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Message-Id: <181be0f834f3670249d3c8d7ba1462dab1ece2c1.1288321597.git.mirq-linux@rere.qmqm.pl>
Date: Fri, 29 Oct 2010 12:23:08 +0200 (CEST)
From: Michał Mirosław <mirq-linux@...e.qmqm.pl>
To: Hans Ulli Kroll <ulli.kroll@...glemail.com>,
Russell King <linux@....linux.org.uk>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Cc: Paulius Zaleckas <paulius.zaleckas@...il.com>,
Janos Laube <janos.dev@...il.com>
Subject: [RFC PATCH 1/2] Gemini: create platform device for ethernet in Raidsonic IB-4220B
This is cherry-picked from:
git://git.berlios.de/gemini-board ib4220
Code by Paulius Zaleckas <paulius.zaleckas@...il.com>
and Janos Laube <janos.dev@...il.com>.
Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
arch/arm/mach-gemini/board-nas4220b.c | 53 ++++++++++++++++++++++++++++++
arch/arm/mach-gemini/common.h | 2 +
arch/arm/mach-gemini/devices.c | 52 +++++++++++++++++++++++++++++
arch/arm/mach-gemini/include/mach/gmac.h | 21 ++++++++++++
4 files changed, 128 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-gemini/include/mach/gmac.h
diff --git a/arch/arm/mach-gemini/board-nas4220b.c b/arch/arm/mach-gemini/board-nas4220b.c
index 2ba096d..ca6ec5a 100644
--- a/arch/arm/mach-gemini/board-nas4220b.c
+++ b/arch/arm/mach-gemini/board-nas4220b.c
@@ -26,6 +26,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
+#include <mach/gmac.h>
#include <mach/hardware.h>
#include <mach/global_reg.h>
@@ -91,13 +92,65 @@ static struct platform_device ib4220b_key_device = {
},
};
+static struct mdio_gpio_platform_data ib4220b_mdio = {
+ .mdc = 22,
+ .mdio = 21,
+ .phy_mask = ~(1 << 1),
+};
+
+static struct platform_device ib4220b_phy_device = {
+ .name = "mdio-gpio",
+ .id = 0,
+ .dev = {
+ .platform_data = &ib4220b_mdio,
+ },
+};
+
+static struct gemini_gmac_platform_data ib4220b_gmac_data = {
+ .bus_id[0] = "0:01",
+ .interface[0] = PHY_INTERFACE_MODE_RGMII,
+};
+
+static void __init gmac_ib4220b_init(void)
+{
+ unsigned int val;
+
+ val = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+ GLOBAL_IO_DRIVING_CTRL);
+ val |= (0x3 << GMAC0_PADS_SHIFT) | (0x3 << GMAC1_PADS_SHIFT);
+ __raw_writel(val, IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+ GLOBAL_IO_DRIVING_CTRL);
+
+ val = (0x0 << GMAC0_RXDV_SKEW_SHIFT) | (0xf << GMAC0_RXC_SKEW_SHIFT) |
+ (0x7 << GMAC0_TXEN_SKEW_SHIFT) | (0xa << GMAC0_TXC_SKEW_SHIFT) |
+ (0x0 << GMAC1_RXDV_SKEW_SHIFT) | (0xf << GMAC1_RXC_SKEW_SHIFT) |
+ (0x7 << GMAC1_TXEN_SKEW_SHIFT) | (0xa << GMAC1_TXC_SKEW_SHIFT);
+ __raw_writel(val, IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+ GLOBAL_GMAC_CTRL_SKEW_CTRL);
+
+ __raw_writel(0x77777777, IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+ GLOBAL_GMAC0_DATA_SKEW_CTRL);
+ __raw_writel(0x77777777, IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+ GLOBAL_GMAC1_DATA_SKEW_CTRL);
+
+ val = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+ GLOBAL_ARBITRATION1_CTRL) & ~BURST_LENGTH_MASK;
+ val |= (0x20 << BURST_LENGTH_SHIFT);
+ __raw_writel(val, IO_ADDRESS(GEMINI_GLOBAL_BASE) +
+ GLOBAL_ARBITRATION1_CTRL);
+}
+
static void __init ib4220b_init(void)
{
gemini_gpio_init();
+ gmac_ib4220b_init();
+
platform_register_uart();
platform_register_pflash(SZ_16M, NULL, 0);
