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pmic: stpmu1: add power switch off support

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Add sysreset support, and support power switch off request,
needed by poweroff command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2019-02-04 11:26:19 +01:00
parent db4ff0df65
commit 8811583e04
1 changed files with 46 additions and 0 deletions
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46
drivers/power/pmic/stpmic1.c
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@ -7,6 +7,9 @@
#include <dm.h> #include <dm.h>
#include <errno.h> #include <errno.h>
#include <i2c.h> #include <i2c.h>
#include <sysreset.h>
#include <dm/device.h>
#include <dm/lists.h>
#include <power/pmic.h> #include <power/pmic.h>
#include <power/stpmic1.h> #include <power/stpmic1.h>
@ -72,6 +75,10 @@ static int stpmic1_bind(struct udevice *dev)
dev_dbg(dev, "no child found\n"); dev_dbg(dev, "no child found\n");
#endif /* DM_REGULATOR */ #endif /* DM_REGULATOR */
if (CONFIG_IS_ENABLED(SYSRESET))
return device_bind_driver(dev, "stpmic1-sysreset",
"stpmic1-sysreset", NULL);
return 0; return 0;
} }
@ -93,3 +100,42 @@ U_BOOT_DRIVER(pmic_stpmic1) = {
.bind = stpmic1_bind, .bind = stpmic1_bind,
.ops = &stpmic1_ops, .ops = &stpmic1_ops,
}; };
#ifdef CONFIG_SYSRESET
static int stpmic1_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct udevice *pmic_dev;
int ret;
if (type != SYSRESET_POWER)
return -EPROTONOSUPPORT;
ret = uclass_get_device_by_driver(UCLASS_PMIC,
DM_GET_DRIVER(pmic_stpmic1),
&pmic_dev);
if (ret)
return -EOPNOTSUPP;
ret = pmic_reg_read(pmic_dev, STPMIC1_MAIN_CR);
if (ret < 0)
return ret;
ret = pmic_reg_write(pmic_dev, STPMIC1_MAIN_CR,
ret | STPMIC1_SWOFF | STPMIC1_RREQ_EN);
if (ret < 0)
return ret;
return -EINPROGRESS;
}
static struct sysreset_ops stpmic1_sysreset_ops = {
.request = stpmic1_sysreset_request,
};
U_BOOT_DRIVER(stpmic1_sysreset) = {
.name = "stpmic1-sysreset",
.id = UCLASS_SYSRESET,
.ops = &stpmic1_sysreset_ops,
};
#endif