mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 23:12:32 +00:00
b0d99b77e5
Refresh patches. Update patch that no longer applied: oxnas/0072-mtd-backport-v4.7-0day-patches-from-Boris.patch Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> Tested-by: Rosen Penev <rosenp@gmail.com>
121 lines
3.6 KiB
Diff
121 lines
3.6 KiB
Diff
From d396e84c56047b303cac378dde4b2e5cc430b336 Mon Sep 17 00:00:00 2001
|
|
From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
|
|
Date: Mon, 12 Jun 2017 23:55:38 +0300
|
|
Subject: [PATCH] mdio_bus: handle only single PHY reset GPIO
|
|
|
|
Commit 4c5e7a2c0501 ("dt-bindings: mdio: Clarify binding document")
|
|
declared that a MDIO reset GPIO property should have only a single GPIO
|
|
reference/specifier, however the supporting code was left intact, still
|
|
burdening the kernel with now apparently useless loops -- get rid of them.
|
|
|
|
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
---
|
|
drivers/net/phy/mdio_bus.c | 53 +++++++++++++++++-----------------------------
|
|
drivers/of/of_mdio.c | 1 -
|
|
include/linux/phy.h | 6 ++----
|
|
3 files changed, 21 insertions(+), 39 deletions(-)
|
|
|
|
--- a/drivers/net/phy/mdio_bus.c
|
|
+++ b/drivers/net/phy/mdio_bus.c
|
|
@@ -279,33 +279,22 @@ int __mdiobus_register(struct mii_bus *b
|
|
|
|
mutex_init(&bus->mdio_lock);
|
|
|
|
- /* de-assert bus level PHY GPIO resets */
|
|
- if (bus->num_reset_gpios > 0) {
|
|
- bus->reset_gpiod = devm_kcalloc(&bus->dev,
|
|
- bus->num_reset_gpios,
|
|
- sizeof(struct gpio_desc *),
|
|
- GFP_KERNEL);
|
|
- if (!bus->reset_gpiod)
|
|
- return -ENOMEM;
|
|
- }
|
|
-
|
|
- for (i = 0; i < bus->num_reset_gpios; i++) {
|
|
- gpiod = devm_gpiod_get_index(&bus->dev, "reset", i,
|
|
- GPIOD_OUT_LOW);
|
|
- if (IS_ERR(gpiod)) {
|
|
- err = PTR_ERR(gpiod);
|
|
- if (err != -ENOENT) {
|
|
- dev_err(&bus->dev,
|
|
- "mii_bus %s couldn't get reset GPIO\n",
|
|
- bus->id);
|
|
- return err;
|
|
- }
|
|
- } else {
|
|
- bus->reset_gpiod[i] = gpiod;
|
|
- gpiod_set_value_cansleep(gpiod, 1);
|
|
- udelay(bus->reset_delay_us);
|
|
- gpiod_set_value_cansleep(gpiod, 0);
|
|
+ /* de-assert bus level PHY GPIO reset */
|
|
+ gpiod = devm_gpiod_get(&bus->dev, "reset", GPIOD_OUT_LOW);
|
|
+ if (IS_ERR(gpiod)) {
|
|
+ err = PTR_ERR(gpiod);
|
|
+ if (err != -ENOENT) {
|
|
+ dev_err(&bus->dev,
|
|
+ "mii_bus %s couldn't get reset GPIO\n",
|
|
+ bus->id);
|
|
+ return err;
|
|
}
|
|
+ } else {
|
|
+ bus->reset_gpiod = gpiod;
|
|
+
|
|
+ gpiod_set_value_cansleep(gpiod, 1);
|
|
+ udelay(bus->reset_delay_us);
|
|
+ gpiod_set_value_cansleep(gpiod, 0);
|
|
}
|
|
|
|
if (bus->reset)
|
|
@@ -337,10 +326,8 @@ error:
|
|
}
|
|
|
|
/* Put PHYs in RESET to save power */
|
|
- for (i = 0; i < bus->num_reset_gpios; i++) {
|
|
- if (bus->reset_gpiod[i])
|
|
- gpiod_set_value_cansleep(bus->reset_gpiod[i], 1);
|
|
- }
|
|
+ if (bus->reset_gpiod)
|
|
+ gpiod_set_value_cansleep(bus->reset_gpiod, 1);
|
|
|
|
device_del(&bus->dev);
|
|
return err;
|
|
@@ -363,10 +350,8 @@ void mdiobus_unregister(struct mii_bus *
|
|
}
|
|
|
|
/* Put PHYs in RESET to save power */
|
|
- for (i = 0; i < bus->num_reset_gpios; i++) {
|
|
- if (bus->reset_gpiod[i])
|
|
- gpiod_set_value_cansleep(bus->reset_gpiod[i], 1);
|
|
- }
|
|
+ if (bus->reset_gpiod)
|
|
+ gpiod_set_value_cansleep(bus->reset_gpiod, 1);
|
|
|
|
device_del(&bus->dev);
|
|
}
|
|
--- a/drivers/of/of_mdio.c
|
|
+++ b/drivers/of/of_mdio.c
|
|
@@ -145,7 +145,6 @@ int of_mdiobus_register(struct mii_bus *
|
|
/* Get bus level PHY reset GPIO details */
|
|
mdio->reset_delay_us = DEFAULT_GPIO_RESET_DELAY;
|
|
of_property_read_u32(np, "reset-delay-us", &mdio->reset_delay_us);
|
|
- mdio->num_reset_gpios = of_gpio_named_count(np, "reset-gpios");
|
|
|
|
/* Register the MDIO bus */
|
|
rc = mdiobus_register(mdio);
|
|
--- a/include/linux/phy.h
|
|
+++ b/include/linux/phy.h
|
|
@@ -190,10 +190,8 @@ struct mii_bus {
|
|
|
|
/* GPIO reset pulse width in microseconds */
|
|
int reset_delay_us;
|
|
- /* Number of reset GPIOs */
|
|
- int num_reset_gpios;
|
|
- /* Array of RESET GPIO descriptors */
|
|
- struct gpio_desc **reset_gpiod;
|
|
+ /* RESET GPIO descriptor pointer */
|
|
+ struct gpio_desc *reset_gpiod;
|
|
};
|
|
#define to_mii_bus(d) container_of(d, struct mii_bus, dev)
|
|
|