diff options
Diffstat (limited to 'drivers/macintosh/windfarm_smu_sensors.c')
| -rw-r--r-- | drivers/macintosh/windfarm_smu_sensors.c | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/drivers/macintosh/windfarm_smu_sensors.c b/drivers/macintosh/windfarm_smu_sensors.c index 1cc4e4953d89..2bdb73b34d29 100644 --- a/drivers/macintosh/windfarm_smu_sensors.c +++ b/drivers/macintosh/windfarm_smu_sensors.c @@ -1,10 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Windfarm PowerMac thermal control. SMU based sensors * * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp. * <benh@kernel.crashing.org> - * - * Released under the term of the GNU GPL v2. */ #include <linux/types.h> @@ -15,7 +14,8 @@ #include <linux/init.h> #include <linux/wait.h> #include <linux/completion.h> -#include <asm/prom.h> +#include <linux/of.h> + #include <asm/machdep.h> #include <asm/io.h> #include <asm/sections.h> @@ -172,22 +172,22 @@ static int smu_slotspow_get(struct wf_sensor *sr, s32 *value) } -static struct wf_sensor_ops smu_cputemp_ops = { +static const struct wf_sensor_ops smu_cputemp_ops = { .get_value = smu_cputemp_get, .release = smu_ads_release, .owner = THIS_MODULE, }; -static struct wf_sensor_ops smu_cpuamp_ops = { +static const struct wf_sensor_ops smu_cpuamp_ops = { .get_value = smu_cpuamp_get, .release = smu_ads_release, .owner = THIS_MODULE, }; -static struct wf_sensor_ops smu_cpuvolt_ops = { +static const struct wf_sensor_ops smu_cpuvolt_ops = { .get_value = smu_cpuvolt_get, .release = smu_ads_release, .owner = THIS_MODULE, }; -static struct wf_sensor_ops smu_slotspow_ops = { +static const struct wf_sensor_ops smu_slotspow_ops = { .get_value = smu_slotspow_get, .release = smu_ads_release, .owner = THIS_MODULE, @@ -197,15 +197,14 @@ static struct wf_sensor_ops smu_slotspow_ops = { static struct smu_ad_sensor *smu_ads_create(struct device_node *node) { struct smu_ad_sensor *ads; - const char *c, *l; + const char *l; const u32 *v; ads = kmalloc(sizeof(struct smu_ad_sensor), GFP_KERNEL); if (ads == NULL) return NULL; - c = of_get_property(node, "device_type", NULL); l = of_get_property(node, "location", NULL); - if (c == NULL || l == NULL) + if (l == NULL) goto fail; /* We currently pick the sensors based on the OF name and location @@ -215,7 +214,7 @@ static struct smu_ad_sensor *smu_ads_create(struct device_node *node) * the names and locations consistents so I'll stick with the names * and locations for now. */ - if (!strcmp(c, "temp-sensor") && + if (of_node_is_type(node, "temp-sensor") && !strcmp(l, "CPU T-Diode")) { ads->sens.ops = &smu_cputemp_ops; ads->sens.name = "cpu-temp"; @@ -224,7 +223,7 @@ static struct smu_ad_sensor *smu_ads_create(struct device_node *node) SMU_SDB_CPUDIODE_ID); goto fail; } - } else if (!strcmp(c, "current-sensor") && + } else if (of_node_is_type(node, "current-sensor") && !strcmp(l, "CPU Current")) { ads->sens.ops = &smu_cpuamp_ops; ads->sens.name = "cpu-current"; @@ -233,7 +232,7 @@ static struct smu_ad_sensor *smu_ads_create(struct device_node *node) SMU_SDB_CPUVCP_ID); goto fail; } - } else if (!strcmp(c, "voltage-sensor") && + } else if (of_node_is_type(node, "voltage-sensor") && !strcmp(l, "CPU Voltage")) { ads->sens.ops = &smu_cpuvolt_ops; ads->sens.name = "cpu-voltage"; @@ -242,7 +241,7 @@ static struct smu_ad_sensor *smu_ads_create(struct device_node *node) SMU_SDB_CPUVCP_ID); goto fail; } - } else if (!strcmp(c, "power-sensor") && + } else if (of_node_is_type(node, "power-sensor") && !strcmp(l, "Slots Power")) { ads->sens.ops = &smu_slotspow_ops; ads->sens.name = "slots-power"; @@ -275,8 +274,8 @@ struct smu_cpu_power_sensor { struct list_head link; struct wf_sensor *volts; struct wf_sensor *amps; - int fake_volts : 1; - int quadratic : 1; + unsigned int fake_volts : 1; + unsigned int quadratic : 1; struct wf_sensor sens; }; #define to_smu_cpu_power(c) container_of(c, struct smu_cpu_power_sensor, sens) @@ -327,7 +326,7 @@ static int smu_cpu_power_get(struct wf_sensor *sr, s32 *value) return 0; } -static struct wf_sensor_ops smu_cpu_power_ops = { +static const struct wf_sensor_ops smu_cpu_power_ops = { .get_value = smu_cpu_power_get, .release = smu_cpu_power_release, .owner = THIS_MODULE, @@ -423,9 +422,8 @@ static int __init smu_sensors_init(void) return -ENODEV; /* Look for sensors subdir */ - for (sensors = NULL; - (sensors = of_get_next_child(smu, sensors)) != NULL;) - if (!strcmp(sensors->name, "sensors")) + for_each_child_of_node(smu, sensors) + if (of_node_name_eq(sensors, "sensors")) break; of_node_put(smu); |