On Wed, Sep 2, 2015 at 3:32 AM, Yaniv Gardi <ygardi@xxxxxxxxxxxxxx> wrote:
> This change turns the UFS variant (SCSI_UFS_QCOM) into a UFS
> a platform device.
> In order to do so a few additional changes are required:
> 1. The ufshcd-pltfrm is no longer serves as a platform device.
> Now it only serves as a group of platform APIs such as PM APIs
> (runtime suspend/resume, system suspend/resume etc), parsers of
> clocks, regulators and pm_levels from DT.
> 2. What used to be the old platform "probe" is now "only"
> a pltfrm_init() routine, that does exactly the same, but only
> being called by the new probe function of the UFS variant.
>
> Signed-off-by: Yaniv Gardi <ygardi@xxxxxxxxxxxxxx>
[...]
> diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
> index 329ac84..5179250 100644
> --- a/drivers/scsi/ufs/ufs-qcom.c
> +++ b/drivers/scsi/ufs/ufs-qcom.c
> @@ -19,6 +19,7 @@
>
> #include <linux/phy/phy-qcom-ufs.h>
> #include "ufshcd.h"
> +#include "ufshcd-pltfrm.h"
> #include "unipro.h"
> #include "ufs-qcom.h"
> #include "ufshci.h"
> @@ -1036,7 +1037,7 @@ void ufs_qcom_clk_scale_notify(struct ufs_hba *hba)
> * The variant operations configure the necessary controller and PHY
> * handshake during initialization.
> */
> -static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
> +static struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
> .name = "qcom",
> .init = ufs_qcom_init,
> .exit = ufs_qcom_exit,
> @@ -1050,4 +1051,75 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
> .resume = ufs_qcom_resume,
> };
>
> +/**
> + * ufs_qcom_probe - probe routine of the driver
> + * @pdev: pointer to Platform device handle
> + *
> + * Always return 0
> + */
> +static int ufs_qcom_probe(struct platform_device *pdev)
> +{
> + int err;
> + struct device *dev = &pdev->dev;
> + struct ufs_hba *hba;
> +
> + /* Perform generic probe */
> + err = ufshcd_pltfrm_init(pdev, &ufs_hba_qcom_vops);
> + if (err) {
> + dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
> + goto out;
> + }
> +
All of this:
> + hba = platform_get_drvdata(pdev);
> +
> + return 0;
> +
> +dealloc_host:
> + /* disconnect the bind between the qcom host and the hba */
> + ufshcd_set_variant(hba, NULL);
> + ufshcd_dealloc_host(hba);
To this is dead code. You should get a warning that dealloc_host is
unused. Please check and fix all warnings.
Rob
> +out:
> + return err;
> +}
> +
--
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