* [PATCHv7] drivers: optee: allow op-tee to access devices on the i2c bus
@ 2020-08-11 17:55 Jorge Ramirez-Ortiz
2020-08-12 8:44 ` Jens Wiklander
0 siblings, 1 reply; 3+ messages in thread
From: Jorge Ramirez-Ortiz @ 2020-08-11 17:55 UTC (permalink / raw)
To: jorge, jens.wiklander; +Cc: sumit.garg, ricardo, mike, tee-dev, linux-kernel
Some secure elements like NXP's SE050 sit on I2C buses. For OP-TEE to
control this type of cryptographic devices it needs coordinated access
to the bus, so collisions and RUNTIME_PM dont get in the way.
This trampoline driver allow OP-TEE to access them.
Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
---
v7: add support for ten bit i2c slave addressing
v6: compile out if CONFIG_I2C not enabled
v5: alphabetic order of includes
v4: remove unnecessary extra line in optee_msg.h
v3: use from/to msg param to support all types of memory
modify OPTEE_MSG_RPC_CMD_I2C_TRANSFER message id
drivers/tee/optee/optee_msg.h | 21 ++++++++
drivers/tee/optee/rpc.c | 95 +++++++++++++++++++++++++++++++++++
2 files changed, 116 insertions(+)
diff --git a/drivers/tee/optee/optee_msg.h b/drivers/tee/optee/optee_msg.h
index 795bc19ae17a..7b2d919da2ac 100644
--- a/drivers/tee/optee/optee_msg.h
+++ b/drivers/tee/optee/optee_msg.h
@@ -419,4 +419,25 @@ struct optee_msg_arg {
*/
#define OPTEE_MSG_RPC_CMD_SHM_FREE 7
+/*
+ * Access a device on an i2c bus
+ *
+ * [in] param[0].u.value.a mode: RD(0), WR(1)
+ * [in] param[0].u.value.b i2c adapter
+ * [in] param[0].u.value.c i2c chip
+ *
+ * [in] param[1].u.value.a i2c control flags
+ *
+ * [in/out] memref[2] buffer to exchange the transfer data
+ * with the secure world
+ *
+ * [out] param[3].u.value.a bytes transferred by the driver
+ */
+#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER 21
+/* I2C master transfer modes */
+#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD 0
+#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER_WR 1
+/* I2C master control flags */
+#define OPTEE_MSG_RPC_CMD_I2C_FLAGS_TEN_BIT BIT(0)
+
#endif /* _OPTEE_MSG_H */
diff --git a/drivers/tee/optee/rpc.c b/drivers/tee/optee/rpc.c
index b4ade54d1f28..b6178761d79f 100644
--- a/drivers/tee/optee/rpc.c
+++ b/drivers/tee/optee/rpc.c
@@ -7,6 +7,7 @@
#include <linux/delay.h>
#include <linux/device.h>
+#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/tee_drv.h>
#include "optee_private.h"
@@ -49,6 +50,97 @@ static void handle_rpc_func_cmd_get_time(struct optee_msg_arg *arg)
arg->ret = TEEC_ERROR_BAD_PARAMETERS;
}
+#if IS_ENABLED(CONFIG_I2C)
+static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
+ struct optee_msg_arg *arg)
+{
+ struct i2c_client client = { 0 };
+ struct tee_param *params;
+ int i, ret = -EOPNOTSUPP;
+ uint32_t attr[] = {
+ TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
+ TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
+ TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT,
+ TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT,
+ };
+
+ if (arg->num_params != ARRAY_SIZE(attr)) {
+ arg->ret = TEEC_ERROR_BAD_PARAMETERS;
+ return;
+ }
+
+ params = kmalloc_array(arg->num_params, sizeof(struct tee_param),
+ GFP_KERNEL);
+ if (!params) {
+ arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
+ return;
+ }
+
+ if (optee_from_msg_param(params, arg->num_params, arg->params))
+ goto bad;
+
+ for (i = 0; i < arg->num_params; i++) {
+ if ((params[i].attr & TEE_IOCTL_PARAM_ATTR_TYPE_MASK)
+ != attr[i])
+ goto bad;
+ }
+
+ client.adapter = i2c_get_adapter(params[0].u.value.b);
+ if (!client.adapter)
+ goto bad;
+
+ if (params[1].u.value.a & OPTEE_MSG_RPC_CMD_I2C_FLAGS_TEN_BIT) {
+ if (!i2c_check_functionality(client.adapter,
+ I2C_FUNC_10BIT_ADDR)) {
+ i2c_put_adapter(client.adapter);
+ goto bad;
+ }
+
+ client.flags = I2C_CLIENT_TEN;
+ }
+
+ client.addr = params[0].u.value.c;
+ snprintf(client.name, I2C_NAME_SIZE, "i2c%d", client.adapter->nr);
+
+ switch (params[0].u.value.a) {
+ case OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD:
+ 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:
+ ret = i2c_master_send(&client, params[2].u.memref.shm->kaddr,
+ params[2].u.memref.size);
+ break;
+ default:
+ i2c_put_adapter(client.adapter);
