linux-kernel - Re: [PATCH] soundwire: add lane field in sdw_port

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Message-ID: <ZsGg4c7Nc0jiyGgK@vaman>
Date: Sun, 18 Aug 2024 12:51:05 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Bard Liao <yung-chuan.liao@...ux.intel.com>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
	pierre-louis.bossart@...ux.intel.com, bard.liao@...el.com
Subject: Re: [PATCH] soundwire: add lane field in sdw_port_runtime

On 06-08-24, 14:09, Bard Liao wrote:
> Currently, lane_ctrl is always 0. Add a lane field in sdw_port_runtime
> to indicate the data lane of the data port.
> They are 0 by default.

Use of the lane? also missing setting of lane variable, dont see in this
patch so we are passing garbage? It might work as structure is kzalloced
but I dont think we should be implicit, programming makes sense


> 
> Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
> ---
>  drivers/soundwire/amd_manager.c                  | 2 +-
>  drivers/soundwire/bus.h                          | 2 ++
>  drivers/soundwire/generic_bandwidth_allocation.c | 4 ++--
>  3 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/soundwire/amd_manager.c b/drivers/soundwire/amd_manager.c
> index 0d01849c3586..babb580f3124 100644
> --- a/drivers/soundwire/amd_manager.c
> +++ b/drivers/soundwire/amd_manager.c
> @@ -410,7 +410,7 @@ static int amd_sdw_compute_params(struct sdw_bus *bus)
>  			sdw_fill_xport_params(&p_rt->transport_params, p_rt->num,
>  					      false, SDW_BLK_GRP_CNT_1, sample_int,
>  					      port_bo, port_bo >> 8, hstart, hstop,
> -					      SDW_BLK_PKG_PER_PORT, 0x0);
> +					      SDW_BLK_PKG_PER_PORT, p_rt->lane);
>  
>  			sdw_fill_port_params(&p_rt->port_params,
>  					     p_rt->num, bps,
> diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h
> index fda6b24ac2da..ff03b97f1d8b 100644
> --- a/drivers/soundwire/bus.h
> +++ b/drivers/soundwire/bus.h
> @@ -90,6 +90,7 @@ int sdw_find_col_index(int col);
>   * @transport_params: Transport parameters
>   * @port_params: Port parameters
>   * @port_node: List node for Master or Slave port_list
> + * @lane: Which lane is used
>   *
>   * SoundWire spec has no mention of ports for Master interface but the
>   * concept is logically extended.
> @@ -100,6 +101,7 @@ struct sdw_port_runtime {
>  	struct sdw_transport_params transport_params;
>  	struct sdw_port_params port_params;
>  	struct list_head port_node;
> +	unsigned int lane;
>  };
>  
>  /**
> diff --git a/drivers/soundwire/generic_bandwidth_allocation.c b/drivers/soundwire/generic_bandwidth_allocation.c
> index b9316207c3ab..abf9b85daa52 100644
> --- a/drivers/soundwire/generic_bandwidth_allocation.c
> +++ b/drivers/soundwire/generic_bandwidth_allocation.c
> @@ -56,7 +56,7 @@ void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt,
>  					      sample_int, port_bo, port_bo >> 8,
>  					      t_data->hstart,
>  					      t_data->hstop,
> -					      SDW_BLK_PKG_PER_PORT, 0x0);
> +					      SDW_BLK_PKG_PER_PORT, p_rt->lane);
>  
>  			sdw_fill_port_params(&p_rt->port_params,
>  					     p_rt->num, bps,
> @@ -109,7 +109,7 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,
>  		sdw_fill_xport_params(&p_rt->transport_params, p_rt->num,
>  				      false, SDW_BLK_GRP_CNT_1, sample_int,
>  				      *port_bo, (*port_bo) >> 8, hstart, hstop,
> -				      SDW_BLK_PKG_PER_PORT, 0x0);
> +				      SDW_BLK_PKG_PER_PORT, p_rt->lane);
>  
>  		sdw_fill_port_params(&p_rt->port_params,
>  				     p_rt->num, bps,
> -- 
> 2.43.0

-- 
~Vinod