static struct ufs_qcom_host *ufs_qcom_hosts[MAX_UFS_QCOM_HOSTS];
-static void ufs_qcom_get_speed_mode(struct ufs_pa_layer_attr *p, char *result);
-static int ufs_qcom_get_bus_vote(struct ufs_qcom_host *host,
- const char *speed_mode);
static int ufs_qcom_set_bus_vote(struct ufs_qcom_host *host, int vote);
static void ufs_qcom_get_default_testbus_cfg(struct ufs_qcom_host *host);
+static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba,
+ u32 clk_cycles);
+
static void ufs_qcom_dump_regs(struct ufs_hba *hba, int offset, int len,
char *prefix)
{
err = ufs_qcom_host_clk_get(dev, "tx_lane1_sync_clk",
&host->tx_l1_sync_clk);
+
out:
return err;
}
do {
err = ufshcd_dme_get(hba,
- UIC_ARG_MIB(MPHY_TX_FSM_STATE), &tx_fsm_val);
+ UIC_ARG_MIB_SEL(MPHY_TX_FSM_STATE,
+ UIC_ARG_MPHY_TX_GEN_SEL_INDEX(0)),
+ &tx_fsm_val);
if (err || tx_fsm_val == TX_FSM_HIBERN8)
break;
*/
if (time_after(jiffies, timeout))
err = ufshcd_dme_get(hba,
- UIC_ARG_MIB(MPHY_TX_FSM_STATE), &tx_fsm_val);
+ UIC_ARG_MIB_SEL(MPHY_TX_FSM_STATE,
+ UIC_ARG_MPHY_TX_GEN_SEL_INDEX(0)),
+ &tx_fsm_val);
if (err) {
dev_err(hba->dev, "%s: unable to get TX_FSM_STATE, err %d\n",
return err;
}
+static void ufs_qcom_select_unipro_mode(struct ufs_qcom_host *host)
+{
+ ufshcd_rmwl(host->hba, QUNIPRO_SEL,
+ ufs_qcom_cap_qunipro(host) ? QUNIPRO_SEL : 0,
+ REG_UFS_CFG1);
+ /* make sure above configuration is applied before we return */
+ mb();
+}
+
static int ufs_qcom_power_up_sequence(struct ufs_hba *hba)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
usleep_range(1000, 1100);
ret = ufs_qcom_phy_calibrate_phy(phy, is_rate_B);
+
if (ret) {
- dev_err(hba->dev, "%s: ufs_qcom_phy_calibrate_phy() failed, ret = %d\n",
- __func__, ret);
+ dev_err(hba->dev,
+ "%s: ufs_qcom_phy_calibrate_phy()failed, ret = %d\n",
+ __func__, ret);
goto out;
}
ret = ufs_qcom_phy_is_pcs_ready(phy);
if (ret)
- dev_err(hba->dev, "%s: is_physical_coding_sublayer_ready() failed, ret = %d\n",
+ dev_err(hba->dev,
+ "%s: is_physical_coding_sublayer_ready() failed, ret = %d\n",
__func__, ret);
+ ufs_qcom_select_unipro_mode(host);
+
out:
return ret;
}
mb();
}
-static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba, bool status)
+static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba,
+ enum ufs_notify_change_status status)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
int err = 0;
}
/**
- * Returns non-zero for success (which rate of core_clk) and 0
- * in case of a failure
+ * Returns zero for success and non-zero in case of a failure
*/
-static unsigned long
-ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, u32 hs, u32 rate)
+static int ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear,
+ u32 hs, u32 rate, bool update_link_startup_timer)
{
+ int ret = 0;
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct ufs_clk_info *clki;
u32 core_clk_period_in_ns;
static u32 hs_fr_table_rA[][2] = {
{UFS_HS_G1, 0x1F},
{UFS_HS_G2, 0x3e},
+ {UFS_HS_G3, 0x7D},
};
static u32 hs_fr_table_rB[][2] = {
{UFS_HS_G1, 0x24},
{UFS_HS_G2, 0x49},
+ {UFS_HS_G3, 0x92},
};
/*
core_clk_rate = DEFAULT_CLK_RATE_HZ;
core_clk_cycles_per_us = core_clk_rate / USEC_PER_SEC;
- ufshcd_writel(hba, core_clk_cycles_per_us, REG_UFS_SYS1CLK_1US);
+ if (ufshcd_readl(hba, REG_UFS_SYS1CLK_1US) != core_clk_cycles_per_us) {
+ ufshcd_writel(hba, core_clk_cycles_per_us, REG_UFS_SYS1CLK_1US);
+ /*
+ * make sure above write gets applied before we return from
+ * this function.
