AM35xx: Platform specific hookup for EMAC module

Modified AM35xx EVM init sequence to handle EMAC
initialization.

Signed-off-by: Sriramakrishnan <srk@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 98 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c
index 6ca0075026ff..02e209743e1f 100644
--- a/arch/arm/mach-omap2/board-am3517evm.c
+++ b/arch/arm/mach-omap2/board-am3517evm.c
@@ -22,6 +22,7 @@
 #include <linux/gpio.h>
 #include <linux/i2c/pca953x.h>
 #include <linux/can/platform/ti_hecc.h>
+#include <linux/davinci_emac.h>
 
 #include <mach/hardware.h>
 #include <mach/am35xx.h>
@@ -31,11 +32,106 @@
 
 #include <plat/board.h>
 #include <plat/common.h>
+#include <plat/control.h>
 #include <plat/usb.h>
 #include <plat/display.h>
 
 #include "mux.h"
 
+#define AM35XX_EVM_PHY_MASK             (0xF)
+#define AM35XX_EVM_MDIO_FREQUENCY       (1000000)
+
+static struct emac_platform_data am3517_evm_emac_pdata = {
+        .phy_mask       = AM35XX_EVM_PHY_MASK,
+        .mdio_max_freq  = AM35XX_EVM_MDIO_FREQUENCY,
+        .rmii_en        = 1,
+};
+
+static struct resource am3517_emac_resources[] = {
+        {
+                .start  = AM35XX_IPSS_EMAC_BASE,
+                .end    = AM35XX_IPSS_EMAC_BASE + 0x3FFFF,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
+                .end    = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .start  = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
+                .end    = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .start  = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
+                .end    = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .start  = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
+                .end    = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device am3517_emac_device = {
+        .name           = "davinci_emac",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(am3517_emac_resources),
+        .resource       = am3517_emac_resources,
+};
+
+static void am3517_enable_ethernet_int(void)
+{
+        u32 regval;
+
+        regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
+        regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
+                AM35XX_CPGMAC_C0_TX_PULSE_CLR |
+                AM35XX_CPGMAC_C0_MISC_PULSE_CLR |
+                AM35XX_CPGMAC_C0_RX_THRESH_CLR);
+        omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
+        regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
+}
+
+static void am3517_disable_ethernet_int(void)
+{
+        u32 regval;
+
+        regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
+        regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
+                AM35XX_CPGMAC_C0_TX_PULSE_CLR);
+        omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
+        regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
+}
+
+void am3517_evm_ethernet_init(struct emac_platform_data *pdata)
+{
+        unsigned int regval;
+
+        pdata->ctrl_reg_offset          = AM35XX_EMAC_CNTRL_OFFSET;
+        pdata->ctrl_mod_reg_offset      = AM35XX_EMAC_CNTRL_MOD_OFFSET;
+        pdata->ctrl_ram_offset          = AM35XX_EMAC_CNTRL_RAM_OFFSET;
+        pdata->mdio_reg_offset          = AM35XX_EMAC_MDIO_OFFSET;
+        pdata->ctrl_ram_size            = AM35XX_EMAC_CNTRL_RAM_SIZE;
+        pdata->version                  = EMAC_VERSION_2;
+        pdata->hw_ram_addr              = AM35XX_EMAC_HW_RAM_ADDR;
+        pdata->interrupt_enable         = am3517_enable_ethernet_int;
+        pdata->interrupt_disable        = am3517_disable_ethernet_int;
+        am3517_emac_device.dev.platform_data    = pdata;
+        platform_device_register(&am3517_emac_device);
+
+        regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
+        regval = regval & (~(AM35XX_CPGMACSS_SW_RST));
+        omap_ctrl_writel(regval, AM35XX_CONTROL_IP_SW_RESET);
+        regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
+
+        return ;
+}
+
+
+
 #define LCD_PANEL_PWR           176
 #define LCD_PANEL_BKLIGHT_PWR   182
 #define LCD_PANEL_PWM           181
@@ -351,6 +447,8 @@ static void __init am3517_evm_init(void)
 
         i2c_register_board_info(1, am3517evm_i2c_boardinfo,
                                 ARRAY_SIZE(am3517evm_i2c_boardinfo));
+        /*Ethernet*/
+        am3517_evm_ethernet_init(&am3517_evm_emac_pdata);
 }
 
 static void __init am3517_evm_map_io(void)