diff options
| author | Andrew Lunn <andrew@lunn.ch> | 2016-05-10 23:27:22 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-11 19:36:28 -0400 |
| commit | 52638f71fcff9386fe64c83a18a129b122333fdf (patch) | |
| tree | 253f15285b3a7bd4c02ed4a7681d0643bea9578c /drivers | |
| parent | 14c7b3c3877075e6df22e071d4619cbdeac82ffd (diff) | |
dsa: Move gpio reset into switch driver
Resetting the switch is something the driver does, not the framework.
So move the parsing of this property into the driver.
There are no in kernel users of this property, so moving it does not
break anything. There is however a board which will make use of this
property making its way into the kernel.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx.c | 14 | ||||
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx.h | 7 |
2 files changed, 20 insertions, 1 deletions
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c index ae1cb191a0e0..e7e07eb7091d 100644 --- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -2582,7 +2582,7 @@ static int mv88e6xxx_switch_reset(struct mv88e6xxx_priv_state *ps) { bool ppu_active = mv88e6xxx_has(ps, MV88E6XXX_FLAG_PPU_ACTIVE); u16 is_reset = (ppu_active ? 0x8800 : 0xc800); - struct gpio_desc *gpiod = ps->ds->pd->reset; + struct gpio_desc *gpiod = ps->reset; unsigned long timeout; int ret; int i; @@ -3634,6 +3634,7 @@ int mv88e6xxx_probe(struct mdio_device *mdiodev) struct mv88e6xxx_priv_state *ps; int id, prod_num, rev; struct dsa_switch *ds; + int err; ds = devm_kzalloc(dev, sizeof(*ds) + sizeof(*ps), GFP_KERNEL); if (!ds) @@ -3663,6 +3664,17 @@ int mv88e6xxx_probe(struct mdio_device *mdiodev) if (!ps->info) return -ENODEV; + ps->reset = devm_gpiod_get(&mdiodev->dev, "reset", GPIOD_ASIS); + if (IS_ERR(ps->reset)) { + err = PTR_ERR(ps->reset); + if (err == -ENOENT) { + /* Optional, so not an error */ + ps->reset = NULL; + } else { + return err; + } + } + dev_set_drvdata(dev, ds); dev_info(dev, "switch 0x%x probed: %s, revision %u\n", diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h index 5f09a4ea3cc5..9ef7673f0c61 100644 --- a/drivers/net/dsa/mv88e6xxx.h +++ b/drivers/net/dsa/mv88e6xxx.h @@ -12,6 +12,7 @@ #define __MV88E6XXX_H #include <linux/if_vlan.h> +#include <linux/gpio/consumer.h> #ifndef UINT64_MAX #define UINT64_MAX (u64)(~((u64)0)) @@ -595,6 +596,12 @@ struct mv88e6xxx_priv_state { DECLARE_BITMAP(port_state_update_mask, DSA_MAX_PORTS); struct work_struct bridge_work; + + /* A switch may have a GPIO line tied to its reset pin. Parse + * this from the device tree, and use it before performing + * switch soft reset. + */ + struct gpio_desc *reset; }; enum stat_type { |