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mfd: rk806: Low power triggered system forced shutdown

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Change-Id: I38b7592525d81aa09672362208d7f5bc53539b4e
Signed-off-by: Shengfei Xu <xsf@rock-chips.com>
This commit is contained in:
Shengfei Xu
2024-09-26 10:52:01 +08:00
committed by Tao Huang
parent 5da753e40a
commit a3f03c79ff
1 changed files with 8 additions and 40 deletions
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48
drivers/mfd/rk806-core.c
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@@ -19,6 +19,7 @@
#define TSD_TEMP_160 0x01
#define VB_LO_ACT_SD 0x00
#define VB_LO_ACT_INT 0x01
#define VB_LO_3400MV 3400
static const struct reg_field rk806_reg_fields[] = {
[POWER_EN0] = REG_FIELD(0x00, 0, 7),
@@ -571,47 +572,13 @@ static int rk806_pinctrl_init(struct rk806 *rk806)
return 0;
}
static irqreturn_t rk806_vb_low_irq(int irq, void *rk806)
static void rk806_vb_force_shutdown_init(struct rk806 *rk806)
{
return IRQ_HANDLED;
}
static int rk806_low_power_irqs(struct rk806 *rk806)
{
struct rk806_platform_data *pdata;
int ret, vb_lo_irq;
pdata = rk806->pdata;
if (!pdata->low_voltage_threshold)
return 0;
rk806_field_write(rk806, VB_LO_ACT, VB_LO_ACT_INT);
struct rk806_platform_data *pdata = rk806->pdata;
rk806_field_write(rk806, VB_LO_ACT, VB_LO_ACT_SD);
rk806_field_write(rk806, VB_LO_SEL,
(pdata->low_voltage_threshold - 2800) / 100);
vb_lo_irq = regmap_irq_get_virq(rk806->irq_data, RK806_IRQ_VB_LO);
if (vb_lo_irq < 0) {
dev_err(rk806->dev, "vb_lo_irq request failed!\n");
return vb_lo_irq;
}
ret = devm_request_threaded_irq(rk806->dev, vb_lo_irq,
NULL,
rk806_vb_low_irq,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"rk806_vb_low", rk806);
if (ret) {
dev_err(rk806->dev, "vb_lo_irq request failed!\n");
return ret;
}
rk806->vb_lo_irq = vb_lo_irq;
disable_irq(rk806->vb_lo_irq);
enable_irq_wake(vb_lo_irq);
return 0;
}
static irqreturn_t rk806_vdc_irq(int irq, void *data)
@@ -685,13 +652,13 @@ static int rk806_parse_dt(struct rk806 *rk806)
"low_voltage_threshold",
&pdata->low_voltage_threshold);
if (ret < 0) {
pdata->low_voltage_threshold = 0;
pdata->low_voltage_threshold = VB_LO_3400MV;
dev_info(dev, "low_voltage_threshold missing!\n");
} else {
if ((pdata->low_voltage_threshold > 3500) ||
(pdata->low_voltage_threshold < 2800)) {
dev_err(dev, "low_voltage_threshold out [2800 3500]!\n");
pdata->low_voltage_threshold = 2800;
pdata->low_voltage_threshold = VB_LO_3400MV;
}
}
ret = device_property_read_u32(dev,
@@ -761,7 +728,7 @@ static int rk806_init(struct rk806 *rk806)
/* Digital output 2MHz clock force enable */
rk806_field_write(rk806, ENB2_2M, 0x01);
rk806_low_power_irqs(rk806);
rk806_vb_force_shutdown_init(rk806);
rk806_vdc_irqs_init(rk806);
return 0;
@@ -822,6 +789,7 @@ int rk806_device_init(struct rk806 *rk806)
dev_err(rk806->dev, "Failed to add IRQ chip: err = %d\n", ret);
return ret;
}
enable_irq_wake(rk806->irq);
ret = devm_mfd_add_devices(rk806->dev,
PLATFORM_DEVID_AUTO,