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tegra124: add frame header info to SPI channel struct

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This adds a frame header byte and an enable switch to the
SPI channel struct. The current use case is so that mainboard
code can set the frame header for the CrOS EC.

BUG=none
BRANCH=none
TEST=tested on nyan (with follow-up CLs)
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: I844ebfcb6fbf16b2fc7f775086f2803e026f9d08
Reviewed-on: https://chromium-review.googlesource.com/174638
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
David Hendricks 2013-10-24 21:40:52 -07:00 • committed by chrome-internal-fetch
commit e24773eb94
1 changed files with 6 additions and 0 deletions
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6
src/soc/nvidia/tegra124/spi.h
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@ -49,6 +49,12 @@ enum spi_xfer_mode {
struct tegra_spi_channel {
struct spi_slave slave;
struct tegra_spi_regs *regs;
/* stuff that is specific to the attached device */
int rx_frame_header_enable;
u8 frame_header;
/* context (used internally) */
u8 *in_buf, *out_buf;
struct apb_dma_channel *dma_out, *dma_in;
enum spi_xfer_mode xfer_mode;