Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
George McCollister | 593 | 84.35% | 2 | 28.57% |
Tobias Waldekranz | 72 | 10.24% | 1 | 14.29% |
Vladimir Oltean | 34 | 4.84% | 1 | 14.29% |
Uwe Kleine-König | 4 | 0.57% | 3 | 42.86% |
Total | 703 | 7 |
// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2020 NovaTech LLC * George McCollister <george.mccollister@gmail.com> */ #include <linux/bits.h> #include <linux/i2c.h> #include <linux/module.h> #include "xrs700x.h" #include "xrs700x_reg.h" struct xrs700x_i2c_cmd { __be32 reg; __be16 val; } __packed; static int xrs700x_i2c_reg_read(void *context, unsigned int reg, unsigned int *val) { struct device *dev = context; struct i2c_client *i2c = to_i2c_client(dev); struct xrs700x_i2c_cmd cmd; int ret; cmd.reg = cpu_to_be32(reg | 1); ret = i2c_master_send(i2c, (char *)&cmd.reg, sizeof(cmd.reg)); if (ret < 0) { dev_err(dev, "xrs i2c_master_send returned %d\n", ret); return ret; } ret = i2c_master_recv(i2c, (char *)&cmd.val, sizeof(cmd.val)); if (ret < 0) { dev_err(dev, "xrs i2c_master_recv returned %d\n", ret); return ret; } *val = be16_to_cpu(cmd.val); return 0; } static int xrs700x_i2c_reg_write(void *context, unsigned int reg, unsigned int val) { struct device *dev = context; struct i2c_client *i2c = to_i2c_client(dev); struct xrs700x_i2c_cmd cmd; int ret; cmd.reg = cpu_to_be32(reg); cmd.val = cpu_to_be16(val); ret = i2c_master_send(i2c, (char *)&cmd, sizeof(cmd)); if (ret < 0) { dev_err(dev, "xrs i2c_master_send returned %d\n", ret); return ret; } return 0; } static const struct regmap_config xrs700x_i2c_regmap_config = { .val_bits = 16, .reg_stride = 2, .reg_bits = 32, .pad_bits = 0, .write_flag_mask = 0, .read_flag_mask = 0, .reg_read = xrs700x_i2c_reg_read, .reg_write = xrs700x_i2c_reg_write, .max_register = 0, .cache_type = REGCACHE_NONE, .reg_format_endian = REGMAP_ENDIAN_BIG, .val_format_endian = REGMAP_ENDIAN_BIG }; static int xrs700x_i2c_probe(struct i2c_client *i2c) { struct xrs700x *priv; int ret; priv = xrs700x_switch_alloc(&i2c->dev, i2c); if (!priv) return -ENOMEM; priv->regmap = devm_regmap_init(&i2c->dev, NULL, &i2c->dev, &xrs700x_i2c_regmap_config); if (IS_ERR(priv->regmap)) { ret = PTR_ERR(priv->regmap); dev_err(&i2c->dev, "Failed to initialize regmap: %d\n", ret); return ret; } i2c_set_clientdata(i2c, priv); ret = xrs700x_switch_register(priv); /* Main DSA driver may not be started yet. */ if (ret) return ret; return 0; } static void xrs700x_i2c_remove(struct i2c_client *i2c) { struct xrs700x *priv = i2c_get_clientdata(i2c); if (!priv) return; xrs700x_switch_remove(priv); } static void xrs700x_i2c_shutdown(struct i2c_client *i2c) { struct xrs700x *priv = i2c_get_clientdata(i2c); if (!priv) return; xrs700x_switch_shutdown(priv); i2c_set_clientdata(i2c, NULL); } static const struct i2c_device_id xrs700x_i2c_id[] = { { "xrs700x-switch" }, {} }; MODULE_DEVICE_TABLE(i2c, xrs700x_i2c_id); static const struct of_device_id __maybe_unused xrs700x_i2c_dt_ids[] = { { .compatible = "arrow,xrs7003e", .data = &xrs7003e_info }, { .compatible = "arrow,xrs7003f", .data = &xrs7003f_info }, { .compatible = "arrow,xrs7004e", .data = &xrs7004e_info }, { .compatible = "arrow,xrs7004f", .data = &xrs7004f_info }, {}, }; MODULE_DEVICE_TABLE(of, xrs700x_i2c_dt_ids); static struct i2c_driver xrs700x_i2c_driver = { .driver = { .name = "xrs700x-i2c", .of_match_table = of_match_ptr(xrs700x_i2c_dt_ids), }, .probe = xrs700x_i2c_probe, .remove = xrs700x_i2c_remove, .shutdown = xrs700x_i2c_shutdown, .id_table = xrs700x_i2c_id, }; module_i2c_driver(xrs700x_i2c_driver); MODULE_AUTHOR("George McCollister <george.mccollister@gmail.com>"); MODULE_DESCRIPTION("Arrow SpeedChips XRS700x DSA I2C driver"); MODULE_LICENSE("GPL v2");
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