8 files changed, 303 insertions, 3 deletions

diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile
index 996cbac6932c..6cee38df58b2 100644
--- a/arch/arm/plat-mxc/Makefile
+++ b/arch/arm/plat-mxc/Makefile
@@ -13,3 +13,7 @@ obj-$(CONFIG_USB_EHCI_MXC) += ehci.o
 obj-$(CONFIG_MXC_ULPI) += ulpi.o
 obj-$(CONFIG_ARCH_MXC_AUDMUX_V1) += audmux-v1.o
 obj-$(CONFIG_ARCH_MXC_AUDMUX_V2) += audmux-v2.o
+ifdef CONFIG_SND_IMX_SOC
+obj-y += ssi-fiq.o
+obj-y += ssi-fiq-ksym.o
+endif
diff --git a/arch/arm/plat-mxc/audmux-v2.c b/arch/arm/plat-mxc/audmux-v2.c
index 6f21096086fd..b06954a84436 100644
--- a/arch/arm/plat-mxc/audmux-v2.c
+++ b/arch/arm/plat-mxc/audmux-v2.c
@@ -23,6 +23,7 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/clk.h>
+#include <linux/debugfs.h>
 #include <mach/audmux.h>
 #include <mach/hardware.h>
 
@@ -32,6 +33,140 @@ static void __iomem *audmux_base;
 #define MXC_AUDMUX_V2_PTCR(x)           ((x) * 8)
 #define MXC_AUDMUX_V2_PDCR(x)           ((x) * 8 + 4)
 
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *audmux_debugfs_root;
+
+static int audmux_open_file(struct inode *inode, struct file *file)
+{
+        file->private_data = inode->i_private;
+        return 0;
+}
+
+/* There is an annoying discontinuity in the SSI numbering with regard
+ * to the Linux number of the devices */
+static const char *audmux_port_string(int port)
+{
+        switch (port) {
+        case MX31_AUDMUX_PORT1_SSI0:
+                return "imx-ssi.0";
+        case MX31_AUDMUX_PORT2_SSI1:
+                return "imx-ssi.1";
+        case MX31_AUDMUX_PORT3_SSI_PINS_3:
+                return "SSI3";
+        case MX31_AUDMUX_PORT4_SSI_PINS_4:
+                return "SSI4";
+        case MX31_AUDMUX_PORT5_SSI_PINS_5:
+                return "SSI5";
+        case MX31_AUDMUX_PORT6_SSI_PINS_6:
+                return "SSI6";
+        default:
+                return "UNKNOWN";
+        }
+}
+
+static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
+                                size_t count, loff_t *ppos)
+{
+        ssize_t ret;
+        char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+        int port = (int)file->private_data;
+        u32 pdcr, ptcr;
+
+        if (!buf)
+                return -ENOMEM;
+
+        if (audmux_clk)
+                clk_enable(audmux_clk);
+
+        ptcr = readl(audmux_base + MXC_AUDMUX_V2_PTCR(port));
+        pdcr = readl(audmux_base + MXC_AUDMUX_V2_PDCR(port));
+
+        if (audmux_clk)
+                clk_disable(audmux_clk);
+
+        ret = snprintf(buf, PAGE_SIZE, "PDCR: %08x\nPTCR: %08x\n",
+                       pdcr, ptcr);
+
+        if (ptcr & MXC_AUDMUX_V2_PTCR_TFSDIR)
+                ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                "TxFS output from %s, ",
+                                audmux_port_string((ptcr >> 27) & 0x7));
+        else
+                ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                "TxFS input, ");
+
+        if (ptcr & MXC_AUDMUX_V2_PTCR_TCLKDIR)
+                ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                "TxClk output from %s",
+                                audmux_port_string((ptcr >> 22) & 0x7));
+        else
+                ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                "TxClk input");
+
+        ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
+
+        if (ptcr & MXC_AUDMUX_V2_PTCR_SYN) {
+                ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                "Port is symmetric");
+        } else {
+                if (ptcr & MXC_AUDMUX_V2_PTCR_RFSDIR)
+                        ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                        "RxFS output from %s, ",
+                                        audmux_port_string((ptcr >> 17) & 0x7));
+                else
+                        ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                        "RxFS input, ");
+
+                if (ptcr & MXC_AUDMUX_V2_PTCR_RCLKDIR)
+                        ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                        "RxClk output from %s",
+                                        audmux_port_string((ptcr >> 12) & 0x7));
+                else
+                        ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                                        "RxClk input");
+        }
+
+        ret += snprintf(buf + ret, PAGE_SIZE - ret,
+                        "\nData received from %s\n",
+                        audmux_port_string((pdcr >> 13) & 0x7));
+
+        ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+
+        kfree(buf);
+
+        return ret;
+}
+
+static const struct file_operations audmux_debugfs_fops = {
+        .open = audmux_open_file,
+        .read = audmux_read_file,
+};
+
+static void audmux_debugfs_init(void)
+{
+        int i;
+        char buf[20];
+
+        audmux_debugfs_root = debugfs_create_dir("audmux", NULL);
+        if (!audmux_debugfs_root) {
+                pr_warning("Failed to create AUDMUX debugfs root\n");
+                return;
+        }
+
+        for (i = 1; i < 8; i++) {
+                snprintf(buf, sizeof(buf), "ssi%d", i);
+                if (!debugfs_create_file(buf, 0444, audmux_debugfs_root,
+                                         (void *)i, &audmux_debugfs_fops))
+                        pr_warning("Failed to create AUDMUX port %d debugfs file\n",
+                                   i);
+        }
+}
+#else
+static inline void audmux_debugfs_init(void)
+{
+}
+#endif
+
 int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
                 unsigned int pdcr)
 {
@@ -68,6 +203,8 @@ static int mxc_audmux_v2_init(void)
         if (cpu_is_mx31() || cpu_is_mx35())
                 audmux_base = IO_ADDRESS(AUDMUX_BASE_ADDR);
 
