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rk3288:tsadc:support auto mode,high temp to reset cru or cut down pmic

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This commit is contained in:
张晴
2014-06-30 11:35:50 +08:00
parent a44c3dcf84
commit b837ad0f8d
4 changed files with 89 additions and 34 deletions
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4
arch/arm/boot/dts/rk3288-pinctrl.dtsi
View File

@@ -946,6 +946,10 @@
rockchip,pins = <TSADC_INT>;
rockchip,pull = <VALUE_PULL_DISABLE>;
};
tsadc_gpio: tsadc-gpio {
rockchip,pins = <GPIO0_B2>;
rockchip,pull = <VALUE_PULL_DISABLE>;
};
};
//to add

8
arch/arm/boot/dts/rk3288.dtsi
View File

@@ -1238,9 +1238,15 @@
interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
#io-channel-cells = <1>;
io-channel-ranges;
clock-frequency = <50000>;
clock-frequency = <10000>;
clocks = <&clk_tsadc>, <&clk_gates7 2>;
clock-names = "tsadc", "pclk_tsadc";
pinctrl-names = "default", "tsadc_int";
pinctrl-0 = <&tsadc_gpio>;
pinctrl-1 = <&tsadc_int>;
tsadc-ht-temp = <120>;
tsadc-ht-reset-cru = <1>;
tsadc-ht-pull-gpio = <0>;
status = "okay";
};

5
drivers/hwmon/rockchip-hwmon.c
View File

@@ -67,7 +67,7 @@ static void tsadc_monitor(struct work_struct *work)
if (data->max[i] < data->min[i])
continue;
temp = data->ops.read_sensor(data->tsadc_addr[i]);
temp = data->ops.read_sensor(i);
if (temp == 150) {
dev_err(&data->pdev->dev, "TSADC read failed\n");
continue;
@@ -140,9 +140,8 @@ static ssize_t show_input(struct device *dev,
int temp;
struct rockchip_temp *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
u8 tsadc_addr = data->tsadc_addr[attr->index];
temp = data->ops.read_sensor(tsadc_addr);
temp = data->ops.read_sensor(attr->index);
return sprintf(buf, "%d\n", temp);
}

