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Add support for the Allwinner H3 Thermal Sensor Controller. The H3 embeds

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a single thermal sensor located in the CPU.
This commit is contained in:
Jared McNeill 2016-09-05 11:05:14 +00:00
parent e24e98d090
commit 4e7f43bab6
3 changed files with 49 additions and 11 deletions
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58
sys/arm/allwinner/aw_thermal.c
View file

@ -82,16 +82,26 @@ __FBSDID("$FreeBSD$");
#define A83T_FILTER 0x4
#define A83T_INTC 0x1000
#define A83T_TEMP_BASE 2719000
#define A83T_TEMP_MUL 1000
#define A83T_TEMP_DIV 14186
#define A83T_CLK_RATE 24000000
#define A64_ADC_ACQUIRE_TIME 0x190
#define A64_FILTER 0x6
#define A64_INTC 0x18000
#define A64_INTC 0x18000
#define A64_TEMP_BASE 2170000
#define A64_TEMP_MUL 1000
#define A64_TEMP_DIV 8560
#define A64_CLK_RATE 4000000
#define H3_ADC_ACQUIRE_TIME 0x3f
#define H3_FILTER 0x6
#define H3_INTC 0x191000
#define H3_TEMP_BASE 217000000
#define H3_TEMP_MUL 121168
#define H3_TEMP_DIV 1000000
#define H3_CLK_RATE 4000000
#define TEMP_C_TO_K 273
#define SENSOR_ENABLE_ALL (SENSOR0_EN|SENSOR1_EN|SENSOR2_EN)
#define SHUT_INT_ALL (SHUT_INT0_STS|SHUT_INT1_STS|SHUT_INT2_STS)
@ -110,8 +120,10 @@ struct aw_thermal_config {
uint32_t adc_acquire_time;
uint32_t filter;
uint32_t intc;
uint32_t temp_base;
uint32_t temp_div;
int temp_base;
int temp_mul;
int temp_div;
int calib;
};
static const struct aw_thermal_config a83t_config = {
@ -135,7 +147,9 @@ static const struct aw_thermal_config a83t_config = {
.filter = A83T_FILTER,
.intc = A83T_INTC,
.temp_base = A83T_TEMP_BASE,
.temp_mul = A83T_TEMP_MUL,
.temp_div = A83T_TEMP_DIV,
.calib = 1,
};
static const struct aw_thermal_config a64_config = {
@ -159,11 +173,30 @@ static const struct aw_thermal_config a64_config = {
.filter = A64_FILTER,
.intc = A64_INTC,
.temp_base = A64_TEMP_BASE,
.temp_mul = A64_TEMP_MUL,
.temp_div = A64_TEMP_DIV,
};
static const struct aw_thermal_config h3_config = {
.nsensors = 1,
.sensors = {
[0] = {
.name = "cpu",
.desc = "CPU temperature",
},
},
.clk_rate = H3_CLK_RATE,
.adc_acquire_time = H3_ADC_ACQUIRE_TIME,
.filter = H3_FILTER,
.intc = H3_INTC,
.temp_base = H3_TEMP_BASE,
.temp_mul = H3_TEMP_MUL,
.temp_div = H3_TEMP_DIV,
};
static struct ofw_compat_data compat_data[] = {
{ "allwinner,sun8i-a83t-ts", (uintptr_t)&a83t_config },
{ "allwinner,sun8i-h3-ts", (uintptr_t)&h3_config },
{ "allwinner,sun50i-a64-ts", (uintptr_t)&a64_config },
{ NULL, (uintptr_t)NULL }
};
@ -191,14 +224,16 @@ aw_thermal_init(struct aw_thermal_softc *sc)
uint32_t calib0, calib1;
int error;
/* Read calibration settings from SRAM */
error = aw_sid_read_tscalib(&calib0, &calib1);
if (error != 0)
return (error);
if (sc->conf->calib) {
/* Read calibration settings from SRAM */
error = aw_sid_read_tscalib(&calib0, &calib1);
if (error != 0)
return (error);
/* Write calibration settings to thermal controller */
WR4(sc, THS_CALIB0, calib0);
WR4(sc, THS_CALIB1, calib1);
/* Write calibration settings to thermal controller */
WR4(sc, THS_CALIB0, calib0);
WR4(sc, THS_CALIB1, calib1);
}
/* Configure ADC acquire time (CLK_IN/(N+1)) and enable sensors */
WR4(sc, THS_CTRL1, ADC_CALI_EN);
@ -221,7 +256,8 @@ aw_thermal_init(struct aw_thermal_softc *sc)
static int
aw_thermal_reg_to_temp(struct aw_thermal_softc *sc, uint32_t val)
{
return ((sc->conf->temp_base - val * 1000) / sc->conf->temp_div);
return ((sc->conf->temp_base - (val * sc->conf->temp_mul)) /
sc->conf->temp_div);
}
static int

1
sys/arm/allwinner/clk/aw_thsclk.c
View file

@ -59,6 +59,7 @@ __FBSDID("$FreeBSD$");
#define CLK_DIV_RATIO_MAX 3
static struct ofw_compat_data compat_data[] = {
{ "allwinner,sun8i-h3-ths-clk", 1 },
{ "allwinner,sun50i-a64-ths-clk", 1 },
{ NULL, 0 }
};

1
sys/arm/allwinner/files.allwinner
View file

@ -52,4 +52,5 @@ arm/allwinner/clk/aw_modclk.c standard
arm/allwinner/clk/aw_mmcclk.c standard
arm/allwinner/clk/aw_oscclk.c standard
arm/allwinner/clk/aw_pll.c standard
arm/allwinner/clk/aw_thsclk.c standard
arm/allwinner/clk/aw_usbclk.c standard