summaryrefslogtreecommitdiff
path: root/arch/arm/plat-omap/dma.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
-rw-r--r--arch/arm/plat-omap/dma.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index def14ec265b3..e3ac94f09006 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -946,7 +946,9 @@ void omap_start_dma(int lch)
cur_lch = next_lch;
} while (next_lch != -1);
- } else if (cpu_class_is_omap2()) {
+ } else if (cpu_is_omap242x() ||
+ (cpu_is_omap243x() && omap_type() <= OMAP2430_REV_ES1_0)) {
+
/* Errata: Need to write lch even if not using chaining */
dma_write(lch, CLNK_CTRL(lch));
}
@@ -2457,6 +2459,19 @@ static int __init omap_init_dma(void)
setup_irq(irq, &omap24xx_dma_irq);
}
+ /* Enable smartidle idlemodes and autoidle */
+ if (cpu_is_omap34xx()) {
+ u32 v = dma_read(OCP_SYSCONFIG);
+ v &= ~(DMA_SYSCONFIG_MIDLEMODE_MASK |
+ DMA_SYSCONFIG_SIDLEMODE_MASK |
+ DMA_SYSCONFIG_AUTOIDLE);
+ v |= (DMA_SYSCONFIG_MIDLEMODE(DMA_IDLEMODE_SMARTIDLE) |
+ DMA_SYSCONFIG_SIDLEMODE(DMA_IDLEMODE_SMARTIDLE) |
+ DMA_SYSCONFIG_AUTOIDLE);
+ dma_write(v , OCP_SYSCONFIG);
+ }
+
+
/* FIXME: Update LCD DMA to work on 24xx */
if (cpu_class_is_omap1()) {
r = request_irq(INT_DMA_LCD, lcd_dma_irq_handler, 0,