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phy: ti: am654: simplify return handling 

Checking return value after each regfield write becomes
hard to read quickly as number of writes increase.

Simplify by checking for error only once.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Link: https://lore.kernel.org/r/20200727194603.44636-3-nsekhar@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Sekhar Nori 2020-07-28 01:16:02 +05:30 committed by Vinod Koul
parent c3e60e5a9e
commit b494bbb6c6
1 changed files with 20 additions and 28 deletions
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48
drivers/phy/ti/phy-am654-serdes.c
View File

@ -161,34 +161,32 @@ static void serdes_am654_disable_pll(struct serdes_am654 *phy)
static int serdes_am654_enable_txrx(struct serdes_am654 *phy)
{
int ret;
int ret = 0;
/* Enable TX */
ret = regmap_field_write(phy->fields[TX0_ENABLE], TX0_ENABLE_STATE);
if (ret)
return ret;
ret |= regmap_field_write(phy->fields[TX0_ENABLE], TX0_ENABLE_STATE);
/* Enable RX */
ret = regmap_field_write(phy->fields[RX0_ENABLE], RX0_ENABLE_STATE);
ret |= regmap_field_write(phy->fields[RX0_ENABLE], RX0_ENABLE_STATE);
if (ret)
return ret;
return -EIO;
return 0;
}
static int serdes_am654_disable_txrx(struct serdes_am654 *phy)
{
int ret;
int ret = 0;
/* Disable TX */
ret = regmap_field_write(phy->fields[TX0_ENABLE], TX0_DISABLE_STATE);
if (ret)
return ret;
ret |= regmap_field_write(phy->fields[TX0_ENABLE], TX0_DISABLE_STATE);
/* Disable RX */
ret = regmap_field_write(phy->fields[RX0_ENABLE], RX0_DISABLE_STATE);
ret |= regmap_field_write(phy->fields[RX0_ENABLE], RX0_DISABLE_STATE);
if (ret)
return ret;
return -EIO;
return 0;
}
@ -311,19 +309,14 @@ static int serdes_am654_usb3_init(struct serdes_am654 *phy)
static int serdes_am654_pcie_init(struct serdes_am654 *phy)
{
int ret;
int ret = 0;
ret = regmap_field_write(phy->fields[CONFIG_VERSION], VERSION_VAL);
if (ret)
return ret;
ret |= regmap_field_write(phy->fields[CONFIG_VERSION], VERSION_VAL);
ret |= regmap_field_write(phy->fields[CMU_MASTER_CDN], 0x1);
ret |= regmap_field_write(phy->fields[L1_MASTER_CDN], 0x1);
ret = regmap_field_write(phy->fields[CMU_MASTER_CDN], 0x1);
if (ret)
return ret;
ret = regmap_field_write(phy->fields[L1_MASTER_CDN], 0x1);
if (ret)
return ret;
return -EIO;
return 0;
}
@ -345,20 +338,19 @@ static int serdes_am654_init(struct phy *x)
static int serdes_am654_reset(struct phy *x)
{
struct serdes_am654 *phy = phy_get_drvdata(x);
int ret;
int ret = 0;
serdes_am654_disable_pll(phy);
serdes_am654_disable_txrx(phy);
ret = regmap_field_write(phy->fields[POR_EN], 0x1);
if (ret)
return ret;
ret |= regmap_field_write(phy->fields[POR_EN], 0x1);
mdelay(1);
ret = regmap_field_write(phy->fields[POR_EN], 0x0);
ret |= regmap_field_write(phy->fields[POR_EN], 0x0);
if (ret)
return ret;
return -EIO;
return 0;
}