+ */
+ mb();
+ }
+
+ if (ufs_qcom_cap_qunipro(host))
+ goto out;
core_clk_period_in_ns = NSEC_PER_SEC / core_clk_rate;
core_clk_period_in_ns <<= OFFSET_CLK_NS_REG;
goto out_error;
}
- /* this register 2 fields shall be written at once */
- ufshcd_writel(hba, core_clk_period_in_ns | tx_clk_cycles_per_us,
- REG_UFS_TX_SYMBOL_CLK_NS_US);
+ if (ufshcd_readl(hba, REG_UFS_TX_SYMBOL_CLK_NS_US) !=
+ (core_clk_period_in_ns | tx_clk_cycles_per_us)) {
+ /* this register 2 fields shall be written at once */
+ ufshcd_writel(hba, core_clk_period_in_ns | tx_clk_cycles_per_us,
+ REG_UFS_TX_SYMBOL_CLK_NS_US);
+ /*
+ * make sure above write gets applied before we return from
+ * this function.
+ */
+ mb();
+ }
+
+ if (update_link_startup_timer) {
+ ufshcd_writel(hba, ((core_clk_rate / MSEC_PER_SEC) * 100),
+ REG_UFS_PA_LINK_STARTUP_TIMER);
+ /*
+ * make sure that this configuration is applied before
+ * we return
+ */
+ mb();
+ }
goto out;
out_error:
- core_clk_rate = 0;
+ ret = -EINVAL;
out:
- return core_clk_rate;
+ return ret;
}
-static int ufs_qcom_link_startup_notify(struct ufs_hba *hba, bool status)
+static int ufs_qcom_link_startup_notify(struct ufs_hba *hba,
+ enum ufs_notify_change_status status)
{
- unsigned long core_clk_rate = 0;
- u32 core_clk_cycles_per_100ms;
+ int err = 0;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
switch (status) {
case PRE_CHANGE:
- core_clk_rate = ufs_qcom_cfg_timers(hba, UFS_PWM_G1,
- SLOWAUTO_MODE, 0);
- if (!core_clk_rate) {
+ if (ufs_qcom_cfg_timers(hba, UFS_PWM_G1, SLOWAUTO_MODE,
+ 0, true)) {
dev_err(hba->dev, "%s: ufs_qcom_cfg_timers() failed\n",
__func__);
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
- core_clk_cycles_per_100ms =
- (core_clk_rate / MSEC_PER_SEC) * 100;
- ufshcd_writel(hba, core_clk_cycles_per_100ms,
- REG_UFS_PA_LINK_STARTUP_TIMER);
+
+ if (ufs_qcom_cap_qunipro(host))
+ /*
+ * set unipro core clock cycles to 150 & clear clock
+ * divider
+ */
+ err = ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(hba,
+ 150);
+
break;
case POST_CHANGE:
ufs_qcom_link_startup_post_change(hba);
break;
}
- return 0;
+out:
+ return err;
}
static int ufs_qcom_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
* If UniPro link is not active, PHY ref_clk, main PHY analog power
* rail and low noise analog power rail for PLL can be switched off.
