Merge branch 'devel-stable' into devel

Conflicts:
	arch/arm/kernel/entry-armv.S
	arch/arm/kernel/setup.c
	arch/arm/mm/init.c

1 files changed, 68 insertions, 188 deletions

diff --git a/arch/arm/mach-mx3/mach-mx31_3ds.c b/arch/arm/mach-mx3/mach-mx31_3ds.c
index 58e57291b79d..6fe69e124d30 100644
--- a/arch/arm/mach-mx3/mach-mx31_3ds.c
+++ b/arch/arm/mach-mx3/mach-mx31_3ds.c
@@ -10,10 +10,6 @@
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/delay.h>
@@ -22,7 +18,6 @@
 #include <linux/clk.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
-#include <linux/smsc911x.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/mc13783.h>
 #include <linux/spi/spi.h>
@@ -37,19 +32,47 @@
 #include <asm/memory.h>
 #include <asm/mach/map.h>
 #include <mach/common.h>
-#include <mach/board-mx31_3ds.h>
-#include <mach/imx-uart.h>
 #include <mach/iomux-mx3.h>
-#include <mach/mxc_nand.h>
-#include <mach/spi.h>
+#include <mach/3ds_debugboard.h>
+
+#include "devices-imx31.h"
 #include "devices.h"
 
-/*!
- * @file mx31_3ds.c
- *
- * @brief This file contains the board-specific initialization routines.
- *
- * @ingroup System
+/* Definitions for components on the Debug board */
+
+/* Base address of CPLD controller on the Debug board */
+#define DEBUG_BASE_ADDRESS              CS5_IO_ADDRESS(MX3x_CS5_BASE_ADDR)
+
+/* LAN9217 ethernet base address */
+#define LAN9217_BASE_ADDR               MX3x_CS5_BASE_ADDR
+
+/* CPLD config and interrupt base address */
+#define CPLD_ADDR                       (DEBUG_BASE_ADDRESS + 0x20000)
+
+/* status, interrupt */
+#define CPLD_INT_STATUS_REG             (CPLD_ADDR + 0x10)
+#define CPLD_INT_MASK_REG               (CPLD_ADDR + 0x38)
+#define CPLD_INT_RESET_REG              (CPLD_ADDR + 0x20)
+/* magic word for debug CPLD */
+#define CPLD_MAGIC_NUMBER1_REG          (CPLD_ADDR + 0x40)
+#define CPLD_MAGIC_NUMBER2_REG          (CPLD_ADDR + 0x48)
+/* CPLD code version */
+#define CPLD_CODE_VER_REG               (CPLD_ADDR + 0x50)
+/* magic word for debug CPLD */
+#define CPLD_MAGIC_NUMBER3_REG          (CPLD_ADDR + 0x58)
+
+/* CPLD IRQ line for external uart, external ethernet etc */
+#define EXPIO_PARENT_INT        IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)
+
+#define MXC_EXP_IO_BASE         (MXC_BOARD_IRQ_START)
+#define MXC_IRQ_TO_EXPIO(irq)   ((irq) - MXC_EXP_IO_BASE)
+
+#define EXPIO_INT_ENET          (MXC_EXP_IO_BASE + 0)
+
+#define MXC_MAX_EXP_IO_LINES    16
+
+/*
+ * This file contains the board-specific initialization routines.
  */
 
 static int mx31_3ds_pins[] = {
@@ -145,7 +168,7 @@ static int spi1_internal_chipselect[] = {
         MXC_SPI_CS(2),
 };
 
-static struct spi_imx_master spi1_pdata = {
+static const struct spi_imx_master spi1_pdata __initconst = {
         .chipselect     = spi1_internal_chipselect,
         .num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
 };
@@ -165,7 +188,8 @@ static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
 /*
  * NAND Flash
  */
-static struct mxc_nand_platform_data imx31_3ds_nand_flash_pdata = {
+static const struct mxc_nand_platform_data
+mx31_3ds_nand_board_info __initconst = {
         .width          = 1,
         .hw_ecc         = 1,
 #ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
@@ -182,8 +206,10 @@ static struct mxc_nand_platform_data imx31_3ds_nand_flash_pdata = {
 
 #define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
 
-static void mx31_3ds_usbotg_init(void)
+static int mx31_3ds_usbotg_init(void)
 {
+        int err;
+
         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
@@ -197,10 +223,25 @@ static void mx31_3ds_usbotg_init(void)
         mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
         mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
 
