ARM: S5PV310: Support ethernet for SMDKV310 and SMDKC210

This patch adds to support ethernet for SMDKV310 and SMDKC210 board.
  - define smc911x resources
  - define configurations of smc911x platform data
  - define platform device "smsc911x"
  - initialize srom controller for lan9215 chip

Signed-off-by: Daein Moon <moon9124@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/arch/arm/mach-s5pv310/mach-smdkv310.c b/arch/arm/mach-s5pv310/mach-smdkv310.c
index e350a7582d08..2e625a3a27fd 100644
--- a/arch/arm/mach-s5pv310/mach-smdkv310.c
+++ b/arch/arm/mach-s5pv310/mach-smdkv310.c
@@ -12,6 +12,8 @@
 #include <linux/gpio.h>
 #include <linux/mmc/host.h>
 #include <linux/platform_device.h>
+#include <linux/smsc911x.h>
+#include <linux/io.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
@@ -23,6 +25,7 @@
 #include <plat/sdhci.h>
 
 #include <mach/map.h>
+#include <mach/regs-srom.h>
 
 /* Following are default values for UCON, ULCON and UFCON UART registers */
 #define SMDKV310_UCON_DEFAULT   (S3C2410_UCON_TXILEVEL |        \
@@ -105,6 +108,37 @@ static struct s3c_sdhci_platdata smdkv310_hsmmc3_pdata __initdata = {
         .clk_type               = S3C_SDHCI_CLK_DIV_EXTERNAL,
 };
 
+static struct resource smdkv310_smsc911x_resources[] = {
+        [0] = {
+                .start  = S5PV310_PA_SROM_BANK(1),
+                .end    = S5PV310_PA_SROM_BANK(1) + SZ_64K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = IRQ_EINT(5),
+                .end    = IRQ_EINT(5),
+                .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
+        },
+};
+
+static struct smsc911x_platform_config smsc9215_config = {
+        .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
+        .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
+        .flags          = SMSC911X_USE_16BIT | SMSC911X_FORCE_INTERNAL_PHY,
+        .phy_interface  = PHY_INTERFACE_MODE_MII,
+        .mac            = {0x00, 0x80, 0x00, 0x23, 0x45, 0x67},
+};
+
+static struct platform_device smdkv310_smsc911x = {
+        .name           = "smsc911x",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(smdkv310_smsc911x_resources),
+        .resource       = smdkv310_smsc911x_resources,
+        .dev            = {
+                .platform_data  = &smsc9215_config,
+        },
+};
+
 static struct platform_device *smdkv310_devices[] __initdata = {
         &s3c_device_hsmmc0,
         &s3c_device_hsmmc1,
@@ -112,8 +146,33 @@ static struct platform_device *smdkv310_devices[] __initdata = {
         &s3c_device_hsmmc3,
         &s3c_device_rtc,
         &s3c_device_wdt,
+        &smdkv310_smsc911x,
 };
 
+static void __init smdkv310_smsc911x_init(void)
+{
+        u32 cs1;
+
+        /* configure nCS1 width to 16 bits */
+        cs1 = __raw_readl(S5PV310_SROM_BW) &
+                    ~(S5PV310_SROM_BW__CS_MASK <<
+                                    S5PV310_SROM_BW__NCS1__SHIFT);
+        cs1 |= ((1 << S5PV310_SROM_BW__DATAWIDTH__SHIFT) |
+                (1 << S5PV310_SROM_BW__WAITENABLE__SHIFT) |
+                (1 << S5PV310_SROM_BW__BYTEENABLE__SHIFT)) <<
+                S5PV310_SROM_BW__NCS1__SHIFT;
+        __raw_writel(cs1, S5PV310_SROM_BW);
+
+        /* set timing for nCS1 suitable for ethernet chip */
+        __raw_writel((0x1 << S5PV310_SROM_BCX__PMC__SHIFT) |
+                     (0x9 << S5PV310_SROM_BCX__TACP__SHIFT) |
+                     (0xc << S5PV310_SROM_BCX__TCAH__SHIFT) |
+                     (0x1 << S5PV310_SROM_BCX__TCOH__SHIFT) |
+                     (0x6 << S5PV310_SROM_BCX__TACC__SHIFT) |
+                     (0x1 << S5PV310_SROM_BCX__TCOS__SHIFT) |
+                     (0x1 << S5PV310_SROM_BCX__TACS__SHIFT), S5PV310_SROM_BC1);
+}
+
 static void __init smdkv310_map_io(void)
 {
         s5p_init_io(NULL, 0, S5P_VA_CHIPID);
@@ -123,6 +182,8 @@ static void __init smdkv310_map_io(void)
 
 static void __init smdkv310_machine_init(void)
 {
+        smdkv310_smsc911x_init();
+
         s3c_sdhci0_set_platdata(&smdkv310_hsmmc0_pdata);
         s3c_sdhci1_set_platdata(&smdkv310_hsmmc1_pdata);
         s3c_sdhci2_set_platdata(&smdkv310_hsmmc2_pdata);