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Subject[PATCH v2 net-next 1/3] net: dsa: lan9303: Refactor lan9303_xxx_packet_processing()
Date
lan9303_enable_packet_processing, lan9303_disable_packet_processing()
Pass port number (0,1,2) as parameter instead of port offset.
Because other functions in the module pass port numbers.
And to enable simplifications in following patch.

Plus replaced a constant 0x400 with LAN9303_SWITCH_PORT_REG().

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
---
drivers/net/dsa/lan9303-core.c | 62 ++++++++++++++++++++++--------------------
1 file changed, 33 insertions(+), 29 deletions(-)

diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 8e430d1ee297..4c514d3b9f68 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -159,9 +159,7 @@
# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT1 (BIT(9) | BIT(8))
# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0 (BIT(1) | BIT(0))

-#define LAN9303_PORT_0_OFFSET 0x400
-#define LAN9303_PORT_1_OFFSET 0x800
-#define LAN9303_PORT_2_OFFSET 0xc00
+#define LAN9303_SWITCH_PORT_REG(port, reg0) (0x400 * (port) + (reg0))

/* the built-in PHYs are of type LAN911X */
#define MII_LAN911X_SPECIAL_MODES 0x12
@@ -428,6 +426,13 @@ static int lan9303_read_switch_reg(struct lan9303 *chip, u16 regnum, u32 *val)
return ret;
}

+static int lan9303_write_switch_port(
+ struct lan9303 *chip, unsigned int port, u16 regnum, u32 val)
+{
+ return lan9303_write_switch_reg(
+ chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
+}
+
static int lan9303_detect_phy_setup(struct lan9303 *chip)
{
int reg;
@@ -458,24 +463,23 @@ static int lan9303_detect_phy_setup(struct lan9303 *chip)
return 0;
}

-#define LAN9303_MAC_RX_CFG_OFFS (LAN9303_MAC_RX_CFG_0 - LAN9303_PORT_0_OFFSET)
-#define LAN9303_MAC_TX_CFG_OFFS (LAN9303_MAC_TX_CFG_0 - LAN9303_PORT_0_OFFSET)
-
static int lan9303_disable_packet_processing(struct lan9303 *chip,
unsigned int port)
{
int ret;

/* disable RX, but keep register reset default values else */
- ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,
- LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
+ ret = lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_RX_CFG_0,
+ LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
if (ret)
return ret;

/* disable TX, but keep register reset default values else */
- return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,
- LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
- LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
+ return lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_TX_CFG_0,
+ LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
+ LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
}

static int lan9303_enable_packet_processing(struct lan9303 *chip,
@@ -484,17 +488,19 @@ static int lan9303_enable_packet_processing(struct lan9303 *chip,
int ret;

/* enable RX and keep register reset default values else */
- ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,
- LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
- LAN9303_MAC_RX_CFG_X_RX_ENABLE);
+ ret = lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_RX_CFG_0,
+ LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
+ LAN9303_MAC_RX_CFG_X_RX_ENABLE);
if (ret)
return ret;

/* enable TX and keep register reset default values else */
- return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,
- LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
- LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
- LAN9303_MAC_TX_CFG_X_TX_ENABLE);
+ return lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_TX_CFG_0,
+ LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
+ LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
+ LAN9303_MAC_TX_CFG_X_TX_ENABLE);
}

/* We want a special working switch:
@@ -558,13 +564,13 @@ static int lan9303_disable_processing(struct lan9303 *chip)
{
int ret;

- ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_0_OFFSET);
+ ret = lan9303_disable_packet_processing(chip, 0);
if (ret)
return ret;
- ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);
+ ret = lan9303_disable_packet_processing(chip, 1);
if (ret)
return ret;
- return lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);
+ return lan9303_disable_packet_processing(chip, 2);
}

static int lan9303_check_device(struct lan9303 *chip)
@@ -634,7 +640,7 @@ static int lan9303_setup(struct dsa_switch *ds)
if (ret)
dev_err(chip->dev, "failed to separate ports %d\n", ret);

- ret = lan9303_enable_packet_processing(chip, LAN9303_PORT_0_OFFSET);
+ ret = lan9303_enable_packet_processing(chip, 0);
if (ret)
dev_err(chip->dev, "failed to re-enable switching %d\n", ret);

@@ -704,7 +710,7 @@ static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
unsigned int u, poff;
int ret;

- poff = port * 0x400;
+ poff = LAN9303_SWITCH_PORT_REG(port, 0);

for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
ret = lan9303_read_switch_reg(chip,
@@ -757,11 +763,9 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
/* enable internal packet processing */
switch (port) {
case 1:
- return lan9303_enable_packet_processing(chip,
- LAN9303_PORT_1_OFFSET);
+ return lan9303_enable_packet_processing(chip, port);
case 2:
- return lan9303_enable_packet_processing(chip,
- LAN9303_PORT_2_OFFSET);
+ return lan9303_enable_packet_processing(chip, port);
default:
dev_dbg(chip->dev,
"Error: request to power up invalid port %d\n", port);
@@ -778,12 +782,12 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port,
/* disable internal packet processing */
switch (port) {
case 1:
- lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);
+ lan9303_disable_packet_processing(chip, port);
lan9303_phy_write(ds, chip->phy_addr_sel_strap + 1,
MII_BMCR, BMCR_PDOWN);
break;
case 2:
- lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);
+ lan9303_disable_packet_processing(chip, port);
lan9303_phy_write(ds, chip->phy_addr_sel_strap + 2,
MII_BMCR, BMCR_PDOWN);
break;
--
2.11.0
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