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| author | Randall Spangler <rspangler@chromium.org> | 2014-02-27 13:26:10 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-03-17 20:05:47 -0600 |
| commit | a60702833150b8f9263a5f1fb9a6b64774cd44f3 (patch) | |
| tree | 32581d04ab69321f2044c3cefc0f7560b384a65e /drivers/misc/cros_ec.c | |
| parent | 2d8ede58ca5873f485c7691b1ca1c1bc6aae7212 (diff) | |
| download | u-boot-imx-a60702833150b8f9263a5f1fb9a6b64774cd44f3.zip u-boot-imx-a60702833150b8f9263a5f1fb9a6b64774cd44f3.tar.gz u-boot-imx-a60702833150b8f9263a5f1fb9a6b64774cd44f3.tar.bz2 | |
cros_ec: spi: Add support for EC protocol version 3
Protocol version 3 will be attempted first; if the EC doesn't support
it, u-boot will fall back to the old protocol version (2).
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/misc/cros_ec.c')
| -rw-r--r-- | drivers/misc/cros_ec.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c index a7716b8..5682d39 100644 --- a/drivers/misc/cros_ec.c +++ b/drivers/misc/cros_ec.c @@ -218,6 +218,11 @@ static int send_command_proto3(struct cros_ec_dev *dev, return in_bytes; switch (dev->interface) { +#ifdef CONFIG_CROS_EC_SPI + case CROS_EC_IF_SPI: + rv = cros_ec_spi_packet(dev, out_bytes, in_bytes); + break; +#endif case CROS_EC_IF_NONE: /* TODO: support protocol 3 for LPC, I2C; for now fall through */ default: @@ -665,6 +670,13 @@ static int cros_ec_check_version(struct cros_ec_dev *dev) * So for now, just read all the data anyway. */ + /* Try sending a version 3 packet */ + dev->protocol_version = 3; + if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req), + (uint8_t **)&resp, sizeof(*resp)) > 0) { + return 0; + } + /* Try sending a version 2 packet */ dev->protocol_version = 2; if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req), |