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authorJames Bottomley <JBottomley@Odin.com>2015-11-12 07:06:18 -0500
committerJames Bottomley <JBottomley@Odin.com>2015-11-12 07:06:18 -0500
commitfebdfbd2137a5727f70dfbf920105c07e6c2a21e (patch)
tree9483a5493ad3e08626e1f53ded594f88a6f4e710 /drivers/scsi/ufs
parent0da39687a15403251bdfd1c6fb18025c0607326b (diff)
parent2c5d16d6a9e7218e57b716e4fd9d77c776d21471 (diff)
downloadlinux-febdfbd2137a5727f70dfbf920105c07e6c2a21e.tar.gz
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Merge tag '4.4-scsi-mkp' into misc
SCSI queue for 4.4. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs')
-rw-r--r--drivers/scsi/ufs/Kconfig2
-rw-r--r--drivers/scsi/ufs/ufs-qcom.c905
-rw-r--r--drivers/scsi/ufs/ufs-qcom.h68
-rw-r--r--drivers/scsi/ufs/ufshcd-pltfrm.c98
-rw-r--r--drivers/scsi/ufs/ufshcd-pltfrm.h41
-rw-r--r--drivers/scsi/ufs/ufshcd.c122
-rw-r--r--drivers/scsi/ufs/ufshcd.h149
7 files changed, 1048 insertions, 337 deletions
diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig
index e94538362536..5f4530744e0a 100644
--- a/drivers/scsi/ufs/Kconfig
+++ b/drivers/scsi/ufs/Kconfig
@@ -72,7 +72,7 @@ config SCSI_UFSHCD_PLATFORM
If unsure, say N.
config SCSI_UFS_QCOM
- bool "QCOM specific hooks to UFS controller platform driver"
+ tristate "QCOM specific hooks to UFS controller platform driver"
depends on SCSI_UFSHCD_PLATFORM && ARCH_QCOM
select PHY_QCOM_UFS
help
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 4cdffa46d401..4f38d008bfb4 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -19,16 +19,44 @@
#include <linux/phy/phy-qcom-ufs.h>
#include "ufshcd.h"
+#include "ufshcd-pltfrm.h"
#include "unipro.h"
#include "ufs-qcom.h"
#include "ufshci.h"
+#define UFS_QCOM_DEFAULT_DBG_PRINT_EN \
+ (UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_TEST_BUS_EN)
+
+enum {
+ TSTBUS_UAWM,
+ TSTBUS_UARM,
+ TSTBUS_TXUC,
+ TSTBUS_RXUC,
+ TSTBUS_DFC,
+ TSTBUS_TRLUT,
+ TSTBUS_TMRLUT,
+ TSTBUS_OCSC,
+ TSTBUS_UTP_HCI,
+ TSTBUS_COMBINED,
+ TSTBUS_WRAPPER,
+ TSTBUS_UNIPRO,
+ TSTBUS_MAX,
+};
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)
+{
+ print_hex_dump(KERN_ERR, prefix,
+ len > 4 ? DUMP_PREFIX_OFFSET : DUMP_PREFIX_NONE,
+ 16, 4, (void __force *)hba->mmio_base + offset,
+ len * 4, false);
+}
static int ufs_qcom_get_connected_tx_lanes(struct ufs_hba *hba, u32 *tx_lanes)
{
@@ -149,13 +177,14 @@ static int ufs_qcom_init_lane_clks(struct ufs_qcom_host *host)
err = ufs_qcom_host_clk_get(dev, "tx_lane1_sync_clk",
&host->tx_l1_sync_clk);
+
out:
return err;
}
static int ufs_qcom_link_startup_post_change(struct ufs_hba *hba)
{
- struct ufs_qcom_host *host = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct phy *phy = host->generic_phy;
u32 tx_lanes;
int err = 0;
@@ -181,7 +210,9 @@ static int ufs_qcom_check_hibern8(struct ufs_hba *hba)
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;
@@ -195,7 +226,9 @@ static int ufs_qcom_check_hibern8(struct ufs_hba *hba)
*/
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",
@@ -209,9 +242,18 @@ static int ufs_qcom_check_hibern8(struct ufs_hba *hba)
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 = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct phy *phy = host->generic_phy;
int ret = 0;
bool is_rate_B = (UFS_QCOM_LIMIT_HS_RATE == PA_HS_MODE_B)
@@ -223,9 +265,11 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *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;
}
@@ -246,9 +290,12 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba)
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;
}
@@ -271,9 +318,10 @@ static void ufs_qcom_enable_hw_clk_gating(struct ufs_hba *hba)
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 = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
int err = 0;
switch (status) {
@@ -301,13 +349,13 @@ static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba, bool status)
}
/**
- * 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)
{
- struct ufs_qcom_host *host = hba->priv;
+ int ret = 0;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct ufs_clk_info *clki;
u32 core_clk_period_in_ns;
u32 tx_clk_cycles_per_us = 0;
@@ -324,11 +372,13 @@ ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, u32 hs, u32 rate)
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},
};
/*
@@ -356,7 +406,17 @@ ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, u32 hs, u32 rate)
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;
@@ -406,35 +466,59 @@ ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, u32 hs, u32 rate)
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);
@@ -443,12 +527,13 @@ static int ufs_qcom_link_startup_notify(struct ufs_hba *hba, bool status)
break;
}
- return 0;
+out:
+ return err;
}
static int ufs_qcom_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
