Re: [PATCH 17/32] drm/i915/xe3p_lpd: Load DMC firmware

[Matt Atwood <matthew.s.atwood@intel.com>]

On Wed, Oct 15, 2025 at 12:15:17AM -0300, Gustavo Sousa wrote:
> Load the DMC firmware for Xe3p_LPD.
> 
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
> Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_dmc.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
> index 517bebb0b4aa..c496e7a5c003 100644
> --- a/drivers/gpu/drm/i915/display/intel_dmc.c
> +++ b/drivers/gpu/drm/i915/display/intel_dmc.c
> @@ -127,6 +127,9 @@ static bool dmc_firmware_param_disabled(struct intel_display *display)
>  #define DISPLAY_VER13_DMC_MAX_FW_SIZE	0x20000
>  #define DISPLAY_VER12_DMC_MAX_FW_SIZE	ICL_DMC_MAX_FW_SIZE
>  
> +#define XE3P_LPD_DMC_PATH		DMC_PATH(xe3p_lpd)
> +MODULE_FIRMWARE(XE3P_LPD_DMC_PATH);
> +
>  #define XE3LPD_DMC_PATH			DMC_PATH(xe3lpd)
>  MODULE_FIRMWARE(XE3LPD_DMC_PATH);
>  
> @@ -184,7 +187,10 @@ static const char *dmc_firmware_default(struct intel_display *display, u32 *size
>  	const char *fw_path = NULL;
>  	u32 max_fw_size = 0;
>  
> -	if (DISPLAY_VERx100(display) == 3002 ||
> +	if (DISPLAY_VERx100(display) == 3500) {
> +		fw_path = XE3P_LPD_DMC_PATH;
> +		max_fw_size = XE2LPD_DMC_MAX_FW_SIZE;
> +	} else if (DISPLAY_VERx100(display) == 3002 ||
>  	    DISPLAY_VERx100(display) == 3000) {
>  		fw_path = XE3LPD_DMC_PATH;
>  		max_fw_size = XE2LPD_DMC_MAX_FW_SIZE;
> 
> -- 
> 2.51.0
>