*/
- if (!ufs_qcom_is_link_active(hba))
+ if (!ufs_qcom_is_link_active(hba)) {
+ ufs_qcom_disable_lane_clks(host);
phy_power_off(phy);
+ }
out:
return ret;
goto out;
}
+ err = ufs_qcom_enable_lane_clks(host);
+ if (err)
+ goto out;
+
hba->is_sys_suspended = false;
out:
return 0;
}
+#ifdef CONFIG_MSM_BUS_SCALING
+static int ufs_qcom_get_bus_vote(struct ufs_qcom_host *host,
+ const char *speed_mode)
+{
+ struct device *dev = host->hba->dev;
+ struct device_node *np = dev->of_node;
+ int err;
+ const char *key = "qcom,bus-vector-names";
+
+ if (!speed_mode) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (host->bus_vote.is_max_bw_needed && !!strcmp(speed_mode, "MIN"))
+ err = of_property_match_string(np, key, "MAX");
+ else
+ err = of_property_match_string(np, key, speed_mode);
+
+out:
+ if (err < 0)
+ dev_err(dev, "%s: Invalid %s mode %d\n",
+ __func__, speed_mode, err);
+ return err;
+}
+
+static void ufs_qcom_get_speed_mode(struct ufs_pa_layer_attr *p, char *result)
+{
+ int gear = max_t(u32, p->gear_rx, p->gear_tx);
+ int lanes = max_t(u32, p->lane_rx, p->lane_tx);
+ int pwr;
+
+ /* default to PWM Gear 1, Lane 1 if power mode is not initialized */
+ if (!gear)
+ gear = 1;
+
+ if (!lanes)
+ lanes = 1;
+
+ if (!p->pwr_rx && !p->pwr_tx) {
+ pwr = SLOWAUTO_MODE;
+ snprintf(result, BUS_VECTOR_NAME_LEN, "MIN");
+ } else if (p->pwr_rx == FAST_MODE || p->pwr_rx == FASTAUTO_MODE ||
+ p->pwr_tx == FAST_MODE || p->pwr_tx == FASTAUTO_MODE) {
+ pwr = FAST_MODE;
+ snprintf(result, BUS_VECTOR_NAME_LEN, "%s_R%s_G%d_L%d", "HS",
+ p->hs_rate == PA_HS_MODE_B ? "B" : "A", gear, lanes);
+ } else {
+ pwr = SLOW_MODE;
+ snprintf(result, BUS_VECTOR_NAME_LEN, "%s_G%d_L%d",
+ "PWM", gear, lanes);
+ }
+}
+
+static int ufs_qcom_set_bus_vote(struct ufs_qcom_host *host, int vote)
+{
+ int err = 0;
+
+ if (vote != host->bus_vote.curr_vote) {
+ err = msm_bus_scale_client_update_request(
+ host->bus_vote.client_handle, vote);
+ if (err) {
+ dev_err(host->hba->dev,
+ "%s: msm_bus_scale_client_update_request() failed: bus_client_handle=0x%x, vote=%d, err=%d\n",
+ __func__, host->bus_vote.client_handle,
+ vote, err);
+ goto out;
+ }
+
+ host->bus_vote.curr_vote = vote;
+ }
+out:
+ return err;
+}
+
static int ufs_qcom_update_bus_bw_vote(struct ufs_qcom_host *host)
{
int vote;
return err;
}
+static ssize_t
+show_ufs_to_mem_max_bus_bw(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n",
+ host->bus_vote.is_max_bw_needed);
+}
+
+static ssize_t
+store_ufs_to_mem_max_bus_bw(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+ uint32_t value;
+
+ if (!kstrtou32(buf, 0, &value)) {
+ host->bus_vote.is_max_bw_needed = !!value;
+ ufs_qcom_update_bus_bw_vote(host);
+ }
+
+ return count;
+}
+
+static int ufs_qcom_bus_register(struct ufs_qcom_host *host)
+{
+ int err;
+ struct msm_bus_scale_pdata *bus_pdata;
+ struct device *dev = host->hba->dev;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct device_node *np = dev->of_node;
+
+ bus_pdata = msm_bus_cl_get_pdata(pdev);
