6 files changed, 313 insertions, 254 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 11f7f660879b..e4f6f61c40e7 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -61,3 +61,6 @@ endif
 
 onenand-$(CONFIG_MTD_ONENAND_OMAP2)     := gpmc-onenand.o
 obj-y                                   += $(onenand-m) $(onenand-y)
+
+smc91x-$(CONFIG_SMC91X)                 := gpmc-smc91x.o
+obj-y                                   += $(smc91x-m) $(smc91x-y)
diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index 22143651037e..ef70b79942cd 100644
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -36,14 +36,11 @@
 #include <mach/common.h>
 #include <mach/gpmc.h>
 #include <mach/usb.h>
+#include <mach/gpmc-smc91x.h>
 
 #include "mmc-twl4030.h"
 
 #define SDP2430_CS0_BASE        0x04000000
-#define SDP2430_FLASH_CS        0
-#define SDP2430_SMC91X_CS       5
-
-#define SDP2430_ETHR_GPIO_IRQ           149
 
 static struct mtd_partition sdp2430_partitions[] = {
         /* bootloader (U-Boot, etc) in first sector */
@@ -99,100 +96,43 @@ static struct platform_device sdp2430_flash_device = {
         .resource       = &sdp2430_flash_resource,
 };
 
-static struct resource sdp2430_smc91x_resources[] = {
-        [0] = {
-                .start  = SDP2430_CS0_BASE,
-                .end    = SDP2430_CS0_BASE + SZ_64M - 1,
-                .flags  = IORESOURCE_MEM,
-        },
-        [1] = {
-                .start  = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
-                .end    = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
-                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
-        },
-};
-
-static struct platform_device sdp2430_smc91x_device = {
-        .name           = "smc91x",
-        .id             = -1,
-        .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
-        .resource       = sdp2430_smc91x_resources,
-};
-
 static struct platform_device *sdp2430_devices[] __initdata = {
-        &sdp2430_smc91x_device,
         &sdp2430_flash_device,
 };
 
-static inline void __init sdp2430_init_smc91x(void)
-{
-        int eth_cs;
-        unsigned long cs_mem_base;
-        unsigned int rate;
-        struct clk *gpmc_fck;
-
-        eth_cs = SDP2430_SMC91X_CS;
+#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91x_MODULE)
 
-        gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
-        if (IS_ERR(gpmc_fck)) {
-                WARN_ON(1);
-                return;
-        }
+static struct omap_smc91x_platform_data board_smc91x_data = {
+        .cs             = 5,
+        .gpio_irq       = 149,
+        .flags          = GPMC_MUX_ADD_DATA | GPMC_TIMINGS_SMC91C96 |
+                                IORESOURCE_IRQ_LOWLEVEL,
 
-        clk_enable(gpmc_fck);
-        rate = clk_get_rate(gpmc_fck);
-
-        /* Make sure CS1 timings are correct, for 2430 always muxed */
-        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
-
-        if (rate >= 160000000) {
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
-        } else if (rate >= 130000000) {
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
-        } else { /* rate = 100000000 */
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
-        }
+};
 
-        if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
-                printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
-                goto out;
-        }
+static void __init board_smc91x_init(void)
+{
+        if (omap_rev() > OMAP3430_REV_ES1_0)
+                board_smc91x_data.gpio_irq = 6;
+        else
+                board_smc91x_data.gpio_irq = 29;
 
-        sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
-        sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
-        udelay(100);
+        gpmc_smc91x_init(&board_smc91x_data);
+}
 
-        if (gpio_request(SDP2430_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
-                printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
-                        SDP2430_ETHR_GPIO_IRQ);
-                gpmc_cs_free(eth_cs);
-                goto out;
-        }
-        gpio_direction_input(SDP2430_ETHR_GPIO_IRQ);
+#else
 
-out:
-        clk_disable(gpmc_fck);
-        clk_put(gpmc_fck);
+static inline void board_smc91x_init(void)
+{
 }
 