{
- struct ufs_qcom_host *host = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct phy *phy = host->generic_phy;
int ret = 0;
@@ -470,8 +555,10 @@ 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;
@@ -479,7 +566,7 @@ out:
static int ufs_qcom_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
{
- struct ufs_qcom_host *host = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct phy *phy = host->generic_phy;
int err;
@@ -490,6 +577,10 @@ static int ufs_qcom_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
goto out;
}
+ err = ufs_qcom_enable_lane_clks(host);
+ if (err)
+ goto out;
+
hba->is_sys_suspended = false;
out:
@@ -594,6 +685,81 @@ static int ufs_qcom_get_pwr_dev_param(struct ufs_qcom_dev_params *qcom_param,
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;
@@ -615,13 +781,137 @@ static int ufs_qcom_update_bus_bw_vote(struct ufs_qcom_host *host)
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)
{
u32 val;
- struct ufs_qcom_host *host = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct phy *phy = host->generic_phy;
struct ufs_qcom_dev_params ufs_qcom_cap;
int ret = 0;
@@ -649,6 +939,20 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
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);
@@ -660,9 +964,9 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
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__);
/*
@@ -696,7 +1000,7 @@ out:
static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba)
{
- struct ufs_qcom_host *host = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
if (host->hw_ver.major == 0x1)
return UFSHCI_VERSION_11;
@@ -715,7 +1019,7 @@ static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba)
*/
static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)
{
- struct ufs_qcom_host *host = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
if (host->hw_ver.major == 0x01) {
hba->quirks |= UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS
@@ -724,10 +1028,11 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)
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))
@@ -740,79 +1045,29 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)
static void ufs_qcom_set_caps(struct ufs_hba *hba)
{
- struct ufs_qcom_host *host = hba->priv;
+ 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 = hba->priv;
- int err = 0;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+ int err;
int vote = 0;
/*
@@ -835,20 +1090,18 @@ static int ufs_qcom_setup_clocks(struct ufs_hba *hba, bool on)
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;
}
@@ -861,68 +1114,17 @@ out:
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 = hba->priv;
-
- 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 = hba->priv;
- 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];
-static int get_android_boot_dev(char *str)
+
+#ifndef MODULE
+static int __init get_android_boot_dev(char *str)
{
strlcpy(android_boot_dev, str, ANDROID_BOOT_DEV_MAX);
return 1;
}
__setup("androidboot.bootdevice=", get_android_boot_dev);
+#endif
/**
* ufs_qcom_init - bind phy with controller
@@ -938,7 +1140,9 @@ static int ufs_qcom_init(struct ufs_hba *hba)
{
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;
@@ -950,9 +1154,15 @@ static int ufs_qcom_init(struct ufs_hba *hba)
goto out;
}
+ /* Make a two way bind between the qcom host and the hba */
host->hba = hba;
- hba->priv = (void *)host;
+ 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)) {
@@ -968,6 +1178,30 @@ static int ufs_qcom_init(struct ufs_hba *hba)
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);
@@ -984,14 +1218,20 @@ static int ufs_qcom_init(struct ufs_hba *hba)
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)
ufs_qcom_hosts[hba->dev->id] = host;
+ host->dbg_print_en |= UFS_QCOM_DEFAULT_DBG_PRINT_EN;
+ ufs_qcom_get_default_testbus_cfg(host);
+ err = ufs_qcom_testbus_config(host);
+ if (err) {
+ dev_warn(dev, "%s: failed to configure the testbus %d\n",
+ __func__, err);
+ err = 0;
+ }
+
goto out;
out_disable_phy:
@@ -1000,40 +1240,266 @@ out_unregister_bus:
phy_exit(host->generic_phy);
out_host_free:
devm_kfree(dev, host);
- hba->priv = NULL;
+ ufshcd_set_variant(hba, NULL);
out:
return err;
}
static void ufs_qcom_exit(struct ufs_hba *hba)
{
- struct ufs_qcom_host *host = hba->priv;
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
ufs_qcom_disable_lane_clks(host);
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 = hba->priv;
+ 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);
- ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx,
- dev_req_params->pwr_rx,
- dev_req_params->hs_rate);
+ 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)
+{
+ /* provide a legal default configuration */
+ host->testbus.select_major = TSTBUS_UAWM;
+ host->testbus.select_minor = 1;
