i.MX31: Add support for the CPLD on PDK Debug board.

The i.MX31 PDK consists of several boards, one of them is a debug
board containing a CPLD which controls some debug leds, switch
buttons, an interrupt chip and an Ethernet controller.
This patch adds support for detecting if the PDK board is present
(during boot) and adds the interrupt chip to the kernel.

Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 51 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/include/mach/board-mx31pdk.h b/arch/arm/plat-mxc/include/mach/board-mx31pdk.h
index b1e6463f41af..519bab3eb28b 100644
--- a/arch/arm/plat-mxc/include/mach/board-mx31pdk.h
+++ b/arch/arm/plat-mxc/include/mach/board-mx31pdk.h
@@ -16,4 +16,49 @@
 #define MXC_LL_UART_PADDR       UART1_BASE_ADDR
 #define MXC_LL_UART_VADDR       AIPS1_IO_ADDRESS(UART1_BASE_ADDR)
 
+/* Definitions for components on the Debug board */
+
+/* Base address of CPLD controller on the Debug board */
+#define DEBUG_BASE_ADDRESS              CS5_IO_ADDRESS(CS5_BASE_ADDR)
+
+/* LAN9217 ethernet base address */
+#define LAN9217_BASE_ADDR               CS5_BASE_ADDR
+
+/* CPLD config and interrupt base address */
+#define CPLD_ADDR                       (DEBUG_BASE_ADDRESS + 0x20000)
+
+/* LED switchs */
+#define CPLD_LED_REG                    (CPLD_ADDR + 0x00)
+/* buttons */
+#define CPLD_SWITCH_BUTTONS_REG (EXPIO_ADDR + 0x08)
+/* 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)
+/* module reset register */
+#define CPLD_MODULE_RESET_REG           (CPLD_ADDR + 0x60)
+/* CPU ID and Personality ID */
+#define CPLD_MCU_BOARD_ID_REG           (CPLD_ADDR + 0x68)
+
+/* 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 EXPIO_INT_XUART_A       (MXC_EXP_IO_BASE + 1)
+#define EXPIO_INT_XUART_B       (MXC_EXP_IO_BASE + 2)
+#define EXPIO_INT_BUTTON_A      (MXC_EXP_IO_BASE + 3)
+#define EXPIO_INT_BUTTON_B      (MXC_EXP_IO_BASE + 4)
+
+#define MXC_MAX_EXP_IO_LINES    16
+
 #endif /* __ASM_ARCH_MXC_BOARD_MX31PDK_H__ */
diff --git a/arch/arm/plat-mxc/include/mach/mx3x.h b/arch/arm/plat-mxc/include/mach/mx3x.h
index 3878c6085d5c..b559a4bb5769 100644
--- a/arch/arm/plat-mxc/include/mach/mx3x.h
+++ b/arch/arm/plat-mxc/include/mach/mx3x.h
@@ -48,6 +48,9 @@
 #define CS4_SIZE                SZ_32M
 
 #define CS5_BASE_ADDR           0xB6000000
+#define CS5_BASE_ADDR_VIRT      0xF6000000
+#define CS5_SIZE                SZ_32M
+
 #define PCMCIA_MEM_BASE_ADDR    0xBC000000
 
 /*
@@ -191,6 +194,9 @@
 #define CS4_IO_ADDRESS(x)  \
         (((x) - CS4_BASE_ADDR) + CS4_BASE_ADDR_VIRT)
 
+#define CS5_IO_ADDRESS(x)  \
+        (((x) - CS5_BASE_ADDR) + CS5_BASE_ADDR_VIRT)
+
 #define X_MEMC_IO_ADDRESS(x)  \
         (((x) - X_MEMC_BASE_ADDR) + X_MEMC_BASE_ADDR_VIRT)