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path: root/drivers/ufs/host/ufs-exynos.c
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Diffstat (limited to 'drivers/ufs/host/ufs-exynos.c')
-rw-r--r--drivers/ufs/host/ufs-exynos.c116
1 files changed, 83 insertions, 33 deletions
diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index 98505c68103d..6bd1532bfd1d 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -34,7 +34,7 @@
* Exynos's Vendor specific registers for UFSHCI
*/
#define HCI_TXPRDT_ENTRY_SIZE 0x00
-#define PRDT_PREFECT_EN BIT(31)
+#define PRDT_PREFETCH_EN BIT(31)
#define HCI_RXPRDT_ENTRY_SIZE 0x04
#define HCI_1US_TO_CNT_VAL 0x0C
#define CNT_VAL_1US_MASK 0x3FF
@@ -86,11 +86,16 @@
UIC_TRANSPORT_NO_CONNECTION_RX |\
UIC_TRANSPORT_BAD_TC)
-/* FSYS UFS Shareability */
-#define UFS_WR_SHARABLE BIT(2)
-#define UFS_RD_SHARABLE BIT(1)
-#define UFS_SHARABLE (UFS_WR_SHARABLE | UFS_RD_SHARABLE)
-#define UFS_SHAREABILITY_OFFSET 0x710
+/* UFS Shareability */
+#define UFS_EXYNOSAUTO_WR_SHARABLE BIT(2)
+#define UFS_EXYNOSAUTO_RD_SHARABLE BIT(1)
+#define UFS_EXYNOSAUTO_SHARABLE (UFS_EXYNOSAUTO_WR_SHARABLE | \
+ UFS_EXYNOSAUTO_RD_SHARABLE)
+#define UFS_GS101_WR_SHARABLE BIT(1)
+#define UFS_GS101_RD_SHARABLE BIT(0)
+#define UFS_GS101_SHARABLE (UFS_GS101_WR_SHARABLE | \
+ UFS_GS101_RD_SHARABLE)
+#define UFS_SHAREABILITY_OFFSET 0x710
/* Multi-host registers */
#define MHCTRL 0xC4
@@ -198,20 +203,15 @@ static inline void exynos_ufs_ungate_clks(struct exynos_ufs *ufs)
exynos_ufs_ctrl_clkstop(ufs, false);
}
-static int exynos7_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs)
-{
- return 0;
-}
-
-static int exynosauto_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs)
+static int exynos_ufs_shareability(struct exynos_ufs *ufs)
{
struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
/* IO Coherency setting */
if (ufs->sysreg) {
return regmap_update_bits(ufs->sysreg,
- ufs->shareability_reg_offset,
- UFS_SHARABLE, UFS_SHARABLE);
+ ufs->iocc_offset,
+ ufs->iocc_mask, ufs->iocc_val);
}
attr->tx_dif_p_nsec = 3200000;
@@ -219,6 +219,21 @@ static int exynosauto_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs)
return 0;
}
+static int gs101_ufs_drv_init(struct exynos_ufs *ufs)
+{
+ struct ufs_hba *hba = ufs->hba;
+
+ /* Enable WriteBooster */
+ hba->caps |= UFSHCD_CAP_WB_EN;
+
+ return exynos_ufs_shareability(ufs);
+}
+
+static int exynosauto_ufs_drv_init(struct exynos_ufs *ufs)
+{
+ return exynos_ufs_shareability(ufs);
+}
+
static int exynosauto_ufs_post_hce_enable(struct exynos_ufs *ufs)
{
struct ufs_hba *hba = ufs->hba;
