From f62c3f2c35874713ebbb6b6a4b9d9c6caaed4f14 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 15 May 2007 11:03:24 +0100 Subject: [ARM] pxa: remove useless pxa_pm_finish() function pxa_pm_finish() does nothing but return zero. The core code does nothing with this return value, and will not try to call the finish method in the pm_ops structure if it is NULL. Therefore, we can remove this useless function. Signed-off-by: Russell King --- include/asm-arm/arch-pxa/pm.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/asm-arm/arch-pxa') diff --git a/include/asm-arm/arch-pxa/pm.h b/include/asm-arm/arch-pxa/pm.h index 7a8a1cdf430d..52243a62c4e7 100644 --- a/include/asm-arm/arch-pxa/pm.h +++ b/include/asm-arm/arch-pxa/pm.h @@ -9,4 +9,3 @@ extern int pxa_pm_prepare(suspend_state_t state); extern int pxa_pm_enter(suspend_state_t state); -extern int pxa_pm_finish(suspend_state_t state); -- cgit v1.2.3 From 7a2b94bc39915041304578188441f0f21aa5532a Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 16 May 2007 15:44:37 +0100 Subject: [ARM] pxa: remove MMC register defines from pxa-regs.h pxamci.h redefines the MMC registers differently so they can be used with ioremap. Remove the incompatible definitions from pxa-regs.h. Signed-off-by: Russell King --- drivers/mmc/host/pxamci.h | 22 ---------------------- include/asm-arm/arch-pxa/pxa-regs.h | 22 +--------------------- 2 files changed, 1 insertion(+), 43 deletions(-) (limited to 'include/asm-arm/arch-pxa') diff --git a/drivers/mmc/host/pxamci.h b/drivers/mmc/host/pxamci.h index 1b163220df2b..df17c281278a 100644 --- a/drivers/mmc/host/pxamci.h +++ b/drivers/mmc/host/pxamci.h @@ -1,25 +1,3 @@ -#undef MMC_STRPCL -#undef MMC_STAT -#undef MMC_CLKRT -#undef MMC_SPI -#undef MMC_CMDAT -#undef MMC_RESTO -#undef MMC_RDTO -#undef MMC_BLKLEN -#undef MMC_NOB -#undef MMC_PRTBUF -#undef MMC_I_MASK -#undef END_CMD_RES -#undef PRG_DONE -#undef DATA_TRAN_DONE -#undef MMC_I_REG -#undef MMC_CMD -#undef MMC_ARGH -#undef MMC_ARGL -#undef MMC_RES -#undef MMC_RXFIFO -#undef MMC_TXFIFO - #define MMC_STRPCL 0x0000 #define STOP_CLOCK (1 << 0) #define START_CLOCK (2 << 0) diff --git a/include/asm-arm/arch-pxa/pxa-regs.h b/include/asm-arm/arch-pxa/pxa-regs.h index dbcc9298b0c8..e68b593d69da 100644 --- a/include/asm-arm/arch-pxa/pxa-regs.h +++ b/include/asm-arm/arch-pxa/pxa-regs.h @@ -1765,29 +1765,9 @@ #define SSACD_P(x) (*(((x) == 1) ? &SSACD_P1 : ((x) == 2) ? &SSACD_P2 : ((x) == 3) ? &SSACD_P3 : NULL)) /* - * MultiMediaCard (MMC) controller + * MultiMediaCard (MMC) controller - see drivers/mmc/host/pxamci.h */ -#define MMC_STRPCL __REG(0x41100000) /* Control to start and stop MMC clock */ -#define MMC_STAT __REG(0x41100004) /* MMC Status Register (read only) */ -#define MMC_CLKRT __REG(0x41100008) /* MMC clock rate */ -#define MMC_SPI __REG(0x4110000c) /* SPI mode control bits */ -#define MMC_CMDAT __REG(0x41100010) /* Command/response/data sequence control */ -#define MMC_RESTO __REG(0x41100014) /* Expected response time out */ -#define MMC_RDTO __REG(0x41100018) /* Expected data read time out */ -#define MMC_BLKLEN __REG(0x4110001c) /* Block length of data transaction */ -#define MMC_NOB __REG(0x41100020) /* Number of blocks, for block mode */ -#define MMC_PRTBUF __REG(0x41100024) /* Partial