diff options
Diffstat (limited to 'drivers/scsi/ufs/ufs-mediatek.c')
-rw-r--r-- | drivers/scsi/ufs/ufs-mediatek.c | 265 |
1 files changed, 188 insertions, 77 deletions
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index 8df73bc2f8cb..3522458db3bb 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -24,10 +24,16 @@ #include "unipro.h" #include "ufs-mediatek.h" +#define CREATE_TRACE_POINTS +#include "ufs-mediatek-trace.h" + #define ufs_mtk_smc(cmd, val, res) \ arm_smccc_smc(MTK_SIP_UFS_CONTROL, \ cmd, val, 0, 0, 0, 0, 0, &(res)) +#define ufs_mtk_va09_pwr_ctrl(res, on) \ + ufs_mtk_smc(UFS_MTK_SIP_VA09_PWR_CTRL, on, res) + #define ufs_mtk_crypto_ctrl(res, enable) \ ufs_mtk_smc(UFS_MTK_SIP_CRYPTO_CTRL, enable, res) @@ -45,18 +51,8 @@ static struct ufs_dev_fix ufs_mtk_dev_fixups[] = { END_FIX }; -static const struct ufs_mtk_host_cfg ufs_mtk_mt8192_cfg = { - .caps = UFS_MTK_CAP_BOOST_CRYPT_ENGINE, -}; - static const struct of_device_id ufs_mtk_of_match[] = { - { - .compatible = "mediatek,mt8183-ufshci", - }, - { - .compatible = "mediatek,mt8192-ufshci", - .data = &ufs_mtk_mt8192_cfg - }, + { .compatible = "mediatek,mt8183-ufshci" }, {}, }; @@ -64,7 +60,14 @@ static bool ufs_mtk_is_boost_crypt_enabled(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); - return (host->caps & UFS_MTK_CAP_BOOST_CRYPT_ENGINE); + return !!(host->caps & UFS_MTK_CAP_BOOST_CRYPT_ENGINE); +} + +static bool ufs_mtk_is_va09_supported(struct ufs_hba *hba) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + return !!(host->caps & UFS_MTK_CAP_VA09_PWR_CTRL); } static void ufs_mtk_cfg_unipro_cg(struct ufs_hba *hba, bool enable) @@ -158,6 +161,7 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba, enum ufs_notify_change_status status) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); + unsigned long flags; if (status == PRE_CHANGE) { if (host->unipro_lpm) { @@ -169,6 +173,17 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba, if (hba->caps & UFSHCD_CAP_CRYPTO) ufs_mtk_crypto_enable(hba); + + if (host->caps & UFS_MTK_CAP_DISABLE_AH8) { + spin_lock_irqsave(hba->host->host_lock, flags); + ufshcd_writel(hba, 0, + REG_AUTO_HIBERNATE_IDLE_TIMER); + spin_unlock_irqrestore(hba->host->host_lock, + flags); + + hba->capabilities &= ~MASK_AUTO_HIBERN8_SUPPORT; + hba->ahit = 0; + } } return 0; @@ -300,21 +315,46 @@ static int ufs_mtk_wait_link_state(struct ufs_hba *hba, u32 state, return -ETIMEDOUT; } -static void ufs_mtk_mphy_power_on(struct ufs_hba *hba, bool on) +static int ufs_mtk_mphy_power_on(struct ufs_hba *hba, bool on) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); struct phy *mphy = host->mphy; + struct arm_smccc_res res; + int ret = 0; - if (!mphy) - return; + if (!mphy || !