+        audmux_debugfs_init();
+
         return 0;
 }
 
diff --git a/arch/arm/plat-mxc/include/mach/board-mx31lite.h b/arch/arm/plat-mxc/include/mach/board-mx31lite.h
index 0184b638c268..2b2da0367578 100644
--- a/arch/arm/plat-mxc/include/mach/board-mx31lite.h
+++ b/arch/arm/plat-mxc/include/mach/board-mx31lite.h
@@ -25,7 +25,7 @@
 
 #ifndef __ASSEMBLY__
 
-enum mx31lilly_boards {
+enum mx31lite_boards {
         MX31LITE_NOBOARD        = 0,
         MX31LITE_DB             = 1,
 };
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 286cb9b0a25b..4bf1068ffad9 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -32,7 +32,7 @@ extern void mxc91231_init_irq(void);
 extern void mxc_timer_init(struct clk *timer_clk, void __iomem *, int);
 extern int mx1_clocks_init(unsigned long fref);
 extern int mx21_clocks_init(unsigned long lref, unsigned long fref);
-extern int mx25_clocks_init(unsigned long fref);
+extern int mx25_clocks_init(void);
 extern int mx27_clocks_init(unsigned long fref);
 extern int mx31_clocks_init(unsigned long fref);
 extern int mx35_clocks_init(void);
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx35.h b/arch/arm/plat-mxc/include/mach/iomux-mx35.h
index 00b0ac1db225..c88d40795f7a 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx35.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx35.h
@@ -671,7 +671,7 @@
 #define MX35_PAD_LD8__SDMA_SDMA_DEBUG_PC_8                      IOMUX_PAD(0x634, 0x1d0, 6, 0x0,   0, NO_PAD_CTRL)
 
 #define MX35_PAD_LD9__IPU_DISPB_DAT_9                           IOMUX_PAD(0x638, 0x1d4, 0, 0x0,   0, NO_PAD_CTRL)
-#define MX35_PAD_LD9__GPIO2_9                                   IOMUX_PAD(0x638, 0x1d4, 5, 0x8e4  0, NO_PAD_CTRL)
+#define MX35_PAD_LD9__GPIO2_9                                   IOMUX_PAD(0x638, 0x1d4, 5, 0x8e4, 0, NO_PAD_CTRL)
 #define MX35_PAD_LD9__SDMA_SDMA_DEBUG_PC_9                      IOMUX_PAD(0x638, 0x1d4, 6, 0x0,   0, NO_PAD_CTRL)
 
 #define MX35_PAD_LD10__IPU_DISPB_DAT_10                         IOMUX_PAD(0x63c, 0x1d8, 0, 0x0,   0, NO_PAD_CTRL)
diff --git a/arch/arm/plat-mxc/include/mach/irqs.h b/arch/arm/plat-mxc/include/mach/irqs.h
index ead9d592168d..0cb347645db4 100644
--- a/arch/arm/plat-mxc/include/mach/irqs.h
+++ b/arch/arm/plat-mxc/include/mach/irqs.h
@@ -37,7 +37,12 @@
  * within sensible limits.
  */
 #define MXC_BOARD_IRQ_START     (MXC_INTERNAL_IRQS + MXC_GPIO_IRQS)
+
+#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
+#define MXC_BOARD_IRQS  80
+#else
 #define MXC_BOARD_IRQS  16
+#endif
 
