From 0102c8c7fdfc4bd700971daff2b94470f4eafae4 Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Thu, 17 Sep 2026 09:52:33 +0800 Subject: perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rsp DMR introduces Offmodule Response events in place of the legacy Offcore Response events, but it still exposes the inherited offcore_rsp PMU attribute for programming the corresponding MSR data. Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface matches the underlying event name and avoids user & tooling confusion. Signed-off-by: Dapeng Mi Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com --- drivers/nvmem/apple-spmi-nvmem.c | 78 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 drivers/nvmem/apple-spmi-nvmem.c (limited to 'drivers/nvmem/apple-spmi-nvmem.c') diff --git a/drivers/nvmem/apple-spmi-nvmem.c b/drivers/nvmem/apple-spmi-nvmem.c new file mode 100644 index 000000000..7acb0c07d --- /dev/null +++ b/drivers/nvmem/apple-spmi-nvmem.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* + * Apple SPMI NVMEM driver + * + * Copyright The Asahi Linux Contributors + */ + +#include +#include +#include +#include +#include +#include + +static const struct regmap_config apple_spmi_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .max_register = 0xffff, +}; + +static int apple_spmi_nvmem_read(void *priv, unsigned int offset, void *val, + size_t bytes) +{ + struct regmap *map = priv; + + return regmap_bulk_read(map, offset, val, bytes); +} + +static int apple_spmi_nvmem_write(void *priv, unsigned int offset, void *val, + size_t bytes) +{ + struct regmap *map = priv; + + return regmap_bulk_write(map, offset, val, bytes); +} + +static int apple_spmi_nvmem_probe(struct spmi_device *sdev) +{ + struct regmap *regmap; + struct nvmem_config nvmem_cfg = { + .dev = &sdev->dev, + .name = "spmi_nvmem", + .id = NVMEM_DEVID_AUTO, + .word_size = 1, + .stride = 1, + .size = 0xffff, + .reg_read = apple_spmi_nvmem_read, + .reg_write = apple_spmi_nvmem_write, + }; + + regmap = devm_regmap_init_spmi_ext(sdev, &apple_spmi_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + nvmem_cfg.priv = regmap; + + return PTR_ERR_OR_ZERO(devm_nvmem_register(&sdev->dev, &nvmem_cfg)); +} + +static const struct of_device_id apple_spmi_nvmem_id_table[] = { + { .compatible = "apple,spmi-nvmem" }, + { }, +}; +MODULE_DEVICE_TABLE(of, apple_spmi_nvmem_id_table); + +static struct spmi_driver apple_spmi_nvmem_driver = { + .probe = apple_spmi_nvmem_probe, + .driver = { + .name = "apple-spmi-nvmem", + .of_match_table = apple_spmi_nvmem_id_table, + }, +}; + +module_spmi_driver(apple_spmi_nvmem_driver); + +MODULE_LICENSE("Dual MIT/GPL"); +MODULE_AUTHOR("Hector Martin "); +MODULE_DESCRIPTION("Apple SPMI NVMEM driver"); -- cgit v1.3.1