MMC_TXFIFO FIFO written */ -#define MMC_I_MASK __REG(0x41100028) /* Interrupt Mask */ -#define MMC_I_REG __REG(0x4110002c) /* Interrupt Register (read only) */ -#define MMC_CMD __REG(0x41100030) /* Index of current command */ -#define MMC_ARGH __REG(0x41100034) /* MSW part of the current command argument */ -#define MMC_ARGL __REG(0x41100038) /* LSW part of the current command argument */ -#define MMC_RES __REG(0x4110003c) /* Response FIFO (read only) */ -#define MMC_RXFIFO __REG(0x41100040) /* Receive FIFO (read only) */ -#define MMC_TXFIFO __REG(0x41100044) /* Transmit FIFO (write only) */ - - /* * Core Clock */ -- cgit v1.2.3 From b23170c01f6e4ea043df7cd9486c2488e01f3d60 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 15 May 2007 10:26:49 +0100 Subject: [ARM] pxa: introduce cpu_is_pxaXXX macros Signed-off-by: Russell King --- arch/arm/mach-pxa/generic.c | 6 ++---- include/asm-arm/arch-pxa/hardware.h | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+), 4 deletions(-) (limited to 'include/asm-arm/arch-pxa') diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 64b08b744f9f..147b7c40d9f9 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -448,16 +448,14 @@ static struct platform_device *devices[] __initdata = { static int __init pxa_init(void) { - int cpuid, ret; + int ret; ret = platform_add_devices(devices, ARRAY_SIZE(devices)); if (ret) return ret; /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */ - cpuid = read_cpuid(CPUID_ID); - if (((cpuid >> 4) & 0xfff) == 0x2d0 || - ((cpuid >> 4) & 0xfff) == 0x290) + if (cpu_is_pxa25x()) ret = platform_device_register(&hwuart_device); return ret; diff --git a/include/asm-arm/arch-pxa/hardware.h b/include/asm-arm/arch-pxa/hardware.h index e2bdc2fbede1..386121746417 100644 --- a/include/asm-arm/arch-pxa/hardware.h +++ b/include/asm-arm/arch-pxa/hardware.h @@ -62,6 +62,42 @@ #ifndef __ASSEMBLY__ +#define __cpu_is_pxa21x(id) \ + ({ \ + unsigned int _id = (id) >> 4 & 0xf3f; \ + _id == 0x212; \ + }) + +#define __cpu_is_pxa25x(id) \ + ({ \ + unsigned int _id = (id) >> 4 & 0xfff; \ + _id == 0x2d0 || _id == 0x290; \ + }) + +#define __cpu_is_pxa27x(id) \ + ({ \ + unsigned int _id = (id) >> 4 & 0xfff; \ + _id == 0x411; \ + }) + +#define cpu_is_pxa21x() \ + ({ \ + unsigned int id = read_cpuid(CPUID_ID); \ + __cpu_is_pxa21x(id); \ + }) + +#define cpu_is_pxa25x() \ + ({ \ + unsigned int id = read_cpuid(CPUID_ID); \ + __cpu_is_pxa25x(id); \ + }) + +#define cpu_is_pxa27x() \ + ({ \ + unsigned int id = read_cpuid(CPUID_ID); \ + __cpu_is_pxa27x(id); \ + }) + /* * Handy routine to set GPIO alternate functions */ -- cgit v1.2.3 From 486c955118dbbb0f13dc4d40cc5dac2b23f82676 Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Wed, 6 Jun 2007 06:22:20 +0100 Subject: [ARM] 4434/1: PXA: remove PXA_IRQ_SKIP 1. PXA_IRQ_SKIP is defined to be 7 on PXA25x so that the first IRQ starts from zero. This makes IRQ numbering inconsistent between PXA25x and PXA27x. Remove this macro so that the same IRQ_XXXXX definition has the same value on both PXA25x and PXA27x. 2. make IRQ_SSP3..IRQ_PWRI2C valid only if PXA27x is defined, this avoids unintentional use of these macros on PXA25x Signed-off-by: eric miao Signed-off-by: Russell King --- arch/arm/mach-pxa/irq.c | 10 +++++----- include/asm-arm/arch-pxa/entry-macro.S | 2 +- include/asm-arm/arch-pxa/irqs.h | 11 ++++------- 3 files changed, 10 insertions(+), 13 deletions(-) (limited to 'include/asm-arm/arch-pxa') diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c index 4619d5fe606c..45ce711f0472 100644 --- a/arch/arm/mach-pxa/irq.c +++ b/arch/arm/mach-pxa/irq.c @@ -30,12 +30,12 @@ static void pxa_mask_low_irq(unsigned int irq) { - ICMR &= ~(1 << (irq + PXA_IRQ_SKIP)); + ICMR &= ~(1 << irq); } static void pxa_unmask_low_irq(unsigned int irq) { - ICMR |= (1 << (irq + PXA_IRQ_SKIP)); + ICMR |= (1 << irq); } static int pxa_set_wake(unsigned int irq, unsigned int on) @@ -75,12 +75,12 @@ static struct irq_chip pxa_internal_chip_low = { static void pxa_mask_high_irq(unsigned int irq) { - ICMR2 &= ~(1 << (irq - 32 + PXA_IRQ_SKIP)); + ICMR2 &= ~(1 << (irq - 32)); } static void pxa_unmask_high_irq(unsigned int irq) { - ICMR2 |= (1 << (irq - 32 + PXA_IRQ_SKIP)); + ICMR2 |= (1 << (irq - 32)); } static struct irq_chip pxa_internal_chip_high = { @@ -351,7 +351,7 @@ void __init pxa_init_irq(void) /* GPIO 0 and 1 must have their mask bit always set */ GPIO_IRQ_mask[0] = 3; - for (irq = PXA_IRQ(PXA_IRQ_SKIP); irq <= PXA_IRQ(31); irq++) { + for (irq = PXA_IRQ(0); irq <= PXA_IRQ(31); irq++) { set_irq_chip(irq, &pxa_internal_chip_low); set_irq_handler(irq, handle_level_irq); set_irq_flags(irq, IRQF_VALID); diff --git a/include/asm-arm/arch-pxa/entry-macro.S b/include/asm-arm/arch-pxa/entry-macro.S index 1d5fbb9b379a..b7bf0dd4fa44 100644 --- a/include/asm-arm/arch-pxa/entry-macro.S +++ b/include/asm-arm/arch-pxa/entry-macro.S @@ -34,6 +34,6 @@ rsb \irqstat, \irqnr, #0 and \irqstat, \irqstat, \irqnr clz \irqnr, \irqstat - rsb \irqnr, \irqnr, #(31 - PXA_IRQ_SKIP) + rsb \irqnr, \irqnr, #31 1001: .endm diff --git a/include/asm-arm/arch-pxa/irqs.h b/include/asm-arm/arch-pxa/irqs.h index 67ed43674c63..dc4e7548b7d5 100644 --- a/include/asm-arm/arch-pxa/irqs.h +++ b/include/asm-arm/arch-pxa/irqs.h @@ -11,14 +11,9 @@ */ -#ifdef CONFIG_PXA27x -#define PXA_IRQ_SKIP 0 -#else -#define PXA_IRQ_SKIP 7 -#endif - -#define PXA_IRQ(x) ((x) - PXA_IRQ_SKIP) +#define PXA_IRQ(x) (x) +#ifdef CONFIG_PXA27x #define IRQ_SSP3 PXA_IRQ(0) /* SSP3 service request */ #define IRQ_MSL PXA_IRQ(1) /* MSL Interface interrupt */ #define IRQ_USBH2 PXA_IRQ(2) /* USB Host interrupt 1 (OHCI) */ @@ -26,6 +21,8 @@ #define IRQ_KEYPAD PXA_IRQ(4) /* Key pad controller */ #define IRQ_MEMSTK PXA_IRQ(5) /* Memory Stick interrupt */ #define IRQ_PWRI2C PXA_IRQ(6) /* Power I2C interrupt */ +#endif + #define IRQ_HWUART PXA_IRQ(7) /* HWUART Transmit/Receive/Error (PXA26x) */ #define IRQ_OST_4_11 PXA_IRQ(7) /* OS timer 4-11 matches (PXA27x) */ #define IRQ_GPIO0 PXA_IRQ(8) /* GPIO0 Edge Detect */ -- cgit v1.2.3 From c08b7b3ef6bf489ddabadc03e050f3db2ea44b5d Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Wed, 6 Jun 2007 06:32:38 +0100 Subject: [ARM] 4435/1: PXA: remove PXA_INTERNAL_IRQS 1. define PXA_GPIO_IRQ_BASE to be right after the internal IRQs, and define PXA_GPIO_IRQ_NUM to be 128 for all PXA2xx variants 2. make the code specific to the high IRQ numbers (32..64) to be PXA27x specific 3. add a function pxa_init_irq_high() to initialize the internal high IRQ chip, the invoke of this function could be moved