+ goto bad;
+ }
+
+ if (ret < 0) {
+ arg->ret = TEEC_ERROR_COMMUNICATION;
+ } else {
+ params[3].u.value.a = ret;
+ arg->ret = TEEC_SUCCESS;
+
+ if (optee_to_msg_param(arg->params, arg->num_params, params))
+ arg->ret = TEEC_ERROR_BAD_PARAMETERS;
+ }
+
+ i2c_put_adapter(client.adapter);
+ kfree(params);
+ return;
+bad:
+ kfree(params);
+ arg->ret = TEEC_ERROR_BAD_PARAMETERS;
+}
+#else
+static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
+ struct optee_msg_arg *arg)
+{
+ arg->ret = TEEC_ERROR_COMMUNICATION;
+}
+#endif
+
static struct wq_entry *wq_entry_get(struct optee_wait_queue *wq, u32 key)
{
struct wq_entry *w;
@@ -382,6 +474,9 @@ static void handle_rpc_func_cmd(struct tee_context *ctx, struct optee *optee,
case OPTEE_MSG_RPC_CMD_SHM_FREE:
handle_rpc_func_cmd_shm_free(ctx, arg);
break;
+ case OPTEE_MSG_RPC_CMD_I2C_TRANSFER:
+ handle_rpc_func_cmd_i2c_transfer(ctx, arg);
+ break;
default:
handle_rpc_supp_cmd(ctx, arg);
}
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCHv7] drivers: optee: allow op-tee to access devices on the i2c bus
2020-08-11 17:55 [PATCHv7] drivers: optee: allow op-tee to access devices on the i2c bus Jorge Ramirez-Ortiz
@ 2020-08-12 8:44 ` Jens Wiklander
2020-08-12 11:47 ` Jorge Ramirez-Ortiz, Foundries
0 siblings, 1 reply; 3+ messages in thread
From: Jens Wiklander @ 2020-08-12 8:44 UTC (permalink / raw)
To: Jorge Ramirez-Ortiz; +Cc: sumit.garg, ricardo, mike, tee-dev, linux-kernel
On Tue, Aug 11, 2020 at 07:55:31PM +0200, Jorge Ramirez-Ortiz wrote:
> Some secure elements like NXP's SE050 sit on I2C buses. For OP-TEE to
> control this type of cryptographic devices it needs coordinated access
> to the bus, so collisions and RUNTIME_PM dont get in the way.
>
> This trampoline driver allow OP-TEE to access them.
>
> Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
> ---
> v7: add support for ten bit i2c slave addressing
> v6: compile out if CONFIG_I2C not enabled
> v5: alphabetic order of includes
> v4: remove unnecessary extra line in optee_msg.h
> v3: use from/to msg param to support all types of memory
> modify OPTEE_MSG_RPC_CMD_I2C_TRANSFER message id
>
> drivers/tee/optee/optee_msg.h | 21 ++++++++
> drivers/tee/optee/rpc.c | 95 +++++++++++++++++++++++++++++++++++
> 2 files changed, 116 insertions(+)
>
> diff --git a/drivers/tee/optee/optee_msg.h b/drivers/tee/optee/optee_msg.h
> index 795bc19ae17a..7b2d919da2ac 100644
> --- a/drivers/tee/optee/optee_msg.h
> +++ b/drivers/tee/optee/optee_msg.h
> @@ -419,4 +419,25 @@ struct optee_msg_arg {
> */
> #define OPTEE_MSG_RPC_CMD_SHM_FREE 7
>
> +/*
> + * Access a device on an i2c bus
> + *
> + * [in] param[0].u.value.a mode: RD(0), WR(1)
> + * [in] param[0].u.value.b i2c adapter
> + * [in] param[0].u.value.c i2c chip
> + *
> + * [in] param[1].u.value.a i2c control flags
> + *
> + * [in/out] memref[2] buffer to exchange the transfer data
> + * with the secure world
> + *
> + * [out] param[3].u.value.a bytes transferred by the driver
> + */
> +#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER 21
> +/* I2C master transfer modes */
> +#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD 0
> +#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER_WR 1
> +/* I2C master control flags */
> +#define OPTEE_MSG_RPC_CMD_I2C_FLAGS_TEN_BIT BIT(0)
> +
> #endif /* _OPTEE_MSG_H */
> diff --git a/drivers/tee/optee/rpc.c b/drivers/tee/optee/rpc.c
> index b4ade54d1f28..b6178761d79f 100644
> --- a/drivers/tee/optee/rpc.c
> +++ b/drivers/tee/optee/rpc.c
> @@ -7,6 +7,7 @@
>
> #include <linux/delay.h>
> #include <linux/device.h>
> +#include <linux/i2c.h>
> #include <linux/slab.h>
> #include <linux/tee_drv.h>
> #include "optee_private.h"
> @@ -49,6 +50,97 @@ static void handle_rpc_func_cmd_get_time(struct optee_msg_arg *arg)
> arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> }
>
> +#if IS_ENABLED(CONFIG_I2C)
> +static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
> + struct optee_msg_arg *arg)
> +{
> + struct i2c_client client = { 0 };
> + struct tee_param *params;
> + int i, ret = -EOPNOTSUPP;
> + uint32_t attr[] = {
uint32_t seems a randomly chosen type here. The
TEE_IOCTL_PARAM_ATTR_TYPE_* defines fit in a u8.