+#endif
+
 static void __init omap_2430sdp_init_irq(void)
 {
         omap2_init_common_hw(NULL);
         omap_init_irq();
         omap_gpio_init();
-        sdp2430_init_smc91x();
 }
 
 static struct omap_uart_config sdp2430_uart_config __initdata = {
@@ -256,6 +196,7 @@ static void __init omap_2430sdp_init(void)
         omap_serial_init();
         twl4030_mmc_init(mmc);
         usb_musb_init();
+        board_smc91x_init();
 }
 
 static void __init omap_2430sdp_map_io(void)
diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c
index ed9274972122..0e6369583958 100644
--- a/arch/arm/mach-omap2/board-3430sdp.c
+++ b/arch/arm/mach-omap2/board-3430sdp.c
@@ -39,15 +39,12 @@
 
 #include <mach/control.h>
 #include <mach/keypad.h>
+#include <mach/gpmc-smc91x.h>
 
 #include "mmc-twl4030.h"
 
 #define CONFIG_DISABLE_HFCLK 1
 
-#define SDP3430_ETHR_GPIO_IRQ_SDPV1     29
-#define SDP3430_ETHR_GPIO_IRQ_SDPV2     6
-#define SDP3430_SMC91X_CS               3
-
 #define SDP3430_TS_GPIO_IRQ_SDPV1       3
 #define SDP3430_TS_GPIO_IRQ_SDPV2       2
 
@@ -56,24 +53,6 @@
 
 #define TWL4030_MSECURE_GPIO 22
 
-static struct resource sdp3430_smc91x_resources[] = {
-        [0] = {
-                .flags  = IORESOURCE_MEM,
-        },
-        [1] = {
-                .start  = 0,
-                .end    = 0,
-                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
-        },
-};
-
-static struct platform_device sdp3430_smc91x_device = {
-        .name           = "smc91x",
-        .id             = -1,
-        .num_resources  = ARRAY_SIZE(sdp3430_smc91x_resources),
-        .resource       = sdp3430_smc91x_resources,
-};
-
 static int sdp3430_keymap[] = {
         KEY(0, 0, KEY_LEFT),
         KEY(0, 1, KEY_RIGHT),
@@ -184,48 +163,14 @@ static struct regulator_consumer_supply sdp3430_vdvi_supply = {
 };
 
 static struct platform_device *sdp3430_devices[] __initdata = {
-        &sdp3430_smc91x_device,
         &sdp3430_lcd_device,
 };
 
-static inline void __init sdp3430_init_smc91x(void)
-{
-        int eth_cs;
-        unsigned long cs_mem_base;
-        int eth_gpio = 0;
-
-        eth_cs = SDP3430_SMC91X_CS;
-
-        if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
-                printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
-                return;
-        }
-
-        sdp3430_smc91x_resources[0].start = cs_mem_base + 0x300;
-        sdp3430_smc91x_resources[0].end = cs_mem_base + 0x30f;
-        udelay(100);
-
-        if (omap_rev() > OMAP3430_REV_ES1_0)
-                eth_gpio = SDP3430_ETHR_GPIO_IRQ_SDPV2;
-        else
-                eth_gpio = SDP3430_ETHR_GPIO_IRQ_SDPV1;
-
-        sdp3430_smc91x_resources[1].start = gpio_to_irq(eth_gpio);
-
-        if (gpio_request(eth_gpio, "SMC91x irq") < 0) {
-                printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
-                        eth_gpio);
-                return;
-        }
-        gpio_direction_input(eth_gpio);
-}
-
 static void __init omap_3430sdp_init_irq(void)
 {
         omap2_init_common_hw(NULL);
         omap_init_irq();
         omap_gpio_init();
-        sdp3430_init_smc91x();
 }
 
 static struct omap_uart_config sdp3430_uart_config __initdata = {
@@ -506,6 +451,32 @@ static int __init omap3430_i2c_init(void)
         return 0;
 }
 