+}
+
+static bool ufs_qcom_testbus_cfg_is_ok(struct ufs_qcom_host *host)
+{
+ if (host->testbus.select_major >= TSTBUS_MAX) {
+ dev_err(host->hba->dev,
+ "%s: UFS_CFG1[TEST_BUS_SEL} may not equal 0x%05X\n",
+ __func__, host->testbus.select_major);
+ return false;
+ }
+
+ /*
+ * Not performing check for each individual select_major
+ * mappings of select_minor, since there is no harm in
+ * configuring a non-existent select_minor
+ */
+ if (host->testbus.select_minor > 0x1F) {
+ dev_err(host->hba->dev,
+ "%s: 0x%05X is not a legal testbus option\n",
+ __func__, host->testbus.select_minor);
+ return false;
+ }
+
+ return true;
+}
+
+int ufs_qcom_testbus_config(struct ufs_qcom_host *host)
+{
+ int reg;
+ int offset;
+ u32 mask = TEST_BUS_SUB_SEL_MASK;
+
+ if (!host)
+ return -EINVAL;
+
+ if (!ufs_qcom_testbus_cfg_is_ok(host))
+ return -EPERM;
+
+ switch (host->testbus.select_major) {
+ case TSTBUS_UAWM:
+ reg = UFS_TEST_BUS_CTRL_0;
+ offset = 24;
+ break;
+ case TSTBUS_UARM:
+ reg = UFS_TEST_BUS_CTRL_0;
+ offset = 16;
+ break;
+ case TSTBUS_TXUC:
+ reg = UFS_TEST_BUS_CTRL_0;
+ offset = 8;
+ break;
+ case TSTBUS_RXUC:
+ reg = UFS_TEST_BUS_CTRL_0;
+ offset = 0;
+ break;
+ case TSTBUS_DFC:
+ reg = UFS_TEST_BUS_CTRL_1;
+ offset = 24;
+ break;
+ case TSTBUS_TRLUT:
+ reg = UFS_TEST_BUS_CTRL_1;
+ offset = 16;
+ break;
+ case TSTBUS_TMRLUT:
+ reg = UFS_TEST_BUS_CTRL_1;
+ offset = 8;
+ break;
+ case TSTBUS_OCSC:
+ reg = UFS_TEST_BUS_CTRL_1;
+ offset = 0;
+ break;
+ case TSTBUS_WRAPPER:
+ reg = UFS_TEST_BUS_CTRL_2;
+ offset = 16;
+ break;
+ case TSTBUS_COMBINED:
+ reg = UFS_TEST_BUS_CTRL_2;
+ offset = 8;
+ break;
+ case TSTBUS_UTP_HCI:
+ reg = UFS_TEST_BUS_CTRL_2;
+ offset = 0;
+ break;
+ case TSTBUS_UNIPRO:
+ reg = UFS_UNIPRO_CFG;
+ offset = 1;
+ break;
+ /*
+ * No need for a default case, since
+ * ufs_qcom_testbus_cfg_is_ok() checks that the configuration
+ * is legal
+ */
+ }
+ mask <<= offset;
+
+ pm_runtime_get_sync(host->hba->dev);
+ ufshcd_hold(host->hba, false);
+ ufshcd_rmwl(host->hba, TEST_BUS_SEL,
+ (u32)host->testbus.select_major << 19,
+ REG_UFS_CFG1);
+ ufshcd_rmwl(host->hba, mask,
+ (u32)host->testbus.select_minor << offset,
+ reg);
+ ufshcd_release(host->hba);
+ pm_runtime_put_sync(host->hba->dev);
+
+ return 0;
+}
+
+static void ufs_qcom_testbus_read(struct ufs_hba *hba)
+{
+ ufs_qcom_dump_regs(hba, UFS_TEST_BUS, 1, "UFS_TEST_BUS ");
+}
+
+static void ufs_qcom_dump_dbg_regs(struct ufs_hba *hba)
+{
+ ufs_qcom_dump_regs(hba, REG_UFS_SYS1CLK_1US, 16,
+ "HCI Vendor Specific Registers ");
+
+ ufs_qcom_testbus_read(hba);
+}
/**
* struct ufs_hba_qcom_vops - UFS QCOM specific variant operations
*
* 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,
@@ -1045,5 +1511,66 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
.pwr_change_notify = ufs_qcom_pwr_change_notify,
.suspend = ufs_qcom_suspend,
.resume = ufs_qcom_resume,
+ .dbg_register_dump = ufs_qcom_dump_dbg_regs,
+};
+
+/**
+ * ufs_qcom_probe - probe routine of the driver
+ * @pdev: pointer to Platform device handle
+ *
+ * Return zero for success and non-zero for failure
+ */
+static int ufs_qcom_probe(struct platform_device *pdev)
+{
+ int err;
+ struct device *dev = &pdev->dev;
+
+ /* Perform generic probe */
+ err = ufshcd_pltfrm_init(pdev, &ufs_hba_qcom_vops);
+ if (err)
+ dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
+
+ return err;
+}
+
+/**
+ * ufs_qcom_remove - set driver_data of the device to NULL
+ * @pdev: pointer to platform device handle
+ *
+ * Always return 0
+ */
+static int ufs_qcom_remove(struct platform_device *pdev)
+{
+ struct ufs_hba *hba = platform_get_drvdata(pdev);
+
+ pm_runtime_get_sync(&(pdev)->dev);
+ ufshcd_remove(hba);
+ return 0;
+}
+
+static const struct of_device_id ufs_qcom_of_match[] = {
+ { .compatible = "qcom,ufshc"},
+ {},
+};
+
+static const struct dev_pm_ops ufs_qcom_pm_ops = {
+ .suspend = ufshcd_pltfrm_suspend,
+ .resume = ufshcd_pltfrm_resume,
+ .runtime_suspend = ufshcd_pltfrm_runtime_suspend,
+ .runtime_resume = ufshcd_pltfrm_runtime_resume,
+ .runtime_idle = ufshcd_pltfrm_runtime_idle,
};
-EXPORT_SYMBOL(ufs_hba_qcom_vops);
+
+static struct platform_driver ufs_qcom_pltform = {
+ .probe = ufs_qcom_probe,
+ .remove = ufs_qcom_remove,
+ .shutdown = ufshcd_pltfrm_shutdown,
+ .driver = {
+ .name = "ufshcd-qcom",
+ .pm = &ufs_qcom_pm_ops,
+ .of_match_table = of_match_ptr(ufs_qcom_of_match),
+ },
+};
+module_platform_driver(ufs_qcom_pltform);
+
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h
index db2c0a00e846..36249b35f858 100644
--- a/drivers/scsi/ufs/ufs-qcom.h
+++ b/drivers/scsi/ufs/ufs-qcom.h
@@ -35,8 +35,8 @@
#define UFS_QCOM_LIMIT_NUM_LANES_RX 2
#define UFS_QCOM_LIMIT_NUM_LANES_TX 2
-#define UFS_QCOM_LIMIT_HSGEAR_RX UFS_HS_G2
-#define UFS_QCOM_LIMIT_HSGEAR_TX UFS_HS_G2
