Subject: Re: [PATCH v3 11/15] media: qcom: Switch to generic PAS TZ APIs

From: Sumit Garg <[email-masked]>
Date: Tue, 21 Apr 2026 18:06:21 +0530

Hey Vikash, Dikshita,

On Fri, Mar 27, 2026 at 06:40:39PM +0530, Sumit Garg wrote:
> From: Sumit Garg <[email-masked]>
> 
> Switch qcom media client drivers over to generic PAS TZ APIs. Generic PAS
> TZ service allows to support multiple TZ implementation backends like QTEE
> based SCM PAS service, OP-TEE based PAS service and any further future TZ
> backend service.
> 
> Along with that pass proper PAS ID to set_remote_state API. As per testing
> the SCM backend just ignores it while OP-TEE makes use of it to for proper
> book keeping purpose.
> 
> Signed-off-by: Sumit Garg <[email-masked]>
> ---
>  drivers/media/platform/qcom/iris/Kconfig      | 25 ++++++++++---------
>  .../media/platform/qcom/iris/iris_firmware.c  |  9 ++++---
>  drivers/media/platform/qcom/venus/Kconfig     |  1 +
>  drivers/media/platform/qcom/venus/firmware.c  | 11 ++++----
>  4 files changed, 25 insertions(+), 21 deletions(-)
> 

Can I get an ack from you on this change? I expect this complete
patch-set to land via Qcom SoC tree.