to PXA27x specific initialization code Signed-off-by: eric miao Signed-off-by: Russell King --- arch/arm/mach-pxa/irq.c | 26 ++++++++++++++++---------- include/asm-arm/arch-pxa/irqs.h | 15 ++++++--------- 2 files changed, 22 insertions(+), 19 deletions(-) (limited to 'include/asm-arm/arch-pxa') diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c index 45ce711f0472..844d3de3ef44 100644 --- a/arch/arm/mach-pxa/irq.c +++ b/arch/arm/mach-pxa/irq.c @@ -67,7 +67,7 @@ static struct irq_chip pxa_internal_chip_low = { .set_wake = pxa_set_wake, }; -#if PXA_INTERNAL_IRQS > 32 +#ifdef CONFIG_PXA27x /* * This is for the second set of internal IRQs as found on the PXA27x. @@ -90,6 +90,19 @@ static struct irq_chip pxa_internal_chip_high = { .unmask = pxa_unmask_high_irq, }; +void __init pxa_init_irq_high(void) +{ + int irq; + + ICMR2 = 0; + ICLR2 = 0; + + for (irq = PXA_IRQ(32); irq < PXA_IRQ(64); irq++) { + set_irq_chip(irq, &pxa_internal_chip_high); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } +} #endif /* Note that if an input/irq line ever gets changed to an output during @@ -314,7 +327,6 @@ static struct irq_chip pxa_muxed_gpio_chip = { .set_wake = pxa_set_gpio_wake, }; - void __init pxa_init_irq(void) { int irq; @@ -338,8 +350,6 @@ void __init pxa_init_irq(void) #ifdef CONFIG_PXA27x /* And similarly for the extra regs on the PXA27x */ - ICMR2 = 0; - ICLR2 = 0; GFER3 = 0; GRER3 = 0; GEDR3 = GEDR3; @@ -357,12 +367,8 @@ void __init pxa_init_irq(void) set_irq_flags(irq, IRQF_VALID); } -#if PXA_INTERNAL_IRQS > 32 - for (irq = PXA_IRQ(32); irq < PXA_IRQ(PXA_INTERNAL_IRQS); irq++) { - set_irq_chip(irq, &pxa_internal_chip_high); - set_irq_handler(irq, handle_level_irq); - set_irq_flags(irq, IRQF_VALID); - } +#ifdef CONFIG_PXA27x + pxa_init_irq_high(); #endif for (irq = IRQ_GPIO0; irq <= IRQ_GPIO1; irq++) { diff --git a/include/asm-arm/arch-pxa/irqs.h b/include/asm-arm/arch-pxa/irqs.h index dc4e7548b7d5..a07fe0f928cd 100644 --- a/include/asm-arm/arch-pxa/irqs.h +++ b/include/asm-arm/arch-pxa/irqs.h @@ -55,18 +55,15 @@ #ifdef CONFIG_PXA27x #define IRQ_TPM PXA_IRQ(32) /* TPM interrupt */ #define IRQ_CAMERA PXA_IRQ(33) /* Camera Interface */ - -#define PXA_INTERNAL_IRQS 34 -#else -#define PXA_INTERNAL_IRQS 32 #endif -#define GPIO_2_x_TO_IRQ(x) \ - PXA_IRQ((x) - 2 + PXA_INTERNAL_IRQS) +#define PXA_GPIO_IRQ_BASE (64) +#define PXA_GPIO_IRQ_NUM (128) + +#define GPIO_2_x_TO_IRQ(x) (PXA_GPIO_IRQ_BASE + (x)) #define IRQ_GPIO(x) (((x) < 2) ? (IRQ_GPIO0 + (x)) : GPIO_2_x_TO_IRQ(x)) -#define IRQ_TO_GPIO_2_x(i) \ - ((i) - IRQ_GPIO(2) + 2) +#define IRQ_TO_GPIO_2_x(i) ((i) - PXA_GPIO_IRQ_BASE) #define IRQ_TO_GPIO(i) (((i) < IRQ_GPIO(2)) ? ((i) - IRQ_GPIO0) : IRQ_TO_GPIO_2_x(i)) #if defined(CONFIG_PXA25x) @@ -81,7 +78,7 @@ * these. If you need more, increase IRQ_BOARD_END, but keep it * within sensible limits. */ -#define IRQ_BOARD_START (IRQ_GPIO(PXA_LAST_GPIO) + 1) +#define IRQ_BOARD_START (PXA_GPIO_IRQ_BASE + PXA_GPIO_IRQ_NUM) #define IRQ_BOARD_END (IRQ_BOARD_START + 16) #define IRQ_SA1111_START (IRQ_BOARD_END) -- cgit v1.2.3 From 8118d124949ed8ff1a450e0c0d13cfab8c2ff7aa Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Wed, 6 Jun 2007 06:49:59 +0100 Subject: [ARM] 4440/1: PXA: enable the checking of ICIP2 for IRQs ICIP2 is