+#define UFS_QCOM_LIMIT_HSGEAR_RX UFS_HS_G3
+#define UFS_QCOM_LIMIT_HSGEAR_TX UFS_HS_G3
#define UFS_QCOM_LIMIT_PWMGEAR_RX UFS_PWM_G4
#define UFS_QCOM_LIMIT_PWMGEAR_TX UFS_PWM_G4
#define UFS_QCOM_LIMIT_RX_PWR_PWM SLOW_MODE
@@ -58,6 +58,21 @@ enum {
REG_UFS_CFG2 = 0xE0,
REG_UFS_HW_VERSION = 0xE4,
+ UFS_TEST_BUS = 0xE8,
+ UFS_TEST_BUS_CTRL_0 = 0xEC,
+ UFS_TEST_BUS_CTRL_1 = 0xF0,
+ UFS_TEST_BUS_CTRL_2 = 0xF4,
+ UFS_UNIPRO_CFG = 0xF8,
+
+ /*
+ * QCOM UFS host controller vendor specific registers
+ * added in HW Version 3.0.0
+ */
+ UFS_AH8_CFG = 0xFC,
+};
+
+/* QCOM UFS host controller vendor specific debug registers */
+enum {
UFS_DBG_RD_REG_UAWM = 0x100,
UFS_DBG_RD_REG_UARM = 0x200,
UFS_DBG_RD_REG_TXUC = 0x300,
@@ -73,6 +88,14 @@ enum {
UFS_UFS_DBG_RD_EDTL_RAM = 0x1900,
};
+#define UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(x) (0x000 + x)
+#define UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(x) (0x400 + x)
+
+/* bit definitions for REG_UFS_CFG1 register */
+#define QUNIPRO_SEL UFS_BIT(0)
+#define TEST_BUS_EN BIT(18)
+#define TEST_BUS_SEL GENMASK(22, 19)
+
/* bit definitions for REG_UFS_CFG2 register */
#define UAWM_HW_CGC_EN (1 << 0)
#define UARM_HW_CGC_EN (1 << 1)
@@ -83,6 +106,9 @@ enum {
#define TMRLUT_HW_CGC_EN (1 << 6)
#define OCSC_HW_CGC_EN (1 << 7)
+/* bit definition for UFS_UFS_TEST_BUS_CTRL_n */
+#define TEST_BUS_SUB_SEL_MASK 0x1F /* All XXX_SEL fields are 5 bits wide */
+
#define REG_UFS_CFG2_CGC_EN_ALL (UAWM_HW_CGC_EN | UARM_HW_CGC_EN |\
TXUC_HW_CGC_EN | RXUC_HW_CGC_EN |\
DFC_HW_CGC_EN | TRLUT_HW_CGC_EN |\
@@ -106,6 +132,21 @@ enum ufs_qcom_phy_init_type {
UFS_PHY_INIT_CFG_RESTORE,
};
+/* QCOM UFS debug print bit mask */
+#define UFS_QCOM_DBG_PRINT_REGS_EN BIT(0)
+#define UFS_QCOM_DBG_PRINT_ICE_REGS_EN BIT(1)
+#define UFS_QCOM_DBG_PRINT_TEST_BUS_EN BIT(2)
+
+#define UFS_QCOM_DBG_PRINT_ALL \
+ (UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_ICE_REGS_EN | \
+ UFS_QCOM_DBG_PRINT_TEST_BUS_EN)
+
+/* QUniPro Vendor specific attributes */
+#define DME_VS_CORE_CLK_CTRL 0xD002
+/* bit and mask definitions for DME_VS_CORE_CLK_CTRL attribute */
+#define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8)
+#define DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK 0xFF
+
static inline void
ufs_qcom_get_controller_revision(struct ufs_hba *hba,
u8 *major, u16 *minor, u16 *step)
@@ -157,8 +198,13 @@ struct ufs_hw_version {
u16 minor;
u8 major;
};
-struct ufs_qcom_host {
+struct ufs_qcom_testbus {
+ u8 select_major;
+ u8 select_minor;
+};
+
+struct ufs_qcom_host {
/*
* Set this capability if host controller supports the QUniPro mode
* and if driver wants the Host controller to operate in QUniPro mode.
@@ -166,6 +212,12 @@ struct ufs_qcom_host {
* controller supports the QUniPro mode.
*/
#define UFS_QCOM_CAP_QUNIPRO UFS_BIT(0)
+
+ /*
+ * Set this capability if host controller can retain the secure
+ * configuration even after UFS controller core power collapse.
+ */
+ #define UFS_QCOM_CAP_RETAIN_SEC_CFG_AFTER_PWR_COLLAPSE UFS_BIT(1)
u32 caps;
struct phy *generic_phy;
@@ -178,13 +230,23 @@ struct ufs_qcom_host {
struct clk *tx_l1_sync_clk;
bool is_lane_clks_enabled;
+ void __iomem *dev_ref_clk_ctrl_mmio;
+ bool is_dev_ref_clk_enabled;
struct ufs_hw_version hw_ver;
+
+ u32 dev_ref_clk_en_mask;
+
+ /* Bitmask for enabling debug prints */
+ u32 dbg_print_en;
+ struct ufs_qcom_testbus testbus;
};
#define ufs_qcom_is_link_off(hba) ufshcd_is_link_off(hba)
#define ufs_qcom_is_link_active(hba) ufshcd_is_link_active(hba)
#define ufs_qcom_is_link_hibern8(hba) ufshcd_is_link_hibern8(hba)
+int ufs_qcom_testbus_config(struct ufs_qcom_host *host);
+
static inline bool ufs_qcom_cap_qunipro(struct ufs_qcom_host *host)
{
if (host->caps & UFS_QCOM_CAP_QUNIPRO)
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c
index 7db9564f507d..9714f2a8b329 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.c
@@ -38,20 +38,7 @@
#include <linux/of.h>
#include "ufshcd.h"
-
-static const struct of_device_id ufs_of_match[];
-static struct ufs_hba_variant_ops *get_variant_ops(struct device *dev)
-{
- if (dev->of_node) {
- const struct of_device_id *match;
-
- match = of_match_node(ufs_of_match, dev->of_node);
- if (match)
- return (struct ufs_hba_variant_ops *)match->data;
- }
-
- return NULL;
-}
+#include "ufshcd-pltfrm.h"
static int ufshcd_parse_clock_info(struct ufs_hba *hba)
{
@@ -245,10 +232,11 @@ out:
* Returns 0 if successful
* Returns non-zero otherwise
*/
-static int ufshcd_pltfrm_suspend(struct device *dev)
+int ufshcd_pltfrm_suspend(struct device *dev)
{
return ufshcd_system_suspend(dev_get_drvdata(dev));
}
+EXPORT_SYMBOL_GPL(ufshcd_pltfrm_suspend);
/**
* ufshcd_pltfrm_resume - resume power management function
@@ -257,43 +245,47 @@ static int ufshcd_pltfrm_suspend(struct device *dev)
* Returns 0 if successful
