diff options
| author | Roy Pledge | 2018-12-10 17:50:17 +0100 |
|---|---|---|
| committer | Li Yang | 2019-01-11 22:06:54 +0100 |
| commit | 11c8bac9b3877fb8d8b4674f4744c1b5937956ba (patch) | |
| tree | 356decf725fffb72f8f58a8de624b49a55254ac7 /drivers/soc/fsl/dpio/dpio.c | |
| parent | soc: fsl: dpio: use a cpumask to identify which cpus are unused (diff) | |
| download | kernel-qcow2-linux-11c8bac9b3877fb8d8b4674f4744c1b5937956ba.tar.gz kernel-qcow2-linux-11c8bac9b3877fb8d8b4674f4744c1b5937956ba.tar.xz kernel-qcow2-linux-11c8bac9b3877fb8d8b4674f4744c1b5937956ba.zip | |
soc: fsl: dpio: perform DPIO Reset on Probe
Invoke a DPIO reset command when a DPIO device is probed. This
will ensure the QBMan portal is in the state the driver expects.
Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Diffstat (limited to 'drivers/soc/fsl/dpio/dpio.c')
| -rw-r--r-- | drivers/soc/fsl/dpio/dpio.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/soc/fsl/dpio/dpio.c b/drivers/soc/fsl/dpio/dpio.c index ff37c80e11a0..521bc6946317 100644 --- a/drivers/soc/fsl/dpio/dpio.c +++ b/drivers/soc/fsl/dpio/dpio.c @@ -196,3 +196,26 @@ int dpio_get_api_version(struct fsl_mc_io *mc_io, return 0; } + +/** + * dpio_reset() - Reset the DPIO, returns the object to initial state. + * @mc_io: Pointer to MC portal's I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @token: Token of DPIO object + * + * Return: '0' on Success; Error code otherwise. + */ +int dpio_reset(struct fsl_mc_io *mc_io, + u32 cmd_flags, + u16 token) +{ + struct fsl_mc_command cmd = { 0 }; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPIO_CMDID_RESET, + cmd_flags, + token); + + /* send command to mc*/ + return mc_send_command(mc_io, &cmd); +} |