#include <linux/init.h>
#include <linux/clk.h>
#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/smsc911x.h>
+#include <linux/platform_device.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
* @ingroup System
*/
+static int mx31pdk_pins[] = {
+ /* UART1 */
+ MX31_PIN_CTS1__CTS1,
+ MX31_PIN_RTS1__RTS1,
+ MX31_PIN_TXD1__TXD1,
+ MX31_PIN_RXD1__RXD1,
+ IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
+};
+
static struct imxuart_platform_data uart_pdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
-static int uart_pins[] = {
- MX31_PIN_CTS1__CTS1,
- MX31_PIN_RTS1__RTS1,
- MX31_PIN_TXD1__TXD1,
- MX31_PIN_RXD1__RXD1
+/*
+ * 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,
+ },
};
-static inline void mxc_init_imx_uart(void)
+/*
+ * Routines for the CPLD on the debug board. It contains a CPLD handling
+ * LEDs, switches, interrupts for Ethernet.
+ */
+
+static void mx31pdk_expio_irq_handler(uint32_t irq, struct irq_desc *desc)
{
- mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins), "uart-0");
- mxc_register_device(&mxc_uart_device0, &uart_pdata);
+ 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 mx31pdk_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.MX31PDK 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, mx31pdk_expio_irq_handler);
+
+ return 0;
+}
+
+/*
+ * This structure defines the MX31 memory map.
+ */
+static struct map_desc mx31pdk_io_desc[] __initdata = {
+ {
+ .virtual = SPBA0_BASE_ADDR_VIRT,
+ .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
+ .length = SPBA0_SIZE,
+ .type = MT_DEVICE_NONSHARED,
+ }, {
+ .virtual = CS5_BASE_ADDR_VIRT,
+ .pfn = __phys_to_pfn(CS5_BASE_ADDR),
+ .length = CS5_SIZE,
+ .type = MT_DEVICE,
+ },
+};
+
+/*
+ * Set up static virtual mappings.
+ */
+static void __init mx31pdk_map_io(void)
+{
+ mx31_map_io();
+ iotable_init(mx31pdk_io_desc, ARRAY_SIZE(mx31pdk_io_desc));
}
/*!
*/
static void __init mxc_board_init(void)
{
- mxc_init_imx_uart();
+ mxc_iomux_setup_multiple_pins(mx31pdk_pins, ARRAY_SIZE(mx31pdk_pins),
+ "mx31pdk");
+
+ mxc_register_device(&mxc_uart_device0, &uart_pdata);
+
+ if (!mx31pdk_init_expio())
+ platform_device_register(&smsc911x_device);
}
static void __init mx31pdk_timer_init(void)
.phys_io = AIPS1_BASE_ADDR,
.io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x100,
- .map_io = mxc_map_io,
+ .map_io = mx31pdk_map_io,
.init_irq = mxc_init_irq,
.init_machine = mxc_board_init,
.timer = &mx31pdk_timer,
git.openpandora.org / pandora-kernel.git / blobdiff