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authorTony Lindgren <tony@atomide.com>2005-09-07 12:20:26 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-09-07 12:20:26 -0400
commit92105bb70634abacc08bbe12bf6f888fbd7dad38 (patch)
tree194e3032671ee3a90644c68cda8ddf471cb09d0e /arch/arm/plat-omap/dma.c
parent7efb833d645d10258e32664404354d26cf6070e3 (diff)
[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.c25
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)
425 dma_chan[ch + 6].saved_csr = csr >> 7; 425 dma_chan[ch + 6].saved_csr = csr >> 7;
426 csr &= 0x7f; 426 csr &= 0x7f;
427 } 427 }
428 if (!csr) 428 if ((csr & 0x3f) == 0)
429 return 0; 429 return 0;
430 if (unlikely(dma_chan[ch].dev_id == -1)) { 430 if (unlikely(dma_chan[ch].dev_id == -1)) {
431 printk(KERN_WARNING "Spurious interrupt from DMA channel %d (CSR %04x)\n", 431 printk(KERN_WARNING "Spurious interrupt from DMA channel %d (CSR %04x)\n",
@@ -890,11 +890,11 @@ void omap_enable_lcd_dma(void)
890 w |= 1 << 8; 890 w |= 1 << 8;
891 omap_writew(w, OMAP1610_DMA_LCD_CTRL); 891 omap_writew(w, OMAP1610_DMA_LCD_CTRL);
892 892
893 lcd_dma.active = 1;
894
893 w = omap_readw(OMAP1610_DMA_LCD_CCR); 895 w = omap_readw(OMAP1610_DMA_LCD_CCR);
894 w |= 1 << 7; 896 w |= 1 << 7;
895 omap_writew(w, OMAP1610_DMA_LCD_CCR); 897 omap_writew(w, OMAP1610_DMA_LCD_CCR);
896
897 lcd_dma.active = 1;
898} 898}
899 899
900void omap_setup_lcd_dma(void) 900void omap_setup_lcd_dma(void)
@@ -965,8 +965,8 @@ void omap_clear_dma(int lch)
965 */ 965 */
966dma_addr_t omap_get_dma_src_pos(int lch) 966dma_addr_t omap_get_dma_src_pos(int lch)
967{ 967{
968 return (dma_addr_t) (OMAP_DMA_CSSA_L(lch) | 968 return (dma_addr_t) (omap_readw(OMAP_DMA_CSSA_L(lch)) |
969 (OMAP_DMA_CSSA_U(lch) << 16)); 969 (omap_readw(OMAP_DMA_CSSA_U(lch)) << 16));
970} 970}
971 971
972/* 972/*
@@ -979,8 +979,18 @@ dma_addr_t omap_get_dma_src_pos(int lch)
979 */ 979 */
980dma_addr_t omap_get_dma_dst_pos(int lch) 980dma_addr_t omap_get_dma_dst_pos(int lch)
981{ 981{
982 return (dma_addr_t) (OMAP_DMA_CDSA_L(lch) | 982 return (dma_addr_t) (omap_readw(OMAP_DMA_CDSA_L(lch)) |
983 (OMAP_DMA_CDSA_U(lch) << 16)); 983 (omap_readw(OMAP_DMA_CDSA_U(lch)) << 16));
984}
985
986/*
987 * Returns current source transfer counting for the given DMA channel.
988 * Can be used to monitor the progress of a transfer inside a block.
989 * It must be called with disabled interrupts.
990 */
991int omap_get_dma_src_addr_counter(int lch)
992{
993 return (dma_addr_t) omap_readw(OMAP_DMA_CSAC(lch));
984} 994}
985 995
986int omap_dma_running(void) 996int omap_dma_running(void)
@@ -1076,6 +1086,7 @@ arch_initcall(omap_init_dma);
1076 1086
1077EXPORT_SYMBOL(omap_get_dma_src_pos); 1087EXPORT_SYMBOL(omap_get_dma_src_pos);
1078EXPORT_SYMBOL(omap_get_dma_dst_pos); 1088EXPORT_SYMBOL(omap_get_dma_dst_pos);
1089EXPORT_SYMBOL(omap_get_dma_src_addr_counter);
1079EXPORT_SYMBOL(omap_clear_dma); 1090EXPORT_SYMBOL(omap_clear_dma);
1080EXPORT_SYMBOL(omap_set_dma_priority); 1091EXPORT_SYMBOL(omap_set_dma_priority);
1081EXPORT_SYMBOL(omap_request_dma); 1092EXPORT_SYMBOL(omap_request_dma);