-Sumit

> diff --git a/drivers/media/platform/qcom/iris/Kconfig b/drivers/media/platform/qcom/iris/Kconfig
> index 3c803a05305a..f54b759c18aa 100644
> --- a/drivers/media/platform/qcom/iris/Kconfig
> +++ b/drivers/media/platform/qcom/iris/Kconfig
> @@ -1,13 +1,14 @@
>  config VIDEO_QCOM_IRIS
> -        tristate "Qualcomm iris V4L2 decoder driver"
> -        depends on VIDEO_DEV
> -        depends on ARCH_QCOM || COMPILE_TEST
> -        select V4L2_MEM2MEM_DEV
> -        select QCOM_MDT_LOADER if ARCH_QCOM
> -        select QCOM_SCM
> -        select VIDEOBUF2_DMA_CONTIG
> -        help
> -          This is a V4L2 driver for Qualcomm iris video accelerator
> -          hardware. It accelerates decoding operations on various
> -          Qualcomm SoCs.
> -          To compile this driver as a module choose m here.
> +	tristate "Qualcomm iris V4L2 decoder driver"
> +	depends on VIDEO_DEV
> +	depends on ARCH_QCOM || COMPILE_TEST
> +	select V4L2_MEM2MEM_DEV
> +	select QCOM_MDT_LOADER if ARCH_QCOM
> +	select QCOM_SCM
> +	select QCOM_PAS
> +	select VIDEOBUF2_DMA_CONTIG
> +	help
> +	  This is a V4L2 driver for Qualcomm iris video accelerator
> +	  hardware. It accelerates decoding operations on various
> +	  Qualcomm SoCs.
> +	  To compile this driver as a module choose m here.
> diff --git a/drivers/media/platform/qcom/iris/iris_firmware.c b/drivers/media/platform/qcom/iris/iris_firmware.c
> index 5f408024e967..856fa6a79064 100644
> --- a/drivers/media/platform/qcom/iris/iris_firmware.c
> +++ b/drivers/media/platform/qcom/iris/iris_firmware.c
> @@ -4,6 +4,7 @@
>   */
>  
>  #include <linux/firmware.h>
> +#include <linux/firmware/qcom/qcom_pas.h>
>  #include <linux/firmware/qcom/qcom_scm.h>
>  #include <linux/of_address.h>
>  #include <linux/of_reserved_mem.h>
> @@ -79,7 +80,7 @@ int iris_fw_load(struct iris_core *core)
>  		return -ENOMEM;
>  	}
>  
> -	ret = qcom_scm_pas_auth_and_reset(core->iris_platform_data->pas_id);
> +	ret = qcom_pas_auth_and_reset(core->iris_platform_data->pas_id);
>  	if (ret)  {
>  		dev_err(core->dev, "auth and reset failed: %d\n", ret);
>  		return ret;
> @@ -93,7 +94,7 @@ int iris_fw_load(struct iris_core *core)
>  						     cp_config->cp_nonpixel_size);
>  		if (ret) {
>  			dev_err(core->dev, "qcom_scm_mem_protect_video_var failed: %d\n", ret);
> -			qcom_scm_pas_shutdown(core->iris_platform_data->pas_id);
> +			qcom_pas_shutdown(core->iris_platform_data->pas_id);
>  			return ret;
>  		}
>  	}
> @@ -103,10 +104,10 @@ int iris_fw_load(struct iris_core *core)
>  
>  int iris_fw_unload(struct iris_core *core)
>  {
> -	return qcom_scm_pas_shutdown(core->iris_platform_data->pas_id);
> +	return qcom_pas_shutdown(core->iris_platform_data->pas_id);
>  }
>  
>  int iris_set_hw_state(struct iris_core *core, bool resume)
>  {
> -	return qcom_scm_set_remote_state(resume, 0);
> +	return qcom_pas_set_remote_state(resume, core->iris_platform_data->pas_id);
>  }
> diff --git a/drivers/media/platform/qcom/venus/Kconfig b/drivers/media/platform/qcom/venus/Kconfig
> index ffb731ecd48c..574172724e8f 100644
> --- a/drivers/media/platform/qcom/venus/Kconfig
> +++ b/drivers/media/platform/qcom/venus/Kconfig
> @@ -6,6 +6,7 @@ config VIDEO_QCOM_VENUS
>  	select OF_DYNAMIC if ARCH_QCOM
>  	select QCOM_MDT_LOADER if ARCH_QCOM
>  	select QCOM_SCM
> +	select QCOM_PAS
>  	select VIDEOBUF2_DMA_CONTIG
>  	select V4L2_MEM2MEM_DEV
>  	help
> diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c
> index 1de7436713ed..3c0727ea137d 100644
> --- a/drivers/media/platform/qcom/venus/firmware.c
> +++ b/drivers/media/platform/qcom/venus/firmware.c
> @@ -12,6 +12,7 @@
>  #include <linux/of_reserved_mem.h>
>  #include <linux/platform_device.h>
>  #include <linux/of_device.h>
> +#include <linux/firmware/qcom/qcom_pas.h>
>  #include <linux/firmware/qcom/qcom_scm.h>
>  #include <linux/sizes.h>
>  #include <linux/soc/qcom/mdt_loader.h>
> @@ -58,7 +59,7 @@ int venus_set_hw_state(struct venus_core *core, bool resume)
>  	int ret;
>  
>  	if (core->use_tz) {
> -		ret = qcom_scm_set_remote_state(resume, 0);
> +		ret = qcom_pas_set_remote_state(resume, VENUS_PAS_ID);
>  		if (resume && ret == -EINVAL)
>  			ret = 0;
>  		return ret;
> @@ -218,7 +219,7 @@ int venus_boot(struct venus_core *core)
>  	int ret;
>  
>  	if (!IS_ENABLED(CONFIG_QCOM_MDT_LOADER) ||
> -	    (core->use_tz && !qcom_scm_is_available()))
> +	    (core->use_tz && !qcom_pas_is_available()))
>  		return -EPROBE_DEFER;
>  
>  	ret = of_property_read_string_index(dev->of_node, "firmware-name", 0,
> @@ -236,7 +237,7 @@ int venus_boot(struct venus_core *core)
>  	core->fw.mem_phys = mem_phys;
>  
>  	if (core->use_tz)
> -		ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID);
> +		ret = qcom_pas_auth_and_reset(VENUS_PAS_ID);
>  	else
>  		ret = venus_boot_no_tz(core, mem_phys, mem_size);
>  
> @@ -259,7 +260,7 @@ int venus_boot(struct venus_core *core)
>  						     res->cp_nonpixel_start,
>  						     res->cp_nonpixel_size);
>  		if (ret) {
> -			qcom_scm_pas_shutdown(VENUS_PAS_ID);
> +			qcom_pas_shutdown(VENUS_PAS_ID);
>  			dev_err(dev, "set virtual address ranges fail (%d)\n",
>  				ret);
>  			return ret;
> @@ -274,7 +275,7 @@ int venus_shutdown(struct venus_core *core)
>  	int ret;
>  
>  	if (core->use_tz)
> -		ret = qcom_scm_pas_shutdown(VENUS_PAS_ID);
> +		ret = qcom_pas_shutdown(VENUS_PAS_ID);
>  	else
>  		ret = venus_shutdown_no_tz(core);
>  
> -- 
> 2.51.0
> 
>