+ if (!bus_pdata) {
+ dev_err(dev, "%s: failed to get bus vectors\n", __func__);
+ err = -ENODATA;
+ goto out;
+ }
+
+ err = of_property_count_strings(np, "qcom,bus-vector-names");
+ if (err < 0 || err != bus_pdata->num_usecases) {
+ dev_err(dev, "%s: qcom,bus-vector-names not specified correctly %d\n",
+ __func__, err);
+ goto out;
+ }
+
+ host->bus_vote.client_handle = msm_bus_scale_register_client(bus_pdata);
+ if (!host->bus_vote.client_handle) {
+ dev_err(dev, "%s: msm_bus_scale_register_client failed\n",
+ __func__);
+ err = -EFAULT;
+ goto out;
+ }
+
+ /* cache the vote index for minimum and maximum bandwidth */
+ host->bus_vote.min_bw_vote = ufs_qcom_get_bus_vote(host, "MIN");
+ host->bus_vote.max_bw_vote = ufs_qcom_get_bus_vote(host, "MAX");
+
+ host->bus_vote.max_bus_bw.show = show_ufs_to_mem_max_bus_bw;
+ host->bus_vote.max_bus_bw.store = store_ufs_to_mem_max_bus_bw;
+ sysfs_attr_init(&host->bus_vote.max_bus_bw.attr);
+ host->bus_vote.max_bus_bw.attr.name = "max_bus_bw";
+ host->bus_vote.max_bus_bw.attr.mode = S_IRUGO | S_IWUSR;
+ err = device_create_file(dev, &host->bus_vote.max_bus_bw);
+out:
+ return err;
+}
+#else /* CONFIG_MSM_BUS_SCALING */
+static int ufs_qcom_update_bus_bw_vote(struct ufs_qcom_host *host)
+{
+ return 0;
+}
+
+static int ufs_qcom_set_bus_vote(struct ufs_qcom_host *host, int vote)
+{
+ return 0;
+}
+
+static int ufs_qcom_bus_register(struct ufs_qcom_host *host)
+{
+ return 0;
+}
+#endif /* CONFIG_MSM_BUS_SCALING */
+
+static void ufs_qcom_dev_ref_clk_ctrl(struct ufs_qcom_host *host, bool enable)
+{
+ if (host->dev_ref_clk_ctrl_mmio &&
+ (enable ^ host->is_dev_ref_clk_enabled)) {
+ u32 temp = readl_relaxed(host->dev_ref_clk_ctrl_mmio);
+
+ if (enable)
+ temp |= host->dev_ref_clk_en_mask;
+ else
+ temp &= ~host->dev_ref_clk_en_mask;
+
+ /*
+ * If we are here to disable this clock it might be immediately
+ * after entering into hibern8 in which case we need to make
+ * sure that device ref_clk is active at least 1us after the
+ * hibern8 enter.
+ */
+ if (!enable)
+ udelay(1);
+
+ writel_relaxed(temp, host->dev_ref_clk_ctrl_mmio);
+
+ /* ensure that ref_clk is enabled/disabled before we return */
+ wmb();
+
+ /*
+ * If we call hibern8 exit after this, we need to make sure that
+ * device ref_clk is stable for at least 1us before the hibern8
+ * exit command.
+ */
+ if (enable)
+ udelay(1);
+
+ host->is_dev_ref_clk_enabled = enable;
+ }
+}
+
static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
- bool status,
+ enum ufs_notify_change_status status,
struct ufs_pa_layer_attr *dev_max_params,
struct ufs_pa_layer_attr *dev_req_params)
{
ufs_qcom_cap.desired_working_mode =
UFS_QCOM_LIMIT_DESIRED_MODE;
+ if (host->hw_ver.major == 0x1) {
+ /*
+ * HS-G3 operations may not reliably work on legacy QCOM
+ * UFS host controller hardware even though capability
+ * exchange during link startup phase may end up
+ * negotiating maximum supported gear as G3.
+ * Hence downgrade the maximum supported gear to HS-G2.
