'twl4030-poweroff' module was removed sometime back. This patch adds back
this capability.
We don't really need a whole new driver just for initializing one pointer.
Initialize pm_power_off in twl4030-core.c
Signed-off-by: Vimal Singh <[email protected]>
CC: Felipe Balbi <[email protected]>
---
This patch is compile tested only.
This patch is based on Felipe Balbi's patch posted earlier:
http://markmail.org/message/ts4if3553qnauket
drivers/mfd/twl4030-core.c | 31 +++++++++++++++++++++++++++++++
1 files changed, 31 insertions(+)
Index: linux-omap-2.6/drivers/mfd/twl4030-core.c
===================================================================
--- linux-omap-2.6.orig/drivers/mfd/twl4030-core.c
+++ linux-omap-2.6/drivers/mfd/twl4030-core.c
@@ -178,6 +178,10 @@
#define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
#define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
+/* for pm_power_off */
+#define PWR_P1_SW_EVENTS 0x10
+#define PWR_DEVOFF (1 << 0)
+
/*----------------------------------------------------------------------*/
/* is driver active, bound to a chip? */
@@ -754,6 +758,30 @@ static int twl4030_remove(struct i2c_cli
return 0;
}
+static void twl4030_poweroff(void)
+{
+ int err;
+ u8 val;
+
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &val,
+ PWR_P1_SW_EVENTS);
+ if (err) {
+ pr_err("%s: i2c error %d while reading TWL4030"
+ "PM_MASTER P1_SW_EVENTS\n",
+ DRIVER_NAME, err);
+ return;
+ }
+
+ val |= PWR_DEVOFF;
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, val,
+ PWR_P1_SW_EVENTS);
+ if (err)
+ pr_err("%s: i2c error %d while writing TWL4030"
+ "PM_MASTER P1_SW_EVENTS\n",
+ DRIVER_NAME, err);
+}
+
/* NOTE: this driver only handles a single twl4030/tps659x0 chip */
static int
twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
@@ -811,6 +839,9 @@ twl4030_probe(struct i2c_client *client,
goto fail;
}
+ /* initialize pm_power_off routine */
+ pm_power_off = twl4030_poweroff;
+
status = add_children(pdata, id->driver_data);
fail:
if (status < 0)