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power: reset: linkstation-poweroff: prepare for new devices

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This commit prepare driver for another device support.

New power_off_cfg structure describes two most important things: name of
mdio bus and pointer to register setting function. It allow to add new
device with different mdio bus node and other phy register config.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Pawel Dembicki
2021-06-24 11:18:11 +02:00
committed by Sebastian Reichel
parent ecdf7e7a1d
commit e2f471efe1
1 changed files with 30 additions and 7 deletions
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37
drivers/power/reset/linkstation-poweroff.c
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@ -29,11 +29,21 @@
#define LED2_FORCE_ON (0x8 << 8)
#define LEDMASK GENMASK(11,8)
static struct phy_device *phydev;
struct power_off_cfg {
char *mdio_node_name;
void (*phy_set_reg)(bool restart);
};
static void mvphy_reg_intn(u16 data)
static struct phy_device *phydev;
static const struct power_off_cfg *cfg;
static void linkstation_mvphy_reg_intn(bool restart)
{
int rc = 0, saved_page;
u16 data = 0;
if (restart)
data = MII_88E1318S_PHY_LED_TCR_FORCE_INT;
saved_page = phy_select_page(phydev, MII_MARVELL_LED_PAGE);
if (saved_page < 0)
@ -66,11 +76,16 @@ err:
dev_err(&phydev->mdio.dev, "Write register failed, %d\n", rc);
}
static const struct power_off_cfg linkstation_power_off_cfg = {
.mdio_node_name = "mdio",
.phy_set_reg = linkstation_mvphy_reg_intn,
};
static int linkstation_reboot_notifier(struct notifier_block *nb,
unsigned long action, void *unused)
{
if (action == SYS_RESTART)
mvphy_reg_intn(MII_88E1318S_PHY_LED_TCR_FORCE_INT);
cfg->phy_set_reg(true);
return NOTIFY_DONE;
}
@ -82,14 +97,18 @@ static struct notifier_block linkstation_reboot_nb = {
static void linkstation_poweroff(void)
{
unregister_reboot_notifier(&linkstation_reboot_nb);
mvphy_reg_intn(0);
cfg->phy_set_reg(false);
kernel_restart("Power off");
}
static const struct of_device_id ls_poweroff_of_match[] = {
{ .compatible = "buffalo,ls421d" },
{ .compatible = "buffalo,ls421de" },
{ .compatible = "buffalo,ls421d",
.data = &linkstation_power_off_cfg,
},
{ .compatible = "buffalo,ls421de",
.data = &linkstation_power_off_cfg,
},
{ },
};
@ -97,13 +116,17 @@ static int __init linkstation_poweroff_init(void)
{
struct mii_bus *bus;
struct device_node *dn;
const struct of_device_id *match;
dn = of_find_matching_node(NULL, ls_poweroff_of_match);
if (!dn)
return -ENODEV;
of_node_put(dn);
dn = of_find_node_by_name(NULL, "mdio");
match = of_match_node(ls_poweroff_of_match, dn);
cfg = match->data;
dn = of_find_node_by_name(NULL, cfg->mdio_node_name);
if (!dn)
return -ENODEV;