hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

thermal: rockchip: add the set_trips function 

Whenever the current temperature is updated, the trip points immediately
below and above the current temperature are found. A sensor driver
callback `set_trips' is then called with the temperatures.
Lastly, The sensor will trigger the hardware high temperature interrupts
to increase the sampleing rate and throttle frequency to limit the
temperature rising When performing passive cooling.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: linux-pm@vger.kernel.org
Tested-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Caesar Wang 2016-06-22 16:42:05 +08:00 committed by Zhang Rui
parent 897e721037
commit 148485023f
1 changed files with 39 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/thermal/rockchip_thermal.c
View File

@ -96,6 +96,7 @@ struct chip_tsadc_table {
* @initialize: SoC special initialize tsadc controller method
* @irq_ack: clear the interrupt
* @get_temp: get the temperature
* @set_alarm_temp: set the high temperature interrupt
* @set_tshut_temp: set the hardware-controlled shutdown temperature
* @set_tshut_mode: set the hardware-controlled shutdown mode
* @table: the chip-specific conversion table
@ -119,6 +120,8 @@ struct rockchip_tsadc_chip {
/* Per-sensor methods */
int (*get_temp)(struct chip_tsadc_table table,
int chn, void __iomem *reg, int *temp);
void (*set_alarm_temp)(struct chip_tsadc_table table,
int chn, void __iomem *reg, int temp);
void (*set_tshut_temp)(struct chip_tsadc_table table,
int chn, void __iomem *reg, int temp);
void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
@ -183,6 +186,7 @@ struct rockchip_thermal_data {
#define TSADCV2_INT_EN 0x08
#define TSADCV2_INT_PD 0x0c
#define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04)
#define TSADCV2_COMP_INT(chn) (0x30 + (chn) * 0x04)
#define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04)
#define TSADCV2_HIGHT_INT_DEBOUNCE 0x60
#define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64
@ -628,6 +632,20 @@ static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
return rk_tsadcv2_code_to_temp(table, val, temp);
}
static void rk_tsadcv2_alarm_temp(struct chip_tsadc_table table,
int chn, void __iomem *regs, int temp)
{
u32 alarm_value, int_en;
alarm_value = rk_tsadcv2_temp_to_code(table, temp);
writel_relaxed(alarm_value & table.data_mask,
regs + TSADCV2_COMP_INT(chn));
int_en = readl_relaxed(regs + TSADCV2_INT_EN);
int_en |= TSADCV2_INT_SRC_EN(chn);
writel_relaxed(int_en, regs + TSADCV2_INT_EN);
}
static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table,
int chn, void __iomem *regs, int temp)
{
@ -670,6 +688,7 @@ static const struct rockchip_tsadc_chip rk3228_tsadc_data = {
.irq_ack = rk_tsadcv3_irq_ack,
.control = rk_tsadcv3_control,
.get_temp = rk_tsadcv2_get_temp,
.set_alarm_temp = rk_tsadcv2_alarm_temp,
.set_tshut_temp = rk_tsadcv2_tshut_temp,
.set_tshut_mode = rk_tsadcv2_tshut_mode,
@ -694,6 +713,7 @@ static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
.irq_ack = rk_tsadcv2_irq_ack,
.control = rk_tsadcv2_control,
.get_temp = rk_tsadcv2_get_temp,
.set_alarm_temp = rk_tsadcv2_alarm_temp,
.set_tshut_temp = rk_tsadcv2_tshut_temp,
.set_tshut_mode = rk_tsadcv2_tshut_mode,
@ -718,6 +738,7 @@ static const struct rockchip_tsadc_chip rk3366_tsadc_data = {
.irq_ack = rk_tsadcv3_irq_ack,
.control = rk_tsadcv3_control,
.get_temp = rk_tsadcv2_get_temp,
.set_alarm_temp = rk_tsadcv2_alarm_temp,
.set_tshut_temp = rk_tsadcv2_tshut_temp,
.set_tshut_mode = rk_tsadcv2_tshut_mode,
@ -742,6 +763,7 @@ static const struct rockchip_tsadc_chip rk3368_tsadc_data = {
.irq_ack = rk_tsadcv2_irq_ack,
.control = rk_tsadcv2_control,
.get_temp = rk_tsadcv2_get_temp,
.set_alarm_temp = rk_tsadcv2_alarm_temp,
.set_tshut_temp = rk_tsadcv2_tshut_temp,
.set_tshut_mode = rk_tsadcv2_tshut_mode,
@ -766,6 +788,7 @@ static const struct rockchip_tsadc_chip rk3399_tsadc_data = {
.irq_ack = rk_tsadcv3_irq_ack,
.control = rk_tsadcv3_control,
.get_temp = rk_tsadcv2_get_temp,
.set_alarm_temp = rk_tsadcv2_alarm_temp,
.set_tshut_temp = rk_tsadcv2_tshut_temp,
.set_tshut_mode = rk_tsadcv2_tshut_mode,
@ -826,6 +849,21 @@ static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
return IRQ_HANDLED;
}
static int rockchip_thermal_set_trips(void *_sensor, int low, int high)
{
struct rockchip_thermal_sensor *sensor = _sensor;
struct rockchip_thermal_data *thermal = sensor->thermal;
const struct rockchip_tsadc_chip *tsadc = thermal->chip;
dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n",
__func__, sensor->id, low, high);
tsadc->set_alarm_temp(tsadc->table,
sensor->id, thermal->regs, high);
return 0;
}
static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
{
struct rockchip_thermal_sensor *sensor = _sensor;
@ -843,6 +881,7 @@ static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = {
.get_temp = rockchip_thermal_get_temp,
.set_trips = rockchip_thermal_set_trips,
};
static int rockchip_configure_from_dt(struct device *dev,