(on ^ host->mphy_powered_on)) + return 0; - if (on && !host->mphy_powered_on) + if (on) { + if (ufs_mtk_is_va09_supported(hba)) { + ret = regulator_enable(host->reg_va09); + if (ret < 0) + goto out; + /* wait 200 us to stablize VA09 */ + usleep_range(200, 210); + ufs_mtk_va09_pwr_ctrl(res, 1); + } phy_power_on(mphy); - else if (!on && host->mphy_powered_on) + } else { phy_power_off(mphy); - else - return; - host->mphy_powered_on = on; + if (ufs_mtk_is_va09_supported(hba)) { + ufs_mtk_va09_pwr_ctrl(res, 0); + ret = regulator_disable(host->reg_va09); + if (ret < 0) + goto out; + } + } +out: + if (ret) { + dev_info(hba->dev, + "failed to %s va09: %d\n", + on ? "enable" : "disable", + ret); + } else { + host->mphy_powered_on = on; + } + + return ret; } static int ufs_mtk_get_host_clk(struct device *dev, const char *name, @@ -402,7 +442,7 @@ static int ufs_mtk_init_host_clk(struct ufs_hba *hba, const char *name, return ret; } -static void ufs_mtk_init_host_caps(struct ufs_hba *hba) +static void ufs_mtk_init_boost_crypt(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); struct ufs_mtk_crypt_cfg *cfg; @@ -410,11 +450,6 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) struct regulator *reg; u32 volt; - host->caps = host->cfg->caps; - - if (!ufs_mtk_is_boost_crypt_enabled(hba)) - return; - host->crypt = devm_kzalloc(dev, sizeof(*(host->crypt)), GFP_KERNEL); if (!host->crypt) @@ -448,11 +483,51 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) cfg->reg_vcore = reg; cfg->vcore_volt = volt; - dev_info(dev, "caps: boost-crypt"); - return; + host->caps |= UFS_MTK_CAP_BOOST_CRYPT_ENGINE; disable_caps: - host->caps &= ~UFS_MTK_CAP_BOOST_CRYPT_ENGINE; + return; +} + +static void ufs_mtk_init_va09_pwr_ctrl(struct ufs_hba *hba) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + host->reg_va09 = regulator_get(hba->dev, "va09"); + if (!host->reg_va09) + dev_info(hba->dev, "failed to get va09"); + else + host->caps |= UFS_MTK_CAP_VA09_PWR_CTRL; +} + +static void ufs_mtk_init_host_caps(struct ufs_hba *hba) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + struct device_node *np = hba->dev->of_node; + + if (of_property_read_bool(np, "mediatek,ufs-boost-crypt")) + ufs_mtk_init_boost_crypt(hba); + + if (of_property_read_bool(np, "mediatek,ufs-support-va09")) + ufs_mtk_init_va09_pwr_ctrl(hba); + + if (of_property_read_bool(np, "mediatek,ufs-disable-ah8")) + host->caps |= UFS_MTK_CAP_DISABLE_AH8; + + dev_info(hba->dev, "caps: 0x%x", host->caps); +} + +static void ufs_mtk_scale_perf(struct ufs_hba *hba, bool up) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + ufs_mtk_boost_crypt(hba, up); + ufs_mtk_setup_ref_clk(hba, up); + + if (up) + phy_power_on(host->mphy); + else + phy_power_off(host->mphy); } /** @@ -467,8 +542,8 @@ static int ufs_mtk_setup_clocks(struct ufs_hba *hba, bool on, enum ufs_notify_change_status status) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); - int ret = 0; bool clk_pwr_off = false; + int ret = 0; /* * In case ufs_mtk_init() is not yet done, simply ignore. @@ -496,20 +571,33 @@ static int ufs_mtk_setup_clocks(struct ufs_hba *hba, bool on, clk_pwr_off = true; } - if (clk_pwr_off) { - ufs_mtk_boost_crypt(hba, on); - ufs_mtk_setup_ref_clk(hba, on); - ufs_mtk_mphy_power_on(hba, on); - } + if (clk_pwr_off) + ufs_mtk_scale_perf(hba, false); } else if (on && status == POST_CHANGE) { - ufs_mtk_mphy_power_on(hba, on); - ufs_mtk_setup_ref_clk(hba, on); - ufs_mtk_boost_crypt(hba, on); + ufs_mtk_scale_perf(hba, true); } return ret; } +static void ufs_mtk_get_controller_version(struct ufs_hba *hba) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + int ret, ver = 0; + + if (host->hw_ver.major) + return; + + /* Set default (minimum) version anyway */ + host->hw_ver.major = 2; + + ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_LOCALVERINFO), &ver); + if (!ret) { + if (ver >= UFS_UNIPRO_VER_1_8) + host->hw_ver.major = 3; + } +} + /** * ufs_mtk_init - find other essential mmio bases * @hba: host controller instance @@ -537,17 +625,14 @@ static int ufs_mtk_init(struct ufs_hba *hba) host->hba = hba; ufshcd_set_variant(hba, host); - /* Get host capability and platform data */ id = of_match_device(ufs_mtk_of_match, dev); if (!id) { err = -EINVAL; goto out; } - if (id->data) { - host->cfg = (struct ufs_mtk_host_cfg *)id->data; - ufs_mtk_init_host_caps(hba); - } + /* Initialize host capability */ + ufs_mtk_init_host_caps(hba); err = ufs_mtk_bind_mphy(hba); if (err) @@ -568,6 +653,9 @@ static int ufs_mtk_init(struct ufs_hba *hba) hba->caps |= UFSHCD_CAP_WB_EN; hba->vps->wb_flush_threshold = UFS_WB_BUF_REMAIN_PERCENT(80); + if (host->caps & UFS_MTK_CAP_DISABLE_AH8) + hba->caps |= UFSHCD_CAP_HIBERN8_WITH_CLK_GATING; + /* * ufshcd_vops_init() is invoked after * ufshcd_setup_clock(true) in ufshcd_hba_init() thus @@ -575,6 +663,7 @@ static int ufs_mtk_init(struct ufs_hba *hba) * * Enable phy clocks specifically here. */ + ufs_mtk_mphy_power_on(hba, true); ufs_mtk_setup_clocks(hba, true, POST_CHANGE); goto out; @@ -589,22 +678,13 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba, struct ufs_pa_layer_attr *dev_max_params, struct ufs_pa_layer_attr *dev_req_params) { + struct ufs_mtk_host *host = ufshcd_get_variant(hba); struct ufs_dev_params host_cap; int ret; - host_cap.tx_lanes = UFS_MTK_LIMIT_NUM_LANES_TX; - host_cap.rx_lanes = UFS_MTK_LIMIT_NUM_LANES_RX; - host_cap.hs_rx_gear = UFS_MTK_LIMIT_HSGEAR_RX; - host_cap.hs_tx_gear = UFS_MTK_LIMIT_HSGEAR_TX; - host_cap.pwm_rx_gear = UFS_MTK_LIMIT_PWMGEAR_RX; - host_cap.pwm_tx_gear = UFS_MTK_LIMIT_PWMGEAR_TX; - host_cap.rx_pwr_pwm = UFS_MTK_LIMIT_RX_PWR_PWM; - host_cap.tx_pwr_pwm = UFS_MTK_LIMIT_TX_PWR_PWM; - host_cap.rx_pwr_hs = UFS_MTK_LIMIT_RX_PWR_HS; - host_cap.tx_pwr_hs = UFS_MTK_LIMIT_TX_PWR_HS; - host_cap.hs_rate = UFS_MTK_LIMIT_HS_RATE; - host_cap.desired_working_mode = - UFS_MTK_LIMIT_DESIRED_MODE; + ufshcd_init_pwr_dev_param(&host_cap); + host_cap.hs_rx_gear = UFS_HS_G4; + host_cap.hs_tx_gear = UFS_HS_G4; ret = ufshcd_get_pwr_dev_param(&host_cap, dev_max_params, @@ -614,6 +694,12 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba, __func__); } + if (host->hw_ver.major >= 3) { + ret = ufshcd_dme_configure_adapt(hba, + dev_req_params->gear_tx, + PA_INITIAL_ADAPT); + } + return ret; } @@ -639,14 +725,14 @@ static int ufs_mtk_pwr_change_notify(struct ufs_hba *hba, return ret; } -static int ufs_mtk_unipro_set_pm(struct ufs_hba *hba, bool lpm) +static int ufs_mtk_unipro_set_lpm(struct ufs_hba *hba, bool lpm) { int ret; struct ufs_mtk_host *host = ufshcd_get_variant(hba); ret = ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0), - lpm); + lpm ? 