During i2c controller initialization, when fifo flush fails return error
instead of returning the error during exit.
Signed-off-by: Shardar Shariff Md
---
Changes in v11:
- Fix smatch error for below warning
tegra_i2c_init warn: unused return: err = tegra_i2c_flush_fifos()
---
---
drivers
After CONFIG_LOAD register is programmed instead of explicitly waiting
for timeout, use readl_poll_timeout() to check for register value to get
updated or wait till timeout.
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Use readl_poll_timeout_atomic() function as *wait_for_config_load()
function can be called from interrupt context.
Signed-off-by: Shardar Shariff Md
---
Changes in v10:
- Rebase on top of [PATCH V2 0/9] Some Tegra I2C Updates
Changes in v11:
- Fix checkpatch error of using in_atomic() API
After CONFIG_LOAD register is programmed instead of explicitly waiting
for timeout, use readl_poll_timeout() to check for register value to get
updated or wait till timeout.
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move
During i2c controller initialization, when fifo flush fails return error
instead of returning the error during exit.
Signed-off-by: Shardar Shariff Md
---
Changes in v11:
- Fix smatch error for below warning
tegra_i2c_init warn: unused return: err = tegra_i2c_flush_fifos()
---
---
drivers
Use readl_poll_timeout_atomic() function as *wait_for_config_load()
function can be called from interrupt context.
Signed-off-by: Shardar Shariff Md
---
Changes in v10:
- Rebase on top of [PATCH V2 0/9] Some Tegra I2C Updates
Changes in v11:
- Fix checkpatch error of using in_atomic() API
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
is not emptied. Now when dma driver tasklet callback function
tries to check cb_desc and delete the cb_node (re-initialized node) kernel
crashes.
Fix: Empty the cb_desc data structure during tegra_dma_terminate_all()
routine if there are no pending transfers.
Signed-off-by: Shardar Shariff Md
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
After CONFIG_LOAD register programing instead of explicitly waiting for
timeout, use readx_poll_timeout() to check for register value to get
updated or wait till timeout.
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
Initialize default channel slave_id(req_sel) to invalid id
(i.e max supported slave id + 1) to avoid overwriting of slave_id
during tegra_dma_slave_config() with client data if slave_id
is not initialized through DT
Signed-off-by: Shardar Shariff Md
---
- Instead of initializing the slave id to
Initialize default channel slave_id(req_sel) to invalid id
(i.e max supported slave id + 1) to avoid overwriting of slave_id
during tegra_dma_slave_config() with client data if slave_id
is not initialized through DT
Signed-off-by: Shardar Shariff Md
---
Changes from v1:
- Instead of
into FIFO which
make sure HW to not clear the fifo. Also disable the packet mode before
acknowledging errors (ARB lost/NACK error) to not process any stale data.
As error interrupts are enabled before posting the packet header use
spinlock to avoid preempting.
Signed-off-by: Shardar Shariff Md
macro HZ.
Signed-off-by: Shardar Shariff Md
Changes since v1:
- Add separate function for config load handling
---
drivers/i2c/busses/i2c-tegra.c | 39 +--
1 file changed, 25 insertions(+), 14 deletions(-)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Initialize default channel slave_id(req_sel) to invalid id
(i.e max supported slave id + 1) to avoid overwriting of slave_id
during tegra_dma_slave_config() with client data if slave_id
is not initialized through DT
Signed-off-by: Shardar Shariff Md
---
Changes from v1:
- Instead of
Instead of calculating timeout for the config load during init,
calculate it after config load register is written by using
readx_poll_timeout().
Signed-off-by: Shardar Shariff Md
Changes since v1:
- Split timeout calculation to seperate patch
---
drivers/i2c/busses/i2c-tegra.c | 25
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Disable clock before returning error in tegra_i2c_init()
Signed-off-by: Shardar Shariff Md
---
Changes since v1:
- Move current patch as separate patch
---
drivers/i2c/busses/i2c-tegra.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-tegra.c b
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
Instead of calculating timeout for the config load during init,
calculate it after config load register is written by using
readx_poll_timeout().