+#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
+
+static struct omap_smc91x_platform_data board_smc91x_data = {
+        .cs             = 3,
+        .flags          = GPMC_MUX_ADD_DATA | GPMC_TIMINGS_SMC91C96 |
+                                IORESOURCE_IRQ_LOWLEVEL,
+};
+
+static void __init board_smc91x_init(void)
+{
+        if (omap_rev() > OMAP3430_REV_ES1_0)
+                board_smc91x_data.gpio_irq = 6;
+        else
+                board_smc91x_data.gpio_irq = 29;
+
+        gpmc_smc91x_init(&board_smc91x_data);
+}
+
+#else
+
+static inline void board_smc91x_init(void)
+{
+}
+
+#endif
+
 static void __init omap_3430sdp_init(void)
 {
         omap3430_i2c_init();
@@ -522,6 +493,7 @@ static void __init omap_3430sdp_init(void)
         ads7846_dev_init();
         omap_serial_init();
         usb_musb_init();
+        board_smc91x_init();
 }
 
 static void __init omap_3430sdp_map_io(void)
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index ca18ae94185a..233c7454d84f 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -28,31 +28,10 @@
 #include <mach/gpmc.h>
 #include <mach/keypad.h>
 #include <mach/onenand.h>
+#include <mach/gpmc-smc91x.h>
 
 #include "mmc-twl4030.h"
 
-
-#define SMC91X_CS                       1
-#define SMC91X_GPIO_IRQ                 54
-#define SMC91X_GPIO_RESET               164
-#define SMC91X_GPIO_PWRDWN              86
-
-static struct resource rx51_smc91x_resources[] = {
-        [0] = {
-                .flags          = IORESOURCE_MEM,
-        },
-        [1] = {
-                .flags          = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
-        },
-};
-
-static struct platform_device rx51_smc91x_device = {
-        .name           = "smc91x",
-        .id             = -1,
-        .num_resources  = ARRAY_SIZE(rx51_smc91x_resources),
-        .resource       = rx51_smc91x_resources,
-};
-
 static int rx51_keymap[] = {
         KEY(0, 0, KEY_Q),
         KEY(0, 1, KEY_W),
@@ -108,98 +87,6 @@ static struct twl4030_keypad_data rx51_kp_data = {
         .rep            = 1,
 };
 
