openwrtv3/target/linux/brcm63xx/patches-3.14/377-MIPS-BCM63XX-register-lookup-for-ephy-reset-gpio.patch

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
@@ -59,7 +59,7 @@ 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
@@ -278,9 +278,10 @@ 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);
+	}
 
 	/* count number of BUTTONs defined by this device */
 	while (button_count < ARRAY_SIZE(board.buttons) && board.buttons[button_count].desc)
--- 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/driver.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/driver.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
@@ -4,6 +4,7 @@
 #include <linux/types.h>
 #include <linux/gpio.h>
 #include <linux/gpio_keys.h>
+#include <linux/gpio/driver.h>
 #include <linux/leds.h>
 #include <bcm63xx_dev_enet.h>
 #include <bcm63xx_dev_usb_usbd.h>
@@ -58,8 +59,8 @@ 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;