+ */
+ if (ufs_qcom_cap.hs_tx_gear > UFS_HS_G2)
+ ufs_qcom_cap.hs_tx_gear = UFS_HS_G2;
+ if (ufs_qcom_cap.hs_rx_gear > UFS_HS_G2)
+ ufs_qcom_cap.hs_rx_gear = UFS_HS_G2;
+ }
+
ret = ufs_qcom_get_pwr_dev_param(&ufs_qcom_cap,
dev_max_params,
dev_req_params);
break;
case POST_CHANGE:
- if (!ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx,
+ if (ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx,
dev_req_params->pwr_rx,
- dev_req_params->hs_rate)) {
+ dev_req_params->hs_rate, false)) {
dev_err(hba->dev, "%s: ufs_qcom_cfg_timers() failed\n",
__func__);
/*
if (host->hw_ver.minor == 0x0001 && host->hw_ver.step == 0x0001)
hba->quirks |= UFSHCD_QUIRK_BROKEN_INTR_AGGR;
+
+ hba->quirks |= UFSHCD_QUIRK_BROKEN_LCC;
}
if (host->hw_ver.major >= 0x2) {
- hba->quirks |= UFSHCD_QUIRK_BROKEN_LCC;
hba->quirks |= UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION;
if (!ufs_qcom_cap_qunipro(host))
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
- if (host->hw_ver.major >= 0x2)
- host->caps = UFS_QCOM_CAP_QUNIPRO;
-}
-
-static int ufs_qcom_get_bus_vote(struct ufs_qcom_host *host,
- const char *speed_mode)
-{
- struct device *dev = host->hba->dev;
- struct device_node *np = dev->of_node;
- int err;
- const char *key = "qcom,bus-vector-names";
-
- if (!speed_mode) {
- err = -EINVAL;
- goto out;
- }
-
- if (host->bus_vote.is_max_bw_needed && !!strcmp(speed_mode, "MIN"))
- err = of_property_match_string(np, key, "MAX");
- else
- err = of_property_match_string(np, key, speed_mode);
-
-out:
- if (err < 0)
- dev_err(dev, "%s: Invalid %s mode %d\n",
- __func__, speed_mode, err);
- return err;
-}
-
-static int ufs_qcom_set_bus_vote(struct ufs_qcom_host *host, int vote)
-{
- int err = 0;
-
- if (vote != host->bus_vote.curr_vote)
- host->bus_vote.curr_vote = vote;
-
- return err;
-}
-
-static void ufs_qcom_get_speed_mode(struct ufs_pa_layer_attr *p, char *result)
-{
- int gear = max_t(u32, p->gear_rx, p->gear_tx);
- int lanes = max_t(u32, p->lane_rx, p->lane_tx);
- int pwr;
-
- /* default to PWM Gear 1, Lane 1 if power mode is not initialized */
- if (!gear)
- gear = 1;
-
- if (!lanes)
- lanes = 1;
+ hba->caps |= UFSHCD_CAP_CLK_GATING | UFSHCD_CAP_HIBERN8_WITH_CLK_GATING;
+ hba->caps |= UFSHCD_CAP_CLK_SCALING;
+ hba->caps |= UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
- if (!p->pwr_rx && !p->pwr_tx) {
- pwr = SLOWAUTO_MODE;
- snprintf(result, BUS_VECTOR_NAME_LEN, "MIN");
- } else if (p->pwr_rx == FAST_MODE || p->pwr_rx == FASTAUTO_MODE ||
- p->pwr_tx == FAST_MODE || p->pwr_tx == FASTAUTO_MODE) {
- pwr = FAST_MODE;
- snprintf(result, BUS_VECTOR_NAME_LEN, "%s_R%s_G%d_L%d", "HS",
- p->hs_rate == PA_HS_MODE_B ? "B" : "A", gear, lanes);
- } else {
- pwr = SLOW_MODE;
- snprintf(result, BUS_VECTOR_NAME_LEN, "%s_G%d_L%d",
- "PWM", gear, lanes);
+ if (host->hw_ver.major >= 0x2) {
+ host->caps = UFS_QCOM_CAP_QUNIPRO |
+ UFS_QCOM_CAP_RETAIN_SEC_CFG_AFTER_PWR_COLLAPSE;
}
}
+/**
+ * ufs_qcom_setup_clocks - enables/disable clocks
+ * @hba: host controller instance
+ * @on: If true, enable clocks else disable them.
+ *
+ * Returns 0 on success, non-zero on failure.