-static struct platform_device *rx51_peripherals_devices[] = {
-        &rx51_smc91x_device,
-};
-
-/*
- * Timings are taken from smsc-lan91c96-ms.pdf
- */
-static int smc91x_init_gpmc(int cs)
-{
-        struct gpmc_timings t;
-        const int t2_r = 45;            /* t2 in Figure 12.10 */
-        const int t2_w = 30;            /* t2 in Figure 12.11 */
-        const int t3 = 15;              /* t3 in Figure 12.10 */
-        const int t5_r = 0;             /* t5 in Figure 12.10 */
-        const int t6_r = 45;            /* t6 in Figure 12.10 */
-        const int t6_w = 0;             /* t6 in Figure 12.11 */
-        const int t7_w = 15;            /* t7 in Figure 12.11 */
-        const int t15 = 12;             /* t15 in Figure 12.2 */
-        const int t20 = 185;            /* t20 in Figure 12.2 */
-
-        memset(&t, 0, sizeof(t));
-
-        t.cs_on = t15;
-        t.cs_rd_off = t3 + t2_r + t5_r; /* Figure 12.10 */
-        t.cs_wr_off = t3 + t2_w + t6_w; /* Figure 12.11 */
-        t.adv_on = t3;                  /* Figure 12.10 */
-        t.adv_rd_off = t3 + t2_r;       /* Figure 12.10 */
-        t.adv_wr_off = t3 + t2_w;       /* Figure 12.11 */
-        t.oe_off = t3 + t2_r + t5_r;    /* Figure 12.10 */
-        t.oe_on = t.oe_off - t6_r;      /* Figure 12.10 */
-        t.we_off = t3 + t2_w + t6_w;    /* Figure 12.11 */
-        t.we_on = t.we_off - t7_w;      /* Figure 12.11 */
-        t.rd_cycle = t20;               /* Figure 12.2 */
-        t.wr_cycle = t20;               /* Figure 12.4 */
-        t.access = t3 + t2_r + t5_r;    /* Figure 12.10 */
-        t.wr_access = t3 + t2_w + t6_w; /* Figure 12.11 */
-
-        gpmc_cs_write_reg(cs, GPMC_CS_CONFIG1, GPMC_CONFIG1_DEVICESIZE_16);
-
-        return gpmc_cs_set_timings(cs, &t);
-}
-
-static void __init rx51_init_smc91x(void)
-{
-        unsigned long cs_mem_base;
-        int ret;
-
-        omap_cfg_reg(U8_34XX_GPIO54_DOWN);
-        omap_cfg_reg(G25_34XX_GPIO86_OUT);
-        omap_cfg_reg(H19_34XX_GPIO164_OUT);
-
-        if (gpmc_cs_request(SMC91X_CS, SZ_16M, &cs_mem_base) < 0) {
-                printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
-                return;
-        }
-
-        rx51_smc91x_resources[0].start = cs_mem_base + 0x300;
-        rx51_smc91x_resources[0].end = cs_mem_base + 0x30f;
-
-        smc91x_init_gpmc(SMC91X_CS);
-
-        if (gpio_request(SMC91X_GPIO_IRQ, "SMC91X irq") < 0)
-                goto free1;
-
-        gpio_direction_input(SMC91X_GPIO_IRQ);
-        rx51_smc91x_resources[1].start = gpio_to_irq(SMC91X_GPIO_IRQ);
-
-        ret = gpio_request(SMC91X_GPIO_PWRDWN, "SMC91X powerdown");
-        if (ret)
-                goto free2;
-        gpio_direction_output(SMC91X_GPIO_PWRDWN, 0);
-
-        ret = gpio_request(SMC91X_GPIO_RESET, "SMC91X reset");
-        if (ret)
-                goto free3;
-        gpio_direction_output(SMC91X_GPIO_RESET, 0);
-        gpio_set_value(SMC91X_GPIO_RESET, 1);
-        msleep(100);
-        gpio_set_value(SMC91X_GPIO_RESET, 0);
-
-        return;
-
-free3:
-        gpio_free(SMC91X_GPIO_PWRDWN);
-free2:
-        gpio_free(SMC91X_GPIO_IRQ);
-free1:
-        gpmc_cs_free(SMC91X_CS);
-
-        printk(KERN_ERR "Could not initialize smc91x\n");
-}
-
 static struct twl4030_madc_platform_data rx51_madc_data = {
         .irq_line               = 1,
 };
@@ -466,12 +353,37 @@ static inline void board_onenand_init(void)
 
 #endif
 
+#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
+
+static struct omap_smc91x_platform_data board_smc91x_data = {
+        .cs             = 1,
+        .gpio_irq       = 54,
+        .gpio_pwrdwn    = 86,
+        .gpio_reset     = 164,
+        .flags          = GPMC_TIMINGS_SMC91C96 | IORESOURCE_IRQ_HIGHLEVEL,
+};
+
+static void __init board_smc91x_init(void)
+{
+        omap_cfg_reg(U8_34XX_GPIO54_DOWN);
+        omap_cfg_reg(G25_34XX_GPIO86_OUT);
+        omap_cfg_reg(H19_34XX_GPIO164_OUT);
+
+        gpmc_smc91x_init(&board_smc91x_data);
+}
+
+#else
+
+static inline void board_smc91x_init(void)
+{
+}
+
+#endif
+
 void __init rx51_peripherals_init(void)
 {
-        platform_add_devices(rx51_peripherals_devices,
-                                ARRAY_SIZE(rx51_peripherals_devices));
         rx51_i2c_init();
-        rx51_init_smc91x();
         board_onenand_init();
+        board_smc91x_init();
 }
 