* Returns non-zero otherwise
*/
-static int ufshcd_pltfrm_resume(struct device *dev)
+int ufshcd_pltfrm_resume(struct device *dev)
{
return ufshcd_system_resume(dev_get_drvdata(dev));
}
+EXPORT_SYMBOL_GPL(ufshcd_pltfrm_resume);
-static int ufshcd_pltfrm_runtime_suspend(struct device *dev)
+int ufshcd_pltfrm_runtime_suspend(struct device *dev)
{
return ufshcd_runtime_suspend(dev_get_drvdata(dev));
}
-static int ufshcd_pltfrm_runtime_resume(struct device *dev)
+EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_suspend);
+
+int ufshcd_pltfrm_runtime_resume(struct device *dev)
{
return ufshcd_runtime_resume(dev_get_drvdata(dev));
}
-static int ufshcd_pltfrm_runtime_idle(struct device *dev)
+EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_resume);
+
+int ufshcd_pltfrm_runtime_idle(struct device *dev)
{
return ufshcd_runtime_idle(dev_get_drvdata(dev));
}
-#else /* !CONFIG_PM */
-#define ufshcd_pltfrm_suspend NULL
-#define ufshcd_pltfrm_resume NULL
-#define ufshcd_pltfrm_runtime_suspend NULL
-#define ufshcd_pltfrm_runtime_resume NULL
-#define ufshcd_pltfrm_runtime_idle NULL
+EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_idle);
+
#endif /* CONFIG_PM */
-static void ufshcd_pltfrm_shutdown(struct platform_device *pdev)
+void ufshcd_pltfrm_shutdown(struct platform_device *pdev)
{
ufshcd_shutdown((struct ufs_hba *)platform_get_drvdata(pdev));
}
+EXPORT_SYMBOL_GPL(ufshcd_pltfrm_shutdown);
/**
- * ufshcd_pltfrm_probe - probe routine of the driver
+ * ufshcd_pltfrm_init - probe routine of the driver
* @pdev: pointer to Platform device handle
+ * @vops: pointer to variant ops
*
* Returns 0 on success, non-zero value on failure
*/
-static int ufshcd_pltfrm_probe(struct platform_device *pdev)
+int ufshcd_pltfrm_init(struct platform_device *pdev,
+ struct ufs_hba_variant_ops *vops)
{
struct ufs_hba *hba;
void __iomem *mmio_base;
@@ -321,19 +313,19 @@ static int ufshcd_pltfrm_probe(struct platform_device *pdev)
goto out;
}
- hba->vops = get_variant_ops(&pdev->dev);
+ hba->vops = vops;
err = ufshcd_parse_clock_info(hba);
if (err) {
dev_err(&pdev->dev, "%s: clock parse failed %d\n",
__func__, err);
- goto out;
+ goto dealloc_host;
}
err = ufshcd_parse_regulator_info(hba);
if (err) {
dev_err(&pdev->dev, "%s: regulator init failed %d\n",
__func__, err);
- goto out;
+ goto dealloc_host;
}
pm_runtime_set_active(&pdev->dev);
@@ -352,50 +344,12 @@ static int ufshcd_pltfrm_probe(struct platform_device *pdev)
out_disable_rpm:
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
+dealloc_host:
+ ufshcd_dealloc_host(hba);
out:
return err;
}
-
-/**
- * ufshcd_pltfrm_remove - remove platform driver routine
- * @pdev: pointer to platform device handle
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_pltfrm_remove(struct platform_device *pdev)
-{
- struct ufs_hba *hba = platform_get_drvdata(pdev);
-
- pm_runtime_get_sync(&(pdev)->dev);
- ufshcd_remove(hba);
- return 0;
-}
-
-static const struct of_device_id ufs_of_match[] = {
- { .compatible = "jedec,ufs-1.1"},
- {},
-};
-
-static const struct dev_pm_ops ufshcd_dev_pm_ops = {
- .suspend = ufshcd_pltfrm_suspend,
- .resume = ufshcd_pltfrm_resume,
- .runtime_suspend = ufshcd_pltfrm_runtime_suspend,
- .runtime_resume = ufshcd_pltfrm_runtime_resume,
- .runtime_idle = ufshcd_pltfrm_runtime_idle,
-};
-
-static struct platform_driver ufshcd_pltfrm_driver = {
- .probe = ufshcd_pltfrm_probe,
- .remove = ufshcd_pltfrm_remove,
- .shutdown = ufshcd_pltfrm_shutdown,
- .driver = {
- .name = "ufshcd",
- .pm = &ufshcd_dev_pm_ops,
- .of_match_table = ufs_of_match,
- },
-};
-
-module_platform_driver(ufshcd_pltfrm_driver);
+EXPORT_SYMBOL_GPL(ufshcd_pltfrm_init);
MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.h b/drivers/scsi/ufs/ufshcd-pltfrm.h
new file mode 100644
index 000000000000..df64c4180340
--- /dev/null
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.h
@@ -0,0 +1,41 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef UFSHCD_PLTFRM_H_
+#define UFSHCD_PLTFRM_H_
+
+#include "ufshcd.h"
+
+int ufshcd_pltfrm_init(struct platform_device *pdev,
+ struct ufs_hba_variant_ops *vops);
+void ufshcd_pltfrm_shutdown(struct platform_device *pdev);
+
+#ifdef CONFIG_PM
+
+int ufshcd_pltfrm_suspend(struct device *dev);
+int ufshcd_pltfrm_resume(struct device *dev);
+int ufshcd_pltfrm_runtime_suspend(struct device *dev);
+int ufshcd_pltfrm_runtime_resume(struct device *dev);
+int ufshcd_pltfrm_runtime_idle(struct device *dev);
+
+#else /* !CONFIG_PM */
+
+#define ufshcd_pltfrm_suspend NULL
+#define ufshcd_pltfrm_resume NULL
+#define ufshcd_pltfrm_runtime_suspend NULL
+#define ufshcd_pltfrm_runtime_resume NULL
+#define ufshcd_pltfrm_runtime_idle NULL
+
+#endif /* CONFIG_PM */
+
+#endif /* UFSHCD_PLTFRM_H_ */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9065eb451677..85cd2564c157 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -271,10 +271,8 @@ static inline u32 ufshcd_get_intr_mask(struct ufs_hba *hba)