platform_device_register(&ib4220b_led_device);
platform_device_register(&ib4220b_key_device);
+ platform_device_register(&ib4220b_phy_device);
+ platform_register_ethernet(&ib4220b_gmac_data);
}
MACHINE_START(NAS4220B, "Raidsonic NAS IB-4220-B")
diff --git a/arch/arm/mach-gemini/common.h b/arch/arm/mach-gemini/common.h
index 9392834..4eafed5 100644
--- a/arch/arm/mach-gemini/common.h
+++ b/arch/arm/mach-gemini/common.h
@@ -13,6 +13,7 @@
#define __GEMINI_COMMON_H__
struct mtd_partition;
+struct gemini_gmac_platform_data;
extern void gemini_map_io(void);
extern void gemini_init_irq(void);
@@ -21,6 +22,7 @@ extern void gemini_gpio_init(void);
/* Common platform devices registration functions */
extern int platform_register_uart(void);
+extern int platform_register_ethernet(struct gemini_gmac_platform_data *pdata);
extern int platform_register_pflash(unsigned int size,
struct mtd_partition *parts,
unsigned int nr_parts);
diff --git a/arch/arm/mach-gemini/devices.c b/arch/arm/mach-gemini/devices.c
index 6b52525..ead7ab1 100644
--- a/arch/arm/mach-gemini/devices.c
+++ b/arch/arm/mach-gemini/devices.c
@@ -17,6 +17,7 @@
#include <mach/irqs.h>
#include <mach/hardware.h>
#include <mach/global_reg.h>
+#include <mach/gmac.h>
static struct plat_serial8250_port serial_platform_data[] = {
{
@@ -45,6 +46,57 @@ int platform_register_uart(void)
return platform_device_register(&serial_device);
}
+
+static struct resource gmac_resources[] = {
+ {
+ .start = GEMINI_TOE_BASE,
+ .end = GEMINI_TOE_BASE + 0xffff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_GMAC0,
+ .end = IRQ_GMAC0,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .start = IRQ_GMAC1,
+ .end = IRQ_GMAC1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 gmac_dmamask = 0xffffffffUL;
+
+static struct platform_device ethernet_device = {
+ .name = "gemini-gmac",
+ .id = 0,
+ .dev = {
+ .dma_mask = &gmac_dmamask,
+ .coherent_dma_mask = 0xffffffff,
+ },
+ .num_resources = ARRAY_SIZE(gmac_resources),
+ .resource = gmac_resources,
+};
+
+int __init platform_register_ethernet(struct gemini_gmac_platform_data *pdata)
+{
+ unsigned int reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
+
+ reg &= ~(GMAC_GMII | GMAC_1_ENABLE);
+
+ if (pdata->bus_id[1])
+ reg |= GMAC_1_ENABLE;
+ else if (pdata->interface[0] == PHY_INTERFACE_MODE_GMII)
+ reg |= GMAC_GMII;
+
+ __raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
+
+ ethernet_device.dev.platform_data = pdata;
+
+ return platform_device_register(ðernet_device);
+}
+
+
static struct resource flash_resource = {
.start = GEMINI_FLASH_BASE,
.flags = IORESOURCE_MEM,
diff --git a/arch/arm/mach-gemini/include/mach/gmac.h b/arch/arm/mach-gemini/include/mach/gmac.h
new file mode 100644
index 0000000..c6eeacc
--- /dev/null
+++ b/arch/arm/mach-gemini/include/mach/gmac.h
@@ -0,0 +1,21 @@
+/*
+ * Gemini GMAC specific defines
+ *
+ * Copyright (C) 2008, Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#ifndef __MACH_GMAC_H__
+#define __MACH_GMAC_H__
+
+#include <linux/phy.h>
+
+struct gemini_gmac_platform_data {
+ char *bus_id[2]; /* NULL means that this port is not used */
+ phy_interface_t interface[2];
+};
+
+#endif /* __MACH_GMAC_H__ */
--
1.7.1
--
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