diff --git a/arch/arm/mach-omap2/gpmc-smc91x.c b/arch/arm/mach-omap2/gpmc-smc91x.c
new file mode 100644
index 000000000000..df99d31d8b64
--- /dev/null
+++ b/arch/arm/mach-omap2/gpmc-smc91x.c
@@ -0,0 +1,189 @@
+/*
+ * linux/arch/arm/mach-omap2/gpmc-smc91x.c
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Contact:     Tony Lindgren
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/smc91x.h>
+
+#include <mach/board.h>
+#include <mach/gpmc.h>
+#include <mach/gpmc-smc91x.h>
+
+static struct omap_smc91x_platform_data *gpmc_cfg;
+
+static struct resource gpmc_smc91x_resources[] = {
+        [0] = {
+                .flags          = IORESOURCE_MEM,
+        },
+        [1] = {
+                .flags          = IORESOURCE_IRQ,
+        },
+};
+
+static struct smc91x_platdata gpmc_smc91x_info = {
+        .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_0,
+};
+
+static struct platform_device gpmc_smc91x_device = {
+        .name           = "smc91x",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(gpmc_smc91x_resources),
+        .resource       = gpmc_smc91x_resources,
+        .dev            = {
+                .platform_data = &gpmc_smc91x_info,
+        },
+};
+
+/*
+ * Set the gpmc timings for smc91c96. The timings are taken
+ * from the data sheet available at:
+ * http://www.smsc.com/main/catalog/lan91c96.html
+ * REVISIT: Level shifters can add at least to the access latency.
+ */
+static int smc91c96_gpmc_retime(void)
+{
+        struct gpmc_timings t;
+        const int t3 = 10;      /* Figure 12.2 read and 12.4 write */
+        const int t4_r = 20;    /* Figure 12.2 read */
+        const int t4_w = 5;     /* Figure 12.4 write */
+        const int t5 = 25;      /* Figure 12.2 read */
+        const int t6 = 15;      /* Figure 12.2 read */
+        const int t7 = 5;       /* Figure 12.4 write */
+        const int t8 = 5;       /* Figure 12.4 write */
+        const int t20 = 185;    /* Figure 12.2 read and 12.4 write */
+        u32 l;
+
+        memset(&t, 0, sizeof(t));
+
+        /* Read timings */
+        t.cs_on = 0;
+        t.adv_on = t.cs_on;
+        t.oe_on = t.adv_on + t3;
+        t.access = t.oe_on + t5;
+        t.oe_off = t.access;
+        t.adv_rd_off = t.oe_off + max(t4_r, t6);
+        t.cs_rd_off = t.oe_off;
+        t.rd_cycle = t20 - t.oe_on;
+
+        /* Write timings */
+        t.we_on = t.adv_on + t3;
+
+        if (cpu_is_omap34xx() && (gpmc_cfg->flags & GPMC_MUX_ADD_DATA)) {
+                t.wr_data_mux_bus = t.we_on;
+                t.we_off = t.wr_data_mux_bus + t7;
+        } else
+                t.we_off = t.we_on + t7;
+        if (cpu_is_omap34xx())
+                t.wr_access = t.we_off;
+        t.adv_wr_off = t.we_off + max(t4_w, t8);
+        t.cs_wr_off = t.we_off + t4_w;
+        t.wr_cycle = t20 - t.we_on;
+
+        l = GPMC_CONFIG1_DEVICESIZE_16;
+        if (gpmc_cfg->flags & GPMC_MUX_ADD_DATA)
+                l |= GPMC_CONFIG1_MUXADDDATA;
+        if (gpmc_cfg->flags & GPMC_READ_MON)
+                l |= GPMC_CONFIG1_WAIT_READ_MON;
+        if (gpmc_cfg->flags & GPMC_WRITE_MON)
+                l |= GPMC_CONFIG1_WAIT_WRITE_MON;
+        if (gpmc_cfg->wait_pin)
+                l |= GPMC_CONFIG1_WAIT_PIN_SEL(gpmc_cfg->wait_pin);
+        gpmc_cs_write_reg(gpmc_cfg->cs, GPMC_CS_CONFIG1, l);
+
+        /*
+         * FIXME: Calculate the address and data bus muxed timings.
+         * Note that at least adv_rd_off needs to be changed according
+         * to omap3430 TRM Figure 11-11. Are the sdp boards using the
+         * FPGA in between smc91x and omap as the timings are different
+         * from above?
+         */
+        if (gpmc_cfg->flags & GPMC_MUX_ADD_DATA)
