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94 lines
2.6 KiB
94 lines
2.6 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/of_device.h> |
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#include <linux/regmap.h> |
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#include <linux/mfd/syscon.h> |
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#include "cpsw.h" |
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#define CTRL_MAC_LO_REG(offset, id) ((offset) + 0x8 * (id)) |
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#define CTRL_MAC_HI_REG(offset, id) ((offset) + 0x8 * (id) + 0x4) |
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static int davinci_emac_3517_get_macid(struct device *dev, u16 offset, |
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int slave, u8 *mac_addr) |
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{ |
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u32 macid_lsb; |
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u32 macid_msb; |
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struct regmap *syscon; |
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syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); |
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if (IS_ERR(syscon)) { |
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if (PTR_ERR(syscon) == -ENODEV) |
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return 0; |
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return PTR_ERR(syscon); |
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} |
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regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lsb); |
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regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_msb); |
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mac_addr[0] = (macid_msb >> 16) & 0xff; |
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mac_addr[1] = (macid_msb >> 8) & 0xff; |
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mac_addr[2] = macid_msb & 0xff; |
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mac_addr[3] = (macid_lsb >> 16) & 0xff; |
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mac_addr[4] = (macid_lsb >> 8) & 0xff; |
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mac_addr[5] = macid_lsb & 0xff; |
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return 0; |
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} |
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static int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave, |
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u8 *mac_addr) |
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{ |
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u32 macid_lo; |
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u32 macid_hi; |
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struct regmap *syscon; |
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syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); |
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if (IS_ERR(syscon)) { |
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if (PTR_ERR(syscon) == -ENODEV) |
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return 0; |
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return PTR_ERR(syscon); |
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} |
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regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lo); |
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regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_hi); |
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mac_addr[5] = (macid_lo >> 8) & 0xff; |
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mac_addr[4] = macid_lo & 0xff; |
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mac_addr[3] = (macid_hi >> 24) & 0xff; |
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mac_addr[2] = (macid_hi >> 16) & 0xff; |
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mac_addr[1] = (macid_hi >> 8) & 0xff; |
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mac_addr[0] = macid_hi & 0xff; |
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return 0; |
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} |
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int ti_cm_get_macid(struct device *dev, int slave, u8 *mac_addr) |
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{ |
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if (of_machine_is_compatible("ti,dm8148")) |
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return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); |
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if (of_machine_is_compatible("ti,am33xx")) |
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return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); |
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if (of_device_is_compatible(dev->of_node, "ti,am3517-emac")) |
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return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr); |
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if (of_device_is_compatible(dev->of_node, "ti,dm816-emac")) |
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return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr); |
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if (of_machine_is_compatible("ti,am43")) |
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return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); |
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if (of_machine_is_compatible("ti,dra7")) |
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return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr); |
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dev_info(dev, "incompatible machine/device type for reading mac address\n"); |
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return -ENOENT; |
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} |
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EXPORT_SYMBOL_GPL(ti_cm_get_macid); |
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MODULE_LICENSE("GPL");
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