linux-kernel - RE: [PATCH v3 4/5] scsi: ufs-exynos: add UFS host support for Exynos SoCs

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Message-ID: <SN6PR04MB46404847C78F62BA2D5CD2A0FCF30@SN6PR04MB4640.namprd04.prod.outlook.com>
Date:   Sun, 22 Mar 2020 12:24:17 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Alim Akhtar <alim.akhtar@...sung.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
CC:     "krzk@...nel.org" <krzk@...nel.org>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "kwmad.kim@...sung.com" <kwmad.kim@...sung.com>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 4/5] scsi: ufs-exynos: add UFS host support for Exynos
 SoCs

> +static int exynos7_ufs_pre_link(struct exynos_ufs *ufs)
> +{
> +       struct ufs_hba *hba = ufs->hba;
> +       u32 val = ufs->drv_data->uic_attr->pa_dbg_option_suite;
Can pa_dbg_option_suite be replaced by a macro?

> +       exynos_ufs_disable_ov_tm(hba);
> +
> +       ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE_DYN),
> 0xf);
> +       ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE_DYN),
> 0xf);
A typo? Set PA_DBG_OPTION_SUITE_DYN twice? 

> +#define PWR_MODE_STR_LEN       64
> +static int exynos_ufs_post_pwr_mode(struct ufs_hba *hba,
> +                               struct ufs_pa_layer_attr *pwr_max,
> +                               struct ufs_pa_layer_attr *pwr_req)
> +{
> +       struct exynos_ufs *ufs = ufshcd_get_variant(hba);
> +       struct phy *generic_phy = ufs->phy;
> +       struct uic_pwr_mode *pwr = &ufs->pwr_act;
> +       char pwr_str[PWR_MODE_STR_LEN] = "";
Un-needed complication IMO - all those snprintf that is. 

> +
> +static void exynos_ufs_fit_aggr_timeout(struct exynos_ufs *ufs)
> +{
> +       const u8 cntr_div = 40;
Can be replaced by a macro?

> +struct exynos_ufs_drv_data exynos_ufs_drvs = {
> +
> +       .compatible             = "samsung,exynos7-ufs",
> +       .uic_attr               = &exynos7_uic_attr,
> +       .quirks                 = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
> +                                 UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR |
> +                                 UFSHCI_QUIRK_BROKEN_HCE |
> +                                 UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR,
> +       .opts                   = EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL |
> +                                 EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
> +                                 EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
In what way opts are different from quirks?


Thanks,
Avri