path: root/recipes/ti/files/dm355mm.patch

diff -uNr dm355_codecs_1_13_000/dm355mm/module/dm350mmap.c dm355_codecs_1_13_000.new/dm355mm/module/dm350mmap.c
--- dm355_codecs_1_13_000/dm355mm/module/dm350mmap.c	2009-05-20 11:22:57.000000000 -0500
+++ dm355_codecs_1_13_000.new/dm355mm/module/dm350mmap.c	2009-06-09 10:43:25.000000000 -0500
@@ -7,7 +7,7 @@
  * Use of this software is controlled by the terms and conditions found in the
  * license agreement under which this software has been supplied or provided.
  * ============================================================================
- */  
+ */
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/moduleparam.h>
@@ -20,274 +20,283 @@
 #include <linux/proc_fs.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
-  
+#include <linux/clk.h>
+
 #include <asm/page.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
-#include<asm/system.h>
-#include<asm-arm/memory.h>
+#include <asm/system.h>
+#include <asm/memory.h>
+
 #include <asm/irq.h>
-  
+
+#include <linux/version.h>
 #include <linux/completion.h>
-#include <asm/arch/edma.h>
-  
+#include <mach/edma.h>
+
 #define ASQINT_ENABLE
-  typedef struct _edma_params
-{
-  unsigned long src;
-   unsigned long dst;
-   unsigned int srcmode;
-   unsigned int srcfifowidth;
-   int srcbidx;
-   int srccidx;
-   unsigned int dstmode;
-   unsigned int dstfifowidth;
-   int dstbidx;
-   int dstcidx;
-   int acnt;
-   int bcnt;
-   int ccnt;
-   int bcntrld;
-   int syncmode;
- } edma_params;
+typedef struct _edma_params {
+    unsigned long src;
+    unsigned long dst;
+    unsigned int srcmode;
+    unsigned int srcfifowidth;
+    int     srcbidx;
+    int     srccidx;
+    unsigned int dstmode;
+    unsigned int dstfifowidth;
+    int     dstbidx;
+    int     dstcidx;
+    int     acnt;
+    int     bcnt;
+    int     ccnt;
+    int     bcntrld;
+    int     syncmode;
+} edma_params;
 
 #define DM350MMAP_IOCMEMCPY     0x7
 #define DM350MMAP_IOCWAIT       0x8
 #define DM350MMAP_IOCCLEAR_PENDING 0x9
-  
+
 #ifdef __DEBUG
-#define __D(fmt, args...) printk(KERN_DEBUG "DM350MMAP Debug: " fmt, ## args)
+#    define __D(fmt, args...) printk(KERN_DEBUG "DM350MMAP Debug: " fmt, ## args)
 #else /*  */
-#define __D(fmt, args...)
+#    define __D(fmt, args...)
 #endif /*  */
-  
+
 #define __E(fmt, args...) printk(KERN_ERR "DM350MMAP Error: " fmt, ## args)
-  
+
 #define MAXTYPE(T) ((T) (((T)1 << ((sizeof(T) * 8) - 1) ^ ((T) -1))))
-  
+
 static int major = 0;
 
 #if (USE_UDEV==1)
 static struct class *dm350mmap_class;
-
 #endif // USE_UDEV
-static DECLARE_MUTEX_LOCKED (dm350mmap_reply_mutex);
-int master_ch;
-struct completion edmacompletion;
-
-/* Forward declaration of system calls */ 
-static int ioctl (struct inode *inode, struct file *filp, unsigned int cmd,
-		  unsigned long args);
-static int mmap (struct file *filp, struct vm_area_struct *vma);
-static int open (struct inode *inode, struct file *filp);
-static int release (struct inode *inode, struct file *filp);
+
+static DECLARE_MUTEX(dm350mmap_reply_mutex);
+static struct completion edmacompletion;
+
+/* Forward declaration of system calls */
+static int ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+                 unsigned long args);
+static int mmap(struct file *filp, struct vm_area_struct *vma);
+static int open(struct inode *inode, struct file *filp);
+static int release(struct inode *inode, struct file *filp);
 static struct file_operations dm350mmap_fxns = { ioctl: ioctl, mmap: mmap, open: open, release:release
-    
 };
 