-        gpio_request(USBOTG_RST_B, "otgusb-reset");
-        gpio_direction_output(USBOTG_RST_B, 0);
+        err = gpio_request(USBOTG_RST_B, "otgusb-reset");
+        if (err) {
+                pr_err("Failed to request the USB OTG reset gpio\n");
+                return err;
+        }
+
+        err = gpio_direction_output(USBOTG_RST_B, 0);
+        if (err) {
+                pr_err("Failed to drive the USB OTG reset gpio\n");
+                goto usbotg_free_reset;
+        }
+
         mdelay(1);
         gpio_set_value(USBOTG_RST_B, 1);
+        return 0;
+
+usbotg_free_reset:
+        gpio_free(USBOTG_RST_B);
+        return err;
 }
 
 static struct fsl_usb2_platform_data usbotg_pdata = {
@@ -208,178 +249,16 @@ static struct fsl_usb2_platform_data usbotg_pdata = {
         .phy_mode       = FSL_USB2_PHY_ULPI,
 };
 
-static struct imxuart_platform_data uart_pdata = {
+static const struct imxuart_platform_data uart_pdata __initconst = {
         .flags = IMXUART_HAVE_RTSCTS,
 };
 
 /*
- * Support for the SMSC9217 on the Debug board.
- */
-
-static struct smsc911x_platform_config smsc911x_config = {
-        .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
-        .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
-        .flags          = SMSC911X_USE_16BIT | SMSC911X_FORCE_INTERNAL_PHY,
-        .phy_interface  = PHY_INTERFACE_MODE_MII,
-};
-
-static struct resource smsc911x_resources[] = {
-        {
-                .start          = LAN9217_BASE_ADDR,
-                .end            = LAN9217_BASE_ADDR + 0xff,
-                .flags          = IORESOURCE_MEM,
-        }, {
-                .start          = EXPIO_INT_ENET,
-                .end            = EXPIO_INT_ENET,
-                .flags          = IORESOURCE_IRQ,
-        },
-};
-
-static struct platform_device smsc911x_device = {
-        .name           = "smsc911x",
-        .id             = -1,
-        .num_resources  = ARRAY_SIZE(smsc911x_resources),
-        .resource       = smsc911x_resources,
-        .dev            = {
-                .platform_data = &smsc911x_config,
-        },
-};
-
-/*
- * Routines for the CPLD on the debug board. It contains a CPLD handling
- * LEDs, switches, interrupts for Ethernet.
- */
-
-static void mx31_3ds_expio_irq_handler(uint32_t irq, struct irq_desc *desc)
-{
-        uint32_t imr_val;
-        uint32_t int_valid;
-        uint32_t expio_irq;
-
-        imr_val = __raw_readw(CPLD_INT_MASK_REG);
-        int_valid = __raw_readw(CPLD_INT_STATUS_REG) & ~imr_val;
-
-        expio_irq = MXC_EXP_IO_BASE;
-        for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
-                if ((int_valid & 1) == 0)
-                        continue;
-                generic_handle_irq(expio_irq);
-        }
-}
-
-/*
- * Disable an expio pin's interrupt by setting the bit in the imr.
- * @param irq           an expio virtual irq number
- */
-static void expio_mask_irq(uint32_t irq)
-{
-        uint16_t reg;
-        uint32_t expio = MXC_IRQ_TO_EXPIO(irq);
-
-        /* mask the interrupt */
-        reg = __raw_readw(CPLD_INT_MASK_REG);
-        reg |= 1 << expio;
-        __raw_writew(reg, CPLD_INT_MASK_REG);
-}
-
-/*
- * Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.
- * @param irq           an expanded io virtual irq number
- */
-static void expio_ack_irq(uint32_t irq)
-{
-        uint32_t expio = MXC_IRQ_TO_EXPIO(irq);
-
-        /* clear the interrupt status */
-        __raw_writew(1 << expio, CPLD_INT_RESET_REG);
-        __raw_writew(0, CPLD_INT_RESET_REG);
-        /* mask the interrupt */
-        expio_mask_irq(irq);
-}
-
-/*
- * Enable a expio pin's interrupt by clearing the bit in the imr.
- * @param irq           a expio virtual irq number
- */
-static void expio_unmask_irq(uint32_t irq)
-{
-        uint16_t reg;
-        uint32_t expio = MXC_IRQ_TO_EXPIO(irq);
-
-        /* unmask the interrupt */
-        reg = __raw_readw(CPLD_INT_MASK_REG);
-        reg &= ~(1 << expio);
-        __raw_writew(reg, CPLD_INT_MASK_REG);
-}
-
-static struct irq_chip expio_irq_chip = {
-        .ack = expio_ack_irq,
-        .mask = expio_mask_irq,
-        .unmask = expio_unmask_irq,
-};
-
-static int __init mx31_3ds_init_expio(void)
-{
-        int i;
-        int ret;
-
-        /* Check if there's a debug board connected */
-        if ((__raw_readw(CPLD_MAGIC_NUMBER1_REG) != 0xAAAA) ||
-            (__raw_readw(CPLD_MAGIC_NUMBER2_REG) != 0x5555) ||
-            (__raw_readw(CPLD_MAGIC_NUMBER3_REG) != 0xCAFE)) {
-                /* No Debug board found */
-                return -ENODEV;
-        }
-
-        pr_info("i.MX31 3DS Debug board detected, rev = 0x%04X\n",
-                __raw_readw(CPLD_CODE_VER_REG));
-
-        /*
-         * Configure INT line as GPIO input
-         */
-        ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "sms9217-irq");
-        if (ret)
-                pr_warning("could not get LAN irq gpio\n");
-        else
-                gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
-
-        /* Disable the interrupts and clear the status */
-        __raw_writew(0, CPLD_INT_MASK_REG);
-        __raw_writew(0xFFFF, CPLD_INT_RESET_REG);
-        __raw_writew(0, CPLD_INT_RESET_REG);
-        __raw_writew(0x1F, CPLD_INT_MASK_REG);
-        for (i = MXC_EXP_IO_BASE;
-             i < (MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES);
-             i++) {
-                set_irq_chip(i, &expio_irq_chip);
-                set_irq_handler(i, handle_level_irq);
-                set_irq_flags(i, IRQF_VALID);
-        }
-        set_irq_type(EXPIO_PARENT_INT, IRQ_TYPE_LEVEL_LOW);
-        set_irq_chained_handler(EXPIO_PARENT_INT, mx31_3ds_expio_irq_handler);
-
-        return 0;
-}
-
-/*
- * This structure defines the MX31 memory map.
- */
-static struct map_desc mx31_3ds_io_desc[] __initdata = {
-        {
-                .virtual = MX31_CS5_BASE_ADDR_VIRT,
-                .pfn = __phys_to_pfn(MX31_CS5_BASE_ADDR),
-                .length = MX31_CS5_SIZE,
-                .type = MT_DEVICE,
-        },
-};
-
-/*
  * Set up static virtual mappings.
  */
 static void __init mx31_3ds_map_io(void)
 {
         mx31_map_io();
-        iotable_init(mx31_3ds_io_desc, ARRAY_SIZE(mx31_3ds_io_desc));
 }
 
