diff options
author | Tony Lindgren <tony@atomide.com> | 2005-09-07 17:20:26 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-09-07 17:20:26 +0100 |
commit | 92105bb70634abacc08bbe12bf6f888fbd7dad38 (patch) | |
tree | 194e3032671ee3a90644c68cda8ddf471cb09d0e /arch/arm/plat-omap/dma.c | |
parent | 7efb833d645d10258e32664404354d26cf6070e3 (diff) | |
download | linux-92105bb70634abacc08bbe12bf6f888fbd7dad38.tar.bz2 |
[ARM] 2887/1: OMAP 2/4: Update files common to omap1 and omap2, take 2
Patch from Tony Lindgren
This patch syncs the mainline kernel with linux-omap tree.
The highlights of the patch are:
- Clock updates by Tuukka Tikkanen, Juha Yrjola,
Daniel Petrini and Tony Lindgren
- DMA fixes by Imre Deak, Juha Yrjola and Daniel Petrini
- Add support to dual-mode hardware timers by Lauri Leukkunen
- GPIO support for 24xx by Paul Mundt
- GPIO wake-up support by Tony Lindgren
- Better GPIO interrupt handler to not lose interrupts by
Ralph Walden and Ladislav Michl
- Power Management updates by Tuukka Tikkanen
- Make Power Management code use new SRAM functions by
Tony Lindgren
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
-rw-r--r-- | arch/arm/plat-omap/dma.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index c0a5c2fa42bd..da7b65145658 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -425,7 +425,7 @@ static int dma_handle_ch(int ch) dma_chan[ch + 6].saved_csr = csr >> 7; csr &= 0x7f; } - if (!csr) + if ((csr & 0x3f) == 0) return 0; if (unlikely(dma_chan[ch].dev_id == -1)) { printk(KERN_WARNING "Spurious interrupt from DMA channel %d (CSR %04x)\n", @@ -890,11 +890,11 @@ void omap_enable_lcd_dma(void) w |= 1 << 8; omap_writew(w, OMAP1610_DMA_LCD_CTRL); + lcd_dma.active = 1; + w = omap_readw(OMAP1610_DMA_LCD_CCR); w |= 1 << 7; omap_writew(w, OMAP1610_DMA_LCD_CCR); - - lcd_dma.active = 1; } void omap_setup_lcd_dma(void) @@ -965,8 +965,8 @@ void omap_clear_dma(int lch) */ dma_addr_t omap_get_dma_src_pos(int lch) { - return (dma_addr_t) (OMAP_DMA_CSSA_L(lch) | - (OMAP_DMA_CSSA_U(lch) << 16)); + return (dma_addr_t) (omap_readw(OMAP_DMA_CSSA_L(lch)) | + (omap_readw(OMAP_DMA_CSSA_U(lch)) << 16)); } /* @@ -979,8 +979,18 @@ dma_addr_t omap_get_dma_src_pos(int lch) */ dma_addr_t omap_get_dma_dst_pos(int lch) { - return (dma_addr_t) (OMAP_DMA_CDSA_L(lch) | - (OMAP_DMA_CDSA_U(lch) << 16)); + return (dma_addr_t) (omap_readw(OMAP_DMA_CDSA_L(lch)) | + (omap_readw(OMAP_DMA_CDSA_U(lch)) << 16)); +} + +/* + * Returns current source transfer counting for the given DMA channel. + * Can be used to monitor the progress of a transfer inside a block. + * It must be called with disabled interrupts. + */ +int omap_get_dma_src_addr_counter(int lch) +{ + return (dma_addr_t) omap_readw(OMAP_DMA_CSAC(lch)); } int omap_dma_running(void) @@ -1076,6 +1086,7 @@ arch_initcall(omap_init_dma); EXPORT_SYMBOL(omap_get_dma_src_pos); EXPORT_SYMBOL(omap_get_dma_dst_pos); +EXPORT_SYMBOL(omap_get_dma_src_addr_counter); EXPORT_SYMBOL(omap_clear_dma); EXPORT_SYMBOL(omap_set_dma_priority); EXPORT_SYMBOL(omap_request_dma); |