spi: add a bits_per_word to struct spi_board_info

Commit Message

Feng Tang Sept. 1, 2010, 6:24 a.m. UTC

None

Patch

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index a9e5c79..a8690e7 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -350,6 +350,7 @@  struct spi_device *spi_new_device(struct spi_master *master,
 	proxy->chip_select = chip->chip_select;
 	proxy->max_speed_hz = chip->max_speed_hz;
 	proxy->mode = chip->mode;
+	proxy->bits_per_word = chip->bits_per_word;
 	proxy->irq = chip->irq;
 	strlcpy(proxy->modalias, chip->modalias, sizeof(proxy->modalias));
 	proxy->dev.platform_data = (void *) chip->platform_data;
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 92e52a1..f36d0d5 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -698,6 +698,8 @@  static inline ssize_t spi_w8r16(struct spi_device *spi, u8 cmd)
  * @mode: Initializes spi_device.mode; based on the chip datasheet, board
  *	wiring (some devices support both 3WIRE and standard modes), and
  *	possibly presence of an inverter in the chipselect path.
+ * @bits_per_word: Initializes spi_device.bits_per_word, usually it will
+ * be from 8 to 32 bits
  *
  * When adding new SPI devices to the device tree, these structures serve
  * as a partial device template.  They hold information which can't always
@@ -742,6 +744,7 @@  struct spi_board_info {
 	 * where the default of SPI_CS_HIGH = 0 is wrong.
 	 */
 	u8		mode;
+	u8		bits_per_word;
 
 	/* ... may need additional spi_device chip config data here.
 	 * avoid stuff protocol drivers can set; but include stuff