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move disabling of clock to
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Disable clock before returning error in tegra_i2c_init()
Signed-off-by: Shardar Shariff Md
---
Changes in v5:
- Move current patch as separate patch
Changes in v6:
- Remove unnecessary line
---
drivers/i2c/busses/i2c-tegra.c | 7 ---
1 file changed, 4 insertions(+), 3 deletions(-)
diff
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Instead of calculating timeout for the config load during init,
calculate it after config load register is written by using
readx_poll_timeout().
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move disabling of clock to
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
Instead of calculating timeout for the config load during init,
calculate it after config load register is written by using
readx_poll_timeout().
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move disabling of clock to
Disable clock before returning error in tegra_i2c_init() as its leaves
i2c clock ON in case of error and never turns off again as it will have
unbalanced clock enable/disable
Signed-off-by: Shardar Shariff Md
---
Changes in v5:
- Move current patch as separate patch
Changes in v6:
- Remove
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Initialize default channel slave_id(req_sel) to -1 to avoid
overwriting of slave_id with client data as zero is the
valid slave_id(request_select).
Signed-off-by: Shardar Shariff Md
---
drivers/dma/tegra20-apb-dma.c | 7 ---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a
From: Venkat Reddy Talla
Adding max20024 compatible string to the device id list
to support both max77620 and max20024 devices.
Signed-off-by: Venkat Reddy Talla
---
drivers/gpio/gpio-max77620.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpio-max77620.c b/drivers/gpio/gpi
From: Venkat Reddy Talla
max77620_reuglator_pdata structure variable reg_idata
is not used anywhere in the regulator driver, so removing it.
Signed-off-by: Venkat Reddy Talla
---
drivers/regulator/max77620-regulator.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/regulator/max7762
After CONFIG_LOAD register is programmed instead of explicitly waiting
for timeout, use readx_poll_timeout() to check for register value to get
updated or wait till timeout.
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move
Use readl_poll_timeout_atomic() function as *wait_for_config_load()
function can be called from atomic context.
Signed-off-by: Shardar Shariff Md
---
drivers/i2c/busses/i2c-tegra.c | 9 +++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-tegra.c b
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
Define separate function for configuration load register handling
to make it use by different functions later.
Signed-off-by: Shardar Shariff Md
---
Changes in v2:
- Remove unnecessary paranthesis and align to 80 characters per line
Changes in v3:
- Add separate function for config load
After CONFIG_LOAD register is programmed instead of explicitly waiting
for timeout, use readl_poll_timeout() to check for register value to get
updated or wait till timeout.
Signed-off-by: Shardar Shariff Md
---
Changes in v4:
- Split timeout calculation to separate patch
Changes in v5:
- Move
Use readl_poll_timeout_atomic() function as *wait_for_config_load()
function can be called from atomic context.
Signed-off-by: Shardar Shariff Md
---
Changes in v10:
- Rebase on top of [PATCH V2 0/9] Some Tegra I2C Updates
---
---
drivers/i2c/busses/i2c-tegra.c | 9 +++--
1 file changed, 7
packet into FIFO
which make sure HW to not clear the fifo. Also disable the packet mode
before acknowledging errors (ARB lost/NACK error) to not process any
stale data. As error interrupts are enabled before posting the packet
header use spinlock to avoid preempting.
Signed-off-by: Shardar Shariff
aster-mode" property to enable multimaster specific
prerequisites:
1. Enable 1st level clock always set.
2. Disable 2nd level clock gating (slcg which is supported from
T124 SOC and later chips)
Signed-off-by: Shardar Shariff Md
---
drivers/i2c/busses/i
- Document the usage "nvidia,multimaster-mode" property
for enabling multimaster mode.
- Add compatible string for Tegra 210 SOC.
Signed-off-by: Shardar Shariff Md
---
Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt | 4
1 file changed, 4 insertions(+)
di
s for multi-master bus if "multi-master"
dt property entry is added.
1. Enable 1st level clock always set.
2. Disable 2nd level clock gating (slcg which
is supported from T124 SOC and later chips)
Signed-off-by: Shardar Shariff Md
---
drivers/i2c/busses/i
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