-static irqreturn_t irq_handler (int irq, void *dev_id, struct pt_regs *regs) 
+/* Structure to hold mjcp clock info */
+static struct clk *mjcp = NULL;
+
+//static irqreturn_t irq_handler (int irq, void *dev_id, struct pt_regs *regs) 
+static irqreturn_t irq_handler(int irq, void *dev_id)
 {
-  
-    /* Release the mutex, suggesting sequencer processing complete */ 
-    up (&dm350mmap_reply_mutex);
-  return IRQ_HANDLED;
+    /* Release the mutex, suggesting sequencer processing complete */
+    up(&dm350mmap_reply_mutex);
+    return IRQ_HANDLED;
 }
 
-static void memcpy_dma_irq_handler (int lch, u16 ch_status, void *data) 
+static void memcpy_dma_irq_handler(unsigned lch, u16 ch_status, void *data)
 {
-  complete_all (&edmacompletion);
-} 
+    complete_all(&edmacompletion);
+}
 
-static int mmap (struct file *filp, struct vm_area_struct *vma) 
+static int mmap(struct file *filp, struct vm_area_struct *vma)
 {
-  __D ("mmap: vma->vm_start     = %#lx\n", vma->vm_start);
-  __D ("mmap: vma->vm_pgoff     = %#lx\n", vma->vm_pgoff);
-  __D ("mmap: vma->vm_end       = %#lx\n", vma->vm_end);
-  __D ("mmap: size              = %#lx\n", vma->vm_end - vma->vm_start);
-  vma->vm_page_prot = pgprot_noncached (vma->vm_page_prot);
-  if (remap_pfn_range (vma, vma->vm_start, 
-
-#ifdef LINUX_2_6_18
-			 (vma->vm_pgoff >> PAGE_SHIFT), 
+    __D("mmap: vma->vm_start     = %#lx\n", vma->vm_start);
+    __D("mmap: vma->vm_pgoff     = %#lx\n", vma->vm_pgoff);
+    __D("mmap: vma->vm_end       = %#lx\n", vma->vm_end);
+    __D("mmap: size              = %#lx\n", vma->vm_end - vma->vm_start);
+    vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+    if (remap_pfn_range(vma, vma->vm_start,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
+                        (vma->vm_pgoff >> PAGE_SHIFT),
 #else /*  */
-			 vma->vm_pgoff, 
+                        vma->vm_pgoff,
 #endif /*  */
-			 
-			 vma->vm_end - vma->vm_start, vma->vm_page_prot))
-    {
-      __E ("mmap: failed remap_pfn_range\n");
-      return -EAGAIN;
+                        vma->vm_end - vma->vm_start, vma->vm_page_prot)) {
+        __E("mmap: failed remap_pfn_range\n");
+        return -EAGAIN;
     }
-  return 0;
+    return 0;
 }
 
