OpenWrt – Rev 4
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From c291443dc97dadcf0c6afd04688a7d9f79a221b5 Mon Sep 17 00:00:00 2001
From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Date: Wed, 29 Aug 2012 22:08:16 +0200
Subject: net: switchlib: add driver for Lantiq ADM6996I switch family
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
--- a/drivers/net/switch/Makefile
+++ b/drivers/net/switch/Makefile
@@ -11,6 +11,7 @@ LIB := $(obj)libswitch.o
COBJS-$(CONFIG_SWITCH_MULTI) += switch.o
COBJS-$(CONFIG_SWITCH_PSB697X) += psb697x.o
+COBJS-$(CONFIG_SWITCH_ADM6996I) += adm6996i.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
--- /dev/null
+++ b/drivers/net/switch/adm6996i.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2011-2013 Daniel Schwierzeck, daniel.schwierzeck@gmail.com
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <switch.h>
+#include <miiphy.h>
+
+#define ADM6996I_CHIPID0 0x1020
+#define ADM6996I_CHIPID1 0x0007
+#define ADM6996I_PORT_COUNT 6
+
+#define ADM6996I_REG_P0BC 0x001 /* P0 Basic Control */
+#define ADM6996I_REG_P1BC 0x003 /* P1 Basic Control */
+#define ADM6996I_REG_P2BC 0x005 /* P2 Basic Control */
+#define ADM6996I_REG_P3BC 0x007 /* P3 Basic Control */
+#define ADM6996I_REG_P4BC 0x008 /* P4 Basic Control */
+#define ADM6996I_REG_P5BC 0x009 /* P5 Basic Control */
+
+#define ADM6996I_REG_P0EC 0x002 /* P0 Extended Control */
+#define ADM6996I_REG_P1EC 0x002 /* P1 Extended Control */
+#define ADM6996I_REG_P2EC 0x004 /* P2 Extended Control */
+#define ADM6996I_REG_P3EC 0x004 /* P3 Extended Control */
+#define ADM6996I_REG_P4EC 0x006 /* P4 Extended Control */
+#define ADM6996I_REG_P5EC 0x006 /* P5 Extended Control */
+
+#define ADM6996I_REG_SC4 0x012 /* System Control 4 */
+
+#define ADM6996I_REG_CI0 0xA0 /* Chip Identifier 0 */
+#define ADM6996I_REG_CI1 0xA1 /* Chip Identifier 1 */
+
+#define ADM6996I_REG_PXBC_DEFAULT 0x040F
+#define ADM6996I_REG_PXBC_CROSS_EE (1 << 15)
+#define ADM6996I_REG_PXBC_PD (1 << 5)
+
+#define ADM6996I_REG_SC4_DEFAULT 0x3600
+#define ADM6996I_REG_SC4_LED_ENABLE (1 << 1)
+
+#define ADM6996I_REG_CI0_PC_MASK 0xFFF0
+#define ADM6996I_REG_CI0_VN_MASK 0xF
+#define ADM6996I_REG_CI1_PC_MASK 0xF
+
+
+static inline int adm6996i_mii_read(struct mii_dev *bus, u16 reg)
+{
+ int ret;
+
+ ret = bus->read(bus, (reg >> 5) & 0x1f, MDIO_DEVAD_NONE, reg & 0x1f);
+
+ return ret;
+}
+
+static inline int adm6996i_mii_write(struct mii_dev *bus, u16 reg, u16 val)
+{
+ int ret;
+
+ ret = bus->write(bus, (reg >> 5) & 0x1f, MDIO_DEVAD_NONE,
+ reg & 0x1f, val);
+
+ return ret;
+}
+
+static int adm6996i_probe(struct switch_device *dev)
+{
+ struct mii_dev *bus = dev->bus;
+ u16 ci0, ci1;
+
+ ci0 = adm6996i_mii_read(bus, ADM6996I_REG_CI0);
+ ci1 = adm6996i_mii_read(bus, ADM6996I_REG_CI1);
+
+ ci0 &= ADM6996I_REG_CI0_PC_MASK;
+ ci1 &= ADM6996I_REG_CI1_PC_MASK;
+
+ if (ci0 == ADM6996I_CHIPID0 && ci1 == ADM6996I_CHIPID1)
+ return 0;
+
+ return 1;
+}
+
+static void adm6996i_setup(struct switch_device *dev)
+{
+ struct mii_dev *bus = dev->bus;
+ u16 val;
+
+ /*
+ * Write default values (Port enable, 100 Mbps, Full Duplex,
+ * Auto negotiation, Flow control) and enable crossover auto-detect
+ */
+ val = ADM6996I_REG_PXBC_DEFAULT | ADM6996I_REG_PXBC_CROSS_EE;
+ adm6996i_mii_write(bus, ADM6996I_REG_P0BC, val);
+ adm6996i_mii_write(bus, ADM6996I_REG_P1BC, val);
+ adm6996i_mii_write(bus, ADM6996I_REG_P2BC, val);
+ adm6996i_mii_write(bus, ADM6996I_REG_P3BC, val);
+ adm6996i_mii_write(bus, ADM6996I_REG_P4BC, val);
+ adm6996i_mii_write(bus, ADM6996I_REG_P5BC, val);
+
+ val = ADM6996I_REG_SC4_DEFAULT | ADM6996I_REG_SC4_LED_ENABLE;
+ adm6996i_mii_write(bus, ADM6996I_REG_SC4, val);
+}
+
+static struct switch_driver adm6996i_drv = {
+ .name = "adm6996i",
+};
+
+void switch_adm6996i_init(void)
+{
+ /* For archs with manual relocation */
+ adm6996i_drv.probe = adm6996i_probe;
+ adm6996i_drv.setup = adm6996i_setup;
+
+ switch_driver_register(&adm6996i_drv);
+}
--- a/drivers/net/switch/switch.c
+++ b/drivers/net/switch/switch.c
@@ -20,6 +20,9 @@ void switch_init(void)
#if defined(CONFIG_SWITCH_PSB697X)
switch_psb697x_init();
#endif
+#if defined(CONFIG_SWITCH_ADM6996I)
+ switch_adm6996i_init();
+#endif
board_switch_init();
}
--- a/include/switch.h
+++ b/include/switch.h
@@ -98,6 +98,7 @@ static inline void switch_setup(struct s
/* Init functions for supported Switch drivers */
extern void switch_psb697x_init(void);
+extern void switch_adm6996i_init(void);
#endif /* __SWITCH_H */