diff options
| author | Hyongbin Kim <hyongbink@nvidia.com> | 2013-08-21 12:22:27 +0900 |
|---|---|---|
| committer | Gabby Lee <galee@nvidia.com> | 2013-08-23 04:58:59 -0700 |
| commit | 51ac69e5b329f61d7c5ab4c37da4917e36ba256c (patch) | |
| tree | a5f6d9e28630c2244454940310d5db7c3d35d86d /drivers | |
| parent | 903518c6b37d3a425345e42173b20c07875385ff (diff) | |
power: max17048: sysedp throttle in low SOC
When low SOC, limit freq of cpu, gpu, emc by sysedp_lite.
Bug 1316595
Change-Id: I112efb815d3c57731d7478bb2ab0589c10f72865
Signed-off-by: Hyongbin Kim <hyongbink@nvidia.com>
Reviewed-on: http://git-master/r/264167
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Gabby Lee <galee@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/max17048_battery.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/power/max17048_battery.c b/drivers/power/max17048_battery.c index 5c77020386c6..438efd753811 100644 --- a/drivers/power/max17048_battery.c +++ b/drivers/power/max17048_battery.c @@ -27,6 +27,7 @@ #include <linux/wakelock.h> #include <linux/thermal.h> #include <linux/platform_data/ina230.h> +#include <linux/platform_data/tegra_edp.h> #include <generated/mach-types.h> #define MAX17048_VCELL 0x02 @@ -327,6 +328,27 @@ static void max17048_set_current_threshold(struct i2c_client *client) } } +static void max17048_sysedp_throttle(struct i2c_client *client) +{ + struct max17048_chip *chip = i2c_get_clientdata(client); + int i; + unsigned int power = ULONG_MAX; + + /* edp throttle by SOC */ + /* sysedp_throttle_power array should be sorted in ascending order */ + if (chip->pdata->sysedp_throttle) { + for (i = 0; i < chip->pdata->sysedp_throttle_num; i++) { + if ((chip->internal_soc <= + chip->pdata->sysedp_throttle_soc[i]) && + chip->pdata->sysedp_throttle_power[i]) { + power = chip->pdata->sysedp_throttle_power[i]; + break; + } + } + chip->pdata->sysedp_throttle(power); + } +} + static uint16_t max17048_get_version(struct i2c_client *client) { return max17048_read_word(client, MAX17048_VER); @@ -428,6 +450,7 @@ static void max17048_work(struct work_struct *work) max17048_get_vcell(chip->client); max17048_get_soc(chip->client); max17048_set_current_threshold(chip->client); + max17048_sysedp_throttle(chip->client); if (chip->soc != chip->lasttime_soc || chip->status != chip->lasttime_status) { @@ -729,6 +752,7 @@ static irqreturn_t max17048_irq(int id, void *dev) max17048_get_vcell(client); max17048_get_soc(client); max17048_set_current_threshold(client); + max17048_sysedp_throttle(client); chip->lasttime_soc = chip->soc; dev_info(&client->dev, @@ -924,6 +948,40 @@ static struct max17048_platform_data *max17048_parse_dt(struct device *dev) for (i = 0; i < pdata->current_threshold_num; i++) pdata->current_threshold[i] = soc_array[i]; } + + if ((!of_property_read_string(np, "sysedp_throttle", &str)) && + (!strncmp(str, "sysedp_lite", strlen(str)))) { + pdata->sysedp_throttle = sysedp_lite_throttle; + } else { + pdata->sysedp_throttle = NULL; + } + + ret = of_property_read_u32(np, "sysedp_throttle_num", &val); + if (ret < 0) + pdata->sysedp_throttle_num = 0; + else + pdata->sysedp_throttle_num = val; + + if (pdata->sysedp_throttle_num > MAX17048_MAX_SOC_STEP) + pdata->sysedp_throttle_num = MAX17048_MAX_SOC_STEP; + + if (pdata->sysedp_throttle != NULL && pdata->sysedp_throttle_num) { + ret = of_property_read_u32_array(np, "sysedp_throttle_soc", + soc_array, pdata->sysedp_throttle_num); + if (ret < 0) + return ERR_PTR(ret); + + for (i = 0; i < pdata->sysedp_throttle_num; i++) + pdata->sysedp_throttle_soc[i] = soc_array[i]; + + ret = of_property_read_u32_array(np, "sysedp_throttle_power", + soc_array, pdata->sysedp_throttle_num); + if (ret < 0) + return ERR_PTR(ret); + + for (i = 0; i < pdata->sysedp_throttle_num; i++) + pdata->sysedp_throttle_power[i] = soc_array[i]; + } return pdata; } #else |