diff options
| author | Sourabh Banerjee <sbanerje@codeaurora.org> | 2015-02-27 19:18:11 +0530 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-21 08:16:03 +0200 |
| commit | f36cffc07a3744bd39d8874d85e59fac45af39d3 (patch) | |
| tree | 479de9865dfd90121128e144b466d2f16b75cc96 /src/soc/qualcomm/ipq806x | |
| parent | 44c51058909ccba2461aca78aa9de131b47b49da (diff) | |
ipq806x: i2c: write function fixed to avoid spurious success
The qup_i2c_write_fifo() made to query QUP_I2C_MASTER_STATUS after QUP
transitions into PAUSE state to ensure that it captures the correct status.
Handled more error bits.
BRANCH=chromeos-2013.04
BUG=chrome-os-partner:35328
TEST=Booted up storm P0.2, verified that the TPM on GSBI1 works.
Verified that SUCCESS is not reported when the write FIFO has failed.
Change-Id: Ia91638d37b3fa8449630aa2cf932114363b2db78
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 75e0d59d2e6ba03182003f22944dbf99ce3eb412
Original-Change-Id: Ic4e8e85686499ce71ad3258b52e687ceff36a1f8
Original-Signed-off-by: Sourabh Banerjee <sbanerje@codeaurora.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/254495
Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/9823
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/soc/qualcomm/ipq806x')
| -rw-r--r-- | src/soc/qualcomm/ipq806x/include/soc/qup.h | 5 | ||||
| -rw-r--r-- | src/soc/qualcomm/ipq806x/qup.c | 8 |
2 files changed, 12 insertions, 1 deletions
diff --git a/src/soc/qualcomm/ipq806x/include/soc/qup.h b/src/soc/qualcomm/ipq806x/include/soc/qup.h index a12f6c5f86..5168b19cc0 100644 --- a/src/soc/qualcomm/ipq806x/include/soc/qup.h +++ b/src/soc/qualcomm/ipq806x/include/soc/qup.h @@ -109,7 +109,9 @@ #define QUP_I2C_INVALID_READ_ADDR (1 << 24) #define QUP_I2C_INVALID_TAG (1 << 23) #define QUP_I2C_FAILED_MASK (0x3 << 6) +#define QUP_I2C_INVALID_WRITE (1 << 5) #define QUP_I2C_ARB_LOST (1 << 4) +#define QUP_I2C_PACKET_NACK (1 << 3) #define QUP_I2C_BUS_ERROR (1 << 2) typedef enum { @@ -123,6 +125,9 @@ typedef enum { QUP_ERR_I2C_BUS_ERROR, QUP_ERR_I2C_INVALID_SLAVE_ADDR, QUP_ERR_XFER_FAIL, + QUP_ERR_I2C_NACK, + QUP_ERR_I2C_INVALID_WRITE, + QUP_ERR_I2C_INVALID_TAG, QUP_ERR_UNDEFINED, } qup_return_t; diff --git a/src/soc/qualcomm/ipq806x/qup.c b/src/soc/qualcomm/ipq806x/qup.c index 72ba724e8b..25adfc18db 100644 --- a/src/soc/qualcomm/ipq806x/qup.c +++ b/src/soc/qualcomm/ipq806x/qup.c @@ -63,6 +63,12 @@ static qup_return_t qup_i2c_master_status(gsbi_id_t gsbi_id) return QUP_ERR_I2C_ARB_LOST; if (reg_val & QUP_I2C_BUS_ERROR) return QUP_ERR_I2C_BUS_ERROR; + if (reg_val & QUP_I2C_INVALID_WRITE) + return QUP_ERR_I2C_INVALID_WRITE; + if (reg_val & QUP_I2C_PACKET_NACK) + return QUP_ERR_I2C_NACK; + if (reg_val & QUP_I2C_INVALID_TAG) + return QUP_ERR_I2C_INVALID_TAG; return QUP_SUCCESS; } @@ -193,7 +199,7 @@ static qup_return_t qup_i2c_write_fifo(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj, return ret; qup_set_state(gsbi_id, QUP_STATE_PAUSE); - return QUP_SUCCESS; + return qup_i2c_master_status(gsbi_id); } static qup_return_t qup_i2c_write(gsbi_id_t gsbi_id, uint8_t mode, |