1 : 0); if (!ret || !lpm) { /* * Forcibly set as non-LPM mode if UIC commands is failed @@ -664,7 +750,9 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba) int ret; u32 tmp; - ret = ufs_mtk_unipro_set_pm(hba, false); + ufs_mtk_get_controller_version(hba); + + ret = ufs_mtk_unipro_set_lpm(hba, false); if (ret) return ret; @@ -743,7 +831,7 @@ static int ufs_mtk_link_startup_notify(struct ufs_hba *hba, return ret; } -static void ufs_mtk_device_reset(struct ufs_hba *hba) +static int ufs_mtk_device_reset(struct ufs_hba *hba) { struct arm_smccc_res res; @@ -764,6 +852,8 @@ static void ufs_mtk_device_reset(struct ufs_hba *hba) usleep_range(10000, 15000); dev_info(hba->dev, "device reset done\n"); + + return 0; } static int ufs_mtk_link_set_hpm(struct ufs_hba *hba) @@ -774,7 +864,7 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba) if (err) return err; - err = ufs_mtk_unipro_set_pm(hba, false); + err = ufs_mtk_unipro_set_lpm(hba, false); if (err) return err; @@ -795,10 +885,10 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba) { int err; - err = ufs_mtk_unipro_set_pm(hba, true); + err = ufs_mtk_unipro_set_lpm(hba, true); if (err) { /* Resume UniPro state for following error recovery */ - ufs_mtk_unipro_set_pm(hba, false); + ufs_mtk_unipro_set_lpm(hba, false); return err; } @@ -824,40 +914,52 @@ static int ufs_mtk_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) if (ufshcd_is_link_hibern8(hba)) { err = ufs_mtk_link_set_lpm(hba); - if (err) { - /* - * Set link as off state enforcedly to trigger - * ufshcd_host_reset_and_restore() in ufshcd_suspend() - * for completed host reset. - */ - ufshcd_set_link_off(hba); - return -EAGAIN; - } + if (err) + goto fail; + } + + if (!ufshcd_is_link_active(hba)) { /* * Make sure no error will be returned to prevent * ufshcd_suspend() re-enabling regulators while vreg is still * in low-power mode. */ ufs_mtk_vreg_set_lpm(hba, true); + err = ufs_mtk_mphy_power_on(hba, false); + if (err) + goto fail; } return 0; +fail: + /* + * Set link as off state enforcedly to trigger + * ufshcd_host_reset_and_restore() in ufshcd_suspend() + * for completed host reset. + */ + ufshcd_set_link_off(hba); + return -EAGAIN; } static int ufs_mtk_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) { int err; + err = ufs_mtk_mphy_power_on(hba, true); + if (err) + goto fail; + + ufs_mtk_vreg_set_lpm(hba, false); + if (ufshcd_is_link_hibern8(hba)) { - ufs_mtk_vreg_set_lpm(hba, false); err = ufs_mtk_link_set_hpm(hba); - if (err) { - err = ufshcd_link_recovery(hba); - return err; - } + if (err) + goto fail; } return 0; +fail: + return ufshcd_link_recovery(hba); } static void ufs_mtk_dbg_register_dump(struct ufs_hba *hba) @@ -903,6 +1005,14 @@ static void ufs_mtk_fixup_dev_quirks(struct ufs_hba *hba) ufshcd_fixup_dev_quirks(hba, ufs_mtk_dev_fixups); } +static void ufs_mtk_event_notify(struct ufs_hba *hba, + enum ufs_event_type evt, void *data) +{ + unsigned int val = *(u32 *)data; + + trace_ufs_mtk_event(evt, val); +} + /* * struct ufs_hba_mtk_vops - UFS MTK specific variant operations * @@ -922,6 +1032,7 @@ static const struct ufs_hba_variant_ops ufs_hba_mtk_vops = { .resume = ufs_mtk_resume, .dbg_register_dump = ufs_mtk_dbg_register_dump, .device_reset = ufs_mtk_device_reset, + .event_notify = ufs_mtk_event_notify, }; /** |