linux-kernel - Re: [PATCH v2] mmc: sdhci-pci: add Intel Merrifield support

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Date:	Tue, 08 Oct 2013 18:17:36 -0700
From:	David Cohen <david.a.cohen@...ux.intel.com>
To:	cjb@...top.org, bhelgaas@...gle.com, adrian.hunter@...el.com,
	wfp5p@...ginia.edu, gregkh@...uxfoundation.org,
	g.liakhovetski@....de
CC:	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH v2] mmc: sdhci-pci: add Intel Merrifield support

Kindly ping :)
Any comments?

Br, David Cohen

On 10/01/2013 01:18 PM, David Cohen wrote:
> Implement initial SDHCI Intel Merrifield support.
> This patch is based on previous one from Yunpeng Gao <yunpeng.gao@...el.com>
>
> Signed-off-by: David Cohen <david.a.cohen@...ux.intel.com>
> ---
>   drivers/mmc/host/sdhci-pci.c | 30 ++++++++++++++++++++++++++++++
>   1 file changed, 30 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
> index d7d6bc8..06f026a 100644
> --- a/drivers/mmc/host/sdhci-pci.c
> +++ b/drivers/mmc/host/sdhci-pci.c
> @@ -37,6 +37,7 @@
>   #define PCI_DEVICE_ID_INTEL_BYT_SDIO	0x0f15
>   #define PCI_DEVICE_ID_INTEL_BYT_SD	0x0f16
>   #define PCI_DEVICE_ID_INTEL_BYT_EMMC2	0x0f50
> +#define PCI_DEVICE_ID_INTEL_MRFL_MMC	0x1190
>
>   /*
>    * PCI registers
> @@ -356,6 +357,28 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
>   	.allow_runtime_pm = true,
>   };
>
> +/* Define Host controllers for Intel Merrifield platform */
> +#define INTEL_MRFL_EMMC_0	0
> +#define INTEL_MRFL_EMMC_1	1
> +
> +static int intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot *slot)
> +{
> +	if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_0) &&
> +	    (PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_1))
> +		/* SD support is not ready yet */
> +		return -ENODEV;
> +
> +	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
> +				 MMC_CAP_1_8V_DDR;
> +
> +	return 0;
> +}
> +
> +static const struct sdhci_pci_fixes sdhci_intel_mrfl_mmc = {
> +	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
> +	.probe_slot	= intel_mrfl_mmc_probe_slot,
> +};
> +
>   /* O2Micro extra registers */
>   #define O2_SD_LOCK_WP		0xD3
>   #define O2_SD_MULTI_VCC3V	0xEE
> @@ -940,6 +963,13 @@ static const struct pci_device_id pci_ids[] = {
>   	},
>
>   	{
> +		.vendor		= PCI_VENDOR_ID_INTEL,
> +		.device		= PCI_DEVICE_ID_INTEL_MRFL_MMC,
> +		.subvendor	= PCI_ANY_ID,
> +		.subdevice	= PCI_ANY_ID,
> +		.driver_data	= (kernel_ulong_t)&sdhci_intel_mrfl_mmc,
> +	},
> +	{
>   		.vendor		= PCI_VENDOR_ID_O2,
>   		.device		= PCI_DEVICE_ID_O2_8120,
>   		.subvendor	= PCI_ANY_ID,
>

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