From: Phil Elwell <phil@raspberrypi.org>
To: Woojung Huh <woojung.huh@microchip.com>,
Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
"David S. Miller" <davem@davemloft.net>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linus Walleij <linus.walleij@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Randy Dunlap <rdunlap@infradead.org>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Cc: Phil Elwell <phil@raspberrypi.org>
Subject: [PATCH 3/4] lan78xx: Read LED modes from Device Tree
Date: Thu, 12 Apr 2018 14:55:35 +0100 [thread overview]
Message-ID: <1523541336-145953-4-git-send-email-phil@raspberrypi.org> (raw)
In-Reply-To: <1523541336-145953-1-git-send-email-phil@raspberrypi.org>
Add support for DT property "microchip,led-modes", a vector of two
cells (u32s) in the range 0-15, each of which sets the mode for one
of the two LEDs. Some possible values are:
0=link/activity 1=link1000/activity
2=link100/activity 3=link10/activity
4=link100/1000/activity 5=link10/1000/activity
6=link10/100/activity 14=off 15=on
Also use the presence of the DT property to indicate that the
LEDs should be enabled - necessary in the event that no valid OTP
or EEPROM is available.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/net/usb/lan78xx.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index d98397b..ffb483d 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2008,6 +2008,7 @@ static int lan78xx_phy_init(struct lan78xx_net *dev)
{
int ret;
u32 mii_adv;
+ u32 led_modes[2];
struct phy_device *phydev;
phydev = phy_find_first(dev->mdiobus);
@@ -2097,6 +2098,25 @@ static int lan78xx_phy_init(struct lan78xx_net *dev)
(void)lan78xx_set_eee(dev->net, &edata);
}
+ if (!of_property_read_u32_array(dev->udev->dev.of_node,
+ "microchip,led-modes",
+ led_modes, ARRAY_SIZE(led_modes))) {
+ u32 reg;
+ int i;
+
+ reg = phy_read(phydev, 0x1d);
+ for (i = 0; i < ARRAY_SIZE(led_modes); i++) {
+ reg &= ~(0xf << (i * 4));
+ reg |= (led_modes[i] & 0xf) << (i * 4);
+ }
+ (void)phy_write(phydev, 0x1d, reg);
+
+ /* Ensure the LEDs are enabled */
+ lan78xx_read_reg(dev, HW_CFG, ®);
+ reg |= HW_CFG_LED0_EN_ | HW_CFG_LED1_EN_;
+ lan78xx_write_reg(dev, HW_CFG, reg);
+ }
+
genphy_config_aneg(phydev);
dev->fc_autoneg = phydev->autoneg;
--
2.7.4
next prev parent reply other threads:[~2018-04-12 13:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-12 13:55 [PATCH 0/4] lan78xx: Read configuration from Device Tree Phil Elwell
2018-04-12 13:55 ` [PATCH 1/4] lan78xx: Read MAC address from DT if present Phil Elwell
2018-04-12 14:06 ` Andrew Lunn
2018-04-12 14:18 ` Phil Elwell
2018-04-12 13:55 ` [PATCH 2/4] lan78xx: Read initial EEE setting from Device Tree Phil Elwell
2018-04-12 14:16 ` Andrew Lunn
2018-04-12 15:17 ` Phil Elwell
2018-04-12 13:55 ` Phil Elwell [this message]
2018-04-12 14:26 ` [PATCH 3/4] lan78xx: Read LED modes " Andrew Lunn
2018-04-12 14:30 ` Phil Elwell
2018-04-12 14:36 ` Andrew Lunn
2018-04-12 15:21 ` Woojung.Huh
2018-04-12 13:55 ` [PATCH 4/4] dt-bindings: Document the DT bindings for lan78xx Phil Elwell
2018-04-12 14:04 ` Andrew Lunn
2018-04-12 14:10 ` Phil Elwell
2018-04-12 14:17 ` Andrew Lunn
2018-04-12 14:30 ` Andrew Lunn
2018-04-12 14:33 ` Phil Elwell
2018-04-16 19:22 ` Rob Herring
2018-04-17 11:35 ` Phil Elwell
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1523541336-145953-4-git-send-email-phil@raspberrypi.org \
--to=phil@raspberrypi.org \
--cc=UNGLinuxDriver@microchip.com \
--cc=akpm@linux-foundation.org \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=linus.walleij@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mchehab@kernel.org \
--cc=netdev@vger.kernel.org \
--cc=rdunlap@infradead.org \
--cc=robh+dt@kernel.org \
--cc=woojung.huh@microchip.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).