diff options
author | Vadim Pasternak <vadimp@nvidia.com> | 2023-08-22 14:34:45 +0300 |
---|---|---|
committer | Hans de Goede <hdegoede@redhat.com> | 2023-08-23 18:31:29 +0300 |
commit | 222954493cafda3b25aa1c467c9e5eb77474abb9 (patch) | |
tree | 84019a5fc393b71a269f2b3af04678440f24caae /drivers/platform/x86/mlx-platform.c | |
parent | b411dc55a735337a9d7c7dad605bad79e7266104 (diff) | |
download | linux-222954493cafda3b25aa1c467c9e5eb77474abb9.tar.xz |
platform: mellanox: mlx-platform: Prepare driver to allow probing through ACPI infrastructure
Currently driver is activated through DMI hooks.
Prepare driver to allow activation also through ACPI trigger.
Modify mlxplat_init()/mlxplat_exit() routines.
Add mlxplat_probe()/mlxplat_remove() routines and "mlxplat_driver"
structure.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Michael Shych <michaelsh@nvidia.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230822113451.13785-11-vadimp@nvidia.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/mlx-platform.c')
-rw-r--r-- | drivers/platform/x86/mlx-platform.c | 91 |
1 files changed, 61 insertions, 30 deletions
diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c index 296569492a71..73f887614e04 100644 --- a/drivers/platform/x86/mlx-platform.c +++ b/drivers/platform/x86/mlx-platform.c @@ -5574,6 +5574,17 @@ static void mlxplat_poweroff(void) kernel_halt(); } +static int __init mlxplat_register_platform_device(void) +{ + mlxplat_dev = platform_device_register_simple(MLX_PLAT_DEVICE_NAME, -1, + mlxplat_lpc_resources, + ARRAY_SIZE(mlxplat_lpc_resources)); + if (IS_ERR(mlxplat_dev)) + return PTR_ERR(mlxplat_dev); + else + return 1; +} + static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi) { int i; @@ -5594,7 +5605,7 @@ static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi) mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0]; mlxplat_i2c = &mlxplat_mlxcpld_i2c_default_data; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_default_wc_matched(const struct dmi_system_id *dmi) @@ -5617,7 +5628,7 @@ static int __init mlxplat_dmi_default_wc_matched(const struct dmi_system_id *dmi mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0]; mlxplat_i2c = &mlxplat_mlxcpld_i2c_default_data; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_default_eth_wc_blade_matched(const struct dmi_system_id *dmi) @@ -5642,7 +5653,7 @@ static int __init mlxplat_dmi_default_eth_wc_blade_matched(const struct dmi_syst mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_ng; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_msn21xx_matched(const struct dmi_system_id *dmi) @@ -5665,7 +5676,7 @@ static int __init mlxplat_dmi_msn21xx_matched(const struct dmi_system_id *dmi) mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0]; mlxplat_i2c = &mlxplat_mlxcpld_i2c_default_data; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_msn274x_matched(const struct dmi_system_id *dmi) @@ -5688,7 +5699,7 @@ static int __init mlxplat_dmi_msn274x_matched(const struct dmi_system_id *dmi) mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0]; mlxplat_i2c = &mlxplat_mlxcpld_i2c_default_data; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_msn201x_matched(const struct dmi_system_id *dmi) @@ -5711,7 +5722,7 @@ static int __init mlxplat_dmi_msn201x_matched(const struct dmi_system_id *dmi) mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0]; mlxplat_i2c = &mlxplat_mlxcpld_i2c_default_data; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_qmb7xx_matched(const struct dmi_system_id *dmi) @@ -5737,7 +5748,7 @@ static int __init mlxplat_dmi_qmb7xx_matched(const struct dmi_system_id *dmi) mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_ng; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_comex_matched(const struct dmi_system_id *dmi) @@ -5762,7 +5773,7 @@ static int __init mlxplat_dmi_comex_matched(const struct dmi_system_id *dmi) mlxplat_i2c = &mlxplat_mlxcpld_i2c_default_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_comex; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_ng400_matched(const struct dmi_system_id *dmi) @@ -5788,7 +5799,7 @@ static int __init mlxplat_dmi_ng400_matched(const struct dmi_system_id *dmi) mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_ng400; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_modular_matched(const struct dmi_system_id *dmi) @@ -5808,7 +5819,7 @@ static int __init mlxplat_dmi_modular_matched(const struct dmi_system_id *dmi) mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_eth_modular; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_chassis_blade_matched(const struct dmi_system_id *dmi) @@ -5830,7 +5841,7 @@ static int __init mlxplat_dmi_chassis_blade_matched(const struct dmi_system_id * mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_ng400; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_rack_switch_matched(const struct dmi_system_id *dmi) @@ -5851,7 +5862,7 @@ static int __init mlxplat_dmi_rack_switch_matched(const struct dmi_system_id *dm mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_rack_switch; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_ng800_matched(const struct dmi_system_id *dmi) @@ -5872,7 +5883,7 @@ static int __init mlxplat_dmi_ng800_matched(const struct dmi_system_id *dmi) mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data; mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_ng400; - return 1; + return mlxplat_register_platform_device(); } static int __init mlxplat_dmi_l1_switch_matched(const struct dmi_system_id *dmi) @@ -5895,7 +5906,7 @@ static int __init mlxplat_dmi_l1_switch_matched(const struct dmi_system_id *dmi) pm_power_off = mlxplat_poweroff; mlxplat_reboot_nb = &mlxplat_reboot_default_nb; - return 1; + return mlxplat_register_platform_device(); } static const struct dmi_system_id mlxplat_dmi_table[] __initconst = { @@ -6139,12 +6150,6 @@ static int mlxplat_lpc_cpld_device_init(struct resource **hotplug_resources, { int err; - mlxplat_dev = platform_device_register_simple(MLX_PLAT_DEVICE_NAME, PLATFORM_DEVID_NONE, - mlxplat_lpc_resources, - ARRAY_SIZE(mlxplat_lpc_resources)); - if (IS_ERR(mlxplat_dev)) - return PTR_ERR(mlxplat_dev); - mlxplat_mlxcpld_regmap_ctx.base = devm_ioport_map(&mlxplat_dev->dev, mlxplat_lpc_resources[1].start, 1); if (!mlxplat_mlxcpld_regmap_ctx.base) { @@ -6158,13 +6163,11 @@ static int mlxplat_lpc_cpld_device_init(struct resource **hotplug_resources, return 0; fail_devm_ioport_map: - platform_device_unregister(mlxplat_dev); return err; } static void mlxplat_lpc_cpld_device_exit(void) { - platform_device_unregister(mlxplat_dev); } static int @@ -6389,16 +6392,13 @@ static void mlxplat_i2c_main_exit(struct mlxplat_priv *priv) platform_device_unregister(priv->pdev_i2c); } -static int __init mlxplat_init(void) +static int mlxplat_probe(struct platform_device *pdev) { - unsigned int hotplug_resources_size; - struct resource *hotplug_resources; + unsigned int hotplug_resources_size = 0; + struct resource *hotplug_resources = NULL; struct mlxplat_priv *priv; int i, err; - if (!dmi_check_system(mlxplat_dmi_table)) - return -ENODEV; - err = mlxplat_pre_init(&hotplug_resources, &hotplug_resources_size); if (err) return err; @@ -6461,9 +6461,8 @@ fail_alloc: return err; } -module_init(mlxplat_init); -static void __exit mlxplat_exit(void) +static int mlxplat_remove(struct platform_device *pdev) { struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev); @@ -6474,6 +6473,38 @@ static void __exit mlxplat_exit(void) mlxplat_pre_exit(priv); mlxplat_i2c_main_exit(priv); mlxplat_post_exit(); + return 0; +} + +static struct platform_driver mlxplat_driver = { + .driver = { + .name = "mlxplat", + .probe_type = PROBE_FORCE_SYNCHRONOUS, + }, + .probe = mlxplat_probe, + .remove = mlxplat_remove, +}; + +static int __init mlxplat_init(void) +{ + int err; + + if (!dmi_check_system(mlxplat_dmi_table)) + return -ENODEV; + + err = platform_driver_register(&mlxplat_driver); + if (err) + return err; + return 0; +} +module_init(mlxplat_init); + +static void __exit mlxplat_exit(void) +{ + if (mlxplat_dev) + platform_device_unregister(mlxplat_dev); + + platform_driver_unregister(&mlxplat_driver); } module_exit(mlxplat_exit); |