Re: [PATCH V2 1/3] mmc: mmci: Put power register deviations in variant data

[Ulf Hansson <ulf.hansson@xxxxxxxxxxxxxx>]

Is this patch and it's patchserie considered OK?

-Russell, patches are available in your patchtracker.

Br
Ulf Hansson

Ulf HANSSON wrote:
> From: Sebastian Rasmussen <sebastian.rasmussen@xxxxxxxxxxxxxx>
>
> Use variant data to store hardware controller deviations concerning
> power registers to improve readability of the code.
>
> Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@xxxxxxxxxxxxxx>
> Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxxxxxx>
> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxxxxxx>
> ---
>  drivers/mmc/host/mmci.c |   22 +++++++++++++++++-----
>  1 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
> index 50b5f99..1296719 100644
> --- a/drivers/mmc/host/mmci.c
> +++ b/drivers/mmc/host/mmci.c
> @@ -53,6 +53,7 @@ static unsigned int fmax = 515633;
>   * @sdio: variant supports SDIO
>   * @st_clkdiv: true if using a ST-specific clock divider algorithm
>   * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
> + * @pwrreg_powerup: power up value for MMCIPOWER register
>   */
>  struct variant_data {
>  	unsigned int		clkreg;
> @@ -63,18 +64,21 @@ struct variant_data {
>  	bool			sdio;
>  	bool			st_clkdiv;
>  	bool			blksz_datactrl16;
> +	u32			pwrreg_powerup;
>  };
>  
>  static struct variant_data variant_arm = {
>  	.fifosize		= 16 * 4,
>  	.fifohalfsize		= 8 * 4,
>  	.datalength_bits	= 16,
> +	.pwrreg_powerup		= MCI_PWR_UP,
>  };
>  
>  static struct variant_data variant_arm_extended_fifo = {
>  	.fifosize		= 128 * 4,
>  	.fifohalfsize		= 64 * 4,
>  	.datalength_bits	= 16,
> +	.pwrreg_powerup		= MCI_PWR_UP,
>  };
>  
>  static struct variant_data variant_u300 = {
> @@ -83,6 +87,7 @@ static struct variant_data variant_u300 = {
>  	.clkreg_enable		= MCI_ST_U300_HWFCEN,
>  	.datalength_bits	= 16,
>  	.sdio			= true,
> +	.pwrreg_powerup		= MCI_PWR_ON,
>  };
>  
>  static struct variant_data variant_ux500 = {
> @@ -93,6 +98,7 @@ static struct variant_data variant_ux500 = {
>  	.datalength_bits	= 24,
>  	.sdio			= true,
>  	.st_clkdiv		= true,
> +	.pwrreg_powerup		= MCI_PWR_ON,
>  };
>  
>  static struct variant_data variant_ux500v2 = {
> @@ -104,6 +110,7 @@ static struct variant_data variant_ux500v2 = {
>  	.sdio			= true,
>  	.st_clkdiv		= true,
>  	.blksz_datactrl16	= true,
> +	.pwrreg_powerup		= MCI_PWR_ON,
>  };
>  
>  /*
> @@ -1006,6 +1013,7 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
>  static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
>  {
>  	struct mmci_host *host = mmc_priv(mmc);
> +	struct variant_data *variant = host->variant;
>  	u32 pwr = 0;
>  	unsigned long flags;
>  	int ret;
> @@ -1032,11 +1040,15 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
>  		if (host->plat->vdd_handler)
>  			pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd,
>  						       ios->power_mode);
> -		/* The ST version does not have this, fall through to POWER_ON */
> -		if (host->hw_designer != AMBA_VENDOR_ST) {
> -			pwr |= MCI_PWR_UP;
> -			break;
> -		}
> +
> +		/*
> +		 * The ST Micro variant doesn't have the PL180s MCI_PWR_UP
> +		 * and instead uses MCI_PWR_ON so apply whatever value is
> +		 * configured in the variant data.
> +		 */
> +		pwr |= variant->pwrreg_powerup;
> +
> +		break;
>  	case MMC_POWER_ON:
>  		pwr |= MCI_PWR_ON;
>  		break;

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