106
drivers/hwmon/rockchip_tsadc.c
View File

@@ -83,23 +83,30 @@
#define TSADC_HIGHT_INT_DEBOUNCE 0x60
#define TSADC_HIGHT_TSHUT_DEBOUNCE 0x64
#define TSADC_HIGHT_INT_DEBOUNCE_TIME 0x03
#define TSADC_HIGHT_TSHUT_DEBOUNCE_TIME 0x03
#define TSADC_HIGHT_INT_DEBOUNCE_TIME 0x0a
#define TSADC_HIGHT_TSHUT_DEBOUNCE_TIME 0x0a
#define TSADC_AUTO_PERIOD 0x68
#define TSADC_AUTO_PERIOD_HT 0x6c
#define TSADC_AUTO_PERIOD_TIME 0x10
#define TSADC_AUTO_PERIOD_HT_TIME 0x10
#define TSADC_AUTO_PERIOD_TIME 0x03e8
#define TSADC_AUTO_PERIOD_HT_TIME 0x64
#define TSADC_AUTO_EVENT_NAME "tsadc"
#define TSADC_COMP_INT_DATA 80
#define TSADC_COMP_INT_DATA_MASK 0xfff
#define TSADC_COMP_SHUT_DATA 100
#define TSADC_COMP_SHUT_DATA_MASK 0xfff
#define TSADC_HIGH_TEMP_TO_SHUTDOWN 0 // 1: set gpio0_a0 output 0 ; 0:reset cpu
#define TSADC_TEMP_INT_EN 1
#define TSADC_TEMP_INT_EN 0
#define TSADC_TEMP_SHUT_EN 1
static int tsadc_ht_temp;
static int tsadc_ht_reset_cru;
static int tsadc_ht_pull_gpio;
struct tsadc_port {
struct pinctrl *pctl;
struct pinctrl_state *pins_default;
struct pinctrl_state *pins_tsadc_int;
};
struct rockchip_tsadc_temp {
struct delayed_work power_off_work;
@@ -247,20 +254,19 @@ static void rockchip_tsadc_set_auto_int_en( int chn, int ht_int_en,int tshut_en)
}
if (tshut_en){
ret = tsadc_readl(TSADC_INT_EN);
#ifdef TSADC_HIGH_TEMP_TO_SHUTDOWN
tsadc_writel( ret | (1 << (chn + 4)), TSADC_INT_EN);
#else
tsadc_writel( ret | (1 << (chn + 8)), TSADC_INT_EN);
#endif
if (tsadc_ht_pull_gpio)
tsadc_writel(ret | (0xf << (chn + 4)), TSADC_INT_EN);
else if (tsadc_ht_reset_cru)
tsadc_writel(ret | (0xf << (chn + 8)), TSADC_INT_EN);
}
}
static void rockchip_tsadc_auto_mode_set( int chn, int int_temp, int shut_temp,int int_en, int shut_en)
static void rockchip_tsadc_auto_mode_set(int chn, int int_temp,
int shut_temp, int int_en, int shut_en)
{
u32 ret;
if (!g_dev || chn > 1)
if (!g_dev || chn > 4)
return;
mutex_lock(&tsadc_mutex);
@@ -270,17 +276,19 @@ static void rockchip_tsadc_auto_mode_set( int chn, int int_temp, int shut_temp,i
msleep(10);
tsadc_writel(0, TSADC_AUTO_CON);
tsadc_writel( 1 << (4+chn), TSADC_AUTO_CON);
tsadc_writel(1 << (4+chn), TSADC_AUTO_CON);
msleep(10);
if ((tsadc_readl(TSADC_AUTO_CON) & TSADC_AUTO_STAS_BUSY_MASK) != TSADC_AUTO_STAS_BUSY) {
rockchip_tsadc_set_cmpn_int_vale(chn,int_temp);
rockchip_tsadc_set_cmpn_shut_vale(chn,shut_temp),
// tsadc_writel(TSADC_AUTO_PERIOD_TIME, TSADC_AUTO_PERIOD);
// tsadc_writel(TSADC_AUTO_PERIOD_HT_TIME, TSADC_AUTO_PERIOD_HT);
tsadc_writel(TSADC_AUTO_PERIOD_TIME, TSADC_AUTO_PERIOD);
tsadc_writel(TSADC_AUTO_PERIOD_HT_TIME, TSADC_AUTO_PERIOD_HT);
// tsadc_writel(TSADC_HIGHT_INT_DEBOUNCE_TIME, TSADC_HIGHT_INT_DEBOUNCE);
// tsadc_writel(TSADC_HIGHT_TSHUT_DEBOUNCE_TIME, TSADC_HIGHT_TSHUT_DEBOUNCE);
tsadc_writel(TSADC_HIGHT_INT_DEBOUNCE_TIME,
TSADC_HIGHT_INT_DEBOUNCE);
tsadc_writel(TSADC_HIGHT_TSHUT_DEBOUNCE_TIME,
TSADC_HIGHT_TSHUT_DEBOUNCE);
rockchip_tsadc_set_auto_int_en(chn,int_en,shut_en);
}
@@ -296,13 +304,15 @@ static void rockchip_tsadc_auto_mode_set( int chn, int int_temp, int shut_temp,i
int rockchip_tsadc_set_auto_temp(int chn)
{
rockchip_tsadc_auto_mode_set(chn, TSADC_COMP_INT_DATA,TSADC_COMP_SHUT_DATA,TSADC_TEMP_INT_EN,TSADC_TEMP_SHUT_EN);
rockchip_tsadc_auto_mode_set(chn, TSADC_COMP_INT_DATA,
tsadc_ht_temp, TSADC_TEMP_INT_EN, TSADC_TEMP_SHUT_EN);
return 0;
}
EXPORT_SYMBOL(rockchip_tsadc_set_auto_temp);
static void rockchip_tsadc_get(int chn, int *temp, int *code)
{
int i;
*temp = 0;
*code = 0;
