davinci: EMAC platform support

Add SoC and platform-specific data and init for DaVinci EMAC network
driver.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

8 files changed, 161 insertions, 27 deletions

diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c
index 9c3ce31..02e7cda 100644
--- a/arch/arm/mach-davinci/board-dm644x-evm.c
+++ b/arch/arm/mach-davinci/board-dm644x-evm.c
@@ -16,12 +16,11 @@
 #include <linux/gpio.h>
 #include <linux/leds.h>
 #include <linux/memory.h>
-#include <linux/etherdevice.h>
 
 #include <linux/i2c.h>
 #include <linux/i2c/pcf857x.h>
 #include <linux/i2c/at24.h>
-
+#include <linux/etherdevice.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
@@ -39,6 +38,7 @@
 
 #include <mach/dm644x.h>
 #include <mach/common.h>
+#include <mach/emac.h>
 #include <mach/i2c.h>
 #include <mach/serial.h>
 #include <mach/mux.h>
@@ -60,6 +60,11 @@
 #define LXT971_PHY_ID	(0x001378e2)
 #define LXT971_PHY_MASK	(0xfffffff0)
 
+static struct emac_platform_data dm644x_evm_emac_pdata = {
+	.phy_mask	= DM644X_EVM_PHY_MASK,
+	.mdio_max_freq	= DM644X_EVM_MDIO_FREQUENCY,
+};
+
 static struct mtd_partition davinci_evm_norflash_partitions[] = {
 	/* bootloader (UBL, U-Boot, etc) in first 5 sectors */
 	{
@@ -441,15 +446,15 @@ static struct memory_accessor *at24_mem_acc;
 
 static void at24_setup(struct memory_accessor *mem_acc, void *context)
 {
-	DECLARE_MAC_BUF(mac_str);
-	char mac_addr[6];
+	char mac_addr[ETH_ALEN];
 
 	at24_mem_acc = mem_acc;
 
 	/* Read MAC addr from EEPROM */
-	if (at24_mem_acc->read(at24_mem_acc, mac_addr, 0x7f00, 6) == 6) {
-		printk(KERN_INFO "Read MAC addr from EEPROM: %s\n",
-		       print_mac(mac_str, mac_addr));
+	if (at24_mem_acc->read(at24_mem_acc, mac_addr, 0x7f00, ETH_ALEN) ==
+	    ETH_ALEN) {
+		printk(KERN_INFO "Read MAC addr from EEPROM: %pM\n", mac_addr);
+		memcpy(dm644x_evm_emac_pdata.mac_addr, mac_addr, ETH_ALEN);
 	}
 }
 
@@ -460,22 +465,6 @@ static struct at24_platform_data eeprom_info = {
 	.setup          = at24_setup,
 };
 
-int dm6446evm_eeprom_read(void *buf, off_t off, size_t count)
-{
-	if (at24_mem_acc)
-		return at24_mem_acc->read(at24_mem_acc, buf, off, count);
-	return -ENODEV;
-}
-EXPORT_SYMBOL(dm6446evm_eeprom_read);
-
-int dm6446evm_eeprom_write(void *buf, off_t off, size_t count)
-{
-	if (at24_mem_acc)
-		return at24_mem_acc->write(at24_mem_acc, buf, off, count);
-	return -ENODEV;
-}
-EXPORT_SYMBOL(dm6446evm_eeprom_write);
-
 /*
  * MSP430 supports RTC, card detection, input from IR remote, and
  * a bit more.  It triggers interrupts on GPIO(7) from pressing
@@ -697,6 +686,8 @@ static __init void davinci_evm_init(void)
 
 	davinci_serial_init(&uart_config);
 
+	dm644x_init_emac(&dm644x_evm_emac_pdata);
+
 	/* Register the fixup for PHY on DaVinci */
 	phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
 					davinci_phy_fixup);
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
index 94cb623..aedde3c 100644
--- a/arch/arm/mach-davinci/board-dm646x-evm.c
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -45,6 +45,16 @@
 #include <mach/psc.h>
 #include <mach/serial.h>
 #include <mach/i2c.h>
+#include <mach/mmc.h>
+#include <mach/emac.h>
+
+#define DM646X_EVM_PHY_MASK		(0x2)
+#define DM646X_EVM_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */
+
+static struct emac_platform_data dm646x_evm_emac_pdata = {
+	.phy_mask	= DM646X_EVM_PHY_MASK,
+	.mdio_max_freq	= DM646X_EVM_MDIO_FREQUENCY,
+};
 
 static struct davinci_uart_config uart_config __initdata = {
 	.enabled_uarts = (1 << 0),
@@ -196,14 +206,16 @@ static struct memory_accessor *at24_mem_acc;
 
 static void at24_setup(struct memory_accessor *mem_acc, void *context)
 {
-	char mac_addr[6];
+	char mac_addr[ETH_ALEN];
 
 	at24_mem_acc = mem_acc;
 