+                return 0;
+
+        return gpmc_cs_set_timings(gpmc_cfg->cs, &t);
+}
+
+/*
+ * Initialize smc91x device connected to the GPMC. Note that we
+ * assume that pin multiplexing is done in the board-*.c file,
+ * or in the bootloader.
+ */
+void __init gpmc_smc91x_init(struct omap_smc91x_platform_data *board_data)
+{
+        unsigned long cs_mem_base;
+        int ret;
+
+        gpmc_cfg = board_data;
+
+        if (gpmc_cfg->flags & GPMC_TIMINGS_SMC91C96)
+                gpmc_cfg->retime = smc91c96_gpmc_retime;
+
+        if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
+                printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
+                return;
+        }
+
+        gpmc_smc91x_resources[0].start = cs_mem_base + 0x300;
+        gpmc_smc91x_resources[0].end = cs_mem_base + 0x30f;
+        gpmc_smc91x_resources[1].flags |= (gpmc_cfg->flags & IRQF_TRIGGER_MASK);
+
+        if (gpmc_cfg->retime) {
+                ret = gpmc_cfg->retime();
+                if (ret != 0)
+                        goto free1;
+        }
+
+        if (gpio_request(gpmc_cfg->gpio_irq, "SMC91X irq") < 0)
+                goto free1;
+
+        gpio_direction_input(gpmc_cfg->gpio_irq);
+        gpmc_smc91x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
+
+        if (gpmc_cfg->gpio_pwrdwn) {
+                ret = gpio_request(gpmc_cfg->gpio_pwrdwn, "SMC91X powerdown");
+                if (ret)
+                        goto free2;
+                gpio_direction_output(gpmc_cfg->gpio_pwrdwn, 0);
+        }
+
+        if (gpmc_cfg->gpio_reset) {
+                ret = gpio_request(gpmc_cfg->gpio_reset, "SMC91X reset");
+                if (ret)
+                        goto free3;
+
+                gpio_direction_output(gpmc_cfg->gpio_reset, 0);
+                gpio_set_value(gpmc_cfg->gpio_reset, 1);
+                msleep(100);
+                gpio_set_value(gpmc_cfg->gpio_reset, 0);
+        }
+
+        if (platform_device_register(&gpmc_smc91x_device) < 0) {
+                printk(KERN_ERR "Unable to register smc91x device\n");
+                gpio_free(gpmc_cfg->gpio_reset);
+                goto free3;
+        }
+
+        return;
+
+free3:
+        if (gpmc_cfg->gpio_pwrdwn)
+                gpio_free(gpmc_cfg->gpio_pwrdwn);
+free2:
+        gpio_free(gpmc_cfg->gpio_irq);
+free1:
+        gpmc_cs_free(gpmc_cfg->cs);
+
+        printk(KERN_ERR "Could not initialize smc91x\n");
+}
diff --git a/arch/arm/plat-omap/include/mach/gpmc-smc91x.h b/arch/arm/plat-omap/include/mach/gpmc-smc91x.h
new file mode 100644
index 000000000000..b64fbee4d567
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/gpmc-smc91x.h
@@ -0,0 +1,42 @@
+/*
+ * arch/arm/plat-omap/include/mach/gpmc-smc91x.h
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_OMAP_GPMC_SMC91X_H__
+
+#define GPMC_TIMINGS_SMC91C96   (1 << 4)
+#define GPMC_MUX_ADD_DATA       (1 << 5) /* GPMC_CONFIG1_MUXADDDATA */
+#define GPMC_READ_MON           (1 << 6) /* GPMC_CONFIG1_WAIT_READ_MON */
+#define GPMC_WRITE_MON          (1 << 7) /* GPMC_CONFIG1_WAIT_WRITE_MON */
+
+struct omap_smc91x_platform_data {
+        int     cs;
+        int     gpio_irq;
+        int     gpio_pwrdwn;
+        int     gpio_reset;
+        int     wait_pin;       /* Optional GPMC_CONFIG1_WAITPINSELECT */
+        u32     flags;
+        int     (*retime)(void);
+};
+
+#if defined(CONFIG_SMC91X) || \
+        defined(CONFIG_SMC91X_MODULE)
+
+extern void gpmc_smc91x_init(struct omap_smc91x_platform_data *d);
+
+#else
+
+#define board_smc91x_data       NULL
+
+static inline void gpmc_smc91x_init(struct omap_smc91x_platform_data *d)
+{
+}
+
+#endif
+#endif