diff options
Diffstat (limited to 'drivers/thunderbolt/usb4.c')
| -rw-r--r-- | drivers/thunderbolt/usb4.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index 78b06e922fda..de480bf2a53d 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -52,6 +52,10 @@ enum usb4_ba_index { #define USB4_BA_VALUE_MASK GENMASK(31, 16) #define USB4_BA_VALUE_SHIFT 16 +/* Delays in us used with usb4_port_wait_for_bit() */ +#define USB4_PORT_DELAY 50 +#define USB4_PORT_SB_DELAY 5000 + static int usb4_native_switch_op(struct tb_switch *sw, u16 opcode, u32 *metadata, u8 *status, const void *tx_data, size_t tx_dwords, @@ -1245,7 +1249,7 @@ void usb4_port_unconfigure_xdomain(struct tb_port *port) } static int usb4_port_wait_for_bit(struct tb_port *port, u32 offset, u32 bit, - u32 value, int timeout_msec) + u32 value, int timeout_msec, unsigned long delay_usec) { ktime_t timeout = ktime_add_ms(ktime_get(), timeout_msec); @@ -1260,7 +1264,7 @@ static int usb4_port_wait_for_bit(struct tb_port *port, u32 offset, u32 bit, if ((val & bit) == value) return 0; - usleep_range(50, 100); + fsleep(delay_usec); } while (ktime_before(ktime_get(), timeout)); return -ETIMEDOUT; @@ -1308,7 +1312,7 @@ static int usb4_port_sb_read(struct tb_port *port, enum usb4_sb_target target, return ret; ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1, - PORT_CS_1_PND, 0, 500); + PORT_CS_1_PND, 0, 500, USB4_PORT_SB_DELAY); if (ret) return ret; @@ -1355,7 +1359,7 @@ static int usb4_port_sb_write(struct tb_port *port, enum usb4_sb_target target, return ret; ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1, - PORT_CS_1_PND, 0, 500); + PORT_CS_1_PND, 0, 500, USB4_PORT_SB_DELAY); if (ret) return ret; @@ -1410,6 +1414,8 @@ static int usb4_port_sb_op(struct tb_port *port, enum usb4_sb_target target, if (val != opcode) return usb4_port_sb_opcode_err_to_errno(val); + + fsleep(USB4_PORT_SB_DELAY); } while (ktime_before(ktime_get(), timeout)); return -ETIMEDOUT; @@ -1591,13 +1597,14 @@ int usb4_port_asym_start(struct tb_port *port) * port started the symmetry transition. */ ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_19, - PORT_CS_19_START_ASYM, 0, 1000); + PORT_CS_19_START_ASYM, 0, 1000, + USB4_PORT_DELAY); if (ret) return ret; /* Then wait for the transtion to be completed */ return usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_18, - PORT_CS_18_TIP, 0, 5000); + PORT_CS_18_TIP, 0, 5000, USB4_PORT_DELAY); } /** @@ -2123,7 +2130,8 @@ static int usb4_usb3_port_cm_request(struct tb_port *port, bool request) */ val &= ADP_USB3_CS_2_CMR; return usb4_port_wait_for_bit(port, port->cap_adap + ADP_USB3_CS_1, - ADP_USB3_CS_1_HCA, val, 1500); + ADP_USB3_CS_1_HCA, val, 1500, + USB4_PORT_DELAY); } static inline int usb4_usb3_port_set_cm_request(struct tb_port *port) |