diff options
Diffstat (limited to 'drivers/mfd/intel-m10-bmc.c')
| -rw-r--r-- | drivers/mfd/intel-m10-bmc.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/drivers/mfd/intel-m10-bmc.c b/drivers/mfd/intel-m10-bmc.c deleted file mode 100644 index 7e3319e5b22f..000000000000 --- a/drivers/mfd/intel-m10-bmc.c +++ /dev/null @@ -1,238 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Intel MAX 10 Board Management Controller chip - * - * Copyright (C) 2018-2020 Intel Corporation. All rights reserved. - */ -#include <linux/bitfield.h> -#include <linux/init.h> -#include <linux/mfd/core.h> -#include <linux/mfd/intel-m10-bmc.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/regmap.h> -#include <linux/spi/spi.h> - -enum m10bmc_type { - M10_N3000, - M10_D5005, - M10_N5010, -}; - -static struct mfd_cell m10bmc_d5005_subdevs[] = { - { .name = "d5005bmc-hwmon" }, - { .name = "d5005bmc-sec-update" } -}; - -static struct mfd_cell m10bmc_pacn3000_subdevs[] = { - { .name = "n3000bmc-hwmon" }, - { .name = "n3000bmc-retimer" }, - { .name = "n3000bmc-sec-update" }, -}; - -static struct mfd_cell m10bmc_n5010_subdevs[] = { - { .name = "n5010bmc-hwmon" }, -}; - -static const struct regmap_range m10bmc_regmap_range[] = { - regmap_reg_range(M10BMC_LEGACY_BUILD_VER, M10BMC_LEGACY_BUILD_VER), - regmap_reg_range(M10BMC_SYS_BASE, M10BMC_SYS_END), - regmap_reg_range(M10BMC_FLASH_BASE, M10BMC_FLASH_END), -}; - -static const struct regmap_access_table m10bmc_access_table = { - .yes_ranges = m10bmc_regmap_range, - .n_yes_ranges = ARRAY_SIZE(m10bmc_regmap_range), -}; - -static struct regmap_config intel_m10bmc_regmap_config = { - .reg_bits = 32, - .val_bits = 32, - .reg_stride = 4, - .wr_table = &m10bmc_access_table, - .rd_table = &m10bmc_access_table, - .max_register = M10BMC_MEM_END, -}; - -static ssize_t bmc_version_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct intel_m10bmc *ddata = dev_get_drvdata(dev); - unsigned int val; - int ret; - - ret = m10bmc_sys_read(ddata, M10BMC_BUILD_VER, &val); - if (ret) - return ret; - - return sprintf(buf, "0x%x\n", val); -} -static DEVICE_ATTR_RO(bmc_version); - -static ssize_t bmcfw_version_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct intel_m10bmc *ddata = dev_get_drvdata(dev); - unsigned int val; - int ret; - - ret = m10bmc_sys_read(ddata, NIOS2_FW_VERSION, &val); - if (ret) - return ret; - - return sprintf(buf, "0x%x\n", val); -} -static DEVICE_ATTR_RO(bmcfw_version); - -static ssize_t mac_address_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct intel_m10bmc *max10 = dev_get_drvdata(dev); - unsigned int macaddr_low, macaddr_high; - int ret; - - ret = m10bmc_sys_read(max10, M10BMC_MAC_LOW, &macaddr_low); - if (ret) - return ret; - - ret = m10bmc_sys_read(max10, M10BMC_MAC_HIGH, &macaddr_high); - if (ret) - return ret; - - return sysfs_emit(buf, "%02x:%02x:%02x:%02x:%02x:%02x\n", - (u8)FIELD_GET(M10BMC_MAC_BYTE1, macaddr_low), - (u8)FIELD_GET(M10BMC_MAC_BYTE2, macaddr_low), - (u8)FIELD_GET(M10BMC_MAC_BYTE3, macaddr_low), - (u8)FIELD_GET(M10BMC_MAC_BYTE4, macaddr_low), - (u8)FIELD_GET(M10BMC_MAC_BYTE5, macaddr_high), - (u8)FIELD_GET(M10BMC_MAC_BYTE6, macaddr_high)); -} -static DEVICE_ATTR_RO(mac_address); - -static