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Groups > linux.kernel > #1536220
| From | Vivien Didelot <vivien.didelot@savoirfairelinux.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 net-next v2 2/4] net: dsa: mv88e6xxx: add helper to hardware reset |
| Date | 2016-12-05 17:30 +0100 |
| Message-ID | <sL4jo-6RL-23@gated-at.bofh.it> (permalink) |
| References | <sL4jo-6RL-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Add an helper to toggle the eventual GPIO connected to the reset pin.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/net/dsa/mv88e6xxx/chip.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 1d4d3be..27dfb5d 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2356,6 +2356,19 @@ static void mv88e6xxx_port_bridge_leave(struct dsa_switch *ds, int port)
mutex_unlock(&chip->reg_lock);
}
+static void mv88e6xxx_hardware_reset(struct mv88e6xxx_chip *chip)
+{
+ struct gpio_desc *gpiod = chip->reset;
+
+ /* If there is a GPIO connected to the reset pin, toggle it */
+ if (gpiod) {
+ gpiod_set_value_cansleep(gpiod, 1);
+ usleep_range(10000, 20000);
+ gpiod_set_value_cansleep(gpiod, 0);
+ usleep_range(10000, 20000);
+ }
+}
+
static int mv88e6xxx_disable_ports(struct mv88e6xxx_chip *chip)
{
int i, err;
@@ -2380,7 +2393,6 @@ static int mv88e6xxx_switch_reset(struct mv88e6xxx_chip *chip)
{
bool ppu_active = mv88e6xxx_has(chip, MV88E6XXX_FLAG_PPU_ACTIVE);
u16 is_reset = (ppu_active ? 0x8800 : 0xc800);
- struct gpio_desc *gpiod = chip->reset;
unsigned long timeout;
u16 reg;
int err;
@@ -2389,13 +2401,7 @@ static int mv88e6xxx_switch_reset(struct mv88e6xxx_chip *chip)
if (err)
return err;
- /* If there is a gpio connected to the reset pin, toggle it */
- if (gpiod) {
- gpiod_set_value_cansleep(gpiod, 1);
- usleep_range(10000, 20000);
- gpiod_set_value_cansleep(gpiod, 0);
- usleep_range(10000, 20000);
- }
+ mv88e6xxx_hardware_reset(chip);
/* Reset the switch. Keep the PPU active if requested. The PPU
* needs to be active to support indirect phy register access
--
2.10.2
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[PATCH v2 net-next v2 0/4] net: dsa: mv88e6xxx: rework reset and PPU code Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2016-12-05 17:30 +0100
[PATCH v2 net-next v2 4/4] net: dsa: mv88e6xxx: add PPU operations Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2016-12-05 17:30 +0100
Re: [PATCH v2 net-next v2 4/4] net: dsa: mv88e6xxx: add PPU operations Stefan Eichenberger <eichest@gmail.com> - 2016-12-05 22:10 +0100
Re: [PATCH v2 net-next v2 4/4] net: dsa: mv88e6xxx: add PPU operations Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2016-12-05 23:20 +0100
Re: [PATCH v2 net-next v2 4/4] net: dsa: mv88e6xxx: add PPU operations Stefan Eichenberger <eichest@gmail.com> - 2016-12-06 13:30 +0100
[PATCH v2 net-next v2 2/4] net: dsa: mv88e6xxx: add helper to hardware reset Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2016-12-05 17:30 +0100
[PATCH v2 net-next v2 1/4] net: dsa: mv88e6xxx: add helper to disable ports Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2016-12-05 17:40 +0100
[PATCH v2 net-next v2 3/4] net: dsa: mv88e6xxx: add a soft reset operation Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2016-12-05 17:40 +0100
Re: [PATCH v2 net-next v2 3/4] net: dsa: mv88e6xxx: add a soft reset operation Stefan Eichenberger <eichest@gmail.com> - 2016-12-05 22:30 +0100
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