 	/* Read MAC addr from EEPROM */
 	if (at24_mem_acc->read(at24_mem_acc, mac_addr, 0x7f00, ETH_ALEN) ==
-	    ETH_ALEN)
+	    ETH_ALEN) {
 		pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
+		memcpy(dm646x_evm_emac_pdata.mac_addr, mac_addr, ETH_ALEN);
+	}
 }
 
 static struct at24_platform_data eeprom_info = {
@@ -261,6 +273,7 @@ static __init void evm_init(void)
 {
 	evm_init_i2c();
 	davinci_serial_init(&uart_config);
+	dm646x_init_emac(&dm646x_evm_emac_pdata);
 }
 
 static __init void davinci_dm646x_evm_irq_init(void)
diff --git a/arch/arm/mach-davinci/board-sffsdr.c b/arch/arm/mach-davinci/board-sffsdr.c
index c6525e4..913dad9 100644
--- a/arch/arm/mach-davinci/board-sffsdr.c
+++ b/arch/arm/mach-davinci/board-sffsdr.c
@@ -48,11 +48,15 @@
 
 #include <mach/dm644x.h>
 #include <mach/common.h>
+#include <mach/emac.h>
 #include <mach/i2c.h>
 #include <mach/serial.h>
 #include <mach/psc.h>
 #include <mach/mux.h>
 
+#define SFFSDR_PHY_MASK		(0x2)
+#define SFFSDR_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */
+
 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE   0x01e00000
 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE  0x02000000
 
@@ -104,8 +108,10 @@ static struct platform_device davinci_sffsdr_nandflash_device = {
 	.resource	= davinci_sffsdr_nandflash_resource,
 };
 
-/* Get Ethernet address from kernel boot params */
-static u8 mac_addr[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+static struct emac_platform_data sffsdr_emac_pdata = {
+	.phy_mask	= SFFSDR_PHY_MASK,
+	.mdio_max_freq	= SFFSDR_MDIO_FREQUENCY,
+};
 
 static struct at24_platform_data eeprom_info = {
 	.byte_len	= (64*1024) / 8,
@@ -156,6 +162,7 @@ static __init void davinci_sffsdr_init(void)
 			     ARRAY_SIZE(davinci_sffsdr_devices));
 	sffsdr_init_i2c();
 	davinci_serial_init(&uart_config);
+	dm644x_init_emac(&sffsdr_emac_pdata);
 	setup_usb(0, 0); /* We support only peripheral mode. */
 
 	/* mux VLYNQ pins */
diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index d428ef1..0419d57 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -444,6 +444,25 @@ static struct platform_device dm644x_edma_device = {
 };
 
 /*----------------------------------------------------------------------*/
+#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
+
+void dm644x_init_emac(struct emac_platform_data *pdata)
+{
+	pdata->ctrl_reg_offset		= DM644X_EMAC_CNTRL_OFFSET;
+	pdata->ctrl_mod_reg_offset	= DM644X_EMAC_CNTRL_MOD_OFFSET;
+	pdata->ctrl_ram_offset		= DM644X_EMAC_CNTRL_RAM_OFFSET;
+	pdata->mdio_reg_offset		= DM644X_EMAC_MDIO_OFFSET;
+	pdata->ctrl_ram_size		= DM644X_EMAC_CNTRL_RAM_SIZE;
+	pdata->version			= EMAC_VERSION_1;
+	dm644x_emac_device.dev.platform_data = pdata;
+	platform_device_register(&dm644x_emac_device);
+}
+#else
+
+void dm644x_init_emac(struct emac_platform_data *unused) {}
+
+#endif
+
 void __init dm644x_init(void)
 {
 	davinci_clk_init(dm644x_clks);
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index 93443a6..975ed06 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -279,6 +279,44 @@ struct davinci_clk dm646x_clks[] = {
 	CLK(NULL, NULL, NULL),
 };
 
+#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
+static struct resource dm646x_emac_resources[] = {
+	{
+		.start	= DM646X_EMAC_BASE,
+		.end	= DM646X_EMAC_BASE + 0x47ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= IRQ_DM646X_EMACRXTHINT,
+		.end	= IRQ_DM646X_EMACRXTHINT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= IRQ_DM646X_EMACRXINT,
+		.end	= IRQ_DM646X_EMACRXINT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= IRQ_DM646X_EMACTXINT,
+		.end	= IRQ_DM646X_EMACTXINT,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= IRQ_DM646X_EMACMISCINT,
+		.end	= IRQ_DM646X_EMACMISCINT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device dm646x_emac_device = {
+	.name		= "davinci_emac",
+	.id		= 1,
+	.num_resources	= ARRAY_SIZE(dm646x_emac_resources),
+	.resource	= dm646x_emac_resources,
+};
+
+#endif
+
 /*
  * Device specific mux setup
  *
@@ -385,6 +423,25 @@ static struct platform_device dm646x_edma_device = {
 
