diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c index 61bcc17098d7..a52645566d0d 100644 --- a/drivers/net/phy/meson-gxl.c +++ b/drivers/net/phy/meson-gxl.c @@ -50,69 +50,100 @@ #define FR_PLL_DIV0 0x1c #define FR_PLL_DIV1 0x1d +static int meson_gxl_open_banks(struct phy_device *phydev) +{ + int ret; + + /* Enable Analog and DSP register Bank access by + * toggling TSTCNTL_TEST_MODE bit in the TSTCNTL register + */ + ret = phy_write(phydev, TSTCNTL, 0); + if (ret) + return ret; + ret = phy_write(phydev, TSTCNTL, TSTCNTL_TEST_MODE); + if (ret) + return ret; + ret = phy_write(phydev, TSTCNTL, 0); + if (ret) + return ret; + return phy_write(phydev, TSTCNTL, TSTCNTL_TEST_MODE); +} + +static void meson_gxl_close_banks(struct phy_device *phydev) +{ + phy_write(phydev, TSTCNTL, 0); +} + +static int meson_gxl_read_reg(struct phy_device *phydev, + unsigned int bank, unsigned int reg) +{ + int ret; + + ret = meson_gxl_open_banks(phydev); + if (ret) + goto out; + + ret = phy_write(phydev, TSTCNTL, TSTCNTL_READ | + FIELD_PREP(TSTCNTL_REG_BANK_SEL, bank) | + TSTCNTL_TEST_MODE | + FIELD_PREP(TSTCNTL_READ_ADDRESS, reg)); + if (ret) + goto out; + + ret = phy_read(phydev, TSTREAD1); +out: + /* Close the bank access on our way out */ + meson_gxl_close_banks(phydev); + return ret; +} + +static int meson_gxl_write_reg(struct phy_device *phydev, + unsigned int bank, unsigned int reg, + uint16_t value) +{ + int ret; + + ret = meson_gxl_open_banks(phydev); + if (ret) + goto out; + + ret = phy_write(phydev, TSTWRITE, value); + if (ret) + goto out; + + ret = phy_write(phydev, TSTCNTL, TSTCNTL_WRITE | + FIELD_PREP(TSTCNTL_REG_BANK_SEL, bank) | + TSTCNTL_TEST_MODE | + FIELD_PREP(TSTCNTL_WRITE_ADDRESS, reg)); + +out: + /* Close the bank access on our way out */ + meson_gxl_close_banks(phydev); + return ret; +} + static int meson_gxl_config_init(struct phy_device *phydev) { int ret; - /* Enable Analog and DSP register Bank access by */ - ret = phy_write(phydev, TSTCNTL, 0); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, TSTCNTL_TEST_MODE); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, 0); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, TSTCNTL_TEST_MODE); - if (ret) - return ret; - /* Write CONFIG_A6*/ - ret = phy_write(phydev, TSTWRITE, 0x8e0d); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, - TSTCNTL_WRITE - | FIELD_PREP(TSTCNTL_REG_BANK_SEL, BANK_ANALOG_DSP) - | TSTCNTL_TEST_MODE - | FIELD_PREP(TSTCNTL_WRITE_ADDRESS, A6_CONFIG_REG)); + ret = meson_gxl_write_reg(phydev, BANK_ANALOG_DSP, A6_CONFIG_REG, + 0x8e0d); if (ret) return ret; /* Enable fractional PLL */ - ret = phy_write(phydev, TSTWRITE, 0x0005); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, - TSTCNTL_WRITE - | FIELD_PREP(TSTCNTL_REG_BANK_SEL, BANK_BIST) - | TSTCNTL_TEST_MODE - | FIELD_PREP(TSTCNTL_WRITE_ADDRESS, FR_PLL_CONTROL)); + ret = meson_gxl_write_reg(phydev, BANK_BIST, FR_PLL_CONTROL, 0x5); if (ret) return ret; /* Program fraction FR_PLL_DIV1 */ - ret = phy_write(phydev, TSTWRITE, 0x029a); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, - TSTCNTL_WRITE - | FIELD_PREP(TSTCNTL_REG_BANK_SEL, BANK_BIST) - | TSTCNTL_TEST_MODE - | FIELD_PREP(TSTCNTL_WRITE_ADDRESS, FR_PLL_DIV1)); + ret = meson_gxl_write_reg(phydev, BANK_BIST, FR_PLL_DIV1, 0x029a); if (ret) return ret; /* Program fraction FR_PLL_DIV1 */ - ret = phy_write(phydev, TSTWRITE, 0xaaaa); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, - TSTCNTL_WRITE - | FIELD_PREP(TSTCNTL_REG_BANK_SEL, BANK_BIST) - | TSTCNTL_TEST_MODE - | FIELD_PREP(TSTCNTL_WRITE_ADDRESS, FR_PLL_DIV0)); + ret = meson_gxl_write_reg(phydev, BANK_BIST, FR_PLL_DIV0, 0xaaaa); if (ret) return ret; @@ -146,31 +177,8 @@ static int meson_gxl_read_status(struct phy_device *phydev) else if (!ret) goto read_status_continue; - /* Need to access WOL bank, make sure the access is open */ - ret = phy_write(phydev, TSTCNTL, 0); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, TSTCNTL_TEST_MODE); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, 0); - if (ret) - return ret; - ret = phy_write(phydev, TSTCNTL, TSTCNTL_TEST_MODE); - if (ret) - return ret; - - /* Request LPI_STATUS WOL register */ - ret = phy_write(phydev, TSTCNTL, - TSTCNTL_READ - | FIELD_PREP(TSTCNTL_REG_BANK_SEL, BANK_WOL) - | TSTCNTL_TEST_MODE - | FIELD_PREP(TSTCNTL_READ_ADDRESS, LPI_STATUS)); - if (ret) - return ret; - - /* Read LPI_STATUS value */ - wol = phy_read(phydev, TSTREAD1); + /* Aneg is done, let's check everything is fine */ + wol = meson_gxl_read_reg(phydev, BANK_WOL, LPI_STATUS); if (wol < 0) return wol;