diff options
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index 728c64204184..1d959965ff52 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -29,6 +29,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/io.h> +#include <linux/slab.h> #include <asm/system.h> #include <mach/hardware.h> @@ -936,6 +937,15 @@ void omap_start_dma(int lch) { u32 l; + /* + * The CPC/CDAC register needs to be initialized to zero + * before starting dma transfer. + */ + if (cpu_is_omap15xx()) + dma_write(0, CPC(lch)); + else + dma_write(0, CDAC(lch)); + if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) { int next_lch, cur_lch; char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT]; @@ -1870,8 +1880,7 @@ 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) || \ - defined(CONFIG_ARCH_OMAP4) +#ifdef CONFIG_ARCH_OMAP2PLUS static int omap2_dma_handle_ch(int ch) { @@ -2133,13 +2142,13 @@ static int __init omap_init_dma(void) if (cpu_class_is_omap2()) { int irq; if (cpu_is_omap44xx()) - irq = INT_44XX_SDMA_IRQ0; + irq = OMAP44XX_IRQ_SDMA_0; else irq = INT_24XX_SDMA_IRQ0; setup_irq(irq, &omap24xx_dma_irq); } - if (cpu_is_omap34xx()) { + if (cpu_is_omap34xx() || cpu_is_omap44xx()) { /* Enable smartidle idlemodes and autoidle */ u32 v = dma_read(OCP_SYSCONFIG); v &= ~(DMA_SYSCONFIG_MIDLEMODE_MASK | @@ -2150,7 +2159,8 @@ static int __init omap_init_dma(void) DMA_SYSCONFIG_AUTOIDLE); dma_write(v , OCP_SYSCONFIG); /* reserve dma channels 0 and 1 in high security devices */ - if (omap_type() != OMAP2_DEVICE_TYPE_GP) { + if (cpu_is_omap34xx() && + (omap_type() != OMAP2_DEVICE_TYPE_GP)) { printk(KERN_INFO "Reserving DMA channels 0 and 1 for " "HS ROM code\n"); dma_chan[0].dev_id = 0; |