@@ -915,6 +930,12 @@ static int exynos_ufs_phy_init(struct exynos_ufs *ufs)
}
phy_set_bus_width(generic_phy, ufs->avail_ln_rx);
+
+ if (generic_phy->power_count) {
+ phy_power_off(generic_phy);
+ phy_exit(generic_phy);
+ }
+
ret = phy_init(generic_phy);
if (ret) {
dev_err(hba->dev, "%s: phy init failed, ret = %d\n",
@@ -1007,9 +1028,14 @@ static int exynos_ufs_pre_link(struct ufs_hba *hba)
exynos_ufs_config_intr(ufs, DFES_DEF_L4_ERRS, UNIPRO_L4);
exynos_ufs_set_unipro_pclk_div(ufs);
+ exynos_ufs_setup_clocks(hba, true, PRE_CHANGE);
+
/* unipro */
exynos_ufs_config_unipro(ufs);
+ if (ufs->drv_data->pre_link)
+ ufs->drv_data->pre_link(ufs);
+
/* m-phy */
exynos_ufs_phy_init(ufs);
if (!(ufs->opts & EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR)) {
@@ -1017,11 +1043,6 @@ static int exynos_ufs_pre_link(struct ufs_hba *hba)
exynos_ufs_config_phy_cap_attr(ufs);
}
- exynos_ufs_setup_clocks(hba, true, PRE_CHANGE);
-
- if (ufs->drv_data->pre_link)
- ufs->drv_data->pre_link(ufs);
-
return 0;
}
@@ -1045,15 +1066,20 @@ static int exynos_ufs_post_link(struct ufs_hba *hba)
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
struct phy *generic_phy = ufs->phy;
struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
+ u32 val = ilog2(DATA_UNIT_SIZE);
exynos_ufs_establish_connt(ufs);
exynos_ufs_fit_aggr_timeout(ufs);
hci_writel(ufs, 0xa, HCI_DATA_REORDER);
- hci_writel(ufs, ilog2(DATA_UNIT_SIZE), HCI_TXPRDT_ENTRY_SIZE);
+
+ if (hba->caps & UFSHCD_CAP_CRYPTO)
+ val |= PRDT_PREFETCH_EN;
+ hci_writel(ufs, val, HCI_TXPRDT_ENTRY_SIZE);
+
hci_writel(ufs, ilog2(DATA_UNIT_SIZE), HCI_RXPRDT_ENTRY_SIZE);
- hci_writel(ufs, (1 << hba->nutrs) - 1, HCI_UTRL_NEXUS_TYPE);
- hci_writel(ufs, (1 << hba->nutmrs) - 1, HCI_UTMRL_NEXUS_TYPE);
+ hci_writel(ufs, BIT(hba->nutrs) - 1, HCI_UTRL_NEXUS_TYPE);
+ hci_writel(ufs, BIT(hba->nutmrs) - 1, HCI_UTMRL_NEXUS_TYPE);
hci_writel(ufs, 0xf, HCI_AXIDMA_RWDATA_BURST_LEN);
if (ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB)
@@ -1126,12 +1152,22 @@ static int exynos_ufs_parse_dt(struct device *dev, struct exynos_ufs *ufs)
ufs->sysreg = NULL;
else {
if (of_property_read_u32_index(np, "samsung,sysreg", 1,
- &ufs->shareability_reg_offset)) {
+ &ufs->iocc_offset)) {
dev_warn(dev, "can't get an offset from sysreg. Set to default value\n");
- ufs->shareability_reg_offset = UFS_SHAREABILITY_OFFSET;
+ ufs->iocc_offset = UFS_SHAREABILITY_OFFSET;
}
}
+ ufs->iocc_mask = ufs->drv_data->iocc_mask;
+ /*
+ * no 'dma-coherent' property means the descriptors are
+ * non-cacheable so iocc shareability should be disabled.
