arm:omap:am33xx: add CPSW platform hookup support

Signed-off-by: Chandan Nath <chandan.nath@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>

diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
index 0427cb859eebfba2f3695f3ca0a4f3fbf8f0699f..2332c178b629854aa013cc1a6bf4691ef8f68f57 100644 (file)
--- a/arch/arm/mach-omap2/control.h
+++ b/arch/arm/mach-omap2/control.h
@@ -55,6 +55,12 @@
 /* TI81XX spefic control submodules */
 #define TI81XX_CONTROL_DEVCONF         0x600
 
+/* TI81XX CONTROL_DEVCONF register offsets */
+#define TI81XX_CONTROL_MAC_ID0_LO       (TI81XX_CONTROL_DEVCONF + 0x030)
+#define TI81XX_CONTROL_MAC_ID0_HI       (TI81XX_CONTROL_DEVCONF + 0x034)
+#define TI81XX_CONTROL_MAC_ID1_LO       (TI81XX_CONTROL_DEVCONF + 0x038)
+#define TI81XX_CONTROL_MAC_ID1_HI       (TI81XX_CONTROL_DEVCONF + 0x03c)
+
 /* Control register offsets - read/write with omap_ctrl_{read,write}{bwl}() */
 
 #define OMAP2_CONTROL_SYSCONFIG                (OMAP2_CONTROL_INTERFACE + 0x10)

diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 35d5dffab7e11c4fa3f4efefe2397d3cf429dc5d..bcb66309aceac6960c1d202c76508f9f38bad0f7 100644 (file)
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -17,6 +17,10 @@
 #include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/of.h>
+#include <linux/davinci_emac.h>
+#include <linux/cpsw.h>
+#include <linux/etherdevice.h>
+#include <linux/dma-mapping.h>
 
 #include <mach/hardware.h>
 #include <mach/irqs.h>
@@ -40,6 +44,8 @@
 #define L3_MODULES_MAX_LEN 12
 #define L3_MODULES 3
 
+void am33xx_cpsw_init(void);
+
 static int __init omap3_l3_init(void)
 {
        int l;
@@ -712,11 +718,202 @@ static int __init omap2_init_devices(void)
        omap_init_sham();
        omap_init_aes();
        omap_init_vout();
+       am33xx_cpsw_init();
 
        return 0;
 }
 arch_initcall(omap2_init_devices);
 