 /*!
@@ -390,10 +269,10 @@ static void __init mxc_board_init(void)
         mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
                                       "mx31_3ds");
 
-        mxc_register_device(&mxc_uart_device0, &uart_pdata);
-        mxc_register_device(&mxc_nand_device, &imx31_3ds_nand_flash_pdata);
+        imx31_add_imx_uart0(&uart_pdata);
+        imx31_add_mxc_nand(&mx31_3ds_nand_board_info);
 
-        mxc_register_device(&mxc_spi_device1, &spi1_pdata);
+        imx31_add_spi_imx0(&spi1_pdata);
         spi_register_board_info(mx31_3ds_spi_devs,
                                                 ARRAY_SIZE(mx31_3ds_spi_devs));
 
@@ -402,8 +281,9 @@ static void __init mxc_board_init(void)
         mx31_3ds_usbotg_init();
         mxc_register_device(&mxc_otg_udc_device, &usbotg_pdata);
 
-        if (!mx31_3ds_init_expio())
-                platform_device_register(&smsc911x_device);
+        if (!mxc_expio_init(CS5_BASE_ADDR, EXPIO_PARENT_INT))
+                printk(KERN_WARNING "Init of the debugboard failed, all "
+                                    "devices on the board are unusable.\n");
 }
 
 static void __init mx31_3ds_timer_init(void)