+ */
+ if (of_dma_is_coherent(dev->of_node))
+ ufs->iocc_val = ufs->iocc_mask;
+ else
+ ufs->iocc_val = 0;
+
ufs->pclk_avail_min = PCLK_AVAIL_MIN;
ufs->pclk_avail_max = PCLK_AVAIL_MAX;
@@ -1432,7 +1468,7 @@ static int exynos_ufs_init(struct ufs_hba *hba)
exynos_ufs_fmp_init(hba, ufs);
if (ufs->drv_data->drv_init) {
- ret = ufs->drv_data->drv_init(dev, ufs);
+ ret = ufs->drv_data->drv_init(ufs);
if (ret) {
dev_err(dev, "failed to init drv-data\n");
goto out;
@@ -1454,6 +1490,14 @@ out:
return ret;
}
+static void exynos_ufs_exit(struct ufs_hba *hba)
+{
+ struct exynos_ufs *ufs = ufshcd_get_variant(hba);
+
+ phy_power_off(ufs->phy);
+ phy_exit(ufs->phy);
+}
+
static int exynos_ufs_host_reset(struct ufs_hba *hba)
{
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
@@ -1643,6 +1687,12 @@ static void exynos_ufs_hibern8_notify(struct ufs_hba *hba,
}
}
+static int gs101_ufs_suspend(struct exynos_ufs *ufs)
+{
+ hci_writel(ufs, 0 << 0, HCI_GPIO_OUT);
+ return 0;
+}
+
static int exynos_ufs_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
enum ufs_notify_change_status status)
{
@@ -1651,6 +1701,9 @@ static int exynos_ufs_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
if (status == PRE_CHANGE)
return 0;
+ if (ufs->drv_data->suspend)
+ ufs->drv_data->suspend(ufs);
+
if (!ufshcd_is_link_active(hba))
phy_power_off(ufs->phy);
@@ -1922,6 +1975,7 @@ static int gs101_ufs_pre_pwr_change(struct exynos_ufs *ufs,
static const struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
.name = "exynos_ufs",
.init = exynos_ufs_init,
+ .exit = exynos_ufs_exit,
.hce_enable_notify = exynos_ufs_hce_enable_notify,
.link_startup_notify = exynos_ufs_link_startup_notify,
.pwr_change_notify = exynos_ufs_pwr_change_notify,
@@ -1960,13 +2014,7 @@ static int exynos_ufs_probe(struct platform_device *pdev)
static void exynos_ufs_remove(struct platform_device *pdev)
{
- struct ufs_hba *hba = platform_get_drvdata(pdev);
- struct exynos_ufs *ufs = ufshcd_get_variant(hba);
-
ufshcd_pltfrm_remove(pdev);
-
- phy_power_off(ufs->phy);
- phy_exit(ufs->phy);
}
static struct exynos_ufs_uic_attr exynos7_uic_attr = {
@@ -2005,6 +2053,7 @@ static const struct exynos_ufs_drv_data exynosauto_ufs_drvs = {
.opts = EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR |
EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
+ .iocc_mask = UFS_EXYNOSAUTO_SHARABLE,
.drv_init = exynosauto_ufs_drv_init,
.post_hce_enable = exynosauto_ufs_post_hce_enable,
.pre_link = exynosauto_ufs_pre_link,
@@ -2038,7 +2087,6 @@ static const struct exynos_ufs_drv_data exynos_ufs_drvs = {
EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX |
EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB |
EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER,
- .drv_init = exynos7_ufs_drv_init,
.pre_link = exynos7_ufs_pre_link,
.post_link = exynos7_ufs_post_link,
.pre_pwr_change = exynos7_ufs_pre_pwr_change,
@@ -2128,10 +2176,12 @@ static const struct exynos_ufs_drv_data gs101_ufs_drvs = {
EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR |
EXYNOS_UFS_OPT_UFSPR_SECURE |
EXYNOS_UFS_OPT_TIMER_TICK_SELECT,
- .drv_init = exynosauto_ufs_drv_init,
+ .iocc_mask = UFS_GS101_SHARABLE,
+ .drv_init = gs101_ufs_drv_init,
.pre_link = gs101_ufs_pre_link,
.post_link = gs101_ufs_post_link,
.pre_pwr_change = gs101_ufs_pre_pwr_change,
+ .suspend = gs101_ufs_suspend,
};
static const struct of_device_id exynos_ufs_of_match[] = {
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-30 08:16:15 +0300