+ */
static int ufs_qcom_setup_clocks(struct ufs_hba *hba, bool on)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
- int err = 0;
+ int err;
int vote = 0;
/*
ufs_qcom_phy_disable_iface_clk(host->generic_phy);
goto out;
}
- /* enable the device ref clock */
- ufs_qcom_phy_enable_dev_ref_clk(host->generic_phy);
vote = host->bus_vote.saved_vote;
if (vote == host->bus_vote.min_bw_vote)
ufs_qcom_update_bus_bw_vote(host);
+
} else {
+
/* M-PHY RMMI interface clocks can be turned off */
ufs_qcom_phy_disable_iface_clk(host->generic_phy);
- if (!ufs_qcom_is_link_active(hba)) {
- /* turn off UFS local PHY ref_clk */
- ufs_qcom_phy_disable_ref_clk(host->generic_phy);
+ if (!ufs_qcom_is_link_active(hba))
/* disable device ref_clk */
- ufs_qcom_phy_disable_dev_ref_clk(host->generic_phy);
- }
+ ufs_qcom_dev_ref_clk_ctrl(host, false);
+
vote = host->bus_vote.min_bw_vote;
}
return err;
}
-static ssize_t
-show_ufs_to_mem_max_bus_bw(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ufs_hba *hba = dev_get_drvdata(dev);
- struct ufs_qcom_host *host = ufshcd_get_variant(hba);
-
- return snprintf(buf, PAGE_SIZE, "%u\n",
- host->bus_vote.is_max_bw_needed);
-}
-
-static ssize_t
-store_ufs_to_mem_max_bus_bw(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ufs_hba *hba = dev_get_drvdata(dev);
- struct ufs_qcom_host *host = ufshcd_get_variant(hba);
- uint32_t value;
-
- if (!kstrtou32(buf, 0, &value)) {
- host->bus_vote.is_max_bw_needed = !!value;
- ufs_qcom_update_bus_bw_vote(host);
- }
-
- return count;
-}
-
-static int ufs_qcom_bus_register(struct ufs_qcom_host *host)
-{
- int err;
- struct device *dev = host->hba->dev;
- struct device_node *np = dev->of_node;
-
- err = of_property_count_strings(np, "qcom,bus-vector-names");
- if (err < 0 ) {
- dev_err(dev, "%s: qcom,bus-vector-names not specified correctly %d\n",
- __func__, err);
- goto out;
- }
-
- /* cache the vote index for minimum and maximum bandwidth */
- host->bus_vote.min_bw_vote = ufs_qcom_get_bus_vote(host, "MIN");
- host->bus_vote.max_bw_vote = ufs_qcom_get_bus_vote(host, "MAX");
-
- host->bus_vote.max_bus_bw.show = show_ufs_to_mem_max_bus_bw;
- host->bus_vote.max_bus_bw.store = store_ufs_to_mem_max_bus_bw;
- sysfs_attr_init(&host->bus_vote.max_bus_bw.attr);
- host->bus_vote.max_bus_bw.attr.name = "max_bus_bw";
- host->bus_vote.max_bus_bw.attr.mode = S_IRUGO | S_IWUSR;
- err = device_create_file(dev, &host->bus_vote.max_bus_bw);
-out:
- return err;
-}
-
#define ANDROID_BOOT_DEV_MAX 30
static char android_boot_dev[ANDROID_BOOT_DEV_MAX];
{
int err;
struct device *dev = hba->dev;
+ struct platform_device *pdev = to_platform_device(dev);
struct ufs_qcom_host *host;
+ struct resource *res;
if (strlen(android_boot_dev) && strcmp(android_boot_dev, dev_name(dev)))
return -ENODEV;
goto out;
}
+ /* Make a two way bind between the qcom host and the hba */
host->hba = hba;
ufshcd_set_variant(hba, host);
+ /*
+ * voting/devoting device ref_clk source is time consuming hence
+ * skip devoting it during aggressive clock gating. This clock
+ * will still be gated off during runtime suspend.
+ */
host->generic_phy = devm_phy_get(dev, "ufsphy");
if (IS_ERR(host->generic_phy)) {
ufs_qcom_get_controller_revision(hba, &host->hw_ver.major,
&host->hw_ver.minor, &host->hw_ver.step);
+ /*
+ * for newer controllers, device reference clock control bit has
+ * moved inside UFS controller register address space itself.
