From: Domenico Andreoli <domenico.andreoli@xxxxxxxxx>
Proof of concept: tps65910 as provider of reset hooks.
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Olof Johansson <olof@xxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Domenico Andreoli <domenico.andreoli@xxxxxxxxx>
---
drivers/mfd/Kconfig | 1 +
drivers/mfd/tps65910.c | 16 ++++++++--------
2 files changed, 9 insertions(+), 8 deletions(-)
Index: b/drivers/mfd/Kconfig
===================================================================
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -769,6 +769,7 @@ config TPS65010
tristate "TI TPS6501x Power Management chips"
depends on I2C && GPIOLIB
default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
+ select MACHINE_RESET
help
If you say yes here you get support for the TPS6501x series of
Power Management chips. These include voltage regulators,
Index: b/drivers/mfd/tps65910.c
===================================================================
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -26,6 +26,7 @@
#include <linux/regmap.h>
#include <linux/mfd/tps65910.h>
#include <linux/of_device.h>
+#include <linux/machine_reset.h>
static struct resource rtc_resources[] = {
{
@@ -438,12 +439,9 @@ struct tps65910_board *tps65910_parse_dt
}
#endif
-static struct i2c_client *tps65910_i2c_client;
-static void tps65910_power_off(void)
+static void tps65910_power_off(void *dev)
{
- struct tps65910 *tps65910;
-
- tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);
+ struct tps65910 *tps65910 = dev_get_drvdata(dev);
if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
DEVCTRL_PWR_OFF_MASK) < 0)
@@ -501,9 +499,11 @@ static int tps65910_i2c_probe(struct i2c
tps65910_ck32k_init(tps65910, pmic_plat_data);
tps65910_sleepinit(tps65910, pmic_plat_data);
- if (pmic_plat_data->pm_off && !pm_power_off) {
- tps65910_i2c_client = i2c;
- pm_power_off = tps65910_power_off;
+ if (pmic_plat_data->pm_off) {
+ struct reset_hook hook;
+ reset_hook_init(&hook);
+ hook.power_off = tps65910_power_off;
+ set_machine_reset(RESET_POWER_OFF, &hook, &i2c->dev);
}
ret = mfd_add_devices(tps65910->dev, -1,
--
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