+#define AM33XX_CPSW_BASE               (0x4A100000)
+#define AM33XX_CPSW_MDIO_BASE          (0x4A101000)
+#define AM33XX_CPSW_SS_BASE            (0x4A101200)
+#define AM33XX_EMAC_MDIO_FREQ          (1000000)
+
+static u64 am33xx_cpsw_dmamask = DMA_BIT_MASK(32);
+/* TODO : Verify the offsets */
+static struct cpsw_slave_data am33xx_cpsw_slaves[] = {
+       {
+               .slave_reg_ofs  = 0x208,
+               .sliver_reg_ofs = 0xd80,
+               .phy_id         = "0:00",
+       },
+       {
+               .slave_reg_ofs  = 0x308,
+               .sliver_reg_ofs = 0xdc0,
+               .phy_id         = "0:01",
+       },
+};
+
+static struct cpsw_platform_data am33xx_cpsw_pdata = {
+       .ss_reg_ofs             = 0x1200,
+       .channels               = 8,
+       .cpdma_reg_ofs          = 0x800,
+       .slaves                 = 2,
+       .slave_data             = am33xx_cpsw_slaves,
+       .ale_reg_ofs            = 0xd00,
+       .ale_entries            = 1024,
+       .host_port_reg_ofs      = 0x108,
+       .hw_stats_reg_ofs       = 0x900,
+       .bd_ram_ofs             = 0x2000,
+       .bd_ram_size            = SZ_8K,
+       .rx_descs               = 64,
+       .mac_control            = BIT(5), /* MIIEN */
+       .gigabit_en             = 1,
+       .host_port_num          = 0,
+       .no_bd_ram              = false,
+       .version                = CPSW_VERSION_2,
+};
+
+static struct mdio_platform_data am33xx_cpsw_mdiopdata = {
+       .bus_freq       = AM33XX_EMAC_MDIO_FREQ,
+};
+
+static struct resource am33xx_cpsw_mdioresources[] = {
+       {
+               .start  = AM33XX_CPSW_MDIO_BASE,
+               .end    = AM33XX_CPSW_MDIO_BASE + SZ_256 - 1,
+               .flags  = IORESOURCE_MEM,
+       },
+};
+
+static struct platform_device am33xx_cpsw_mdiodevice = {
+       .name           = "davinci_mdio",
+       .id             = 0,
+       .num_resources  = ARRAY_SIZE(am33xx_cpsw_mdioresources),
+       .resource       = am33xx_cpsw_mdioresources,
+       .dev.platform_data = &am33xx_cpsw_mdiopdata,
+};
+
+static struct resource am33xx_cpsw_resources[] = {
+       {
+               .start  = AM33XX_CPSW_BASE,
+               .end    = AM33XX_CPSW_BASE + SZ_2K - 1,
+               .flags  = IORESOURCE_MEM,
+       },
+       {
+               .start  = AM33XX_CPSW_SS_BASE,
+               .end    = AM33XX_CPSW_SS_BASE + SZ_256 - 1,
+               .flags  = IORESOURCE_MEM,
+       },
+       {
+               .start  = AM33XX_IRQ_CPSW_C0_RX,
+               .end    = AM33XX_IRQ_CPSW_C0_RX,
+               .flags  = IORESOURCE_IRQ,
+       },
+       {
+               .start  = AM33XX_IRQ_CPSW_RX,
+               .end    = AM33XX_IRQ_CPSW_RX,
+               .flags  = IORESOURCE_IRQ,
+       },
+       {
+               .start  = AM33XX_IRQ_CPSW_TX,
+               .end    = AM33XX_IRQ_CPSW_TX,
+               .flags  = IORESOURCE_IRQ,
+       },
+       {
+               .start  = AM33XX_IRQ_CPSW_C0,
+               .end    = AM33XX_IRQ_CPSW_C0,
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device am33xx_cpsw_device = {
+       .name           =       "cpsw",
+       .id             =       0,
+       .num_resources  =       ARRAY_SIZE(am33xx_cpsw_resources),
+       .resource       =       am33xx_cpsw_resources,
+       .dev            =       {
+                                       .platform_data  = &am33xx_cpsw_pdata,
+                                       .dma_mask       = &am33xx_cpsw_dmamask,
+                                       .coherent_dma_mask = DMA_BIT_MASK(32),
+                               },
+};
+
+static unsigned char  am33xx_macid0[ETH_ALEN];
+static unsigned char  am33xx_macid1[ETH_ALEN];
+static unsigned int   am33xx_evmid;
+
+/*
+* am33xx_evmid_fillup - set up board evmid
+* @evmid - evm id which needs to be configured
+*
+* This function is called to configure board evm id.
+* IA Motor Control EVM needs special setting of MAC PHY Id.
+* This function is called when IA Motor Control EVM is detected
+* during boot-up.
+*/
+void am33xx_evmid_fillup(unsigned int evmid)
+{
+       am33xx_evmid = evmid;
+       return;
+}
+
+/*
+* am33xx_cpsw_macidfillup - setup mac adrresses
+* @eeprommacid0 - mac id 0 which needs to be configured
+* @eeprommacid1 - mac id 1 which needs to be configured
+*
+* This function is called to configure mac addresses.
+* Mac addresses are read from eeprom and this function is called
+* to store those mac adresses in am33xx_macid0 and am33xx_macid1.
+* In case, mac address read from eFuse are invalid, mac addresses
+* stored in these variable are used.
+*/
+void am33xx_cpsw_macidfillup(char *eeprommacid0, char *eeprommacid1)
+{
+       u32 i;
+
+       /* Fillup these mac addresses with the mac adresses from eeprom */
+       for (i = 0; i < ETH_ALEN; i++) {
+               am33xx_macid0[i] = eeprommacid0[i];
+               am33xx_macid1[i] = eeprommacid1[i];
+       }
+
+       return;
+}
+
+void am33xx_cpsw_init(void)
+{
+       u32 mac_lo, mac_hi;
+       u32 i;
+
+       mac_lo = omap_ctrl_readl(TI81XX_CONTROL_MAC_ID0_LO);
+       mac_hi = omap_ctrl_readl(TI81XX_CONTROL_MAC_ID0_HI);
+       am33xx_cpsw_slaves[0].mac_addr[0] = mac_hi & 0xFF;
+       am33xx_cpsw_slaves[0].mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+       am33xx_cpsw_slaves[0].mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+       am33xx_cpsw_slaves[0].mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+       am33xx_cpsw_slaves[0].mac_addr[4] = mac_lo & 0xFF;
+       am33xx_cpsw_slaves[0].mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+       /* Read MACID0 from eeprom if eFuse MACID is invalid */
+       if (!is_valid_ether_addr(am33xx_cpsw_slaves[0].mac_addr)) {
+               for (i = 0; i < ETH_ALEN; i++)
+                       am33xx_cpsw_slaves[0].mac_addr[i] = am33xx_macid0[i];
+       }
+
+       mac_lo = omap_ctrl_readl(TI81XX_CONTROL_MAC_ID1_LO);
+       mac_hi = omap_ctrl_readl(TI81XX_CONTROL_MAC_ID1_HI);
+       am33xx_cpsw_slaves[1].mac_addr[0] = mac_hi & 0xFF;
+       am33xx_cpsw_slaves[1].mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+       am33xx_cpsw_slaves[1].mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+       am33xx_cpsw_slaves[1].mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+       am33xx_cpsw_slaves[1].mac_addr[4] = mac_lo & 0xFF;
+       am33xx_cpsw_slaves[1].mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+       /* Read MACID1 from eeprom if eFuse MACID is invalid */
+       if (!is_valid_ether_addr(am33xx_cpsw_slaves[1].mac_addr)) {
+               for (i = 0; i < ETH_ALEN; i++)
+                       am33xx_cpsw_slaves[1].mac_addr[i] = am33xx_macid1[i];
+       }
+
+       platform_device_register(&am33xx_cpsw_mdiodevice);
+       platform_device_register(&am33xx_cpsw_device);
+       clk_add_alias(NULL, dev_name(&am33xx_cpsw_mdiodevice.dev),
+                       NULL, &am33xx_cpsw_device.dev);
+}
+
+
 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 static int __init omap_init_wdt(void)
 {

diff --git a/arch/arm/mach-omap2/include/mach/board-am335xevm.h b/arch/arm/mach-omap2/include/mach/board-am335xevm.h
index e7ee5b306286df7e049626e156a0052c7aa9b393..95a39bcda2694072399d1303c04d537b462131fc 100644 (file)
--- a/arch/arm/mach-omap2/include/mach/board-am335xevm.h
+++ b/arch/arm/mach-omap2/include/mach/board-am335xevm.h
@@ -37,4 +37,8 @@
 #define PROFILE_7              (0x1 << 7)
 #define PROFILE_ALL            0xFF
 
+void am335x_evmid_fillup(unsigned int evmid);
+void am335x_cpsw_macidfillup(char *eeprommacid0, char *eeprommacid1);
+void am335x_cpsw_init(void);
+
 #endif