Consider u8 attr[] = { instead.
> + TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
> + TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
> + TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT,
> + TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT,
> + };
> +
> + if (arg->num_params != ARRAY_SIZE(attr)) {
> + arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> + return;
> + }
> +
> + params = kmalloc_array(arg->num_params, sizeof(struct tee_param),
> + GFP_KERNEL);
> + if (!params) {
> + arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
> + return;
> + }
> +
> + if (optee_from_msg_param(params, arg->num_params, arg->params))
> + goto bad;
> +
> + for (i = 0; i < arg->num_params; i++) {
arg->num_params has an unsigned type. Consider giving i an unsigned type
too.
> + if ((params[i].attr & TEE_IOCTL_PARAM_ATTR_TYPE_MASK)
> + != attr[i])
It looks a bit funny with the comparison at the beginning of the line,
normally we try to leave those at the end of the line. But
optee_from_msg_param() doesn't set any higher bits in params[i].attr so
you could also simplify the expression as:
if (params[i].attr != attr[i])
> + goto bad;
> + }
> +
> + client.adapter = i2c_get_adapter(params[0].u.value.b);
> + if (!client.adapter)
> + goto bad;
> +
> + if (params[1].u.value.a & OPTEE_MSG_RPC_CMD_I2C_FLAGS_TEN_BIT) {
> + if (!i2c_check_functionality(client.adapter,
> + I2C_FUNC_10BIT_ADDR)) {
> + i2c_put_adapter(client.adapter);
> + goto bad;
> + }
> +
> + client.flags = I2C_CLIENT_TEN;
> + }
> +
> + client.addr = params[0].u.value.c;
> + snprintf(client.name, I2C_NAME_SIZE, "i2c%d", client.adapter->nr);
> +
> + switch (params[0].u.value.a) {
> + case OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD:
> + 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:
> + ret = i2c_master_send(&client, params[2].u.memref.shm->kaddr,
> + params[2].u.memref.size);
> + break;
> + default:
> + i2c_put_adapter(client.adapter);
> + goto bad;
> + }
> +
> + if (ret < 0) {
> + arg->ret = TEEC_ERROR_COMMUNICATION;
> + } else {
> + params[3].u.value.a = ret;
> + arg->ret = TEEC_SUCCESS;
> +
> + if (optee_to_msg_param(arg->params, arg->num_params, params))
> + arg->ret = TEEC_ERROR_BAD_PARAMETERS;
Need
arg->ret = TEEC_SUCCESS;
when everything is OK.
> + }
> +
> + i2c_put_adapter(client.adapter);
> + kfree(params);
> + return;
> +bad:
> + kfree(params);
> + arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> +}
> +#else
> +static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
> + struct optee_msg_arg *arg)
> +{
> + arg->ret = TEEC_ERROR_COMMUNICATION;
I'd prefer TEEC_ERROR_NOT_SUPPORTED here.
