Hi Pho, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on usb-serial/usb-next] [also build test WARNING on usb/usb-testing tty/tty-testing v5.12-rc6 next-20210401] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Pho-Tran/USB-serial-cp210x-Add-support-for-GPIOs-on-CP2108/20210405-141927 base: https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git usb-next config: x86_64-randconfig-s022-20210405 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-279-g6d5d9b42-dirty # https://github.com/0day-ci/linux/commit/a4658078c55d4396be894b30d3b94fd86b770f45 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Pho-Tran/USB-serial-cp210x-Add-support-for-GPIOs-on-CP2108/20210405-141927 git checkout a4658078c55d4396be894b30d3b94fd86b770f45 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/usb/serial/cp210x.c:1540:13: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [addressable] [usertype] buf @@ got unsigned short [usertype] @@ drivers/usb/serial/cp210x.c:1540:13: sparse: expected restricted __le16 [addressable] [usertype] buf drivers/usb/serial/cp210x.c:1540:13: sparse: got unsigned short [usertype] >> drivers/usb/serial/cp210x.c:1542:19: sparse: sparse: restricted __le16 degrades to integer >> drivers/usb/serial/cp210x.c:1581:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] wIndex @@ got int @@ drivers/usb/serial/cp210x.c:1581:24: sparse: expected restricted __le16 [usertype] wIndex drivers/usb/serial/cp210x.c:1581:24: sparse: got int >> drivers/usb/serial/cp210x.c:1587:57: sparse: sparse: incorrect type in argument 6 (different base types) @@ expected unsigned short [usertype] index @@ got restricted __le16 [usertype] wIndex @@ drivers/usb/serial/cp210x.c:1587:57: sparse: expected unsigned short [usertype] index drivers/usb/serial/cp210x.c:1587:57: sparse: got restricted __le16 [usertype] wIndex >> drivers/usb/serial/cp210x.c:1676:14: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] temp @@ got unsigned short [usertype] @@ drivers/usb/serial/cp210x.c:1676:14: sparse: expected restricted __le16 [usertype] temp drivers/usb/serial/cp210x.c:1676:14: sparse: got unsigned short [usertype] drivers/usb/serial/cp210x.c:1677:32: sparse: sparse: restricted __le16 degrades to integer drivers/usb/serial/cp210x.c:1678:14: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] temp @@ got unsigned short [usertype] @@ drivers/usb/serial/cp210x.c:1678:14: sparse: expected restricted __le16 [usertype] temp drivers/usb/serial/cp210x.c:1678:14: sparse: got unsigned short [usertype] drivers/usb/serial/cp210x.c:1679:23: sparse: sparse: restricted __le16 degrades to integer >> drivers/usb/serial/cp210x.c:1679:20: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] gpio_latch @@ got unsigned long @@ drivers/usb/serial/cp210x.c:1679:20: sparse: expected restricted __le16 [usertype] gpio_latch drivers/usb/serial/cp210x.c:1679:20: sparse: got unsigned long drivers/usb/serial/cp210x.c:1721:57: sparse: sparse: restricted __le16 degrades to integer vim +1540 drivers/usb/serial/cp210x.c 1496 1497 static int cp210x_gpio_get(struct gpio_chip *gc, unsigned int gpio) 1498 { 1499 struct usb_serial *serial = gpiochip_get_data(gc); 1500 struct cp210x_serial_private *priv = usb_get_serial_data(serial); 1501 u8 req_type = REQTYPE_DEVICE_TO_HOST; 1502 int result; 1503 __le16 buf; 1504 1505 result = usb_autopm_get_interface(serial->interface); 1506 if (result) 1507 return result; 1508 /* 1509 * This function will be read latch value of gpio and storage to buf(16bit) 1510 * where bit 0 is GPIO0, bit 1 is GPIO1, etc. Up to GPIOn where n is 1511 * total number of GPIO pins the interface supports. 