linux-kernel - Re: [PATCH 3/3] mmc: sdhci_am654: Fix Command Queuing in AM65x

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Date:   Wed, 15 Jan 2020 15:15:50 +0200
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Faiz Abbas <faiz_abbas@...com>, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org
Cc:     ulf.hansson@...aro.org
Subject: Re: [PATCH 3/3] mmc: sdhci_am654: Fix Command Queuing in AM65x

On 8/01/20 4:33 pm, Faiz Abbas wrote:
> Command Queuing was enabled completely for J721e controllers which lead
> to partial enablement even for Am65x. Complete CQ implementation for
> AM65x by adding the irq callback.
> 
> Fixes: f545702b74f9 ("mmc: sdhci_am654: Add Support for Command Queuing Engine to J721E")
> Cc: stable@...r.kernel.org
> Signed-off-by: Faiz Abbas <faiz_abbas@...com>

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

> ---
>  drivers/mmc/host/sdhci_am654.c | 27 ++++++++++++++-------------
>  1 file changed, 14 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
> index 59c0c41b3739..b8fe94fd9525 100644
> --- a/drivers/mmc/host/sdhci_am654.c
> +++ b/drivers/mmc/host/sdhci_am654.c
> @@ -256,6 +256,19 @@ static int sdhci_am654_execute_tuning(struct mmc_host *mmc, u32 opcode)
>  	return 0;
>  }
>  
> +static u32 sdhci_am654_cqhci_irq(struct sdhci_host *host, u32 intmask)
> +{
> +	int cmd_error = 0;
> +	int data_error = 0;
> +
> +	if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
> +		return intmask;
> +
> +	cqhci_irq(host->mmc, intmask, cmd_error, data_error);
> +
> +	return 0;
> +}
> +
>  static struct sdhci_ops sdhci_am654_ops = {
>  	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
>  	.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
> @@ -264,6 +277,7 @@ static struct sdhci_ops sdhci_am654_ops = {
>  	.set_power = sdhci_am654_set_power,
>  	.set_clock = sdhci_am654_set_clock,
>  	.write_b = sdhci_am654_write_b,
> +	.irq = sdhci_am654_cqhci_irq,
>  	.reset = sdhci_reset,
>  };
>  
> @@ -278,19 +292,6 @@ static const struct sdhci_am654_driver_data sdhci_am654_drvdata = {
>  	.flags = IOMUX_PRESENT | FREQSEL_2_BIT | STRBSEL_4_BIT | DLL_PRESENT,
>  };
>  
> -static u32 sdhci_am654_cqhci_irq(struct sdhci_host *host, u32 intmask)
> -{
> -	int cmd_error = 0;
> -	int data_error = 0;
> -
> -	if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
> -		return intmask;
> -
> -	cqhci_irq(host->mmc, intmask, cmd_error, data_error);
> -
> -	return 0;
> -}
> -
>  static struct sdhci_ops sdhci_j721e_8bit_ops = {
>  	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
>  	.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
>