TEEC_ERROR_NOT_SUPPORTED would need to be defined as:
#define TEEC_ERROR_NOT_SUPPORTED 0xFFFF000A
in optee_private.h
Cheers,
Jens
> +}
> +#endif
> +
> static struct wq_entry *wq_entry_get(struct optee_wait_queue *wq, u32 key)
> {
> struct wq_entry *w;
> @@ -382,6 +474,9 @@ static void handle_rpc_func_cmd(struct tee_context *ctx, struct optee *optee,
> case OPTEE_MSG_RPC_CMD_SHM_FREE:
> handle_rpc_func_cmd_shm_free(ctx, arg);
> break;
> + case OPTEE_MSG_RPC_CMD_I2C_TRANSFER:
> + handle_rpc_func_cmd_i2c_transfer(ctx, arg);
> + break;
> default:
> handle_rpc_supp_cmd(ctx, arg);
> }
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCHv7] drivers: optee: allow op-tee to access devices on the i2c bus
2020-08-12 8:44 ` Jens Wiklander
@ 2020-08-12 11:47 ` Jorge Ramirez-Ortiz, Foundries
0 siblings, 0 replies; 3+ messages in thread
From: Jorge Ramirez-Ortiz, Foundries @ 2020-08-12 11:47 UTC (permalink / raw)
To: Jens Wiklander
Cc: Jorge Ramirez-Ortiz, sumit.garg, ricardo, mike, tee-dev, linux-kernel
On 12/08/20, Jens Wiklander wrote:
> On Tue, Aug 11, 2020 at 07:55:31PM +0200, Jorge Ramirez-Ortiz wrote:
> > Some secure elements like NXP's SE050 sit on I2C buses. For OP-TEE to
> > control this type of cryptographic devices it needs coordinated access
> > to the bus, so collisions and RUNTIME_PM dont get in the way.
> >
> > This trampoline driver allow OP-TEE to access them.
> >
> > Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
> > ---
> > v7: add support for ten bit i2c slave addressing
> > v6: compile out if CONFIG_I2C not enabled
> > v5: alphabetic order of includes
> > v4: remove unnecessary extra line in optee_msg.h
> > v3: use from/to msg param to support all types of memory
> > modify OPTEE_MSG_RPC_CMD_I2C_TRANSFER message id
> >
> > drivers/tee/optee/optee_msg.h | 21 ++++++++
> > drivers/tee/optee/rpc.c | 95 +++++++++++++++++++++++++++++++++++
> > 2 files changed, 116 insertions(+)
> >
> > diff --git a/drivers/tee/optee/optee_msg.h b/drivers/tee/optee/optee_msg.h
> > index 795bc19ae17a..7b2d919da2ac 100644
> > --- a/drivers/tee/optee/optee_msg.h
> > +++ b/drivers/tee/optee/optee_msg.h
> > @@ -419,4 +419,25 @@ struct optee_msg_arg {
> > */
> > #define OPTEE_MSG_RPC_CMD_SHM_FREE 7
> >
> > +/*
> > + * Access a device on an i2c bus
> > + *
> > + * [in] param[0].u.value.a mode: RD(0), WR(1)
> > + * [in] param[0].u.value.b i2c adapter
> > + * [in] param[0].u.value.c i2c chip
> > + *
> > + * [in] param[1].u.value.a i2c control flags
> > + *
> > + * [in/out] memref[2] buffer to exchange the transfer data
> > + * with the secure world
> > + *
> > + * [out] param[3].u.value.a bytes transferred by the driver
> > + */
> > +#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER 21
> > +/* I2C master transfer modes */
> > +#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD 0
> > +#define OPTEE_MSG_RPC_CMD_I2C_TRANSFER_WR 1
> > +/* I2C master control flags */
> > +#define OPTEE_MSG_RPC_CMD_I2C_FLAGS_TEN_BIT BIT(0)
> > +
> > #endif /* _OPTEE_MSG_H */
> > diff --git a/drivers/tee/optee/rpc.c b/drivers/tee/optee/rpc.c
> > index b4ade54d1f28..b6178761d79f 100644
> > --- a/drivers/tee/optee/rpc.c
> > +++ b/drivers/tee/optee/rpc.c
> > @@ -7,6 +7,7 @@
> >
> > #include <linux/delay.h>
> > #include <linux/device.h>
> > +#include <linux/i2c.h>
> > #include <linux/slab.h>
> > #include <linux/tee_drv.h>
> > #include "optee_private.h"
> > @@ -49,6 +50,97 @@ static void handle_rpc_func_cmd_get_time(struct optee_msg_arg *arg)
> > arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> > }
> >
> > +#if IS_ENABLED(CONFIG_I2C)
> > +static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
> > + struct optee_msg_arg *arg)
> > +{
> > + struct i2c_client client = { 0 };
> > + struct tee_param *params;
> > + int i, ret = -EOPNOTSUPP;
> > + uint32_t attr[] = {
> uint32_t seems a randomly chosen type here. The
> TEE_IOCTL_PARAM_ATTR_TYPE_* defines fit in a u8.
