From 5aa12e8c9c57741606e52f43e62ab1b9dc8e9dcc Mon Sep 17 00:00:00 2001 From: Jonas Aaberg Date: Sun, 20 Jun 2010 21:26:14 +0000 Subject: DMAENGINE: ste_dma40: arch updates for LCLA and LCPA This follows on the patch to allocate LCLA dynamically: the on-chip memory is needed for other things so now that that we're using it dynamically we can remove the LCLA resource altogether and free up some ESRAM memory. Signed-off-by: Jonas Aaberg Signed-off-by: Linus Walleij Signed-off-by: Dan Williams --- arch/arm/mach-ux500/devices-db8500.c | 19 +++++++------------ arch/arm/mach-ux500/include/mach/db8500-regs.h | 5 ++--- 2 files changed, 9 insertions(+), 15 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c index 82290342194..638964e614e 100644 --- a/arch/arm/mach-ux500/devices-db8500.c +++ b/arch/arm/mach-ux500/devices-db8500.c @@ -113,26 +113,21 @@ struct platform_device u8500_i2c4_device = { static struct resource dma40_resources[] = { [0] = { .start = U8500_DMA_BASE, - .end = U8500_DMA_BASE + SZ_4K - 1, + .end = U8500_DMA_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, - .name = "base", + .name = "base", }, [1] = { .start = U8500_DMA_LCPA_BASE, - .end = U8500_DMA_LCPA_BASE + SZ_4K - 1, + .end = U8500_DMA_LCPA_BASE + 2 * SZ_1K - 1, .flags = IORESOURCE_MEM, - .name = "lcpa", + .name = "lcpa", }, [2] = { - .start = U8500_DMA_LCLA_BASE, - .end = U8500_DMA_LCLA_BASE + 16 * 1024 - 1, - .flags = IORESOURCE_MEM, - .name = "lcla", - }, - [3] = { .start = IRQ_DMA, - .end = IRQ_DMA, - .flags = IORESOURCE_IRQ} + .end = IRQ_DMA, + .flags = IORESOURCE_IRQ, + } }; /* Default configuration for physcial memcpy */ diff --git a/arch/arm/mach-ux500/include/mach/db8500-regs.h b/arch/arm/mach-ux500/include/mach/db8500-regs.h index 85fc6a80b38..897fa35078e 100644 --- a/arch/arm/mach-ux500/include/mach/db8500-regs.h +++ b/arch/arm/mach-ux500/include/mach/db8500-regs.h @@ -15,9 +15,8 @@ #define U8500_ESRAM_BANK2 (U8500_ESRAM_BANK1 + U8500_ESRAM_BANK_SIZE) #define U8500_ESRAM_BANK3 (U8500_ESRAM_BANK2 + U8500_ESRAM_BANK_SIZE) #define U8500_ESRAM_BANK4 (U8500_ESRAM_BANK3 + U8500_ESRAM_BANK_SIZE) -/* Use bank 4 for DMA LCLA and LCPA */ -#define U8500_DMA_LCLA_BASE U8500_ESRAM_BANK4 -#define U8500_DMA_LCPA_BASE (U8500_ESRAM_BANK4 + 0x4000) +/* Use bank 4 for DMA LCPA */ +#define U8500_DMA_LCPA_BASE U8500_ESRAM_BANK4 #define U8500_PER3_BASE 0x80000000 #define U8500_STM_BASE 0x80100000 -- cgit v1.2.3-18-g5258 From ef934aea861323820cb39051e94a52319f456fbe Mon Sep 17 00:00:00 2001 From: Jonas Aaberg Date: Sun, 20 Jun 2010 21:26:22 +0000 Subject: DMAENGINE: ste_dma40: no flow control on memcpy On memcpy DMA operations we don't need flow control. Signed-off-by: Jonas Aaberg Signed-off-by: Linus Walleij Signed-off-by: Dan Williams --- arch/arm/mach-ux500/devices-db8500.