 
-static int ioctl (struct inode *inode, struct file *filp, unsigned int cmd,
-       unsigned long args) 
+static int ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+                 unsigned long args)
 {
-  unsigned int __user *argp = (unsigned int __user *) args;
-  edma_params edmaparams;
-  int err = 0, tcc = EDMA_TCC_ANY;
-  struct paramentry_descriptor paramentry;
-  switch (cmd)
-    {
-      
-	/*
-	 * Tries to clear any previously unaccounted interrupt.
-	 */ 
-    case DM350MMAP_IOCCLEAR_PENDING:
-      
-      {
-	int retval;
-	__D ("Clear Pending Call received.\n");
-        init_MUTEX_LOCKED(&dm350mmap_reply_mutex);
-	return 0;
-      }
-      break;
-      
-	/*
-	 * Blocks till the sequencer completion interrupt arrives.
-	 */ 
-    case DM350MMAP_IOCWAIT:
-      
-      {
-	int retval;
-	__D ("WAIT Call received.\n");
-	retval = down_interruptible (&dm350mmap_reply_mutex);
-	return retval;
-      }
-      break;
-    case DM350MMAP_IOCMEMCPY:
-      __D ("MEMCPY ioctl received.\n");
-      if (copy_from_user (&edmaparams, argp, sizeof (edmaparams)))
-	{
-	  return -EFAULT;
-	}
-      err =
-	davinci_request_dma (EDMA_DMA_CHANNEL_ANY, "EDMA memcpy",
-			     memcpy_dma_irq_handler, NULL, &master_ch, &tcc,
-			     EVENTQ_1);
-      
-	/* Handle Failure condition here */ 
-	if (err < 0)
-	{
-	  __E ("Error in requesting Master channel %d = 0x%x\n", master_ch,
-		err);
-	  return err;
-	}
-      davinci_stop_dma (master_ch);
-      init_completion (&edmacompletion);
-      davinci_set_dma_src_params (master_ch, 
-				    (unsigned long) edmaparams.src,
-				    edmaparams.srcmode,
-				    edmaparams.srcfifowidth);
-      davinci_set_dma_dest_params (master_ch,
-				    (unsigned long) edmaparams.dst,
-				    edmaparams.dstmode,
-				    edmaparams.dstfifowidth);
-      davinci_set_dma_src_index (master_ch, edmaparams.srcbidx,
-				   edmaparams.srccidx);
-      davinci_set_dma_dest_index (master_ch, edmaparams.dstbidx,
-				   edmaparams.dstcidx);
-      davinci_set_dma_transfer_params (master_ch, edmaparams.acnt,
-					 edmaparams.bcnt, edmaparams.ccnt,
-					 edmaparams.bcntrld,
-					 edmaparams.syncmode);
-      davinci_get_dma_params (master_ch, &paramentry);
-      
-	/*printk("%x : %x : %x : %x : %x : %x : %x\n", paramentry.opt,
-	   paramentry.a_b_cnt, paramentry.src_dst_bidx,
-	   paramentry.src_dst_cidx, paramentry.ccnt, paramentry.src,
-	   paramentry.dst); */ 
-	davinci_set_dma_params (master_ch, &paramentry);
-      davinci_start_dma (master_ch);
-      wait_for_completion (&edmacompletion);
-      
-	//printk("Dma completed... \n");
-	davinci_stop_dma (master_ch);
-      davinci_free_dma (master_ch);
-      break;
-    default:
-      __E ("Unknown ioctl received = %d.\n", cmd);
-      return -EINVAL;
+    unsigned int __user *argp = (unsigned int __user *) args;
+    edma_params edmaparams;
+    int     edma_channel;
+    int     retval = 0;
+    struct edmacc_param p_ram;
+
+    switch (cmd) {
+
+            /*
+             * Tries to clear any previously unaccounted interrupt.
+             */
+        case DM350MMAP_IOCCLEAR_PENDING:
+            __D("Clear Pending Call received.\n");
+            init_MUTEX_LOCKED(&dm350mmap_reply_mutex);
+            break;
+
+            /*
+             * Blocks till the sequencer completion interrupt arrives.
+             */
+        case DM350MMAP_IOCWAIT:
+            __D("WAIT Call received.\n");
+            retval = down_interruptible(&dm350mmap_reply_mutex);
+            break;
+
+        case DM350MMAP_IOCMEMCPY:
+            __D("MEMCPY ioctl received.\n");
+            if (copy_from_user(&edmaparams, argp, sizeof(edmaparams))) {
+                retval = -EFAULT;
+                break;
+            }
+
+            edma_channel =
+                edma_alloc_channel(EDMA_CHANNEL_ANY, &memcpy_dma_irq_handler,
+                                   NULL, EVENTQ_1);
+
+            /* Handle Failure condition here */
+            if (edma_channel < 0) {
+                __E("Error in requesting Master channel = 0x%x\n",
+                    edma_channel);
+                retval = edma_channel;
+                break;
+            }
+
+            edma_stop(edma_channel);
+
+            init_completion(&edmacompletion);
+
+            edma_set_src(edma_channel,
+                         (dma_addr_t) edmaparams.src,
+                         edmaparams.srcmode, edmaparams.srcfifowidth);
+
+            edma_set_dest(edma_channel,
+                          (dma_addr_t) edmaparams.dst,
+                          edmaparams.dstmode, edmaparams.dstfifowidth);
+
+            edma_set_src_index(edma_channel, edmaparams.srcbidx,
+                               edmaparams.srccidx);
+            edma_set_dest_index(edma_channel, edmaparams.dstbidx,
+                                edmaparams.dstcidx);
+
+            edma_set_transfer_params(edma_channel,
+                                     edmaparams.acnt,
+                                     edmaparams.bcnt,
+                                     edmaparams.ccnt,
+                                     edmaparams.bcntrld, edmaparams.syncmode);
+
+            edma_read_slot(edma_channel, &p_ram);
+            p_ram.opt |= TCINTEN | EDMA_TCC(edma_channel);
+            edma_write_slot(edma_channel, &p_ram);
+
+            edma_start(edma_channel);
+            wait_for_completion(&edmacompletion);
+            edma_stop(edma_channel);
+            edma_free_channel(edma_channel);
+            break;
+
+        default:
+            __E("Unknown ioctl received = %d.\n", cmd);
+            retval = -EINVAL;
+            break;
     }
-  return 0;
+
+    return retval;
 }
 