 #define MXC_IPU_IRQ_START       (MXC_BOARD_IRQ_START + MXC_BOARD_IRQS)
 
diff --git a/arch/arm/plat-mxc/ssi-fiq-ksym.c b/arch/arm/plat-mxc/ssi-fiq-ksym.c
new file mode 100644
index 000000000000..b5fad454da78
--- /dev/null
+++ b/arch/arm/plat-mxc/ssi-fiq-ksym.c
@@ -0,0 +1,20 @@
+/*
+ * Exported ksyms for the SSI FIQ handler
+ *
+ * Copyright (C) 2009, Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * 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/module.h>
+
+#include <mach/ssi.h>
+
+EXPORT_SYMBOL(imx_ssi_fiq_tx_buffer);
+EXPORT_SYMBOL(imx_ssi_fiq_rx_buffer);
+EXPORT_SYMBOL(imx_ssi_fiq_start);
+EXPORT_SYMBOL(imx_ssi_fiq_end);
+EXPORT_SYMBOL(imx_ssi_fiq_base);
+
diff --git a/arch/arm/plat-mxc/ssi-fiq.S b/arch/arm/plat-mxc/ssi-fiq.S
new file mode 100644
index 000000000000..4ddce565b353
--- /dev/null
+++ b/arch/arm/plat-mxc/ssi-fiq.S
@@ -0,0 +1,134 @@
+/*
+ *  Copyright (C) 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * 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/linkage.h>
+#include <asm/assembler.h>
+
+/*
+ * r8  = bit 0-15: tx offset, bit 16-31: tx buffer size
+ * r9  = bit 0-15: rx offset, bit 16-31: rx buffer size
+ */
+
+#define SSI_STX0        0x00
+#define SSI_SRX0        0x08
+#define SSI_SISR        0x14
+#define SSI_SIER        0x18
+#define SSI_SACNT       0x38
+
+#define SSI_SACNT_AC97EN        (1 << 0)
+
+#define SSI_SIER_TFE0_EN        (1 << 0)
+#define SSI_SISR_TFE0           (1 << 0)
+#define SSI_SISR_RFF0           (1 << 2)
+#define SSI_SIER_RFF0_EN        (1 << 2)
+
+                .text
+                .global imx_ssi_fiq_start
+                .global imx_ssi_fiq_end
+                .global imx_ssi_fiq_base
+                .global imx_ssi_fiq_rx_buffer
+                .global imx_ssi_fiq_tx_buffer
+
+imx_ssi_fiq_start:
+                ldr r12, imx_ssi_fiq_base
+
+                /* TX */
+                ldr r11, imx_ssi_fiq_tx_buffer
+
+                /* shall we send? */
+                ldr r13, [r12, #SSI_SIER]
+                tst r13, #SSI_SIER_TFE0_EN
+                beq 1f
+
+                /* TX FIFO empty? */
+                ldr r13, [r12, #SSI_SISR]
+                tst r13, #SSI_SISR_TFE0
+                beq 1f
+
+                mov r10, #0x10000
+                sub r10, #1
+                and r10, r10, r8        /* r10: current buffer offset */
+
+                add r11, r11, r10
+
+                ldrh r13, [r11]
+                strh r13, [r12, #SSI_STX0]
+
+                ldrh r13, [r11, #2]
+                strh r13, [r12, #SSI_STX0]
+
+                ldrh r13, [r11, #4]
+                strh r13, [r12, #SSI_STX0]
+
+                ldrh r13, [r11, #6]
+                strh r13, [r12, #SSI_STX0]
+
+                add r10, #8
+                lsr r13, r8, #16        /* r13: buffer size */
+                cmp r10, r13
+                lslgt r8, r13, #16
+                addle r8, #8
+1:
+                /* RX */
+
+                /* shall we receive? */
+                ldr r13, [r12, #SSI_SIER]
+                tst r13, #SSI_SIER_RFF0_EN
+                beq 1f
+
+                /* RX FIFO full? */
+                ldr r13, [r12, #SSI_SISR]
+                tst r13, #SSI_SISR_RFF0
+                beq 1f
+
+                ldr r11, imx_ssi_fiq_rx_buffer
+
+                mov r10, #0x10000
+                sub r10, #1
+                and r10, r10, r9        /* r10: current buffer offset */
+
+                add r11, r11, r10
+
+                ldr r13, [r12, #SSI_SACNT]
+                tst r13, #SSI_SACNT_AC97EN
+
+                ldr r13, [r12, #SSI_SRX0]
+                strh r13, [r11]
+
+                ldr r13, [r12, #SSI_SRX0]
+                strh r13, [r11, #2]
+
+                /* dummy read to skip slot 12 */
+                ldrne r13, [r12, #SSI_SRX0]
+
+                ldr r13, [r12, #SSI_SRX0]
+                strh r13, [r11, #4]
+
+                ldr r13, [r12, #SSI_SRX0]
+                strh r13, [r11, #6]
+
+                /* dummy read to skip slot 12 */
+                ldrne r13, [r12, #SSI_SRX0]
+
+                add r10, #8
+                lsr r13, r9, #16        /* r13: buffer size */
+                cmp r10, r13
+                lslgt r9, r13, #16
+                addle r9, #8
+
+1:
+                @ return from FIQ
+                subs    pc, lr, #4
+imx_ssi_fiq_base:
+                .word 0x0
+imx_ssi_fiq_rx_buffer:
+                .word 0x0
+imx_ssi_fiq_tx_buffer:
+                .word 0x0
+imx_ssi_fiq_end:
+