1 From 16b8c52f80f20e07866e397ff52ff9658766437b Mon Sep 17 00:00:00 2001
2 From: Luka Perkov <luka@openwrt.org>
3 Date: Wed, 29 Aug 2012 22:08:16 +0200
4 Subject: net: switchlib: add driver for Atheros AR8216
6 Signed-off-by: Luka Perkov <luka@openwrt.org>
7 Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
9 --- a/drivers/net/switch/Makefile
10 +++ b/drivers/net/switch/Makefile
11 @@ -13,6 +13,7 @@ LIB := $(obj)libswitch.o
12 COBJS-$(CONFIG_SWITCH_MULTI) += switch.o
13 COBJS-$(CONFIG_SWITCH_PSB697X) += psb697x.o
14 COBJS-$(CONFIG_SWITCH_ADM6996I) += adm6996i.o
15 +COBJS-$(CONFIG_SWITCH_AR8216) += ar8216.o
18 SRCS := $(COBJS:.o=.c)
20 +++ b/drivers/net/switch/ar8216.c
23 + * Copyright (C) 2012 Luka Perkov <luka@openwrt.org>
25 + * This file is released under the terms of GPL v2 and any later version.
26 + * See the file COPYING in the root directory of the source tree for details.
35 +#define BITS(_s, _n) (((1UL << (_n)) - 1) << _s)
37 +#define AR8216_REG_CTRL 0x0000
38 +#define AR8216_CTRL_REVISION BITS(0, 8)
39 +#define AR8216_CTRL_VERSION BITS(8, 8)
41 +#define AR8216_PROBE_RETRIES 10
43 +static void split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
46 + *r1 = regaddr & 0x1e;
49 + *r2 = regaddr & 0x7;
52 + *page = regaddr & 0x1ff;
55 +static int ar8216_mii_read(struct mii_dev *bus, u32 reg)
60 + split_addr(reg, &r1, &r2, &page);
62 + bus->write(bus, 0x18, MDIO_DEVAD_NONE, 0, page);
65 + lo = bus->read(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1);
66 + hi = bus->read(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1 + 1);
68 + return (hi << 16) | lo;
71 +static void ar8216_mii_write(struct mii_dev *bus, u16 reg, u32 val)
76 + split_addr((u32) reg, &r1, &r2, &r3);
78 + bus->write(bus, 0x18, MDIO_DEVAD_NONE, 0, r3);
82 + hi = (u16) (val >> 16);
83 + bus->write(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1 + 1, hi);
84 + bus->write(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1, lo);
87 +static int ar8216_probe(struct switch_device *dev)
89 + struct mii_dev *bus = dev->bus;
93 + val = ar8216_mii_read(bus, AR8216_REG_CTRL);
97 + id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
107 +static void ar8216_setup(struct switch_device *dev)
109 + struct mii_dev *bus = dev->bus;
111 + ar8216_mii_write(bus, 0x200, 0x200);
112 + ar8216_mii_write(bus, 0x300, 0x200);
113 + ar8216_mii_write(bus, 0x400, 0x200);
114 + ar8216_mii_write(bus, 0x500, 0x200);
115 + ar8216_mii_write(bus, 0x600, 0x7d);
116 + ar8216_mii_write(bus, 0x38, 0xc000050e);
117 + ar8216_mii_write(bus, 0x104, 0x4004);
118 + ar8216_mii_write(bus, 0x60, 0xffffffff);
119 + ar8216_mii_write(bus, 0x64, 0xaaaaaaaa);
120 + ar8216_mii_write(bus, 0x68, 0x55555555);
121 + ar8216_mii_write(bus, 0x6c, 0x0);
122 + ar8216_mii_write(bus, 0x70, 0x41af);
125 +static struct switch_driver ar8216_drv = {
129 +void switch_ar8216_init(void)
131 + /* for archs with manual relocation */
132 + ar8216_drv.probe = ar8216_probe;
133 + ar8216_drv.setup = ar8216_setup;
135 + switch_driver_register(&ar8216_drv);
137 --- a/drivers/net/switch/switch.c
138 +++ b/drivers/net/switch/switch.c
139 @@ -24,6 +24,9 @@ void switch_init(void)
140 #if defined(CONFIG_SWITCH_ADM6996I)
141 switch_adm6996i_init();
143 +#if defined(CONFIG_SWITCH_AR8216)
144 + switch_ar8216_init();
149 --- a/include/switch.h
150 +++ b/include/switch.h
151 @@ -92,6 +92,7 @@ static inline void switch_setup(struct s
152 /* Init functions for supported Switch drivers */
153 extern void switch_psb697x_init(void);
154 extern void switch_adm6996i_init(void);
155 +extern void switch_ar8216_init(void);
157 #endif /* __SWITCH_H */