+ */
+ if (host->hw_ver.major >= 0x02) {
+ host->dev_ref_clk_ctrl_mmio = hba->mmio_base + REG_UFS_CFG1;
+ host->dev_ref_clk_en_mask = BIT(26);
+ } else {
+ /* "dev_ref_clk_ctrl_mem" is optional resource */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (res) {
+ host->dev_ref_clk_ctrl_mmio =
+ devm_ioremap_resource(dev, res);
+ if (IS_ERR(host->dev_ref_clk_ctrl_mmio)) {
+ dev_warn(dev,
+ "%s: could not map dev_ref_clk_ctrl_mmio, err %ld\n",
+ __func__,
+ PTR_ERR(host->dev_ref_clk_ctrl_mmio));
+ host->dev_ref_clk_ctrl_mmio = NULL;
+ }
+ host->dev_ref_clk_en_mask = BIT(5);
+ }
+ }
+
/* update phy revision information before calling phy_init() */
ufs_qcom_phy_save_controller_version(host->generic_phy,
host->hw_ver.major, host->hw_ver.minor, host->hw_ver.step);
ufs_qcom_set_caps(hba);
ufs_qcom_advertise_quirks(hba);
- hba->caps |= UFSHCD_CAP_CLK_GATING | UFSHCD_CAP_CLK_SCALING;
- hba->caps |= UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
-
ufs_qcom_setup_clocks(hba, true);
if (hba->dev->id < MAX_UFS_QCOM_HOSTS)
phy_power_off(host->generic_phy);
}
-static
-void ufs_qcom_clk_scale_notify(struct ufs_hba *hba)
+static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba,
+ u32 clk_cycles)
+{
+ int err;
+ u32 core_clk_ctrl_reg;
+
+ if (clk_cycles > DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK)
+ return -EINVAL;
+
+ err = ufshcd_dme_get(hba,
+ UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL),
+ &core_clk_ctrl_reg);
+ if (err)
+ goto out;
+
+ core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK;
+ core_clk_ctrl_reg |= clk_cycles;
+
+ /* Clear CORE_CLK_DIV_EN */
+ core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT;
+
+ err = ufshcd_dme_set(hba,
+ UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL),
+ core_clk_ctrl_reg);
+out:
+ return err;
+}
+
+static int ufs_qcom_clk_scale_up_pre_change(struct ufs_hba *hba)
+{
+ /* nothing to do as of now */
+ return 0;
+}
+
+static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba)
+{
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+
+ if (!ufs_qcom_cap_qunipro(host))
+ return 0;
+
+ /* set unipro core clock cycles to 150 and clear clock divider */
+ return ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(hba, 150);
+}
+
+static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba)
+{
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+ int err;
+ u32 core_clk_ctrl_reg;
+
+ if (!ufs_qcom_cap_qunipro(host))
+ return 0;
+
+ err = ufshcd_dme_get(hba,
+ UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL),
+ &core_clk_ctrl_reg);
+
+ /* make sure CORE_CLK_DIV_EN is cleared */
+ if (!err &&
+ (core_clk_ctrl_reg & DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT)) {
+ core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT;
+ err = ufshcd_dme_set(hba,
+ UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL),
+ core_clk_ctrl_reg);
+ }
+
+ return err;
+}
+
+static int ufs_qcom_clk_scale_down_post_change(struct ufs_hba *hba)
+{
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+
+ if (!ufs_qcom_cap_qunipro(host))
+ return 0;
+
+ /* set unipro core clock cycles to 75 and clear clock divider */
+ return ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(hba, 75);
+}
+
+static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba,
+ bool scale_up, enum ufs_notify_change_status status)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct ufs_pa_layer_attr *dev_req_params = &host->dev_req_params;
+ int err = 0;
- if (!dev_req_params)
- return;
+ if (status == PRE_CHANGE) {
+ if (scale_up)
+ err = ufs_qcom_clk_scale_up_pre_change(hba);
+ else
+ err = ufs_qcom_clk_scale_down_pre_change(hba);
+ } else {
+ if (scale_up)
+ err = ufs_qcom_clk_scale_up_post_change(hba);
+ else
+ err = ufs_qcom_clk_scale_down_post_change(hba);
+
+ if (err || !dev_req_params)
+ goto out;
+
+ ufs_qcom_cfg_timers(hba,
+ dev_req_params->gear_rx,
+ dev_req_params->pwr_rx,
+ dev_req_params->hs_rate,
+ false);
+ ufs_qcom_update_bus_bw_vote(host);
+ }
+
+out:
+ return err;
}
static void ufs_qcom_get_default_testbus_cfg(struct ufs_qcom_host *host)
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff