diff options
Diffstat (limited to 'drivers/scsi/ufs/ufs-mediatek.c')
| -rw-r--r-- | drivers/scsi/ufs/ufs-mediatek.c | 64 |
1 files changed, 57 insertions, 7 deletions
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index a981f261b304..d2c251628a05 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -603,11 +603,23 @@ static void ufs_mtk_get_controller_version(struct ufs_hba *hba) ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_LOCALVERINFO), &ver); if (!ret) { - if (ver >= UFS_UNIPRO_VER_1_8) + if (ver >= UFS_UNIPRO_VER_1_8) { host->hw_ver.major = 3; + /* + * Fix HCI version for some platforms with + * incorrect version + */ + if (hba->ufs_version < ufshci_version(3, 0)) + hba->ufs_version = ufshci_version(3, 0); + } } } +static u32 ufs_mtk_get_ufs_hci_version(struct ufs_hba *hba) +{ + return hba->ufs_version; +} + /** * ufs_mtk_init - find other essential mmio bases * @hba: host controller instance @@ -810,12 +822,10 @@ static int ufs_mtk_post_link(struct ufs_hba *hba) /* enable unipro clock gating feature */ ufs_mtk_cfg_unipro_cg(hba, true); - /* configure auto-hibern8 timer to 10ms */ - if (ufshcd_is_auto_hibern8_supported(hba)) { - ufshcd_auto_hibern8_update(hba, - FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 10) | - FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3)); - } + /* will be configured during probe hba */ + if (ufshcd_is_auto_hibern8_supported(hba)) + hba->ahit = FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 10) | + FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3); ufs_mtk_setup_clk_gating(hba); @@ -846,6 +856,9 @@ static int ufs_mtk_device_reset(struct ufs_hba *hba) { struct arm_smccc_res res; + /* disable hba before device reset */ + ufshcd_hba_stop(hba); + ufs_mtk_device_reset_ctrl(0, res); /* @@ -922,6 +935,7 @@ static void ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm) static int ufs_mtk_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) { int err; + struct arm_smccc_res res; if (ufshcd_is_link_hibern8(hba)) { err = ufs_mtk_link_set_lpm(hba); @@ -941,6 +955,9 @@ static int ufs_mtk_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) goto fail; } + if (ufshcd_is_link_off(hba)) + ufs_mtk_device_reset_ctrl(0, res); + return 0; fail: /* @@ -1044,6 +1061,7 @@ static void ufs_mtk_event_notify(struct ufs_hba *hba, static const struct ufs_hba_variant_ops ufs_hba_mtk_vops = { .name = "mediatek.ufshci", .init = ufs_mtk_init, + .get_ufs_hci_version = ufs_mtk_get_ufs_hci_version, .setup_clocks = ufs_mtk_setup_clocks, .hce_enable_notify = ufs_mtk_hce_enable_notify, .link_startup_notify = ufs_mtk_link_startup_notify, @@ -1067,12 +1085,42 @@ static int ufs_mtk_probe(struct platform_device *pdev) { int err; struct device *dev = &pdev->dev; + struct device_node *reset_node; + struct platform_device *reset_pdev; + struct device_link *link; + + reset_node = of_find_compatible_node(NULL, NULL, + "ti,syscon-reset"); + if (!reset_node) { + dev_notice(dev, "find ti,syscon-reset fail\n"); + goto skip_reset; + } + reset_pdev = of_find_device_by_node(reset_node); + if (!reset_pdev) { + dev_notice(dev, "find reset_pdev fail\n"); + goto skip_reset; + } + link = device_link_add(dev, &reset_pdev->dev, + DL_FLAG_AUTOPROBE_CONSUMER); + if (!link) { + dev_notice(dev, "add reset device_link fail\n"); + goto skip_reset; + } + /* supplier is not probed */ + if (link->status == DL_STATE_DORMANT) { + err = -EPROBE_DEFER; + goto out; + } +skip_reset: /* perform generic probe */ err = ufshcd_pltfrm_init(pdev, &ufs_hba_mtk_vops); + +out: if (err) dev_info(dev, "probe failed %d\n", err); + of_node_put(reset_node); return err; } @@ -1097,6 +1145,8 @@ static const struct dev_pm_ops ufs_mtk_pm_ops = { .runtime_suspend = ufshcd_pltfrm_runtime_suspend, .runtime_resume = ufshcd_pltfrm_runtime_resume, .runtime_idle = ufshcd_pltfrm_runtime_idle, + .prepare = ufshcd_suspend_prepare, + .complete = ufshcd_resume_complete, }; static struct platform_driver ufs_mtk_pltform = { |