158 lines
3.8 KiB
Diff
158 lines
3.8 KiB
Diff
From 1a1d61a2faf0390033a3766559ce0e758e15894e Mon Sep 17 00:00:00 2001
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From: Luka Perkov <openwrt@lukaperkov.net>
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Date: Wed, 29 Aug 2012 22:08:16 +0200
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Subject: net: switchlib: add driver for Atheros AR8216
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Signed-off-by: Luka Perkov <openwrt@lukaperkov.net>
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Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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--- a/drivers/net/switch/Makefile
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+++ b/drivers/net/switch/Makefile
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@@ -12,6 +12,7 @@ LIB := $(obj)libswitch.o
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COBJS-$(CONFIG_SWITCH_MULTI) += switch.o
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COBJS-$(CONFIG_SWITCH_PSB697X) += psb697x.o
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COBJS-$(CONFIG_SWITCH_ADM6996I) += adm6996i.o
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+COBJS-$(CONFIG_SWITCH_AR8216) += ar8216.o
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COBJS := $(COBJS-y)
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SRCS := $(COBJS:.o=.c)
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--- /dev/null
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+++ b/drivers/net/switch/ar8216.c
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@@ -0,0 +1,114 @@
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+/*
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+ * Copyright (C) 2012 Luka Perkov <luka@openwrt.org>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+
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+#include <common.h>
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+#include <malloc.h>
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+#include <miiphy.h>
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+#include <switch.h>
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+#include <netdev.h>
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+
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+#define BITS(_s, _n) (((1UL << (_n)) - 1) << _s)
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+
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+#define AR8216_REG_CTRL 0x0000
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+#define AR8216_CTRL_REVISION BITS(0, 8)
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+#define AR8216_CTRL_VERSION BITS(8, 8)
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+
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+#define AR8216_PROBE_RETRIES 10
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+
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+static void split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
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+{
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+ regaddr >>= 1;
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+ *r1 = regaddr & 0x1e;
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+
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+ regaddr >>= 5;
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+ *r2 = regaddr & 0x7;
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+
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+ regaddr >>= 3;
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+ *page = regaddr & 0x1ff;
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+}
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+
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+static int ar8216_mii_read(struct mii_dev *bus, u32 reg)
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+{
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+ u16 r1, r2, page;
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+ u16 lo, hi;
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+
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+ split_addr(reg, &r1, &r2, &page);
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+
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+ bus->write(bus, 0x18, MDIO_DEVAD_NONE, 0, page);
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+ __udelay(1000);
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+
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+ lo = bus->read(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1);
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+ hi = bus->read(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1 + 1);
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+
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+ return (hi << 16) | lo;
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+}
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+
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+static void ar8216_mii_write(struct mii_dev *bus, u16 reg, u32 val)
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+{
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+ u16 r1, r2, r3;
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+ u16 lo, hi;
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+
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+ split_addr((u32) reg, &r1, &r2, &r3);
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+
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+ bus->write(bus, 0x18, MDIO_DEVAD_NONE, 0, r3);
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+ __udelay(1000);
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+
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+ lo = val & 0xffff;
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+ hi = (u16) (val >> 16);
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+ bus->write(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1 + 1, hi);
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+ bus->write(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1, lo);
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+}
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+
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+static int ar8216_probe(struct switch_device *dev)
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+{
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+ struct mii_dev *bus = dev->bus;
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+ u32 val;
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+ u16 id;
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+
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+ val = ar8216_mii_read(bus, AR8216_REG_CTRL);
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+ if (val == ~0)
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+ return 1;
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+
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+ id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
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+
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+ switch (id) {
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+ case 0x0101:
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+ return 0;
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+ default:
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+ return 1;
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+ }
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+}
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+
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+static void ar8216_setup(struct switch_device *dev)
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+{
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+ struct mii_dev *bus = dev->bus;
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+
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+ ar8216_mii_write(bus, 0x200, 0x200);
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+ ar8216_mii_write(bus, 0x300, 0x200);
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+ ar8216_mii_write(bus, 0x400, 0x200);
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+ ar8216_mii_write(bus, 0x500, 0x200);
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+ ar8216_mii_write(bus, 0x600, 0x7d);
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+ ar8216_mii_write(bus, 0x38, 0xc000050e);
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+ ar8216_mii_write(bus, 0x104, 0x4004);
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+ ar8216_mii_write(bus, 0x60, 0xffffffff);
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+ ar8216_mii_write(bus, 0x64, 0xaaaaaaaa);
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+ ar8216_mii_write(bus, 0x68, 0x55555555);
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+ ar8216_mii_write(bus, 0x6c, 0x0);
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+ ar8216_mii_write(bus, 0x70, 0x41af);
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+}
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+
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+static struct switch_driver ar8216_drv = {
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+ .name = "ar8216",
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+};
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+
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+void switch_ar8216_init(void)
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+{
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+ /* for archs with manual relocation */
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+ ar8216_drv.probe = ar8216_probe;
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+ ar8216_drv.setup = ar8216_setup;
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+
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+ switch_driver_register(&ar8216_drv);
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+}
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--- a/drivers/net/switch/switch.c
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+++ b/drivers/net/switch/switch.c
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@@ -23,6 +23,9 @@ void switch_init(void)
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#if defined(CONFIG_SWITCH_ADM6996I)
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switch_adm6996i_init();
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#endif
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+#if defined(CONFIG_SWITCH_AR8216)
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+ switch_ar8216_init();
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+#endif
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board_switch_init();
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}
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--- a/include/switch.h
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+++ b/include/switch.h
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@@ -99,6 +99,7 @@ static inline void switch_setup(struct s
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/* Init functions for supported Switch drivers */
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extern void switch_psb697x_init(void);
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extern void switch_adm6996i_init(void);
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+extern void switch_ar8216_init(void);
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#endif /* __SWITCH_H */
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