sh: ms7724se: Add sh_eth support

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2 files changed, 109 insertions, 2 deletions

diff --git a/arch/sh/boards/mach-se/7724/setup.c b/arch/sh/boards/mach-se/7724/setup.c
index 9cd04bd558b8..21d18005fb4a 100644
--- a/arch/sh/boards/mach-se/7724/setup.c
+++ b/arch/sh/boards/mach-se/7724/setup.c
@@ -23,6 +23,8 @@
 #include <media/sh_mobile_ceu.h>
 #include <asm/io.h>
 #include <asm/heartbeat.h>
+#include <asm/sh_eth.h>
+#include <asm/clock.h>
 #include <asm/sh_keysc.h>
 #include <cpu/sh7724.h>
 #include <mach-se/mach/se7724.h>
@@ -272,6 +274,34 @@ static struct platform_device keysc_device = {
         },
 };
 
+/* SH Eth */
+static struct resource sh_eth_resources[] = {
+        [0] = {
+                .start = SH_ETH_ADDR,
+                .end   = SH_ETH_ADDR + 0x1FC,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = 91,
+                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
+        },
+};
+
+struct sh_eth_plat_data sh_eth_plat = {
+        .phy = 0x1f, /* SMSC LAN8187 */
+        .edmac_endian = EDMAC_LITTLE_ENDIAN,
+};
+
+static struct platform_device sh_eth_device = {
+        .name = "sh-eth",
+        .id     = 0,
+        .dev = {
+                .platform_data = &sh_eth_plat,
+        },
+        .num_resources = ARRAY_SIZE(sh_eth_resources),
+        .resource = sh_eth_resources,
+};
+
 static struct platform_device *ms7724se_devices[] __initdata = {
         &heartbeat_device,
         &smc91x_eth_device,
@@ -280,8 +310,57 @@ static struct platform_device *ms7724se_devices[] __initdata = {
         &ceu0_device,
         &ceu1_device,
         &keysc_device,
+        &sh_eth_device,
 };
 
+#define EEPROM_OP   0xBA206000
+#define EEPROM_ADR  0xBA206004
+#define EEPROM_DATA 0xBA20600C
+#define EEPROM_STAT 0xBA206010
+#define EEPROM_STRT 0xBA206014
+static int __init sh_eth_is_eeprom_ready(void)
+{
+        int t = 10000;
+
+        while (t--) {
+                if (!ctrl_inw(EEPROM_STAT))
+                        return 1;
+                cpu_relax();
+        }
+
+        printk(KERN_ERR "ms7724se can not access to eeprom\n");
+        return 0;
+}
+
+static void __init sh_eth_init(void)
+{
+        int i;
+        u16 mac[3];
+
+        /* check EEPROM status */
+        if (!sh_eth_is_eeprom_ready())
+                return;
+
+        /* read MAC addr from EEPROM */
+        for (i = 0 ; i < 3 ; i++) {
+                ctrl_outw(0x0, EEPROM_OP); /* read */
+                ctrl_outw(i*2, EEPROM_ADR);
+                ctrl_outw(0x1, EEPROM_STRT);
+                if (!sh_eth_is_eeprom_ready())
+                        return;
+
+                mac[i] = ctrl_inw(EEPROM_DATA);
+                mac[i] = ((mac[i] & 0xFF) << 8) | (mac[i] >> 8); /* swap */
+        }
+
+        /* reset sh-eth */
+        ctrl_outl(0x1, SH_ETH_ADDR + 0x0);
+
+        /* set MAC addr */
+        ctrl_outl(((mac[0] << 16) | (mac[1])), SH_ETH_MAHR);
+        ctrl_outl((mac[2]), SH_ETH_MALR);
+}
+
 #define SW4140    0xBA201000
 #define FPGA_OUT  0xBA200400
 #define PORT_HIZA 0xA4050158
@@ -302,7 +381,8 @@ static int __init devices_setup(void)
         ctrl_outw(ctrl_inw(FPGA_OUT) &
                   ~((1 << 1)  | /* LAN */
                     (1 << 6)  | /* VIDEO DAC */
-                    (1 << 12)), /* USB0 */
+                    (1 << 12) | /* USB0 */
+                    (1 << 14)), /* RMII */
                   FPGA_OUT);
 
         /* enable IRQ 0,1,2 */
@@ -404,6 +484,28 @@ static int __init devices_setup(void)
         gpio_request(GPIO_FN_KEYOUT1,     NULL);
         gpio_request(GPIO_FN_KEYOUT0,     NULL);
 
+        /*
+         * enable SH-Eth
+         *
+         * please remove J33 pin from your board !!
+         *
+         * ms7724 board should not use GPIO_FN_LNKSTA pin
+         * So, This time PTX5 is set to input pin
+         */
+        gpio_request(GPIO_FN_RMII_RXD0,    NULL);
+        gpio_request(GPIO_FN_RMII_RXD1,    NULL);
+        gpio_request(GPIO_FN_RMII_TXD0,    NULL);
+        gpio_request(GPIO_FN_RMII_TXD1,    NULL);
+        gpio_request(GPIO_FN_RMII_REF_CLK, NULL);
+        gpio_request(GPIO_FN_RMII_TX_EN,   NULL);
+        gpio_request(GPIO_FN_RMII_RX_ER,   NULL);
+        gpio_request(GPIO_FN_RMII_CRS_DV,  NULL);
+        gpio_request(GPIO_FN_MDIO,         NULL);
+        gpio_request(GPIO_FN_MDC,          NULL);
+        gpio_request(GPIO_PTX5, NULL);
+        gpio_direction_input(GPIO_PTX5);
+        sh_eth_init();
+
         if (sw & SW41_B) {
                 /* SVGA */
                 lcdc_info.ch[0].lcd_cfg.xres         = 800;
@@ -437,7 +539,7 @@ static int __init devices_setup(void)
         }
 
         return platform_add_devices(ms7724se_devices,
-                                ARRAY_SIZE(ms7724se_devices));
+                                    ARRAY_SIZE(ms7724se_devices));
 }
 device_initcall(devices_setup);
 
diff --git a/arch/sh/include/mach-se/mach/se7724.h b/arch/sh/include/mach-se/mach/se7724.h
index 74164b60d0db..29514a39d0f5 100644
--- a/arch/sh/include/mach-se/mach/se7724.h
+++ b/arch/sh/include/mach-se/mach/se7724.h
@@ -20,6 +20,11 @@
  */
 #include <asm/addrspace.h>
 
+/* SH Eth */
+#define SH_ETH_ADDR     (0xA4600000)
+#define SH_ETH_MAHR     (SH_ETH_ADDR + 0x1C0)
+#define SH_ETH_MALR     (SH_ETH_ADDR + 0x1C8)
+
 #define PA_LED          (0xba203000)    /* 8bit LED */
 #define IRQ_MODE        (0xba200010)
 #define IRQ0_SR         (0xba200014)