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From d13bdf92ec885105cf107183f8464c40e5f3b93b Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Sat, 21 Feb 2015 17:21:59 +0100
Subject: [PATCH 4/6] MIPS: BCM63XX: register lookup for ephy-reset gpio
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
arch/mips/bcm63xx/boards/board_bcm963xx.c | 2 +-
arch/mips/bcm63xx/boards/board_common.c | 7 +++--
arch/mips/bcm63xx/gpio.c | 32 ++++++++++++++++++++
arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h | 2 ++
.../mips/include/asm/mach-bcm63xx/board_bcm963xx.h | 5 +--
5 files changed, 42 insertions(+), 6 deletions(-)
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -54,7 +54,7 @@ static struct board_info __initdata boar
},
.ephy_reset_gpio = 36,
- .ephy_reset_gpio_flags = GPIOF_INIT_HIGH,
+ .ephy_reset_gpio_flags = GPIO_ACTIVE_LOW,
};
#endif
--- a/arch/mips/bcm63xx/boards/board_common.c
+++ b/arch/mips/bcm63xx/boards/board_common.c
@@ -257,9 +257,10 @@ int __init board_register_devices(void)
platform_device_register(&bcm63xx_gpio_leds);
- if (board.ephy_reset_gpio && board.ephy_reset_gpio_flags)
- gpio_request_one(board.ephy_reset_gpio,
- board.ephy_reset_gpio_flags, "ephy-reset");
+ if (board.ephy_reset_gpio && board.ephy_reset_gpio_flags) {
+ bcm63xx_gpio_ephy_reset(board.ephy_reset_gpio,
+ board.ephy_reset_gpio_flags);
+ }
return 0;
}
--- a/arch/mips/bcm63xx/gpio.c
+++ b/arch/mips/bcm63xx/gpio.c
@@ -8,15 +8,24 @@
* Copyright (C) Jonas Gorski <jogo@openwrt.org>
*/
+#include <asm/addrspace.h>
+
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/basic_mmio_gpio.h>
#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_gpio.h>
#include <bcm63xx_regs.h>
+/* for registering lookups; make them large enough to hold OF names */
+static char *gpio_chip_labels[] = {
+ "xxxxxxxx.gpio-controller",
+ "xxxxxxxx.gpio-controller",
+};
+
static void __init bcm63xx_gpio_init_one(int id, int dir, int data, int ngpio)
{
struct resource res[2];
@@ -40,6 +49,7 @@ static void __init bcm63xx_gpio_init_one
pdata.base = id * 32;
pdata.ngpio = ngpio;
+ sprintf(gpio_chip_labels[id], "bcm63xx-gpio.%d", id);
platform_device_register_resndata(NULL, "bcm63xx-gpio", id, res, 2,
&pdata, sizeof(pdata));
}
@@ -64,3 +74,25 @@ int __init bcm63xx_gpio_init(void)
return 0;
}
+
+static struct gpiod_lookup_table ephy_reset = {
+ .dev_id = "bcm63xx_enet_shared.0",
+ .table = {
+ { /* filled at runtime */ },
+ { },
+ },
+};
+
+
+void bcm63xx_gpio_ephy_reset(int hw_gpio, enum gpio_lookup_flags flags)
+{
+ if (ephy_reset.table[0].chip_label)
+ return;
+
+ ephy_reset.table[0].chip_label = gpio_chip_labels[hw_gpio / 32];
+ ephy_reset.table[0].chip_hwnum = hw_gpio % 32;
+ ephy_reset.table[0].con_id = "ephy-reset";
+ ephy_reset.table[0].flags = flags;
+
+ gpiod_add_lookup_table(&ephy_reset);
+}
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
@@ -2,9 +2,11 @@
#define BCM63XX_GPIO_H
#include <linux/init.h>
+#include <linux/gpio/machine.h>
#include <bcm63xx_cpu.h>
int __init bcm63xx_gpio_init(void);
+void bcm63xx_gpio_ephy_reset(int hw_gpio, enum gpio_lookup_flags flags);
static inline unsigned long bcm63xx_gpio_count(void)
{
--- a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
+++ b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
@@ -3,6 +3,7 @@
#include <linux/types.h>
#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
#include <linux/leds.h>
#include <bcm63xx_dev_enet.h>
#include <bcm63xx_dev_usb_usbd.h>
@@ -54,8 +55,8 @@ struct board_info {
/* External PHY reset GPIO */
unsigned int ephy_reset_gpio;
- /* External PHY reset GPIO flags from gpio.h */
- unsigned long ephy_reset_gpio_flags;
+ /* External PHY reset GPIO flags from gpio/machine.h */
+ enum gpio_lookup_flags ephy_reset_gpio_flags;
/* fallback sprom config */
struct fallback_sprom_data fallback_sprom;
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