*/
static inline u32 ufshcd_get_ufs_version(struct ufs_hba *hba)
{
- if (hba->quirks & UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION) {
- if (hba->vops && hba->vops->get_ufs_hci_version)
- return hba->vops->get_ufs_hci_version(hba);
- }
+ if (hba->quirks & UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION)
+ return ufshcd_vops_get_ufs_hci_version(hba);
return ufshcd_readl(hba, REG_UFS_VERSION);
}
@@ -627,6 +625,7 @@ start:
out:
return rc;
}
+EXPORT_SYMBOL_GPL(ufshcd_hold);
static void ufshcd_gate_work(struct work_struct *work)
{
@@ -714,6 +713,7 @@ void ufshcd_release(struct ufs_hba *hba)
__ufshcd_release(hba);
spin_unlock_irqrestore(hba->host->host_lock, flags);
}
+EXPORT_SYMBOL_GPL(ufshcd_release);
static ssize_t ufshcd_clkgate_delay_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -2473,9 +2473,8 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba,
dev_err(hba->dev,
"%s: power mode change failed %d\n", __func__, ret);
} else {
- if (hba->vops && hba->vops->pwr_change_notify)
- hba->vops->pwr_change_notify(hba,
- POST_CHANGE, NULL, pwr_mode);
+ ufshcd_vops_pwr_change_notify(hba, POST_CHANGE, NULL,
+ pwr_mode);
memcpy(&hba->pwr_info, pwr_mode,
sizeof(struct ufs_pa_layer_attr));
@@ -2495,10 +2494,10 @@ static int ufshcd_config_pwr_mode(struct ufs_hba *hba,
struct ufs_pa_layer_attr final_params = { 0 };
int ret;
- if (hba->vops && hba->vops->pwr_change_notify)
- hba->vops->pwr_change_notify(hba,
- PRE_CHANGE, desired_pwr_mode, &final_params);
- else
+ ret = ufshcd_vops_pwr_change_notify(hba, PRE_CHANGE,
+ desired_pwr_mode, &final_params);
+
+ if (ret)
memcpy(&final_params, desired_pwr_mode, sizeof(final_params));
ret = ufshcd_change_power_mode(hba, &final_params);
@@ -2647,8 +2646,7 @@ static int ufshcd_hba_enable(struct ufs_hba *hba)
/* UniPro link is disabled at this point */
ufshcd_set_link_off(hba);
- if (hba->vops && hba->vops->hce_enable_notify)
- hba->vops->hce_enable_notify(hba, PRE_CHANGE);
+ ufshcd_vops_hce_enable_notify(hba, PRE_CHANGE);
/* start controller initialization sequence */
ufshcd_hba_start(hba);
@@ -2681,8 +2679,7 @@ static int ufshcd_hba_enable(struct ufs_hba *hba)
/* enable UIC related interrupts */
ufshcd_enable_intr(hba, UFSHCD_UIC_MASK);
- if (hba->vops && hba->vops->hce_enable_notify)
- hba->vops->hce_enable_notify(hba, POST_CHANGE);
+ ufshcd_vops_hce_enable_notify(hba, POST_CHANGE);
return 0;
}
@@ -2735,8 +2732,7 @@ static int ufshcd_link_startup(struct ufs_hba *hba)
int retries = DME_LINKSTARTUP_RETRIES;
do {
- if (hba->vops && hba->vops->link_startup_notify)
- hba->vops->link_startup_notify(hba, PRE_CHANGE);
+ ufshcd_vops_link_startup_notify(hba, PRE_CHANGE);
ret = ufshcd_dme_link_startup(hba);
@@ -2767,11 +2763,9 @@ static int ufshcd_link_startup(struct ufs_hba *hba)
}
/* Include any host controller configuration via UIC commands */
- if (hba->vops && hba->vops->link_startup_notify) {
- ret = hba->vops->link_startup_notify(hba, POST_CHANGE);
- if (ret)
- goto out;
- }
+ ret = ufshcd_vops_link_startup_notify(hba, POST_CHANGE);
+ if (ret)
+ goto out;
ret = ufshcd_make_hba_operational(hba);
out:
@@ -4577,8 +4571,7 @@ static int __ufshcd_setup_clocks(struct ufs_hba *hba, bool on,
}
}
- if (hba->vops && hba->vops->setup_clocks)
- ret = hba->vops->setup_clocks(hba, on);
+ ret = ufshcd_vops_setup_clocks(hba, on);
out:
if (ret) {
list_for_each_entry(clki, head, list) {
@@ -4644,27 +4637,22 @@ static int ufshcd_variant_hba_init(struct ufs_hba *hba)
if (!hba->vops)
goto out;
- if (hba->vops->init) {
- err = hba->vops->init(hba);
- if (err)
- goto out;
- }
+ err = ufshcd_vops_init(hba);
+ if (err)
+ goto out;
- if (hba->vops->setup_regulators) {
- err = hba->vops->setup_regulators(hba, true);
- if (err)
- goto out_exit;
- }
+ err = ufshcd_vops_setup_regulators(hba, true);
+ if (err)
+ goto out_exit;
goto out;
out_exit:
- if (hba->vops->exit)
- hba->vops->exit(hba);
+ ufshcd_vops_exit(hba);
out:
if (err)
dev_err(hba->dev, "%s: variant %s init failed err %d\n",
- __func__, hba->vops ? hba->vops->name : "", err);
+ __func__, ufshcd_get_var_name(hba), err);
return err;
}
@@ -4673,14 +4661,11 @@ static void ufshcd_variant_hba_exit(struct ufs_hba *hba)
if (!hba->vops)
return;
- if (hba->vops->setup_clocks)
- hba->vops->setup_clocks(hba, false);
+ ufshcd_vops_setup_clocks(hba, false);
- if (hba->vops->setup_regulators)
- hba->vops->setup_regulators(hba, false);
+ ufshcd_vops_setup_regulators(hba, false);
- if (hba->vops->exit)
- hba->vops->exit(hba);
+ ufshcd_vops_exit(hba);
}
static int ufshcd_hba_init(struct ufs_hba *hba)
@@ -5057,17 +5042,13 @@ disable_clks:
* vendor specific host controller register space call them before the
* host clocks are ON.