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c index 638964e614e..8d94bc673aa 100644 --- a/arch/arm/mach-ux500/devices-db8500.c +++ b/arch/arm/mach-ux500/devices-db8500.c @@ -140,11 +140,12 @@ struct stedma40_chan_cfg dma40_memcpy_conf_phy = { .src_info.endianess = STEDMA40_LITTLE_ENDIAN, .src_info.data_width = STEDMA40_BYTE_WIDTH, .src_info.psize = STEDMA40_PSIZE_PHY_1, + .src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, .dst_info.endianess = STEDMA40_LITTLE_ENDIAN, .dst_info.data_width = STEDMA40_BYTE_WIDTH, .dst_info.psize = STEDMA40_PSIZE_PHY_1, - + .dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, }; /* Default configuration for logical memcpy */ struct stedma40_chan_cfg dma40_memcpy_conf_log = { @@ -157,11 +158,12 @@ struct stedma40_chan_cfg dma40_memcpy_conf_log = { .src_info.endianess = STEDMA40_LITTLE_ENDIAN, .src_info.data_width = STEDMA40_BYTE_WIDTH, .src_info.psize = STEDMA40_PSIZE_LOG_1, + .src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, .dst_info.endianess = STEDMA40_LITTLE_ENDIAN, .dst_info.data_width = STEDMA40_BYTE_WIDTH, .dst_info.psize = STEDMA40_PSIZE_LOG_1, - + .dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, }; /* -- cgit v1.2.3-18-g5258 From 8bc68fa51d7ed520cd4c69f74fb37add60b6ea47 Mon Sep 17 00:00:00 2001 From: Jonas Aaberg Date: Sun, 20 Jun 2010 21:26:30 +0000 Subject: DMAENGINE: ste_dma40: add DB8500 memcpy channels This adds all available memcpy channels to the DB8500 in the ux500 platform (and fixes a typo). Signed-off-by: Jonas Aaberg Signed-off-by: Linus Walleij Signed-off-by: Dan Williams --- arch/arm/mach-ux500/devices-db8500.c | 2 ++ arch/arm/mach-ux500/ste-dma40-db8500.h | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c index 8d94bc673aa..a001e4c052c 100644 --- a/arch/arm/mach-ux500/devices-db8500.c +++ b/arch/arm/mach-ux500/devices-db8500.c @@ -177,10 +177,12 @@ static const dma_addr_t dma40_rx_map[STEDMA40_NR_DEV]; /* Reserved event lines for memcpy only */ static int dma40_memcpy_event[] = { + STEDMA40_MEMCPY_TX_0, STEDMA40_MEMCPY_TX_1, STEDMA40_MEMCPY_TX_2, STEDMA40_MEMCPY_TX_3, STEDMA40_MEMCPY_TX_4, + STEDMA40_MEMCPY_TX_5, }; static struct stedma40_platform_data dma40_plat_data = { diff --git a/arch/arm/mach-ux500/ste-dma40-db8500.h b/arch/arm/mach-ux500/ste-dma40-db8500.h index e7016278dfa..9d9d3797b3b 100644 --- a/arch/arm/mach-ux500/ste-dma40-db8500.h +++ b/arch/arm/mach-ux500/ste-dma40-db8500.h @@ -136,7 +136,7 @@ enum dma_dest_dev_type { STEDMA40_DEV_CAC1_TX = 48, STEDMA40_DEV_CAC1_TX_HAC1_TX = 49, STEDMA40_DEV_HAC1_TX = 50, - STEDMA40_MEMXCPY_TX_0 = 51, + STEDMA40_MEMCPY_TX_0 = 51, STEDMA40_DEV_SLIM1_CH0_TX_HSI_TX_CH4 = 52, STEDMA40_DEV_SLIM1_CH1_TX_HSI_TX_CH5 = 53, STEDMA40_DEV_SLIM1_CH2_TX_HSI_TX_CH6 = 54, -- cgit v1.2.3-18-g5258 From 595167253a20167efae704ff2a8f6e2ee66cf25f Mon Sep 17 00:00:00 2001 From: Jonas Aaberg Date: Sun, 20 Jun 2010 21:26:45 +0000 Subject: DMAENGINE: ste_dma40: no disabled phy channels on ux500 Make sure we have no disabled physical channels when we start on the ux500 machines. Signed-off-by: Jonas Aaberg Signed-off-by: Linus Walleij Signed-off-by: Dan Williams --- arch/arm/mach-ux500/devices-db8500.c | 1 + arch/arm/plat-nomadik/include/plat/ste_dma40.h | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c index a001e4c052c..e2b7c31ef37 100644 --- a/arch/arm/mach-ux500/devices-db8500.c +++ b/arch/arm/mach-ux500/devices-db8500.c @@ -194,6 +194,7 @@ static struct stedma40_platform_data dma40_plat_data = { .memcpy_conf_phy = &dma40_memcpy_conf_phy, .memcpy_conf_log = &dma40_memcpy_conf_log, .llis_per_log = 8, + .disabled_channels = {-1}, }; struct platform_device u8500_dma40_device = { diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h index 4d12ea4ca36..5fbde4b8dc1 100644 --- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h +++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h @@ -148,7 +148,8 @@ struct stedma40_chan_cfg { * @memcpy_conf_phy: default configuration of physical channel memcpy * @memcpy_conf_log: default configuration of logical channel memcpy * @llis_per_log: number of max linked list items per logical channel - * + * @disabled_channels: A vector, ending with -1, that marks physical channels + * that are for different reasons not available for the driver. */ struct stedma40_platform_data { u32 dev_len; @@ -159,6 +160,7 @@ struct stedma40_platform_data { struct stedma40_chan_cfg *memcpy_conf_phy; struct stedma40_chan_cfg *memcpy_conf_log; unsigned int llis_per_log; + int disabled_channels[8]; }; /** -- cgit v1.2.3-18-g5258 From f41855929c9fdc3b4f2863ada9df3e0cf4231b5b Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 22 Jun 2010 18:06:42 -0700 Subject: DMAENGINE: ste_dma40: support older silicon This makes sure the DMA40 driver will also work on the oldest silicon revisions that have the on-chip memory on another location in the DB8500 and also requires explicit suspend before starting or resuming a logical channel. Signed-off-by: Linus Walleij [added parenthesis to the definition of U8500_DMA_LCPA_BASE_ED] Signed-off-by: Dan Williams --- arch/arm/mach-ux500/devices-db8500.c | 2 ++ arch/arm/mach-ux500/include/mach/db8500-regs.h | 1 + 2 files changed, 3 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c index e2b7c31ef37..c62cdbee3bd 100644 --- a/arch/arm/mach-ux500/devices-db8500.c +++ b/arch/arm/mach-ux500/devices-db8500.c @@ -213,4 +213,6 @@ void dma40_u8500ed_fixup(void) dma40_plat_data.memcpy_len = 0; dma40_resources[0].start = U8500_DMA_BASE_ED; dma40_resources[0].end = U8500_DMA_BASE_ED + SZ_4K - 1; + dma40_resources[1].start = U8500_DMA_LCPA_BASE_ED; + dma40_resources[1].end = U8500_DMA_LCPA_BASE_ED + 2 * SZ_1K - 1; } diff --git a/arch/arm/mach-ux500/include/mach/db8500-regs.h b/arch/arm/mach-ux500/include/mach/db8500-regs.h index 897fa35078e..f000218210c 100644 --- a/arch/arm/mach-ux500/include/mach/db8500-regs.h +++ b/arch/arm/mach-ux500/include/mach/db8500-regs.h @@ -17,6 +17,7 @@ #define U8500_ESRAM_BANK4 (U8500_ESRAM_BANK3 + U8500_ESRAM_BANK_SIZE) /* Use bank 4 for DMA LCPA */ #define U8500_DMA_LCPA_BASE U8500_ESRAM_BANK4 +#define U8500_DMA_LCPA_BASE_ED (U8500_ESRAM_BANK4 + 0x4000) #define U8500_PER3_BASE 0x80000000 #define U8500_STM_BASE 0x80100000 -- cgit v1.2.3-18-g5258