 
-static int open (struct inode *inode, struct file *filp) 
+static int open(struct inode *inode, struct file *filp)
 {
-  __D ("open: called.\n");
-  return 0;
+    __D("open: called.\n");
+    return 0;
 }
 
 
-static int release (struct inode *inode, struct file *filp) 
+static int release(struct inode *inode, struct file *filp)
 {
-  __D ("close: called.");
-  return 0;
+    __D("close: called.");
+    return 0;
 }
 
 
-int __init dm350mmap_init (void) 
+int __init dm350mmap_init(void)
 {
-  __D ("** DM350MMAP kernel module built: " __DATE__ " " __TIME__ "\n");
-  major = register_chrdev (0, "dm350mmap", &dm350mmap_fxns);
-  if (major < 0)
-    {
-      __E ("Failed to allocate major number.\n");
-      return -ENODEV;
+    /* In the GIT kernel unused clocks are disabled. To run codec we need to 
+     * enable mjcp clock.
+     */
+    mjcp = clk_get(NULL, "mjcp");
+    if (IS_ERR(mjcp))
+        printk(KERN_WARNING "unable to get MJCP clock\n");
+    else
+        clk_enable(mjcp);
+     
+    __D("** DM350MMAP kernel module built: " __DATE__ " " __TIME__ "\n");
+    major = register_chrdev(0, "dm350mmap", &dm350mmap_fxns);
+    if (major < 0) {
+        __E("Failed to allocate major number.\n");
+        return -ENODEV;
     }
-  __D ("Allocated major number: %d\n", major);
-  
+    __D("Allocated major number: %d\n", major);
+
 #if (USE_UDEV==1)
-    dm350mmap_class = class_create (THIS_MODULE, "dm350mmap");
-  if (IS_ERR (dm350mmap_class))
-    {
-      __E ("Error creating dm350mmap device class.\n");
-      return -EIO;
+    dm350mmap_class = class_create(THIS_MODULE, "dm350mmap");
+    if (IS_ERR(dm350mmap_class)) {
+        __E("Error creating dm350mmap device class.\n");
+        return -EIO;
     }
-  class_device_create (dm350mmap_class, NULL, MKDEV (major, 0), NULL,
-			"dm350mmap");
-  
+    class_device_create(dm350mmap_class, NULL, MKDEV(major, 0), NULL,
+                        "dm350mmap");
+
 #endif // USE_UDEV
-    __D ("Successfully initialized module\n");
-  
+    __D("Successfully initialized module\n");
+
 #ifdef ASQINT_ENABLE
-    if (request_irq (IRQ_ASQINT, irq_handler, 0, "seq_arm_interrupt", NULL))
-    {
-      __D ("Could not install ISR\n");
+    if (request_irq(IRQ_ASQINT, irq_handler, 0, "seq_arm_interrupt", NULL)) {
+        __D("Could not install ISR\n");
     }
-  
+
 #endif /*  */
+    init_MUTEX_LOCKED(&dm350mmap_reply_mutex);
     return 0;
 }
 
 
-void __exit dm350mmap_exit (void) 
+void __exit dm350mmap_exit(void)
 {
-  __D ("In dm350mmap_exit()\n");
-  
+    /* if mjcp clock is enabled then free it */
+    if (mjcp) {
+        clk_disable(mjcp);
+        clk_put(mjcp);
+    }
+
+    __D("In dm350mmap_exit()\n");
+
 #if (USE_UDEV==1)
-    class_device_destroy (dm350mmap_class, MKDEV (major, 0));
-  class_destroy (dm350mmap_class);
-  
+    class_device_destroy(dm350mmap_class, MKDEV(major, 0));
+    class_destroy(dm350mmap_class);
+
 #endif // USE_UDEV
-    __D ("Unregistering character device dm350mmap\n");
-  unregister_chrdev (major, "dm350mmap");
-  
+    __D("Unregistering character device dm350mmap\n");
+    unregister_chrdev(major, "dm350mmap");
+
 #ifdef ASQINT_ENABLE
-    free_irq (IRQ_ASQINT, NULL);
-  
+    free_irq(IRQ_ASQINT, NULL);
+
 #endif /*  */
-    __D ("dm350mmap unregistered\n");
-} 
+    __D("dm350mmap unregistered\n");
+}
 
-module_init (dm350mmap_init);
+module_init(dm350mmap_init);
 
-module_exit (dm350mmap_exit);
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("Texas Instruments");
-MODULE_DESCRIPTION ("DM350 mmap export to userland");
+module_exit(dm350mmap_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("DM350 mmap export to userland");