@@ -310,7 +320,7 @@ static void rockchip_tsadc_get(int chn, int *temp, int *code)
*temp = 150;
return ;
}
#if 0
mutex_lock(&tsadc_mutex);
clk_enable(g_dev->pclk);
@@ -321,7 +331,6 @@ static void rockchip_tsadc_get(int chn, int *temp, int *code)
tsadc_writel(TSADC_CTRL_POWER_UP | TSADC_CTRL_CH(chn), TSADC_USER_CON);
msleep(20);
if ((tsadc_readl(TSADC_USER_CON) & TSADC_STAS_BUSY_MASK) != TSADC_STAS_BUSY) {
int i;
*code = tsadc_readl((TSADC_DATA0 + chn*4)) & TSADC_DATA_MASK;
for (i = 0; i < ARRAY_SIZE(table) - 1; i++) {
if ((*code) <= table[i].code && (*code) > table[i + 1].code) {
@@ -336,6 +345,15 @@ static void rockchip_tsadc_get(int chn, int *temp, int *code)
clk_disable(g_dev->pclk);
mutex_unlock(&tsadc_mutex);
#else
*code = tsadc_readl((TSADC_DATA0 + chn*4)) & TSADC_DATA_MASK;
for (i = 0; i < ARRAY_SIZE(table) - 1; i++) {
if ((*code) <= table[i].code && (*code) > table[i + 1].code)
*temp = table[i].temp + (table[i + 1].temp
- table[i].temp) * (table[i].code - (*code))
/ (table[i].code - table[i + 1].code);
}
#endif
}
int rockchip_tsadc_get_temp(int chn)
@@ -343,6 +361,7 @@ static void rockchip_tsadc_get(int chn, int *temp, int *code)
int temp, code;
rockchip_tsadc_get(chn, &temp, &code);
return temp;
}
EXPORT_SYMBOL(rockchip_tsadc_get_temp);
@@ -380,7 +399,6 @@ static ssize_t rockchip_show_label(struct device *dev,
return sprintf(buf, "%s\n", label);
}
int rockchip_hwmon_init(struct rockchip_temp *data)
{
struct rockchip_tsadc_temp *rockchip_tsadc_data;
@@ -388,6 +406,7 @@ int rockchip_hwmon_init(struct rockchip_temp *data)
struct device_node *np = data->pdev->dev.of_node;
int ret,irq;
u32 rate;
struct tsadc_port *uap;
rockchip_tsadc_data = devm_kzalloc(&data->pdev->dev, sizeof(*rockchip_tsadc_data),
GFP_KERNEL);
@@ -449,21 +468,48 @@ int rockchip_hwmon_init(struct rockchip_temp *data)
g_dev = rockchip_tsadc_data;
data->plat_data = rockchip_tsadc_data;
ret = tsadc_readl(TSADC_AUTO_CON);
tsadc_writel(ret | (1 << 8) , TSADC_AUTO_CON);/*gpio0_b2 = 0 shutdown*/
if (of_property_read_u32(np, "tsadc-ht-temp",
&tsadc_ht_temp)) {
dev_err(&data->pdev->dev, "Missing tsadc_ht_temp in the DT.\n");
return -EPERM;
}
if (of_property_read_u32(np, "tsadc-ht-reset-cru",
&tsadc_ht_reset_cru)) {
dev_err(&data->pdev->dev, "Missing tsadc_ht_reset_cru in the DT.\n");
return -EPERM;
}
if (of_property_read_u32(np, "tsadc-ht-pull-gpio",
&tsadc_ht_pull_gpio)) {
dev_err(&data->pdev->dev, "Missing tsadc_ht_pull_gpio in the DT.\n");
return -EPERM;
}
uap = devm_kzalloc(&data->pdev->dev, sizeof(struct tsadc_port),
GFP_KERNEL);
if (uap == NULL)
dev_err(&data->pdev->dev,
"uap is not set %s,line=%d\n", __func__, __LINE__);
uap->pctl = devm_pinctrl_get(&data->pdev->dev);
uap->pins_default = pinctrl_lookup_state(uap->pctl, "default");
uap->pins_tsadc_int = pinctrl_lookup_state(uap->pctl, "tsadc_int");
pinctrl_select_state(uap->pctl, uap->pins_tsadc_int);
rockchip_tsadc_set_auto_temp(1);
data->monitored_sensors = NUM_MONITORED_SENSORS;
data->ops.read_sensor = rockchip_tsadc_get_temp;
data->ops.show_name = rockchip_show_name;
data->ops.show_label = rockchip_show_label;
data->ops.is_visible = NULL;
// rockchip_tsadc_set_auto_temp(0);
dev_info(&data->pdev->dev, "initialized\n");
return 0;
}
EXPORT_SYMBOL(rockchip_hwmon_init);
MODULE_DESCRIPTION("Driver for TSADC");
MODULE_AUTHOR("zhangqing, zhangqing@rock-chips.com");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("zhangqing <zhangqing@rock-chips.com>");
MODULE_DESCRIPTION("Driver for TSADC");