// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the TI TPS23881 PoE PSE Controller driver (I2C bus) * * Copyright (c) 2023 Bootlin, Kory Maincent <[email protected]> */ #include <linux/bitfield.h> #include <linux/delay.h> #include <linux/firmware.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pse-pd/pse.h> #define TPS23881_MAX_CHANS … #define TPS23881_REG_PW_STATUS … #define TPS23881_REG_OP_MODE … #define TPS23881_OP_MODE_SEMIAUTO … #define TPS23881_REG_DIS_EN … #define TPS23881_REG_DET_CLA_EN … #define TPS23881_REG_GEN_MASK … #define TPS23881_REG_NBITACC … #define TPS23881_REG_PW_EN … #define TPS23881_REG_PORT_MAP … #define TPS23881_REG_PORT_POWER … #define TPS23881_REG_POEPLUS … #define TPS23881_REG_TPON … #define TPS23881_REG_FWREV … #define TPS23881_REG_DEVID … #define TPS23881_REG_DEVID_MASK … #define TPS23881_DEVICE_ID … #define TPS23881_REG_SRAM_CTRL … #define TPS23881_REG_SRAM_DATA … struct tps23881_port_desc { … }; struct tps23881_priv { … }; static struct tps23881_priv *to_tps23881_priv(struct pse_controller_dev *pcdev) { … } static int tps23881_pi_enable(struct pse_controller_dev *pcdev, int id) { … } static int tps23881_pi_disable(struct pse_controller_dev *pcdev, int id) { … } static int tps23881_pi_is_enabled(struct pse_controller_dev *pcdev, int id) { … } static int tps23881_ethtool_get_status(struct pse_controller_dev *pcdev, unsigned long id, struct netlink_ext_ack *extack, struct pse_control_status *status) { … } /* Parse managers subnode into a array of device node */ static int tps23881_get_of_channels(struct tps23881_priv *priv, struct device_node *chan_node[TPS23881_MAX_CHANS]) { … } struct tps23881_port_matrix { … }; static int tps23881_match_channel(const struct pse_pi_pairset *pairset, struct device_node *chan_node[TPS23881_MAX_CHANS]) { … } static bool tps23881_is_chan_free(struct tps23881_port_matrix port_matrix[TPS23881_MAX_CHANS], int chan) { … } /* Fill port matrix with the matching channels */ static int tps23881_match_port_matrix(struct pse_pi *pi, int pi_id, struct device_node *chan_node[TPS23881_MAX_CHANS], struct tps23881_port_matrix port_matrix[TPS23881_MAX_CHANS]) { … } static int tps23881_get_unused_chan(struct tps23881_port_matrix port_matrix[TPS23881_MAX_CHANS], int port_cnt) { … } /* Sort the port matrix to following particular hardware ports matrix * specification of the tps23881. The device has two 4-ports groups and * each 4-pair powered device has to be configured to use two consecutive * logical channel in each 4 ports group (1 and 2 or 3 and 4). Also the * hardware matrix has to be fully configured even with unused chan to be * valid. */ static int tps23881_sort_port_matrix(struct tps23881_port_matrix port_matrix[TPS23881_MAX_CHANS]) { … } /* Write port matrix to the hardware port matrix and the software port * matrix. */ static int tps23881_write_port_matrix(struct tps23881_priv *priv, struct tps23881_port_matrix port_matrix[TPS23881_MAX_CHANS], int port_cnt) { … } static int tps23881_set_ports_conf(struct tps23881_priv *priv, struct tps23881_port_matrix port_matrix[TPS23881_MAX_CHANS]) { … } static int tps23881_set_ports_matrix(struct tps23881_priv *priv, struct device_node *chan_node[TPS23881_MAX_CHANS]) { … } static int tps23881_setup_pi_matrix(struct pse_controller_dev *pcdev) { … } static const struct pse_controller_ops tps23881_ops = …; static const char fw_parity_name[] = …; static const char fw_sram_name[] = …; struct tps23881_fw_conf { … }; static const struct tps23881_fw_conf tps23881_fw_parity_conf[] = …; static const struct tps23881_fw_conf tps23881_fw_sram_conf[] = …; static int tps23881_flash_sram_fw_part(struct i2c_client *client, const char *fw_name, const struct tps23881_fw_conf *fw_conf) { … } static int tps23881_flash_sram_fw(struct i2c_client *client) { … } static int tps23881_i2c_probe(struct i2c_client *client) { … } static const struct i2c_device_id tps23881_id[] = …; MODULE_DEVICE_TABLE(i2c, tps23881_id); static const struct of_device_id tps23881_of_match[] = …; MODULE_DEVICE_TABLE(of, tps23881_of_match); static struct i2c_driver tps23881_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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