1512 * Interfaces on CP2102N supports 7 GPIOs 1513 * Interfaces on CP2103 amd CP2104 supports 4 GPIOs 1514 * Enhanced interfaces on CP2105 support 3 GPIOs 1515 * Standard interfaces on CP2105 support 4 GPIOs 1516 * Interfaces on CP2108 supports 16 GPIOs 1517 */ 1518 switch (priv->partnum) { 1519 /* 1520 * Request type to Read_Latch of CP2105 and Cp2108 1521 * is 0xc1 <REQTYPE_INTERFACE_TO_HOST> 1522 */ 1523 case CP210X_PARTNUM_CP2108: 1524 req_type = REQTYPE_INTERFACE_TO_HOST; 1525 result = cp210x_read_vendor_block(serial, req_type, 1526 CP210X_READ_LATCH, &buf, sizeof(__le16)); 1527 break; 1528 case CP210X_PARTNUM_CP2105: 1529 req_type = REQTYPE_INTERFACE_TO_HOST; 1530 result = cp210x_read_vendor_block(serial, req_type, 1531 CP210X_READ_LATCH, &buf, sizeof(u8)); 1532 break; 1533 default: 1534 result = cp210x_read_vendor_block(serial, req_type, 1535 CP210X_READ_LATCH, &buf, sizeof(u8)); 1536 break; 1537 } 1538 if (result < 0) 1539 return result; > 1540 buf = le16_to_cpu(buf); 1541 usb_autopm_put_interface(serial->interface); > 1542 return !!(buf & BIT(gpio)); 1543 } 1544 1545 static void cp210x_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value) 1546 { 1547 struct usb_serial *serial = gpiochip_get_data(gc); 1548 struct cp210x_serial_private *priv = usb_get_serial_data(serial); 1549 struct cp210x_gpio_write buf; 1550 __le16 wIndex; 1551 int result; 1552 1553 if (value == 1) { 1554 buf.cp210x_8gpios.state = BIT(gpio); 1555 buf.cp210x_16gpios.state = cpu_to_le16(BIT(gpio)); 1556 } else { 1557 buf.cp210x_8gpios.state = 0; 1558 buf.cp210x_16gpios.state = 0; 1559 } 1560 buf.cp210x_8gpios.mask = BIT(gpio); 1561 buf.cp210x_16gpios.mask = cpu_to_le16(BIT(gpio)); 1562 1563 result = usb_autopm_get_interface(serial->interface); 1564 if (result) 1565 goto out; 1566 1567 switch (priv->partnum) { 1568 case CP210X_PARTNUM_CP2108: 1569 result = cp210x_write_vendor_block(serial, 1570 REQTYPE_HOST_TO_INTERFACE, 1571 CP210X_WRITE_LATCH, &buf.cp210x_16gpios, 1572 sizeof(buf.cp210x_16gpios)); 1573 break; 1574 case CP210X_PARTNUM_CP2105: 1575 result = cp210x_write_vendor_block(serial, 1576 REQTYPE_HOST_TO_INTERFACE, 1577 CP210X_WRITE_LATCH, &buf.cp210x_8gpios, 1578 sizeof(buf.cp210x_8gpios)); 1579 break; 1580 default: > 1581 wIndex = buf.cp210x_8gpios.state << 8 | buf.cp210x_8gpios.mask; 1582 result = usb_control_msg(serial->dev, 1583 usb_sndctrlpipe(serial->dev, 0), 1584 CP210X_VENDOR_SPECIFIC, 1585 REQTYPE_HOST_TO_DEVICE, 1586 CP210X_WRITE_LATCH, > 1587 wIndex, 1588 NULL, 0, USB_CTRL_SET_TIMEOUT); 1589 break; 1590 } 1591 usb_autopm_put_interface(serial->interface); 1592 1593 out: 1594 if (result < 0) { 1595 dev_err(&serial->interface->dev, "failed to set GPIO value: %d\n", 1596 result); 1597 } 1598 } 1599 1600 static int cp210x_gpio_direction_get(struct gpio_chip *gc, unsigned int gpio) 1601 { 1602 struct usb_serial *serial = gpiochip_get_data(gc); 1603 struct cp210x_serial_private *priv = usb_get_serial_data(serial); 1604 1605 return priv->gpio_input & BIT(gpio); 1606 } 1607 1608 static int cp210x_gpio_direction_input(struct gpio_chip *gc, unsigned int gpio) 1609 { 1610 struct usb_serial *serial = gpiochip_get_data(gc); 1611 struct cp210x_serial_private *priv = usb_get_serial_data(serial); 1612 1613 if (priv->partnum == CP210X_PARTNUM_CP2105) { 1614 /* hardware does not support an input mode */ 1615 return -ENOTSUPP; 1616 } 1617 1618 /* push-pull pins cannot be changed to be inputs */ 1619 if (priv->gpio_pushpull & BIT(gpio)) 1620 return -EINVAL; 1621 1622 /* make sure to release pin if it is being driven low */ 1623 cp210x_gpio_set(gc, gpio, 1); 1624 1625 priv->gpio_input |= BIT(gpio); 1626 1627 return 0; 1628 } 1629 1630 static int cp210x_gpio_direction_output(struct gpio_chip *gc, unsigned int gpio, 1631 int value) 1632 { 1633 struct usb_serial *serial = gpiochip_get_data(gc); 1634 struct cp210x_serial_private *priv = usb_get_serial_data(serial); 1635 1636 priv->gpio_input &= ~BIT(gpio); 1637 cp210x_gpio_set(gc, gpio, value); 1638 1639 return 0; 1640 } 1641 1642 static int cp210x_gpio_set_config(struct gpio_chip *gc, unsigned int gpio, 1643 unsigned long config) 1644 { 1645 struct usb_serial *serial = gpiochip_get_data(gc); 1646 struct cp210x_serial_private *priv = usb_get_serial_data(serial); 1647 enum pin_config_param param = pinconf_to_config_param(config); 1648 1649 /* Succeed only if in correct mode (this can't be set at runtime) */ 1650 if ((param == PIN_CONFIG_DRIVE_PUSH_PULL) && 1651 (priv->gpio_pushpull & BIT(gpio))) 1652 return 0; 1653 1654 if ((param == PIN_CONFIG_DRIVE_OPEN_DRAIN) && 1655 !(priv->gpio_pushpull & BIT(gpio))) 1656 return 0; 1657 1658 return -ENOTSUPP; 1659 } 1660 1661 static int cp2108_gpio_init(struct usb_serial *serial) 1662 { 1663 struct cp210x_serial_private *priv = usb_get_serial_data(serial); 1664 struct cp210x_quad_port_config config; 1665 __le16 gpio_latch; 1666 __le16 temp; 1667 int result; 1668 u8 i; 1669 1670 result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST, 1671 CP210X_GET_PORTCONFIG, &config, 1672 sizeof(config)); 1673 if (result < 0) 1674 return result; 1675 priv->gc.ngpio = 16; > 1676 temp = le16_to_cpu(config.reset_state.gpio_mode_PB1); 1677 priv->gpio_pushpull = (temp & CP2108_GPIO_MODE_MASK) >> CP2108_GPIO_MODE_OFFSET; 1678 temp = le16_to_cpu(config.reset_state.gpio_latch_PB1); > 1679 gpio_latch = (temp & CP2108_GPIO_MODE_MASK) >> CP2108_GPIO_MODE_OFFSET; 1680 /* 1681 * Mark all pins which are not in GPIO mode 1682 * Refer to table 9.1: GPIO Mode alternate Functions on CP2108 datasheet: 1683 * https://www.silabs.com/documents/public/data-sheets/cp2108-datasheet.pdf 1684 * Alternate Functions of GPIO0 to GPIO3 is determine by enhancedfxn_IFC[0] 1685 * and the same for other pins, enhancedfxn_IFC[1]: GPIO4 to GPIO7, 1686 * enhancedfxn_IFC[2]: GPIO8 to GPIO11, enhancedfxn_IFC[3]: GPIO12 to GPIO15. 1687 */ 1688 for (i = 0; i < 4; i++) { 1689 switch (config.enhancedfxn_IFC[i]) { 1690 case EF_IFC_GPIO_TXLED: 1691 priv->gpio_altfunc |= BIT(i * 4); 1692 break; 1693 case EF_IFC_GPIO_RXLED: 1694 priv->gpio_altfunc |= BIT((i * 4) + 1); 1695 break; 1696 case EF_IFC_GPIO_RS485_LOGIC: 1697 case EF_IFC_GPIO_RS485: 1698 priv->gpio_altfunc |= BIT((i * 4) + 2); 1699 break; 1700 case EF_IFC_GPIO_CLOCK: 1701 priv->gpio_altfunc |= BIT((i * 4) + 3); 1702 break; 1703 case EF_IFC_DYNAMIC_SUSPEND: 1704 priv->gpio_altfunc |= BIT(i * 4); 1705 priv->gpio_altfunc |= BIT((i * 4) + 1); 1706 priv->gpio_altfunc |= BIT((i * 4) + 2); 1707 priv->gpio_altfunc |= BIT((i * 4) + 3); 1708 break; 1709 } 1710 } 1711 /* 1712 * Like CP2102N, CP2108 has also no strict input and output pin 1713 * modes. 1714 * Do the same input mode emulation as CP2102N. 1715 */ 1716 for (i = 0; i < priv->gc.ngpio; ++i) { 1717 /* 1718 * Set direction to "input" iff pin is open-drain and reset 1719 * value is 1. 1720 */ 1721 if (!(priv->gpio_pushpull & BIT(i)) && (gpio_latch & BIT(i))) 1722 priv->gpio_input |= BIT(i); 1723 } 1724 1725 return 0; 1726 } 1727 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
