diff options
Diffstat (limited to 'drivers/phy/ti/phy-tusb1210.c')
| -rw-r--r-- | drivers/phy/ti/phy-tusb1210.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/phy/ti/phy-tusb1210.c b/drivers/phy/ti/phy-tusb1210.c index d8d0cc11d187..a63213f5972a 100644 --- a/drivers/phy/ti/phy-tusb1210.c +++ b/drivers/phy/ti/phy-tusb1210.c @@ -7,15 +7,16 @@ * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com> */ #include <linux/module.h> +#include <linux/bitfield.h> #include <linux/ulpi/driver.h> #include <linux/ulpi/regs.h> #include <linux/gpio/consumer.h> #include <linux/phy/ulpi_phy.h> #define TUSB1210_VENDOR_SPECIFIC2 0x80 -#define TUSB1210_VENDOR_SPECIFIC2_IHSTX_SHIFT 0 -#define TUSB1210_VENDOR_SPECIFIC2_ZHSDRV_SHIFT 4 -#define TUSB1210_VENDOR_SPECIFIC2_DP_SHIFT 6 +#define TUSB1210_VENDOR_SPECIFIC2_IHSTX_MASK GENMASK(3, 0) +#define TUSB1210_VENDOR_SPECIFIC2_ZHSDRV_MASK GENMASK(5, 4) +#define TUSB1210_VENDOR_SPECIFIC2_DP_MASK BIT(6) struct tusb1210 { struct ulpi *ulpi; @@ -118,22 +119,22 @@ static int tusb1210_probe(struct ulpi *ulpi) * diagram optimization and DP/DM swap. */ + reg = ulpi_read(ulpi, TUSB1210_VENDOR_SPECIFIC2); + /* High speed output drive strength configuration */ - device_property_read_u8(&ulpi->dev, "ihstx", &val); - reg = val << TUSB1210_VENDOR_SPECIFIC2_IHSTX_SHIFT; + if (!device_property_read_u8(&ulpi->dev, "ihstx", &val)) + u8p_replace_bits(®, val, (u8)TUSB1210_VENDOR_SPECIFIC2_IHSTX_MASK); /* High speed output impedance configuration */ - device_property_read_u8(&ulpi->dev, "zhsdrv", &val); - reg |= val << TUSB1210_VENDOR_SPECIFIC2_ZHSDRV_SHIFT; + if (!device_property_read_u8(&ulpi->dev, "zhsdrv", &val)) + u8p_replace_bits(®, val, (u8)TUSB1210_VENDOR_SPECIFIC2_ZHSDRV_MASK); /* DP/DM swap control */ - device_property_read_u8(&ulpi->dev, "datapolarity", &val); - reg |= val << TUSB1210_VENDOR_SPECIFIC2_DP_SHIFT; + if (!device_property_read_u8(&ulpi->dev, "datapolarity", &val)) + u8p_replace_bits(®, val, (u8)TUSB1210_VENDOR_SPECIFIC2_DP_MASK); - if (reg) { - ulpi_write(ulpi, TUSB1210_VENDOR_SPECIFIC2, reg); - tusb->vendor_specific2 = reg; - } + ulpi_write(ulpi, TUSB1210_VENDOR_SPECIFIC2, reg); + tusb->vendor_specific2 = reg; tusb->phy = ulpi_phy_create(ulpi, &phy_ops); if (IS_ERR(tusb->phy)) |