1 // SPDX-License-Identifier: GPL-2.0+
7 #include <linux/mfd/syscon.h>
14 static int davinci_emac_3517_get_macid(struct device *dev, u16 offset,  in davinci_emac_3517_get_macid()  argument
19 	struct regmap *syscon;  in davinci_emac_3517_get_macid()  local
21 	syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");  in davinci_emac_3517_get_macid()
22 	if (IS_ERR(syscon)) {  in davinci_emac_3517_get_macid()
23 		if (PTR_ERR(syscon) == -ENODEV)  in davinci_emac_3517_get_macid()
25 		return PTR_ERR(syscon);  in davinci_emac_3517_get_macid()
28 	regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lsb);  in davinci_emac_3517_get_macid()
29 	regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_msb);  in davinci_emac_3517_get_macid()
41 static int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave,  in cpsw_am33xx_cm_get_macid()  argument
46 	struct regmap *syscon;  in cpsw_am33xx_cm_get_macid()  local
48 	syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");  in cpsw_am33xx_cm_get_macid()
49 	if (IS_ERR(syscon)) {  in cpsw_am33xx_cm_get_macid()
50 		if (PTR_ERR(syscon) == -ENODEV)  in cpsw_am33xx_cm_get_macid()
52 		return PTR_ERR(syscon);  in cpsw_am33xx_cm_get_macid()
55 	regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lo);  in cpsw_am33xx_cm_get_macid()
56 	regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_hi);  in cpsw_am33xx_cm_get_macid()
68 int ti_cm_get_macid(struct device *dev, int slave, u8 *mac_addr)  in ti_cm_get_macid()  argument
71 		return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);  in ti_cm_get_macid()
74 		return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);  in ti_cm_get_macid()
76 	if (of_device_is_compatible(dev->of_node, "ti,am3517-emac"))  in ti_cm_get_macid()
77 		return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr);  in ti_cm_get_macid()
79 	if (of_device_is_compatible(dev->of_node, "ti,dm816-emac"))  in ti_cm_get_macid()
80 		return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr);  in ti_cm_get_macid()
83 		return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);  in ti_cm_get_macid()
86 		return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr);  in ti_cm_get_macid()
88 	dev_info(dev, "incompatible machine/device type for reading mac address\n");  in ti_cm_get_macid()
89 	return -ENOENT;  in ti_cm_get_macid()