Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 20:22:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

power: reset: linkstation-poweroff: add new device

Browse Source 
This commit introduces support for NETGEAR ReadyNAS Duo v2.
This device use bit 4 of LED[2:0] Polarity Control Register to indicate
AC Power loss.

For more details about AC loss detection in NETGEAR ReadyNAS Duo v2,
please look at the file:
RND_5.3.13_WW.src/u-boot/board/mv_feroceon/mv_hal/usibootup/usibootup.c
from Netgear GPL sources.

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 11:18:12 +02:00 committed by Sebastian Reichel
parent e2f471efe1
commit 0c77ec3da8
1 changed files with 42 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/power/reset/linkstation-poweroff.c
View File

@ -19,6 +19,7 @@
#define MII_MARVELL_PHY_PAGE 22
#define MII_PHY_LED_CTRL 16
#define MII_PHY_LED_POL_CTRL 17
#define MII_88E1318S_PHY_LED_TCR 18
#define MII_88E1318S_PHY_WOL_CTRL 16
#define MII_M1011_IEVENT 19
@ -29,6 +30,8 @@
#define LED2_FORCE_ON (0x8 << 8)
#define LEDMASK GENMASK(11,8)
#define MII_88E1318S_PHY_LED_POL_LED2 BIT(4)
struct power_off_cfg {
char *mdio_node_name;
void (*phy_set_reg)(bool restart);
@ -76,11 +79,47 @@ err:
dev_err(&phydev->mdio.dev, "Write register failed, %d\n", rc);
}
static void readynas_mvphy_set_reg(bool restart)
{
int rc = 0, saved_page;
u16 data = 0;
if (restart)
data = MII_88E1318S_PHY_LED_POL_LED2;
saved_page = phy_select_page(phydev, MII_MARVELL_LED_PAGE);
if (saved_page < 0)
goto err;
/* Set the LED[2].0 Polarity bit to the required state */
__phy_modify(phydev, MII_PHY_LED_POL_CTRL,
MII_88E1318S_PHY_LED_POL_LED2, data);
if (!data) {
/* If WOL was enabled and a magic packet was received before powering
* off, we won't be able to wake up by sending another magic packet.
* Clear WOL status.
*/
__phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_MARVELL_WOL_PAGE);
__phy_set_bits(phydev, MII_88E1318S_PHY_WOL_CTRL,
MII_88E1318S_PHY_WOL_CTRL_CLEAR_WOL_STATUS);
}
err:
rc = phy_restore_page(phydev, saved_page, rc);
if (rc < 0)
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 const struct power_off_cfg readynas_power_off_cfg = {
.mdio_node_name = "mdio-bus",
.phy_set_reg = readynas_mvphy_set_reg,
};
static int linkstation_reboot_notifier(struct notifier_block *nb,
unsigned long action, void *unused)
{
@ -109,6 +148,9 @@ static const struct of_device_id ls_poweroff_of_match[] = {
{ .compatible = "buffalo,ls421de",
.data = &linkstation_power_off_cfg,
},
{ .compatible = "netgear,readynas-duo-v2",
.data = &readynas_power_off_cfg,
},
{ },
};