From: Jorge Ramirez-Ortiz <jorge@foundries.io>
To: jorge@foundries.io, jens.wiklander@linaro.org, sumit.garg@linaro.org
Cc: ricardo@foundries.io, mike@foundries.io,
tee-dev@lists.linaro.org, linux-kernel@vger.kernel.org
Subject: [PATCH] drivers: optee: i2c: add bus retry configuration
Date: Wed, 16 Sep 2020 17:27:32 +0200 [thread overview]
Message-ID: <20200916152732.23604-1-jorge@foundries.io> (raw)
Allow OP-TEE to specify the number of retries in the adaptor.
Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
---
drivers/tee/optee/rpc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/tee/optee/rpc.c b/drivers/tee/optee/rpc.c
index 1e3614e4798f..2d46a9ecb1de 100644
--- a/drivers/tee/optee/rpc.c
+++ b/drivers/tee/optee/rpc.c
@@ -58,6 +58,7 @@ static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
struct tee_param *params;
size_t i;
int ret = -EOPNOTSUPP;
+ int retries = 0;
u8 attr[] = {
TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
@@ -102,12 +103,17 @@ static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
client.addr = params[0].u.value.c;
snprintf(client.name, I2C_NAME_SIZE, "i2c%d", client.adapter->nr);
+ /* cache the current value */
+ retries = client.adapter->retries;
+
switch (params[0].u.value.a) {
case OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD:
+ client.adapter->retries = params[1].u.value.b;
ret = i2c_master_recv(&client, params[2].u.memref.shm->kaddr,
params[2].u.memref.size);
break;
case OPTEE_MSG_RPC_CMD_I2C_TRANSFER_WR:
+ client.adapter->retries = params[1].u.value.b;
ret = i2c_master_send(&client, params[2].u.memref.shm->kaddr,
params[2].u.memref.size);
break;
@@ -126,6 +132,7 @@ static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
arg->ret = TEEC_SUCCESS;
}
+ client.adapter->retries = retries;
i2c_put_adapter(client.adapter);
kfree(params);
return;
--
2.17.1
next reply other threads:[~2020-09-16 18:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-16 15:27 Jorge Ramirez-Ortiz [this message]
2020-09-22 16:38 ` Jens Wiklander
2020-09-23 11:18 ` Jorge Ramirez-Ortiz, Foundries
2020-09-23 11:26 ` Jorge Ramirez-Ortiz, Foundries
2020-09-23 12:13 ` Jens Wiklander
2020-09-23 13:51 ` Jorge Ramirez-Ortiz, Foundries
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200916152732.23604-1-jorge@foundries.io \
--to=jorge@foundries.io \
--cc=jens.wiklander@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mike@foundries.io \
--cc=ricardo@foundries.io \
--cc=sumit.garg@linaro.org \
--cc=tee-dev@lists.linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®