*/
- if (hba->vops && hba->vops->suspend) {
- ret = hba->vops->suspend(hba, pm_op);
- if (ret)
- goto set_link_active;
- }
+ ret = ufshcd_vops_suspend(hba, pm_op);
+ if (ret)
+ goto set_link_active;
- if (hba->vops && hba->vops->setup_clocks) {
- ret = hba->vops->setup_clocks(hba, false);
- if (ret)
- goto vops_resume;
- }
+ ret = ufshcd_vops_setup_clocks(hba, false);
+ if (ret)
+ goto vops_resume;
if (!ufshcd_is_link_active(hba))
ufshcd_setup_clocks(hba, false);
@@ -5078,7 +5059,7 @@ disable_clks:
hba->clk_gating.state = CLKS_OFF;
/*
* Disable the host irq as host controller as there won't be any
- * host controller trasanction expected till resume.
+ * host controller transaction expected till resume.
*/
ufshcd_disable_irq(hba);
/* Put the host controller in low power mode if possible */
@@ -5086,8 +5067,7 @@ disable_clks:
goto out;
vops_resume:
- if (hba->vops && hba->vops->resume)
- hba->vops->resume(hba, pm_op);
+ ufshcd_vops_resume(hba, pm_op);
set_link_active:
ufshcd_vreg_set_hpm(hba);
if (ufshcd_is_link_hibern8(hba) && !ufshcd_uic_hibern8_exit(hba))
@@ -5143,11 +5123,9 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
* vendor specific host controller register space call them when the
* host clocks are ON.
*/
- if (hba->vops && hba->vops->resume) {
- ret = hba->vops->resume(hba, pm_op);
- if (ret)
- goto disable_vreg;
- }
+ ret = ufshcd_vops_resume(hba, pm_op);
+ if (ret)
+ goto disable_vreg;
if (ufshcd_is_link_hibern8(hba)) {
ret = ufshcd_uic_hibern8_exit(hba);
@@ -5188,8 +5166,7 @@ static int ufshcd_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
set_old_link_state:
ufshcd_link_state_transition(hba, old_link_state, 0);
vendor_suspend:
- if (hba->vops && hba->vops->suspend)
- hba->vops->suspend(hba, pm_op);
+ ufshcd_vops_suspend(hba, pm_op);
disable_vreg:
ufshcd_vreg_set_lpm(hba);
disable_irq_and_vops_clks:
@@ -5372,6 +5349,16 @@ void ufshcd_remove(struct ufs_hba *hba)
EXPORT_SYMBOL_GPL(ufshcd_remove);
/**
+ * ufshcd_dealloc_host - deallocate Host Bus Adapter (HBA)
+ * @hba: pointer to Host Bus Adapter (HBA)
+ */
+void ufshcd_dealloc_host(struct ufs_hba *hba)
+{
+ scsi_host_put(hba->host);
+}
+EXPORT_SYMBOL_GPL(ufshcd_dealloc_host);
+
+/**
* ufshcd_set_dma_mask - Set dma mask based on the controller
* addressing capability
* @hba: per adapter instance
@@ -5432,6 +5419,10 @@ static int ufshcd_scale_clks(struct ufs_hba *hba, bool scale_up)
if (!head || list_empty(head))
goto out;
+ ret = ufshcd_vops_clk_scale_notify(hba, scale_up, PRE_CHANGE);
+ if (ret)
+ return ret;
+
list_for_each_entry(clki, head, list) {
if (!IS_ERR_OR_NULL(clki->clk)) {
if (scale_up && clki->max_freq) {
@@ -5462,8 +5453,9 @@ static int ufshcd_scale_clks(struct ufs_hba *hba, bool scale_up)
dev_dbg(hba->dev, "%s: clk: %s, rate: %lu\n", __func__,
clki->name, clk_get_rate(clki->clk));
}
- if (hba->vops->clk_scale_notify)
- hba->vops->clk_scale_notify(hba);
+
+ ret = ufshcd_vops_clk_scale_notify(hba, scale_up, POST_CHANGE);
+
out:
return ret;
}
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index c40a0e78a6c4..2570d9477b37 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -223,8 +223,10 @@ struct ufs_clk_info {
bool enabled;
};
-#define PRE_CHANGE 0
-#define POST_CHANGE 1
+enum ufs_notify_change_status {
+ PRE_CHANGE,
+ POST_CHANGE,
+};
struct ufs_pa_layer_attr {
u32 gear_rx;
@@ -259,22 +261,28 @@ struct ufs_pwr_mode_info {
* to be set.
