Re: [PATCH v3 2/4] drm/msm/dsi: add DSI version >= comparison helper

[Dmitry Baryshkov]

On Thu, Mar 19, 2026 at 11:57:52AM +0000, Alexander Koskovich wrote:
> Add a helper for checking if the DSI hardware version is greater
> than or equal to a given version, for use in a future change.
> 
> Signed-off-by: Alexander Koskovich <akoskovich@xxxxx>
> ---
>  drivers/gpu/drm/msm/dsi/dsi_host.c | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index db6da99375a1..6fad9a612d4d 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -782,13 +782,20 @@ static void dsi_ctrl_disable(struct msm_dsi_host *msm_host)
>  	dsi_write(msm_host, REG_DSI_CTRL, 0);
>  }
>  
> +static bool msm_dsi_host_version_ge(struct msm_dsi_host *msm_host,
> +				    u32 major, u32 minor)
> +{
> +	return msm_host->cfg_hnd->major == major &&
> +	       msm_host->cfg_hnd->minor >= minor;

I r-b'ed it, but there should be ... || msm_host->cfg_hnd->major > major.

> +}
> +
>  bool msm_dsi_host_is_wide_bus_enabled(struct mipi_dsi_host *host)
>  {
>  	struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
>  
>  	return msm_host->dsc &&
> -		(msm_host->cfg_hnd->major == MSM_DSI_VER_MAJOR_6G &&
> -		 msm_host->cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V2_5_0);
> +		msm_dsi_host_version_ge(msm_host, MSM_DSI_VER_MAJOR_6G,
> +					MSM_DSI_6G_VER_MINOR_V2_5_0);
>  }
>  
>  static void dsi_ctrl_enable(struct msm_dsi_host *msm_host,
> 
> -- 
> 2.53.0
> 
> 

-- 
With best wishes
Dmitry