 /*----------------------------------------------------------------------*/
 
+#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
+
+void dm646x_init_emac(struct emac_platform_data *pdata)
+{
+	pdata->ctrl_reg_offset		= DM646X_EMAC_CNTRL_OFFSET;
+	pdata->ctrl_mod_reg_offset	= DM646X_EMAC_CNTRL_MOD_OFFSET;
+	pdata->ctrl_ram_offset		= DM646X_EMAC_CNTRL_RAM_OFFSET;
+	pdata->mdio_reg_offset		= DM646X_EMAC_MDIO_OFFSET;
+	pdata->ctrl_ram_size		= DM646X_EMAC_CNTRL_RAM_SIZE;
+	pdata->version			= EMAC_VERSION_2;
+	dm646x_emac_device.dev.platform_data = pdata;
+	platform_device_register(&dm646x_emac_device);
+}
+#else
+
+void dm646x_init_emac(struct emac_platform_data *unused) {}
+
+#endif
+
 void __init dm646x_init(void)
 {
 	davinci_clk_init(dm646x_clks);
diff --git a/arch/arm/mach-davinci/include/mach/dm644x.h b/arch/arm/mach-davinci/include/mach/dm644x.h
index 3dcb9f4..ace167a 100644
--- a/arch/arm/mach-davinci/include/mach/dm644x.h
+++ b/arch/arm/mach-davinci/include/mach/dm644x.h
@@ -24,6 +24,7 @@
 
 #include <linux/platform_device.h>
 #include <mach/hardware.h>
+#include <mach/emac.h>
 
 #define DM644X_EMAC_BASE		(0x01C80000)
 #define DM644X_EMAC_CNTRL_OFFSET	(0x0000)
@@ -33,5 +34,6 @@
 #define DM644X_EMAC_CNTRL_RAM_SIZE	(0x2000)
 
 void __init dm644x_init(void);
+void dm644x_init_emac(struct emac_platform_data *pdata);
 
 #endif /* __ASM_ARCH_DM644X_H */
diff --git a/arch/arm/mach-davinci/include/mach/dm646x.h b/arch/arm/mach-davinci/include/mach/dm646x.h
index d917939..ea7b28e 100644
--- a/arch/arm/mach-davinci/include/mach/dm646x.h
+++ b/arch/arm/mach-davinci/include/mach/dm646x.h
@@ -12,7 +12,16 @@
 #define __ASM_ARCH_DM646X_H
 
 #include <mach/hardware.h>
+#include <mach/emac.h>
+
+#define DM646X_EMAC_BASE		(0x01C80000)
+#define DM646X_EMAC_CNTRL_OFFSET	(0x0000)
+#define DM646X_EMAC_CNTRL_MOD_OFFSET	(0x1000)
+#define DM646X_EMAC_CNTRL_RAM_OFFSET	(0x2000)
+#define DM646X_EMAC_MDIO_OFFSET		(0x4000)
+#define DM646X_EMAC_CNTRL_RAM_SIZE	(0x2000)
 
 void __init dm646x_init(void);
+void dm646x_init_emac(struct emac_platform_data *pdata);
 
 #endif /* __ASM_ARCH_DM646X_H */
diff --git a/arch/arm/mach-davinci/include/mach/emac.h b/arch/arm/mach-davinci/include/mach/emac.h
new file mode 100644
index 0000000..549fcce
--- /dev/null
+++ b/arch/arm/mach-davinci/include/mach/emac.h
@@ -0,0 +1,36 @@
+/*
+ * TI DaVinci EMAC platform support
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#ifndef _MACH_DAVINCI_EMAC_H
+#define _MACH_DAVINCI_EMAC_H
+
+#include <linux/if_ether.h>
+
+struct emac_platform_data {
+	char mac_addr[ETH_ALEN];
+	u32 ctrl_reg_offset;
+	u32 ctrl_mod_reg_offset;
+	u32 ctrl_ram_offset;
+	u32 mdio_reg_offset;
+	u32 ctrl_ram_size;
+	u32 phy_mask;
+	u32 mdio_max_freq;
+	u8 rmii_en;
+	u8 version;
+};
+
+enum {
+	EMAC_VERSION_1,	/* DM644x */
+	EMAC_VERSION_2,	/* DM646x */
+};
+void davinci_init_emac(struct emac_platform_data *pdata);
+#endif
+
+