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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/ti/cpsw-common.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/ti/cpsw-common.c')
-rw-r--r-- | drivers/net/ethernet/ti/cpsw-common.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/cpsw-common.c b/drivers/net/ethernet/ti/cpsw-common.c new file mode 100644 index 000000000..bfa81bbfc --- /dev/null +++ b/drivers/net/ethernet/ti/cpsw-common.c @@ -0,0 +1,94 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> + +#include "cpsw.h" + +#define CTRL_MAC_LO_REG(offset, id) ((offset) + 0x8 * (id)) +#define CTRL_MAC_HI_REG(offset, id) ((offset) + 0x8 * (id) + 0x4) + +static int davinci_emac_3517_get_macid(struct device *dev, u16 offset, + int slave, u8 *mac_addr) +{ + u32 macid_lsb; + u32 macid_msb; + struct regmap *syscon; + + syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); + if (IS_ERR(syscon)) { + if (PTR_ERR(syscon) == -ENODEV) + return 0; + return PTR_ERR(syscon); + } + + regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lsb); + regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_msb); + + mac_addr[0] = (macid_msb >> 16) & 0xff; + mac_addr[1] = (macid_msb >> 8) & 0xff; + mac_addr[2] = macid_msb & 0xff; + mac_addr[3] = (macid_lsb >> 16) & 0xff; + mac_addr[4] = (macid_lsb >> 8) & 0xff; + mac_addr[5] = macid_lsb & 0xff; + + return 0; +} + +static int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave, + u8 *mac_addr) +{ + u32 macid_lo; + u32 macid_hi; + struct regmap *syscon; + + syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); + if (IS_ERR(syscon)) { + if (PTR_ERR(syscon) == -ENODEV) + return 0; + return PTR_ERR(syscon); + } + + regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lo); + regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_hi); + + mac_addr[5] = (macid_lo >> 8) & 0xff; + mac_addr[4] = macid_lo & 0xff; + mac_addr[3] = (macid_hi >> 24) & 0xff; + mac_addr[2] = (macid_hi >> 16) & 0xff; + mac_addr[1] = (macid_hi >> 8) & 0xff; + mac_addr[0] = macid_hi & 0xff; + + return 0; +} + +int ti_cm_get_macid(struct device *dev, int slave, u8 *mac_addr) +{ + if (of_machine_is_compatible("ti,dm8148")) + return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); + + if (of_machine_is_compatible("ti,am33xx")) + return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); + + if (of_device_is_compatible(dev->of_node, "ti,am3517-emac")) + return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr); + + if (of_device_is_compatible(dev->of_node, "ti,dm816-emac")) + return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr); + + if (of_machine_is_compatible("ti,am43")) + return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); + + if (of_machine_is_compatible("ti,dra7")) + return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr); + + dev_info(dev, "incompatible machine/device type for reading mac address\n"); + return -ENOENT; +} +EXPORT_SYMBOL_GPL(ti_cm_get_macid); + +MODULE_LICENSE("GPL"); |