1 files changed, 68 insertions, 34 deletions

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 7fc8c045ad5..def14ec265b 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -10,6 +10,9 @@
  * Merged to support both OMAP1 and OMAP2 by Tony Lindgren <tony@atomide.com>
  * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc.
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * Support functions for the OMAP internal DMA channels.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -310,41 +313,62 @@ EXPORT_SYMBOL(omap_set_dma_transfer_params);
 
 void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
 {
-	u16 w;
-
 	BUG_ON(omap_dma_in_1510_mode());
 
-	if (cpu_class_is_omap2()) {
-		REVISIT_24XX();
-		return;
-	}
+	if (cpu_class_is_omap1()) {
+		u16 w;
 
-	w = dma_read(CCR2(lch));
-	w &= ~0x03;
+		w = dma_read(CCR2(lch));
+		w &= ~0x03;
 
-	switch (mode) {
-	case OMAP_DMA_CONSTANT_FILL:
-		w |= 0x01;
-		break;
-	case OMAP_DMA_TRANSPARENT_COPY:
-		w |= 0x02;
-		break;
-	case OMAP_DMA_COLOR_DIS:
-		break;
-	default:
-		BUG();
+		switch (mode) {
+		case OMAP_DMA_CONSTANT_FILL:
+			w |= 0x01;
+			break;
+		case OMAP_DMA_TRANSPARENT_COPY:
+			w |= 0x02;
+			break;
+		case OMAP_DMA_COLOR_DIS:
+			break;
+		default:
+			BUG();
+		}
+		dma_write(w, CCR2(lch));
+
+		w = dma_read(LCH_CTRL(lch));
+		w &= ~0x0f;
+		/* Default is channel type 2D */
+		if (mode) {
+			dma_write((u16)color, COLOR_L(lch));
+			dma_write((u16)(color >> 16), COLOR_U(lch));
+			w |= 1;		/* Channel type G */
+		}
+		dma_write(w, LCH_CTRL(lch));
 	}
-	dma_write(w, CCR2(lch));
 
-	w = dma_read(LCH_CTRL(lch));
-	w &= ~0x0f;
-	/* Default is channel type 2D */
-	if (mode) {
-		dma_write((u16)color, COLOR_L(lch));
-		dma_write((u16)(color >> 16), COLOR_U(lch));
-		w |= 1;		/* Channel type G */
+	if (cpu_class_is_omap2()) {
+		u32 val;
+
+		val = dma_read(CCR(lch));
+		val &= ~((1 << 17) | (1 << 16));
+
+		switch (mode) {
+		case OMAP_DMA_CONSTANT_FILL:
+			val |= 1 << 16;
+			break;
+		case OMAP_DMA_TRANSPARENT_COPY:
+			val |= 1 << 17;
+			break;
+		case OMAP_DMA_COLOR_DIS:
+			break;
+		default:
+			BUG();
+		}
+		dma_write(val, CCR(lch));
+
+		color &= 0xffffff;
+		dma_write(color, COLOR(lch));
 	}
-	dma_write(w, LCH_CTRL(lch));
 }
 EXPORT_SYMBOL(omap_set_dma_color_mode);
 
@@ -851,7 +875,7 @@ omap_dma_set_prio_lch(int lch, unsigned char read_prio,
 	}
 	l = dma_read(CCR(lch));
 	l &= ~((1 << 6) | (1 << 26));
-	if (cpu_is_omap2430() || cpu_is_omap34xx())
+	if (cpu_is_omap2430() || cpu_is_omap34xx() ||  cpu_is_omap44xx())
 		l |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26);
 	else
 		l |= ((read_prio & 0x1) << 6);
@@ -1199,7 +1223,7 @@ static void create_dma_lch_chain(int lch_head, int lch_queue)
  * 	     Failure: -EINVAL/-ENOMEM
  */
 int omap_request_dma_chain(int dev_id, const char *dev_name,
-			   void (*callback) (int chain_id, u16 ch_status,
+			   void (*callback) (int lch, u16 ch_status,
 					     void *data),
 			   int *chain_id, int no_of_chans, int chain_mode,
 			   struct omap_dma_channel_params params)
@@ -1823,7 +1847,8 @@ static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id)
 #define omap1_dma_irq_handler	NULL
 #endif
 
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+			defined(CONFIG_ARCH_OMAP4)
 
 static int omap2_dma_handle_ch(int ch)
 {
@@ -2318,6 +2343,9 @@ static int __init omap_init_dma(void)
 	} else if (cpu_is_omap34xx()) {
 		omap_dma_base = IO_ADDRESS(OMAP34XX_DMA4_BASE);
 		dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
+	} else if (cpu_is_omap44xx()) {
+		omap_dma_base = IO_ADDRESS(OMAP44XX_DMA4_BASE);
+		dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
 	} else {
 		pr_err("DMA init failed for unsupported omap\n");
 		return -ENODEV;
@@ -2416,12 +2444,18 @@ static int __init omap_init_dma(void)
 		}
 	}
 
-	if (cpu_is_omap2430() || cpu_is_omap34xx())
+	if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx())
 		omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE,
 				DMA_DEFAULT_FIFO_DEPTH, 0);
 
-	if (cpu_class_is_omap2())
-		setup_irq(INT_24XX_SDMA_IRQ0, &omap24xx_dma_irq);
+	if (cpu_class_is_omap2()) {
+		int irq;
+		if (cpu_is_omap44xx())
+			irq = INT_44XX_SDMA_IRQ0;
+		else
+			irq = INT_24XX_SDMA_IRQ0;
+		setup_irq(irq, &omap24xx_dma_irq);
+	}
 
 	/* FIXME: Update LCD DMA to work on 24xx */
 	if (cpu_class_is_omap1()) {