linux-kernel - Re: [PATCH v3] mmc: sdhci-of-dwcmshc: add ACPI match data for BlueField-3 SoC

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Message-ID: <765c3b77-9573-d48f-39a9-c311a62542ec@intel.com>
Date:   Wed, 10 Aug 2022 15:58:38 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Liming Sun <limings@...dia.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        David Woods <davwoods@...dia.com>,
        Shawn Lin <shawn.lin@...k-chips.com>
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] mmc: sdhci-of-dwcmshc: add ACPI match data for
 BlueField-3 SoC

On 9/08/22 20:37, Liming Sun wrote:
> Commit 08f3dff799d43 introduces the of_device_get_match_data()
> checking for some chip but breaks the BlueField-3 firmware which
> uses ACPI instead. This commit adds the ACPI match data and
> quirks/quirks2 to re-enable the support of BlueField-3 SoC.
> 
> Reviewed-by: David Woods <davwoods@...dia.com>
> Signed-off-by: Liming Sun <limings@...dia.com>

Acked-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
> v2->v3:
>     Rebase to mmc next
> v1->v2:
>     Fixes an acpi warning
>     Reported-by: kernel test robot <lkp@...el.com>
> v1: Initial version.
> ---
>  drivers/mmc/host/sdhci-of-dwcmshc.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
> index 4e904850973c..a7343d4bc50e 100644
> --- a/drivers/mmc/host/sdhci-of-dwcmshc.c
> +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
> @@ -349,6 +349,15 @@ static const struct sdhci_pltfm_data sdhci_dwcmshc_pdata = {
>  	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
>  };
>  
> +#ifdef CONFIG_ACPI
> +static const struct sdhci_pltfm_data sdhci_dwcmshc_bf3_pdata = {
> +	.ops = &sdhci_dwcmshc_ops,
> +	.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
> +	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
> +		   SDHCI_QUIRK2_ACMD23_BROKEN,
> +};
> +#endif
> +
>  static const struct sdhci_pltfm_data sdhci_dwcmshc_rk35xx_pdata = {
>  	.ops = &sdhci_dwcmshc_rk35xx_ops,
>  	.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
> @@ -431,7 +440,10 @@ MODULE_DEVICE_TABLE(of, sdhci_dwcmshc_dt_ids);
>  
>  #ifdef CONFIG_ACPI
>  static const struct acpi_device_id sdhci_dwcmshc_acpi_ids[] = {
> -	{ .id = "MLNXBF30" },
> +	{
> +		.id = "MLNXBF30",
> +		.driver_data = (kernel_ulong_t)&sdhci_dwcmshc_bf3_pdata,
> +	},
>  	{}
>  };
>  #endif
> @@ -447,7 +459,7 @@ static int dwcmshc_probe(struct platform_device *pdev)
>  	int err;
>  	u32 extra;
>  
> -	pltfm_data = of_device_get_match_data(&pdev->dev);
> +	pltfm_data = device_get_match_data(&pdev->dev);
>  	if (!pltfm_data) {
>  		dev_err(&pdev->dev, "Error: No device match data found\n");
>  		return -ENODEV;