* @suspend: called during host controller PM callback
* @resume: called during host controller PM callback
+ * @dbg_register_dump: used to dump controller debug information
*/
struct ufs_hba_variant_ops {
const char *name;
int (*init)(struct ufs_hba *);
void (*exit)(struct ufs_hba *);
u32 (*get_ufs_hci_version)(struct ufs_hba *);
- void (*clk_scale_notify)(struct ufs_hba *);
- int (*setup_clocks)(struct ufs_hba *, bool);
+ int (*clk_scale_notify)(struct ufs_hba *, bool,
+ enum ufs_notify_change_status);
+ int (*setup_clocks)(struct ufs_hba *, bool);
int (*setup_regulators)(struct ufs_hba *, bool);
- int (*hce_enable_notify)(struct ufs_hba *, bool);
- int (*link_startup_notify)(struct ufs_hba *, bool);
+ int (*hce_enable_notify)(struct ufs_hba *,
+ enum ufs_notify_change_status);
+ int (*link_startup_notify)(struct ufs_hba *,
+ enum ufs_notify_change_status);
int (*pwr_change_notify)(struct ufs_hba *,
- bool, struct ufs_pa_layer_attr *,
+ enum ufs_notify_change_status status,
+ struct ufs_pa_layer_attr *,
struct ufs_pa_layer_attr *);
int (*suspend)(struct ufs_hba *, enum ufs_pm_op);
int (*resume)(struct ufs_hba *, enum ufs_pm_op);
+ void (*dbg_register_dump)(struct ufs_hba *hba);
};
/* clock gating state */
@@ -576,6 +584,7 @@ static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg)
}
int ufshcd_alloc_host(struct device *, struct ufs_hba **);
+void ufshcd_dealloc_host(struct ufs_hba *);
int ufshcd_init(struct ufs_hba * , void __iomem * , unsigned int);
void ufshcd_remove(struct ufs_hba *);
@@ -594,6 +603,27 @@ static inline void check_upiu_size(void)
GENERAL_UPIU_REQUEST_SIZE + QUERY_DESC_MAX_SIZE);
}
+/**
+ * ufshcd_set_variant - set variant specific data to the hba
+ * @hba - per adapter instance
+ * @variant - pointer to variant specific data
+ */
+static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
+{
+ BUG_ON(!hba);
+ hba->priv = variant;
+}
+
+/**
+ * ufshcd_get_variant - get variant specific data from the hba
+ * @hba - per adapter instance
+ */
+static inline void *ufshcd_get_variant(struct ufs_hba *hba)
+{
+ BUG_ON(!hba);
+ return hba->priv;
+}
+
extern int ufshcd_runtime_suspend(struct ufs_hba *hba);
extern int ufshcd_runtime_resume(struct ufs_hba *hba);
extern int ufshcd_runtime_idle(struct ufs_hba *hba);
@@ -653,4 +683,109 @@ static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
int ufshcd_hold(struct ufs_hba *hba, bool async);
void ufshcd_release(struct ufs_hba *hba);
+
+/* Wrapper functions for safely calling variant operations */
+static inline const char *ufshcd_get_var_name(struct ufs_hba *hba)
+{
+ if (hba->vops)
+ return hba->vops->name;
+ return "";
+}
+
+static inline int ufshcd_vops_init(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->init)
+ return hba->vops->init(hba);
+
+ return 0;
+}
+
+static inline void ufshcd_vops_exit(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->exit)
+ return hba->vops->exit(hba);
+}
+
+static inline u32 ufshcd_vops_get_ufs_hci_version(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->get_ufs_hci_version)
+ return hba->vops->get_ufs_hci_version(hba);
+
+ return ufshcd_readl(hba, REG_UFS_VERSION);
+}
+
+static inline int ufshcd_vops_clk_scale_notify(struct ufs_hba *hba,
+ bool up, enum ufs_notify_change_status status)
+{
+ if (hba->vops && hba->vops->clk_scale_notify)
+ return hba->vops->clk_scale_notify(hba, up, status);
+ return 0;
+}
+
+static inline int ufshcd_vops_setup_clocks(struct ufs_hba *hba, bool on)
+{
+ if (hba->vops && hba->vops->setup_clocks)
+ return hba->vops->setup_clocks(hba, on);
+ return 0;
+}
+
+static inline int ufshcd_vops_setup_regulators(struct ufs_hba *hba, bool status)
+{
+ if (hba->vops && hba->vops->setup_regulators)
+ return hba->vops->setup_regulators(hba, status);
+
+ return 0;
+}
+
+static inline int ufshcd_vops_hce_enable_notify(struct ufs_hba *hba,
+ bool status)
+{
+ if (hba->vops && hba->vops->hce_enable_notify)
+ return hba->vops->hce_enable_notify(hba, status);
+
+ return 0;
+}
+static inline int ufshcd_vops_link_startup_notify(struct ufs_hba *hba,
+ bool status)
+{
+ if (hba->vops && hba->vops->link_startup_notify)
+ return hba->vops->link_startup_notify(hba, status);
+
+ return 0;
+}
+
+static inline int ufshcd_vops_pwr_change_notify(struct ufs_hba *hba,
+ bool status,
+ struct ufs_pa_layer_attr *dev_max_params,
+ struct ufs_pa_layer_attr *dev_req_params)
+{
+ if (hba->vops && hba->vops->pwr_change_notify)
+ return hba->vops->pwr_change_notify(hba, status,
+ dev_max_params, dev_req_params);
+
+ return -ENOTSUPP;
+}
+
+static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)
+{
+ if (hba->vops && hba->vops->suspend)
+ return hba->vops->suspend(hba, op);
+
+ return 0;
+}
+
+static inline int ufshcd_vops_resume(struct ufs_hba *hba, enum ufs_pm_op op)
+{
+ if (hba->vops && hba->vops->resume)
+ return hba->vops->resume(hba, op);
+
+ return 0;
+}
+
+static inline void ufshcd_vops_dbg_register_dump(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->dbg_register_dump)
+ hba->vops->dbg_register_dump(hba);
+}
+
#endif /* End of Header */