[U-Boot] [PATCH v5 3/3] cmd: mdio: Switch to generic helpers when accessing the registers

[Carlo Caione]

Switch to use the generic helpers to access the MMD registers so that we
can used the same command also for C45 PHYs, C22 PHYs with direct and
indirect access and PHYs implementing a custom way to access the
registers.

Signed-off-by: Carlo Caione <ccaione at baylibre.com>
---
 cmd/mdio.c | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/cmd/mdio.c b/cmd/mdio.c
index 184868063a..efe8c9ef09 100644
--- a/cmd/mdio.c
+++ b/cmd/mdio.c
@@ -39,21 +39,24 @@ static int extract_range(char *input, int *plo, int *phi)
 	return 0;
 }
 
-static int mdio_write_ranges(struct phy_device *phydev, struct mii_dev *bus,
+static int mdio_write_ranges(struct mii_dev *bus,
 			     int addrlo,
 			     int addrhi, int devadlo, int devadhi,
 			     int reglo, int reghi, unsigned short data,
 			     int extended)
 {
+	struct phy_device *phydev;
 	int addr, devad, reg;
 	int err = 0;
 
 	for (addr = addrlo; addr <= addrhi; addr++) {
+		phydev = bus->phymap[addr];
+
 		for (devad = devadlo; devad <= devadhi; devad++) {
 			for (reg = reglo; reg <= reghi; reg++) {
 				if (!extended)
-					err = bus->write(bus, addr, devad,
-							 reg, data);
+					err = phy_write_mmd(phydev, devad,
+							    reg, data);
 				else
 					err = phydev->drv->writeext(phydev,
 							addr, devad, reg, data);
@@ -68,15 +71,17 @@ err_out:
 	return err;
 }
 
-static int mdio_read_ranges(struct phy_device *phydev, struct mii_dev *bus,
+static int mdio_read_ranges(struct mii_dev *bus,
 			    int addrlo,
 			    int addrhi, int devadlo, int devadhi,
 			    int reglo, int reghi, int extended)
 {
 	int addr, devad, reg;
+	struct phy_device *phydev;
 
 	printf("Reading from bus %s\n", bus->name);
 	for (addr = addrlo; addr <= addrhi; addr++) {
+		phydev = bus->phymap[addr];
 		printf("PHY at address %x:\n", addr);
 
 		for (devad = devadlo; devad <= devadhi; devad++) {
@@ -84,7 +89,7 @@ static int mdio_read_ranges(struct phy_device *phydev, struct mii_dev *bus,
 				int val;
 
 				if (!extended)
-					val = bus->read(bus, addr, devad, reg);
+					val = phy_read_mmd(phydev, devad, reg);
 				else
 					val = phydev->drv->readext(phydev, addr,
 						devad, reg);
@@ -222,14 +227,14 @@ static int do_mdio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 				bus = phydev->bus;
 				extended = 1;
 			} else {
-				return -1;
+				return CMD_RET_FAILURE;
 			}
 
 			if (!phydev->drv ||
 			    (!phydev->drv->writeext && (op[0] == 'w')) ||
 			    (!phydev->drv->readext && (op[0] == 'r'))) {
 				puts("PHY does not have extended functions\n");
-				return -1;
+				return CMD_RET_FAILURE;
 			}
 		}
 	}
@@ -242,13 +247,13 @@ static int do_mdio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		if (pos > 1)
 			if (extract_reg_range(argv[pos--], &devadlo, &devadhi,
 					      &reglo, &reghi))
-				return -1;
+				return CMD_RET_FAILURE;
 
 	default:
 		if (pos > 1)
 			if (extract_phy_range(&argv[2], pos - 1, &bus,
 					      &phydev, &addrlo, &addrhi))
-				return -1;
+				return CMD_RET_FAILURE;
 
 		break;
 	}
@@ -264,12 +269,12 @@ static int do_mdio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 
 	switch (op[0]) {
 	case 'w':
-		mdio_write_ranges(phydev, bus, addrlo, addrhi, devadlo, devadhi,
+		mdio_write_ranges(bus, addrlo, addrhi, devadlo, devadhi,
 				  reglo, reghi, data, extended);
 		break;
 
 	case 'r':
-		mdio_read_ranges(phydev, bus, addrlo, addrhi, devadlo, devadhi,
+		mdio_read_ranges(bus, addrlo, addrhi, devadlo, devadhi,
 				 reglo, reghi, extended);
 		break;
 	}
-- 
2.19.1