not examined during IRQ entrance, this patch add the checking if the processor is PXA27x or later, with CoreG bits in CPUID (Core Generation) > 1 Signed-off-by: eric miao Signed-off-by: Russell King --- include/asm-arm/arch-pxa/entry-macro.S | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'include/asm-arm/arch-pxa') diff --git a/include/asm-arm/arch-pxa/entry-macro.S b/include/asm-arm/arch-pxa/entry-macro.S index b7bf0dd4fa44..b7e730851461 100644 --- a/include/asm-arm/arch-pxa/entry-macro.S +++ b/include/asm-arm/arch-pxa/entry-macro.S @@ -20,15 +20,33 @@ .endm .macro get_irqnr_and_base, irqnr, irqstat, base, tmp -#ifdef CONFIG_PXA27x - mrc p6, 0, \irqstat, c0, c0, 0 @ ICIP - mrc p6, 0, \irqnr, c1, c0, 0 @ ICMR -#else + mrc p15, 0, \tmp, c0, c0, 0 @ CPUID + mov \tmp, \tmp, lsr #13 + and \tmp, \tmp, #0x7 @ Core G + cmp \tmp, #1 + bhi 1004f + mov \base, #io_p2v(0x40000000) @ IIR Ctl = 0x40d00000 add \base, \base, #0x00d00000 ldr \irqstat, [\base, #0] @ ICIP ldr \irqnr, [\base, #4] @ ICMR -#endif + b 1002f + +1004: + mrc p6, 0, \irqstat, c6, c0, 0 @ ICIP2 + mrc p6, 0, \irqnr, c7, c0, 0 @ ICMR2 + ands \irqstat, \irqstat, \irqnr + beq 1003f + rsb \irqstat, \irqnr, #0 + and \irqstat, \irqstat, \irqnr + clz \irqnr, \irqstat + rsb \irqnr, \irqnr, #31 + add \irqnr, \irqnr, #32 + b 1001f +1003: + mrc p6, 0, \irqstat, c0, c0, 0 @ ICIP + mrc p6, 0, \irqnr, c1, c0, 0 @ ICMR +1002: ands \irqnr, \irqstat, \irqnr beq 1001f rsb \irqstat, \irqnr, #0 -- cgit v1.2.3 From f53f066c25036210036730d64c876ea586114425 Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Fri, 22 Jun 2007 05:40:17 +0100 Subject: [ARM] 4451/1: pxa: make dma.c generic and remove cpu specific dma code Since the number of dma channels varies between pxa25x and pxa27x, it introduces some specific code in dma.c. This patch moves the specific code to pxa25x.c and pxa27x.c and makes dma.c more generic. 1. add pxa_init_dma() for dma initialization, the number of channels are passed in by the argument 2. add a "prio" field to the "struct pxa_dma_channel" for the channel priority, and is initialized in pxa_init_dma() 3. use a general priority comparison with the channels "prio" field so to remove the processor specific pxa_for_each_dma_prio macro, this is not lightning fast as the original one, but it is acceptable as it happens when requesting dma, which is usually not so performance critical Signed-off-by: eric miao Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/mach-pxa/dma.c | 44 +++++++++++++++++++++++++++++------------- arch/arm/mach-pxa/pxa25x.c | 5 +++++ arch/arm/mach-pxa/pxa27x.c | 3 +++ include/asm-arm/arch-pxa/dma.h | 22 ++------------------- 4 files changed, 41 insertions(+), 33 deletions(-) (limited to 'include/asm-arm/arch-pxa') diff --git a/arch/arm/mach-pxa/dma.c b/arch/arm/mach-pxa/dma.c index 4440babe7b97..93c4f31f127f 100644 --- a/arch/arm/mach-pxa/dma.c +++ b/arch/arm/mach-pxa/dma.c @@ -25,12 +25,15 @@ #include -static struct dma_channel { +struct dma_channel { char *name; + pxa_dma_prio prio; void (*irq_handler)(int, void *); void *data; -} dma_channels[PXA_DMA_CHANNELS]; +}; +static struct dma_channel *dma_channels; +static int num_dma_channels; int pxa_request_dma (char *name, pxa_dma_prio prio, void (*irq_handler)(int, void *), @@ -47,8 +50,9 @@ int pxa_request_dma (char *name, pxa_dma_prio prio, do { /* try grabbing a DMA channel with the requested priority */ - pxa_for_each_dma_prio (i, prio) { - if (!dma_channels[i].name) { + for (i = 0; i < num_dma_channels; i++) { + if ((dma_channels[i].prio == prio) && + !dma_channels[i].name) { found = 1; break; } @@ -91,7 +95,7 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id) { int i, dint = DINT; - for (i = 0; i < PXA_DMA_CHANNELS; i++) { + for (i = 0; i < num_dma_channels; i++) { if (dint & (1 << i)) { struct dma_channel *channel = &dma_channels[i]; if (channel->name && channel->irq_handler) { @@ -109,18 +113,32 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id) return IRQ_HANDLED; } -static int __init pxa_dma_init (void) +int __init pxa_init_dma(int num_ch) { - int ret; + int i, ret; - ret = request_irq (IRQ_DMA, dma_irq_handler, 0, "DMA", NULL); - if (ret) + dma_channels = kzalloc(sizeof(struct dma_channel) * num_ch, GFP_KERNEL); + if (dma_channels == NULL) + return -ENOMEM; + + ret = request_irq(IRQ_DMA, dma_irq_handler, IRQF_DISABLED, "DMA", NULL); + if (ret) { printk (KERN_CRIT "Wow! Can't register IRQ for DMA\n"); - return ret; -} + kfree(dma_channels); + return ret; + } -arch_initcall(pxa_dma_init); + /* dma channel priorities on pxa2xx processors: + * ch 0 - 3, 16 - 19 <--> (0) DMA_PRIO_HIGH + * ch 4 - 7, 20 - 23 <--> (1) DMA_PRIO_MEDIUM + * ch 8 - 15, 24 - 31 <--> (2) DMA_PRIO_LOW + */ + for (i = 0; i < num_ch; i++) + dma_channels[i].prio = min((i & 0xf) >> 2, DMA_PRIO_LOW); + + num_dma_channels = num_ch; + return 0; +} EXPORT_SYMBOL(pxa_request_dma); EXPORT_SYMBOL(pxa_free_dma); - diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index a8796aea8353..13437582342d 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -25,6 +25,7 @@ #include #include #include +#include #include "generic.h" @@ -137,7 +138,11 @@ void __init pxa25x_init_irq(void) static int __init pxa25x_init(void) { + int ret = 0; + if (cpu_is_pxa21x() || cpu_is_pxa25x()) { + if ((ret = pxa_init_dma(16))) + return ret; #ifdef CONFIG_PM pm_set_ops(&pxa25x_pm_ops); #endif diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index 1407985c8ab0..5b819e2c5563 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "generic.h" @@ -214,6 +215,8 @@ static int __init pxa27x_init(void) { int ret = 0; if (cpu_is_pxa27x()) { + if ((ret = pxa_init_dma(32))) + return ret; #ifdef CONFIG_PM pm_set_ops(&pxa27x_pm_ops); #endif diff --git a/include/asm-arm/arch-pxa/dma.h b/include/asm-arm/arch-pxa/dma.h index bed042d71d68..3280ee2ddfa5 100644 --- a/include/asm-arm/arch-pxa/dma.h +++ b/include/asm-arm/arch-pxa/dma.h @@ -30,30 +30,12 @@ typedef enum { DMA_PRIO_LOW = 2 } pxa_dma_prio; -#if defined(CONFIG_PXA27x) - -#define PXA_DMA_CHANNELS 32 - -#define pxa_for_each_dma_prio(ch, prio) \ -for ( \ - ch = prio * 4; \ - ch != (4 << prio) + 16; \ - ch = (ch + 1 == (4 << prio)) ? (prio * 4 + 16) : (ch + 1) \ -) - -#elif defined(CONFIG_PXA25x) - -#define PXA_DMA_CHANNELS 16 - -#define pxa_for_each_dma_prio(ch, prio) \ - for (ch = prio * 4; ch != (4 << prio); ch++) - -#endif - /* * DMA registration */ +int __init pxa_init_dma(int num_ch); + int pxa_request_dma (char *name, pxa_dma_prio prio, void (*irq_handler)(int, void *), -- cgit v1.2.3