clk_cycles, u8 inactive_clk_cycles);
+
/* bidirectional bulk transfers
*
* + The transfer() method may not sleep; its main role is
@@ -1277,7 +1291,7 @@ struct spi_board_info {
/* mode becomes spi_device.mode, and is essential for chips
* where the default of SPI_CS_HIGH = 0 is wrong.
*/
- u16 mode;
+ u32 mode;
/* ... may need additional spi_device chip config data here.
* avoid stuff protocol drivers can set; but include stuff
diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index b7e021b274dc..4444c2a992cb 100644
--- a/include/linux/spi/spi_bitbang.h
+++ b/include/linux/spi/spi_bitbang.h
@@ -44,6 +44,7 @@ extern int spi_bitbang_setup_transfer(struct spi_device *spi,
/* start or stop queue processing */
extern int spi_bitbang_start(struct spi_bitbang *spi);
+extern int spi_bitbang_init(struct spi_bitbang *spi);
extern void spi_bitbang_stop(struct spi_bitbang *spi);
#endif /* __SPI_BITBANG_H */