> Consider u8 attr[] = { instead.
ok
>
> > + TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
> > + TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
> > + TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT,
> > + TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT,
> > + };
> > +
> > + if (arg->num_params != ARRAY_SIZE(attr)) {
> > + arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> > + return;
> > + }
> > +
> > + params = kmalloc_array(arg->num_params, sizeof(struct tee_param),
> > + GFP_KERNEL);
> > + if (!params) {
> > + arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
> > + return;
> > + }
> > +
> > + if (optee_from_msg_param(params, arg->num_params, arg->params))
> > + goto bad;
> > +
> > + for (i = 0; i < arg->num_params; i++) {
> arg->num_params has an unsigned type. Consider giving i an unsigned type
> too.
ok
>
> > + if ((params[i].attr & TEE_IOCTL_PARAM_ATTR_TYPE_MASK)
> > + != attr[i])
> It looks a bit funny with the comparison at the beginning of the line,
> normally we try to leave those at the end of the line. But
> optee_from_msg_param() doesn't set any higher bits in params[i].attr so
> you could also simplify the expression as:
> if (params[i].attr != attr[i])
ok will do the above
>
> > + goto bad;
> > + }
> > +
> > + client.adapter = i2c_get_adapter(params[0].u.value.b);
> > + if (!client.adapter)
> > + goto bad;
> > +
> > + if (params[1].u.value.a & OPTEE_MSG_RPC_CMD_I2C_FLAGS_TEN_BIT) {
> > + if (!i2c_check_functionality(client.adapter,
> > + I2C_FUNC_10BIT_ADDR)) {
> > + i2c_put_adapter(client.adapter);
> > + goto bad;
> > + }
> > +
> > + client.flags = I2C_CLIENT_TEN;
> > + }
> > +
> > + client.addr = params[0].u.value.c;
> > + snprintf(client.name, I2C_NAME_SIZE, "i2c%d", client.adapter->nr);
> > +
> > + switch (params[0].u.value.a) {
> > + case OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD:
> > + 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:
> > + ret = i2c_master_send(&client, params[2].u.memref.shm->kaddr,
> > + params[2].u.memref.size);
> > + break;
> > + default:
> > + i2c_put_adapter(client.adapter);
> > + goto bad;
> > + }
> > +
> > + if (ret < 0) {
> > + arg->ret = TEEC_ERROR_COMMUNICATION;
> > + } else {
> > + params[3].u.value.a = ret;
> > + arg->ret = TEEC_SUCCESS;
> > +
> > + if (optee_to_msg_param(arg->params, arg->num_params, params))
> > + arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> Need
> arg->ret = TEEC_SUCCESS;
> when everything is OK.
it is already there.
but will do an else so it is more evident
>
> > + }
> > +
> > + i2c_put_adapter(client.adapter);
> > + kfree(params);
> > + return;
> > +bad:
> > + kfree(params);
> > + arg->ret = TEEC_ERROR_BAD_PARAMETERS;
> > +}
> > +#else
> > +static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
> > + struct optee_msg_arg *arg)
> > +{
> > + arg->ret = TEEC_ERROR_COMMUNICATION;
> I'd prefer TEEC_ERROR_NOT_SUPPORTED here.
> TEEC_ERROR_NOT_SUPPORTED would need to be defined as:
> #define TEEC_ERROR_NOT_SUPPORTED 0xFFFF000A
> in optee_private.h
ok
thanks for the quick review on this
>
> Cheers,
> Jens
>
> > +}
> > +#endif
> > +
> > static struct wq_entry *wq_entry_get(struct optee_wait_queue *wq, u32 key)
> > {
> > struct wq_entry *w;
> > @@ -382,6 +474,9 @@ static void handle_rpc_func_cmd(struct tee_context *ctx, struct optee *optee,
> > case OPTEE_MSG_RPC_CMD_SHM_FREE:
> > handle_rpc_func_cmd_shm_free(ctx, arg);
> > break;
> > + case OPTEE_MSG_RPC_CMD_I2C_TRANSFER:
> > + handle_rpc_func_cmd_i2c_transfer(ctx, arg);
> > + break;
> > default:
> > handle_rpc_supp_cmd(ctx, arg);
> > }
> > --
> > 2.17.1
> >
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-08-12 11:47 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-08-11 17:55 [PATCHv7] drivers: optee: allow op-tee to access devices on the i2c bus Jorge Ramirez-Ortiz
2020-08-12 8:44 ` Jens Wiklander
2020-08-12 11:47 ` Jorge Ramirez-Ortiz, Foundries
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