diff options
| -rw-r--r-- | drivers/thermal/msm_lmh_dcvs.c | 58 |
1 files changed, 57 insertions, 1 deletions
diff --git a/drivers/thermal/msm_lmh_dcvs.c b/drivers/thermal/msm_lmh_dcvs.c index fbe76eaa3867..ac62143d1e87 100644 --- a/drivers/thermal/msm_lmh_dcvs.c +++ b/drivers/thermal/msm_lmh_dcvs.c @@ -24,6 +24,7 @@ #include <linux/interrupt.h> #include <linux/timer.h> #include <linux/pm_opp.h> +#include <linux/cpu_cooling.h> #include <asm/smp_plat.h> #include <asm/cacheflush.h> @@ -40,6 +41,7 @@ #define MSM_LIMITS_NODE_DCVS 0x44435653 #define MSM_LIMITS_SUB_FN_THERMAL 0x54484D4C +#define MSM_LIMITS_SUB_FN_GENERAL 0x47454E00 #define MSM_LIMITS_ALGO_MODE_ENABLE 0x454E424C @@ -49,6 +51,8 @@ #define MSM_LIMITS_CLUSTER_0 0x6370302D #define MSM_LIMITS_CLUSTER_1 0x6370312D +#define MSM_LIMITS_DOMAIN_MAX 0x444D4158 + #define MSM_LIMITS_HIGH_THRESHOLD_VAL 95000 #define MSM_LIMITS_ARM_THRESHOLD_VAL 65000 #define MSM_LIMITS_POLLING_DELAY_MS 10 @@ -77,8 +81,12 @@ struct msm_lmh_dcvs_hw { cpumask_t core_map; struct timer_list poll_timer; uint32_t max_freq; + uint32_t hw_freq_limit; + struct list_head list; }; +LIST_HEAD(lmh_dcvs_hw_list); + static void msm_lmh_dcvs_get_max_freq(uint32_t cpu, uint32_t *max_freq) { unsigned long freq_ceil = UINT_MAX; @@ -104,6 +112,7 @@ static uint32_t msm_lmh_mitigation_notify(struct msm_lmh_dcvs_hw *hw) dcvsh_get_frequency(val, max_limit); sched_update_cpu_freq_min_max(&hw->core_map, 0, max_limit); trace_lmh_dcvs_freq(cpumask_first(&hw->core_map), max_limit); + hw->hw_freq_limit = max_limit; return max_limit; } @@ -250,6 +259,45 @@ static int trip_notify(enum thermal_trip_type type, int temp, void *data) return 0; } +static struct msm_lmh_dcvs_hw *get_dcvsh_hw_from_cpu(int cpu) +{ + struct msm_lmh_dcvs_hw *hw; + + list_for_each_entry(hw, &lmh_dcvs_hw_list, list) { + if (cpumask_test_cpu(cpu, &hw->core_map)) + return hw; + } + + return NULL; +} + +static int lmh_set_max_limit(int cpu, u32 freq) +{ + struct msm_lmh_dcvs_hw *hw = get_dcvsh_hw_from_cpu(cpu); + + if (!hw) + return -EINVAL; + + return msm_lmh_dcvs_write(hw->affinity, MSM_LIMITS_SUB_FN_GENERAL, + MSM_LIMITS_DOMAIN_MAX, freq); +} + +static int lmh_get_cur_limit(int cpu, unsigned long *freq) +{ + struct msm_lmh_dcvs_hw *hw = get_dcvsh_hw_from_cpu(cpu); + + if (!hw) + return -EINVAL; + *freq = hw->hw_freq_limit; + + return 0; +} + +static struct cpu_cooling_ops cd_ops = { + .get_cur_state = lmh_get_cur_limit, + .ceil_limit = lmh_set_max_limit, +}; + static int msm_lmh_dcvs_probe(struct platform_device *pdev) { int ret; @@ -257,6 +305,7 @@ static int msm_lmh_dcvs_probe(struct platform_device *pdev) struct msm_lmh_dcvs_hw *hw; char sensor_name[] = "limits_sensor-00"; struct thermal_zone_device *tzdev; + struct thermal_cooling_device *cdev; struct device_node *dn = pdev->dev.of_node; struct device_node *cpu_node, *lmh_node; uint32_t id, max_freq, request_reg, clear_reg; @@ -331,6 +380,10 @@ static int msm_lmh_dcvs_probe(struct platform_device *pdev) if (IS_ERR_OR_NULL(tzdev)) return PTR_ERR(tzdev); + /* Setup cooling devices to request mitigation states */ + cdev = cpufreq_platform_cooling_register(&hw->core_map, &cd_ops); + if (IS_ERR_OR_NULL(cdev)) + return PTR_ERR(cdev); /* * Driver defaults to for low and hi thresholds. * Since we make a check for hi > lo value, set the hi threshold @@ -356,7 +409,7 @@ static int msm_lmh_dcvs_probe(struct platform_device *pdev) return ret; } - hw->max_freq = max_freq; + hw->hw_freq_limit = hw->max_freq = max_freq; switch (affinity) { case 0: @@ -399,6 +452,9 @@ static int msm_lmh_dcvs_probe(struct platform_device *pdev) return ret; } + INIT_LIST_HEAD(&hw->list); + list_add(&hw->list, &lmh_dcvs_hw_list); + return ret; } |