Merge branch '2020-06-26-more-Kconfig-migration' into next

[platform/kernel/u-boot.git] / include / spi.h

diff --git a/include/spi.h b/include/spi.h
index 852f570..9b4fb8d 100644 (file)
--- a/include/spi.h
+++ b/include/spi.h
@@ -10,6 +10,7 @@
 #define _SPI_H_
 
 #include <common.h>
+#include <linux/bitops.h>
 
 /* SPI mode flags */
 #define SPI_CPHA       BIT(0)                  /* clock phase */
@@ -38,7 +39,7 @@
 
 #define SPI_DEFAULT_WORDLEN    8
 
-#ifdef CONFIG_DM_SPI
+#if CONFIG_IS_ENABLED(DM_SPI)
 /* TODO(sjg@chromium.org): Remove this and use max_hz from struct spi_slave */
 struct dm_spi_bus {
        uint max_hz;
@@ -67,6 +68,39 @@ struct dm_spi_slave_platdata {
 #endif /* CONFIG_DM_SPI */
 
 /**
+ * enum spi_clock_phase - indicates  the clock phase to use for SPI (CPHA)
+ *
+ * @SPI_CLOCK_PHASE_FIRST: Data sampled on the first phase
+ * @SPI_CLOCK_PHASE_SECOND: Data sampled on the second phase
+ */
+enum spi_clock_phase {
+       SPI_CLOCK_PHASE_FIRST,
+       SPI_CLOCK_PHASE_SECOND,
+};
+
+/**
+ * enum spi_wire_mode - indicates the number of wires used for SPI
+ *
+ * @SPI_4_WIRE_MODE: Normal bidirectional mode with MOSI and MISO
+ * @SPI_3_WIRE_MODE: Unidirectional version with a single data line SISO
+ */
+enum spi_wire_mode {
+       SPI_4_WIRE_MODE,
+       SPI_3_WIRE_MODE,
+};
+
+/**
+ * enum spi_polarity - indicates the polarity of the SPI bus (CPOL)
+ *
+ * @SPI_POLARITY_LOW: Clock is low in idle state
+ * @SPI_POLARITY_HIGH: Clock is high in idle state
+ */
+enum spi_polarity {
+       SPI_POLARITY_LOW,
+       SPI_POLARITY_HIGH,
+};
+
+/**
  * struct spi_slave - Representation of a SPI slave
  *
  * For driver model this is the per-child data used by the SPI bus. It can
@@ -97,7 +131,7 @@ struct dm_spi_slave_platdata {
  * @flags:             Indication of SPI flags.
  */
 struct spi_slave {
-#ifdef CONFIG_DM_SPI
+#if CONFIG_IS_ENABLED(DM_SPI)
        struct udevice *dev;    /* struct spi_slave is dev->parentdata */
        uint max_hz;
        uint speed;
@@ -283,7 +317,7 @@ void spi_flash_copy_mmap(void *data, void *offset, size_t len);
  */
 int spi_cs_is_valid(unsigned int bus, unsigned int cs);
 
-#ifndef CONFIG_DM_SPI
+#if !CONFIG_IS_ENABLED(DM_SPI)
 /**
  * Activate a SPI chipselect.
  * This function is provided by the board code when using a driver
@@ -333,7 +367,7 @@ static inline int spi_w8r8(struct spi_slave *slave, unsigned char byte)
        return ret < 0 ? ret : din[1];
 }
 
-#ifdef CONFIG_DM_SPI
+#if CONFIG_IS_ENABLED(DM_SPI)
 
 /**
  * struct spi_cs_info - Information about a bus chip select