ssize_t mac_count_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct intel_m10bmc *max10 = dev_get_drvdata(dev); - unsigned int macaddr_high; - int ret; - - ret = m10bmc_sys_read(max10, M10BMC_MAC_HIGH, &macaddr_high); - if (ret) - return ret; - - return sysfs_emit(buf, "%u\n", - (u8)FIELD_GET(M10BMC_MAC_COUNT, macaddr_high)); -} -static DEVICE_ATTR_RO(mac_count); - -static struct attribute *m10bmc_attrs[] = { - &dev_attr_bmc_version.attr, - &dev_attr_bmcfw_version.attr, - &dev_attr_mac_address.attr, - &dev_attr_mac_count.attr, - NULL, -}; -ATTRIBUTE_GROUPS(m10bmc); - -static int check_m10bmc_version(struct intel_m10bmc *ddata) -{ - unsigned int v; - int ret; - - /* - * This check is to filter out the very old legacy BMC versions. In the - * old BMC chips, the BMC version info is stored in the old version - * register (M10BMC_LEGACY_BUILD_VER), so its read out value would have - * not been M10BMC_VER_LEGACY_INVALID (0xffffffff). But in new BMC - * chips that the driver supports, the value of this register should be - * M10BMC_VER_LEGACY_INVALID. - */ - ret = m10bmc_raw_read(ddata, M10BMC_LEGACY_BUILD_VER, &v); - if (ret) - return -ENODEV; - - if (v != M10BMC_VER_LEGACY_INVALID) { - dev_err(ddata->dev, "bad version M10BMC detected\n"); - return -ENODEV; - } - - return 0; -} - -static int intel_m10_bmc_spi_probe(struct spi_device *spi) -{ - const struct spi_device_id *id = spi_get_device_id(spi); - struct device *dev = &spi->dev; - struct mfd_cell *cells; - struct intel_m10bmc *ddata; - int ret, n_cell; - - ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); - if (!ddata) - return -ENOMEM; - - ddata->dev = dev; - - ddata->regmap = - devm_regmap_init_spi_avmm(spi, &intel_m10bmc_regmap_config); - if (IS_ERR(ddata->regmap)) { - ret = PTR_ERR(ddata->regmap); - dev_err(dev, "Failed to allocate regmap: %d\n", ret); - return ret; - } - - spi_set_drvdata(spi, ddata); - - ret = check_m10bmc_version(ddata); - if (ret) { - dev_err(dev, "Failed to identify m10bmc hardware\n"); - return ret; - } - - switch (id->driver_data) { - case M10_N3000: - cells = m10bmc_pacn3000_subdevs; - n_cell = ARRAY_SIZE(m10bmc_pacn3000_subdevs); - break; - case M10_D5005: - cells = m10bmc_d5005_subdevs; - n_cell = ARRAY_SIZE(m10bmc_d5005_subdevs); - break; - case M10_N5010: - cells = m10bmc_n5010_subdevs; - n_cell = ARRAY_SIZE(m10bmc_n5010_subdevs); - break; - default: - return -ENODEV; - } - - ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, cells, n_cell, - NULL, 0, NULL); - if (ret) - dev_err(dev, "Failed to register sub-devices: %d\n", ret); - - return ret; -} - -static const struct spi_device_id m10bmc_spi_id[] = { - { "m10-n3000", M10_N3000 }, - { "m10-d5005", M10_D5005 }, - { "m10-n5010", M10_N5010 }, - { } -}; -MODULE_DEVICE_TABLE(spi, m10bmc_spi_id); - -static struct spi_driver intel_m10bmc_spi_driver = { - .driver = { - .name = "intel-m10-bmc", - .dev_groups = m10bmc_groups, - }, - .probe = intel_m10_bmc_spi_probe, - .id_table = m10bmc_spi_id, -}; -module_spi_driver(intel_m10bmc_spi_driver); - -MODULE_DESCRIPTION("Intel MAX 10 BMC Device Driver"); -MODULE_AUTHOR("Intel Corporation"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("spi:intel-m10-bmc"); |