[PATCH 7/8] phy: allwinner: phy-sun6i-mipi-dphy: Add a variant power-on hook

From: Samuel Holland
Date: Fri Aug 12 2022 - 03:56:39 EST


The A100 variant uses the same values for the timing registers, and it
uses the same final power-on sequence, but it needs a different analog
register configuration in the middle. Support this by moving the
variant-specific parts to a hook provided by the variant.

Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
---

drivers/phy/allwinner/phy-sun6i-mipi-dphy.c | 59 ++++++++++++---------
1 file changed, 35 insertions(+), 24 deletions(-)

diff --git a/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c b/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c
index 9698d68d0db7..6a1993c434e8 100644
--- a/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c
+++ b/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c
@@ -114,7 +114,10 @@ enum sun6i_dphy_direction {
SUN6I_DPHY_DIRECTION_RX,
};

+struct sun6i_dphy;
+
struct sun6i_dphy_variant {
+ void (*tx_power_on)(struct sun6i_dphy *dphy);
bool supports_rx;
};

@@ -156,33 +159,10 @@ static int sun6i_dphy_configure(struct phy *phy, union phy_configure_opts *opts)
return 0;
}

-static int sun6i_dphy_tx_power_on(struct sun6i_dphy *dphy)
+static void sun6i_a31_mipi_dphy_tx_power_on(struct sun6i_dphy *dphy)
{
u8 lanes_mask = GENMASK(dphy->config.lanes - 1, 0);

- regmap_write(dphy->regs, SUN6I_DPHY_TX_CTL_REG,
- SUN6I_DPHY_TX_CTL_HS_TX_CLK_CONT);
-
- regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME0_REG,
- SUN6I_DPHY_TX_TIME0_LP_CLK_DIV(14) |
- SUN6I_DPHY_TX_TIME0_HS_PREPARE(6) |
- SUN6I_DPHY_TX_TIME0_HS_TRAIL(10));
-
- regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME1_REG,
- SUN6I_DPHY_TX_TIME1_CLK_PREPARE(7) |
- SUN6I_DPHY_TX_TIME1_CLK_ZERO(50) |
- SUN6I_DPHY_TX_TIME1_CLK_PRE(3) |
- SUN6I_DPHY_TX_TIME1_CLK_POST(10));
-
- regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME2_REG,
- SUN6I_DPHY_TX_TIME2_CLK_TRAIL(30));
-
- regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME3_REG, 0);
-
- regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME4_REG,
- SUN6I_DPHY_TX_TIME4_HS_TX_ANA0(3) |
- SUN6I_DPHY_TX_TIME4_HS_TX_ANA1(3));
-
regmap_write(dphy->regs, SUN6I_DPHY_ANA0_REG,
SUN6I_DPHY_ANA0_REG_PWS |
SUN6I_DPHY_ANA0_REG_DMPC |
@@ -214,6 +194,36 @@ static int sun6i_dphy_tx_power_on(struct sun6i_dphy *dphy)
SUN6I_DPHY_ANA3_EN_LDOC |
SUN6I_DPHY_ANA3_EN_LDOD);
udelay(1);
+}
+
+static int sun6i_dphy_tx_power_on(struct sun6i_dphy *dphy)
+{
+ u8 lanes_mask = GENMASK(dphy->config.lanes - 1, 0);
+
+ regmap_write(dphy->regs, SUN6I_DPHY_TX_CTL_REG,
+ SUN6I_DPHY_TX_CTL_HS_TX_CLK_CONT);
+
+ regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME0_REG,
+ SUN6I_DPHY_TX_TIME0_LP_CLK_DIV(14) |
+ SUN6I_DPHY_TX_TIME0_HS_PREPARE(6) |
+ SUN6I_DPHY_TX_TIME0_HS_TRAIL(10));
+
+ regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME1_REG,
+ SUN6I_DPHY_TX_TIME1_CLK_PREPARE(7) |
+ SUN6I_DPHY_TX_TIME1_CLK_ZERO(50) |
+ SUN6I_DPHY_TX_TIME1_CLK_PRE(3) |
+ SUN6I_DPHY_TX_TIME1_CLK_POST(10));
+
+ regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME2_REG,
+ SUN6I_DPHY_TX_TIME2_CLK_TRAIL(30));
+
+ regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME3_REG, 0);
+
+ regmap_write(dphy->regs, SUN6I_DPHY_TX_TIME4_REG,
+ SUN6I_DPHY_TX_TIME4_HS_TX_ANA0(3) |
+ SUN6I_DPHY_TX_TIME4_HS_TX_ANA1(3));
+
+ dphy->variant->tx_power_on(dphy);

regmap_update_bits(dphy->regs, SUN6I_DPHY_ANA3_REG,
SUN6I_DPHY_ANA3_EN_VTTC |
@@ -469,6 +479,7 @@ static int sun6i_dphy_probe(struct platform_device *pdev)
}

static const struct sun6i_dphy_variant sun6i_a31_mipi_dphy_variant = {
+ .tx_power_on = sun6i_a31_mipi_dphy_tx_power_on,
.supports_rx = true,
};

--
2.35.1